1 SimGrid (3.19) NOT RELEASED YET (target: March 20 2018, 16:15:27 UTC)
4 - Fix MSG_task_get_remaining_work_ratio() to return 1.0 for tasks that have
8 - Execution->setHost() can be called after start() to migrate it.
9 - Comm::test_any() is now implemented.
12 - #245: migrating an actor does not migrate its execution
14 SimGrid (3.18) Released December 24 2017
16 The "Ho Ho Ho! SimGrid 4 beta is coming to town" release.
18 MSG IS NOW DEPRECATED. Please use S4U for new projects.
19 - Support for MSG should not be removed from SimGrid before 2020,
20 but future evolutions will be limited to the integration of
21 user-provided patches.
24 - s4u::onDeadlock() signal, run before stopping the simulation.
25 - s4u::Exec: asynchronous executions (abstraction of background
27 - s4u::Host->getLoad() returns the achieved speed in flops/s
30 - Link::name() is deprecated and will be removed in v3.21, use
31 Link::getCname() instead.
32 - Mailbox::getName() changed to return a std::string, use
33 Mailbox::getCname() instead to get a char*.
34 - Storage::getName() changed to return a std::string, use
35 Storage::getCname() instead to get a char*.
36 - s4u::allStorages() becomes s4u::getStorageList(whereTo)
37 to have both allocation and deallocation of the map in user space.
40 - Forbid the use of MSG_task_get_flops_amount() on parallel tasks:
41 The amount of flops remaining to do is a vector, not a scalar.
42 - Introduce MSG_task_get_remaining_work_ratio(), which does what its
43 name implies on both sequential and parallel tasks.
44 - Both changes fix GitHub's #223 using PR #237 as a basis.
45 Thanks Michael Mercier.
46 - Most examples were converted to S4U and hidden elsewhere at tests.
47 Rationale: we still want MSG to work; we want newcomers to use S4U.
50 - LMM stuff moved to its own namespace: simgrid::kernel::lmm.
51 - Renamed LMM classes (e.g. s_lmm_system_t -> System).
54 - Switch to the faster dlopen privatization mechanism by default
55 - Documentation improvments
58 - Live migration is getting moved to a plugin. Dirty page tracking is
59 the first part of this plugin. This imply that VM migration is now
60 only possible if one this function is called :
61 - C/MSG: MSG_vm_live_migration_plugin_init()
62 - C/C++: sg_vm_live_migration_plugin_init()
63 - Java: Msg.liveMigrationInit()
64 For C and C++, "simgrid/plugins/live_migration.h" also has to be
68 - Define class simgrid::xbt::Path to manage file names.
69 - Removed unused functions:
70 - xbt/file.h: xbt_basename(), xbt_dirname(), xbt_getline()
71 - xbt/graph.h: xbt_graph_edge_get_length(), xbt_graph_edge_set_length,
72 xbt_graph_export_graphviz()
73 - xbt/str.h: xbt_str_join()
74 - Remove unused datatypes:
75 - xbt/heap.h: use std::priority_queue or boost::heap instead
76 - xbt/swag.h: use boost::intrusive::list instead
79 - New link_energy plugin for the consumption of the links.
80 - All of the operations on files and storage contents have been
81 packaged into a plugin (src/plugins/file_system). The current
82 public interface can be found in
83 include/simgrid/plugins/file_system.h
84 To use these functions you now have to initialize the plugin by
85 calling MSG_storage_file_system_init() just after calling
86 MSG_init() or sg_storage_file_system_init() just after creating
90 - Remove the undocumented/untested tag <include>
93 - Remove viva specific tracing as the tool is no longer maintained
96 - #248: Kill of finished processes leads to segfault
97 - #240: xbt_cond_wait_timeout should gracefully return for C apps
98 - #239: please implement signal s4u::onDeadlock()
99 - #230: segfaults when exit() without run()
100 - #225: s4u::Actor::kill() doesn not really kill victims in a join()
101 - #223: MSG_task_get_flops_amount() not working with parallel tasks
102 - #222: Actor::kill() doesn't really kill and segfaults
103 - #221: odd LMM warning when killing an actor
104 - #120: Memory leak when the processes are forcefully killed
106 SimGrid (3.17) Released October 8 2017
108 The Drained Leaks release: (almost) no known leaks despite the tests.
110 Even very long simulations will preserve your memory: our testsuite
111 stresses SimGrid for over 45mn on fast machines for a coverage of
112 over 80%, and there is only one single known leak, of about 4kb.
116 - Comm.detach(): start and forget about asynchronous emission. A cleanup
117 handler may be given to free resources if the comm cannot be completed.
118 - this_actor::send(mailbox) is now mailbox->put()
119 - New: simgrid::s4u::Comm::wait_all()
120 - New: Host.execute() for remote executions.
123 - Unused option network/sender-gap is removed.
126 - Deprecate MSG_task_isend_with_matching(): This unused feature
127 really complicates our internals. Will be removed in v3.20.
130 - Improved context termination. It is now possible to free resources, even
131 when a process is forcibly killed.
132 - ContextBoost: add support for Boost versions above 1.61.
135 - Bring back run-time option --cfg=exception/cutpath to remove exception
137 - Removed unused functions:
138 - xbt/str.h: xbt_str_split_str(), xbt_str_subst(), xbt_str_ltrim(),
139 xbt_str_rtrim(), xbt_str_trim().
140 - xbt/xbt_os_thread.h: xbt_os_thread_cancel(), xbt_os_thread_detach().
143 - Removed header files obsolete since SimGrid 3.12:
144 msg/datatypes.h, msg/msg.h, simdag/datatypes.h, simdag/simdag.h.
146 - #3: SD_exit should be made optional
147 - #120: Memory leak when the processes are forcefully killed
148 - #159: Threading test regression in Actor refcounting
149 - #170: simgrid::s4u::Comm::wait_any() returns too many comms
150 - #185: simgrid::s4u::Engine::instance()->shutdown() segfaults
151 - #186: Actor::killAll() segfaults if some process is blocked on wait()
152 - #191: VM migration and pstate
153 - #192: Updating the energy consumptions of all hosts crashes with VMs
154 - #195: All actors have PID=0 in the logs
155 - #204: Sometimes segfault with thread contexts and mmap privatization
156 - #222: Actor::kill() doesn't really kill and segfaults
157 - #225: Actor::kill() doesn't really kill when victims are doing a join()
159 ----------------------------------------------------------------------------
161 SimGrid (3.16) Released June 22. 2017.
163 The Blooming Spring Release: developments are budding.
166 - FreeBSD: Disable SMPI mmap privatization, switch automatically to dlopen.
167 - Mac, BSD: dlopen+thread broken, switch automatically to raw contexts.
168 - Java JAR file should be finally fully working on Mac OSX too.
170 XML platforms: Switch to platform v4.1 format.
171 * This is (mainly) a backward compatible change: v4 are valid v4.1 files
172 - <zone> can be used as a synonym for the now deprecated <as>
173 - <zoneRoute> can be used as a synonym for the now deprecated <asroute>
174 - <bypassZoneRoute> an be used as a synonym for the now deprecated <bypassAsRoute>
175 - <actor> can be used as a synonym for the now deprecated <process>
176 - state_file and avail_file periodicity is now easier to express
177 (check the documentation) the old behavior should still work.
178 * Storage: not backward compatible, but it seems that nobody ever used it
179 - Remove attribute 'content_type' of <storage_type>: was never used
180 - Make attribute 'model' of <storage_type> optional: for future usage
181 - Remove Bconnection model property: was never (in)validated. Replaced by
182 the maximum of the read and write bandwidth as a resource constraint.
185 - New and Backwards Compatibility break:
186 SD_simulate_with_update (double how_long, xbt_dynar_t changed_tasks_dynar)
187 When one wants to get the list of tasks whose states have changed during a
188 simulation round, s/he has to allocate and free a dynar and use it as
189 argument to this function. The former SD_simulate (double how_long)
193 - Allow multicore VMs, with the correct sharing (unless you overcommit)
194 BUG: vCPU overcommitting still leads to buggy sharing, though. WIP.
197 - New function to update the consumption of all hosts at once.
198 - Fix the model for multi-core hosts, linear in the amount of busy
199 cores with an abnormality for pIdle (see paper).
200 BUG: Still not satisfactory for ptask on mono-cores.
203 - The netzone are now available from the MSG API.
204 The old names still work, but are now deprecated.
207 - New algorithm to privatize globals: dlopen, with dynamic loading tricks
208 - New option: smpi/keep-temps to not cleanup temp files
209 - New option : smpi/shared-malloc-blocksize . Relevant only when global shared
210 mallocs mode is used, allows to change the size of the fake file used
211 (default 1MB), to potentially limit the number of mappings for large runs.
