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
47 - #325: Turning off a host has different behavior on sleeping actors and computing actors
49 ----------------------------------------------------------------------------
51 SimGrid (3.21) October 3. 2018
53 The Restarting Documentation (TRD) Release.
56 - Convert the user manual to Sphinx for improved usability.
57 Unstable version now hosted on https://simgrid.frama.io/simgrid
58 Many glitches remain; stay tuned.
59 - Restrict the Doxygen reference API to the installed header files.
60 (documenting all internals this way is overkill + doxygen scales badly)
61 - New tutorial on S4U (highly inspired from the old MSG one, but with
62 a git repository to fork as a starting point, and a docker image)
63 - Started but not finished a SMPI tutorial inspired from the JLPC'14 one.
64 - The Developper manual is still to be converted (not compiled until then)
65 - Some parts are still missing in this conversion (such as the
66 platform and deployment sections) while others were blindly converted
67 and would need more love (such as the configuration flags).
68 Things will certainly further improve in the future releases.
71 - Fully reimplement auto_restart mechanism that was utterly broken
72 (fix #22, #131 and #281 that were all very related)
73 - Implement semaphores (fix #303 and #291)
74 - When creating an actor from a function and its parameters,
75 move-only parameters are not allowed anymore, as it would prevent
76 the actor to be restartable if its parameters are consumed on run.
77 - s4u::Io: IOs go asynchronous as activities. New methods in s4u::Storage:
78 - io_init(sg_size_t, s4u::Io::OpType) to create a READ or WRITE asynchronous
79 IO operations that can be started, waited for, or canceled as a regular
81 - read_async(sg_size_t) and write_async(sg_size_t) which are wrappers on
85 - Rename 'power' and 'power_used' variables into 'speed' and 'speed_used'
86 - New host variable: 'core_count'
89 - Remove xbt_os_thread_specific features
90 - Remove portability wrapper to condition variables
91 - Remove xbt_os_thread_yield()
94 - MPICH collective selector now mimics MPICH 3.3b
95 - OpenMPI collective selector now mimics OpenMPI 3.1.2 (default "tuned" setting)
96 - MPI_Init(NULL,NULL) is now allowed
97 - smpi/wtime option now injects time in gettimeofday or clock_gettime calls
98 - Command-line arguments should now be handled properly in Fortran simulations
99 - MPI Attributes and related callbacks should work in Fortran
100 - Apps using C + Fortran should now work
101 - MPI_* calls now check for non MPI_SUCCESS return values and emit warnings
102 - Support MPI_Error_String
105 - Due to an internal bug, Msg.run() must now be your last line.
106 We hope to fix it in a future release, and we are sorry for the inconvenience.
109 - #22: Process autorestart seem to only work with CAS01 cpus
110 - #56: Feature request: dynamic SMPI replay
111 - #93: simgrid should not eat --help
112 - #111: How to change the loopback link characteristics?
113 - #116: Platform cluster radical
114 - #117: Platform cluster/host order
115 - #129: Replay_multiple on steroid
116 - #131: Java : autostart does not work
117 - #143: Setting a breakpoint at a given time
118 - #235: Network energy models should be integrated
119 - #264: Add ptask L07 resource tracing
120 - #271: Dynamic and manual replay of SMPI traces
121 - #279: Breakpoints option uses time deltas instead of absolute time
122 - #281: Daemonized actor no longer daemonized after an auto-restart
123 - #282: TIT convertor erase traces when using absolute path in the trace list file
124 - #285: segfault when a s4u actor kills itself with msg process tracing activated
125 - #286: Pajé traces are not exposing the number of cores
126 - #287: Command-line parsing should stop when encountering '--'
127 - #288: MPI_Init(NULL, NULL)
128 - #289: Improve documentation of Actor::on_destruction and this_actor::on_exit()
129 - #290: Method to check if a mailbox has a message ready to be consumed
130 - #291: [s4u] semaphores do not seem available yet
131 - #294: Alltoall collective implementation of mpich
132 - #295: Starting a Host as OFF is not supported
133 - #296: DTD too permissive
134 - #299: Add a s4u barrier example
136 ----------------------------------------------------------------------------
138 SimGrid (3.20) Released June 24. 2018
140 The proxy snake_case() release.
143 - The whole API is now using snake_case() instead of mixing it with camelCase.
144 Compatibility wrappers in place for one year.
145 - We took the opportunity to increase the consistency of the API.
146 Please report any remaining glitches.
147 - New function simgrid::s4u::Host::get_actor_count:
148 Returns the number of actors running on a specific host.
151 - SMPI is now tested with ~45 proxy apps from various sources, with none or
152 only minor patching needed: check https://github.com/simgrid/SMPI-proxy-apps
153 - Replay: The replay file has been re-written in C++.
154 - Replay: Tags used for messages sent via MPI_Send / MPI_Recv are now
155 supported. They are stored in the trace and used when replayed.
156 - Basic support of MPI_Cancel. Robustness not guaranteed.
157 - Support of MPI_Win_allocate_shared, MPI_Win_shared_query, MPI_Comm_split_type
158 (only for MPI_COMM_TYPE_SHARED).
159 - New option: smpi/privatize-libs, to add external shared libs to be privatized
160 by SMPI. They will be copied locally and loaded separately by each process.
161 Example --cfg=smpi/privatize-libs:"libgfortran.so.3;libscalapack.so".
162 - Tracing: add tracing for MPI_Start, Startall, Testall, Testany
163 - Interception of getopt, getopt_long and getopt_long_only calls to avoid issues
164 with internal index optind with multiple processes. Only works if MPI_Init has
166 - Fortran: SMPI builds a mpi.mod file which should allow use of "use mpi"
167 syntax without preprocessing tricks.
170 - Change --cfg=tracing/msg/vm to --cfg=tracing/vm as virtual machine
171 behavior tracing is no longer limited to MSG
172 - TIT (Time Independent Traces): We finally support tags. Unfortunately,
173 this means that traces now need to be updated or re-obtained; both Irecv
174 and Isend lines in your traces have now in total 5 mandatory fields:
175 <rankid> <command> <to/from rankid> <tag> <size>
176 To update your traces, it suffices to add a 0 for the tag here.
177 - TIT now also supports waiting for a distinct request via MPI_Wait.
178 Wait/Test now wait for a specific request, not just the last one that was
179 issued. This unfortunately means another update, because we need to
180 identify which request you want to wait for. We do this via the
181 triplet (sender, receiver, tag), which needs to be added:
182 <rankid> <command> <sender> <receiver> <tag>
183 - Actions are now in lower case (e.g., "allReduce" becomes "allreduce").
184 New script simgrid_convert_TI_traces.py: upgrade your TI traces.
187 - The deprecation of MSG is ongoing (but this should not impact you).
188 Many MSG functions are now simple wrappers on the C API of S4U. If
189 you wish to convert your code to S4U, find the S4U counterparts of
190 your MSG calls in src/msg/msg_legacy.cpp.
191 - MSG can still be used, but won't evolve anymore.
194 - Allow to run the Link energy plugin from the command line with
195 --cfg=plugin:link_energy
196 - Rename Energy plugin into host_energy
197 - Rename Load plugin into host_load
200 - Add parameter --cfg=simix/breakpoint to raise a SIGTRAP at given time.
201 - kill simix::onDeadlock() that was somewhat dupplicating s4u::on_deadlock()
202 - Improve performance when handling timeouts of simix synchros.
205 - Config: the C API is now deprecated (will be removed in 3.23), and
206 the C++ API has been slightly improved.
209 - Fix several build issues on OSX.
210 - Move simgrid_config.h to simgrid/config.h (old header still working)
213 - #143: Setting a breakpoint at a given time
214 - #150: Inconsistent event names in SMPI replay
215 - #258: daemonized actors hang after all non-daemonized actors have completed
216 - #267: Linker error on unit_tmgr
217 - #269: SMPI: tracing of MPI_Wait/all/any broken
218 - SMPI: Fix various crashes with combined use of MPI_PROC_NULL and MPI_IGNORE_STATUS
220 ----------------------------------------------------------------------------
222 SimGrid (3.19.1) Released March 22 2018
224 The Fixed ABI Release.
226 As you may know, we are currently refactoring SimGrid in deep.
227 Upcoming SimGrid4 will be really different from SimGrid3: modular,
228 standard and extensible vs. layered, homegrown and rigid. C++ vs. C.
230 Our goal is to smooth this transition, with backward compatibility
231 and automatic update paths, while still progressing toward SimGrid4.
233 SimGrid remains open during works: The last pure SimGrid3 release was
234 v3.12 while all subsequent versions are usable alpha versions of
235 SimGrid4: Existing interfaces remain unchanged, but the new S4U
236 interface is budding and the internals are deeply reorganized.
238 Since 2015, we work hard to reduce the changes to public APIs. When
239 we need to rename a public library symbol in S4U, we let your
240 compiler issue an explicative warning when you use the deprecated
241 function. These messages remain for four releases, i.e. for one full
242 year, before turning into an error. Starting with v3.15, your can
243 also adapt to API changes with the SIMGRID_VERSION macro, that is
244 defined to 31500 for v3.15, to 31901 for v3.19.1 and so on.
246 Starting with this v3.19.1, our commitment to reduce the changes to
247 the public interfaces is extended from the API to the ABI: a program
248 using only MSG or SimDag and compiled against a given version of
249 simgrid can probably be used with a later version of SimGrid without
250 recompilation. We will do our best... but don't expect too much of
251 it, that's a really difficult goal during such profund refactoring.
253 The difference between v3.19 and v3.19.1 is that the former was
254 accidentally breaking the ABI of MSG, while the later is restoring
257 S4U and kernel APIs will still evolve until SimGrid4, with one-year
258 deprecation warnings as currently. In fact, cleaning up these
259 interfaces and converting them to snake_case() is one release goal of
260 v3.20. But don't worry, we are working to smooth this upgrade path.
262 In summary, new projects should start with S4U to benefit of the
263 future, but old MSG projects should still be usable with no change.
265 ----------------------------------------------------------------------------
267 SimGrid (3.19) Released March 20 2018
269 The Moscovitly-cold Spring release.
271 SMPI user-visible improvements:
272 - Support of MPI_Type_create_subarray
273 - Unimplemented MPI calls now abort (instead of issuing a warning)
274 Some harmless calls around errhandlers still only issue a warning.
275 - MPI_Sendrecv was behaving badly when MPI_PROC_NULL was sender or receiver.
276 - Starting MPI ranks (or even MSG/S4U actors) once the simulation started
277 is now possible (mmap privatization was refactored to this end).
278 Adding new SMPI instances should also be technically doable now.
280 SMPI internal cleanups:
281 - Removed index notion from SMPI -- no more "getPid() - 1"!
282 In tracing files, actors are called rank-<PROCESS-ID> but these are
283 NOT the real ranks (tracing several communicators is not supported yet).
284 - Deprecate smpi_process_index() (will be removed in 3.22)
285 - Better testing on classical proxy apps, through an external project:
286 https://github.com/simgrid/SMPI-proxy-apps/
289 - Use a graphical TOC to make it easier to find the documentation you need
290 - Revamp the MSG tutorial
293 - Fix MSG_task_get_remaining_work_ratio(): return 1.0 for unstarted tasks.
294 - Remove parameter of MSG_process_killall().
295 Resetting the PID was bogus anyway (several actors could have the same PID).
298 - Execution->setHost() can be called after start(), to migrate it.
299 - Comm::test_any() is now implemented.
300 - s4u::Actor now has onCreation() and onDestruction() signals.
301 - Install some kernel header files for the users' plugins and more.
302 Warning, their API is really not stable yet.
303 include/simgrid/kernel/resource/{Action,Resource,Model}.hpp
304 include/simgrid/kernel/routing/*Zone.hpp
307 - SD_task_dependency_add(): remove unused parameters 'name' and 'data'.
309 Build System and other cleanups:
310 - Remove unused run-time parameter "tracing/onelink-only".
311 - SimGrid now works with intel compilers (MC still buggy)
312 - Remove XBT_LOG_CONNECT, it should be useless nowadays.
313 - tesh kills subprocesses on timeout (but not on windows)
316 - Rename FULLDUPLEX into SPLITDUPLEX (old name still accepted)
319 - #194: Feature request: simgrid::s4u::Comm::test_any()
320 - #245: migrating an actor does not migrate its execution
321 - #253: Feature Request: expose clusters as objects
322 - #254: Something seems wrong with s4u::Actor::kill(aid_t)
323 - #255: Tesh broken on Windows
324 - #256: Modernize FindSimGrid.cmake
325 - #257: Fix (ab)use of CMake install
327 ----------------------------------------------------------------------------
329 SimGrid (3.18) Released December 24 2017
331 The "Ho Ho Ho! SimGrid 4 beta is coming to town" release.
333 MSG IS NOW DEPRECATED. Please use S4U for new projects.
334 - Support for MSG should not be removed from SimGrid before 2020,
335 but future evolutions will be limited to the integration of
336 user-provided patches.
339 - s4u::onDeadlock() signal, run before stopping the simulation.
340 - s4u::Exec: asynchronous executions (abstraction of background
342 - s4u::Host->getLoad() returns the achieved speed in flops/s
345 - Link::name() is deprecated and will be removed in v3.21, use
346 Link::getCname() instead.
347 - Mailbox::getName() changed to return a std::string, use
348 Mailbox::getCname() instead to get a char*.
349 - Storage::getName() changed to return a std::string, use
350 Storage::getCname() instead to get a char*.
351 - s4u::allStorages() becomes s4u::getStorageList(whereTo)
352 to have both allocation and deallocation of the map in user space.
355 - Forbid the use of MSG_task_get_flops_amount() on parallel tasks:
356 The amount of flops remaining to do is a vector, not a scalar.
357 - Introduce MSG_task_get_remaining_work_ratio(), which does what its
358 name implies on both sequential and parallel tasks.
359 - Both changes fix GitHub's #223 using PR #237 as a basis.
360 Thanks Michael Mercier.
361 - Most examples were converted to S4U and hidden elsewhere at tests.
362 Rationale: we still want MSG to work; we want newcomers to use S4U.
365 - LMM stuff moved to its own namespace: simgrid::kernel::lmm.
366 - Renamed LMM classes (e.g. s_lmm_system_t -> System).
369 - Switch to the faster dlopen privatization mechanism by default
370 - Documentation improvments
373 - Live migration is getting moved to a plugin. Dirty page tracking is
374 the first part of this plugin. This imply that VM migration is now
375 only possible if one this function is called:
376 - C/MSG: MSG_vm_live_migration_plugin_init()
377 - C/C++: sg_vm_live_migration_plugin_init()
378 - Java: Msg.liveMigrationInit()
379 For C and C++, "simgrid/plugins/live_migration.h" also has to be
383 - Define class simgrid::xbt::Path to manage file names.
384 - Removed unused functions:
385 - xbt/file.h: xbt_basename(), xbt_dirname(), xbt_getline()
386 - xbt/graph.h: xbt_graph_edge_get_length(), xbt_graph_edge_set_length,
387 xbt_graph_export_graphviz()
388 - xbt/str.h: xbt_str_join()
389 - Remove unused datatypes:
390 - xbt/heap.h: use std::priority_queue or boost::heap instead
391 - xbt/swag.h: use boost::intrusive::list instead
394 - New link_energy plugin for the consumption of the links.
395 - All of the operations on files and storage contents have been
396 packaged into a plugin (src/plugins/file_system). The current
397 public interface can be found in
398 include/simgrid/plugins/file_system.h
399 To use these functions you now have to initialize the plugin by
400 calling MSG_storage_file_system_init() just after calling
401 MSG_init() or sg_storage_file_system_init() just after creating
405 - Remove the undocumented/untested tag <include>
408 - Remove viva specific tracing as the tool is no longer maintained
411 - #248: Kill of finished processes leads to segfault
412 - #240: xbt_cond_wait_timeout should gracefully return for C apps
413 - #239: please implement signal s4u::onDeadlock()
414 - #230: segfaults when exit() without run()
415 - #225: s4u::Actor::kill() doesn not really kill victims in a join()
416 - #223: MSG_task_get_flops_amount() not working with parallel tasks
417 - #222: Actor::kill() doesn't really kill and segfaults
418 - #221: odd LMM warning when killing an actor
419 - #120: Memory leak when the processes are forcefully killed
421 ----------------------------------------------------------------------------
423 SimGrid (3.17) Released October 8 2017
425 The Drained Leaks release: (almost) no known leaks despite the tests.
427 Even very long simulations will preserve your memory: our testsuite
428 stresses SimGrid for over 45mn on fast machines for a coverage of
429 over 80%, and there is only one single known leak, of about 4kb.
433 - Comm.detach(): start and forget about asynchronous emission. A cleanup
434 handler may be given to free resources if the comm cannot be completed.
435 - this_actor::send(mailbox) is now mailbox->put()
436 - New: simgrid::s4u::Comm::wait_all()
437 - New: Host.execute() for remote executions.
440 - Unused option network/sender-gap is removed.
443 - Deprecate MSG_task_isend_with_matching(): This unused feature
444 really complicates our internals. Will be removed in v3.20.
447 - Improved context termination. It is now possible to free resources, even
448 when a process is forcibly killed.
449 - ContextBoost: add support for Boost versions above 1.61.
452 - Bring back run-time option --cfg=exception/cutpath to remove exception
454 - Removed unused functions:
455 - xbt/str.h: xbt_str_split_str(), xbt_str_subst(), xbt_str_ltrim(),
456 xbt_str_rtrim(), xbt_str_trim().
457 - xbt/xbt_os_thread.h: xbt_os_thread_cancel(), xbt_os_thread_detach().
460 - Removed header files obsolete since SimGrid 3.12:
461 msg/datatypes.h, msg/msg.h, simdag/datatypes.h, simdag/simdag.h.
463 - #3: SD_exit should be made optional
464 - #120: Memory leak when the processes are forcefully killed
465 - #159: Threading test regression in Actor refcounting
466 - #170: simgrid::s4u::Comm::wait_any() returns too many comms
467 - #185: simgrid::s4u::Engine::instance()->shutdown() segfaults
468 - #186: Actor::killAll() segfaults if some process is blocked on wait()
469 - #191: VM migration and pstate
470 - #192: Updating the energy consumptions of all hosts crashes with VMs
471 - #195: All actors have PID=0 in the logs
472 - #204: Sometimes segfault with thread contexts and mmap privatization
473 - #222: Actor::kill() doesn't really kill and segfaults
474 - #225: Actor::kill() doesn't really kill when victims are doing a join()
476 ----------------------------------------------------------------------------
478 SimGrid (3.16) Released June 22. 2017.
480 The Blooming Spring Release: developments are budding.
483 - FreeBSD: Disable SMPI mmap privatization, switch automatically to dlopen.
