1 SimGrid (3.34.1) not released (Target: fall 2023)
4 - New class ActivitySet to ease wait_any()/test_any()/wait_all()
5 - Deprecate {Comm,Io,Exec}::{wait_any,wait_all,test_any} and friends
6 - New function NetZone::add_route(host1, host2, links) when you don't need gateways
7 Also add a variant with s4u::Link, when you don't want to specify the directions
9 - Introduce a Mailbox::get_async() with no payload parameter. You can use the new
10 Comm::get_payload() once the communication is over to retrieve the payload.
11 - Implement recursive mutexes. Simply pass true to the constructor to get one.
12 - Update of the Task model. Each Task now consists of a dispatcher, a collector
13 and one or more instances. The parallelism degree of each of these can be set.
14 Several examples have been added or modified accordingly.
17 - New SMPI_app_instance_join(): wait for the completion of a started MPI instance
18 - MPI_UNIVERSE_SIZE now initialized to the total amount of hosts in the platform
21 - Implement recursive pthreads.
25 - Make the host_load plugin available from Python. See examples/python/plugin-host-load
26 - Mailbox::get_async() does not return a pair anymore. Use comm.get_payload() instead.
27 - Comm::waitall/waitany/testany() are gone. Please use ActivitySet() instead.
28 - Comm::waitallfor() is gone too. Its semantic was unclear on timeout anyway.
29 - Io::waitany() and waitanyfor() are gone. Please use ActivitySet() instead.
32 - Introduce sg_activity_set_t and deprecate wait_all/wait_any/test_any for
36 - Revamp the battery plugin: rewrite completely the API, for a better usability.
37 The examples were updated accordingly.
38 The battery can now act as a simple connector. See battery-connector example.
39 - Revamp of the Photovoltaic plugin: now called SolarPanel and complete rewrite of the API
40 - Add chiller plugin: enable the management of chillers consuming electrical energy
41 to compensate heat generated by hosts.
43 ----------------------------------------------------------------------------
45 SimGrid (3.34) June 26. 2023
47 Save the planet, skip a release: 3.33 was due 6 months ago, so skip directly to 3.34.
50 - SimGrid now requires a compiler with C++17 support for public headers too.
51 Sibling projects should upgrade their FindSimGrid.cmake
52 - Remove the MSG API: its EOL was scheduled for 2020.
53 - Remove the Java bindings: they were limited to the MSG interface.
54 - On Windows, you now need to install WSL2 as the native builds are now disabled.
55 It was not really working anyway.
56 - Support for 32bits architecture is not tested anymore on our CI infrastructure.
57 It may break in the future, but we think that nobody's using SimGrid on 32 bits.
58 - Remove the surf module. It was replaced by the kernel/models module, and that
59 refactoring took almost 10 years to properly complete.
62 - Activity::set_remaining() is not public anymore. Use for example
63 Comm::set_payload_size() to change the size of the simulated data.
64 - New function: Engine::flatify_platform(), to get a fully detailed vision of the
66 - New Task abstraction: They are designed to represent dataflows, i.e, graphs of repeatable Activities.
67 See the examples under examples/cpp/task-* and the associated documentation.
68 - Full simDAG integration: Activity::start() actually starts only when all dependencies
69 are fulfilled. If it cannot be started right away, it will start as soon as it becomes
71 - Allow to set a concurrency limit on disks and hosts, as it was already the case for links.
72 - Rename Link::get_usage() to Link::get_load() for consistency with Host::
73 - Every signal now come with a static version that is invoked for every object of that class,
74 and an instance version that is invoked for this specific object only. For example,
75 s4u::Actor::on_suspend_cb() adds a callback that is invoked for the suspend of any actor while
76 s4u::Actor::on_this_suspend_cb() adds a callback for this specific actor only.
77 - Activity::on_suspended_cb() is renamed to Activity::on_suspend_cb(), and fired right before the suspend.
78 - Activity::on_resumed_cb() is renamed to Activity::on_resume_cb(), and fired right before the resume.
79 - Resource::on_state_change_cb() is renamed to Resource::on_onoff_cb() to distinguish from the
80 Activity::on_state_change_cb() that is related to the activity state machine, not on/off.
81 - Activity signals (veto, suspend, resume, completion) are now specialized by activity class.
82 That is, callbacks registered in Exec::on_suspend_cb will not be fired for Comms nor Ios.
85 - Battery: Enable the management of batteries on hosts.
86 See the examples under examples/cpp/battery-* and the documentation in the Plugins page.
87 - Photovoltaic: Enable the management of photovoltaic panels on hosts.
88 See the examples under examples/cpp/photovoltaic-* and the documentation in the Plugins page.
91 - optimize an internal data structure (use a set instead of a list for ongoing activities),
92 leading to a potentially big performance gain, in particular with many detached comms.
95 - New option smpi/barrier-collectives to add a barrier to some collectives
96 to detect dangerous code that /may/ work on some MPI implems.
97 - New function SMPI_app_instance_start() to easily start a MPI instance in your S4U simulation.
100 - Write the section of the manual about models, at least.
101 - WiFi: the total capacity of a link depends on the amount of flows on that link.
102 - Use the nonlinear callback feature of LMM to reflect this.
103 - Calibration values can be changed to match different MCS configurations
104 - See the example teshsuite/models/wifi_usage_decay/wifi_usage_decay.cpp
105 - See also "A Flow-Level Wi-Fi Model for Large Scale Network Simulation"
106 https://hal.archives-ouvertes.fr/hal-03777726
107 - Merge parameters network/bandwidth-factor and smpi/bw-factor that serve the same purpose.
108 - Same for the latency
109 - Rewrite the corresponding documentation.
110 - Allow to disable the TCP windowing modeling by setting network/TCP-gamma to 0.
111 - Finally kill the 'compound' host model. You can change the CPU or network model
112 with the default host model, as it should.
113 - Rename option "surf/precision" to "precision/timing" for clarity.
114 - Rename option "maxmin/precision" to "precision/work-amount" for clarity.
115 - New function: Engine::flatify_platform() to debug your platform.
118 - Implement pthread_join in MC mode.
119 - Implement semaphore functions in sthread.
120 - Add an intricated way to verify the access to non-reentrant data structures
121 It requires code annotation, as shown in examples/sthread/stdobject/stdobject.cpp
124 - Stateless model-checking is now usable on any system, including Mac OSX and ARM processors.
125 - The stateless aspects of the MC are now enabled by default in all SimGrid builds.
126 Liveness and stateful aspects are still controlled by the enabling_model-checking
127 configuration option.
128 - Introducing ODPOR and SDPOR reduction strategies
129 - Introducing guiding heuristics, trying to find bugs faster than DFS in reduced state space.
130 - Synchronize the MBI tests with upstream.
131 - Show the full actor backtraces when replaying a MC trace (with model-check/replay)
132 and the status of all actors on deadlocks in MC mode.
135 - simgrid::xbt::cmdline and simgrid::xbt::binary_name are gone.
136 Please use simgrid::s4u::Engine::get_cmdline() instead.
139 - New tutorial on simulating DAGs.
140 - New section in the user guide on the provided performance models.
141 - New section presenting some technical good practices for (potential) contributors.
142 - Add a section on errors and exceptions to the API documentation.
143 - Move the s4u examples to a section on their own to ease navigation.
145 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
146 (FG: issues on Framagit; GH: issues on GitHub)
147 - FG#18: Java bindings should be redone or removed
148 - FG!118: Wi-Fi callback mechanism
149 - FG!119: SMPI: add option to inject a barrier before every collective call
150 - GH#383: Segfault when adding a disk after load_platform(xml)
152 ----------------------------------------------------------------------------
154 SimGrid (3.32) October 3. 2022.
156 The Wiedervereinigung release. Germany was reunited 32 years ago.
159 - SimGrid now requires a compiler with C++17 support to compile the lib.
160 Our public headers still allow the user code to be compiled in C++14.
161 - Support graphviz v3 and ns-3 v3.36 (older versions are still supported).
162 - Tested with clang (v11, v13, v14 and v16), gcc (v7 to v13) and IntelCC v2022.2
166 - kill signal Comm::on_completion that was not working anyway.
167 - Expose signals Activity::on_suspend and Activity::on_resume
168 - New macro xbt_enforce(): similar to xbt_assert(), but throws an AssertionError
169 instead of calling abort().
170 - New: s4u::Exec::get_thread_count()
171 - Various cleanups around virtual machines:
172 - host_by_name() and friends now only return hosts. VMs are now excluded.
173 - It is now impossible to search a VM by name globally.
174 You can only search VM by name on a given PM, so either you know
175 the PM on which your VM runs and you can search by name, or you need
176 to manually iterate over all PMs to search this VM.
177 - The s4u::VirtualMachine constructor is now deprecated.
178 Please use s4u::Host::create_vm() instead.
179 - Rename s4u::VirtualMachine::on_creation() to on_vm_creation() to
180 avoid confusion with s4u:Host::on_creation() that is inherited.
181 Also s4u::VirtualMachine::on_destruction -> on_vm_destruction().
183 - One-sided communications (Comm::sendto) can now be detached,
184 and should now be more resilient to network and host faults.
187 - Added the following bindings / examples:
188 - Comm (now 100% covers the C++ interface):
189 - Comm.dst_data_size, Comm.mailbox, Comm.sender, Comm.start_time, Comm.finish_time
190 - Comm.state_str [examples: examples/python/comm-failure/, examples/python/comm-host2host/]
191 - Comm.remaining [examples: examples/python/comm-host2host/, examples/python/comm-suspend/]
192 - Comm.set_payload_size [example: examples/python/comm-host2host/]
193 - Comm.set_rate [example: examples/python/comm-throttling/]
194 - Comm.sendto, Comm.sendto_init, Comm.sendto_async [example: examples/python/comm-host2host/]
195 - Comm.start, Comm.suspend, Comm.resume [example: examples/python/comm-host2host/]
196 - Comm.test_any [example: examples/python/comm-testany/]
197 - Comm.wait_until [example: examples/python/comm-waituntil/]
199 - Engine.host_by_name [example: examples/python/comm-host2host/]
200 - Engine.mailbox_by_name_or_create [example: examples/python/comm-pingpong/]
202 - Mailbox: Mailbox.ready [example: examples/python/comm-ready/]
203 - Ptask [example: examples/python/exec-ptask/]:
204 - this_actor.exec_init
205 - this_actor.parallel_execute
208 - Added an AssertionError exception that may be thrown in case of error.
209 For instance, creating two hosts with the same name will now throw this exception
210 instead of killing the interpreter.
213 - Implement MPI_File_get_type_extent(), MPI_File_s/get_atomicity() and
214 MPI_File_get_byte_offset()
215 - Intercept getpid() calls to return the simulated ones.
216 - Fix various bugs in MPI IO.
218 Platform description & visualization:
219 - More robust sanity checks for platforms, to reject forbidden topologies with
220 a proper error message.
221 - New platform example: supernode.cpp and supernode.py.
222 The Python version generates a nice graphical representation of the platform.
223 - Bug fixes around fat-tree topologies.
224 - Allow to dump the platform topology as a CSV file representing the graph edges
225 with platform_graph_export_csv() (similar to the DOT export).
226 - Fix graphicator for "cluster" topologies (e.g. fat-tree, dragonfly).
229 - Fix a bug when using ptasks with multicores (FG!111).
232 - First bits of sthread, that intercepts pthread operations at runtime.
233 The intend is to use it together with simgrid-mc, but it is TBD.
234 - Sync MBI generators with upstream changes.
235 - Various cosmetics, small bug fixes and inner refactorings
237 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
238 (FG: issues on Framagit; GH: issues on GitHub)
239 - FG#105: "Variable penalty should not be negative!" with in-flight messages and bandwidth profiles
240 - FG#109: Application time reported by --cfg=smpi/display-timing:yes is wrong
241 - FG#110: Wait_any does not trigger new model solve when host events occur
242 - FG#111: Wrong execution time in rare cases when using multicore
243 - FG!98: Re-enable the tests for legacy stochastic profiles
244 - FG!109: Trigger new engine solve upon host events such as host on/off
245 - FG!116: SMPI/replay: Fix issue with recv of size =0
247 ----------------------------------------------------------------------------
249 SimGrid (3.31) March 22. 2022.
251 The ненасильство release. We stand against war.
253 Against the agression by a sick system that forces peoples to take arms against each other.
256 - Rework the internals, for simpler and modern code. This shall unlock many future improvements.
257 - You can now define plugins onto the DFS explorer (previously called SafetyChecker), using the
258 declared signals. See CommunicationDeterminism for an example.
259 - Support mutex, semaphore and barrier in DPOR reduction
260 - Seems to work on Arm64 architectures too.
261 - Display a nice error message when ptrace is not usable.
262 - New test suite, imported from the MPI Bugs Initiative (MBI). Not all MBI generators are integrated yet.
263 - Remove the ISP test suite: it's not free software, and it's superseeded by MBI.
266 - fix for FG#100 by ensuring small asynchronous messages never overtake larger
267 ones, conforming to the standard.
268 - replay: fix waitall behaviour to avoid forgetting requests and leaking
270 - tracing: ensure that we dump the TI traces continuously during execution and
271 not just at the end, reducing memory cost and performance hit.
272 - Update OpenMPI collectives selection logic to match current one (4.1.2)
273 - Add a coherence check for collective operation order and root/MPI_Op
274 coherence. Potentially costly so not activated unless smpi:pendantic is set
275 or -analyze is given.
278 - New signal: Engine::on_simulation_start_cb()
279 - Introduce a new execution mode with this_actor::thread_execute(). This simulate
280 the execution of a certain amount of flops by multiple threads ran by a host. Each
281 thread executes the same number of flops, given as argument. An example of this new
282 function can be found in examples/cpp/exec-threads.
283 - Reimplementation of barriers natively.
284 Previously, they were implemented on top of s4u::Mutex and s4u::ConditionVariable.
285 The new version should be faster (and can be used in the model-checker).
286 - Actor::get_restart_count(): Returns the number of reboots that this actor did.
289 - MSG_barrier_destroy now expects a non-const msg_barrier parameter.
291 New plugin: the Chaos Monkey (killing actors at any time)
292 - Along with the new simgrid-monkey script, it tests whether your simulation
293 resists resource failures at any possible timestamp in your simulation.
294 - It is mostly intended to test the SimGrid core in extreme conditions,
295 but some users may find it interesting too.
298 - New solver for parallel task: BMF.
299 - More realistic sharing of heterogeneous resources compared to the fair
300 bottleneck solver used by ptask_L07.
301 - Implement the BMF (Bottleneck max fairness) fairness.
302 - Improved resource sharing for parallel tasks with sub-flows (parallel
303 communications between same source and destination inside the ptask).
305 - "--cfg=host/model:ptask_L07 --cfg=host/solver:bmf": enable the ptask
306 model with BMF solver.
307 - "--cfg=bmf/max-iterations: <N>": maximum number of iterations performed
308 by BMF solver (default: 1000).
309 - "--cfg=bmf/precision: <N>": numerical precision used when computing
310 resource sharing (default: 1e-12).
311 - This model requires Eigen3 library. Make sure Eigen3 is installed to use BMF.
314 - Modifications of the Profile mechanism, with some impact on users
315 - Addition of a new (S4U) method to init profiles from generic functions to improve versatility
316 - Fix initial behaviour of state_profiles
317 - Modify periodicity to behave like a period, and not like a loop delay
320 - Drop xbt_dynar_shrink().
323 - Made the following bindings static (previously member functions):
324 - Actor: Actor.kill_all(), Actor.by_pid()
325 - Host: Host.by_name(), Host.current(), Host.on_creation_cb()
326 - Mailbox: Mailbox.by_name()
327 - Added the following bindings:
328 - this_actor.warning()
329 - Mailbox.put_init() [example: examples/python/comm-waitallfor/]
330 - Comm.detach() [example: examples/python/comm-waitallfor/]
331 - Comm.wait_for() [example: examples/python/comm-waitfor/]
332 - Comm.wait_any_for()
333 - Comm.wait_all_for() [example: examples/python/comm-waitallfor/]
334 - Mutex [example: examples/python/synchro-mutex/]
335 - Barrier [example: examples/python/synchro-barrier/]
336 - Semaphore [example: examples/python/synchro-semaphore/]
339 - Remove target "make uninstall" which was incomplete and no longer maintained.
341 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
342 (FG: issues on Framagit; GH: issues on GitHub)
343 - FG#57: Mc SimGrid should test whether ptrace is usable
344 - FG#87: Smpi scripts fail with spaces in paths
345 - FG#100: [SMPI] Order of the message matching is not guaranteed
346 - FG#101: LGPL 2.1 is deprecated license
347 - FG#104: "make uninstall" not up-to-date
348 - GH#151: Missing mutexes for DPOR.
350 ----------------------------------------------------------------------------
352 SimGrid (3.30) January 30. 2022.
354 The Sunday Bloody Sunday release.
356 Main user-visible changes:
357 - The SimDag API for the simulation of the scheduling of Directed Acyclic
358 Graphs has been dropped. It was marked as deprecated for a couple of years.
359 We finally complete the implementation of what has been called SimDag++
360 internally, i.e., porting the different features of SimDag on top of S4U.
361 The new way to simulate the execution of dependent activities directly by
362 maestro (without any other actor) is details in the examples/cpp/dag-* series
364 - The removal of SimDag led us to also remove the export to Jedule files that
365 was tightly coupled to SimDag. The instrumentation of DAG simulation is still
366 possible through the regular instrumentation API based on the Paje format.
367 - We also dropped the old and clumsy Lua bindings to create platforms in a
368 programmatic way. It can be done in C++ in a much cleaner way now, which
369 motivates this suppression.
372 - Introduce on_X_cb() functions for all signals, to attach a new
373 callback to the signal X. The signal variables are now hidden and
374 only these functions should be used.
375 Rationale: this enables the usual deprecation scheme where functions
376 remain for 4 releases if we need to modify the signals, while the
377 current code with the signal variables directly visible prevents any
379 - New function: Engine::run_until(date), to split the simulation.
380 - New signal: Activity::on_veto, to detect when an activity fails to start.
381 - Signal change: Comm::on_start(Comm&, bool) has been replaced by
382 Comm::on_send and Comm::recv. These two signals respectively correspond to
383 when the sending or receiving side of a Comm is ready. They are raised at
384 the same locations as the former Comm::on_start signal.
385 - New function: Engine::track_vetoed_activities() to interrupt run()
386 when an activity fails to start, and to keep track of such activities.
387 Please see the corresponding example for more info.
388 - New functions: s4u::Comm::{sendto_init, set_source, set_destination} to enable
389 the use of vetoers with direct host-to-host communications. Both source and
390 destination have to set for a comm to start. Each call to these setters check
391 if all vetoes are satisfied. When it is the case, the comm starts. A use case of
392 these functions is given in examples/cpp/dag-scheduling.
393 - New functions: {Exec, Io}::update_priority allow you to modify the priority of
394 these kinds of activities during their execution. Behavior is detailed in
395 examples/cpp/io-priority/.
398 - Dynamic costs for MPI operations: New API to allow users to dynamically
399 change injected costs for MPI_Recv, MPI_Send and MPI_Isend operations.
400 Alternative for smpi/or, smpi/os and smpi/ois configuration options.
401 - Fix some issues with the replay mechanism.
404 - Function xbt::Extendable::get_data() is now templated with the type of the
405 pointee. Untyped function is deprecated. Use get_data<void>() if you still
406 want to retrieve void*.
409 - New section: "SimGrid MPI calibration of a Grid5000 cluster"
410 presenting how to properly calibrate MPI communications in SimGrid.
411 - Complete and reword the platform section, which is now completed.
414 - Thread contexts are used by default with Python bindings. Other kinds of
415 contexts revealed unstable, specially starting with pybind11 v2.8.0.
417 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
418 (FG: issues on Framagit; GH: issues on GitHub)
419 - FG#95: Wrong computation time for multicore execution after pstate change
420 - FG#97: Wrong computation time for ptask+multicore+pstates
421 - FG#98: SMPI offline simulation is inconsistent with the online simulation
422 (deadlocks / message truncation)
423 - FG#99: Weird segfault when not sealing an host
425 ----------------------------------------------------------------------------
427 SimGrid (3.29) October 7. 2021
429 The "Ask a stupid question" release.
431 We wish that every user ask one question about SimGrid to celebrate.
432 On Mattermost, Stack Overflow or using the issues tracker.
434 New modeling features:
435 - Non-linear resource sharing, modeling resources whose performance heavily degrades with contention:
436 - The total capacity may be updated dynamically through a callback
437 and depends mainly on the number of concurrent flows.
438 - Examples (both cpp and python): io-degradation, network-nonlinear, exec-cpu-nonlinear
440 - Dynamic factors: model variability in the speed of activities
441 - Each action can now have a factor that affects its progression.
442 This multiplicative factor is applied when updating the amount of work
443 remaining, thereby an activity with factor=0.5 only uses half of the
444 instantaneous power/bandwidth it is allocated and will appear twice
445 slower than what it actually consumes.
446 - This can be used to model a overhead (e.g., there is a 20 bytes
447 header in a 480 bytes TCP packet so the factor 0.9583) but the novelty
448 is this factor can now easily be adjusted depending on activity's and
449 resources characteristics.
450 - This existed for network (e.g., the effective bandwidth depends
451 on the message in SMPI piecewise-linear network model) but it is now
452 more general (the factor may depend on the source and destination and
453 thus account to different behaviors for intra-node communications and
454 extra-node communications) and is available for CPUs (e.g., if you
455 want to model an affinity as in the "Unrelated Machines" problem in
456 scheduling) and disks (e.g., if you want to model a stochastic
458 - For that, resources can be provided with a callback that computes
459 the activity factor when creating the action.
460 - Example: examples/cpp/exec-cpu-factors
461 - The same mechanism is also available for the latency, which
462 allows to easily introduce complex variability patterns.
465 - Added support to programmatic platform creation in Python.
466 Example: examples/python/clusters-multicpu
469 - Disk and Host now have a set_sharing_policy() too, for non-linear sharing.
470 This can only be set through the API, not through XML files.
474 - Multiple fixes to ensure reproducibility of tracing
475 - scan/excan can now be replayed
476 - wait action now uses ranks and not pid, as the other ones.
477 - smpi/init and smpi/finalization-barrier are now valid for replays.
478 - exit() is now intercepted by SMPI to avoid premature shutdown of
479 simulation. First non 0 return codes is returned as simulation return
483 * New section "Release Notes" documenting recent and current developments.
484 * New section "Modeling I/O: the realistic way" presenting how to properly model disks in SimGrid.
485 * Improvements in API Reference for C++ and Python interfaces.
488 - Make wifi creation compatible with ns-3 version 3.34 too.
490 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
491 (FG: issues on Framagit; GH: issues on GitHub)
492 - FG#77: Search feature of doc is broken (update sphinx theme version)
493 - FG#78: Multiple fixes for SMPI replay:
494 - TI tracing of allotallv/w was outputting wrong values
495 - MPI_LOGICAL in fortran is actually 32 bits wide, and not 8.
497 ----------------------------------------------------------------------------
499 SimGrid (3.28) July 14. 2021
501 The Victoriadagarna Release.
504 - C++ platform interface: Users can now describe their platform directly in C++.
505 This provides greatly flexibility and performance improvement for complex
506 platforms. Main features:
507 - Fat-Tree/DragonFly/Torus composing: allows you to create clusters of
508 "zones", instead of single hosts. This feature enables the description
509 of clusters with complex hosts, composed of several CPUs, GPUs, etc.
510 - StarZone: new zone with a Star-like topology. The routes are defined
511 as a set of links used to communicate from node to everybody (node<->ALL).
512 - Split-Duplex links: auxiliary method to create split-duplex links in
513 the platform, easing its utilisation. It automatically creates both UP
514 and DOWN links (similarly as done in XML).
515 - Please refer to the documentation and the examples included:
516 e.g. examples/cpp/clusters-multicpu/ and examples/platforms/*.cpp.
517 - New plugin: Producer-Consumer with monitor. Just requires to include the
518 include/simgrid/plugins/ProducerConsumer.hpp header to be used. See the
519 associated example (examples/cpp/plugin-prodcons).
522 - New: s4u::Comm::wait_all_for() (like s4u::Comm::wait_all, but with a timeout),
523 s4u::Io::wait_any(), s4u::Io::wait_any_for().
524 - Methods test_all/test_any/wait_all/wait_any in s4u now take their vector
525 parameter by reference, instead of a pointer.
526 - Fixed a bug where Activity::wait_for() killed the activity on timeout.
527 Explicitly cancel the activity to get back to previous behavior.
528 - New: Link::set_concurrency_limit() to limit the amount of concurrent flows.
531 - The default SMPI compiler flags are no more taken from the environment.
532 They can be explicitly set through cmake parameters SMPI_C_FLAGS,
533 SMPI_CXX_FLAGS, or SMPI_Fortran_FLAGS.
535 --cfg=smpi/finalization-barrier: which can be used to add
536 a barrier inside MPI_Finalize. This can help for some codes which cleanup
537 data attached to a process, but still used in other SMPI processes.
538 --cfg=smpi/errors-are-fatal: True by default, behaves like if MPI_ERRORS_RETURN
539 is active when set to false, to keep going after a small error
540 --cfg=smpi/pedantic: True by default. Do not report some harmless MPI errors
541 which may or may not be problematic in the end.
543 - fix behaviour, as maximum iteration count could be ignored
544 - add SMPI_SAMPLE_LOCAL_TAG and SMPI_SAMPLE_GLOBAL_TAG macros, to allow user to
545 use sampling when the same kernel is called with a different set of parameters
546 which have an impact on the timing.
547 - realloc is now intercepted, to be coherent, as malloc/calloc/free were already.
548 It should now work with smpi/auto-shared-malloc-thresh.
549 - Improve error handling and reporting in multiple places
550 - Improve correctness checks on the MPI code.(MPI_Op and MPI_Datatype
551 validity checks, truncated messages are now an error, return errors
552 when explicitely deleted handles are reused, ...)
553 - RMA: multiple fixes and stability improvements.
554 - analysis (-analyze flag in smpirun):
555 - SMPI can now report buffer leaks as well as MPI handles leaks,
556 if code was compiled without SMPI_NO_OVERRIDE_MALLOC.
