1 SimGrid (3.33.1) not released yet (target December 22)
3 Save the planet, skip a release: 3.33 was due 6 months ago, so skip directly to 3.34.
6 - SimGrid now requires a compiler with C++17 support for public headers too.
7 Sibling projects should upgrade their FindSimGrid.cmake
8 - Remove the MSG API: its EOL was scheduled for 2020.
9 - Remove the Java bindings: they were limited to the MSG interface.
10 - On Windows, you now need to install WSL2 as the native builds are now disabled.
11 It was not really working anyway.
12 - Support for 32bits architecture is not tested anymore on our CI infrastructure.
13 It may break in the future, but we think that nobody's using SimGrid on 32 bits.
14 - Remove the surf module. It was replaced by the kernel/models module, and that
15 refactoring took almost 10 years to properly complete.
18 - Activity::set_remaining() is not public anymore. Use for example
19 Comm::set_payload_size() to change the size of the simulated data.
20 - New function: Engine::flatify_platform(), to get a fully detailed vision of the
22 - New Task abstraction: They are designed to represent dataflows, i.e, graphs of repeatable Activities.
23 See the examples under examples/cpp/task-* and the associated documentation.
24 - Full simDAG integration: Activity::start() actually starts only when all dependencies
25 are fulfilled. If it cannot be started right away, it will start as soon as it becomes
27 - Allow to set a concurrency limit on disks and hosts, as it was already the case for links.
28 - Rename Link::get_usage() to Link::get_load() for consistency with Host::
29 - Every signal now come with a static version that is invoked for every object of that class,
30 and an instance version that is invoked for this specific object only. For example,
31 s4u::Actor::on_suspend_cb() adds a callback that is invoked for the suspend of any actor while
32 s4u::Actor::on_this_suspend_cb() adds a callback for this specific actor only.
33 - Activity::on_suspended_cb() is renamed to Activity::on_suspend_cb(), and fired right before the suspend.
34 - Activity::on_resumed_cb() is renamed to Activity::on_resume_cb(), and fired right before the resume.
35 - Resource::on_state_change_cb() is renamed to Resource::on_onoff_cb() to distinguish from the
36 Activity::on_state_change_cb() that is related to the activity state machine, not on/off.
37 - Activity signals (veto, suspend, resume, completion) are now specialized by activity class.
38 That is, callbacks registered in Exec::on_suspend_cb will not be fired for Comms nor Ios.
41 - Battery: Enable the management of batteries on hosts.
42 See the examples under examples/cpp/battery-* and the documentation in the Plugins page.
43 - Photovoltaic: Enable the management of photovoltaic panels on hosts.
44 See the examples under examples/cpp/photovoltaic-* and the documentation in the Plugins page.
47 - optimize an internal data structure (use a set instead of a list for ongoing activities),
48 leading to a potentially big performance gain, in particular with many detached comms.
51 - New option smpi/barrier-collectives to add a barrier to some collectives
52 to detect dangerous code that /may/ work on some MPI implems.
53 - New function SMPI_app_instance_start() to easily start a MPI instance in your S4U simulation.
56 - Write the section of the manual about models, at least.
57 - WiFi: the total capacity of a link depends on the amount of flows on that link.
58 - Use the nonlinear callback feature of LMM to reflect this.
59 - Calibration values can be changed to match different MCS configurations
60 - See the example teshsuite/models/wifi_usage_decay/wifi_usage_decay.cpp
61 - See also "A Flow-Level Wi-Fi Model for Large Scale Network Simulation"
62 https://hal.archives-ouvertes.fr/hal-03777726
63 - Merge parameters network/bandwidth-factor and smpi/bw-factor that serve the same purpose.
64 - Same for the latency
65 - Rewrite the corresponding documentation.
66 - Allow to disable the TCP windowing modeling by setting network/TCP-gamma to 0.
67 - Finally kill the 'compound' host model. You can change the CPU or network model
68 with the default host model, as it should.
69 - Rename option "surf/precision" to "precision/timing" for clarity.
70 - Rename option "maxmin/precision" to "precision/work-amount" for clarity.
71 - New function: Engine::flatify_platform() to debug your platform.
74 - Implement pthread_join in MC mode.
75 - Implement semaphore functions in sthread.
76 - Add an intricated way to verify the access to non-reentrant data structures
77 It requires code annotation, as shown in examples/sthread/stdobject/stdobject.cpp
80 - Stateless model-checking is now usable on any system, including Mac OSX and ARM processors.
81 - The stateless aspects of the MC are now enabled by default in all SimGrid builds.
82 Liveness and stateful aspects are still controlled by the enabling_model-checking
84 - Introducing ODPOR and SDPOR reduction strategies
85 - Introducing guiding heuristics, trying to find bugs faster than DFS in reduced state space.
86 - Synchronize the MBI tests with upstream.
87 - Show the full actor backtraces when replaying a MC trace (with model-check/replay)
88 and the status of all actors on deadlocks in MC mode.
91 - simgrid::xbt::cmdline and simgrid::xbt::binary_name are gone.
92 Please use simgrid::s4u::Engine::get_cmdline() instead.
95 - New tutorial on simulating DAGs.
96 - New section in the user guide on the provided performance models.
97 - New section presenting some technical good practices for (potential) contributors.
98 - Add a section on errors and exceptions to the API documentation.
99 - Move the s4u examples to a section on their own to ease navigation.
101 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
102 (FG: issues on Framagit; GH: issues on GitHub)
103 - FG#18: Java bindings should be redone or removed
104 - FG!118: Wi-Fi callback mechanism
105 - FG!119: SMPI: add option to inject a barrier before every collective call
106 - GH#383: Segfault when adding a disk after load_platform(xml)
108 ----------------------------------------------------------------------------
110 SimGrid (3.32) October 3. 2022.
112 The Wiedervereinigung release. Germany was reunited 32 years ago.
115 - SimGrid now requires a compiler with C++17 support to compile the lib.
116 Our public headers still allow the user code to be compiled in C++14.
117 - Support graphviz v3 and ns-3 v3.36 (older versions are still supported).
118 - Tested with clang (v11, v13, v14 and v16), gcc (v7 to v13) and IntelCC v2022.2
122 - kill signal Comm::on_completion that was not working anyway.
123 - Expose signals Activity::on_suspend and Activity::on_resume
124 - New macro xbt_enforce(): similar to xbt_assert(), but throws an AssertionError
125 instead of calling abort().
126 - New: s4u::Exec::get_thread_count()
127 - Various cleanups around virtual machines:
128 - host_by_name() and friends now only return hosts. VMs are now excluded.
129 - It is now impossible to search a VM by name globally.
130 You can only search VM by name on a given PM, so either you know
131 the PM on which your VM runs and you can search by name, or you need
132 to manually iterate over all PMs to search this VM.
133 - The s4u::VirtualMachine constructor is now deprecated.
134 Please use s4u::Host::create_vm() instead.
135 - Rename s4u::VirtualMachine::on_creation() to on_vm_creation() to
136 avoid confusion with s4u:Host::on_creation() that is inherited.
137 Also s4u::VirtualMachine::on_destruction -> on_vm_destruction().
139 - One-sided communications (Comm::sendto) can now be detached,
140 and should now be more resilient to network and host faults.
143 - Added the following bindings / examples:
144 - Comm (now 100% covers the C++ interface):
145 - Comm.dst_data_size, Comm.mailbox, Comm.sender, Comm.start_time, Comm.finish_time
146 - Comm.state_str [examples: examples/python/comm-failure/, examples/python/comm-host2host/]
147 - Comm.remaining [examples: examples/python/comm-host2host/, examples/python/comm-suspend/]
148 - Comm.set_payload_size [example: examples/python/comm-host2host/]
149 - Comm.set_rate [example: examples/python/comm-throttling/]
150 - Comm.sendto, Comm.sendto_init, Comm.sendto_async [example: examples/python/comm-host2host/]
151 - Comm.start, Comm.suspend, Comm.resume [example: examples/python/comm-host2host/]
152 - Comm.test_any [example: examples/python/comm-testany/]
153 - Comm.wait_until [example: examples/python/comm-waituntil/]
155 - Engine.host_by_name [example: examples/python/comm-host2host/]
156 - Engine.mailbox_by_name_or_create [example: examples/python/comm-pingpong/]
158 - Mailbox: Mailbox.ready [example: examples/python/comm-ready/]
159 - Ptask [example: examples/python/exec-ptask/]:
160 - this_actor.exec_init
161 - this_actor.parallel_execute
164 - Added an AssertionError exception that may be thrown in case of error.
165 For instance, creating two hosts with the same name will now throw this exception
166 instead of killing the interpreter.
169 - Implement MPI_File_get_type_extent(), MPI_File_s/get_atomicity() and
170 MPI_File_get_byte_offset()
171 - Intercept getpid() calls to return the simulated ones.
172 - Fix various bugs in MPI IO.
174 Platform description & visualization:
175 - More robust sanity checks for platforms, to reject forbidden topologies with
176 a proper error message.
177 - New platform example: supernode.cpp and supernode.py.
178 The Python version generates a nice graphical representation of the platform.
179 - Bug fixes around fat-tree topologies.
180 - Allow to dump the platform topology as a CSV file representing the graph edges
181 with platform_graph_export_csv() (similar to the DOT export).
182 - Fix graphicator for "cluster" topologies (e.g. fat-tree, dragonfly).
185 - Fix a bug when using ptasks with multicores (FG!111).
188 - First bits of sthread, that intercepts pthread operations at runtime.
189 The intend is to use it together with simgrid-mc, but it is TBD.
190 - Sync MBI generators with upstream changes.
191 - Various cosmetics, small bug fixes and inner refactorings
193 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
194 (FG: issues on Framagit; GH: issues on GitHub)
195 - FG#105: "Variable penalty should not be negative!" with in-flight messages and bandwidth profiles
196 - FG#109: Application time reported by --cfg=smpi/display-timing:yes is wrong
197 - FG#110: Wait_any does not trigger new model solve when host events occur
198 - FG#111: Wrong execution time in rare cases when using multicore
199 - FG!98: Re-enable the tests for legacy stochastic profiles
200 - FG!109: Trigger new engine solve upon host events such as host on/off
201 - FG!116: SMPI/replay: Fix issue with recv of size =0
203 ----------------------------------------------------------------------------
205 SimGrid (3.31) March 22. 2022.
207 The ненасильство release. We stand against war.
209 Against the agression by a sick system that forces peoples to take arms against each other.
212 - Rework the internals, for simpler and modern code. This shall unlock many future improvements.
213 - You can now define plugins onto the DFS explorer (previously called SafetyChecker), using the
214 declared signals. See CommunicationDeterminism for an example.
215 - Support mutex, semaphore and barrier in DPOR reduction
216 - Seems to work on Arm64 architectures too.
217 - Display a nice error message when ptrace is not usable.
218 - New test suite, imported from the MPI Bugs Initiative (MBI). Not all MBI generators are integrated yet.
219 - Remove the ISP test suite: it's not free software, and it's superseeded by MBI.
222 - fix for FG#100 by ensuring small asynchronous messages never overtake larger
223 ones, conforming to the standard.
224 - replay: fix waitall behaviour to avoid forgetting requests and leaking
226 - tracing: ensure that we dump the TI traces continuously during execution and
227 not just at the end, reducing memory cost and performance hit.
228 - Update OpenMPI collectives selection logic to match current one (4.1.2)
229 - Add a coherence check for collective operation order and root/MPI_Op
230 coherence. Potentially costly so not activated unless smpi:pendantic is set
231 or -analyze is given.
234 - New signal: Engine::on_simulation_start_cb()
235 - Introduce a new execution mode with this_actor::thread_execute(). This simulate
236 the execution of a certain amount of flops by multiple threads ran by a host. Each
237 thread executes the same number of flops, given as argument. An example of this new
238 function can be found in examples/cpp/exec-threads.
239 - Reimplementation of barriers natively.
240 Previously, they were implemented on top of s4u::Mutex and s4u::ConditionVariable.
241 The new version should be faster (and can be used in the model-checker).
242 - Actor::get_restart_count(): Returns the number of reboots that this actor did.
245 - MSG_barrier_destroy now expects a non-const msg_barrier parameter.
247 New plugin: the Chaos Monkey (killing actors at any time)
248 - Along with the new simgrid-monkey script, it tests whether your simulation
249 resists resource failures at any possible timestamp in your simulation.
250 - It is mostly intended to test the SimGrid core in extreme conditions,
251 but some users may find it interesting too.
254 - New solver for parallel task: BMF.
255 - More realistic sharing of heterogeneous resources compared to the fair
256 bottleneck solver used by ptask_L07.
257 - Implement the BMF (Bottleneck max fairness) fairness.
258 - Improved resource sharing for parallel tasks with sub-flows (parallel
259 communications between same source and destination inside the ptask).
261 - "--cfg=host/model:ptask_L07 --cfg=host/solver:bmf": enable the ptask
262 model with BMF solver.
263 - "--cfg=bmf/max-iterations: <N>": maximum number of iterations performed
264 by BMF solver (default: 1000).
265 - "--cfg=bmf/precision: <N>": numerical precision used when computing
266 resource sharing (default: 1e-12).
267 - This model requires Eigen3 library. Make sure Eigen3 is installed to use BMF.
270 - Modifications of the Profile mechanism, with some impact on users
271 - Addition of a new (S4U) method to init profiles from generic functions to improve versatility
272 - Fix initial behaviour of state_profiles
273 - Modify periodicity to behave like a period, and not like a loop delay
276 - Drop xbt_dynar_shrink().
279 - Made the following bindings static (previously member functions):
280 - Actor: Actor.kill_all(), Actor.by_pid()
281 - Host: Host.by_name(), Host.current(), Host.on_creation_cb()
282 - Mailbox: Mailbox.by_name()
283 - Added the following bindings:
284 - this_actor.warning()
285 - Mailbox.put_init() [example: examples/python/comm-waitallfor/]
286 - Comm.detach() [example: examples/python/comm-waitallfor/]
287 - Comm.wait_for() [example: examples/python/comm-waitfor/]
288 - Comm.wait_any_for()
289 - Comm.wait_all_for() [example: examples/python/comm-waitallfor/]
290 - Mutex [example: examples/python/synchro-mutex/]
291 - Barrier [example: examples/python/synchro-barrier/]
292 - Semaphore [example: examples/python/synchro-semaphore/]
295 - Remove target "make uninstall" which was incomplete and no longer maintained.
297 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
298 (FG: issues on Framagit; GH: issues on GitHub)
299 - FG#57: Mc SimGrid should test whether ptrace is usable
300 - FG#87: Smpi scripts fail with spaces in paths
301 - FG#100: [SMPI] Order of the message matching is not guaranteed
302 - FG#101: LGPL 2.1 is deprecated license
303 - FG#104: "make uninstall" not up-to-date
304 - GH#151: Missing mutexes for DPOR.
306 ----------------------------------------------------------------------------
308 SimGrid (3.30) January 30. 2022.
310 The Sunday Bloody Sunday release.
312 Main user-visible changes:
313 - The SimDag API for the simulation of the scheduling of Directed Acyclic
314 Graphs has been dropped. It was marked as deprecated for a couple of years.
315 We finally complete the implementation of what has been called SimDag++
316 internally, i.e., porting the different features of SimDag on top of S4U.
317 The new way to simulate the execution of dependent activities directly by
318 maestro (without any other actor) is details in the examples/cpp/dag-* series
320 - The removal of SimDag led us to also remove the export to Jedule files that
321 was tightly coupled to SimDag. The instrumentation of DAG simulation is still
322 possible through the regular instrumentation API based on the Paje format.
323 - We also dropped the old and clumsy Lua bindings to create platforms in a
324 programmatic way. It can be done in C++ in a much cleaner way now, which
325 motivates this suppression.
328 - Introduce on_X_cb() functions for all signals, to attach a new
329 callback to the signal X. The signal variables are now hidden and
330 only these functions should be used.
331 Rationale: this enables the usual deprecation scheme where functions
332 remain for 4 releases if we need to modify the signals, while the
333 current code with the signal variables directly visible prevents any
335 - New function: Engine::run_until(date), to split the simulation.
336 - New signal: Activity::on_veto, to detect when an activity fails to start.
337 - Signal change: Comm::on_start(Comm&, bool) has been replaced by
338 Comm::on_send and Comm::recv. These two signals respectively correspond to
339 when the sending or receiving side of a Comm is ready. They are raised at
340 the same locations as the former Comm::on_start signal.
341 - New function: Engine::track_vetoed_activities() to interrupt run()
342 when an activity fails to start, and to keep track of such activities.
343 Please see the corresponding example for more info.
344 - New functions: s4u::Comm::{sendto_init, set_source, set_destination} to enable
345 the use of vetoers with direct host-to-host communications. Both source and
346 destination have to set for a comm to start. Each call to these setters check
347 if all vetoes are satisfied. When it is the case, the comm starts. A use case of
348 these functions is given in examples/cpp/dag-scheduling.
349 - New functions: {Exec, Io}::update_priority allow you to modify the priority of
350 these kinds of activities during their execution. Behavior is detailed in
351 examples/cpp/io-priority/.
354 - Dynamic costs for MPI operations: New API to allow users to dynamically
355 change injected costs for MPI_Recv, MPI_Send and MPI_Isend operations.
356 Alternative for smpi/or, smpi/os and smpi/ois configuration options.
357 - Fix some issues with the replay mechanism.
360 - Function xbt::Extendable::get_data() is now templated with the type of the
361 pointee. Untyped function is deprecated. Use get_data<void>() if you still
362 want to retrieve void*.
365 - New section: "SimGrid MPI calibration of a Grid5000 cluster"
366 presenting how to properly calibrate MPI communications in SimGrid.
367 - Complete and reword the platform section, which is now completed.
370 - Thread contexts are used by default with Python bindings. Other kinds of
371 contexts revealed unstable, specially starting with pybind11 v2.8.0.
373 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
374 (FG: issues on Framagit; GH: issues on GitHub)
375 - FG#95: Wrong computation time for multicore execution after pstate change
376 - FG#97: Wrong computation time for ptask+multicore+pstates
377 - FG#98: SMPI offline simulation is inconsistent with the online simulation
378 (deadlocks / message truncation)
379 - FG#99: Weird segfault when not sealing an host
381 ----------------------------------------------------------------------------
383 SimGrid (3.29) October 7. 2021
385 The "Ask a stupid question" release.
387 We wish that every user ask one question about SimGrid to celebrate.
388 On Mattermost, Stack Overflow or using the issues tracker.
390 New modeling features:
391 - Non-linear resource sharing, modeling resources whose performance heavily degrades with contention:
392 - The total capacity may be updated dynamically through a callback
393 and depends mainly on the number of concurrent flows.
394 - Examples (both cpp and python): io-degradation, network-nonlinear, exec-cpu-nonlinear
396 - Dynamic factors: model variability in the speed of activities
397 - Each action can now have a factor that affects its progression.
398 This multiplicative factor is applied when updating the amount of work
399 remaining, thereby an activity with factor=0.5 only uses half of the
400 instantaneous power/bandwidth it is allocated and will appear twice
401 slower than what it actually consumes.
402 - This can be used to model a overhead (e.g., there is a 20 bytes
403 header in a 480 bytes TCP packet so the factor 0.9583) but the novelty
404 is this factor can now easily be adjusted depending on activity's and
405 resources characteristics.
406 - This existed for network (e.g., the effective bandwidth depends
407 on the message in SMPI piecewise-linear network model) but it is now
408 more general (the factor may depend on the source and destination and
409 thus account to different behaviors for intra-node communications and
410 extra-node communications) and is available for CPUs (e.g., if you
411 want to model an affinity as in the "Unrelated Machines" problem in
412 scheduling) and disks (e.g., if you want to model a stochastic
414 - For that, resources can be provided with a callback that computes
415 the activity factor when creating the action.
416 - Example: examples/cpp/exec-cpu-factors
417 - The same mechanism is also available for the latency, which
418 allows to easily introduce complex variability patterns.
421 - Added support to programmatic platform creation in Python.
422 Example: examples/python/clusters-multicpu
425 - Disk and Host now have a set_sharing_policy() too, for non-linear sharing.
426 This can only be set through the API, not through XML files.
430 - Multiple fixes to ensure reproducibility of tracing
431 - scan/excan can now be replayed
432 - wait action now uses ranks and not pid, as the other ones.
433 - smpi/init and smpi/finalization-barrier are now valid for replays.
434 - exit() is now intercepted by SMPI to avoid premature shutdown of
435 simulation. First non 0 return codes is returned as simulation return
439 * New section "Release Notes" documenting recent and current developments.
440 * New section "Modeling I/O: the realistic way" presenting how to properly model disks in SimGrid.
441 * Improvements in API Reference for C++ and Python interfaces.
444 - Make wifi creation compatible with ns-3 version 3.34 too.
446 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
447 (FG: issues on Framagit; GH: issues on GitHub)
448 - FG#77: Search feature of doc is broken (update sphinx theme version)
449 - FG#78: Multiple fixes for SMPI replay:
450 - TI tracing of allotallv/w was outputting wrong values
451 - MPI_LOGICAL in fortran is actually 32 bits wide, and not 8.
453 ----------------------------------------------------------------------------
455 SimGrid (3.28) July 14. 2021
457 The Victoriadagarna Release.
460 - C++ platform interface: Users can now describe their platform directly in C++.
461 This provides greatly flexibility and performance improvement for complex
462 platforms. Main features:
463 - Fat-Tree/DragonFly/Torus composing: allows you to create clusters of
464 "zones", instead of single hosts. This feature enables the description
465 of clusters with complex hosts, composed of several CPUs, GPUs, etc.
466 - StarZone: new zone with a Star-like topology. The routes are defined
467 as a set of links used to communicate from node to everybody (node<->ALL).
468 - Split-Duplex links: auxiliary method to create split-duplex links in
469 the platform, easing its utilisation. It automatically creates both UP
470 and DOWN links (similarly as done in XML).
471 - Please refer to the documentation and the examples included:
472 e.g. examples/cpp/clusters-multicpu/ and examples/platforms/*.cpp.
473 - New plugin: Producer-Consumer with monitor. Just requires to include the
474 include/simgrid/plugins/ProducerConsumer.hpp header to be used. See the
475 associated example (examples/cpp/plugin-prodcons).
478 - New: s4u::Comm::wait_all_for() (like s4u::Comm::wait_all, but with a timeout),
479 s4u::Io::wait_any(), s4u::Io::wait_any_for().
480 - Methods test_all/test_any/wait_all/wait_any in s4u now take their vector
481 parameter by reference, instead of a pointer.
482 - Fixed a bug where Activity::wait_for() killed the activity on timeout.
483 Explicitly cancel the activity to get back to previous behavior.
484 - New: Link::set_concurrency_limit() to limit the amount of concurrent flows.
487 - The default SMPI compiler flags are no more taken from the environment.
488 They can be explicitly set through cmake parameters SMPI_C_FLAGS,
489 SMPI_CXX_FLAGS, or SMPI_Fortran_FLAGS.
491 --cfg=smpi/finalization-barrier: which can be used to add
492 a barrier inside MPI_Finalize. This can help for some codes which cleanup
493 data attached to a process, but still used in other SMPI processes.
494 --cfg=smpi/errors-are-fatal: True by default, behaves like if MPI_ERRORS_RETURN
495 is active when set to false, to keep going after a small error
496 --cfg=smpi/pedantic: True by default. Do not report some harmless MPI errors
497 which may or may not be problematic in the end.
499 - fix behaviour, as maximum iteration count could be ignored
500 - add SMPI_SAMPLE_LOCAL_TAG and SMPI_SAMPLE_GLOBAL_TAG macros, to allow user to
501 use sampling when the same kernel is called with a different set of parameters
502 which have an impact on the timing.
503 - realloc is now intercepted, to be coherent, as malloc/calloc/free were already.
504 It should now work with smpi/auto-shared-malloc-thresh.
505 - Improve error handling and reporting in multiple places
506 - Improve correctness checks on the MPI code.(MPI_Op and MPI_Datatype
507 validity checks, truncated messages are now an error, return errors
508 when explicitely deleted handles are reused, ...)
509 - RMA: multiple fixes and stability improvements.
510 - analysis (-analyze flag in smpirun):
511 - SMPI can now report buffer leaks as well as MPI handles leaks,
512 if code was compiled without SMPI_NO_OVERRIDE_MALLOC.
513 - if -trace-call-location is used when compiling, SMPI can report
514 origin of leaked handles/buffers
515 - group leaks by type/origin in output message if possible
516 - New implemented MPI calls: MPI_Comm_test_inter
519 - Changed internal implementation of bandwidth factors in network models.
520 Models affected: CM02, LV08 (default), SMPI, IB.
521 Configuration affected: "network/bandwidth-factors" and "smpi/bw-factors".
522 Bandwidth factors are applied to communications to describe that users
523 cannot use 100% of the available bandwidth. For example, the default network model,
524 LV08, applies a factor of 0.97 to the bandwidth. In older versions, this
525 behavior was implemented by limiting the bandwidth available in the LMM
526 system for this flow. This may give the false impression that there is
527 bandwidth available for other flows due to its underutilization, especially
528 for the dynamic bandwidth factors used in SMPI models.
529 To avoid this, we have modified the implementation so that each flow uses the
530 maximum physical bandwidth according to the LMM system.
531 However, the actual throughput of the flow seen by the user is defined by
532 the physical bandwidth multiplied by the bandwidth factor.
533 This change impacts on the simulation results for all network models on
534 which we have bandwidth factors configured.
535 *****************************************
536 *DO NOT MIX 3.28 RESULTS WITH OLDER ONES*
537 *****************************************
538 This change may impact on the timing of your simulation results.
539 Take care when comparing simulations from different SimGrid's
540 versions. Sorry for the inconvenience.
541 - Dynamic network factors: users can configure a callback to define
542 the network factors dynamically. This API is available at
543 simgrid::kernel::resource::NetworkModelIntf.