484 - Mac, BSD: dlopen+thread broken, switch automatically to raw contexts.
485 - Java JAR file should be finally fully working on Mac OSX too.
487 XML platforms: Switch to platform v4.1 format.
488 * This is (mainly) a backward compatible change: v4 are valid v4.1 files
489 - <zone> can be used as a synonym for the now deprecated <as>
490 - <zoneRoute> can be used as a synonym for the now deprecated <asroute>
491 - <bypassZoneRoute> an be used as a synonym for the now deprecated <bypassAsRoute>
492 - <actor> can be used as a synonym for the now deprecated <process>
493 - state_file and avail_file periodicity is now easier to express
494 (check the documentation) the old behavior should still work.
495 * Storage: not backward compatible, but it seems that nobody ever used it
496 - Remove attribute 'content_type' of <storage_type>: was never used
497 - Make attribute 'model' of <storage_type> optional: for future usage
498 - Remove Bconnection model property: was never (in)validated. Replaced by
499 the maximum of the read and write bandwidth as a resource constraint.
502 - New and Backwards Compatibility break:
503 SD_simulate_with_update (double how_long, xbt_dynar_t changed_tasks_dynar)
504 When one wants to get the list of tasks whose states have changed during a
505 simulation round, s/he has to allocate and free a dynar and use it as
506 argument to this function. The former SD_simulate (double how_long)
510 - Allow multicore VMs, with the correct sharing (unless you overcommit)
511 BUG: vCPU overcommitting still leads to buggy sharing, though. WIP.
514 - New function to update the consumption of all hosts at once.
515 - Fix the model for multi-core hosts, linear in the amount of busy
516 cores with an abnormality for pIdle (see paper).
517 BUG: Still not satisfactory for ptask on mono-cores.
520 - The netzone are now available from the MSG API.
521 The old names still work, but are now deprecated.
524 - New algorithm to privatize globals: dlopen, with dynamic loading tricks
525 - New option: smpi/keep-temps to not cleanup temp files
526 - New option: smpi/shared-malloc-blocksize . Relevant only when global shared
527 mallocs mode is used, allows to change the size of the fake file used
528 (default 1MB), to potentially limit the number of mappings for large runs.
529 - Support for sparse privatized malloc with SMPI_PARTIAL_SHARED_MALLOC()
530 - Fortran ifort and flang compilers support
531 - New RMA calls supported (experimental):
532 - MPI_Win_allocate, MPI_Win_create_dynamic, MPI_Win_attach
533 - MPI_Win_detach, MPI_Win_set_info, MPI_Win_get_info
534 - MPI_Win_lock_all, MPI_Win_unlock_all, MPI_Win_flush
535 - MPI_Win_flush_local, MPI_Win_flush_all, MPI_Win_flush_local_all
536 - MPI_Op_commutative, MPI_Fetch_and_Op, MPI_Compare_and_swap
537 - MPI_Rput, MPI_Rget, MPI_Raccumulate, MPI_Rget_accumulate
540 - New: this_actor::isMaestro() returns whether we are in kernel mode.
541 - Behind the scene, ActivityImpl are now automatically refcounted.
542 Removing this nasty bottleneck will greatly simplify our internals.
545 - Replay: New function xbt_replay_action_get():
546 Retrieve the function previously associated to an event type.
547 - DROPPED FUNCTION: xbt_str_varsubst()
548 - DROPPED MODULE: strbuff. We don't need it anymore.
549 - DROPPED MODULE: matrix. We don't need it anymore.
550 - DROPPED MODULE: lib. We don't need it anymore.
552 -- Thu Jun 22 22:48:12 CEST 2017 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
554 SimGrid (3.15) Released March 22. 2017
556 The Spring Release: continuous integration servers become green
557 We fixed even the transient bugs on all target architectures:
558 Linux (CentOS, Debian, Ubuntu, Fedora), Mac OSX (Mavericks, El Capitan)
559 Windows, FreeBSD, NetBSD.
561 - Rename NetCards to NetPoints.
562 This was intended to help NS3 users, but that's not a netcard.
563 That's a point in the routing algorithm, let's avoid wrong simplifications.
566 - New: MSG_process_yield(). Stop and yield to other processes.
567 - New: MSG_process_daemon(). Daemon processes are automatically killed
568 when the last non-daemon process terminates
569 - New: MSG_process_ref/unref(). Fiddle with the process refcounting.
570 - Renamed MSG_energy_plugin_init() -> MSG_host_energy_plugin_init()
571 to make room for the upcoming network energy plugin.
572 - Drop MSG_host_get_current_power_peak: duplicates MSG_host_get_speed
575 - Ensure that an actor can kill itself with Process::exit()
576 - Kill the obscure NativeException. Nobody want to survive the issues
577 it denotes, so use JniException that is a RuntimeException (not to
578 be caught explicitly).
579 - Partial bug fix in initialization. SimGrid flags on command line were
580 consumed at C level but stayed in the original Java String[] args.
581 This could mess users' args[i] if SG flags were not put at the end of
583 The SimGrid flags are now removed from the Java arguments. However,
584 the number of arguments REMAINS UNCHANGED. It is then UNSAFE to test
585 if args.length is greater than the number of YOUR OWN ARGUMENTS.
586 It might be if you have --log or --cfg flags in the command line.
587 - Fix numerous memleaks all around the place. In particular, around VMs.
591 - s4u::onPlatformCreated: right before the simulation starts
592 - s4u::onSimulationEnd: right after the main simulation loop
593 - s4u::onTimeAdvance: right after a clock change (time is discrete)
594 - s4u::Host::onSpeedChange: when the pstate is changed, or when an
595 event from the availability_file changes the avail speed.
596 - Links are now usable from s4u
597 - New: Engine::hostList() and Engine::hostCount(). Still clumsy.
598 - New: Actor::suspend(), Actor::resume(), and Actor::migrate(new_host)
599 - New examples: The conversion of MSG examples to S4U has begun
600 - Actors: create, kill, migration, and suspend
601 - Applications: master-worker and token-ring
602 - Action replay: communications and storage
603 - Drop Host::getPstateSpeedCurrent() which duplicates Host::speed()
606 - Backwards Compatibility breaks
607 - The SD_route_get_list and SD_route_get_size functions have been removed.
608 They are replaced by the unique
609 void sg_host_route(sg_host_t src, sg_host_t dst, xbt_dynar_t links)
610 The route from src to dst is built in the links dynar whose size can
611 be obtained with xbt_dynar_length.
612 - The SD_route_bandwidth and SD_route_latency functions have been replaced by
613 sg_host_route_bandwidth and sg_host_route_latency.
614 Macros ensure the backwards compatibility, but you should fix your code
617 - Major C++ rewrite ongoing (SMPI used to be C compiled in C++).
618 This can break codes using SMPI internals (from private.h instead of the public smpi.h).
619 - Bump our claim of support from MPI 1.1 to MPI 2.2.
620 We don't support 100% of it, but it should be enough. Contact us if not.
621 - MPI_Win_lock/unlock, MPI_Get_accumulate support added (as for all RMA, implementation is
622 naive and probably inaccurate)
623 - New algorithm for SMPI_SHARED_MALLOC: global, where all blocks are
624 mapped onto a unique small file using some system magic.
625 - Bugfix: smpirun was sometimes misusing hostfile when wrongly terminated
626 - Fortran: cleanups, fixes, support of user-added operations
627 - RMA: MPI_Accumulate are applied in correct order.
628 - RMA: MPI_Win_{complete/post} shouldn't miss messages anymore.
629 - Better support for MPI_IN_PLACE
630 - Support for MPI_Win attrs and keyvals.
631 - Support MPI_Comm_group_create, MPI_Type_size_x
632 - MPI ops should be properly applied to all allowed types
633 - Replace implementation of MPI_Bcast "scatter followed by rdb allgather"
634 algorithm by a non failing one from mpich.
637 - Kill the fifo data container: we don't use it anymore.
640 - A <cluster> can now be created with different speed values to represent pstates.
641 see examples/platforms/energy_cluster.xml for an example.
643 SimGrid (3.14.159) Released December 28. 2016
645 The previous release was only a crude approximation of a Pi release;
646 this one should be a bit better.
648 - Revert a last minute change that broke on Mac OSX.
649 - Fix the changelog and NEWS files.
650 - Improve the documentation, in particular of the routing module.
651 - Integrate some patches flying around in Debian.
653 SimGrid (3.14) Released December 24. 2016
656 * The whole documentation was reworked and reorganized. There is
657 still much room for improvement here, but we're on it.
660 * We now need python3 for our testing infrastructure.
661 * Model checking needs libevent
664 * Now works on FreeBSD
667 * Privatization now works on FreeBSD
669 * Privatization is now activated by default in smpirun
670 You can turn it off with -no-privatize if something goes wrong.
672 * Call-location tracing for SMPI.
673 You can add the exact location (filename / linenumber) of an MPI call to
674 your trace files and slow down or speed up the simulation between two
675 consecutive calls by using an adjustment file (see the documentation).
677 * Fixed computation of timings for MPI_Send, MPI_Recv & possibly also others
678 We've found a bug that prevented SMPI to account for MPI_Send, MPI_Recv
679 and others (in some cases) in a correct way. That is, the smpi/os, smpi/or
680 values were ignored in some cases. The timings of these functions can now
681 be significantly different.
683 * smpi/cpu-threshold:-1 should become smpi/simulate-computation:no
684 smpi/running-power is renamed to smpi/host-speed
686 * smpi/grow-injected-times option to enable or disable multiplication of the
687 timings injected in MPI_Iprobe, or MPI_Test. Enabled by default, which can
688 make simulation less precise (but also much faster).
690 * smpirun script should be (much) faster for large deployments.
692 * SMPI tracing: fixed issue with poor matching of send/receives.
694 * Replay: Fix broken waitall
696 New functions and features
697 * MSG_parallel_task_execute_with_timeout, to timeout computations.
699 Dropped / renamed functions and features
700 * msg_mailbox_t and associated functions. Use s4u::Mailbox instead.
701 - MSG_mailbox_is_empty() -> Mailbox::empty()
702 - MSG_mailbox_front() -> Mailbox::front()
703 - MSG_mailbox_get_by_alias() -> simgrid::s4u::Mailbox::byName(name)
704 - MSG_mailbox_get_task_ext() -> MSG_task_receive_ext()
705 - MSG_mailbox_get_task_ext_bounded -> MSG_task_receive_ext_bounded
706 - MSG_host_(get/set)_params -> MSG_vm_(get/set)_params
707 * Don't pass the free_f parameter to property related functions:
708 - MSG_host_set_property_value()
709 - MSG_as_router_set_property_value()
710 - MSG_storage_set_property_value()
711 * VM properties. Since msg_vm_t are msg_host_t, just use
712 MSG_host_get_property_value() and friends
713 * VM I/O related things:
714 - Ignored parameter of vm_create: core_nb, disk_path and disk_size.
715 - Unimplemented save/restore methods
716 * MSG_as_router_get_property_value() was redundant with
717 MSG_environment_as_get_property_value().
718 - Removed MSG_as_router_*propert*() functions
719 - Added MSG_environment_as_set_property_value() for consistency
720 * xbt heterogeneous dictionnaries (created with xbt_dict_new()).
721 Well, they are still there for now, but deprecated with a warning.
722 Please switch to xbt_dict_new_homogeneous() before this is removed
724 * Task affinity. Its intended behavior (that was very badly tested
725 and probably not really working) was deceiving what most users
726 would have hoped here.
727 * xbt_os_sem_get_value: unused internally, deprecated on OS X El Capitan
728 * Option network/coordinates is now useless and should be dropped.
731 * Added option storage/max_file_descriptors to allow more than 1024 files opened
734 * Added option maxmin/concurrency_limit to allow more than 100 processes per host
735 * Added Dragonfly topology support
738 * Add Exa- and Peta- units such as EiB, EB, Eib, Eb for size, and
739 EiBps, EBps, Eibps, Ebps for bandwidth.
740 They may become useful to some lucky ones.
743 * New functions: msg.Comm.waitAll() and msg.Comm.waitAny()
744 * ex/app_tokenring: new example, very similar to the MSG Token Ring
745 * ex/async_waitAll: new example, on asynchronous communications
748 * Memory usage should be decreased for simulations with a large number
749 of processes. This also helps for SMPI.
751 SimGrid (3.13) stable; urgency=low
753 The Half Release, a.k.a. the Zealous Easter Trim.
755 - We removed half of the lines, that were mostly experimental cruft.
756 v3.12 lasted 286000 lines of code, v3.13 is only 142000 lines
757 (not counting blanks and comments -- according to openhub.net)
758 - The internals are now compiled in C++ (and will soon be clean C++)
759 - We removed 75 klines of XML, 12 klines of Java, 5 klines of cmake,
760 59 klines of C, etc. We added only 29 klines of C++ in replacement.
762 * Backwards Compatibility breaks
763 - Removed Lua simulation bindings (switch to C or Java for that).
764 Lua can still be used to describe platforms
765 - Removed Java kernel plug-ins.
766 Will be reintroduced after the ongoing major internals reorg.
768 - the following functions were removed.
769 They were too specific and should be reimplemented in a generic
770 way, with filter function.
771 - MSG_task_listen_from_host
772 - MSG_mailbox_get_count_host_waiting_tasks
773 - MSG_mailbox_put_with_timeout was removed.
774 Please use MSG_task_send_with_timeout instead.
776 - the SD_application_reinit function was removed. It has been a noop for a while.
777 - The ACCESS_MODE of SD_workstation has been removed. This feature was not really usable and should soon be
778 replaced by a more flexible mechanism.
779 - The following functions thus do not exist anymore
780 - SD_workstation_get_access_mode
781 - SD_workstation_set_access_mode
782 - SD_workstation_get_current_task
783 - Basic estimation functions have been removed but can easily be replaced
784 - SD_route_get_communication_time => SG_route_get_latency() + amount / SD_route_get_bandwidth()
785 - SD_workstation_get_computation_time => amount / sg_host_speed()
787 - VM.setBound(int load) is now VM.setBound(double bound) to meet the MSG semantics.
788 Use VM.getSpeed()*load/100 for the legacy behavior.
790 - option enable_tracing was removed. It was not doing anything for a while.
791 - In the ModelChecker:
792 - the model-checker now ptraces the model-checked process which means
793 you cannot use a debugger on the latter anymore (we might make this
794 optional in the feature);
795 - removed soft-dirty page tracking;
796 - remove model-checked side snapshot management,
797 MC_snapshot() and MC_compare_snapshot();
798 - keep the MC_cut() function as a stub (it was not really working
799 in the previous release).
802 * All options are consistently in kebab-case. Old names are kept as alias.
805 * Switch to platform v4 format.
806 - Rename from 'power' to 'speed' the attributes describing the amount of
807 flops that a <host>, <peer>, <cluster> or <cabinet> can deliver per second.
808 - In <trace_connect>, attribute kind="POWER" is now kind="SPEED".
809 - In <host> and <link>, attributes availability and state are gone.
810 It was redundant with state and availability traces, and with peak values.
811 - In <cluster>, attributes availability_file and state_file are gone.
812 It was too complex and unused.
813 - Kill <gpu>. Was not doing anything.
814 - The DOCTYPE points to the right URL:
815 http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd
816 (the file at this address now documents the changelog since its v1)
817 - A warning is emitted for unit-less values (they are still accepted).
818 - speed. Default: 'f' or 'flops'. Also defined:
819 'Yf', 'Zf', 'Ef', 'Pf', 'Tf', 'Gf', 'Mf', 'kf'
820 'yottaflops', 'zettaflops', 'exaflops', 'petaflops', 'teraflops', 'gigaflops', 'megaflops', 'kiloflops'
821 - bandwidth. Default: 'Bps' bytes per second (or 'bps' for bits but 1 Bps = 8 bps)
822 Also defined in bytes: 'TiBps', 'GiBps', 'MiBps', 'KiBps', 'TBps', 'GBps', 'MBps', 'kBps', 'Bps'
823 And the same in bits: 'Tibps', 'Gibps', 'Mibps', 'Kibps', 'Tbps', 'Gbps', 'Mbps', 'kbps', 'bps'
824 - latency. Default: 's' second. Also defined:
825 'w' week, 'd' day, 'h' hour, 'm' minute, 'ms' millisecond, 'us' microsecond, 'ns' nanosecond, 'ps' picosecond
827 * bin/simgrid_update_xml can upgrade your files automatically (won't convert unit-less values)
828 tools/sg_xml_unit_converter.py may help (but it's just a warning and will probably ever be).
831 * s4u::Host is now the preferred public interface to the Host features.
832 sg_host_* functions are C bindings to the exact same behavior
833 MSG_host_* and SD_workstation_* are #define to the sg_host_* ones
836 * The examples were completely reorganized (in C and Java), for your browsing pleasure.
837 * Kill all deprecated functions (the ones you had when declaring MSG_DEPRECATED).
838 They were deprecated since a few years, and probably did not even compile anymore.
841 * The API has been profoundly modified to directly use the core objects instead of redefining its own.
842 SD_Workstation_t and SD_link_t are now sg_host_t and sg_link_t respectively.
843 Some functions have also been renamed for consistency. Backward compatibility is maintained, but users are
844 encouraged to update their codes. A list of the modified functions can be found at the end of
845 include/simgrid/simdag.h
848 * simgrid::simix::kernelImmediate() is the closure callback. It ensures that
849 the lambda or closure passed as a parameter will run in kernel mode.
850 All the callback functions should be rewritten to that interface at some point.
853 * Reorganizing and cleaning the internals all around the place.
856 * Remove old default barrier/bcast buggy algorithms (see #18407)
857 * Various bug fixes to handle more codes
858 * Remove the need for the --foreground option of smpirun (it is still
859 accepted for backward compatibility).
862 * Kill the setset data container: MC don't use it anymore.
863 * Kill the queue data container: it made more sense with GRAS.
864 * Kill the xbt_peer_t data type: it's useless without GRAS.
865 * Kill rm_cb feature of config sets: it was never useful.
866 * Kill graphxml parsing feature. It was not used.
867 * Kill the deprecated code protected by XBT_USE_DEPRECATED
869 - xbt_dynar_sort_strings(), when the content is char*
870 - xbt_str_parse_int / xbt_str_parse_double, wrapping strtol/strtod
871 They throw exceptions on invalid input;
872 * C++ support for declaring CLI flags (simgrid::config::Flag);
873 * class for abstracting different signal backends (simgrid::xbt::signal).
874 with no external dependencies (we need very simple signals).
877 * refactoring and cleanup of the code;
878 * ongoing process to cleanly separate the model-checking algorithms
879 from the code model-checking support.
881 -- Wed Apr 27 21:00:53 CEST 2016 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
883 SimGrid (3.12) stable; urgency=low
885 The Facelift Release.
888 * Require g++ v4.7 at least to not speak prehistorical C++.
