1 SimGrid (3.22) NOT RELEASED (Release Target: December 21. 2018, 22:23 UTC)
4 - Process termination which was broken at version 3.21 has been repaired.
5 - Expose host load plugin: loadInit, getCurrentLoad, getComputedFlops, getAvgLoad
6 - Hide the examples into examples/deprecated. New users should use Python.
9 - Replace our own code to display a backtrace (that was forking addr2line)
10 with the Boost.Stacktrace library.
11 You won't see your backtraces without this optional dependency.
12 - Bump cmake dependency to 3.5 (provided by Ubuntu 16.04).
15 - Drop MSG_process_create_from_stdfunc() from the API.
16 This C++ function was a pimple in the C API, made necessary at some
17 point by the Java bindings. This is fixed now.
18 - Hide the examples into examples/deprecated. New users should use S4U.
19 - MSG_process_create and MSG_process_attach now crash if the host used
20 to run this process is off.
23 - Drop sg_cmdline. Please use xbt_cmdline instead.
24 - Drop the C xbt_os_mutex_t; Use the C++11 std::mutex.
25 - Drop the C xbt_os_sem_t; Use the C++ xbt::OsSemaphore.
26 OsSemaphore is implemented in a portable way with C++11 threads.
27 This should allow much more threads to be created at the same time,
28 allowing Mac and Java users to simulate many more actors.
29 - Implement the 'thread' factory with std::thread instead of xbt ones.
30 It is not possible to set the stack size with threads anymore, but
31 -fsplit-stack is the way to go nowadays when using threads.
32 - Drop the xbt_os_thread_t module (now unused)
33 - Drop xbt_ex_display(), use simgrid::xbt::log_exception() instead.
34 - Drop cunit, use Catch2 instead.
37 - In <host> and <peer>, availability_file is now speed_file.
38 XML file version remains 4.2 since old files are still compatible.
41 - #132: Java : a process can not shut down its own host
42 - #261: Document the parameters of parallel execution's constructor
43 - #300: [s4u] BarrierPtr is missing
44 - #314: SMPI args internal cleanup
45 - #316: Fix a bug related to the CPU utilization of multi-core VM
46 - #318: Invalid trace file when using option --cfg=tracing/smpi/display-sizes:yes
48 ----------------------------------------------------------------------------
50 SimGrid (3.21) October 3. 2018
52 The Restarting Documentation (TRD) Release.
55 - Convert the user manual to Sphinx for improved usability.
56 Unstable version now hosted on https://simgrid.frama.io/simgrid
57 Many glitches remain; stay tuned.
58 - Restrict the Doxygen reference API to the installed header files.
59 (documenting all internals this way is overkill + doxygen scales badly)
60 - New tutorial on S4U (highly inspired from the old MSG one, but with
61 a git repository to fork as a starting point, and a docker image)
62 - Started but not finished a SMPI tutorial inspired from the JLPC'14 one.
63 - The Developper manual is still to be converted (not compiled until then)
64 - Some parts are still missing in this conversion (such as the
65 platform and deployment sections) while others were blindly converted
66 and would need more love (such as the configuration flags).
67 Things will certainly further improve in the future releases.
70 - Fully reimplement auto_restart mechanism that was utterly broken
71 (fix #22, #131 and #281 that were all very related)
72 - Implement semaphores (fix #303 and #291)
73 - When creating an actor from a function and its parameters,
74 move-only parameters are not allowed anymore, as it would prevent
75 the actor to be restartable if its parameters are consumed on run.
76 - s4u::Io: IOs go asynchronous as activities. New methods in s4u::Storage:
77 - io_init(sg_size_t, s4u::Io::OpType) to create a READ or WRITE asynchronous
78 IO operations that can be started, waited for, or canceled as a regular
80 - read_async(sg_size_t) and write_async(sg_size_t) which are wrappers on
84 - Rename 'power' and 'power_used' variables into 'speed' and 'speed_used'
85 - New host variable: 'core_count'
88 - Remove xbt_os_thread_specific features
89 - Remove portability wrapper to condition variables
90 - Remove xbt_os_thread_yield()
93 - MPICH collective selector now mimics MPICH 3.3b
94 - OpenMPI collective selector now mimics OpenMPI 3.1.2 (default "tuned" setting)
95 - MPI_Init(NULL,NULL) is now allowed
96 - smpi/wtime option now injects time in gettimeofday or clock_gettime calls
97 - Command-line arguments should now be handled properly in Fortran simulations
98 - MPI Attributes and related callbacks should work in Fortran
99 - Apps using C + Fortran should now work
100 - MPI_* calls now check for non MPI_SUCCESS return values and emit warnings
101 - Support MPI_Error_String
104 - Due to an internal bug, Msg.run() must now be your last line.
105 We hope to fix it in a future release, and we are sorry for the inconvenience.
108 - #22: Process autorestart seem to only work with CAS01 cpus
109 - #56: Feature request: dynamic SMPI replay
110 - #93: simgrid should not eat --help
111 - #111: How to change the loopback link characteristics?
112 - #116: Platform cluster radical
113 - #117: Platform cluster/host order
114 - #129: Replay_multiple on steroid
115 - #131: Java : autostart does not work
116 - #143: Setting a breakpoint at a given time
117 - #235: Network energy models should be integrated
118 - #264: Add ptask L07 resource tracing
119 - #271: Dynamic and manual replay of SMPI traces
120 - #279: Breakpoints option uses time deltas instead of absolute time
121 - #281: Daemonized actor no longer daemonized after an auto-restart
122 - #282: TIT convertor erase traces when using absolute path in the trace list file
123 - #285: segfault when a s4u actor kills itself with msg process tracing activated
124 - #286: Pajé traces are not exposing the number of cores
125 - #287: Command-line parsing should stop when encountering '--'
126 - #288: MPI_Init(NULL, NULL)
127 - #289: Improve documentation of Actor::on_destruction and this_actor::on_exit()
128 - #290: Method to check if a mailbox has a message ready to be consumed
129 - #291: [s4u] semaphores do not seem available yet
130 - #294: Alltoall collective implementation of mpich
131 - #295: Starting a Host as OFF is not supported
132 - #296: DTD too permissive
133 - #299: Add a s4u barrier example
135 ----------------------------------------------------------------------------
137 SimGrid (3.20) Released June 24. 2018
139 The proxy snake_case() release.
142 - The whole API is now using snake_case() instead of mixing it with camelCase.
143 Compatibility wrappers in place for one year.
144 - We took the opportunity to increase the consistency of the API.
145 Please report any remaining glitches.
146 - New function simgrid::s4u::Host::get_actor_count:
147 Returns the number of actors running on a specific host.
150 - SMPI is now tested with ~45 proxy apps from various sources, with none or
151 only minor patching needed: check https://github.com/simgrid/SMPI-proxy-apps
152 - Replay: The replay file has been re-written in C++.
153 - Replay: Tags used for messages sent via MPI_Send / MPI_Recv are now
154 supported. They are stored in the trace and used when replayed.
155 - Basic support of MPI_Cancel. Robustness not guaranteed.
156 - Support of MPI_Win_allocate_shared, MPI_Win_shared_query, MPI_Comm_split_type
157 (only for MPI_COMM_TYPE_SHARED).
158 - New option: smpi/privatize-libs, to add external shared libs to be privatized
159 by SMPI. They will be copied locally and loaded separately by each process.
160 Example --cfg=smpi/privatize-libs:"libgfortran.so.3;libscalapack.so".
161 - Tracing: add tracing for MPI_Start, Startall, Testall, Testany
162 - Interception of getopt, getopt_long and getopt_long_only calls to avoid issues
163 with internal index optind with multiple processes. Only works if MPI_Init has
165 - Fortran: SMPI builds a mpi.mod file which should allow use of "use mpi"
166 syntax without preprocessing tricks.
169 - Change --cfg=tracing/msg/vm to --cfg=tracing/vm as virtual machine
170 behavior tracing is no longer limited to MSG
171 - TIT (Time Independent Traces): We finally support tags. Unfortunately,
172 this means that traces now need to be updated or re-obtained; both Irecv
173 and Isend lines in your traces have now in total 5 mandatory fields:
174 <rankid> <command> <to/from rankid> <tag> <size>
175 To update your traces, it suffices to add a 0 for the tag here.
176 - TIT now also supports waiting for a distinct request via MPI_Wait.
177 Wait/Test now wait for a specific request, not just the last one that was
178 issued. This unfortunately means another update, because we need to
179 identify which request you want to wait for. We do this via the
180 triplet (sender, receiver, tag), which needs to be added:
181 <rankid> <command> <sender> <receiver> <tag>
182 - Actions are now in lower case (e.g., "allReduce" becomes "allreduce").
183 New script simgrid_convert_TI_traces.py: upgrade your TI traces.
186 - The deprecation of MSG is ongoing (but this should not impact you).
187 Many MSG functions are now simple wrappers on the C API of S4U. If
188 you wish to convert your code to S4U, find the S4U counterparts of
189 your MSG calls in src/msg/msg_legacy.cpp.
190 - MSG can still be used, but won't evolve anymore.
193 - Allow to run the Link energy plugin from the command line with
194 --cfg=plugin:link_energy
195 - Rename Energy plugin into host_energy
196 - Rename Load plugin into host_load
199 - Add parameter --cfg=simix/breakpoint to raise a SIGTRAP at given time.
200 - kill simix::onDeadlock() that was somewhat dupplicating s4u::on_deadlock()
201 - Improve performance when handling timeouts of simix synchros.
204 - Config: the C API is now deprecated (will be removed in 3.23), and
205 the C++ API has been slightly improved.
208 - Fix several build issues on OSX.
209 - Move simgrid_config.h to simgrid/config.h (old header still working)
212 - #143: Setting a breakpoint at a given time
213 - #150: Inconsistent event names in SMPI replay
214 - #258: daemonized actors hang after all non-daemonized actors have completed
215 - #267: Linker error on unit_tmgr
216 - #269: SMPI: tracing of MPI_Wait/all/any broken
217 - SMPI: Fix various crashes with combined use of MPI_PROC_NULL and MPI_IGNORE_STATUS
219 ----------------------------------------------------------------------------
221 SimGrid (3.19.1) Released March 22 2018
223 The Fixed ABI Release.
225 As you may know, we are currently refactoring SimGrid in deep.
226 Upcoming SimGrid4 will be really different from SimGrid3: modular,
227 standard and extensible vs. layered, homegrown and rigid. C++ vs. C.
229 Our goal is to smooth this transition, with backward compatibility
230 and automatic update paths, while still progressing toward SimGrid4.
232 SimGrid remains open during works: The last pure SimGrid3 release was
233 v3.12 while all subsequent versions are usable alpha versions of
234 SimGrid4: Existing interfaces remain unchanged, but the new S4U
235 interface is budding and the internals are deeply reorganized.
237 Since 2015, we work hard to reduce the changes to public APIs. When
238 we need to rename a public library symbol in S4U, we let your
239 compiler issue an explicative warning when you use the deprecated
240 function. These messages remain for four releases, i.e. for one full
241 year, before turning into an error. Starting with v3.15, your can
242 also adapt to API changes with the SIMGRID_VERSION macro, that is
243 defined to 31500 for v3.15, to 31901 for v3.19.1 and so on.
245 Starting with this v3.19.1, our commitment to reduce the changes to
246 the public interfaces is extended from the API to the ABI: a program
247 using only MSG or SimDag and compiled against a given version of
248 simgrid can probably be used with a later version of SimGrid without
249 recompilation. We will do our best... but don't expect too much of
250 it, that's a really difficult goal during such profund refactoring.
252 The difference between v3.19 and v3.19.1 is that the former was
253 accidentally breaking the ABI of MSG, while the later is restoring
256 S4U and kernel APIs will still evolve until SimGrid4, with one-year
257 deprecation warnings as currently. In fact, cleaning up these
258 interfaces and converting them to snake_case() is one release goal of
259 v3.20. But don't worry, we are working to smooth this upgrade path.
261 In summary, new projects should start with S4U to benefit of the
262 future, but old MSG projects should still be usable with no change.
264 ----------------------------------------------------------------------------
266 SimGrid (3.19) Released March 20 2018
268 The Moscovitly-cold Spring release.
270 SMPI user-visible improvements:
271 - Support of MPI_Type_create_subarray
272 - Unimplemented MPI calls now abort (instead of issuing a warning)
273 Some harmless calls around errhandlers still only issue a warning.
274 - MPI_Sendrecv was behaving badly when MPI_PROC_NULL was sender or receiver.
275 - Starting MPI ranks (or even MSG/S4U actors) once the simulation started
276 is now possible (mmap privatization was refactored to this end).
277 Adding new SMPI instances should also be technically doable now.
279 SMPI internal cleanups:
280 - Removed index notion from SMPI -- no more "getPid() - 1"!
281 In tracing files, actors are called rank-<PROCESS-ID> but these are
282 NOT the real ranks (tracing several communicators is not supported yet).
283 - Deprecate smpi_process_index() (will be removed in 3.22)
284 - Better testing on classical proxy apps, through an external project:
285 https://github.com/simgrid/SMPI-proxy-apps/
288 - Use a graphical TOC to make it easier to find the documentation you need
289 - Revamp the MSG tutorial
292 - Fix MSG_task_get_remaining_work_ratio(): return 1.0 for unstarted tasks.
293 - Remove parameter of MSG_process_killall().
294 Resetting the PID was bogus anyway (several actors could have the same PID).
297 - Execution->setHost() can be called after start(), to migrate it.
298 - Comm::test_any() is now implemented.
299 - s4u::Actor now has onCreation() and onDestruction() signals.
300 - Install some kernel header files for the users' plugins and more.
301 Warning, their API is really not stable yet.
302 include/simgrid/kernel/resource/{Action,Resource,Model}.hpp
303 include/simgrid/kernel/routing/*Zone.hpp
306 - SD_task_dependency_add(): remove unused parameters 'name' and 'data'.
308 Build System and other cleanups:
309 - Remove unused run-time parameter "tracing/onelink-only".
310 - SimGrid now works with intel compilers (MC still buggy)
311 - Remove XBT_LOG_CONNECT, it should be useless nowadays.
312 - tesh kills subprocesses on timeout (but not on windows)
315 - Rename FULLDUPLEX into SPLITDUPLEX (old name still accepted)
318 - #194: Feature request: simgrid::s4u::Comm::test_any()
319 - #245: migrating an actor does not migrate its execution
320 - #253: Feature Request: expose clusters as objects
321 - #254: Something seems wrong with s4u::Actor::kill(aid_t)
322 - #255: Tesh broken on Windows
323 - #256: Modernize FindSimGrid.cmake
324 - #257: Fix (ab)use of CMake install
326 ----------------------------------------------------------------------------
328 SimGrid (3.18) Released December 24 2017
330 The "Ho Ho Ho! SimGrid 4 beta is coming to town" release.
332 MSG IS NOW DEPRECATED. Please use S4U for new projects.
333 - Support for MSG should not be removed from SimGrid before 2020,
334 but future evolutions will be limited to the integration of
335 user-provided patches.
338 - s4u::onDeadlock() signal, run before stopping the simulation.
339 - s4u::Exec: asynchronous executions (abstraction of background
341 - s4u::Host->getLoad() returns the achieved speed in flops/s
344 - Link::name() is deprecated and will be removed in v3.21, use
345 Link::getCname() instead.
346 - Mailbox::getName() changed to return a std::string, use
347 Mailbox::getCname() instead to get a char*.
348 - Storage::getName() changed to return a std::string, use
349 Storage::getCname() instead to get a char*.
350 - s4u::allStorages() becomes s4u::getStorageList(whereTo)
351 to have both allocation and deallocation of the map in user space.
354 - Forbid the use of MSG_task_get_flops_amount() on parallel tasks:
355 The amount of flops remaining to do is a vector, not a scalar.
356 - Introduce MSG_task_get_remaining_work_ratio(), which does what its
357 name implies on both sequential and parallel tasks.
358 - Both changes fix GitHub's #223 using PR #237 as a basis.
359 Thanks Michael Mercier.
360 - Most examples were converted to S4U and hidden elsewhere at tests.
361 Rationale: we still want MSG to work; we want newcomers to use S4U.
364 - LMM stuff moved to its own namespace: simgrid::kernel::lmm.
365 - Renamed LMM classes (e.g. s_lmm_system_t -> System).
368 - Switch to the faster dlopen privatization mechanism by default
369 - Documentation improvments
372 - Live migration is getting moved to a plugin. Dirty page tracking is
373 the first part of this plugin. This imply that VM migration is now
374 only possible if one this function is called:
375 - C/MSG: MSG_vm_live_migration_plugin_init()
376 - C/C++: sg_vm_live_migration_plugin_init()
377 - Java: Msg.liveMigrationInit()
378 For C and C++, "simgrid/plugins/live_migration.h" also has to be
382 - Define class simgrid::xbt::Path to manage file names.
383 - Removed unused functions:
384 - xbt/file.h: xbt_basename(), xbt_dirname(), xbt_getline()
385 - xbt/graph.h: xbt_graph_edge_get_length(), xbt_graph_edge_set_length,
386 xbt_graph_export_graphviz()
387 - xbt/str.h: xbt_str_join()
388 - Remove unused datatypes:
389 - xbt/heap.h: use std::priority_queue or boost::heap instead
390 - xbt/swag.h: use boost::intrusive::list instead
393 - New link_energy plugin for the consumption of the links.
394 - All of the operations on files and storage contents have been
395 packaged into a plugin (src/plugins/file_system). The current
396 public interface can be found in
397 include/simgrid/plugins/file_system.h
398 To use these functions you now have to initialize the plugin by
399 calling MSG_storage_file_system_init() just after calling
400 MSG_init() or sg_storage_file_system_init() just after creating
404 - Remove the undocumented/untested tag <include>
407 - Remove viva specific tracing as the tool is no longer maintained
410 - #248: Kill of finished processes leads to segfault
411 - #240: xbt_cond_wait_timeout should gracefully return for C apps
412 - #239: please implement signal s4u::onDeadlock()
413 - #230: segfaults when exit() without run()
414 - #225: s4u::Actor::kill() doesn not really kill victims in a join()
415 - #223: MSG_task_get_flops_amount() not working with parallel tasks
416 - #222: Actor::kill() doesn't really kill and segfaults
417 - #221: odd LMM warning when killing an actor
418 - #120: Memory leak when the processes are forcefully killed
420 ----------------------------------------------------------------------------
422 SimGrid (3.17) Released October 8 2017
424 The Drained Leaks release: (almost) no known leaks despite the tests.
426 Even very long simulations will preserve your memory: our testsuite
427 stresses SimGrid for over 45mn on fast machines for a coverage of
428 over 80%, and there is only one single known leak, of about 4kb.
432 - Comm.detach(): start and forget about asynchronous emission. A cleanup
433 handler may be given to free resources if the comm cannot be completed.
434 - this_actor::send(mailbox) is now mailbox->put()
435 - New: simgrid::s4u::Comm::wait_all()
436 - New: Host.execute() for remote executions.