544 - Users have access to complete information about the current communication
545 to decide which factor to apply. This includes: message size, source and
546 destination hosts, links and zones traversed.
547 - Dynamic factors for both latency and bandwidth.
548 - For more details, see the example in (examples/cpp/network-factors).
549 - Plugin host_energy: the "watt_off" and "watt_per_state" host properties,
550 deprecated since version 3.24, are no longer supported. Instead, use
551 "wattage_off" and "wattage_per_state".
554 - xbt_assert is not disabled anymore, even when built with enable_debug=off.
557 - New tutorial: Model-checking and formal assessment
558 - New sections: "Demystifying the routing" and "C++ platforms"
559 - Update and improve the part on visualization in MPI and Algo tutorials.
560 - Improve the section on routing: how to define it, how it's used internally
561 - Fix many issues, broken links and missing references in doxygen and Sphinx
564 - Lua platform files are deprecated. Their support will be dropped after v3.31.
567 - Legacy functions deprecated in this release: SIMIX_get_clock(), SIMIX_run().
569 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
570 (FG: issues on Framagit; GH: issues on GitHub)
571 - FG#47: Complete and fix tests from teshuite/s4u/activity-lifecycle
572 - FG#64: Configuring smpi/IB-penalty-factors
573 - FG#67: Running computation concurrently with MPI_Iallreduce
574 - FG#69: Tutorial misleading users of pre-v3.26 versions of SimGrid
575 - FG#71: Segmentation fault on invalid gw_src/gw_dst
576 - GH#322: Issue when an actor kills his host vm
578 ----------------------------------------------------------------------------
580 SimGrid (3.27) March 29. 2021
582 The Ragnar Release (anniversary of the siege of Paris by Vikings in 845)
584 Main user-visible changes:
585 - All functions marked as deprecated for one year were removed.
586 - Removed all that was related to the "Storage" type in all APIs and bindings.
587 "Disks" have been introduced more than a year ago to replace them for the better.
588 It's time to finish this replacement.
589 - SMPI ABI breaks from previous version: MPI global handles (predefined datatypes,
590 ops, COMM_WORLD) are now defined differently, and can be used in initializers,
591 avoiding "initializer element is not constant" errors with some codes. Please be
592 careful to recompile your MPI codes if switching to this new SimGrid version.
593 - Network model ns-3 now requires version ns-3.28 or higher.
594 - Removed some option aliases that were deprecated since v3.23 (June 2019)
595 - 'verbose-exit' is now 'debug/verbose-exit'
596 - 'simix/breakpoint' is now 'debug/breakpoint'
597 - 'clean-atexit' is now 'debug/clean-atexit'
600 - New functions: Comm::sendto_{init,async} to initiate a communication
601 on between two (possibly remote) hosts.
602 - Define new template functions Mailbox::get_unique(), returning a std::unique_ptr.
603 - Functions Mailbox::get() and Mailbox::get_async() are now templated with the
604 type of the pointee. Untyped functions are deprecated. Use Mailbox::get<void>()
605 or Mailbox::get_async<void>() if you really want to play with void*.
606 - Unify the interface of Activity::on_{start/activity}
607 - New function: Comm::get_dst_data()
608 - New function: Comm::set_payload_size() to set the amount of bytes to simulate.
611 - ptask should now work better with multicore hosts (FG#37).
612 - Internal cleanups and refactoring around activities, to prepare for SimDAG++.
613 - Internal cleanups and refactoring around models, to prepare for programmatic
615 - Modernize our tests of the performance models
619 - New section: Configuring the logs from the command line.
620 - New section: Programming API of logs.
621 - New section: Getting realistic results
622 - New section: Examples of SMPI Usage
623 - New part: SimGrid's Internals, with a section on Design goals
624 - Move back to the classical Breathe tool chain, and fix many small glitches.
627 - Handle leak checking: SMPI will now display a message if MPI handles are still
628 present at the end of a simulation. Option smpi/list-leaks:n will display the n
629 first leaked pointers and their types.
630 - smpi/display-allocs option : Display Memory allocations analysis, with hints
631 about the largest allocations. This only works for allocations with malloc/calloc
632 and not compiled with SMPI_NO_OVERRIDE_MALLOC
633 - "-analyze" option in smpirun will activate smpi/display-allocs and smpi/display-timing
634 - New implemented MPI calls: MPI_File_set_size, MPI_Aint_add, MPI_Aint_diff,
635 MPI_Type_get_extent_x, MPI_Type_get_true_extent_x, MPI_Status_set_elements_x
636 - Support for MPI C++ datatypes (MPI_CXX_BOOL, MPI_CXX_FLOAT_COMPLEX,
637 MPI_CXX_DOUBLE_COMPLEX, MPI_CXX_LONG_DOUBLE_COMPLEX)
638 - Replay now opens and parses the trace file only once for all ranks when possible.
640 - better handling of MPI_PROC_NULL
641 - MPI_Group_incl was broken in some cases
642 - PAPI tracing now fixed
643 - MPI_Errhandlers are properly handled for MPI_COMM_WORLD
644 - SMPI will now fail properly when receive size < sent size, instead of
645 just setting MPI_ERR_TRUNCATE and keep going.
646 - Proxy Apps ( https://framagit.org/simgrid/SMPI-proxy-apps ):
647 - Remove useless build patches and split build/run patches on the page
648 - Build in parallel when possible
649 - Test on yum-based systems
650 - New nightly tested Proxy-apps:
651 - OpenMPI mpi-test-suite
652 - Coral MCB, LSMS, Qbox, CLOMP
653 - ECP/Mantevo Cloverleaf3D, Ember
654 - Codevault bhtree_mpi
657 - Only initialize the Dwarf parser when needed, saving 10 seconds in most cases.
658 - Start to overhaul the implementation to modernize it (still ongoing).
661 - Drop simgrid::xbt::demangle(). Please use boost::core::demangle() instead.
662 - Drop xbt_dynar_cursor_rm(), xbt_dynar_search_or_negative(),
663 xbt_str_split_quoted(), xbt_str_split_quoted_in_place().
664 - Deprecate xbt_dynar_to_array().
665 - When an exception occurs in kernel mode, display both the actor and kernel stacks.
667 C binding and interface:
668 - Rename (lowercase) functions sg_actor_get_PID, sg_actor_get_PPID, sg_actor_by_PID.
669 - Constness requirement has been lowered for parameter argv of sg_actor_start()
670 and sg_actor_create() It's now (char* const*). The previous version is still
671 available as sg_actor_start_() and sg_actor_create_().
673 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
674 (FG: issues on Framagit; GH: issues on GitHub)
675 - FG#37: Parallel tasks are limited to 1 core per host
676 - FG#62: Running "smpirun -replay" on large networks
677 - FG!46: Fix a few potential memory leaks in SMPI colls
678 - GH#343: Wrong consumed energy when an exec timeouts
680 ----------------------------------------------------------------------------
682 SimGrid (3.26) December 15. 2020
684 The Release release (the French lockdown was eased today).
686 Important user-visible changes:
687 - SimGrid now requires a compiler with C++14 support.
688 Sibling projects should upgrade their FindSimGrid.cmake
689 - Surf precision default value is now 1e-9, instead of 1e-5. This was changed as
690 several users had difficulties to understand issues when using high bandwidth or
691 small latency events. The new value was already the default for SMPI and
692 should not cause too much performance hit. It can change some simulation
693 timings if simulation was skipping a lot of small events (which was actually
694 an issue per see). The old value can be restored with --cfg=surf/precision:1e-5.
695 - On some network models (L07, CM02, LV08), an implicit loopback link is created
696 for local communication. Default bandwidth was 500MBps and latency was 15µs,
697 which was rather bad. Default values have been changed to 10GBps and 0 latency.
698 Options network/loopback-lat and network/loopback-bw have been added to adapt
699 these values if needed. Network and routing models already providing separate
700 loopbacks (clusters and such) are not impacted by this change.
701 - SMPI now adds 16 bytes of header to each message sent, in order to simulate
702 metadata that are added to each MPI message by MPI libraries (tag,
703 src/dest, and communicator information). This may change simulation times
704 for very small message sizes, but should be more realistic.
707 - New routing 'WiFi' that makes it easier to specify a wifi network zone.
708 - New plugins: wifi_energy and link_load. See the associated examples.
709 - New examples: wifi networks, and communication suspend.
712 - LTO is now enabled for Intel/clang compilers.
713 - LTO behavior on GCC can be parameterized using LTO_EXTRA_FLAG in cmake.
714 Setting it to "auto" will use all available cores, while setting it to n will
715 use n cores to speedup link step (usage: cmake -DLTO_EXTRA_FLAG=4).
716 - Remove obsolete runtime option 'contexts/parallel-threshold'.
717 - Runtime option 'tracing/msg/process' renamed to 'tracing/actor'. The old name
718 has been kept for compatibility.
719 - Finally remove obsolete snake_case() aliases for runtime options.
720 - Further improve the documentation.
723 - the on_exit() of each actor is also executed when the simulation deadlocks.
724 - New functions: s4u::Activity:: suspend(), resume() and is_suspended()
725 An example is provided for s4u::Comm but it should work with Exec and Io.
728 - Update proxy apps coverage of new ECP apps: 60+ apps now tested nightly on
729 https://framagit.org/simgrid/SMPI-proxy-apps
730 - MPI/IO: supports names starting with "./"
731 - Fortran: many MPI/IO bindings, support for MPI_UB/LB, C MPI_INT/FLOAT/DOUBLE
733 - smpicc/cxx/ff/f90 now will actually perform definition checks at link time. When
734 building shared libraries, this may cause issues, so environment variable
735 SMPI_NO_UNDEFINED_CHECK can be added to disable this.
736 - most temporary files should now be created in /tmp dir (or equivalent).
737 If this one does not allow execution of code (noexec flag), this may cause issues.
738 Please use another tmp directory (using TMPDIR or equivalent system variable)
742 - A large refactoring is ongoing, but this should be transparent for users so far.
745 - Drop xbt_str_split().
747 C binding and interface:
748 - The return type of the sg_actor_on_exit() callbacks is now 'void'
749 (int value was previously ignored)
750 - Many C functions were renamed to follow a common naming style
751 (sg_object_get_something and sg_object_set_something). As usual, the deprecated
752 names are kept until version 3.30.
753 - Many MSG tests were converted to the new S4U's interface in C, that
754 was extended for that.
756 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
757 (FG: issues on Framagit; GF: issues on GForge; GH: issues on GitHub)
758 - FG#41: Add sg_actor_create C interface
759 - FG#43: xbt::random needs some care
760 - FG#48: The Impossible Did Happen (yet again)
761 - FG#50: Suspending an actor executed at the current timestamp fails
762 - FG#52: Zero-seconds timeout : "That's in the past already"
763 - FG#53: Crash while using ns-3 network model
764 - FG#54: How to suspend a comm?
765 - FG!22: Stochastic Profiles
766 - FG!24: Documentation and fix for xbt/random
767 - FG!35: Add a modeling hint for parallel links in doc
768 - FG!36: [xbt/random] Read/Write the state of the RNG
769 - FG!42: Link cumulated load plugin
770 - FG!44: Test condition variable wait_until+notify_all
771 - GF#18137: Allow different stack sizes?
772 - GH#128: Parallelization of simulation with --cfg=contexts/nthreads
773 - GH#139: Allow pthread creation in SMPI
774 - GH#336: Packet-level simulation using SMPI?
775 - GH#345: Error in the LMM while migrating a VM
776 - GH#346: [SMPI] error while loading shared libraries: libsimgrid.so
777 - GH#352: pip install / python setup.py install fail to find pybind11
778 - GH!337: Fix link_energy plugin for wifi platforms
779 - GH!339: Add Mailbox set_receiver method to python binding
780 - GH!344: Cast hugepages macros parameters to int64
782 ----------------------------------------------------------------------------
784 SimGrid (3.25) February 2. 2020 (aka 02 02 2020)
786 The Palindrom Day Release.
788 Important user-visible changes:
789 - Improve the Python usability (stability and documentation).
790 - A nasty synchronization bug was ironed out, see also below.
791 - Python's doc was organized as a separate tree, now integrated with C++.
792 - C bindings of S4U were not part of the doc.
793 - The C++ doc was also improved as methods are now split by theme.
794 - Further deprecate MSG: you now have to pass -Denable_msg=ON to cmake.
795 - This is mandatory to use the Java bindings.
796 - OFF by default; The plan is to completely remove MSG by 2020Q4 or 2021Q1.
797 - SimDAG++: Automatic dependencies on S4U activities (experimental)
798 - Some features are already implemented but not all of them
799 - Cannot block an activity until it's scheduled on a resource
800 - No heterogeneous wait_any() that would mix Exec/Comm/Io activities.
801 - See examples/s4u/{io,exec,comm}-dependent for what's already there.
804 - Upgrade documented Java dependency to Java 8 (earlier versions don't work).
805 - Drop support for Viva/Triva (old visualization tools), hence removed
806 TRACE_get_node_types() and TRACE_get_edge_types() functions.
809 - Require pybind11 version 2.4.
810 - Greatly improve locking during context switches with Python.
811 - Declaring Python callbacks to this_actor::on_exit is now working.
812 - No more tests are failing currently, even on win32.
815 - Actor: Merge signals on_migration_start/end into on_host_change
816 - Actor: Rename migrate() into set_host()
817 - Disk: Allow users to get the read and write nominal bandwidth values
818 - Exec: Implement wait_for(timeout)
819 - Io: Implement wait_for(timeout)
822 - Parse errors now raise a simgrid::ParseError that you may want to catch.
825 - In simgrid::kernel::resource::Model, the methods next_occuring_event*() have
826 been renamed to fix a spelling error. As usual, the previous definitions are
827 kept with a deprecation warning. However, to avoid runtime errors, it is now
828 forbidden to override these deprecated methods in a derived class. Please use
829 the new names immediately if you need to override them.
832 - Remove unused parameter 'free_ctn' for xbt_dict_set() and xbt_dict_set_ext().
833 - Drop unused functions for dicts and dynars: xbt_dict_cursor_get_elm,
834 xbt_dict_get, xbt_dict_get_elm, xbt_dict_get_ext, xbt_dict_get_key,
835 xbt_dict_remove, xbt_dict_reset, xbt_dynar_compare, xbt_dynar_dump,
836 xbt_dynar_foreach_ptr, xbt_dynar_free_data, xbt_dynar_free_voidp,
837 xbt_dynar_init, xbt_dynar_insert_at_as, xbt_dynar_merge,
838 xbt_dynar_remove_n_at, xbt_dynar_replace, xbt_dynar_search, xbt_dynar_set.
839 - New module: random, providing classical random numbers generators.
842 - New option : "smpi/auto-shared-malloc-thresh" which sets a value for
843 allocations' size above which they are considered "shared" by default (as if
844 they were performed through SMPI_SHARED_MALLOC macros).
845 Default = 0 = disabled feature.
846 Note : malloc, calloc and free are now overridden by smpicc/cxx by default.
847 This can cause some troubles if codes are already overriding these. If this
848 is the case, defining SMPI_NO_OVERRIDE_MALLOC in the compilation flags can
849 help, but will make this feature unusable.
850 - Input check is now performed much more consistently and outputs precise
851 warnings for each error found
852 - New supported calls : MPI_File_set_view, MPI_File_get_view
853 - MPI I/O now only supports disks, as storage is discontinued.
854 - MPI I/O allows opening files without specifying absolute path
855 - Note : SMPI configuration options are now initialized by smpi_init_options()
856 call, which should be called if SMPI is not being used through smpirun.
858 Fixed bugs (FG#.. -> framagit bugs; FG!.. -> framagit merge requests):
859 - FG#9: Python bindings crashing
860 - FG#39: Missing s4u::Comm::wait_any_for example
861 - FG#42: Add support for ThreadSanitizer (TSan)
862 - FG!19: Removing RngStream
863 - FG!20: A module for RNG calls
864 - FG!21: Choice between ad-hoc and standard distributions implementations
866 - FG!25: Fix link in Mutex doc
867 - FG!26: Fix links in SMPI interface doc
868 - GH#31: [MC] please provide an option to make MPI_Send asynchronous
869 - GH#305: Unscheduled tasks are still excuted
870 - GH#313: smpirun: manual outdated w.r.t. --help
871 - GH#321: [S4U] Get task remaining work ratio
872 - GH#323: Crash when an actor turn off his physical host
873 - GH#335: Missing links on dragonfly example svg
874 - https://lists.gforge.inria.fr/pipermail/simgrid-user/2019-November/004653.html:
875 MPI_Cart_sub was not working properly. Kudos to Jonathan Borne for the report.
877 ----------------------------------------------------------------------------
879 SimGrid (3.24) October 9. 2019
881 The Clean Disk Release.
884 - Introduce a s4u::Disk interface to manage the newly introduced <disk>
885 tag. s4u::Disk is called to supplant s4u::Storage in a near future. It
886 thus becomes the default resource to execute I/O operations. Examples
887 and the file system plugin have been modified to use disks instead of
888 storage elements. Storage can still be used but is doomed to disappear.
889 Users are thus adviced to update their simulators accordingly.
890 - Barrier::wait returns SG_BARRIER_SERIAL_THREAD for (only) one actor
891 for consistency with pthread_barrier_wait()
892 - Host::get_englobing_zone() returns the englobing netzone
893 - Actor::on_destruction is now called in the destructor
894 Actor::on_termination new signal called when the actor terminates
896 - Global signals are now part of the Engine:
897 - on_platform_creation: after config settings, before the XML parsing
898 - on_platform_created: right after the XML parsing
899 - on_time_advance: each time the clock advances
900 - on_simulation_end: after simulation, before cleanups
901 - on_deadlock: as the name implies.
903 - sg_{actor,host,link}_{data,data_set}() now all exist.
904 Use them to attach user data to the object and retrieve it.
907 - Introduce an experimental Wifi model. It sounds reasonable
908 according to the state of the art, but it still has to be properly
909 validated, at least against ns-3 if not against reality.
910 - Improved the usability of ns-3. Several bugs were ironed out.
911 - host_energy: Wattage was expressed as 'idle:oneCore:allCores'.
912 It is now expressed as 'idle:epsilon:allCores' to properly model the
913 consumption of non-whole tasks on mono-core hosts. More info in the doc.
916 - convert a new set of functions to the S4U C interface and move the old MSG
917 versions to legacy (MSG_process_self*, MSG_process_{un}ref, ...)
920 - Fortran bindings for DVFS have been removed.
921 - Add support for MPI_Irsend, MPI_Rsend, MPI_Rsend_init, MPI_Bsend,
922 MPI_Ibsend, MPI_Bsend_init, MPI_Buffer_attach, MPI_Buffer_detach
923 - SMPI can now be selected by cmake's find_module(MPI) with
924 MPI_C_COMPILER, MPI_CXX_COMPILER, MPI_Fortran_COMPILER variables.
925 - Add support for MPI Errhandlers in Comm, File or Win. Default errhandler is now
926 MPI_ERRORS_ARE_FATAL, so codes which were sending warnings may start failing.
927 - trace-call-location can be used with TI traces, and replayed, and is compatible
928 with smpi/comp-adjustment-file.
929 - sleep events are now correctly traced/replayed.
930 - Default for trace-call-location is now to use file names and not full paths.
931 To revert to previous behavior (in case of collision of filenames), option
932 "smpi/trace-call-use-absolute-path" can be set to yes.
935 - Use the included xxHash as an hash implem when C++14 is usable.
936 - Option model-checker/hash was removed. This is always activated now.
937 - New option smpi/buffering controls the MPI buffering in MC mode.
938 - MPI calls now MC_assert() that no MPI_ERR_* code is returned.
939 This is useful to check for MPI compliance.
942 - New section on plugins: how to define a new one, and existing ones.
945 - xbt_mutex_t and xbt_cond_t are now marked as deprecated, a new C interface
946 on S4U is already available to replace them by sg_mutex_t and sg_cond_t.
949 - Introduce the <disk> tag as a replacement of the <storage>, <storage_type>,
950 and <mount> tags. The rationale is finish to decouple what should be handle
951 by SimGrid kernel (i.e., resources and activities) from plugins built in
952 user space (e.g., the file system plugin). This new tag currently accepts
953 only three attributes (id, read_bw, and write_bw). All the other information
954 that was declared with the storage related tags now has to be expressed as
955 properties. An example of platform using this new tag is available at
956 examples/platforms/hosts_with_disks.xml
959 - 'expect signal' can now accept more than one potential signal.
961 Fixed bugs (FG#.. -> framagit bugs; FG!.. -> framagit merge requests):
962 - FG#28: add sg_actor_self (and other wrappers on this_actor methods)
963 - FG#29 and FG#33: provide a new C API to mutexes and condition variables
964 - FG#30: convert MSG_process_{un}ref to sg_actor_{un}ref
965 - FG#31: per-actor data
966 - FG#34: SG_BARRIER_SERIAL_THREAD?
967 - FG#35: model-checker does not like buster-produced binaries
968 - FG!13: MC: complete workaround in the error msg seen on modern systems
969 - FG!15: execute_flops now logs compute
970 - FG!16: Fix the ns-3 bindings when several flows are simultaneously finishing
971 - FG!17: ns-3: unblock the right number of communications + others issues
972 - FG!18: Improving the performance of the ns-3 bindings
973 - GH#189: Energy consumption of parallel tasks
974 - GH#219: Error in the throughput of TCP transfer
975 - GH!330: Minor polishing of English: Configuring_Simgrid
976 - GH!331: Fix a doc error about actors (Tutorial_algorithms)
977 - GH!332: Add '-O0' flag for: cmake -DCMAKE_BUILD_TYPE=Debug
978 - GH!334: Rework energy plugin, again
980 ----------------------------------------------------------------------------
982 SimGrid (3.23.2) July 8. 2019
985 - Nicer introduction page.
986 - Migrate the "Deploy your application" page to the new doc.
987 - Move Java as a subtree of MSG.
990 - Rename simgrid::TimeoutError to simgrid::TimeoutException.
993 - Drop xbt_dynar_sort_strings().
996 - Really fix FG#26: Turning off a link should raise NetworkFailureException
997 - FG#27: Wrong exception thrown to wait_any when link is turned off
998 - GH#328: Java: Canceling multiple tasks in a single vm/host
1000 ----------------------------------------------------------------------------
1002 SimGrid (3.23) June 25. 2019
1004 The Exotic Solstice Release.
1007 - SunOS and Haiku OS support. Because exotic platforms are fun.
1008 - Stop setting random seed with srand48() at initialization.
1009 - Use addr2line as a fallback for stacktraces when backtrace is not available.
1010 - Build option -Denable_documentation is now OFF by default.
1011 - Network model 'NS3' was renamed into 'ns-3'.
1014 - SimGrid can now hopefully be installed with pip.
1017 - wait_any can now be used for asynchronous executions too.
1020 - New log appenders: stdout and stderr. Use stdout for xbt_help.
1021 - Drop xbt_dict_dump.
1024 - 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
1025 - MPI/IO is now supported over the Storage API (no files are written or read, storage is simulated). Supported calls are all synchronous ones.
1026 - MPI interface is now const correct for input parameters
1027 - MPI_Ireduce, MPI_Iallreduce, MPI_Iscan, MPI_Iexscan, MPI_Ireduce_scatter, MPI_Ireduce_scatter_block support
1028 - Fortran bindings for async collectives.
1029 - MPI_Comm_get_name, MPI_Comm_set_name, MPI_Count support.
1032 - Remove option 'model-check/record': Paths are recorded in any cases now.
1033 - Remove option 'model-check/sparse-checkpoint': Checkpoints are now
1034 always sparse. That's an immense gain in memory, and can even be
1035 faster because of cache effects. So there is no need to clutter the
1036 code to allow the user to go for the unefficient mode.
1039 - Remove the lagrange-based models (Reno/Reno2/Vegas). The regular
1040 models proved to be more accurate than these old experiments.
1042 Fixed bugs (FG=FramaGit; GH=GitHub -- Please prefer framagit for new bugs)
1043 - FG#1: Broken link in error messages
1044 - FG#2: missing installation documentation
1045 - FG#3: missing documentation in smpirun
1046 - FG#6: Python bindings not available on PyPI
1047 - FG#7: simple cmake call requires doxygen
1048 - FG#8: make python bindings an optional dependency
1049 - FG#10: Can not use MSG_process_set_data from SMPI any more
1050 - FG#11: Auto-restart actors forget their on_exit behavior
1051 - FG#12: -Denable_lto=OFF doesn't disable LTO
1052 - FG#13: Installs unstripped file 'bin/graphicator'
1053 - FG#14: Installs the empty directory 'doc/simgrid/html'
1054 - FG#15: Setting -Denable_python=OFF doesn't disable the search for pybind11
1055 - FG#17: Dead link in doc (pls_ns3)
1056 - FG#20: 'tesh --help' should return 0
1057 - FG#21: Documentation link on http://simgrid.org/ broken
1058 - FG#22: Debian installation instruction are broken
1059 - FG#26: Turning off a link should raise NetworkFailureException exceptions
1060 - GH#133: Java: a process can run on a VM even if its host is off
1061 - GH#320: Stacktrace: Avoid the backtrace variant of Boost.Stacktrace?
1062 - GH#326: Valgrind-detected error for join() when energy plugin is activated
1064 ----------------------------------------------------------------------------
1066 SimGrid (3.22) April 1. 2019
1068 The Easter Christmas Release (this one is somewhat late).
1071 - We are excited to introduce the SimGrid/S4U interface to your neighborhood
1072 - Not complete yet: asynchronous activities (amongst others) are still missing
1073 - Still ongoing: the interface may change in the future. We need more
1074 testers! Please report any glitches.
1075 - No new project using Java should start now. Please switch to Python.