212 - Support for sparse privatized malloc with SMPI_PARTIAL_SHARED_MALLOC()
213 - Fortran ifort and flang compilers support
214 - New RMA calls supported (experimental) :
215 - MPI_Win_allocate, MPI_Win_create_dynamic, MPI_Win_attach
216 - MPI_Win_detach, MPI_Win_set_info, MPI_Win_get_info
217 - MPI_Win_lock_all, MPI_Win_unlock_all, MPI_Win_flush
218 - MPI_Win_flush_local, MPI_Win_flush_all, MPI_Win_flush_local_all
219 - MPI_Op_commutative, MPI_Fetch_and_Op, MPI_Compare_and_swap
220 - MPI_Rput, MPI_Rget, MPI_Raccumulate, MPI_Rget_accumulate
223 - New: this_actor::isMaestro() returns whether we are in kernel mode.
224 - Behind the scene, ActivityImpl are now automatically refcounted.
225 Removing this nasty bottleneck will greatly simplify our internals.
228 - Replay: New function xbt_replay_action_get():
229 Retrieve the function previously associated to an event type.
230 - DROPPED FUNCTION: xbt_str_varsubst()
231 - DROPPED MODULE: strbuff. We don't need it anymore.
232 - DROPPED MODULE: matrix. We don't need it anymore.
233 - DROPPED MODULE: lib. We don't need it anymore.
235 -- Thu Jun 22 22:48:12 CEST 2017 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
237 SimGrid (3.15) Released March 22. 2017
239 The Spring Release: continuous integration servers become green
240 We fixed even the transient bugs on all target architectures:
241 Linux (CentOS, Debian, Ubuntu, Fedora), Mac OSX (Mavericks, El Capitan)
242 Windows, FreeBSD, NetBSD.
244 - Rename NetCards to NetPoints.
245 This was intended to help NS3 users, but that's not a netcard.
246 That's a point in the routing algorithm, let's avoid wrong simplifications.
249 - New: MSG_process_yield(). Stop and yield to other processes.
250 - New: MSG_process_daemon(). Daemon processes are automatically killed
251 when the last non-daemon process terminates
252 - New: MSG_process_ref/unref(). Fiddle with the process refcounting.
253 - Renamed MSG_energy_plugin_init() -> MSG_host_energy_plugin_init()
254 to make room for the upcoming network energy plugin.
255 - Drop MSG_host_get_current_power_peak: duplicates MSG_host_get_speed
258 - Ensure that an actor can kill itself with Process::exit()
259 - Kill the obscure NativeException. Nobody want to survive the issues
260 it denotes, so use JniException that is a RuntimeException (not to
261 be caught explicitly).
262 - Partial bug fix in initialization. SimGrid flags on command line were
263 consumed at C level but stayed in the original Java String[] args.
264 This could mess users' args[i] if SG flags were not put at the end of
266 The SimGrid flags are now removed from the Java arguments. However,
267 the number of arguments REMAINS UNCHANGED. It is then UNSAFE to test
268 if args.length is greater than the number of YOUR OWN ARGUMENTS.
269 It might be if you have --log or --cfg flags in the command line.
270 - Fix numerous memleaks all around the place. In particular, around VMs.
274 - s4u::onPlatformCreated: right before the simulation starts
275 - s4u::onSimulationEnd: right after the main simulation loop
276 - s4u::onTimeAdvance: right after a clock change (time is discrete)
277 - s4u::Host::onSpeedChange: when the pstate is changed, or when an
278 event from the availability_file changes the avail speed.
279 - Links are now usable from s4u
280 - New: Engine::hostList() and Engine::hostCount(). Still clumsy.
281 - New: Actor::suspend(), Actor::resume(), and Actor::migrate(new_host)
282 - New examples: The conversion of MSG examples to S4U has begun
283 - Actors: create, kill, migration, and suspend
284 - Applications: master-worker and token-ring
285 - Action replay: communications and storage
286 - Drop Host::getPstateSpeedCurrent() which duplicates Host::speed()
289 - Backwards Compatibility breaks
290 - The SD_route_get_list and SD_route_get_size functions have been removed.
291 They are replaced by the unique
292 void sg_host_route(sg_host_t src, sg_host_t dst, xbt_dynar_t links)
293 The route from src to dst is built in the links dynar whose size can
294 be obtained with xbt_dynar_length.
295 - The SD_route_bandwidth and SD_route_latency functions have been replaced by
296 sg_host_route_bandwidth and sg_host_route_latency.
297 Macros ensure the backwards compatibility, but you should fix your code
300 - Major C++ rewrite ongoing (SMPI used to be C compiled in C++).
301 This can break codes using SMPI internals (from private.h instead of the public smpi.h).
302 - Bump our claim of support from MPI 1.1 to MPI 2.2.
303 We don't support 100% of it, but it should be enough. Contact us if not.
304 - MPI_Win_lock/unlock, MPI_Get_accumulate support added (as for all RMA, implementation is
305 naive and probably inaccurate)
306 - New algorithm for SMPI_SHARED_MALLOC: global, where all blocks are
307 mapped onto a unique small file using some system magic.
308 - Bugfix: smpirun was sometimes misusing hostfile when wrongly terminated
309 - Fortran: cleanups, fixes, support of user-added operations
310 - RMA: MPI_Accumulate are applied in correct order.
311 - RMA: MPI_Win_{complete/post} shouldn't miss messages anymore.
312 - Better support for MPI_IN_PLACE
313 - Support for MPI_Win attrs and keyvals.
314 - Support MPI_Comm_group_create, MPI_Type_size_x
315 - MPI ops should be properly applied to all allowed types
316 - Replace implementation of MPI_Bcast "scatter followed by rdb allgather"
317 algorithm by a non failing one from mpich.
320 - Kill the fifo data container: we don't use it anymore.
323 - A <cluster> can now be created with different speed values to represent pstates.
324 see examples/platforms/energy_cluster.xml for an example.
326 SimGrid (3.14.159) Released December 28. 2016
328 The previous release was only a crude approximation of a Pi release;
329 this one should be a bit better.
331 - Revert a last minute change that broke on Mac OSX.
332 - Fix the changelog and NEWS files.
333 - Improve the documentation, in particular of the routing module.
334 - Integrate some patches flying around in Debian.
336 SimGrid (3.14) Released December 24. 2016
339 * The whole documentation was reworked and reorganized. There is
340 still much room for improvement here, but we're on it.
343 * We now need python3 for our testing infrastructure.
344 * Model checking needs libevent
347 * Now works on FreeBSD
350 * Privatization now works on FreeBSD
352 * Privatization is now activated by default in smpirun
353 You can turn it off with -no-privatize if something goes wrong.
355 * Call-location tracing for SMPI.
356 You can add the exact location (filename / linenumber) of an MPI call to
357 your trace files and slow down or speed up the simulation between two
358 consecutive calls by using an adjustment file (see the documentation).
360 * Fixed computation of timings for MPI_Send, MPI_Recv & possibly also others
361 We've found a bug that prevented SMPI to account for MPI_Send, MPI_Recv
362 and others (in some cases) in a correct way. That is, the smpi/os, smpi/or
363 values were ignored in some cases. The timings of these functions can now
364 be significantly different.
366 * smpi/cpu-threshold:-1 should become smpi/simulate-computation:no
367 smpi/running-power is renamed to smpi/host-speed
369 * smpi/grow-injected-times option to enable or disable multiplication of the
370 timings injected in MPI_Iprobe, or MPI_Test. Enabled by default, which can
371 make simulation less precise (but also much faster).
373 * smpirun script should be (much) faster for large deployments.
375 * SMPI tracing : fixed issue with poor matching of send/receives.
377 * Replay : Fix broken waitall
379 New functions and features
380 * MSG_parallel_task_execute_with_timeout, to timeout computations.
382 Dropped / renamed functions and features
383 * msg_mailbox_t and associated functions. Use s4u::Mailbox instead.
384 - MSG_mailbox_is_empty() -> Mailbox::empty()
385 - MSG_mailbox_front() -> Mailbox::front()
386 - MSG_mailbox_get_by_alias() -> simgrid::s4u::Mailbox::byName(name)
387 - MSG_mailbox_get_task_ext() -> MSG_task_receive_ext()
388 - MSG_mailbox_get_task_ext_bounded -> MSG_task_receive_ext_bounded
389 - MSG_host_(get/set)_params -> MSG_vm_(get/set)_params
390 * Don't pass the free_f parameter to property related functions:
391 - MSG_host_set_property_value()
392 - MSG_as_router_set_property_value()
393 - MSG_storage_set_property_value()
394 * VM properties. Since msg_vm_t are msg_host_t, just use
395 MSG_host_get_property_value() and friends
396 * VM I/O related things:
397 - Ignored parameter of vm_create: core_nb, disk_path and disk_size.
398 - Unimplemented save/restore methods
399 * MSG_as_router_get_property_value() was redundent with
400 MSG_environment_as_get_property_value().
401 - Removed MSG_as_router_*propert*() functions
402 - Added MSG_environment_as_set_property_value() for consistency
403 * xbt heterogeneous dictionnaries (created with xbt_dict_new()).
