1 ----------------------------------------------------------------------------
3 SimGrid (3.28.1) NOT RELEASED YET (v3.29 expected September 22. 2021, 19:21 UTC)
6 - Non-linear resource sharing: allows to dynamically change the resource
7 capacity. Users can change this capacity by setting a callback which will
8 be called when SimGrid is sharing the resource between the active
9 activities. An activity can be a task running, a read/write IO operation or a
11 - Callback signature: double (double capacity, int n_activities): given the
12 current resource's capacity and number of activities running on it,
13 returns the new capacity.
14 - Note that this callback is in the critical path of the system solve and
15 should not take long to execute.
17 - Disk: examples/cpp/io-degradation
18 - Link: examples/cpp/network-nonlinear
19 - CPU: examples/cpp/exec-cpu-nonlinear
20 - Dynamic factors for CPU and disk: similarly to dynamic network factors,
21 allows the user to set a callback which can affect the progress of activities
22 (multiplicative factor applied when updating the amount of work remaining).
23 - Example: examples/cpp/exec-cpu-factors
26 - Added support to programmatic platform creation in Python.
27 - Several new methods were added to Python interface. For more details, see
28 the corresponding documentation.
29 - New python examples:
30 - Clusters: examples/python/clusters-multicpu
31 - Disk: examples/python/io-degradation
32 - CPU: examples/python/exec-cpu-nonlienar
33 - Link: examples/python/network-nonlinear
36 - New: s4u::Disk::set_sharing_policy() and s4u::Host::set_sharing_policy().
37 Allows the configuration of non-linear resource sharing for hosts and
42 - Multiple fixes to ensure reproducibility of tracing
43 - scan/excan can now be replayed
44 - wait action now uses ranks and not pid, as the other ones.
45 - smpi/init and smpi/finalization-barrier are now valid for replays.
48 * New section "Release Notes" documenting recent and current developments.
49 * New section "Modeling I/O: the realistic way" presenting how to properly
50 model disks in SimGrid.
51 * Improvements in API Reference for C++ and Python interfaces.
53 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
54 (FG: issues on Framagit; GF: issues on GForge; GH: issues on GitHub)
55 - FG#78: Multiple fixes for SMPI replay:
56 - TI tracing of allotallv/w was outputting wrong values
57 - MPI_LOGICAL in fortran is actually 32 bits wide, and not 8.
58 - FG#77: Search feature of doc is broken (update sphinx theme version)
59 ----------------------------------------------------------------------------
61 SimGrid (3.28) July 14. 2021
63 The Victoriadagarna Release.
66 - C++ platform interface: Users can now describe their platform directly in C++.
67 This provides greatly flexibility and performance improvement for complex
68 platforms. Main features:
69 - Fat-Tree/DragonFly/Torus composing: allows you to create clusters of
70 "zones", instead of single hosts. This feature enables the description
71 of clusters with complex hosts, composed of several CPUs, GPUs, etc.
72 - StarZone: new zone with a Star-like topology. The routes are defined
73 as a set of links used to communicate from node to everybody (node<->ALL).
74 - Split-Duplex links: auxiliary method to create split-duplex links in
75 the platform, easing its utilisation. It automatically creates both UP
76 and DOWN links (similarly as done in XML).
77 - Please refer to the documentation and the examples included:
78 e.g. examples/cpp/clusters-multicpu/ and examples/platforms/*.cpp.
79 - New plugin: Producer-Consumer with monitor. Just requires to include the
80 include/simgrid/plugins/ProducerConsumer.hpp header to be used. See the
81 associated example (examples/cpp/plugin-prodcons).
84 - New: s4u::Comm::wait_all_for() (like s4u::Comm::wait_all, but with a timeout),
85 s4u::Io::wait_any(), s4u::Io::wait_any_for().
86 - Methods test_all/test_any/wait_all/wait_any in s4u now take their vector
87 parameter by reference, instead of a pointer.
88 - Fixed a bug where Activity::wait_for() killed the activity on timeout.
89 Explicitly cancel the activity to get back to previous behavior.
90 - New: Link::set_concurrency_limit() to limit the amount of concurrent flows.
93 - The default SMPI compiler flags are no more taken from the environment.
94 They can be explicitly set through cmake parameters SMPI_C_FLAGS,
95 SMPI_CXX_FLAGS, or SMPI_Fortran_FLAGS.
97 --cfg=smpi/finalization-barrier: which can be used to add
98 a barrier inside MPI_Finalize. This can help for some codes which cleanup
99 data attached to a process, but still used in other SMPI processes.
100 --cfg=smpi/errors-are-fatal: True by default, behaves like if MPI_ERRORS_RETURN
101 is active when set to false, to keep going after a small error
102 --cfg=smpi/pedantic: True by default. Do not report some harmless MPI errors
103 which may or may not be problematic in the end.
105 - fix behaviour, as maximum iteration count could be ignored
106 - add SMPI_SAMPLE_LOCAL_TAG and SMPI_SAMPLE_GLOBAL_TAG macros, to allow user to
107 use sampling when the same kernel is called with a different set of parameters
108 which have an impact on the timing.
109 - realloc is now intercepted, to be coherent, as malloc/calloc/free were already.
110 It should now work with smpi/auto-shared-malloc-thresh.
111 - Improve error handling and reporting in multiple places
112 - Improve correctness checks on the MPI code.(MPI_Op and MPI_Datatype
113 validity checks, truncated messages are now an error, return errors
114 when explicitely deleted handles are reused, ...)
115 - RMA: multiple fixes and stability improvements.
116 - analysis (-analyze flag in smpirun):
117 - SMPI can now report buffer leaks as well as MPI handles leaks,
118 if code was compiled without SMPI_NO_OVERRIDE_MALLOC.
119 - if -trace-call-location is used when compiling, SMPI can report
120 origin of leaked handles/buffers
121 - group leaks by type/origin in output message if possible
122 - New implemented MPI calls: MPI_Comm_test_inter
125 - Changed internal implementation of bandwidth factors in network models.
126 Models affected: CM02, LV08 (default), SMPI, IB.
127 Configuration affected: "network/bandwidth-factors" and "smpi/bw-factors".
128 Bandwidth factors are applied to communications to describe that users
129 cannot use 100% of the available bandwidth. For example, the default network model,
130 LV08, applies a factor of 0.97 to the bandwidth. In older versions, this
131 behavior was implemented by limiting the bandwidth available in the LMM
132 system for this flow. This may give the false impression that there is
133 bandwidth available for other flows due to its underutilization, especially
134 for the dynamic bandwidth factors used in SMPI models.
135 To avoid this, we have modified the implementation so that each flow uses the
136 maximum physical bandwidth according to the LMM system.
137 However, the actual throughput of the flow seen by the user is defined by
138 the physical bandwidth multiplied by the bandwidth factor.
139 This change impacts on the simulation results for all network models on
140 which we have bandwidth factors configured.
141 *****************************************
142 *DO NOT MIX 3.28 RESULTS WITH OLDER ONES*
143 *****************************************
144 This change may impact on the timing of your simulation results.
145 Take care when comparing simulations from different SimGrid's
146 versions. Sorry for the inconvenience.
147 - Dynamic network factors: users can configure a callback to define
148 the network factors dynamically. This API is available at
149 simgrid::kernel::resource::NetworkModelIntf.
150 - Users have access to complete information about the current communication
151 to decide which factor to apply. This includes: message size, source and
152 destination hosts, links and zones traversed.
153 - Dynamic factors for both latency and bandwidth.
154 - For more details, see the example in (examples/cpp/network-factors).
155 - Plugin host_energy: the "watt_off" and "watt_per_state" host properties,
156 deprecated since version 3.24, are no longer supported. Instead, use
157 "wattage_off" and "wattage_per_state".
160 - xbt_assert is not disabled anymore, even when built with enable_debug=off.
163 - New tutorial: Model-checking and formal assessment
164 - New sections: "Demystifying the routing" and "C++ platforms"
165 - Update and improve the part on visualization in MPI and Algo tutorials.
166 - Improve the section on routing: how to define it, how it's used internally
167 - Fix many issues, broken links and missing references in doxygen and Sphinx
170 - Lua platform files are deprecated. Their support will be dropped after v3.31.
173 - Legacy functions deprecated in this release: SIMIX_get_clock(), SIMIX_run().
175 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
176 (FG: issues on Framagit; GF: issues on GForge; GH: issues on GitHub)
177 - FG#47: Complete and fix tests from teshuite/s4u/activity-lifecycle
178 - FG#64: Configuring smpi/IB-penalty-factors
179 - FG#67: Running computation concurrently with MPI_Iallreduce
180 - FG#69: Tutorial misleading users of pre-v3.26 versions of SimGrid
181 - FG#71: Segmentation fault on invalid gw_src/gw_dst
182 - GH#322: Issue when an actor kills his host vm
184 ----------------------------------------------------------------------------
186 SimGrid (3.27) March 29. 2021
188 The Ragnar Release (anniversary of the siege of Paris by Vikings in 845)
190 Main user-visible changes:
191 - All functions marked as deprecated for one year were removed.
192 - Removed all that was related to the "Storage" type in all APIs and bindings.
193 "Disks" have been introduced more than a year ago to replace them for the better.
194 It's time to finish this replacement.
195 - SMPI ABI breaks from previous version: MPI global handles (predefined datatypes,
196 ops, COMM_WORLD) are now defined differently, and can be used in initializers,
197 avoiding "initializer element is not constant" errors with some codes. Please be
198 careful to recompile your MPI codes if switching to this new SimGrid version.
199 - Network model ns-3 now requires version ns-3.28 or higher.
200 - Removed some option aliases that were deprecated since v3.23 (June 2019)
201 - 'verbose-exit' is now 'debug/verbose-exit'
202 - 'simix/breakpoint' is now 'debug/breakpoint'
203 - 'clean-atexit' is now 'debug/clean-atexit'
206 - New functions: Comm::sendto_{init,async} to initiate a communication
207 on between two (possibly remote) hosts.
208 - Define new template functions Mailbox::get_unique(), returning a std::unique_ptr.
209 - Functions Mailbox::get() and Mailbox::get_async() are now templated with the
210 type of the pointee. Untyped functions are deprecated. Use Mailbox::get<void>()
211 or Mailbox::get_async<void>() if you really want to play with void*.
212 - Unify the interface of Activity::on_{start/activity}
213 - New function: Comm::get_dst_data()
214 - New function: Comm::set_payload_size() to set the amount of bytes to simulate.
217 - ptask should now work better with multicore hosts (FG#37).
218 - Internal cleanups and refactoring around activities, to prepare for SimDAG++.
219 - Internal cleanups and refactoring around models, to prepare for programmatic
221 - Modernize our tests of the performance models
225 - New section: Configuring the logs from the command line.
226 - New section: Programming API of logs.
227 - New section: Getting realistic results
228 - New section: Examples of SMPI Usage
229 - New part: SimGrid's Internals, with a section on Design goals
230 - Move back to the classical Breathe tool chain, and fix many small glitches.
233 - Handle leak checking: SMPI will now display a message if MPI handles are still
234 present at the end of a simulation. Option smpi/list-leaks:n will display the n
235 first leaked pointers and their types.
236 - smpi/display-allocs option : Display Memory allocations analysis, with hints
237 about the largest allocations. This only works for allocations with malloc/calloc
238 and not compiled with SMPI_NO_OVERRIDE_MALLOC
239 - "-analyze" option in smpirun will activate smpi/display-allocs and smpi/display-timing
240 - New implemented MPI calls: MPI_File_set_size, MPI_Aint_add, MPI_Aint_diff,
241 MPI_Type_get_extent_x, MPI_Type_get_true_extent_x, MPI_Status_set_elements_x
242 - Support for MPI C++ datatypes (MPI_CXX_BOOL, MPI_CXX_FLOAT_COMPLEX,
243 MPI_CXX_DOUBLE_COMPLEX, MPI_CXX_LONG_DOUBLE_COMPLEX)
244 - Replay now opens and parses the trace file only once for all ranks when possible.
246 - better handling of MPI_PROC_NULL
247 - MPI_Group_incl was broken in some cases
248 - PAPI tracing now fixed
249 - MPI_Errhandlers are properly handled for MPI_COMM_WORLD
250 - SMPI will now fail properly when receive size < sent size, instead of
251 just setting MPI_ERR_TRUNCATE and keep going.
252 - Proxy Apps ( https://framagit.org/simgrid/SMPI-proxy-apps ):
253 - Remove useless build patches and split build/run patches on the page
254 - Build in parallel when possible
255 - Test on yum-based systems
256 - New nightly tested Proxy-apps:
257 - OpenMPI mpi-test-suite
258 - Coral MCB, LSMS, Qbox, CLOMP
259 - ECP/Mantevo Cloverleaf3D, Ember
260 - Codevault bhtree_mpi
263 - Only initialize the Dwarf parser when needed, saving 10 seconds in most cases.
264 - Start to overhaul the implementation to modernize it (still ongoing).
267 - Drop simgrid::xbt::demangle(). Please use boost::core::demangle() instead.
268 - Drop xbt_dynar_cursor_rm(), xbt_dynar_search_or_negative(),
269 xbt_str_split_quoted(), xbt_str_split_quoted_in_place().
270 - Deprecate xbt_dynar_to_array().
271 - When an exception occurs in kernel mode, display both the actor and kernel stacks.
273 C binding and interface:
274 - Rename (lowercase) functions sg_actor_get_PID, sg_actor_get_PPID, sg_actor_by_PID.
275 - Constness requirement has been lowered for parameter argv of sg_actor_start()
276 and sg_actor_create() It's now (char* const*). The previous version is still
277 available as sg_actor_start_() and sg_actor_create_().
279 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
280 (FG: issues on Framagit; GF: issues on GForge; GH: issues on GitHub)
281 - FG#37: Parallel tasks are limited to 1 core per host
282 - FG#62: Running "smpirun -replay" on large networks
283 - FG!46: Fix a few potential memory leaks in SMPI colls
284 - GH#343: Wrong consumed energy when an exec timeouts
286 ----------------------------------------------------------------------------
288 SimGrid (3.26) December 15. 2020
290 The Release release (the French lockdown was eased today).
292 Important user-visible changes:
293 - SimGrid now requires a compiler with C++14 support.
294 Sibling projects should upgrade their FindSimgrid.cmake
295 - Surf precision default value is now 1e-9, instead of 1e-5. This was changed as
296 several users had difficulties to understand issues when using high bandwidth or
297 small latency events. The new value was already the default for SMPI and
298 should not cause too much performance hit. It can change some simulation
299 timings if simulation was skipping a lot of small events (which was actually
300 an issue per see). The old value can be restored with --cfg=surf/precision:1e-5.
301 - On some network models (L07, CM02, LV08), an implicit loopback link is created
302 for local communication. Default bandwidth was 500MBps and latency was 15µs,
303 which was rather bad. Default values have been changed to 10GBps and 0 latency.
304 Options network/loopback-lat and network/loopback-bw have been added to adapt
305 these values if needed. Network and routing models already providing separate
306 loopbacks (clusters and such) are not impacted by this change.
307 - SMPI now adds 16 bytes of header to each message sent, in order to simulate
308 metadata that are added to each MPI message by MPI libraries (tag,
309 src/dest, and communicator information). This may change simulation times
310 for very small message sizes, but should be more realistic.
313 - New routing 'WiFi' that makes it easier to specify a wifi network zone.
314 - New plugins: wifi_energy and link_load. See the associated examples.
315 - New examples: wifi networks, and communication suspend.
318 - LTO is now enabled for Intel/clang compilers.
319 - LTO behavior on GCC can be parameterized using LTO_EXTRA_FLAG in cmake.
320 Setting it to "auto" will use all available cores, while setting it to n will
321 use n cores to speedup link step (usage: cmake -DLTO_EXTRA_FLAG=4).
322 - Remove obsolete runtime option 'contexts/parallel-threshold'.
323 - Runtime option 'tracing/msg/process' renamed to 'tracing/actor'. The old name
324 has been kept for compatibility.
325 - Finally remove obsolete snake_case() aliases for runtime options.
326 - Further improve the documentation.
329 - the on_exit() of each actor is also executed when the simulation deadlocks.
330 - New functions: s4u::Activity:: suspend(), resume() and is_suspended()
331 An example is provided for s4u::Comm but it should work with Exec and Io.
334 - Update proxy apps coverage of new ECP apps: 60+ apps now tested nightly on
335 https://framagit.org/simgrid/SMPI-proxy-apps
336 - MPI/IO: supports names starting with "./"
337 - Fortran: many MPI/IO bindings, support for MPI_UB/LB, C MPI_INT/FLOAT/DOUBLE
339 - smpicc/cxx/ff/f90 now will actually perform definition checks at link time. When
340 building shared libraries, this may cause issues, so environment variable
341 SMPI_NO_UNDEFINED_CHECK can be added to disable this.
342 - most temporary files should now be created in /tmp dir (or equivalent).
343 If this one does not allow execution of code (noexec flag), this may cause issues.
344 Please use another tmp directory (using TMPDIR or equivalent system variable)
348 - A large refactoring is ongoing, but this should be transparent for users so far.
351 - Drop xbt_str_split().
353 C binding and interface:
354 - The return type of the sg_actor_on_exit() callbacks is now 'void'
355 (int value was previously ignored)
356 - Many C functions were renamed to follow a common naming style
357 (sg_object_get_something and sg_object_set_something). As usual, the deprecated
358 names are kept until version 3.30.
359 - Many MSG tests were converted to the new S4U's interface in C, that
360 was extended for that.
362 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
363 (FG: issues on Framagit; GF: issues on GForge; GH: issues on GitHub)
364 - FG#41: Add sg_actor_create C interface
365 - FG#43: xbt::random needs some care
366 - FG#48: The Impossible Did Happen (yet again)
367 - FG#50: Suspending an actor executed at the current timestamp fails
368 - FG#52: Zero-seconds timeout : "That's in the past already"
369 - FG#53: Crash while using ns-3 network model
370 - FG#54: How to suspend a comm?
371 - FG!22: Stochastic Profiles
372 - FG!24: Documentation and fix for xbt/random
373 - FG!35: Add a modeling hint for parallel links in doc
374 - FG!36: [xbt/random] Read/Write the state of the RNG
375 - FG!42: Link cumulated load plugin
376 - FG!44: Test condition variable wait_until+notify_all
377 - GF#18137: Allow different stack sizes?
378 - GH#128: Parallelization of simulation with --cfg=contexts/nthreads
379 - GH#139: Allow pthread creation in SMPI
380 - GH#336: Packet-level simulation using SMPI?
381 - GH#345: Error in the LMM while migrating a VM
382 - GH#346: [SMPI] error while loading shared libraries: libsimgrid.so
383 - GH#352: pip install / python setup.py install fail to find pybind11
384 - GH!337: Fix link_energy plugin for wifi platforms
385 - GH!339: Add Mailbox set_receiver method to python binding
386 - GH!344: Cast hugepages macros parameters to int64
388 ----------------------------------------------------------------------------
390 SimGrid (3.25) February 2. 2020 (aka 02 02 2020)
392 The Palindrom Day Release.
394 Important user-visible changes:
395 - Improve the Python usability (stability and documentation).
396 - A nasty synchronization bug was ironed out, see also below.
397 - Python's doc was organized as a separate tree, now integrated with C++.
398 - C bindings of S4U were not part of the doc.
399 - The C++ doc was also improved as methods are now split by theme.
400 - Further deprecate MSG: you now have to pass -Denable_msg=ON to cmake.
401 - This is mandatory to use the Java bindings.
402 - OFF by default; The plan is to completely remove MSG by 2020Q4 or 2021Q1.
403 - SimDAG++: Automatic dependencies on S4U activities (experimental)
404 - Some features are already implemented but not all of them
405 - Cannot block an activity until it's scheduled on a resource
406 - No heterogeneous wait_any() that would mix Exec/Comm/Io activities.
407 - See examples/s4u/{io,exec,comm}-dependent for what's already there.
410 - Upgrade documented Java dependency to Java 8 (earlier versions don't work).
411 - Drop support for Viva/Triva (old visualization tools), hence removed
412 TRACE_get_node_types() and TRACE_get_edge_types() functions.
415 - Require pybind11 version 2.4.
416 - Greatly improve locking during context switches with Python.
417 - Declaring Python callbacks to this_actor::on_exit is now working.
418 - No more tests are failing currently, even on win32.
421 - Actor: Merge signals on_migration_start/end into on_host_change
422 - Actor: Rename migrate() into set_host()
423 - Disk: Allow users to get the read and write nominal bandwidth values
424 - Exec: Implement wait_for(timeout)
425 - Io: Implement wait_for(timeout)
428 - Parse errors now raise a simgrid::ParseError that you may want to catch.
431 - In simgrid::kernel::resource::Model, the methods next_occuring_event*() have
432 been renamed to fix a spelling error. As usual, the previous definitions are
433 kept with a deprecation warning. However, to avoid runtime errors, it is now
434 forbidden to override these deprecated methods in a derived class. Please use
435 the new names immediately if you need to override them.
438 - Remove unused parameter 'free_ctn' for xbt_dict_set() and xbt_dict_set_ext().
439 - Drop unused functions for dicts and dynars: xbt_dict_cursor_get_elm,
440 xbt_dict_get, xbt_dict_get_elm, xbt_dict_get_ext, xbt_dict_get_key,
441 xbt_dict_remove, xbt_dict_reset, xbt_dynar_compare, xbt_dynar_dump,
442 xbt_dynar_foreach_ptr, xbt_dynar_free_data, xbt_dynar_free_voidp,
443 xbt_dynar_init, xbt_dynar_insert_at_as, xbt_dynar_merge,
444 xbt_dynar_remove_n_at, xbt_dynar_replace, xbt_dynar_search, xbt_dynar_set.
445 - New module: random, providing classical random numbers generators.
448 - New option : "smpi/auto-shared-malloc-thresh" which sets a value for
449 allocations' size above which they are considered "shared" by default (as if
450 they were performed through SMPI_SHARED_MALLOC macros).
451 Default = 0 = disabled feature.
452 Note : malloc, calloc and free are now overridden by smpicc/cxx by default.
453 This can cause some troubles if codes are already overriding these. If this
454 is the case, defining SMPI_NO_OVERRIDE_MALLOC in the compilation flags can
455 help, but will make this feature unusable.
456 - Input check is now performed much more consistently and outputs precise
457 warnings for each error found
458 - New supported calls : MPI_File_set_view, MPI_File_get_view
459 - MPI I/O now only supports disks, as storage is discontinued.
460 - MPI I/O allows opening files without specifying absolute path
461 - Note : SMPI configuration options are now initialized by smpi_init_options()
462 call, which should be called if SMPI is not being used through smpirun.
464 Fixed bugs (FG#.. -> framagit bugs; FG!.. -> framagit merge requests):
465 - FG#9: Python bindings crashing
466 - FG#39: Missing s4u::Comm::wait_any_for example
467 - FG#42: Add support for ThreadSanitizer (TSan)
468 - FG!19: Removing RngStream
469 - FG!20: A module for RNG calls
470 - FG!21: Choice between ad-hoc and standard distributions implementations
472 - FG!25: Fix link in Mutex doc
473 - FG!26: Fix links in SMPI interface doc
474 - GH#31: [MC] please provide an option to make MPI_Send asynchronous
475 - GH#305: Unscheduled tasks are still excuted
476 - GH#313: smpirun: manual outdated w.r.t. --help
477 - GH#321: [S4U] Get task remaining work ratio
478 - GH#323: Crash when an actor turn off his physical host
479 - GH#335: Missing links on dragonfly example svg
480 - https://lists.gforge.inria.fr/pipermail/simgrid-user/2019-November/004653.html:
481 MPI_Cart_sub was not working properly. Kudos to Jonathan Borne for the report.
483 ----------------------------------------------------------------------------
485 SimGrid (3.24) October 9. 2019
487 The Clean Disk Release.
490 - Introduce a s4u::Disk interface to manage the newly introduced <disk>
491 tag. s4u::Disk is called to supplant s4u::Storage in a near future. It
492 thus becomes the default resource to execute I/O operations. Examples
493 and the file system plugin have been modified to use disks instead of
494 storage elements. Storage can still be used but is doomed to disappear.