1078 - Some of the internal cleanups may lead to speed improvements:
1079 - The hard limitation on the amount of simulated actors with
1080 Java+Mac was removed. Now, the available memory is the only limit.
1081 - Our refcounting was tidyied, leading to 10% speedups in some cases.
1082 - We are still working on making our code robust to the actor kills
1083 and hosts' churn. Things are improving, but it's not perfect yet.
1084 - Replaced our own code to display a backtrace (that was forking addr2line)
1085 with the Boost.Stacktrace library.
1086 You won't see your backtraces without this optional dependency.
1087 - Bump cmake dependency to 3.5 (provided by Ubuntu 16.04).
1088 - Stop setting random seed with srand() at initialization.
1091 - In <host> and <peer>, 'availability_file' is now 'speed_file'.
1092 XML file version remains 4.2 since old files are still compatible.
1095 - Process termination which was broken at version 3.21 has been repaired.
1096 - Expose host load plugin: loadInit, getCurrentLoad, getComputedFlops, getAvgLoad
1097 - Hide the examples into examples/deprecated. New users should use Python.
1100 - Drop MSG_process_create_from_stdfunc() from the API.
1101 This C++ function was a pimple in the C API, made necessary at some
1102 point by the Java bindings. This is fixed now.
1103 - Hide the examples into examples/deprecated. New users should use S4U.
1104 - MSG_process_create and MSG_process_attach now crash if the host used
1105 to run this process is off.
1106 - Fix the protype of MSG_process_on_exit()
1107 Now use (int,void*) callbacks instead of (void*,void*) ones.
1108 The implementation was ways too messy to actually work, I guess.
1111 - Change the way SMPI_SAMPLE_* macros work to avoid invalidating cache
1112 too often and provide more accurate timings.
1113 - Add -gdb, -lldb, and -vgdb shortcuts to help debug MPI codes with smpirun
1114 - MPI_Alltoallw support
1115 - Partial MPI nonblocking collectives implementation: MPI_Ibcast, MPI_Ibarrier,
1116 MPI_Iallgather, MPI_Iallgatherv, MPI_Ialltoall, MPI_Ialltoallv, MPI_Igather,
1117 MPI_Igatherv, MPI_Iscatter, MPI_Iscatterv, MPI_Ialltoallw.
1118 - MPI_Request_get_status, MPI_Status_set_cancelled, MPI_Status_set_elements
1120 - Basic implementation of generalized requests (SMPI doesn't
1121 allow MPI_THREAD_MULTIPLE) : MPI_Grequest_complete, MPI_Grequest_start
1124 - Drop sg_cmdline. Please use xbt_cmdline instead.
1125 - Drop the C xbt_os_mutex_t; Use the C++11 std::mutex.
1126 - Drop the C xbt_os_sem_t; Use the C++ xbt::OsSemaphore.
1127 OsSemaphore is implemented in a portable way with C++11 threads.
1128 This should allow much more threads to be created at the same time,
1129 allowing Mac and Java users to simulate many more actors.
1130 - Implement the 'thread' factory with std::thread instead of xbt ones.
1131 It is not possible to set the stack size with threads anymore, but
1132 -fsplit-stack is the way to go nowadays when using threads.
1133 - Drop the xbt_os_thread_t module (now unused)
1134 - Drop xbt_ex_display(), use simgrid::xbt::log_exception() instead.
1135 - Drop xbt_str_join_array().
1136 - Drop cunit, use Catch2 instead.
1139 - Many cleanups in the kernel::activity namespace. This was long
1140 overdue, and shall open the path to many future endeavors.
1143 - #132: Java: a process can not shut down its own host
1144 - #220: S4U: detached send causes exception if sender terminates soon after sending
1145 - #261: Document the parameters of parallel execution's constructor
1146 - #300: [s4u] BarrierPtr is missing
1147 - #314: SMPI args internal cleanup
1148 - #316: Fix a bug related to the CPU utilization of multi-core VM
1149 - #318: Invalid trace file when using option --cfg=tracing/smpi/display-sizes:yes
1150 - #324: S4U: Attempting to create an actor on turned off host segfaults instead of throwing
1151 - #325: Turning off a host has different behavior on sleeping actors and computing actors
1153 ----------------------------------------------------------------------------
1155 SimGrid (3.21) October 3. 2018
1157 The Restarting Documentation (TRD) Release.
1160 - Convert the user manual to Sphinx for improved usability.
1161 Unstable version now hosted on https://simgrid.frama.io/simgrid
1162 Many glitches remain; stay tuned.
1163 - Restrict the Doxygen reference API to the installed header files.
1164 (documenting all internals this way is overkill + doxygen scales badly)
1165 - New tutorial on S4U (highly inspired from the old MSG one, but with
1166 a git repository to fork as a starting point, and a docker image)
1167 - Started but not finished an SMPI tutorial inspired from the JLPC'14 one.
1168 - The Developper manual is still to be converted (not compiled until then)
1169 - Some parts are still missing in this conversion (such as the
1170 platform and deployment sections) while others were blindly converted
1171 and would need more love (such as the configuration flags).
1172 Things will certainly further improve in the future releases.
1175 - Fully reimplement auto_restart mechanism that was utterly broken
1176 (fix #22, #131 and #281 that were all very related)
1177 - Implement semaphores (fix #303 and #291)
1178 - When creating an actor from a function and its parameters,
1179 move-only parameters are not allowed anymore, as it would prevent
1180 the actor to be restartable if its parameters are consumed on run.
1181 - s4u::Io: IOs go asynchronous as activities. New methods in s4u::Storage:
1182 - io_init(sg_size_t, s4u::Io::OpType) to create a READ or WRITE asynchronous
1183 IO operations that can be started, waited for, or canceled as a regular
1185 - read_async(sg_size_t) and write_async(sg_size_t) which are wrappers on
1189 - Rename 'power' and 'power_used' variables into 'speed' and 'speed_used'
1190 - New host variable: 'core_count'
1193 - Remove xbt_os_thread_specific features
1194 - Remove portability wrapper to condition variables
1195 - Remove xbt_os_thread_yield()
1198 - MPICH collective selector now mimics MPICH 3.3b
1199 - OpenMPI collective selector now mimics OpenMPI 3.1.2 (default "tuned" setting)
1200 - MPI_Init(NULL,NULL) is now allowed
1201 - smpi/wtime option now injects time in gettimeofday or clock_gettime calls
1202 - Command-line arguments should now be handled properly in Fortran simulations
1203 - MPI Attributes and related callbacks should work in Fortran
1204 - Apps using C + Fortran should now work
1205 - MPI_* calls now check for non MPI_SUCCESS return values and emit warnings
1206 - Support MPI_Error_String
1209 - Due to an internal bug, Msg.run() must now be your last line.
1210 We hope to fix it in a future release, and we are sorry for the inconvenience.
1213 - #22: Process autorestart seem to only work with CAS01 cpus
1214 - #56: Feature request: dynamic SMPI replay
1215 - #93: simgrid should not eat --help
1216 - #111: How to change the loopback link characteristics?
1217 - #116: Platform cluster radical
1218 - #117: Platform cluster/host order
1219 - #129: Replay_multiple on steroid
1220 - #131: Java : autostart does not work
1221 - #143: Setting a breakpoint at a given time
1222 - #235: Network energy models should be integrated
1223 - #264: Add ptask L07 resource tracing
1224 - #271: Dynamic and manual replay of SMPI traces
1225 - #279: Breakpoints option uses time deltas instead of absolute time
1226 - #281: Daemonized actor no longer daemonized after an auto-restart
1227 - #282: TIT convertor erase traces when using absolute path in the trace list file
1228 - #285: segfault when a s4u actor kills itself with msg process tracing activated
1229 - #286: Pajé traces are not exposing the number of cores
1230 - #287: Command-line parsing should stop when encountering '--'
1231 - #288: MPI_Init(NULL, NULL)
1232 - #289: Improve documentation of Actor::on_destruction and this_actor::on_exit()
1233 - #290: Method to check if a mailbox has a message ready to be consumed
1234 - #291: [s4u] semaphores do not seem available yet
1235 - #294: Alltoall collective implementation of mpich
1236 - #295: Starting a Host as OFF is not supported
1237 - #296: DTD too permissive
1238 - #299: Add a s4u barrier example
1240 ----------------------------------------------------------------------------
1242 SimGrid (3.20) Released June 24. 2018
1244 The proxy snake_case() release.
1247 - The whole API is now using snake_case() instead of mixing it with camelCase.
1248 Compatibility wrappers in place for one year.
1249 - We took the opportunity to increase the consistency of the API.
1250 Please report any remaining glitches.
1251 - New function simgrid::s4u::Host::get_actor_count:
1252 Returns the number of actors running on a specific host.
1255 - SMPI is now tested with ~45 proxy apps from various sources, with none or
1256 only minor patching needed: check https://github.com/simgrid/SMPI-proxy-apps
1257 - Replay: The replay file has been re-written in C++.
1258 - Replay: Tags used for messages sent via MPI_Send / MPI_Recv are now
1259 supported. They are stored in the trace and used when replayed.
1260 - Basic support of MPI_Cancel. Robustness not guaranteed.
1261 - Support of MPI_Win_allocate_shared, MPI_Win_shared_query, MPI_Comm_split_type
1262 (only for MPI_COMM_TYPE_SHARED).
1263 - New option: smpi/privatize-libs, to add external shared libs to be privatized
1264 by SMPI. They will be copied locally and loaded separately by each process.
1265 Example --cfg=smpi/privatize-libs:"libgfortran.so.3;libscalapack.so".
1266 - Tracing: add tracing for MPI_Start, Startall, Testall, Testany
1267 - Interception of getopt, getopt_long and getopt_long_only calls to avoid issues
1268 with internal index optind with multiple processes. Only works if MPI_Init has
1269 already been called.
1270 - Fortran: SMPI builds a mpi.mod file which should allow use of "use mpi"
1271 syntax without preprocessing tricks.
1274 - Change --cfg=tracing/msg/vm to --cfg=tracing/vm as virtual machine
1275 behavior tracing is no longer limited to MSG
1276 - TIT (Time Independent Traces): We finally support tags. Unfortunately,
1277 this means that traces now need to be updated or re-obtained; both Irecv
1278 and Isend lines in your traces have now in total 5 mandatory fields:
1279 <rankid> <command> <to/from rankid> <tag> <size>
1280 To update your traces, it suffices to add a 0 for the tag here.
1281 - TIT now also supports waiting for a distinct request via MPI_Wait.
1282 Wait/Test now wait for a specific request, not just the last one that was
1283 issued. This unfortunately means another update, because we need to
1284 identify which request you want to wait for. We do this via the
1285 triplet (sender, receiver, tag), which needs to be added:
1286 <rankid> <command> <sender> <receiver> <tag>
1287 - Actions are now in lower case (e.g., "allReduce" becomes "allreduce").
1288 New script simgrid_convert_TI_traces.py: upgrade your TI traces.
1291 - The deprecation of MSG is ongoing (but this should not impact you).
1292 Many MSG functions are now simple wrappers on the C API of S4U. If
1293 you wish to convert your code to S4U, find the S4U counterparts of
1294 your MSG calls in src/msg/msg_legacy.cpp.
1295 - MSG can still be used, but won't evolve anymore.
1298 - Allow to run the Link energy plugin from the command line with
1299 --cfg=plugin:link_energy
1300 - Rename Energy plugin into host_energy
1301 - Rename Load plugin into host_load
1304 - Add parameter --cfg=simix/breakpoint to raise a SIGTRAP at given time.
1305 - kill simix::onDeadlock() that was somewhat dupplicating s4u::on_deadlock()
1306 - Improve performance when handling timeouts of simix synchros.
1309 - Config: the C API is now deprecated (will be removed in 3.23), and
1310 the C++ API has been slightly improved.
1313 - Fix several build issues on OSX.
1314 - Move simgrid_config.h to simgrid/config.h (old header still working)
1317 - #143: Setting a breakpoint at a given time
1318 - #150: Inconsistent event names in SMPI replay
1319 - #258: daemonized actors hang after all non-daemonized actors have completed
1320 - #267: Linker error on unit_tmgr
1321 - #269: SMPI: tracing of MPI_Wait/all/any broken
1322 - SMPI: Fix various crashes with combined use of MPI_PROC_NULL and MPI_IGNORE_STATUS
1324 ----------------------------------------------------------------------------
1326 SimGrid (3.19.1) Released March 22 2018
1328 The Fixed ABI Release.
1330 As you may know, we are currently refactoring SimGrid in deep.
1331 Upcoming SimGrid4 will be really different from SimGrid3: modular,
1332 standard and extensible vs. layered, homegrown and rigid. C++ vs. C.
1334 Our goal is to smooth this transition, with backward compatibility
1335 and automatic update paths, while still progressing toward SimGrid4.
1337 SimGrid remains open during works: The last pure SimGrid3 release was
1338 v3.12 while all subsequent versions are usable alpha versions of
1339 SimGrid4: Existing interfaces remain unchanged, but the new S4U
1340 interface is budding and the internals are deeply reorganized.
1342 Since 2015, we work hard to reduce the changes to public APIs. When
1343 we need to rename a public library symbol in S4U, we let your
1344 compiler issue an explicative warning when you use the deprecated
1345 function. These messages remain for four releases, i.e. for one full
1346 year, before turning into an error. Starting with v3.15, your can
1347 also adapt to API changes with the SIMGRID_VERSION macro, that is
1348 defined to 31500 for v3.15, to 31901 for v3.19.1 and so on.
1350 Starting with this v3.19.1, our commitment to reduce the changes to
1351 the public interfaces is extended from the API to the ABI: a program
1352 using only MSG or SimDag and compiled against a given version of
1353 simgrid can probably be used with a later version of SimGrid without
1354 recompilation. We will do our best... but don't expect too much of
1355 it, that's a really difficult goal during such profund refactoring.
1357 The difference between v3.19 and v3.19.1 is that the former was
1358 accidentally breaking the ABI of MSG, while the later is restoring
1361 S4U and kernel APIs will still evolve until SimGrid4, with one-year
1362 deprecation warnings as currently. In fact, cleaning up these
1363 interfaces and converting them to snake_case() is one release goal of
1364 v3.20. But don't worry, we are working to smooth this upgrade path.
1366 In summary, new projects should start with S4U to benefit of the
1367 future, but old MSG projects should still be usable with no change.
1369 ----------------------------------------------------------------------------
1371 SimGrid (3.19) Released March 20 2018
1373 The Moscovitly-cold Spring release.
1375 SMPI user-visible improvements:
1376 - Support of MPI_Type_create_subarray
1377 - Unimplemented MPI calls now abort (instead of issuing a warning)
1378 Some harmless calls around errhandlers still only issue a warning.
1379 - MPI_Sendrecv was behaving badly when MPI_PROC_NULL was sender or receiver.
1380 - Starting MPI ranks (or even MSG/S4U actors) once the simulation started
1381 is now possible (mmap privatization was refactored to this end).
1382 Adding new SMPI instances should also be technically doable now.
1384 SMPI internal cleanups:
1385 - Removed index notion from SMPI -- no more "getPid() - 1"!
1386 In tracing files, actors are called rank-<PROCESS-ID> but these are
1387 NOT the real ranks (tracing several communicators is not supported yet).
1388 - Deprecate smpi_process_index() (will be removed in 3.22)
1389 - Better testing on classical proxy apps, through an external project:
1390 https://github.com/simgrid/SMPI-proxy-apps/
1393 - Use a graphical TOC to make it easier to find the documentation you need
1394 - Revamp the MSG tutorial
1397 - Fix MSG_task_get_remaining_work_ratio(): return 1.0 for unstarted tasks.
1398 - Remove parameter of MSG_process_killall().
1399 Resetting the PID was bogus anyway (several actors could have the same PID).
1402 - Execution->setHost() can be called after start(), to migrate it.
1403 - Comm::test_any() is now implemented.
1404 - s4u::Actor now has onCreation() and onDestruction() signals.
1405 - Install some kernel header files for the users' plugins and more.
1406 Warning, their API is really not stable yet.
1407 include/simgrid/kernel/resource/{Action,Resource,Model}.hpp
1408 include/simgrid/kernel/routing/*Zone.hpp
1411 - SD_task_dependency_add(): remove unused parameters 'name' and 'data'.
1413 Build System and other cleanups:
1414 - Remove unused run-time parameter "tracing/onelink-only".
1415 - SimGrid now works with intel compilers (MC still buggy)
1416 - Remove XBT_LOG_CONNECT, it should be useless nowadays.
1417 - tesh kills subprocesses on timeout (but not on windows)
1420 - Rename FULLDUPLEX into SPLITDUPLEX (old name still accepted)
1423 - #194: Feature request: simgrid::s4u::Comm::test_any()
1424 - #245: migrating an actor does not migrate its execution
1425 - #253: Feature Request: expose clusters as objects
1426 - #254: Something seems wrong with s4u::Actor::kill(aid_t)
1427 - #255: Tesh broken on Windows
1428 - #256: Modernize FindSimGrid.cmake
1429 - #257: Fix (ab)use of CMake install
1431 ----------------------------------------------------------------------------
1433 SimGrid (3.18) Released December 24 2017
1435 The "Ho Ho Ho! SimGrid 4 beta is coming to town" release.
1437 MSG IS NOW DEPRECATED. Please use S4U for new projects.
1438 - Support for MSG should not be removed from SimGrid before 2020,
1439 but future evolutions will be limited to the integration of
1440 user-provided patches.
1443 - s4u::onDeadlock() signal, run before stopping the simulation.
1444 - s4u::Exec: asynchronous executions (abstraction of background
1446 - s4u::Host->getLoad() returns the achieved speed in flops/s
1449 - Link::name() is deprecated and will be removed in v3.21, use
1450 Link::getCname() instead.
1451 - Mailbox::getName() changed to return a std::string, use
1452 Mailbox::getCname() instead to get a char*.
1453 - Storage::getName() changed to return a std::string, use
1454 Storage::getCname() instead to get a char*.
1455 - s4u::allStorages() becomes s4u::getStorageList(whereTo)
1456 to have both allocation and deallocation of the map in user space.
1459 - Forbid the use of MSG_task_get_flops_amount() on parallel tasks:
1460 The amount of flops remaining to do is a vector, not a scalar.
1461 - Introduce MSG_task_get_remaining_work_ratio(), which does what its
1462 name implies on both sequential and parallel tasks.
1463 - Both changes fix GitHub's #223 using PR #237 as a basis.
1464 Thanks Michael Mercier.
1465 - Most examples were converted to S4U and hidden elsewhere at tests.
1466 Rationale: we still want MSG to work; we want newcomers to use S4U.
1469 - LMM stuff moved to its own namespace: simgrid::kernel::lmm.
1470 - Renamed LMM classes (e.g. s_lmm_system_t -> System).
1473 - Switch to the faster dlopen privatization mechanism by default
1474 - Documentation improvments
1477 - Live migration is getting moved to a plugin. Dirty page tracking is
1478 the first part of this plugin. This imply that VM migration is now
1479 only possible if one this function is called:
1480 - C/MSG: MSG_vm_live_migration_plugin_init()
1481 - C/C++: sg_vm_live_migration_plugin_init()
1482 - Java: Msg.liveMigrationInit()
1483 For C and C++, "simgrid/plugins/live_migration.h" also has to be
1487 - Define class simgrid::xbt::Path to manage file names.
1488 - Removed unused functions:
1489 - xbt/file.h: xbt_basename(), xbt_dirname(), xbt_getline()
1490 - xbt/graph.h: xbt_graph_edge_get_length(), xbt_graph_edge_set_length,
1491 xbt_graph_export_graphviz()
1492 - xbt/str.h: xbt_str_join()
1493 - Remove unused datatypes:
1494 - xbt/heap.h: use std::priority_queue or boost::heap instead
1495 - xbt/swag.h: use boost::intrusive::list instead
1498 - New link_energy plugin for the consumption of the links.
1499 - All of the operations on files and storage contents have been
1500 packaged into a plugin (src/plugins/file_system). The current
1501 public interface can be found in
1502 include/simgrid/plugins/file_system.h
1503 To use these functions you now have to initialize the plugin by
1504 calling MSG_storage_file_system_init() just after calling
1505 MSG_init() or sg_storage_file_system_init() just after creating
1509 - Remove the undocumented/untested tag <include>
1512 - Remove viva specific tracing as the tool is no longer maintained
1515 - #248: Kill of finished processes leads to segfault
1516 - #240: xbt_cond_wait_timeout should gracefully return for C apps
1517 - #239: please implement signal s4u::onDeadlock()
1518 - #230: segfaults when exit() without run()
1519 - #225: s4u::Actor::kill() doesn not really kill victims in a join()
1520 - #223: MSG_task_get_flops_amount() not working with parallel tasks
1521 - #222: Actor::kill() doesn't really kill and segfaults
1522 - #221: odd LMM warning when killing an actor
1523 - #120: Memory leak when the processes are forcefully killed
1525 ----------------------------------------------------------------------------
1527 SimGrid (3.17) Released October 8 2017
1529 The Drained Leaks release: (almost) no known leaks despite the tests.
1531 Even very long simulations will preserve your memory: our testsuite
1532 stresses SimGrid for over 45mn on fast machines for a coverage of
1533 over 80%, and there is only one single known leak, of about 4kb.
1537 - Comm.detach(): start and forget about asynchronous emission. A cleanup
1538 handler may be given to free resources if the comm cannot be completed.
1539 - this_actor::send(mailbox) is now mailbox->put()
1540 - New: simgrid::s4u::Comm::wait_all()
1541 - New: Host.execute() for remote executions.
1544 - Unused option network/sender-gap is removed.
1547 - Deprecate MSG_task_isend_with_matching(): This unused feature
1548 really complicates our internals. Will be removed in v3.20.
1551 - Improved context termination. It is now possible to free resources, even
1552 when a process is forcibly killed.
1553 - ContextBoost: add support for Boost versions above 1.61.
1556 - Bring back run-time option --cfg=exception/cutpath to remove exception
1558 - Removed unused functions:
1559 - xbt/str.h: xbt_str_split_str(), xbt_str_subst(), xbt_str_ltrim(),
1560 xbt_str_rtrim(), xbt_str_trim().
1561 - xbt/xbt_os_thread.h: xbt_os_thread_cancel(), xbt_os_thread_detach().
1564 - Removed header files obsolete since SimGrid 3.12:
1565 msg/datatypes.h, msg/msg.h, simdag/datatypes.h, simdag/simdag.h.
1567 - #3: SD_exit should be made optional
1568 - #120: Memory leak when the processes are forcefully killed
1569 - #159: Threading test regression in Actor refcounting
1570 - #170: simgrid::s4u::Comm::wait_any() returns too many comms
1571 - #185: simgrid::s4u::Engine::instance()->shutdown() segfaults
1572 - #186: Actor::killAll() segfaults if some process is blocked on wait()
1573 - #191: VM migration and pstate
1574 - #192: Updating the energy consumptions of all hosts crashes with VMs
1575 - #195: All actors have PID=0 in the logs
1576 - #204: Sometimes segfault with thread contexts and mmap privatization
1577 - #222: Actor::kill() doesn't really kill and segfaults
1578 - #225: Actor::kill() doesn't really kill when victims are doing a join()
1580 ----------------------------------------------------------------------------
1582 SimGrid (3.16) Released June 22. 2017.
1584 The Blooming Spring Release: developments are budding.
1587 - FreeBSD: Disable SMPI mmap privatization, switch automatically to dlopen.
1588 - Mac, BSD: dlopen+thread broken, switch automatically to raw contexts.
1589 - Java JAR file should be finally fully working on Mac OSX too.
1591 XML platforms: Switch to platform v4.1 format.
1592 * This is (mainly) a backward compatible change: v4 are valid v4.1 files
1593 - <zone> can be used as a synonym for the now deprecated <as>
1594 - <zoneRoute> can be used as a synonym for the now deprecated <asroute>
1595 - <bypassZoneRoute> can be used as a synonym for the now deprecated <bypassAsRoute>
1596 - <actor> can be used as a synonym for the now deprecated <process>
1597 - state_file and avail_file periodicity is now easier to express
1598 (check the documentation) the old behavior should still work.
1599 * Storage: not backward compatible, but it seems that nobody ever used it
1600 - Remove attribute 'content_type' of <storage_type>: was never used
1601 - Make attribute 'model' of <storage_type> optional: for future usage
1602 - Remove Bconnection model property: was never (in)validated. Replaced by
1603 the maximum of the read and write bandwidth as a resource constraint.
1606 - New and Backwards Compatibility break:
1607 SD_simulate_with_update (double how_long, xbt_dynar_t changed_tasks_dynar)
1608 When one wants to get the list of tasks whose states have changed during a
1609 simulation round, s/he has to allocate and free a dynar and use it as
1610 argument to this function. The former SD_simulate (double how_long)
1614 - Allow multicore VMs, with the correct sharing (unless you overcommit)
1615 BUG: vCPU overcommitting still leads to buggy sharing, though. WIP.
1618 - New function to update the consumption of all hosts at once.
1619 - Fix the model for multi-core hosts, linear in the amount of busy
1620 cores with an abnormality for pIdle (see paper).
1621 BUG: Still not satisfactory for ptask on mono-cores.
1624 - The netzone are now available from the MSG API.
1625 The old names still work, but are now deprecated.
1628 - New algorithm to privatize globals: dlopen, with dynamic loading tricks
1629 - New option: smpi/keep-temps to not cleanup temp files
1630 - New option: smpi/shared-malloc-blocksize . Relevant only when global shared
1631 mallocs mode is used, allows to change the size of the fake file used
1632 (default 1MB), to potentially limit the number of mappings for large runs.