404 Well, they are still there for now, but deprecated with a warning.
405 Please switch to xbt_dict_new_homogeneous() before this is removed
407 * Task affinity. Its intended behavior (that was very badly tested
408 and probably not really working) was deceiving what most users
409 would have hoped here.
410 * xbt_os_sem_get_value: unused internally, deprecated on OS X El Capitan
411 * Option network/coordinates is now useless and should be dropped.
414 * Added option storage/max_file_descriptors to allow more than 1024 files opened
417 * Added option maxmin/concurrency_limit to allow more than 100 processes per host
418 * Added Dragonfly topology support
421 * Add Exa- and Peta- units such as EiB, EB, Eib, Eb for size, and
422 EiBps, EBps, Eibps, Ebps for bandwidth.
423 They may become useful to some lucky ones.
426 * New functions: msg.Comm.waitAll() and msg.Comm.waitAny()
427 * ex/app_tokenring: new example, very similar to the MSG Token Ring
428 * ex/async_waitAll: new example, on asynchronous communications
431 * Memory usage should be decreased for simulations with a large number
432 of processes. This also helps for SMPI.
434 SimGrid (3.13) stable; urgency=low
436 The Half Release, a.k.a. the Zealous Easter Trim.
438 - We removed half of the lines, that were mostly experimental cruft.
439 v3.12 lasted 286000 lines of code, v3.13 is only 142000 lines
440 (not counting blanks and comments -- according to openhub.net)
441 - The internals are now compiled in C++ (and will soon be clean C++)
442 - We removed 75 klines of XML, 12 klines of Java, 5 klines of cmake,
443 59 klines of C, etc. We added only 29 klines of C++ in replacement.
445 * Backwards Compatibility breaks
446 - Removed Lua simulation bindings (switch to C or Java for that).
447 Lua can still be used to describe platforms
448 - Removed Java kernel plug-ins.
449 Will be reintroduced after the ongoing major internals reorg.
451 - the following functions were removed.
452 They were too specific and should be reimplemented in a generic
453 way, with filter function.
454 - MSG_task_listen_from_host
455 - MSG_mailbox_get_count_host_waiting_tasks
456 - MSG_mailbox_put_with_timeout was removed.
457 Please use MSG_task_send_with_timeout instead.
459 - the SD_application_reinit function was removed. It has been a noop for a while.
460 - The ACCESS_MODE of SD_workstation has been removed. This feature was not really usable and should soon be
461 replaced by a more flexible mechanism.
462 - The following functions thus do not exist anymore
463 - SD_workstation_get_access_mode
464 - SD_workstation_set_access_mode
465 - SD_workstation_get_current_task
466 - Basic estimation functions have been removed but can easily be replaced
467 - SD_route_get_communication_time => SG_route_get_latency() + amount / SD_route_get_bandwidth()
468 - SD_workstation_get_computation_time => amount / sg_host_speed()
470 - VM.setBound(int load) is now VM.setBound(double bound) to meet the MSG semantics.
471 Use VM.getSpeed()*load/100 for the legacy behavior.
473 - option enable_tracing was removed. It was not doing anything for a while.
474 - In the ModelChecker:
475 - the model-checker now ptraces the model-checked process which means
476 you cannot use a debugger on the latter anymore (we might make this
477 optional in the feature);
478 - removed soft-dirty page tracking;
479 - remove model-checked side snapshot management,
480 MC_snapshot() and MC_compare_snapshot();
481 - keep the MC_cut() function as a stub (it was not really working
482 in the previous release).
485 * All options are consistently in kebab-case. Old names are kept as alias.
488 * Switch to platform v4 format.
489 - Rename from 'power' to 'speed' the attributes describing the amount of
490 flops that a <host>, <peer>, <cluster> or <cabinet> can deliver per second.
491 - In <trace_connect>, attribute kind="POWER" is now kind="SPEED".
492 - In <host> and <link>, attributes availability and state are gone.
493 It was redundent with state and availability traces, and with peak values.
494 - In <cluster>, attributes availability_file and state_file are gone.
495 It was too complex and unused.
496 - Kill <gpu>. Was not doing anything.
497 - The DOCTYPE points to the right URL:
498 http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd
499 (the file at this address now documents the changelog since its v1)
500 - A warning is emitted for unit-less values (they are still accepted).
501 - speed. Default: 'f' or 'flops'. Also defined:
502 'Yf', 'Zf', 'Ef', 'Pf', 'Tf', 'Gf', 'Mf', 'kf'
503 'yottaflops', 'zettaflops', 'exaflops', 'petaflops', 'teraflops', 'gigaflops', 'megaflops', 'kiloflops'
504 - bandwidth. Default: 'Bps' bytes per second (or 'bps' for bits but 1 Bps = 8 bps)
505 Also defined in bytes: 'TiBps', 'GiBps', 'MiBps', 'KiBps', 'TBps', 'GBps', 'MBps', 'kBps', 'Bps'
506 And the same in bits: 'Tibps', 'Gibps', 'Mibps', 'Kibps', 'Tbps', 'Gbps', 'Mbps', 'kbps', 'bps'
507 - latency. Default: 's' second. Also defined:
508 'w' week, 'd' day, 'h' hour, 'm' minute, 'ms' millisecond, 'us' microsecond, 'ns' nanosecond, 'ps' picosecond
510 * bin/simgrid_update_xml can upgrade your files automatically (won't convert unit-less values)
511 tools/sg_xml_unit_converter.py may help (but it's just a warning and will probably ever be).
514 * s4u::Host is now the preferred public interface to the Host features.
515 sg_host_* functions are C bindings to the exact same behavior
516 MSG_host_* and SD_workstation_* are #define to the sg_host_* ones
519 * The examples were completely reorganized (in C and Java), for your browsing pleasure.
520 * Kill all deprecated functions (the ones you had when declaring MSG_DEPRECATED).
521 They were deprecated since a few years, and probably did not even compile anymore.
524 * The API has been profoundly modified to directly use the core objects instead of redefining its own.
525 SD_Workstation_t and SD_link_t are now sg_host_t and sg_link_t respectively.
526 Some functions have also been renamed for consistency. Backward compatibility is maintained, but users are
527 encouraged to update their codes. A list of the modified functions can be found at the end of
528 include/simgrid/simdag.h
531 * simgrid::simix::kernelImmediate() is the closure callback. It ensures that
532 the lambda or closure passed as a parameter will run in kernel mode.
533 All the callback functions should be rewritten to that interface at some point.
536 * Reorganizing and cleaning the internals all around the place.
539 * Remove old default barrier/bcast buggy algorithms (see #18407)
540 * Various bug fixes to handle more codes
541 * Remove the need for the --foreground option of smpirun (it is still
542 accepted for backward compatibility).
545 * Kill the setset data container: MC don't use it anymore.
546 * Kill the queue data container: it made more sense with GRAS.
547 * Kill the xbt_peer_t data type: it's useless without GRAS.
548 * Kill rm_cb feature of config sets: it was never useful.
549 * Kill graphxml parsing feature. It was not used.
550 * Kill the deprecated code protected by XBT_USE_DEPRECATED
552 - xbt_dynar_sort_strings(), when the content is char*
553 - xbt_str_parse_int / xbt_str_parse_double, wrapping strtol/strtod
554 They throw exceptions on invalid input;
555 * C++ support for declaring CLI flags (simgrid::config::Flag);
556 * class for abstracting different signal backends (simgrid::xbt::signal).
557 with no external dependencies (we need very simple signals).
560 * refactoring and cleanup of the code;
561 * ongoing process to cleanly separate the model-checking algorithms
562 from the code model-checking support.
564 -- Wed Apr 27 21:00:53 CEST 2016 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
566 SimGrid (3.12) stable; urgency=low
568 The Facelift Release.
571 * Require g++ v4.7 at least to not speak prehistorical C++.
572 * Require Boost 1.48 (for signal2 component).
573 * Java must be version 7 at least when activated.
574 * Builds on Windows again (including Java bindings).
575 * Tracing is now always enabled (no way to turn it out)
576 * Remove GTNetS. It was not working anyway.
577 * Various cleanups in the cmake scripts.