889 * Require Boost 1.48 (for signal2 component).
890 * Java must be version 7 at least when activated.
891 * Builds on Windows again (including Java bindings).
892 * Tracing is now always enabled (no way to turn it out)
893 * Remove GTNetS. It was not working anyway.
894 * Various cleanups in the cmake scripts.
895 * Move headers around to sort them out on installed systems:
896 - instr/instr.h -> simgrid/instr.h
897 - instr/jedule/* -> simgrid/jedule
898 - simdag/datatypes.h was removed
899 - simdag/simdag.h -> simgrid/simdag.h
900 - msg/datatypes.h was removed
901 - msg/msg.h -> simgrid/msg.h
904 * Interface improvement:
905 - Rename MSG_host_is_avail(h) to MSG_host_is_on(h)
906 - Sanitize the interface in MSG_task_ module:
907 - Merge two functions that were close enough but misleading:
908 set_compute_duration(t) -> set_flops_amount(t)
909 get_remaining_computation(t) -> get_flops_amount(t)
910 - set_data_size(t) -> set_bytes_amount(t)
911 get_data_size(t) -> get_bytes_amount(t)
912 - Massive cleanups in the functions related to the energy
913 - MSG_host_get_pstate_number() -> MSG_host_get_nb_pstates()
914 - New: MSG_host_get_pstate()
916 - msg/energy/onoff: switching hosts on and off
918 * Interface improvement:
919 - Rename Host.isAvail() to Host.isOn()
920 - Rename Process.currentProcess() to Process.getCurrentProcess()
921 - Rename Task.setDataSize() to Task.setBytesAmount()
922 - Merge Task.getRemainingDuration() and Task.getComputeDuration() into Task.getFlopsAmount()
924 - #18874: Actually allows the GC to reclaim tasks
928 - SIMIX_process_throw: raises an exception in a remote process
929 * Refactoring: Separate sub-modules
930 - libsmx: the public interface, as libc in a real system
931 - popping: the strange dance that converts a user request into a kernel handling
932 - smx_context_*: the virtualization mechanisms that embed the user code
933 - smx_*: the handling of each simcalls
935 - simcall_host_set_power_peak_at -> simcall_host_set_pstate
936 * Rename smx_action_t into smx_synchro_t, making explicit that these
937 things are used to synchronize processes with their environment.
938 For example, a communication is a sort of synchronization involving
939 the communicating processes (that may block until the exchange) and
940 the platform. The same can be said from computations, etc.
942 - #18888: segfault when a process ends before its kill_time
946 - 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.
947 - MPI_Keyval*, MPI_Attr* functions, as well as MPI_Comm_attr*, MPI_Type_attr* variants (C only, no Fortran support yet)
948 - MPI_Type_set_name, MPI_Type_get_name
949 - MPI_*_c2f and MPI_*_f2c functions
950 - MPI_Info_* functions (beware, get_nthkey may not follow the insertion order)
951 - MPI_Pack, MPI_Unpack and MPI_Pack_size functions
952 - Activate a lot of new tests from the mpich 3 testsuite
954 - Constant times can be injected inside MPI_Wtime and MPI_Test through options smpi/wtime and smpi/test
955 - InfiniBand network model added: Based on the works of Jerome Vienne
956 http://mescal.imag.fr/membres/jean-marc.vincent/index.html/PhD/Vienne.pdf
957 - When smpi/display_timing is set, also display global simulation time and application times
958 - Have smpirun, smpicc and friends display the simgrid git hash version on --git-version
959 * Collective communications
960 - 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
961 - 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/).
962 - Support for Rabenseifner Reduce/Allreduce algorithms (https://fs.hlrs.de/projects/par/mpi//myreduce.html)
964 - Replay now uses algorithms from wanted collective selector
965 - Replay can be used with SMP-aware algorithms
966 - Memory occupation of replay should now be contained (temporary buffers allocated in collective algorithms should be shared between processes)
967 - 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.
969 - [#17799]: have mpi_group_range_incl and mpi_group_range_excl better test some corner cases
970 - Correctly use loopback on fat-tree clusters
971 - Asynchronous small messages shouldn't trigger deadlocks anymore
972 * Energy/DVFS cleanup and improvement
973 - smpi_set_host_power_peak_at() -> smpi_set_host_pstate()
974 - new: smpi_get_host_pstate()
977 - "Full" network optimization flag was broken since Surf++
978 - Better handling of precision flags in maxmin
979 - Fix bug causing sometimes "Impossible" errors
980 - Properly pass cluster properties to included hosts
981 * Improvement of the Energy plugin.
982 - Always update the consumption before returning that value
983 - New property: watt_off to denote the dissipation when the host is off
984 - New functions getWattMinAt and getWattMaxAt to retrieve the
985 dissipation of pstates that we are not currently at.
986 * Java: class NetworkLink renamed to Link
987 * New function: simcall_process_get_kill_time()
988 * Massive rename s/workstation/host/
989 - That's intrusive, but that's good for the project consistency. Sorry.
990 - Change config option "workstation/model" into "host/model"
993 - Add a xbt_heap_update function, to avoid costly xbt_heap_remove+xbt_heap_insert use
994 - Add a xbt wrapper for simcall_mutex_trylock (asked in [#17878])
995 - Add two new log appenders: rollfile and splitfile. Patch by Fabien Chaix.
996 - xbt_dirname and xbt_basename for non-POSIX systems
998 * The model checker now runs as a separate process.
999 * The model checker runs must now be launched with the new simgrid-mc program.
1000 * Record/Replay: the MC can display a textual representation of a path in the
1001 execution graph. It can then be replayed outside of the model checker.
1003 -- Mon Oct 12 06:02:41 CEST 2015 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1005 SimGrid (3.11) stable; urgency=low
1010 * Normalizing pointers addresses tool for better diff between logs
1013 * Add cloud examples using new VMs
1014 - examples/msg/cloud/two_tasks_vm.tesh
1015 - examples/msg/cloud/simple_vm.tesh
1016 - examples/java/cloud/cloud.tesh
1017 - examples/java/cloud/migration/migration.tesh
1018 * Add java surf examples:
1019 - examples/java/surfPlugin/surf_plugin.tesh
1020 - examples/java/reservationSurfPlugin/reservation_surf_plugin.tes
1021 - examples/java/surfCpuModel/surf_cpu_model.tesh
1022 * Add SMPI+MSG example:
1023 - examples/smpi/smpi_msg_masterslave/
1028 - msg task destroy cancel test
1029 - msg_host on/off test
1030 * Move all tests in testsuite to teshsuite (adding tesh files)
1031 * Restructure teshsuites
1032 - one folder for each kind of test
1033 * Restructure AddTests.cmake
1035 - structure the order of tests (with sections)
1038 * Add virtual machine
1039 - creation of a VM on a PM
1040 - migration of a VM from a PM to another PM
1042 - MSG_process_join(msg_process_t process, double timeout)
1043 - msg_bar_t MSG_barrier_init(unsigned int count)
1044 - int MSG_barrier_wait(msg_bar_t barrier)
1045 - void MSG_barrier_destroy(msg_bar_t barrier)
1046 - msg_as_t MSG_environment_as_get_by_name(const char * name)
1047 * New option "msg/debug_multiple_use" to help debugging when a task is used
1050 - Improvements and finalization of MSG_storage, MSG_file APIs and their
1052 - Increase code coverage in test suites
1056 * Protect context stacks against stack overflow. The number of protected memory
1057 pages allocated on the top of each stack (1 by default) can be configured
1058 with the new command line option --cfg=contexts/guard_size:<value>.
1059 * Simcalls are now generated by a python script that
1060 - generates files included by SimGrid
1061 - checks that all the functions exist, and proposes prototypes
1063 - remove sem_destroy, file_set_data, comm_destroy, vm_set_state,
1064 host_set_data, host_get_data
1066 - simcall_process_join(smx_process_t process, double timeout)
1067 * Fix bug where sleeping processing could not be suspended.
1070 * Translate surf models from C to C++
1071 - Generic classes for all models: Model, Resource, Action
1072 - A generic interface for each kind of model (CPU, Network, Storage
1073 Workstation, WorkstationVM)
1075 * Translate surf routings from C to C++
1076 * Add callbacks using sigc++ or boost::signals2
1077 - Add callback functions for resource creation/destruction
1078 - Add callback functions for action state change
1079 - Handle Energy as a plugin
1080 * Replace swag by boost::intrusive
1081 * Add new routing models for clusters. For documentation, see
1082 http://simgrid.gforge.inria.fr/simgrid/latest/doc/platform.html#pf_cluster
1083 - tori, with topology="TORUS" and topo_parameters="ndim1,ndim2,...,ndimn"
1084 parameters for cluster tag
1085 - Fat trees, with topology="FAT_TREE" and
1086 topo_parameters="h;m1,...,mh;w1,...,wh;p1,...,ph" parameters for cluster tag
1087 - see examples/platforms/torus_cluster.xml and
1088 examples/platforms/fat_tree_cluster.xml
1089 * More documentation
1092 * Hostfiles support host:nb_processes construct to deploy several processes on
1094 * Collective communication algorithms should not crash if used with
1095 improper number of nodes and report the error.
1096 * SMPI now partially supports MPI_Topologies: MPI_Cart_create, MPI_Cart_shift,
1097 MPI_Cart_rank, MPI_Cart_get, MPI_Cart_coords, MPI_Cartdim_get,
1098 MPI_Dims_create, MPI_Cart_sub are supported.
1099 * New interface to use SMPI programmatically (still depends on MSG for
1100 some parts, see examples/smpi/smpi_msg_masterslave):
1101 - SMPI_app_instance_register(const char *name, xbt_main_func_t code,
1105 * Global variables privatization in MPI executables is now performed at runtime
1106 with the option smpi/privatize_global_variables (default:no).
1107 Limitations: Linux/BSD only, with mmap enabled. Global variables inside
1108 dynamic libraries loaded by the application are not privatized (static
1109 linking with these libraries is advised in this case)
1112 * Options defined in XML work correctly now.
1115 * New cmake option, enable_lib_in_jar, to control whether native libraries are
1116 copied into simgrid.jar or not (ON by default). Use this option if you want
1117 to reduce the size of the installed simgrid.jar, *and* the native libraries
1118 are kept installed elsewhere.
1119 * Surf binding with SWIG (code generated in maintainer mode only):
1120 - plugin to handle callbacks
1121 - CPU model only for the moment
1124 * Supernovae build mode is definitively removed. It was used to improve
1125 inlining and inter-module optimizations. It is nowadays superseded by
1126 link-time optimizations commonly available in compilers.
1127 * Update ns-3 find lib. Bindings for ns-3 should work again now.
1128 * Add boost dependency for surf++
1129 * Add new macro for tests
1130 - ADD_TESH(name <tesh_args>)
1131 - ADD_TESH_FACTORIES(name "thread;ucontext;raw" <tesh_args>)
1135 - xbt_bar_t XBT_barrier_init(unsigned int count)
1136 - int XBT_barrier_wait(xbt_bar_t barrier)
1137 - void XBT_barrier_destroy(xbt_bar_t barrier)
1138 * Make the xbt_os_time module public
1140 -- Sat May 31 22:39:38 CEST 2014 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1142 SimGrid (3.10) stable; urgency=low
1144 The Clean Diaper Release, a.k.a. SimGrid is leak-free.
1147 * Reintegrate Java to the main archive as desynchronizing these
1148 package is not acceptable anymore (Java is now considered stable)
1149 * Add explicit synchronization facilities through semaphores
1150 * Bug fix: Task.setDataSize() only changed the C world, not the value
1151 cached in the Java world
1154 * Dramatically change the way files are handled. API and internals changed, but
1155 this part of MSG was not considered as production grade either.
1156 * Add explicit synchronization facilities through semaphores
1157 * Add a new function MSG_host_get_process_list()
1158 * Preliminary DVFS support (see examples/msg/energy/ for details)
1161 * SMPI is now included directly in the libsimgrid as the windows
1162 linker doesn't force us on splitting it anymore.
1163 * Improvements of the SMPI replay tool:
1164 - Most of the collective communications are now rooted in the same process as
1165 in the original application.
1166 - Traces now rely on the same MPI data type as the application (MPI_BYTE was
1167 used until now). Multiple data types can now be used in a trace.
1168 - The replay tool now supports traces produce either by TAU or a modified
1170 - Bug Fix: the compute part of the reduce action is now taken into account.
1171 - Gatherv collective is now supported
1172 - SimGrid (SMPI for now) can generate replay traces as well. Option -trace-ti
1173 of smpirun outputs time independent traces for the current run. One file
1174 is created per process. If too many processes are simulated, this behavior
1175 can be changed to one file for all processes by using the
1176 tracing/smpi/format/ti_one_file flag
1177 * smpirun generates the host file if needed (with given host count and platform)
1178 * Integration of more than 100 STAR-MPI, MPICH, OpenMPI collective algorithms
1179 - allows to select one in particular with --cfg=smpi/coll_name:algorithm
1180 - allows to use the decision logic of OpenMPI(1.7) or MPICH(3.0.4) by setting
1181 --cfg=smpi/coll_selector:(mpich/ompi)
1182 * Support for new functions: MPI_Issend, MPI_Ssend, Commutative operations in
1184 * Add a --cfg:tracing/smpi/internals option, to trace internal communications
1185 happening inside a collective SMPI call.
1186 * Fix the behavior of complex data types handling.
1187 * Make MPI_Wtime another synchronization point to take computations into
1189 * Replace MPICH-1 test suite by the one from MPICH 3.0.4. Can be built using
1190 enable_smpi_MPICH3_testsuite flag in cmake. Run with ctest.
1191 * Add all missing Fortran bindings, SMPI should work with Fortran 90
1192 (no privatization of global variables yet)
1193 * Preliminary DVFS support (see examples/smpi/energy/ for details)
1196 * Verification of liveness properties is now available for SMPI applications
1197 (in addition to MSG applications)
1198 * Bugged examples using SMPI in examples/smpi/mc/
1199 * Add --cfg=model-check/visited option. Allows the verification of infinite
1200 programs. Detection of loops in the execution thanks to the system state
1201 comparison and reduction of the state space to explore. Can be combined with
1202 DPOR for safety properties.
1205 * Allow to change SimGrid configuration (see --help) within the code
1206 thanks to SD_config() as it can be done in MSG.
1207 * Add a new function SD_task_set_amount() upon user request.
1210 * Handle units for values (10ms, 10kiloflops, 10Bps, 1GB, ...)
1211 * Remove rule based routing (no more PCRE dependency)
1212 * Add a limiter_link option to cluster tag, to specify a maximum reachable
1213 bandwidth in fullduplex mode when it is less than twice the nominal bandwidth.
1214 * Add a loopback_bw and loopback_lat options to cluster tag.
1215 * Fix the peer tag that could not be mixed with other AS within a Vivaldi
1216 routing. Now peers are encapsulated in an AS and have their own private
1217 router but this is transparent.
1220 * Our own implementation of getline is renamed xbt_getline, and gets
1221 used even if the OS provide a getline(). This should reduce the
1222 configuration complexity by using the same code on all platforms.
1223 * New type: xbt_cfg_elm_boolean.
1224 * Allow to use yes/no for boolean configuration options in the command line.
1225 * Allow to disable SimGrid cleanups at exit from command line option.
1226 There are situations where one may want a simulation to end with an exit.
1227 Unfortunately, calling exit may cause SimGrid to segfault, which is quite
1228 annoying when scripting around the simulator. Adding a
1229 --cfg=clean_atexit:no allows to circumvent this issue.
1232 * Lots of memory leaks were corrected in this release.
1233 There is no known memory leaks anymore, in all of our 600+ tests.
1234 * New command line option --version, to get SimGrid version information.
1235 Packagers may want to add extra words to SIMGRID_VERSION_EXTRA defined in
1237 * Supernovae builds are deprecated, and expected to be removed in the next
1240 -- Sun Nov 17 00:26:44 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1242 SimGrid (3.9) stable; urgency=low
1244 The Grasgory release: GRAS is really dead now.
1246 * Complete overhaul of the internal host structures scheme.
1249 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
1250 was considered as experimental and badly maintained since then.
1251 * Keeping it was thus a trap to our potential users, that could take
1252 it instead of MSG or SMPI by mistake despite is pity state.
1253 * GRAS seems to have very few users (if any), and no one volunteered
1254 to maintain it further. It also induces a lot of XBT code (for
1255 portability sake), that must be maintained too.
1256 * For all these reasons, we killed GRAS. If someone wants to revive it
1257 in the future, don't cry, our git history still remembers of GRAS.
1260 * Major overhaul. Merge our documentation again as time proved that
1261 splitting it was really not helping our users.
1262 * Further improve the developer documentation to help newcomers
1263 hacking on SimGrid itself. The user documentation (and in
1264 particular, the beginner documentation) is still in a sorry state.
1267 * Now works on Windows too!
1268 * Much more extensive test suite, from MPICH
1271 * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
1272 (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
1273 dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
1274 * Bug fix: let task be scheduled when the last dependency to be solved is
1275 a control dependency.
1276 * Remove SD_load_environment_script function.
1277 Use the C sg_platf function if you want to declare a platform
1281 * New function: MSG_process_get_number()
1282 * Old function documented: MSG_config()
1283 * Remove MSG_load_platform_script function
1284 Use the C sg_platf function if you want to declare a platform
1288 * Change the default value of the TCP_gamma constant (maximal size of TCP
1289 congestion window) to a more realistic 4MiB value. If you notice changes in
1290 your simulation results, you can fall back to the previous 20k tiny window
1291 by adding --cfg=network/TCP_gamma:20000 on command line.
1292 * (Hopefully) fix a bug wrt periodic availability and state traces
1293 * Bug fix: use default values at start when first event in availability/state
1294 trace is not at time 0.
1297 * remove the "new_" part of function name sg_platf_new_trace_connect
1298 (resulting in sg_platf_trace_connect), since it does not create
1302 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
1303 use case where it's really mandatory, and maintaining it was a pain in
1305 * New: xbt_fifo_search(), search an item with a user-provided
1306 comparison function instead of dumb pointer comparison.
1309 * Fix the lua deployment:
1310 Use `simgrid.init_application()` before deployment instead of
1311 `simgrid.msg_register_application()` after.
1314 * Transfer the tracing files into the corresponding modules.
1316 -- Tue Feb 5 11:31:43 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1318 SimGrid (3.8.1) stable; urgency=low
1320 The "we are told that some people want to also *install* the simgrid
1323 * Add missing file "tesh.1" to the archive.
1325 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1327 SimGrid (3.8) stable; urgency=low
1329 The Psssshiiiit release: SimGrid jumps into the Cloud.
1332 * Add an experimental interface to manipulate VMs. They are mainly
1333 process groups with very few intrinsic semantic, but they should
1334 allow you to build the semantic you want easily.