1633 - Support for sparse privatized malloc with SMPI_PARTIAL_SHARED_MALLOC()
1634 - Fortran ifort and flang compilers support
1635 - New RMA calls supported (experimental):
1636 - MPI_Win_allocate, MPI_Win_create_dynamic, MPI_Win_attach
1637 - MPI_Win_detach, MPI_Win_set_info, MPI_Win_get_info
1638 - MPI_Win_lock_all, MPI_Win_unlock_all, MPI_Win_flush
1639 - MPI_Win_flush_local, MPI_Win_flush_all, MPI_Win_flush_local_all
1640 - MPI_Op_commutative, MPI_Fetch_and_Op, MPI_Compare_and_swap
1641 - MPI_Rput, MPI_Rget, MPI_Raccumulate, MPI_Rget_accumulate
1644 - New: this_actor::isMaestro() returns whether we are in kernel mode.
1645 - Behind the scene, ActivityImpl are now automatically refcounted.
1646 Removing this nasty bottleneck will greatly simplify our internals.
1649 - Replay: New function xbt_replay_action_get():
1650 Retrieve the function previously associated to an event type.
1651 - DROPPED FUNCTION: xbt_str_varsubst()
1652 - DROPPED MODULE: strbuff. We don't need it anymore.
1653 - DROPPED MODULE: matrix. We don't need it anymore.
1654 - DROPPED MODULE: lib. We don't need it anymore.
1656 -- Thu Jun 22 22:48:12 CEST 2017 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1658 SimGrid (3.15) Released March 22. 2017
1660 The Spring Release: continuous integration servers become green
1661 We fixed even the transient bugs on all target architectures:
1662 Linux (CentOS, Debian, Ubuntu, Fedora), Mac OSX (Mavericks, El Capitan)
1663 Windows, FreeBSD, NetBSD.
1665 - Rename NetCards to NetPoints.
1666 This was intended to help NS3 users, but that's not a netcard.
1667 That's a point in the routing algorithm, let's avoid wrong simplifications.
1670 - New: MSG_process_yield(). Stop and yield to other processes.
1671 - New: MSG_process_daemon(). Daemon processes are automatically killed
1672 when the last non-daemon process terminates
1673 - New: MSG_process_ref/unref(). Fiddle with the process refcounting.
1674 - Renamed MSG_energy_plugin_init() -> MSG_host_energy_plugin_init()
1675 to make room for the upcoming network energy plugin.
1676 - Drop MSG_host_get_current_power_peak: duplicates MSG_host_get_speed
1679 - Ensure that an actor can kill itself with Process::exit()
1680 - Kill the obscure NativeException. Nobody want to survive the issues
1681 it denotes, so use JniException that is a RuntimeException (not to
1682 be caught explicitly).
1683 - Partial bug fix in initialization. SimGrid flags on command line were
1684 consumed at C level but stayed in the original Java String[] args.
1685 This could mess users' args[i] if SG flags were not put at the end of
1687 The SimGrid flags are now removed from the Java arguments. However,
1688 the number of arguments REMAINS UNCHANGED. It is then UNSAFE to test
1689 if args.length is greater than the number of YOUR OWN ARGUMENTS.
1690 It might be if you have --log or --cfg flags in the command line.
1691 - Fix numerous memleaks all around the place. In particular, around VMs.
1695 - s4u::onPlatformCreated: right before the simulation starts
1696 - s4u::onSimulationEnd: right after the main simulation loop
1697 - s4u::onTimeAdvance: right after a clock change (time is discrete)
1698 - s4u::Host::onSpeedChange: when the pstate is changed, or when an
1699 event from the availability_file changes the avail speed.
1700 - Links are now usable from s4u
1701 - New: Engine::hostList() and Engine::hostCount(). Still clumsy.
1702 - New: Actor::suspend(), Actor::resume(), and Actor::migrate(new_host)
1703 - New examples: The conversion of MSG examples to S4U has begun
1704 - Actors: create, kill, migration, and suspend
1705 - Applications: master-worker and token-ring
1706 - Action replay: communications and storage
1707 - Drop Host::getPstateSpeedCurrent() which duplicates Host::speed()
1710 - Backwards Compatibility breaks
1711 - The SD_route_get_list and SD_route_get_size functions have been removed.
1712 They are replaced by the unique
1713 void sg_host_route(sg_host_t src, sg_host_t dst, xbt_dynar_t links)
1714 The route from src to dst is built in the links dynar whose size can
1715 be obtained with xbt_dynar_length.
1716 - The SD_route_bandwidth and SD_route_latency functions have been replaced by
1717 sg_host_route_bandwidth and sg_host_route_latency.
1718 Macros ensure the backwards compatibility, but you should fix your code
1721 - Major C++ rewrite ongoing (SMPI used to be C compiled in C++).
1722 This can break codes using SMPI internals (from private.h instead of the public smpi.h).
1723 - Bump our claim of support from MPI 1.1 to MPI 2.2.
1724 We don't support 100% of it, but it should be enough. Contact us if not.
1725 - MPI_Win_lock/unlock, MPI_Get_accumulate support added (as for all RMA, implementation is
1726 naive and probably inaccurate)
1727 - New algorithm for SMPI_SHARED_MALLOC: global, where all blocks are
1728 mapped onto a unique small file using some system magic.
1729 - Bugfix: smpirun was sometimes misusing hostfile when wrongly terminated
1730 - Fortran: cleanups, fixes, support of user-added operations
1731 - RMA: MPI_Accumulate are applied in correct order.
1732 - RMA: MPI_Win_{complete/post} shouldn't miss messages anymore.
1733 - Better support for MPI_IN_PLACE
1734 - Support for MPI_Win attrs and keyvals.
1735 - Support MPI_Comm_group_create, MPI_Type_size_x
1736 - MPI ops should be properly applied to all allowed types
1737 - Replace implementation of MPI_Bcast "scatter followed by rdb allgather"
1738 algorithm by a non failing one from mpich.
1741 - Kill the fifo data container: we don't use it anymore.
1744 - A <cluster> can now be created with different speed values to represent pstates.
1745 see examples/platforms/energy_cluster.xml for an example.
1747 SimGrid (3.14.159) Released December 28. 2016
1749 The previous release was only a crude approximation of a Pi release;
1750 this one should be a bit better.
1752 - Revert a last minute change that broke on Mac OSX.
1753 - Fix the changelog and NEWS files.
1754 - Improve the documentation, in particular of the routing module.
1755 - Integrate some patches flying around in Debian.
1757 SimGrid (3.14) Released December 24. 2016
1760 * The whole documentation was reworked and reorganized. There is
1761 still much room for improvement here, but we're on it.
1764 * We now need python3 for our testing infrastructure.
1765 * Model checking needs libevent
1768 * Now works on FreeBSD
1771 * Privatization now works on FreeBSD
1773 * Privatization is now activated by default in smpirun
1774 You can turn it off with -no-privatize if something goes wrong.
1776 * Call-location tracing for SMPI.
1777 You can add the exact location (filename / linenumber) of an MPI call to
1778 your trace files and slow down or speed up the simulation between two
1779 consecutive calls by using an adjustment file (see the documentation).
1781 * Fixed computation of timings for MPI_Send, MPI_Recv & possibly also others
1782 We've found a bug that prevented SMPI to account for MPI_Send, MPI_Recv
1783 and others (in some cases) in a correct way. That is, the smpi/os, smpi/or
1784 values were ignored in some cases. The timings of these functions can now
1785 be significantly different.
1787 * smpi/cpu-threshold:-1 should become smpi/simulate-computation:no
1788 smpi/running-power is renamed to smpi/host-speed
1790 * smpi/grow-injected-times option to enable or disable multiplication of the
1791 timings injected in MPI_Iprobe, or MPI_Test. Enabled by default, which can
1792 make simulation less precise (but also much faster).
1794 * smpirun script should be (much) faster for large deployments.
1796 * SMPI tracing: fixed issue with poor matching of send/receives.
1798 * Replay: Fix broken waitall
1800 New functions and features
1801 * MSG_parallel_task_execute_with_timeout, to timeout computations.
1803 Dropped / renamed functions and features
1804 * msg_mailbox_t and associated functions. Use s4u::Mailbox instead.
1805 - MSG_mailbox_is_empty() -> Mailbox::empty()
1806 - MSG_mailbox_front() -> Mailbox::front()
1807 - MSG_mailbox_get_by_alias() -> simgrid::s4u::Mailbox::byName(name)
1808 - MSG_mailbox_get_task_ext() -> MSG_task_receive_ext()
1809 - MSG_mailbox_get_task_ext_bounded -> MSG_task_receive_ext_bounded
1810 - MSG_host_(get/set)_params -> MSG_vm_(get/set)_params
1811 * Don't pass the free_f parameter to property related functions:
1812 - MSG_host_set_property_value()
1813 - MSG_as_router_set_property_value()
1814 - MSG_storage_set_property_value()
1815 * VM properties. Since msg_vm_t are msg_host_t, just use
1816 MSG_host_get_property_value() and friends
1817 * VM I/O related things:
1818 - Ignored parameter of vm_create: core_nb, disk_path and disk_size.
1819 - Unimplemented save/restore methods
1820 * MSG_as_router_get_property_value() was redundant with
1821 MSG_environment_as_get_property_value().
1822 - Removed MSG_as_router_*propert*() functions
1823 - Added MSG_environment_as_set_property_value() for consistency
1824 * xbt heterogeneous dictionaries (created with xbt_dict_new()).
1825 Well, they are still there for now, but deprecated with a warning.
1826 Please switch to xbt_dict_new_homogeneous() before this is removed
1828 * Task affinity. Its intended behavior (that was very badly tested
1829 and probably not really working) was deceiving what most users
1830 would have hoped here.
1831 * xbt_os_sem_get_value: unused internally, deprecated on OS X El Capitan
1832 * Option network/coordinates is now useless and should be dropped.
1835 * Added option storage/max_file_descriptors to allow more than 1024 files opened
1838 * Added option maxmin/concurrency_limit to allow more than 100 processes per host
1839 * Added Dragonfly topology support
1842 * Add Exa- and Peta- units such as EiB, EB, Eib, Eb for size, and
1843 EiBps, EBps, Eibps, Ebps for bandwidth.
1844 They may become useful to some lucky ones.
1847 * New functions: msg.Comm.waitAll() and msg.Comm.waitAny()
1848 * ex/app_tokenring: new example, very similar to the MSG Token Ring
1849 * ex/async_waitAll: new example, on asynchronous communications
1852 * Memory usage should be decreased for simulations with a large number
1853 of processes. This also helps for SMPI.
1855 SimGrid (3.13) stable; urgency=low
1857 The Half Release, a.k.a. the Zealous Easter Trim.
1859 - We removed half of the lines, that were mostly experimental cruft.
1860 v3.12 lasted 286000 lines of code, v3.13 is only 142000 lines
1861 (not counting blanks and comments -- according to openhub.net)
1862 - The internals are now compiled in C++ (and will soon be clean C++)
1863 - We removed 75 klines of XML, 12 klines of Java, 5 klines of cmake,
1864 59 klines of C, etc. We added only 29 klines of C++ in replacement.
1866 * Backwards Compatibility breaks
1867 - Removed Lua simulation bindings (switch to C or Java for that).
1868 Lua can still be used to describe platforms
1869 - Removed Java kernel plug-ins.
1870 Will be reintroduced after the ongoing major internals reorg.
1872 - the following functions were removed.
1873 They were too specific and should be reimplemented in a generic
1874 way, with filter function.
1875 - MSG_task_listen_from_host
1876 - MSG_mailbox_get_count_host_waiting_tasks
1877 - MSG_mailbox_put_with_timeout was removed.
1878 Please use MSG_task_send_with_timeout instead.
1880 - the SD_application_reinit function was removed. It has been a noop for a while.
1881 - The ACCESS_MODE of SD_workstation has been removed. This feature was not really usable and should soon be
1882 replaced by a more flexible mechanism.
1883 - The following functions thus do not exist anymore
1884 - SD_workstation_get_access_mode
1885 - SD_workstation_set_access_mode
1886 - SD_workstation_get_current_task
1887 - Basic estimation functions have been removed but can easily be replaced
1888 - SD_route_get_communication_time => SG_route_get_latency() + amount / SD_route_get_bandwidth()
1889 - SD_workstation_get_computation_time => amount / sg_host_speed()
1891 - VM.setBound(int load) is now VM.setBound(double bound) to meet the MSG semantics.
1892 Use VM.getSpeed()*load/100 for the legacy behavior.
1894 - option enable_tracing was removed. It was not doing anything for a while.
1895 - In the ModelChecker:
1896 - the model-checker now ptraces the model-checked process which means
1897 you cannot use a debugger on the latter anymore (we might make this
1898 optional in the feature);
1899 - removed soft-dirty page tracking;
1900 - remove model-checked side snapshot management,
1901 MC_snapshot() and MC_compare_snapshot();
1902 - keep the MC_cut() function as a stub (it was not really working
1903 in the previous release).
1906 * All options are consistently in kebab-case. Old names are kept as alias.
1909 * Switch to platform v4 format.
1910 - Rename from 'power' to 'speed' the attributes describing the amount of
1911 flops that a <host>, <peer>, <cluster> or <cabinet> can deliver per second.
1912 - In <trace_connect>, attribute kind="POWER" is now kind="SPEED".
1913 - In <host> and <link>, attributes availability and state are gone.
1914 It was redundant with state and availability traces, and with peak values.
1915 - In <cluster>, attributes availability_file and state_file are gone.
1916 It was too complex and unused.
1917 - Kill <gpu>. Was not doing anything.
1918 - The DOCTYPE points to the right URL:
1919 http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd
1920 (the file at this address now documents the changelog since its v1)
1921 - A warning is emitted for unit-less values (they are still accepted).
1922 - speed. Default: 'f' or 'flops'. Also defined:
1923 'Yf', 'Zf', 'Ef', 'Pf', 'Tf', 'Gf', 'Mf', 'kf'
1924 'yottaflops', 'zettaflops', 'exaflops', 'petaflops', 'teraflops', 'gigaflops', 'megaflops', 'kiloflops'
1925 - bandwidth. Default: 'Bps' bytes per second (or 'bps' for bits but 1 Bps = 8 bps)
1926 Also defined in bytes: 'TiBps', 'GiBps', 'MiBps', 'KiBps', 'TBps', 'GBps', 'MBps', 'kBps', 'Bps'
1927 And the same in bits: 'Tibps', 'Gibps', 'Mibps', 'Kibps', 'Tbps', 'Gbps', 'Mbps', 'kbps', 'bps'
1928 - latency. Default: 's' second. Also defined:
1929 'w' week, 'd' day, 'h' hour, 'm' minute, 'ms' millisecond, 'us' microsecond, 'ns' nanosecond, 'ps' picosecond
1931 * bin/simgrid_update_xml can upgrade your files automatically (won't convert unit-less values)
1932 tools/sg_xml_unit_converter.py may help (but it's just a warning and will probably ever be).
1935 * s4u::Host is now the preferred public interface to the Host features.
1936 sg_host_* functions are C bindings to the exact same behavior
1937 MSG_host_* and SD_workstation_* are #define to the sg_host_* ones
1940 * The examples were completely reorganized (in C and Java), for your browsing pleasure.
1941 * Kill all deprecated functions (the ones you had when declaring MSG_DEPRECATED).
1942 They were deprecated since a few years, and probably did not even compile anymore.
1945 * The API has been profoundly modified to directly use the core objects instead of redefining its own.
1946 SD_Workstation_t and SD_link_t are now sg_host_t and sg_link_t respectively.
1947 Some functions have also been renamed for consistency. Backward compatibility is maintained, but users are
1948 encouraged to update their codes. A list of the modified functions can be found at the end of
1949 include/simgrid/simdag.h
1952 * simgrid::simix::kernelImmediate() is the closure callback. It ensures that
1953 the lambda or closure passed as a parameter will run in kernel mode.
1954 All the callback functions should be rewritten to that interface at some point.
1957 * Reorganizing and cleaning the internals all around the place.
1960 * Remove old default barrier/bcast buggy algorithms (see #18407)
1961 * Various bug fixes to handle more codes
1962 * Remove the need for the --foreground option of smpirun (it is still
1963 accepted for backward compatibility).
1966 * Kill the setset data container: MC don't use it anymore.
1967 * Kill the queue data container: it made more sense with GRAS.
1968 * Kill the xbt_peer_t data type: it's useless without GRAS.
1969 * Kill rm_cb feature of config sets: it was never useful.
1970 * Kill graphxml parsing feature. It was not used.
1971 * Kill the deprecated code protected by XBT_USE_DEPRECATED
1973 - xbt_dynar_sort_strings(), when the content is char*
1974 - xbt_str_parse_int / xbt_str_parse_double, wrapping strtol/strtod
1975 They throw exceptions on invalid input;
1976 * C++ support for declaring CLI flags (simgrid::config::Flag);
1977 * class for abstracting different signal backends (simgrid::xbt::signal).
1978 with no external dependencies (we need very simple signals).
1981 * refactoring and cleanup of the code;
1982 * ongoing process to cleanly separate the model-checking algorithms
1983 from the code model-checking support.
1985 -- Wed Apr 27 21:00:53 CEST 2016 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1987 SimGrid (3.12) stable; urgency=low
1989 The Facelift Release.
1992 * Require g++ v4.7 at least to not speak prehistorical C++.
1993 * Require Boost 1.48 (for signal2 component).
1994 * Java must be version 7 at least when activated.
1995 * Builds on Windows again (including Java bindings).
1996 * Tracing is now always enabled (no way to turn it out)
1997 * Remove GTNetS. It was not working anyway.
1998 * Various cleanups in the cmake scripts.
1999 * Move headers around to sort them out on installed systems:
2000 - instr/instr.h -> simgrid/instr.h
2001 - instr/jedule/* -> simgrid/jedule
2002 - simdag/datatypes.h was removed
2003 - simdag/simdag.h -> simgrid/simdag.h
2004 - msg/datatypes.h was removed
2005 - msg/msg.h -> simgrid/msg.h
2008 * Interface improvement:
2009 - Rename MSG_host_is_avail(h) to MSG_host_is_on(h)
2010 - Sanitize the interface in MSG_task_ module:
2011 - Merge two functions that were close enough but misleading:
2012 set_compute_duration(t) -> set_flops_amount(t)
2013 get_remaining_computation(t) -> get_flops_amount(t)
2014 - set_data_size(t) -> set_bytes_amount(t)
2015 get_data_size(t) -> get_bytes_amount(t)
2016 - Massive cleanups in the functions related to the energy
2017 - MSG_host_get_pstate_number() -> MSG_host_get_nb_pstates()
2018 - New: MSG_host_get_pstate()
2020 - msg/energy/onoff: switching hosts on and off
2022 * Interface improvement:
2023 - Rename Host.isAvail() to Host.isOn()
2024 - Rename Process.currentProcess() to Process.getCurrentProcess()
2025 - Rename Task.setDataSize() to Task.setBytesAmount()
2026 - Merge Task.getRemainingDuration() and Task.getComputeDuration() into Task.getFlopsAmount()
2028 - #18874: Actually allows the GC to reclaim tasks
2032 - SIMIX_process_throw: raises an exception in a remote process
2033 * Refactoring: Separate sub-modules
2034 - libsmx: the public interface, as libc in a real system
2035 - popping: the strange dance that converts a user request into a kernel handling
2036 - smx_context_*: the virtualization mechanisms that embed the user code
2037 - smx_*: the handling of each simcalls
2038 * Interface cleanup:
2039 - simcall_host_set_power_peak_at -> simcall_host_set_pstate
2040 * Rename smx_action_t into smx_synchro_t, making explicit that these
2041 things are used to synchronize processes with their environment.
2042 For example, a communication is a sort of synchronization involving
2043 the communicating processes (that may block until the exchange) and
2044 the platform. The same can be said from computations, etc.
2046 - #18888: segfault when a process ends before its kill_time
2050 - 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.
2051 - MPI_Keyval*, MPI_Attr* functions, as well as MPI_Comm_attr*, MPI_Type_attr* variants (C only, no Fortran support yet)
2052 - MPI_Type_set_name, MPI_Type_get_name
2053 - MPI_*_c2f and MPI_*_f2c functions
2054 - MPI_Info_* functions (beware, get_nthkey may not follow the insertion order)
2055 - MPI_Pack, MPI_Unpack and MPI_Pack_size functions
2056 - Activate a lot of new tests from the mpich 3 testsuite
2058 - Constant times can be injected inside MPI_Wtime and MPI_Test through options smpi/wtime and smpi/test
2059 - InfiniBand network model added: Based on the works of Jerome Vienne
2060 http://mescal.imag.fr/membres/jean-marc.vincent/index.html/PhD/Vienne.pdf
2061 - When smpi/display_timing is set, also display global simulation time and application times
2062 - Have smpirun, smpicc and friends display the SimGrid git hash version on --git-version
2063 * Collective communications
2064 - 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
2065 - 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/).
2066 - Support for Rabenseifner Reduce/Allreduce algorithms (https://fs.hlrs.de/projects/par/mpi//myreduce.html)
2068 - Replay now uses algorithms from wanted collective selector
2069 - Replay can be used with SMP-aware algorithms
2070 - Memory occupation of replay should now be contained (temporary buffers allocated in collective algorithms should be shared between processes)
2071 - 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.
2073 - [#17799]: have mpi_group_range_incl and mpi_group_range_excl better test some corner cases
2074 - Correctly use loopback on fat-tree clusters
2075 - Asynchronous small messages shouldn't trigger deadlocks anymore
2076 * Energy/DVFS cleanup and improvement
2077 - smpi_set_host_power_peak_at() -> smpi_set_host_pstate()
2078 - new: smpi_get_host_pstate()
2081 - "Full" network optimization flag was broken since Surf++
2082 - Better handling of precision flags in maxmin
2083 - Fix bug causing sometimes "Impossible" errors
2084 - Properly pass cluster properties to included hosts
2085 * Improvement of the Energy plugin.
2086 - Always update the consumption before returning that value
2087 - New property: watt_off to denote the dissipation when the host is off
2088 - New functions getWattMinAt and getWattMaxAt to retrieve the
2089 dissipation of pstates that we are not currently at.
2090 * Java: class NetworkLink renamed to Link
2091 * New function: simcall_process_get_kill_time()
2092 * Massive rename s/workstation/host/
2093 - That's intrusive, but that's good for the project consistency. Sorry.
2094 - Change config option "workstation/model" into "host/model"
2097 - Add a xbt_heap_update function, to avoid costly xbt_heap_remove+xbt_heap_insert use
2098 - Add a xbt wrapper for simcall_mutex_trylock (asked in [#17878])
2099 - Add two new log appenders: rollfile and splitfile. Patch by Fabien Chaix.
2100 - xbt_dirname and xbt_basename for non-POSIX systems
2102 * The model checker now runs as a separate process.
2103 * The model checker runs must now be launched with the new simgrid-mc program.
2104 * Record/Replay: the MC can display a textual representation of a path in the
2105 execution graph. It can then be replayed outside of the model checker.
2107 -- Mon Oct 12 06:02:41 CEST 2015 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2109 SimGrid (3.11) stable; urgency=low
2114 * Normalizing pointers addresses tool for better diff between logs
2117 * Add cloud examples using new VMs
2118 - examples/msg/cloud/two_tasks_vm.tesh
2119 - examples/msg/cloud/simple_vm.tesh
2120 - examples/java/cloud/cloud.tesh
2121 - examples/java/cloud/migration/migration.tesh
2122 * Add java surf examples:
2123 - examples/java/surfPlugin/surf_plugin.tesh
2124 - examples/java/reservationSurfPlugin/reservation_surf_plugin.tes
2125 - examples/java/surfCpuModel/surf_cpu_model.tesh
2126 * Add SMPI+MSG example:
2127 - examples/smpi/smpi_msg_masterslave/
2132 - msg task destroy cancel test
2133 - msg_host on/off test
2134 * Move all tests in testsuite to teshsuite (adding tesh files)
2135 * Restructure teshsuites
2136 - one folder for each kind of test
2137 * Restructure AddTests.cmake
2139 - structure the order of tests (with sections)
2142 * Add virtual machine
2143 - creation of a VM on a PM
2144 - migration of a VM from a PM to another PM
2146 - MSG_process_join(msg_process_t process, double timeout)
2147 - msg_bar_t MSG_barrier_init(unsigned int count)
2148 - int MSG_barrier_wait(msg_bar_t barrier)
2149 - void MSG_barrier_destroy(msg_bar_t barrier)
2150 - msg_as_t MSG_environment_as_get_by_name(const char * name)
2151 * New option "msg/debug_multiple_use" to help debugging when a task is used
2154 - Improvements and finalization of MSG_storage, MSG_file APIs and their
2156 - Increase code coverage in test suites
2160 * Protect context stacks against stack overflow. The number of protected memory
2161 pages allocated on the top of each stack (1 by default) can be configured
2162 with the new command line option --cfg=contexts/guard_size:<value>.
2163 * Simcalls are now generated by a python script that
2164 - generates files included by SimGrid
2165 - checks that all the functions exist, and proposes prototypes
2167 - remove sem_destroy, file_set_data, comm_destroy, vm_set_state,
2168 host_set_data, host_get_data
2170 - simcall_process_join(smx_process_t process, double timeout)
2171 * Fix bug where sleeping processing could not be suspended.
2174 * Translate surf models from C to C++
2175 - Generic classes for all models: Model, Resource, Action
2176 - A generic interface for each kind of model (CPU, Network, Storage
2177 Workstation, WorkstationVM)
2179 * Translate surf routings from C to C++
2180 * Add callbacks using sigc++ or boost::signals2
2181 - Add callback functions for resource creation/destruction
2182 - Add callback functions for action state change
2183 - Handle Energy as a plugin
2184 * Replace swag by boost::intrusive
2185 * Add new routing models for clusters. For documentation, see
2186 http://simgrid.gforge.inria.fr/simgrid/latest/doc/platform.html#pf_cluster
2187 - tori, with topology="TORUS" and topo_parameters="ndim1,ndim2,...,ndimn"
2188 parameters for cluster tag
2189 - Fat trees, with topology="FAT_TREE" and
2190 topo_parameters="h;m1,...,mh;w1,...,wh;p1,...,ph" parameters for cluster tag
2191 - see examples/platforms/torus_cluster.xml and
2192 examples/platforms/fat_tree_cluster.xml
2193 * More documentation
2196 * Hostfiles support host:nb_processes construct to deploy several processes on
2198 * Collective communication algorithms should not crash if used with
2199 improper number of nodes and report the error.