439 - Unused option network/sender-gap is removed.
442 - Deprecate MSG_task_isend_with_matching(): This unused feature
443 really complicates our internals. Will be removed in v3.20.
446 - Improved context termination. It is now possible to free resources, even
447 when a process is forcibly killed.
448 - ContextBoost: add support for Boost versions above 1.61.
451 - Bring back run-time option --cfg=exception/cutpath to remove exception
453 - Removed unused functions:
454 - xbt/str.h: xbt_str_split_str(), xbt_str_subst(), xbt_str_ltrim(),
455 xbt_str_rtrim(), xbt_str_trim().
456 - xbt/xbt_os_thread.h: xbt_os_thread_cancel(), xbt_os_thread_detach().
459 - Removed header files obsolete since SimGrid 3.12:
460 msg/datatypes.h, msg/msg.h, simdag/datatypes.h, simdag/simdag.h.
462 - #3: SD_exit should be made optional
463 - #120: Memory leak when the processes are forcefully killed
464 - #159: Threading test regression in Actor refcounting
465 - #170: simgrid::s4u::Comm::wait_any() returns too many comms
466 - #185: simgrid::s4u::Engine::instance()->shutdown() segfaults
467 - #186: Actor::killAll() segfaults if some process is blocked on wait()
468 - #191: VM migration and pstate
469 - #192: Updating the energy consumptions of all hosts crashes with VMs
470 - #195: All actors have PID=0 in the logs
471 - #204: Sometimes segfault with thread contexts and mmap privatization
472 - #222: Actor::kill() doesn't really kill and segfaults
473 - #225: Actor::kill() doesn't really kill when victims are doing a join()
475 ----------------------------------------------------------------------------
477 SimGrid (3.16) Released June 22. 2017.
479 The Blooming Spring Release: developments are budding.
482 - FreeBSD: Disable SMPI mmap privatization, switch automatically to dlopen.
483 - Mac, BSD: dlopen+thread broken, switch automatically to raw contexts.
484 - Java JAR file should be finally fully working on Mac OSX too.
486 XML platforms: Switch to platform v4.1 format.
487 * This is (mainly) a backward compatible change: v4 are valid v4.1 files
488 - <zone> can be used as a synonym for the now deprecated <as>
489 - <zoneRoute> can be used as a synonym for the now deprecated <asroute>
490 - <bypassZoneRoute> an be used as a synonym for the now deprecated <bypassAsRoute>
491 - <actor> can be used as a synonym for the now deprecated <process>
492 - state_file and avail_file periodicity is now easier to express
493 (check the documentation) the old behavior should still work.
494 * Storage: not backward compatible, but it seems that nobody ever used it
495 - Remove attribute 'content_type' of <storage_type>: was never used
496 - Make attribute 'model' of <storage_type> optional: for future usage
497 - Remove Bconnection model property: was never (in)validated. Replaced by
498 the maximum of the read and write bandwidth as a resource constraint.
501 - New and Backwards Compatibility break:
502 SD_simulate_with_update (double how_long, xbt_dynar_t changed_tasks_dynar)
503 When one wants to get the list of tasks whose states have changed during a
504 simulation round, s/he has to allocate and free a dynar and use it as
505 argument to this function. The former SD_simulate (double how_long)
509 - Allow multicore VMs, with the correct sharing (unless you overcommit)
510 BUG: vCPU overcommitting still leads to buggy sharing, though. WIP.
513 - New function to update the consumption of all hosts at once.
514 - Fix the model for multi-core hosts, linear in the amount of busy
515 cores with an abnormality for pIdle (see paper).
516 BUG: Still not satisfactory for ptask on mono-cores.
519 - The netzone are now available from the MSG API.
520 The old names still work, but are now deprecated.
523 - New algorithm to privatize globals: dlopen, with dynamic loading tricks
524 - New option: smpi/keep-temps to not cleanup temp files
525 - New option: smpi/shared-malloc-blocksize . Relevant only when global shared
526 mallocs mode is used, allows to change the size of the fake file used
527 (default 1MB), to potentially limit the number of mappings for large runs.
528 - Support for sparse privatized malloc with SMPI_PARTIAL_SHARED_MALLOC()
529 - Fortran ifort and flang compilers support
530 - New RMA calls supported (experimental):
531 - MPI_Win_allocate, MPI_Win_create_dynamic, MPI_Win_attach
532 - MPI_Win_detach, MPI_Win_set_info, MPI_Win_get_info
533 - MPI_Win_lock_all, MPI_Win_unlock_all, MPI_Win_flush
534 - MPI_Win_flush_local, MPI_Win_flush_all, MPI_Win_flush_local_all
535 - MPI_Op_commutative, MPI_Fetch_and_Op, MPI_Compare_and_swap
536 - MPI_Rput, MPI_Rget, MPI_Raccumulate, MPI_Rget_accumulate
539 - New: this_actor::isMaestro() returns whether we are in kernel mode.
540 - Behind the scene, ActivityImpl are now automatically refcounted.
541 Removing this nasty bottleneck will greatly simplify our internals.
544 - Replay: New function xbt_replay_action_get():
545 Retrieve the function previously associated to an event type.
546 - DROPPED FUNCTION: xbt_str_varsubst()
547 - DROPPED MODULE: strbuff. We don't need it anymore.
548 - DROPPED MODULE: matrix. We don't need it anymore.
549 - DROPPED MODULE: lib. We don't need it anymore.
551 -- Thu Jun 22 22:48:12 CEST 2017 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
553 SimGrid (3.15) Released March 22. 2017
555 The Spring Release: continuous integration servers become green
556 We fixed even the transient bugs on all target architectures:
557 Linux (CentOS, Debian, Ubuntu, Fedora), Mac OSX (Mavericks, El Capitan)
558 Windows, FreeBSD, NetBSD.
560 - Rename NetCards to NetPoints.
561 This was intended to help NS3 users, but that's not a netcard.
562 That's a point in the routing algorithm, let's avoid wrong simplifications.
565 - New: MSG_process_yield(). Stop and yield to other processes.
566 - New: MSG_process_daemon(). Daemon processes are automatically killed
567 when the last non-daemon process terminates
568 - New: MSG_process_ref/unref(). Fiddle with the process refcounting.
569 - Renamed MSG_energy_plugin_init() -> MSG_host_energy_plugin_init()
570 to make room for the upcoming network energy plugin.
571 - Drop MSG_host_get_current_power_peak: duplicates MSG_host_get_speed
574 - Ensure that an actor can kill itself with Process::exit()
575 - Kill the obscure NativeException. Nobody want to survive the issues
576 it denotes, so use JniException that is a RuntimeException (not to
577 be caught explicitly).
578 - Partial bug fix in initialization. SimGrid flags on command line were
579 consumed at C level but stayed in the original Java String[] args.
580 This could mess users' args[i] if SG flags were not put at the end of
582 The SimGrid flags are now removed from the Java arguments. However,
583 the number of arguments REMAINS UNCHANGED. It is then UNSAFE to test
584 if args.length is greater than the number of YOUR OWN ARGUMENTS.
585 It might be if you have --log or --cfg flags in the command line.
586 - Fix numerous memleaks all around the place. In particular, around VMs.
590 - s4u::onPlatformCreated: right before the simulation starts
591 - s4u::onSimulationEnd: right after the main simulation loop
592 - s4u::onTimeAdvance: right after a clock change (time is discrete)
593 - s4u::Host::onSpeedChange: when the pstate is changed, or when an
594 event from the availability_file changes the avail speed.
595 - Links are now usable from s4u
596 - New: Engine::hostList() and Engine::hostCount(). Still clumsy.
597 - New: Actor::suspend(), Actor::resume(), and Actor::migrate(new_host)
598 - New examples: The conversion of MSG examples to S4U has begun
599 - Actors: create, kill, migration, and suspend
600 - Applications: master-worker and token-ring
601 - Action replay: communications and storage
602 - Drop Host::getPstateSpeedCurrent() which duplicates Host::speed()
605 - Backwards Compatibility breaks
606 - The SD_route_get_list and SD_route_get_size functions have been removed.
607 They are replaced by the unique
608 void sg_host_route(sg_host_t src, sg_host_t dst, xbt_dynar_t links)
609 The route from src to dst is built in the links dynar whose size can
610 be obtained with xbt_dynar_length.
611 - The SD_route_bandwidth and SD_route_latency functions have been replaced by
612 sg_host_route_bandwidth and sg_host_route_latency.
613 Macros ensure the backwards compatibility, but you should fix your code
616 - Major C++ rewrite ongoing (SMPI used to be C compiled in C++).
617 This can break codes using SMPI internals (from private.h instead of the public smpi.h).
618 - Bump our claim of support from MPI 1.1 to MPI 2.2.
619 We don't support 100% of it, but it should be enough. Contact us if not.
620 - MPI_Win_lock/unlock, MPI_Get_accumulate support added (as for all RMA, implementation is
621 naive and probably inaccurate)
622 - New algorithm for SMPI_SHARED_MALLOC: global, where all blocks are
623 mapped onto a unique small file using some system magic.
624 - Bugfix: smpirun was sometimes misusing hostfile when wrongly terminated
625 - Fortran: cleanups, fixes, support of user-added operations
626 - RMA: MPI_Accumulate are applied in correct order.
627 - RMA: MPI_Win_{complete/post} shouldn't miss messages anymore.
628 - Better support for MPI_IN_PLACE
629 - Support for MPI_Win attrs and keyvals.
630 - Support MPI_Comm_group_create, MPI_Type_size_x
631 - MPI ops should be properly applied to all allowed types
632 - Replace implementation of MPI_Bcast "scatter followed by rdb allgather"
633 algorithm by a non failing one from mpich.
636 - Kill the fifo data container: we don't use it anymore.
639 - A <cluster> can now be created with different speed values to represent pstates.
640 see examples/platforms/energy_cluster.xml for an example.
642 SimGrid (3.14.159) Released December 28. 2016
644 The previous release was only a crude approximation of a Pi release;
645 this one should be a bit better.
647 - Revert a last minute change that broke on Mac OSX.
648 - Fix the changelog and NEWS files.
649 - Improve the documentation, in particular of the routing module.
650 - Integrate some patches flying around in Debian.
652 SimGrid (3.14) Released December 24. 2016
655 * The whole documentation was reworked and reorganized. There is
656 still much room for improvement here, but we're on it.
659 * We now need python3 for our testing infrastructure.
660 * Model checking needs libevent
663 * Now works on FreeBSD
666 * Privatization now works on FreeBSD
668 * Privatization is now activated by default in smpirun
669 You can turn it off with -no-privatize if something goes wrong.
671 * Call-location tracing for SMPI.
672 You can add the exact location (filename / linenumber) of an MPI call to
673 your trace files and slow down or speed up the simulation between two
674 consecutive calls by using an adjustment file (see the documentation).
676 * Fixed computation of timings for MPI_Send, MPI_Recv & possibly also others
677 We've found a bug that prevented SMPI to account for MPI_Send, MPI_Recv
678 and others (in some cases) in a correct way. That is, the smpi/os, smpi/or
679 values were ignored in some cases. The timings of these functions can now
680 be significantly different.
682 * smpi/cpu-threshold:-1 should become smpi/simulate-computation:no
683 smpi/running-power is renamed to smpi/host-speed
685 * smpi/grow-injected-times option to enable or disable multiplication of the
686 timings injected in MPI_Iprobe, or MPI_Test. Enabled by default, which can
687 make simulation less precise (but also much faster).
689 * smpirun script should be (much) faster for large deployments.
691 * SMPI tracing: fixed issue with poor matching of send/receives.
693 * Replay: Fix broken waitall
695 New functions and features
696 * MSG_parallel_task_execute_with_timeout, to timeout computations.
698 Dropped / renamed functions and features
699 * msg_mailbox_t and associated functions. Use s4u::Mailbox instead.
700 - MSG_mailbox_is_empty() -> Mailbox::empty()
701 - MSG_mailbox_front() -> Mailbox::front()
702 - MSG_mailbox_get_by_alias() -> simgrid::s4u::Mailbox::byName(name)
703 - MSG_mailbox_get_task_ext() -> MSG_task_receive_ext()
704 - MSG_mailbox_get_task_ext_bounded -> MSG_task_receive_ext_bounded
705 - MSG_host_(get/set)_params -> MSG_vm_(get/set)_params
706 * Don't pass the free_f parameter to property related functions:
707 - MSG_host_set_property_value()
708 - MSG_as_router_set_property_value()
709 - MSG_storage_set_property_value()
710 * VM properties. Since msg_vm_t are msg_host_t, just use
711 MSG_host_get_property_value() and friends
712 * VM I/O related things:
713 - Ignored parameter of vm_create: core_nb, disk_path and disk_size.
714 - Unimplemented save/restore methods
715 * MSG_as_router_get_property_value() was redundant with
716 MSG_environment_as_get_property_value().
717 - Removed MSG_as_router_*propert*() functions
718 - Added MSG_environment_as_set_property_value() for consistency
719 * xbt heterogeneous dictionnaries (created with xbt_dict_new()).
720 Well, they are still there for now, but deprecated with a warning.
721 Please switch to xbt_dict_new_homogeneous() before this is removed
723 * Task affinity. Its intended behavior (that was very badly tested
724 and probably not really working) was deceiving what most users
725 would have hoped here.
726 * xbt_os_sem_get_value: unused internally, deprecated on OS X El Capitan
727 * Option network/coordinates is now useless and should be dropped.
730 * Added option storage/max_file_descriptors to allow more than 1024 files opened
733 * Added option maxmin/concurrency_limit to allow more than 100 processes per host
734 * Added Dragonfly topology support
737 * Add Exa- and Peta- units such as EiB, EB, Eib, Eb for size, and
738 EiBps, EBps, Eibps, Ebps for bandwidth.
739 They may become useful to some lucky ones.
742 * New functions: msg.Comm.waitAll() and msg.Comm.waitAny()
743 * ex/app_tokenring: new example, very similar to the MSG Token Ring
744 * ex/async_waitAll: new example, on asynchronous communications
747 * Memory usage should be decreased for simulations with a large number
748 of processes. This also helps for SMPI.
750 SimGrid (3.13) stable; urgency=low
752 The Half Release, a.k.a. the Zealous Easter Trim.
754 - We removed half of the lines, that were mostly experimental cruft.
755 v3.12 lasted 286000 lines of code, v3.13 is only 142000 lines
756 (not counting blanks and comments -- according to openhub.net)
757 - The internals are now compiled in C++ (and will soon be clean C++)
758 - We removed 75 klines of XML, 12 klines of Java, 5 klines of cmake,
759 59 klines of C, etc. We added only 29 klines of C++ in replacement.
761 * Backwards Compatibility breaks
762 - Removed Lua simulation bindings (switch to C or Java for that).
763 Lua can still be used to describe platforms
764 - Removed Java kernel plug-ins.
765 Will be reintroduced after the ongoing major internals reorg.
767 - the following functions were removed.
768 They were too specific and should be reimplemented in a generic
769 way, with filter function.
770 - MSG_task_listen_from_host
771 - MSG_mailbox_get_count_host_waiting_tasks
772 - MSG_mailbox_put_with_timeout was removed.
773 Please use MSG_task_send_with_timeout instead.
775 - the SD_application_reinit function was removed. It has been a noop for a while.
776 - The ACCESS_MODE of SD_workstation has been removed. This feature was not really usable and should soon be
777 replaced by a more flexible mechanism.
778 - The following functions thus do not exist anymore
779 - SD_workstation_get_access_mode
780 - SD_workstation_set_access_mode
781 - SD_workstation_get_current_task
782 - Basic estimation functions have been removed but can easily be replaced
783 - SD_route_get_communication_time => SG_route_get_latency() + amount / SD_route_get_bandwidth()
784 - SD_workstation_get_computation_time => amount / sg_host_speed()
786 - VM.setBound(int load) is now VM.setBound(double bound) to meet the MSG semantics.
787 Use VM.getSpeed()*load/100 for the legacy behavior.
789 - option enable_tracing was removed. It was not doing anything for a while.
790 - In the ModelChecker:
791 - the model-checker now ptraces the model-checked process which means
792 you cannot use a debugger on the latter anymore (we might make this
793 optional in the feature);
794 - removed soft-dirty page tracking;
795 - remove model-checked side snapshot management,
796 MC_snapshot() and MC_compare_snapshot();
797 - keep the MC_cut() function as a stub (it was not really working
798 in the previous release).
801 * All options are consistently in kebab-case. Old names are kept as alias.
804 * Switch to platform v4 format.
805 - Rename from 'power' to 'speed' the attributes describing the amount of
806 flops that a <host>, <peer>, <cluster> or <cabinet> can deliver per second.
807 - In <trace_connect>, attribute kind="POWER" is now kind="SPEED".
808 - In <host> and <link>, attributes availability and state are gone.
809 It was redundant with state and availability traces, and with peak values.
810 - In <cluster>, attributes availability_file and state_file are gone.
811 It was too complex and unused.
812 - Kill <gpu>. Was not doing anything.
813 - The DOCTYPE points to the right URL:
814 http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd
815 (the file at this address now documents the changelog since its v1)
816 - A warning is emitted for unit-less values (they are still accepted).
817 - speed. Default: 'f' or 'flops'. Also defined:
818 'Yf', 'Zf', 'Ef', 'Pf', 'Tf', 'Gf', 'Mf', 'kf'
819 'yottaflops', 'zettaflops', 'exaflops', 'petaflops', 'teraflops', 'gigaflops', 'megaflops', 'kiloflops'
820 - bandwidth. Default: 'Bps' bytes per second (or 'bps' for bits but 1 Bps = 8 bps)
821 Also defined in bytes: 'TiBps', 'GiBps', 'MiBps', 'KiBps', 'TBps', 'GBps', 'MBps', 'kBps', 'Bps'
822 And the same in bits: 'Tibps', 'Gibps', 'Mibps', 'Kibps', 'Tbps', 'Gbps', 'Mbps', 'kbps', 'bps'
823 - latency. Default: 's' second. Also defined:
824 'w' week, 'd' day, 'h' hour, 'm' minute, 'ms' millisecond, 'us' microsecond, 'ns' nanosecond, 'ps' picosecond
826 * bin/simgrid_update_xml can upgrade your files automatically (won't convert unit-less values)
827 tools/sg_xml_unit_converter.py may help (but it's just a warning and will probably ever be).
830 * s4u::Host is now the preferred public interface to the Host features.
831 sg_host_* functions are C bindings to the exact same behavior
832 MSG_host_* and SD_workstation_* are #define to the sg_host_* ones
835 * The examples were completely reorganized (in C and Java), for your browsing pleasure.
836 * Kill all deprecated functions (the ones you had when declaring MSG_DEPRECATED).
837 They were deprecated since a few years, and probably did not even compile anymore.
840 * The API has been profoundly modified to directly use the core objects instead of redefining its own.