578 * Move headers around to sort them out on installed systems:
579 - instr/instr.h -> simgrid/instr.h
580 - instr/jedule/* -> simgrid/jedule
581 - simdag/datatypes.h was removed
582 - simdag/simdag.h -> simgrid/simdag.h
583 - msg/datatypes.h was removed
584 - msg/msg.h -> simgrid/msg.h
587 * Interface improvement:
588 - Rename MSG_host_is_avail(h) to MSG_host_is_on(h)
589 - Sanitize the interface in MSG_task_ module:
590 - Merge two functions that were close enough but misleading:
591 set_compute_duration(t) -> set_flops_amount(t)
592 get_remaining_computation(t) -> get_flops_amount(t)
593 - set_data_size(t) -> set_bytes_amount(t)
594 get_data_size(t) -> get_bytes_amount(t)
595 - Massive cleanups in the functions related to the energy
596 - MSG_host_get_pstate_number() -> MSG_host_get_nb_pstates()
597 - New: MSG_host_get_pstate()
599 - msg/energy/onoff: switching hosts on and off
601 * Interface improvement:
602 - Rename Host.isAvail() to Host.isOn()
603 - Rename Process.currentProcess() to Process.getCurrentProcess()
604 - Rename Task.setDataSize() to Task.setBytesAmount()
605 - Merge Task.getRemainingDuration() and Task.getComputeDuration() into Task.getFlopsAmount()
607 - #18874: Actually allows the GC to reclaim tasks
611 - SIMIX_process_throw: raises an exception in a remote process
612 * Refactoring: Separate sub-modules
613 - libsmx: the public interface, as libc in a real system
614 - popping: the strange dance that converts a user request into a kernel handling
615 - smx_context_*: the virtualization mechanisms that embed the user code
616 - smx_*: the handling of each simcalls
618 - simcall_host_set_power_peak_at -> simcall_host_set_pstate
619 * Rename smx_action_t into smx_synchro_t, making explicit that these
620 things are used to synchronize processes with their environment.
621 For example, a communication is a sort of synchronization involving
622 the communicating processes (that may block until the exchange) and
623 the platform. The same can be said from computations, etc.
625 - #18888: segfault when a process ends before its kill_time
629 - 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.
630 - MPI_Keyval*, MPI_Attr* functions, as well as MPI_Comm_attr*, MPI_Type_attr* variants (C only, no Fortran support yet)
631 - MPI_Type_set_name, MPI_Type_get_name
632 - MPI_*_c2f and MPI_*_f2c functions
633 - MPI_Info_* functions (beware, get_nthkey may not follow the insertion order)
634 - MPI_Pack, MPI_Unpack and MPI_Pack_size functions
635 - Activate a lot of new tests from the mpich 3 testsuite
637 - Constant times can be injected inside MPI_Wtime and MPI_Test through options smpi/wtime and smpi/test
638 - InfiniBand network model added : Based on the works of Jerome Vienne
639 http://mescal.imag.fr/membres/jean-marc.vincent/index.html/PhD/Vienne.pdf
640 - When smpi/display_timing is set, also display global simulation time and application times
641 - Have smpirun, smpicc and friends display the simgrid git hash version on --git-version
642 * Collective communications
643 - 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
644 - 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/).
645 - Support for Rabenseifner Reduce/Allreduce algorithms (https://fs.hlrs.de/projects/par/mpi//myreduce.html)
647 - Replay now uses algorithms from wanted collective selector
648 - Replay can be used with SMP-aware algorithms
649 - Memory occupation of replay should now be contained (temporary buffers allocated in collective algorithms should be shared between processes)
650 - 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.
652 - [#17799] : have mpi_group_range_incl and mpi_group_range_excl better test some corner cases
653 - Correctly use loopback on fat-tree clusters
654 - Asynchronous small messages shouldn't trigger deadlocks anymore
655 * Energy/DVFS cleanup and improvement
656 - smpi_set_host_power_peak_at() -> smpi_set_host_pstate()
657 - new: smpi_get_host_pstate()
660 - "Full" network optimization flag was broken since Surf++
661 - Better handling of precision flags in maxmin
662 - Fix bug causing sometimes "Impossible" errors
663 - Properly pass cluster properties to included hosts
664 * Improvement of the Energy plugin.
665 - Always update the consumption before returning that value
666 - New property: watt_off to denote the dissipation when the host is off
667 - New functions getWattMinAt and getWattMaxAt to retrieve the
668 dissipation of pstates that we are not currently at.
669 * Java: class NetworkLink renamed to Link
670 * New function: simcall_process_get_kill_time()
671 * Massive rename s/workstation/host/
672 - That's intrusive, but that's good for the project consistency. Sorry.
673 - Change config option "workstation/model" into "host/model"
676 - Add a xbt_heap_update function, to avoid costly xbt_heap_remove+xbt_heap_insert use
677 - Add a xbt wrapper for simcall_mutex_trylock (asked in [#17878])
678 - Add two new log appenders : rollfile and splitfile. Patch by Fabien Chaix.
679 - xbt_dirname and xbt_basename for non-POSIX systems
681 * The model checker now runs as a separate process.
682 * The model checker runs must now be launched with the new simgrid-mc program.
683 * Record/Replay: the MC can display a textual representation of a path in the
684 execution graph. It can then be replayed outside of the model checker.
686 -- Mon Oct 12 06:02:41 CEST 2015 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
688 SimGrid (3.11) stable; urgency=low
693 * Normalizing pointers addresses tool for better diff between logs
696 * Add cloud examples using new VMs
697 - examples/msg/cloud/two_tasks_vm.tesh
698 - examples/msg/cloud/simple_vm.tesh
699 - examples/java/cloud/cloud.tesh
700 - examples/java/cloud/migration/migration.tesh
701 * Add java surf examples:
702 - examples/java/surfPlugin/surf_plugin.tesh
703 - examples/java/reservationSurfPlugin/reservation_surf_plugin.tes
704 - examples/java/surfCpuModel/surf_cpu_model.tesh
705 * Add SMPI+MSG example:
706 - examples/smpi/smpi_msg_masterslave/
711 - msg task destroy cancel test
712 - msg_host on/off test
713 * Move all tests in testsuite to teshsuite (adding tesh files)
714 * Restructure teshsuites
715 - one folder for each kind of test
716 * Restructure AddTests.cmake
718 - structure the order of tests (with sections)
721 * Add virtual machine
722 - creation of a VM on a PM
723 - migration of a VM from a PM to another PM
725 - MSG_process_join(msg_process_t process, double timeout)
726 - msg_bar_t MSG_barrier_init(unsigned int count)
727 - int MSG_barrier_wait(msg_bar_t barrier)
728 - void MSG_barrier_destroy(msg_bar_t barrier)
729 - msg_as_t MSG_environment_as_get_by_name(const char * name)
730 * New option "msg/debug_multiple_use" to help debugging when a task is used
733 - Improvements and finalization of MSG_storage, MSG_file APIs and their
735 - Increase code coverage in test suites
739 * Protect context stacks against stack overflow. The number of protected memory
740 pages allocated on the top of each stack (1 by default) can be configured
741 with the new command line option --cfg=contexts/guard_size:<value>.
742 * Simcalls are now generated by a python script that
743 - generates files included by SimGrid
744 - checks that all the functions exist, and proposes prototypes
746 - remove sem_destroy, file_set_data, comm_destroy, vm_set_state,
747 host_set_data, host_get_data
749 - simcall_process_join(smx_process_t process, double timeout)
750 * Fix bug where sleeping processing could not be suspended.
753 * Translate surf models from C to C++
754 - Generic classes for all models: Model, Resource, Action
755 - A generic interface for each kind of model (CPU, Network, Storage
756 Workstation, WorkstationVM)
758 * Translate surf routings from C to C++
759 * Add callbacks using sigc++ or boost::signals2
760 - Add callback functions for resource creation/destruction
761 - Add callback functions for action state change
762 - Handle Energy as a plugin
763 * Replace swag by boost::intrusive
764 * Add new routing models for clusters. For documentation, see
765 http://simgrid.gforge.inria.fr/simgrid/latest/doc/platform.html#pf_cluster
766 - tori, with topology="TORUS" and topo_parameters="ndim1,ndim2,...,ndimn"
767 parameters for cluster tag
768 - Fat trees, with topology="FAT_TREE" and
769 topo_parameters="h;m1,...,mh;w1,...,wh;p1,...,ph" parameters for cluster tag
770 - see examples/platforms/torus_cluster.xml and
771 examples/platforms/fat_tree_cluster.xml
775 * Hostfiles support host:nb_processes construct to deploy several processes on
777 * Collective communication algorithms should not crash if used with
778 improper number of nodes and report the error.
779 * SMPI now partially supports MPI_Topologies : MPI_Cart_create, MPI_Cart_shift,
780 MPI_Cart_rank, MPI_Cart_get, MPI_Cart_coords, MPI_Cartdim_get,
781 MPI_Dims_create, MPI_Cart_sub are supported.
782 * New interface to use SMPI programmatically (still depends on MSG for
783 some parts, see examples/smpi/smpi_msg_masterslave) :
784 - SMPI_app_instance_register(const char *name, xbt_main_func_t code,
788 * Global variables privatization in MPI executables is now performed at runtime
789 with the option smpi/privatize_global_variables (default:no).
790 Limitations : Linux/BSD only, with mmap enabled. Global variables inside
791 dynamic libraries loaded by the application are not privatized (static
792 linking with these libraries is advised in this case)
795 * Options defined in XML work correctly now.
798 * New cmake option, enable_lib_in_jar, to control whether native libraries are
799 copied into simgrid.jar or not (ON by default). Use this option if you want
800 to reduce the size of the installed simgrid.jar, *and* the native libraries
801 are kept installed elsewhere.