1335 * New function: MSG_host_set_property_value()
1336 * New function: MSG_process_on_exit(). To clean memory in all cases.
1337 * Bug fixes that made the host (and link) failures unusable.
1338 * Add a way to auto-restart process when the host in which they are
1339 executing comes back (ON_FAILURE="RESTART" on deployment file,
1340 MSG_process_auto_restart_set).
1341 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
1342 please stop using the old ones, they are DEPRECATED.
1344 * Deprecate functions MSG_global_init() / MSG_global_init_args()
1345 Please use MSG_init() instead. (reducing the amount of entry
1346 points in the library helps us).
1347 * Make it impossible to link against the wrong version of the lib
1348 * Deprecate MSG_clean(). No need to call it anymore.
1349 * Function MSG_get_host_number() is not deprecated anymore.
1352 * Split the doc into a user guide and a reference guide.
1353 * Start a developper guide to help people hacking on SimGrid.
1356 * Enable tracing by default. This modules rocks you should use it.
1357 * Remove option custom_flags. Now use environment variables CFLAGS
1359 * Use default cmake things to detect lua instead of home grown ones.
1360 * New option "enable_mallocators" to disable mallocators, for debugging
1361 purpose ("on" by default).
1364 * Bug fixes around the resource failures: don't let the processes
1365 survive the host they are running onto.
1366 * Add an interface to auto-restart processes when the host in which they are
1367 executing comes back.
1368 * Ensures that SIMIX_clean is called automatically. It's not part of
1369 the public interface anymore (bindings should be updated).
1372 * Bug fix for when SD_Simulate is called with a positive value: be careful
1373 when comparing doubles. Sometimes they are different for non significant
1375 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
1376 parallel task whose initial work is distributed among host according
1377 to the Amdahl's law. Such tasks are created with a parameter alpha
1378 that corresponds to the non-parallelizable part of the computation.
1379 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
1380 between two sets of workstations assuming a 1D block distribution (each
1381 workstation owns a similar share of data) on both sides.
1383 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
1384 Data redistribution will be automatically scheduled once parent and child
1385 are both scheduled. The filling of computation_amount and
1386 communication_amount structures is now done seamlessly thanks to the chosen
1388 * New function SD_workstation_dump to display various information
1389 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
1390 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
1391 bandwidth on the route onto which the task is scheduled and the amount of
1393 To divide the nominal bandwidth by 2, the rate then has to be:
1394 rate = bandwidth/(2*amount)
1395 * Compute tasks that have failed can now be rescheduled and executed again
1396 (from their beginning)
1397 * Increasing source code coverage (src/simdag is now covered at 95.8%
1401 * Re-implement time-independent trace replay using SMPI (at the
1402 smpi_smp_* level) instead of MSG. This should replace
1403 examples/msg/actions/actions.c
1404 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
1405 hindexed and structs)
1406 * Implement the exchange of non-contiguous data.
1407 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
1408 * Correct behavior of smpi/sender_gap and set its default value to 0
1409 * Add option to asynchronously send small messages to allow better
1410 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
1411 specifies the size in bytes under which messages will be asynchronously sent.
1412 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
1413 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
1416 * New C interface to define a platform: XML is now optional.
1417 For more info, please check include/simgrid/platf.h.
1418 * New interface to define random platforms from the C:
1419 For more info, please check include/simgrid/platf_generator.h and
1420 examples/msg/masterslave/masterslave_platfgen.c
1421 * Export a sg_cmdline dynar containing all the arguments we got from
1425 * Two new tracing options for adding comments to trace file so you
1426 can track your experiments (see --help-tracing for details).
1427 * New option to generate a impoverished trace file (--cfg=tracing/basic:1)
1428 * Adding the SimGrid version that generated the trace file as a comment.
1429 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
1430 * Fix to avoid key clashes on Paje links
1431 * Other minor fixes related to the Paje specification
1434 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
1435 and renamed to xbt_str_hash() and xbt_str_hash_ext().
1436 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
1437 * Greatly improve the robustness of mmalloc to user errors (such as
1438 using an area after freeing it, or freeing it twice)
1440 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1442 SimGrid-java (3.8.1) stable; urgency=low
1444 * New module: org.simgrid.trace.Trace (SimGrid trace bindings)
1445 Warning: all methods are visible, but only some of them are
1446 implemented so far. Check the source (src/jtrace.c)
1447 for further information.
1448 * New module: org.simgrid.msg.File (SimGrid File management functions)
1449 * New Module: org.simgrid.msg.VM (SimGrid interface to mimick IAAS clouds)
1450 * Change the meaning of Process.restart: now restart the process from
1451 the begining, like MSG_process_restart in C.
1452 * Add Process.setAutoRestart: handling of process restart when failed
1454 * Add Process.getProperty, Host.getProperty, Host.getProperty: allows
1455 you to retrieve the properties of the processes/hosts
1456 * Deprecate Msg.clean(): you can just forget about it now.
1457 * New function Process.getCount(), that only works when compiling
1458 with the not yet released version 3.9 of the C library.
1460 * New context factory based on Coroutines. It mandates a modified JVM
1461 but then, the simulations run about five times faster, and there is
1462 no limit to the amount of processes (beside of the available memory).
1464 -- 2012-12-04 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1466 SimGrid (3.7.1) stable; urgency=low
1469 * Restore the prototype of MSG_process_create_with_environment() to
1470 the pre-3.7 situation by removing the kill_time argument.
1471 * Add a MSG_process_set_kill_time() function instead.
1474 * Fix weird behaviors when dealing with parallel tasks.
1477 * Simgrid is now built as a dll.
1478 * Simgrid-java now works on Windows.
1479 * Simgrid-Java is now included into Windows package.
1482 * First pre-build package for MacOSX.
1485 * Fix compilation when using MSG_USE_DEPRECATED.
1486 * Fix some compilation issues on Macs and Windows.
1487 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
1488 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
1490 We discovered that the Lua console is broken, but we are missing the
1491 manpower to fix it right now. The problem existed in 3.7 too, so we
1492 are not blocking the release for that. Sorry if you depended on this
1493 feature, any help would be really welcome.
1495 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1498 SimGrid-java (3.7.1) stable; urgency=low
1500 The "Java aint got to be bloated and slow" release
1503 * Various internal cleanups and performance improvement
1504 Simulations are expected to run up to twice faster or so
1505 * Make Process.kill(process) an instance method, not a static one
1506 * User processes are not java.lang.Thread subclasses.
1507 This breaks the compatibility (sorry), but previous API was
1508 brain-dead, making it impossible to have non-trivial
1509 initializations in the process constructor.
1510 * Require a full constructor per Process sub-class.
1511 Kinda breaks the compatibility (sorry), but this allows a much more
1512 efficient way to launch the processes at simulation startup.
1513 * Do not embeed our version of semaphores, java 1.5 can be considered
1514 as sufficiently prevalent for us to not dupplicate its features.
1518 * Add examples for almost every part of the API
1519 We spotted and fixed a lot of bugs in the process
1521 * New module: asynchronous communication API
1522 * New function: Process.sleep()
1523 It takes milliseconds as argument, just as java.lang.Thread.sleep()
1524 * New module: org.simgrid.msg.Mutex (SimGrid mutexes)
1525 * New module: org.simgrid.msg.RngStream (RngStreams random generators)
1527 -- 2012-06-12 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1529 SimGrid (3.7) stable; urgency=low
1531 The "spring cleanups (before the next Big Project kicks in)" release.
1534 * We can specify the SMPI latency/bandwidth factor with command line
1535 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
1536 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
1537 You can also use the "config tag" from platform file by adding this line
1538 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
1539 (see "example/platforms/tag_config.xml" to use "config tag").
1540 Note that the command line supersedes the platform file configuration.
1541 * Change the correction factors used in LMM model, according to
1542 the latest experiments described in INRIA RR-7821.
1543 Accuracy should be improved this way.
1544 * Use the partial invalidation optimization by default for the
1545 network too. Should produce the exact same results, only faster.
1546 * Major cleanup in surf to merge models and split some optimization
1547 mechanisms from the core of the models. As a result you can now
1548 specify which model to use (e.g., --cfg=network/model:LV08
1549 --cfg=cpu/model:Cas01) and which optimization mode to use
1550 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
1551 Incompatible combinations should err at initialization. See
1552 --help-models for the list of all models and optimization modes.
1553 * The CLM03 workstation model was dropped for simplicity because it
1554 used the deprecated CM02 network model. Use default instead.
1555 * Rename the TCP_gamma configuration option to network/TCP_gamma
1556 * Rename the coordinates configuration option to
1557 network/coordinates, and document it
1558 * Use now crosstraffic keyword instead of the terribly misleading
1559 fullduplex keyword. It is activated by default now in the current
1560 default model, use --cfg=network/crosstraffic:0 to turn it off.
1561 * Ongoing refactoring the model parsing to make XML files optional
1562 See include/simgrid/platf.h for details (still to be completed)
1565 * Major overhaul of the documentation. Almost instructive now :/
1566 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
1567 functions and friends. This interface was considered as
1568 deprecated since over 2 years, it's time to inform our users that it is.
1569 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
1570 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
1571 use these (crappy) functions in your code.
1572 These functions will be removed soon. Stop using them now.
1573 * Deprecate MSG_get_host_{table,number}
1574 Implement MSG_hosts_as_dynar() instead.
1575 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
1576 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
1579 * Stabilize the parallel execution mode of user contexts
1580 * Introduce configuration variables to control parallel execution:
1581 - contexts/synchro: Synchronization mode to use when running
1582 contexts in parallel (either futex, posix or busy_wait)
1583 - contexts/parallel_threshold: Minimal number of user contexts
1584 that must be part of a scheduling round to switch to parallel
1585 execution mode (raw contexts only)
1586 * Fix bugs that prevented to use suspend/resume along with
1587 synchronization structures.
1588 * Fix bugs in process termination that lead to invalid memory access
1589 in very specific conditions.
1592 * Introduce a parallel mode for the models (controlled by surf/nthreads
1593 configuration item). In our tests, running the models in parallel
1594 never lead to any speedups because they are so fast that the gain
1595 of computing each model in parallel does not amortizes the
1596 synchronization costs, even when ultra fast futexes are used.
1597 This is released anyway because YMMV.
1600 * Performance boost by using a swag internally to compute the set of
1601 tasks that are finished and should constitute the return value of
1605 * Enable it by default now that it is considered rather stable.
1608 * Documentation of the tracing functions.
1609 * Performance gains when tracing categorized/uncategorized resource
1610 utilization by avoiding calls to get route when updating resource
1611 variables. LMM constraints are being used instead.
1612 * API changed to set task categories. Use MSG_task_set_category instead
1613 of TRACE_msg_set_task_category, and SD_task_set_category instead
1614 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
1615 * Bugfix for graphicator, routes not correctly obtained, memory leaks
1616 * Examples for link user variables added (see at examples/msg/tracing/)
1617 * Deprecated function TRACE_msg_set_process_category completely removed
1618 * Trace header updated according to the latest Paje file format
1619 * Tracing network lazy updates, no longer obligate users to use full updates
1620 * --cfg=tracing/platform:1 also registers power/bandwidth variables
1621 * Experimental: let user code declare/set/push/pop application states for hosts
1622 * API changed to allow the manual creation of graph configuration files
1623 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
1626 * Improve the API of Lua MSG bindings, using the Lua spirit.
1627 * Each simulated process now lives in its own Lua world (globals are
1628 automatically duplicated). It helps writing simulators. Will allow
1629 to run Splay programs within SimGrid in the future.
1630 * Add a Chord example in Lua, equivalent to the MSG one.
1633 * Start the implementation of a solution to express temporal
1634 properties, not only local assertions. This is still an
1635 experimental work in progress, stay clear from it to be safe.
1639 - Add new runtime parameters --help-logs and --help-log-categories
1640 to display information about supported logging parameters and
1642 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
1643 don't exists anymore.
1644 * Mallocators: allow value NULL for the reset function.
1646 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
1647 create homogeneous dictionaries, where all the elements share the
1648 same free function. Non homogeneous dictionaries will be
1649 deprecated in the next release.
1650 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
1651 - Multi-level dictionaries are deprecated.
1653 - new function xbt_dynar_search_or_negative() that is useful when
1654 you have less than 2 million elements in your dynar and don't
1655 want of the extra complexity of catching exceptions when the
1656 element is not found.
1658 - Make xbt_os_thread module (for thread portability) public.
1659 Documentation is still to come, sorry.
1661 - Cleanups and simplifications to make it maintainable again.
1662 - Exotic features (such as memalign and valloc) were removed.
1663 - The metadata were extended and improved so that the
1664 model-checker becomes able to explore and inspect the heaps.
1665 - This may induce a performance drop when enable_model-checking is
1666 ON in cmake (even if it's not used in the simulation), but it is
1667 necessary at this point to get MC working.
1669 Turn model-checking OFF if simulation performance matters to you.
1670 Not enabling it at runtime is not enough, disable it in cmake.
1672 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1675 SimGrid (3.6.2) stable; urgency=low
1677 The "Not coding new stuff allows to polish old things" release.
1680 * New bindings to the NS3 packet level simulator (experimental)
1681 * Use the raw (efficient) execution contexts instead of the sysv
1682 (portable) ones when possible.
1683 * libpcre is now mandatory in any cases since not using it led to
1684 severe performance loss and possibly other issues
1685 * Update the XML platforms:
1686 - G5K: include the latest machine in Nancy
1687 - GridPP and LCG: new platforms
1688 * Documentation was partially updated, at least (more to come)
1690 Bug fixes, cosmetics and small improvements
1691 * Free terminated processes before the end of the simulation to avoid
1692 exhausting the memory of users having very dynamic amount of
1694 * Bug fix and cosmetics about canceling non-running tasks
1695 * Bug fix about the dot loader's issues when using libcgraph
1698 * Create an installer for windows with nsis (amd64 and win32)
1699 - Add an hello world project to illustrate simgrid project creation.
1700 - Embed libpcre into the Simgrid installer to avoid
1701 its compilation burden
1702 * The raw execution contexts should work on Apple now
1703 * Port to Windows 64 bits
1704 - Sysv contexts now have an implementation for this arch
1705 - GRAS communication features now support this arch
1706 * Drop support for borland compiler on windows
1707 - this code was not maintained, and we kinda depend on gcc nowadays
1708 * Fix portability issues on kfreebsd/gnu: build error about semaphores
1709 * Fix portability issue on unstable ubuntu: linker became picky on
1712 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1714 SimGrid (3.6.1) stable; urgency=low
1716 The "Oops, we broke Macs too" release
1719 * Fixed contexts detection so that raw ones are used when possible
1720 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
1721 leads to a strange error, with user code segfaulting sometimes when
1722 the generated code is not perfectly aligned (which is not
1723 controllable from the user side, depends on the amount of code)
1726 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
1728 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1730 SimGrid-java (3.6) unstable; urgency=low
1733 * Split of every thing from simgrid v3.5 into a separate package.
1735 -- 2011-10-05 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1737 SimGrid (3.6) stable; urgency=medium
1739 The Summer Release, also known as the "OMG! They Killed Kenny!" version
1742 * Bindings now constitute their own package, separated from the main one.
1743 Rationale: reduce our maintenance nightmare by reducing the module coupling
1744 They will soon be released on their own on gforge.
1746 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
1747 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
1749 GRAS: It is not considered as stable anymore, but experimental. Sorry.
1750 * It's not quite deprecated for now because we have no replacement,
1751 but it may soon become the case.
1754 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
1755 * Fortran: New user-level cache variable to store the rank of the running
1756 process. This improves performance by an order of magnitude.
1757 * C: New coccinelle script to automatically locate and modify global and
1758 local static variables.
1759 * Improved SMPI network model with a sender-side gap to account for multiple
1763 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
1764 only say if a communication is finished, no matter whether it succeeded or
1765 failed. You can call MSG_comm_get_status() to know the status of a finished
1767 * New function MSG_task_dsend() to send a task and detach it. When a
1768 communication is detached, you are never notified of its success or failure
1769 and the memory is released automatically once it is finished. This function
1770 is useful when you don't care about the end nor the success of a
1772 * Change the prototypes of action replay. Sorry for inconvenience,
1773 but this is really more efficient this way (and to adapt your code,
1774 you just have to fix the initialization, that shouldn't be too long)
1775 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
1776 ever managed to do anything useful with it.
1777 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
1778 takes a dynar of communications. It returns immediately and gives the
1779 index of a finished communication (if any).
1780 * New example: a basic implementation of the Chord P2P algorithm.
1783 * New model for multi-core CPUs. You can now use the core attribute to
1784 precise the number of cores of a host. This is a basic model. Every
1785 process running on the host receives at most the power provided in
1786 the DTD (throughput<=power). Total throughput of process cannot exceed
1788 * New peer tag. This peer tag creates a tiny AS comprising a host and a
1789 router linked by an up-link and a down-link (possibly asymmetrical).
1790 This kind of pattern allows to easily build last-mile model style platforms.
1791 Aggregating such patterns in a rule-based AS is thus the technique of
1792 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
1793 * New model for Vivaldi routing. We transformed the Vivaldi network model
1794 into a Vivaldi routing model (based on the rule-based model). This allows to
1795 combine Vivaldi based latencies with last-mile platforms.
1798 * Added a check for NaN of IEEE754 infinite in the double entries of
1800 * Introduce a new context factory "raw", highly inspirated from the
1801 ucontext factory, but using manually crafted functions in assembly to
1802 do the work in an efficient manner.
1803 * Allow to change the used context factory at run time, not only at
1804 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
1805 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
1806 contexts at runtime (only with raw contexts or ucontexts).
1807 * Completely rewrote this module to allow parallel execution of user
1808 processes. Use --cfg=contexts/nthreads:N to execute user processes
1809 with N parallel threads (the default is 1, meaning no parallelism).
1810 * Allow to decide dynamically between sequential and parallel modes.
1811 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
1812 processes in parallel only when their number is greater than or equal to P
1814 * Added a check for NaN of IEEE754 infinite in the double entries of
1818 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
1819 won't output the state of processes when interrupted with Ctrl-C
1820 * Add a new function xbt_dynar_to_array that transforms a dynar into a
1821 NULL-terminated array. This may solve backward compatibility issues
1822 due to the change to return type of SD_simulate. See also:
1823 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
1824 * Add new macros with variable number of arguments.
1825 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
1826 - in xbt/asserts.h: xbt_assert
1827 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
1828 - in xbt/ex.h: THROWF and RETHROWF.
1829 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
1831 * Change xbt_die() to accept a format string with arguments, just like printf.