557 - if -trace-call-location is used when compiling, SMPI can report
558 origin of leaked handles/buffers
559 - group leaks by type/origin in output message if possible
560 - New implemented MPI calls: MPI_Comm_test_inter
563 - Changed internal implementation of bandwidth factors in network models.
564 Models affected: CM02, LV08 (default), SMPI, IB.
565 Configuration affected: "network/bandwidth-factors" and "smpi/bw-factors".
566 Bandwidth factors are applied to communications to describe that users
567 cannot use 100% of the available bandwidth. For example, the default network model,
568 LV08, applies a factor of 0.97 to the bandwidth. In older versions, this
569 behavior was implemented by limiting the bandwidth available in the LMM
570 system for this flow. This may give the false impression that there is
571 bandwidth available for other flows due to its underutilization, especially
572 for the dynamic bandwidth factors used in SMPI models.
573 To avoid this, we have modified the implementation so that each flow uses the
574 maximum physical bandwidth according to the LMM system.
575 However, the actual throughput of the flow seen by the user is defined by
576 the physical bandwidth multiplied by the bandwidth factor.
577 This change impacts on the simulation results for all network models on
578 which we have bandwidth factors configured.
579 *****************************************
580 *DO NOT MIX 3.28 RESULTS WITH OLDER ONES*
581 *****************************************
582 This change may impact on the timing of your simulation results.
583 Take care when comparing simulations from different SimGrid's
584 versions. Sorry for the inconvenience.
585 - Dynamic network factors: users can configure a callback to define
586 the network factors dynamically. This API is available at
587 simgrid::kernel::resource::NetworkModelIntf.
588 - Users have access to complete information about the current communication
589 to decide which factor to apply. This includes: message size, source and
590 destination hosts, links and zones traversed.
591 - Dynamic factors for both latency and bandwidth.
592 - For more details, see the example in (examples/cpp/network-factors).
593 - Plugin host_energy: the "watt_off" and "watt_per_state" host properties,
594 deprecated since version 3.24, are no longer supported. Instead, use
595 "wattage_off" and "wattage_per_state".
598 - xbt_assert is not disabled anymore, even when built with enable_debug=off.
601 - New tutorial: Model-checking and formal assessment
602 - New sections: "Demystifying the routing" and "C++ platforms"
603 - Update and improve the part on visualization in MPI and Algo tutorials.
604 - Improve the section on routing: how to define it, how it's used internally
605 - Fix many issues, broken links and missing references in doxygen and Sphinx
608 - Lua platform files are deprecated. Their support will be dropped after v3.31.
611 - Legacy functions deprecated in this release: SIMIX_get_clock(), SIMIX_run().
613 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
614 (FG: issues on Framagit; GH: issues on GitHub)
615 - FG#47: Complete and fix tests from teshuite/s4u/activity-lifecycle
616 - FG#64: Configuring smpi/IB-penalty-factors
617 - FG#67: Running computation concurrently with MPI_Iallreduce
618 - FG#69: Tutorial misleading users of pre-v3.26 versions of SimGrid
619 - FG#71: Segmentation fault on invalid gw_src/gw_dst
620 - GH#322: Issue when an actor kills his host vm
622 ----------------------------------------------------------------------------
624 SimGrid (3.27) March 29. 2021
626 The Ragnar Release (anniversary of the siege of Paris by Vikings in 845)
628 Main user-visible changes:
629 - All functions marked as deprecated for one year were removed.
630 - Removed all that was related to the "Storage" type in all APIs and bindings.
631 "Disks" have been introduced more than a year ago to replace them for the better.
632 It's time to finish this replacement.
633 - SMPI ABI breaks from previous version: MPI global handles (predefined datatypes,
634 ops, COMM_WORLD) are now defined differently, and can be used in initializers,
635 avoiding "initializer element is not constant" errors with some codes. Please be
636 careful to recompile your MPI codes if switching to this new SimGrid version.
637 - Network model ns-3 now requires version ns-3.28 or higher.
638 - Removed some option aliases that were deprecated since v3.23 (June 2019)
639 - 'verbose-exit' is now 'debug/verbose-exit'
640 - 'simix/breakpoint' is now 'debug/breakpoint'
641 - 'clean-atexit' is now 'debug/clean-atexit'
644 - New functions: Comm::sendto_{init,async} to initiate a communication
645 on between two (possibly remote) hosts.
646 - Define new template functions Mailbox::get_unique(), returning a std::unique_ptr.
647 - Functions Mailbox::get() and Mailbox::get_async() are now templated with the
648 type of the pointee. Untyped functions are deprecated. Use Mailbox::get<void>()
649 or Mailbox::get_async<void>() if you really want to play with void*.
650 - Unify the interface of Activity::on_{start/activity}
651 - New function: Comm::get_dst_data()
652 - New function: Comm::set_payload_size() to set the amount of bytes to simulate.
655 - ptask should now work better with multicore hosts (FG#37).
656 - Internal cleanups and refactoring around activities, to prepare for SimDAG++.
657 - Internal cleanups and refactoring around models, to prepare for programmatic
659 - Modernize our tests of the performance models
663 - New section: Configuring the logs from the command line.
664 - New section: Programming API of logs.
665 - New section: Getting realistic results
666 - New section: Examples of SMPI Usage
667 - New part: SimGrid's Internals, with a section on Design goals
668 - Move back to the classical Breathe tool chain, and fix many small glitches.
671 - Handle leak checking: SMPI will now display a message if MPI handles are still
672 present at the end of a simulation. Option smpi/list-leaks:n will display the n
673 first leaked pointers and their types.
674 - smpi/display-allocs option : Display Memory allocations analysis, with hints
675 about the largest allocations. This only works for allocations with malloc/calloc
676 and not compiled with SMPI_NO_OVERRIDE_MALLOC
677 - "-analyze" option in smpirun will activate smpi/display-allocs and smpi/display-timing
678 - New implemented MPI calls: MPI_File_set_size, MPI_Aint_add, MPI_Aint_diff,
679 MPI_Type_get_extent_x, MPI_Type_get_true_extent_x, MPI_Status_set_elements_x
680 - Support for MPI C++ datatypes (MPI_CXX_BOOL, MPI_CXX_FLOAT_COMPLEX,
681 MPI_CXX_DOUBLE_COMPLEX, MPI_CXX_LONG_DOUBLE_COMPLEX)
682 - Replay now opens and parses the trace file only once for all ranks when possible.
684 - better handling of MPI_PROC_NULL
685 - MPI_Group_incl was broken in some cases
686 - PAPI tracing now fixed
687 - MPI_Errhandlers are properly handled for MPI_COMM_WORLD
688 - SMPI will now fail properly when receive size < sent size, instead of
689 just setting MPI_ERR_TRUNCATE and keep going.
690 - Proxy Apps ( https://framagit.org/simgrid/SMPI-proxy-apps ):
691 - Remove useless build patches and split build/run patches on the page
692 - Build in parallel when possible
693 - Test on yum-based systems
694 - New nightly tested Proxy-apps:
695 - OpenMPI mpi-test-suite
696 - Coral MCB, LSMS, Qbox, CLOMP
697 - ECP/Mantevo Cloverleaf3D, Ember
698 - Codevault bhtree_mpi
701 - Only initialize the Dwarf parser when needed, saving 10 seconds in most cases.
702 - Start to overhaul the implementation to modernize it (still ongoing).
705 - Drop simgrid::xbt::demangle(). Please use boost::core::demangle() instead.
706 - Drop xbt_dynar_cursor_rm(), xbt_dynar_search_or_negative(),
707 xbt_str_split_quoted(), xbt_str_split_quoted_in_place().
708 - Deprecate xbt_dynar_to_array().
709 - When an exception occurs in kernel mode, display both the actor and kernel stacks.
711 C binding and interface:
712 - Rename (lowercase) functions sg_actor_get_PID, sg_actor_get_PPID, sg_actor_by_PID.
713 - Constness requirement has been lowered for parameter argv of sg_actor_start()
714 and sg_actor_create() It's now (char* const*). The previous version is still
715 available as sg_actor_start_() and sg_actor_create_().
717 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
718 (FG: issues on Framagit; GH: issues on GitHub)
719 - FG#37: Parallel tasks are limited to 1 core per host
720 - FG#62: Running "smpirun -replay" on large networks
721 - FG!46: Fix a few potential memory leaks in SMPI colls
722 - GH#343: Wrong consumed energy when an exec timeouts
724 ----------------------------------------------------------------------------
726 SimGrid (3.26) December 15. 2020
728 The Release release (the French lockdown was eased today).
730 Important user-visible changes:
731 - SimGrid now requires a compiler with C++14 support.
732 Sibling projects should upgrade their FindSimGrid.cmake
733 - Surf precision default value is now 1e-9, instead of 1e-5. This was changed as
734 several users had difficulties to understand issues when using high bandwidth or
735 small latency events. The new value was already the default for SMPI and
736 should not cause too much performance hit. It can change some simulation
737 timings if simulation was skipping a lot of small events (which was actually
738 an issue per see). The old value can be restored with --cfg=surf/precision:1e-5.
739 - On some network models (L07, CM02, LV08), an implicit loopback link is created
740 for local communication. Default bandwidth was 500MBps and latency was 15µs,
741 which was rather bad. Default values have been changed to 10GBps and 0 latency.
742 Options network/loopback-lat and network/loopback-bw have been added to adapt
743 these values if needed. Network and routing models already providing separate
744 loopbacks (clusters and such) are not impacted by this change.
745 - SMPI now adds 16 bytes of header to each message sent, in order to simulate
746 metadata that are added to each MPI message by MPI libraries (tag,
747 src/dest, and communicator information). This may change simulation times
748 for very small message sizes, but should be more realistic.
751 - New routing 'WiFi' that makes it easier to specify a wifi network zone.
752 - New plugins: wifi_energy and link_load. See the associated examples.
753 - New examples: wifi networks, and communication suspend.
756 - LTO is now enabled for Intel/clang compilers.
757 - LTO behavior on GCC can be parameterized using LTO_EXTRA_FLAG in cmake.
758 Setting it to "auto" will use all available cores, while setting it to n will
759 use n cores to speedup link step (usage: cmake -DLTO_EXTRA_FLAG=4).
760 - Remove obsolete runtime option 'contexts/parallel-threshold'.
761 - Runtime option 'tracing/msg/process' renamed to 'tracing/actor'. The old name
762 has been kept for compatibility.
763 - Finally remove obsolete snake_case() aliases for runtime options.
764 - Further improve the documentation.
767 - the on_exit() of each actor is also executed when the simulation deadlocks.
768 - New functions: s4u::Activity:: suspend(), resume() and is_suspended()
769 An example is provided for s4u::Comm but it should work with Exec and Io.
772 - Update proxy apps coverage of new ECP apps: 60+ apps now tested nightly on
773 https://framagit.org/simgrid/SMPI-proxy-apps
774 - MPI/IO: supports names starting with "./"
775 - Fortran: many MPI/IO bindings, support for MPI_UB/LB, C MPI_INT/FLOAT/DOUBLE
777 - smpicc/cxx/ff/f90 now will actually perform definition checks at link time. When
778 building shared libraries, this may cause issues, so environment variable
779 SMPI_NO_UNDEFINED_CHECK can be added to disable this.
780 - most temporary files should now be created in /tmp dir (or equivalent).
781 If this one does not allow execution of code (noexec flag), this may cause issues.
782 Please use another tmp directory (using TMPDIR or equivalent system variable)
786 - A large refactoring is ongoing, but this should be transparent for users so far.
789 - Drop xbt_str_split().
791 C binding and interface:
792 - The return type of the sg_actor_on_exit() callbacks is now 'void'
793 (int value was previously ignored)
794 - Many C functions were renamed to follow a common naming style
795 (sg_object_get_something and sg_object_set_something). As usual, the deprecated
796 names are kept until version 3.30.
797 - Many MSG tests were converted to the new S4U's interface in C, that
798 was extended for that.
800 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
801 (FG: issues on Framagit; GF: issues on GForge; GH: issues on GitHub)
802 - FG#41: Add sg_actor_create C interface
803 - FG#43: xbt::random needs some care
804 - FG#48: The Impossible Did Happen (yet again)
805 - FG#50: Suspending an actor executed at the current timestamp fails
806 - FG#52: Zero-seconds timeout : "That's in the past already"
807 - FG#53: Crash while using ns-3 network model
808 - FG#54: How to suspend a comm?
809 - FG!22: Stochastic Profiles
810 - FG!24: Documentation and fix for xbt/random
811 - FG!35: Add a modeling hint for parallel links in doc
812 - FG!36: [xbt/random] Read/Write the state of the RNG
813 - FG!42: Link cumulated load plugin
814 - FG!44: Test condition variable wait_until+notify_all
815 - GF#18137: Allow different stack sizes?
816 - GH#128: Parallelization of simulation with --cfg=contexts/nthreads
817 - GH#139: Allow pthread creation in SMPI
818 - GH#336: Packet-level simulation using SMPI?
819 - GH#345: Error in the LMM while migrating a VM
820 - GH#346: [SMPI] error while loading shared libraries: libsimgrid.so
821 - GH#352: pip install / python setup.py install fail to find pybind11
822 - GH!337: Fix link_energy plugin for wifi platforms
823 - GH!339: Add Mailbox set_receiver method to python binding
824 - GH!344: Cast hugepages macros parameters to int64
826 ----------------------------------------------------------------------------
828 SimGrid (3.25) February 2. 2020 (aka 02 02 2020)
830 The Palindrom Day Release.
832 Important user-visible changes:
833 - Improve the Python usability (stability and documentation).
834 - A nasty synchronization bug was ironed out, see also below.
835 - Python's doc was organized as a separate tree, now integrated with C++.
836 - C bindings of S4U were not part of the doc.
837 - The C++ doc was also improved as methods are now split by theme.
838 - Further deprecate MSG: you now have to pass -Denable_msg=ON to cmake.
839 - This is mandatory to use the Java bindings.
840 - OFF by default; The plan is to completely remove MSG by 2020Q4 or 2021Q1.
841 - SimDAG++: Automatic dependencies on S4U activities (experimental)
842 - Some features are already implemented but not all of them
843 - Cannot block an activity until it's scheduled on a resource
844 - No heterogeneous wait_any() that would mix Exec/Comm/Io activities.
845 - See examples/s4u/{io,exec,comm}-dependent for what's already there.
848 - Upgrade documented Java dependency to Java 8 (earlier versions don't work).
849 - Drop support for Viva/Triva (old visualization tools), hence removed
850 TRACE_get_node_types() and TRACE_get_edge_types() functions.
853 - Require pybind11 version 2.4.
854 - Greatly improve locking during context switches with Python.
855 - Declaring Python callbacks to this_actor::on_exit is now working.
856 - No more tests are failing currently, even on win32.
859 - Actor: Merge signals on_migration_start/end into on_host_change
860 - Actor: Rename migrate() into set_host()
861 - Disk: Allow users to get the read and write nominal bandwidth values
862 - Exec: Implement wait_for(timeout)
863 - Io: Implement wait_for(timeout)
866 - Parse errors now raise a simgrid::ParseError that you may want to catch.
869 - In simgrid::kernel::resource::Model, the methods next_occuring_event*() have
870 been renamed to fix a spelling error. As usual, the previous definitions are
871 kept with a deprecation warning. However, to avoid runtime errors, it is now
872 forbidden to override these deprecated methods in a derived class. Please use
873 the new names immediately if you need to override them.
876 - Remove unused parameter 'free_ctn' for xbt_dict_set() and xbt_dict_set_ext().
877 - Drop unused functions for dicts and dynars: xbt_dict_cursor_get_elm,
878 xbt_dict_get, xbt_dict_get_elm, xbt_dict_get_ext, xbt_dict_get_key,
879 xbt_dict_remove, xbt_dict_reset, xbt_dynar_compare, xbt_dynar_dump,
880 xbt_dynar_foreach_ptr, xbt_dynar_free_data, xbt_dynar_free_voidp,
881 xbt_dynar_init, xbt_dynar_insert_at_as, xbt_dynar_merge,
882 xbt_dynar_remove_n_at, xbt_dynar_replace, xbt_dynar_search, xbt_dynar_set.
883 - New module: random, providing classical random numbers generators.
886 - New option : "smpi/auto-shared-malloc-thresh" which sets a value for
887 allocations' size above which they are considered "shared" by default (as if
888 they were performed through SMPI_SHARED_MALLOC macros).
889 Default = 0 = disabled feature.
890 Note : malloc, calloc and free are now overridden by smpicc/cxx by default.
891 This can cause some troubles if codes are already overriding these. If this
892 is the case, defining SMPI_NO_OVERRIDE_MALLOC in the compilation flags can
893 help, but will make this feature unusable.
894 - Input check is now performed much more consistently and outputs precise
895 warnings for each error found
896 - New supported calls : MPI_File_set_view, MPI_File_get_view
897 - MPI I/O now only supports disks, as storage is discontinued.
898 - MPI I/O allows opening files without specifying absolute path
899 - Note : SMPI configuration options are now initialized by smpi_init_options()
900 call, which should be called if SMPI is not being used through smpirun.
902 Fixed bugs (FG#.. -> framagit bugs; FG!.. -> framagit merge requests):
903 - FG#9: Python bindings crashing
904 - FG#39: Missing s4u::Comm::wait_any_for example
905 - FG#42: Add support for ThreadSanitizer (TSan)
906 - FG!19: Removing RngStream
907 - FG!20: A module for RNG calls
908 - FG!21: Choice between ad-hoc and standard distributions implementations
910 - FG!25: Fix link in Mutex doc
911 - FG!26: Fix links in SMPI interface doc
912 - GH#31: [MC] please provide an option to make MPI_Send asynchronous
913 - GH#305: Unscheduled tasks are still excuted
914 - GH#313: smpirun: manual outdated w.r.t. --help
915 - GH#321: [S4U] Get task remaining work ratio
916 - GH#323: Crash when an actor turn off his physical host
917 - GH#335: Missing links on dragonfly example svg
918 - https://lists.gforge.inria.fr/pipermail/simgrid-user/2019-November/004653.html:
919 MPI_Cart_sub was not working properly. Kudos to Jonathan Borne for the report.
921 ----------------------------------------------------------------------------
923 SimGrid (3.24) October 9. 2019
925 The Clean Disk Release.
928 - Introduce a s4u::Disk interface to manage the newly introduced <disk>
929 tag. s4u::Disk is called to supplant s4u::Storage in a near future. It
930 thus becomes the default resource to execute I/O operations. Examples
931 and the file system plugin have been modified to use disks instead of
932 storage elements. Storage can still be used but is doomed to disappear.
933 Users are thus adviced to update their simulators accordingly.
934 - Barrier::wait returns SG_BARRIER_SERIAL_THREAD for (only) one actor
935 for consistency with pthread_barrier_wait()
936 - Host::get_englobing_zone() returns the englobing netzone
937 - Actor::on_destruction is now called in the destructor
938 Actor::on_termination new signal called when the actor terminates
940 - Global signals are now part of the Engine:
941 - on_platform_creation: after config settings, before the XML parsing
942 - on_platform_created: right after the XML parsing
943 - on_time_advance: each time the clock advances
944 - on_simulation_end: after simulation, before cleanups
945 - on_deadlock: as the name implies.
947 - sg_{actor,host,link}_{data,data_set}() now all exist.
948 Use them to attach user data to the object and retrieve it.
951 - Introduce an experimental Wifi model. It sounds reasonable
952 according to the state of the art, but it still has to be properly
953 validated, at least against ns-3 if not against reality.
954 - Improved the usability of ns-3. Several bugs were ironed out.
955 - host_energy: Wattage was expressed as 'idle:oneCore:allCores'.
956 It is now expressed as 'idle:epsilon:allCores' to properly model the
957 consumption of non-whole tasks on mono-core hosts. More info in the doc.
960 - convert a new set of functions to the S4U C interface and move the old MSG
961 versions to legacy (MSG_process_self*, MSG_process_{un}ref, ...)
964 - Fortran bindings for DVFS have been removed.
965 - Add support for MPI_Irsend, MPI_Rsend, MPI_Rsend_init, MPI_Bsend,
966 MPI_Ibsend, MPI_Bsend_init, MPI_Buffer_attach, MPI_Buffer_detach
967 - SMPI can now be selected by cmake's find_module(MPI) with
968 MPI_C_COMPILER, MPI_CXX_COMPILER, MPI_Fortran_COMPILER variables.
969 - Add support for MPI Errhandlers in Comm, File or Win. Default errhandler is now
970 MPI_ERRORS_ARE_FATAL, so codes which were sending warnings may start failing.
971 - trace-call-location can be used with TI traces, and replayed, and is compatible
972 with smpi/comp-adjustment-file.
973 - sleep events are now correctly traced/replayed.
974 - Default for trace-call-location is now to use file names and not full paths.
975 To revert to previous behavior (in case of collision of filenames), option
976 "smpi/trace-call-use-absolute-path" can be set to yes.
979 - Use the included xxHash as an hash implem when C++14 is usable.
980 - Option model-checker/hash was removed. This is always activated now.
981 - New option smpi/buffering controls the MPI buffering in MC mode.
982 - MPI calls now MC_assert() that no MPI_ERR_* code is returned.
983 This is useful to check for MPI compliance.
986 - New section on plugins: how to define a new one, and existing ones.
989 - xbt_mutex_t and xbt_cond_t are now marked as deprecated, a new C interface
990 on S4U is already available to replace them by sg_mutex_t and sg_cond_t.
993 - Introduce the <disk> tag as a replacement of the <storage>, <storage_type>,
994 and <mount> tags. The rationale is finish to decouple what should be handle
995 by SimGrid kernel (i.e., resources and activities) from plugins built in
996 user space (e.g., the file system plugin). This new tag currently accepts
997 only three attributes (id, read_bw, and write_bw). All the other information
998 that was declared with the storage related tags now has to be expressed as
999 properties. An example of platform using this new tag is available at
1000 examples/platforms/hosts_with_disks.xml
1003 - 'expect signal' can now accept more than one potential signal.
1005 Fixed bugs (FG#.. -> framagit bugs; FG!.. -> framagit merge requests):
1006 - FG#28: add sg_actor_self (and other wrappers on this_actor methods)
1007 - FG#29 and FG#33: provide a new C API to mutexes and condition variables
1008 - FG#30: convert MSG_process_{un}ref to sg_actor_{un}ref
1009 - FG#31: per-actor data
1010 - FG#34: SG_BARRIER_SERIAL_THREAD?
1011 - FG#35: model-checker does not like buster-produced binaries
1012 - FG!13: MC: complete workaround in the error msg seen on modern systems
1013 - FG!15: execute_flops now logs compute
1014 - FG!16: Fix the ns-3 bindings when several flows are simultaneously finishing
1015 - FG!17: ns-3: unblock the right number of communications + others issues
1016 - FG!18: Improving the performance of the ns-3 bindings
1017 - GH#189: Energy consumption of parallel tasks
1018 - GH#219: Error in the throughput of TCP transfer
1019 - GH!330: Minor polishing of English: Configuring_Simgrid
1020 - GH!331: Fix a doc error about actors (Tutorial_algorithms)
1021 - GH!332: Add '-O0' flag for: cmake -DCMAKE_BUILD_TYPE=Debug
1022 - GH!334: Rework energy plugin, again
1024 ----------------------------------------------------------------------------
1026 SimGrid (3.23.2) July 8. 2019
1029 - Nicer introduction page.
1030 - Migrate the "Deploy your application" page to the new doc.
1031 - Move Java as a subtree of MSG.
1034 - Rename simgrid::TimeoutError to simgrid::TimeoutException.
1037 - Drop xbt_dynar_sort_strings().
1040 - Really fix FG#26: Turning off a link should raise NetworkFailureException
1041 - FG#27: Wrong exception thrown to wait_any when link is turned off
1042 - GH#328: Java: Canceling multiple tasks in a single vm/host
1044 ----------------------------------------------------------------------------
1046 SimGrid (3.23) June 25. 2019
1048 The Exotic Solstice Release.
1051 - SunOS and Haiku OS support. Because exotic platforms are fun.
1052 - Stop setting random seed with srand48() at initialization.
1053 - Use addr2line as a fallback for stacktraces when backtrace is not available.
1054 - Build option -Denable_documentation is now OFF by default.
1055 - Network model 'NS3' was renamed into 'ns-3'.
1058 - SimGrid can now hopefully be installed with pip.
1061 - wait_any can now be used for asynchronous executions too.
1064 - New log appenders: stdout and stderr. Use stdout for xbt_help.
1065 - Drop xbt_dict_dump.
1068 - SMPI now reports support of MPI3.1. This does not mean SMPI supports all MPI 3 calls, but it was already the case with 2.2
1069 - MPI/IO is now supported over the Storage API (no files are written or read, storage is simulated). Supported calls are all synchronous ones.
1070 - MPI interface is now const correct for input parameters
1071 - MPI_Ireduce, MPI_Iallreduce, MPI_Iscan, MPI_Iexscan, MPI_Ireduce_scatter, MPI_Ireduce_scatter_block support
1072 - Fortran bindings for async collectives.
1073 - MPI_Comm_get_name, MPI_Comm_set_name, MPI_Count support.
1076 - Remove option 'model-check/record': Paths are recorded in any cases now.
1077 - Remove option 'model-check/sparse-checkpoint': Checkpoints are now
1078 always sparse. That's an immense gain in memory, and can even be
1079 faster because of cache effects. So there is no need to clutter the
1080 code to allow the user to go for the unefficient mode.
1083 - Remove the lagrange-based models (Reno/Reno2/Vegas). The regular
1084 models proved to be more accurate than these old experiments.