841 SD_Workstation_t and SD_link_t are now sg_host_t and sg_link_t respectively.
842 Some functions have also been renamed for consistency. Backward compatibility is maintained, but users are
843 encouraged to update their codes. A list of the modified functions can be found at the end of
844 include/simgrid/simdag.h
847 * simgrid::simix::kernelImmediate() is the closure callback. It ensures that
848 the lambda or closure passed as a parameter will run in kernel mode.
849 All the callback functions should be rewritten to that interface at some point.
852 * Reorganizing and cleaning the internals all around the place.
855 * Remove old default barrier/bcast buggy algorithms (see #18407)
856 * Various bug fixes to handle more codes
857 * Remove the need for the --foreground option of smpirun (it is still
858 accepted for backward compatibility).
861 * Kill the setset data container: MC don't use it anymore.
862 * Kill the queue data container: it made more sense with GRAS.
863 * Kill the xbt_peer_t data type: it's useless without GRAS.
864 * Kill rm_cb feature of config sets: it was never useful.
865 * Kill graphxml parsing feature. It was not used.
866 * Kill the deprecated code protected by XBT_USE_DEPRECATED
868 - xbt_dynar_sort_strings(), when the content is char*
869 - xbt_str_parse_int / xbt_str_parse_double, wrapping strtol/strtod
870 They throw exceptions on invalid input;
871 * C++ support for declaring CLI flags (simgrid::config::Flag);
872 * class for abstracting different signal backends (simgrid::xbt::signal).
873 with no external dependencies (we need very simple signals).
876 * refactoring and cleanup of the code;
877 * ongoing process to cleanly separate the model-checking algorithms
878 from the code model-checking support.
880 -- Wed Apr 27 21:00:53 CEST 2016 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
882 SimGrid (3.12) stable; urgency=low
884 The Facelift Release.
887 * Require g++ v4.7 at least to not speak prehistorical C++.
888 * Require Boost 1.48 (for signal2 component).
889 * Java must be version 7 at least when activated.
890 * Builds on Windows again (including Java bindings).
891 * Tracing is now always enabled (no way to turn it out)
892 * Remove GTNetS. It was not working anyway.
893 * Various cleanups in the cmake scripts.
894 * Move headers around to sort them out on installed systems:
895 - instr/instr.h -> simgrid/instr.h
896 - instr/jedule/* -> simgrid/jedule
897 - simdag/datatypes.h was removed
898 - simdag/simdag.h -> simgrid/simdag.h
899 - msg/datatypes.h was removed
900 - msg/msg.h -> simgrid/msg.h
903 * Interface improvement:
904 - Rename MSG_host_is_avail(h) to MSG_host_is_on(h)
905 - Sanitize the interface in MSG_task_ module:
906 - Merge two functions that were close enough but misleading:
907 set_compute_duration(t) -> set_flops_amount(t)
908 get_remaining_computation(t) -> get_flops_amount(t)
909 - set_data_size(t) -> set_bytes_amount(t)
910 get_data_size(t) -> get_bytes_amount(t)
911 - Massive cleanups in the functions related to the energy
912 - MSG_host_get_pstate_number() -> MSG_host_get_nb_pstates()
913 - New: MSG_host_get_pstate()
915 - msg/energy/onoff: switching hosts on and off
917 * Interface improvement:
918 - Rename Host.isAvail() to Host.isOn()
919 - Rename Process.currentProcess() to Process.getCurrentProcess()
920 - Rename Task.setDataSize() to Task.setBytesAmount()
921 - Merge Task.getRemainingDuration() and Task.getComputeDuration() into Task.getFlopsAmount()
923 - #18874: Actually allows the GC to reclaim tasks
927 - SIMIX_process_throw: raises an exception in a remote process
928 * Refactoring: Separate sub-modules
929 - libsmx: the public interface, as libc in a real system
930 - popping: the strange dance that converts a user request into a kernel handling
931 - smx_context_*: the virtualization mechanisms that embed the user code
932 - smx_*: the handling of each simcalls
934 - simcall_host_set_power_peak_at -> simcall_host_set_pstate
935 * Rename smx_action_t into smx_synchro_t, making explicit that these
936 things are used to synchronize processes with their environment.
937 For example, a communication is a sort of synchronization involving
938 the communicating processes (that may block until the exchange) and
939 the platform. The same can be said from computations, etc.
941 - #18888: segfault when a process ends before its kill_time
945 - 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.
946 - MPI_Keyval*, MPI_Attr* functions, as well as MPI_Comm_attr*, MPI_Type_attr* variants (C only, no Fortran support yet)
947 - MPI_Type_set_name, MPI_Type_get_name
948 - MPI_*_c2f and MPI_*_f2c functions
949 - MPI_Info_* functions (beware, get_nthkey may not follow the insertion order)
950 - MPI_Pack, MPI_Unpack and MPI_Pack_size functions
951 - Activate a lot of new tests from the mpich 3 testsuite
953 - Constant times can be injected inside MPI_Wtime and MPI_Test through options smpi/wtime and smpi/test
954 - InfiniBand network model added: Based on the works of Jerome Vienne
955 http://mescal.imag.fr/membres/jean-marc.vincent/index.html/PhD/Vienne.pdf
956 - When smpi/display_timing is set, also display global simulation time and application times
957 - Have smpirun, smpicc and friends display the simgrid git hash version on --git-version
958 * Collective communications
959 - 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
960 - 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/).
961 - Support for Rabenseifner Reduce/Allreduce algorithms (https://fs.hlrs.de/projects/par/mpi//myreduce.html)
963 - Replay now uses algorithms from wanted collective selector
964 - Replay can be used with SMP-aware algorithms
965 - Memory occupation of replay should now be contained (temporary buffers allocated in collective algorithms should be shared between processes)
966 - 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.
968 - [#17799]: have mpi_group_range_incl and mpi_group_range_excl better test some corner cases
969 - Correctly use loopback on fat-tree clusters
970 - Asynchronous small messages shouldn't trigger deadlocks anymore
971 * Energy/DVFS cleanup and improvement
972 - smpi_set_host_power_peak_at() -> smpi_set_host_pstate()
973 - new: smpi_get_host_pstate()
976 - "Full" network optimization flag was broken since Surf++
977 - Better handling of precision flags in maxmin
978 - Fix bug causing sometimes "Impossible" errors
979 - Properly pass cluster properties to included hosts
980 * Improvement of the Energy plugin.
981 - Always update the consumption before returning that value
982 - New property: watt_off to denote the dissipation when the host is off
983 - New functions getWattMinAt and getWattMaxAt to retrieve the
984 dissipation of pstates that we are not currently at.
985 * Java: class NetworkLink renamed to Link
986 * New function: simcall_process_get_kill_time()
987 * Massive rename s/workstation/host/
988 - That's intrusive, but that's good for the project consistency. Sorry.
989 - Change config option "workstation/model" into "host/model"
992 - Add a xbt_heap_update function, to avoid costly xbt_heap_remove+xbt_heap_insert use
993 - Add a xbt wrapper for simcall_mutex_trylock (asked in [#17878])
994 - Add two new log appenders: rollfile and splitfile. Patch by Fabien Chaix.
995 - xbt_dirname and xbt_basename for non-POSIX systems
997 * The model checker now runs as a separate process.
998 * The model checker runs must now be launched with the new simgrid-mc program.
999 * Record/Replay: the MC can display a textual representation of a path in the
1000 execution graph. It can then be replayed outside of the model checker.
1002 -- Mon Oct 12 06:02:41 CEST 2015 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1004 SimGrid (3.11) stable; urgency=low
1009 * Normalizing pointers addresses tool for better diff between logs
1012 * Add cloud examples using new VMs
1013 - examples/msg/cloud/two_tasks_vm.tesh
1014 - examples/msg/cloud/simple_vm.tesh
1015 - examples/java/cloud/cloud.tesh
1016 - examples/java/cloud/migration/migration.tesh
1017 * Add java surf examples:
1018 - examples/java/surfPlugin/surf_plugin.tesh
1019 - examples/java/reservationSurfPlugin/reservation_surf_plugin.tes
1020 - examples/java/surfCpuModel/surf_cpu_model.tesh
1021 * Add SMPI+MSG example:
1022 - examples/smpi/smpi_msg_masterslave/
1027 - msg task destroy cancel test
1028 - msg_host on/off test
1029 * Move all tests in testsuite to teshsuite (adding tesh files)
1030 * Restructure teshsuites
1031 - one folder for each kind of test
1032 * Restructure AddTests.cmake
1034 - structure the order of tests (with sections)
1037 * Add virtual machine
1038 - creation of a VM on a PM
1039 - migration of a VM from a PM to another PM
1041 - MSG_process_join(msg_process_t process, double timeout)
1042 - msg_bar_t MSG_barrier_init(unsigned int count)
1043 - int MSG_barrier_wait(msg_bar_t barrier)
1044 - void MSG_barrier_destroy(msg_bar_t barrier)
1045 - msg_as_t MSG_environment_as_get_by_name(const char * name)
1046 * New option "msg/debug_multiple_use" to help debugging when a task is used
1049 - Improvements and finalization of MSG_storage, MSG_file APIs and their
1051 - Increase code coverage in test suites
1055 * Protect context stacks against stack overflow. The number of protected memory
1056 pages allocated on the top of each stack (1 by default) can be configured
1057 with the new command line option --cfg=contexts/guard_size:<value>.
1058 * Simcalls are now generated by a python script that
1059 - generates files included by SimGrid
1060 - checks that all the functions exist, and proposes prototypes
1062 - remove sem_destroy, file_set_data, comm_destroy, vm_set_state,
1063 host_set_data, host_get_data
1065 - simcall_process_join(smx_process_t process, double timeout)
1066 * Fix bug where sleeping processing could not be suspended.
1069 * Translate surf models from C to C++
1070 - Generic classes for all models: Model, Resource, Action
1071 - A generic interface for each kind of model (CPU, Network, Storage
1072 Workstation, WorkstationVM)
1074 * Translate surf routings from C to C++
1075 * Add callbacks using sigc++ or boost::signals2
1076 - Add callback functions for resource creation/destruction
1077 - Add callback functions for action state change
1078 - Handle Energy as a plugin
1079 * Replace swag by boost::intrusive
1080 * Add new routing models for clusters. For documentation, see
1081 http://simgrid.gforge.inria.fr/simgrid/latest/doc/platform.html#pf_cluster
1082 - tori, with topology="TORUS" and topo_parameters="ndim1,ndim2,...,ndimn"
1083 parameters for cluster tag
1084 - Fat trees, with topology="FAT_TREE" and
1085 topo_parameters="h;m1,...,mh;w1,...,wh;p1,...,ph" parameters for cluster tag
1086 - see examples/platforms/torus_cluster.xml and
1087 examples/platforms/fat_tree_cluster.xml
1088 * More documentation
1091 * Hostfiles support host:nb_processes construct to deploy several processes on
1093 * Collective communication algorithms should not crash if used with
1094 improper number of nodes and report the error.
1095 * SMPI now partially supports MPI_Topologies: MPI_Cart_create, MPI_Cart_shift,
1096 MPI_Cart_rank, MPI_Cart_get, MPI_Cart_coords, MPI_Cartdim_get,
1097 MPI_Dims_create, MPI_Cart_sub are supported.
1098 * New interface to use SMPI programmatically (still depends on MSG for
1099 some parts, see examples/smpi/smpi_msg_masterslave):
1100 - SMPI_app_instance_register(const char *name, xbt_main_func_t code,
1104 * Global variables privatization in MPI executables is now performed at runtime
1105 with the option smpi/privatize_global_variables (default:no).
1106 Limitations: Linux/BSD only, with mmap enabled. Global variables inside
1107 dynamic libraries loaded by the application are not privatized (static
1108 linking with these libraries is advised in this case)
1111 * Options defined in XML work correctly now.
1114 * New cmake option, enable_lib_in_jar, to control whether native libraries are
1115 copied into simgrid.jar or not (ON by default). Use this option if you want
1116 to reduce the size of the installed simgrid.jar, *and* the native libraries
1117 are kept installed elsewhere.
1118 * Surf binding with SWIG (code generated in maintainer mode only):
1119 - plugin to handle callbacks
1120 - CPU model only for the moment
1123 * Supernovae build mode is definitively removed. It was used to improve
1124 inlining and inter-module optimizations. It is nowadays superseded by
1125 link-time optimizations commonly available in compilers.
1126 * Update ns-3 find lib. Bindings for ns-3 should work again now.
1127 * Add boost dependency for surf++
1128 * Add new macro for tests
1129 - ADD_TESH(name <tesh_args>)
1130 - ADD_TESH_FACTORIES(name "thread;ucontext;raw" <tesh_args>)
1134 - xbt_bar_t XBT_barrier_init(unsigned int count)
1135 - int XBT_barrier_wait(xbt_bar_t barrier)
1136 - void XBT_barrier_destroy(xbt_bar_t barrier)
1137 * Make the xbt_os_time module public
1139 -- Sat May 31 22:39:38 CEST 2014 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1141 SimGrid (3.10) stable; urgency=low
1143 The Clean Diaper Release, a.k.a. SimGrid is leak-free.
1146 * Reintegrate Java to the main archive as desynchronizing these
1147 package is not acceptable anymore (Java is now considered stable)
1148 * Add explicit synchronization facilities through semaphores
1149 * Bug fix: Task.setDataSize() only changed the C world, not the value
1150 cached in the Java world
1153 * Dramatically change the way files are handled. API and internals changed, but
1154 this part of MSG was not considered as production grade either.
1155 * Add explicit synchronization facilities through semaphores
1156 * Add a new function MSG_host_get_process_list()
1157 * Preliminary DVFS support (see examples/msg/energy/ for details)
1160 * SMPI is now included directly in the libsimgrid as the windows
1161 linker doesn't force us on splitting it anymore.
1162 * Improvements of the SMPI replay tool:
1163 - Most of the collective communications are now rooted in the same process as
1164 in the original application.
1165 - Traces now rely on the same MPI data type as the application (MPI_BYTE was
1166 used until now). Multiple data types can now be used in a trace.
1167 - The replay tool now supports traces produce either by TAU or a modified
1169 - Bug Fix: the compute part of the reduce action is now taken into account.
1170 - Gatherv collective is now supported
1171 - SimGrid (SMPI for now) can generate replay traces as well. Option -trace-ti
1172 of smpirun outputs time independent traces for the current run. One file
1173 is created per process. If too many processes are simulated, this behavior
1174 can be changed to one file for all processes by using the
1175 tracing/smpi/format/ti_one_file flag
1176 * smpirun generates the host file if needed (with given host count and platform)
1177 * Integration of more than 100 STAR-MPI, MPICH, OpenMPI collective algorithms
1178 - allows to select one in particular with --cfg=smpi/coll_name:algorithm
1179 - allows to use the decision logic of OpenMPI(1.7) or MPICH(3.0.4) by setting
1180 --cfg=smpi/coll_selector:(mpich/ompi)
1181 * Support for new functions: MPI_Issend, MPI_Ssend, Commutative operations in
1183 * Add a --cfg:tracing/smpi/internals option, to trace internal communications
1184 happening inside a collective SMPI call.
1185 * Fix the behavior of complex data types handling.
1186 * Make MPI_Wtime another synchronization point to take computations into
1188 * Replace MPICH-1 test suite by the one from MPICH 3.0.4. Can be built using
1189 enable_smpi_MPICH3_testsuite flag in cmake. Run with ctest.
1190 * Add all missing Fortran bindings, SMPI should work with Fortran 90
1191 (no privatization of global variables yet)
1192 * Preliminary DVFS support (see examples/smpi/energy/ for details)
1195 * Verification of liveness properties is now available for SMPI applications
1196 (in addition to MSG applications)
1197 * Bugged examples using SMPI in examples/smpi/mc/
1198 * Add --cfg=model-check/visited option. Allows the verification of infinite
1199 programs. Detection of loops in the execution thanks to the system state
1200 comparison and reduction of the state space to explore. Can be combined with
1201 DPOR for safety properties.
1204 * Allow to change SimGrid configuration (see --help) within the code
1205 thanks to SD_config() as it can be done in MSG.
1206 * Add a new function SD_task_set_amount() upon user request.
1209 * Handle units for values (10ms, 10kiloflops, 10Bps, 1GB, ...)
1210 * Remove rule based routing (no more PCRE dependency)
1211 * Add a limiter_link option to cluster tag, to specify a maximum reachable
1212 bandwidth in fullduplex mode when it is less than twice the nominal bandwidth.
1213 * Add a loopback_bw and loopback_lat options to cluster tag.
1214 * Fix the peer tag that could not be mixed with other AS within a Vivaldi
1215 routing. Now peers are encapsulated in an AS and have their own private
1216 router but this is transparent.
1219 * Our own implementation of getline is renamed xbt_getline, and gets
1220 used even if the OS provide a getline(). This should reduce the
1221 configuration complexity by using the same code on all platforms.
1222 * New type: xbt_cfg_elm_boolean.
1223 * Allow to use yes/no for boolean configuration options in the command line.
1224 * Allow to disable SimGrid cleanups at exit from command line option.
1225 There are situations where one may want a simulation to end with an exit.
1226 Unfortunately, calling exit may cause SimGrid to segfault, which is quite
1227 annoying when scripting around the simulator. Adding a
1228 --cfg=clean_atexit:no allows to circumvent this issue.
1231 * Lots of memory leaks were corrected in this release.
1232 There is no known memory leaks anymore, in all of our 600+ tests.
1233 * New command line option --version, to get SimGrid version information.
1234 Packagers may want to add extra words to SIMGRID_VERSION_EXTRA defined in
1236 * Supernovae builds are deprecated, and expected to be removed in the next
1239 -- Sun Nov 17 00:26:44 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1241 SimGrid (3.9) stable; urgency=low
1243 The Grasgory release: GRAS is really dead now.
1245 * Complete overhaul of the internal host structures scheme.
1248 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
1249 was considered as experimental and badly maintained since then.
1250 * Keeping it was thus a trap to our potential users, that could take
1251 it instead of MSG or SMPI by mistake despite is pity state.
1252 * GRAS seems to have very few users (if any), and no one volunteered
1253 to maintain it further. It also induces a lot of XBT code (for
1254 portability sake), that must be maintained too.
1255 * For all these reasons, we killed GRAS. If someone wants to revive it
1256 in the future, don't cry, our git history still remembers of GRAS.
1259 * Major overhaul. Merge our documentation again as time proved that
1260 splitting it was really not helping our users.
1261 * Further improve the developer documentation to help newcomers
1262 hacking on SimGrid itself. The user documentation (and in
1263 particular, the beginner documentation) is still in a sorry state.
1266 * Now works on Windows too!
1267 * Much more extensive test suite, from MPICH
1270 * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
1271 (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
1272 dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
1273 * Bug fix: let task be scheduled when the last dependency to be solved is
1274 a control dependency.
1275 * Remove SD_load_environment_script function.
1276 Use the C sg_platf function if you want to declare a platform
1280 * New function: MSG_process_get_number()
1281 * Old function documented: MSG_config()
1282 * Remove MSG_load_platform_script function
1283 Use the C sg_platf function if you want to declare a platform
1287 * Change the default value of the TCP_gamma constant (maximal size of TCP
1288 congestion window) to a more realistic 4MiB value. If you notice changes in
1289 your simulation results, you can fall back to the previous 20k tiny window
1290 by adding --cfg=network/TCP_gamma:20000 on command line.