2200 * SMPI now partially supports MPI_Topologies: MPI_Cart_create, MPI_Cart_shift,
2201 MPI_Cart_rank, MPI_Cart_get, MPI_Cart_coords, MPI_Cartdim_get,
2202 MPI_Dims_create, MPI_Cart_sub are supported.
2203 * New interface to use SMPI programmatically (still depends on MSG for
2204 some parts, see examples/smpi/smpi_msg_masterslave):
2205 - SMPI_app_instance_register(const char *name, xbt_main_func_t code,
2209 * Global variables privatization in MPI executables is now performed at runtime
2210 with the option smpi/privatize_global_variables (default:no).
2211 Limitations: Linux/BSD only, with mmap enabled. Global variables inside
2212 dynamic libraries loaded by the application are not privatized (static
2213 linking with these libraries is advised in this case)
2216 * Options defined in XML work correctly now.
2219 * New cmake option, enable_lib_in_jar, to control whether native libraries are
2220 copied into simgrid.jar or not (ON by default). Use this option if you want
2221 to reduce the size of the installed simgrid.jar, *and* the native libraries
2222 are kept installed elsewhere.
2223 * Surf binding with SWIG (code generated in maintainer mode only):
2224 - plugin to handle callbacks
2225 - CPU model only for the moment
2228 * Supernovae build mode is definitively removed. It was used to improve
2229 inlining and inter-module optimizations. It is nowadays superseded by
2230 link-time optimizations commonly available in compilers.
2231 * Update ns-3 find lib. Bindings for ns-3 should work again now.
2232 * Add boost dependency for surf++
2233 * Add new macro for tests
2234 - ADD_TESH(name <tesh_args>)
2235 - ADD_TESH_FACTORIES(name "thread;ucontext;raw" <tesh_args>)
2239 - xbt_bar_t XBT_barrier_init(unsigned int count)
2240 - int XBT_barrier_wait(xbt_bar_t barrier)
2241 - void XBT_barrier_destroy(xbt_bar_t barrier)
2242 * Make the xbt_os_time module public
2244 -- Sat May 31 22:39:38 CEST 2014 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2246 SimGrid (3.10) stable; urgency=low
2248 The Clean Diaper Release, a.k.a. SimGrid is leak-free.
2251 * Reintegrate Java to the main archive as desynchronizing these
2252 package is not acceptable anymore (Java is now considered stable)
2253 * Add explicit synchronization facilities through semaphores
2254 * Bug fix: Task.setDataSize() only changed the C world, not the value
2255 cached in the Java world
2258 * Dramatically change the way files are handled. API and internals changed, but
2259 this part of MSG was not considered as production grade either.
2260 * Add explicit synchronization facilities through semaphores
2261 * Add a new function MSG_host_get_process_list()
2262 * Preliminary DVFS support (see examples/msg/energy/ for details)
2265 * SMPI is now included directly in the libsimgrid as the windows
2266 linker doesn't force us on splitting it anymore.
2267 * Improvements of the SMPI replay tool:
2268 - Most of the collective communications are now rooted in the same process as
2269 in the original application.
2270 - Traces now rely on the same MPI data type as the application (MPI_BYTE was
2271 used until now). Multiple data types can now be used in a trace.
2272 - The replay tool now supports traces produce either by TAU or a modified
2274 - Bug Fix: the compute part of the reduce action is now taken into account.
2275 - Gatherv collective is now supported
2276 - SimGrid (SMPI for now) can generate replay traces as well. Option -trace-ti
2277 of smpirun outputs time independent traces for the current run. One file
2278 is created per process. If too many processes are simulated, this behavior
2279 can be changed to one file for all processes by using the
2280 tracing/smpi/format/ti_one_file flag
2281 * smpirun generates the host file if needed (with given host count and platform)
2282 * Integration of more than 100 STAR-MPI, MPICH, OpenMPI collective algorithms
2283 - allows to select one in particular with --cfg=smpi/coll_name:algorithm
2284 - allows to use the decision logic of OpenMPI(1.7) or MPICH(3.0.4) by setting
2285 --cfg=smpi/coll_selector:(mpich/ompi)
2286 * Support for new functions: MPI_Issend, MPI_Ssend, Commutative operations in
2288 * Add a --cfg:tracing/smpi/internals option, to trace internal communications
2289 happening inside a collective SMPI call.
2290 * Fix the behavior of complex data types handling.
2291 * Make MPI_Wtime another synchronization point to take computations into
2293 * Replace MPICH-1 test suite by the one from MPICH 3.0.4. Can be built using
2294 enable_smpi_MPICH3_testsuite flag in cmake. Run with ctest.
2295 * Add all missing Fortran bindings, SMPI should work with Fortran 90
2296 (no privatization of global variables yet)
2297 * Preliminary DVFS support (see examples/smpi/energy/ for details)
2300 * Verification of liveness properties is now available for SMPI applications
2301 (in addition to MSG applications)
2302 * Bugged examples using SMPI in examples/smpi/mc/
2303 * Add --cfg=model-check/visited option. Allows the verification of infinite
2304 programs. Detection of loops in the execution thanks to the system state
2305 comparison and reduction of the state space to explore. Can be combined with
2306 DPOR for safety properties.
2309 * Allow to change SimGrid configuration (see --help) within the code
2310 thanks to SD_config() as it can be done in MSG.
2311 * Add a new function SD_task_set_amount() upon user request.
2314 * Handle units for values (10ms, 10kiloflops, 10Bps, 1GB, ...)
2315 * Remove rule based routing (no more PCRE dependency)
2316 * Add a limiter_link option to cluster tag, to specify a maximum reachable
2317 bandwidth in fullduplex mode when it is less than twice the nominal bandwidth.
2318 * Add a loopback_bw and loopback_lat options to cluster tag.
2319 * Fix the peer tag that could not be mixed with other AS within a Vivaldi
2320 routing. Now peers are encapsulated in an AS and have their own private
2321 router but this is transparent.
2324 * Our own implementation of getline is renamed xbt_getline, and gets
2325 used even if the OS provide a getline(). This should reduce the
2326 configuration complexity by using the same code on all platforms.
2327 * New type: xbt_cfg_elm_boolean.
2328 * Allow to use yes/no for boolean configuration options in the command line.
2329 * Allow to disable SimGrid cleanups at exit from command line option.
2330 There are situations where one may want a simulation to end with an exit.
2331 Unfortunately, calling exit may cause SimGrid to segfault, which is quite
2332 annoying when scripting around the simulator. Adding a
2333 --cfg=clean_atexit:no allows to circumvent this issue.
2336 * Lots of memory leaks were corrected in this release.
2337 There is no known memory leaks anymore, in all of our 600+ tests.
2338 * New command line option --version, to get SimGrid version information.
2339 Packagers may want to add extra words to SIMGRID_VERSION_EXTRA defined in
2341 * Supernovae builds are deprecated, and expected to be removed in the next
2344 -- Sun Nov 17 00:26:44 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2346 SimGrid (3.9) stable; urgency=low
2348 The Grasgory release: GRAS is really dead now.
2350 * Complete overhaul of the internal host structures scheme.
2353 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
2354 was considered as experimental and badly maintained since then.
2355 * Keeping it was thus a trap to our potential users, that could take
2356 it instead of MSG or SMPI by mistake despite is pity state.
2357 * GRAS seems to have very few users (if any), and no one volunteered
2358 to maintain it further. It also induces a lot of XBT code (for
2359 portability sake), that must be maintained too.
2360 * For all these reasons, we killed GRAS. If someone wants to revive it
2361 in the future, don't cry, our git history still remembers of GRAS.
2364 * Major overhaul. Merge our documentation again as time proved that
2365 splitting it was really not helping our users.
2366 * Further improve the developer documentation to help newcomers
2367 hacking on SimGrid itself. The user documentation (and in
2368 particular, the beginner documentation) is still in a sorry state.
2371 * Now works on Windows too!
2372 * Much more extensive test suite, from MPICH
2375 * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
2376 (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
2377 dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
2378 * Bug fix: let task be scheduled when the last dependency to be solved is
2379 a control dependency.
2380 * Remove SD_load_environment_script function.
2381 Use the C sg_platf function if you want to declare a platform
2385 * New function: MSG_process_get_number()
2386 * Old function documented: MSG_config()
2387 * Remove MSG_load_platform_script function
2388 Use the C sg_platf function if you want to declare a platform
2392 * Change the default value of the TCP_gamma constant (maximal size of TCP
2393 congestion window) to a more realistic 4MiB value. If you notice changes in
2394 your simulation results, you can fall back to the previous 20k tiny window
2395 by adding --cfg=network/TCP_gamma:20000 on command line.
2396 * (Hopefully) fix a bug wrt periodic availability and state traces
2397 * Bug fix: use default values at start when first event in availability/state
2398 trace is not at time 0.
2401 * remove the "new_" part of function name sg_platf_new_trace_connect
2402 (resulting in sg_platf_trace_connect), since it does not create
2406 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
2407 use case where it's really mandatory, and maintaining it was a pain in
2409 * New: xbt_fifo_search(), search an item with a user-provided
2410 comparison function instead of dumb pointer comparison.
2413 * Fix the lua deployment:
2414 Use `simgrid.init_application()` before deployment instead of
2415 `simgrid.msg_register_application()` after.
2418 * Transfer the tracing files into the corresponding modules.
2420 -- Tue Feb 5 11:31:43 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2422 SimGrid (3.8.1) stable; urgency=low
2424 The "we are told that some people want to also *install* the simgrid
2427 * Add missing file "tesh.1" to the archive.
2429 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2431 SimGrid (3.8) stable; urgency=low
2433 The Psssshiiiit release: SimGrid jumps into the Cloud.
2436 * Add an experimental interface to manipulate VMs. They are mainly
2437 process groups with very few intrinsic semantic, but they should
2438 allow you to build the semantic you want easily.
2439 * New function: MSG_host_set_property_value()
2440 * New function: MSG_process_on_exit(). To clean memory in all cases.
2441 * Bug fixes that made the host (and link) failures unusable.
2442 * Add a way to auto-restart process when the host in which they are
2443 executing comes back (ON_FAILURE="RESTART" on deployment file,
2444 MSG_process_auto_restart_set).
2445 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
2446 please stop using the old ones, they are DEPRECATED.
2448 * Deprecate functions MSG_global_init() / MSG_global_init_args()
2449 Please use MSG_init() instead. (reducing the amount of entry
2450 points in the library helps us).
2451 * Make it impossible to link against the wrong version of the lib
2452 * Deprecate MSG_clean(). No need to call it anymore.
2453 * Function MSG_get_host_number() is not deprecated anymore.
2456 * Split the doc into a user guide and a reference guide.
2457 * Start a developper guide to help people hacking on SimGrid.
2460 * Enable tracing by default. This modules rocks you should use it.
2461 * Remove option custom_flags. Now use environment variables CFLAGS
2463 * Use default cmake things to detect lua instead of home grown ones.
2464 * New option "enable_mallocators" to disable mallocators, for debugging
2465 purpose ("on" by default).
2468 * Bug fixes around the resource failures: don't let the processes
2469 survive the host they are running onto.
2470 * Add an interface to auto-restart processes when the host in which they are
2471 executing comes back.
2472 * Ensures that SIMIX_clean is called automatically. It's not part of
2473 the public interface anymore (bindings should be updated).
2476 * Bug fix for when SD_Simulate is called with a positive value: be careful
2477 when comparing doubles. Sometimes they are different for non significant
2479 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
2480 parallel task whose initial work is distributed among host according
2481 to the Amdahl's law. Such tasks are created with a parameter alpha
2482 that corresponds to the non-parallelizable part of the computation.
2483 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
2484 between two sets of workstations assuming a 1D block distribution (each
2485 workstation owns a similar share of data) on both sides.
2487 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
2488 Data redistribution will be automatically scheduled once parent and child
2489 are both scheduled. The filling of computation_amount and
2490 communication_amount structures is now done seamlessly thanks to the chosen
2492 * New function SD_workstation_dump to display various information
2493 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
2494 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
2495 bandwidth on the route onto which the task is scheduled and the amount of
2497 To divide the nominal bandwidth by 2, the rate then has to be:
2498 rate = bandwidth/(2*amount)
2499 * Compute tasks that have failed can now be rescheduled and executed again
2500 (from their beginning)
2501 * Increasing source code coverage (src/simdag is now covered at 95.8%
2505 * Re-implement time-independent trace replay using SMPI (at the
2506 smpi_smp_* level) instead of MSG. This should replace
2507 examples/msg/actions/actions.c
2508 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
2509 hindexed and structs)
2510 * Implement the exchange of non-contiguous data.
2511 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
2512 * Correct behavior of smpi/sender_gap and set its default value to 0
2513 * Add option to asynchronously send small messages to allow better
2514 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
2515 specifies the size in bytes under which messages will be asynchronously sent.
2516 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
2517 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
2520 * New C interface to define a platform: XML is now optional.
2521 For more info, please check include/simgrid/platf.h.
2522 * New interface to define random platforms from the C:
2523 For more info, please check include/simgrid/platf_generator.h and
2524 examples/msg/masterslave/masterslave_platfgen.c
2525 * Export a sg_cmdline dynar containing all the arguments we got from
2529 * Two new tracing options for adding comments to trace file so you
2530 can track your experiments (see --help-tracing for details).
2531 * New option to generate an impoverished trace file (--cfg=tracing/basic:1)
2532 * Adding the SimGrid version that generated the trace file as a comment.
2533 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
2534 * Fix to avoid key clashes on Paje links
2535 * Other minor fixes related to the Paje specification
2538 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
2539 and renamed to xbt_str_hash() and xbt_str_hash_ext().
2540 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
2541 * Greatly improve the robustness of mmalloc to user errors (such as
2542 using an area after freeing it, or freeing it twice)
2544 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2546 SimGrid-java (3.8.1) stable; urgency=low
2548 * New module: org.simgrid.trace.Trace (SimGrid trace bindings)
2549 Warning: all methods are visible, but only some of them are
2550 implemented so far. Check the source (src/jtrace.c)
2551 for further information.
2552 * New module: org.simgrid.msg.File (SimGrid File management functions)
2553 * New Module: org.simgrid.msg.VM (SimGrid interface to mimick IAAS clouds)
2554 * Change the meaning of Process.restart: now restart the process from
2555 the beginning, like MSG_process_restart in C.
2556 * Add Process.setAutoRestart: handling of process restart when failed
2558 * Add Process.getProperty, Host.getProperty, Host.getProperty: allows
2559 you to retrieve the properties of the processes/hosts
2560 * Deprecate Msg.clean(): you can just forget about it now.
2561 * New function Process.getCount(), that only works when compiling
2562 with the not yet released version 3.9 of the C library.
2564 * New context factory based on Coroutines. It mandates a modified JVM
2565 but then, the simulations run about five times faster, and there is
2566 no limit to the amount of processes (beside of the available memory).
2568 -- 2012-12-04 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2570 SimGrid (3.7.1) stable; urgency=low
2573 * Restore the prototype of MSG_process_create_with_environment() to
2574 the pre-3.7 situation by removing the kill_time argument.
2575 * Add a MSG_process_set_kill_time() function instead.
2578 * Fix weird behaviors when dealing with parallel tasks.
2581 * Simgrid is now built as a dll.
2582 * Simgrid-java now works on Windows.
2583 * Simgrid-Java is now included into Windows package.
2586 * First pre-build package for MacOSX.
2589 * Fix compilation when using MSG_USE_DEPRECATED.
2590 * Fix some compilation issues on Macs and Windows.
2591 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
2592 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
2594 We discovered that the Lua console is broken, but we are missing the
2595 manpower to fix it right now. The problem existed in 3.7 too, so we
2596 are not blocking the release for that. Sorry if you depended on this
2597 feature, any help would be really welcome.
2599 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2602 SimGrid-java (3.7.1) stable; urgency=low
2604 The "Java aint got to be bloated and slow" release
2607 * Various internal cleanups and performance improvement
2608 Simulations are expected to run up to twice faster or so
2609 * Make Process.kill(process) an instance method, not a static one
2610 * User processes are not java.lang.Thread subclasses.
2611 This breaks the compatibility (sorry), but previous API was
2612 brain-dead, making it impossible to have non-trivial
2613 initializations in the process constructor.
2614 * Require a full constructor per Process sub-class.
2615 Kinda breaks the compatibility (sorry), but this allows a much more
2616 efficient way to launch the processes at simulation startup.
2617 * Do not embeed our version of semaphores, java 1.5 can be considered
2618 as sufficiently prevalent for us to not dupplicate its features.
2622 * Add examples for almost every part of the API
2623 We spotted and fixed a lot of bugs in the process
2625 * New module: asynchronous communication API
2626 * New function: Process.sleep()
2627 It takes milliseconds as argument, just as java.lang.Thread.sleep()
2628 * New module: org.simgrid.msg.Mutex (SimGrid mutexes)
2629 * New module: org.simgrid.msg.RngStream (RngStreams random generators)
2631 -- 2012-06-12 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2633 SimGrid (3.7) stable; urgency=low
2635 The "spring cleanups (before the next Big Project kicks in)" release.
2638 * We can specify the SMPI latency/bandwidth factor with command line
2639 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
2640 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
2641 You can also use the "config tag" from platform file by adding this line
2642 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
2643 (see "example/platforms/tag_config.xml" to use "config tag").
2644 Note that the command line supersedes the platform file configuration.
2645 * Change the correction factors used in LMM model, according to
2646 the latest experiments described in INRIA RR-7821.
2647 Accuracy should be improved this way.
2648 * Use the partial invalidation optimization by default for the
2649 network too. Should produce the exact same results, only faster.
2650 * Major cleanup in surf to merge models and split some optimization
2651 mechanisms from the core of the models. As a result you can now
2652 specify which model to use (e.g., --cfg=network/model:LV08
2653 --cfg=cpu/model:Cas01) and which optimization mode to use
2654 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
2655 Incompatible combinations should err at initialization. See
2656 --help-models for the list of all models and optimization modes.
2657 * The CLM03 workstation model was dropped for simplicity because it
2658 used the deprecated CM02 network model. Use default instead.
2659 * Rename the TCP_gamma configuration option to network/TCP_gamma
2660 * Rename the coordinates configuration option to
2661 network/coordinates, and document it
2662 * Use now crosstraffic keyword instead of the terribly misleading
2663 fullduplex keyword. It is activated by default now in the current
2664 default model, use --cfg=network/crosstraffic:0 to turn it off.
2665 * Ongoing refactoring the model parsing to make XML files optional
2666 See include/simgrid/platf.h for details (still to be completed)
2669 * Major overhaul of the documentation. Almost instructive now :/
2670 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
2671 functions and friends. This interface was considered as
2672 deprecated since over 2 years, it's time to inform our users that it is.
2673 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
2674 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
2675 use these (crappy) functions in your code.
2676 These functions will be removed soon. Stop using them now.
2677 * Deprecate MSG_get_host_{table,number}
2678 Implement MSG_hosts_as_dynar() instead.
2679 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
2680 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
2683 * Stabilize the parallel execution mode of user contexts
2684 * Introduce configuration variables to control parallel execution:
2685 - contexts/synchro: Synchronization mode to use when running
2686 contexts in parallel (either futex, posix or busy_wait)
2687 - contexts/parallel_threshold: Minimal number of user contexts
2688 that must be part of a scheduling round to switch to parallel
2689 execution mode (raw contexts only)
2690 * Fix bugs that prevented to use suspend/resume along with
2691 synchronization structures.
2692 * Fix bugs in process termination that lead to invalid memory access
2693 in very specific conditions.
2696 * Introduce a parallel mode for the models (controlled by surf/nthreads
2697 configuration item). In our tests, running the models in parallel
2698 never lead to any speedups because they are so fast that the gain
2699 of computing each model in parallel does not amortizes the
2700 synchronization costs, even when ultra fast futexes are used.
2701 This is released anyway because YMMV.
2704 * Performance boost by using a swag internally to compute the set of
2705 tasks that are finished and should constitute the return value of
2709 * Enable it by default now that it is considered rather stable.
2712 * Documentation of the tracing functions.
2713 * Performance gains when tracing categorized/uncategorized resource
2714 utilization by avoiding calls to get route when updating resource
2715 variables. LMM constraints are being used instead.
2716 * API changed to set task categories. Use MSG_task_set_category instead
2717 of TRACE_msg_set_task_category, and SD_task_set_category instead
2718 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
2719 * Bugfix for graphicator, routes not correctly obtained, memory leaks
2720 * Examples for link user variables added (see at examples/msg/tracing/)
2721 * Deprecated function TRACE_msg_set_process_category completely removed
2722 * Trace header updated according to the latest Paje file format
2723 * Tracing network lazy updates, no longer obligate users to use full updates
2724 * --cfg=tracing/platform:1 also registers power/bandwidth variables
2725 * Experimental: let user code declare/set/push/pop application states for hosts
2726 * API changed to allow the manual creation of graph configuration files
2727 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
2730 * Improve the API of Lua MSG bindings, using the Lua spirit.
2731 * Each simulated process now lives in its own Lua world (globals are
2732 automatically duplicated). It helps writing simulators. Will allow
2733 to run Splay programs within SimGrid in the future.
2734 * Add a Chord example in Lua, equivalent to the MSG one.
2737 * Start the implementation of a solution to express temporal
2738 properties, not only local assertions. This is still an
2739 experimental work in progress, stay clear from it to be safe.
2743 - Add new runtime parameters --help-logs and --help-log-categories
2744 to display information about supported logging parameters and
2746 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
2747 don't exists anymore.
2748 * Mallocators: allow value NULL for the reset function.
2750 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
2751 create homogeneous dictionaries, where all the elements share the
2752 same free function. Non homogeneous dictionaries will be
2753 deprecated in the next release.
2754 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
2755 - Multi-level dictionaries are deprecated.
2757 - new function xbt_dynar_search_or_negative() that is useful when
2758 you have less than 2 million elements in your dynar and don't
2759 want of the extra complexity of catching exceptions when the
2760 element is not found.
2762 - Make xbt_os_thread module (for thread portability) public.
2763 Documentation is still to come, sorry.
2765 - Cleanups and simplifications to make it maintainable again.
2766 - Exotic features (such as memalign and valloc) were removed.
2767 - The metadata were extended and improved so that the
2768 model-checker becomes able to explore and inspect the heaps.
2769 - This may induce a performance drop when enable_model-checking is
2770 ON in cmake (even if it's not used in the simulation), but it is
2771 necessary at this point to get MC working.
2773 Turn model-checking OFF if simulation performance matters to you.
2774 Not enabling it at runtime is not enough, disable it in cmake.
2776 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2779 SimGrid (3.6.2) stable; urgency=low
2781 The "Not coding new stuff allows to polish old things" release.
2784 * New bindings to the NS3 packet level simulator (experimental)
2785 * Use the raw (efficient) execution contexts instead of the sysv
2786 (portable) ones when possible.
2787 * libpcre is now mandatory in any cases since not using it led to
2788 severe performance loss and possibly other issues
2789 * Update the XML platforms:
2790 - G5K: include the latest machine in Nancy
2791 - GridPP and LCG: new platforms
2792 * Documentation was partially updated, at least (more to come)
2794 Bug fixes, cosmetics and small improvements
2795 * Free terminated processes before the end of the simulation to avoid
2796 exhausting the memory of users having very dynamic amount of
2798 * Bug fix and cosmetics about canceling non-running tasks
2799 * Bug fix about the dot loader's issues when using libcgraph
2802 * Create an installer for windows with nsis (amd64 and win32)
2803 - Add an hello world project to illustrate SimGrid project creation.
2804 - Embed libpcre into the SimGrid installer to avoid
2805 its compilation burden
2806 * The raw execution contexts should work on Apple now
2807 * Port to Windows 64 bits
2808 - Sysv contexts now have an implementation for this arch
2809 - GRAS communication features now support this arch
2810 * Drop support for borland compiler on windows
2811 - this code was not maintained, and we kinda depend on gcc nowadays
2812 * Fix portability issues on kfreebsd/gnu: build error about semaphores
2813 * Fix portability issue on unstable ubuntu: linker became picky on
2816 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2818 SimGrid (3.6.1) stable; urgency=low
2820 The "Oops, we broke Macs too" release
2823 * Fixed contexts detection so that raw ones are used when possible
2824 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
2825 leads to a strange error, with user code segfaulting sometimes when
2826 the generated code is not perfectly aligned (which is not
2827 controllable from the user side, depends on the amount of code)
2830 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
2832 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2834 SimGrid-java (3.6) unstable; urgency=low
2837 * Split of every thing from SimGrid v3.5 into a separate package.
2839 -- 2011-10-05 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2841 SimGrid (3.6) stable; urgency=medium
2843 The Summer Release, also known as the "OMG! They Killed Kenny!" version
2846 * Bindings now constitute their own package, separated from the main one.
2847 Rationale: reduce our maintenance nightmare by reducing the module coupling
2848 They will soon be released on their own on gforge.
2850 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
2851 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
2853 GRAS: It is not considered as stable anymore, but experimental. Sorry.
2854 * It's not quite deprecated for now because we have no replacement,
2855 but it may soon become the case.
2858 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
2859 * Fortran: New user-level cache variable to store the rank of the running
2860 process. This improves performance by an order of magnitude.
2861 * C: New coccinelle script to automatically locate and modify global and
2862 local static variables.