1086 Fixed bugs (FG=FramaGit; GH=GitHub -- Please prefer framagit for new bugs)
1087 - FG#1: Broken link in error messages
1088 - FG#2: missing installation documentation
1089 - FG#3: missing documentation in smpirun
1090 - FG#6: Python bindings not available on PyPI
1091 - FG#7: simple cmake call requires doxygen
1092 - FG#8: make python bindings an optional dependency
1093 - FG#10: Can not use MSG_process_set_data from SMPI any more
1094 - FG#11: Auto-restart actors forget their on_exit behavior
1095 - FG#12: -Denable_lto=OFF doesn't disable LTO
1096 - FG#13: Installs unstripped file 'bin/graphicator'
1097 - FG#14: Installs the empty directory 'doc/simgrid/html'
1098 - FG#15: Setting -Denable_python=OFF doesn't disable the search for pybind11
1099 - FG#17: Dead link in doc (pls_ns3)
1100 - FG#20: 'tesh --help' should return 0
1101 - FG#21: Documentation link on http://simgrid.org/ broken
1102 - FG#22: Debian installation instruction are broken
1103 - FG#26: Turning off a link should raise NetworkFailureException exceptions
1104 - GH#133: Java: a process can run on a VM even if its host is off
1105 - GH#320: Stacktrace: Avoid the backtrace variant of Boost.Stacktrace?
1106 - GH#326: Valgrind-detected error for join() when energy plugin is activated
1108 ----------------------------------------------------------------------------
1110 SimGrid (3.22) April 1. 2019
1112 The Easter Christmas Release (this one is somewhat late).
1115 - We are excited to introduce the SimGrid/S4U interface to your neighborhood
1116 - Not complete yet: asynchronous activities (amongst others) are still missing
1117 - Still ongoing: the interface may change in the future. We need more
1118 testers! Please report any glitches.
1119 - No new project using Java should start now. Please switch to Python.
1122 - Some of the internal cleanups may lead to speed improvements:
1123 - The hard limitation on the amount of simulated actors with
1124 Java+Mac was removed. Now, the available memory is the only limit.
1125 - Our refcounting was tidyied, leading to 10% speedups in some cases.
1126 - We are still working on making our code robust to the actor kills
1127 and hosts' churn. Things are improving, but it's not perfect yet.
1128 - Replaced our own code to display a backtrace (that was forking addr2line)
1129 with the Boost.Stacktrace library.
1130 You won't see your backtraces without this optional dependency.
1131 - Bump cmake dependency to 3.5 (provided by Ubuntu 16.04).
1132 - Stop setting random seed with srand() at initialization.
1135 - In <host> and <peer>, 'availability_file' is now 'speed_file'.
1136 XML file version remains 4.2 since old files are still compatible.
1139 - Process termination which was broken at version 3.21 has been repaired.
1140 - Expose host load plugin: loadInit, getCurrentLoad, getComputedFlops, getAvgLoad
1141 - Hide the examples into examples/deprecated. New users should use Python.
1144 - Drop MSG_process_create_from_stdfunc() from the API.
1145 This C++ function was a pimple in the C API, made necessary at some
1146 point by the Java bindings. This is fixed now.
1147 - Hide the examples into examples/deprecated. New users should use S4U.
1148 - MSG_process_create and MSG_process_attach now crash if the host used
1149 to run this process is off.
1150 - Fix the protype of MSG_process_on_exit()
1151 Now use (int,void*) callbacks instead of (void*,void*) ones.
1152 The implementation was ways too messy to actually work, I guess.
1155 - Change the way SMPI_SAMPLE_* macros work to avoid invalidating cache
1156 too often and provide more accurate timings.
1157 - Add -gdb, -lldb, and -vgdb shortcuts to help debug MPI codes with smpirun
1158 - MPI_Alltoallw support
1159 - Partial MPI nonblocking collectives implementation: MPI_Ibcast, MPI_Ibarrier,
1160 MPI_Iallgather, MPI_Iallgatherv, MPI_Ialltoall, MPI_Ialltoallv, MPI_Igather,
1161 MPI_Igatherv, MPI_Iscatter, MPI_Iscatterv, MPI_Ialltoallw.
1162 - MPI_Request_get_status, MPI_Status_set_cancelled, MPI_Status_set_elements
1164 - Basic implementation of generalized requests (SMPI doesn't
1165 allow MPI_THREAD_MULTIPLE) : MPI_Grequest_complete, MPI_Grequest_start
1168 - Drop sg_cmdline. Please use xbt_cmdline instead.
1169 - Drop the C xbt_os_mutex_t; Use the C++11 std::mutex.
1170 - Drop the C xbt_os_sem_t; Use the C++ xbt::OsSemaphore.
1171 OsSemaphore is implemented in a portable way with C++11 threads.
1172 This should allow much more threads to be created at the same time,
1173 allowing Mac and Java users to simulate many more actors.
1174 - Implement the 'thread' factory with std::thread instead of xbt ones.
1175 It is not possible to set the stack size with threads anymore, but
1176 -fsplit-stack is the way to go nowadays when using threads.
1177 - Drop the xbt_os_thread_t module (now unused)
1178 - Drop xbt_ex_display(), use simgrid::xbt::log_exception() instead.
1179 - Drop xbt_str_join_array().
1180 - Drop cunit, use Catch2 instead.
1183 - Many cleanups in the kernel::activity namespace. This was long
1184 overdue, and shall open the path to many future endeavors.
1187 - #132: Java: a process can not shut down its own host
1188 - #220: S4U: detached send causes exception if sender terminates soon after sending
1189 - #261: Document the parameters of parallel execution's constructor
1190 - #300: [s4u] BarrierPtr is missing
1191 - #314: SMPI args internal cleanup
1192 - #316: Fix a bug related to the CPU utilization of multi-core VM
1193 - #318: Invalid trace file when using option --cfg=tracing/smpi/display-sizes:yes
1194 - #324: S4U: Attempting to create an actor on turned off host segfaults instead of throwing
1195 - #325: Turning off a host has different behavior on sleeping actors and computing actors
1197 ----------------------------------------------------------------------------
1199 SimGrid (3.21) October 3. 2018
1201 The Restarting Documentation (TRD) Release.
1204 - Convert the user manual to Sphinx for improved usability.
1205 Unstable version now hosted on https://simgrid.frama.io/simgrid
1206 Many glitches remain; stay tuned.
1207 - Restrict the Doxygen reference API to the installed header files.
1208 (documenting all internals this way is overkill + doxygen scales badly)
1209 - New tutorial on S4U (highly inspired from the old MSG one, but with
1210 a git repository to fork as a starting point, and a docker image)
1211 - Started but not finished an SMPI tutorial inspired from the JLPC'14 one.
1212 - The Developper manual is still to be converted (not compiled until then)
1213 - Some parts are still missing in this conversion (such as the
1214 platform and deployment sections) while others were blindly converted
1215 and would need more love (such as the configuration flags).
1216 Things will certainly further improve in the future releases.
1219 - Fully reimplement auto_restart mechanism that was utterly broken
1220 (fix #22, #131 and #281 that were all very related)
1221 - Implement semaphores (fix #303 and #291)
1222 - When creating an actor from a function and its parameters,
1223 move-only parameters are not allowed anymore, as it would prevent
1224 the actor to be restartable if its parameters are consumed on run.
1225 - s4u::Io: IOs go asynchronous as activities. New methods in s4u::Storage:
1226 - io_init(sg_size_t, s4u::Io::OpType) to create a READ or WRITE asynchronous
1227 IO operations that can be started, waited for, or canceled as a regular
1229 - read_async(sg_size_t) and write_async(sg_size_t) which are wrappers on
1233 - Rename 'power' and 'power_used' variables into 'speed' and 'speed_used'
1234 - New host variable: 'core_count'
1237 - Remove xbt_os_thread_specific features
1238 - Remove portability wrapper to condition variables
1239 - Remove xbt_os_thread_yield()
1242 - MPICH collective selector now mimics MPICH 3.3b
1243 - OpenMPI collective selector now mimics OpenMPI 3.1.2 (default "tuned" setting)
1244 - MPI_Init(NULL,NULL) is now allowed
1245 - smpi/wtime option now injects time in gettimeofday or clock_gettime calls
1246 - Command-line arguments should now be handled properly in Fortran simulations
1247 - MPI Attributes and related callbacks should work in Fortran
1248 - Apps using C + Fortran should now work
1249 - MPI_* calls now check for non MPI_SUCCESS return values and emit warnings
1250 - Support MPI_Error_String
1253 - Due to an internal bug, Msg.run() must now be your last line.
1254 We hope to fix it in a future release, and we are sorry for the inconvenience.
1257 - #22: Process autorestart seem to only work with CAS01 cpus
1258 - #56: Feature request: dynamic SMPI replay
1259 - #93: simgrid should not eat --help
1260 - #111: How to change the loopback link characteristics?
1261 - #116: Platform cluster radical
1262 - #117: Platform cluster/host order
1263 - #129: Replay_multiple on steroid
1264 - #131: Java : autostart does not work
1265 - #143: Setting a breakpoint at a given time
1266 - #235: Network energy models should be integrated
1267 - #264: Add ptask L07 resource tracing
1268 - #271: Dynamic and manual replay of SMPI traces
1269 - #279: Breakpoints option uses time deltas instead of absolute time
1270 - #281: Daemonized actor no longer daemonized after an auto-restart
1271 - #282: TIT convertor erase traces when using absolute path in the trace list file
1272 - #285: segfault when a s4u actor kills itself with msg process tracing activated
1273 - #286: Pajé traces are not exposing the number of cores
1274 - #287: Command-line parsing should stop when encountering '--'
1275 - #288: MPI_Init(NULL, NULL)
1276 - #289: Improve documentation of Actor::on_destruction and this_actor::on_exit()
1277 - #290: Method to check if a mailbox has a message ready to be consumed
1278 - #291: [s4u] semaphores do not seem available yet
1279 - #294: Alltoall collective implementation of mpich
1280 - #295: Starting a Host as OFF is not supported
1281 - #296: DTD too permissive
1282 - #299: Add a s4u barrier example
1284 ----------------------------------------------------------------------------
1286 SimGrid (3.20) Released June 24. 2018
1288 The proxy snake_case() release.
1291 - The whole API is now using snake_case() instead of mixing it with camelCase.
1292 Compatibility wrappers in place for one year.
1293 - We took the opportunity to increase the consistency of the API.
1294 Please report any remaining glitches.
1295 - New function simgrid::s4u::Host::get_actor_count:
1296 Returns the number of actors running on a specific host.
1299 - SMPI is now tested with ~45 proxy apps from various sources, with none or
1300 only minor patching needed: check https://github.com/simgrid/SMPI-proxy-apps
1301 - Replay: The replay file has been re-written in C++.
1302 - Replay: Tags used for messages sent via MPI_Send / MPI_Recv are now
1303 supported. They are stored in the trace and used when replayed.
1304 - Basic support of MPI_Cancel. Robustness not guaranteed.
1305 - Support of MPI_Win_allocate_shared, MPI_Win_shared_query, MPI_Comm_split_type
1306 (only for MPI_COMM_TYPE_SHARED).
1307 - New option: smpi/privatize-libs, to add external shared libs to be privatized
1308 by SMPI. They will be copied locally and loaded separately by each process.
1309 Example --cfg=smpi/privatize-libs:"libgfortran.so.3;libscalapack.so".
1310 - Tracing: add tracing for MPI_Start, Startall, Testall, Testany
1311 - Interception of getopt, getopt_long and getopt_long_only calls to avoid issues
1312 with internal index optind with multiple processes. Only works if MPI_Init has
1313 already been called.
1314 - Fortran: SMPI builds a mpi.mod file which should allow use of "use mpi"
1315 syntax without preprocessing tricks.
1318 - Change --cfg=tracing/msg/vm to --cfg=tracing/vm as virtual machine
1319 behavior tracing is no longer limited to MSG
1320 - TIT (Time Independent Traces): We finally support tags. Unfortunately,
1321 this means that traces now need to be updated or re-obtained; both Irecv
1322 and Isend lines in your traces have now in total 5 mandatory fields:
1323 <rankid> <command> <to/from rankid> <tag> <size>
1324 To update your traces, it suffices to add a 0 for the tag here.
1325 - TIT now also supports waiting for a distinct request via MPI_Wait.
1326 Wait/Test now wait for a specific request, not just the last one that was
1327 issued. This unfortunately means another update, because we need to
1328 identify which request you want to wait for. We do this via the
1329 triplet (sender, receiver, tag), which needs to be added:
1330 <rankid> <command> <sender> <receiver> <tag>
1331 - Actions are now in lower case (e.g., "allReduce" becomes "allreduce").
1332 New script simgrid_convert_TI_traces.py: upgrade your TI traces.
1335 - The deprecation of MSG is ongoing (but this should not impact you).
1336 Many MSG functions are now simple wrappers on the C API of S4U. If
1337 you wish to convert your code to S4U, find the S4U counterparts of
1338 your MSG calls in src/msg/msg_legacy.cpp.
1339 - MSG can still be used, but won't evolve anymore.
1342 - Allow to run the Link energy plugin from the command line with
1343 --cfg=plugin:link_energy
1344 - Rename Energy plugin into host_energy
1345 - Rename Load plugin into host_load
1348 - Add parameter --cfg=simix/breakpoint to raise a SIGTRAP at given time.
1349 - kill simix::onDeadlock() that was somewhat dupplicating s4u::on_deadlock()
1350 - Improve performance when handling timeouts of simix synchros.
1353 - Config: the C API is now deprecated (will be removed in 3.23), and
1354 the C++ API has been slightly improved.
1357 - Fix several build issues on OSX.
1358 - Move simgrid_config.h to simgrid/config.h (old header still working)
1361 - #143: Setting a breakpoint at a given time
1362 - #150: Inconsistent event names in SMPI replay
1363 - #258: daemonized actors hang after all non-daemonized actors have completed
1364 - #267: Linker error on unit_tmgr
1365 - #269: SMPI: tracing of MPI_Wait/all/any broken
1366 - SMPI: Fix various crashes with combined use of MPI_PROC_NULL and MPI_IGNORE_STATUS
1368 ----------------------------------------------------------------------------
1370 SimGrid (3.19.1) Released March 22 2018
1372 The Fixed ABI Release.
1374 As you may know, we are currently refactoring SimGrid in deep.
1375 Upcoming SimGrid4 will be really different from SimGrid3: modular,
1376 standard and extensible vs. layered, homegrown and rigid. C++ vs. C.
1378 Our goal is to smooth this transition, with backward compatibility
1379 and automatic update paths, while still progressing toward SimGrid4.
1381 SimGrid remains open during works: The last pure SimGrid3 release was
1382 v3.12 while all subsequent versions are usable alpha versions of
1383 SimGrid4: Existing interfaces remain unchanged, but the new S4U
1384 interface is budding and the internals are deeply reorganized.
1386 Since 2015, we work hard to reduce the changes to public APIs. When
1387 we need to rename a public library symbol in S4U, we let your
1388 compiler issue an explicative warning when you use the deprecated
1389 function. These messages remain for four releases, i.e. for one full
1390 year, before turning into an error. Starting with v3.15, your can
1391 also adapt to API changes with the SIMGRID_VERSION macro, that is
1392 defined to 31500 for v3.15, to 31901 for v3.19.1 and so on.
1394 Starting with this v3.19.1, our commitment to reduce the changes to
1395 the public interfaces is extended from the API to the ABI: a program
1396 using only MSG or SimDag and compiled against a given version of
1397 simgrid can probably be used with a later version of SimGrid without
1398 recompilation. We will do our best... but don't expect too much of
1399 it, that's a really difficult goal during such profund refactoring.
1401 The difference between v3.19 and v3.19.1 is that the former was
1402 accidentally breaking the ABI of MSG, while the later is restoring
1405 S4U and kernel APIs will still evolve until SimGrid4, with one-year
1406 deprecation warnings as currently. In fact, cleaning up these
1407 interfaces and converting them to snake_case() is one release goal of
1408 v3.20. But don't worry, we are working to smooth this upgrade path.
1410 In summary, new projects should start with S4U to benefit of the
1411 future, but old MSG projects should still be usable with no change.
1413 ----------------------------------------------------------------------------
1415 SimGrid (3.19) Released March 20 2018
1417 The Moscovitly-cold Spring release.
1419 SMPI user-visible improvements:
1420 - Support of MPI_Type_create_subarray
1421 - Unimplemented MPI calls now abort (instead of issuing a warning)
1422 Some harmless calls around errhandlers still only issue a warning.
1423 - MPI_Sendrecv was behaving badly when MPI_PROC_NULL was sender or receiver.
1424 - Starting MPI ranks (or even MSG/S4U actors) once the simulation started
1425 is now possible (mmap privatization was refactored to this end).
1426 Adding new SMPI instances should also be technically doable now.
1428 SMPI internal cleanups:
1429 - Removed index notion from SMPI -- no more "getPid() - 1"!
1430 In tracing files, actors are called rank-<PROCESS-ID> but these are
1431 NOT the real ranks (tracing several communicators is not supported yet).
1432 - Deprecate smpi_process_index() (will be removed in 3.22)
1433 - Better testing on classical proxy apps, through an external project:
1434 https://github.com/simgrid/SMPI-proxy-apps/
1437 - Use a graphical TOC to make it easier to find the documentation you need
1438 - Revamp the MSG tutorial
1441 - Fix MSG_task_get_remaining_work_ratio(): return 1.0 for unstarted tasks.
1442 - Remove parameter of MSG_process_killall().
1443 Resetting the PID was bogus anyway (several actors could have the same PID).
1446 - Execution->setHost() can be called after start(), to migrate it.
1447 - Comm::test_any() is now implemented.
1448 - s4u::Actor now has onCreation() and onDestruction() signals.
1449 - Install some kernel header files for the users' plugins and more.
1450 Warning, their API is really not stable yet.
1451 include/simgrid/kernel/resource/{Action,Resource,Model}.hpp
1452 include/simgrid/kernel/routing/*Zone.hpp
1455 - SD_task_dependency_add(): remove unused parameters 'name' and 'data'.
1457 Build System and other cleanups:
1458 - Remove unused run-time parameter "tracing/onelink-only".
1459 - SimGrid now works with intel compilers (MC still buggy)
1460 - Remove XBT_LOG_CONNECT, it should be useless nowadays.
1461 - tesh kills subprocesses on timeout (but not on windows)
1464 - Rename FULLDUPLEX into SPLITDUPLEX (old name still accepted)
1467 - #194: Feature request: simgrid::s4u::Comm::test_any()
1468 - #245: migrating an actor does not migrate its execution
1469 - #253: Feature Request: expose clusters as objects
1470 - #254: Something seems wrong with s4u::Actor::kill(aid_t)
1471 - #255: Tesh broken on Windows
1472 - #256: Modernize FindSimGrid.cmake
1473 - #257: Fix (ab)use of CMake install
1475 ----------------------------------------------------------------------------
1477 SimGrid (3.18) Released December 24 2017
1479 The "Ho Ho Ho! SimGrid 4 beta is coming to town" release.
1481 MSG IS NOW DEPRECATED. Please use S4U for new projects.
1482 - Support for MSG should not be removed from SimGrid before 2020,
1483 but future evolutions will be limited to the integration of
1484 user-provided patches.
1487 - s4u::onDeadlock() signal, run before stopping the simulation.
1488 - s4u::Exec: asynchronous executions (abstraction of background
1490 - s4u::Host->getLoad() returns the achieved speed in flops/s
1493 - Link::name() is deprecated and will be removed in v3.21, use
1494 Link::getCname() instead.
1495 - Mailbox::getName() changed to return a std::string, use
1496 Mailbox::getCname() instead to get a char*.
1497 - Storage::getName() changed to return a std::string, use
1498 Storage::getCname() instead to get a char*.
1499 - s4u::allStorages() becomes s4u::getStorageList(whereTo)
1500 to have both allocation and deallocation of the map in user space.
1503 - Forbid the use of MSG_task_get_flops_amount() on parallel tasks:
1504 The amount of flops remaining to do is a vector, not a scalar.
1505 - Introduce MSG_task_get_remaining_work_ratio(), which does what its
1506 name implies on both sequential and parallel tasks.
1507 - Both changes fix GitHub's #223 using PR #237 as a basis.
1508 Thanks Michael Mercier.
1509 - Most examples were converted to S4U and hidden elsewhere at tests.
1510 Rationale: we still want MSG to work; we want newcomers to use S4U.
1513 - LMM stuff moved to its own namespace: simgrid::kernel::lmm.
1514 - Renamed LMM classes (e.g. s_lmm_system_t -> System).
1517 - Switch to the faster dlopen privatization mechanism by default
1518 - Documentation improvments
1521 - Live migration is getting moved to a plugin. Dirty page tracking is
1522 the first part of this plugin. This imply that VM migration is now
1523 only possible if one this function is called:
1524 - C/MSG: MSG_vm_live_migration_plugin_init()
1525 - C/C++: sg_vm_live_migration_plugin_init()
1526 - Java: Msg.liveMigrationInit()
1527 For C and C++, "simgrid/plugins/live_migration.h" also has to be
1531 - Define class simgrid::xbt::Path to manage file names.
1532 - Removed unused functions:
1533 - xbt/file.h: xbt_basename(), xbt_dirname(), xbt_getline()
1534 - xbt/graph.h: xbt_graph_edge_get_length(), xbt_graph_edge_set_length,
1535 xbt_graph_export_graphviz()
1536 - xbt/str.h: xbt_str_join()
1537 - Remove unused datatypes:
1538 - xbt/heap.h: use std::priority_queue or boost::heap instead
1539 - xbt/swag.h: use boost::intrusive::list instead
1542 - New link_energy plugin for the consumption of the links.
1543 - All of the operations on files and storage contents have been
1544 packaged into a plugin (src/plugins/file_system). The current
1545 public interface can be found in
1546 include/simgrid/plugins/file_system.h
1547 To use these functions you now have to initialize the plugin by
1548 calling MSG_storage_file_system_init() just after calling
1549 MSG_init() or sg_storage_file_system_init() just after creating
1553 - Remove the undocumented/untested tag <include>
1556 - Remove viva specific tracing as the tool is no longer maintained
1559 - #248: Kill of finished processes leads to segfault
1560 - #240: xbt_cond_wait_timeout should gracefully return for C apps
1561 - #239: please implement signal s4u::onDeadlock()
1562 - #230: segfaults when exit() without run()
1563 - #225: s4u::Actor::kill() doesn not really kill victims in a join()
1564 - #223: MSG_task_get_flops_amount() not working with parallel tasks
1565 - #222: Actor::kill() doesn't really kill and segfaults
1566 - #221: odd LMM warning when killing an actor
1567 - #120: Memory leak when the processes are forcefully killed
1569 ----------------------------------------------------------------------------
1571 SimGrid (3.17) Released October 8 2017
1573 The Drained Leaks release: (almost) no known leaks despite the tests.
1575 Even very long simulations will preserve your memory: our testsuite
1576 stresses SimGrid for over 45mn on fast machines for a coverage of
1577 over 80%, and there is only one single known leak, of about 4kb.
1581 - Comm.detach(): start and forget about asynchronous emission. A cleanup
1582 handler may be given to free resources if the comm cannot be completed.
1583 - this_actor::send(mailbox) is now mailbox->put()
1584 - New: simgrid::s4u::Comm::wait_all()
1585 - New: Host.execute() for remote executions.
1588 - Unused option network/sender-gap is removed.
1591 - Deprecate MSG_task_isend_with_matching(): This unused feature
1592 really complicates our internals. Will be removed in v3.20.
1595 - Improved context termination. It is now possible to free resources, even
1596 when a process is forcibly killed.
1597 - ContextBoost: add support for Boost versions above 1.61.
1600 - Bring back run-time option --cfg=exception/cutpath to remove exception
1602 - Removed unused functions:
1603 - xbt/str.h: xbt_str_split_str(), xbt_str_subst(), xbt_str_ltrim(),
1604 xbt_str_rtrim(), xbt_str_trim().
1605 - xbt/xbt_os_thread.h: xbt_os_thread_cancel(), xbt_os_thread_detach().
1608 - Removed header files obsolete since SimGrid 3.12:
1609 msg/datatypes.h, msg/msg.h, simdag/datatypes.h, simdag/simdag.h.
1611 - #3: SD_exit should be made optional
1612 - #120: Memory leak when the processes are forcefully killed
1613 - #159: Threading test regression in Actor refcounting
1614 - #170: simgrid::s4u::Comm::wait_any() returns too many comms
1615 - #185: simgrid::s4u::Engine::instance()->shutdown() segfaults
1616 - #186: Actor::killAll() segfaults if some process is blocked on wait()
1617 - #191: VM migration and pstate
1618 - #192: Updating the energy consumptions of all hosts crashes with VMs
1619 - #195: All actors have PID=0 in the logs
1620 - #204: Sometimes segfault with thread contexts and mmap privatization
1621 - #222: Actor::kill() doesn't really kill and segfaults
1622 - #225: Actor::kill() doesn't really kill when victims are doing a join()
1624 ----------------------------------------------------------------------------
1626 SimGrid (3.16) Released June 22. 2017.
1628 The Blooming Spring Release: developments are budding.
1631 - FreeBSD: Disable SMPI mmap privatization, switch automatically to dlopen.
1632 - Mac, BSD: dlopen+thread broken, switch automatically to raw contexts.
1633 - Java JAR file should be finally fully working on Mac OSX too.
1635 XML platforms: Switch to platform v4.1 format.
1636 * This is (mainly) a backward compatible change: v4 are valid v4.1 files
1637 - <zone> can be used as a synonym for the now deprecated <as>
1638 - <zoneRoute> can be used as a synonym for the now deprecated <asroute>
1639 - <bypassZoneRoute> can be used as a synonym for the now deprecated <bypassAsRoute>
1640 - <actor> can be used as a synonym for the now deprecated <process>
1641 - state_file and avail_file periodicity is now easier to express
1642 (check the documentation) the old behavior should still work.
1643 * Storage: not backward compatible, but it seems that nobody ever used it
1644 - Remove attribute 'content_type' of <storage_type>: was never used
1645 - Make attribute 'model' of <storage_type> optional: for future usage
1646 - Remove Bconnection model property: was never (in)validated. Replaced by
1647 the maximum of the read and write bandwidth as a resource constraint.
1650 - New and Backwards Compatibility break:
1651 SD_simulate_with_update (double how_long, xbt_dynar_t changed_tasks_dynar)
1652 When one wants to get the list of tasks whose states have changed during a
1653 simulation round, s/he has to allocate and free a dynar and use it as
1654 argument to this function. The former SD_simulate (double how_long)
1658 - Allow multicore VMs, with the correct sharing (unless you overcommit)
1659 BUG: vCPU overcommitting still leads to buggy sharing, though. WIP.
1662 - New function to update the consumption of all hosts at once.