1291 * (Hopefully) fix a bug wrt periodic availability and state traces
1292 * Bug fix: use default values at start when first event in availability/state
1293 trace is not at time 0.
1296 * remove the "new_" part of function name sg_platf_new_trace_connect
1297 (resulting in sg_platf_trace_connect), since it does not create
1301 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
1302 use case where it's really mandatory, and maintaining it was a pain in
1304 * New: xbt_fifo_search(), search an item with a user-provided
1305 comparison function instead of dumb pointer comparison.
1308 * Fix the lua deployment:
1309 Use `simgrid.init_application()` before deployment instead of
1310 `simgrid.msg_register_application()` after.
1313 * Transfer the tracing files into the corresponding modules.
1315 -- Tue Feb 5 11:31:43 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1317 SimGrid (3.8.1) stable; urgency=low
1319 The "we are told that some people want to also *install* the simgrid
1322 * Add missing file "tesh.1" to the archive.
1324 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1326 SimGrid (3.8) stable; urgency=low
1328 The Psssshiiiit release: SimGrid jumps into the Cloud.
1331 * Add an experimental interface to manipulate VMs. They are mainly
1332 process groups with very few intrinsic semantic, but they should
1333 allow you to build the semantic you want easily.
1334 * New function: MSG_host_set_property_value()
1335 * New function: MSG_process_on_exit(). To clean memory in all cases.
1336 * Bug fixes that made the host (and link) failures unusable.
1337 * Add a way to auto-restart process when the host in which they are
1338 executing comes back (ON_FAILURE="RESTART" on deployment file,
1339 MSG_process_auto_restart_set).
1340 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
1341 please stop using the old ones, they are DEPRECATED.
1343 * Deprecate functions MSG_global_init() / MSG_global_init_args()
1344 Please use MSG_init() instead. (reducing the amount of entry
1345 points in the library helps us).
1346 * Make it impossible to link against the wrong version of the lib
1347 * Deprecate MSG_clean(). No need to call it anymore.
1348 * Function MSG_get_host_number() is not deprecated anymore.
1351 * Split the doc into a user guide and a reference guide.
1352 * Start a developper guide to help people hacking on SimGrid.
1355 * Enable tracing by default. This modules rocks you should use it.
1356 * Remove option custom_flags. Now use environment variables CFLAGS
1358 * Use default cmake things to detect lua instead of home grown ones.
1359 * New option "enable_mallocators" to disable mallocators, for debugging
1360 purpose ("on" by default).
1363 * Bug fixes around the resource failures: don't let the processes
1364 survive the host they are running onto.
1365 * Add an interface to auto-restart processes when the host in which they are
1366 executing comes back.
1367 * Ensures that SIMIX_clean is called automatically. It's not part of
1368 the public interface anymore (bindings should be updated).
1371 * Bug fix for when SD_Simulate is called with a positive value: be careful
1372 when comparing doubles. Sometimes they are different for non significant
1374 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
1375 parallel task whose initial work is distributed among host according
1376 to the Amdahl's law. Such tasks are created with a parameter alpha
1377 that corresponds to the non-parallelizable part of the computation.
1378 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
1379 between two sets of workstations assuming a 1D block distribution (each
1380 workstation owns a similar share of data) on both sides.
1382 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
1383 Data redistribution will be automatically scheduled once parent and child
1384 are both scheduled. The filling of computation_amount and
1385 communication_amount structures is now done seamlessly thanks to the chosen
1387 * New function SD_workstation_dump to display various information
1388 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
1389 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
1390 bandwidth on the route onto which the task is scheduled and the amount of
1392 To divide the nominal bandwidth by 2, the rate then has to be:
1393 rate = bandwidth/(2*amount)
1394 * Compute tasks that have failed can now be rescheduled and executed again
1395 (from their beginning)
1396 * Increasing source code coverage (src/simdag is now covered at 95.8%
1400 * Re-implement time-independent trace replay using SMPI (at the
1401 smpi_smp_* level) instead of MSG. This should replace
1402 examples/msg/actions/actions.c
1403 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
1404 hindexed and structs)
1405 * Implement the exchange of non-contiguous data.
1406 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
1407 * Correct behavior of smpi/sender_gap and set its default value to 0
1408 * Add option to asynchronously send small messages to allow better
1409 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
1410 specifies the size in bytes under which messages will be asynchronously sent.
1411 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
1412 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
1415 * New C interface to define a platform: XML is now optional.
1416 For more info, please check include/simgrid/platf.h.
1417 * New interface to define random platforms from the C:
1418 For more info, please check include/simgrid/platf_generator.h and
1419 examples/msg/masterslave/masterslave_platfgen.c
1420 * Export a sg_cmdline dynar containing all the arguments we got from
1424 * Two new tracing options for adding comments to trace file so you
1425 can track your experiments (see --help-tracing for details).
1426 * New option to generate a impoverished trace file (--cfg=tracing/basic:1)
1427 * Adding the SimGrid version that generated the trace file as a comment.
1428 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
1429 * Fix to avoid key clashes on Paje links
1430 * Other minor fixes related to the Paje specification
1433 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
1434 and renamed to xbt_str_hash() and xbt_str_hash_ext().
1435 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
1436 * Greatly improve the robustness of mmalloc to user errors (such as
1437 using an area after freeing it, or freeing it twice)
1439 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1441 SimGrid-java (3.8.1) stable; urgency=low
1443 * New module: org.simgrid.trace.Trace (SimGrid trace bindings)
1444 Warning: all methods are visible, but only some of them are
1445 implemented so far. Check the source (src/jtrace.c)
1446 for further information.
1447 * New module: org.simgrid.msg.File (SimGrid File management functions)
1448 * New Module: org.simgrid.msg.VM (SimGrid interface to mimick IAAS clouds)
1449 * Change the meaning of Process.restart: now restart the process from
1450 the begining, like MSG_process_restart in C.
1451 * Add Process.setAutoRestart: handling of process restart when failed
1453 * Add Process.getProperty, Host.getProperty, Host.getProperty: allows
1454 you to retrieve the properties of the processes/hosts
1455 * Deprecate Msg.clean(): you can just forget about it now.
1456 * New function Process.getCount(), that only works when compiling
1457 with the not yet released version 3.9 of the C library.
1459 * New context factory based on Coroutines. It mandates a modified JVM
1460 but then, the simulations run about five times faster, and there is
1461 no limit to the amount of processes (beside of the available memory).
1463 -- 2012-12-04 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1465 SimGrid (3.7.1) stable; urgency=low
1468 * Restore the prototype of MSG_process_create_with_environment() to
1469 the pre-3.7 situation by removing the kill_time argument.
1470 * Add a MSG_process_set_kill_time() function instead.
1473 * Fix weird behaviors when dealing with parallel tasks.
1476 * Simgrid is now built as a dll.
1477 * Simgrid-java now works on Windows.
1478 * Simgrid-Java is now included into Windows package.
1481 * First pre-build package for MacOSX.
1484 * Fix compilation when using MSG_USE_DEPRECATED.
1485 * Fix some compilation issues on Macs and Windows.
1486 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
1487 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
1489 We discovered that the Lua console is broken, but we are missing the
1490 manpower to fix it right now. The problem existed in 3.7 too, so we
1491 are not blocking the release for that. Sorry if you depended on this
1492 feature, any help would be really welcome.
1494 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1497 SimGrid-java (3.7.1) stable; urgency=low
1499 The "Java aint got to be bloated and slow" release
1502 * Various internal cleanups and performance improvement
1503 Simulations are expected to run up to twice faster or so
1504 * Make Process.kill(process) an instance method, not a static one
1505 * User processes are not java.lang.Thread subclasses.
1506 This breaks the compatibility (sorry), but previous API was
1507 brain-dead, making it impossible to have non-trivial
1508 initializations in the process constructor.
1509 * Require a full constructor per Process sub-class.
1510 Kinda breaks the compatibility (sorry), but this allows a much more
1511 efficient way to launch the processes at simulation startup.
1512 * Do not embeed our version of semaphores, java 1.5 can be considered
1513 as sufficiently prevalent for us to not dupplicate its features.
1517 * Add examples for almost every part of the API
1518 We spotted and fixed a lot of bugs in the process
1520 * New module: asynchronous communication API
1521 * New function: Process.sleep()
1522 It takes milliseconds as argument, just as java.lang.Thread.sleep()
1523 * New module: org.simgrid.msg.Mutex (SimGrid mutexes)
1524 * New module: org.simgrid.msg.RngStream (RngStreams random generators)
1526 -- 2012-06-12 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1528 SimGrid (3.7) stable; urgency=low
1530 The "spring cleanups (before the next Big Project kicks in)" release.
1533 * We can specify the SMPI latency/bandwidth factor with command line
1534 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
1535 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
1536 You can also use the "config tag" from platform file by adding this line
1537 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
1538 (see "example/platforms/tag_config.xml" to use "config tag").
1539 Note that the command line supersedes the platform file configuration.
1540 * Change the correction factors used in LMM model, according to
1541 the latest experiments described in INRIA RR-7821.
1542 Accuracy should be improved this way.
1543 * Use the partial invalidation optimization by default for the
1544 network too. Should produce the exact same results, only faster.
1545 * Major cleanup in surf to merge models and split some optimization
1546 mechanisms from the core of the models. As a result you can now
1547 specify which model to use (e.g., --cfg=network/model:LV08
1548 --cfg=cpu/model:Cas01) and which optimization mode to use
1549 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
1550 Incompatible combinations should err at initialization. See
1551 --help-models for the list of all models and optimization modes.
1552 * The CLM03 workstation model was dropped for simplicity because it
1553 used the deprecated CM02 network model. Use default instead.
1554 * Rename the TCP_gamma configuration option to network/TCP_gamma
1555 * Rename the coordinates configuration option to
1556 network/coordinates, and document it
1557 * Use now crosstraffic keyword instead of the terribly misleading
1558 fullduplex keyword. It is activated by default now in the current
1559 default model, use --cfg=network/crosstraffic:0 to turn it off.
1560 * Ongoing refactoring the model parsing to make XML files optional
1561 See include/simgrid/platf.h for details (still to be completed)
1564 * Major overhaul of the documentation. Almost instructive now :/
1565 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
1566 functions and friends. This interface was considered as
1567 deprecated since over 2 years, it's time to inform our users that it is.
1568 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
1569 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
1570 use these (crappy) functions in your code.
1571 These functions will be removed soon. Stop using them now.
1572 * Deprecate MSG_get_host_{table,number}
1573 Implement MSG_hosts_as_dynar() instead.
1574 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
1575 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
1578 * Stabilize the parallel execution mode of user contexts
1579 * Introduce configuration variables to control parallel execution:
1580 - contexts/synchro: Synchronization mode to use when running
1581 contexts in parallel (either futex, posix or busy_wait)
1582 - contexts/parallel_threshold: Minimal number of user contexts
1583 that must be part of a scheduling round to switch to parallel
1584 execution mode (raw contexts only)
1585 * Fix bugs that prevented to use suspend/resume along with
1586 synchronization structures.
1587 * Fix bugs in process termination that lead to invalid memory access
1588 in very specific conditions.
1591 * Introduce a parallel mode for the models (controlled by surf/nthreads
1592 configuration item). In our tests, running the models in parallel
1593 never lead to any speedups because they are so fast that the gain
1594 of computing each model in parallel does not amortizes the
1595 synchronization costs, even when ultra fast futexes are used.
1596 This is released anyway because YMMV.
1599 * Performance boost by using a swag internally to compute the set of
1600 tasks that are finished and should constitute the return value of
1604 * Enable it by default now that it is considered rather stable.
1607 * Documentation of the tracing functions.
1608 * Performance gains when tracing categorized/uncategorized resource
1609 utilization by avoiding calls to get route when updating resource
1610 variables. LMM constraints are being used instead.
1611 * API changed to set task categories. Use MSG_task_set_category instead
1612 of TRACE_msg_set_task_category, and SD_task_set_category instead
1613 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
1614 * Bugfix for graphicator, routes not correctly obtained, memory leaks
1615 * Examples for link user variables added (see at examples/msg/tracing/)
1616 * Deprecated function TRACE_msg_set_process_category completely removed
1617 * Trace header updated according to the latest Paje file format
1618 * Tracing network lazy updates, no longer obligate users to use full updates
1619 * --cfg=tracing/platform:1 also registers power/bandwidth variables
1620 * Experimental: let user code declare/set/push/pop application states for hosts
1621 * API changed to allow the manual creation of graph configuration files
1622 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
1625 * Improve the API of Lua MSG bindings, using the Lua spirit.
1626 * Each simulated process now lives in its own Lua world (globals are
1627 automatically duplicated). It helps writing simulators. Will allow
1628 to run Splay programs within SimGrid in the future.
1629 * Add a Chord example in Lua, equivalent to the MSG one.
1632 * Start the implementation of a solution to express temporal
1633 properties, not only local assertions. This is still an
1634 experimental work in progress, stay clear from it to be safe.
1638 - Add new runtime parameters --help-logs and --help-log-categories
1639 to display information about supported logging parameters and
1641 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
1642 don't exists anymore.
1643 * Mallocators: allow value NULL for the reset function.
1645 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
1646 create homogeneous dictionaries, where all the elements share the
1647 same free function. Non homogeneous dictionaries will be
1648 deprecated in the next release.
1649 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
1650 - Multi-level dictionaries are deprecated.
1652 - new function xbt_dynar_search_or_negative() that is useful when
1653 you have less than 2 million elements in your dynar and don't
1654 want of the extra complexity of catching exceptions when the
1655 element is not found.
1657 - Make xbt_os_thread module (for thread portability) public.
1658 Documentation is still to come, sorry.
1660 - Cleanups and simplifications to make it maintainable again.
1661 - Exotic features (such as memalign and valloc) were removed.
1662 - The metadata were extended and improved so that the
1663 model-checker becomes able to explore and inspect the heaps.
1664 - This may induce a performance drop when enable_model-checking is
1665 ON in cmake (even if it's not used in the simulation), but it is
1666 necessary at this point to get MC working.
1668 Turn model-checking OFF if simulation performance matters to you.
1669 Not enabling it at runtime is not enough, disable it in cmake.
1671 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1674 SimGrid (3.6.2) stable; urgency=low
1676 The "Not coding new stuff allows to polish old things" release.
1679 * New bindings to the NS3 packet level simulator (experimental)
1680 * Use the raw (efficient) execution contexts instead of the sysv
1681 (portable) ones when possible.
1682 * libpcre is now mandatory in any cases since not using it led to
1683 severe performance loss and possibly other issues
1684 * Update the XML platforms:
1685 - G5K: include the latest machine in Nancy
1686 - GridPP and LCG: new platforms
1687 * Documentation was partially updated, at least (more to come)
1689 Bug fixes, cosmetics and small improvements
1690 * Free terminated processes before the end of the simulation to avoid
1691 exhausting the memory of users having very dynamic amount of
1693 * Bug fix and cosmetics about canceling non-running tasks
1694 * Bug fix about the dot loader's issues when using libcgraph
1697 * Create an installer for windows with nsis (amd64 and win32)
1698 - Add an hello world project to illustrate simgrid project creation.
1699 - Embed libpcre into the Simgrid installer to avoid
1700 its compilation burden
1701 * The raw execution contexts should work on Apple now
1702 * Port to Windows 64 bits
1703 - Sysv contexts now have an implementation for this arch
1704 - GRAS communication features now support this arch
1705 * Drop support for borland compiler on windows
1706 - this code was not maintained, and we kinda depend on gcc nowadays
1707 * Fix portability issues on kfreebsd/gnu: build error about semaphores
1708 * Fix portability issue on unstable ubuntu: linker became picky on
1711 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1713 SimGrid (3.6.1) stable; urgency=low
1715 The "Oops, we broke Macs too" release
1718 * Fixed contexts detection so that raw ones are used when possible
1719 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
1720 leads to a strange error, with user code segfaulting sometimes when
1721 the generated code is not perfectly aligned (which is not
1722 controllable from the user side, depends on the amount of code)
1725 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
1727 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1729 SimGrid-java (3.6) unstable; urgency=low
1732 * Split of every thing from simgrid v3.5 into a separate package.
1734 -- 2011-10-05 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1736 SimGrid (3.6) stable; urgency=medium
1738 The Summer Release, also known as the "OMG! They Killed Kenny!" version
1741 * Bindings now constitute their own package, separated from the main one.
1742 Rationale: reduce our maintenance nightmare by reducing the module coupling
1743 They will soon be released on their own on gforge.
1745 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
1746 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
1748 GRAS: It is not considered as stable anymore, but experimental. Sorry.
1749 * It's not quite deprecated for now because we have no replacement,
1750 but it may soon become the case.
1753 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
1754 * Fortran: New user-level cache variable to store the rank of the running
1755 process. This improves performance by an order of magnitude.
1756 * C: New coccinelle script to automatically locate and modify global and
1757 local static variables.
1758 * Improved SMPI network model with a sender-side gap to account for multiple
1762 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
1763 only say if a communication is finished, no matter whether it succeeded or
1764 failed. You can call MSG_comm_get_status() to know the status of a finished
1766 * New function MSG_task_dsend() to send a task and detach it. When a
1767 communication is detached, you are never notified of its success or failure
1768 and the memory is released automatically once it is finished. This function
1769 is useful when you don't care about the end nor the success of a
1771 * Change the prototypes of action replay. Sorry for inconvenience,
1772 but this is really more efficient this way (and to adapt your code,
1773 you just have to fix the initialization, that shouldn't be too long)
1774 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
1775 ever managed to do anything useful with it.
1776 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
1777 takes a dynar of communications. It returns immediately and gives the
1778 index of a finished communication (if any).
1779 * New example: a basic implementation of the Chord P2P algorithm.
1782 * New model for multi-core CPUs. You can now use the core attribute to
1783 precise the number of cores of a host. This is a basic model. Every
1784 process running on the host receives at most the power provided in
1785 the DTD (throughput<=power). Total throughput of process cannot exceed
1787 * New peer tag. This peer tag creates a tiny AS comprising a host and a
1788 router linked by an up-link and a down-link (possibly asymmetrical).
1789 This kind of pattern allows to easily build last-mile model style platforms.
1790 Aggregating such patterns in a rule-based AS is thus the technique of
1791 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
1792 * New model for Vivaldi routing. We transformed the Vivaldi network model
1793 into a Vivaldi routing model (based on the rule-based model). This allows to
1794 combine Vivaldi based latencies with last-mile platforms.
1797 * Added a check for NaN of IEEE754 infinite in the double entries of
1799 * Introduce a new context factory "raw", highly inspirated from the
1800 ucontext factory, but using manually crafted functions in assembly to
1801 do the work in an efficient manner.
1802 * Allow to change the used context factory at run time, not only at
1803 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
1804 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
1805 contexts at runtime (only with raw contexts or ucontexts).