495 Users are thus adviced to update their simulators accordingly.
496 - Barrier::wait returns SG_BARRIER_SERIAL_THREAD for (only) one actor
497 for consistency with pthread_barrier_wait()
498 - Host::get_englobing_zone() returns the englobing netzone
499 - Actor::on_destruction is now called in the destructor
500 Actor::on_termination new signal called when the actor terminates
502 - Global signals are now part of the Engine:
503 - on_platform_creation: after config settings, before the XML parsing
504 - on_platform_created: right after the XML parsing
505 - on_time_advance: each time the clock advances
506 - on_simulation_end: after simulation, before cleanups
507 - on_deadlock: as the name implies.
509 - sg_{actor,host,link}_{data,data_set}() now all exist.
510 Use them to attach user data to the object and retrieve it.
513 - Introduce an experimental Wifi model. It sounds reasonable
514 according to the state of the art, but it still has to be properly
515 validated, at least against ns-3 if not against reality.
516 - Improved the usability of ns-3. Several bugs were ironed out.
517 - host_energy: Wattage was expressed as 'idle:oneCore:allCores'.
518 It is now expressed as 'idle:epsilon:allCores' to properly model the
519 consumption of non-whole tasks on mono-core hosts. More info in the doc.
522 - convert a new set of functions to the S4U C interface and move the old MSG
523 versions to legacy (MSG_process_self*, MSG_process_{un}ref, ...)
526 - Fortran bindings for DVFS have been removed.
527 - Add support for MPI_Irsend, MPI_Rsend, MPI_Rsend_init, MPI_Bsend,
528 MPI_Ibsend, MPI_Bsend_init, MPI_Buffer_attach, MPI_Buffer_detach
529 - SMPI can now be selected by cmake's find_module(MPI) with
530 MPI_C_COMPILER, MPI_CXX_COMPILER, MPI_Fortran_COMPILER variables.
531 - Add support for MPI Errhandlers in Comm, File or Win. Default errhandler is now
532 MPI_ERRORS_ARE_FATAL, so codes which were sending warnings may start failing.
533 - trace-call-location can be used with TI traces, and replayed, and is compatible
534 with smpi/comp-adjustment-file.
535 - sleep events are now correctly traced/replayed.
536 - Default for trace-call-location is now to use file names and not full paths.
537 To revert to previous behavior (in case of collision of filenames), option
538 "smpi/trace-call-use-absolute-path" can be set to yes.
541 - Use the included xxHash as an hash implem when C++14 is usable.
542 - Option model-checker/hash was removed. This is always activated now.
543 - New option smpi/buffering controls the MPI buffering in MC mode.
544 - MPI calls now MC_assert() that no MPI_ERR_* code is returned.
545 This is useful to check for MPI compliance.
548 - New section on plugins: how to define a new one, and existing ones.
551 - xbt_mutex_t and xbt_cond_t are now marked as deprecated, a new C interface
552 on S4U is already available to replace them by sg_mutex_t and sg_cond_t.
555 - Introduce the <disk> tag as a replacement of the <storage>, <storage_type>,
556 and <mount> tags. The rationale is finish to decouple what should be handle
557 by SimGrid kernel (i.e., resources and activities) from plugins built in
558 user space (e.g., the file system plugin). This new tag currently accepts
559 only three attributes (id, read_bw, and write_bw). All the other information
560 that was declared with the storage related tags now has to be expressed as
561 properties. An example of platform using this new tag is available at
562 examples/platforms/hosts_with_disks.xml
565 - 'expect signal' can now accept more than one potential signal.
567 Fixed bugs (FG#.. -> framagit bugs; FG!.. -> framagit merge requests):
568 - FG#28: add sg_actor_self (and other wrappers on this_actor methods)
569 - FG#29 and FG#33: provide a new C API to mutexes and condition variables
570 - FG#30: convert MSG_process_{un}ref to sg_actor_{un}ref
571 - FG#31: per-actor data
572 - FG#34: SG_BARRIER_SERIAL_THREAD?
573 - FG#35: model-checker does not like buster-produced binaries
574 - FG!13: MC: complete workaround in the error msg seen on modern systems
575 - FG!15: execute_flops now logs compute
576 - FG!16: Fix the ns-3 bindings when several flows are simultaneously finishing
577 - FG!17: ns-3: unblock the right number of communications + others issues
578 - FG!18: Improving the performance of the ns-3 bindings
579 - GH#189: Energy consumption of parallel tasks
580 - GH#219: Error in the throughput of TCP transfer
581 - GH!330: Minor polishing of English: Configuring_Simgrid
582 - GH!331: Fix a doc error about actors (Tutorial_algorithms)
583 - GH!332: Add '-O0' flag for: cmake -DCMAKE_BUILD_TYPE=Debug
584 - GH!334: Rework energy plugin, again
586 ----------------------------------------------------------------------------
588 SimGrid (3.23.2) July 8. 2019
591 - Nicer introduction page.
592 - Migrate the "Deploy your application" page to the new doc.
593 - Move Java as a subtree of MSG.
596 - Rename simgrid::TimeoutError to simgrid::TimeoutException.
599 - Drop xbt_dynar_sort_strings().
602 - Really fix FG#26: Turning off a link should raise NetworkFailureException
603 - FG#27: Wrong exception thrown to wait_any when link is turned off
604 - GH#328: Java: Canceling multiple tasks in a single vm/host
606 ----------------------------------------------------------------------------
608 SimGrid (3.23) June 25. 2019
610 The Exotic Solstice Release.
613 - SunOS and Haiku OS support. Because exotic platforms are fun.
614 - Stop setting random seed with srand48() at initialization.
615 - Use addr2line as a fallback for stacktraces when backtrace is not available.
616 - Build option -Denable_documentation is now OFF by default.
617 - Network model 'NS3' was renamed into 'ns-3'.
620 - Simgrid can now hopefully be installed with pip.
623 - wait_any can now be used for asynchronous executions too.
626 - New log appenders: stdout and stderr. Use stdout for xbt_help.
627 - Drop xbt_dict_dump.
630 - 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
631 - MPI/IO is now supported over the Storage API (no files are written or read, storage is simulated). Supported calls are all synchronous ones.
632 - MPI interface is now const correct for input parameters
633 - MPI_Ireduce, MPI_Iallreduce, MPI_Iscan, MPI_Iexscan, MPI_Ireduce_scatter, MPI_Ireduce_scatter_block support
634 - Fortran bindings for async collectives.
635 - MPI_Comm_get_name, MPI_Comm_set_name, MPI_Count support.
638 - Remove option 'model-check/record': Paths are recorded in any cases now.
639 - Remove option 'model-check/sparse-checkpoint': Checkpoints are now
640 always sparse. That's an immense gain in memory, and can even be
641 faster because of cache effects. So there is no need to clutter the
642 code to allow the user to go for the unefficient mode.
645 - Remove the lagrange-based models (Reno/Reno2/Vegas). The regular
646 models proved to be more accurate than these old experiments.
648 Fixed bugs (FG=FramaGit; GH=GitHub -- Please prefer framagit for new bugs)
649 - FG#1: Broken link in error messages
650 - FG#2: missing installation documentation
651 - FG#3: missing documentation in smpirun
652 - FG#6: Python bindings not available on PyPI
653 - FG#7: simple cmake call requires doxygen
654 - FG#8: make python bindings an optional dependency
655 - FG#10: Can not use MSG_process_set_data from SMPI any more
656 - FG#11: Auto-restart actors forget their on_exit behavior
657 - FG#12: -Denable_lto=OFF doesn't disable LTO
658 - FG#13: Installs unstripped file 'bin/graphicator'
659 - FG#14: Installs the empty directory 'doc/simgrid/html'
660 - FG#15: Setting -Denable_python=OFF doesn't disable the search for pybind11
661 - FG#17: Dead link in doc (pls_ns3)
662 - FG#20: 'tesh --help' should return 0
663 - FG#21: Documentation link on http://simgrid.org/ broken
664 - FG#22: Debian installation instruction are broken
665 - FG#26: Turning off a link should raise NetworkFailureException exceptions
666 - GH#133: Java: a process can run on a VM even if its host is off
667 - GH#320: Stacktrace: Avoid the backtrace variant of Boost.Stacktrace?
668 - GH#326: Valgrind-detected error for join() when energy plugin is activated
670 ----------------------------------------------------------------------------
672 SimGrid (3.22) April 1. 2019
674 The Easter Christmas Release (this one is somewhat late).
677 - We are excited to introduce the SimGrid/S4U interface to your neighborhood
678 - Not complete yet: asynchronous activities (amongst others) are still missing
679 - Still ongoing: the interface may change in the future. We need more
680 testers! Please report any glitches.
681 - No new project using Java should start now. Please switch to Python.
684 - Some of the internal cleanups may lead to speed improvements:
685 - The hard limitation on the amount of simulated actors with
686 Java+Mac was removed. Now, the available memory is the only limit.
687 - Our refcounting was tidyied, leading to 10% speedups in some cases.
688 - We are still working on making our code robust to the actor kills
689 and hosts' churn. Things are improving, but it's not perfect yet.
690 - Replaced our own code to display a backtrace (that was forking addr2line)
691 with the Boost.Stacktrace library.
692 You won't see your backtraces without this optional dependency.
693 - Bump cmake dependency to 3.5 (provided by Ubuntu 16.04).
694 - Stop setting random seed with srand() at initialization.
697 - In <host> and <peer>, 'availability_file' is now 'speed_file'.
698 XML file version remains 4.2 since old files are still compatible.
701 - Process termination which was broken at version 3.21 has been repaired.
702 - Expose host load plugin: loadInit, getCurrentLoad, getComputedFlops, getAvgLoad
703 - Hide the examples into examples/deprecated. New users should use Python.
706 - Drop MSG_process_create_from_stdfunc() from the API.
707 This C++ function was a pimple in the C API, made necessary at some
708 point by the Java bindings. This is fixed now.
709 - Hide the examples into examples/deprecated. New users should use S4U.
710 - MSG_process_create and MSG_process_attach now crash if the host used
711 to run this process is off.
712 - Fix the protype of MSG_process_on_exit()
713 Now use (int,void*) callbacks instead of (void*,void*) ones.
714 The implementation was ways too messy to actually work, I guess.
717 - Change the way SMPI_SAMPLE_* macros work to avoid invalidating cache
718 too often and provide more accurate timings.
719 - Add -gdb, -lldb, and -vgdb shortcuts to help debug MPI codes with smpirun
720 - MPI_Alltoallw support
721 - Partial MPI nonblocking collectives implementation: MPI_Ibcast, MPI_Ibarrier,
722 MPI_Iallgather, MPI_Iallgatherv, MPI_Ialltoall, MPI_Ialltoallv, MPI_Igather,
723 MPI_Igatherv, MPI_Iscatter, MPI_Iscatterv, MPI_Ialltoallw.
724 - MPI_Request_get_status, MPI_Status_set_cancelled, MPI_Status_set_elements
726 - Basic implementation of generalized requests (SMPI doesn't
727 allow MPI_THREAD_MULTIPLE) : MPI_Grequest_complete, MPI_Grequest_start
730 - Drop sg_cmdline. Please use xbt_cmdline instead.
731 - Drop the C xbt_os_mutex_t; Use the C++11 std::mutex.
732 - Drop the C xbt_os_sem_t; Use the C++ xbt::OsSemaphore.
733 OsSemaphore is implemented in a portable way with C++11 threads.
734 This should allow much more threads to be created at the same time,
735 allowing Mac and Java users to simulate many more actors.
736 - Implement the 'thread' factory with std::thread instead of xbt ones.
737 It is not possible to set the stack size with threads anymore, but
738 -fsplit-stack is the way to go nowadays when using threads.
739 - Drop the xbt_os_thread_t module (now unused)
740 - Drop xbt_ex_display(), use simgrid::xbt::log_exception() instead.
741 - Drop xbt_str_join_array().
742 - Drop cunit, use Catch2 instead.
745 - Many cleanups in the kernel::activity namespace. This was long
746 overdue, and shall open the path to many future endeavors.
749 - #132: Java: a process can not shut down its own host
750 - #220: S4U: detached send causes exception if sender terminates soon after sending
751 - #261: Document the parameters of parallel execution's constructor
752 - #300: [s4u] BarrierPtr is missing
753 - #314: SMPI args internal cleanup
754 - #316: Fix a bug related to the CPU utilization of multi-core VM
755 - #318: Invalid trace file when using option --cfg=tracing/smpi/display-sizes:yes
756 - #324: S4U: Attempting to create an actor on turned off host segfaults instead of throwing
757 - #325: Turning off a host has different behavior on sleeping actors and computing actors
759 ----------------------------------------------------------------------------
761 SimGrid (3.21) October 3. 2018
763 The Restarting Documentation (TRD) Release.
766 - Convert the user manual to Sphinx for improved usability.
767 Unstable version now hosted on https://simgrid.frama.io/simgrid
768 Many glitches remain; stay tuned.
769 - Restrict the Doxygen reference API to the installed header files.
770 (documenting all internals this way is overkill + doxygen scales badly)
771 - New tutorial on S4U (highly inspired from the old MSG one, but with
772 a git repository to fork as a starting point, and a docker image)
773 - Started but not finished an SMPI tutorial inspired from the JLPC'14 one.
774 - The Developper manual is still to be converted (not compiled until then)
775 - Some parts are still missing in this conversion (such as the
776 platform and deployment sections) while others were blindly converted
777 and would need more love (such as the configuration flags).
778 Things will certainly further improve in the future releases.
781 - Fully reimplement auto_restart mechanism that was utterly broken
782 (fix #22, #131 and #281 that were all very related)
783 - Implement semaphores (fix #303 and #291)
784 - When creating an actor from a function and its parameters,
785 move-only parameters are not allowed anymore, as it would prevent
786 the actor to be restartable if its parameters are consumed on run.
787 - s4u::Io: IOs go asynchronous as activities. New methods in s4u::Storage:
788 - io_init(sg_size_t, s4u::Io::OpType) to create a READ or WRITE asynchronous
789 IO operations that can be started, waited for, or canceled as a regular
791 - read_async(sg_size_t) and write_async(sg_size_t) which are wrappers on
795 - Rename 'power' and 'power_used' variables into 'speed' and 'speed_used'
796 - New host variable: 'core_count'
799 - Remove xbt_os_thread_specific features
800 - Remove portability wrapper to condition variables
801 - Remove xbt_os_thread_yield()
804 - MPICH collective selector now mimics MPICH 3.3b
805 - OpenMPI collective selector now mimics OpenMPI 3.1.2 (default "tuned" setting)
806 - MPI_Init(NULL,NULL) is now allowed
807 - smpi/wtime option now injects time in gettimeofday or clock_gettime calls
808 - Command-line arguments should now be handled properly in Fortran simulations
809 - MPI Attributes and related callbacks should work in Fortran
810 - Apps using C + Fortran should now work
811 - MPI_* calls now check for non MPI_SUCCESS return values and emit warnings
812 - Support MPI_Error_String
815 - Due to an internal bug, Msg.run() must now be your last line.
816 We hope to fix it in a future release, and we are sorry for the inconvenience.
819 - #22: Process autorestart seem to only work with CAS01 cpus
820 - #56: Feature request: dynamic SMPI replay
821 - #93: simgrid should not eat --help
822 - #111: How to change the loopback link characteristics?
823 - #116: Platform cluster radical
824 - #117: Platform cluster/host order
825 - #129: Replay_multiple on steroid
826 - #131: Java : autostart does not work
827 - #143: Setting a breakpoint at a given time
828 - #235: Network energy models should be integrated
829 - #264: Add ptask L07 resource tracing
830 - #271: Dynamic and manual replay of SMPI traces
831 - #279: Breakpoints option uses time deltas instead of absolute time
832 - #281: Daemonized actor no longer daemonized after an auto-restart
833 - #282: TIT convertor erase traces when using absolute path in the trace list file
834 - #285: segfault when a s4u actor kills itself with msg process tracing activated
835 - #286: Pajé traces are not exposing the number of cores
836 - #287: Command-line parsing should stop when encountering '--'
837 - #288: MPI_Init(NULL, NULL)
838 - #289: Improve documentation of Actor::on_destruction and this_actor::on_exit()
839 - #290: Method to check if a mailbox has a message ready to be consumed
840 - #291: [s4u] semaphores do not seem available yet
841 - #294: Alltoall collective implementation of mpich
842 - #295: Starting a Host as OFF is not supported
843 - #296: DTD too permissive
844 - #299: Add a s4u barrier example
846 ----------------------------------------------------------------------------
848 SimGrid (3.20) Released June 24. 2018
850 The proxy snake_case() release.
853 - The whole API is now using snake_case() instead of mixing it with camelCase.
854 Compatibility wrappers in place for one year.
855 - We took the opportunity to increase the consistency of the API.
856 Please report any remaining glitches.
857 - New function simgrid::s4u::Host::get_actor_count:
858 Returns the number of actors running on a specific host.
861 - SMPI is now tested with ~45 proxy apps from various sources, with none or
862 only minor patching needed: check https://github.com/simgrid/SMPI-proxy-apps
863 - Replay: The replay file has been re-written in C++.
864 - Replay: Tags used for messages sent via MPI_Send / MPI_Recv are now
865 supported. They are stored in the trace and used when replayed.
866 - Basic support of MPI_Cancel. Robustness not guaranteed.
867 - Support of MPI_Win_allocate_shared, MPI_Win_shared_query, MPI_Comm_split_type
868 (only for MPI_COMM_TYPE_SHARED).
869 - New option: smpi/privatize-libs, to add external shared libs to be privatized
870 by SMPI. They will be copied locally and loaded separately by each process.
871 Example --cfg=smpi/privatize-libs:"libgfortran.so.3;libscalapack.so".
872 - Tracing: add tracing for MPI_Start, Startall, Testall, Testany
873 - Interception of getopt, getopt_long and getopt_long_only calls to avoid issues
874 with internal index optind with multiple processes. Only works if MPI_Init has
876 - Fortran: SMPI builds a mpi.mod file which should allow use of "use mpi"
877 syntax without preprocessing tricks.
880 - Change --cfg=tracing/msg/vm to --cfg=tracing/vm as virtual machine
881 behavior tracing is no longer limited to MSG
882 - TIT (Time Independent Traces): We finally support tags. Unfortunately,
883 this means that traces now need to be updated or re-obtained; both Irecv
884 and Isend lines in your traces have now in total 5 mandatory fields:
885 <rankid> <command> <to/from rankid> <tag> <size>
886 To update your traces, it suffices to add a 0 for the tag here.
887 - TIT now also supports waiting for a distinct request via MPI_Wait.
888 Wait/Test now wait for a specific request, not just the last one that was
889 issued. This unfortunately means another update, because we need to
890 identify which request you want to wait for. We do this via the
891 triplet (sender, receiver, tag), which needs to be added:
892 <rankid> <command> <sender> <receiver> <tag>
893 - Actions are now in lower case (e.g., "allReduce" becomes "allreduce").
894 New script simgrid_convert_TI_traces.py: upgrade your TI traces.
897 - The deprecation of MSG is ongoing (but this should not impact you).
898 Many MSG functions are now simple wrappers on the C API of S4U. If
899 you wish to convert your code to S4U, find the S4U counterparts of
900 your MSG calls in src/msg/msg_legacy.cpp.
901 - MSG can still be used, but won't evolve anymore.
904 - Allow to run the Link energy plugin from the command line with
905 --cfg=plugin:link_energy
906 - Rename Energy plugin into host_energy
907 - Rename Load plugin into host_load
910 - Add parameter --cfg=simix/breakpoint to raise a SIGTRAP at given time.
911 - kill simix::onDeadlock() that was somewhat dupplicating s4u::on_deadlock()
912 - Improve performance when handling timeouts of simix synchros.
915 - Config: the C API is now deprecated (will be removed in 3.23), and
916 the C++ API has been slightly improved.
919 - Fix several build issues on OSX.
920 - Move simgrid_config.h to simgrid/config.h (old header still working)
923 - #143: Setting a breakpoint at a given time
924 - #150: Inconsistent event names in SMPI replay
925 - #258: daemonized actors hang after all non-daemonized actors have completed
926 - #267: Linker error on unit_tmgr
927 - #269: SMPI: tracing of MPI_Wait/all/any broken
928 - SMPI: Fix various crashes with combined use of MPI_PROC_NULL and MPI_IGNORE_STATUS
930 ----------------------------------------------------------------------------
932 SimGrid (3.19.1) Released March 22 2018
934 The Fixed ABI Release.
936 As you may know, we are currently refactoring SimGrid in deep.
937 Upcoming SimGrid4 will be really different from SimGrid3: modular,
938 standard and extensible vs. layered, homegrown and rigid. C++ vs. C.
940 Our goal is to smooth this transition, with backward compatibility
941 and automatic update paths, while still progressing toward SimGrid4.
943 SimGrid remains open during works: The last pure SimGrid3 release was
944 v3.12 while all subsequent versions are usable alpha versions of
945 SimGrid4: Existing interfaces remain unchanged, but the new S4U
946 interface is budding and the internals are deeply reorganized.
948 Since 2015, we work hard to reduce the changes to public APIs. When
949 we need to rename a public library symbol in S4U, we let your
950 compiler issue an explicative warning when you use the deprecated
951 function. These messages remain for four releases, i.e. for one full
952 year, before turning into an error. Starting with v3.15, your can
953 also adapt to API changes with the SIMGRID_VERSION macro, that is
954 defined to 31500 for v3.15, to 31901 for v3.19.1 and so on.
956 Starting with this v3.19.1, our commitment to reduce the changes to
957 the public interfaces is extended from the API to the ABI: a program
958 using only MSG or SimDag and compiled against a given version of
959 simgrid can probably be used with a later version of SimGrid without
960 recompilation. We will do our best... but don't expect too much of
961 it, that's a really difficult goal during such profund refactoring.
963 The difference between v3.19 and v3.19.1 is that the former was
964 accidentally breaking the ABI of MSG, while the later is restoring
967 S4U and kernel APIs will still evolve until SimGrid4, with one-year
968 deprecation warnings as currently. In fact, cleaning up these
969 interfaces and converting them to snake_case() is one release goal of
970 v3.20. But don't worry, we are working to smooth this upgrade path.
972 In summary, new projects should start with S4U to benefit of the
973 future, but old MSG projects should still be usable with no change.
975 ----------------------------------------------------------------------------
977 SimGrid (3.19) Released March 20 2018
979 The Moscovitly-cold Spring release.
981 SMPI user-visible improvements:
982 - Support of MPI_Type_create_subarray
983 - Unimplemented MPI calls now abort (instead of issuing a warning)
984 Some harmless calls around errhandlers still only issue a warning.
985 - MPI_Sendrecv was behaving badly when MPI_PROC_NULL was sender or receiver.