802 * Surf binding with SWIG (code generated in maintainer mode only):
803 - plugin to handle callbacks
804 - CPU model only for the moment
807 * Supernovae build mode is definitively removed. It was used to improve
808 inlining and inter-module optimizations. It is nowadays superseded by
809 link-time optimizations commonly available in compilers.
810 * Update ns-3 find lib. Bindings for ns-3 should work again now.
811 * Add boost dependency for surf++
812 * Add new macro for tests
813 - ADD_TESH(name <tesh_args>)
814 - ADD_TESH_FACTORIES(name "thread;ucontext;raw" <tesh_args>)
818 - xbt_bar_t XBT_barrier_init(unsigned int count)
819 - int XBT_barrier_wait(xbt_bar_t barrier)
820 - void XBT_barrier_destroy(xbt_bar_t barrier)
821 * Make the xbt_os_time module public
823 -- Sat May 31 22:39:38 CEST 2014 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
825 SimGrid (3.10) stable; urgency=low
827 The Clean Diaper Release, a.k.a. SimGrid is leak-free.
830 * Reintegrate Java to the main archive as desynchronizing these
831 package is not acceptable anymore (Java is now considered stable)
832 * Add explicit synchronization facilities through semaphores
833 * Bug fix: Task.setDataSize() only changed the C world, not the value
834 cached in the Java world
837 * Dramatically change the way files are handled. API and internals changed, but
838 this part of MSG was not considered as production grade either.
839 * Add explicit synchronization facilities through semaphores
840 * Add a new function MSG_host_get_process_list()
841 * Preliminary DVFS support (see examples/msg/energy/ for details)
844 * SMPI is now included directly in the libsimgrid as the windows
845 linker doesn't force us on splitting it anymore.
846 * Improvements of the SMPI replay tool:
847 - Most of the collective communications are now rooted in the same process as
848 in the original application.
849 - Traces now rely on the same MPI data type as the application (MPI_BYTE was
850 used until now). Multiple data types can now be used in a trace.
851 - The replay tool now supports traces produce either by TAU or a modified
853 - Bug Fix: the compute part of the reduce action is now taken into account.
854 - Gatherv collective is now supported
855 - SimGrid (SMPI for now) can generate replay traces as well. Option -trace-ti
856 of smpirun outputs time independent traces for the current run. One file
857 is created per process. If too many processes are simulated, this behavior
858 can be changed to one file for all processes by using the
859 tracing/smpi/format/ti_one_file flag
860 * smpirun generates the host file if needed (with given host count and platform)
861 * Integration of more than 100 STAR-MPI, MPICH, OpenMPI collective algorithms
862 - allows to select one in particular with --cfg=smpi/coll_name:algorithm
863 - allows to use the decision logic of OpenMPI(1.7) or MPICH(3.0.4) by setting
864 --cfg=smpi/coll_selector:(mpich/ompi)
865 * Support for new functions : MPI_Issend, MPI_Ssend, Commutative operations in
867 * Add a --cfg:tracing/smpi/internals option, to trace internal communications
868 happening inside a collective SMPI call.
869 * Fix the behavior of complex data types handling.
870 * Make MPI_Wtime another synchronization point to take computations into
872 * Replace MPICH-1 test suite by the one from MPICH 3.0.4. Can be built using
873 enable_smpi_MPICH3_testsuite flag in cmake. Run with ctest.
874 * Add all missing Fortran bindings, SMPI should work with Fortran 90
875 (no privatization of global variables yet)
876 * Preliminary DVFS support (see examples/smpi/energy/ for details)
879 * Verification of liveness properties is now available for SMPI applications
880 (in addition to MSG applications)
881 * Bugged examples using SMPI in examples/smpi/mc/
882 * Add --cfg=model-check/visited option. Allows the verification of infinite
883 programs. Detection of loops in the execution thanks to the system state
884 comparison and reduction of the state space to explore. Can be combined with
885 DPOR for safety properties.
888 * Allow to change SimGrid configuration (see --help) within the code
889 thanks to SD_config() as it can be done in MSG.
890 * Add a new function SD_task_set_amount() upon user request.
893 * Handle units for values (10ms, 10kiloflops, 10Bps, 1GB, ...)
894 * Remove rule based routing (no more PCRE dependency)
895 * Add a limiter_link option to cluster tag, to specify a maximum reachable
896 bandwidth in fullduplex mode when it is less than twice the nominal bandwidth.
897 * Add a loopback_bw and loopback_lat options to cluster tag.
898 * Fix the peer tag that could not be mixed with other AS within a Vivaldi
899 routing. Now peers are encapsulated in an AS and have their own private
900 router but this is transparent.
903 * Our own implementation of getline is renamed xbt_getline, and gets
904 used even if the OS provide a getline(). This should reduce the
905 configuration complexity by using the same code on all platforms.
906 * New type: xbt_cfg_elm_boolean.
907 * Allow to use yes/no for boolean configuration options in the command line.
908 * Allow to disable SimGrid cleanups at exit from command line option.
909 There are situations where one may want a simulation to end with an exit.
910 Unfortunately, calling exit may cause SimGrid to segfault, which is quite
911 annoying when scripting around the simulator. Adding a
912 --cfg=clean_atexit:no allows to circumvent this issue.
915 * Lots of memory leaks were corrected in this release.
916 There is no known memory leaks anymore, in all of our 600+ tests.
917 * New command line option --version, to get SimGrid version information.
918 Packagers may want to add extra words to SIMGRID_VERSION_EXTRA defined in
920 * Supernovae builds are deprecated, and expected to be removed in the next
923 -- Sun Nov 17 00:26:44 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
925 SimGrid (3.9) stable; urgency=low
927 The Grasgory release: GRAS is really dead now.
929 * Complete overhaul of the internal host structures scheme.
932 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
933 was considered as experimental and badly maintained since then.
934 * Keeping it was thus a trap to our potential users, that could take
935 it instead of MSG or SMPI by mistake despite is pity state.
936 * GRAS seems to have very few users (if any), and no one volunteered
937 to maintain it further. It also induces a lot of XBT code (for
938 portability sake), that must be maintained too.
939 * For all these reasons, we killed GRAS. If someone wants to revive it
940 in the future, don't cry, our git history still remembers of GRAS.
943 * Major overhaul. Merge our documentation again as time proved that
944 splitting it was really not helping our users.
945 * Further improve the developer documentation to help newcomers
946 hacking on SimGrid itself. The user documentation (and in
947 particular, the beginner documentation) is still in a sorry state.
950 * Now works on Windows too!
951 * Much more extensive test suite, from MPICH
954 * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
955 (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
956 dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
957 * Bug fix: let task be scheduled when the last dependency to be solved is
958 a control dependency.
959 * Remove SD_load_environment_script function.
960 Use the C sg_platf function if you want to declare a platform
964 * New function: MSG_process_get_number()
965 * Old function documented: MSG_config()
966 * Remove MSG_load_platform_script function
967 Use the C sg_platf function if you want to declare a platform
971 * Change the default value of the TCP_gamma constant (maximal size of TCP
972 congestion window) to a more realistic 4MiB value. If you notice changes in
973 your simulation results, you can fall back to the previous 20k tiny window
974 by adding --cfg=network/TCP_gamma:20000 on command line.
975 * (Hopefully) fix a bug wrt periodic availability and state traces
976 * Bug fix: use default values at start when first event in availability/state
977 trace is not at time 0.
980 * remove the "new_" part of function name sg_platf_new_trace_connect
981 (resulting in sg_platf_trace_connect), since it does not create
985 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
986 use case where it's really mandatory, and maintaining it was a pain in
988 * New: xbt_fifo_search(), search an item with a user-provided
989 comparison function instead of dumb pointer comparison.
992 * Fix the lua deployment:
993 Use `simgrid.init_application()` before deployment instead of
994 `simgrid.msg_register_application()` after.
997 * Transfer the tracing files into the corresponding modules.
999 -- Tue Feb 5 11:31:43 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1001 SimGrid (3.8.1) stable; urgency=low
1003 The "we are told that some people want to also *install* the simgrid
1006 * Add missing file "tesh.1" to the archive.
1008 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1010 SimGrid (3.8) stable; urgency=low
1012 The Psssshiiiit release: SimGrid jumps into the Cloud.
1015 * Add an experimental interface to manipulate VMs. They are mainly
1016 process groups with very few intrinsic semantic, but they should
1017 allow you to build the semantic you want easily.
1018 * New function: MSG_host_set_property_value()
1019 * New function: MSG_process_on_exit(). To clean memory in all cases.
1020 * Bug fixes that made the host (and link) failures unusable.
1021 * Add a way to auto-restart process when the host in which they are
1022 executing comes back (ON_FAILURE="RESTART" on deployment file,
1023 MSG_process_auto_restart_set).
1024 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
1025 please stop using the old ones, they are DEPRECATED.
1027 * Deprecate functions MSG_global_init() / MSG_global_init_args()
1028 Please use MSG_init() instead. (reducing the amount of entry
1029 points in the library helps us).