1832 * New data structure: xbt_lib_t, like a dict but more general and with better
1836 * New configuration options
1837 Options triva/categorized and triva/uncategorized can be used to generate
1838 graph configuration files for Triva visualization tool.
1839 * Configuration option tracing/platform is renamed to tracing/categorized
1840 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
1841 * New TRACE_user_link_variable interface:
1842 User provides the name of the link and the tracing variable to attach to it
1843 * the declaration of tracing categories must be done after the environment
1845 * simpler tracing interface, just one way to declare categories
1846 TRACE_category or TRACE_category_with_color, it is up to you
1847 * links in the trace file are again identified by their names
1848 * trace contains the full platform hierarchy exactly as declared using the ASes
1849 * Options tracing/msg/[task|process]:1 groups the process by hosts
1850 for both cases, tasks and processes must have names that are unique during the simulation
1851 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
1852 * The experimental option tracing/msg/volume is deprecated
1853 its functionality may be reincorporated if needed
1855 The tracing generates a trace file with unordered timestamped events,
1856 because of the way the core simulator (surf) works. A script available
1857 at the tools directory (fix-paje-trace.sh) can be used to put the events
1858 in order. We have changed the tracing so it can generate ordered timestamped
1859 events in the final trace, but depending on the simulator (and how much time
1860 is simulated) that can lead to a huge memory utilization. It is deactivated
1861 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
1863 Build Infrastructure
1864 * Define a SIMGRID_VERSION macro in simgrid_config.h.
1865 - We are trying hard to keep the API stable, but it may happen that
1866 some things change (we're a research project after all, not a
1867 nuclear plant operating system). If such things should happen, you
1868 could rely on that macro to adapt.
1869 - current value: 30600 for 3.06.00, aka 3.6
1870 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
1871 a number that can be compared with SIMGRID_VERSION.
1872 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
1873 assertions and verbose/debug logging events are disabled at compile time.
1875 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1877 SimGrid (3.5) stable; urgency=medium
1880 * New feature to any SimGrid-based simulator: Model-Checking
1881 Check SIN#1 for more details.
1884 * New Model SMPI (three-interval linear regression for correction factors)
1885 See RR-7426, available at http://hal.inria.fr/inria-00527150
1886 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
1887 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
1888 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
1889 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
1890 * See also src/smpi/README
1895 - Tracing API changes: TRACE_start and TRACE_end should not be called
1896 by user-code. They are automatically called by simulators created
1897 with SimDAG, MSG and SMPI if the toolkit is compiled with
1898 tracing_enabled=ON. Categories declaration and utilization remain the
1899 same for MSG and SimDag.
1900 - A function was added to the tracing API to declare categories with
1902 - TRACE_category_with_color (char *category, char *color)
1903 where color must be in the following format
1904 "%f %f %f", red, green, blue
1905 and red, green, blue are float values in the interval [0, 1]
1906 - User can specify NULL as color parameter, or continue calling
1907 TRACE_category (cat)
1908 On that case, the tracing system will define random colors
1909 - The following command-line options are supported:
1910 --cfg=tracing/filename:msg.trace
1911 --cfg=tracing:1 (activate tracing, needed to use others)
1912 --cfg=tracing/platform:1 (categorized resource use)
1913 --cfg=tracing/uncategorized:1 (uncategorized resource use)
1914 --cfg=tracing/msg/task:1 (task creation)
1915 --cfg=tracing/msg/process:1 (process creation, migration)
1916 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
1917 --cfg=tracing/smpi:1 (SMPI interface tracing)
1918 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
1919 - examples of examples/msg/tracing updated
1921 - DAXLoader and DOTLoader functions can generate tasks with categories
1922 - A new function to attribute a category to SD tasks:
1923 TRACE_sd_set_task_category (SD_task_t task, char *category)
1924 * Tracing the MPI interface implemented by SMPI
1925 - Collective operations are traced with states
1926 - Point-to-Point operations are traced with states/links
1927 - Tracing activated by a parameter "-trace filename" passed
1928 to smpirun during execution (considering that simgrid
1929 is compiled with tracing enabled)
1930 - To run the simulation with gdb, the simulator
1931 accepts --cfg=tracing/smpi:1 to trace SMPI
1932 - tesh files to check if smpi tracing is ok
1933 - See examples/smpi/NAS/DT-trace
1934 * GTNetS tracing re-worked
1935 - adaptation to the tracing system of GTNets to cope
1936 with modifications regarding the fullduplex mode
1937 - new tesh files to check if gtnets tracing is ok
1940 * Asynchronous communications through the functions:
1941 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
1942 * New function: MSG_load_platform_script()
1943 to make possible using a lua script instead of XML files to set up platforms
1944 * New function: MSG_set_function
1945 to associate functions to processes, used when bypassing the parser
1946 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
1948 Platforms: Add some more examples in examples/platforms
1949 * Grid'5000: see www.grid5000.fr
1950 * *_30000_hosts.xml: various huge files [mainly scalability testing]
1953 * Change the XML format. This is a very important modification. SimGrid
1954 3.5 introduces a new hierarchical format based on the notion of
1955 Autonomous Systems. Compatibility with old format is ensured
1956 through the perl script provided in the install bin directory
1957 bin/simgrid_update_xml.
1958 It is now possible to build platforms with specific routing
1959 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
1960 connect several platforms together. We will try to provide soon
1961 set of realistic platforms exploiting these properties (have a
1962 look at examples/platforms/ for the moment).
1963 * Take the opportunity of the XML format change to be a good XML citizen:
1964 rename link:ctn to link_ctn and similar changes (also dealt with by
1966 * Add a new routing scheme (rule-based) using regular expressions. It
1967 enables to have an extremely low memory footprint when the
1968 underlying routing is simple and can be compactly described. You
1969 need to have libpcre4-dev (perl regular expressions) installed if
1970 you want to use this routing scheme.
1971 * Revive the cluster TAG and allow to easily and efficiently (both in
1972 term of memory and speed) connect clusters together. Have a look
1973 at teshsuite/simdag/platforms/ to see how this can be done. With
1974 this tag, you can create clusters with thousands of tasks at no
1975 cost (have a look at examples/platforms/).
1976 Note: clusters are implemented as ASes, so there is no need for an
1977 enclosing AS tag if you have only one cluster in your platform.
1978 * Add new generic functions in the public interface that allows the user
1979 to call SURF 'create_resource' methods from your code (same
1980 functionality as the XML bypass mechanism but with a much lighter
1982 * Add a new model (enabled through command line --cfg=network/model:SMPI)
1983 that uses a piecewise linear approximation to produce better
1984 results when exchanging small messages.
1985 * Add a new parameter to handle correctly full duplex link and account
1986 for interferences between uplink and downlink communications
1987 (activate with --cfg=fullduplex:1).
1990 * Rename the SD_READY (all dependencies are satisfied and task is
1991 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
1992 dependencies are satisfied) state.
1993 This prevents a confusion between the notion of "ready to schedule"
1994 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
1995 simulated" (SD_RUNNABLE) used by the simulation kernel.
1996 * Change the way a task is considered as ready. Instead of removing
1997 dependencies when a task is done, a counter is decreased. This way,
1998 it is always possible to reach ancestors thanks to the
1999 SD_taks_get_parents function (even after the end of the simulation.)
2000 * Change the return type of SD_Simulate from (SD_task_t*) into
2001 xbt_dynar_t. This function was in handling a dynar internally and
2002 converted it into a NULL terminated array for historical reasons.
2003 * New function SD_dotload(char*) to load a DAG described in dot
2004 format. This loader and the corresponding examples require the
2005 installation of the graphviz library.
2006 * Fix a bug in the management of tasks of size 0 in the surf network
2007 models. This problem was only visible with SIMDAG and you should
2008 thus disregard results produced with earlier versions if you
2009 relied on this feature (some tasks were blocked because of this).
2010 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
2011 even though your applications were doing only point-to-point
2012 communications and sequential computations. Now you can really use any
2013 model you want (of course, if you create real parallel tasks, which are
2014 not implemented in most models beside ptaskL07, this will abort).
2015 * Add an example that schedules a DAX on an heterogeneous platform
2016 using a Min-Min strategy.
2017 * New function SD_workstation_get_current_task() that returns the kind
2018 of task currently running on a workstation in the sequential access
2020 * Raise some warnings when unexecuted tasks remains at the end of the
2021 simulation. This is usually caused by cycles in the DAG.
2024 * New function: SIMIX_process_set_function() called by MSG_set_function
2025 * Change the underlying waiting queue in semaphores so that a process
2026 can wait on several of them simultaneously (as in waitany).
2027 * Fix the way to handle tokens in semaphores so that all access patterns
2028 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
2029 * kill the dirty pimple SIMIX_message_sizes_output()
2030 Please use (proper) visualization instead
2033 * New data container: setset (set of sets of elements)
2034 * New module: mmalloc (mapped malloc, allowing to have several
2035 independent segments of malloc)
2036 * New function: xbt_dict_cursor_set_data()
2037 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
2038 * New function: xbt_dynar_is_empty()
2039 * New function: xbt_fifo_get_last_item()
2040 * Fix xbt_dynar_shrink(): use the right element size.
2041 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
2042 uninitialized areas during expand.
2043 * Fix semaphores: previous implementation was severely broken.
2044 * Use library init/fini functions for our initialization.
2045 - you can use logs and other feature as soon as you want in your
2046 code (even before the xbt_init / MSG_init)
2047 - xbt_exit is now a no-op and produce a warning when used.
2050 * Port GRAS to new SIMIX mechanisms. This allows gras users to
2051 benefit from the latest improvement to the simulation kernel.
2052 * Kill measurement sockets for now. If you rely on them, sorry. This
2053 release is not for you. This feature will be reintroduced in the
2054 future, but we cannot delay the release any further.
2055 * New function: gras_msgtype_get_name().
2056 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
2057 * Fix (at last) the pmm example: it should not randomly fail anymore.
2059 Build chain: bug fixes and overall polishing
2060 * Cmake is now stable enough. Hence, we killed the autotools.
2061 * Port to windows ( TM :)
2062 * Fix the 'make install' target.
2063 No need to use 'make install-simgrid' anymore
2064 * Introduce a 'make dist' target compiling a *source* archive
2065 'make package' compiles a binary archive
2066 * Compile java files only on need
2067 * Add --cd and --setenv command line options to tesh
2068 * Out of source builds are not fully supported yet, but we are close
2069 * Enable supernovae and optimization flags by default for our users
2072 * Add layer to set up environment directly from lua, without XML.
2073 * The effect of gras_stub_generator can be achieved through
2074 lua too (check examples/gras/console/ping_generator.lua)
2076 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2078 SimGrid (3.4.1) stable; urgency=low
2080 The "Polishing easter eggs is probably a good idea" release.
2081 This is a bug fixes release only.
2085 * Fix a bug preventing the tasks from begin garbage collected.
2088 * Fix a bug occuring when a host involved in a communication fails.
2089 This was not detected properly by the other peer involved in the
2090 communication. Now, it's reported as a network error.
2093 * Warn the user about loop dependencies in data flow of DAX files
2094 * Obey the control-flow dependencies of DAX files
2097 * Add option "enable_smpi" allowing to not compile SMPI.
2098 Probably useful for the (Mac) users experiencing a build error here
2099 * Improve the detection of lua5.1 and ruby1.8
2101 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
2103 SimGrid (3.4) stable; urgency=low
2105 The "Easter in Cargese" release. Also known as (major changes):
2107 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
2108 ~> bindings were greatly improved
2109 ~> new tracing infrastructure for better visualization introduced
2111 * the "Welcome to configury modernity" release.
2112 ~> we switched from autotools to cmake, and improved our cdash
2115 A more detailled list of changes follow (full detail in svn log).
2117 Java Bindings: Various Cleanups
2118 * (install java-gcj-compat-dev on debian-like to use them)
2119 * Remove put/get: no need to export deprecated interface in Java
2120 Use send/receive instead.
2121 * Cleanup the examples and add a README per directory
2122 * Remove example autoDestination (that's the only way to go now)
2123 * Remove example explicitDestination (was a plain copy of basic)
2124 * Make JniException a runtime exception, so that there is no need to
2125 declare the fact that you may encounter such a beast. I guess that
2126 nobody will ever want to survive such error.
2127 * Create specific errors for each MSG case of failure:
2128 host failure, transfer failure, timeout, task cancelled
2129 * Cleanup the exceptions that may get thrown by each function
2130 * Other internal cleanups in Java bindings. Performance still bad :/
2131 Ruby and Lua Bindings: create them
2132 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
2133 * That's new and great, you should try them out.
2134 Same functionalities than Java bindings, only even less polished
2136 * Kill the useless "rate" argument of SD_task_get_execution_time()
2137 Everyone used to provide -1 as a value, it was not used, and the
2138 semantic of a possible use wasn't even clear.
2139 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
2140 either as comm costs or compute costs to mean that there is no
2141 such thing for that specific task.
2142 * Add a SD_task_set_name() function
2143 * Fix SD_task_unschedule() on typed tasks
2144 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
2145 * In DAX loader, accept useless 'level' attributes to <job> since
2146 LIGO DAGs have them (seem to be to ease graphical representation).
2148 * Add an example masterslave_mailbox.c using send/receive and not
2149 the deprecated put/get interface.
2150 * Kill the MSG_paje_output() function. It's a noop since 2 years.
2151 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
2153 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
2154 (declare MSG_USE_DEPRECATED to still have the old name)
2155 * Add a MSG_task_set_data() function
2156 * About trace replay (see examples/msg/actions):
2158 - Allow to work with splitted trace files for each process
2159 Give the specific trace file as argument of each process,
2160 and call MSG_action_trace_run(NULL)
2161 You can still have one merged file for all processes.
2162 - Fix implementation of collective operations
2163 * Allow task_execute() on 0-sized tasks (closes #10063)
2165 * This is the first release of SimGrid where SMPI is not considered
2166 beta anymore (even if some corners should still be improved)
2167 * Port over the new SIMIX_network submodule (internal refactoring)
2168 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
2169 * Implement more missing elements of the standard:
2171 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
2173 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
2174 MPI_Scan() MPI_Get_processor_name()
2175 - Added implementation of missing case for Alltoall (warning: it's
2176 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
2177 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
2178 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
2179 SMPI_MPI_Allgatherv()
2180 * Bug fixes include:
2181 - MPI_Waitsome() was broken
2182 - Allow relative includes in smpicc
2183 - Command line cfg argument 'reference_speed' was ignored...
2184 - Some functions did not properly lead to auto-benching of user code
2185 - smpicc passes -O2 by default (just like openmpi one)
2187 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
2188 * Bug fixes about timeouts during communications
2189 * add SIMIX_message_sizes_output() as a pimple to write to file the
2190 amount of messages per size. Use gnuplot to get histogram.
2191 Pimple because that's the only user-visible function of simix,
2192 defined directly in xbt.h (irk, sorry)
2194 - Add a SIMIX_sem_get_capacity() function
2195 - Fix interactions with processe resume/suspende
2196 - release_forever() was stupidly broken
2197 - Fix SIMIX_display_process_status() for processes in a semaphore
2198 - Make SIMIX_sem_block_onto() user-visible
2199 * Refactoring context stuff:
2200 - Use pseudo-OOP for better modularity
2201 - reimplement SIMIX_process_kill() without process_schedule() so
2202 that the latter can take as invariant that it is called from
2204 - Merge context_start into context_new for sake of simplicity
2206 * Add a Vivaldi network model, coded live during SUD'10 ;)
2207 * Rename configuration variables to start a hierarchy:
2208 o cpu_model -> cpu/model
2209 o network_model -> network/model
2210 o workstation_model -> workstation/model
2211 * New configuration variables:
2212 o network/bandwidth_factor: correction to bandwith
2213 o network/latency_factor: correction to latency
2214 o netwotk/weight_S: correction to the weight of competing streams
2215 * Add a long description to the models, that users can see with such
2216 argument on the command line: --cfg=cpu/model:help
2217 * --help-models display the long description of all known models
2219 * config: add the ability to set a default value after registration
2220 Does not override any previously set value (e.g. from cmd line)
2221 * dict: allow to have integer key and data.
2222 When so, you need to use the following functions
2223 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
2224 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
2225 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
2226 In contrary to regular dicts, the key is not malloced before copy.
2227 Mixing scalar and regular elements in the same dict is not tested
2229 * Allow to use xbt_dynar_shrink() to expend the dynar instead
2230 Tracing for Visualization:
2231 * SimGrid is now instrumented in order to generate a trace file for
2232 visualization analysis: to use it, need to compile SimGrid with the
2233 "tracing" option enabled, and instrument the program using SimGrid with
2234 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
2235 (among other functions).
2236 * The instrumentation only traces the platform utilization for now
2237 * Documentation to use the tracing functions and how to analyze the
2238 traces with the Triva tool is written.
2239 * More information about: SimGrid FAQ (in the section Tracing Simulations
2242 * We moved to cmake as default build system. Autotools support will
2243 be dropped soon. Check the FAQ for more info about how to use it.
2244 * Greatly improved our cdash/ctest interactions
2245 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
2246 * Added memory checking tests with valgrind; lot of memleak fixing.
2247 This may be the first release of simgrid with so few memory issues
2248 * Added code coverage tests.
2249 Our coverage is still improvable, but at least we see it on cdash.
2251 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
2253 SimGrid (3.3.4) stable; urgency=low
2255 The "Desktop Grid needs love too" release (also called Xmas release).
2257 Models improvements:
2258 * Major speedup in the maxmin system solving by using lazy evaluation
2259 Instead of solving completely the maxmin system at each iteration,
2260 only invalidate (and recompute) the modified parts.
2261 This new feature is enabled in default models but you can try to
2262 turn it on with "--cfg:maxmin-selective-update=1" for other models.
2263 * Cas01 IMproved as default CPU model
2264 This CPU model is the same Cas01 model, but it uses the
2265 maxmin-selective-update flag and a heap structure to manage
2266 actions on SURF kernel.
2267 It reduces the complexity to find the next action to finish and,
2268 consequently, it's faster than the old Cas01.
2269 This is the new default CPU model (Cas01).
2270 * Rename the old Cas01 model to Cas01_fullupdate
2271 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
2272 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
2273 * CpuTI (CPU Trace Integration)
2274 A new CPU model whose objective is simulate faster when using
2275 availability trace files.
2276 Instead of using a full featured, over engineered maxmin system for
2277 CPU modeling, this model does the pre-integration of traces files
2278 to calculate the amount of CPU power available, and so, executes
2279 faster than the old CPU models.
2280 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
2281 * Use LV08 as default network model since it gives better accuracy
2282 for small messages and shouldn't change things for big ones.
2283 Use --cfg=network_model:CM02 to get the previous behavior.
2286 ******************************************
2287 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
2288 ******************************************
2289 * The new CPU model may changes simulations!