1663 - Fix the model for multi-core hosts, linear in the amount of busy
1664 cores with an abnormality for pIdle (see paper).
1665 BUG: Still not satisfactory for ptask on mono-cores.
1668 - The netzone are now available from the MSG API.
1669 The old names still work, but are now deprecated.
1672 - New algorithm to privatize globals: dlopen, with dynamic loading tricks
1673 - New option: smpi/keep-temps to not cleanup temp files
1674 - New option: smpi/shared-malloc-blocksize . Relevant only when global shared
1675 mallocs mode is used, allows to change the size of the fake file used
1676 (default 1MB), to potentially limit the number of mappings for large runs.
1677 - Support for sparse privatized malloc with SMPI_PARTIAL_SHARED_MALLOC()
1678 - Fortran ifort and flang compilers support
1679 - New RMA calls supported (experimental):
1680 - MPI_Win_allocate, MPI_Win_create_dynamic, MPI_Win_attach
1681 - MPI_Win_detach, MPI_Win_set_info, MPI_Win_get_info
1682 - MPI_Win_lock_all, MPI_Win_unlock_all, MPI_Win_flush
1683 - MPI_Win_flush_local, MPI_Win_flush_all, MPI_Win_flush_local_all
1684 - MPI_Op_commutative, MPI_Fetch_and_Op, MPI_Compare_and_swap
1685 - MPI_Rput, MPI_Rget, MPI_Raccumulate, MPI_Rget_accumulate
1688 - New: this_actor::isMaestro() returns whether we are in kernel mode.
1689 - Behind the scene, ActivityImpl are now automatically refcounted.
1690 Removing this nasty bottleneck will greatly simplify our internals.
1693 - Replay: New function xbt_replay_action_get():
1694 Retrieve the function previously associated to an event type.
1695 - DROPPED FUNCTION: xbt_str_varsubst()
1696 - DROPPED MODULE: strbuff. We don't need it anymore.
1697 - DROPPED MODULE: matrix. We don't need it anymore.
1698 - DROPPED MODULE: lib. We don't need it anymore.
1700 -- Thu Jun 22 22:48:12 CEST 2017 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1702 SimGrid (3.15) Released March 22. 2017
1704 The Spring Release: continuous integration servers become green
1705 We fixed even the transient bugs on all target architectures:
1706 Linux (CentOS, Debian, Ubuntu, Fedora), Mac OSX (Mavericks, El Capitan)
1707 Windows, FreeBSD, NetBSD.
1709 - Rename NetCards to NetPoints.
1710 This was intended to help NS3 users, but that's not a netcard.
1711 That's a point in the routing algorithm, let's avoid wrong simplifications.
1714 - New: MSG_process_yield(). Stop and yield to other processes.
1715 - New: MSG_process_daemon(). Daemon processes are automatically killed
1716 when the last non-daemon process terminates
1717 - New: MSG_process_ref/unref(). Fiddle with the process refcounting.
1718 - Renamed MSG_energy_plugin_init() -> MSG_host_energy_plugin_init()
1719 to make room for the upcoming network energy plugin.
1720 - Drop MSG_host_get_current_power_peak: duplicates MSG_host_get_speed
1723 - Ensure that an actor can kill itself with Process::exit()
1724 - Kill the obscure NativeException. Nobody want to survive the issues
1725 it denotes, so use JniException that is a RuntimeException (not to
1726 be caught explicitly).
1727 - Partial bug fix in initialization. SimGrid flags on command line were
1728 consumed at C level but stayed in the original Java String[] args.
1729 This could mess users' args[i] if SG flags were not put at the end of
1731 The SimGrid flags are now removed from the Java arguments. However,
1732 the number of arguments REMAINS UNCHANGED. It is then UNSAFE to test
1733 if args.length is greater than the number of YOUR OWN ARGUMENTS.
1734 It might be if you have --log or --cfg flags in the command line.
1735 - Fix numerous memleaks all around the place. In particular, around VMs.
1739 - s4u::onPlatformCreated: right before the simulation starts
1740 - s4u::onSimulationEnd: right after the main simulation loop
1741 - s4u::onTimeAdvance: right after a clock change (time is discrete)
1742 - s4u::Host::onSpeedChange: when the pstate is changed, or when an
1743 event from the availability_file changes the avail speed.
1744 - Links are now usable from s4u
1745 - New: Engine::hostList() and Engine::hostCount(). Still clumsy.
1746 - New: Actor::suspend(), Actor::resume(), and Actor::migrate(new_host)
1747 - New examples: The conversion of MSG examples to S4U has begun
1748 - Actors: create, kill, migration, and suspend
1749 - Applications: master-worker and token-ring
1750 - Action replay: communications and storage
1751 - Drop Host::getPstateSpeedCurrent() which duplicates Host::speed()
1754 - Backwards Compatibility breaks
1755 - The SD_route_get_list and SD_route_get_size functions have been removed.
1756 They are replaced by the unique
1757 void sg_host_route(sg_host_t src, sg_host_t dst, xbt_dynar_t links)
1758 The route from src to dst is built in the links dynar whose size can
1759 be obtained with xbt_dynar_length.
1760 - The SD_route_bandwidth and SD_route_latency functions have been replaced by
1761 sg_host_route_bandwidth and sg_host_route_latency.
1762 Macros ensure the backwards compatibility, but you should fix your code
1765 - Major C++ rewrite ongoing (SMPI used to be C compiled in C++).
1766 This can break codes using SMPI internals (from private.h instead of the public smpi.h).
1767 - Bump our claim of support from MPI 1.1 to MPI 2.2.
1768 We don't support 100% of it, but it should be enough. Contact us if not.
1769 - MPI_Win_lock/unlock, MPI_Get_accumulate support added (as for all RMA, implementation is
1770 naive and probably inaccurate)
1771 - New algorithm for SMPI_SHARED_MALLOC: global, where all blocks are
1772 mapped onto a unique small file using some system magic.
1773 - Bugfix: smpirun was sometimes misusing hostfile when wrongly terminated
1774 - Fortran: cleanups, fixes, support of user-added operations
1775 - RMA: MPI_Accumulate are applied in correct order.
1776 - RMA: MPI_Win_{complete/post} shouldn't miss messages anymore.
1777 - Better support for MPI_IN_PLACE
1778 - Support for MPI_Win attrs and keyvals.
1779 - Support MPI_Comm_group_create, MPI_Type_size_x
1780 - MPI ops should be properly applied to all allowed types
1781 - Replace implementation of MPI_Bcast "scatter followed by rdb allgather"
1782 algorithm by a non failing one from mpich.
1785 - Kill the fifo data container: we don't use it anymore.
1788 - A <cluster> can now be created with different speed values to represent pstates.
1789 see examples/platforms/energy_cluster.xml for an example.
1791 SimGrid (3.14.159) Released December 28. 2016
1793 The previous release was only a crude approximation of a Pi release;
1794 this one should be a bit better.
1796 - Revert a last minute change that broke on Mac OSX.
1797 - Fix the changelog and NEWS files.
1798 - Improve the documentation, in particular of the routing module.
1799 - Integrate some patches flying around in Debian.
1801 SimGrid (3.14) Released December 24. 2016
1804 * The whole documentation was reworked and reorganized. There is
1805 still much room for improvement here, but we're on it.
1808 * We now need python3 for our testing infrastructure.
1809 * Model checking needs libevent
1812 * Now works on FreeBSD
1815 * Privatization now works on FreeBSD
1817 * Privatization is now activated by default in smpirun
1818 You can turn it off with -no-privatize if something goes wrong.
1820 * Call-location tracing for SMPI.
1821 You can add the exact location (filename / linenumber) of an MPI call to
1822 your trace files and slow down or speed up the simulation between two
1823 consecutive calls by using an adjustment file (see the documentation).
1825 * Fixed computation of timings for MPI_Send, MPI_Recv & possibly also others
1826 We've found a bug that prevented SMPI to account for MPI_Send, MPI_Recv
1827 and others (in some cases) in a correct way. That is, the smpi/os, smpi/or
1828 values were ignored in some cases. The timings of these functions can now
1829 be significantly different.
1831 * smpi/cpu-threshold:-1 should become smpi/simulate-computation:no
1832 smpi/running-power is renamed to smpi/host-speed
1834 * smpi/grow-injected-times option to enable or disable multiplication of the
1835 timings injected in MPI_Iprobe, or MPI_Test. Enabled by default, which can
1836 make simulation less precise (but also much faster).
1838 * smpirun script should be (much) faster for large deployments.
1840 * SMPI tracing: fixed issue with poor matching of send/receives.
1842 * Replay: Fix broken waitall
1844 New functions and features
1845 * MSG_parallel_task_execute_with_timeout, to timeout computations.
1847 Dropped / renamed functions and features
1848 * msg_mailbox_t and associated functions. Use s4u::Mailbox instead.
1849 - MSG_mailbox_is_empty() -> Mailbox::empty()
1850 - MSG_mailbox_front() -> Mailbox::front()
1851 - MSG_mailbox_get_by_alias() -> simgrid::s4u::Mailbox::byName(name)
1852 - MSG_mailbox_get_task_ext() -> MSG_task_receive_ext()
1853 - MSG_mailbox_get_task_ext_bounded -> MSG_task_receive_ext_bounded
1854 - MSG_host_(get/set)_params -> MSG_vm_(get/set)_params
1855 * Don't pass the free_f parameter to property related functions:
1856 - MSG_host_set_property_value()
1857 - MSG_as_router_set_property_value()
1858 - MSG_storage_set_property_value()
1859 * VM properties. Since msg_vm_t are msg_host_t, just use
1860 MSG_host_get_property_value() and friends
1861 * VM I/O related things:
1862 - Ignored parameter of vm_create: core_nb, disk_path and disk_size.
1863 - Unimplemented save/restore methods
1864 * MSG_as_router_get_property_value() was redundant with
1865 MSG_environment_as_get_property_value().
1866 - Removed MSG_as_router_*propert*() functions
1867 - Added MSG_environment_as_set_property_value() for consistency
1868 * xbt heterogeneous dictionaries (created with xbt_dict_new()).
1869 Well, they are still there for now, but deprecated with a warning.
1870 Please switch to xbt_dict_new_homogeneous() before this is removed
1872 * Task affinity. Its intended behavior (that was very badly tested
1873 and probably not really working) was deceiving what most users
1874 would have hoped here.
1875 * xbt_os_sem_get_value: unused internally, deprecated on OS X El Capitan
1876 * Option network/coordinates is now useless and should be dropped.
1879 * Added option storage/max_file_descriptors to allow more than 1024 files opened
1882 * Added option maxmin/concurrency_limit to allow more than 100 processes per host
1883 * Added Dragonfly topology support
1886 * Add Exa- and Peta- units such as EiB, EB, Eib, Eb for size, and
1887 EiBps, EBps, Eibps, Ebps for bandwidth.
1888 They may become useful to some lucky ones.
1891 * New functions: msg.Comm.waitAll() and msg.Comm.waitAny()
1892 * ex/app_tokenring: new example, very similar to the MSG Token Ring
1893 * ex/async_waitAll: new example, on asynchronous communications
1896 * Memory usage should be decreased for simulations with a large number
1897 of processes. This also helps for SMPI.
1899 SimGrid (3.13) stable; urgency=low
1901 The Half Release, a.k.a. the Zealous Easter Trim.
1903 - We removed half of the lines, that were mostly experimental cruft.
1904 v3.12 lasted 286000 lines of code, v3.13 is only 142000 lines
1905 (not counting blanks and comments -- according to openhub.net)
1906 - The internals are now compiled in C++ (and will soon be clean C++)
1907 - We removed 75 klines of XML, 12 klines of Java, 5 klines of cmake,
1908 59 klines of C, etc. We added only 29 klines of C++ in replacement.
1910 * Backwards Compatibility breaks
1911 - Removed Lua simulation bindings (switch to C or Java for that).
1912 Lua can still be used to describe platforms
1913 - Removed Java kernel plug-ins.
1914 Will be reintroduced after the ongoing major internals reorg.
1916 - the following functions were removed.
1917 They were too specific and should be reimplemented in a generic
1918 way, with filter function.
1919 - MSG_task_listen_from_host
1920 - MSG_mailbox_get_count_host_waiting_tasks
1921 - MSG_mailbox_put_with_timeout was removed.
1922 Please use MSG_task_send_with_timeout instead.
1924 - the SD_application_reinit function was removed. It has been a noop for a while.
1925 - The ACCESS_MODE of SD_workstation has been removed. This feature was not really usable and should soon be
1926 replaced by a more flexible mechanism.
1927 - The following functions thus do not exist anymore
1928 - SD_workstation_get_access_mode
1929 - SD_workstation_set_access_mode
1930 - SD_workstation_get_current_task
1931 - Basic estimation functions have been removed but can easily be replaced
1932 - SD_route_get_communication_time => SG_route_get_latency() + amount / SD_route_get_bandwidth()
1933 - SD_workstation_get_computation_time => amount / sg_host_speed()
1935 - VM.setBound(int load) is now VM.setBound(double bound) to meet the MSG semantics.
1936 Use VM.getSpeed()*load/100 for the legacy behavior.
1938 - option enable_tracing was removed. It was not doing anything for a while.
1939 - In the ModelChecker:
1940 - the model-checker now ptraces the model-checked process which means
1941 you cannot use a debugger on the latter anymore (we might make this
1942 optional in the feature);
1943 - removed soft-dirty page tracking;
1944 - remove model-checked side snapshot management,
1945 MC_snapshot() and MC_compare_snapshot();
1946 - keep the MC_cut() function as a stub (it was not really working
1947 in the previous release).
1950 * All options are consistently in kebab-case. Old names are kept as alias.
1953 * Switch to platform v4 format.
1954 - Rename from 'power' to 'speed' the attributes describing the amount of
1955 flops that a <host>, <peer>, <cluster> or <cabinet> can deliver per second.
1956 - In <trace_connect>, attribute kind="POWER" is now kind="SPEED".
1957 - In <host> and <link>, attributes availability and state are gone.
1958 It was redundant with state and availability traces, and with peak values.
1959 - In <cluster>, attributes availability_file and state_file are gone.
1960 It was too complex and unused.
1961 - Kill <gpu>. Was not doing anything.
1962 - The DOCTYPE points to the right URL:
1963 http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd
1964 (the file at this address now documents the changelog since its v1)
1965 - A warning is emitted for unit-less values (they are still accepted).
1966 - speed. Default: 'f' or 'flops'. Also defined:
1967 'Yf', 'Zf', 'Ef', 'Pf', 'Tf', 'Gf', 'Mf', 'kf'
1968 'yottaflops', 'zettaflops', 'exaflops', 'petaflops', 'teraflops', 'gigaflops', 'megaflops', 'kiloflops'
1969 - bandwidth. Default: 'Bps' bytes per second (or 'bps' for bits but 1 Bps = 8 bps)
1970 Also defined in bytes: 'TiBps', 'GiBps', 'MiBps', 'KiBps', 'TBps', 'GBps', 'MBps', 'kBps', 'Bps'
1971 And the same in bits: 'Tibps', 'Gibps', 'Mibps', 'Kibps', 'Tbps', 'Gbps', 'Mbps', 'kbps', 'bps'
1972 - latency. Default: 's' second. Also defined:
1973 'w' week, 'd' day, 'h' hour, 'm' minute, 'ms' millisecond, 'us' microsecond, 'ns' nanosecond, 'ps' picosecond
1975 * bin/simgrid_update_xml can upgrade your files automatically (won't convert unit-less values)
1976 tools/sg_xml_unit_converter.py may help (but it's just a warning and will probably ever be).
1979 * s4u::Host is now the preferred public interface to the Host features.
1980 sg_host_* functions are C bindings to the exact same behavior
1981 MSG_host_* and SD_workstation_* are #define to the sg_host_* ones
1984 * The examples were completely reorganized (in C and Java), for your browsing pleasure.
1985 * Kill all deprecated functions (the ones you had when declaring MSG_DEPRECATED).
1986 They were deprecated since a few years, and probably did not even compile anymore.
1989 * The API has been profoundly modified to directly use the core objects instead of redefining its own.
1990 SD_Workstation_t and SD_link_t are now sg_host_t and sg_link_t respectively.
1991 Some functions have also been renamed for consistency. Backward compatibility is maintained, but users are
1992 encouraged to update their codes. A list of the modified functions can be found at the end of
1993 include/simgrid/simdag.h
1996 * simgrid::simix::kernelImmediate() is the closure callback. It ensures that
1997 the lambda or closure passed as a parameter will run in kernel mode.
1998 All the callback functions should be rewritten to that interface at some point.
2001 * Reorganizing and cleaning the internals all around the place.
2004 * Remove old default barrier/bcast buggy algorithms (see #18407)
2005 * Various bug fixes to handle more codes
2006 * Remove the need for the --foreground option of smpirun (it is still
2007 accepted for backward compatibility).
2010 * Kill the setset data container: MC don't use it anymore.
2011 * Kill the queue data container: it made more sense with GRAS.
2012 * Kill the xbt_peer_t data type: it's useless without GRAS.
2013 * Kill rm_cb feature of config sets: it was never useful.
2014 * Kill graphxml parsing feature. It was not used.
2015 * Kill the deprecated code protected by XBT_USE_DEPRECATED
2017 - xbt_dynar_sort_strings(), when the content is char*
2018 - xbt_str_parse_int / xbt_str_parse_double, wrapping strtol/strtod
2019 They throw exceptions on invalid input;
2020 * C++ support for declaring CLI flags (simgrid::config::Flag);
2021 * class for abstracting different signal backends (simgrid::xbt::signal).
2022 with no external dependencies (we need very simple signals).
2025 * refactoring and cleanup of the code;
2026 * ongoing process to cleanly separate the model-checking algorithms
2027 from the code model-checking support.
2029 -- Wed Apr 27 21:00:53 CEST 2016 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2031 SimGrid (3.12) stable; urgency=low
2033 The Facelift Release.
2036 * Require g++ v4.7 at least to not speak prehistorical C++.
2037 * Require Boost 1.48 (for signal2 component).
2038 * Java must be version 7 at least when activated.
2039 * Builds on Windows again (including Java bindings).
2040 * Tracing is now always enabled (no way to turn it out)
2041 * Remove GTNetS. It was not working anyway.
2042 * Various cleanups in the cmake scripts.
2043 * Move headers around to sort them out on installed systems:
2044 - instr/instr.h -> simgrid/instr.h
2045 - instr/jedule/* -> simgrid/jedule
2046 - simdag/datatypes.h was removed
2047 - simdag/simdag.h -> simgrid/simdag.h
2048 - msg/datatypes.h was removed
2049 - msg/msg.h -> simgrid/msg.h
2052 * Interface improvement:
2053 - Rename MSG_host_is_avail(h) to MSG_host_is_on(h)
2054 - Sanitize the interface in MSG_task_ module:
2055 - Merge two functions that were close enough but misleading:
2056 set_compute_duration(t) -> set_flops_amount(t)
2057 get_remaining_computation(t) -> get_flops_amount(t)
2058 - set_data_size(t) -> set_bytes_amount(t)
2059 get_data_size(t) -> get_bytes_amount(t)
2060 - Massive cleanups in the functions related to the energy
2061 - MSG_host_get_pstate_number() -> MSG_host_get_nb_pstates()
2062 - New: MSG_host_get_pstate()
2064 - msg/energy/onoff: switching hosts on and off
2066 * Interface improvement:
2067 - Rename Host.isAvail() to Host.isOn()
2068 - Rename Process.currentProcess() to Process.getCurrentProcess()
2069 - Rename Task.setDataSize() to Task.setBytesAmount()
2070 - Merge Task.getRemainingDuration() and Task.getComputeDuration() into Task.getFlopsAmount()
2072 - #18874: Actually allows the GC to reclaim tasks
2076 - SIMIX_process_throw: raises an exception in a remote process
2077 * Refactoring: Separate sub-modules
2078 - libsmx: the public interface, as libc in a real system
2079 - popping: the strange dance that converts a user request into a kernel handling
2080 - smx_context_*: the virtualization mechanisms that embed the user code
2081 - smx_*: the handling of each simcalls
2082 * Interface cleanup:
2083 - simcall_host_set_power_peak_at -> simcall_host_set_pstate
2084 * Rename smx_action_t into smx_synchro_t, making explicit that these
2085 things are used to synchronize processes with their environment.
2086 For example, a communication is a sort of synchronization involving
2087 the communicating processes (that may block until the exchange) and
2088 the platform. The same can be said from computations, etc.
2090 - #18888: segfault when a process ends before its kill_time
2094 - Onesided early support for: MPI_Win_(create, free, fence, get_name, set_name, get_group), MPI_Get, MPI_Put, MPI_Accumulate, MPI_Alloc_mem, MPI_Free_mem.
2095 - MPI_Keyval*, MPI_Attr* functions, as well as MPI_Comm_attr*, MPI_Type_attr* variants (C only, no Fortran support yet)
2096 - MPI_Type_set_name, MPI_Type_get_name
2097 - MPI_*_c2f and MPI_*_f2c functions
2098 - MPI_Info_* functions (beware, get_nthkey may not follow the insertion order)
2099 - MPI_Pack, MPI_Unpack and MPI_Pack_size functions
2100 - Activate a lot of new tests from the mpich 3 testsuite
2102 - Constant times can be injected inside MPI_Wtime and MPI_Test through options smpi/wtime and smpi/test
2103 - InfiniBand network model added: Based on the works of Jerome Vienne
2104 http://mescal.imag.fr/membres/jean-marc.vincent/index.html/PhD/Vienne.pdf
2105 - When smpi/display_timing is set, also display global simulation time and application times
2106 - Have smpirun, smpicc and friends display the SimGrid git hash version on --git-version
2107 * Collective communications
2108 - SMP-aware algorithms are now dynamically handled. An internal communicator is created for each node, and an external one to handle communications between "leaders" of each node
2109 - MVAPICH2 (1.9) collective algorithms selector: normal and SMP algorithms are handled, and selection logic is based on the one used on TACC's Stampede cluster (https://www.tacc.utexas.edu/stampede/).
2110 - Support for Rabenseifner Reduce/Allreduce algorithms (https://fs.hlrs.de/projects/par/mpi//myreduce.html)
2112 - Replay now uses algorithms from wanted collective selector
2113 - Replay can be used with SMP-aware algorithms
2114 - Memory occupation of replay should now be contained (temporary buffers allocated in collective algorithms should be shared between processes)
2115 - Replay can now replay several traces at the same time (check examples/smpi/replay_multiple example), to simulate interactions between several applications on a given platform. User can specify the start time of each instance. This should also allow replay + actual applications to run.
2117 - [#17799]: have mpi_group_range_incl and mpi_group_range_excl better test some corner cases
2118 - Correctly use loopback on fat-tree clusters
2119 - Asynchronous small messages shouldn't trigger deadlocks anymore
2120 * Energy/DVFS cleanup and improvement
2121 - smpi_set_host_power_peak_at() -> smpi_set_host_pstate()
2122 - new: smpi_get_host_pstate()
2125 - "Full" network optimization flag was broken since Surf++
2126 - Better handling of precision flags in maxmin
2127 - Fix bug causing sometimes "Impossible" errors
2128 - Properly pass cluster properties to included hosts
2129 * Improvement of the Energy plugin.
2130 - Always update the consumption before returning that value
2131 - New property: watt_off to denote the dissipation when the host is off
2132 - New functions getWattMinAt and getWattMaxAt to retrieve the
2133 dissipation of pstates that we are not currently at.
2134 * Java: class NetworkLink renamed to Link
2135 * New function: simcall_process_get_kill_time()
2136 * Massive rename s/workstation/host/
2137 - That's intrusive, but that's good for the project consistency. Sorry.
2138 - Change config option "workstation/model" into "host/model"
2141 - Add a xbt_heap_update function, to avoid costly xbt_heap_remove+xbt_heap_insert use
2142 - Add a xbt wrapper for simcall_mutex_trylock (asked in [#17878])
2143 - Add two new log appenders: rollfile and splitfile. Patch by Fabien Chaix.
2144 - xbt_dirname and xbt_basename for non-POSIX systems
2146 * The model checker now runs as a separate process.
2147 * The model checker runs must now be launched with the new simgrid-mc program.
2148 * Record/Replay: the MC can display a textual representation of a path in the
2149 execution graph. It can then be replayed outside of the model checker.
2151 -- Mon Oct 12 06:02:41 CEST 2015 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2153 SimGrid (3.11) stable; urgency=low
2158 * Normalizing pointers addresses tool for better diff between logs
2161 * Add cloud examples using new VMs
2162 - examples/msg/cloud/two_tasks_vm.tesh
2163 - examples/msg/cloud/simple_vm.tesh
2164 - examples/java/cloud/cloud.tesh
2165 - examples/java/cloud/migration/migration.tesh
2166 * Add java surf examples:
2167 - examples/java/surfPlugin/surf_plugin.tesh
2168 - examples/java/reservationSurfPlugin/reservation_surf_plugin.tes
2169 - examples/java/surfCpuModel/surf_cpu_model.tesh
2170 * Add SMPI+MSG example:
2171 - examples/smpi/smpi_msg_masterslave/
2176 - msg task destroy cancel test
2177 - msg_host on/off test
2178 * Move all tests in testsuite to teshsuite (adding tesh files)
2179 * Restructure teshsuites
2180 - one folder for each kind of test
2181 * Restructure AddTests.cmake
2183 - structure the order of tests (with sections)
2186 * Add virtual machine
2187 - creation of a VM on a PM
2188 - migration of a VM from a PM to another PM
2190 - MSG_process_join(msg_process_t process, double timeout)
2191 - msg_bar_t MSG_barrier_init(unsigned int count)
2192 - int MSG_barrier_wait(msg_bar_t barrier)
2193 - void MSG_barrier_destroy(msg_bar_t barrier)
2194 - msg_as_t MSG_environment_as_get_by_name(const char * name)
2195 * New option "msg/debug_multiple_use" to help debugging when a task is used
2198 - Improvements and finalization of MSG_storage, MSG_file APIs and their
2200 - Increase code coverage in test suites
2204 * Protect context stacks against stack overflow. The number of protected memory
2205 pages allocated on the top of each stack (1 by default) can be configured
2206 with the new command line option --cfg=contexts/guard_size:<value>.