1030 * Make it impossible to link against the wrong version of the lib
1031 * Deprecate MSG_clean(). No need to call it anymore.
1032 * Function MSG_get_host_number() is not deprecated anymore.
1035 * Split the doc into a user guide and a reference guide.
1036 * Start a developper guide to help people hacking on SimGrid.
1039 * Enable tracing by default. This modules rocks you should use it.
1040 * Remove option custom_flags. Now use environment variables CFLAGS
1042 * Use default cmake things to detect lua instead of home grown ones.
1043 * New option "enable_mallocators" to disable mallocators, for debugging
1044 purpose ("on" by default).
1047 * Bug fixes around the resource failures: don't let the processes
1048 survive the host they are running onto.
1049 * Add an interface to auto-restart processes when the host in which they are
1050 executing comes back.
1051 * Ensures that SIMIX_clean is called automatically. It's not part of
1052 the public interface anymore (bindings should be updated).
1055 * Bug fix for when SD_Simulate is called with a positive value: be careful
1056 when comparing doubles. Sometimes they are different for non significant
1058 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
1059 parallel task whose initial work is distributed among host according
1060 to the Amdahl's law. Such tasks are created with a parameter alpha
1061 that corresponds to the non-parallelizable part of the computation.
1062 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
1063 between two sets of workstations assuming a 1D block distribution (each
1064 workstation owns a similar share of data) on both sides.
1066 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
1067 Data redistribution will be automatically scheduled once parent and child
1068 are both scheduled. The filling of computation_amount and
1069 communication_amount structures is now done seamlessly thanks to the chosen
1071 * New function SD_workstation_dump to display various information
1072 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
1073 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
1074 bandwidth on the route onto which the task is scheduled and the amount of
1076 To divide the nominal bandwidth by 2, the rate then has to be :
1077 rate = bandwidth/(2*amount)
1078 * Compute tasks that have failed can now be rescheduled and executed again
1079 (from their beginning)
1080 * Increasing source code coverage (src/simdag is now covered at 95.8%
1084 * Re-implement time-independent trace replay using SMPI (at the
1085 smpi_smp_* level) instead of MSG. This should replace
1086 examples/msg/actions/actions.c
1087 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
1088 hindexed and structs)
1089 * Implement the exchange of non-contiguous data.
1090 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
1091 * Correct behavior of smpi/sender_gap and set its default value to 0
1092 * Add option to asynchronously send small messages to allow better
1093 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
1094 specifies the size in bytes under which messages will be asynchronously sent.
1095 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
1096 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
1099 * New C interface to define a platform: XML is now optional.
1100 For more info, please check include/simgrid/platf.h.
1101 * New interface to define random platforms from the C:
1102 For more info, please check include/simgrid/platf_generator.h and
1103 examples/msg/masterslave/masterslave_platfgen.c
1104 * Export a sg_cmdline dynar containing all the arguments we got from
1108 * Two new tracing options for adding comments to trace file so you
1109 can track your experiments (see --help-tracing for details).
1110 * New option to generate a impoverished trace file (--cfg=tracing/basic:1)
1111 * Adding the SimGrid version that generated the trace file as a comment.
1112 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
1113 * Fix to avoid key clashes on Paje links
1114 * Other minor fixes related to the Paje specification
1117 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
1118 and renamed to xbt_str_hash() and xbt_str_hash_ext().
1119 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
1120 * Greatly improve the robustness of mmalloc to user errors (such as
1121 using an area after freeing it, or freeing it twice)
1123 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1125 SimGrid-java (3.8.1) stable; urgency=low
1127 * New module: org.simgrid.trace.Trace (SimGrid trace bindings)
1128 Warning: all methods are visible, but only some of them are
1129 implemented so far. Check the source (src/jtrace.c)
1130 for further information.
1131 * New module: org.simgrid.msg.File (SimGrid File management functions)
1132 * New Module: org.simgrid.msg.VM (SimGrid interface to mimick IAAS clouds)
1133 * Change the meaning of Process.restart: now restart the process from
1134 the begining, like MSG_process_restart in C.
1135 * Add Process.setAutoRestart: handling of process restart when failed
1137 * Add Process.getProperty, Host.getProperty, Host.getProperty: allows
1138 you to retrieve the properties of the processes/hosts
1139 * Deprecate Msg.clean(): you can just forget about it now.
1140 * New function Process.getCount(), that only works when compiling
1141 with the not yet released version 3.9 of the C library.
1143 * New context factory based on Coroutines. It mandates a modified JVM
1144 but then, the simulations run about five times faster, and there is
1145 no limit to the amount of processes (beside of the available memory).
1147 -- 2012-12-04 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1149 SimGrid (3.7.1) stable; urgency=low
1152 * Restore the prototype of MSG_process_create_with_environment() to
1153 the pre-3.7 situation by removing the kill_time argument.
1154 * Add a MSG_process_set_kill_time() function instead.
1157 * Fix weird behaviors when dealing with parallel tasks.
1160 * Simgrid is now built as a dll.
1161 * Simgrid-java now works on Windows.
1162 * Simgrid-Java is now included into Windows package.
1165 * First pre-build package for MacOSX.
1168 * Fix compilation when using MSG_USE_DEPRECATED.
1169 * Fix some compilation issues on Macs and Windows.
1170 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
1171 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
1173 We discovered that the Lua console is broken, but we are missing the
1174 manpower to fix it right now. The problem existed in 3.7 too, so we
1175 are not blocking the release for that. Sorry if you depended on this
1176 feature, any help would be really welcome.
1178 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1181 SimGrid-java (3.7.1) stable; urgency=low
1183 The "Java aint got to be bloated and slow" release
1186 * Various internal cleanups and performance improvement
1187 Simulations are expected to run up to twice faster or so
1188 * Make Process.kill(process) an instance method, not a static one
1189 * User processes are not java.lang.Thread subclasses.
1190 This breaks the compatibility (sorry), but previous API was
1191 brain-dead, making it impossible to have non-trivial
1192 initializations in the process constructor.
1193 * Require a full constructor per Process sub-class.
1194 Kinda breaks the compatibility (sorry), but this allows a much more
1195 efficient way to launch the processes at simulation startup.
1196 * Do not embeed our version of semaphores, java 1.5 can be considered
1197 as sufficiently prevalent for us to not dupplicate its features.
1201 * Add examples for almost every part of the API
1202 We spotted and fixed a lot of bugs in the process
1204 * New module: asynchronous communication API
1205 * New function: Process.sleep()
1206 It takes milliseconds as argument, just as java.lang.Thread.sleep()
1207 * New module: org.simgrid.msg.Mutex (SimGrid mutexes)
1208 * New module: org.simgrid.msg.RngStream (RngStreams random generators)
1210 -- 2012-06-12 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1212 SimGrid (3.7) stable; urgency=low
1214 The "spring cleanups (before the next Big Project kicks in)" release.
1217 * We can specify the SMPI latency/bandwidth factor with command line
1218 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
1219 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
1220 You can also use the "config tag" from platform file by adding this line
1221 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
1222 (see "example/platforms/tag_config.xml" to use "config tag").
1223 Note that the command line supersedes the platform file configuration.
1224 * Change the correction factors used in LMM model, according to
1225 the latest experiments described in INRIA RR-7821.
1226 Accuracy should be improved this way.
1227 * Use the partial invalidation optimization by default for the
1228 network too. Should produce the exact same results, only faster.
1229 * Major cleanup in surf to merge models and split some optimization
1230 mechanisms from the core of the models. As a result you can now
1231 specify which model to use (e.g., --cfg=network/model:LV08
1232 --cfg=cpu/model:Cas01) and which optimization mode to use
1233 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
1234 Incompatible combinations should err at initialization. See
1235 --help-models for the list of all models and optimization modes.
1236 * The CLM03 workstation model was dropped for simplicity because it
1237 used the deprecated CM02 network model. Use default instead.
1238 * Rename the TCP_gamma configuration option to network/TCP_gamma
1239 * Rename the coordinates configuration option to
1240 network/coordinates, and document it
1241 * Use now crosstraffic keyword instead of the terribly misleading
1242 fullduplex keyword. It is activated by default now in the current
1243 default model, use --cfg=network/crosstraffic:0 to turn it off.
1244 * Ongoing refactoring the model parsing to make XML files optional
1245 See include/simgrid/platf.h for details (still to be completed)
1248 * Major overhaul of the documentation. Almost instructive now :/
1249 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
1250 functions and friends. This interface was considered as
1251 deprecated since over 2 years, it's time to inform our users that it is.
1252 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
1253 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
1254 use these (crappy) functions in your code.
1255 These functions will be removed soon. Stop using them now.
1256 * Deprecate MSG_get_host_{table,number}
1257 Implement MSG_hosts_as_dynar() instead.
1258 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
1259 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
1262 * Stabilize the parallel execution mode of user contexts
1263 * Introduce configuration variables to control parallel execution:
1264 - contexts/synchro: Synchronization mode to use when running
1265 contexts in parallel (either futex, posix or busy_wait)
1266 - contexts/parallel_threshold: Minimal number of user contexts
1267 that must be part of a scheduling round to switch to parallel
1268 execution mode (raw contexts only)
1269 * Fix bugs that prevented to use suspend/resume along with
1270 synchronization structures.