2290 The point is that events occurring at the exact same timestamp
2291 are not scheduled in the same order with the old and new
2292 version. This may be enough to completely change the execution
2293 of simulations in some cases.
2294 * The new network model will change simulations!
2295 This new model is more realistic than the previous one, so you
2296 should consider redoing your old experiments with this model.
2297 Sorry for the inconvenience.
2300 * Introduce the supernovae compilation mode
2301 When compiled that way, the whole SimGrid (or almost) is put in a
2302 single compilation unit and compiled in one shoot.
2303 This is to help gcc which has difficulties to inline stuff from one
2305 The speedup seem to be above 15%, althrough more tests are needed on
2306 amd64 to confirm that gain.
2309 * Port of MSG's mailbox on top of SIMIX network
2310 The put/get mechanism was greatly simplified on the way.
2313 * New SIMIX network module. Provides:
2314 - Mailbox: rendez-vous mechanism to find with who you want to speak
2315 - Synchronous send/recv: easier and hopefully faster since the
2316 logic is handled in the maestro process directly now
2317 - Asynchronous send/recv: you dreamt of it? It's here now
2318 Too bad that nobody cared enough to propagate the change to MSG.
2319 * Add semaphores as SIMIX synchronization mechanism.
2322 * new function SD_daxload(char*) to load a DAX file
2323 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
2324 * Introduce typed tasks. Specify its kind and cost at creation.
2325 At scheduling, just give where it should be placed, and the cost
2326 for each involved resource is automatically computed.
2327 Existing constructors so far (more to come of course):
2328 - SD_task_create_comm_e2e() for end-to-end communication
2329 - SD_task_create_comp_seq() for sequential computation
2330 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
2331 * new function SD_task_dump() for debuging display
2332 * new function SD_task_dotty(task,FILE*) writing to file the info
2333 about the task in dotty format
2334 * SD_task_dependency_exists() can now cope with having one of its
2335 arguments NULL. If so, it tests whether the other argument has any
2337 * Add getters on list of preceding/following tasks:
2338 SD_task_get_parents(task) and SD_task_get_children(task)
2339 * Add getters on amount of workstations and list:
2340 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
2341 * Add getter on task kind: SD_task_get_kind(task)
2342 * Update the start_time and finish_time of tasks on completion/failure
2343 * Bugfix: Remove task from state swags when destroyed
2346 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
2349 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
2350 dynar with one separate thread per value of the dynar.
2351 * Change the prototype of xbt_thread_create(), sorry.
2352 Added a boolean parameter indicating whether we want to join this
2353 thread (used in SG only for now)
2354 * Implement xbt_thread_join and xbt_thread_yield in SG also.
2357 * GTNetS wrappers should now be usable again (and betterly tested too)
2358 * Fix a major regression from 3.2 where the timeout provided to
2359 MSG_task_put_with_timeout() was used as absolute time before which
2360 the comm should be done.
2361 * Start to fix the <cluster> tag.
2362 - Internal links should be good now (beside of the loopback, which
2363 use the private link instead)
2364 - paths to the external world is still rather broken
2365 - the <route:multi> tag is just broken. Actually that's brain-dead.
2366 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
2367 to make it less stupid
2368 ** Check your platform with teshsuite/simdag/platforms/flatifier **
2369 * Fix a source-level compatibility glitch from 3.2: after defining
2370 MSG_USE_DEPRECATED, you can use the old name
2371 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
2372 * Allow to compile from the SVN with automake 1.11
2373 * Fix some problems when using the "start_time" tag in deployment XMLs.
2374 * Fix #8569: XBT/synchro.h has redundant declarations
2375 * Fix #8563: MSG return values and exceptions
2376 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
2377 * Integrate patch #8636: Obey DESTDIR when installing documentation.
2378 Thanks to Robson Peixoto.
2379 * Fix a vicious bug in dictionaries inducing that some elements were
2380 not freed on xbt_dict_free()
2382 Portability report of this version:
2383 * Main portability targets:
2384 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
2385 on (amd64/i386/ia64)
2386 - mac leopard on i386
2387 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
2388 but nothing critical.
2389 * Other platforms: windows, AIX and others were not tested for this release
2391 Timing report of this version:
2392 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
2393 scenario parameters). From 8h to a few seconds in desktop grid settings.
2394 * Supernovae brings about 25% speedup on i386.
2396 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
2398 SimGrid (3.3.3) stable; urgency=low
2400 The "Need for Speed" release.
2402 The timings done to validate the 3.3.2 were faulty.
2403 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
2405 The problem was a conversion from a manually handled vector to
2406 xbt_dynar_t on the critical path.
2407 xbt_dynar_foreach calls functions, inducing stack management crap.
2409 We inlined these functions and xbt_dynar_foreach is now breath taking.
2410 We also inlined xbt_swag_belong on the way.
2412 Here are some approximate speedup measurements (on master/slaves
2413 simulations lasting between 10s and 20s each):
2414 3.3.1 -> 3.3.2: about same performance
2415 3.3.2 -> 3.3.3: 40% speedup
2416 3.3.1 -> 3.3.3: 40% speedup
2417 3.3.1 with inline patch -> 3.3.3: 30% speedup
2419 Our reading is that the refactoring which occurred in 3.3.2 made us
2420 suffer much more from the xbt_dynar_foreach low performance, but
2421 once we solved this, this refactoring proved to be very performance
2422 effective. From the 40% speedup, somehow, 10% are due to the
2423 inlining and 30% to the refactoring.
2425 That's a pitty that gcc cannot inline functions placed in other files
2426 alone. We have to choose between:
2427 - break the encapsulation (by putting private data structures and
2428 accessors in headers files to help gcc)
2429 - live with low performance
2430 - switch to a decent compiler such as icc (not quite possible).
2432 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
2434 SimGrid (3.3.2) stable; urgency=low
2436 The "Simplicity does not preceed complexity, but follows it" release.
2438 The main contributors of this release were (lexical order):
2439 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
2442 * Extract the routing logic into its own object.
2443 (was dupplicated in network.c and workstation_LV07.c;
2444 Allows to implement other ways of storing that info)
2445 => kill now useless network_card concept
2446 - Use dynar to represent routes (instead of void** + int*)
2447 - kill link_set (use surf_network_model->resource_set instead)
2448 - Add a command-line option to choose the routing schema to use
2449 - Add three new models:
2450 * Floyd (shortest path computed at initialization)
2451 * Dijikstra (shortest path recomputed all the time)
2452 * Cached Dijikstra (shortest path computed on need)
2453 All these models where contributed by Silas De Munck, and are
2454 described in his ICCS09 paper.
2456 * Simplify model declaration
2457 (less redirections, less function to write when defining a model)
2458 - Factorize stuff between models:
2461 surf_model_resource_set(model)
2462 surf_model_resource_by_name(model, name)
2463 - Unify the types of models in s_surf_model_t (using an union)
2464 - Embeed fields of common_public directly into s_surf_model_t
2465 - Rename model methods:
2466 action_free ~> action_unref
2467 action_change_state ~> action_state_set
2468 action_get_state ~> action_state_get
2469 - Change model methods into functions:
2470 (model)->common_public->action_use ~> surf_action_ref
2472 * Implement a generic resource; use it as ancestor to specific ones
2473 (allows to kill duplicated code in models)
2474 Drawback: timer command don't need no name nor properties;
2475 workstation_CLM03 don't need no properties
2476 (but I guess we can live with those few bytes wasted)
2478 * Improve the action object model
2479 - implement a constructor avoiding dupplicated code about field
2480 initialization in generic_action part.
2482 * Kill the SDP model: it has an external dependency, is deprecated
2483 in flavor of modern lmm models, and didn't compile since a while
2486 * Relocation of the context module from XBT to SIMIX.
2487 (the context were decoupled from the simix processes, duplicating a lot of code)
2488 => a lot of code was factorized
2489 - less overhead is introduced during scheduling
2490 - simpler API for the context factory
2491 - the logic for process creation,destruction and manipulation was simplified
2492 * Simplification of the s_smx_process_t data structure.
2493 => accesing the simix level data associated to a process is faster now,
2494 and the code is a lot more readable.
2497 * Implement some more MPI primitives:
2498 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
2499 -implementation: Bcast: flat or 2-ary tree (default),
2500 Barrier: 4-ary tree,
2502 Allreduce: Reduce then Bcast
2503 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
2504 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
2505 Alltoallv: flat tree, like ompi
2507 * Add support for optimized collectives (Bcast is now binomial by default)
2508 * Port smpirun and smpicc to OS X
2511 * Kill SD_link_get_properties: hard to maintain and makes very little sense
2512 Shout out if you used it.
2515 * Display the list of still queued messages in SG mode when existing
2519 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
2520 * Add xbt_graph_node_get_outedges() [Silas De Munck]
2521 * Add xbt_str_from_file(FILE*)
2522 * Add xbt_dict_get_key achieving a linear reverse search
2523 * Remove the context module
2525 Portability report of this version:
2526 * Main portability targets:
2527 - Linux(debian)/x86/context
2528 - Linux(debian)/x86/pthreads
2529 - Linux(debian)/amd64/context
2530 - Linux(debian)/amd64/pthreads
2531 On these, we still have the eratic breakages of gras/pmm and
2532 amok/saturate_sg reported in previous version. We still think
2533 that the tests are the cause of the fault, not the tested code.
2535 - Mac OSX Leopard/x86/context
2536 Still false negative in tesh autotesting.
2537 Smpi still fails, but this time because readlink does not accept -f
2538 Everything seems to work properly beside of that.
2541 - AIX version 5.3 (only tested contexts this time)
2542 Smpi still fails there because mktemp is not installed.
2543 Everything seems to work properly beside of that.
2545 I managed to compile it for the first time, but several breakages.
2546 Won't delay the release for this exotic platform.
2548 * Windows: it's still lagging behind. If you want to help, please
2551 Timing report of this version:
2552 This version seem to be more than 5% faster than 3.3.1 (on linux
2553 64bits with contextes). The gain is less than expected, we are
2554 investigating this for next release.
2556 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
2558 SimGrid (3.3.1) stable; urgency=low
2561 * Implement a --cfg-help to show existing configuration variables
2562 * Build chain do not require doxygen in maintainer mode
2565 * fix a bug on struct sizeof computation, which prevented the
2566 exchange of arrays of structs in some conditions
2567 - added a regression test about this in datadesc_usage
2568 * Allow the exchange of 0-long dynamic vectors.
2569 - for that, use -1 as indicator of dynamic size instead of 0
2570 - This implied to change any size from unsigned long to long,
2571 reducing a bit communication abilities, but I guess that with
2572 64bits being quite common, this is more than enough.
2573 - This also induce a protocol change, thus bumping network protocol
2574 version from 0 to 1 (if we have external users, we have to get
2575 clean on that point too ;)
2576 - added two regression tests about this in datadesc_usage
2577 * Be more verbose when propagating local exceptions
2578 This helps debugging.
2579 * Display the status of simulated processes when receiving SIGINT in
2583 * Allow to control the simulation from a trace file.
2584 New functions MSG_action_register() and MSG_action_trace_run()
2585 The first one allows to associate a function execution to each
2586 kind of action while the second one parses a trace file and
2587 triggers the corresponding actions within the system.
2588 For now, only a toy example is provided in examples/msg/actions
2589 * Add an exemple of process migration in examples/msg/migration
2590 * Fix a bug in task exchange which broke MSG_task_get_sender()
2591 Add a teshsuite regression test for that.
2592 [Bug: if MSG_task_get_sender() is called after sender exit,
2594 * Fix a bug which prevented suspend/resume to work properly
2595 * Display the status of simulated processes when receiving SIGINT
2596 This fixes a regression of v3.3. due to the introduction of SIMIX
2597 * Bug fixing in failure management:
2598 - trace could not start by a failure at time 0
2599 - failure during communications were not working
2602 * Add SIMIX_process_set_name() to change the name of the current
2603 process in the log messages.
2604 * Store smx_hosts in a dict since we only retrieve them by name
2605 * Move the configuration infrastructure to surf
2608 * Move the configuration infrastructure to surf
2611 * Massive internal cleanups:
2612 - Store internal structures on processes instead of hosts (allows
2613 to have more than one process per host, in addition of being more
2615 - Cleanup the initialization/finalization process
2616 - Kill a whole bunch of unneeded synchronization:
2617 processes run in exclusive manner within the simulator
2618 - Move queues from global tables to process data fields
2620 - now accept -platform and -hostfile arguments
2621 - Pass the right rank value to processes according to the hostfile
2622 * Compile the examples by default, and use them as regression tests
2623 * Implement MPI_Wtime()
2624 * Change the reference speed to a command line option
2627 * TCP_gamma can now be specified as command line option using
2628 --cfg=TCP_gamma:10000000.0
2629 * Change the --surf-path cmd line option into --cfg=path:
2632 * Also include strbuff from xbt.h public header
2633 * xbt_ex_display(): do not free the exception after displaying
2634 This allows to do more with the given exception afterward.
2635 Users should call xbt_ex_free() themselves.
2639 Portability report of this version:
2640 * Main portability targets:
2641 - Linux(debian)/x86/context
2642 - Linux(debian)/x86/pthreads
2643 - Linux(debian)/amd64/context
2644 - Linux(debian)/amd64/pthreads
2645 These targets fail about 1/10 of times on gras/pmm, but we believe
2646 that this is because of the test, not because of simgrid.
2647 amok/saturate_sg fails even more rarely, and the test may not be
2650 - Mac OSX Leopard/x86/context
2651 The test suite still spits tons of errors because some obscure
2652 force prevents us from removing the temporary directories
2653 arguing that they still contain some metadata I've never heard of.
2654 Smpi fails because seq is not installed.
2655 Everything seems to work properly beside of that.
2658 - AIX version 5.3 (both contexts and pthread)
2659 Smpi still fails there because mktemp is not installed.
2660 XML inclusions seems rosty on AIX.
2662 * Windows: it's still lagging behind. If you want to help, please
2665 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
2667 SimGrid (3.3) stable; urgency=high
2671 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
2672 [Malek Cherier & Mt]
2674 * Introduce the SIMIX module: factorize code between MSG and GRAS.
2677 Until now, GRAS were using MSG as an interface to SURF. It was
2678 quite difficult because both interface have several differences
2679 (MSG channels vs GRAS sockets were the most notable point).
2681 This also opens the gate to SMPI (which should occur soon) and speed
2682 up simulations by to 40% (even if it were not the main goal).
2684 **************************************
2685 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
2686 **************************************
2687 The point is that events occuring at the exact same timestamp are
2688 not scheduled in the same order with the old and new version. This
2689 may be enough to completely change the execution of simulations in
2690 some cases. Sorry for the inconvenience.
2692 * Cleanup and upgrade the XML format to push further scalability
2693 issues (check http://hal.inria.fr/inria-00256883/ for more info)
2695 * Improve the testing infrastructure with tesh. Now a very large part of
2696 the code is tested not only by being run but also by checking that the
2697 output match an expected output [Mt].
2699 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
2700 is really less memory-demanding, which should allow you to use
2701 larger files in SimGrid [AL].
2703 * Inform valgrind about our contextes, so that it becomes usable
2704 with the default (and more effecient) version of SimGrid
2705 [contributed by Sékou Diakite, many thanks]
2708 * Introduce a listener thread in charge of receiving incoming
2709 messages from the network. It allows to overlap communication and
2710 computation but most notably, it removes some stupid deadlocks due
2711 to the fact that so far, a process could not send and receive at
2712 the same time. This made most non trivial communication schema
2714 * Convert the PIDs from long int to int to match the MSG ones (and
2715 linux ones too) [Mt]
2716 * New function: gras_agent_spawn() to launch a new process on
2717 current host. Only working in simulation for now. [Mt]
2718 * New function: gras_os_hostport() returning a constant form (ie,
2719 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
2722 * Make the backtrace of exceptions more human readable [Mt]
2723 * New module: xbt/str [Mt]
2724 a ton of string utility functions (split, join, printf to a newly
2725 allocated buffer, trim, etc)
2726 * New module: xbt/hash [Mt]
2727 SHA1 hashing algorithm (more to come if needed)
2728 * New module: xbt/synchro [Mt]
2729 synchronization tools (mutex and conditions) working the same way
2730 in simulation and in real life (mainly useful for GRAS, but not
2732 * New module: xbt/queue [Mt]
2733 classical producer/consumer synchronization scheme
2734 * xbt_dynar_new_sync() creates a synchronized dynar. All access
2735 (using the classical functions will get serialized) [Mt]
2736 * Make dictionary internal table dynamic. No need to specify its size
2737 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
2739 * Make sure the log channels are organized as a tree under windows
2740 (because of ANSI C compatibility issue, any channel were child of
2741 root directly) [Mt].
2744 * Cleaned many thing in surf and fixed a few bugs [AL].
2745 * Add a nice command line configuration mechanism to compose models [AL].
2746 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
2747 the previous one (KCCFLN05). It relies on something that looks like
2748 a max-min sharing mechanism but cannot be written as such. A new solver
2749 was thus designed [AL].
2750 * Add a new solver to lmm. Based on Lagrange optimization and
2751 gradient-based descent, it enables to efficiently maximise systems s.a
2753 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
2755 This solver enables to propose two new network models for TCP Reno and
2756 TCP Vegas based on Low's work. These models still need to be fully
2757 tested though [Pedro Velho].
2760 * Bug fix in SD_simulate. Now the time bound given as argument is
2762 * Use the new parallel task model (ptask_L07) as default.
2763 * Use the SURF command line configuration mechanism.
2764 * 0-size tasks (for synchronization) should now work.
2766 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
2768 SimGrid (3.2) stable; urgency=high
2772 We still experience issues on this platform, but we believe that at
2773 least MSG is usable.
2775 GRAS API BREAKAGE (for simplification purpose, sorry):
2776 * the gras_msgtype_by_name is not used anymore. Instead of
2777 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
2778 you can write (and must)
2779 gras_msg_send(toserver, "request", &request);
2780 - If you still want to pass a gras_msgtype_t to the function (to cache
2781 the type and avoid the lookup time), use the gras_msg_send_() variant.
2782 - Impacted functions:
2783 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
2784 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
2785 * The callbacks are now expected to return 0 when everything went well
2786 (just like the main() function)
2788 GRAS new features and improvements:
2789 * New module mechanism where user code can use per process globals [Mt]
2790 This is similar to gras_userdata_*() functions, but for libraries. It
2791 factorize some code developped over and over in the examples and AMOK.
2792 It has still to be documented and used (only amok/peermanagement is
2794 * Fix a vicious bug in the TCP buffering mechanism which leaded to message
2795 loss when they were small enough to fit into the buffer and sent quickly
2796 enough so that they can all get received in one shoot.