986 - Starting MPI ranks (or even MSG/S4U actors) once the simulation started
987 is now possible (mmap privatization was refactored to this end).
988 Adding new SMPI instances should also be technically doable now.
990 SMPI internal cleanups:
991 - Removed index notion from SMPI -- no more "getPid() - 1"!
992 In tracing files, actors are called rank-<PROCESS-ID> but these are
993 NOT the real ranks (tracing several communicators is not supported yet).
994 - Deprecate smpi_process_index() (will be removed in 3.22)
995 - Better testing on classical proxy apps, through an external project:
996 https://github.com/simgrid/SMPI-proxy-apps/
999 - Use a graphical TOC to make it easier to find the documentation you need
1000 - Revamp the MSG tutorial
1003 - Fix MSG_task_get_remaining_work_ratio(): return 1.0 for unstarted tasks.
1004 - Remove parameter of MSG_process_killall().
1005 Resetting the PID was bogus anyway (several actors could have the same PID).
1008 - Execution->setHost() can be called after start(), to migrate it.
1009 - Comm::test_any() is now implemented.
1010 - s4u::Actor now has onCreation() and onDestruction() signals.
1011 - Install some kernel header files for the users' plugins and more.
1012 Warning, their API is really not stable yet.
1013 include/simgrid/kernel/resource/{Action,Resource,Model}.hpp
1014 include/simgrid/kernel/routing/*Zone.hpp
1017 - SD_task_dependency_add(): remove unused parameters 'name' and 'data'.
1019 Build System and other cleanups:
1020 - Remove unused run-time parameter "tracing/onelink-only".
1021 - SimGrid now works with intel compilers (MC still buggy)
1022 - Remove XBT_LOG_CONNECT, it should be useless nowadays.
1023 - tesh kills subprocesses on timeout (but not on windows)
1026 - Rename FULLDUPLEX into SPLITDUPLEX (old name still accepted)
1029 - #194: Feature request: simgrid::s4u::Comm::test_any()
1030 - #245: migrating an actor does not migrate its execution
1031 - #253: Feature Request: expose clusters as objects
1032 - #254: Something seems wrong with s4u::Actor::kill(aid_t)
1033 - #255: Tesh broken on Windows
1034 - #256: Modernize FindSimGrid.cmake
1035 - #257: Fix (ab)use of CMake install
1037 ----------------------------------------------------------------------------
1039 SimGrid (3.18) Released December 24 2017
1041 The "Ho Ho Ho! SimGrid 4 beta is coming to town" release.
1043 MSG IS NOW DEPRECATED. Please use S4U for new projects.
1044 - Support for MSG should not be removed from SimGrid before 2020,
1045 but future evolutions will be limited to the integration of
1046 user-provided patches.
1049 - s4u::onDeadlock() signal, run before stopping the simulation.
1050 - s4u::Exec: asynchronous executions (abstraction of background
1052 - s4u::Host->getLoad() returns the achieved speed in flops/s
1055 - Link::name() is deprecated and will be removed in v3.21, use
1056 Link::getCname() instead.
1057 - Mailbox::getName() changed to return a std::string, use
1058 Mailbox::getCname() instead to get a char*.
1059 - Storage::getName() changed to return a std::string, use
1060 Storage::getCname() instead to get a char*.
1061 - s4u::allStorages() becomes s4u::getStorageList(whereTo)
1062 to have both allocation and deallocation of the map in user space.
1065 - Forbid the use of MSG_task_get_flops_amount() on parallel tasks:
1066 The amount of flops remaining to do is a vector, not a scalar.
1067 - Introduce MSG_task_get_remaining_work_ratio(), which does what its
1068 name implies on both sequential and parallel tasks.
1069 - Both changes fix GitHub's #223 using PR #237 as a basis.
1070 Thanks Michael Mercier.
1071 - Most examples were converted to S4U and hidden elsewhere at tests.
1072 Rationale: we still want MSG to work; we want newcomers to use S4U.
1075 - LMM stuff moved to its own namespace: simgrid::kernel::lmm.
1076 - Renamed LMM classes (e.g. s_lmm_system_t -> System).
1079 - Switch to the faster dlopen privatization mechanism by default
1080 - Documentation improvments
1083 - Live migration is getting moved to a plugin. Dirty page tracking is
1084 the first part of this plugin. This imply that VM migration is now
1085 only possible if one this function is called:
1086 - C/MSG: MSG_vm_live_migration_plugin_init()
1087 - C/C++: sg_vm_live_migration_plugin_init()
1088 - Java: Msg.liveMigrationInit()
1089 For C and C++, "simgrid/plugins/live_migration.h" also has to be
1093 - Define class simgrid::xbt::Path to manage file names.
1094 - Removed unused functions:
1095 - xbt/file.h: xbt_basename(), xbt_dirname(), xbt_getline()
1096 - xbt/graph.h: xbt_graph_edge_get_length(), xbt_graph_edge_set_length,
1097 xbt_graph_export_graphviz()
1098 - xbt/str.h: xbt_str_join()
1099 - Remove unused datatypes:
1100 - xbt/heap.h: use std::priority_queue or boost::heap instead
1101 - xbt/swag.h: use boost::intrusive::list instead
1104 - New link_energy plugin for the consumption of the links.
1105 - All of the operations on files and storage contents have been
1106 packaged into a plugin (src/plugins/file_system). The current
1107 public interface can be found in
1108 include/simgrid/plugins/file_system.h
1109 To use these functions you now have to initialize the plugin by
1110 calling MSG_storage_file_system_init() just after calling
1111 MSG_init() or sg_storage_file_system_init() just after creating
1115 - Remove the undocumented/untested tag <include>
1118 - Remove viva specific tracing as the tool is no longer maintained
1121 - #248: Kill of finished processes leads to segfault
1122 - #240: xbt_cond_wait_timeout should gracefully return for C apps
1123 - #239: please implement signal s4u::onDeadlock()
1124 - #230: segfaults when exit() without run()
1125 - #225: s4u::Actor::kill() doesn not really kill victims in a join()
1126 - #223: MSG_task_get_flops_amount() not working with parallel tasks
1127 - #222: Actor::kill() doesn't really kill and segfaults
1128 - #221: odd LMM warning when killing an actor
1129 - #120: Memory leak when the processes are forcefully killed
1131 ----------------------------------------------------------------------------
1133 SimGrid (3.17) Released October 8 2017
1135 The Drained Leaks release: (almost) no known leaks despite the tests.
1137 Even very long simulations will preserve your memory: our testsuite
1138 stresses SimGrid for over 45mn on fast machines for a coverage of
1139 over 80%, and there is only one single known leak, of about 4kb.
1143 - Comm.detach(): start and forget about asynchronous emission. A cleanup
1144 handler may be given to free resources if the comm cannot be completed.
1145 - this_actor::send(mailbox) is now mailbox->put()
1146 - New: simgrid::s4u::Comm::wait_all()
1147 - New: Host.execute() for remote executions.
1150 - Unused option network/sender-gap is removed.
1153 - Deprecate MSG_task_isend_with_matching(): This unused feature
1154 really complicates our internals. Will be removed in v3.20.
1157 - Improved context termination. It is now possible to free resources, even
1158 when a process is forcibly killed.
1159 - ContextBoost: add support for Boost versions above 1.61.
1162 - Bring back run-time option --cfg=exception/cutpath to remove exception
1164 - Removed unused functions:
1165 - xbt/str.h: xbt_str_split_str(), xbt_str_subst(), xbt_str_ltrim(),
1166 xbt_str_rtrim(), xbt_str_trim().
1167 - xbt/xbt_os_thread.h: xbt_os_thread_cancel(), xbt_os_thread_detach().
1170 - Removed header files obsolete since SimGrid 3.12:
1171 msg/datatypes.h, msg/msg.h, simdag/datatypes.h, simdag/simdag.h.
1173 - #3: SD_exit should be made optional
1174 - #120: Memory leak when the processes are forcefully killed
1175 - #159: Threading test regression in Actor refcounting
1176 - #170: simgrid::s4u::Comm::wait_any() returns too many comms
1177 - #185: simgrid::s4u::Engine::instance()->shutdown() segfaults
1178 - #186: Actor::killAll() segfaults if some process is blocked on wait()
1179 - #191: VM migration and pstate
1180 - #192: Updating the energy consumptions of all hosts crashes with VMs
1181 - #195: All actors have PID=0 in the logs
1182 - #204: Sometimes segfault with thread contexts and mmap privatization
1183 - #222: Actor::kill() doesn't really kill and segfaults
1184 - #225: Actor::kill() doesn't really kill when victims are doing a join()
1186 ----------------------------------------------------------------------------
1188 SimGrid (3.16) Released June 22. 2017.
1190 The Blooming Spring Release: developments are budding.
1193 - FreeBSD: Disable SMPI mmap privatization, switch automatically to dlopen.
1194 - Mac, BSD: dlopen+thread broken, switch automatically to raw contexts.
1195 - Java JAR file should be finally fully working on Mac OSX too.
1197 XML platforms: Switch to platform v4.1 format.
1198 * This is (mainly) a backward compatible change: v4 are valid v4.1 files
1199 - <zone> can be used as a synonym for the now deprecated <as>
1200 - <zoneRoute> can be used as a synonym for the now deprecated <asroute>
1201 - <bypassZoneRoute> can be used as a synonym for the now deprecated <bypassAsRoute>
1202 - <actor> can be used as a synonym for the now deprecated <process>
1203 - state_file and avail_file periodicity is now easier to express
1204 (check the documentation) the old behavior should still work.
1205 * Storage: not backward compatible, but it seems that nobody ever used it
1206 - Remove attribute 'content_type' of <storage_type>: was never used
1207 - Make attribute 'model' of <storage_type> optional: for future usage
1208 - Remove Bconnection model property: was never (in)validated. Replaced by
1209 the maximum of the read and write bandwidth as a resource constraint.
1212 - New and Backwards Compatibility break:
1213 SD_simulate_with_update (double how_long, xbt_dynar_t changed_tasks_dynar)
1214 When one wants to get the list of tasks whose states have changed during a
1215 simulation round, s/he has to allocate and free a dynar and use it as
1216 argument to this function. The former SD_simulate (double how_long)
1220 - Allow multicore VMs, with the correct sharing (unless you overcommit)
1221 BUG: vCPU overcommitting still leads to buggy sharing, though. WIP.
1224 - New function to update the consumption of all hosts at once.
1225 - Fix the model for multi-core hosts, linear in the amount of busy
1226 cores with an abnormality for pIdle (see paper).
1227 BUG: Still not satisfactory for ptask on mono-cores.
1230 - The netzone are now available from the MSG API.
1231 The old names still work, but are now deprecated.
1234 - New algorithm to privatize globals: dlopen, with dynamic loading tricks
1235 - New option: smpi/keep-temps to not cleanup temp files
1236 - New option: smpi/shared-malloc-blocksize . Relevant only when global shared
1237 mallocs mode is used, allows to change the size of the fake file used
1238 (default 1MB), to potentially limit the number of mappings for large runs.
1239 - Support for sparse privatized malloc with SMPI_PARTIAL_SHARED_MALLOC()
1240 - Fortran ifort and flang compilers support
1241 - New RMA calls supported (experimental):
1242 - MPI_Win_allocate, MPI_Win_create_dynamic, MPI_Win_attach
1243 - MPI_Win_detach, MPI_Win_set_info, MPI_Win_get_info
1244 - MPI_Win_lock_all, MPI_Win_unlock_all, MPI_Win_flush
1245 - MPI_Win_flush_local, MPI_Win_flush_all, MPI_Win_flush_local_all
1246 - MPI_Op_commutative, MPI_Fetch_and_Op, MPI_Compare_and_swap
1247 - MPI_Rput, MPI_Rget, MPI_Raccumulate, MPI_Rget_accumulate
1250 - New: this_actor::isMaestro() returns whether we are in kernel mode.
1251 - Behind the scene, ActivityImpl are now automatically refcounted.
1252 Removing this nasty bottleneck will greatly simplify our internals.
1255 - Replay: New function xbt_replay_action_get():
1256 Retrieve the function previously associated to an event type.
1257 - DROPPED FUNCTION: xbt_str_varsubst()
1258 - DROPPED MODULE: strbuff. We don't need it anymore.
1259 - DROPPED MODULE: matrix. We don't need it anymore.
1260 - DROPPED MODULE: lib. We don't need it anymore.
1262 -- Thu Jun 22 22:48:12 CEST 2017 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1264 SimGrid (3.15) Released March 22. 2017
1266 The Spring Release: continuous integration servers become green
1267 We fixed even the transient bugs on all target architectures:
1268 Linux (CentOS, Debian, Ubuntu, Fedora), Mac OSX (Mavericks, El Capitan)
1269 Windows, FreeBSD, NetBSD.
1271 - Rename NetCards to NetPoints.
1272 This was intended to help NS3 users, but that's not a netcard.
1273 That's a point in the routing algorithm, let's avoid wrong simplifications.
1276 - New: MSG_process_yield(). Stop and yield to other processes.
1277 - New: MSG_process_daemon(). Daemon processes are automatically killed
1278 when the last non-daemon process terminates
1279 - New: MSG_process_ref/unref(). Fiddle with the process refcounting.
1280 - Renamed MSG_energy_plugin_init() -> MSG_host_energy_plugin_init()
1281 to make room for the upcoming network energy plugin.
1282 - Drop MSG_host_get_current_power_peak: duplicates MSG_host_get_speed
1285 - Ensure that an actor can kill itself with Process::exit()
1286 - Kill the obscure NativeException. Nobody want to survive the issues
1287 it denotes, so use JniException that is a RuntimeException (not to
1288 be caught explicitly).
1289 - Partial bug fix in initialization. SimGrid flags on command line were
1290 consumed at C level but stayed in the original Java String[] args.
1291 This could mess users' args[i] if SG flags were not put at the end of
1293 The SimGrid flags are now removed from the Java arguments. However,
1294 the number of arguments REMAINS UNCHANGED. It is then UNSAFE to test
1295 if args.length is greater than the number of YOUR OWN ARGUMENTS.
1296 It might be if you have --log or --cfg flags in the command line.
1297 - Fix numerous memleaks all around the place. In particular, around VMs.
1301 - s4u::onPlatformCreated: right before the simulation starts
1302 - s4u::onSimulationEnd: right after the main simulation loop
1303 - s4u::onTimeAdvance: right after a clock change (time is discrete)
1304 - s4u::Host::onSpeedChange: when the pstate is changed, or when an
1305 event from the availability_file changes the avail speed.
1306 - Links are now usable from s4u
1307 - New: Engine::hostList() and Engine::hostCount(). Still clumsy.
1308 - New: Actor::suspend(), Actor::resume(), and Actor::migrate(new_host)
1309 - New examples: The conversion of MSG examples to S4U has begun
1310 - Actors: create, kill, migration, and suspend
1311 - Applications: master-worker and token-ring
1312 - Action replay: communications and storage
1313 - Drop Host::getPstateSpeedCurrent() which duplicates Host::speed()
1316 - Backwards Compatibility breaks
1317 - The SD_route_get_list and SD_route_get_size functions have been removed.
1318 They are replaced by the unique
1319 void sg_host_route(sg_host_t src, sg_host_t dst, xbt_dynar_t links)
1320 The route from src to dst is built in the links dynar whose size can
1321 be obtained with xbt_dynar_length.
1322 - The SD_route_bandwidth and SD_route_latency functions have been replaced by
1323 sg_host_route_bandwidth and sg_host_route_latency.
1324 Macros ensure the backwards compatibility, but you should fix your code
1327 - Major C++ rewrite ongoing (SMPI used to be C compiled in C++).
1328 This can break codes using SMPI internals (from private.h instead of the public smpi.h).
1329 - Bump our claim of support from MPI 1.1 to MPI 2.2.
1330 We don't support 100% of it, but it should be enough. Contact us if not.
1331 - MPI_Win_lock/unlock, MPI_Get_accumulate support added (as for all RMA, implementation is
1332 naive and probably inaccurate)
1333 - New algorithm for SMPI_SHARED_MALLOC: global, where all blocks are
1334 mapped onto a unique small file using some system magic.
1335 - Bugfix: smpirun was sometimes misusing hostfile when wrongly terminated
1336 - Fortran: cleanups, fixes, support of user-added operations
1337 - RMA: MPI_Accumulate are applied in correct order.
1338 - RMA: MPI_Win_{complete/post} shouldn't miss messages anymore.
1339 - Better support for MPI_IN_PLACE
1340 - Support for MPI_Win attrs and keyvals.
1341 - Support MPI_Comm_group_create, MPI_Type_size_x
1342 - MPI ops should be properly applied to all allowed types
1343 - Replace implementation of MPI_Bcast "scatter followed by rdb allgather"
1344 algorithm by a non failing one from mpich.
1347 - Kill the fifo data container: we don't use it anymore.
1350 - A <cluster> can now be created with different speed values to represent pstates.
1351 see examples/platforms/energy_cluster.xml for an example.
1353 SimGrid (3.14.159) Released December 28. 2016
1355 The previous release was only a crude approximation of a Pi release;
1356 this one should be a bit better.
1358 - Revert a last minute change that broke on Mac OSX.
1359 - Fix the changelog and NEWS files.
1360 - Improve the documentation, in particular of the routing module.
1361 - Integrate some patches flying around in Debian.
1363 SimGrid (3.14) Released December 24. 2016
1366 * The whole documentation was reworked and reorganized. There is
1367 still much room for improvement here, but we're on it.
1370 * We now need python3 for our testing infrastructure.
1371 * Model checking needs libevent
1374 * Now works on FreeBSD
1377 * Privatization now works on FreeBSD
1379 * Privatization is now activated by default in smpirun
1380 You can turn it off with -no-privatize if something goes wrong.
1382 * Call-location tracing for SMPI.
1383 You can add the exact location (filename / linenumber) of an MPI call to
1384 your trace files and slow down or speed up the simulation between two
1385 consecutive calls by using an adjustment file (see the documentation).
1387 * Fixed computation of timings for MPI_Send, MPI_Recv & possibly also others
1388 We've found a bug that prevented SMPI to account for MPI_Send, MPI_Recv
1389 and others (in some cases) in a correct way. That is, the smpi/os, smpi/or
1390 values were ignored in some cases. The timings of these functions can now
1391 be significantly different.
1393 * smpi/cpu-threshold:-1 should become smpi/simulate-computation:no
1394 smpi/running-power is renamed to smpi/host-speed
1396 * smpi/grow-injected-times option to enable or disable multiplication of the
1397 timings injected in MPI_Iprobe, or MPI_Test. Enabled by default, which can
1398 make simulation less precise (but also much faster).
1400 * smpirun script should be (much) faster for large deployments.
1402 * SMPI tracing: fixed issue with poor matching of send/receives.
1404 * Replay: Fix broken waitall
1406 New functions and features
1407 * MSG_parallel_task_execute_with_timeout, to timeout computations.
1409 Dropped / renamed functions and features
1410 * msg_mailbox_t and associated functions. Use s4u::Mailbox instead.
1411 - MSG_mailbox_is_empty() -> Mailbox::empty()
1412 - MSG_mailbox_front() -> Mailbox::front()
1413 - MSG_mailbox_get_by_alias() -> simgrid::s4u::Mailbox::byName(name)
1414 - MSG_mailbox_get_task_ext() -> MSG_task_receive_ext()
1415 - MSG_mailbox_get_task_ext_bounded -> MSG_task_receive_ext_bounded
1416 - MSG_host_(get/set)_params -> MSG_vm_(get/set)_params
1417 * Don't pass the free_f parameter to property related functions:
1418 - MSG_host_set_property_value()
1419 - MSG_as_router_set_property_value()
1420 - MSG_storage_set_property_value()
1421 * VM properties. Since msg_vm_t are msg_host_t, just use
1422 MSG_host_get_property_value() and friends
1423 * VM I/O related things:
1424 - Ignored parameter of vm_create: core_nb, disk_path and disk_size.
1425 - Unimplemented save/restore methods
1426 * MSG_as_router_get_property_value() was redundant with
1427 MSG_environment_as_get_property_value().
1428 - Removed MSG_as_router_*propert*() functions
1429 - Added MSG_environment_as_set_property_value() for consistency
1430 * xbt heterogeneous dictionaries (created with xbt_dict_new()).
1431 Well, they are still there for now, but deprecated with a warning.
1432 Please switch to xbt_dict_new_homogeneous() before this is removed
1434 * Task affinity. Its intended behavior (that was very badly tested
1435 and probably not really working) was deceiving what most users
1436 would have hoped here.
1437 * xbt_os_sem_get_value: unused internally, deprecated on OS X El Capitan
1438 * Option network/coordinates is now useless and should be dropped.
1441 * Added option storage/max_file_descriptors to allow more than 1024 files opened
1444 * Added option maxmin/concurrency_limit to allow more than 100 processes per host
1445 * Added Dragonfly topology support
1448 * Add Exa- and Peta- units such as EiB, EB, Eib, Eb for size, and
1449 EiBps, EBps, Eibps, Ebps for bandwidth.
1450 They may become useful to some lucky ones.
1453 * New functions: msg.Comm.waitAll() and msg.Comm.waitAny()
1454 * ex/app_tokenring: new example, very similar to the MSG Token Ring
1455 * ex/async_waitAll: new example, on asynchronous communications
1458 * Memory usage should be decreased for simulations with a large number
1459 of processes. This also helps for SMPI.
1461 SimGrid (3.13) stable; urgency=low
1463 The Half Release, a.k.a. the Zealous Easter Trim.
1465 - We removed half of the lines, that were mostly experimental cruft.
1466 v3.12 lasted 286000 lines of code, v3.13 is only 142000 lines
1467 (not counting blanks and comments -- according to openhub.net)
1468 - The internals are now compiled in C++ (and will soon be clean C++)
1469 - We removed 75 klines of XML, 12 klines of Java, 5 klines of cmake,
1470 59 klines of C, etc. We added only 29 klines of C++ in replacement.
1472 * Backwards Compatibility breaks
1473 - Removed Lua simulation bindings (switch to C or Java for that).
1474 Lua can still be used to describe platforms
1475 - Removed Java kernel plug-ins.
1476 Will be reintroduced after the ongoing major internals reorg.
1478 - the following functions were removed.
1479 They were too specific and should be reimplemented in a generic
1480 way, with filter function.
1481 - MSG_task_listen_from_host
1482 - MSG_mailbox_get_count_host_waiting_tasks
1483 - MSG_mailbox_put_with_timeout was removed.
1484 Please use MSG_task_send_with_timeout instead.
1486 - the SD_application_reinit function was removed. It has been a noop for a while.
1487 - The ACCESS_MODE of SD_workstation has been removed. This feature was not really usable and should soon be
1488 replaced by a more flexible mechanism.
1489 - The following functions thus do not exist anymore
1490 - SD_workstation_get_access_mode
1491 - SD_workstation_set_access_mode
1492 - SD_workstation_get_current_task
1493 - Basic estimation functions have been removed but can easily be replaced
1494 - SD_route_get_communication_time => SG_route_get_latency() + amount / SD_route_get_bandwidth()
1495 - SD_workstation_get_computation_time => amount / sg_host_speed()
1497 - VM.setBound(int load) is now VM.setBound(double bound) to meet the MSG semantics.
1498 Use VM.getSpeed()*load/100 for the legacy behavior.
1500 - option enable_tracing was removed. It was not doing anything for a while.