1806 * Completely rewrote this module to allow parallel execution of user
1807 processes. Use --cfg=contexts/nthreads:N to execute user processes
1808 with N parallel threads (the default is 1, meaning no parallelism).
1809 * Allow to decide dynamically between sequential and parallel modes.
1810 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
1811 processes in parallel only when their number is greater than or equal to P
1813 * Added a check for NaN of IEEE754 infinite in the double entries of
1817 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
1818 won't output the state of processes when interrupted with Ctrl-C
1819 * Add a new function xbt_dynar_to_array that transforms a dynar into a
1820 NULL-terminated array. This may solve backward compatibility issues
1821 due to the change to return type of SD_simulate. See also:
1822 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
1823 * Add new macros with variable number of arguments.
1824 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
1825 - in xbt/asserts.h: xbt_assert
1826 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
1827 - in xbt/ex.h: THROWF and RETHROWF.
1828 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
1830 * Change xbt_die() to accept a format string with arguments, just like printf.
1831 * New data structure: xbt_lib_t, like a dict but more general and with better
1835 * New configuration options
1836 Options triva/categorized and triva/uncategorized can be used to generate
1837 graph configuration files for Triva visualization tool.
1838 * Configuration option tracing/platform is renamed to tracing/categorized
1839 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
1840 * New TRACE_user_link_variable interface:
1841 User provides the name of the link and the tracing variable to attach to it
1842 * the declaration of tracing categories must be done after the environment
1844 * simpler tracing interface, just one way to declare categories
1845 TRACE_category or TRACE_category_with_color, it is up to you
1846 * links in the trace file are again identified by their names
1847 * trace contains the full platform hierarchy exactly as declared using the ASes
1848 * Options tracing/msg/[task|process]:1 groups the process by hosts
1849 for both cases, tasks and processes must have names that are unique during the simulation
1850 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
1851 * The experimental option tracing/msg/volume is deprecated
1852 its functionality may be reincorporated if needed
1854 The tracing generates a trace file with unordered timestamped events,
1855 because of the way the core simulator (surf) works. A script available
1856 at the tools directory (fix-paje-trace.sh) can be used to put the events
1857 in order. We have changed the tracing so it can generate ordered timestamped
1858 events in the final trace, but depending on the simulator (and how much time
1859 is simulated) that can lead to a huge memory utilization. It is deactivated
1860 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
1862 Build Infrastructure
1863 * Define a SIMGRID_VERSION macro in simgrid_config.h.
1864 - We are trying hard to keep the API stable, but it may happen that
1865 some things change (we're a research project after all, not a
1866 nuclear plant operating system). If such things should happen, you
1867 could rely on that macro to adapt.
1868 - current value: 30600 for 3.06.00, aka 3.6
1869 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
1870 a number that can be compared with SIMGRID_VERSION.
1871 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
1872 assertions and verbose/debug logging events are disabled at compile time.
1874 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1876 SimGrid (3.5) stable; urgency=medium
1879 * New feature to any SimGrid-based simulator: Model-Checking
1880 Check SIN#1 for more details.
1883 * New Model SMPI (three-interval linear regression for correction factors)
1884 See RR-7426, available at http://hal.inria.fr/inria-00527150
1885 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
1886 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
1887 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
1888 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
1889 * See also src/smpi/README
1894 - Tracing API changes: TRACE_start and TRACE_end should not be called
1895 by user-code. They are automatically called by simulators created
1896 with SimDAG, MSG and SMPI if the toolkit is compiled with
1897 tracing_enabled=ON. Categories declaration and utilization remain the
1898 same for MSG and SimDag.
1899 - A function was added to the tracing API to declare categories with
1901 - TRACE_category_with_color (char *category, char *color)
1902 where color must be in the following format
1903 "%f %f %f", red, green, blue
1904 and red, green, blue are float values in the interval [0, 1]
1905 - User can specify NULL as color parameter, or continue calling
1906 TRACE_category (cat)
1907 On that case, the tracing system will define random colors
1908 - The following command-line options are supported:
1909 --cfg=tracing/filename:msg.trace
1910 --cfg=tracing:1 (activate tracing, needed to use others)
1911 --cfg=tracing/platform:1 (categorized resource use)
1912 --cfg=tracing/uncategorized:1 (uncategorized resource use)
1913 --cfg=tracing/msg/task:1 (task creation)
1914 --cfg=tracing/msg/process:1 (process creation, migration)
1915 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
1916 --cfg=tracing/smpi:1 (SMPI interface tracing)
1917 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
1918 - examples of examples/msg/tracing updated
1920 - DAXLoader and DOTLoader functions can generate tasks with categories
1921 - A new function to attribute a category to SD tasks:
1922 TRACE_sd_set_task_category (SD_task_t task, char *category)
1923 * Tracing the MPI interface implemented by SMPI
1924 - Collective operations are traced with states
1925 - Point-to-Point operations are traced with states/links
1926 - Tracing activated by a parameter "-trace filename" passed
1927 to smpirun during execution (considering that simgrid
1928 is compiled with tracing enabled)
1929 - To run the simulation with gdb, the simulator
1930 accepts --cfg=tracing/smpi:1 to trace SMPI
1931 - tesh files to check if smpi tracing is ok
1932 - See examples/smpi/NAS/DT-trace
1933 * GTNetS tracing re-worked
1934 - adaptation to the tracing system of GTNets to cope
1935 with modifications regarding the fullduplex mode
1936 - new tesh files to check if gtnets tracing is ok
1939 * Asynchronous communications through the functions:
1940 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
1941 * New function: MSG_load_platform_script()
1942 to make possible using a lua script instead of XML files to set up platforms
1943 * New function: MSG_set_function
1944 to associate functions to processes, used when bypassing the parser
1945 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
1947 Platforms: Add some more examples in examples/platforms
1948 * Grid'5000: see www.grid5000.fr
1949 * *_30000_hosts.xml: various huge files [mainly scalability testing]
1952 * Change the XML format. This is a very important modification. SimGrid
1953 3.5 introduces a new hierarchical format based on the notion of
1954 Autonomous Systems. Compatibility with old format is ensured
1955 through the perl script provided in the install bin directory
1956 bin/simgrid_update_xml.
1957 It is now possible to build platforms with specific routing
1958 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
1959 connect several platforms together. We will try to provide soon
1960 set of realistic platforms exploiting these properties (have a
1961 look at examples/platforms/ for the moment).
1962 * Take the opportunity of the XML format change to be a good XML citizen:
1963 rename link:ctn to link_ctn and similar changes (also dealt with by
1965 * Add a new routing scheme (rule-based) using regular expressions. It
1966 enables to have an extremely low memory footprint when the
1967 underlying routing is simple and can be compactly described. You
1968 need to have libpcre4-dev (perl regular expressions) installed if
1969 you want to use this routing scheme.
1970 * Revive the cluster TAG and allow to easily and efficiently (both in
1971 term of memory and speed) connect clusters together. Have a look
1972 at teshsuite/simdag/platforms/ to see how this can be done. With
1973 this tag, you can create clusters with thousands of tasks at no
1974 cost (have a look at examples/platforms/).
1975 Note: clusters are implemented as ASes, so there is no need for an
1976 enclosing AS tag if you have only one cluster in your platform.
1977 * Add new generic functions in the public interface that allows the user
1978 to call SURF 'create_resource' methods from your code (same
1979 functionality as the XML bypass mechanism but with a much lighter
1981 * Add a new model (enabled through command line --cfg=network/model:SMPI)
1982 that uses a piecewise linear approximation to produce better
1983 results when exchanging small messages.
1984 * Add a new parameter to handle correctly full duplex link and account
1985 for interferences between uplink and downlink communications
1986 (activate with --cfg=fullduplex:1).
1989 * Rename the SD_READY (all dependencies are satisfied and task is
1990 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
1991 dependencies are satisfied) state.
1992 This prevents a confusion between the notion of "ready to schedule"
1993 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
1994 simulated" (SD_RUNNABLE) used by the simulation kernel.
1995 * Change the way a task is considered as ready. Instead of removing
1996 dependencies when a task is done, a counter is decreased. This way,
1997 it is always possible to reach ancestors thanks to the
1998 SD_taks_get_parents function (even after the end of the simulation.)
1999 * Change the return type of SD_Simulate from (SD_task_t*) into
2000 xbt_dynar_t. This function was in handling a dynar internally and
2001 converted it into a NULL terminated array for historical reasons.
2002 * New function SD_dotload(char*) to load a DAG described in dot
2003 format. This loader and the corresponding examples require the
2004 installation of the graphviz library.
2005 * Fix a bug in the management of tasks of size 0 in the surf network
2006 models. This problem was only visible with SIMDAG and you should
2007 thus disregard results produced with earlier versions if you
2008 relied on this feature (some tasks were blocked because of this).
2009 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
2010 even though your applications were doing only point-to-point
2011 communications and sequential computations. Now you can really use any
2012 model you want (of course, if you create real parallel tasks, which are
2013 not implemented in most models beside ptaskL07, this will abort).
2014 * Add an example that schedules a DAX on an heterogeneous platform
2015 using a Min-Min strategy.
2016 * New function SD_workstation_get_current_task() that returns the kind
2017 of task currently running on a workstation in the sequential access
2019 * Raise some warnings when unexecuted tasks remains at the end of the
2020 simulation. This is usually caused by cycles in the DAG.
2023 * New function: SIMIX_process_set_function() called by MSG_set_function
2024 * Change the underlying waiting queue in semaphores so that a process
2025 can wait on several of them simultaneously (as in waitany).
2026 * Fix the way to handle tokens in semaphores so that all access patterns
2027 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
2028 * kill the dirty pimple SIMIX_message_sizes_output()
2029 Please use (proper) visualization instead
2032 * New data container: setset (set of sets of elements)
2033 * New module: mmalloc (mapped malloc, allowing to have several
2034 independent segments of malloc)
2035 * New function: xbt_dict_cursor_set_data()
2036 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
2037 * New function: xbt_dynar_is_empty()
2038 * New function: xbt_fifo_get_last_item()
2039 * Fix xbt_dynar_shrink(): use the right element size.
2040 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
2041 uninitialized areas during expand.
2042 * Fix semaphores: previous implementation was severely broken.
2043 * Use library init/fini functions for our initialization.
2044 - you can use logs and other feature as soon as you want in your
2045 code (even before the xbt_init / MSG_init)
2046 - xbt_exit is now a no-op and produce a warning when used.
2049 * Port GRAS to new SIMIX mechanisms. This allows gras users to
2050 benefit from the latest improvement to the simulation kernel.
2051 * Kill measurement sockets for now. If you rely on them, sorry. This
2052 release is not for you. This feature will be reintroduced in the
2053 future, but we cannot delay the release any further.
2054 * New function: gras_msgtype_get_name().
2055 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
2056 * Fix (at last) the pmm example: it should not randomly fail anymore.
2058 Build chain: bug fixes and overall polishing
2059 * Cmake is now stable enough. Hence, we killed the autotools.
2060 * Port to windows ( TM :)
2061 * Fix the 'make install' target.
2062 No need to use 'make install-simgrid' anymore
2063 * Introduce a 'make dist' target compiling a *source* archive
2064 'make package' compiles a binary archive
2065 * Compile java files only on need
2066 * Add --cd and --setenv command line options to tesh
2067 * Out of source builds are not fully supported yet, but we are close
2068 * Enable supernovae and optimization flags by default for our users
2071 * Add layer to set up environment directly from lua, without XML.
2072 * The effect of gras_stub_generator can be achieved through
2073 lua too (check examples/gras/console/ping_generator.lua)
2075 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2077 SimGrid (3.4.1) stable; urgency=low
2079 The "Polishing easter eggs is probably a good idea" release.
2080 This is a bug fixes release only.
2084 * Fix a bug preventing the tasks from begin garbage collected.
2087 * Fix a bug occuring when a host involved in a communication fails.
2088 This was not detected properly by the other peer involved in the
2089 communication. Now, it's reported as a network error.
2092 * Warn the user about loop dependencies in data flow of DAX files
2093 * Obey the control-flow dependencies of DAX files
2096 * Add option "enable_smpi" allowing to not compile SMPI.
2097 Probably useful for the (Mac) users experiencing a build error here
2098 * Improve the detection of lua5.1 and ruby1.8
2100 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
2102 SimGrid (3.4) stable; urgency=low
2104 The "Easter in Cargese" release. Also known as (major changes):
2106 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
2107 ~> bindings were greatly improved
2108 ~> new tracing infrastructure for better visualization introduced
2110 * the "Welcome to configury modernity" release.
2111 ~> we switched from autotools to cmake, and improved our cdash
2114 A more detailled list of changes follow (full detail in svn log).
2116 Java Bindings: Various Cleanups
2117 * (install java-gcj-compat-dev on debian-like to use them)
2118 * Remove put/get: no need to export deprecated interface in Java
2119 Use send/receive instead.
2120 * Cleanup the examples and add a README per directory
2121 * Remove example autoDestination (that's the only way to go now)
2122 * Remove example explicitDestination (was a plain copy of basic)
2123 * Make JniException a runtime exception, so that there is no need to
2124 declare the fact that you may encounter such a beast. I guess that
2125 nobody will ever want to survive such error.
2126 * Create specific errors for each MSG case of failure:
2127 host failure, transfer failure, timeout, task cancelled
2128 * Cleanup the exceptions that may get thrown by each function
2129 * Other internal cleanups in Java bindings. Performance still bad :/
2130 Ruby and Lua Bindings: create them
2131 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
2132 * That's new and great, you should try them out.
2133 Same functionalities than Java bindings, only even less polished
2135 * Kill the useless "rate" argument of SD_task_get_execution_time()
2136 Everyone used to provide -1 as a value, it was not used, and the
2137 semantic of a possible use wasn't even clear.
2138 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
2139 either as comm costs or compute costs to mean that there is no
2140 such thing for that specific task.
2141 * Add a SD_task_set_name() function
2142 * Fix SD_task_unschedule() on typed tasks
2143 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
2144 * In DAX loader, accept useless 'level' attributes to <job> since
2145 LIGO DAGs have them (seem to be to ease graphical representation).
2147 * Add an example masterslave_mailbox.c using send/receive and not
2148 the deprecated put/get interface.
2149 * Kill the MSG_paje_output() function. It's a noop since 2 years.
2150 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
2152 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
2153 (declare MSG_USE_DEPRECATED to still have the old name)
2154 * Add a MSG_task_set_data() function
2155 * About trace replay (see examples/msg/actions):
2157 - Allow to work with splitted trace files for each process
2158 Give the specific trace file as argument of each process,
2159 and call MSG_action_trace_run(NULL)
2160 You can still have one merged file for all processes.
2161 - Fix implementation of collective operations
2162 * Allow task_execute() on 0-sized tasks (closes #10063)
2164 * This is the first release of SimGrid where SMPI is not considered
2165 beta anymore (even if some corners should still be improved)
2166 * Port over the new SIMIX_network submodule (internal refactoring)
2167 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
2168 * Implement more missing elements of the standard:
2170 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
2172 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
2173 MPI_Scan() MPI_Get_processor_name()
2174 - Added implementation of missing case for Alltoall (warning: it's
2175 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
2176 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
2177 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
2178 SMPI_MPI_Allgatherv()
2179 * Bug fixes include:
2180 - MPI_Waitsome() was broken
2181 - Allow relative includes in smpicc
2182 - Command line cfg argument 'reference_speed' was ignored...
2183 - Some functions did not properly lead to auto-benching of user code
2184 - smpicc passes -O2 by default (just like openmpi one)
2186 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
2187 * Bug fixes about timeouts during communications
2188 * add SIMIX_message_sizes_output() as a pimple to write to file the
2189 amount of messages per size. Use gnuplot to get histogram.
2190 Pimple because that's the only user-visible function of simix,
2191 defined directly in xbt.h (irk, sorry)
2193 - Add a SIMIX_sem_get_capacity() function
2194 - Fix interactions with processe resume/suspende
2195 - release_forever() was stupidly broken
2196 - Fix SIMIX_display_process_status() for processes in a semaphore
2197 - Make SIMIX_sem_block_onto() user-visible
2198 * Refactoring context stuff:
2199 - Use pseudo-OOP for better modularity
2200 - reimplement SIMIX_process_kill() without process_schedule() so
2201 that the latter can take as invariant that it is called from
2203 - Merge context_start into context_new for sake of simplicity
2205 * Add a Vivaldi network model, coded live during SUD'10 ;)
2206 * Rename configuration variables to start a hierarchy:
2207 o cpu_model -> cpu/model
2208 o network_model -> network/model
2209 o workstation_model -> workstation/model
2210 * New configuration variables:
2211 o network/bandwidth_factor: correction to bandwith
2212 o network/latency_factor: correction to latency
2213 o netwotk/weight_S: correction to the weight of competing streams
2214 * Add a long description to the models, that users can see with such
2215 argument on the command line: --cfg=cpu/model:help
2216 * --help-models display the long description of all known models
2218 * config: add the ability to set a default value after registration
2219 Does not override any previously set value (e.g. from cmd line)
2220 * dict: allow to have integer key and data.
2221 When so, you need to use the following functions
2222 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
2223 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
2224 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
2225 In contrary to regular dicts, the key is not malloced before copy.
2226 Mixing scalar and regular elements in the same dict is not tested
2228 * Allow to use xbt_dynar_shrink() to expend the dynar instead
2229 Tracing for Visualization:
2230 * SimGrid is now instrumented in order to generate a trace file for
2231 visualization analysis: to use it, need to compile SimGrid with the
2232 "tracing" option enabled, and instrument the program using SimGrid with
2233 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
2234 (among other functions).
2235 * The instrumentation only traces the platform utilization for now
2236 * Documentation to use the tracing functions and how to analyze the
2237 traces with the Triva tool is written.
2238 * More information about: SimGrid FAQ (in the section Tracing Simulations
2241 * We moved to cmake as default build system. Autotools support will
2242 be dropped soon. Check the FAQ for more info about how to use it.
2243 * Greatly improved our cdash/ctest interactions
2244 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
2245 * Added memory checking tests with valgrind; lot of memleak fixing.
2246 This may be the first release of simgrid with so few memory issues
2247 * Added code coverage tests.
2248 Our coverage is still improvable, but at least we see it on cdash.
2250 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
2252 SimGrid (3.3.4) stable; urgency=low
2254 The "Desktop Grid needs love too" release (also called Xmas release).
2256 Models improvements:
2257 * Major speedup in the maxmin system solving by using lazy evaluation
2258 Instead of solving completely the maxmin system at each iteration,
2259 only invalidate (and recompute) the modified parts.
2260 This new feature is enabled in default models but you can try to
2261 turn it on with "--cfg:maxmin-selective-update=1" for other models.
2262 * Cas01 IMproved as default CPU model
2263 This CPU model is the same Cas01 model, but it uses the
2264 maxmin-selective-update flag and a heap structure to manage
2265 actions on SURF kernel.
2266 It reduces the complexity to find the next action to finish and,
2267 consequently, it's faster than the old Cas01.