2797 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
2798 if not found. Use the *_or_null() variant for the old semantic.
2799 * In gras_msg_handle, do not discard messages without callback.
2800 They are probably messages to be explicitly awaited later (ie, proofs of
2801 mis-synchronization in userland since they are sent before being awaited)
2802 No big deal usually.
2803 * gras_socket_meas_send/recv: semantic changed!
2804 The numerical arguments used to be (1) the total amount of data to send
2805 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
2806 messages. This was need for the fool willing to send more than MAXINT
2807 bytes on quite fat pipes.
2810 * Do really rename the hostmanagement module to peermanagement. [Mt]
2811 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
2812 but this is rather new and this was documented in the module
2813 documentation (poor excuses, I admit)
2814 * Bandwidth measurement semantic changed! This follows the changes to
2815 gras_socket_meas_send/recv explained above.
2818 * A sequential mode has been added to the workstations. When a workstation
2819 is in sequential mode, it can execute only one task, and the other tasks
2820 are waiting in a FIFO. [Christophe Thiery]
2823 * The KCCFLN05 workstation model now handles parallel tasks. It is the
2824 model for SIMDAG. [Christophe Thiery]
2825 * Bug fix in the maxmin solver: Some values were close to 0 instead of
2826 equal to 0, which caused some bad behaviors in
2827 saturated_constraint_set_update. I now use a threshold mechanism like in
2831 * When running manually src/testall, you select specific units [Mt]
2832 testall is the result of our cunit mechanism, and should replace all
2833 the scripty thingy around since bash don't run easily on billware.
2835 * A mallocator system has been added. [Christophe Thiery]
2836 Mallocators allow you to recycle your unused objects instead of freeing them
2837 and allocating new ones.
2839 Documentation update:
2840 * FAQ reworking + New FAQs:
2841 - "Valgrind spits tons of errors!" [Mt]
2842 - "How to repport bugs" [Mt]
2843 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
2844 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
2845 - Communication time measurement within MSG [AL]
2846 - I experience weird communication times when I change the latency [AL]
2847 * GRAS tutorial [Mt]
2849 - an introduction to the framework and to the used communication model
2850 - an initiatic tour introducing the most proheminent features:
2852 . Lesson 0: Installing GRAS
2853 . Lesson 1: Setting up your own project
2854 o Part 2: Message passing
2855 . Lesson 2: Exchanging simple messages
2856 . Lesson 3: Passing arguments to the processes (in SG)
2857 . Lesson 4: Attaching callbacks to messages
2858 . Lesson 5: Using globals in processes
2859 . Lesson 6: Logging information properly
2860 . Lesson 7: Using internal timers
2861 . Lesson 8: Handling errors through exceptions
2862 . Lesson 9: Exchanging simple data
2863 . Lesson 10: Remote Procedure Calling (RPC)
2864 . Lesson 11: Explicitely waiting for messages
2865 . Recapping of message passing features in GRAS
2866 - A HOWTO section containing:
2867 o HOWTO design a GRAS application
2868 More are due, of course. They will come latter. In the meanwhile, you can
2869 check the examples which are still here.
2871 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
2873 SimGrid (3.1) stable; urgency=high
2877 There was a stack corruption somewhere, visible only when optimizing
2878 with these versions. [Vince]
2881 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
2882 module that enabled to play with Directed Acyclic Graphs. It is built
2883 directly on top of SURF and provides an API rather close to the old
2884 SG. Some old codes using SG are currently under rewrite to check that
2885 all needful functions are provided. [Christophe Thiery]
2888 * Complete rewrite of the KCCFLN05 workstation model. It is now an
2889 extension of the classical CLM03 model that gracefully handles
2890 failures. This is now the default model for MSG and GRAS. It doesn't
2891 handle parallel tasks yet though. [AL]
2892 * Bug fix: Weights were not correctly set in the network part.
2893 WARNING: This may have resulted in incorrect results with simulations
2894 where there are more than one flow on a given link. [AL]
2897 * After a (long ?) discussion on simgrid-devel, we have decided that the
2898 convention we had on units was stupid. That is why it has been decided
2899 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
2900 WARNING: This means that all previous platform files will not work as
2901 such with this version! A warning is issued to ask users to update
2903 A conversion script can be found in the contrib module of the CVS, under
2904 the name contrib/platform_generation/surfxml_update.pl [MQ]
2907 * Bug fix: Processes were started in reverse order, wrt deployment file.
2908 WARNING: if your code relies on this bug, please fix it. [AL]
2909 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
2910 being executed on two different locations. [AL]
2911 * Bug fix: Failures are now better supported thanks to Derrick's tests
2912 (there was many failure situations I hadn't thought of and that weren't
2913 correctly handled). [AL]
2914 * New function: MSG_host_is_avail indicates you whether a given m_host_t
2918 * New! a real RPC mechanism, as it ought to be since too long. [MQ]
2919 Exception occurring on server-side are propagated back to client (!).
2921 API CHANGE: the callback changed their prototype. Change:
2922 int my_handler(gras_socket_t expeditor, void *payload_data) {
2924 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
2925 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
2927 * New! function: gras_msg_handleall to deal with all messages arriving
2928 within a given period.
2929 * New! function: gras_socket_server_range to get a server socket in a
2930 range of port numbers (ease to avoid port number conflicts) [MQ]
2931 * New! gras processes display their backtrace when they get a SIGUSR1
2932 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
2933 Sweet to debug RL processes [MQ]
2937 - Do not force experiment sizes to be expressed in kb, or it becomes
2938 impossible to measure the latency this way (needs one byte-long tests)
2939 WARNING: this changes the amok_bw_* function semantic. [MQ]
2940 - Implements the link saturation stuff. [MQ]
2941 * Peer management module:
2942 New! module factorizing code that we wrote over and over [MQ].
2945 * New module: cunit (my jUnit implementation in ansi C) [MQ]
2946 - Test units are placed directly into the library code, they get extracted
2947 automatically and placed into the src/testall binary.
2948 - Convert most of the XBT tests to this system.
2949 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
2950 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
2951 live in the same C code. This required to change a little bit the API
2952 of surfxml parsing but shouldn't be an issue for end-users. [AL]
2953 * New module: sparse graph structure with basic algorithms (this is work
2954 in progress and the API is not considered to be frozen yet). [AL]
2955 * Display more information on backtraces: source line & function names are
2956 now displayed just like valgrind does (rely on addr2line tool) [MQ]
2957 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
2958 * Reworked a little bit some #include statements to load only required
2959 headers. Some user code that relied on SimGrid to include stdlib or
2960 stdio may need to include it by themselves. [AL]
2961 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
2963 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
2964 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
2965 but I guess that almost nobody used those parts. [MQ]
2967 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
2969 SimGrid (3.0.1) stable; urgency=low
2972 * Unfortunately, I had missed 5 misnamed functions:
2973 xbt_fifo_item_t xbt_fifo_newitem(void);
2974 void xbt_fifo_freeitem(xbt_fifo_item_t);
2975 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
2976 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
2977 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
2978 They're now deprecated. Please use their new versions:
2979 xbt_fifo_item_t xbt_fifo_new_item(void);
2980 void xbt_fifo_free_item(xbt_fifo_item_t);
2981 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
2982 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
2983 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
2985 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
2986 * Documentation: xbt_log module unmercifully reworked [MQ]
2987 * Bugfix: there was a problem with the ending of contexts with
2988 the pthread backend. It caused some weird deadlock or behavior
2989 depending on the pthread implementation. [AL]
2990 * Bugfix: get the exceptions raised in the simulator repport where
2991 and why they come from when they are not catched in time [AL, MQ]
2994 * Bugfix: Do repport the error when two non-connected hosts try to
2995 exchange data (Thanks to Flavien for stumbling into this one) [AL]
2998 * Add additionnal checkings on communications. Assert that two
2999 communicating hosts are connected by a set of links... [AL]
3002 * Add additionnal checkings on channel values in communication [AL]
3003 * New: MSG_task_get_source to see on which host a task was generated [HC]
3004 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
3005 the number of tasks waiting to be received on channel and sent
3007 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
3008 waits for the first task coming from a given host.. [AL]
3010 GRAS new functionnalities: [MQ]
3011 * Enhance the parsing macro to allow the size of multidimentional objects
3012 to be given thru annotations.
3013 * New example (and documentation): Matrix Multiplication a la RPC
3014 (as when I was young!) and fix a bunch of bugs found on the way.
3016 GRAS performance improvements: [MQ]
3018 * Reduce the amount of cbps creation/destruction by making it static to
3019 datadesc_send/recv() and using a (newly created) cbps_reset (based on
3022 * Change libdata to a set so that we can search for stuff by ID (and thus
3023 reduce the insane amount of dict lookups)
3026 * Actually implement gras_datadesc_copy() so that we don't have to mimick
3027 RL communication on top of SG since it's so uneffective.
3028 It may also be used for inter-thread communication in RL, one day.
3029 * Use gras_datadesc_copy() to exchange messages on top of SG
3031 - improve message exchange performance on top of SG
3032 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
3033 * Don't exchange on the network the size of the used part of buffer,
3034 instead, specify the possible buffer size to read().
3036 - reduces the amount of read/write calls (one pair per exchange)
3037 - reduces the amount of exchanged data (the size)
3038 - allows to retrieve all arrived data on receiver side, if we don't need
3039 it right now (subsequent read will peek the buffer)
3040 - allows the receiver to proceed with the begining of the stream before
3041 everything is arrived
3042 - make it possible to build an iov transport (using readv/writev)
3044 - take care of the data with non-stable storage (like stacked data),
3046 * If possible, TCP send uses vector I/O (when writev() is here)
3047 - Don't use it for receive since we send data sizes and data on the
3048 same stream, so we wouldn't be able to chain large amount of chunks
3049 before having to flush the stuff to read the size.
3050 * Rework the transport plugin mechanism to simplify it and reduce the
3051 amount of pointer dereferencement when searching for the right function
3054 * I guess that now, we do almost as few system calls as possible while
3055 doing as few data copy as possible.
3057 To improve it further, we could try to send all the sizes first and then
3058 all the data (to use iov on receiving size), but it's only a partial
3059 solution: when you have 2 dimensional data, the sizes of the second
3060 dimension is data of the first dimension, so you need 3 streams.
3062 I'm not sure the potential performance gains justify the coding burden.
3064 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
3066 SimGrid (3.00) stable; urgency=high
3069 * New! Give the possibility to hijack the surf parser and thus bypass
3070 MSG_create_environment and MSG_launch_application. Have a look at
3071 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
3073 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
3075 SimGrid (2.96) unstable; urgency=low
3080 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
3081 This deprecates the xbt_error_t mechanisms.
3082 It modifies (simplifies) all XBT and GRAS API.
3083 MSG API keeps unchanged (exceptions raised by XBT are catched from
3084 within MSG and masked with existing error handling facilities)
3087 * New! Add a FATPIPE model. [AL]
3088 * New! Add a parallel task model. [AL]
3089 * New! Add automatically a loopback interface (in the default
3090 network model) if none was precised.
3093 * Bugfix: MSG_process_resume now works with the current running process.
3095 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
3096 * Modification of MSG_task_get_compute_duration. Once a task has been
3097 processed, the value returned by this function is now equal to 0. [AL]
3098 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
3099 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
3100 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
3101 of a m_task. For now, MSG_task_cancel only works with computation
3103 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
3104 of the processor (in Mflop/s) regardless of the current load on the
3106 * API Change: use proper naming convention for MSG_getClock and
3107 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
3109 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
3110 This function changes the priority of a computation task. This priority
3111 doesn't affect the transfer rate. A priority of 2 will make a task
3112 receive two times more cpu power than the other ones. This function
3113 has been added to suit the needs of Nguyen The Loc and hasn't been that
3114 much tested yet. So if it fails, please report it and send me your code.
3116 * API Change: removed all functions and types that were marked "deprecated"
3117 since many months. Renamed MSG_global_init_args to MSG_global_init.
3119 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
3121 SimGrid (2.95) unstable; urgency=low
3124 * Steal some nice code to GNU pth to fix context detection and usage [AL]
3125 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
3126 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
3129 * Bugfix: Allow absolute paths for platform description files [MQ]
3130 * Bugfix: do free the variables after use. Leads to drastic performance
3132 * Implement max_duration (ie, timeouts) on resources [AL]
3135 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
3137 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
3138 the needed support (timeouts) [AL]
3141 * Implement measurement sockets. You can now get the bandwidth between two
3142 hosts thanks to AMOK (see below). [MQ]
3143 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
3144 dynar over the network (yeah) [MQ]
3145 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
3146 * simple/static token-ring example. [Alexandre Colucci and MQ]
3147 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
3148 in place before [MQ]
3151 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
3152 type parsing. "short" and "long" modifiers were also ignored; other
3153 modifier (such as reference level) are still ignored. [MQ]
3154 * Embeed the buffer size within the buffer itself on SG. [MQ]
3155 That way, send() are atomic and cannot get intermixed anymore (at least
3156 the ones which are less than 100k; bigger messages still have the issue)
3157 * Array size pushed by the field, not by the field type (or each
3158 and every long int will push stuff to the cbps) [MQ]
3159 * use select() to sleep since it allows to portably sleep less than one
3162 GRAS (minor cleanups)
3163 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
3166 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
3167 * type category 'ignored' killed as it was never used and were difficult
3169 * whether a type can cycle or not is now a flag, leaving room for more
3170 flags (as "ignored", if we feel the need one day ;)
3171 * Rename raw sockets to measurement sockets since "raw" has another
3172 meaning in networking community.
3175 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
3176 and offers features not belonging to GRAS but that most applications
3177 need. One day, it may be a set of plugins loadable at runtime.
3178 * New module: bandwidth
3179 bandwidth measurement between arbitrary nodes running this module. [MQ]
3181 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
3183 SimGrid (2.94) unstable; urgency=low
3185 The first beta release of SimGrid 3 !
3189 * Update the main page and the FAQ. Adding references to gforge.
3192 * Add a gras_os_getpid function.
3195 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
3196 * Extend the logs so that they also print PID, hostname, date, ... if
3198 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
3199 and kill the old version which were in testsuite/
3200 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
3204 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
3205 for users. Instead, each programming environment (GRAS, MSG,...) use it
3206 when needed to provide such a feature to users.
3207 Don't shortcut the mechanism or you will also shortcut the virtualization
3208 you need on the simulator.
3212 * Cleanups in configury with regard to compile optimization/warning flags.
3213 Also add -fno-loop-optimize to any powerpc since it's the optimization
3214 killing gcc (< 3.4.0).
3215 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
3216 needed by MSG examples complications
3217 * Borrow configury beautifications from PHP
3220 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
3221 warning (thanks loris for stumbling into this one).
3222 * Bugfix: stop loading private headers (gras_config.h) from the public
3226 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
3227 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
3228 RL would imply a DNS resolver, which is *hard* to do in a portable way
3229 (and therefore delayed).
3230 * Implement a real timer mechanism and use it in timing macros. This allows
3231 to avoid rounding errors and get a 0.000005 sec precision in timing
3232 macros. While I was at it, various cleanups:
3233 - allow to declare more than one timed section per file (fix a stupid bug)
3234 - move some private declaration to the right place
3235 - merge conditional execution and timing macros into emulation module
3236 - document the module
3237 - make sure the module cleanups its mess on gras_exit
3238 * Documentation improvements:
3239 - (new) how to compile applications using GRAS
3240 - (new) emulation support (timing macros)
3242 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
3244 SimGrid (2.93) unstable; urgency=low
3246 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
3249 - Use Paje properly where used. Still to be sanitized properly.
3250 - Portability fix: Add an implementation of the contexts using pthread
3254 - Add xbt_procname(): returns the name of the current process.
3255 Use it to show the current process's name in all logging.
3257 - fix detection of older flex version and the reaction, since we do
3258 depend on modern ones (we use lex_destroy)
3259 - Better separation of SG and RL in the libs: remove all simulation code
3260 from libgras. As a result, this lib is now only 200k when stripped.
3261 Some of the xbt modules may also be duplicated (two sets and such) and
3262 should be cleaned/killed before SG3.
3263 - Insist on using xlC on AIX because of weird problems involving gcc there.
3264 - Cleanup the make remote stuff. This is now done by scripts
3265 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
3266 mainly for our private use, but we're working on changing them to user
3269 - Bugfix: flush the socket on close only if there is some *output*.
3270 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
3272 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
3275 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
3277 SimGrid (2.92) unstable; urgency=low
3279 Alpha 3 on the path to SimGrid 3
3283 - New! First try of benchmarking macros.
3284 - New! First try so that gras_stub_generator generate deployment and
3285 remote compilation helpers.
3287 - Bugfix: Initialization fix in msg_test.
3291 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
3293 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
3295 - API Change: gras_os_sleep to take the amount of seconds as a double.
3296 Accepting an int was error prone since it was the only location where
3297 seconds were coded as such. It leaded to damn rounding errors.
3298 - Bugfix: Hard to belive that timers ever worked before this.
3300 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
3302 SimGrid (2.91) unstable; urgency=low
3304 Alpha 2 on the path to SimGrid 3
3308 - Bug fix in the lmm_solver.
3310 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
3311 through the function MSG_paje_output.
3312 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
3313 - It is possible to bound the rate of a communication in MSG with
3314 MSG_task_put_bounded() (was already in the previous version but I had forgotten
3315 to write it in the changelog).
3316 - Bug fix to let GRAS run on top of MSG until we move it directly on top
3321 - Various cleanups to the autotools stuff
3322 - Begin to move Gras examples to examples/gras/
3323 - Let make distcheck work again (yeah!)
3325 - documentation overhauled using doxygen.
3326 gtk-doc-tools is dead in SimGrid now.
3327 - Automatically extract all existing logging categories, and add the list
3328 to the documentation (long standing one, to say the less)
3330 - Cleanup the known architecture table. Reorder the entries to group what
3331 should be, and use a more consistent naming scheme.
3332 (some of the test dataset are still to be regenerated)
3333 - New! Allow library to register globals on each process just as userdata
3335 This is implemented using a xbt_dict and not a xbt_set, so we loose the
3336 lookup time (for now).
3337 Use it in msg and trp.
3338 This cleans a lot the internals and helps enforcing privacy of the
3339 headers between the gras components.
3340 - New! Add a timer mechanism, not unlike cron(8) and at(1).
3341 - Bugfix: gras_os_time was delirious in RL.
3342 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
3344 - Reenable GRAS now that it works.
3346 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
3348 SimGrid (2.90) unstable; urgency=low
3350 Alpha 1 on the path to SimGrid 3
3352 * It is a long time since the last release of SimGrid. I'm sorry about
3353 that but as I had told you, I was rewriting a lot of things. I apologize
3354 to those who had been reporting bugs to me and that I had not answered.