1501 - In the ModelChecker:
1502 - the model-checker now ptraces the model-checked process which means
1503 you cannot use a debugger on the latter anymore (we might make this
1504 optional in the feature);
1505 - removed soft-dirty page tracking;
1506 - remove model-checked side snapshot management,
1507 MC_snapshot() and MC_compare_snapshot();
1508 - keep the MC_cut() function as a stub (it was not really working
1509 in the previous release).
1512 * All options are consistently in kebab-case. Old names are kept as alias.
1515 * Switch to platform v4 format.
1516 - Rename from 'power' to 'speed' the attributes describing the amount of
1517 flops that a <host>, <peer>, <cluster> or <cabinet> can deliver per second.
1518 - In <trace_connect>, attribute kind="POWER" is now kind="SPEED".
1519 - In <host> and <link>, attributes availability and state are gone.
1520 It was redundant with state and availability traces, and with peak values.
1521 - In <cluster>, attributes availability_file and state_file are gone.
1522 It was too complex and unused.
1523 - Kill <gpu>. Was not doing anything.
1524 - The DOCTYPE points to the right URL:
1525 http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd
1526 (the file at this address now documents the changelog since its v1)
1527 - A warning is emitted for unit-less values (they are still accepted).
1528 - speed. Default: 'f' or 'flops'. Also defined:
1529 'Yf', 'Zf', 'Ef', 'Pf', 'Tf', 'Gf', 'Mf', 'kf'
1530 'yottaflops', 'zettaflops', 'exaflops', 'petaflops', 'teraflops', 'gigaflops', 'megaflops', 'kiloflops'
1531 - bandwidth. Default: 'Bps' bytes per second (or 'bps' for bits but 1 Bps = 8 bps)
1532 Also defined in bytes: 'TiBps', 'GiBps', 'MiBps', 'KiBps', 'TBps', 'GBps', 'MBps', 'kBps', 'Bps'
1533 And the same in bits: 'Tibps', 'Gibps', 'Mibps', 'Kibps', 'Tbps', 'Gbps', 'Mbps', 'kbps', 'bps'
1534 - latency. Default: 's' second. Also defined:
1535 'w' week, 'd' day, 'h' hour, 'm' minute, 'ms' millisecond, 'us' microsecond, 'ns' nanosecond, 'ps' picosecond
1537 * bin/simgrid_update_xml can upgrade your files automatically (won't convert unit-less values)
1538 tools/sg_xml_unit_converter.py may help (but it's just a warning and will probably ever be).
1541 * s4u::Host is now the preferred public interface to the Host features.
1542 sg_host_* functions are C bindings to the exact same behavior
1543 MSG_host_* and SD_workstation_* are #define to the sg_host_* ones
1546 * The examples were completely reorganized (in C and Java), for your browsing pleasure.
1547 * Kill all deprecated functions (the ones you had when declaring MSG_DEPRECATED).
1548 They were deprecated since a few years, and probably did not even compile anymore.
1551 * The API has been profoundly modified to directly use the core objects instead of redefining its own.
1552 SD_Workstation_t and SD_link_t are now sg_host_t and sg_link_t respectively.
1553 Some functions have also been renamed for consistency. Backward compatibility is maintained, but users are
1554 encouraged to update their codes. A list of the modified functions can be found at the end of
1555 include/simgrid/simdag.h
1558 * simgrid::simix::kernelImmediate() is the closure callback. It ensures that
1559 the lambda or closure passed as a parameter will run in kernel mode.
1560 All the callback functions should be rewritten to that interface at some point.
1563 * Reorganizing and cleaning the internals all around the place.
1566 * Remove old default barrier/bcast buggy algorithms (see #18407)
1567 * Various bug fixes to handle more codes
1568 * Remove the need for the --foreground option of smpirun (it is still
1569 accepted for backward compatibility).
1572 * Kill the setset data container: MC don't use it anymore.
1573 * Kill the queue data container: it made more sense with GRAS.
1574 * Kill the xbt_peer_t data type: it's useless without GRAS.
1575 * Kill rm_cb feature of config sets: it was never useful.
1576 * Kill graphxml parsing feature. It was not used.
1577 * Kill the deprecated code protected by XBT_USE_DEPRECATED
1579 - xbt_dynar_sort_strings(), when the content is char*
1580 - xbt_str_parse_int / xbt_str_parse_double, wrapping strtol/strtod
1581 They throw exceptions on invalid input;
1582 * C++ support for declaring CLI flags (simgrid::config::Flag);
1583 * class for abstracting different signal backends (simgrid::xbt::signal).
1584 with no external dependencies (we need very simple signals).
1587 * refactoring and cleanup of the code;
1588 * ongoing process to cleanly separate the model-checking algorithms
1589 from the code model-checking support.
1591 -- Wed Apr 27 21:00:53 CEST 2016 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1593 SimGrid (3.12) stable; urgency=low
1595 The Facelift Release.
1598 * Require g++ v4.7 at least to not speak prehistorical C++.
1599 * Require Boost 1.48 (for signal2 component).
1600 * Java must be version 7 at least when activated.
1601 * Builds on Windows again (including Java bindings).
1602 * Tracing is now always enabled (no way to turn it out)
1603 * Remove GTNetS. It was not working anyway.
1604 * Various cleanups in the cmake scripts.
1605 * Move headers around to sort them out on installed systems:
1606 - instr/instr.h -> simgrid/instr.h
1607 - instr/jedule/* -> simgrid/jedule
1608 - simdag/datatypes.h was removed
1609 - simdag/simdag.h -> simgrid/simdag.h
1610 - msg/datatypes.h was removed
1611 - msg/msg.h -> simgrid/msg.h
1614 * Interface improvement:
1615 - Rename MSG_host_is_avail(h) to MSG_host_is_on(h)
1616 - Sanitize the interface in MSG_task_ module:
1617 - Merge two functions that were close enough but misleading:
1618 set_compute_duration(t) -> set_flops_amount(t)
1619 get_remaining_computation(t) -> get_flops_amount(t)
1620 - set_data_size(t) -> set_bytes_amount(t)
1621 get_data_size(t) -> get_bytes_amount(t)
1622 - Massive cleanups in the functions related to the energy
1623 - MSG_host_get_pstate_number() -> MSG_host_get_nb_pstates()
1624 - New: MSG_host_get_pstate()
1626 - msg/energy/onoff: switching hosts on and off
1628 * Interface improvement:
1629 - Rename Host.isAvail() to Host.isOn()
1630 - Rename Process.currentProcess() to Process.getCurrentProcess()
1631 - Rename Task.setDataSize() to Task.setBytesAmount()
1632 - Merge Task.getRemainingDuration() and Task.getComputeDuration() into Task.getFlopsAmount()
1634 - #18874: Actually allows the GC to reclaim tasks
1638 - SIMIX_process_throw: raises an exception in a remote process
1639 * Refactoring: Separate sub-modules
1640 - libsmx: the public interface, as libc in a real system
1641 - popping: the strange dance that converts a user request into a kernel handling
1642 - smx_context_*: the virtualization mechanisms that embed the user code
1643 - smx_*: the handling of each simcalls
1644 * Interface cleanup:
1645 - simcall_host_set_power_peak_at -> simcall_host_set_pstate
1646 * Rename smx_action_t into smx_synchro_t, making explicit that these
1647 things are used to synchronize processes with their environment.
1648 For example, a communication is a sort of synchronization involving
1649 the communicating processes (that may block until the exchange) and
1650 the platform. The same can be said from computations, etc.
1652 - #18888: segfault when a process ends before its kill_time
1656 - 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.
1657 - MPI_Keyval*, MPI_Attr* functions, as well as MPI_Comm_attr*, MPI_Type_attr* variants (C only, no Fortran support yet)
1658 - MPI_Type_set_name, MPI_Type_get_name
1659 - MPI_*_c2f and MPI_*_f2c functions
1660 - MPI_Info_* functions (beware, get_nthkey may not follow the insertion order)
1661 - MPI_Pack, MPI_Unpack and MPI_Pack_size functions
1662 - Activate a lot of new tests from the mpich 3 testsuite
1664 - Constant times can be injected inside MPI_Wtime and MPI_Test through options smpi/wtime and smpi/test
1665 - InfiniBand network model added: Based on the works of Jerome Vienne
1666 http://mescal.imag.fr/membres/jean-marc.vincent/index.html/PhD/Vienne.pdf
1667 - When smpi/display_timing is set, also display global simulation time and application times
1668 - Have smpirun, smpicc and friends display the simgrid git hash version on --git-version
1669 * Collective communications
1670 - 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
1671 - 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/).
1672 - Support for Rabenseifner Reduce/Allreduce algorithms (https://fs.hlrs.de/projects/par/mpi//myreduce.html)
1674 - Replay now uses algorithms from wanted collective selector
1675 - Replay can be used with SMP-aware algorithms
1676 - Memory occupation of replay should now be contained (temporary buffers allocated in collective algorithms should be shared between processes)
1677 - 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.
1679 - [#17799]: have mpi_group_range_incl and mpi_group_range_excl better test some corner cases
1680 - Correctly use loopback on fat-tree clusters
1681 - Asynchronous small messages shouldn't trigger deadlocks anymore
1682 * Energy/DVFS cleanup and improvement
1683 - smpi_set_host_power_peak_at() -> smpi_set_host_pstate()
1684 - new: smpi_get_host_pstate()
1687 - "Full" network optimization flag was broken since Surf++
1688 - Better handling of precision flags in maxmin
1689 - Fix bug causing sometimes "Impossible" errors
1690 - Properly pass cluster properties to included hosts
1691 * Improvement of the Energy plugin.
1692 - Always update the consumption before returning that value
1693 - New property: watt_off to denote the dissipation when the host is off
1694 - New functions getWattMinAt and getWattMaxAt to retrieve the
1695 dissipation of pstates that we are not currently at.
1696 * Java: class NetworkLink renamed to Link
1697 * New function: simcall_process_get_kill_time()
1698 * Massive rename s/workstation/host/
1699 - That's intrusive, but that's good for the project consistency. Sorry.
1700 - Change config option "workstation/model" into "host/model"
1703 - Add a xbt_heap_update function, to avoid costly xbt_heap_remove+xbt_heap_insert use
1704 - Add a xbt wrapper for simcall_mutex_trylock (asked in [#17878])
1705 - Add two new log appenders: rollfile and splitfile. Patch by Fabien Chaix.
1706 - xbt_dirname and xbt_basename for non-POSIX systems
1708 * The model checker now runs as a separate process.
1709 * The model checker runs must now be launched with the new simgrid-mc program.
1710 * Record/Replay: the MC can display a textual representation of a path in the
1711 execution graph. It can then be replayed outside of the model checker.
1713 -- Mon Oct 12 06:02:41 CEST 2015 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1715 SimGrid (3.11) stable; urgency=low
1720 * Normalizing pointers addresses tool for better diff between logs
1723 * Add cloud examples using new VMs
1724 - examples/msg/cloud/two_tasks_vm.tesh
1725 - examples/msg/cloud/simple_vm.tesh
1726 - examples/java/cloud/cloud.tesh
1727 - examples/java/cloud/migration/migration.tesh
1728 * Add java surf examples:
1729 - examples/java/surfPlugin/surf_plugin.tesh
1730 - examples/java/reservationSurfPlugin/reservation_surf_plugin.tes
1731 - examples/java/surfCpuModel/surf_cpu_model.tesh
1732 * Add SMPI+MSG example:
1733 - examples/smpi/smpi_msg_masterslave/
1738 - msg task destroy cancel test
1739 - msg_host on/off test
1740 * Move all tests in testsuite to teshsuite (adding tesh files)
1741 * Restructure teshsuites
1742 - one folder for each kind of test
1743 * Restructure AddTests.cmake
1745 - structure the order of tests (with sections)
1748 * Add virtual machine
1749 - creation of a VM on a PM
1750 - migration of a VM from a PM to another PM
1752 - MSG_process_join(msg_process_t process, double timeout)
1753 - msg_bar_t MSG_barrier_init(unsigned int count)
1754 - int MSG_barrier_wait(msg_bar_t barrier)
1755 - void MSG_barrier_destroy(msg_bar_t barrier)
1756 - msg_as_t MSG_environment_as_get_by_name(const char * name)
1757 * New option "msg/debug_multiple_use" to help debugging when a task is used
1760 - Improvements and finalization of MSG_storage, MSG_file APIs and their
1762 - Increase code coverage in test suites
1766 * Protect context stacks against stack overflow. The number of protected memory
1767 pages allocated on the top of each stack (1 by default) can be configured
1768 with the new command line option --cfg=contexts/guard_size:<value>.
1769 * Simcalls are now generated by a python script that
1770 - generates files included by SimGrid
1771 - checks that all the functions exist, and proposes prototypes
1773 - remove sem_destroy, file_set_data, comm_destroy, vm_set_state,
1774 host_set_data, host_get_data
1776 - simcall_process_join(smx_process_t process, double timeout)
1777 * Fix bug where sleeping processing could not be suspended.
1780 * Translate surf models from C to C++
1781 - Generic classes for all models: Model, Resource, Action
1782 - A generic interface for each kind of model (CPU, Network, Storage
1783 Workstation, WorkstationVM)
1785 * Translate surf routings from C to C++
1786 * Add callbacks using sigc++ or boost::signals2
1787 - Add callback functions for resource creation/destruction
1788 - Add callback functions for action state change
1789 - Handle Energy as a plugin
1790 * Replace swag by boost::intrusive
1791 * Add new routing models for clusters. For documentation, see
1792 http://simgrid.gforge.inria.fr/simgrid/latest/doc/platform.html#pf_cluster
1793 - tori, with topology="TORUS" and topo_parameters="ndim1,ndim2,...,ndimn"
1794 parameters for cluster tag
1795 - Fat trees, with topology="FAT_TREE" and
1796 topo_parameters="h;m1,...,mh;w1,...,wh;p1,...,ph" parameters for cluster tag
1797 - see examples/platforms/torus_cluster.xml and
1798 examples/platforms/fat_tree_cluster.xml
1799 * More documentation
1802 * Hostfiles support host:nb_processes construct to deploy several processes on
1804 * Collective communication algorithms should not crash if used with
1805 improper number of nodes and report the error.
1806 * SMPI now partially supports MPI_Topologies: MPI_Cart_create, MPI_Cart_shift,
1807 MPI_Cart_rank, MPI_Cart_get, MPI_Cart_coords, MPI_Cartdim_get,
1808 MPI_Dims_create, MPI_Cart_sub are supported.
1809 * New interface to use SMPI programmatically (still depends on MSG for
1810 some parts, see examples/smpi/smpi_msg_masterslave):
1811 - SMPI_app_instance_register(const char *name, xbt_main_func_t code,
1815 * Global variables privatization in MPI executables is now performed at runtime
1816 with the option smpi/privatize_global_variables (default:no).
1817 Limitations: Linux/BSD only, with mmap enabled. Global variables inside
1818 dynamic libraries loaded by the application are not privatized (static
1819 linking with these libraries is advised in this case)
1822 * Options defined in XML work correctly now.
1825 * New cmake option, enable_lib_in_jar, to control whether native libraries are
1826 copied into simgrid.jar or not (ON by default). Use this option if you want
1827 to reduce the size of the installed simgrid.jar, *and* the native libraries
1828 are kept installed elsewhere.
1829 * Surf binding with SWIG (code generated in maintainer mode only):
1830 - plugin to handle callbacks
1831 - CPU model only for the moment
1834 * Supernovae build mode is definitively removed. It was used to improve
1835 inlining and inter-module optimizations. It is nowadays superseded by
1836 link-time optimizations commonly available in compilers.
1837 * Update ns-3 find lib. Bindings for ns-3 should work again now.
1838 * Add boost dependency for surf++
1839 * Add new macro for tests
1840 - ADD_TESH(name <tesh_args>)
1841 - ADD_TESH_FACTORIES(name "thread;ucontext;raw" <tesh_args>)
1845 - xbt_bar_t XBT_barrier_init(unsigned int count)
1846 - int XBT_barrier_wait(xbt_bar_t barrier)
1847 - void XBT_barrier_destroy(xbt_bar_t barrier)
1848 * Make the xbt_os_time module public
1850 -- Sat May 31 22:39:38 CEST 2014 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1852 SimGrid (3.10) stable; urgency=low
1854 The Clean Diaper Release, a.k.a. SimGrid is leak-free.
1857 * Reintegrate Java to the main archive as desynchronizing these
1858 package is not acceptable anymore (Java is now considered stable)
1859 * Add explicit synchronization facilities through semaphores
1860 * Bug fix: Task.setDataSize() only changed the C world, not the value
1861 cached in the Java world
1864 * Dramatically change the way files are handled. API and internals changed, but
1865 this part of MSG was not considered as production grade either.
1866 * Add explicit synchronization facilities through semaphores
1867 * Add a new function MSG_host_get_process_list()
1868 * Preliminary DVFS support (see examples/msg/energy/ for details)
1871 * SMPI is now included directly in the libsimgrid as the windows
1872 linker doesn't force us on splitting it anymore.
1873 * Improvements of the SMPI replay tool:
1874 - Most of the collective communications are now rooted in the same process as
1875 in the original application.
1876 - Traces now rely on the same MPI data type as the application (MPI_BYTE was
1877 used until now). Multiple data types can now be used in a trace.
1878 - The replay tool now supports traces produce either by TAU or a modified
1880 - Bug Fix: the compute part of the reduce action is now taken into account.
1881 - Gatherv collective is now supported
1882 - SimGrid (SMPI for now) can generate replay traces as well. Option -trace-ti
1883 of smpirun outputs time independent traces for the current run. One file
1884 is created per process. If too many processes are simulated, this behavior
1885 can be changed to one file for all processes by using the
1886 tracing/smpi/format/ti_one_file flag
1887 * smpirun generates the host file if needed (with given host count and platform)
1888 * Integration of more than 100 STAR-MPI, MPICH, OpenMPI collective algorithms
1889 - allows to select one in particular with --cfg=smpi/coll_name:algorithm
1890 - allows to use the decision logic of OpenMPI(1.7) or MPICH(3.0.4) by setting
1891 --cfg=smpi/coll_selector:(mpich/ompi)
1892 * Support for new functions: MPI_Issend, MPI_Ssend, Commutative operations in
1894 * Add a --cfg:tracing/smpi/internals option, to trace internal communications
1895 happening inside a collective SMPI call.
1896 * Fix the behavior of complex data types handling.
1897 * Make MPI_Wtime another synchronization point to take computations into
1899 * Replace MPICH-1 test suite by the one from MPICH 3.0.4. Can be built using
1900 enable_smpi_MPICH3_testsuite flag in cmake. Run with ctest.
1901 * Add all missing Fortran bindings, SMPI should work with Fortran 90
1902 (no privatization of global variables yet)
1903 * Preliminary DVFS support (see examples/smpi/energy/ for details)
1906 * Verification of liveness properties is now available for SMPI applications
1907 (in addition to MSG applications)
1908 * Bugged examples using SMPI in examples/smpi/mc/
1909 * Add --cfg=model-check/visited option. Allows the verification of infinite
1910 programs. Detection of loops in the execution thanks to the system state
1911 comparison and reduction of the state space to explore. Can be combined with
1912 DPOR for safety properties.
1915 * Allow to change SimGrid configuration (see --help) within the code
1916 thanks to SD_config() as it can be done in MSG.
1917 * Add a new function SD_task_set_amount() upon user request.
1920 * Handle units for values (10ms, 10kiloflops, 10Bps, 1GB, ...)
1921 * Remove rule based routing (no more PCRE dependency)
1922 * Add a limiter_link option to cluster tag, to specify a maximum reachable
1923 bandwidth in fullduplex mode when it is less than twice the nominal bandwidth.
1924 * Add a loopback_bw and loopback_lat options to cluster tag.
1925 * Fix the peer tag that could not be mixed with other AS within a Vivaldi
1926 routing. Now peers are encapsulated in an AS and have their own private
1927 router but this is transparent.
1930 * Our own implementation of getline is renamed xbt_getline, and gets
1931 used even if the OS provide a getline(). This should reduce the
1932 configuration complexity by using the same code on all platforms.
1933 * New type: xbt_cfg_elm_boolean.
1934 * Allow to use yes/no for boolean configuration options in the command line.
1935 * Allow to disable SimGrid cleanups at exit from command line option.
1936 There are situations where one may want a simulation to end with an exit.
1937 Unfortunately, calling exit may cause SimGrid to segfault, which is quite
1938 annoying when scripting around the simulator. Adding a
1939 --cfg=clean_atexit:no allows to circumvent this issue.
1942 * Lots of memory leaks were corrected in this release.
1943 There is no known memory leaks anymore, in all of our 600+ tests.
1944 * New command line option --version, to get SimGrid version information.
1945 Packagers may want to add extra words to SIMGRID_VERSION_EXTRA defined in
1947 * Supernovae builds are deprecated, and expected to be removed in the next
1950 -- Sun Nov 17 00:26:44 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1952 SimGrid (3.9) stable; urgency=low
1954 The Grasgory release: GRAS is really dead now.
1956 * Complete overhaul of the internal host structures scheme.
1959 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
1960 was considered as experimental and badly maintained since then.
1961 * Keeping it was thus a trap to our potential users, that could take
1962 it instead of MSG or SMPI by mistake despite is pity state.
1963 * GRAS seems to have very few users (if any), and no one volunteered
1964 to maintain it further. It also induces a lot of XBT code (for
1965 portability sake), that must be maintained too.
1966 * For all these reasons, we killed GRAS. If someone wants to revive it
1967 in the future, don't cry, our git history still remembers of GRAS.
1970 * Major overhaul. Merge our documentation again as time proved that
1971 splitting it was really not helping our users.
1972 * Further improve the developer documentation to help newcomers
1973 hacking on SimGrid itself. The user documentation (and in
1974 particular, the beginner documentation) is still in a sorry state.
1977 * Now works on Windows too!
1978 * Much more extensive test suite, from MPICH
1981 * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
1982 (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
1983 dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
1984 * Bug fix: let task be scheduled when the last dependency to be solved is
1985 a control dependency.
1986 * Remove SD_load_environment_script function.
1987 Use the C sg_platf function if you want to declare a platform
1991 * New function: MSG_process_get_number()
1992 * Old function documented: MSG_config()
1993 * Remove MSG_load_platform_script function
1994 Use the C sg_platf function if you want to declare a platform
1998 * Change the default value of the TCP_gamma constant (maximal size of TCP
1999 congestion window) to a more realistic 4MiB value. If you notice changes in
2000 your simulation results, you can fall back to the previous 20k tiny window
2001 by adding --cfg=network/TCP_gamma:20000 on command line.
2002 * (Hopefully) fix a bug wrt periodic availability and state traces
2003 * Bug fix: use default values at start when first event in availability/state
2004 trace is not at time 0.
2007 * remove the "new_" part of function name sg_platf_new_trace_connect
2008 (resulting in sg_platf_trace_connect), since it does not create
2012 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
2013 use case where it's really mandatory, and maintaining it was a pain in
2015 * New: xbt_fifo_search(), search an item with a user-provided
2016 comparison function instead of dumb pointer comparison.
2019 * Fix the lua deployment:
2020 Use `simgrid.init_application()` before deployment instead of
2021 `simgrid.msg_register_application()` after.
2024 * Transfer the tracing files into the corresponding modules.
2026 -- Tue Feb 5 11:31:43 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2028 SimGrid (3.8.1) stable; urgency=low
2030 The "we are told that some people want to also *install* the simgrid
2033 * Add missing file "tesh.1" to the archive.