2268 This is the new default CPU model (Cas01).
2269 * Rename the old Cas01 model to Cas01_fullupdate
2270 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
2271 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
2272 * CpuTI (CPU Trace Integration)
2273 A new CPU model whose objective is simulate faster when using
2274 availability trace files.
2275 Instead of using a full featured, over engineered maxmin system for
2276 CPU modeling, this model does the pre-integration of traces files
2277 to calculate the amount of CPU power available, and so, executes
2278 faster than the old CPU models.
2279 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
2280 * Use LV08 as default network model since it gives better accuracy
2281 for small messages and shouldn't change things for big ones.
2282 Use --cfg=network_model:CM02 to get the previous behavior.
2285 ******************************************
2286 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
2287 ******************************************
2288 * The new CPU model may changes simulations!
2289 The point is that events occurring at the exact same timestamp
2290 are not scheduled in the same order with the old and new
2291 version. This may be enough to completely change the execution
2292 of simulations in some cases.
2293 * The new network model will change simulations!
2294 This new model is more realistic than the previous one, so you
2295 should consider redoing your old experiments with this model.
2296 Sorry for the inconvenience.
2299 * Introduce the supernovae compilation mode
2300 When compiled that way, the whole SimGrid (or almost) is put in a
2301 single compilation unit and compiled in one shoot.
2302 This is to help gcc which has difficulties to inline stuff from one
2304 The speedup seem to be above 15%, althrough more tests are needed on
2305 amd64 to confirm that gain.
2308 * Port of MSG's mailbox on top of SIMIX network
2309 The put/get mechanism was greatly simplified on the way.
2312 * New SIMIX network module. Provides:
2313 - Mailbox: rendez-vous mechanism to find with who you want to speak
2314 - Synchronous send/recv: easier and hopefully faster since the
2315 logic is handled in the maestro process directly now
2316 - Asynchronous send/recv: you dreamt of it? It's here now
2317 Too bad that nobody cared enough to propagate the change to MSG.
2318 * Add semaphores as SIMIX synchronization mechanism.
2321 * new function SD_daxload(char*) to load a DAX file
2322 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
2323 * Introduce typed tasks. Specify its kind and cost at creation.
2324 At scheduling, just give where it should be placed, and the cost
2325 for each involved resource is automatically computed.
2326 Existing constructors so far (more to come of course):
2327 - SD_task_create_comm_e2e() for end-to-end communication
2328 - SD_task_create_comp_seq() for sequential computation
2329 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
2330 * new function SD_task_dump() for debuging display
2331 * new function SD_task_dotty(task,FILE*) writing to file the info
2332 about the task in dotty format
2333 * SD_task_dependency_exists() can now cope with having one of its
2334 arguments NULL. If so, it tests whether the other argument has any
2336 * Add getters on list of preceding/following tasks:
2337 SD_task_get_parents(task) and SD_task_get_children(task)
2338 * Add getters on amount of workstations and list:
2339 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
2340 * Add getter on task kind: SD_task_get_kind(task)
2341 * Update the start_time and finish_time of tasks on completion/failure
2342 * Bugfix: Remove task from state swags when destroyed
2345 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
2348 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
2349 dynar with one separate thread per value of the dynar.
2350 * Change the prototype of xbt_thread_create(), sorry.
2351 Added a boolean parameter indicating whether we want to join this
2352 thread (used in SG only for now)
2353 * Implement xbt_thread_join and xbt_thread_yield in SG also.
2356 * GTNetS wrappers should now be usable again (and betterly tested too)
2357 * Fix a major regression from 3.2 where the timeout provided to
2358 MSG_task_put_with_timeout() was used as absolute time before which
2359 the comm should be done.
2360 * Start to fix the <cluster> tag.
2361 - Internal links should be good now (beside of the loopback, which
2362 use the private link instead)
2363 - paths to the external world is still rather broken
2364 - the <route:multi> tag is just broken. Actually that's brain-dead.
2365 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
2366 to make it less stupid
2367 ** Check your platform with teshsuite/simdag/platforms/flatifier **
2368 * Fix a source-level compatibility glitch from 3.2: after defining
2369 MSG_USE_DEPRECATED, you can use the old name
2370 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
2371 * Allow to compile from the SVN with automake 1.11
2372 * Fix some problems when using the "start_time" tag in deployment XMLs.
2373 * Fix #8569: XBT/synchro.h has redundant declarations
2374 * Fix #8563: MSG return values and exceptions
2375 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
2376 * Integrate patch #8636: Obey DESTDIR when installing documentation.
2377 Thanks to Robson Peixoto.
2378 * Fix a vicious bug in dictionaries inducing that some elements were
2379 not freed on xbt_dict_free()
2381 Portability report of this version:
2382 * Main portability targets:
2383 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
2384 on (amd64/i386/ia64)
2385 - mac leopard on i386
2386 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
2387 but nothing critical.
2388 * Other platforms: windows, AIX and others were not tested for this release
2390 Timing report of this version:
2391 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
2392 scenario parameters). From 8h to a few seconds in desktop grid settings.
2393 * Supernovae brings about 25% speedup on i386.
2395 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
2397 SimGrid (3.3.3) stable; urgency=low
2399 The "Need for Speed" release.
2401 The timings done to validate the 3.3.2 were faulty.
2402 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
2404 The problem was a conversion from a manually handled vector to
2405 xbt_dynar_t on the critical path.
2406 xbt_dynar_foreach calls functions, inducing stack management crap.
2408 We inlined these functions and xbt_dynar_foreach is now breath taking.
2409 We also inlined xbt_swag_belong on the way.
2411 Here are some approximate speedup measurements (on master/slaves
2412 simulations lasting between 10s and 20s each):
2413 3.3.1 -> 3.3.2: about same performance
2414 3.3.2 -> 3.3.3: 40% speedup
2415 3.3.1 -> 3.3.3: 40% speedup
2416 3.3.1 with inline patch -> 3.3.3: 30% speedup
2418 Our reading is that the refactoring which occurred in 3.3.2 made us
2419 suffer much more from the xbt_dynar_foreach low performance, but
2420 once we solved this, this refactoring proved to be very performance
2421 effective. From the 40% speedup, somehow, 10% are due to the
2422 inlining and 30% to the refactoring.
2424 That's a pitty that gcc cannot inline functions placed in other files
2425 alone. We have to choose between:
2426 - break the encapsulation (by putting private data structures and
2427 accessors in headers files to help gcc)
2428 - live with low performance
2429 - switch to a decent compiler such as icc (not quite possible).
2431 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
2433 SimGrid (3.3.2) stable; urgency=low
2435 The "Simplicity does not preceed complexity, but follows it" release.
2437 The main contributors of this release were (lexical order):
2438 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
2441 * Extract the routing logic into its own object.
2442 (was dupplicated in network.c and workstation_LV07.c;
2443 Allows to implement other ways of storing that info)
2444 => kill now useless network_card concept
2445 - Use dynar to represent routes (instead of void** + int*)
2446 - kill link_set (use surf_network_model->resource_set instead)
2447 - Add a command-line option to choose the routing schema to use
2448 - Add three new models:
2449 * Floyd (shortest path computed at initialization)
2450 * Dijikstra (shortest path recomputed all the time)
2451 * Cached Dijikstra (shortest path computed on need)
2452 All these models where contributed by Silas De Munck, and are
2453 described in his ICCS09 paper.
2455 * Simplify model declaration
2456 (less redirections, less function to write when defining a model)
2457 - Factorize stuff between models:
2460 surf_model_resource_set(model)
2461 surf_model_resource_by_name(model, name)
2462 - Unify the types of models in s_surf_model_t (using an union)
2463 - Embeed fields of common_public directly into s_surf_model_t
2464 - Rename model methods:
2465 action_free ~> action_unref
2466 action_change_state ~> action_state_set
2467 action_get_state ~> action_state_get
2468 - Change model methods into functions:
2469 (model)->common_public->action_use ~> surf_action_ref
2471 * Implement a generic resource; use it as ancestor to specific ones
2472 (allows to kill duplicated code in models)
2473 Drawback: timer command don't need no name nor properties;
2474 workstation_CLM03 don't need no properties
2475 (but I guess we can live with those few bytes wasted)
2477 * Improve the action object model
2478 - implement a constructor avoiding dupplicated code about field
2479 initialization in generic_action part.
2481 * Kill the SDP model: it has an external dependency, is deprecated
2482 in flavor of modern lmm models, and didn't compile since a while
2485 * Relocation of the context module from XBT to SIMIX.
2486 (the context were decoupled from the simix processes, duplicating a lot of code)
2487 => a lot of code was factorized
2488 - less overhead is introduced during scheduling
2489 - simpler API for the context factory
2490 - the logic for process creation,destruction and manipulation was simplified
2491 * Simplification of the s_smx_process_t data structure.
2492 => accesing the simix level data associated to a process is faster now,
2493 and the code is a lot more readable.
2496 * Implement some more MPI primitives:
2497 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
2498 -implementation: Bcast: flat or 2-ary tree (default),
2499 Barrier: 4-ary tree,
2501 Allreduce: Reduce then Bcast
2502 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
2503 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
2504 Alltoallv: flat tree, like ompi
2506 * Add support for optimized collectives (Bcast is now binomial by default)
2507 * Port smpirun and smpicc to OS X
2510 * Kill SD_link_get_properties: hard to maintain and makes very little sense
2511 Shout out if you used it.
2514 * Display the list of still queued messages in SG mode when existing
2518 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
2519 * Add xbt_graph_node_get_outedges() [Silas De Munck]
2520 * Add xbt_str_from_file(FILE*)
2521 * Add xbt_dict_get_key achieving a linear reverse search
2522 * Remove the context module
2524 Portability report of this version:
2525 * Main portability targets:
2526 - Linux(debian)/x86/context
2527 - Linux(debian)/x86/pthreads
2528 - Linux(debian)/amd64/context
2529 - Linux(debian)/amd64/pthreads
2530 On these, we still have the eratic breakages of gras/pmm and
2531 amok/saturate_sg reported in previous version. We still think
2532 that the tests are the cause of the fault, not the tested code.
2534 - Mac OSX Leopard/x86/context
2535 Still false negative in tesh autotesting.
2536 Smpi still fails, but this time because readlink does not accept -f
2537 Everything seems to work properly beside of that.
2540 - AIX version 5.3 (only tested contexts this time)
2541 Smpi still fails there because mktemp is not installed.
2542 Everything seems to work properly beside of that.
2544 I managed to compile it for the first time, but several breakages.
2545 Won't delay the release for this exotic platform.
2547 * Windows: it's still lagging behind. If you want to help, please
2550 Timing report of this version:
2551 This version seem to be more than 5% faster than 3.3.1 (on linux
2552 64bits with contextes). The gain is less than expected, we are
2553 investigating this for next release.
2555 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
2557 SimGrid (3.3.1) stable; urgency=low
2560 * Implement a --cfg-help to show existing configuration variables
2561 * Build chain do not require doxygen in maintainer mode
2564 * fix a bug on struct sizeof computation, which prevented the
2565 exchange of arrays of structs in some conditions
2566 - added a regression test about this in datadesc_usage
2567 * Allow the exchange of 0-long dynamic vectors.
2568 - for that, use -1 as indicator of dynamic size instead of 0
2569 - This implied to change any size from unsigned long to long,
2570 reducing a bit communication abilities, but I guess that with
2571 64bits being quite common, this is more than enough.
2572 - This also induce a protocol change, thus bumping network protocol
2573 version from 0 to 1 (if we have external users, we have to get
2574 clean on that point too ;)
2575 - added two regression tests about this in datadesc_usage
2576 * Be more verbose when propagating local exceptions
2577 This helps debugging.
2578 * Display the status of simulated processes when receiving SIGINT in
2582 * Allow to control the simulation from a trace file.
2583 New functions MSG_action_register() and MSG_action_trace_run()
2584 The first one allows to associate a function execution to each
2585 kind of action while the second one parses a trace file and
2586 triggers the corresponding actions within the system.
2587 For now, only a toy example is provided in examples/msg/actions
2588 * Add an exemple of process migration in examples/msg/migration
2589 * Fix a bug in task exchange which broke MSG_task_get_sender()
2590 Add a teshsuite regression test for that.
2591 [Bug: if MSG_task_get_sender() is called after sender exit,
2593 * Fix a bug which prevented suspend/resume to work properly
2594 * Display the status of simulated processes when receiving SIGINT
2595 This fixes a regression of v3.3. due to the introduction of SIMIX
2596 * Bug fixing in failure management:
2597 - trace could not start by a failure at time 0
2598 - failure during communications were not working
2601 * Add SIMIX_process_set_name() to change the name of the current
2602 process in the log messages.
2603 * Store smx_hosts in a dict since we only retrieve them by name
2604 * Move the configuration infrastructure to surf
2607 * Move the configuration infrastructure to surf
2610 * Massive internal cleanups:
2611 - Store internal structures on processes instead of hosts (allows
2612 to have more than one process per host, in addition of being more
2614 - Cleanup the initialization/finalization process
2615 - Kill a whole bunch of unneeded synchronization:
2616 processes run in exclusive manner within the simulator
2617 - Move queues from global tables to process data fields
2619 - now accept -platform and -hostfile arguments
2620 - Pass the right rank value to processes according to the hostfile
2621 * Compile the examples by default, and use them as regression tests
2622 * Implement MPI_Wtime()
2623 * Change the reference speed to a command line option
2626 * TCP_gamma can now be specified as command line option using
2627 --cfg=TCP_gamma:10000000.0
2628 * Change the --surf-path cmd line option into --cfg=path:
2631 * Also include strbuff from xbt.h public header
2632 * xbt_ex_display(): do not free the exception after displaying
2633 This allows to do more with the given exception afterward.
2634 Users should call xbt_ex_free() themselves.
2638 Portability report of this version:
2639 * Main portability targets:
2640 - Linux(debian)/x86/context
2641 - Linux(debian)/x86/pthreads
2642 - Linux(debian)/amd64/context
2643 - Linux(debian)/amd64/pthreads
2644 These targets fail about 1/10 of times on gras/pmm, but we believe
2645 that this is because of the test, not because of simgrid.
2646 amok/saturate_sg fails even more rarely, and the test may not be
2649 - Mac OSX Leopard/x86/context
2650 The test suite still spits tons of errors because some obscure
2651 force prevents us from removing the temporary directories
2652 arguing that they still contain some metadata I've never heard of.
2653 Smpi fails because seq is not installed.
2654 Everything seems to work properly beside of that.
2657 - AIX version 5.3 (both contexts and pthread)
2658 Smpi still fails there because mktemp is not installed.
2659 XML inclusions seems rosty on AIX.
2661 * Windows: it's still lagging behind. If you want to help, please
2664 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
2666 SimGrid (3.3) stable; urgency=high
2670 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
2671 [Malek Cherier & Mt]
2673 * Introduce the SIMIX module: factorize code between MSG and GRAS.
2676 Until now, GRAS were using MSG as an interface to SURF. It was
2677 quite difficult because both interface have several differences
2678 (MSG channels vs GRAS sockets were the most notable point).
2680 This also opens the gate to SMPI (which should occur soon) and speed
2681 up simulations by to 40% (even if it were not the main goal).
2683 **************************************
2684 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
2685 **************************************
2686 The point is that events occuring at the exact same timestamp are
2687 not scheduled in the same order with the old and new version. This
2688 may be enough to completely change the execution of simulations in
2689 some cases. Sorry for the inconvenience.
2691 * Cleanup and upgrade the XML format to push further scalability
2692 issues (check http://hal.inria.fr/inria-00256883/ for more info)
2694 * Improve the testing infrastructure with tesh. Now a very large part of
2695 the code is tested not only by being run but also by checking that the
2696 output match an expected output [Mt].
2698 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
2699 is really less memory-demanding, which should allow you to use
2700 larger files in SimGrid [AL].
2702 * Inform valgrind about our contextes, so that it becomes usable
2703 with the default (and more effecient) version of SimGrid
2704 [contributed by Sékou Diakite, many thanks]
2707 * Introduce a listener thread in charge of receiving incoming
2708 messages from the network. It allows to overlap communication and
2709 computation but most notably, it removes some stupid deadlocks due
2710 to the fact that so far, a process could not send and receive at
2711 the same time. This made most non trivial communication schema
2713 * Convert the PIDs from long int to int to match the MSG ones (and
2714 linux ones too) [Mt]
2715 * New function: gras_agent_spawn() to launch a new process on
2716 current host. Only working in simulation for now. [Mt]
2717 * New function: gras_os_hostport() returning a constant form (ie,
2718 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
2721 * Make the backtrace of exceptions more human readable [Mt]
2722 * New module: xbt/str [Mt]
2723 a ton of string utility functions (split, join, printf to a newly
2724 allocated buffer, trim, etc)
2725 * New module: xbt/hash [Mt]
2726 SHA1 hashing algorithm (more to come if needed)
2727 * New module: xbt/synchro [Mt]
2728 synchronization tools (mutex and conditions) working the same way
2729 in simulation and in real life (mainly useful for GRAS, but not
2731 * New module: xbt/queue [Mt]
2732 classical producer/consumer synchronization scheme
2733 * xbt_dynar_new_sync() creates a synchronized dynar. All access
2734 (using the classical functions will get serialized) [Mt]
2735 * Make dictionary internal table dynamic. No need to specify its size
2736 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
2738 * Make sure the log channels are organized as a tree under windows
2739 (because of ANSI C compatibility issue, any channel were child of
2740 root directly) [Mt].
2743 * Cleaned many thing in surf and fixed a few bugs [AL].
2744 * Add a nice command line configuration mechanism to compose models [AL].
2745 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
2746 the previous one (KCCFLN05). It relies on something that looks like
2747 a max-min sharing mechanism but cannot be written as such. A new solver
2748 was thus designed [AL].
2749 * Add a new solver to lmm. Based on Lagrange optimization and
2750 gradient-based descent, it enables to efficiently maximise systems s.a
2752 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
2754 This solver enables to propose two new network models for TCP Reno and
2755 TCP Vegas based on Low's work. These models still need to be fully
2756 tested though [Pedro Velho].
2759 * Bug fix in SD_simulate. Now the time bound given as argument is
2761 * Use the new parallel task model (ptask_L07) as default.
2762 * Use the SURF command line configuration mechanism.
2763 * 0-size tasks (for synchronization) should now work.
2765 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
2767 SimGrid (3.2) stable; urgency=high
2771 We still experience issues on this platform, but we believe that at
2772 least MSG is usable.
2774 GRAS API BREAKAGE (for simplification purpose, sorry):
2775 * the gras_msgtype_by_name is not used anymore. Instead of
2776 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
2777 you can write (and must)
2778 gras_msg_send(toserver, "request", &request);
2779 - If you still want to pass a gras_msgtype_t to the function (to cache
2780 the type and avoid the lookup time), use the gras_msg_send_() variant.