2207 * Simcalls are now generated by a python script that
2208 - generates files included by SimGrid
2209 - checks that all the functions exist, and proposes prototypes
2211 - remove sem_destroy, file_set_data, comm_destroy, vm_set_state,
2212 host_set_data, host_get_data
2214 - simcall_process_join(smx_process_t process, double timeout)
2215 * Fix bug where sleeping processing could not be suspended.
2218 * Translate surf models from C to C++
2219 - Generic classes for all models: Model, Resource, Action
2220 - A generic interface for each kind of model (CPU, Network, Storage
2221 Workstation, WorkstationVM)
2223 * Translate surf routings from C to C++
2224 * Add callbacks using sigc++ or boost::signals2
2225 - Add callback functions for resource creation/destruction
2226 - Add callback functions for action state change
2227 - Handle Energy as a plugin
2228 * Replace swag by boost::intrusive
2229 * Add new routing models for clusters. For documentation, see
2230 http://simgrid.gforge.inria.fr/simgrid/latest/doc/platform.html#pf_cluster
2231 - tori, with topology="TORUS" and topo_parameters="ndim1,ndim2,...,ndimn"
2232 parameters for cluster tag
2233 - Fat trees, with topology="FAT_TREE" and
2234 topo_parameters="h;m1,...,mh;w1,...,wh;p1,...,ph" parameters for cluster tag
2235 - see examples/platforms/torus_cluster.xml and
2236 examples/platforms/fat_tree_cluster.xml
2237 * More documentation
2240 * Hostfiles support host:nb_processes construct to deploy several processes on
2242 * Collective communication algorithms should not crash if used with
2243 improper number of nodes and report the error.
2244 * SMPI now partially supports MPI_Topologies: MPI_Cart_create, MPI_Cart_shift,
2245 MPI_Cart_rank, MPI_Cart_get, MPI_Cart_coords, MPI_Cartdim_get,
2246 MPI_Dims_create, MPI_Cart_sub are supported.
2247 * New interface to use SMPI programmatically (still depends on MSG for
2248 some parts, see examples/smpi/smpi_msg_masterslave):
2249 - SMPI_app_instance_register(const char *name, xbt_main_func_t code,
2253 * Global variables privatization in MPI executables is now performed at runtime
2254 with the option smpi/privatize_global_variables (default:no).
2255 Limitations: Linux/BSD only, with mmap enabled. Global variables inside
2256 dynamic libraries loaded by the application are not privatized (static
2257 linking with these libraries is advised in this case)
2260 * Options defined in XML work correctly now.
2263 * New cmake option, enable_lib_in_jar, to control whether native libraries are
2264 copied into simgrid.jar or not (ON by default). Use this option if you want
2265 to reduce the size of the installed simgrid.jar, *and* the native libraries
2266 are kept installed elsewhere.
2267 * Surf binding with SWIG (code generated in maintainer mode only):
2268 - plugin to handle callbacks
2269 - CPU model only for the moment
2272 * Supernovae build mode is definitively removed. It was used to improve
2273 inlining and inter-module optimizations. It is nowadays superseded by
2274 link-time optimizations commonly available in compilers.
2275 * Update ns-3 find lib. Bindings for ns-3 should work again now.
2276 * Add boost dependency for surf++
2277 * Add new macro for tests
2278 - ADD_TESH(name <tesh_args>)
2279 - ADD_TESH_FACTORIES(name "thread;ucontext;raw" <tesh_args>)
2283 - xbt_bar_t XBT_barrier_init(unsigned int count)
2284 - int XBT_barrier_wait(xbt_bar_t barrier)
2285 - void XBT_barrier_destroy(xbt_bar_t barrier)
2286 * Make the xbt_os_time module public
2288 -- Sat May 31 22:39:38 CEST 2014 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2290 SimGrid (3.10) stable; urgency=low
2292 The Clean Diaper Release, a.k.a. SimGrid is leak-free.
2295 * Reintegrate Java to the main archive as desynchronizing these
2296 package is not acceptable anymore (Java is now considered stable)
2297 * Add explicit synchronization facilities through semaphores
2298 * Bug fix: Task.setDataSize() only changed the C world, not the value
2299 cached in the Java world
2302 * Dramatically change the way files are handled. API and internals changed, but
2303 this part of MSG was not considered as production grade either.
2304 * Add explicit synchronization facilities through semaphores
2305 * Add a new function MSG_host_get_process_list()
2306 * Preliminary DVFS support (see examples/msg/energy/ for details)
2309 * SMPI is now included directly in the libsimgrid as the windows
2310 linker doesn't force us on splitting it anymore.
2311 * Improvements of the SMPI replay tool:
2312 - Most of the collective communications are now rooted in the same process as
2313 in the original application.
2314 - Traces now rely on the same MPI data type as the application (MPI_BYTE was
2315 used until now). Multiple data types can now be used in a trace.
2316 - The replay tool now supports traces produce either by TAU or a modified
2318 - Bug Fix: the compute part of the reduce action is now taken into account.
2319 - Gatherv collective is now supported
2320 - SimGrid (SMPI for now) can generate replay traces as well. Option -trace-ti
2321 of smpirun outputs time independent traces for the current run. One file
2322 is created per process. If too many processes are simulated, this behavior
2323 can be changed to one file for all processes by using the
2324 tracing/smpi/format/ti_one_file flag
2325 * smpirun generates the host file if needed (with given host count and platform)
2326 * Integration of more than 100 STAR-MPI, MPICH, OpenMPI collective algorithms
2327 - allows to select one in particular with --cfg=smpi/coll_name:algorithm
2328 - allows to use the decision logic of OpenMPI(1.7) or MPICH(3.0.4) by setting
2329 --cfg=smpi/coll_selector:(mpich/ompi)
2330 * Support for new functions: MPI_Issend, MPI_Ssend, Commutative operations in
2332 * Add a --cfg:tracing/smpi/internals option, to trace internal communications
2333 happening inside a collective SMPI call.
2334 * Fix the behavior of complex data types handling.
2335 * Make MPI_Wtime another synchronization point to take computations into
2337 * Replace MPICH-1 test suite by the one from MPICH 3.0.4. Can be built using
2338 enable_smpi_MPICH3_testsuite flag in cmake. Run with ctest.
2339 * Add all missing Fortran bindings, SMPI should work with Fortran 90
2340 (no privatization of global variables yet)
2341 * Preliminary DVFS support (see examples/smpi/energy/ for details)
2344 * Verification of liveness properties is now available for SMPI applications
2345 (in addition to MSG applications)
2346 * Bugged examples using SMPI in examples/smpi/mc/
2347 * Add --cfg=model-check/visited option. Allows the verification of infinite
2348 programs. Detection of loops in the execution thanks to the system state
2349 comparison and reduction of the state space to explore. Can be combined with
2350 DPOR for safety properties.
2353 * Allow to change SimGrid configuration (see --help) within the code
2354 thanks to SD_config() as it can be done in MSG.
2355 * Add a new function SD_task_set_amount() upon user request.
2358 * Handle units for values (10ms, 10kiloflops, 10Bps, 1GB, ...)
2359 * Remove rule based routing (no more PCRE dependency)
2360 * Add a limiter_link option to cluster tag, to specify a maximum reachable
2361 bandwidth in fullduplex mode when it is less than twice the nominal bandwidth.
2362 * Add a loopback_bw and loopback_lat options to cluster tag.
2363 * Fix the peer tag that could not be mixed with other AS within a Vivaldi
2364 routing. Now peers are encapsulated in an AS and have their own private
2365 router but this is transparent.
2368 * Our own implementation of getline is renamed xbt_getline, and gets
2369 used even if the OS provide a getline(). This should reduce the
2370 configuration complexity by using the same code on all platforms.
2371 * New type: xbt_cfg_elm_boolean.
2372 * Allow to use yes/no for boolean configuration options in the command line.
2373 * Allow to disable SimGrid cleanups at exit from command line option.
2374 There are situations where one may want a simulation to end with an exit.
2375 Unfortunately, calling exit may cause SimGrid to segfault, which is quite
2376 annoying when scripting around the simulator. Adding a
2377 --cfg=clean_atexit:no allows to circumvent this issue.
2380 * Lots of memory leaks were corrected in this release.
2381 There is no known memory leaks anymore, in all of our 600+ tests.
2382 * New command line option --version, to get SimGrid version information.
2383 Packagers may want to add extra words to SIMGRID_VERSION_EXTRA defined in
2385 * Supernovae builds are deprecated, and expected to be removed in the next
2388 -- Sun Nov 17 00:26:44 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2390 SimGrid (3.9) stable; urgency=low
2392 The Grasgory release: GRAS is really dead now.
2394 * Complete overhaul of the internal host structures scheme.
2397 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
2398 was considered as experimental and badly maintained since then.
2399 * Keeping it was thus a trap to our potential users, that could take
2400 it instead of MSG or SMPI by mistake despite is pity state.
2401 * GRAS seems to have very few users (if any), and no one volunteered
2402 to maintain it further. It also induces a lot of XBT code (for
2403 portability sake), that must be maintained too.
2404 * For all these reasons, we killed GRAS. If someone wants to revive it
2405 in the future, don't cry, our git history still remembers of GRAS.
2408 * Major overhaul. Merge our documentation again as time proved that
2409 splitting it was really not helping our users.
2410 * Further improve the developer documentation to help newcomers
2411 hacking on SimGrid itself. The user documentation (and in
2412 particular, the beginner documentation) is still in a sorry state.
2415 * Now works on Windows too!
2416 * Much more extensive test suite, from MPICH
2419 * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
2420 (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
2421 dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
2422 * Bug fix: let task be scheduled when the last dependency to be solved is
2423 a control dependency.
2424 * Remove SD_load_environment_script function.
2425 Use the C sg_platf function if you want to declare a platform
2429 * New function: MSG_process_get_number()
2430 * Old function documented: MSG_config()
2431 * Remove MSG_load_platform_script function
2432 Use the C sg_platf function if you want to declare a platform
2436 * Change the default value of the TCP_gamma constant (maximal size of TCP
2437 congestion window) to a more realistic 4MiB value. If you notice changes in
2438 your simulation results, you can fall back to the previous 20k tiny window
2439 by adding --cfg=network/TCP_gamma:20000 on command line.
2440 * (Hopefully) fix a bug wrt periodic availability and state traces
2441 * Bug fix: use default values at start when first event in availability/state
2442 trace is not at time 0.
2445 * remove the "new_" part of function name sg_platf_new_trace_connect
2446 (resulting in sg_platf_trace_connect), since it does not create
2450 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
2451 use case where it's really mandatory, and maintaining it was a pain in
2453 * New: xbt_fifo_search(), search an item with a user-provided
2454 comparison function instead of dumb pointer comparison.
2457 * Fix the lua deployment:
2458 Use `simgrid.init_application()` before deployment instead of
2459 `simgrid.msg_register_application()` after.
2462 * Transfer the tracing files into the corresponding modules.
2464 -- Tue Feb 5 11:31:43 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2466 SimGrid (3.8.1) stable; urgency=low
2468 The "we are told that some people want to also *install* the simgrid
2471 * Add missing file "tesh.1" to the archive.
2473 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2475 SimGrid (3.8) stable; urgency=low
2477 The Psssshiiiit release: SimGrid jumps into the Cloud.
2480 * Add an experimental interface to manipulate VMs. They are mainly
2481 process groups with very few intrinsic semantic, but they should
2482 allow you to build the semantic you want easily.
2483 * New function: MSG_host_set_property_value()
2484 * New function: MSG_process_on_exit(). To clean memory in all cases.
2485 * Bug fixes that made the host (and link) failures unusable.
2486 * Add a way to auto-restart process when the host in which they are
2487 executing comes back (ON_FAILURE="RESTART" on deployment file,
2488 MSG_process_auto_restart_set).
2489 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
2490 please stop using the old ones, they are DEPRECATED.
2492 * Deprecate functions MSG_global_init() / MSG_global_init_args()
2493 Please use MSG_init() instead. (reducing the amount of entry
2494 points in the library helps us).
2495 * Make it impossible to link against the wrong version of the lib
2496 * Deprecate MSG_clean(). No need to call it anymore.
2497 * Function MSG_get_host_number() is not deprecated anymore.
2500 * Split the doc into a user guide and a reference guide.
2501 * Start a developper guide to help people hacking on SimGrid.
2504 * Enable tracing by default. This modules rocks you should use it.
2505 * Remove option custom_flags. Now use environment variables CFLAGS
2507 * Use default cmake things to detect lua instead of home grown ones.
2508 * New option "enable_mallocators" to disable mallocators, for debugging
2509 purpose ("on" by default).
2512 * Bug fixes around the resource failures: don't let the processes
2513 survive the host they are running onto.
2514 * Add an interface to auto-restart processes when the host in which they are
2515 executing comes back.
2516 * Ensures that SIMIX_clean is called automatically. It's not part of
2517 the public interface anymore (bindings should be updated).
2520 * Bug fix for when SD_Simulate is called with a positive value: be careful
2521 when comparing doubles. Sometimes they are different for non significant
2523 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
2524 parallel task whose initial work is distributed among host according
2525 to the Amdahl's law. Such tasks are created with a parameter alpha
2526 that corresponds to the non-parallelizable part of the computation.
2527 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
2528 between two sets of workstations assuming a 1D block distribution (each
2529 workstation owns a similar share of data) on both sides.
2531 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
2532 Data redistribution will be automatically scheduled once parent and child
2533 are both scheduled. The filling of computation_amount and
2534 communication_amount structures is now done seamlessly thanks to the chosen
2536 * New function SD_workstation_dump to display various information
2537 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
2538 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
2539 bandwidth on the route onto which the task is scheduled and the amount of
2541 To divide the nominal bandwidth by 2, the rate then has to be:
2542 rate = bandwidth/(2*amount)
2543 * Compute tasks that have failed can now be rescheduled and executed again
2544 (from their beginning)
2545 * Increasing source code coverage (src/simdag is now covered at 95.8%
2549 * Re-implement time-independent trace replay using SMPI (at the
2550 smpi_smp_* level) instead of MSG. This should replace
2551 examples/msg/actions/actions.c
2552 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
2553 hindexed and structs)
2554 * Implement the exchange of non-contiguous data.
2555 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
2556 * Correct behavior of smpi/sender_gap and set its default value to 0
2557 * Add option to asynchronously send small messages to allow better
2558 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
2559 specifies the size in bytes under which messages will be asynchronously sent.
2560 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
2561 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
2564 * New C interface to define a platform: XML is now optional.
2565 For more info, please check include/simgrid/platf.h.
2566 * New interface to define random platforms from the C:
2567 For more info, please check include/simgrid/platf_generator.h and
2568 examples/msg/masterslave/masterslave_platfgen.c
2569 * Export a sg_cmdline dynar containing all the arguments we got from
2573 * Two new tracing options for adding comments to trace file so you
2574 can track your experiments (see --help-tracing for details).
2575 * New option to generate an impoverished trace file (--cfg=tracing/basic:1)
2576 * Adding the SimGrid version that generated the trace file as a comment.
2577 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
2578 * Fix to avoid key clashes on Paje links
2579 * Other minor fixes related to the Paje specification
2582 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
2583 and renamed to xbt_str_hash() and xbt_str_hash_ext().
2584 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
2585 * Greatly improve the robustness of mmalloc to user errors (such as
2586 using an area after freeing it, or freeing it twice)
2588 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2590 SimGrid-java (3.8.1) stable; urgency=low
2592 * New module: org.simgrid.trace.Trace (SimGrid trace bindings)
2593 Warning: all methods are visible, but only some of them are
2594 implemented so far. Check the source (src/jtrace.c)
2595 for further information.
2596 * New module: org.simgrid.msg.File (SimGrid File management functions)
2597 * New Module: org.simgrid.msg.VM (SimGrid interface to mimick IAAS clouds)
2598 * Change the meaning of Process.restart: now restart the process from
2599 the beginning, like MSG_process_restart in C.
2600 * Add Process.setAutoRestart: handling of process restart when failed
2602 * Add Process.getProperty, Host.getProperty, Host.getProperty: allows
2603 you to retrieve the properties of the processes/hosts
2604 * Deprecate Msg.clean(): you can just forget about it now.
2605 * New function Process.getCount(), that only works when compiling
2606 with the not yet released version 3.9 of the C library.
2608 * New context factory based on Coroutines. It mandates a modified JVM
2609 but then, the simulations run about five times faster, and there is
2610 no limit to the amount of processes (beside of the available memory).
2612 -- 2012-12-04 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2614 SimGrid (3.7.1) stable; urgency=low
2617 * Restore the prototype of MSG_process_create_with_environment() to
2618 the pre-3.7 situation by removing the kill_time argument.
2619 * Add a MSG_process_set_kill_time() function instead.
2622 * Fix weird behaviors when dealing with parallel tasks.
2625 * Simgrid is now built as a dll.
2626 * Simgrid-java now works on Windows.
2627 * Simgrid-Java is now included into Windows package.
2630 * First pre-build package for MacOSX.
2633 * Fix compilation when using MSG_USE_DEPRECATED.
2634 * Fix some compilation issues on Macs and Windows.
2635 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
2636 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
2638 We discovered that the Lua console is broken, but we are missing the
2639 manpower to fix it right now. The problem existed in 3.7 too, so we
2640 are not blocking the release for that. Sorry if you depended on this
2641 feature, any help would be really welcome.
2643 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2646 SimGrid-java (3.7.1) stable; urgency=low
2648 The "Java aint got to be bloated and slow" release
2651 * Various internal cleanups and performance improvement
2652 Simulations are expected to run up to twice faster or so
2653 * Make Process.kill(process) an instance method, not a static one
2654 * User processes are not java.lang.Thread subclasses.
2655 This breaks the compatibility (sorry), but previous API was
2656 brain-dead, making it impossible to have non-trivial
2657 initializations in the process constructor.
2658 * Require a full constructor per Process sub-class.
2659 Kinda breaks the compatibility (sorry), but this allows a much more
2660 efficient way to launch the processes at simulation startup.
2661 * Do not embeed our version of semaphores, java 1.5 can be considered
2662 as sufficiently prevalent for us to not dupplicate its features.
2666 * Add examples for almost every part of the API
2667 We spotted and fixed a lot of bugs in the process
2669 * New module: asynchronous communication API
2670 * New function: Process.sleep()
2671 It takes milliseconds as argument, just as java.lang.Thread.sleep()
2672 * New module: org.simgrid.msg.Mutex (SimGrid mutexes)
2673 * New module: org.simgrid.msg.RngStream (RngStreams random generators)
2675 -- 2012-06-12 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2677 SimGrid (3.7) stable; urgency=low
2679 The "spring cleanups (before the next Big Project kicks in)" release.
2682 * We can specify the SMPI latency/bandwidth factor with command line
2683 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
2684 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
2685 You can also use the "config tag" from platform file by adding this line
2686 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
2687 (see "example/platforms/tag_config.xml" to use "config tag").
2688 Note that the command line supersedes the platform file configuration.
2689 * Change the correction factors used in LMM model, according to
2690 the latest experiments described in INRIA RR-7821.
2691 Accuracy should be improved this way.
2692 * Use the partial invalidation optimization by default for the
2693 network too. Should produce the exact same results, only faster.
2694 * Major cleanup in surf to merge models and split some optimization
2695 mechanisms from the core of the models. As a result you can now
2696 specify which model to use (e.g., --cfg=network/model:LV08
2697 --cfg=cpu/model:Cas01) and which optimization mode to use
2698 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
2699 Incompatible combinations should err at initialization. See
2700 --help-models for the list of all models and optimization modes.
2701 * The CLM03 workstation model was dropped for simplicity because it
2702 used the deprecated CM02 network model. Use default instead.
2703 * Rename the TCP_gamma configuration option to network/TCP_gamma
2704 * Rename the coordinates configuration option to
2705 network/coordinates, and document it
2706 * Use now crosstraffic keyword instead of the terribly misleading
2707 fullduplex keyword. It is activated by default now in the current
2708 default model, use --cfg=network/crosstraffic:0 to turn it off.
2709 * Ongoing refactoring the model parsing to make XML files optional
2710 See include/simgrid/platf.h for details (still to be completed)
2713 * Major overhaul of the documentation. Almost instructive now :/
2714 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
2715 functions and friends. This interface was considered as
2716 deprecated since over 2 years, it's time to inform our users that it is.
2717 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
2718 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
2719 use these (crappy) functions in your code.
2720 These functions will be removed soon. Stop using them now.
2721 * Deprecate MSG_get_host_{table,number}
2722 Implement MSG_hosts_as_dynar() instead.
2723 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
2724 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
2727 * Stabilize the parallel execution mode of user contexts
2728 * Introduce configuration variables to control parallel execution:
2729 - contexts/synchro: Synchronization mode to use when running
2730 contexts in parallel (either futex, posix or busy_wait)
2731 - contexts/parallel_threshold: Minimal number of user contexts
2732 that must be part of a scheduling round to switch to parallel
2733 execution mode (raw contexts only)
2734 * Fix bugs that prevented to use suspend/resume along with
2735 synchronization structures.
2736 * Fix bugs in process termination that lead to invalid memory access
2737 in very specific conditions.
2740 * Introduce a parallel mode for the models (controlled by surf/nthreads
2741 configuration item). In our tests, running the models in parallel
2742 never lead to any speedups because they are so fast that the gain
2743 of computing each model in parallel does not amortizes the
2744 synchronization costs, even when ultra fast futexes are used.
2745 This is released anyway because YMMV.
2748 * Performance boost by using a swag internally to compute the set of
2749 tasks that are finished and should constitute the return value of
2753 * Enable it by default now that it is considered rather stable.
2756 * Documentation of the tracing functions.
2757 * Performance gains when tracing categorized/uncategorized resource
2758 utilization by avoiding calls to get route when updating resource
2759 variables. LMM constraints are being used instead.
2760 * API changed to set task categories. Use MSG_task_set_category instead
2761 of TRACE_msg_set_task_category, and SD_task_set_category instead
2762 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
2763 * Bugfix for graphicator, routes not correctly obtained, memory leaks
2764 * Examples for link user variables added (see at examples/msg/tracing/)
2765 * Deprecated function TRACE_msg_set_process_category completely removed
2766 * Trace header updated according to the latest Paje file format
2767 * Tracing network lazy updates, no longer obligate users to use full updates
2768 * --cfg=tracing/platform:1 also registers power/bandwidth variables
2769 * Experimental: let user code declare/set/push/pop application states for hosts
2770 * API changed to allow the manual creation of graph configuration files
2771 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
2774 * Improve the API of Lua MSG bindings, using the Lua spirit.
2775 * Each simulated process now lives in its own Lua world (globals are
2776 automatically duplicated). It helps writing simulators. Will allow
2777 to run Splay programs within SimGrid in the future.
2778 * Add a Chord example in Lua, equivalent to the MSG one.
2781 * Start the implementation of a solution to express temporal
2782 properties, not only local assertions. This is still an
2783 experimental work in progress, stay clear from it to be safe.
2787 - Add new runtime parameters --help-logs and --help-log-categories
2788 to display information about supported logging parameters and
2790 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
2791 don't exists anymore.
2792 * Mallocators: allow value NULL for the reset function.
2794 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
2795 create homogeneous dictionaries, where all the elements share the
2796 same free function. Non homogeneous dictionaries will be
2797 deprecated in the next release.
2798 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
2799 - Multi-level dictionaries are deprecated.
2801 - new function xbt_dynar_search_or_negative() that is useful when
2802 you have less than 2 million elements in your dynar and don't
2803 want of the extra complexity of catching exceptions when the
2804 element is not found.
2806 - Make xbt_os_thread module (for thread portability) public.
2807 Documentation is still to come, sorry.
2809 - Cleanups and simplifications to make it maintainable again.
2810 - Exotic features (such as memalign and valloc) were removed.
2811 - The metadata were extended and improved so that the
2812 model-checker becomes able to explore and inspect the heaps.
2813 - This may induce a performance drop when enable_model-checking is
2814 ON in cmake (even if it's not used in the simulation), but it is
2815 necessary at this point to get MC working.
2817 Turn model-checking OFF if simulation performance matters to you.
2818 Not enabling it at runtime is not enough, disable it in cmake.
2820 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2823 SimGrid (3.6.2) stable; urgency=low
2825 The "Not coding new stuff allows to polish old things" release.
2828 * New bindings to the NS3 packet level simulator (experimental)
2829 * Use the raw (efficient) execution contexts instead of the sysv
2830 (portable) ones when possible.
2831 * libpcre is now mandatory in any cases since not using it led to
2832 severe performance loss and possibly other issues
2833 * Update the XML platforms:
2834 - G5K: include the latest machine in Nancy
2835 - GridPP and LCG: new platforms
2836 * Documentation was partially updated, at least (more to come)
2838 Bug fixes, cosmetics and small improvements
2839 * Free terminated processes before the end of the simulation to avoid
2840 exhausting the memory of users having very dynamic amount of
2842 * Bug fix and cosmetics about canceling non-running tasks
2843 * Bug fix about the dot loader's issues when using libcgraph
2846 * Create an installer for windows with nsis (amd64 and win32)
2847 - Add an hello world project to illustrate SimGrid project creation.
2848 - Embed libpcre into the SimGrid installer to avoid
2849 its compilation burden
2850 * The raw execution contexts should work on Apple now
2851 * Port to Windows 64 bits
2852 - Sysv contexts now have an implementation for this arch
2853 - GRAS communication features now support this arch
2854 * Drop support for borland compiler on windows
2855 - this code was not maintained, and we kinda depend on gcc nowadays
2856 * Fix portability issues on kfreebsd/gnu: build error about semaphores
2857 * Fix portability issue on unstable ubuntu: linker became picky on
2860 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2862 SimGrid (3.6.1) stable; urgency=low
2864 The "Oops, we broke Macs too" release
2867 * Fixed contexts detection so that raw ones are used when possible
2868 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
2869 leads to a strange error, with user code segfaulting sometimes when
2870 the generated code is not perfectly aligned (which is not
2871 controllable from the user side, depends on the amount of code)
2874 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
2876 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2878 SimGrid-java (3.6) unstable; urgency=low
2881 * Split of every thing from SimGrid v3.5 into a separate package.