2035 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2037 SimGrid (3.8) stable; urgency=low
2039 The Psssshiiiit release: SimGrid jumps into the Cloud.
2042 * Add an experimental interface to manipulate VMs. They are mainly
2043 process groups with very few intrinsic semantic, but they should
2044 allow you to build the semantic you want easily.
2045 * New function: MSG_host_set_property_value()
2046 * New function: MSG_process_on_exit(). To clean memory in all cases.
2047 * Bug fixes that made the host (and link) failures unusable.
2048 * Add a way to auto-restart process when the host in which they are
2049 executing comes back (ON_FAILURE="RESTART" on deployment file,
2050 MSG_process_auto_restart_set).
2051 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
2052 please stop using the old ones, they are DEPRECATED.
2054 * Deprecate functions MSG_global_init() / MSG_global_init_args()
2055 Please use MSG_init() instead. (reducing the amount of entry
2056 points in the library helps us).
2057 * Make it impossible to link against the wrong version of the lib
2058 * Deprecate MSG_clean(). No need to call it anymore.
2059 * Function MSG_get_host_number() is not deprecated anymore.
2062 * Split the doc into a user guide and a reference guide.
2063 * Start a developper guide to help people hacking on SimGrid.
2066 * Enable tracing by default. This modules rocks you should use it.
2067 * Remove option custom_flags. Now use environment variables CFLAGS
2069 * Use default cmake things to detect lua instead of home grown ones.
2070 * New option "enable_mallocators" to disable mallocators, for debugging
2071 purpose ("on" by default).
2074 * Bug fixes around the resource failures: don't let the processes
2075 survive the host they are running onto.
2076 * Add an interface to auto-restart processes when the host in which they are
2077 executing comes back.
2078 * Ensures that SIMIX_clean is called automatically. It's not part of
2079 the public interface anymore (bindings should be updated).
2082 * Bug fix for when SD_Simulate is called with a positive value: be careful
2083 when comparing doubles. Sometimes they are different for non significant
2085 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
2086 parallel task whose initial work is distributed among host according
2087 to the Amdahl's law. Such tasks are created with a parameter alpha
2088 that corresponds to the non-parallelizable part of the computation.
2089 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
2090 between two sets of workstations assuming a 1D block distribution (each
2091 workstation owns a similar share of data) on both sides.
2093 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
2094 Data redistribution will be automatically scheduled once parent and child
2095 are both scheduled. The filling of computation_amount and
2096 communication_amount structures is now done seamlessly thanks to the chosen
2098 * New function SD_workstation_dump to display various information
2099 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
2100 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
2101 bandwidth on the route onto which the task is scheduled and the amount of
2103 To divide the nominal bandwidth by 2, the rate then has to be:
2104 rate = bandwidth/(2*amount)
2105 * Compute tasks that have failed can now be rescheduled and executed again
2106 (from their beginning)
2107 * Increasing source code coverage (src/simdag is now covered at 95.8%
2111 * Re-implement time-independent trace replay using SMPI (at the
2112 smpi_smp_* level) instead of MSG. This should replace
2113 examples/msg/actions/actions.c
2114 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
2115 hindexed and structs)
2116 * Implement the exchange of non-contiguous data.
2117 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
2118 * Correct behavior of smpi/sender_gap and set its default value to 0
2119 * Add option to asynchronously send small messages to allow better
2120 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
2121 specifies the size in bytes under which messages will be asynchronously sent.
2122 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
2123 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
2126 * New C interface to define a platform: XML is now optional.
2127 For more info, please check include/simgrid/platf.h.
2128 * New interface to define random platforms from the C:
2129 For more info, please check include/simgrid/platf_generator.h and
2130 examples/msg/masterslave/masterslave_platfgen.c
2131 * Export a sg_cmdline dynar containing all the arguments we got from
2135 * Two new tracing options for adding comments to trace file so you
2136 can track your experiments (see --help-tracing for details).
2137 * New option to generate an impoverished trace file (--cfg=tracing/basic:1)
2138 * Adding the SimGrid version that generated the trace file as a comment.
2139 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
2140 * Fix to avoid key clashes on Paje links
2141 * Other minor fixes related to the Paje specification
2144 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
2145 and renamed to xbt_str_hash() and xbt_str_hash_ext().
2146 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
2147 * Greatly improve the robustness of mmalloc to user errors (such as
2148 using an area after freeing it, or freeing it twice)
2150 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2152 SimGrid-java (3.8.1) stable; urgency=low
2154 * New module: org.simgrid.trace.Trace (SimGrid trace bindings)
2155 Warning: all methods are visible, but only some of them are
2156 implemented so far. Check the source (src/jtrace.c)
2157 for further information.
2158 * New module: org.simgrid.msg.File (SimGrid File management functions)
2159 * New Module: org.simgrid.msg.VM (SimGrid interface to mimick IAAS clouds)
2160 * Change the meaning of Process.restart: now restart the process from
2161 the beginning, like MSG_process_restart in C.
2162 * Add Process.setAutoRestart: handling of process restart when failed
2164 * Add Process.getProperty, Host.getProperty, Host.getProperty: allows
2165 you to retrieve the properties of the processes/hosts
2166 * Deprecate Msg.clean(): you can just forget about it now.
2167 * New function Process.getCount(), that only works when compiling
2168 with the not yet released version 3.9 of the C library.
2170 * New context factory based on Coroutines. It mandates a modified JVM
2171 but then, the simulations run about five times faster, and there is
2172 no limit to the amount of processes (beside of the available memory).
2174 -- 2012-12-04 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2176 SimGrid (3.7.1) stable; urgency=low
2179 * Restore the prototype of MSG_process_create_with_environment() to
2180 the pre-3.7 situation by removing the kill_time argument.
2181 * Add a MSG_process_set_kill_time() function instead.
2184 * Fix weird behaviors when dealing with parallel tasks.
2187 * Simgrid is now built as a dll.
2188 * Simgrid-java now works on Windows.
2189 * Simgrid-Java is now included into Windows package.
2192 * First pre-build package for MacOSX.
2195 * Fix compilation when using MSG_USE_DEPRECATED.
2196 * Fix some compilation issues on Macs and Windows.
2197 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
2198 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
2200 We discovered that the Lua console is broken, but we are missing the
2201 manpower to fix it right now. The problem existed in 3.7 too, so we
2202 are not blocking the release for that. Sorry if you depended on this
2203 feature, any help would be really welcome.
2205 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2208 SimGrid-java (3.7.1) stable; urgency=low
2210 The "Java aint got to be bloated and slow" release
2213 * Various internal cleanups and performance improvement
2214 Simulations are expected to run up to twice faster or so
2215 * Make Process.kill(process) an instance method, not a static one
2216 * User processes are not java.lang.Thread subclasses.
2217 This breaks the compatibility (sorry), but previous API was
2218 brain-dead, making it impossible to have non-trivial
2219 initializations in the process constructor.
2220 * Require a full constructor per Process sub-class.
2221 Kinda breaks the compatibility (sorry), but this allows a much more
2222 efficient way to launch the processes at simulation startup.
2223 * Do not embeed our version of semaphores, java 1.5 can be considered
2224 as sufficiently prevalent for us to not dupplicate its features.
2228 * Add examples for almost every part of the API
2229 We spotted and fixed a lot of bugs in the process
2231 * New module: asynchronous communication API
2232 * New function: Process.sleep()
2233 It takes milliseconds as argument, just as java.lang.Thread.sleep()
2234 * New module: org.simgrid.msg.Mutex (SimGrid mutexes)
2235 * New module: org.simgrid.msg.RngStream (RngStreams random generators)
2237 -- 2012-06-12 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2239 SimGrid (3.7) stable; urgency=low
2241 The "spring cleanups (before the next Big Project kicks in)" release.
2244 * We can specify the SMPI latency/bandwidth factor with command line
2245 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
2246 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
2247 You can also use the "config tag" from platform file by adding this line
2248 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
2249 (see "example/platforms/tag_config.xml" to use "config tag").
2250 Note that the command line supersedes the platform file configuration.
2251 * Change the correction factors used in LMM model, according to
2252 the latest experiments described in INRIA RR-7821.
2253 Accuracy should be improved this way.
2254 * Use the partial invalidation optimization by default for the
2255 network too. Should produce the exact same results, only faster.
2256 * Major cleanup in surf to merge models and split some optimization
2257 mechanisms from the core of the models. As a result you can now
2258 specify which model to use (e.g., --cfg=network/model:LV08
2259 --cfg=cpu/model:Cas01) and which optimization mode to use
2260 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
2261 Incompatible combinations should err at initialization. See
2262 --help-models for the list of all models and optimization modes.
2263 * The CLM03 workstation model was dropped for simplicity because it
2264 used the deprecated CM02 network model. Use default instead.
2265 * Rename the TCP_gamma configuration option to network/TCP_gamma
2266 * Rename the coordinates configuration option to
2267 network/coordinates, and document it
2268 * Use now crosstraffic keyword instead of the terribly misleading
2269 fullduplex keyword. It is activated by default now in the current
2270 default model, use --cfg=network/crosstraffic:0 to turn it off.
2271 * Ongoing refactoring the model parsing to make XML files optional
2272 See include/simgrid/platf.h for details (still to be completed)
2275 * Major overhaul of the documentation. Almost instructive now :/
2276 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
2277 functions and friends. This interface was considered as
2278 deprecated since over 2 years, it's time to inform our users that it is.
2279 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
2280 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
2281 use these (crappy) functions in your code.
2282 These functions will be removed soon. Stop using them now.
2283 * Deprecate MSG_get_host_{table,number}
2284 Implement MSG_hosts_as_dynar() instead.
2285 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
2286 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
2289 * Stabilize the parallel execution mode of user contexts
2290 * Introduce configuration variables to control parallel execution:
2291 - contexts/synchro: Synchronization mode to use when running
2292 contexts in parallel (either futex, posix or busy_wait)
2293 - contexts/parallel_threshold: Minimal number of user contexts
2294 that must be part of a scheduling round to switch to parallel
2295 execution mode (raw contexts only)
2296 * Fix bugs that prevented to use suspend/resume along with
2297 synchronization structures.
2298 * Fix bugs in process termination that lead to invalid memory access
2299 in very specific conditions.
2302 * Introduce a parallel mode for the models (controlled by surf/nthreads
2303 configuration item). In our tests, running the models in parallel
2304 never lead to any speedups because they are so fast that the gain
2305 of computing each model in parallel does not amortizes the
2306 synchronization costs, even when ultra fast futexes are used.
2307 This is released anyway because YMMV.
2310 * Performance boost by using a swag internally to compute the set of
2311 tasks that are finished and should constitute the return value of
2315 * Enable it by default now that it is considered rather stable.
2318 * Documentation of the tracing functions.
2319 * Performance gains when tracing categorized/uncategorized resource
2320 utilization by avoiding calls to get route when updating resource
2321 variables. LMM constraints are being used instead.
2322 * API changed to set task categories. Use MSG_task_set_category instead
2323 of TRACE_msg_set_task_category, and SD_task_set_category instead
2324 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
2325 * Bugfix for graphicator, routes not correctly obtained, memory leaks
2326 * Examples for link user variables added (see at examples/msg/tracing/)
2327 * Deprecated function TRACE_msg_set_process_category completely removed
2328 * Trace header updated according to the latest Paje file format
2329 * Tracing network lazy updates, no longer obligate users to use full updates
2330 * --cfg=tracing/platform:1 also registers power/bandwidth variables
2331 * Experimental: let user code declare/set/push/pop application states for hosts
2332 * API changed to allow the manual creation of graph configuration files
2333 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
2336 * Improve the API of Lua MSG bindings, using the Lua spirit.
2337 * Each simulated process now lives in its own Lua world (globals are
2338 automatically duplicated). It helps writing simulators. Will allow
2339 to run Splay programs within SimGrid in the future.
2340 * Add a Chord example in Lua, equivalent to the MSG one.
2343 * Start the implementation of a solution to express temporal
2344 properties, not only local assertions. This is still an
2345 experimental work in progress, stay clear from it to be safe.
2349 - Add new runtime parameters --help-logs and --help-log-categories
2350 to display information about supported logging parameters and
2352 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
2353 don't exists anymore.
2354 * Mallocators: allow value NULL for the reset function.
2356 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
2357 create homogeneous dictionaries, where all the elements share the
2358 same free function. Non homogeneous dictionaries will be
2359 deprecated in the next release.
2360 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
2361 - Multi-level dictionaries are deprecated.
2363 - new function xbt_dynar_search_or_negative() that is useful when
2364 you have less than 2 million elements in your dynar and don't
2365 want of the extra complexity of catching exceptions when the
2366 element is not found.
2368 - Make xbt_os_thread module (for thread portability) public.
2369 Documentation is still to come, sorry.
2371 - Cleanups and simplifications to make it maintainable again.
2372 - Exotic features (such as memalign and valloc) were removed.
2373 - The metadata were extended and improved so that the
2374 model-checker becomes able to explore and inspect the heaps.
2375 - This may induce a performance drop when enable_model-checking is
2376 ON in cmake (even if it's not used in the simulation), but it is
2377 necessary at this point to get MC working.
2379 Turn model-checking OFF if simulation performance matters to you.
2380 Not enabling it at runtime is not enough, disable it in cmake.
2382 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2385 SimGrid (3.6.2) stable; urgency=low
2387 The "Not coding new stuff allows to polish old things" release.
2390 * New bindings to the NS3 packet level simulator (experimental)
2391 * Use the raw (efficient) execution contexts instead of the sysv
2392 (portable) ones when possible.
2393 * libpcre is now mandatory in any cases since not using it led to
2394 severe performance loss and possibly other issues
2395 * Update the XML platforms:
2396 - G5K: include the latest machine in Nancy
2397 - GridPP and LCG: new platforms
2398 * Documentation was partially updated, at least (more to come)
2400 Bug fixes, cosmetics and small improvements
2401 * Free terminated processes before the end of the simulation to avoid
2402 exhausting the memory of users having very dynamic amount of
2404 * Bug fix and cosmetics about canceling non-running tasks
2405 * Bug fix about the dot loader's issues when using libcgraph
2408 * Create an installer for windows with nsis (amd64 and win32)
2409 - Add an hello world project to illustrate simgrid project creation.
2410 - Embed libpcre into the Simgrid installer to avoid
2411 its compilation burden
2412 * The raw execution contexts should work on Apple now
2413 * Port to Windows 64 bits
2414 - Sysv contexts now have an implementation for this arch
2415 - GRAS communication features now support this arch
2416 * Drop support for borland compiler on windows
2417 - this code was not maintained, and we kinda depend on gcc nowadays
2418 * Fix portability issues on kfreebsd/gnu: build error about semaphores
2419 * Fix portability issue on unstable ubuntu: linker became picky on
2422 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2424 SimGrid (3.6.1) stable; urgency=low
2426 The "Oops, we broke Macs too" release
2429 * Fixed contexts detection so that raw ones are used when possible
2430 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
2431 leads to a strange error, with user code segfaulting sometimes when
2432 the generated code is not perfectly aligned (which is not
2433 controllable from the user side, depends on the amount of code)
2436 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
2438 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2440 SimGrid-java (3.6) unstable; urgency=low
2443 * Split of every thing from simgrid v3.5 into a separate package.
2445 -- 2011-10-05 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2447 SimGrid (3.6) stable; urgency=medium
2449 The Summer Release, also known as the "OMG! They Killed Kenny!" version
2452 * Bindings now constitute their own package, separated from the main one.
2453 Rationale: reduce our maintenance nightmare by reducing the module coupling
2454 They will soon be released on their own on gforge.
2456 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
2457 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
2459 GRAS: It is not considered as stable anymore, but experimental. Sorry.
2460 * It's not quite deprecated for now because we have no replacement,
2461 but it may soon become the case.
2464 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
2465 * Fortran: New user-level cache variable to store the rank of the running
2466 process. This improves performance by an order of magnitude.
2467 * C: New coccinelle script to automatically locate and modify global and
2468 local static variables.
2469 * Improved SMPI network model with a sender-side gap to account for multiple
2473 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
2474 only say if a communication is finished, no matter whether it succeeded or
2475 failed. You can call MSG_comm_get_status() to know the status of a finished
2477 * New function MSG_task_dsend() to send a task and detach it. When a
2478 communication is detached, you are never notified of its success or failure
2479 and the memory is released automatically once it is finished. This function
2480 is useful when you don't care about the end nor the success of a
2482 * Change the prototypes of action replay. Sorry for inconvenience,
2483 but this is really more efficient this way (and to adapt your code,
2484 you just have to fix the initialization, that shouldn't be too long)
2485 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
2486 ever managed to do anything useful with it.
2487 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
2488 takes a dynar of communications. It returns immediately and gives the
2489 index of a finished communication (if any).
2490 * New example: a basic implementation of the Chord P2P algorithm.
2493 * New model for multi-core CPUs. You can now use the core attribute to
2494 precise the number of cores of a host. This is a basic model. Every
2495 process running on the host receives at most the power provided in
2496 the DTD (throughput<=power). Total throughput of process cannot exceed
2498 * New peer tag. This peer tag creates a tiny AS comprising a host and a
2499 router linked by an up-link and a down-link (possibly asymmetrical).
2500 This kind of pattern allows to easily build last-mile model style platforms.
2501 Aggregating such patterns in a rule-based AS is thus the technique of
2502 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
2503 * New model for Vivaldi routing. We transformed the Vivaldi network model
2504 into a Vivaldi routing model (based on the rule-based model). This allows to
2505 combine Vivaldi based latencies with last-mile platforms.
2508 * Added a check for NaN of IEEE754 infinite in the double entries of
2510 * Introduce a new context factory "raw", highly inspirated from the
2511 ucontext factory, but using manually crafted functions in assembly to
2512 do the work in an efficient manner.
2513 * Allow to change the used context factory at run time, not only at
2514 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
2515 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
2516 contexts at runtime (only with raw contexts or ucontexts).
2517 * Completely rewrote this module to allow parallel execution of user
2518 processes. Use --cfg=contexts/nthreads:N to execute user processes
2519 with N parallel threads (the default is 1, meaning no parallelism).
2520 * Allow to decide dynamically between sequential and parallel modes.
2521 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
2522 processes in parallel only when their number is greater than or equal to P
2524 * Added a check for NaN of IEEE754 infinite in the double entries of
2528 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
2529 won't output the state of processes when interrupted with Ctrl-C
2530 * Add a new function xbt_dynar_to_array that transforms a dynar into a
2531 NULL-terminated array. This may solve backward compatibility issues
2532 due to the change to return type of SD_simulate. See also:
2533 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
2534 * Add new macros with variable number of arguments.
2535 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
2536 - in xbt/asserts.h: xbt_assert
2537 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
2538 - in xbt/ex.h: THROWF and RETHROWF.
2539 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
2541 * Change xbt_die() to accept a format string with arguments, just like printf.
2542 * New data structure: xbt_lib_t, like a dict but more general and with better
2546 * New configuration options
2547 Options triva/categorized and triva/uncategorized can be used to generate
2548 graph configuration files for Triva visualization tool.
2549 * Configuration option tracing/platform is renamed to tracing/categorized
2550 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
2551 * New TRACE_user_link_variable interface:
2552 User provides the name of the link and the tracing variable to attach to it
2553 * the declaration of tracing categories must be done after the environment
2555 * simpler tracing interface, just one way to declare categories
2556 TRACE_category or TRACE_category_with_color, it is up to you
2557 * links in the trace file are again identified by their names
2558 * trace contains the full platform hierarchy exactly as declared using the ASes
2559 * Options tracing/msg/[task|process]:1 groups the process by hosts
2560 for both cases, tasks and processes must have names that are unique during the simulation
2561 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
2562 * The experimental option tracing/msg/volume is deprecated
2563 its functionality may be reincorporated if needed
2565 The tracing generates a trace file with unordered timestamped events,
2566 because of the way the core simulator (surf) works. A script available
2567 at the tools directory (fix-paje-trace.sh) can be used to put the events
2568 in order. We have changed the tracing so it can generate ordered timestamped
2569 events in the final trace, but depending on the simulator (and how much time
2570 is simulated) that can lead to a huge memory utilization. It is deactivated
2571 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
2573 Build Infrastructure
2574 * Define a SIMGRID_VERSION macro in simgrid_config.h.
2575 - We are trying hard to keep the API stable, but it may happen that
2576 some things change (we're a research project after all, not a
2577 nuclear plant operating system). If such things should happen, you
2578 could rely on that macro to adapt.
2579 - current value: 30600 for 3.06.00, aka 3.6
2580 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
2581 a number that can be compared with SIMGRID_VERSION.
2582 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
2583 assertions and verbose/debug logging events are disabled at compile time.
2585 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2587 SimGrid (3.5) stable; urgency=medium
2590 * New feature to any SimGrid-based simulator: Model-Checking
2591 Check SIN#1 for more details.
2594 * New Model SMPI (three-interval linear regression for correction factors)
2595 See RR-7426, available at http://hal.inria.fr/inria-00527150
2596 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
2597 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
2598 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
2599 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
2600 * See also src/smpi/README
2605 - Tracing API changes: TRACE_start and TRACE_end should not be called
2606 by user-code. They are automatically called by simulators created
2607 with SimDAG, MSG and SMPI if the toolkit is compiled with
2608 tracing_enabled=ON. Categories declaration and utilization remain the
2609 same for MSG and SimDag.
2610 - A function was added to the tracing API to declare categories with
2612 - TRACE_category_with_color (char *category, char *color)
2613 where color must be in the following format
2614 "%f %f %f", red, green, blue
2615 and red, green, blue are float values in the interval [0, 1]
2616 - User can specify NULL as color parameter, or continue calling
2617 TRACE_category (cat)
2618 On that case, the tracing system will define random colors
2619 - The following command-line options are supported:
2620 --cfg=tracing/filename:msg.trace
2621 --cfg=tracing:1 (activate tracing, needed to use others)
2622 --cfg=tracing/platform:1 (categorized resource use)
2623 --cfg=tracing/uncategorized:1 (uncategorized resource use)
2624 --cfg=tracing/msg/task:1 (task creation)
2625 --cfg=tracing/msg/process:1 (process creation, migration)
2626 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
2627 --cfg=tracing/smpi:1 (SMPI interface tracing)
2628 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
2629 - examples of examples/msg/tracing updated
2631 - DAXLoader and DOTLoader functions can generate tasks with categories
2632 - A new function to attribute a category to SD tasks:
2633 TRACE_sd_set_task_category (SD_task_t task, char *category)
2634 * Tracing the MPI interface implemented by SMPI
2635 - Collective operations are traced with states
2636 - Point-to-Point operations are traced with states/links
2637 - Tracing activated by a parameter "-trace filename" passed
2638 to smpirun during execution (considering that simgrid
2639 is compiled with tracing enabled)
2640 - To run the simulation with gdb, the simulator
2641 accepts --cfg=tracing/smpi:1 to trace SMPI
2642 - tesh files to check if smpi tracing is ok
2643 - See examples/smpi/NAS/DT-trace
2644 * GTNetS tracing re-worked
2645 - adaptation to the tracing system of GTNets to cope
2646 with modifications regarding the fullduplex mode
2647 - new tesh files to check if gtnets tracing is ok
2650 * Asynchronous communications through the functions:
2651 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
2652 * New function: MSG_load_platform_script()
2653 to make possible using a lua script instead of XML files to set up platforms
2654 * New function: MSG_set_function
2655 to associate functions to processes, used when bypassing the parser
2656 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
2658 Platforms: Add some more examples in examples/platforms
2659 * Grid'5000: see www.grid5000.fr
2660 * *_30000_hosts.xml: various huge files [mainly scalability testing]
2663 * Change the XML format. This is a very important modification. SimGrid
2664 3.5 introduces a new hierarchical format based on the notion of
2665 Autonomous Systems. Compatibility with old format is ensured
2666 through the perl script provided in the install bin directory
2667 bin/simgrid_update_xml.