1271 * Fix bugs in process termination that lead to invalid memory access
1272 in very specific conditions.
1275 * Introduce a parallel mode for the models (controlled by surf/nthreads
1276 configuration item). In our tests, running the models in parallel
1277 never lead to any speedups because they are so fast that the gain
1278 of computing each model in parallel does not amortizes the
1279 synchronization costs, even when ultra fast futexes are used.
1280 This is released anyway because YMMV.
1283 * Performance boost by using a swag internally to compute the set of
1284 tasks that are finished and should constitute the return value of
1288 * Enable it by default now that it is considered rather stable.
1291 * Documentation of the tracing functions.
1292 * Performance gains when tracing categorized/uncategorized resource
1293 utilization by avoiding calls to get route when updating resource
1294 variables. LMM constraints are being used instead.
1295 * API changed to set task categories. Use MSG_task_set_category instead
1296 of TRACE_msg_set_task_category, and SD_task_set_category instead
1297 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
1298 * Bugfix for graphicator, routes not correctly obtained, memory leaks
1299 * Examples for link user variables added (see at examples/msg/tracing/)
1300 * Deprecated function TRACE_msg_set_process_category completely removed
1301 * Trace header updated according to the latest Paje file format
1302 * Tracing network lazy updates, no longer obligate users to use full updates
1303 * --cfg=tracing/platform:1 also registers power/bandwidth variables
1304 * Experimental: let user code declare/set/push/pop application states for hosts
1305 * API changed to allow the manual creation of graph configuration files
1306 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
1309 * Improve the API of Lua MSG bindings, using the Lua spirit.
1310 * Each simulated process now lives in its own Lua world (globals are
1311 automatically duplicated). It helps writing simulators. Will allow
1312 to run Splay programs within SimGrid in the future.
1313 * Add a Chord example in Lua, equivalent to the MSG one.
1316 * Start the implementation of a solution to express temporal
1317 properties, not only local assertions. This is still an
1318 experimental work in progress, stay clear from it to be safe.
1322 - Add new runtime parameters --help-logs and --help-log-categories
1323 to display information about supported logging parameters and
1325 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
1326 don't exists anymore.
1327 * Mallocators: allow value NULL for the reset function.
1329 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
1330 create homogeneous dictionaries, where all the elements share the
1331 same free function. Non homogeneous dictionaries will be
1332 deprecated in the next release.
1333 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
1334 - Multi-level dictionaries are deprecated.
1336 - new function xbt_dynar_search_or_negative() that is useful when
1337 you have less than 2 million elements in your dynar and don't
1338 want of the extra complexity of catching exceptions when the
1339 element is not found.
1341 - Make xbt_os_thread module (for thread portability) public.
1342 Documentation is still to come, sorry.
1344 - Cleanups and simplifications to make it maintainable again.
1345 - Exotic features (such as memalign and valloc) were removed.
1346 - The metadata were extended and improved so that the
1347 model-checker becomes able to explore and inspect the heaps.
1348 - This may induce a performance drop when enable_model-checking is
1349 ON in cmake (even if it's not used in the simulation), but it is
1350 necessary at this point to get MC working.
1352 Turn model-checking OFF if simulation performance matters to you.
1353 Not enabling it at runtime is not enough, disable it in cmake.
1355 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1358 SimGrid (3.6.2) stable; urgency=low
1360 The "Not coding new stuff allows to polish old things" release.
1363 * New bindings to the NS3 packet level simulator (experimental)
1364 * Use the raw (efficient) execution contexts instead of the sysv
1365 (portable) ones when possible.
1366 * libpcre is now mandatory in any cases since not using it led to
1367 severe performance loss and possibly other issues
1368 * Update the XML platforms:
1369 - G5K: include the latest machine in Nancy
1370 - GridPP and LCG: new platforms
1371 * Documentation was partially updated, at least (more to come)
1373 Bug fixes, cosmetics and small improvements
1374 * Free terminated processes before the end of the simulation to avoid
1375 exhausting the memory of users having very dynamic amount of
1377 * Bug fix and cosmetics about canceling non-running tasks
1378 * Bug fix about the dot loader's issues when using libcgraph
1381 * Create an installer for windows with nsis (amd64 and win32)
1382 - Add an hello world project to illustrate simgrid project creation.
1383 - Embed libpcre into the Simgrid installer to avoid
1384 its compilation burden
1385 * The raw execution contexts should work on Apple now
1386 * Port to Windows 64 bits
1387 - Sysv contexts now have an implementation for this arch
1388 - GRAS communication features now support this arch
1389 * Drop support for borland compiler on windows
1390 - this code was not maintained, and we kinda depend on gcc nowadays
1391 * Fix portability issues on kfreebsd/gnu: build error about semaphores
1392 * Fix portability issue on unstable ubuntu: linker became picky on
1395 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1397 SimGrid (3.6.1) stable; urgency=low
1399 The "Oops, we broke Macs too" release
1402 * Fixed contexts detection so that raw ones are used when possible
1403 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
1404 leads to a strange error, with user code segfaulting sometimes when
1405 the generated code is not perfectly aligned (which is not
1406 controllable from the user side, depends on the amount of code)
1409 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
1411 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1413 SimGrid-java (3.6) unstable; urgency=low
1416 * Split of every thing from simgrid v3.5 into a separate package.
1418 -- 2011-10-05 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1420 SimGrid (3.6) stable; urgency=medium
1422 The Summer Release, also known as the "OMG! They Killed Kenny!" version
1425 * Bindings now constitute their own package, separated from the main one.
1426 Rationale: reduce our maintenance nightmare by reducing the module coupling
1427 They will soon be released on their own on gforge.
1429 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
1430 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
1432 GRAS: It is not considered as stable anymore, but experimental. Sorry.
1433 * It's not quite deprecated for now because we have no replacement,
1434 but it may soon become the case.
1437 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
1438 * Fortran: New user-level cache variable to store the rank of the running
1439 process. This improves performance by an order of magnitude.
1440 * C: New coccinelle script to automatically locate and modify global and
1441 local static variables.
1442 * Improved SMPI network model with a sender-side gap to account for multiple
1446 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
1447 only say if a communication is finished, no matter whether it succeeded or
1448 failed. You can call MSG_comm_get_status() to know the status of a finished
1450 * New function MSG_task_dsend() to send a task and detach it. When a
1451 communication is detached, you are never notified of its success or failure
1452 and the memory is released automatically once it is finished. This function
1453 is useful when you don't care about the end nor the success of a
1455 * Change the prototypes of action replay. Sorry for inconvenience,
1456 but this is really more efficient this way (and to adapt your code,
1457 you just have to fix the initialization, that shouldn't be too long)
1458 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
1459 ever managed to do anything useful with it.
1460 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
1461 takes a dynar of communications. It returns immediately and gives the
1462 index of a finished communication (if any).
1463 * New example: a basic implementation of the Chord P2P algorithm.
1466 * New model for multi-core CPUs. You can now use the core attribute to
1467 precise the number of cores of a host. This is a basic model. Every
1468 process running on the host receives at most the power provided in
1469 the DTD (throughput<=power). Total throughput of process cannot exceed
1471 * New peer tag. This peer tag creates a tiny AS comprising a host and a
1472 router linked by an up-link and a down-link (possibly asymmetrical).
1473 This kind of pattern allows to easily build last-mile model style platforms.
1474 Aggregating such patterns in a rule-based AS is thus the technique of
1475 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
1476 * New model for Vivaldi routing. We transformed the Vivaldi network model
1477 into a Vivaldi routing model (based on the rule-based model). This allows to
1478 combine Vivaldi based latencies with last-mile platforms.
1481 * Added a check for NaN of IEEE754 infinite in the double entries of
1483 * Introduce a new context factory "raw", highly inspirated from the
1484 ucontext factory, but using manually crafted functions in assembly to
1485 do the work in an efficient manner.
1486 * Allow to change the used context factory at run time, not only at
1487 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
1488 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
1489 contexts at runtime (only with raw contexts or ucontexts).
1490 * Completely rewrote this module to allow parallel execution of user
1491 processes. Use --cfg=contexts/nthreads:N to execute user processes
1492 with N parallel threads (the default is 1, meaning no parallelism).
1493 * Allow to decide dynamically between sequential and parallel modes.
1494 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
1495 processes in parallel only when their number is greater than or equal to P
1497 * Added a check for NaN of IEEE754 infinite in the double entries of
1501 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
1502 won't output the state of processes when interrupted with Ctrl-C
1503 * Add a new function xbt_dynar_to_array that transforms a dynar into a
1504 NULL-terminated array. This may solve backward compatibility issues
1505 due to the change to return type of SD_simulate. See also:
1506 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
1507 * Add new macros with variable number of arguments.