2883 -- 2011-10-05 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2885 SimGrid (3.6) stable; urgency=medium
2887 The Summer Release, also known as the "OMG! They Killed Kenny!" version
2890 * Bindings now constitute their own package, separated from the main one.
2891 Rationale: reduce our maintenance nightmare by reducing the module coupling
2892 They will soon be released on their own on gforge.
2894 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
2895 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
2897 GRAS: It is not considered as stable anymore, but experimental. Sorry.
2898 * It's not quite deprecated for now because we have no replacement,
2899 but it may soon become the case.
2902 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
2903 * Fortran: New user-level cache variable to store the rank of the running
2904 process. This improves performance by an order of magnitude.
2905 * C: New coccinelle script to automatically locate and modify global and
2906 local static variables.
2907 * Improved SMPI network model with a sender-side gap to account for multiple
2911 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
2912 only say if a communication is finished, no matter whether it succeeded or
2913 failed. You can call MSG_comm_get_status() to know the status of a finished
2915 * New function MSG_task_dsend() to send a task and detach it. When a
2916 communication is detached, you are never notified of its success or failure
2917 and the memory is released automatically once it is finished. This function
2918 is useful when you don't care about the end nor the success of a
2920 * Change the prototypes of action replay. Sorry for inconvenience,
2921 but this is really more efficient this way (and to adapt your code,
2922 you just have to fix the initialization, that shouldn't be too long)
2923 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
2924 ever managed to do anything useful with it.
2925 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
2926 takes a dynar of communications. It returns immediately and gives the
2927 index of a finished communication (if any).
2928 * New example: a basic implementation of the Chord P2P algorithm.
2931 * New model for multi-core CPUs. You can now use the core attribute to
2932 precise the number of cores of a host. This is a basic model. Every
2933 process running on the host receives at most the power provided in
2934 the DTD (throughput<=power). Total throughput of process cannot exceed
2936 * New peer tag. This peer tag creates a tiny AS comprising a host and a
2937 router linked by an up-link and a down-link (possibly asymmetrical).
2938 This kind of pattern allows to easily build last-mile model style platforms.
2939 Aggregating such patterns in a rule-based AS is thus the technique of
2940 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
2941 * New model for Vivaldi routing. We transformed the Vivaldi network model
2942 into a Vivaldi routing model (based on the rule-based model). This allows to
2943 combine Vivaldi based latencies with last-mile platforms.
2946 * Added a check for NaN of IEEE754 infinite in the double entries of
2948 * Introduce a new context factory "raw", highly inspirated from the
2949 ucontext factory, but using manually crafted functions in assembly to
2950 do the work in an efficient manner.
2951 * Allow to change the used context factory at run time, not only at
2952 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
2953 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
2954 contexts at runtime (only with raw contexts or ucontexts).
2955 * Completely rewrote this module to allow parallel execution of user
2956 processes. Use --cfg=contexts/nthreads:N to execute user processes
2957 with N parallel threads (the default is 1, meaning no parallelism).
2958 * Allow to decide dynamically between sequential and parallel modes.
2959 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
2960 processes in parallel only when their number is greater than or equal to P
2962 * Added a check for NaN of IEEE754 infinite in the double entries of
2966 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
2967 won't output the state of processes when interrupted with Ctrl-C
2968 * Add a new function xbt_dynar_to_array that transforms a dynar into a
2969 NULL-terminated array. This may solve backward compatibility issues
2970 due to the change to return type of SD_simulate. See also:
2971 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
2972 * Add new macros with variable number of arguments.
2973 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
2974 - in xbt/asserts.h: xbt_assert
2975 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
2976 - in xbt/ex.h: THROWF and RETHROWF.
2977 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
2979 * Change xbt_die() to accept a format string with arguments, just like printf.
2980 * New data structure: xbt_lib_t, like a dict but more general and with better
2984 * New configuration options
2985 Options triva/categorized and triva/uncategorized can be used to generate
2986 graph configuration files for Triva visualization tool.
2987 * Configuration option tracing/platform is renamed to tracing/categorized
2988 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
2989 * New TRACE_user_link_variable interface:
2990 User provides the name of the link and the tracing variable to attach to it
2991 * the declaration of tracing categories must be done after the environment
2993 * simpler tracing interface, just one way to declare categories
2994 TRACE_category or TRACE_category_with_color, it is up to you
2995 * links in the trace file are again identified by their names
2996 * trace contains the full platform hierarchy exactly as declared using the ASes
2997 * Options tracing/msg/[task|process]:1 groups the process by hosts
2998 for both cases, tasks and processes must have names that are unique during the simulation
2999 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
3000 * The experimental option tracing/msg/volume is deprecated
3001 its functionality may be reincorporated if needed
3003 The tracing generates a trace file with unordered timestamped events,
3004 because of the way the core simulator (surf) works. A script available
3005 at the tools directory (fix-paje-trace.sh) can be used to put the events
3006 in order. We have changed the tracing so it can generate ordered timestamped
3007 events in the final trace, but depending on the simulator (and how much time
3008 is simulated) that can lead to a huge memory utilization. It is deactivated
3009 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
3011 Build Infrastructure
3012 * Define a SIMGRID_VERSION macro in simgrid_config.h.
3013 - We are trying hard to keep the API stable, but it may happen that
3014 some things change (we're a research project after all, not a
3015 nuclear plant operating system). If such things should happen, you
3016 could rely on that macro to adapt.
3017 - current value: 30600 for 3.06.00, aka 3.6
3018 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
3019 a number that can be compared with SIMGRID_VERSION.
3020 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
3021 assertions and verbose/debug logging events are disabled at compile time.
3023 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
3025 SimGrid (3.5) stable; urgency=medium
3028 * New feature to any SimGrid-based simulator: Model-Checking
3029 Check SIN#1 for more details.
3032 * New Model SMPI (three-interval linear regression for correction factors)
3033 See RR-7426, available at http://hal.inria.fr/inria-00527150
3034 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
3035 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
3036 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
3037 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
3038 * See also src/smpi/README
3043 - Tracing API changes: TRACE_start and TRACE_end should not be called
3044 by user-code. They are automatically called by simulators created
3045 with SimDAG, MSG and SMPI if the toolkit is compiled with
3046 tracing_enabled=ON. Categories declaration and utilization remain the
3047 same for MSG and SimDag.
3048 - A function was added to the tracing API to declare categories with
3050 - TRACE_category_with_color (char *category, char *color)
3051 where color must be in the following format
3052 "%f %f %f", red, green, blue
3053 and red, green, blue are float values in the interval [0, 1]
3054 - User can specify NULL as color parameter, or continue calling
3055 TRACE_category (cat)
3056 On that case, the tracing system will define random colors
3057 - The following command-line options are supported:
3058 --cfg=tracing/filename:msg.trace
3059 --cfg=tracing:1 (activate tracing, needed to use others)
3060 --cfg=tracing/platform:1 (categorized resource use)
3061 --cfg=tracing/uncategorized:1 (uncategorized resource use)
3062 --cfg=tracing/msg/task:1 (task creation)
3063 --cfg=tracing/msg/process:1 (process creation, migration)
3064 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
3065 --cfg=tracing/smpi:1 (SMPI interface tracing)
3066 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
3067 - examples of examples/msg/tracing updated
3069 - DAXLoader and DOTLoader functions can generate tasks with categories
3070 - A new function to attribute a category to SD tasks:
3071 TRACE_sd_set_task_category (SD_task_t task, char *category)
3072 * Tracing the MPI interface implemented by SMPI
3073 - Collective operations are traced with states
3074 - Point-to-Point operations are traced with states/links
3075 - Tracing activated by a parameter "-trace filename" passed
3076 to smpirun during execution (considering that simgrid
3077 is compiled with tracing enabled)
3078 - To run the simulation with gdb, the simulator
3079 accepts --cfg=tracing/smpi:1 to trace SMPI
3080 - tesh files to check if smpi tracing is ok
3081 - See examples/smpi/NAS/DT-trace
3082 * GTNetS tracing re-worked
3083 - adaptation to the tracing system of GTNets to cope
3084 with modifications regarding the fullduplex mode
3085 - new tesh files to check if gtnets tracing is ok
3088 * Asynchronous communications through the functions:
3089 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
3090 * New function: MSG_load_platform_script()
3091 to make possible using a lua script instead of XML files to set up platforms
3092 * New function: MSG_set_function
3093 to associate functions to processes, used when bypassing the parser
3094 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
3096 Platforms: Add some more examples in examples/platforms
3097 * Grid'5000: see www.grid5000.fr
3098 * *_30000_hosts.xml: various huge files [mainly scalability testing]
3101 * Change the XML format. This is a very important modification. SimGrid
3102 3.5 introduces a new hierarchical format based on the notion of
3103 Autonomous Systems. Compatibility with old format is ensured
3104 through the perl script provided in the install bin directory
3105 bin/simgrid_update_xml.
3106 It is now possible to build platforms with specific routing
3107 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
3108 connect several platforms together. We will try to provide soon
3109 set of realistic platforms exploiting these properties (have a
3110 look at examples/platforms/ for the moment).
3111 * Take the opportunity of the XML format change to be a good XML citizen:
3112 rename link:ctn to link_ctn and similar changes (also dealt with by
3114 * Add a new routing scheme (rule-based) using regular expressions. It
3115 enables to have an extremely low memory footprint when the
3116 underlying routing is simple and can be compactly described. You
3117 need to have libpcre4-dev (perl regular expressions) installed if
3118 you want to use this routing scheme.
3119 * Revive the cluster TAG and allow to easily and efficiently (both in
3120 term of memory and speed) connect clusters together. Have a look
3121 at teshsuite/simdag/platforms/ to see how this can be done. With
3122 this tag, you can create clusters with thousands of tasks at no
3123 cost (have a look at examples/platforms/).
3124 Note: clusters are implemented as ASes, so there is no need for an
3125 enclosing AS tag if you have only one cluster in your platform.
3126 * Add new generic functions in the public interface that allows the user
3127 to call SURF 'create_resource' methods from your code (same
3128 functionality as the XML bypass mechanism but with a much lighter
3130 * Add a new model (enabled through command line --cfg=network/model:SMPI)
3131 that uses a piecewise linear approximation to produce better
3132 results when exchanging small messages.
3133 * Add a new parameter to handle correctly full duplex link and account
3134 for interferences between uplink and downlink communications
3135 (activate with --cfg=fullduplex:1).
3138 * Rename the SD_READY (all dependencies are satisfied and task is
3139 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
3140 dependencies are satisfied) state.
3141 This prevents a confusion between the notion of "ready to schedule"
3142 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
3143 simulated" (SD_RUNNABLE) used by the simulation kernel.
3144 * Change the way a task is considered as ready. Instead of removing
3145 dependencies when a task is done, a counter is decreased. This way,
3146 it is always possible to reach ancestors thanks to the
3147 SD_taks_get_parents function (even after the end of the simulation.)
3148 * Change the return type of SD_Simulate from (SD_task_t*) into
3149 xbt_dynar_t. This function was in handling a dynar internally and
3150 converted it into a NULL terminated array for historical reasons.
3151 * New function SD_dotload(char*) to load a DAG described in dot
3152 format. This loader and the corresponding examples require the
3153 installation of the graphviz library.
3154 * Fix a bug in the management of tasks of size 0 in the surf network
3155 models. This problem was only visible with SIMDAG and you should
3156 thus disregard results produced with earlier versions if you
3157 relied on this feature (some tasks were blocked because of this).
3158 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
3159 even though your applications were doing only point-to-point
3160 communications and sequential computations. Now you can really use any
3161 model you want (of course, if you create real parallel tasks, which are
3162 not implemented in most models beside ptaskL07, this will abort).
3163 * Add an example that schedules a DAX on an heterogeneous platform
3164 using a Min-Min strategy.
3165 * New function SD_workstation_get_current_task() that returns the kind
3166 of task currently running on a workstation in the sequential access
3168 * Raise some warnings when unexecuted tasks remains at the end of the
3169 simulation. This is usually caused by cycles in the DAG.
3172 * New function: SIMIX_process_set_function() called by MSG_set_function
3173 * Change the underlying waiting queue in semaphores so that a process
3174 can wait on several of them simultaneously (as in waitany).
3175 * Fix the way to handle tokens in semaphores so that all access patterns
3176 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
3177 * kill the dirty pimple SIMIX_message_sizes_output()
3178 Please use (proper) visualization instead
3181 * New data container: setset (set of sets of elements)
3182 * New module: mmalloc (mapped malloc, allowing to have several
3183 independent segments of malloc)
3184 * New function: xbt_dict_cursor_set_data()
3185 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
3186 * New function: xbt_dynar_is_empty()
3187 * New function: xbt_fifo_get_last_item()
3188 * Fix xbt_dynar_shrink(): use the right element size.
3189 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
3190 uninitialized areas during expand.
3191 * Fix semaphores: previous implementation was severely broken.
3192 * Use library init/fini functions for our initialization.
3193 - you can use logs and other feature as soon as you want in your
3194 code (even before the xbt_init / MSG_init)
3195 - xbt_exit is now a no-op and produce a warning when used.
3198 * Port GRAS to new SIMIX mechanisms. This allows gras users to
3199 benefit from the latest improvement to the simulation kernel.
3200 * Kill measurement sockets for now. If you rely on them, sorry. This
3201 release is not for you. This feature will be reintroduced in the
3202 future, but we cannot delay the release any further.
3203 * New function: gras_msgtype_get_name().
3204 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
3205 * Fix (at last) the pmm example: it should not randomly fail anymore.
3207 Build chain: bug fixes and overall polishing
3208 * Cmake is now stable enough. Hence, we killed the autotools.
3209 * Port to windows ( TM :)
3210 * Fix the 'make install' target.
3211 No need to use 'make install-simgrid' anymore
3212 * Introduce a 'make dist' target compiling a *source* archive
3213 'make package' compiles a binary archive
3214 * Compile java files only on need
3215 * Add --cd and --setenv command line options to tesh
3216 * Out of source builds are not fully supported yet, but we are close
3217 * Enable supernovae and optimization flags by default for our users
3220 * Add layer to set up environment directly from lua, without XML.
3221 * The effect of gras_stub_generator can be achieved through
3222 lua too (check examples/gras/console/ping_generator.lua)
3224 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
3226 SimGrid (3.4.1) stable; urgency=low
3228 The "Polishing easter eggs is probably a good idea" release.
3229 This is a bug fixes release only.
3233 * Fix a bug preventing the tasks from begin garbage collected.
3236 * Fix a bug occurring when a host involved in a communication fails.
3237 This was not detected properly by the other peer involved in the
3238 communication. Now, it's reported as a network error.
3241 * Warn the user about loop dependencies in data flow of DAX files
3242 * Obey the control-flow dependencies of DAX files
3245 * Add option "enable_smpi" allowing to not compile SMPI.
3246 Probably useful for the (Mac) users experiencing a build error here
3247 * Improve the detection of lua5.1 and ruby1.8
3249 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
3251 SimGrid (3.4) stable; urgency=low
3253 The "Easter in Cargese" release. Also known as (major changes):
3255 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
3256 ~> bindings were greatly improved
3257 ~> new tracing infrastructure for better visualization introduced
3259 * the "Welcome to configury modernity" release.
3260 ~> we switched from autotools to cmake, and improved our cdash
3263 A more detailled list of changes follow (full detail in svn log).
3265 Java Bindings: Various Cleanups
3266 * (install java-gcj-compat-dev on debian-like to use them)
3267 * Remove put/get: no need to export deprecated interface in Java
3268 Use send/receive instead.
3269 * Cleanup the examples and add a README per directory
3270 * Remove example autoDestination (that's the only way to go now)
3271 * Remove example explicitDestination (was a plain copy of basic)
3272 * Make JniException a runtime exception, so that there is no need to
3273 declare the fact that you may encounter such a beast. I guess that
3274 nobody will ever want to survive such error.
3275 * Create specific errors for each MSG case of failure:
3276 host failure, transfer failure, timeout, task cancelled
3277 * Cleanup the exceptions that may get thrown by each function
3278 * Other internal cleanups in Java bindings. Performance still bad :/
3279 Ruby and Lua Bindings: create them
3280 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
3281 * That's new and great, you should try them out.
3282 Same functionalities than Java bindings, only even less polished
3284 * Kill the useless "rate" argument of SD_task_get_execution_time()
3285 Everyone used to provide -1 as a value, it was not used, and the
3286 semantic of a possible use wasn't even clear.
3287 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
3288 either as comm costs or compute costs to mean that there is no
3289 such thing for that specific task.
3290 * Add a SD_task_set_name() function
3291 * Fix SD_task_unschedule() on typed tasks
3292 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
3293 * In DAX loader, accept useless 'level' attributes to <job> since
3294 LIGO DAGs have them (seem to be to ease graphical representation).
3296 * Add an example masterslave_mailbox.c using send/receive and not
3297 the deprecated put/get interface.
3298 * Kill the MSG_paje_output() function. It's a noop since 2 years.
3299 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
3301 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
3302 (declare MSG_USE_DEPRECATED to still have the old name)
3303 * Add a MSG_task_set_data() function
3304 * About trace replay (see examples/msg/actions):
3306 - Allow to work with splitted trace files for each process
3307 Give the specific trace file as argument of each process,
3308 and call MSG_action_trace_run(NULL)
3309 You can still have one merged file for all processes.
3310 - Fix implementation of collective operations
3311 * Allow task_execute() on 0-sized tasks (closes #10063)
3313 * This is the first release of SimGrid where SMPI is not considered
3314 beta anymore (even if some corners should still be improved)
3315 * Port over the new SIMIX_network submodule (internal refactoring)
3316 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
3317 * Implement more missing elements of the standard:
3319 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
3321 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
3322 MPI_Scan() MPI_Get_processor_name()
3323 - Added implementation of missing case for Alltoall (warning: it's
3324 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
3325 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
3326 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
3327 SMPI_MPI_Allgatherv()
3328 * Bug fixes include:
3329 - MPI_Waitsome() was broken
3330 - Allow relative includes in smpicc
3331 - Command line cfg argument 'reference_speed' was ignored...
3332 - Some functions did not properly lead to auto-benching of user code
3333 - smpicc passes -O2 by default (just like openmpi one)
3335 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
3336 * Bug fixes about timeouts during communications
3337 * add SIMIX_message_sizes_output() as a pimple to write to file the
3338 amount of messages per size. Use gnuplot to get histogram.
3339 Pimple because that's the only user-visible function of simix,
3340 defined directly in xbt.h (irk, sorry)
3342 - Add a SIMIX_sem_get_capacity() function
3343 - Fix interactions with processe resume/suspende
3344 - release_forever() was stupidly broken
3345 - Fix SIMIX_display_process_status() for processes in a semaphore
3346 - Make SIMIX_sem_block_onto() user-visible
3347 * Refactoring context stuff:
3348 - Use pseudo-OOP for better modularity
3349 - reimplement SIMIX_process_kill() without process_schedule() so
3350 that the latter can take as invariant that it is called from
3352 - Merge context_start into context_new for sake of simplicity
3354 * Add a Vivaldi network model, coded live during SUD'10 ;)
3355 * Rename configuration variables to start a hierarchy:
3356 o cpu_model -> cpu/model
3357 o network_model -> network/model
3358 o workstation_model -> workstation/model
3359 * New configuration variables:
3360 o network/bandwidth_factor: correction to bandwidth
3361 o network/latency_factor: correction to latency
3362 o netwotk/weight_S: correction to the weight of competing streams
3363 * Add a long description to the models, that users can see with such
3364 argument on the command line: --cfg=cpu/model:help
3365 * --help-models display the long description of all known models
3367 * config: add the ability to set a default value after registration
3368 Does not override any previously set value (e.g. from cmd line)
3369 * dict: allow to have integer key and data.
3370 When so, you need to use the following functions
3371 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
3372 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
3373 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
3374 In contrary to regular dicts, the key is not malloced before copy.
3375 Mixing scalar and regular elements in the same dict is not tested
3377 * Allow to use xbt_dynar_shrink() to expend the dynar instead
3378 Tracing for Visualization:
3379 * SimGrid is now instrumented in order to generate a trace file for
3380 visualization analysis: to use it, need to compile SimGrid with the
3381 "tracing" option enabled, and instrument the program using SimGrid with
3382 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
3383 (among other functions).
3384 * The instrumentation only traces the platform utilization for now
3385 * Documentation to use the tracing functions and how to analyze the
3386 traces with the Triva tool is written.
3387 * More information about: SimGrid FAQ (in the section Tracing Simulations
3390 * We moved to cmake as default build system. Autotools support will
3391 be dropped soon. Check the FAQ for more info about how to use it.
3392 * Greatly improved our cdash/ctest interactions
3393 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
3394 * Added memory checking tests with valgrind; lot of memleak fixing.
3395 This may be the first release of SimGrid with so few memory issues
3396 * Added code coverage tests.
3397 Our coverage is still improvable, but at least we see it on cdash.
3399 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
3401 SimGrid (3.3.4) stable; urgency=low
3403 The "Desktop Grid needs love too" release (also called Xmas release).
3405 Models improvements:
3406 * Major speedup in the maxmin system solving by using lazy evaluation
3407 Instead of solving completely the maxmin system at each iteration,
3408 only invalidate (and recompute) the modified parts.
3409 This new feature is enabled in default models but you can try to
3410 turn it on with "--cfg:maxmin-selective-update=1" for other models.
3411 * Cas01 IMproved as default CPU model
3412 This CPU model is the same Cas01 model, but it uses the
3413 maxmin-selective-update flag and a heap structure to manage
3414 actions on SURF kernel.
3415 It reduces the complexity to find the next action to finish and,
3416 consequently, it's faster than the old Cas01.
3417 This is the new default CPU model (Cas01).
3418 * Rename the old Cas01 model to Cas01_fullupdate
3419 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
3420 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
3421 * CpuTI (CPU Trace Integration)
3422 A new CPU model whose objective is simulate faster when using
3423 availability trace files.
3424 Instead of using a full featured, over engineered maxmin system for
3425 CPU modeling, this model does the pre-integration of traces files
3426 to calculate the amount of CPU power available, and so, executes
3427 faster than the old CPU models.
3428 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
3429 * Use LV08 as default network model since it gives better accuracy
3430 for small messages and shouldn't change things for big ones.
3431 Use --cfg=network_model:CM02 to get the previous behavior.
3434 ******************************************
3435 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
3436 ******************************************
3437 * The new CPU model may changes simulations!
3438 The point is that events occurring at the exact same timestamp
3439 are not scheduled in the same order with the old and new
3440 version. This may be enough to completely change the execution
3441 of simulations in some cases.
3442 * The new network model will change simulations!
3443 This new model is more realistic than the previous one, so you
3444 should consider redoing your old experiments with this model.
3445 Sorry for the inconvenience.
3448 * Introduce the supernovae compilation mode
3449 When compiled that way, the whole SimGrid (or almost) is put in a
3450 single compilation unit and compiled in one shoot.
3451 This is to help gcc which has difficulties to inline stuff from one
3453 The speedup seem to be above 15%, althrough more tests are needed on
3454 amd64 to confirm that gain.
3457 * Port of MSG's mailbox on top of SIMIX network
3458 The put/get mechanism was greatly simplified on the way.
3461 * New SIMIX network module. Provides:
3462 - Mailbox: rendez-vous mechanism to find with who you want to speak
3463 - Synchronous send/recv: easier and hopefully faster since the
3464 logic is handled in the maestro process directly now
3465 - Asynchronous send/recv: you dreamt of it? It's here now
3466 Too bad that nobody cared enough to propagate the change to MSG.
3467 * Add semaphores as SIMIX synchronization mechanism.
3470 * new function SD_daxload(char*) to load a DAX file
3471 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
3472 * Introduce typed tasks. Specify its kind and cost at creation.
3473 At scheduling, just give where it should be placed, and the cost
3474 for each involved resource is automatically computed.
3475 Existing constructors so far (more to come of course):
3476 - SD_task_create_comm_e2e() for end-to-end communication
3477 - SD_task_create_comp_seq() for sequential computation
3478 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
3479 * new function SD_task_dump() for debugging display
3480 * new function SD_task_dotty(task,FILE*) writing to file the info
3481 about the task in dotty format
3482 * SD_task_dependency_exists() can now cope with having one of its
3483 arguments NULL. If so, it tests whether the other argument has any
3485 * Add getters on list of preceding/following tasks:
3486 SD_task_get_parents(task) and SD_task_get_children(task)
3487 * Add getters on amount of workstations and list:
3488 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
3489 * Add getter on task kind: SD_task_get_kind(task)
3490 * Update the start_time and finish_time of tasks on completion/failure
3491 * Bugfix: Remove task from state swags when destroyed
3494 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
3497 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
3498 dynar with one separate thread per value of the dynar.
3499 * Change the prototype of xbt_thread_create(), sorry.
3500 Added a boolean parameter indicating whether we want to join this
3501 thread (used in SG only for now)
3502 * Implement xbt_thread_join and xbt_thread_yield in SG also.
3505 * GTNetS wrappers should now be usable again (and betterly tested too)
3506 * Fix a major regression from 3.2 where the timeout provided to
3507 MSG_task_put_with_timeout() was used as absolute time before which
3508 the comm should be done.
3509 * Start to fix the <cluster> tag.
3510 - Internal links should be good now (beside of the loopback, which
3511 use the private link instead)
3512 - paths to the external world is still rather broken
3513 - the <route:multi> tag is just broken. Actually that's brain-dead.
3514 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
3515 to make it less stupid
3516 ** Check your platform with teshsuite/simdag/platforms/flatifier **
3517 * Fix a source-level compatibility glitch from 3.2: after defining
3518 MSG_USE_DEPRECATED, you can use the old name
3519 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
3520 * Allow to compile from the SVN with automake 1.11
3521 * Fix some problems when using the "start_time" tag in deployment XMLs.
3522 * Fix #8569: XBT/synchro.h has redundant declarations
3523 * Fix #8563: MSG return values and exceptions
3524 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
3525 * Integrate patch #8636: Obey DESTDIR when installing documentation.