2668 It is now possible to build platforms with specific routing
2669 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
2670 connect several platforms together. We will try to provide soon
2671 set of realistic platforms exploiting these properties (have a
2672 look at examples/platforms/ for the moment).
2673 * Take the opportunity of the XML format change to be a good XML citizen:
2674 rename link:ctn to link_ctn and similar changes (also dealt with by
2676 * Add a new routing scheme (rule-based) using regular expressions. It
2677 enables to have an extremely low memory footprint when the
2678 underlying routing is simple and can be compactly described. You
2679 need to have libpcre4-dev (perl regular expressions) installed if
2680 you want to use this routing scheme.
2681 * Revive the cluster TAG and allow to easily and efficiently (both in
2682 term of memory and speed) connect clusters together. Have a look
2683 at teshsuite/simdag/platforms/ to see how this can be done. With
2684 this tag, you can create clusters with thousands of tasks at no
2685 cost (have a look at examples/platforms/).
2686 Note: clusters are implemented as ASes, so there is no need for an
2687 enclosing AS tag if you have only one cluster in your platform.
2688 * Add new generic functions in the public interface that allows the user
2689 to call SURF 'create_resource' methods from your code (same
2690 functionality as the XML bypass mechanism but with a much lighter
2692 * Add a new model (enabled through command line --cfg=network/model:SMPI)
2693 that uses a piecewise linear approximation to produce better
2694 results when exchanging small messages.
2695 * Add a new parameter to handle correctly full duplex link and account
2696 for interferences between uplink and downlink communications
2697 (activate with --cfg=fullduplex:1).
2700 * Rename the SD_READY (all dependencies are satisfied and task is
2701 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
2702 dependencies are satisfied) state.
2703 This prevents a confusion between the notion of "ready to schedule"
2704 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
2705 simulated" (SD_RUNNABLE) used by the simulation kernel.
2706 * Change the way a task is considered as ready. Instead of removing
2707 dependencies when a task is done, a counter is decreased. This way,
2708 it is always possible to reach ancestors thanks to the
2709 SD_taks_get_parents function (even after the end of the simulation.)
2710 * Change the return type of SD_Simulate from (SD_task_t*) into
2711 xbt_dynar_t. This function was in handling a dynar internally and
2712 converted it into a NULL terminated array for historical reasons.
2713 * New function SD_dotload(char*) to load a DAG described in dot
2714 format. This loader and the corresponding examples require the
2715 installation of the graphviz library.
2716 * Fix a bug in the management of tasks of size 0 in the surf network
2717 models. This problem was only visible with SIMDAG and you should
2718 thus disregard results produced with earlier versions if you
2719 relied on this feature (some tasks were blocked because of this).
2720 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
2721 even though your applications were doing only point-to-point
2722 communications and sequential computations. Now you can really use any
2723 model you want (of course, if you create real parallel tasks, which are
2724 not implemented in most models beside ptaskL07, this will abort).
2725 * Add an example that schedules a DAX on an heterogeneous platform
2726 using a Min-Min strategy.
2727 * New function SD_workstation_get_current_task() that returns the kind
2728 of task currently running on a workstation in the sequential access
2730 * Raise some warnings when unexecuted tasks remains at the end of the
2731 simulation. This is usually caused by cycles in the DAG.
2734 * New function: SIMIX_process_set_function() called by MSG_set_function
2735 * Change the underlying waiting queue in semaphores so that a process
2736 can wait on several of them simultaneously (as in waitany).
2737 * Fix the way to handle tokens in semaphores so that all access patterns
2738 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
2739 * kill the dirty pimple SIMIX_message_sizes_output()
2740 Please use (proper) visualization instead
2743 * New data container: setset (set of sets of elements)
2744 * New module: mmalloc (mapped malloc, allowing to have several
2745 independent segments of malloc)
2746 * New function: xbt_dict_cursor_set_data()
2747 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
2748 * New function: xbt_dynar_is_empty()
2749 * New function: xbt_fifo_get_last_item()
2750 * Fix xbt_dynar_shrink(): use the right element size.
2751 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
2752 uninitialized areas during expand.
2753 * Fix semaphores: previous implementation was severely broken.
2754 * Use library init/fini functions for our initialization.
2755 - you can use logs and other feature as soon as you want in your
2756 code (even before the xbt_init / MSG_init)
2757 - xbt_exit is now a no-op and produce a warning when used.
2760 * Port GRAS to new SIMIX mechanisms. This allows gras users to
2761 benefit from the latest improvement to the simulation kernel.
2762 * Kill measurement sockets for now. If you rely on them, sorry. This
2763 release is not for you. This feature will be reintroduced in the
2764 future, but we cannot delay the release any further.
2765 * New function: gras_msgtype_get_name().
2766 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
2767 * Fix (at last) the pmm example: it should not randomly fail anymore.
2769 Build chain: bug fixes and overall polishing
2770 * Cmake is now stable enough. Hence, we killed the autotools.
2771 * Port to windows ( TM :)
2772 * Fix the 'make install' target.
2773 No need to use 'make install-simgrid' anymore
2774 * Introduce a 'make dist' target compiling a *source* archive
2775 'make package' compiles a binary archive
2776 * Compile java files only on need
2777 * Add --cd and --setenv command line options to tesh
2778 * Out of source builds are not fully supported yet, but we are close
2779 * Enable supernovae and optimization flags by default for our users
2782 * Add layer to set up environment directly from lua, without XML.
2783 * The effect of gras_stub_generator can be achieved through
2784 lua too (check examples/gras/console/ping_generator.lua)
2786 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2788 SimGrid (3.4.1) stable; urgency=low
2790 The "Polishing easter eggs is probably a good idea" release.
2791 This is a bug fixes release only.
2795 * Fix a bug preventing the tasks from begin garbage collected.
2798 * Fix a bug occurring when a host involved in a communication fails.
2799 This was not detected properly by the other peer involved in the
2800 communication. Now, it's reported as a network error.
2803 * Warn the user about loop dependencies in data flow of DAX files
2804 * Obey the control-flow dependencies of DAX files
2807 * Add option "enable_smpi" allowing to not compile SMPI.
2808 Probably useful for the (Mac) users experiencing a build error here
2809 * Improve the detection of lua5.1 and ruby1.8
2811 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
2813 SimGrid (3.4) stable; urgency=low
2815 The "Easter in Cargese" release. Also known as (major changes):
2817 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
2818 ~> bindings were greatly improved
2819 ~> new tracing infrastructure for better visualization introduced
2821 * the "Welcome to configury modernity" release.
2822 ~> we switched from autotools to cmake, and improved our cdash
2825 A more detailled list of changes follow (full detail in svn log).
2827 Java Bindings: Various Cleanups
2828 * (install java-gcj-compat-dev on debian-like to use them)
2829 * Remove put/get: no need to export deprecated interface in Java
2830 Use send/receive instead.
2831 * Cleanup the examples and add a README per directory
2832 * Remove example autoDestination (that's the only way to go now)
2833 * Remove example explicitDestination (was a plain copy of basic)
2834 * Make JniException a runtime exception, so that there is no need to
2835 declare the fact that you may encounter such a beast. I guess that
2836 nobody will ever want to survive such error.
2837 * Create specific errors for each MSG case of failure:
2838 host failure, transfer failure, timeout, task cancelled
2839 * Cleanup the exceptions that may get thrown by each function
2840 * Other internal cleanups in Java bindings. Performance still bad :/
2841 Ruby and Lua Bindings: create them
2842 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
2843 * That's new and great, you should try them out.
2844 Same functionalities than Java bindings, only even less polished
2846 * Kill the useless "rate" argument of SD_task_get_execution_time()
2847 Everyone used to provide -1 as a value, it was not used, and the
2848 semantic of a possible use wasn't even clear.
2849 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
2850 either as comm costs or compute costs to mean that there is no
2851 such thing for that specific task.
2852 * Add a SD_task_set_name() function
2853 * Fix SD_task_unschedule() on typed tasks
2854 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
2855 * In DAX loader, accept useless 'level' attributes to <job> since
2856 LIGO DAGs have them (seem to be to ease graphical representation).
2858 * Add an example masterslave_mailbox.c using send/receive and not
2859 the deprecated put/get interface.
2860 * Kill the MSG_paje_output() function. It's a noop since 2 years.
2861 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
2863 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
2864 (declare MSG_USE_DEPRECATED to still have the old name)
2865 * Add a MSG_task_set_data() function
2866 * About trace replay (see examples/msg/actions):
2868 - Allow to work with splitted trace files for each process
2869 Give the specific trace file as argument of each process,
2870 and call MSG_action_trace_run(NULL)
2871 You can still have one merged file for all processes.
2872 - Fix implementation of collective operations
2873 * Allow task_execute() on 0-sized tasks (closes #10063)
2875 * This is the first release of SimGrid where SMPI is not considered
2876 beta anymore (even if some corners should still be improved)
2877 * Port over the new SIMIX_network submodule (internal refactoring)
2878 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
2879 * Implement more missing elements of the standard:
2881 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
2883 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
2884 MPI_Scan() MPI_Get_processor_name()
2885 - Added implementation of missing case for Alltoall (warning: it's
2886 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
2887 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
2888 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
2889 SMPI_MPI_Allgatherv()
2890 * Bug fixes include:
2891 - MPI_Waitsome() was broken
2892 - Allow relative includes in smpicc
2893 - Command line cfg argument 'reference_speed' was ignored...
2894 - Some functions did not properly lead to auto-benching of user code
2895 - smpicc passes -O2 by default (just like openmpi one)
2897 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
2898 * Bug fixes about timeouts during communications
2899 * add SIMIX_message_sizes_output() as a pimple to write to file the
2900 amount of messages per size. Use gnuplot to get histogram.
2901 Pimple because that's the only user-visible function of simix,
2902 defined directly in xbt.h (irk, sorry)
2904 - Add a SIMIX_sem_get_capacity() function
2905 - Fix interactions with processe resume/suspende
2906 - release_forever() was stupidly broken
2907 - Fix SIMIX_display_process_status() for processes in a semaphore
2908 - Make SIMIX_sem_block_onto() user-visible
2909 * Refactoring context stuff:
2910 - Use pseudo-OOP for better modularity
2911 - reimplement SIMIX_process_kill() without process_schedule() so
2912 that the latter can take as invariant that it is called from
2914 - Merge context_start into context_new for sake of simplicity
2916 * Add a Vivaldi network model, coded live during SUD'10 ;)
2917 * Rename configuration variables to start a hierarchy:
2918 o cpu_model -> cpu/model
2919 o network_model -> network/model
2920 o workstation_model -> workstation/model
2921 * New configuration variables:
2922 o network/bandwidth_factor: correction to bandwidth
2923 o network/latency_factor: correction to latency
2924 o netwotk/weight_S: correction to the weight of competing streams
2925 * Add a long description to the models, that users can see with such
2926 argument on the command line: --cfg=cpu/model:help
2927 * --help-models display the long description of all known models
2929 * config: add the ability to set a default value after registration
2930 Does not override any previously set value (e.g. from cmd line)
2931 * dict: allow to have integer key and data.
2932 When so, you need to use the following functions
2933 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
2934 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
2935 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
2936 In contrary to regular dicts, the key is not malloced before copy.
2937 Mixing scalar and regular elements in the same dict is not tested
2939 * Allow to use xbt_dynar_shrink() to expend the dynar instead
2940 Tracing for Visualization:
2941 * SimGrid is now instrumented in order to generate a trace file for
2942 visualization analysis: to use it, need to compile SimGrid with the
2943 "tracing" option enabled, and instrument the program using SimGrid with
2944 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
2945 (among other functions).
2946 * The instrumentation only traces the platform utilization for now
2947 * Documentation to use the tracing functions and how to analyze the
2948 traces with the Triva tool is written.
2949 * More information about: SimGrid FAQ (in the section Tracing Simulations
2952 * We moved to cmake as default build system. Autotools support will
2953 be dropped soon. Check the FAQ for more info about how to use it.
2954 * Greatly improved our cdash/ctest interactions
2955 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
2956 * Added memory checking tests with valgrind; lot of memleak fixing.
2957 This may be the first release of simgrid with so few memory issues
2958 * Added code coverage tests.
2959 Our coverage is still improvable, but at least we see it on cdash.
2961 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
2963 SimGrid (3.3.4) stable; urgency=low
2965 The "Desktop Grid needs love too" release (also called Xmas release).
2967 Models improvements:
2968 * Major speedup in the maxmin system solving by using lazy evaluation
2969 Instead of solving completely the maxmin system at each iteration,
2970 only invalidate (and recompute) the modified parts.
2971 This new feature is enabled in default models but you can try to
2972 turn it on with "--cfg:maxmin-selective-update=1" for other models.
2973 * Cas01 IMproved as default CPU model
2974 This CPU model is the same Cas01 model, but it uses the
2975 maxmin-selective-update flag and a heap structure to manage
2976 actions on SURF kernel.
2977 It reduces the complexity to find the next action to finish and,
2978 consequently, it's faster than the old Cas01.
2979 This is the new default CPU model (Cas01).
2980 * Rename the old Cas01 model to Cas01_fullupdate
2981 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
2982 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
2983 * CpuTI (CPU Trace Integration)
2984 A new CPU model whose objective is simulate faster when using
2985 availability trace files.
2986 Instead of using a full featured, over engineered maxmin system for
2987 CPU modeling, this model does the pre-integration of traces files
2988 to calculate the amount of CPU power available, and so, executes
2989 faster than the old CPU models.
2990 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
2991 * Use LV08 as default network model since it gives better accuracy
2992 for small messages and shouldn't change things for big ones.
2993 Use --cfg=network_model:CM02 to get the previous behavior.
2996 ******************************************
2997 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
2998 ******************************************
2999 * The new CPU model may changes simulations!
3000 The point is that events occurring at the exact same timestamp
3001 are not scheduled in the same order with the old and new
3002 version. This may be enough to completely change the execution
3003 of simulations in some cases.
3004 * The new network model will change simulations!
3005 This new model is more realistic than the previous one, so you
3006 should consider redoing your old experiments with this model.
3007 Sorry for the inconvenience.
3010 * Introduce the supernovae compilation mode
3011 When compiled that way, the whole SimGrid (or almost) is put in a
3012 single compilation unit and compiled in one shoot.
3013 This is to help gcc which has difficulties to inline stuff from one
3015 The speedup seem to be above 15%, althrough more tests are needed on
3016 amd64 to confirm that gain.
3019 * Port of MSG's mailbox on top of SIMIX network
3020 The put/get mechanism was greatly simplified on the way.
3023 * New SIMIX network module. Provides:
3024 - Mailbox: rendez-vous mechanism to find with who you want to speak
3025 - Synchronous send/recv: easier and hopefully faster since the
3026 logic is handled in the maestro process directly now
3027 - Asynchronous send/recv: you dreamt of it? It's here now
3028 Too bad that nobody cared enough to propagate the change to MSG.
3029 * Add semaphores as SIMIX synchronization mechanism.
3032 * new function SD_daxload(char*) to load a DAX file
3033 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
3034 * Introduce typed tasks. Specify its kind and cost at creation.
3035 At scheduling, just give where it should be placed, and the cost
3036 for each involved resource is automatically computed.
3037 Existing constructors so far (more to come of course):
3038 - SD_task_create_comm_e2e() for end-to-end communication
3039 - SD_task_create_comp_seq() for sequential computation
3040 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
3041 * new function SD_task_dump() for debugging display
3042 * new function SD_task_dotty(task,FILE*) writing to file the info
3043 about the task in dotty format
3044 * SD_task_dependency_exists() can now cope with having one of its
3045 arguments NULL. If so, it tests whether the other argument has any
3047 * Add getters on list of preceding/following tasks:
3048 SD_task_get_parents(task) and SD_task_get_children(task)
3049 * Add getters on amount of workstations and list:
3050 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
3051 * Add getter on task kind: SD_task_get_kind(task)
3052 * Update the start_time and finish_time of tasks on completion/failure
3053 * Bugfix: Remove task from state swags when destroyed
3056 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
3059 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
3060 dynar with one separate thread per value of the dynar.
3061 * Change the prototype of xbt_thread_create(), sorry.
3062 Added a boolean parameter indicating whether we want to join this
3063 thread (used in SG only for now)
3064 * Implement xbt_thread_join and xbt_thread_yield in SG also.
3067 * GTNetS wrappers should now be usable again (and betterly tested too)
3068 * Fix a major regression from 3.2 where the timeout provided to
3069 MSG_task_put_with_timeout() was used as absolute time before which
3070 the comm should be done.
3071 * Start to fix the <cluster> tag.
3072 - Internal links should be good now (beside of the loopback, which
3073 use the private link instead)
3074 - paths to the external world is still rather broken
3075 - the <route:multi> tag is just broken. Actually that's brain-dead.
3076 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
3077 to make it less stupid
3078 ** Check your platform with teshsuite/simdag/platforms/flatifier **
3079 * Fix a source-level compatibility glitch from 3.2: after defining
3080 MSG_USE_DEPRECATED, you can use the old name
3081 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
3082 * Allow to compile from the SVN with automake 1.11
3083 * Fix some problems when using the "start_time" tag in deployment XMLs.
3084 * Fix #8569: XBT/synchro.h has redundant declarations
3085 * Fix #8563: MSG return values and exceptions
3086 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
3087 * Integrate patch #8636: Obey DESTDIR when installing documentation.
3088 Thanks to Robson Peixoto.
3089 * Fix a vicious bug in dictionaries inducing that some elements were
3090 not freed on xbt_dict_free()
3092 Portability report of this version:
3093 * Main portability targets:
3094 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
3095 on (amd64/i386/ia64)
3096 - mac leopard on i386
3097 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
3098 but nothing critical.
3099 * Other platforms: windows, AIX and others were not tested for this release
3101 Timing report of this version:
3102 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
3103 scenario parameters). From 8h to a few seconds in desktop grid settings.
3104 * Supernovae brings about 25% speedup on i386.
3106 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
3108 SimGrid (3.3.3) stable; urgency=low
3110 The "Need for Speed" release.
3112 The timings done to validate the 3.3.2 were faulty.
3113 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
3115 The problem was a conversion from a manually handled vector to
3116 xbt_dynar_t on the critical path.
3117 xbt_dynar_foreach calls functions, inducing stack management crap.
3119 We inlined these functions and xbt_dynar_foreach is now breath taking.
3120 We also inlined xbt_swag_belong on the way.
3122 Here are some approximate speedup measurements (on master/slaves
3123 simulations lasting between 10s and 20s each):
3124 3.3.1 -> 3.3.2: about same performance
3125 3.3.2 -> 3.3.3: 40% speedup
3126 3.3.1 -> 3.3.3: 40% speedup
3127 3.3.1 with inline patch -> 3.3.3: 30% speedup
3129 Our reading is that the refactoring which occurred in 3.3.2 made us
3130 suffer much more from the xbt_dynar_foreach low performance, but
3131 once we solved this, this refactoring proved to be very performance
3132 effective. From the 40% speedup, somehow, 10% are due to the
3133 inlining and 30% to the refactoring.
3135 That's a pitty that gcc cannot inline functions placed in other files
3136 alone. We have to choose between:
3137 - break the encapsulation (by putting private data structures and
3138 accessors in headers files to help gcc)
3139 - live with low performance
3140 - switch to a decent compiler such as icc (not quite possible).
3142 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
3144 SimGrid (3.3.2) stable; urgency=low
3146 The "Simplicity does not preceed complexity, but follows it" release.
3148 The main contributors of this release were (lexical order):
3149 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
3152 * Extract the routing logic into its own object.
3153 (was dupplicated in network.c and workstation_LV07.c;
3154 Allows to implement other ways of storing that info)
3155 => kill now useless network_card concept
3156 - Use dynar to represent routes (instead of void** + int*)
3157 - kill link_set (use surf_network_model->resource_set instead)
3158 - Add a command-line option to choose the routing schema to use
3159 - Add three new models:
3160 * Floyd (shortest path computed at initialization)
3161 * Dijikstra (shortest path recomputed all the time)
3162 * Cached Dijikstra (shortest path computed on need)
3163 All these models where contributed by Silas De Munck, and are
3164 described in his ICCS09 paper.
3166 * Simplify model declaration
3167 (less redirections, less function to write when defining a model)
3168 - Factorize stuff between models:
3171 surf_model_resource_set(model)
3172 surf_model_resource_by_name(model, name)
3173 - Unify the types of models in s_surf_model_t (using an union)
3174 - Embeed fields of common_public directly into s_surf_model_t
3175 - Rename model methods:
3176 action_free ~> action_unref
3177 action_change_state ~> action_state_set
3178 action_get_state ~> action_state_get
3179 - Change model methods into functions:
3180 (model)->common_public->action_use ~> surf_action_ref
3182 * Implement a generic resource; use it as ancestor to specific ones
3183 (allows to kill duplicated code in models)
3184 Drawback: timer command don't need no name nor properties;
3185 workstation_CLM03 don't need no properties
3186 (but I guess we can live with those few bytes wasted)
3188 * Improve the action object model
3189 - implement a constructor avoiding dupplicated code about field
3190 initialization in generic_action part.
3192 * Kill the SDP model: it has an external dependency, is deprecated
3193 in flavor of modern lmm models, and didn't compile since a while
3196 * Relocation of the context module from XBT to SIMIX.
3197 (the context were decoupled from the simix processes, duplicating a lot of code)
3198 => a lot of code was factorized
3199 - less overhead is introduced during scheduling
3200 - simpler API for the context factory
3201 - the logic for process creation,destruction and manipulation was simplified
3202 * Simplification of the s_smx_process_t data structure.
3203 => accesing the simix level data associated to a process is faster now,
3204 and the code is a lot more readable.
3207 * Implement some more MPI primitives:
3208 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
3209 -implementation: Bcast: flat or 2-ary tree (default),
3210 Barrier: 4-ary tree,
3212 Allreduce: Reduce then Bcast
3213 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
3214 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
3215 Alltoallv: flat tree, like ompi
3217 * Add support for optimized collectives (Bcast is now binomial by default)
3218 * Port smpirun and smpicc to OS X
3221 * Kill SD_link_get_properties: hard to maintain and makes very little sense
3222 Shout out if you used it.
3225 * Display the list of still queued messages in SG mode when existing
3229 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
3230 * Add xbt_graph_node_get_outedges() [Silas De Munck]
3231 * Add xbt_str_from_file(FILE*)
3232 * Add xbt_dict_get_key achieving a linear reverse search
3233 * Remove the context module
3235 Portability report of this version:
3236 * Main portability targets:
3237 - Linux(debian)/x86/context
3238 - Linux(debian)/x86/pthreads
3239 - Linux(debian)/amd64/context
3240 - Linux(debian)/amd64/pthreads
3241 On these, we still have the eratic breakages of gras/pmm and
3242 amok/saturate_sg reported in previous version. We still think
3243 that the tests are the cause of the fault, not the tested code.