2863 * Improved SMPI network model with a sender-side gap to account for multiple
2867 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
2868 only say if a communication is finished, no matter whether it succeeded or
2869 failed. You can call MSG_comm_get_status() to know the status of a finished
2871 * New function MSG_task_dsend() to send a task and detach it. When a
2872 communication is detached, you are never notified of its success or failure
2873 and the memory is released automatically once it is finished. This function
2874 is useful when you don't care about the end nor the success of a
2876 * Change the prototypes of action replay. Sorry for inconvenience,
2877 but this is really more efficient this way (and to adapt your code,
2878 you just have to fix the initialization, that shouldn't be too long)
2879 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
2880 ever managed to do anything useful with it.
2881 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
2882 takes a dynar of communications. It returns immediately and gives the
2883 index of a finished communication (if any).
2884 * New example: a basic implementation of the Chord P2P algorithm.
2887 * New model for multi-core CPUs. You can now use the core attribute to
2888 precise the number of cores of a host. This is a basic model. Every
2889 process running on the host receives at most the power provided in
2890 the DTD (throughput<=power). Total throughput of process cannot exceed
2892 * New peer tag. This peer tag creates a tiny AS comprising a host and a
2893 router linked by an up-link and a down-link (possibly asymmetrical).
2894 This kind of pattern allows to easily build last-mile model style platforms.
2895 Aggregating such patterns in a rule-based AS is thus the technique of
2896 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
2897 * New model for Vivaldi routing. We transformed the Vivaldi network model
2898 into a Vivaldi routing model (based on the rule-based model). This allows to
2899 combine Vivaldi based latencies with last-mile platforms.
2902 * Added a check for NaN of IEEE754 infinite in the double entries of
2904 * Introduce a new context factory "raw", highly inspirated from the
2905 ucontext factory, but using manually crafted functions in assembly to
2906 do the work in an efficient manner.
2907 * Allow to change the used context factory at run time, not only at
2908 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
2909 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
2910 contexts at runtime (only with raw contexts or ucontexts).
2911 * Completely rewrote this module to allow parallel execution of user
2912 processes. Use --cfg=contexts/nthreads:N to execute user processes
2913 with N parallel threads (the default is 1, meaning no parallelism).
2914 * Allow to decide dynamically between sequential and parallel modes.
2915 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
2916 processes in parallel only when their number is greater than or equal to P
2918 * Added a check for NaN of IEEE754 infinite in the double entries of
2922 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
2923 won't output the state of processes when interrupted with Ctrl-C
2924 * Add a new function xbt_dynar_to_array that transforms a dynar into a
2925 NULL-terminated array. This may solve backward compatibility issues
2926 due to the change to return type of SD_simulate. See also:
2927 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
2928 * Add new macros with variable number of arguments.
2929 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
2930 - in xbt/asserts.h: xbt_assert
2931 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
2932 - in xbt/ex.h: THROWF and RETHROWF.
2933 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
2935 * Change xbt_die() to accept a format string with arguments, just like printf.
2936 * New data structure: xbt_lib_t, like a dict but more general and with better
2940 * New configuration options
2941 Options triva/categorized and triva/uncategorized can be used to generate
2942 graph configuration files for Triva visualization tool.
2943 * Configuration option tracing/platform is renamed to tracing/categorized
2944 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
2945 * New TRACE_user_link_variable interface:
2946 User provides the name of the link and the tracing variable to attach to it
2947 * the declaration of tracing categories must be done after the environment
2949 * simpler tracing interface, just one way to declare categories
2950 TRACE_category or TRACE_category_with_color, it is up to you
2951 * links in the trace file are again identified by their names
2952 * trace contains the full platform hierarchy exactly as declared using the ASes
2953 * Options tracing/msg/[task|process]:1 groups the process by hosts
2954 for both cases, tasks and processes must have names that are unique during the simulation
2955 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
2956 * The experimental option tracing/msg/volume is deprecated
2957 its functionality may be reincorporated if needed
2959 The tracing generates a trace file with unordered timestamped events,
2960 because of the way the core simulator (surf) works. A script available
2961 at the tools directory (fix-paje-trace.sh) can be used to put the events
2962 in order. We have changed the tracing so it can generate ordered timestamped
2963 events in the final trace, but depending on the simulator (and how much time
2964 is simulated) that can lead to a huge memory utilization. It is deactivated
2965 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
2967 Build Infrastructure
2968 * Define a SIMGRID_VERSION macro in simgrid_config.h.
2969 - We are trying hard to keep the API stable, but it may happen that
2970 some things change (we're a research project after all, not a
2971 nuclear plant operating system). If such things should happen, you
2972 could rely on that macro to adapt.
2973 - current value: 30600 for 3.06.00, aka 3.6
2974 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
2975 a number that can be compared with SIMGRID_VERSION.
2976 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
2977 assertions and verbose/debug logging events are disabled at compile time.
2979 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2981 SimGrid (3.5) stable; urgency=medium
2984 * New feature to any SimGrid-based simulator: Model-Checking
2985 Check SIN#1 for more details.
2988 * New Model SMPI (three-interval linear regression for correction factors)
2989 See RR-7426, available at http://hal.inria.fr/inria-00527150
2990 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
2991 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
2992 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
2993 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
2994 * See also src/smpi/README
2999 - Tracing API changes: TRACE_start and TRACE_end should not be called
3000 by user-code. They are automatically called by simulators created
3001 with SimDAG, MSG and SMPI if the toolkit is compiled with
3002 tracing_enabled=ON. Categories declaration and utilization remain the
3003 same for MSG and SimDag.
3004 - A function was added to the tracing API to declare categories with
3006 - TRACE_category_with_color (char *category, char *color)
3007 where color must be in the following format
3008 "%f %f %f", red, green, blue
3009 and red, green, blue are float values in the interval [0, 1]
3010 - User can specify NULL as color parameter, or continue calling
3011 TRACE_category (cat)
3012 On that case, the tracing system will define random colors
3013 - The following command-line options are supported:
3014 --cfg=tracing/filename:msg.trace
3015 --cfg=tracing:1 (activate tracing, needed to use others)
3016 --cfg=tracing/platform:1 (categorized resource use)
3017 --cfg=tracing/uncategorized:1 (uncategorized resource use)
3018 --cfg=tracing/msg/task:1 (task creation)
3019 --cfg=tracing/msg/process:1 (process creation, migration)
3020 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
3021 --cfg=tracing/smpi:1 (SMPI interface tracing)
3022 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
3023 - examples of examples/msg/tracing updated
3025 - DAXLoader and DOTLoader functions can generate tasks with categories
3026 - A new function to attribute a category to SD tasks:
3027 TRACE_sd_set_task_category (SD_task_t task, char *category)
3028 * Tracing the MPI interface implemented by SMPI
3029 - Collective operations are traced with states
3030 - Point-to-Point operations are traced with states/links
3031 - Tracing activated by a parameter "-trace filename" passed
3032 to smpirun during execution (considering that simgrid
3033 is compiled with tracing enabled)
3034 - To run the simulation with gdb, the simulator
3035 accepts --cfg=tracing/smpi:1 to trace SMPI
3036 - tesh files to check if smpi tracing is ok
3037 - See examples/smpi/NAS/DT-trace
3038 * GTNetS tracing re-worked
3039 - adaptation to the tracing system of GTNets to cope
3040 with modifications regarding the fullduplex mode
3041 - new tesh files to check if gtnets tracing is ok
3044 * Asynchronous communications through the functions:
3045 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
3046 * New function: MSG_load_platform_script()
3047 to make possible using a lua script instead of XML files to set up platforms
3048 * New function: MSG_set_function
3049 to associate functions to processes, used when bypassing the parser
3050 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
3052 Platforms: Add some more examples in examples/platforms
3053 * Grid'5000: see www.grid5000.fr
3054 * *_30000_hosts.xml: various huge files [mainly scalability testing]
3057 * Change the XML format. This is a very important modification. SimGrid
3058 3.5 introduces a new hierarchical format based on the notion of
3059 Autonomous Systems. Compatibility with old format is ensured
3060 through the perl script provided in the install bin directory
3061 bin/simgrid_update_xml.
3062 It is now possible to build platforms with specific routing
3063 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
3064 connect several platforms together. We will try to provide soon
3065 set of realistic platforms exploiting these properties (have a
3066 look at examples/platforms/ for the moment).
3067 * Take the opportunity of the XML format change to be a good XML citizen:
3068 rename link:ctn to link_ctn and similar changes (also dealt with by
3070 * Add a new routing scheme (rule-based) using regular expressions. It
3071 enables to have an extremely low memory footprint when the
3072 underlying routing is simple and can be compactly described. You
3073 need to have libpcre4-dev (perl regular expressions) installed if
3074 you want to use this routing scheme.
3075 * Revive the cluster TAG and allow to easily and efficiently (both in
3076 term of memory and speed) connect clusters together. Have a look
3077 at teshsuite/simdag/platforms/ to see how this can be done. With
3078 this tag, you can create clusters with thousands of tasks at no
3079 cost (have a look at examples/platforms/).
3080 Note: clusters are implemented as ASes, so there is no need for an
3081 enclosing AS tag if you have only one cluster in your platform.
3082 * Add new generic functions in the public interface that allows the user
3083 to call SURF 'create_resource' methods from your code (same
3084 functionality as the XML bypass mechanism but with a much lighter
3086 * Add a new model (enabled through command line --cfg=network/model:SMPI)
3087 that uses a piecewise linear approximation to produce better
3088 results when exchanging small messages.
3089 * Add a new parameter to handle correctly full duplex link and account
3090 for interferences between uplink and downlink communications
3091 (activate with --cfg=fullduplex:1).
3094 * Rename the SD_READY (all dependencies are satisfied and task is
3095 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
3096 dependencies are satisfied) state.
3097 This prevents a confusion between the notion of "ready to schedule"
3098 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
3099 simulated" (SD_RUNNABLE) used by the simulation kernel.
3100 * Change the way a task is considered as ready. Instead of removing
3101 dependencies when a task is done, a counter is decreased. This way,
3102 it is always possible to reach ancestors thanks to the
3103 SD_taks_get_parents function (even after the end of the simulation.)
3104 * Change the return type of SD_Simulate from (SD_task_t*) into
3105 xbt_dynar_t. This function was in handling a dynar internally and
3106 converted it into a NULL terminated array for historical reasons.
3107 * New function SD_dotload(char*) to load a DAG described in dot
3108 format. This loader and the corresponding examples require the
3109 installation of the graphviz library.
3110 * Fix a bug in the management of tasks of size 0 in the surf network
3111 models. This problem was only visible with SIMDAG and you should
3112 thus disregard results produced with earlier versions if you
3113 relied on this feature (some tasks were blocked because of this).
3114 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
3115 even though your applications were doing only point-to-point
3116 communications and sequential computations. Now you can really use any
3117 model you want (of course, if you create real parallel tasks, which are
3118 not implemented in most models beside ptaskL07, this will abort).
3119 * Add an example that schedules a DAX on an heterogeneous platform
3120 using a Min-Min strategy.
3121 * New function SD_workstation_get_current_task() that returns the kind
3122 of task currently running on a workstation in the sequential access
3124 * Raise some warnings when unexecuted tasks remains at the end of the
3125 simulation. This is usually caused by cycles in the DAG.
3128 * New function: SIMIX_process_set_function() called by MSG_set_function
3129 * Change the underlying waiting queue in semaphores so that a process
3130 can wait on several of them simultaneously (as in waitany).
3131 * Fix the way to handle tokens in semaphores so that all access patterns
3132 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
3133 * kill the dirty pimple SIMIX_message_sizes_output()
3134 Please use (proper) visualization instead
3137 * New data container: setset (set of sets of elements)
3138 * New module: mmalloc (mapped malloc, allowing to have several
3139 independent segments of malloc)
3140 * New function: xbt_dict_cursor_set_data()
3141 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
3142 * New function: xbt_dynar_is_empty()
3143 * New function: xbt_fifo_get_last_item()
3144 * Fix xbt_dynar_shrink(): use the right element size.
3145 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
3146 uninitialized areas during expand.
3147 * Fix semaphores: previous implementation was severely broken.
3148 * Use library init/fini functions for our initialization.
3149 - you can use logs and other feature as soon as you want in your
3150 code (even before the xbt_init / MSG_init)
3151 - xbt_exit is now a no-op and produce a warning when used.
3154 * Port GRAS to new SIMIX mechanisms. This allows gras users to
3155 benefit from the latest improvement to the simulation kernel.
3156 * Kill measurement sockets for now. If you rely on them, sorry. This
3157 release is not for you. This feature will be reintroduced in the
3158 future, but we cannot delay the release any further.
3159 * New function: gras_msgtype_get_name().
3160 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
3161 * Fix (at last) the pmm example: it should not randomly fail anymore.
3163 Build chain: bug fixes and overall polishing
3164 * Cmake is now stable enough. Hence, we killed the autotools.
3165 * Port to windows ( TM :)
3166 * Fix the 'make install' target.
3167 No need to use 'make install-simgrid' anymore
3168 * Introduce a 'make dist' target compiling a *source* archive
3169 'make package' compiles a binary archive
3170 * Compile java files only on need
3171 * Add --cd and --setenv command line options to tesh
3172 * Out of source builds are not fully supported yet, but we are close
3173 * Enable supernovae and optimization flags by default for our users
3176 * Add layer to set up environment directly from lua, without XML.
3177 * The effect of gras_stub_generator can be achieved through
3178 lua too (check examples/gras/console/ping_generator.lua)
3180 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
3182 SimGrid (3.4.1) stable; urgency=low
3184 The "Polishing easter eggs is probably a good idea" release.
3185 This is a bug fixes release only.
3189 * Fix a bug preventing the tasks from begin garbage collected.
3192 * Fix a bug occurring when a host involved in a communication fails.
3193 This was not detected properly by the other peer involved in the
3194 communication. Now, it's reported as a network error.
3197 * Warn the user about loop dependencies in data flow of DAX files
3198 * Obey the control-flow dependencies of DAX files
3201 * Add option "enable_smpi" allowing to not compile SMPI.
3202 Probably useful for the (Mac) users experiencing a build error here
3203 * Improve the detection of lua5.1 and ruby1.8
3205 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
3207 SimGrid (3.4) stable; urgency=low
3209 The "Easter in Cargese" release. Also known as (major changes):
3211 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
3212 ~> bindings were greatly improved
3213 ~> new tracing infrastructure for better visualization introduced
3215 * the "Welcome to configury modernity" release.
3216 ~> we switched from autotools to cmake, and improved our cdash
3219 A more detailled list of changes follow (full detail in svn log).
3221 Java Bindings: Various Cleanups
3222 * (install java-gcj-compat-dev on debian-like to use them)
3223 * Remove put/get: no need to export deprecated interface in Java
3224 Use send/receive instead.
3225 * Cleanup the examples and add a README per directory
3226 * Remove example autoDestination (that's the only way to go now)
3227 * Remove example explicitDestination (was a plain copy of basic)
3228 * Make JniException a runtime exception, so that there is no need to
3229 declare the fact that you may encounter such a beast. I guess that
3230 nobody will ever want to survive such error.
3231 * Create specific errors for each MSG case of failure:
3232 host failure, transfer failure, timeout, task cancelled
3233 * Cleanup the exceptions that may get thrown by each function
3234 * Other internal cleanups in Java bindings. Performance still bad :/
3235 Ruby and Lua Bindings: create them
3236 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
3237 * That's new and great, you should try them out.
3238 Same functionalities than Java bindings, only even less polished
3240 * Kill the useless "rate" argument of SD_task_get_execution_time()
3241 Everyone used to provide -1 as a value, it was not used, and the
3242 semantic of a possible use wasn't even clear.
3243 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
3244 either as comm costs or compute costs to mean that there is no
3245 such thing for that specific task.
3246 * Add a SD_task_set_name() function
3247 * Fix SD_task_unschedule() on typed tasks
3248 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
3249 * In DAX loader, accept useless 'level' attributes to <job> since
3250 LIGO DAGs have them (seem to be to ease graphical representation).
3252 * Add an example masterslave_mailbox.c using send/receive and not
3253 the deprecated put/get interface.
3254 * Kill the MSG_paje_output() function. It's a noop since 2 years.
3255 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
3257 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
3258 (declare MSG_USE_DEPRECATED to still have the old name)
3259 * Add a MSG_task_set_data() function
3260 * About trace replay (see examples/msg/actions):
3262 - Allow to work with splitted trace files for each process
3263 Give the specific trace file as argument of each process,
3264 and call MSG_action_trace_run(NULL)
3265 You can still have one merged file for all processes.
3266 - Fix implementation of collective operations
3267 * Allow task_execute() on 0-sized tasks (closes #10063)
3269 * This is the first release of SimGrid where SMPI is not considered
3270 beta anymore (even if some corners should still be improved)
3271 * Port over the new SIMIX_network submodule (internal refactoring)
3272 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
3273 * Implement more missing elements of the standard:
3275 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
3277 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
3278 MPI_Scan() MPI_Get_processor_name()
3279 - Added implementation of missing case for Alltoall (warning: it's
3280 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
3281 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
3282 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
3283 SMPI_MPI_Allgatherv()
3284 * Bug fixes include:
3285 - MPI_Waitsome() was broken
3286 - Allow relative includes in smpicc
3287 - Command line cfg argument 'reference_speed' was ignored...
3288 - Some functions did not properly lead to auto-benching of user code
3289 - smpicc passes -O2 by default (just like openmpi one)
3291 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
3292 * Bug fixes about timeouts during communications
3293 * add SIMIX_message_sizes_output() as a pimple to write to file the
3294 amount of messages per size. Use gnuplot to get histogram.
3295 Pimple because that's the only user-visible function of simix,
3296 defined directly in xbt.h (irk, sorry)
3298 - Add a SIMIX_sem_get_capacity() function
3299 - Fix interactions with processe resume/suspende
3300 - release_forever() was stupidly broken
3301 - Fix SIMIX_display_process_status() for processes in a semaphore
3302 - Make SIMIX_sem_block_onto() user-visible
3303 * Refactoring context stuff:
3304 - Use pseudo-OOP for better modularity
3305 - reimplement SIMIX_process_kill() without process_schedule() so
3306 that the latter can take as invariant that it is called from
3308 - Merge context_start into context_new for sake of simplicity
3310 * Add a Vivaldi network model, coded live during SUD'10 ;)
3311 * Rename configuration variables to start a hierarchy:
3312 o cpu_model -> cpu/model
3313 o network_model -> network/model
3314 o workstation_model -> workstation/model
3315 * New configuration variables:
3316 o network/bandwidth_factor: correction to bandwidth
3317 o network/latency_factor: correction to latency
3318 o netwotk/weight_S: correction to the weight of competing streams
3319 * Add a long description to the models, that users can see with such
3320 argument on the command line: --cfg=cpu/model:help
3321 * --help-models display the long description of all known models
3323 * config: add the ability to set a default value after registration
3324 Does not override any previously set value (e.g. from cmd line)
3325 * dict: allow to have integer key and data.
3326 When so, you need to use the following functions
3327 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
3328 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
3329 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
3330 In contrary to regular dicts, the key is not malloced before copy.
3331 Mixing scalar and regular elements in the same dict is not tested
3333 * Allow to use xbt_dynar_shrink() to expend the dynar instead
3334 Tracing for Visualization:
3335 * SimGrid is now instrumented in order to generate a trace file for
3336 visualization analysis: to use it, need to compile SimGrid with the
3337 "tracing" option enabled, and instrument the program using SimGrid with
3338 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
3339 (among other functions).
3340 * The instrumentation only traces the platform utilization for now
3341 * Documentation to use the tracing functions and how to analyze the
3342 traces with the Triva tool is written.
3343 * More information about: SimGrid FAQ (in the section Tracing Simulations
3346 * We moved to cmake as default build system. Autotools support will
3347 be dropped soon. Check the FAQ for more info about how to use it.
3348 * Greatly improved our cdash/ctest interactions
3349 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
3350 * Added memory checking tests with valgrind; lot of memleak fixing.
3351 This may be the first release of SimGrid with so few memory issues
3352 * Added code coverage tests.
3353 Our coverage is still improvable, but at least we see it on cdash.
3355 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
3357 SimGrid (3.3.4) stable; urgency=low
3359 The "Desktop Grid needs love too" release (also called Xmas release).
3361 Models improvements:
3362 * Major speedup in the maxmin system solving by using lazy evaluation
3363 Instead of solving completely the maxmin system at each iteration,
3364 only invalidate (and recompute) the modified parts.
3365 This new feature is enabled in default models but you can try to
3366 turn it on with "--cfg:maxmin-selective-update=1" for other models.
3367 * Cas01 IMproved as default CPU model
3368 This CPU model is the same Cas01 model, but it uses the
3369 maxmin-selective-update flag and a heap structure to manage
3370 actions on SURF kernel.
3371 It reduces the complexity to find the next action to finish and,
3372 consequently, it's faster than the old Cas01.
3373 This is the new default CPU model (Cas01).
3374 * Rename the old Cas01 model to Cas01_fullupdate
3375 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
3376 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
3377 * CpuTI (CPU Trace Integration)
3378 A new CPU model whose objective is simulate faster when using
3379 availability trace files.
3380 Instead of using a full featured, over engineered maxmin system for
3381 CPU modeling, this model does the pre-integration of traces files
3382 to calculate the amount of CPU power available, and so, executes
3383 faster than the old CPU models.
3384 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
3385 * Use LV08 as default network model since it gives better accuracy
3386 for small messages and shouldn't change things for big ones.
3387 Use --cfg=network_model:CM02 to get the previous behavior.
3390 ******************************************
3391 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
3392 ******************************************
3393 * The new CPU model may changes simulations!
3394 The point is that events occurring at the exact same timestamp
3395 are not scheduled in the same order with the old and new
3396 version. This may be enough to completely change the execution
3397 of simulations in some cases.
3398 * The new network model will change simulations!
3399 This new model is more realistic than the previous one, so you
3400 should consider redoing your old experiments with this model.
3401 Sorry for the inconvenience.
3404 * Introduce the supernovae compilation mode
3405 When compiled that way, the whole SimGrid (or almost) is put in a
3406 single compilation unit and compiled in one shoot.
3407 This is to help gcc which has difficulties to inline stuff from one
3409 The speedup seem to be above 15%, althrough more tests are needed on
3410 amd64 to confirm that gain.
3413 * Port of MSG's mailbox on top of SIMIX network
3414 The put/get mechanism was greatly simplified on the way.
3417 * New SIMIX network module. Provides:
3418 - Mailbox: rendez-vous mechanism to find with who you want to speak
3419 - Synchronous send/recv: easier and hopefully faster since the
3420 logic is handled in the maestro process directly now
3421 - Asynchronous send/recv: you dreamt of it? It's here now
3422 Too bad that nobody cared enough to propagate the change to MSG.
3423 * Add semaphores as SIMIX synchronization mechanism.
3426 * new function SD_daxload(char*) to load a DAX file
3427 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
3428 * Introduce typed tasks. Specify its kind and cost at creation.
3429 At scheduling, just give where it should be placed, and the cost
3430 for each involved resource is automatically computed.
3431 Existing constructors so far (more to come of course):
3432 - SD_task_create_comm_e2e() for end-to-end communication
3433 - SD_task_create_comp_seq() for sequential computation
3434 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
3435 * new function SD_task_dump() for debugging display
3436 * new function SD_task_dotty(task,FILE*) writing to file the info
3437 about the task in dotty format
3438 * SD_task_dependency_exists() can now cope with having one of its
3439 arguments NULL. If so, it tests whether the other argument has any
3441 * Add getters on list of preceding/following tasks:
3442 SD_task_get_parents(task) and SD_task_get_children(task)
3443 * Add getters on amount of workstations and list:
3444 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
3445 * Add getter on task kind: SD_task_get_kind(task)
3446 * Update the start_time and finish_time of tasks on completion/failure
3447 * Bugfix: Remove task from state swags when destroyed
3450 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
3453 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
3454 dynar with one separate thread per value of the dynar.
3455 * Change the prototype of xbt_thread_create(), sorry.
3456 Added a boolean parameter indicating whether we want to join this
3457 thread (used in SG only for now)
3458 * Implement xbt_thread_join and xbt_thread_yield in SG also.
3461 * GTNetS wrappers should now be usable again (and betterly tested too)
3462 * Fix a major regression from 3.2 where the timeout provided to
3463 MSG_task_put_with_timeout() was used as absolute time before which
3464 the comm should be done.
3465 * Start to fix the <cluster> tag.
3466 - Internal links should be good now (beside of the loopback, which
3467 use the private link instead)
3468 - paths to the external world is still rather broken
3469 - the <route:multi> tag is just broken. Actually that's brain-dead.
3470 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
3471 to make it less stupid
3472 ** Check your platform with teshsuite/simdag/platforms/flatifier **
3473 * Fix a source-level compatibility glitch from 3.2: after defining
3474 MSG_USE_DEPRECATED, you can use the old name
3475 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
3476 * Allow to compile from the SVN with automake 1.11
3477 * Fix some problems when using the "start_time" tag in deployment XMLs.
3478 * Fix #8569: XBT/synchro.h has redundant declarations
3479 * Fix #8563: MSG return values and exceptions
3480 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
3481 * Integrate patch #8636: Obey DESTDIR when installing documentation.
3482 Thanks to Robson Peixoto.
3483 * Fix a vicious bug in dictionaries inducing that some elements were
3484 not freed on xbt_dict_free()
3486 Portability report of this version:
3487 * Main portability targets:
3488 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
3489 on (amd64/i386/ia64)
3490 - mac leopard on i386
3491 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
3492 but nothing critical.
3493 * Other platforms: windows, AIX and others were not tested for this release
3495 Timing report of this version:
3496 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
3497 scenario parameters). From 8h to a few seconds in desktop grid settings.
3498 * Supernovae brings about 25% speedup on i386.
3500 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
3502 SimGrid (3.3.3) stable; urgency=low
3504 The "Need for Speed" release.
3506 The timings done to validate the 3.3.2 were faulty.
3507 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
3509 The problem was a conversion from a manually handled vector to
3510 xbt_dynar_t on the critical path.