3526 Thanks to Robson Peixoto.
3527 * Fix a vicious bug in dictionaries inducing that some elements were
3528 not freed on xbt_dict_free()
3530 Portability report of this version:
3531 * Main portability targets:
3532 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
3533 on (amd64/i386/ia64)
3534 - mac leopard on i386
3535 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
3536 but nothing critical.
3537 * Other platforms: windows, AIX and others were not tested for this release
3539 Timing report of this version:
3540 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
3541 scenario parameters). From 8h to a few seconds in desktop grid settings.
3542 * Supernovae brings about 25% speedup on i386.
3544 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
3546 SimGrid (3.3.3) stable; urgency=low
3548 The "Need for Speed" release.
3550 The timings done to validate the 3.3.2 were faulty.
3551 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
3553 The problem was a conversion from a manually handled vector to
3554 xbt_dynar_t on the critical path.
3555 xbt_dynar_foreach calls functions, inducing stack management crap.
3557 We inlined these functions and xbt_dynar_foreach is now breath taking.
3558 We also inlined xbt_swag_belong on the way.
3560 Here are some approximate speedup measurements (on master/slaves
3561 simulations lasting between 10s and 20s each):
3562 3.3.1 -> 3.3.2: about same performance
3563 3.3.2 -> 3.3.3: 40% speedup
3564 3.3.1 -> 3.3.3: 40% speedup
3565 3.3.1 with inline patch -> 3.3.3: 30% speedup
3567 Our reading is that the refactoring which occurred in 3.3.2 made us
3568 suffer much more from the xbt_dynar_foreach low performance, but
3569 once we solved this, this refactoring proved to be very performance
3570 effective. From the 40% speedup, somehow, 10% are due to the
3571 inlining and 30% to the refactoring.
3573 That's a pitty that gcc cannot inline functions placed in other files
3574 alone. We have to choose between:
3575 - break the encapsulation (by putting private data structures and
3576 accessors in headers files to help gcc)
3577 - live with low performance
3578 - switch to a decent compiler such as icc (not quite possible).
3580 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
3582 SimGrid (3.3.2) stable; urgency=low
3584 The "Simplicity does not preceed complexity, but follows it" release.
3586 The main contributors of this release were (lexical order):
3587 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
3590 * Extract the routing logic into its own object.
3591 (was dupplicated in network.c and workstation_LV07.c;
3592 Allows to implement other ways of storing that info)
3593 => kill now useless network_card concept
3594 - Use dynar to represent routes (instead of void** + int*)
3595 - kill link_set (use surf_network_model->resource_set instead)
3596 - Add a command-line option to choose the routing schema to use
3597 - Add three new models:
3598 * Floyd (shortest path computed at initialization)
3599 * Dijikstra (shortest path recomputed all the time)
3600 * Cached Dijikstra (shortest path computed on need)
3601 All these models where contributed by Silas De Munck, and are
3602 described in his ICCS09 paper.
3604 * Simplify model declaration
3605 (less redirections, less function to write when defining a model)
3606 - Factorize stuff between models:
3609 surf_model_resource_set(model)
3610 surf_model_resource_by_name(model, name)
3611 - Unify the types of models in s_surf_model_t (using an union)
3612 - Embeed fields of common_public directly into s_surf_model_t
3613 - Rename model methods:
3614 action_free ~> action_unref
3615 action_change_state ~> action_state_set
3616 action_get_state ~> action_state_get
3617 - Change model methods into functions:
3618 (model)->common_public->action_use ~> surf_action_ref
3620 * Implement a generic resource; use it as ancestor to specific ones
3621 (allows to kill duplicated code in models)
3622 Drawback: timer command don't need no name nor properties;
3623 workstation_CLM03 don't need no properties
3624 (but I guess we can live with those few bytes wasted)
3626 * Improve the action object model
3627 - implement a constructor avoiding dupplicated code about field
3628 initialization in generic_action part.
3630 * Kill the SDP model: it has an external dependency, is deprecated
3631 in flavor of modern lmm models, and didn't compile since a while
3634 * Relocation of the context module from XBT to SIMIX.
3635 (the context were decoupled from the simix processes, duplicating a lot of code)
3636 => a lot of code was factorized
3637 - less overhead is introduced during scheduling
3638 - simpler API for the context factory
3639 - the logic for process creation,destruction and manipulation was simplified
3640 * Simplification of the s_smx_process_t data structure.
3641 => accesing the simix level data associated to a process is faster now,
3642 and the code is a lot more readable.
3645 * Implement some more MPI primitives:
3646 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
3647 -implementation: Bcast: flat or 2-ary tree (default),
3648 Barrier: 4-ary tree,
3650 Allreduce: Reduce then Bcast
3651 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
3652 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
3653 Alltoallv: flat tree, like ompi
3655 * Add support for optimized collectives (Bcast is now binomial by default)
3656 * Port smpirun and smpicc to OS X
3659 * Kill SD_link_get_properties: hard to maintain and makes very little sense
3660 Shout out if you used it.
3663 * Display the list of still queued messages in SG mode when existing
3667 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
3668 * Add xbt_graph_node_get_outedges() [Silas De Munck]
3669 * Add xbt_str_from_file(FILE*)
3670 * Add xbt_dict_get_key achieving a linear reverse search
3671 * Remove the context module
3673 Portability report of this version:
3674 * Main portability targets:
3675 - Linux(debian)/x86/context
3676 - Linux(debian)/x86/pthreads
3677 - Linux(debian)/amd64/context
3678 - Linux(debian)/amd64/pthreads
3679 On these, we still have the eratic breakages of gras/pmm and
3680 amok/saturate_sg reported in previous version. We still think
3681 that the tests are the cause of the fault, not the tested code.
3683 - Mac OSX Leopard/x86/context
3684 Still false negative in tesh autotesting.
3685 Smpi still fails, but this time because readlink does not accept -f
3686 Everything seems to work properly beside of that.
3689 - AIX version 5.3 (only tested contexts this time)
3690 Smpi still fails there because mktemp is not installed.
3691 Everything seems to work properly beside of that.
3693 I managed to compile it for the first time, but several breakages.
3694 Won't delay the release for this exotic platform.
3696 * Windows: it's still lagging behind. If you want to help, please
3699 Timing report of this version:
3700 This version seem to be more than 5% faster than 3.3.1 (on linux
3701 64bits with contexts). The gain is less than expected, we are
3702 investigating this for next release.
3704 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
3706 SimGrid (3.3.1) stable; urgency=low
3709 * Implement a --cfg-help to show existing configuration variables
3710 * Build chain do not require doxygen in maintainer mode
3713 * fix a bug on struct sizeof computation, which prevented the
3714 exchange of arrays of structs in some conditions
3715 - added a regression test about this in datadesc_usage
3716 * Allow the exchange of 0-long dynamic vectors.
3717 - for that, use -1 as indicator of dynamic size instead of 0
3718 - This implied to change any size from unsigned long to long,
3719 reducing a bit communication abilities, but I guess that with
3720 64bits being quite common, this is more than enough.
3721 - This also induce a protocol change, thus bumping network protocol
3722 version from 0 to 1 (if we have external users, we have to get
3723 clean on that point too ;)
3724 - added two regression tests about this in datadesc_usage
3725 * Be more verbose when propagating local exceptions
3726 This helps debugging.
3727 * Display the status of simulated processes when receiving SIGINT in
3731 * Allow to control the simulation from a trace file.
3732 New functions MSG_action_register() and MSG_action_trace_run()
3733 The first one allows to associate a function execution to each
3734 kind of action while the second one parses a trace file and
3735 triggers the corresponding actions within the system.
3736 For now, only a toy example is provided in examples/msg/actions
3737 * Add an example of process migration in examples/msg/migration
3738 * Fix a bug in task exchange which broke MSG_task_get_sender()
3739 Add a teshsuite regression test for that.
3740 [Bug: if MSG_task_get_sender() is called after sender exit,
3742 * Fix a bug which prevented suspend/resume to work properly
3743 * Display the status of simulated processes when receiving SIGINT
3744 This fixes a regression of v3.3. due to the introduction of SIMIX
3745 * Bug fixing in failure management:
3746 - trace could not start by a failure at time 0
3747 - failure during communications were not working
3750 * Add SIMIX_process_set_name() to change the name of the current
3751 process in the log messages.
3752 * Store smx_hosts in a dict since we only retrieve them by name
3753 * Move the configuration infrastructure to surf
3756 * Move the configuration infrastructure to surf
3759 * Massive internal cleanups:
3760 - Store internal structures on processes instead of hosts (allows
3761 to have more than one process per host, in addition of being more
3763 - Cleanup the initialization/finalization process
3764 - Kill a whole bunch of unneeded synchronization:
3765 processes run in exclusive manner within the simulator
3766 - Move queues from global tables to process data fields
3768 - now accept -platform and -hostfile arguments
3769 - Pass the right rank value to processes according to the hostfile
3770 * Compile the examples by default, and use them as regression tests
3771 * Implement MPI_Wtime()
3772 * Change the reference speed to a command line option
3775 * TCP_gamma can now be specified as command line option using
3776 --cfg=TCP_gamma:10000000.0
3777 * Change the --surf-path cmd line option into --cfg=path:
3780 * Also include strbuff from xbt.h public header
3781 * xbt_ex_display(): do not free the exception after displaying
3782 This allows to do more with the given exception afterward.
3783 Users should call xbt_ex_free() themselves.
3787 Portability report of this version:
3788 * Main portability targets:
3789 - Linux(debian)/x86/context
3790 - Linux(debian)/x86/pthreads
3791 - Linux(debian)/amd64/context
3792 - Linux(debian)/amd64/pthreads
3793 These targets fail about 1/10 of times on gras/pmm, but we believe
3794 that this is because of the test, not because of SimGrid.
3795 amok/saturate_sg fails even more rarely, and the test may not be
3798 - Mac OSX Leopard/x86/context
3799 The test suite still spits tons of errors because some obscure
3800 force prevents us from removing the temporary directories
3801 arguing that they still contain some metadata I've never heard of.
3802 Smpi fails because seq is not installed.
3803 Everything seems to work properly beside of that.
3806 - AIX version 5.3 (both contexts and pthread)
3807 Smpi still fails there because mktemp is not installed.
3808 XML inclusions seems rosty on AIX.
3810 * Windows: it's still lagging behind. If you want to help, please
3813 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
3815 SimGrid (3.3) stable; urgency=high
3819 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
3820 [Malek Cherier & Mt]
3822 * Introduce the SIMIX module: factorize code between MSG and GRAS.
3825 Until now, GRAS were using MSG as an interface to SURF. It was
3826 quite difficult because both interface have several differences
3827 (MSG channels vs GRAS sockets were the most notable point).
3829 This also opens the gate to SMPI (which should occur soon) and speed
3830 up simulations by to 40% (even if it were not the main goal).
3832 **************************************
3833 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
3834 **************************************
3835 The point is that events occurring at the exact same timestamp are
3836 not scheduled in the same order with the old and new version. This
3837 may be enough to completely change the execution of simulations in
3838 some cases. Sorry for the inconvenience.
3840 * Cleanup and upgrade the XML format to push further scalability
3841 issues (check http://hal.inria.fr/inria-00256883/ for more info)
3843 * Improve the testing infrastructure with tesh. Now a very large part of
3844 the code is tested not only by being run but also by checking that the
3845 output match an expected output [Mt].
3847 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
3848 is really less memory-demanding, which should allow you to use
3849 larger files in SimGrid [AL].
3851 * Inform valgrind about our contexts, so that it becomes usable
3852 with the default (and more effecient) version of SimGrid
3853 [contributed by Sékou Diakite, many thanks]
3856 * Introduce a listener thread in charge of receiving incoming
3857 messages from the network. It allows to overlap communication and
3858 computation but most notably, it removes some stupid deadlocks due
3859 to the fact that so far, a process could not send and receive at
3860 the same time. This made most non trivial communication schema
3862 * Convert the PIDs from long int to int to match the MSG ones (and
3863 linux ones too) [Mt]
3864 * New function: gras_agent_spawn() to launch a new process on
3865 current host. Only working in simulation for now. [Mt]
3866 * New function: gras_os_hostport() returning a constant form (ie,
3867 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
3870 * Make the backtrace of exceptions more human readable [Mt]
3871 * New module: xbt/str [Mt]
3872 a ton of string utility functions (split, join, printf to a newly
3873 allocated buffer, trim, etc)
3874 * New module: xbt/hash [Mt]
3875 SHA1 hashing algorithm (more to come if needed)
3876 * New module: xbt/synchro [Mt]
3877 synchronization tools (mutex and conditions) working the same way
3878 in simulation and in real life (mainly useful for GRAS, but not
3880 * New module: xbt/queue [Mt]
3881 classical producer/consumer synchronization scheme
3882 * xbt_dynar_new_sync() creates a synchronized dynar. All access
3883 (using the classical functions will get serialized) [Mt]
3884 * Make dictionary internal table dynamic. No need to specify its size
3885 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
3887 * Make sure the log channels are organized as a tree under windows
3888 (because of ANSI C compatibility issue, any channel were child of
3889 root directly) [Mt].
3892 * Cleaned many thing in surf and fixed a few bugs [AL].
3893 * Add a nice command line configuration mechanism to compose models [AL].
3894 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
3895 the previous one (KCCFLN05). It relies on something that looks like
3896 a max-min sharing mechanism but cannot be written as such. A new solver
3897 was thus designed [AL].
3898 * Add a new solver to lmm. Based on Lagrange optimization and
3899 gradient-based descent, it enables to efficiently maximise systems s.a
3901 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
3903 This solver enables to propose two new network models for TCP Reno and
3904 TCP Vegas based on Low's work. These models still need to be fully
3905 tested though [Pedro Velho].
3908 * Bug fix in SD_simulate. Now the time bound given as argument is
3910 * Use the new parallel task model (ptask_L07) as default.
3911 * Use the SURF command line configuration mechanism.
3912 * 0-size tasks (for synchronization) should now work.
3914 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
3916 SimGrid (3.2) stable; urgency=high
3920 We still experience issues on this platform, but we believe that at
3921 least MSG is usable.
3923 GRAS API BREAKAGE (for simplification purpose, sorry):
3924 * the gras_msgtype_by_name is not used anymore. Instead of
3925 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
3926 you can write (and must)
3927 gras_msg_send(toserver, "request", &request);
3928 - If you still want to pass a gras_msgtype_t to the function (to cache
3929 the type and avoid the lookup time), use the gras_msg_send_() variant.
3930 - Impacted functions:
3931 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
3932 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
3933 * The callbacks are now expected to return 0 when everything went well
3934 (just like the main() function)
3936 GRAS new features and improvements:
3937 * New module mechanism where user code can use per process globals [Mt]
3938 This is similar to gras_userdata_*() functions, but for libraries. It
3939 factorize some code developped over and over in the examples and AMOK.
3940 It has still to be documented and used (only amok/peermanagement is
3942 * Fix a vicious bug in the TCP buffering mechanism which leaded to message
3943 loss when they were small enough to fit into the buffer and sent quickly
3944 enough so that they can all get received in one shoot.
3945 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
3946 if not found. Use the *_or_null() variant for the old semantic.
3947 * In gras_msg_handle, do not discard messages without callback.
3948 They are probably messages to be explicitly awaited later (ie, proofs of
3949 mis-synchronization in userland since they are sent before being awaited)
3950 No big deal usually.
3951 * gras_socket_meas_send/recv: semantic changed!
3952 The numerical arguments used to be (1) the total amount of data to send
3953 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
3954 messages. This was need for the fool willing to send more than MAXINT
3955 bytes on quite fat pipes.
3958 * Do really rename the hostmanagement module to peermanagement. [Mt]
3959 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
3960 but this is rather new and this was documented in the module
3961 documentation (poor excuses, I admit)
3962 * Bandwidth measurement semantic changed! This follows the changes to
3963 gras_socket_meas_send/recv explained above.
3966 * A sequential mode has been added to the workstations. When a workstation
3967 is in sequential mode, it can execute only one task, and the other tasks
3968 are waiting in a FIFO. [Christophe Thiery]
3971 * The KCCFLN05 workstation model now handles parallel tasks. It is the
3972 model for SIMDAG. [Christophe Thiery]
3973 * Bug fix in the maxmin solver: Some values were close to 0 instead of
3974 equal to 0, which caused some bad behaviors in
3975 saturated_constraint_set_update. I now use a threshold mechanism like in
3979 * When running manually src/testall, you select specific units [Mt]
3980 testall is the result of our cunit mechanism, and should replace all
3981 the scripty thingy around since bash don't run easily on billware.
3983 * A mallocator system has been added. [Christophe Thiery]
3984 Mallocators allow you to recycle your unused objects instead of freeing them
3985 and allocating new ones.
3987 Documentation update:
3988 * FAQ reworking + New FAQs:
3989 - "Valgrind spits tons of errors!" [Mt]
3990 - "How to repport bugs" [Mt]
3991 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
3992 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
3993 - Communication time measurement within MSG [AL]
3994 - I experience weird communication times when I change the latency [AL]
3995 * GRAS tutorial [Mt]
3997 - an introduction to the framework and to the used communication model
3998 - an initiatic tour introducing the most proheminent features:
4000 . Lesson 0: Installing GRAS
4001 . Lesson 1: Setting up your own project
4002 o Part 2: Message passing
4003 . Lesson 2: Exchanging simple messages
4004 . Lesson 3: Passing arguments to the processes (in SG)
4005 . Lesson 4: Attaching callbacks to messages
4006 . Lesson 5: Using globals in processes
4007 . Lesson 6: Logging information properly
4008 . Lesson 7: Using internal timers
4009 . Lesson 8: Handling errors through exceptions
4010 . Lesson 9: Exchanging simple data
4011 . Lesson 10: Remote Procedure Calling (RPC)
4012 . Lesson 11: Explicitly waiting for messages
4013 . Recapping of message passing features in GRAS
4014 - A HOWTO section containing:
4015 o HOWTO design a GRAS application
4016 More are due, of course. They will come latter. In the meanwhile, you can
4017 check the examples which are still here.
4019 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
4021 SimGrid (3.1) stable; urgency=high
4025 There was a stack corruption somewhere, visible only when optimizing
4026 with these versions. [Vince]
4029 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
4030 module that enabled to play with Directed Acyclic Graphs. It is built
4031 directly on top of SURF and provides an API rather close to the old
4032 SG. Some old codes using SG are currently under rewrite to check that
4033 all needful functions are provided. [Christophe Thiery]
4036 * Complete rewrite of the KCCFLN05 workstation model. It is now an
4037 extension of the classical CLM03 model that gracefully handles
4038 failures. This is now the default model for MSG and GRAS. It doesn't
4039 handle parallel tasks yet though. [AL]
4040 * Bug fix: Weights were not correctly set in the network part.
4041 WARNING: This may have resulted in incorrect results with simulations
4042 where there are more than one flow on a given link. [AL]
4045 * After a (long ?) discussion on simgrid-devel, we have decided that the
4046 convention we had on units was stupid. That is why it has been decided
4047 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
4048 WARNING: This means that all previous platform files will not work as
4049 such with this version! A warning is issued to ask users to update
4051 A conversion script can be found in the contrib module of the CVS, under
4052 the name contrib/platform_generation/surfxml_update.pl [MQ]
4055 * Bug fix: Processes were started in reverse order, wrt deployment file.
4056 WARNING: if your code relies on this bug, please fix it. [AL]
4057 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
4058 being executed on two different locations. [AL]
4059 * Bug fix: Failures are now better supported thanks to Derrick's tests
4060 (there was many failure situations I hadn't thought of and that weren't
4061 correctly handled). [AL]
4062 * New function: MSG_host_is_avail indicates you whether a given m_host_t
4066 * New! a real RPC mechanism, as it ought to be since too long. [MQ]
4067 Exception occurring on server-side are propagated back to client (!).
4069 API CHANGE: the callback changed their prototype. Change:
4070 int my_handler(gras_socket_t expeditor, void *payload_data) {
4072 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
4073 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
4075 * New! function: gras_msg_handleall to deal with all messages arriving
4076 within a given period.
4077 * New! function: gras_socket_server_range to get a server socket in a
4078 range of port numbers (ease to avoid port number conflicts) [MQ]
4079 * New! gras processes display their backtrace when they get a SIGUSR1
4080 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
4081 Sweet to debug RL processes [MQ]
4085 - Do not force experiment sizes to be expressed in kb, or it becomes
4086 impossible to measure the latency this way (needs one byte-long tests)
4087 WARNING: this changes the amok_bw_* function semantic. [MQ]
4088 - Implements the link saturation stuff. [MQ]
4089 * Peer management module:
4090 New! module factorizing code that we wrote over and over [MQ].
4093 * New module: cunit (my jUnit implementation in ansi C) [MQ]
4094 - Test units are placed directly into the library code, they get extracted
4095 automatically and placed into the src/testall binary.
4096 - Convert most of the XBT tests to this system.
4097 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
4098 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
4099 live in the same C code. This required to change a little bit the API
4100 of surfxml parsing but shouldn't be an issue for end-users. [AL]
4101 * New module: sparse graph structure with basic algorithms (this is work
4102 in progress and the API is not considered to be frozen yet). [AL]
4103 * Display more information on backtraces: source line & function names are
4104 now displayed just like valgrind does (rely on addr2line tool) [MQ]
4105 * New function: xbt_backtrace_display(). Sweet while debugging [MQ]
4106 * Reworked a little bit some #include statements to load only required
4107 headers. Some user code that relied on SimGrid to include stdlib or
4108 stdio may need to include it by themselves. [AL]
4109 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
4111 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
4112 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
4113 but I guess that almost nobody used those parts. [MQ]
4115 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
4117 SimGrid (3.0.1) stable; urgency=low
4120 * Unfortunately, I had missed 5 misnamed functions:
4121 xbt_fifo_item_t xbt_fifo_newitem(void);
4122 void xbt_fifo_freeitem(xbt_fifo_item_t);
4123 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
4124 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
4125 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
4126 They're now deprecated. Please use their new versions:
4127 xbt_fifo_item_t xbt_fifo_new_item(void);
4128 void xbt_fifo_free_item(xbt_fifo_item_t);
4129 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
4130 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
4131 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
4133 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
4134 * Documentation: xbt_log module unmercifully reworked [MQ]
4135 * Bugfix: there was a problem with the ending of contexts with
4136 the pthread backend. It caused some weird deadlock or behavior
4137 depending on the pthread implementation. [AL]
4138 * Bugfix: get the exceptions raised in the simulator repport where
4139 and why they come from when they are not caught in time [AL, MQ]
4142 * Bugfix: Do repport the error when two non-connected hosts try to
4143 exchange data (Thanks to Flavien for stumbling into this one) [AL]
4146 * Add additionnal checkings on communications. Assert that two
4147 communicating hosts are connected by a set of links... [AL]
4150 * Add additionnal checkings on channel values in communication [AL]
4151 * New: MSG_task_get_source to see on which host a task was generated [HC]
4152 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
4153 the number of tasks waiting to be received on channel and sent
4155 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
4156 waits for the first task coming from a given host.. [AL]
4158 GRAS new functionnalities: [MQ]
4159 * Enhance the parsing macro to allow the size of multidimentional objects
4160 to be given thru annotations.
4161 * New example (and documentation): Matrix Multiplication a la RPC
4162 (as when I was young!) and fix a bunch of bugs found on the way.
4164 GRAS performance improvements: [MQ]
4166 * Reduce the amount of cbps creation/destruction by making it static to
4167 datadesc_send/recv() and using a (newly created) cbps_reset (based on
4170 * Change libdata to a set so that we can search for stuff by ID (and thus
4171 reduce the insane amount of dict lookups)
4174 * Actually implement gras_datadesc_copy() so that we don't have to mimick
4175 RL communication on top of SG since it's so uneffective.
4176 It may also be used for inter-thread communication in RL, one day.
4177 * Use gras_datadesc_copy() to exchange messages on top of SG
4179 - improve message exchange performance on top of SG
4180 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
4181 * Don't exchange on the network the size of the used part of buffer,
4182 instead, specify the possible buffer size to read().
4184 - reduces the amount of read/write calls (one pair per exchange)
4185 - reduces the amount of exchanged data (the size)
4186 - allows to retrieve all arrived data on receiver side, if we don't need
4187 it right now (subsequent read will peek the buffer)
4188 - allows the receiver to proceed with the beginning of the stream before
4189 everything is arrived
4190 - make it possible to build an iov transport (using readv/writev)
4192 - take care of the data with non-stable storage (like stacked data),
4194 * If possible, TCP send uses vector I/O (when writev() is here)
4195 - Don't use it for receive since we send data sizes and data on the
4196 same stream, so we wouldn't be able to chain large amount of chunks
4197 before having to flush the stuff to read the size.
4198 * Rework the transport plugin mechanism to simplify it and reduce the
4199 amount of pointer dereferencement when searching for the right function
4202 * I guess that now, we do almost as few system calls as possible while
4203 doing as few data copy as possible.
4205 To improve it further, we could try to send all the sizes first and then
4206 all the data (to use iov on receiving size), but it's only a partial
4207 solution: when you have 2 dimensional data, the sizes of the second
4208 dimension is data of the first dimension, so you need 3 streams.
4210 I'm not sure the potential performance gains justify the coding burden.
4212 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
4214 SimGrid (3.00) stable; urgency=high
4217 * New! Give the possibility to hijack the surf parser and thus bypass
4218 MSG_create_environment and MSG_launch_application. Have a look at
4219 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
4221 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
4223 SimGrid (2.96) unstable; urgency=low
4228 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
4229 This deprecates the xbt_error_t mechanisms.
4230 It modifies (simplifies) all XBT and GRAS API.
4231 MSG API keeps unchanged (exceptions raised by XBT are caught from
4232 within MSG and masked with existing error handling facilities)
4235 * New! Add a FATPIPE model. [AL]
4236 * New! Add a parallel task model. [AL]
4237 * New! Add automatically a loopback interface (in the default
4238 network model) if none was precised.
4241 * Bugfix: MSG_process_resume now works with the current running process.