3245 - Mac OSX Leopard/x86/context
3246 Still false negative in tesh autotesting.
3247 Smpi still fails, but this time because readlink does not accept -f
3248 Everything seems to work properly beside of that.
3251 - AIX version 5.3 (only tested contexts this time)
3252 Smpi still fails there because mktemp is not installed.
3253 Everything seems to work properly beside of that.
3255 I managed to compile it for the first time, but several breakages.
3256 Won't delay the release for this exotic platform.
3258 * Windows: it's still lagging behind. If you want to help, please
3261 Timing report of this version:
3262 This version seem to be more than 5% faster than 3.3.1 (on linux
3263 64bits with contextes). The gain is less than expected, we are
3264 investigating this for next release.
3266 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
3268 SimGrid (3.3.1) stable; urgency=low
3271 * Implement a --cfg-help to show existing configuration variables
3272 * Build chain do not require doxygen in maintainer mode
3275 * fix a bug on struct sizeof computation, which prevented the
3276 exchange of arrays of structs in some conditions
3277 - added a regression test about this in datadesc_usage
3278 * Allow the exchange of 0-long dynamic vectors.
3279 - for that, use -1 as indicator of dynamic size instead of 0
3280 - This implied to change any size from unsigned long to long,
3281 reducing a bit communication abilities, but I guess that with
3282 64bits being quite common, this is more than enough.
3283 - This also induce a protocol change, thus bumping network protocol
3284 version from 0 to 1 (if we have external users, we have to get
3285 clean on that point too ;)
3286 - added two regression tests about this in datadesc_usage
3287 * Be more verbose when propagating local exceptions
3288 This helps debugging.
3289 * Display the status of simulated processes when receiving SIGINT in
3293 * Allow to control the simulation from a trace file.
3294 New functions MSG_action_register() and MSG_action_trace_run()
3295 The first one allows to associate a function execution to each
3296 kind of action while the second one parses a trace file and
3297 triggers the corresponding actions within the system.
3298 For now, only a toy example is provided in examples/msg/actions
3299 * Add an example of process migration in examples/msg/migration
3300 * Fix a bug in task exchange which broke MSG_task_get_sender()
3301 Add a teshsuite regression test for that.
3302 [Bug: if MSG_task_get_sender() is called after sender exit,
3304 * Fix a bug which prevented suspend/resume to work properly
3305 * Display the status of simulated processes when receiving SIGINT
3306 This fixes a regression of v3.3. due to the introduction of SIMIX
3307 * Bug fixing in failure management:
3308 - trace could not start by a failure at time 0
3309 - failure during communications were not working
3312 * Add SIMIX_process_set_name() to change the name of the current
3313 process in the log messages.
3314 * Store smx_hosts in a dict since we only retrieve them by name
3315 * Move the configuration infrastructure to surf
3318 * Move the configuration infrastructure to surf
3321 * Massive internal cleanups:
3322 - Store internal structures on processes instead of hosts (allows
3323 to have more than one process per host, in addition of being more
3325 - Cleanup the initialization/finalization process
3326 - Kill a whole bunch of unneeded synchronization:
3327 processes run in exclusive manner within the simulator
3328 - Move queues from global tables to process data fields
3330 - now accept -platform and -hostfile arguments
3331 - Pass the right rank value to processes according to the hostfile
3332 * Compile the examples by default, and use them as regression tests
3333 * Implement MPI_Wtime()
3334 * Change the reference speed to a command line option
3337 * TCP_gamma can now be specified as command line option using
3338 --cfg=TCP_gamma:10000000.0
3339 * Change the --surf-path cmd line option into --cfg=path:
3342 * Also include strbuff from xbt.h public header
3343 * xbt_ex_display(): do not free the exception after displaying
3344 This allows to do more with the given exception afterward.
3345 Users should call xbt_ex_free() themselves.
3349 Portability report of this version:
3350 * Main portability targets:
3351 - Linux(debian)/x86/context
3352 - Linux(debian)/x86/pthreads
3353 - Linux(debian)/amd64/context
3354 - Linux(debian)/amd64/pthreads
3355 These targets fail about 1/10 of times on gras/pmm, but we believe
3356 that this is because of the test, not because of simgrid.
3357 amok/saturate_sg fails even more rarely, and the test may not be
3360 - Mac OSX Leopard/x86/context
3361 The test suite still spits tons of errors because some obscure
3362 force prevents us from removing the temporary directories
3363 arguing that they still contain some metadata I've never heard of.
3364 Smpi fails because seq is not installed.
3365 Everything seems to work properly beside of that.
3368 - AIX version 5.3 (both contexts and pthread)
3369 Smpi still fails there because mktemp is not installed.
3370 XML inclusions seems rosty on AIX.
3372 * Windows: it's still lagging behind. If you want to help, please
3375 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
3377 SimGrid (3.3) stable; urgency=high
3381 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
3382 [Malek Cherier & Mt]
3384 * Introduce the SIMIX module: factorize code between MSG and GRAS.
3387 Until now, GRAS were using MSG as an interface to SURF. It was
3388 quite difficult because both interface have several differences
3389 (MSG channels vs GRAS sockets were the most notable point).
3391 This also opens the gate to SMPI (which should occur soon) and speed
3392 up simulations by to 40% (even if it were not the main goal).
3394 **************************************
3395 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
3396 **************************************
3397 The point is that events occurring at the exact same timestamp are
3398 not scheduled in the same order with the old and new version. This
3399 may be enough to completely change the execution of simulations in
3400 some cases. Sorry for the inconvenience.
3402 * Cleanup and upgrade the XML format to push further scalability
3403 issues (check http://hal.inria.fr/inria-00256883/ for more info)
3405 * Improve the testing infrastructure with tesh. Now a very large part of
3406 the code is tested not only by being run but also by checking that the
3407 output match an expected output [Mt].
3409 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
3410 is really less memory-demanding, which should allow you to use
3411 larger files in SimGrid [AL].
3413 * Inform valgrind about our contextes, so that it becomes usable
3414 with the default (and more effecient) version of SimGrid
3415 [contributed by Sékou Diakite, many thanks]
3418 * Introduce a listener thread in charge of receiving incoming
3419 messages from the network. It allows to overlap communication and
3420 computation but most notably, it removes some stupid deadlocks due
3421 to the fact that so far, a process could not send and receive at
3422 the same time. This made most non trivial communication schema
3424 * Convert the PIDs from long int to int to match the MSG ones (and
3425 linux ones too) [Mt]
3426 * New function: gras_agent_spawn() to launch a new process on
3427 current host. Only working in simulation for now. [Mt]
3428 * New function: gras_os_hostport() returning a constant form (ie,
3429 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
3432 * Make the backtrace of exceptions more human readable [Mt]
3433 * New module: xbt/str [Mt]
3434 a ton of string utility functions (split, join, printf to a newly
3435 allocated buffer, trim, etc)
3436 * New module: xbt/hash [Mt]
3437 SHA1 hashing algorithm (more to come if needed)
3438 * New module: xbt/synchro [Mt]
3439 synchronization tools (mutex and conditions) working the same way
3440 in simulation and in real life (mainly useful for GRAS, but not
3442 * New module: xbt/queue [Mt]
3443 classical producer/consumer synchronization scheme
3444 * xbt_dynar_new_sync() creates a synchronized dynar. All access
3445 (using the classical functions will get serialized) [Mt]
3446 * Make dictionary internal table dynamic. No need to specify its size
3447 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
3449 * Make sure the log channels are organized as a tree under windows
3450 (because of ANSI C compatibility issue, any channel were child of
3451 root directly) [Mt].
3454 * Cleaned many thing in surf and fixed a few bugs [AL].
3455 * Add a nice command line configuration mechanism to compose models [AL].
3456 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
3457 the previous one (KCCFLN05). It relies on something that looks like
3458 a max-min sharing mechanism but cannot be written as such. A new solver
3459 was thus designed [AL].
3460 * Add a new solver to lmm. Based on Lagrange optimization and
3461 gradient-based descent, it enables to efficiently maximise systems s.a
3463 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
3465 This solver enables to propose two new network models for TCP Reno and
3466 TCP Vegas based on Low's work. These models still need to be fully
3467 tested though [Pedro Velho].
3470 * Bug fix in SD_simulate. Now the time bound given as argument is
3472 * Use the new parallel task model (ptask_L07) as default.
3473 * Use the SURF command line configuration mechanism.
3474 * 0-size tasks (for synchronization) should now work.
3476 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
3478 SimGrid (3.2) stable; urgency=high
3482 We still experience issues on this platform, but we believe that at
3483 least MSG is usable.
3485 GRAS API BREAKAGE (for simplification purpose, sorry):
3486 * the gras_msgtype_by_name is not used anymore. Instead of
3487 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
3488 you can write (and must)
3489 gras_msg_send(toserver, "request", &request);
3490 - If you still want to pass a gras_msgtype_t to the function (to cache
3491 the type and avoid the lookup time), use the gras_msg_send_() variant.
3492 - Impacted functions:
3493 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
3494 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
3495 * The callbacks are now expected to return 0 when everything went well
3496 (just like the main() function)
3498 GRAS new features and improvements:
3499 * New module mechanism where user code can use per process globals [Mt]
3500 This is similar to gras_userdata_*() functions, but for libraries. It
3501 factorize some code developped over and over in the examples and AMOK.
3502 It has still to be documented and used (only amok/peermanagement is
3504 * Fix a vicious bug in the TCP buffering mechanism which leaded to message
3505 loss when they were small enough to fit into the buffer and sent quickly
3506 enough so that they can all get received in one shoot.
3507 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
3508 if not found. Use the *_or_null() variant for the old semantic.
3509 * In gras_msg_handle, do not discard messages without callback.
3510 They are probably messages to be explicitly awaited later (ie, proofs of
3511 mis-synchronization in userland since they are sent before being awaited)
3512 No big deal usually.
3513 * gras_socket_meas_send/recv: semantic changed!
3514 The numerical arguments used to be (1) the total amount of data to send
3515 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
3516 messages. This was need for the fool willing to send more than MAXINT
3517 bytes on quite fat pipes.
3520 * Do really rename the hostmanagement module to peermanagement. [Mt]
3521 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
3522 but this is rather new and this was documented in the module
3523 documentation (poor excuses, I admit)
3524 * Bandwidth measurement semantic changed! This follows the changes to
3525 gras_socket_meas_send/recv explained above.
3528 * A sequential mode has been added to the workstations. When a workstation
3529 is in sequential mode, it can execute only one task, and the other tasks
3530 are waiting in a FIFO. [Christophe Thiery]
3533 * The KCCFLN05 workstation model now handles parallel tasks. It is the
3534 model for SIMDAG. [Christophe Thiery]
3535 * Bug fix in the maxmin solver: Some values were close to 0 instead of
3536 equal to 0, which caused some bad behaviors in
3537 saturated_constraint_set_update. I now use a threshold mechanism like in
3541 * When running manually src/testall, you select specific units [Mt]
3542 testall is the result of our cunit mechanism, and should replace all
3543 the scripty thingy around since bash don't run easily on billware.
3545 * A mallocator system has been added. [Christophe Thiery]
3546 Mallocators allow you to recycle your unused objects instead of freeing them
3547 and allocating new ones.
3549 Documentation update:
3550 * FAQ reworking + New FAQs:
3551 - "Valgrind spits tons of errors!" [Mt]
3552 - "How to repport bugs" [Mt]
3553 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
3554 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
3555 - Communication time measurement within MSG [AL]
3556 - I experience weird communication times when I change the latency [AL]
3557 * GRAS tutorial [Mt]
3559 - an introduction to the framework and to the used communication model
3560 - an initiatic tour introducing the most proheminent features:
3562 . Lesson 0: Installing GRAS
3563 . Lesson 1: Setting up your own project
3564 o Part 2: Message passing
3565 . Lesson 2: Exchanging simple messages
3566 . Lesson 3: Passing arguments to the processes (in SG)
3567 . Lesson 4: Attaching callbacks to messages
3568 . Lesson 5: Using globals in processes
3569 . Lesson 6: Logging information properly
3570 . Lesson 7: Using internal timers
3571 . Lesson 8: Handling errors through exceptions
3572 . Lesson 9: Exchanging simple data
3573 . Lesson 10: Remote Procedure Calling (RPC)
3574 . Lesson 11: Explicitly waiting for messages
3575 . Recapping of message passing features in GRAS
3576 - A HOWTO section containing:
3577 o HOWTO design a GRAS application
3578 More are due, of course. They will come latter. In the meanwhile, you can
3579 check the examples which are still here.
3581 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
3583 SimGrid (3.1) stable; urgency=high
3587 There was a stack corruption somewhere, visible only when optimizing
3588 with these versions. [Vince]
3591 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
3592 module that enabled to play with Directed Acyclic Graphs. It is built
3593 directly on top of SURF and provides an API rather close to the old
3594 SG. Some old codes using SG are currently under rewrite to check that
3595 all needful functions are provided. [Christophe Thiery]
3598 * Complete rewrite of the KCCFLN05 workstation model. It is now an
3599 extension of the classical CLM03 model that gracefully handles
3600 failures. This is now the default model for MSG and GRAS. It doesn't
3601 handle parallel tasks yet though. [AL]
3602 * Bug fix: Weights were not correctly set in the network part.
3603 WARNING: This may have resulted in incorrect results with simulations
3604 where there are more than one flow on a given link. [AL]
3607 * After a (long ?) discussion on simgrid-devel, we have decided that the
3608 convention we had on units was stupid. That is why it has been decided
3609 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
3610 WARNING: This means that all previous platform files will not work as
3611 such with this version! A warning is issued to ask users to update
3613 A conversion script can be found in the contrib module of the CVS, under
3614 the name contrib/platform_generation/surfxml_update.pl [MQ]
3617 * Bug fix: Processes were started in reverse order, wrt deployment file.
3618 WARNING: if your code relies on this bug, please fix it. [AL]
3619 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
3620 being executed on two different locations. [AL]
3621 * Bug fix: Failures are now better supported thanks to Derrick's tests
3622 (there was many failure situations I hadn't thought of and that weren't
3623 correctly handled). [AL]
3624 * New function: MSG_host_is_avail indicates you whether a given m_host_t
3628 * New! a real RPC mechanism, as it ought to be since too long. [MQ]
3629 Exception occurring on server-side are propagated back to client (!).
3631 API CHANGE: the callback changed their prototype. Change:
3632 int my_handler(gras_socket_t expeditor, void *payload_data) {
3634 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
3635 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
3637 * New! function: gras_msg_handleall to deal with all messages arriving
3638 within a given period.
3639 * New! function: gras_socket_server_range to get a server socket in a
3640 range of port numbers (ease to avoid port number conflicts) [MQ]
3641 * New! gras processes display their backtrace when they get a SIGUSR1
3642 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
3643 Sweet to debug RL processes [MQ]
3647 - Do not force experiment sizes to be expressed in kb, or it becomes
3648 impossible to measure the latency this way (needs one byte-long tests)
3649 WARNING: this changes the amok_bw_* function semantic. [MQ]
3650 - Implements the link saturation stuff. [MQ]
3651 * Peer management module:
3652 New! module factorizing code that we wrote over and over [MQ].
3655 * New module: cunit (my jUnit implementation in ansi C) [MQ]
3656 - Test units are placed directly into the library code, they get extracted
3657 automatically and placed into the src/testall binary.
3658 - Convert most of the XBT tests to this system.
3659 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
3660 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
3661 live in the same C code. This required to change a little bit the API
3662 of surfxml parsing but shouldn't be an issue for end-users. [AL]
3663 * New module: sparse graph structure with basic algorithms (this is work
3664 in progress and the API is not considered to be frozen yet). [AL]
3665 * Display more information on backtraces: source line & function names are
3666 now displayed just like valgrind does (rely on addr2line tool) [MQ]
3667 * New function: xbt_backtrace_display(). Sweet while debugging [MQ]
3668 * Reworked a little bit some #include statements to load only required
3669 headers. Some user code that relied on SimGrid to include stdlib or
3670 stdio may need to include it by themselves. [AL]
3671 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
3673 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
3674 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
3675 but I guess that almost nobody used those parts. [MQ]
3677 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
3679 SimGrid (3.0.1) stable; urgency=low
3682 * Unfortunately, I had missed 5 misnamed functions:
3683 xbt_fifo_item_t xbt_fifo_newitem(void);
3684 void xbt_fifo_freeitem(xbt_fifo_item_t);
3685 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
3686 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
3687 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
3688 They're now deprecated. Please use their new versions:
3689 xbt_fifo_item_t xbt_fifo_new_item(void);
3690 void xbt_fifo_free_item(xbt_fifo_item_t);
3691 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
3692 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
3693 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
3695 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
3696 * Documentation: xbt_log module unmercifully reworked [MQ]
3697 * Bugfix: there was a problem with the ending of contexts with
3698 the pthread backend. It caused some weird deadlock or behavior
3699 depending on the pthread implementation. [AL]
3700 * Bugfix: get the exceptions raised in the simulator repport where
3701 and why they come from when they are not caught in time [AL, MQ]
3704 * Bugfix: Do repport the error when two non-connected hosts try to
3705 exchange data (Thanks to Flavien for stumbling into this one) [AL]
3708 * Add additionnal checkings on communications. Assert that two
3709 communicating hosts are connected by a set of links... [AL]
3712 * Add additionnal checkings on channel values in communication [AL]
3713 * New: MSG_task_get_source to see on which host a task was generated [HC]
3714 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
3715 the number of tasks waiting to be received on channel and sent
3717 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
3718 waits for the first task coming from a given host.. [AL]
3720 GRAS new functionnalities: [MQ]
3721 * Enhance the parsing macro to allow the size of multidimentional objects
3722 to be given thru annotations.
3723 * New example (and documentation): Matrix Multiplication a la RPC
3724 (as when I was young!) and fix a bunch of bugs found on the way.
3726 GRAS performance improvements: [MQ]
3728 * Reduce the amount of cbps creation/destruction by making it static to
3729 datadesc_send/recv() and using a (newly created) cbps_reset (based on
3732 * Change libdata to a set so that we can search for stuff by ID (and thus
3733 reduce the insane amount of dict lookups)
3736 * Actually implement gras_datadesc_copy() so that we don't have to mimick
3737 RL communication on top of SG since it's so uneffective.
3738 It may also be used for inter-thread communication in RL, one day.
3739 * Use gras_datadesc_copy() to exchange messages on top of SG
3741 - improve message exchange performance on top of SG
3742 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
3743 * Don't exchange on the network the size of the used part of buffer,
3744 instead, specify the possible buffer size to read().
3746 - reduces the amount of read/write calls (one pair per exchange)
3747 - reduces the amount of exchanged data (the size)
3748 - allows to retrieve all arrived data on receiver side, if we don't need
3749 it right now (subsequent read will peek the buffer)
3750 - allows the receiver to proceed with the beginning of the stream before
3751 everything is arrived
3752 - make it possible to build an iov transport (using readv/writev)
3754 - take care of the data with non-stable storage (like stacked data),
3756 * If possible, TCP send uses vector I/O (when writev() is here)
3757 - Don't use it for receive since we send data sizes and data on the
3758 same stream, so we wouldn't be able to chain large amount of chunks
3759 before having to flush the stuff to read the size.
3760 * Rework the transport plugin mechanism to simplify it and reduce the
3761 amount of pointer dereferencement when searching for the right function
3764 * I guess that now, we do almost as few system calls as possible while
3765 doing as few data copy as possible.
3767 To improve it further, we could try to send all the sizes first and then
3768 all the data (to use iov on receiving size), but it's only a partial
3769 solution: when you have 2 dimensional data, the sizes of the second
3770 dimension is data of the first dimension, so you need 3 streams.
3772 I'm not sure the potential performance gains justify the coding burden.
3774 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
3776 SimGrid (3.00) stable; urgency=high
3779 * New! Give the possibility to hijack the surf parser and thus bypass
3780 MSG_create_environment and MSG_launch_application. Have a look at
3781 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
3783 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
3785 SimGrid (2.96) unstable; urgency=low
3790 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
3791 This deprecates the xbt_error_t mechanisms.
3792 It modifies (simplifies) all XBT and GRAS API.
3793 MSG API keeps unchanged (exceptions raised by XBT are caught from
3794 within MSG and masked with existing error handling facilities)
3797 * New! Add a FATPIPE model. [AL]
3798 * New! Add a parallel task model. [AL]
3799 * New! Add automatically a loopback interface (in the default
3800 network model) if none was precised.
3803 * Bugfix: MSG_process_resume now works with the current running process.
3805 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
3806 * Modification of MSG_task_get_compute_duration. Once a task has been
3807 processed, the value returned by this function is now equal to 0. [AL]
3808 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
3809 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
3810 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
3811 of a m_task. For now, MSG_task_cancel only works with computation
3813 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
3814 of the processor (in Mflop/s) regardless of the current load on the
3816 * API Change: use proper naming convention for MSG_getClock and
3817 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
3819 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
3820 This function changes the priority of a computation task. This priority
3821 doesn't affect the transfer rate. A priority of 2 will make a task
3822 receive two times more cpu power than the other ones. This function
3823 has been added to suit the needs of Nguyen The Loc and hasn't been that
3824 much tested yet. So if it fails, please report it and send me your code.
3826 * API Change: removed all functions and types that were marked "deprecated"
3827 since many months. Renamed MSG_global_init_args to MSG_global_init.
3829 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
3831 SimGrid (2.95) unstable; urgency=low
3834 * Steal some nice code to GNU pth to fix context detection and usage [AL]
3835 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
3836 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
3839 * Bugfix: Allow absolute paths for platform description files [MQ]
3840 * Bugfix: do free the variables after use. Leads to drastic performance
3842 * Implement max_duration (ie, timeouts) on resources [AL]
3845 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
3847 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
3848 the needed support (timeouts) [AL]
3851 * Implement measurement sockets. You can now get the bandwidth between two
3852 hosts thanks to AMOK (see below). [MQ]
3853 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
3854 dynar over the network (yeah) [MQ]
3855 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
3856 * simple/static token-ring example. [Alexandre Colucci and MQ]
3857 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
3858 in place before [MQ]
3861 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
3862 type parsing. "short" and "long" modifiers were also ignored; other
3863 modifier (such as reference level) are still ignored. [MQ]
3864 * Embeed the buffer size within the buffer itself on SG. [MQ]
3865 That way, send() are atomic and cannot get intermixed anymore (at least
3866 the ones which are less than 100k; bigger messages still have the issue)
3867 * Array size pushed by the field, not by the field type (or each
3868 and every long int will push stuff to the cbps) [MQ]
3869 * use select() to sleep since it allows to portably sleep less than one
3872 GRAS (minor cleanups)
3873 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
3876 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
3877 * type category 'ignored' killed as it was never used and were difficult
3879 * whether a type can cycle or not is now a flag, leaving room for more
3880 flags (as "ignored", if we feel the need one day ;)
3881 * Rename raw sockets to measurement sockets since "raw" has another
3882 meaning in networking community.
3885 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
3886 and offers features not belonging to GRAS but that most applications
3887 need. One day, it may be a set of plugins loadable at runtime.
3888 * New module: bandwidth
3889 bandwidth measurement between arbitrary nodes running this module. [MQ]
3891 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
3893 SimGrid (2.94) unstable; urgency=low
3895 The first beta release of SimGrid 3 !
3899 * Update the main page and the FAQ. Adding references to gforge.
3902 * Add a gras_os_getpid function.