3511 xbt_dynar_foreach calls functions, inducing stack management crap.
3513 We inlined these functions and xbt_dynar_foreach is now breath taking.
3514 We also inlined xbt_swag_belong on the way.
3516 Here are some approximate speedup measurements (on master/slaves
3517 simulations lasting between 10s and 20s each):
3518 3.3.1 -> 3.3.2: about same performance
3519 3.3.2 -> 3.3.3: 40% speedup
3520 3.3.1 -> 3.3.3: 40% speedup
3521 3.3.1 with inline patch -> 3.3.3: 30% speedup
3523 Our reading is that the refactoring which occurred in 3.3.2 made us
3524 suffer much more from the xbt_dynar_foreach low performance, but
3525 once we solved this, this refactoring proved to be very performance
3526 effective. From the 40% speedup, somehow, 10% are due to the
3527 inlining and 30% to the refactoring.
3529 That's a pitty that gcc cannot inline functions placed in other files
3530 alone. We have to choose between:
3531 - break the encapsulation (by putting private data structures and
3532 accessors in headers files to help gcc)
3533 - live with low performance
3534 - switch to a decent compiler such as icc (not quite possible).
3536 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
3538 SimGrid (3.3.2) stable; urgency=low
3540 The "Simplicity does not preceed complexity, but follows it" release.
3542 The main contributors of this release were (lexical order):
3543 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
3546 * Extract the routing logic into its own object.
3547 (was dupplicated in network.c and workstation_LV07.c;
3548 Allows to implement other ways of storing that info)
3549 => kill now useless network_card concept
3550 - Use dynar to represent routes (instead of void** + int*)
3551 - kill link_set (use surf_network_model->resource_set instead)
3552 - Add a command-line option to choose the routing schema to use
3553 - Add three new models:
3554 * Floyd (shortest path computed at initialization)
3555 * Dijikstra (shortest path recomputed all the time)
3556 * Cached Dijikstra (shortest path computed on need)
3557 All these models where contributed by Silas De Munck, and are
3558 described in his ICCS09 paper.
3560 * Simplify model declaration
3561 (less redirections, less function to write when defining a model)
3562 - Factorize stuff between models:
3565 surf_model_resource_set(model)
3566 surf_model_resource_by_name(model, name)
3567 - Unify the types of models in s_surf_model_t (using an union)
3568 - Embeed fields of common_public directly into s_surf_model_t
3569 - Rename model methods:
3570 action_free ~> action_unref
3571 action_change_state ~> action_state_set
3572 action_get_state ~> action_state_get
3573 - Change model methods into functions:
3574 (model)->common_public->action_use ~> surf_action_ref
3576 * Implement a generic resource; use it as ancestor to specific ones
3577 (allows to kill duplicated code in models)
3578 Drawback: timer command don't need no name nor properties;
3579 workstation_CLM03 don't need no properties
3580 (but I guess we can live with those few bytes wasted)
3582 * Improve the action object model
3583 - implement a constructor avoiding dupplicated code about field
3584 initialization in generic_action part.
3586 * Kill the SDP model: it has an external dependency, is deprecated
3587 in flavor of modern lmm models, and didn't compile since a while
3590 * Relocation of the context module from XBT to SIMIX.
3591 (the context were decoupled from the simix processes, duplicating a lot of code)
3592 => a lot of code was factorized
3593 - less overhead is introduced during scheduling
3594 - simpler API for the context factory
3595 - the logic for process creation,destruction and manipulation was simplified
3596 * Simplification of the s_smx_process_t data structure.
3597 => accesing the simix level data associated to a process is faster now,
3598 and the code is a lot more readable.
3601 * Implement some more MPI primitives:
3602 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
3603 -implementation: Bcast: flat or 2-ary tree (default),
3604 Barrier: 4-ary tree,
3606 Allreduce: Reduce then Bcast
3607 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
3608 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
3609 Alltoallv: flat tree, like ompi
3611 * Add support for optimized collectives (Bcast is now binomial by default)
3612 * Port smpirun and smpicc to OS X
3615 * Kill SD_link_get_properties: hard to maintain and makes very little sense
3616 Shout out if you used it.
3619 * Display the list of still queued messages in SG mode when existing
3623 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
3624 * Add xbt_graph_node_get_outedges() [Silas De Munck]
3625 * Add xbt_str_from_file(FILE*)
3626 * Add xbt_dict_get_key achieving a linear reverse search
3627 * Remove the context module
3629 Portability report of this version:
3630 * Main portability targets:
3631 - Linux(debian)/x86/context
3632 - Linux(debian)/x86/pthreads
3633 - Linux(debian)/amd64/context
3634 - Linux(debian)/amd64/pthreads
3635 On these, we still have the eratic breakages of gras/pmm and
3636 amok/saturate_sg reported in previous version. We still think
3637 that the tests are the cause of the fault, not the tested code.
3639 - Mac OSX Leopard/x86/context
3640 Still false negative in tesh autotesting.
3641 Smpi still fails, but this time because readlink does not accept -f
3642 Everything seems to work properly beside of that.
3645 - AIX version 5.3 (only tested contexts this time)
3646 Smpi still fails there because mktemp is not installed.
3647 Everything seems to work properly beside of that.
3649 I managed to compile it for the first time, but several breakages.
3650 Won't delay the release for this exotic platform.
3652 * Windows: it's still lagging behind. If you want to help, please
3655 Timing report of this version:
3656 This version seem to be more than 5% faster than 3.3.1 (on linux
3657 64bits with contexts). The gain is less than expected, we are
3658 investigating this for next release.
3660 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
3662 SimGrid (3.3.1) stable; urgency=low
3665 * Implement a --cfg-help to show existing configuration variables
3666 * Build chain do not require doxygen in maintainer mode
3669 * fix a bug on struct sizeof computation, which prevented the
3670 exchange of arrays of structs in some conditions
3671 - added a regression test about this in datadesc_usage
3672 * Allow the exchange of 0-long dynamic vectors.
3673 - for that, use -1 as indicator of dynamic size instead of 0
3674 - This implied to change any size from unsigned long to long,
3675 reducing a bit communication abilities, but I guess that with
3676 64bits being quite common, this is more than enough.
3677 - This also induce a protocol change, thus bumping network protocol
3678 version from 0 to 1 (if we have external users, we have to get
3679 clean on that point too ;)
3680 - added two regression tests about this in datadesc_usage
3681 * Be more verbose when propagating local exceptions
3682 This helps debugging.
3683 * Display the status of simulated processes when receiving SIGINT in
3687 * Allow to control the simulation from a trace file.
3688 New functions MSG_action_register() and MSG_action_trace_run()
3689 The first one allows to associate a function execution to each
3690 kind of action while the second one parses a trace file and
3691 triggers the corresponding actions within the system.
3692 For now, only a toy example is provided in examples/msg/actions
3693 * Add an example of process migration in examples/msg/migration
3694 * Fix a bug in task exchange which broke MSG_task_get_sender()
3695 Add a teshsuite regression test for that.
3696 [Bug: if MSG_task_get_sender() is called after sender exit,
3698 * Fix a bug which prevented suspend/resume to work properly
3699 * Display the status of simulated processes when receiving SIGINT
3700 This fixes a regression of v3.3. due to the introduction of SIMIX
3701 * Bug fixing in failure management:
3702 - trace could not start by a failure at time 0
3703 - failure during communications were not working
3706 * Add SIMIX_process_set_name() to change the name of the current
3707 process in the log messages.
3708 * Store smx_hosts in a dict since we only retrieve them by name
3709 * Move the configuration infrastructure to surf
3712 * Move the configuration infrastructure to surf
3715 * Massive internal cleanups:
3716 - Store internal structures on processes instead of hosts (allows
3717 to have more than one process per host, in addition of being more
3719 - Cleanup the initialization/finalization process
3720 - Kill a whole bunch of unneeded synchronization:
3721 processes run in exclusive manner within the simulator
3722 - Move queues from global tables to process data fields
3724 - now accept -platform and -hostfile arguments
3725 - Pass the right rank value to processes according to the hostfile
3726 * Compile the examples by default, and use them as regression tests
3727 * Implement MPI_Wtime()
3728 * Change the reference speed to a command line option
3731 * TCP_gamma can now be specified as command line option using
3732 --cfg=TCP_gamma:10000000.0
3733 * Change the --surf-path cmd line option into --cfg=path:
3736 * Also include strbuff from xbt.h public header
3737 * xbt_ex_display(): do not free the exception after displaying
3738 This allows to do more with the given exception afterward.
3739 Users should call xbt_ex_free() themselves.
3743 Portability report of this version:
3744 * Main portability targets:
3745 - Linux(debian)/x86/context
3746 - Linux(debian)/x86/pthreads
3747 - Linux(debian)/amd64/context
3748 - Linux(debian)/amd64/pthreads
3749 These targets fail about 1/10 of times on gras/pmm, but we believe
3750 that this is because of the test, not because of SimGrid.
3751 amok/saturate_sg fails even more rarely, and the test may not be
3754 - Mac OSX Leopard/x86/context
3755 The test suite still spits tons of errors because some obscure
3756 force prevents us from removing the temporary directories
3757 arguing that they still contain some metadata I've never heard of.
3758 Smpi fails because seq is not installed.
3759 Everything seems to work properly beside of that.
3762 - AIX version 5.3 (both contexts and pthread)
3763 Smpi still fails there because mktemp is not installed.
3764 XML inclusions seems rosty on AIX.
3766 * Windows: it's still lagging behind. If you want to help, please
3769 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
3771 SimGrid (3.3) stable; urgency=high
3775 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
3776 [Malek Cherier & Mt]
3778 * Introduce the SIMIX module: factorize code between MSG and GRAS.
3781 Until now, GRAS were using MSG as an interface to SURF. It was
3782 quite difficult because both interface have several differences
3783 (MSG channels vs GRAS sockets were the most notable point).
3785 This also opens the gate to SMPI (which should occur soon) and speed
3786 up simulations by to 40% (even if it were not the main goal).
3788 **************************************
3789 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
3790 **************************************
3791 The point is that events occurring at the exact same timestamp are
3792 not scheduled in the same order with the old and new version. This
3793 may be enough to completely change the execution of simulations in
3794 some cases. Sorry for the inconvenience.
3796 * Cleanup and upgrade the XML format to push further scalability
3797 issues (check http://hal.inria.fr/inria-00256883/ for more info)
3799 * Improve the testing infrastructure with tesh. Now a very large part of
3800 the code is tested not only by being run but also by checking that the
3801 output match an expected output [Mt].
3803 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
3804 is really less memory-demanding, which should allow you to use
3805 larger files in SimGrid [AL].
3807 * Inform valgrind about our contexts, so that it becomes usable
3808 with the default (and more effecient) version of SimGrid
3809 [contributed by Sékou Diakite, many thanks]
3812 * Introduce a listener thread in charge of receiving incoming
3813 messages from the network. It allows to overlap communication and
3814 computation but most notably, it removes some stupid deadlocks due
3815 to the fact that so far, a process could not send and receive at
3816 the same time. This made most non trivial communication schema
3818 * Convert the PIDs from long int to int to match the MSG ones (and
3819 linux ones too) [Mt]
3820 * New function: gras_agent_spawn() to launch a new process on
3821 current host. Only working in simulation for now. [Mt]
3822 * New function: gras_os_hostport() returning a constant form (ie,
3823 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
3826 * Make the backtrace of exceptions more human readable [Mt]
3827 * New module: xbt/str [Mt]
3828 a ton of string utility functions (split, join, printf to a newly
3829 allocated buffer, trim, etc)
3830 * New module: xbt/hash [Mt]
3831 SHA1 hashing algorithm (more to come if needed)
3832 * New module: xbt/synchro [Mt]
3833 synchronization tools (mutex and conditions) working the same way
3834 in simulation and in real life (mainly useful for GRAS, but not
3836 * New module: xbt/queue [Mt]
3837 classical producer/consumer synchronization scheme
3838 * xbt_dynar_new_sync() creates a synchronized dynar. All access
3839 (using the classical functions will get serialized) [Mt]
3840 * Make dictionary internal table dynamic. No need to specify its size
3841 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
3843 * Make sure the log channels are organized as a tree under windows
3844 (because of ANSI C compatibility issue, any channel were child of
3845 root directly) [Mt].
3848 * Cleaned many thing in surf and fixed a few bugs [AL].
3849 * Add a nice command line configuration mechanism to compose models [AL].
3850 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
3851 the previous one (KCCFLN05). It relies on something that looks like
3852 a max-min sharing mechanism but cannot be written as such. A new solver
3853 was thus designed [AL].
3854 * Add a new solver to lmm. Based on Lagrange optimization and
3855 gradient-based descent, it enables to efficiently maximise systems s.a
3857 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
3859 This solver enables to propose two new network models for TCP Reno and
3860 TCP Vegas based on Low's work. These models still need to be fully
3861 tested though [Pedro Velho].
3864 * Bug fix in SD_simulate. Now the time bound given as argument is
3866 * Use the new parallel task model (ptask_L07) as default.
3867 * Use the SURF command line configuration mechanism.
3868 * 0-size tasks (for synchronization) should now work.
3870 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
3872 SimGrid (3.2) stable; urgency=high
3876 We still experience issues on this platform, but we believe that at
3877 least MSG is usable.
3879 GRAS API BREAKAGE (for simplification purpose, sorry):
3880 * the gras_msgtype_by_name is not used anymore. Instead of
3881 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
3882 you can write (and must)
3883 gras_msg_send(toserver, "request", &request);
3884 - If you still want to pass a gras_msgtype_t to the function (to cache
3885 the type and avoid the lookup time), use the gras_msg_send_() variant.
3886 - Impacted functions:
3887 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
3888 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
3889 * The callbacks are now expected to return 0 when everything went well
3890 (just like the main() function)
3892 GRAS new features and improvements:
3893 * New module mechanism where user code can use per process globals [Mt]
3894 This is similar to gras_userdata_*() functions, but for libraries. It
3895 factorize some code developped over and over in the examples and AMOK.
3896 It has still to be documented and used (only amok/peermanagement is
3898 * Fix a vicious bug in the TCP buffering mechanism which leaded to message
3899 loss when they were small enough to fit into the buffer and sent quickly
3900 enough so that they can all get received in one shoot.
3901 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
3902 if not found. Use the *_or_null() variant for the old semantic.
3903 * In gras_msg_handle, do not discard messages without callback.
3904 They are probably messages to be explicitly awaited later (ie, proofs of
3905 mis-synchronization in userland since they are sent before being awaited)
3906 No big deal usually.
3907 * gras_socket_meas_send/recv: semantic changed!
3908 The numerical arguments used to be (1) the total amount of data to send
3909 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
3910 messages. This was need for the fool willing to send more than MAXINT
3911 bytes on quite fat pipes.
3914 * Do really rename the hostmanagement module to peermanagement. [Mt]
3915 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
3916 but this is rather new and this was documented in the module
3917 documentation (poor excuses, I admit)
3918 * Bandwidth measurement semantic changed! This follows the changes to
3919 gras_socket_meas_send/recv explained above.
3922 * A sequential mode has been added to the workstations. When a workstation
3923 is in sequential mode, it can execute only one task, and the other tasks
3924 are waiting in a FIFO. [Christophe Thiery]
3927 * The KCCFLN05 workstation model now handles parallel tasks. It is the
3928 model for SIMDAG. [Christophe Thiery]
3929 * Bug fix in the maxmin solver: Some values were close to 0 instead of
3930 equal to 0, which caused some bad behaviors in
3931 saturated_constraint_set_update. I now use a threshold mechanism like in
3935 * When running manually src/testall, you select specific units [Mt]
3936 testall is the result of our cunit mechanism, and should replace all
3937 the scripty thingy around since bash don't run easily on billware.
3939 * A mallocator system has been added. [Christophe Thiery]
3940 Mallocators allow you to recycle your unused objects instead of freeing them
3941 and allocating new ones.
3943 Documentation update:
3944 * FAQ reworking + New FAQs:
3945 - "Valgrind spits tons of errors!" [Mt]
3946 - "How to repport bugs" [Mt]
3947 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
3948 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
3949 - Communication time measurement within MSG [AL]
3950 - I experience weird communication times when I change the latency [AL]
3951 * GRAS tutorial [Mt]
3953 - an introduction to the framework and to the used communication model
3954 - an initiatic tour introducing the most proheminent features:
3956 . Lesson 0: Installing GRAS
3957 . Lesson 1: Setting up your own project
3958 o Part 2: Message passing
3959 . Lesson 2: Exchanging simple messages
3960 . Lesson 3: Passing arguments to the processes (in SG)
3961 . Lesson 4: Attaching callbacks to messages
3962 . Lesson 5: Using globals in processes
3963 . Lesson 6: Logging information properly
3964 . Lesson 7: Using internal timers
3965 . Lesson 8: Handling errors through exceptions
3966 . Lesson 9: Exchanging simple data
3967 . Lesson 10: Remote Procedure Calling (RPC)
3968 . Lesson 11: Explicitly waiting for messages
3969 . Recapping of message passing features in GRAS
3970 - A HOWTO section containing:
3971 o HOWTO design a GRAS application
3972 More are due, of course. They will come latter. In the meanwhile, you can
3973 check the examples which are still here.
3975 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
3977 SimGrid (3.1) stable; urgency=high
3981 There was a stack corruption somewhere, visible only when optimizing
3982 with these versions. [Vince]
3985 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
3986 module that enabled to play with Directed Acyclic Graphs. It is built
3987 directly on top of SURF and provides an API rather close to the old
3988 SG. Some old codes using SG are currently under rewrite to check that
3989 all needful functions are provided. [Christophe Thiery]
3992 * Complete rewrite of the KCCFLN05 workstation model. It is now an
3993 extension of the classical CLM03 model that gracefully handles
3994 failures. This is now the default model for MSG and GRAS. It doesn't
3995 handle parallel tasks yet though. [AL]
3996 * Bug fix: Weights were not correctly set in the network part.
3997 WARNING: This may have resulted in incorrect results with simulations
3998 where there are more than one flow on a given link. [AL]
4001 * After a (long ?) discussion on simgrid-devel, we have decided that the
4002 convention we had on units was stupid. That is why it has been decided
4003 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
4004 WARNING: This means that all previous platform files will not work as
4005 such with this version! A warning is issued to ask users to update
4007 A conversion script can be found in the contrib module of the CVS, under
4008 the name contrib/platform_generation/surfxml_update.pl [MQ]
4011 * Bug fix: Processes were started in reverse order, wrt deployment file.
4012 WARNING: if your code relies on this bug, please fix it. [AL]
4013 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
4014 being executed on two different locations. [AL]
4015 * Bug fix: Failures are now better supported thanks to Derrick's tests
4016 (there was many failure situations I hadn't thought of and that weren't
4017 correctly handled). [AL]
4018 * New function: MSG_host_is_avail indicates you whether a given m_host_t
4022 * New! a real RPC mechanism, as it ought to be since too long. [MQ]
4023 Exception occurring on server-side are propagated back to client (!).
4025 API CHANGE: the callback changed their prototype. Change:
4026 int my_handler(gras_socket_t expeditor, void *payload_data) {
4028 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
4029 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
4031 * New! function: gras_msg_handleall to deal with all messages arriving
4032 within a given period.
4033 * New! function: gras_socket_server_range to get a server socket in a
4034 range of port numbers (ease to avoid port number conflicts) [MQ]
4035 * New! gras processes display their backtrace when they get a SIGUSR1
4036 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
4037 Sweet to debug RL processes [MQ]
4041 - Do not force experiment sizes to be expressed in kb, or it becomes
4042 impossible to measure the latency this way (needs one byte-long tests)
4043 WARNING: this changes the amok_bw_* function semantic. [MQ]
4044 - Implements the link saturation stuff. [MQ]
4045 * Peer management module:
4046 New! module factorizing code that we wrote over and over [MQ].
4049 * New module: cunit (my jUnit implementation in ansi C) [MQ]
4050 - Test units are placed directly into the library code, they get extracted
4051 automatically and placed into the src/testall binary.
4052 - Convert most of the XBT tests to this system.
4053 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
4054 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
4055 live in the same C code. This required to change a little bit the API
4056 of surfxml parsing but shouldn't be an issue for end-users. [AL]
4057 * New module: sparse graph structure with basic algorithms (this is work
4058 in progress and the API is not considered to be frozen yet). [AL]
4059 * Display more information on backtraces: source line & function names are
4060 now displayed just like valgrind does (rely on addr2line tool) [MQ]
4061 * New function: xbt_backtrace_display(). Sweet while debugging [MQ]
4062 * Reworked a little bit some #include statements to load only required
4063 headers. Some user code that relied on SimGrid to include stdlib or
4064 stdio may need to include it by themselves. [AL]
4065 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
4067 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
4068 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
4069 but I guess that almost nobody used those parts. [MQ]
4071 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
4073 SimGrid (3.0.1) stable; urgency=low
4076 * Unfortunately, I had missed 5 misnamed functions:
4077 xbt_fifo_item_t xbt_fifo_newitem(void);
4078 void xbt_fifo_freeitem(xbt_fifo_item_t);
4079 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
4080 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
4081 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
4082 They're now deprecated. Please use their new versions:
4083 xbt_fifo_item_t xbt_fifo_new_item(void);
4084 void xbt_fifo_free_item(xbt_fifo_item_t);
4085 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
4086 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
4087 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
4089 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
4090 * Documentation: xbt_log module unmercifully reworked [MQ]
4091 * Bugfix: there was a problem with the ending of contexts with
4092 the pthread backend. It caused some weird deadlock or behavior
4093 depending on the pthread implementation. [AL]
4094 * Bugfix: get the exceptions raised in the simulator repport where
4095 and why they come from when they are not caught in time [AL, MQ]
4098 * Bugfix: Do repport the error when two non-connected hosts try to
4099 exchange data (Thanks to Flavien for stumbling into this one) [AL]
4102 * Add additionnal checkings on communications. Assert that two
4103 communicating hosts are connected by a set of links... [AL]
4106 * Add additionnal checkings on channel values in communication [AL]
4107 * New: MSG_task_get_source to see on which host a task was generated [HC]
4108 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
4109 the number of tasks waiting to be received on channel and sent
4111 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
4112 waits for the first task coming from a given host.. [AL]
4114 GRAS new functionnalities: [MQ]
4115 * Enhance the parsing macro to allow the size of multidimentional objects
4116 to be given thru annotations.
4117 * New example (and documentation): Matrix Multiplication a la RPC
4118 (as when I was young!) and fix a bunch of bugs found on the way.
4120 GRAS performance improvements: [MQ]
4122 * Reduce the amount of cbps creation/destruction by making it static to
4123 datadesc_send/recv() and using a (newly created) cbps_reset (based on
4126 * Change libdata to a set so that we can search for stuff by ID (and thus
4127 reduce the insane amount of dict lookups)
4130 * Actually implement gras_datadesc_copy() so that we don't have to mimick
4131 RL communication on top of SG since it's so uneffective.
4132 It may also be used for inter-thread communication in RL, one day.
4133 * Use gras_datadesc_copy() to exchange messages on top of SG
4135 - improve message exchange performance on top of SG
4136 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
4137 * Don't exchange on the network the size of the used part of buffer,
4138 instead, specify the possible buffer size to read().
4140 - reduces the amount of read/write calls (one pair per exchange)
4141 - reduces the amount of exchanged data (the size)
4142 - allows to retrieve all arrived data on receiver side, if we don't need
4143 it right now (subsequent read will peek the buffer)
4144 - allows the receiver to proceed with the beginning of the stream before
4145 everything is arrived
4146 - make it possible to build an iov transport (using readv/writev)
4148 - take care of the data with non-stable storage (like stacked data),
4150 * If possible, TCP send uses vector I/O (when writev() is here)
4151 - Don't use it for receive since we send data sizes and data on the
4152 same stream, so we wouldn't be able to chain large amount of chunks
4153 before having to flush the stuff to read the size.
4154 * Rework the transport plugin mechanism to simplify it and reduce the
4155 amount of pointer dereferencement when searching for the right function
4158 * I guess that now, we do almost as few system calls as possible while
4159 doing as few data copy as possible.
4161 To improve it further, we could try to send all the sizes first and then
4162 all the data (to use iov on receiving size), but it's only a partial
4163 solution: when you have 2 dimensional data, the sizes of the second
4164 dimension is data of the first dimension, so you need 3 streams.
4166 I'm not sure the potential performance gains justify the coding burden.
4168 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
4170 SimGrid (3.00) stable; urgency=high
4173 * New! Give the possibility to hijack the surf parser and thus bypass
4174 MSG_create_environment and MSG_launch_application. Have a look at
4175 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
4177 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
4179 SimGrid (2.96) unstable; urgency=low
4184 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
4185 This deprecates the xbt_error_t mechanisms.
4186 It modifies (simplifies) all XBT and GRAS API.
4187 MSG API keeps unchanged (exceptions raised by XBT are caught from
4188 within MSG and masked with existing error handling facilities)
4191 * New! Add a FATPIPE model. [AL]
4192 * New! Add a parallel task model. [AL]
4193 * New! Add automatically a loopback interface (in the default
4194 network model) if none was precised.
4197 * Bugfix: MSG_process_resume now works with the current running process.
4199 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
4200 * Modification of MSG_task_get_compute_duration. Once a task has been
4201 processed, the value returned by this function is now equal to 0. [AL]
4202 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
4203 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
4204 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
4205 of a m_task. For now, MSG_task_cancel only works with computation
4207 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
4208 of the processor (in Mflop/s) regardless of the current load on the
4210 * API Change: use proper naming convention for MSG_getClock and
4211 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
4213 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
4214 This function changes the priority of a computation task. This priority
4215 doesn't affect the transfer rate. A priority of 2 will make a task
4216 receive two times more cpu power than the other ones. This function
4217 has been added to suit the needs of Nguyen The Loc and hasn't been that
4218 much tested yet. So if it fails, please report it and send me your code.