2781 - Impacted functions:
2782 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
2783 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
2784 * The callbacks are now expected to return 0 when everything went well
2785 (just like the main() function)
2787 GRAS new features and improvements:
2788 * New module mechanism where user code can use per process globals [Mt]
2789 This is similar to gras_userdata_*() functions, but for libraries. It
2790 factorize some code developped over and over in the examples and AMOK.
2791 It has still to be documented and used (only amok/peermanagement is
2793 * Fix a vicious bug in the TCP buffering mechanism which leaded to message
2794 loss when they were small enough to fit into the buffer and sent quickly
2795 enough so that they can all get received in one shoot.
2796 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
2797 if not found. Use the *_or_null() variant for the old semantic.
2798 * In gras_msg_handle, do not discard messages without callback.
2799 They are probably messages to be explicitly awaited later (ie, proofs of
2800 mis-synchronization in userland since they are sent before being awaited)
2801 No big deal usually.
2802 * gras_socket_meas_send/recv: semantic changed!
2803 The numerical arguments used to be (1) the total amount of data to send
2804 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
2805 messages. This was need for the fool willing to send more than MAXINT
2806 bytes on quite fat pipes.
2809 * Do really rename the hostmanagement module to peermanagement. [Mt]
2810 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
2811 but this is rather new and this was documented in the module
2812 documentation (poor excuses, I admit)
2813 * Bandwidth measurement semantic changed! This follows the changes to
2814 gras_socket_meas_send/recv explained above.
2817 * A sequential mode has been added to the workstations. When a workstation
2818 is in sequential mode, it can execute only one task, and the other tasks
2819 are waiting in a FIFO. [Christophe Thiery]
2822 * The KCCFLN05 workstation model now handles parallel tasks. It is the
2823 model for SIMDAG. [Christophe Thiery]
2824 * Bug fix in the maxmin solver: Some values were close to 0 instead of
2825 equal to 0, which caused some bad behaviors in
2826 saturated_constraint_set_update. I now use a threshold mechanism like in
2830 * When running manually src/testall, you select specific units [Mt]
2831 testall is the result of our cunit mechanism, and should replace all
2832 the scripty thingy around since bash don't run easily on billware.
2834 * A mallocator system has been added. [Christophe Thiery]
2835 Mallocators allow you to recycle your unused objects instead of freeing them
2836 and allocating new ones.
2838 Documentation update:
2839 * FAQ reworking + New FAQs:
2840 - "Valgrind spits tons of errors!" [Mt]
2841 - "How to repport bugs" [Mt]
2842 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
2843 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
2844 - Communication time measurement within MSG [AL]
2845 - I experience weird communication times when I change the latency [AL]
2846 * GRAS tutorial [Mt]
2848 - an introduction to the framework and to the used communication model
2849 - an initiatic tour introducing the most proheminent features:
2851 . Lesson 0: Installing GRAS
2852 . Lesson 1: Setting up your own project
2853 o Part 2: Message passing
2854 . Lesson 2: Exchanging simple messages
2855 . Lesson 3: Passing arguments to the processes (in SG)
2856 . Lesson 4: Attaching callbacks to messages
2857 . Lesson 5: Using globals in processes
2858 . Lesson 6: Logging information properly
2859 . Lesson 7: Using internal timers
2860 . Lesson 8: Handling errors through exceptions
2861 . Lesson 9: Exchanging simple data
2862 . Lesson 10: Remote Procedure Calling (RPC)
2863 . Lesson 11: Explicitely waiting for messages
2864 . Recapping of message passing features in GRAS
2865 - A HOWTO section containing:
2866 o HOWTO design a GRAS application
2867 More are due, of course. They will come latter. In the meanwhile, you can
2868 check the examples which are still here.
2870 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
2872 SimGrid (3.1) stable; urgency=high
2876 There was a stack corruption somewhere, visible only when optimizing
2877 with these versions. [Vince]
2880 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
2881 module that enabled to play with Directed Acyclic Graphs. It is built
2882 directly on top of SURF and provides an API rather close to the old
2883 SG. Some old codes using SG are currently under rewrite to check that
2884 all needful functions are provided. [Christophe Thiery]
2887 * Complete rewrite of the KCCFLN05 workstation model. It is now an
2888 extension of the classical CLM03 model that gracefully handles
2889 failures. This is now the default model for MSG and GRAS. It doesn't
2890 handle parallel tasks yet though. [AL]
2891 * Bug fix: Weights were not correctly set in the network part.
2892 WARNING: This may have resulted in incorrect results with simulations
2893 where there are more than one flow on a given link. [AL]
2896 * After a (long ?) discussion on simgrid-devel, we have decided that the
2897 convention we had on units was stupid. That is why it has been decided
2898 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
2899 WARNING: This means that all previous platform files will not work as
2900 such with this version! A warning is issued to ask users to update
2902 A conversion script can be found in the contrib module of the CVS, under
2903 the name contrib/platform_generation/surfxml_update.pl [MQ]
2906 * Bug fix: Processes were started in reverse order, wrt deployment file.
2907 WARNING: if your code relies on this bug, please fix it. [AL]
2908 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
2909 being executed on two different locations. [AL]
2910 * Bug fix: Failures are now better supported thanks to Derrick's tests
2911 (there was many failure situations I hadn't thought of and that weren't
2912 correctly handled). [AL]
2913 * New function: MSG_host_is_avail indicates you whether a given m_host_t
2917 * New! a real RPC mechanism, as it ought to be since too long. [MQ]
2918 Exception occurring on server-side are propagated back to client (!).
2920 API CHANGE: the callback changed their prototype. Change:
2921 int my_handler(gras_socket_t expeditor, void *payload_data) {
2923 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
2924 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
2926 * New! function: gras_msg_handleall to deal with all messages arriving
2927 within a given period.
2928 * New! function: gras_socket_server_range to get a server socket in a
2929 range of port numbers (ease to avoid port number conflicts) [MQ]
2930 * New! gras processes display their backtrace when they get a SIGUSR1
2931 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
2932 Sweet to debug RL processes [MQ]
2936 - Do not force experiment sizes to be expressed in kb, or it becomes
2937 impossible to measure the latency this way (needs one byte-long tests)
2938 WARNING: this changes the amok_bw_* function semantic. [MQ]
2939 - Implements the link saturation stuff. [MQ]
2940 * Peer management module:
2941 New! module factorizing code that we wrote over and over [MQ].
2944 * New module: cunit (my jUnit implementation in ansi C) [MQ]
2945 - Test units are placed directly into the library code, they get extracted
2946 automatically and placed into the src/testall binary.
2947 - Convert most of the XBT tests to this system.
2948 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
2949 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
2950 live in the same C code. This required to change a little bit the API
2951 of surfxml parsing but shouldn't be an issue for end-users. [AL]
2952 * New module: sparse graph structure with basic algorithms (this is work
2953 in progress and the API is not considered to be frozen yet). [AL]
2954 * Display more information on backtraces: source line & function names are
2955 now displayed just like valgrind does (rely on addr2line tool) [MQ]
2956 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
2957 * Reworked a little bit some #include statements to load only required
2958 headers. Some user code that relied on SimGrid to include stdlib or
2959 stdio may need to include it by themselves. [AL]
2960 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
2962 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
2963 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
2964 but I guess that almost nobody used those parts. [MQ]
2966 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
2968 SimGrid (3.0.1) stable; urgency=low
2971 * Unfortunately, I had missed 5 misnamed functions:
2972 xbt_fifo_item_t xbt_fifo_newitem(void);
2973 void xbt_fifo_freeitem(xbt_fifo_item_t);
2974 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
2975 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
2976 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
2977 They're now deprecated. Please use their new versions:
2978 xbt_fifo_item_t xbt_fifo_new_item(void);
2979 void xbt_fifo_free_item(xbt_fifo_item_t);
2980 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
2981 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
2982 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
2984 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
2985 * Documentation: xbt_log module unmercifully reworked [MQ]
2986 * Bugfix: there was a problem with the ending of contexts with
2987 the pthread backend. It caused some weird deadlock or behavior
2988 depending on the pthread implementation. [AL]
2989 * Bugfix: get the exceptions raised in the simulator repport where
2990 and why they come from when they are not catched in time [AL, MQ]
2993 * Bugfix: Do repport the error when two non-connected hosts try to
2994 exchange data (Thanks to Flavien for stumbling into this one) [AL]
2997 * Add additionnal checkings on communications. Assert that two
2998 communicating hosts are connected by a set of links... [AL]
3001 * Add additionnal checkings on channel values in communication [AL]
3002 * New: MSG_task_get_source to see on which host a task was generated [HC]
3003 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
3004 the number of tasks waiting to be received on channel and sent
3006 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
3007 waits for the first task coming from a given host.. [AL]
3009 GRAS new functionnalities: [MQ]
3010 * Enhance the parsing macro to allow the size of multidimentional objects
3011 to be given thru annotations.
3012 * New example (and documentation): Matrix Multiplication a la RPC
3013 (as when I was young!) and fix a bunch of bugs found on the way.
3015 GRAS performance improvements: [MQ]
3017 * Reduce the amount of cbps creation/destruction by making it static to
3018 datadesc_send/recv() and using a (newly created) cbps_reset (based on
3021 * Change libdata to a set so that we can search for stuff by ID (and thus
3022 reduce the insane amount of dict lookups)
3025 * Actually implement gras_datadesc_copy() so that we don't have to mimick
3026 RL communication on top of SG since it's so uneffective.
3027 It may also be used for inter-thread communication in RL, one day.
3028 * Use gras_datadesc_copy() to exchange messages on top of SG
3030 - improve message exchange performance on top of SG
3031 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
3032 * Don't exchange on the network the size of the used part of buffer,
3033 instead, specify the possible buffer size to read().
3035 - reduces the amount of read/write calls (one pair per exchange)
3036 - reduces the amount of exchanged data (the size)
3037 - allows to retrieve all arrived data on receiver side, if we don't need
3038 it right now (subsequent read will peek the buffer)
3039 - allows the receiver to proceed with the begining of the stream before
3040 everything is arrived
3041 - make it possible to build an iov transport (using readv/writev)
3043 - take care of the data with non-stable storage (like stacked data),
3045 * If possible, TCP send uses vector I/O (when writev() is here)
3046 - Don't use it for receive since we send data sizes and data on the
3047 same stream, so we wouldn't be able to chain large amount of chunks
3048 before having to flush the stuff to read the size.
3049 * Rework the transport plugin mechanism to simplify it and reduce the
3050 amount of pointer dereferencement when searching for the right function
3053 * I guess that now, we do almost as few system calls as possible while
3054 doing as few data copy as possible.
3056 To improve it further, we could try to send all the sizes first and then
3057 all the data (to use iov on receiving size), but it's only a partial
3058 solution: when you have 2 dimensional data, the sizes of the second
3059 dimension is data of the first dimension, so you need 3 streams.
3061 I'm not sure the potential performance gains justify the coding burden.
3063 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
3065 SimGrid (3.00) stable; urgency=high
3068 * New! Give the possibility to hijack the surf parser and thus bypass
3069 MSG_create_environment and MSG_launch_application. Have a look at
3070 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
3072 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
3074 SimGrid (2.96) unstable; urgency=low
3079 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
3080 This deprecates the xbt_error_t mechanisms.
3081 It modifies (simplifies) all XBT and GRAS API.
3082 MSG API keeps unchanged (exceptions raised by XBT are catched from
3083 within MSG and masked with existing error handling facilities)
3086 * New! Add a FATPIPE model. [AL]
3087 * New! Add a parallel task model. [AL]
3088 * New! Add automatically a loopback interface (in the default
3089 network model) if none was precised.
3092 * Bugfix: MSG_process_resume now works with the current running process.
3094 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
3095 * Modification of MSG_task_get_compute_duration. Once a task has been
3096 processed, the value returned by this function is now equal to 0. [AL]
3097 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
3098 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
3099 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
3100 of a m_task. For now, MSG_task_cancel only works with computation
3102 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
3103 of the processor (in Mflop/s) regardless of the current load on the
3105 * API Change: use proper naming convention for MSG_getClock and
3106 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
3108 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
3109 This function changes the priority of a computation task. This priority
3110 doesn't affect the transfer rate. A priority of 2 will make a task
3111 receive two times more cpu power than the other ones. This function
3112 has been added to suit the needs of Nguyen The Loc and hasn't been that
3113 much tested yet. So if it fails, please report it and send me your code.
3115 * API Change: removed all functions and types that were marked "deprecated"
3116 since many months. Renamed MSG_global_init_args to MSG_global_init.
3118 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
3120 SimGrid (2.95) unstable; urgency=low
3123 * Steal some nice code to GNU pth to fix context detection and usage [AL]
3124 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
3125 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
3128 * Bugfix: Allow absolute paths for platform description files [MQ]
3129 * Bugfix: do free the variables after use. Leads to drastic performance
3131 * Implement max_duration (ie, timeouts) on resources [AL]
3134 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
3136 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
3137 the needed support (timeouts) [AL]
3140 * Implement measurement sockets. You can now get the bandwidth between two
3141 hosts thanks to AMOK (see below). [MQ]
3142 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
3143 dynar over the network (yeah) [MQ]
3144 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
3145 * simple/static token-ring example. [Alexandre Colucci and MQ]
3146 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
3147 in place before [MQ]
3150 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
3151 type parsing. "short" and "long" modifiers were also ignored; other
3152 modifier (such as reference level) are still ignored. [MQ]
3153 * Embeed the buffer size within the buffer itself on SG. [MQ]
3154 That way, send() are atomic and cannot get intermixed anymore (at least
3155 the ones which are less than 100k; bigger messages still have the issue)
3156 * Array size pushed by the field, not by the field type (or each
3157 and every long int will push stuff to the cbps) [MQ]
3158 * use select() to sleep since it allows to portably sleep less than one
3161 GRAS (minor cleanups)
3162 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
3165 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
3166 * type category 'ignored' killed as it was never used and were difficult
3168 * whether a type can cycle or not is now a flag, leaving room for more
3169 flags (as "ignored", if we feel the need one day ;)
3170 * Rename raw sockets to measurement sockets since "raw" has another
3171 meaning in networking community.
3174 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
3175 and offers features not belonging to GRAS but that most applications
3176 need. One day, it may be a set of plugins loadable at runtime.
3177 * New module: bandwidth
3178 bandwidth measurement between arbitrary nodes running this module. [MQ]
3180 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
3182 SimGrid (2.94) unstable; urgency=low
3184 The first beta release of SimGrid 3 !
3188 * Update the main page and the FAQ. Adding references to gforge.
3191 * Add a gras_os_getpid function.
3194 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
3195 * Extend the logs so that they also print PID, hostname, date, ... if
3197 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
3198 and kill the old version which were in testsuite/
3199 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
3203 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
3204 for users. Instead, each programming environment (GRAS, MSG,...) use it
3205 when needed to provide such a feature to users.
3206 Don't shortcut the mechanism or you will also shortcut the virtualization
3207 you need on the simulator.
3211 * Cleanups in configury with regard to compile optimization/warning flags.
3212 Also add -fno-loop-optimize to any powerpc since it's the optimization
3213 killing gcc (< 3.4.0).
3214 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
3215 needed by MSG examples complications
3216 * Borrow configury beautifications from PHP
3219 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
3220 warning (thanks loris for stumbling into this one).
3221 * Bugfix: stop loading private headers (gras_config.h) from the public
3225 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
3226 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
3227 RL would imply a DNS resolver, which is *hard* to do in a portable way
3228 (and therefore delayed).
3229 * Implement a real timer mechanism and use it in timing macros. This allows
3230 to avoid rounding errors and get a 0.000005 sec precision in timing
3231 macros. While I was at it, various cleanups:
3232 - allow to declare more than one timed section per file (fix a stupid bug)
3233 - move some private declaration to the right place
3234 - merge conditional execution and timing macros into emulation module
3235 - document the module
3236 - make sure the module cleanups its mess on gras_exit
3237 * Documentation improvements:
3238 - (new) how to compile applications using GRAS
3239 - (new) emulation support (timing macros)
3241 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
3243 SimGrid (2.93) unstable; urgency=low
3245 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
3248 - Use Paje properly where used. Still to be sanitized properly.
3249 - Portability fix: Add an implementation of the contexts using pthread
3253 - Add xbt_procname(): returns the name of the current process.
3254 Use it to show the current process's name in all logging.
3256 - fix detection of older flex version and the reaction, since we do
3257 depend on modern ones (we use lex_destroy)
3258 - Better separation of SG and RL in the libs: remove all simulation code
3259 from libgras. As a result, this lib is now only 200k when stripped.
3260 Some of the xbt modules may also be duplicated (two sets and such) and
3261 should be cleaned/killed before SG3.
3262 - Insist on using xlC on AIX because of weird problems involving gcc there.
3263 - Cleanup the make remote stuff. This is now done by scripts
3264 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
3265 mainly for our private use, but we're working on changing them to user
3268 - Bugfix: flush the socket on close only if there is some *output*.
3269 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
3271 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
3274 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
3276 SimGrid (2.92) unstable; urgency=low
3278 Alpha 3 on the path to SimGrid 3
3282 - New! First try of benchmarking macros.
3283 - New! First try so that gras_stub_generator generate deployment and
3284 remote compilation helpers.
3286 - Bugfix: Initialization fix in msg_test.
3290 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
3292 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
3294 - API Change: gras_os_sleep to take the amount of seconds as a double.
3295 Accepting an int was error prone since it was the only location where
3296 seconds were coded as such. It leaded to damn rounding errors.
3297 - Bugfix: Hard to belive that timers ever worked before this.
3299 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
3301 SimGrid (2.91) unstable; urgency=low
3303 Alpha 2 on the path to SimGrid 3
3307 - Bug fix in the lmm_solver.
3309 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
3310 through the function MSG_paje_output.
3311 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
3312 - It is possible to bound the rate of a communication in MSG with
3313 MSG_task_put_bounded() (was already in the previous version but I had forgotten
3314 to write it in the changelog).
3315 - Bug fix to let GRAS run on top of MSG until we move it directly on top
3320 - Various cleanups to the autotools stuff
3321 - Begin to move Gras examples to examples/gras/
3322 - Let make distcheck work again (yeah!)
3324 - documentation overhauled using doxygen.
3325 gtk-doc-tools is dead in SimGrid now.
3326 - Automatically extract all existing logging categories, and add the list
3327 to the documentation (long standing one, to say the less)
3329 - Cleanup the known architecture table. Reorder the entries to group what
3330 should be, and use a more consistent naming scheme.
3331 (some of the test dataset are still to be regenerated)
3332 - New! Allow library to register globals on each process just as userdata
3334 This is implemented using a xbt_dict and not a xbt_set, so we loose the
3335 lookup time (for now).
3336 Use it in msg and trp.
3337 This cleans a lot the internals and helps enforcing privacy of the
3338 headers between the gras components.
3339 - New! Add a timer mechanism, not unlike cron(8) and at(1).
3340 - Bugfix: gras_os_time was delirious in RL.
3341 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
3343 - Reenable GRAS now that it works.