3905 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
3906 * Extend the logs so that they also print PID, hostname, date, ... if
3908 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
3909 and kill the old version which were in testsuite/
3910 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
3914 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
3915 for users. Instead, each programming environment (GRAS, MSG,...) use it
3916 when needed to provide such a feature to users.
3917 Don't shortcut the mechanism or you will also shortcut the virtualization
3918 you need on the simulator.
3922 * Cleanups in configury with regard to compile optimization/warning flags.
3923 Also add -fno-loop-optimize to any powerpc since it's the optimization
3924 killing gcc (< 3.4.0).
3925 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
3926 needed by MSG examples complications
3927 * Borrow configury beautifications from PHP
3930 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
3931 warning (thanks loris for stumbling into this one).
3932 * Bugfix: stop loading private headers (gras_config.h) from the public
3936 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
3937 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
3938 RL would imply a DNS resolver, which is *hard* to do in a portable way
3939 (and therefore delayed).
3940 * Implement a real timer mechanism and use it in timing macros. This allows
3941 to avoid rounding errors and get a 0.000005 sec precision in timing
3942 macros. While I was at it, various cleanups:
3943 - allow to declare more than one timed section per file (fix a stupid bug)
3944 - move some private declaration to the right place
3945 - merge conditional execution and timing macros into emulation module
3946 - document the module
3947 - make sure the module cleanups its mess on gras_exit
3948 * Documentation improvements:
3949 - (new) how to compile applications using GRAS
3950 - (new) emulation support (timing macros)
3952 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
3954 SimGrid (2.93) unstable; urgency=low
3956 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
3959 - Use Paje properly where used. Still to be sanitized properly.
3960 - Portability fix: Add an implementation of the contexts using pthread
3964 - Add xbt_procname(): returns the name of the current process.
3965 Use it to show the current process's name in all logging.
3967 - fix detection of older flex version and the reaction, since we do
3968 depend on modern ones (we use lex_destroy)
3969 - Better separation of SG and RL in the libs: remove all simulation code
3970 from libgras. As a result, this lib is now only 200k when stripped.
3971 Some of the xbt modules may also be duplicated (two sets and such) and
3972 should be cleaned/killed before SG3.
3973 - Insist on using xlC on AIX because of weird problems involving gcc there.
3974 - Cleanup the make remote stuff. This is now done by scripts
3975 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
3976 mainly for our private use, but we're working on changing them to user
3979 - Bugfix: flush the socket on close only if there is some *output*.
3980 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
3982 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
3985 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
3987 SimGrid (2.92) unstable; urgency=low
3989 Alpha 3 on the path to SimGrid 3
3993 - New! First try of benchmarking macros.
3994 - New! First try so that gras_stub_generator generate deployment and
3995 remote compilation helpers.
3997 - Bugfix: Initialization fix in msg_test.
4001 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
4003 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
4005 - API Change: gras_os_sleep to take the amount of seconds as a double.
4006 Accepting an int was error prone since it was the only location where
4007 seconds were coded as such. It leaded to damn rounding errors.
4008 - Bugfix: Hard to belive that timers ever worked before this.
4010 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
4012 SimGrid (2.91) unstable; urgency=low
4014 Alpha 2 on the path to SimGrid 3
4018 - Bug fix in the lmm_solver.
4020 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
4021 through the function MSG_paje_output.
4022 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
4023 - It is possible to bound the rate of a communication in MSG with
4024 MSG_task_put_bounded() (was already in the previous version but I had forgotten
4025 to write it in the changelog).
4026 - Bug fix to let GRAS run on top of MSG until we move it directly on top
4031 - Various cleanups to the autotools stuff
4032 - Begin to move Gras examples to examples/gras/
4033 - Let make distcheck work again (yeah!)
4035 - documentation overhauled using doxygen.
4036 gtk-doc-tools is dead in SimGrid now.
4037 - Automatically extract all existing logging categories, and add the list
4038 to the documentation (long standing one, to say the less)
4040 - Cleanup the known architecture table. Reorder the entries to group what
4041 should be, and use a more consistent naming scheme.
4042 (some of the test dataset are still to be regenerated)
4043 - New! Allow library to register globals on each process just as userdata
4045 This is implemented using a xbt_dict and not a xbt_set, so we loose the
4046 lookup time (for now).
4047 Use it in msg and trp.
4048 This cleans a lot the internals and helps enforcing privacy of the
4049 headers between the gras components.
4050 - New! Add a timer mechanism, not unlike cron(8) and at(1).
4051 - Bugfix: gras_os_time was delirious in RL.
4052 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
4054 - Reenable GRAS now that it works.
4056 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
4058 SimGrid (2.90) unstable; urgency=low
4060 Alpha 1 on the path to SimGrid 3
4062 * It is a long time since the last release of SimGrid. I'm sorry about
4063 that but as I had told you, I was rewriting a lot of things. I apologize
4064 to those who had been reporting bugs to me and that I had not answered.
4065 If your bug is still in the new version, please tell me. Here is a
4066 summary of the main changes.
4068 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
4069 lead by Martin Quinson. As a consequence SimGrid gains a lot in
4070 portability, speed, and a lot more but you'll figure it out later.
4071 SimGrid now comprises 3 different projects: MSG, GRAS and SMPI.
4072 I wanted to release the new MSG as soon as possible and I have
4073 broken GRAS, which is the reason why, for now, only MSG is fully
4074 functional. A laconic description of these projects is available
4075 in the documentation.
4077 * REVOLUTION 2: I have removed SG and I am now using a new simulation
4078 kernel optimized for our needs (called SURF but only the developers
4079 should use it). Hence, MSG is now roughly 30 times faster and I think
4080 that by rewriting a little bit MSG, I could event speed it up a little
4081 bit more. Beside the gain in speed, it is also much easier to encode a
4082 new platform model with SURF than it was with SG. More to come...
4084 * REVOLUTION 3: I have tried to change a little as possible the API of
4085 MSG but a few things really had to disappear. The main differences
4086 with the previous version are:
4087 1) no more m_links_t and the corresponding functions. Platforms are
4088 directly read from an XML description and cannot be hard-coded
4089 anymore. The same format is used for application deployment
4090 description. The new format is described in the documentation.
4091 Have a look in tools/platform_generation. There is a tiny script
4092 that converts from the old platform format to the new one. Concerning
4093 the application deployment format, parsing the old one is tricky.
4094 I think most of you should however be able to convert your files. If
4095 it is really an issue, I can write a C code that does the conversion.
4097 2) the toolbox tbx does not exist anymore. We now have a library
4098 with much more data-structures but without the hash-tables (we have
4099 dictionaries that are much faster).
4101 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
4103 *****************************************************************************
4104 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
4105 * don't feel like converting the oldies. (Mt) *
4106 *****************************************************************************
4109 Version 2.90: "the long awaited one"
4110 - Finished rewriting and debugging MSG. Rewrote the documentation.
4111 - disable GRAS for now since it needs to be ported to the newest SG
4114 - Finish the port to windows (using mingw32 for cross-compile)
4117 - Main loop and datastructures of SURF. A cpu resource object is
4118 functional. Surf can thus be used to create cpu's with variable
4119 performance on which you can execute some actions.
4121 2004-11-15 Martin Quinson
4122 - Port to ARM. Simply added the alignment and size descriptions. Should
4123 work, but the ARM machines are so slow that I didn't had the opportunity
4124 to 'make check' over there yet.
4126 2004-11-15 Arnaud Legrand
4127 - Trace manager now written. It uses a heap structure and is therefore
4128 expected to be efficient. It may however be speeded up (particularly
4129 when many events occur at the same date) by using red and black
4130 trees. One day maybe...
4131 - Max-min linear system solver written. It uses a sparse matrix
4132 structure taking advantage of its expected use. Most operations are
4133 O(1) and free/calloc are called as few as possible. The computation of
4134 the minimum could however be improved by using a red and black tree
4137 2004-11-03 Arnaud Legrand
4138 - Rename every gras_* function that was in xbt/ to its xbt_
4140 - Add a heap and a doubly-linked list to xbt
4141 - Added a dichotomy to the dictionaries. make check works as well before
4142 so I assume that the patch is correct. I do not know however if things
4143 run effectively faster than before now. :)
4145 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
4146 SimGrid, and the version number is bumped to 2.x
4148 2004-10-29 Martin Quinson
4149 - Introduction of the remote errors.
4150 They are the result of a RMI/RPC on the remote machine.
4151 ErrCodes being scalar values, you can't get the host on which those
4152 errors did happen. Extending the error mechanism as in Gnome is possible.
4153 No idea yet whether it is a good idea.
4155 2004-10-28 Martin Quinson
4156 - Interface revolution: the Starred Structure Eradication.
4157 I used to do typedef struct {} toto_t; and then handle *toto_t.
4158 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
4159 - ???_t is a valid type (builded with typedef)
4160 - s_toto_t is a structure (access to fields with .)
4161 - s_toto is a structure needing 'struct' keyword to be used
4162 - e_toto_t is an enum
4163 - toto_t is an 'object' (struct*)
4165 typedef struct s_toto {} s_toto_t, *toto_t;
4166 typedef enum {} e_toto_t;
4167 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
4168 s_toto_t) is private.
4170 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
4171 so that it can set the variable to NULL. It was so for dicts and sets,
4172 it changed for dynars.
4174 - Fix a bunch of memleaks in dict_remove
4175 - Fix a bug in sg/server_socket opening: it failed all the time.
4177 2004-10-07 Martin Quinson
4178 - Speed up dynar lookup operation a bit.
4180 gras_dynar_get is dead.
4182 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
4183 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
4184 (which gives you the address of the stored data).
4186 gras_dynar_get_as is an helpful macro which allows you to retrieve a
4187 copy of the data using an affectation to do the job and not a memcpy.
4189 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
4190 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
4192 It does not really speedup the dynar test because they are
4193 setting elements all the time (and look them seldom). But the dict does
4194 far more lookup than setting.
4196 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
4198 2004-10-05 Martin Quinson
4199 - Allow to (en/dis)able the cycle detection at run time.
4201 Whether we should check for cycle or not is now a property of each
4202 datatype. When you think there may be some cycle, use datadesc_cycle_set.
4203 datadesc_cycle_unset allow to remove this property when previously set.
4205 Note that the cycle detection is off by default since it impacts the
4206 performance. Watch the data you feed GRAS with ;)
4208 This property is hereditary. Any element embedded in a structure having it
4209 set have it set for the time of this data exchange.
4211 You should set it both on sender and receiver side. If you don't set it on
4212 sender side, it will enter an endless loop. If you forget on receiver
4213 side, the cycles won't be recreated after communication.
4215 - Header reorganization.
4216 Kill gras_private.h, each submodule must load the headers it needs.
4218 2004-10-04 Martin Quinson
4219 - Interface revolution: do not try to survive to malloc failure.
4221 Now, gras_malloc and friends call gras_abort() on failure.
4222 As a conclusion, malloc_error is not a valid error anymore, and all
4223 functions for which it was the only gras_error_t return value are
4224 changed. They now return void, or there result directly.
4225 This simplify the API a lot.
4227 2004-09-29 Martin Quinson
4228 - Re-enable raw sockets.
4229 Created by gras_socket_{client,server}_ext;
4230 Used with gras_raw_{send,recv}
4233 It should allow to kill the last bits of gras first version soon.
4235 This is not completely satisfactory yet (duplicate code with
4236 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
4239 - Simplify transport plugin (internal) interface by not passing any
4240 argument to _server and _client, but embedding them in the socket
4243 2004-09-28 Martin Quinson
4244 - Finish the port to AIX.
4245 autoconf was my problem (segfault within the malloc replacement
4246 function. No idea why)
4248 2004-09-16 Martin Quinson
4249 - Fix some size_t madness on 64bit architectures.
4251 2004-09-08 Martin Quinson
4252 - Reduce the number of system headers loaded, overload some more system
4253 calls (such as malloc to cast the result of the system one, and work
4255 - Fix and reintroduce the config support
4257 2004-09-07 Martin Quinson
4258 - Source code reorganization to allow Arnaud to surf all over there.
4259 - Allow to document the logging categories.
4260 - Remove all uppercase from logging categories and useless cleanup in names.
4262 2004-08-18 Martin Quinson
4263 Version 0.6.2 (protocol not changed; API changed)
4264 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
4265 gras_error_t), and NULL when not found. Functions expecting a msgtype
4266 as argument (msg_wait; msg_send) deal with NULL argument by providing a
4267 hopefully usefull message.
4268 - Portability to prehistoric sparcs again
4270 2004-08-17 Martin Quinson
4271 Version 0.6.1 (protocol not changed; ABI not changed)
4272 - prealloc some buffers to speed things up
4274 2004-08-11 Martin Quinson
4275 Version 0.6 (protocol not changed; ABI expended)
4276 - The parsing macro can deal with the references, provided that you add
4277 the relevant annotations (using GRAS_ANNOTE(size,field_name))
4279 2004-08-09 Martin Quinson
4280 Version 0.5 (protocol not changed; ABI changed)
4281 - Allow to off turn the cycle detection code in data exchange at
4282 compilation time. It should be at run time, but I'm short of time (and
4283 the config stuff is still broken). That way, we keep dict out of the
4284 critical path, which is good because the performance is poor:
4285 - search not dichotomial yet
4286 - dynar give no way to access their content and memcpy everytime
4287 - In composed data description (struct, ref and so on), stop foolness of
4288 keeping the subtype's ID, but store the type itself. This keeps sets out
4289 of the critical path, which is good since they rely on dynar and
4290 dictionaries. The only loose of that is that we cannot detect the
4291 redeclaration of a structure/union with another content (but I'm not sure
4292 the code detected well this error before anyway). We still can detect
4293 the redefinition discrepancy for the other types.
4294 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
4295 it breaks the code because of type-punning used all over the place).
4296 This breaks on all non-gcc architectures (for now).
4298 All those changes (plus the buffer of last time) allow me to gain 2 order
4299 of magnitude on cruel tests consisting of 800000 array of integers on two
4300 level of a hierarchical structure (200 secondes -> 4 secondes)
4303 - the selector of reference must now return the type it points to, not
4304 the ID of this type.
4306 2004-08-06 Martin Quinson
4307 Version 0.4 (protocol changed; ABI not changed)
4308 - Allow to pass --gras-log argument to processes in simulation mode. Really.
4309 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
4310 - Implement a buffer transport, and use it by default (it relies on tcp in
4311 real life and on sg in simulation).
4312 That's a bit hackish since I had a new field to the structure to store
4313 its data without interfering with the subtype ones. Inheritance
4314 is tricky in C. And that's a kind of reverse inheritance with one class
4315 derivating two classes. Or maybe a game with java interfaces. Anyway,
4316 that's damn hard in C (at least).
4317 Moreover, I got tired while trying to ensure plugin separation and
4318 genericity in SG mode. MSG wants me to do weird things, so let's go for
4319 cruel hacks (temporarily of course ;).
4320 See comment in transport_private.h:71
4321 - do not include all the _interface headers in private but in the files
4322 which really need them (to cut the compilation time when they are
4325 2004-07-26 Martin Quinson
4326 Version 0.3 (protocol not changed; ABI changed)
4327 - Major overhault of the datadesc interface to simplify it:
4328 - shorted the function names:
4329 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
4330 - add a trivial way to push/pop integers into the cbps without malloc.
4331 This allows to make really generic sub_type description, which simply
4332 pop their size of the stack.
4333 - add a function gras_datadesc_ref_pop_arr() which does what users want
4334 most of the time: Declare a dynamic array (which pops its size of the
4335 stack) and declare a reference to it. Poor name, but anyway.
4336 - kill the post-send callback, add a post-receive one
4338 2004-07-23 Martin Quinson
4339 Version 0.2 (protocol changed; ABI changed)
4340 - add some testing for cpbs in the test cases, and fix some more bugs.
4341 This invalidate again the little64 data file, since I cannot regenerate
4343 - remove an awfull optimization in the logging stuff, allowing me to:
4344 - understand it again
4345 - learn gcc how to check that the argument match the provided format
4346 - fix all errors revealed by gcc after that
4347 - internal keys of dict are not \0 terminated. Deal with it properly in
4348 loggings instead of segfaulting when the user want to see the logs :-/
4350 2004-07-22 Martin Quinson
4351 - Fix some stupid bug preventing cbps (callback postit) from working
4353 2004-07-21 Martin Quinson
4354 - Some documentation cleanups
4355 - remove the useless last argument of msgtype_declare
4356 - rename the Virtu functions to fit into the 'os' namespace
4357 - move headers src/include -> src/include/gras/ and stop fooling with
4358 gras -> . symbolic link
4359 - make distcheck is now successful
4361 2004-07-19 Martin Quinson
4363 - Build shared library also
4364 - Install html doc to the right location
4365 - stop removing maintainer files in make clean
4366 - build tests only on make check
4368 2004-07-13 Martin Quinson
4370 - No major issue in previous version => change versioning schema
4371 - Re-enable little64 convertion test now that Abdou kindly regenerated the
4372 corresponding dataset.
4374 2004-07-11 Martin Quinson
4376 - Get it working with any kind of structure (we can compute the padding
4377 bytes remotely for all the architectures I have access to)
4378 - Implement the structure parsing macro (still not quite robust/complete)
4379 - Improvement to the remote testing toysuite
4381 2004-07-10 Martin Quinson
4382 [autoconf mechanism]
4383 - get ride of a bunch of deprecated macros
4384 - actually run the test for two-compliment, not only compile it :-/
4385 - test whether the structures get packed (and bail out if yes. Damn.
4386 Alignment is a serious matter)
4387 - test whether the structures get compacted (but respecting the alignment
4388 constraints of each types)
4389 - test whether the array fields of structures can straddle alignment boundaries
4391 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
4392 (took me 2 hours to find that bug, looking at the wrong place)
4393 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
4394 before sending/receiving and are used to compute the offsets of fields
4395 - Given that padding size depend even on compiler options, keep track of
4396 alignment and aligned_size only for the current architecture. Not a big
4397 deal since we send structure fields one after the other (seems
4399 - Add the datastructure used for IEEE paper by the PBIO guys to the test
4400 program, let it work on linux/gcc/little32. portability todo.
4402 2004-07-08 Martin Quinson
4403 - import and improve remote compilation support from FAST
4404 - make sure make check works on half a dozen of machines out there
4406 2004-07-07 Martin Quinson
4407 Let's say it's version 0.0.3 ;)
4408 - Implement conversions (yuhu!)
4409 - Let it work on solaris (beside conversion, of course)
4410 - Stupid me, using rand() to generate the conversion datatests in not wise.
4412 2004-07-06 Martin Quinson
4413 - Let make dist work, since I'm gonna need it to compile on remote hosts
4414 - Let Tests/datadesc_usage write the architecture on which the file was
4415 generated as first byte.
4416 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
4417 architecture descriptions.
4418 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
4419 on those architectures.
4420 - Optimization: send/recv array of scalar in one shoot
4422 2004-07-05 Martin Quinson
4423 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
4425 - Plug a whole bunch of memleaks
4426 - each process now have to call gras_{init,exit}. One day, their log
4427 settings will be separated
4428 - Continue the code factorisation between SG, RL and common in Transport.
4430 2004-07-04 Martin Quinson
4432 - Redistribution between SG and RL.
4433 We wanna have to accept in SG, so move accepted related parts of RL in
4434 the common part. (more precisely, the dynar of all known sockets is no
4435 more a static in transport.c, but part of the process_data)
4437 [gras_stub_generator]
4438 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
4440 2004-07-03 Martin Quinson
4441 - Create a new log channel tbx containing dict, set, log, dynar (to shut
4442 them all up in one shot)
4444 - Fix the ugly case of reference to dynamic array.
4445 - New (semi-public) function gras_datadesc_size to allow the messaging
4446 layer to malloc the needed space for the buffer.
4448 - gras_socket_close now expect the socket to close (and not its address to
4449 put NULL in it after it). This is because the socket passed to handlers
4450 is one of their argument (=> not writable).
4452 - propagate the interface cleanup from last week in datadesc, ie remove a
4453 superfluous level of indirection. User pass adress of variable
4454 containing data (both when sending and receiving), and not of a variable
4455 being a pointer to the data. Let's say that I like it better ;)
4456 The price for that is constructs like "int msg=*(int*)payload" in
4457 handlers, but it's a fine price, IMHO.
4459 - Let it work in RL (yuhu)
4461 2004-06-21 Martin Quinson
4463 - porting SG plugin and SG select to new standards (works almost).
4464 - plug memleaks and fix bugs around.
4467 - cleanup the prototype of data recv and force users to specify when they
4468 want to handle references to objects. Test case working even for cycles.
4469 - plug memleaks. Valgrind is perfectly ok with this.
4471 2004-06-12 Martin Quinson
4473 - cleanup the separation between plugin and main code in plugin creation
4475 2004-06-11 Martin Quinson
4477 - Reput hook for raw sockets, needed for BW experiments
4478 - kill a few lines of dead code
4479 [Data description] Interface cleanup
4480 - gras_datadesc_by_name returns the searched type or NULL.
4481 That way, no variable is needed to use a type desc once, which makes
4483 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
4484 two parameters were strings (field name, type name), leading to
4486 [Dicos] Interface cleanup
4487 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
4488 This is consistant with the dynar API.
4490 2004-04-21 Martin Quinson
4492 - Porting to new standards.
4494 - interface cleanup.
4495 There is no bag anymore, no need to take extra provision to mask the
4496 pointers behind "ID".
4497 Better splitup of functions between files create/exchange/convert.
4498 This is still a bit artificial since convert and receive are so
4499 interleaved, but anyway.
4501 - add a queued message list to procdata (the ones not matching criteria
4503 - factorize some more code between SG and RL wrt procdata
4505 - use gras_exit in example to track memleaks
4506 - get rid of gs_example now that GS is properly integrated into gras
4507 - update run_test to integrate the latest tests (datadesc)
4509 - rename WARNINGn macros to WARNn since it prooved error-prone
4511 2004-04-19 Martin Quinson
4513 - register init/exit functions within gras module mechanism
4514 - send/receive function.
4515 Convertion is not implemented, but short-cutted if not needed.
4516 struct/array elements are sent one by one (instead of block-wise), but
4517 nobody really cares (yet). Get a prototype before optimizing.
4518 - tests (using a file socket) for DD send/receive on:
4519 - base types: int, float
4520 - array: fixed size, string (ie ref to dynamic string)
4521 - structure: homogeneous, heterogeneous
4522 - chained list, graph with cycle
4523 Believe it or not, valgrind is not too unhappy with the results. The
4524 cycle happily segfaults, but the others are ok. And I'm sick of pointers
4528 - Bugfix when using a filename explicitly (instead of '-')
4530 2004-04-09 Martin Quinson
4532 - factorize more code between RL and SG in socket creation
4533 - Complete the implementation and tests of:
4535 o file (only in RL, and mainly for debugging)
4537 I lost 3 days to design a portable address resolver, and then decided
4538 that the prototype mainly have to run on my box.
4539 Addressing portability too early may be like optimizing too early :-/
4541 - use gras_init in the Tests instead of the crappy parse_log_opt
4542 (the latter function is removed)
4543 [Conditional execution]
4544 - New functions: gras_if_RL/gras_if_SG (basic support for this)
4545 [Code reorganisation]
4546 - Get rid of libgrasutils.a since it makes more trouble than it solves.
4547 Build examples against the RL library, since there is no way to disable
4548 its creation for now.
4550 For information, the beginning of coding on GRAS was back in june
4551 2003. I guess that every line has been rewritten at least twice since