4220 * API Change: removed all functions and types that were marked "deprecated"
4221 since many months. Renamed MSG_global_init_args to MSG_global_init.
4223 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
4225 SimGrid (2.95) unstable; urgency=low
4228 * Steal some nice code to GNU pth to fix context detection and usage [AL]
4229 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
4230 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
4233 * Bugfix: Allow absolute paths for platform description files [MQ]
4234 * Bugfix: do free the variables after use. Leads to drastic performance
4236 * Implement max_duration (ie, timeouts) on resources [AL]
4239 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
4241 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
4242 the needed support (timeouts) [AL]
4245 * Implement measurement sockets. You can now get the bandwidth between two
4246 hosts thanks to AMOK (see below). [MQ]
4247 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
4248 dynar over the network (yeah) [MQ]
4249 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
4250 * simple/static token-ring example. [Alexandre Colucci and MQ]
4251 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
4252 in place before [MQ]
4255 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
4256 type parsing. "short" and "long" modifiers were also ignored; other
4257 modifier (such as reference level) are still ignored. [MQ]
4258 * Embeed the buffer size within the buffer itself on SG. [MQ]
4259 That way, send() are atomic and cannot get intermixed anymore (at least
4260 the ones which are less than 100k; bigger messages still have the issue)
4261 * Array size pushed by the field, not by the field type (or each
4262 and every long int will push stuff to the cbps) [MQ]
4263 * use select() to sleep since it allows to portably sleep less than one
4266 GRAS (minor cleanups)
4267 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
4270 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
4271 * type category 'ignored' killed as it was never used and were difficult
4273 * whether a type can cycle or not is now a flag, leaving room for more
4274 flags (as "ignored", if we feel the need one day ;)
4275 * Rename raw sockets to measurement sockets since "raw" has another
4276 meaning in networking community.
4279 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
4280 and offers features not belonging to GRAS but that most applications
4281 need. One day, it may be a set of plugins loadable at runtime.
4282 * New module: bandwidth
4283 bandwidth measurement between arbitrary nodes running this module. [MQ]
4285 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
4287 SimGrid (2.94) unstable; urgency=low
4289 The first beta release of SimGrid 3 !
4293 * Update the main page and the FAQ. Adding references to gforge.
4296 * Add a gras_os_getpid function.
4299 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
4300 * Extend the logs so that they also print PID, hostname, date, ... if
4302 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
4303 and kill the old version which were in testsuite/
4304 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
4308 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
4309 for users. Instead, each programming environment (GRAS, MSG,...) use it
4310 when needed to provide such a feature to users.
4311 Don't shortcut the mechanism or you will also shortcut the virtualization
4312 you need on the simulator.
4316 * Cleanups in configury with regard to compile optimization/warning flags.
4317 Also add -fno-loop-optimize to any powerpc since it's the optimization
4318 killing gcc (< 3.4.0).
4319 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
4320 needed by MSG examples complications
4321 * Borrow configury beautifications from PHP
4324 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
4325 warning (thanks loris for stumbling into this one).
4326 * Bugfix: stop loading private headers (gras_config.h) from the public
4330 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
4331 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
4332 RL would imply a DNS resolver, which is *hard* to do in a portable way
4333 (and therefore delayed).
4334 * Implement a real timer mechanism and use it in timing macros. This allows
4335 to avoid rounding errors and get a 0.000005 sec precision in timing
4336 macros. While I was at it, various cleanups:
4337 - allow to declare more than one timed section per file (fix a stupid bug)
4338 - move some private declaration to the right place
4339 - merge conditional execution and timing macros into emulation module
4340 - document the module
4341 - make sure the module cleanups its mess on gras_exit
4342 * Documentation improvements:
4343 - (new) how to compile applications using GRAS
4344 - (new) emulation support (timing macros)
4346 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
4348 SimGrid (2.93) unstable; urgency=low
4350 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
4353 - Use Paje properly where used. Still to be sanitized properly.
4354 - Portability fix: Add an implementation of the contexts using pthread
4358 - Add xbt_procname(): returns the name of the current process.
4359 Use it to show the current process's name in all logging.
4361 - fix detection of older flex version and the reaction, since we do
4362 depend on modern ones (we use lex_destroy)
4363 - Better separation of SG and RL in the libs: remove all simulation code
4364 from libgras. As a result, this lib is now only 200k when stripped.
4365 Some of the xbt modules may also be duplicated (two sets and such) and
4366 should be cleaned/killed before SG3.
4367 - Insist on using xlC on AIX because of weird problems involving gcc there.
4368 - Cleanup the make remote stuff. This is now done by scripts
4369 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
4370 mainly for our private use, but we're working on changing them to user
4373 - Bugfix: flush the socket on close only if there is some *output*.
4374 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
4376 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
4379 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
4381 SimGrid (2.92) unstable; urgency=low
4383 Alpha 3 on the path to SimGrid 3
4387 - New! First try of benchmarking macros.
4388 - New! First try so that gras_stub_generator generate deployment and
4389 remote compilation helpers.
4391 - Bugfix: Initialization fix in msg_test.
4395 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
4397 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
4399 - API Change: gras_os_sleep to take the amount of seconds as a double.
4400 Accepting an int was error prone since it was the only location where
4401 seconds were coded as such. It leaded to damn rounding errors.
4402 - Bugfix: Hard to belive that timers ever worked before this.
4404 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
4406 SimGrid (2.91) unstable; urgency=low
4408 Alpha 2 on the path to SimGrid 3
4412 - Bug fix in the lmm_solver.
4414 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
4415 through the function MSG_paje_output.
4416 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
4417 - It is possible to bound the rate of a communication in MSG with
4418 MSG_task_put_bounded() (was already in the previous version but I had forgotten
4419 to write it in the changelog).
4420 - Bug fix to let GRAS run on top of MSG until we move it directly on top
4425 - Various cleanups to the autotools stuff
4426 - Begin to move Gras examples to examples/gras/
4427 - Let make distcheck work again (yeah!)
4429 - documentation overhauled using doxygen.
4430 gtk-doc-tools is dead in SimGrid now.
4431 - Automatically extract all existing logging categories, and add the list
4432 to the documentation (long standing one, to say the less)
4434 - Cleanup the known architecture table. Reorder the entries to group what
4435 should be, and use a more consistent naming scheme.
4436 (some of the test dataset are still to be regenerated)
4437 - New! Allow library to register globals on each process just as userdata
4439 This is implemented using a xbt_dict and not a xbt_set, so we loose the
4440 lookup time (for now).
4441 Use it in msg and trp.
4442 This cleans a lot the internals and helps enforcing privacy of the
4443 headers between the gras components.
4444 - New! Add a timer mechanism, not unlike cron(8) and at(1).
4445 - Bugfix: gras_os_time was delirious in RL.
4446 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
4448 - Reenable GRAS now that it works.
4450 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
4452 SimGrid (2.90) unstable; urgency=low
4454 Alpha 1 on the path to SimGrid 3
4456 * It is a long time since the last release of SimGrid. I'm sorry about
4457 that but as I had told you, I was rewriting a lot of things. I apologize
4458 to those who had been reporting bugs to me and that I had not answered.
4459 If your bug is still in the new version, please tell me. Here is a
4460 summary of the main changes.
4462 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
4463 lead by Martin Quinson. As a consequence SimGrid gains a lot in
4464 portability, speed, and a lot more but you'll figure it out later.
4465 SimGrid now comprises 3 different projects: MSG, GRAS and SMPI.
4466 I wanted to release the new MSG as soon as possible and I have
4467 broken GRAS, which is the reason why, for now, only MSG is fully
4468 functional. A laconic description of these projects is available
4469 in the documentation.
4471 * REVOLUTION 2: I have removed SG and I am now using a new simulation
4472 kernel optimized for our needs (called SURF but only the developers
4473 should use it). Hence, MSG is now roughly 30 times faster and I think
4474 that by rewriting a little bit MSG, I could event speed it up a little
4475 bit more. Beside the gain in speed, it is also much easier to encode a
4476 new platform model with SURF than it was with SG. More to come...
4478 * REVOLUTION 3: I have tried to change a little as possible the API of
4479 MSG but a few things really had to disappear. The main differences
4480 with the previous version are:
4481 1) no more m_links_t and the corresponding functions. Platforms are
4482 directly read from an XML description and cannot be hard-coded
4483 anymore. The same format is used for application deployment
4484 description. The new format is described in the documentation.
4485 Have a look in tools/platform_generation. There is a tiny script
4486 that converts from the old platform format to the new one. Concerning
4487 the application deployment format, parsing the old one is tricky.
4488 I think most of you should however be able to convert your files. If
4489 it is really an issue, I can write a C code that does the conversion.
4491 2) the toolbox tbx does not exist anymore. We now have a library
4492 with much more data-structures but without the hash-tables (we have
4493 dictionaries that are much faster).
4495 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
4497 *****************************************************************************
4498 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
4499 * don't feel like converting the oldies. (Mt) *
4500 *****************************************************************************
4503 Version 2.90: "the long awaited one"
4504 - Finished rewriting and debugging MSG. Rewrote the documentation.
4505 - disable GRAS for now since it needs to be ported to the newest SG
4508 - Finish the port to windows (using mingw32 for cross-compile)
4511 - Main loop and datastructures of SURF. A cpu resource object is
4512 functional. Surf can thus be used to create cpu's with variable
4513 performance on which you can execute some actions.
4515 2004-11-15 Martin Quinson
4516 - Port to ARM. Simply added the alignment and size descriptions. Should
4517 work, but the ARM machines are so slow that I didn't had the opportunity
4518 to 'make check' over there yet.
4520 2004-11-15 Arnaud Legrand
4521 - Trace manager now written. It uses a heap structure and is therefore
4522 expected to be efficient. It may however be speeded up (particularly
4523 when many events occur at the same date) by using red and black
4524 trees. One day maybe...
4525 - Max-min linear system solver written. It uses a sparse matrix
4526 structure taking advantage of its expected use. Most operations are
4527 O(1) and free/calloc are called as few as possible. The computation of
4528 the minimum could however be improved by using a red and black tree
4531 2004-11-03 Arnaud Legrand
4532 - Rename every gras_* function that was in xbt/ to its xbt_
4534 - Add a heap and a doubly-linked list to xbt
4535 - Added a dichotomy to the dictionaries. make check works as well before
4536 so I assume that the patch is correct. I do not know however if things
4537 run effectively faster than before now. :)
4539 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
4540 SimGrid, and the version number is bumped to 2.x
4542 2004-10-29 Martin Quinson
4543 - Introduction of the remote errors.
4544 They are the result of a RMI/RPC on the remote machine.
4545 ErrCodes being scalar values, you can't get the host on which those
4546 errors did happen. Extending the error mechanism as in Gnome is possible.
4547 No idea yet whether it is a good idea.
4549 2004-10-28 Martin Quinson
4550 - Interface revolution: the Starred Structure Eradication.
4551 I used to do typedef struct {} toto_t; and then handle *toto_t.
4552 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
4553 - ???_t is a valid type (builded with typedef)
4554 - s_toto_t is a structure (access to fields with .)
4555 - s_toto is a structure needing 'struct' keyword to be used
4556 - e_toto_t is an enum
4557 - toto_t is an 'object' (struct*)
4559 typedef struct s_toto {} s_toto_t, *toto_t;
4560 typedef enum {} e_toto_t;
4561 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
4562 s_toto_t) is private.
4564 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
4565 so that it can set the variable to NULL. It was so for dicts and sets,
4566 it changed for dynars.
4568 - Fix a bunch of memleaks in dict_remove
4569 - Fix a bug in sg/server_socket opening: it failed all the time.
4571 2004-10-07 Martin Quinson
4572 - Speed up dynar lookup operation a bit.
4574 gras_dynar_get is dead.
4576 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
4577 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
4578 (which gives you the address of the stored data).
4580 gras_dynar_get_as is an helpful macro which allows you to retrieve a
4581 copy of the data using an affectation to do the job and not a memcpy.
4583 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
4584 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
4586 It does not really speedup the dynar test because they are
4587 setting elements all the time (and look them seldom). But the dict does
4588 far more lookup than setting.
4590 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
4592 2004-10-05 Martin Quinson
4593 - Allow to (en/dis)able the cycle detection at run time.
4595 Whether we should check for cycle or not is now a property of each
4596 datatype. When you think there may be some cycle, use datadesc_cycle_set.
4597 datadesc_cycle_unset allow to remove this property when previously set.
4599 Note that the cycle detection is off by default since it impacts the
4600 performance. Watch the data you feed GRAS with ;)
4602 This property is hereditary. Any element embedded in a structure having it
4603 set have it set for the time of this data exchange.
4605 You should set it both on sender and receiver side. If you don't set it on
4606 sender side, it will enter an endless loop. If you forget on receiver
4607 side, the cycles won't be recreated after communication.
4609 - Header reorganization.
4610 Kill gras_private.h, each submodule must load the headers it needs.
4612 2004-10-04 Martin Quinson
4613 - Interface revolution: do not try to survive to malloc failure.
4615 Now, gras_malloc and friends call gras_abort() on failure.
4616 As a conclusion, malloc_error is not a valid error anymore, and all
4617 functions for which it was the only gras_error_t return value are
4618 changed. They now return void, or there result directly.
4619 This simplify the API a lot.
4621 2004-09-29 Martin Quinson
4622 - Re-enable raw sockets.
4623 Created by gras_socket_{client,server}_ext;
4624 Used with gras_raw_{send,recv}
4627 It should allow to kill the last bits of gras first version soon.
4629 This is not completely satisfactory yet (duplicate code with
4630 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
4633 - Simplify transport plugin (internal) interface by not passing any
4634 argument to _server and _client, but embedding them in the socket
4637 2004-09-28 Martin Quinson
4638 - Finish the port to AIX.
4639 autoconf was my problem (segfault within the malloc replacement
4640 function. No idea why)
4642 2004-09-16 Martin Quinson
4643 - Fix some size_t madness on 64bit architectures.
4645 2004-09-08 Martin Quinson
4646 - Reduce the number of system headers loaded, overload some more system
4647 calls (such as malloc to cast the result of the system one, and work
4649 - Fix and reintroduce the config support
4651 2004-09-07 Martin Quinson
4652 - Source code reorganization to allow Arnaud to surf all over there.
4653 - Allow to document the logging categories.
4654 - Remove all uppercase from logging categories and useless cleanup in names.
4656 2004-08-18 Martin Quinson
4657 Version 0.6.2 (protocol not changed; API changed)
4658 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
4659 gras_error_t), and NULL when not found. Functions expecting a msgtype
4660 as argument (msg_wait; msg_send) deal with NULL argument by providing a
4661 hopefully usefull message.
4662 - Portability to prehistoric sparcs again
4664 2004-08-17 Martin Quinson
4665 Version 0.6.1 (protocol not changed; ABI not changed)
4666 - prealloc some buffers to speed things up
4668 2004-08-11 Martin Quinson
4669 Version 0.6 (protocol not changed; ABI expended)
4670 - The parsing macro can deal with the references, provided that you add
4671 the relevant annotations (using GRAS_ANNOTE(size,field_name))
4673 2004-08-09 Martin Quinson
4674 Version 0.5 (protocol not changed; ABI changed)
4675 - Allow to off turn the cycle detection code in data exchange at
4676 compilation time. It should be at run time, but I'm short of time (and
4677 the config stuff is still broken). That way, we keep dict out of the
4678 critical path, which is good because the performance is poor:
4679 - search not dichotomial yet
4680 - dynar give no way to access their content and memcpy everytime
4681 - In composed data description (struct, ref and so on), stop foolness of
4682 keeping the subtype's ID, but store the type itself. This keeps sets out
4683 of the critical path, which is good since they rely on dynar and
4684 dictionaries. The only loose of that is that we cannot detect the
4685 redeclaration of a structure/union with another content (but I'm not sure
4686 the code detected well this error before anyway). We still can detect
4687 the redefinition discrepancy for the other types.
4688 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
4689 it breaks the code because of type-punning used all over the place).
4690 This breaks on all non-gcc architectures (for now).
4692 All those changes (plus the buffer of last time) allow me to gain 2 order
4693 of magnitude on cruel tests consisting of 800000 array of integers on two
4694 level of a hierarchical structure (200 secondes -> 4 secondes)
4697 - the selector of reference must now return the type it points to, not
4698 the ID of this type.
4700 2004-08-06 Martin Quinson
4701 Version 0.4 (protocol changed; ABI not changed)
4702 - Allow to pass --gras-log argument to processes in simulation mode. Really.
4703 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
4704 - Implement a buffer transport, and use it by default (it relies on tcp in
4705 real life and on sg in simulation).
4706 That's a bit hackish since I had a new field to the structure to store
4707 its data without interfering with the subtype ones. Inheritance
4708 is tricky in C. And that's a kind of reverse inheritance with one class
4709 derivating two classes. Or maybe a game with java interfaces. Anyway,
4710 that's damn hard in C (at least).
4711 Moreover, I got tired while trying to ensure plugin separation and
4712 genericity in SG mode. MSG wants me to do weird things, so let's go for
4713 cruel hacks (temporarily of course ;).
4714 See comment in transport_private.h:71
4715 - do not include all the _interface headers in private but in the files
4716 which really need them (to cut the compilation time when they are
4719 2004-07-26 Martin Quinson
4720 Version 0.3 (protocol not changed; ABI changed)
4721 - Major overhault of the datadesc interface to simplify it:
4722 - shorted the function names:
4723 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
4724 - add a trivial way to push/pop integers into the cbps without malloc.
4725 This allows to make really generic sub_type description, which simply
4726 pop their size of the stack.
4727 - add a function gras_datadesc_ref_pop_arr() which does what users want
4728 most of the time: Declare a dynamic array (which pops its size of the
4729 stack) and declare a reference to it. Poor name, but anyway.
4730 - kill the post-send callback, add a post-receive one
4732 2004-07-23 Martin Quinson
4733 Version 0.2 (protocol changed; ABI changed)
4734 - add some testing for cpbs in the test cases, and fix some more bugs.
4735 This invalidate again the little64 data file, since I cannot regenerate
4737 - remove an awfull optimization in the logging stuff, allowing me to:
4738 - understand it again
4739 - learn gcc how to check that the argument match the provided format
4740 - fix all errors revealed by gcc after that
4741 - internal keys of dict are not \0 terminated. Deal with it properly in
4742 loggings instead of segfaulting when the user want to see the logs :-/
4744 2004-07-22 Martin Quinson
4745 - Fix some stupid bug preventing cbps (callback postit) from working
4747 2004-07-21 Martin Quinson
4748 - Some documentation cleanups
4749 - remove the useless last argument of msgtype_declare
4750 - rename the Virtu functions to fit into the 'os' namespace
4751 - move headers src/include -> src/include/gras/ and stop fooling with
4752 gras -> . symbolic link
4753 - make distcheck is now successful
4755 2004-07-19 Martin Quinson
4757 - Build shared library also
4758 - Install html doc to the right location
4759 - stop removing maintainer files in make clean
4760 - build tests only on make check
4762 2004-07-13 Martin Quinson
4764 - No major issue in previous version => change versioning schema
4765 - Re-enable little64 convertion test now that Abdou kindly regenerated the
4766 corresponding dataset.
4768 2004-07-11 Martin Quinson
4770 - Get it working with any kind of structure (we can compute the padding
4771 bytes remotely for all the architectures I have access to)
4772 - Implement the structure parsing macro (still not quite robust/complete)
4773 - Improvement to the remote testing toysuite
4775 2004-07-10 Martin Quinson
4776 [autoconf mechanism]
4777 - get ride of a bunch of deprecated macros
4778 - actually run the test for two-compliment, not only compile it :-/
4779 - test whether the structures get packed (and bail out if yes. Damn.
4780 Alignment is a serious matter)
4781 - test whether the structures get compacted (but respecting the alignment
4782 constraints of each types)
4783 - test whether the array fields of structures can straddle alignment boundaries
4785 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
4786 (took me 2 hours to find that bug, looking at the wrong place)
4787 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
4788 before sending/receiving and are used to compute the offsets of fields
4789 - Given that padding size depend even on compiler options, keep track of
4790 alignment and aligned_size only for the current architecture. Not a big
4791 deal since we send structure fields one after the other (seems
4793 - Add the datastructure used for IEEE paper by the PBIO guys to the test
4794 program, let it work on linux/gcc/little32. portability todo.
4796 2004-07-08 Martin Quinson
4797 - import and improve remote compilation support from FAST
4798 - make sure make check works on half a dozen of machines out there
4800 2004-07-07 Martin Quinson
4801 Let's say it's version 0.0.3 ;)
4802 - Implement conversions (yuhu!)
4803 - Let it work on solaris (beside conversion, of course)
4804 - Stupid me, using rand() to generate the conversion datatests in not wise.
4806 2004-07-06 Martin Quinson
4807 - Let make dist work, since I'm gonna need it to compile on remote hosts
4808 - Let Tests/datadesc_usage write the architecture on which the file was
4809 generated as first byte.
4810 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
4811 architecture descriptions.
4812 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
4813 on those architectures.
4814 - Optimization: send/recv array of scalar in one shoot
4816 2004-07-05 Martin Quinson
4817 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
4819 - Plug a whole bunch of memleaks
4820 - each process now have to call gras_{init,exit}. One day, their log
4821 settings will be separated
4822 - Continue the code factorisation between SG, RL and common in Transport.
4824 2004-07-04 Martin Quinson
4826 - Redistribution between SG and RL.
4827 We wanna have to accept in SG, so move accepted related parts of RL in
4828 the common part. (more precisely, the dynar of all known sockets is no
4829 more a static in transport.c, but part of the process_data)
4831 [gras_stub_generator]
4832 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
4834 2004-07-03 Martin Quinson
4835 - Create a new log channel tbx containing dict, set, log, dynar (to shut
4836 them all up in one shot)
4838 - Fix the ugly case of reference to dynamic array.
4839 - New (semi-public) function gras_datadesc_size to allow the messaging
4840 layer to malloc the needed space for the buffer.
4842 - gras_socket_close now expect the socket to close (and not its address to
4843 put NULL in it after it). This is because the socket passed to handlers
4844 is one of their argument (=> not writable).
4846 - propagate the interface cleanup from last week in datadesc, ie remove a
4847 superfluous level of indirection. User pass adress of variable
4848 containing data (both when sending and receiving), and not of a variable
4849 being a pointer to the data. Let's say that I like it better ;)
4850 The price for that is constructs like "int msg=*(int*)payload" in
4851 handlers, but it's a fine price, IMHO.
4853 - Let it work in RL (yuhu)
4855 2004-06-21 Martin Quinson
4857 - porting SG plugin and SG select to new standards (works almost).
4858 - plug memleaks and fix bugs around.
4861 - cleanup the prototype of data recv and force users to specify when they
4862 want to handle references to objects. Test case working even for cycles.
4863 - plug memleaks. Valgrind is perfectly ok with this.
4865 2004-06-12 Martin Quinson
4867 - cleanup the separation between plugin and main code in plugin creation
4869 2004-06-11 Martin Quinson
4871 - Reput hook for raw sockets, needed for BW experiments
4872 - kill a few lines of dead code
4873 [Data description] Interface cleanup
4874 - gras_datadesc_by_name returns the searched type or NULL.
4875 That way, no variable is needed to use a type desc once, which makes
4877 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
4878 two parameters were strings (field name, type name), leading to
4880 [Dicos] Interface cleanup
4881 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
4882 This is consistant with the dynar API.
4884 2004-04-21 Martin Quinson
4886 - Porting to new standards.
4888 - interface cleanup.
4889 There is no bag anymore, no need to take extra provision to mask the
4890 pointers behind "ID".
4891 Better splitup of functions between files create/exchange/convert.
4892 This is still a bit artificial since convert and receive are so
4893 interleaved, but anyway.
4895 - add a queued message list to procdata (the ones not matching criteria
4897 - factorize some more code between SG and RL wrt procdata
4899 - use gras_exit in example to track memleaks
4900 - get rid of gs_example now that GS is properly integrated into gras
4901 - update run_test to integrate the latest tests (datadesc)
4903 - rename WARNINGn macros to WARNn since it prooved error-prone
4905 2004-04-19 Martin Quinson
4907 - register init/exit functions within gras module mechanism
4908 - send/receive function.
4909 Convertion is not implemented, but short-cutted if not needed.
4910 struct/array elements are sent one by one (instead of block-wise), but
4911 nobody really cares (yet). Get a prototype before optimizing.
4912 - tests (using a file socket) for DD send/receive on:
4913 - base types: int, float
4914 - array: fixed size, string (ie ref to dynamic string)
4915 - structure: homogeneous, heterogeneous
4916 - chained list, graph with cycle
4917 Believe it or not, valgrind is not too unhappy with the results. The
4918 cycle happily segfaults, but the others are ok. And I'm sick of pointers
4922 - Bugfix when using a filename explicitly (instead of '-')
4924 2004-04-09 Martin Quinson
4926 - factorize more code between RL and SG in socket creation
4927 - Complete the implementation and tests of:
4929 o file (only in RL, and mainly for debugging)
4931 I lost 3 days to design a portable address resolver, and then decided
4932 that the prototype mainly have to run on my box.
4933 Addressing portability too early may be like optimizing too early :-/
4935 - use gras_init in the Tests instead of the crappy parse_log_opt
4936 (the latter function is removed)
4937 [Conditional execution]
4938 - New functions: gras_if_RL/gras_if_SG (basic support for this)
4939 [Code reorganisation]
4940 - Get rid of libgrasutils.a since it makes more trouble than it solves.
4941 Build examples against the RL library, since there is no way to disable
4942 its creation for now.
4944 For information, the beginning of coding on GRAS was back in june
4945 2003. I guess that every line has been rewritten at least twice since