3345 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
3347 SimGrid (2.90) unstable; urgency=low
3349 Alpha 1 on the path to SimGrid 3
3351 * It is a long time since the last release of SimGrid. I'm sorry about
3352 that but as I had told you, I was rewriting a lot of things. I apologize
3353 to those who had been reporting bugs to me and that I had not answered.
3354 If your bug is still in the new version, please tell me. Here is a
3355 summary of the main changes.
3357 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
3358 lead by Martin Quinson. As a consequence SimGrid gains a lot in
3359 portability, speed, and a lot more but you'll figure it out later.
3360 SimGrid now comprises 3 different projects: MSG, GRAS and SMPI.
3361 I wanted to release the new MSG as soon as possible and I have
3362 broken GRAS, which is the reason why, for now, only MSG is fully
3363 functional. A laconic description of these projects is available
3364 in the documentation.
3366 * REVOLUTION 2: I have removed SG and I am now using a new simulation
3367 kernel optimized for our needs (called SURF but only the developers
3368 should use it). Hence, MSG is now roughly 30 times faster and I think
3369 that by rewriting a little bit MSG, I could event speed it up a little
3370 bit more. Beside the gain in speed, it is also much easier to encode a
3371 new platform model with SURF than it was with SG. More to come...
3373 * REVOLUTION 3: I have tried to change a little as possible the API of
3374 MSG but a few things really had to disappear. The main differences
3375 with the previous version are:
3376 1) no more m_links_t and the corresponding functions. Platforms are
3377 directly read from a XML description and cannot be hard-coded
3378 anymore. The same format is used for application deployment
3379 description. The new format is described in the documentation.
3380 Have a look in tools/platform_generation. There is a tiny script
3381 that converts from the old platform format to the new one. Concerning
3382 the application deployment format, parsing the old one is tricky.
3383 I think most of you should however be able to convert your files. If
3384 it is really an issue, I can write a C code that does the conversion.
3386 2) the toolbox tbx does not exist anymore. We now have a library
3387 with much more data-structures but without the hash-tables (we have
3388 dictionaries that are much faster).
3390 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
3392 *****************************************************************************
3393 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
3394 * don't feel like converting the oldies. (Mt) *
3395 *****************************************************************************
3398 Version 2.90: "the long awaited one"
3399 - Finished rewriting and debugging MSG. Rewrote the documentation.
3400 - disable GRAS for now since it needs to be ported to the newest SG
3403 - Finish the port to windows (using mingw32 for cross-compile)
3406 - Main loop and datastructures of SURF. A cpu resource object is
3407 functional. Surf can thus be used to create cpu's with variable
3408 performance on which you can execute some actions.
3410 2004-11-15 Martin Quinson
3411 - Port to ARM. Simply added the alignment and size descriptions. Should
3412 work, but the ARM machines are so slow that I didn't had the opportunity
3413 to 'make check' over there yet.
3415 2004-11-15 Arnaud Legrand
3416 - Trace manager now written. It uses a heap structure and is therefore
3417 expected to be efficient. It may however be speeded up (particularly
3418 when many events occur at the same date) by using red and black
3419 trees. One day maybe...
3420 - Max-min linear system solver written. It uses a sparse matrix
3421 structure taking advantage of its expected use. Most operations are
3422 O(1) and free/calloc are called as few as possible. The computation of
3423 the minimum could however be improved by using a red and black tree
3426 2004-11-03 Arnaud Legrand
3427 - Rename every gras_* function that was in xbt/ to its xbt_
3429 - Add a heap and a doubly-linked list to xbt
3430 - Added a dichotomy to the dictionaries. make check works as well before
3431 so I assume that the patch is correct. I do not know however if things
3432 run effectively faster than before now. :)
3434 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
3435 SimGrid, and the version number is bumped to 2.x
3437 2004-10-29 Martin Quinson
3438 - Introduction of the remote errors.
3439 They are the result of a RMI/RPC on the remote machine.
3440 ErrCodes being scalar values, you can't get the host on which those
3441 errors did happen. Extending the error mechanism as in Gnome is possible.
3442 No idea yet whether it is a good idea.
3444 2004-10-28 Martin Quinson
3445 - Interface revolution: the Starred Structure Eradication.
3446 I used to do typedef struct {} toto_t; and then handle *toto_t.
3447 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
3448 - ???_t is a valid type (builded with typedef)
3449 - s_toto_t is a structure (access to fields with .)
3450 - s_toto is a structure needing 'struct' keyword to be used
3451 - e_toto_t is an enum
3452 - toto_t is an 'object' (struct*)
3454 typedef struct s_toto {} s_toto_t, *toto_t;
3455 typedef enum {} e_toto_t;
3456 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
3457 s_toto_t) is private.
3459 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
3460 so that it can set the variable to NULL. It was so for dicts and sets,
3461 it changed for dynars.
3463 - Fix a bunch of memleaks in dict_remove
3464 - Fix a bug in sg/server_socket opening: it failed all the time.
3466 2004-10-07 Martin Quinson
3467 - Speed up dynar lookup operation a bit.
3469 gras_dynar_get is dead.
3471 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
3472 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
3473 (which gives you the address of the stored data).
3475 gras_dynar_get_as is an helpful macro which allows you to retrieve a
3476 copy of the data using an affectation to do the job and not a memcpy.
3478 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
3479 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
3481 It does not really speedup the dynar test because they are
3482 setting elements all the time (and look them seldom). But the dict does
3483 far more lookup than setting.
3485 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
3487 2004-10-05 Martin Quinson
3488 - Allow to (en/dis)able the cycle detection at run time.
3490 Whether we should check for cycle or not is now a property of each
3491 datatype. When you think there may be some cycle, use datadesc_cycle_set.
3492 datadesc_cycle_unset allow to remove this property when previously set.
3494 Note that the cycle detection is off by default since it impacts the
3495 performance. Watch the data you feed GRAS with ;)
3497 This property is hereditary. Any element embedded in a structure having it
3498 set have it set for the time of this data exchange.
3500 You should set it both on sender and receiver side. If you don't set it on
3501 sender side, it will enter an endless loop. If you forget on receiver
3502 side, the cycles won't be recreated after communication.
3504 - Header reorganization.
3505 Kill gras_private.h, each submodule must load the headers it needs.
3507 2004-10-04 Martin Quinson
3508 - Interface revolution: do not try to survive to malloc failure.
3510 Now, gras_malloc and friends call gras_abort() on failure.
3511 As a conclusion, malloc_error is not a valid error anymore, and all
3512 functions for which it was the only gras_error_t return value are
3513 changed. They now return void, or there result directly.
3514 This simplify the API a lot.
3516 2004-09-29 Martin Quinson
3517 - Re-enable raw sockets.
3518 Created by gras_socket_{client,server}_ext;
3519 Used with gras_raw_{send,recv}
3522 It should allow to kill the last bits of gras first version soon.
3524 This is not completely satisfactory yet (duplicate code with
3525 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
3528 - Simplify transport plugin (internal) interface by not passing any
3529 argument to _server and _client, but embedding them in the socket
3532 2004-09-28 Martin Quinson
3533 - Finish the port to AIX.
3534 autoconf was my problem (segfault within the malloc replacement
3535 function. No idea why)
3537 2004-09-16 Martin Quinson
3538 - Fix some size_t madness on 64bit architectures.
3540 2004-09-08 Martin Quinson
3541 - Reduce the number of system headers loaded, overload some more system
3542 calls (such as malloc to cast the result of the system one, and work
3544 - Fix and reintroduce the config support
3546 2004-09-07 Martin Quinson
3547 - Source code reorganization to allow Arnaud to surf all over there.
3548 - Allow to document the logging categories.
3549 - Remove all uppercase from logging categories and useless cleanup in names.
3551 2004-08-18 Martin Quinson
3552 Version 0.6.2 (protocol not changed; API changed)
3553 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
3554 gras_error_t), and NULL when not found. Functions expecting a msgtype
3555 as argument (msg_wait; msg_send) deal with NULL argument by providing a
3556 hopefully usefull message.
3557 - Portability to prehistoric sparcs again
3559 2004-08-17 Martin Quinson
3560 Version 0.6.1 (protocol not changed; ABI not changed)
3561 - prealloc some buffers to speed things up
3563 2004-08-11 Martin Quinson
3564 Version 0.6 (protocol not changed; ABI expended)
3565 - The parsing macro can deal with the references, provided that you add
3566 the relevant annotations (using GRAS_ANNOTE(size,field_name))
3568 2004-08-09 Martin Quinson
3569 Version 0.5 (protocol not changed; ABI changed)
3570 - Allow to off turn the cycle detection code in data exchange at
3571 compilation time. It should be at run time, but I'm short of time (and
3572 the config stuff is still broken). That way, we keep dict out of the
3573 critical path, which is good because the performance is poor:
3574 - search not dichotomial yet
3575 - dynar give no way to access their content and memcpy everytime
3576 - In composed data description (struct, ref and so on), stop foolness of
3577 keeping the subtype's ID, but store the type itself. This keeps sets out
3578 of the critical path, which is good since they rely on dynar and
3579 dictionnaries. The only loose of that is that we cannot detect the
3580 redeclaration of a structure/union with another content (but I'm not sure
3581 the code detected well this error before anyway). We still can detect
3582 the redefinition discrepancy for the other types.
3583 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
3584 it breaks the code because of type-punning used all over the place).
3585 This breaks on all non-gcc architectures (for now).
3587 All those changes (plus the buffer of last time) allow me to gain 2 order
3588 of magnitude on cruel tests consisting of 800000 array of integers on two
3589 level of a hierarchical structure (200 secondes -> 4 secondes)
3592 - the selector of reference must now return the type it points to, not
3593 the ID of this type.
3595 2004-08-06 Martin Quinson
3596 Version 0.4 (protocol changed; ABI not changed)
3597 - Allow to pass --gras-log argument to processes in simulation mode. Really.
3598 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
3599 - Implement a buffer transport, and use it by default (it relies on tcp in
3600 real life and on sg in simulation).
3601 That's a bit hackish since I had a new field to the structure to store
3602 its data without interfering with the subtype ones. Inheritance
3603 is tricky in C. And that's a kind of reverse inheritance with one class
3604 derivating two classes. Or maybe a game with java interfaces. Anyway,
3605 that's damn hard in C (at least).
3606 Moreover, I got tired while trying to ensure plugin separation and
3607 genericity in SG mode. MSG wants me to do weird things, so let's go for
3608 cruel hacks (temporarily of course ;).
3609 See comment in transport_private.h:71
3610 - do not include all the _interface headers in private but in the files
3611 which really need them (to cut the compilation time when they are
3614 2004-07-26 Martin Quinson
3615 Version 0.3 (protocol not changed; ABI changed)
3616 - Major overhault of the datadesc interface to simplify it:
3617 - shorted the function names:
3618 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
3619 - add a trivial way to push/pop integers into the cbps without malloc.
3620 This allows to make really generic sub_type description, which simply
3621 pop their size of the stack.
3622 - add a function gras_datadesc_ref_pop_arr() which does what users want
3623 most of the time: Declare a dynamic array (which pops its size of the
3624 stack) and declare a reference to it. Poor name, but anyway.
3625 - kill the post-send callback, add a post-receive one
3627 2004-07-23 Martin Quinson
3628 Version 0.2 (protocol changed; ABI changed)
3629 - add some testing for cpbs in the test cases, and fix some more bugs.
3630 This invalidate again the little64 data file, since I cannot regenerate
3632 - remove an awfull optimization in the logging stuff, allowing me to:
3633 - understand it again
3634 - learn gcc how to check that the argument match the provided format
3635 - fix all errors revealed by gcc after that
3636 - internal keys of dict are not \0 terminated. Deal with it properly in
3637 loggings instead of segfaulting when the user want to see the logs :-/
3639 2004-07-22 Martin Quinson
3640 - Fix some stupid bug preventing cbps (callback postit) from working
3642 2004-07-21 Martin Quinson
3643 - Some documentation cleanups
3644 - remove the useless last argument of msgtype_declare
3645 - rename the Virtu functions to fit into the 'os' namespace
3646 - move headers src/include -> src/include/gras/ and stop fooling with
3647 gras -> . symbolic link
3648 - make distcheck is now successful
3650 2004-07-19 Martin Quinson
3652 - Build shared library also
3653 - Install html doc to the right location
3654 - stop removing maintainer files in make clean
3655 - build tests only on make check
3657 2004-07-13 Martin Quinson
3659 - No major issue in previous version => change versioning schema
3660 - Re-enable little64 convertion test now that Abdou kindly regenerated the
3661 corresponding dataset.
3663 2004-07-11 Martin Quinson
3665 - Get it working with any kind of structure (we can compute the padding
3666 bytes remotely for all the architectures I have access to)
3667 - Implement the structure parsing macro (still not quite robust/complete)
3668 - Improvement to the remote testing toysuite
3670 2004-07-10 Martin Quinson
3671 [autoconf mechanism]
3672 - get ride of a bunch of deprecated macros
3673 - actually run the test for two-compliment, not only compile it :-/
3674 - test whether the structures get packed (and bail out if yes. Damn.
3675 Alignment is a serious matter)
3676 - test whether the structures get compacted (but respecting the alignment
3677 constraints of each types)
3678 - test whether the array fields of structures can straddle alignment boundaries
3680 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
3681 (took me 2 hours to find that bug, looking at the wrong place)
3682 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
3683 before sending/receiving and are used to compute the offsets of fields
3684 - Given that padding size depend even on compiler options, keep track of
3685 alignment and aligned_size only for the current architecture. Not a big
3686 deal since we send structure fields one after the other (seems
3688 - Add the datastructure used for IEEE paper by the PBIO guys to the test
3689 program, let it work on linux/gcc/little32. portability todo.
3691 2004-07-08 Martin Quinson
3692 - import and improve remote compilation support from FAST
3693 - make sure make check works on half a dozen of machines out there
3695 2004-07-07 Martin Quinson
3696 Let's say it's version 0.0.3 ;)
3697 - Implement conversions (yuhu!)
3698 - Let it work on solaris (beside conversion, of course)
3699 - Stupid me, using rand() to generate the conversion datatests in not wise.
3701 2004-07-06 Martin Quinson
3702 - Let make dist work, since I'm gonna need it to compile on remote hosts
3703 - Let Tests/datadesc_usage write the architecture on which the file was
3704 generated as first byte.
3705 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
3706 architecture descriptions.
3707 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
3708 on those architectures.
3709 - Optimization: send/recv array of scalar in one shoot
3711 2004-07-05 Martin Quinson
3712 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
3714 - Plug a whole bunch of memleaks
3715 - each process now have to call gras_{init,exit}. One day, their log
3716 settings will be separated
3717 - Continue the code factorisation between SG, RL and common in Transport.
3719 2004-07-04 Martin Quinson
3721 - Redistribution between SG and RL.
3722 We wanna have to accept in SG, so move accepted related parts of RL in
3723 the common part. (more precisely, the dynar of all known sockets is no
3724 more a static in transport.c, but part of the process_data)
3726 [gras_stub_generator]
3727 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
3729 2004-07-03 Martin Quinson
3730 - Create a new log channel tbx containing dict, set, log, dynar (to shut
3731 them all up in one shot)
3733 - Fix the ugly case of reference to dynamic array.
3734 - New (semi-public) function gras_datadesc_size to allow the messaging
3735 layer to malloc the needed space for the buffer.
3737 - gras_socket_close now expect the socket to close (and not its address to
3738 put NULL in it after it). This is because the socket passed to handlers
3739 is one of their argument (=> not writable).
3741 - propagate the interface cleanup from last week in datadesc, ie remove a
3742 superfluous level of indirection. User pass adress of variable
3743 containing data (both when sending and receiving), and not of a variable
3744 being a pointer to the data. Let's say that I like it better ;)
3745 The price for that is constructs like "int msg=*(int*)payload" in
3746 handlers, but it's a fine price, IMHO.
3748 - Let it work in RL (yuhu)
3750 2004-06-21 Martin Quinson
3752 - porting SG plugin and SG select to new standards (works almost).
3753 - plug memleaks and fix bugs around.
3756 - cleanup the prototype of data recv and force users to specify when they
3757 want to handle references to objects. Test case working even for cycles.
3758 - plug memleaks. Valgrind is perfectly ok with this.
3760 2004-06-12 Martin Quinson
3762 - cleanup the separation between plugin and main code in plugin creation
3764 2004-06-11 Martin Quinson
3766 - Reput hook for raw sockets, needed for BW experiments
3767 - kill a few lines of dead code
3768 [Data description] Interface cleanup
3769 - gras_datadesc_by_name returns the searched type or NULL.
3770 That way, no variable is needed to use a type desc once, which makes
3772 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
3773 two parameters were strings (field name, type name), leading to
3775 [Dicos] Interface cleanup
3776 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
3777 This is consistant with the dynar API.
3779 2004-04-21 Martin Quinson
3781 - Porting to new standards.
3783 - interface cleanup.
3784 There is no bag anymore, no need to take extra provision to mask the
3785 pointers behind "ID".
3786 Better splitup of functions between files create/exchange/convert.
3787 This is still a bit artificial since convert and receive are so
3788 interleaved, but anyway.
3790 - add a queued message list to procdata (the ones not matching criteria
3792 - factorize some more code between SG and RL wrt procdata
3794 - use gras_exit in example to track memleaks
3795 - get rid of gs_example now that GS is properly integrated into gras
3796 - update run_test to integrate the latest tests (datadesc)
3798 - rename WARNINGn macros to WARNn since it prooved error-prone
3800 2004-04-19 Martin Quinson
3802 - register init/exit functions within gras module mechanism
3803 - send/receive function.
3804 Convertion is not implemented, but short-cutted if not needed.
3805 struct/array elements are sent one by one (instead of block-wise), but
3806 nobody really cares (yet). Get a prototype before optimizing.
3807 - tests (using a file socket) for DD send/receive on:
3808 - base types: int, float
3809 - array: fixed size, string (ie ref to dynamic string)
3810 - structure: homogeneous, heterogeneous
3811 - chained list, graph with cycle
3812 Believe it or not, valgrind is not too unhappy with the results. The
3813 cycle happily segfaults, but the others are ok. And I'm sick of pointers
3817 - Bugfix when using a filename explicitely (instead of '-')
3819 2004-04-09 Martin Quinson
3821 - factorize more code between RL and SG in socket creation
3822 - Complete the implementation and tests of:
3824 o file (only in RL, and mainly for debugging)
3826 I lost 3 days to design a portable address resolver, and then decided
3827 that the prototype mainly have to run on my box.
3828 Addressing portability too early may be like optimizing too early :-/
3830 - use gras_init in the Tests instead of the crappy parse_log_opt
3831 (the latter function is removed)
3832 [Conditional execution]
3833 - New functions: gras_if_RL/gras_if_SG (basic support for this)
3834 [Code reorganisation]
3835 - Get rid of libgrasutils.a since it makes more trouble than it solves.
3836 Build examples against the RL library, since there is no way to disable
3837 its creation for now.
3839 For information, the beginning of coding on GRAS was back in june
3840 2003. I guess that every line has been rewritten at least twice since