4243 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
4244 * Modification of MSG_task_get_compute_duration. Once a task has been
4245 processed, the value returned by this function is now equal to 0. [AL]
4246 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
4247 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
4248 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
4249 of a m_task. For now, MSG_task_cancel only works with computation
4251 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
4252 of the processor (in Mflop/s) regardless of the current load on the
4254 * API Change: use proper naming convention for MSG_getClock and
4255 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
4257 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
4258 This function changes the priority of a computation task. This priority
4259 doesn't affect the transfer rate. A priority of 2 will make a task
4260 receive two times more cpu power than the other ones. This function
4261 has been added to suit the needs of Nguyen The Loc and hasn't been that
4262 much tested yet. So if it fails, please report it and send me your code.
4264 * API Change: removed all functions and types that were marked "deprecated"
4265 since many months. Renamed MSG_global_init_args to MSG_global_init.
4267 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
4269 SimGrid (2.95) unstable; urgency=low
4272 * Steal some nice code to GNU pth to fix context detection and usage [AL]
4273 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
4274 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
4277 * Bugfix: Allow absolute paths for platform description files [MQ]
4278 * Bugfix: do free the variables after use. Leads to drastic performance
4280 * Implement max_duration (ie, timeouts) on resources [AL]
4283 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
4285 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
4286 the needed support (timeouts) [AL]
4289 * Implement measurement sockets. You can now get the bandwidth between two
4290 hosts thanks to AMOK (see below). [MQ]
4291 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
4292 dynar over the network (yeah) [MQ]
4293 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
4294 * simple/static token-ring example. [Alexandre Colucci and MQ]
4295 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
4296 in place before [MQ]
4299 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
4300 type parsing. "short" and "long" modifiers were also ignored; other
4301 modifier (such as reference level) are still ignored. [MQ]
4302 * Embeed the buffer size within the buffer itself on SG. [MQ]
4303 That way, send() are atomic and cannot get intermixed anymore (at least
4304 the ones which are less than 100k; bigger messages still have the issue)
4305 * Array size pushed by the field, not by the field type (or each
4306 and every long int will push stuff to the cbps) [MQ]
4307 * use select() to sleep since it allows to portably sleep less than one
4310 GRAS (minor cleanups)
4311 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
4314 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
4315 * type category 'ignored' killed as it was never used and were difficult
4317 * whether a type can cycle or not is now a flag, leaving room for more
4318 flags (as "ignored", if we feel the need one day ;)
4319 * Rename raw sockets to measurement sockets since "raw" has another
4320 meaning in networking community.
4323 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
4324 and offers features not belonging to GRAS but that most applications
4325 need. One day, it may be a set of plugins loadable at runtime.
4326 * New module: bandwidth
4327 bandwidth measurement between arbitrary nodes running this module. [MQ]
4329 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
4331 SimGrid (2.94) unstable; urgency=low
4333 The first beta release of SimGrid 3 !
4337 * Update the main page and the FAQ. Adding references to gforge.
4340 * Add a gras_os_getpid function.
4343 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
4344 * Extend the logs so that they also print PID, hostname, date, ... if
4346 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
4347 and kill the old version which were in testsuite/
4348 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
4352 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
4353 for users. Instead, each programming environment (GRAS, MSG,...) use it
4354 when needed to provide such a feature to users.
4355 Don't shortcut the mechanism or you will also shortcut the virtualization
4356 you need on the simulator.
4360 * Cleanups in configury with regard to compile optimization/warning flags.
4361 Also add -fno-loop-optimize to any powerpc since it's the optimization
4362 killing gcc (< 3.4.0).
4363 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
4364 needed by MSG examples complications
4365 * Borrow configury beautifications from PHP
4368 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
4369 warning (thanks loris for stumbling into this one).
4370 * Bugfix: stop loading private headers (gras_config.h) from the public
4374 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
4375 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
4376 RL would imply a DNS resolver, which is *hard* to do in a portable way
4377 (and therefore delayed).
4378 * Implement a real timer mechanism and use it in timing macros. This allows
4379 to avoid rounding errors and get a 0.000005 sec precision in timing
4380 macros. While I was at it, various cleanups:
4381 - allow to declare more than one timed section per file (fix a stupid bug)
4382 - move some private declaration to the right place
4383 - merge conditional execution and timing macros into emulation module
4384 - document the module
4385 - make sure the module cleanups its mess on gras_exit
4386 * Documentation improvements:
4387 - (new) how to compile applications using GRAS
4388 - (new) emulation support (timing macros)
4390 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
4392 SimGrid (2.93) unstable; urgency=low
4394 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
4397 - Use Paje properly where used. Still to be sanitized properly.
4398 - Portability fix: Add an implementation of the contexts using pthread
4402 - Add xbt_procname(): returns the name of the current process.
4403 Use it to show the current process's name in all logging.
4405 - fix detection of older flex version and the reaction, since we do
4406 depend on modern ones (we use lex_destroy)
4407 - Better separation of SG and RL in the libs: remove all simulation code
4408 from libgras. As a result, this lib is now only 200k when stripped.
4409 Some of the xbt modules may also be duplicated (two sets and such) and
4410 should be cleaned/killed before SG3.
4411 - Insist on using xlC on AIX because of weird problems involving gcc there.
4412 - Cleanup the make remote stuff. This is now done by scripts
4413 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
4414 mainly for our private use, but we're working on changing them to user
4417 - Bugfix: flush the socket on close only if there is some *output*.
4418 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
4420 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
4423 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
4425 SimGrid (2.92) unstable; urgency=low
4427 Alpha 3 on the path to SimGrid 3
4431 - New! First try of benchmarking macros.
4432 - New! First try so that gras_stub_generator generate deployment and
4433 remote compilation helpers.
4435 - Bugfix: Initialization fix in msg_test.
4439 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
4441 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
4443 - API Change: gras_os_sleep to take the amount of seconds as a double.
4444 Accepting an int was error prone since it was the only location where
4445 seconds were coded as such. It leaded to damn rounding errors.
4446 - Bugfix: Hard to belive that timers ever worked before this.
4448 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
4450 SimGrid (2.91) unstable; urgency=low
4452 Alpha 2 on the path to SimGrid 3
4456 - Bug fix in the lmm_solver.
4458 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
4459 through the function MSG_paje_output.
4460 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
4461 - It is possible to bound the rate of a communication in MSG with
4462 MSG_task_put_bounded() (was already in the previous version but I had forgotten
4463 to write it in the changelog).
4464 - Bug fix to let GRAS run on top of MSG until we move it directly on top
4469 - Various cleanups to the autotools stuff
4470 - Begin to move Gras examples to examples/gras/
4471 - Let make distcheck work again (yeah!)
4473 - documentation overhauled using doxygen.
4474 gtk-doc-tools is dead in SimGrid now.
4475 - Automatically extract all existing logging categories, and add the list
4476 to the documentation (long standing one, to say the less)
4478 - Cleanup the known architecture table. Reorder the entries to group what
4479 should be, and use a more consistent naming scheme.
4480 (some of the test dataset are still to be regenerated)
4481 - New! Allow library to register globals on each process just as userdata
4483 This is implemented using a xbt_dict and not a xbt_set, so we loose the
4484 lookup time (for now).
4485 Use it in msg and trp.
4486 This cleans a lot the internals and helps enforcing privacy of the
4487 headers between the gras components.
4488 - New! Add a timer mechanism, not unlike cron(8) and at(1).
4489 - Bugfix: gras_os_time was delirious in RL.
4490 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
4492 - Reenable GRAS now that it works.
4494 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
4496 SimGrid (2.90) unstable; urgency=low
4498 Alpha 1 on the path to SimGrid 3
4500 * It is a long time since the last release of SimGrid. I'm sorry about
4501 that but as I had told you, I was rewriting a lot of things. I apologize
4502 to those who had been reporting bugs to me and that I had not answered.
4503 If your bug is still in the new version, please tell me. Here is a
4504 summary of the main changes.
4506 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
4507 lead by Martin Quinson. As a consequence SimGrid gains a lot in
4508 portability, speed, and a lot more but you'll figure it out later.
4509 SimGrid now comprises 3 different projects: MSG, GRAS and SMPI.
4510 I wanted to release the new MSG as soon as possible and I have
4511 broken GRAS, which is the reason why, for now, only MSG is fully
4512 functional. A laconic description of these projects is available
4513 in the documentation.
4515 * REVOLUTION 2: I have removed SG and I am now using a new simulation
4516 kernel optimized for our needs (called SURF but only the developers
4517 should use it). Hence, MSG is now roughly 30 times faster and I think
4518 that by rewriting a little bit MSG, I could event speed it up a little
4519 bit more. Beside the gain in speed, it is also much easier to encode a
4520 new platform model with SURF than it was with SG. More to come...
4522 * REVOLUTION 3: I have tried to change a little as possible the API of
4523 MSG but a few things really had to disappear. The main differences
4524 with the previous version are:
4525 1) no more m_links_t and the corresponding functions. Platforms are
4526 directly read from an XML description and cannot be hard-coded
4527 anymore. The same format is used for application deployment
4528 description. The new format is described in the documentation.
4529 Have a look in tools/platform_generation. There is a tiny script
4530 that converts from the old platform format to the new one. Concerning
4531 the application deployment format, parsing the old one is tricky.
4532 I think most of you should however be able to convert your files. If
4533 it is really an issue, I can write a C code that does the conversion.
4535 2) the toolbox tbx does not exist anymore. We now have a library
4536 with much more data-structures but without the hash-tables (we have
4537 dictionaries that are much faster).
4539 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
4541 *****************************************************************************
4542 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
4543 * don't feel like converting the oldies. (Mt) *
4544 *****************************************************************************
4547 Version 2.90: "the long awaited one"
4548 - Finished rewriting and debugging MSG. Rewrote the documentation.
4549 - disable GRAS for now since it needs to be ported to the newest SG
4552 - Finish the port to windows (using mingw32 for cross-compile)
4555 - Main loop and datastructures of SURF. A cpu resource object is
4556 functional. Surf can thus be used to create cpu's with variable
4557 performance on which you can execute some actions.
4559 2004-11-15 Martin Quinson
4560 - Port to ARM. Simply added the alignment and size descriptions. Should
4561 work, but the ARM machines are so slow that I didn't had the opportunity
4562 to 'make check' over there yet.
4564 2004-11-15 Arnaud Legrand
4565 - Trace manager now written. It uses a heap structure and is therefore
4566 expected to be efficient. It may however be speeded up (particularly
4567 when many events occur at the same date) by using red and black
4568 trees. One day maybe...
4569 - Max-min linear system solver written. It uses a sparse matrix
4570 structure taking advantage of its expected use. Most operations are
4571 O(1) and free/calloc are called as few as possible. The computation of
4572 the minimum could however be improved by using a red and black tree
4575 2004-11-03 Arnaud Legrand
4576 - Rename every gras_* function that was in xbt/ to its xbt_
4578 - Add a heap and a doubly-linked list to xbt
4579 - Added a dichotomy to the dictionaries. make check works as well before
4580 so I assume that the patch is correct. I do not know however if things
4581 run effectively faster than before now. :)
4583 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
4584 SimGrid, and the version number is bumped to 2.x
4586 2004-10-29 Martin Quinson
4587 - Introduction of the remote errors.
4588 They are the result of a RMI/RPC on the remote machine.
4589 ErrCodes being scalar values, you can't get the host on which those
4590 errors did happen. Extending the error mechanism as in Gnome is possible.
4591 No idea yet whether it is a good idea.
4593 2004-10-28 Martin Quinson
4594 - Interface revolution: the Starred Structure Eradication.
4595 I used to do typedef struct {} toto_t; and then handle *toto_t.
4596 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
4597 - ???_t is a valid type (builded with typedef)
4598 - s_toto_t is a structure (access to fields with .)
4599 - s_toto is a structure needing 'struct' keyword to be used
4600 - e_toto_t is an enum
4601 - toto_t is an 'object' (struct*)
4603 typedef struct s_toto {} s_toto_t, *toto_t;
4604 typedef enum {} e_toto_t;
4605 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
4606 s_toto_t) is private.
4608 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
4609 so that it can set the variable to NULL. It was so for dicts and sets,
4610 it changed for dynars.
4612 - Fix a bunch of memleaks in dict_remove
4613 - Fix a bug in sg/server_socket opening: it failed all the time.
4615 2004-10-07 Martin Quinson
4616 - Speed up dynar lookup operation a bit.
4618 gras_dynar_get is dead.
4620 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
4621 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
4622 (which gives you the address of the stored data).
4624 gras_dynar_get_as is an helpful macro which allows you to retrieve a
4625 copy of the data using an affectation to do the job and not a memcpy.
4627 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
4628 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
4630 It does not really speedup the dynar test because they are
4631 setting elements all the time (and look them seldom). But the dict does
4632 far more lookup than setting.
4634 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
4636 2004-10-05 Martin Quinson
4637 - Allow to (en/dis)able the cycle detection at run time.
4639 Whether we should check for cycle or not is now a property of each
4640 datatype. When you think there may be some cycle, use datadesc_cycle_set.
4641 datadesc_cycle_unset allow to remove this property when previously set.
4643 Note that the cycle detection is off by default since it impacts the
4644 performance. Watch the data you feed GRAS with ;)
4646 This property is hereditary. Any element embedded in a structure having it
4647 set have it set for the time of this data exchange.
4649 You should set it both on sender and receiver side. If you don't set it on
4650 sender side, it will enter an endless loop. If you forget on receiver
4651 side, the cycles won't be recreated after communication.
4653 - Header reorganization.
4654 Kill gras_private.h, each submodule must load the headers it needs.
4656 2004-10-04 Martin Quinson
4657 - Interface revolution: do not try to survive to malloc failure.
4659 Now, gras_malloc and friends call gras_abort() on failure.
4660 As a conclusion, malloc_error is not a valid error anymore, and all
4661 functions for which it was the only gras_error_t return value are
4662 changed. They now return void, or there result directly.
4663 This simplify the API a lot.
4665 2004-09-29 Martin Quinson
4666 - Re-enable raw sockets.
4667 Created by gras_socket_{client,server}_ext;
4668 Used with gras_raw_{send,recv}
4671 It should allow to kill the last bits of gras first version soon.
4673 This is not completely satisfactory yet (duplicate code with
4674 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
4677 - Simplify transport plugin (internal) interface by not passing any
4678 argument to _server and _client, but embedding them in the socket
4681 2004-09-28 Martin Quinson
4682 - Finish the port to AIX.
4683 autoconf was my problem (segfault within the malloc replacement
4684 function. No idea why)
4686 2004-09-16 Martin Quinson
4687 - Fix some size_t madness on 64bit architectures.
4689 2004-09-08 Martin Quinson
4690 - Reduce the number of system headers loaded, overload some more system
4691 calls (such as malloc to cast the result of the system one, and work
4693 - Fix and reintroduce the config support
4695 2004-09-07 Martin Quinson
4696 - Source code reorganization to allow Arnaud to surf all over there.
4697 - Allow to document the logging categories.
4698 - Remove all uppercase from logging categories and useless cleanup in names.
4700 2004-08-18 Martin Quinson
4701 Version 0.6.2 (protocol not changed; API changed)
4702 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
4703 gras_error_t), and NULL when not found. Functions expecting a msgtype
4704 as argument (msg_wait; msg_send) deal with NULL argument by providing a
4705 hopefully usefull message.
4706 - Portability to prehistoric sparcs again
4708 2004-08-17 Martin Quinson
4709 Version 0.6.1 (protocol not changed; ABI not changed)
4710 - prealloc some buffers to speed things up
4712 2004-08-11 Martin Quinson
4713 Version 0.6 (protocol not changed; ABI expended)
4714 - The parsing macro can deal with the references, provided that you add
4715 the relevant annotations (using GRAS_ANNOTE(size,field_name))
4717 2004-08-09 Martin Quinson
4718 Version 0.5 (protocol not changed; ABI changed)
4719 - Allow to off turn the cycle detection code in data exchange at
4720 compilation time. It should be at run time, but I'm short of time (and
4721 the config stuff is still broken). That way, we keep dict out of the
4722 critical path, which is good because the performance is poor:
4723 - search not dichotomial yet
4724 - dynar give no way to access their content and memcpy everytime
4725 - In composed data description (struct, ref and so on), stop foolness of
4726 keeping the subtype's ID, but store the type itself. This keeps sets out
4727 of the critical path, which is good since they rely on dynar and
4728 dictionaries. The only loose of that is that we cannot detect the
4729 redeclaration of a structure/union with another content (but I'm not sure
4730 the code detected well this error before anyway). We still can detect
4731 the redefinition discrepancy for the other types.
4732 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
4733 it breaks the code because of type-punning used all over the place).
4734 This breaks on all non-gcc architectures (for now).
4736 All those changes (plus the buffer of last time) allow me to gain 2 order
4737 of magnitude on cruel tests consisting of 800000 array of integers on two
4738 level of a hierarchical structure (200 secondes -> 4 secondes)
4741 - the selector of reference must now return the type it points to, not
4742 the ID of this type.
4744 2004-08-06 Martin Quinson
4745 Version 0.4 (protocol changed; ABI not changed)
4746 - Allow to pass --gras-log argument to processes in simulation mode. Really.
4747 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
4748 - Implement a buffer transport, and use it by default (it relies on tcp in
4749 real life and on sg in simulation).
4750 That's a bit hackish since I had a new field to the structure to store
4751 its data without interfering with the subtype ones. Inheritance
4752 is tricky in C. And that's a kind of reverse inheritance with one class
4753 derivating two classes. Or maybe a game with java interfaces. Anyway,
4754 that's damn hard in C (at least).
4755 Moreover, I got tired while trying to ensure plugin separation and
4756 genericity in SG mode. MSG wants me to do weird things, so let's go for
4757 cruel hacks (temporarily of course ;).
4758 See comment in transport_private.h:71
4759 - do not include all the _interface headers in private but in the files
4760 which really need them (to cut the compilation time when they are
4763 2004-07-26 Martin Quinson
4764 Version 0.3 (protocol not changed; ABI changed)
4765 - Major overhault of the datadesc interface to simplify it:
4766 - shorted the function names:
4767 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
4768 - add a trivial way to push/pop integers into the cbps without malloc.
4769 This allows to make really generic sub_type description, which simply
4770 pop their size of the stack.
4771 - add a function gras_datadesc_ref_pop_arr() which does what users want
4772 most of the time: Declare a dynamic array (which pops its size of the
4773 stack) and declare a reference to it. Poor name, but anyway.
4774 - kill the post-send callback, add a post-receive one
4776 2004-07-23 Martin Quinson
4777 Version 0.2 (protocol changed; ABI changed)
4778 - add some testing for cpbs in the test cases, and fix some more bugs.
4779 This invalidate again the little64 data file, since I cannot regenerate
4781 - remove an awfull optimization in the logging stuff, allowing me to:
4782 - understand it again
4783 - learn gcc how to check that the argument match the provided format
4784 - fix all errors revealed by gcc after that
4785 - internal keys of dict are not \0 terminated. Deal with it properly in
4786 loggings instead of segfaulting when the user want to see the logs :-/
4788 2004-07-22 Martin Quinson
4789 - Fix some stupid bug preventing cbps (callback postit) from working
4791 2004-07-21 Martin Quinson
4792 - Some documentation cleanups
4793 - remove the useless last argument of msgtype_declare
4794 - rename the Virtu functions to fit into the 'os' namespace
4795 - move headers src/include -> src/include/gras/ and stop fooling with
4796 gras -> . symbolic link
4797 - make distcheck is now successful
4799 2004-07-19 Martin Quinson
4801 - Build shared library also
4802 - Install html doc to the right location
4803 - stop removing maintainer files in make clean
4804 - build tests only on make check
4806 2004-07-13 Martin Quinson
4808 - No major issue in previous version => change versioning schema
4809 - Re-enable little64 convertion test now that Abdou kindly regenerated the
4810 corresponding dataset.
4812 2004-07-11 Martin Quinson
4814 - Get it working with any kind of structure (we can compute the padding
4815 bytes remotely for all the architectures I have access to)
4816 - Implement the structure parsing macro (still not quite robust/complete)
4817 - Improvement to the remote testing toysuite
4819 2004-07-10 Martin Quinson
4820 [autoconf mechanism]
4821 - get ride of a bunch of deprecated macros
4822 - actually run the test for two-compliment, not only compile it :-/
4823 - test whether the structures get packed (and bail out if yes. Damn.
4824 Alignment is a serious matter)
4825 - test whether the structures get compacted (but respecting the alignment
4826 constraints of each types)
4827 - test whether the array fields of structures can straddle alignment boundaries
4829 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
4830 (took me 2 hours to find that bug, looking at the wrong place)
4831 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
4832 before sending/receiving and are used to compute the offsets of fields
4833 - Given that padding size depend even on compiler options, keep track of
4834 alignment and aligned_size only for the current architecture. Not a big
4835 deal since we send structure fields one after the other (seems
4837 - Add the datastructure used for IEEE paper by the PBIO guys to the test
4838 program, let it work on linux/gcc/little32. portability todo.
4840 2004-07-08 Martin Quinson
4841 - import and improve remote compilation support from FAST
4842 - make sure make check works on half a dozen of machines out there
4844 2004-07-07 Martin Quinson
4845 Let's say it's version 0.0.3 ;)
4846 - Implement conversions (yuhu!)
4847 - Let it work on solaris (beside conversion, of course)
4848 - Stupid me, using rand() to generate the conversion datatests in not wise.
4850 2004-07-06 Martin Quinson
4851 - Let make dist work, since I'm gonna need it to compile on remote hosts
4852 - Let Tests/datadesc_usage write the architecture on which the file was
4853 generated as first byte.
4854 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
4855 architecture descriptions.
4856 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
4857 on those architectures.
4858 - Optimization: send/recv array of scalar in one shoot
4860 2004-07-05 Martin Quinson
4861 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
4863 - Plug a whole bunch of memleaks
4864 - each process now have to call gras_{init,exit}. One day, their log
4865 settings will be separated
4866 - Continue the code factorisation between SG, RL and common in Transport.
4868 2004-07-04 Martin Quinson
4870 - Redistribution between SG and RL.
4871 We wanna have to accept in SG, so move accepted related parts of RL in
4872 the common part. (more precisely, the dynar of all known sockets is no
4873 more a static in transport.c, but part of the process_data)
4875 [gras_stub_generator]
4876 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
4878 2004-07-03 Martin Quinson
4879 - Create a new log channel tbx containing dict, set, log, dynar (to shut
4880 them all up in one shot)
4882 - Fix the ugly case of reference to dynamic array.
4883 - New (semi-public) function gras_datadesc_size to allow the messaging
4884 layer to malloc the needed space for the buffer.
4886 - gras_socket_close now expect the socket to close (and not its address to
4887 put NULL in it after it). This is because the socket passed to handlers
4888 is one of their argument (=> not writable).
4890 - propagate the interface cleanup from last week in datadesc, ie remove a
4891 superfluous level of indirection. User pass adress of variable
4892 containing data (both when sending and receiving), and not of a variable
4893 being a pointer to the data. Let's say that I like it better ;)
4894 The price for that is constructs like "int msg=*(int*)payload" in
4895 handlers, but it's a fine price, IMHO.
4897 - Let it work in RL (yuhu)
4899 2004-06-21 Martin Quinson
4901 - porting SG plugin and SG select to new standards (works almost).
4902 - plug memleaks and fix bugs around.
4905 - cleanup the prototype of data recv and force users to specify when they
4906 want to handle references to objects. Test case working even for cycles.
4907 - plug memleaks. Valgrind is perfectly ok with this.
4909 2004-06-12 Martin Quinson
4911 - cleanup the separation between plugin and main code in plugin creation
4913 2004-06-11 Martin Quinson
4915 - Reput hook for raw sockets, needed for BW experiments
4916 - kill a few lines of dead code
4917 [Data description] Interface cleanup
4918 - gras_datadesc_by_name returns the searched type or NULL.
4919 That way, no variable is needed to use a type desc once, which makes
4921 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
4922 two parameters were strings (field name, type name), leading to
4924 [Dicos] Interface cleanup
4925 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
4926 This is consistant with the dynar API.
4928 2004-04-21 Martin Quinson
4930 - Porting to new standards.
4932 - interface cleanup.
4933 There is no bag anymore, no need to take extra provision to mask the
4934 pointers behind "ID".
4935 Better splitup of functions between files create/exchange/convert.
4936 This is still a bit artificial since convert and receive are so
4937 interleaved, but anyway.
4939 - add a queued message list to procdata (the ones not matching criteria
4941 - factorize some more code between SG and RL wrt procdata
4943 - use gras_exit in example to track memleaks
4944 - get rid of gs_example now that GS is properly integrated into gras
4945 - update run_test to integrate the latest tests (datadesc)
4947 - rename WARNINGn macros to WARNn since it prooved error-prone
4949 2004-04-19 Martin Quinson
4951 - register init/exit functions within gras module mechanism
4952 - send/receive function.
4953 Convertion is not implemented, but short-cutted if not needed.
4954 struct/array elements are sent one by one (instead of block-wise), but
4955 nobody really cares (yet). Get a prototype before optimizing.
4956 - tests (using a file socket) for DD send/receive on:
4957 - base types: int, float
4958 - array: fixed size, string (ie ref to dynamic string)
4959 - structure: homogeneous, heterogeneous
4960 - chained list, graph with cycle
4961 Believe it or not, valgrind is not too unhappy with the results. The
4962 cycle happily segfaults, but the others are ok. And I'm sick of pointers
4966 - Bugfix when using a filename explicitly (instead of '-')
4968 2004-04-09 Martin Quinson
4970 - factorize more code between RL and SG in socket creation
4971 - Complete the implementation and tests of:
4973 o file (only in RL, and mainly for debugging)
4975 I lost 3 days to design a portable address resolver, and then decided
4976 that the prototype mainly have to run on my box.
4977 Addressing portability too early may be like optimizing too early :-/
4979 - use gras_init in the Tests instead of the crappy parse_log_opt
4980 (the latter function is removed)
4981 [Conditional execution]
4982 - New functions: gras_if_RL/gras_if_SG (basic support for this)
4983 [Code reorganisation]
4984 - Get rid of libgrasutils.a since it makes more trouble than it solves.
4985 Build examples against the RL library, since there is no way to disable
4986 its creation for now.
4988 For information, the beginning of coding on GRAS was back in june
4989 2003. I guess that every line has been rewritten at least twice since