3355 If your bug is still in the new version, please tell me. Here is a
3356 summary of the main changes.
3358 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
3359 lead by Martin Quinson. As a consequence SimGrid gains a lot in
3360 portability, speed, and a lot more but you'll figure it out later.
3361 SimGrid now comprises 3 different projects: MSG, GRAS and SMPI.
3362 I wanted to release the new MSG as soon as possible and I have
3363 broken GRAS, which is the reason why, for now, only MSG is fully
3364 functional. A laconic description of these projects is available
3365 in the documentation.
3367 * REVOLUTION 2: I have removed SG and I am now using a new simulation
3368 kernel optimized for our needs (called SURF but only the developers
3369 should use it). Hence, MSG is now roughly 30 times faster and I think
3370 that by rewriting a little bit MSG, I could event speed it up a little
3371 bit more. Beside the gain in speed, it is also much easier to encode a
3372 new platform model with SURF than it was with SG. More to come...
3374 * REVOLUTION 3: I have tried to change a little as possible the API of
3375 MSG but a few things really had to disappear. The main differences
3376 with the previous version are:
3377 1) no more m_links_t and the corresponding functions. Platforms are
3378 directly read from a XML description and cannot be hard-coded
3379 anymore. The same format is used for application deployment
3380 description. The new format is described in the documentation.
3381 Have a look in tools/platform_generation. There is a tiny script
3382 that converts from the old platform format to the new one. Concerning
3383 the application deployment format, parsing the old one is tricky.
3384 I think most of you should however be able to convert your files. If
3385 it is really an issue, I can write a C code that does the conversion.
3387 2) the toolbox tbx does not exist anymore. We now have a library
3388 with much more data-structures but without the hash-tables (we have
3389 dictionaries that are much faster).
3391 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
3393 *****************************************************************************
3394 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
3395 * don't feel like converting the oldies. (Mt) *
3396 *****************************************************************************
3399 Version 2.90: "the long awaited one"
3400 - Finished rewriting and debugging MSG. Rewrote the documentation.
3401 - disable GRAS for now since it needs to be ported to the newest SG
3404 - Finish the port to windows (using mingw32 for cross-compile)
3407 - Main loop and datastructures of SURF. A cpu resource object is
3408 functional. Surf can thus be used to create cpu's with variable
3409 performance on which you can execute some actions.
3411 2004-11-15 Martin Quinson
3412 - Port to ARM. Simply added the alignment and size descriptions. Should
3413 work, but the ARM machines are so slow that I didn't had the opportunity
3414 to 'make check' over there yet.
3416 2004-11-15 Arnaud Legrand
3417 - Trace manager now written. It uses a heap structure and is therefore
3418 expected to be efficient. It may however be speeded up (particularly
3419 when many events occur at the same date) by using red and black
3420 trees. One day maybe...
3421 - Max-min linear system solver written. It uses a sparse matrix
3422 structure taking advantage of its expected use. Most operations are
3423 O(1) and free/calloc are called as few as possible. The computation of
3424 the minimum could however be improved by using a red and black tree
3427 2004-11-03 Arnaud Legrand
3428 - Rename every gras_* function that was in xbt/ to its xbt_
3430 - Add a heap and a doubly-linked list to xbt
3431 - Added a dichotomy to the dictionaries. make check works as well before
3432 so I assume that the patch is correct. I do not know however if things
3433 run effectively faster than before now. :)
3435 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
3436 SimGrid, and the version number is bumped to 2.x
3438 2004-10-29 Martin Quinson
3439 - Introduction of the remote errors.
3440 They are the result of a RMI/RPC on the remote machine.
3441 ErrCodes being scalar values, you can't get the host on which those
3442 errors did happen. Extending the error mechanism as in Gnome is possible.
3443 No idea yet whether it is a good idea.
3445 2004-10-28 Martin Quinson
3446 - Interface revolution: the Starred Structure Eradication.
3447 I used to do typedef struct {} toto_t; and then handle *toto_t.
3448 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
3449 - ???_t is a valid type (builded with typedef)
3450 - s_toto_t is a structure (access to fields with .)
3451 - s_toto is a structure needing 'struct' keyword to be used
3452 - e_toto_t is an enum
3453 - toto_t is an 'object' (struct*)
3455 typedef struct s_toto {} s_toto_t, *toto_t;
3456 typedef enum {} e_toto_t;
3457 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
3458 s_toto_t) is private.
3460 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
3461 so that it can set the variable to NULL. It was so for dicts and sets,
3462 it changed for dynars.
3464 - Fix a bunch of memleaks in dict_remove
3465 - Fix a bug in sg/server_socket opening: it failed all the time.
3467 2004-10-07 Martin Quinson
3468 - Speed up dynar lookup operation a bit.
3470 gras_dynar_get is dead.
3472 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
3473 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
3474 (which gives you the address of the stored data).
3476 gras_dynar_get_as is an helpful macro which allows you to retrieve a
3477 copy of the data using an affectation to do the job and not a memcpy.
3479 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
3480 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
3482 It does not really speedup the dynar test because they are
3483 setting elements all the time (and look them seldom). But the dict does
3484 far more lookup than setting.
3486 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
3488 2004-10-05 Martin Quinson
3489 - Allow to (en/dis)able the cycle detection at run time.
3491 Whether we should check for cycle or not is now a property of each
3492 datatype. When you think there may be some cycle, use datadesc_cycle_set.
3493 datadesc_cycle_unset allow to remove this property when previously set.
3495 Note that the cycle detection is off by default since it impacts the
3496 performance. Watch the data you feed GRAS with ;)
3498 This property is hereditary. Any element embedded in a structure having it
3499 set have it set for the time of this data exchange.
3501 You should set it both on sender and receiver side. If you don't set it on
3502 sender side, it will enter an endless loop. If you forget on receiver
3503 side, the cycles won't be recreated after communication.
3505 - Header reorganization.
3506 Kill gras_private.h, each submodule must load the headers it needs.
3508 2004-10-04 Martin Quinson
3509 - Interface revolution: do not try to survive to malloc failure.
3511 Now, gras_malloc and friends call gras_abort() on failure.
3512 As a conclusion, malloc_error is not a valid error anymore, and all
3513 functions for which it was the only gras_error_t return value are
3514 changed. They now return void, or there result directly.
3515 This simplify the API a lot.
3517 2004-09-29 Martin Quinson
3518 - Re-enable raw sockets.
3519 Created by gras_socket_{client,server}_ext;
3520 Used with gras_raw_{send,recv}
3523 It should allow to kill the last bits of gras first version soon.
3525 This is not completely satisfactory yet (duplicate code with
3526 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
3529 - Simplify transport plugin (internal) interface by not passing any
3530 argument to _server and _client, but embedding them in the socket
3533 2004-09-28 Martin Quinson
3534 - Finish the port to AIX.
3535 autoconf was my problem (segfault within the malloc replacement
3536 function. No idea why)
3538 2004-09-16 Martin Quinson
3539 - Fix some size_t madness on 64bit architectures.
3541 2004-09-08 Martin Quinson
3542 - Reduce the number of system headers loaded, overload some more system
3543 calls (such as malloc to cast the result of the system one, and work
3545 - Fix and reintroduce the config support
3547 2004-09-07 Martin Quinson
3548 - Source code reorganization to allow Arnaud to surf all over there.
3549 - Allow to document the logging categories.
3550 - Remove all uppercase from logging categories and useless cleanup in names.
3552 2004-08-18 Martin Quinson
3553 Version 0.6.2 (protocol not changed; API changed)
3554 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
3555 gras_error_t), and NULL when not found. Functions expecting a msgtype
3556 as argument (msg_wait; msg_send) deal with NULL argument by providing a
3557 hopefully usefull message.
3558 - Portability to prehistoric sparcs again
3560 2004-08-17 Martin Quinson
3561 Version 0.6.1 (protocol not changed; ABI not changed)
3562 - prealloc some buffers to speed things up
3564 2004-08-11 Martin Quinson
3565 Version 0.6 (protocol not changed; ABI expended)
3566 - The parsing macro can deal with the references, provided that you add
3567 the relevant annotations (using GRAS_ANNOTE(size,field_name))
3569 2004-08-09 Martin Quinson
3570 Version 0.5 (protocol not changed; ABI changed)
3571 - Allow to off turn the cycle detection code in data exchange at
3572 compilation time. It should be at run time, but I'm short of time (and
3573 the config stuff is still broken). That way, we keep dict out of the
3574 critical path, which is good because the performance is poor:
3575 - search not dichotomial yet
3576 - dynar give no way to access their content and memcpy everytime
3577 - In composed data description (struct, ref and so on), stop foolness of
3578 keeping the subtype's ID, but store the type itself. This keeps sets out
3579 of the critical path, which is good since they rely on dynar and
3580 dictionnaries. The only loose of that is that we cannot detect the
3581 redeclaration of a structure/union with another content (but I'm not sure
3582 the code detected well this error before anyway). We still can detect
3583 the redefinition discrepancy for the other types.
3584 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
3585 it breaks the code because of type-punning used all over the place).
3586 This breaks on all non-gcc architectures (for now).
3588 All those changes (plus the buffer of last time) allow me to gain 2 order
3589 of magnitude on cruel tests consisting of 800000 array of integers on two
3590 level of a hierarchical structure (200 secondes -> 4 secondes)
3593 - the selector of reference must now return the type it points to, not
3594 the ID of this type.
3596 2004-08-06 Martin Quinson
3597 Version 0.4 (protocol changed; ABI not changed)
3598 - Allow to pass --gras-log argument to processes in simulation mode. Really.
3599 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
3600 - Implement a buffer transport, and use it by default (it relies on tcp in
3601 real life and on sg in simulation).
3602 That's a bit hackish since I had a new field to the structure to store
3603 its data without interfering with the subtype ones. Inheritance
3604 is tricky in C. And that's a kind of reverse inheritance with one class
3605 derivating two classes. Or maybe a game with java interfaces. Anyway,
3606 that's damn hard in C (at least).
3607 Moreover, I got tired while trying to ensure plugin separation and
3608 genericity in SG mode. MSG wants me to do weird things, so let's go for
3609 cruel hacks (temporarily of course ;).
3610 See comment in transport_private.h:71
3611 - do not include all the _interface headers in private but in the files
3612 which really need them (to cut the compilation time when they are
3615 2004-07-26 Martin Quinson
3616 Version 0.3 (protocol not changed; ABI changed)
3617 - Major overhault of the datadesc interface to simplify it:
3618 - shorted the function names:
3619 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
3620 - add a trivial way to push/pop integers into the cbps without malloc.
3621 This allows to make really generic sub_type description, which simply
3622 pop their size of the stack.
3623 - add a function gras_datadesc_ref_pop_arr() which does what users want
3624 most of the time: Declare a dynamic array (which pops its size of the
3625 stack) and declare a reference to it. Poor name, but anyway.
3626 - kill the post-send callback, add a post-receive one
3628 2004-07-23 Martin Quinson
3629 Version 0.2 (protocol changed; ABI changed)
3630 - add some testing for cpbs in the test cases, and fix some more bugs.
3631 This invalidate again the little64 data file, since I cannot regenerate
3633 - remove an awfull optimization in the logging stuff, allowing me to:
3634 - understand it again
3635 - learn gcc how to check that the argument match the provided format
3636 - fix all errors revealed by gcc after that
3637 - internal keys of dict are not \0 terminated. Deal with it properly in
3638 loggings instead of segfaulting when the user want to see the logs :-/
3640 2004-07-22 Martin Quinson
3641 - Fix some stupid bug preventing cbps (callback postit) from working
3643 2004-07-21 Martin Quinson
3644 - Some documentation cleanups
3645 - remove the useless last argument of msgtype_declare
3646 - rename the Virtu functions to fit into the 'os' namespace
3647 - move headers src/include -> src/include/gras/ and stop fooling with
3648 gras -> . symbolic link
3649 - make distcheck is now successful
3651 2004-07-19 Martin Quinson
3653 - Build shared library also
3654 - Install html doc to the right location
3655 - stop removing maintainer files in make clean
3656 - build tests only on make check
3658 2004-07-13 Martin Quinson
3660 - No major issue in previous version => change versioning schema
3661 - Re-enable little64 convertion test now that Abdou kindly regenerated the
3662 corresponding dataset.
3664 2004-07-11 Martin Quinson
3666 - Get it working with any kind of structure (we can compute the padding
3667 bytes remotely for all the architectures I have access to)
3668 - Implement the structure parsing macro (still not quite robust/complete)
3669 - Improvement to the remote testing toysuite
3671 2004-07-10 Martin Quinson
3672 [autoconf mechanism]
3673 - get ride of a bunch of deprecated macros
3674 - actually run the test for two-compliment, not only compile it :-/
3675 - test whether the structures get packed (and bail out if yes. Damn.
3676 Alignment is a serious matter)
3677 - test whether the structures get compacted (but respecting the alignment
3678 constraints of each types)
3679 - test whether the array fields of structures can straddle alignment boundaries
3681 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
3682 (took me 2 hours to find that bug, looking at the wrong place)
3683 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
3684 before sending/receiving and are used to compute the offsets of fields
3685 - Given that padding size depend even on compiler options, keep track of
3686 alignment and aligned_size only for the current architecture. Not a big
3687 deal since we send structure fields one after the other (seems
3689 - Add the datastructure used for IEEE paper by the PBIO guys to the test
3690 program, let it work on linux/gcc/little32. portability todo.
3692 2004-07-08 Martin Quinson
3693 - import and improve remote compilation support from FAST
3694 - make sure make check works on half a dozen of machines out there
3696 2004-07-07 Martin Quinson
3697 Let's say it's version 0.0.3 ;)
3698 - Implement conversions (yuhu!)
3699 - Let it work on solaris (beside conversion, of course)
3700 - Stupid me, using rand() to generate the conversion datatests in not wise.
3702 2004-07-06 Martin Quinson
3703 - Let make dist work, since I'm gonna need it to compile on remote hosts
3704 - Let Tests/datadesc_usage write the architecture on which the file was
3705 generated as first byte.
3706 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
3707 architecture descriptions.
3708 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
3709 on those architectures.
3710 - Optimization: send/recv array of scalar in one shoot
3712 2004-07-05 Martin Quinson
3713 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
3715 - Plug a whole bunch of memleaks
3716 - each process now have to call gras_{init,exit}. One day, their log
3717 settings will be separated
3718 - Continue the code factorisation between SG, RL and common in Transport.
3720 2004-07-04 Martin Quinson
3722 - Redistribution between SG and RL.
3723 We wanna have to accept in SG, so move accepted related parts of RL in
3724 the common part. (more precisely, the dynar of all known sockets is no
3725 more a static in transport.c, but part of the process_data)
3727 [gras_stub_generator]
3728 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
3730 2004-07-03 Martin Quinson
3731 - Create a new log channel tbx containing dict, set, log, dynar (to shut
3732 them all up in one shot)
3734 - Fix the ugly case of reference to dynamic array.
3735 - New (semi-public) function gras_datadesc_size to allow the messaging
3736 layer to malloc the needed space for the buffer.
3738 - gras_socket_close now expect the socket to close (and not its address to
3739 put NULL in it after it). This is because the socket passed to handlers
3740 is one of their argument (=> not writable).
3742 - propagate the interface cleanup from last week in datadesc, ie remove a
3743 superfluous level of indirection. User pass adress of variable
3744 containing data (both when sending and receiving), and not of a variable
3745 being a pointer to the data. Let's say that I like it better ;)
3746 The price for that is constructs like "int msg=*(int*)payload" in
3747 handlers, but it's a fine price, IMHO.
3749 - Let it work in RL (yuhu)
3751 2004-06-21 Martin Quinson
3753 - porting SG plugin and SG select to new standards (works almost).
3754 - plug memleaks and fix bugs around.
3757 - cleanup the prototype of data recv and force users to specify when they
3758 want to handle references to objects. Test case working even for cycles.
3759 - plug memleaks. Valgrind is perfectly ok with this.
3761 2004-06-12 Martin Quinson
3763 - cleanup the separation between plugin and main code in plugin creation
3765 2004-06-11 Martin Quinson
3767 - Reput hook for raw sockets, needed for BW experiments
3768 - kill a few lines of dead code
3769 [Data description] Interface cleanup
3770 - gras_datadesc_by_name returns the searched type or NULL.
3771 That way, no variable is needed to use a type desc once, which makes
3773 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
3774 two parameters were strings (field name, type name), leading to
3776 [Dicos] Interface cleanup
3777 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
3778 This is consistant with the dynar API.
3780 2004-04-21 Martin Quinson
3782 - Porting to new standards.
3784 - interface cleanup.
3785 There is no bag anymore, no need to take extra provision to mask the
3786 pointers behind "ID".
3787 Better splitup of functions between files create/exchange/convert.
3788 This is still a bit artificial since convert and receive are so
3789 interleaved, but anyway.
3791 - add a queued message list to procdata (the ones not matching criteria
3793 - factorize some more code between SG and RL wrt procdata
3795 - use gras_exit in example to track memleaks
3796 - get rid of gs_example now that GS is properly integrated into gras
3797 - update run_test to integrate the latest tests (datadesc)
3799 - rename WARNINGn macros to WARNn since it prooved error-prone
3801 2004-04-19 Martin Quinson
3803 - register init/exit functions within gras module mechanism
3804 - send/receive function.
3805 Convertion is not implemented, but short-cutted if not needed.
3806 struct/array elements are sent one by one (instead of block-wise), but
3807 nobody really cares (yet). Get a prototype before optimizing.
3808 - tests (using a file socket) for DD send/receive on:
3809 - base types: int, float
3810 - array: fixed size, string (ie ref to dynamic string)
3811 - structure: homogeneous, heterogeneous
3812 - chained list, graph with cycle
3813 Believe it or not, valgrind is not too unhappy with the results. The
3814 cycle happily segfaults, but the others are ok. And I'm sick of pointers
3818 - Bugfix when using a filename explicitely (instead of '-')
3820 2004-04-09 Martin Quinson
3822 - factorize more code between RL and SG in socket creation
3823 - Complete the implementation and tests of:
3825 o file (only in RL, and mainly for debugging)
3827 I lost 3 days to design a portable address resolver, and then decided
3828 that the prototype mainly have to run on my box.
3829 Addressing portability too early may be like optimizing too early :-/
3831 - use gras_init in the Tests instead of the crappy parse_log_opt
3832 (the latter function is removed)
3833 [Conditional execution]
3834 - New functions: gras_if_RL/gras_if_SG (basic support for this)
3835 [Code reorganisation]
3836 - Get rid of libgrasutils.a since it makes more trouble than it solves.
3837 Build examples against the RL library, since there is no way to disable
3838 its creation for now.
3840 For information, the beginning of coding on GRAS was back in june
3841 2003. I guess that every line has been rewritten at least twice since