1508 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
1509 - in xbt/asserts.h: xbt_assert
1510 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
1511 - in xbt/ex.h: THROWF and RETHROWF.
1512 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
1514 * Change xbt_die() to accept a format string with arguments, just like printf.
1515 * New data structure: xbt_lib_t, like a dict but more general and with better
1519 * New configuration options
1520 Options triva/categorized and triva/uncategorized can be used to generate
1521 graph configuration files for Triva visualization tool.
1522 * Configuration option tracing/platform is renamed to tracing/categorized
1523 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
1524 * New TRACE_user_link_variable interface:
1525 User provides the name of the link and the tracing variable to attach to it
1526 * the declaration of tracing categories must be done after the environment
1528 * simpler tracing interface, just one way to declare categories
1529 TRACE_category or TRACE_category_with_color, it is up to you
1530 * links in the trace file are again identified by their names
1531 * trace contains the full platform hierarchy exactly as declared using the ASes
1532 * Options tracing/msg/[task|process]:1 groups the process by hosts
1533 for both cases, tasks and processes must have names that are unique during the simulation
1534 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
1535 * The experimental option tracing/msg/volume is deprecated
1536 its functionality may be reincorporated if needed
1538 The tracing generates a trace file with unordered timestamped events,
1539 because of the way the core simulator (surf) works. A script available
1540 at the tools directory (fix-paje-trace.sh) can be used to put the events
1541 in order. We have changed the tracing so it can generate ordered timestamped
1542 events in the final trace, but depending on the simulator (and how much time
1543 is simulated) that can lead to a huge memory utilization. It is deactivated
1544 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
1546 Build Infrastructure
1547 * Define a SIMGRID_VERSION macro in simgrid_config.h.
1548 - We are trying hard to keep the API stable, but it may happen that
1549 some things change (we're a research project after all, not a
1550 nuclear plant operating system). If such things should happen, you
1551 could rely on that macro to adapt.
1552 - current value: 30600 for 3.06.00, aka 3.6
1553 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
1554 a number that can be compared with SIMGRID_VERSION.
1555 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
1556 assertions and verbose/debug logging events are disabled at compile time.
1558 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1560 SimGrid (3.5) stable; urgency=medium
1563 * New feature to any SimGrid-based simulator: Model-Checking
1564 Check SIN#1 for more details.
1567 * New Model SMPI (three-interval linear regression for correction factors)
1568 See RR-7426, available at http://hal.inria.fr/inria-00527150
1569 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
1570 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
1571 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
1572 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
1573 * See also src/smpi/README
1578 - Tracing API changes: TRACE_start and TRACE_end should not be called
1579 by user-code. They are automatically called by simulators created
1580 with SimDAG, MSG and SMPI if the toolkit is compiled with
1581 tracing_enabled=ON. Categories declaration and utilization remain the
1582 same for MSG and SimDag.
1583 - A function was added to the tracing API to declare categories with
1585 - TRACE_category_with_color (char *category, char *color)
1586 where color must be in the following format
1587 "%f %f %f", red, green, blue
1588 and red, green, blue are float values in the interval [0, 1]
1589 - User can specify NULL as color parameter, or continue calling
1590 TRACE_category (cat)
1591 On that case, the tracing system will define random colors
1592 - The following command-line options are supported:
1593 --cfg=tracing/filename:msg.trace
1594 --cfg=tracing:1 (activate tracing, needed to use others)
1595 --cfg=tracing/platform:1 (categorized resource use)
1596 --cfg=tracing/uncategorized:1 (uncategorized resource use)
1597 --cfg=tracing/msg/task:1 (task creation)
1598 --cfg=tracing/msg/process:1 (process creation, migration)
1599 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
1600 --cfg=tracing/smpi:1 (SMPI interface tracing)
1601 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
1602 - examples of examples/msg/tracing updated
1604 - DAXLoader and DOTLoader functions can generate tasks with categories
1605 - A new function to attribute a category to SD tasks:
1606 TRACE_sd_set_task_category (SD_task_t task, char *category)
1607 * Tracing the MPI interface implemented by SMPI
1608 - Collective operations are traced with states
1609 - Point-to-Point operations are traced with states/links
1610 - Tracing activated by a parameter "-trace filename" passed
1611 to smpirun during execution (considering that simgrid
1612 is compiled with tracing enabled)
1613 - To run the simulation with gdb, the simulator
1614 accepts --cfg=tracing/smpi:1 to trace SMPI
1615 - tesh files to check if smpi tracing is ok
1616 - See examples/smpi/NAS/DT-trace
1617 * GTNetS tracing re-worked
1618 - adaptation to the tracing system of GTNets to cope
1619 with modifications regarding the fullduplex mode
1620 - new tesh files to check if gtnets tracing is ok
1623 * Asynchronous communications through the functions:
1624 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
1625 * New function: MSG_load_platform_script()
1626 to make possible using a lua script instead of XML files to set up platforms
1627 * New function: MSG_set_function
1628 to associate functions to processes, used when bypassing the parser
1629 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
1631 Platforms: Add some more examples in examples/platforms
1632 * Grid'5000: see www.grid5000.fr
1633 * *_30000_hosts.xml: various huge files [mainly scalability testing]
1636 * Change the XML format. This is a very important modification. SimGrid
1637 3.5 introduces a new hierarchical format based on the notion of
1638 Autonomous Systems. Compatibility with old format is ensured
1639 through the perl script provided in the install bin directory
1640 bin/simgrid_update_xml.
1641 It is now possible to build platforms with specific routing
1642 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
1643 connect several platforms together. We will try to provide soon
1644 set of realistic platforms exploiting these properties (have a
1645 look at examples/platforms/ for the moment).
1646 * Take the opportunity of the XML format change to be a good XML citizen:
1647 rename link:ctn to link_ctn and similar changes (also dealt with by
1649 * Add a new routing scheme (rule-based) using regular expressions. It
1650 enables to have an extremely low memory footprint when the
1651 underlying routing is simple and can be compactly described. You
1652 need to have libpcre4-dev (perl regular expressions) installed if
1653 you want to use this routing scheme.
1654 * Revive the cluster TAG and allow to easily and efficiently (both in
1655 term of memory and speed) connect clusters together. Have a look
1656 at teshsuite/simdag/platforms/ to see how this can be done. With
1657 this tag, you can create clusters with thousands of tasks at no
1658 cost (have a look at examples/platforms/).
1659 Note: clusters are implemented as ASes, so there is no need for an
1660 enclosing AS tag if you have only one cluster in your platform.
1661 * Add new generic functions in the public interface that allows the user
1662 to call SURF 'create_resource' methods from your code (same
1663 functionality as the XML bypass mechanism but with a much lighter
1665 * Add a new model (enabled through command line --cfg=network/model:SMPI)
1666 that uses a piecewise linear approximation to produce better
1667 results when exchanging small messages.
1668 * Add a new parameter to handle correctly full duplex link and account
1669 for interferences between uplink and downlink communications
1670 (activate with --cfg=fullduplex:1).
1673 * Rename the SD_READY (all dependencies are satisfied and task is
1674 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
1675 dependencies are satisfied) state.
1676 This prevents a confusion between the notion of "ready to schedule"
1677 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
1678 simulated" (SD_RUNNABLE) used by the simulation kernel.
1679 * Change the way a task is considered as ready. Instead of removing
1680 dependencies when a task is done, a counter is decreased. This way,
1681 it is always possible to reach ancestors thanks to the
1682 SD_taks_get_parents function (even after the end of the simulation.)
1683 * Change the return type of SD_Simulate from (SD_task_t*) into
1684 xbt_dynar_t. This function was in handling a dynar internally and
1685 converted it into a NULL terminated array for historical reasons.
1686 * New function SD_dotload(char*) to load a DAG described in dot
1687 format. This loader and the corresponding examples require the
1688 installation of the graphviz library.
1689 * Fix a bug in the management of tasks of size 0 in the surf network
1690 models. This problem was only visible with SIMDAG and you should
1691 thus disregard results produced with earlier versions if you
1692 relied on this feature (some tasks were blocked because of this).
1693 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
1694 even though your applications were doing only point-to-point
1695 communications and sequential computations. Now you can really use any
1696 model you want (of course, if you create real parallel tasks, which are
1697 not implemented in most models beside ptaskL07, this will abort).
1698 * Add an example that schedules a DAX on an heterogeneous platform
1699 using a Min-Min strategy.
1700 * New function SD_workstation_get_current_task() that returns the kind
1701 of task currently running on a workstation in the sequential access
1703 * Raise some warnings when unexecuted tasks remains at the end of the
1704 simulation. This is usually caused by cycles in the DAG.
1707 * New function: SIMIX_process_set_function() called by MSG_set_function
1708 * Change the underlying waiting queue in semaphores so that a process
1709 can wait on several of them simultaneously (as in waitany).
1710 * Fix the way to handle tokens in semaphores so that all access patterns
1711 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
1712 * kill the dirty pimple SIMIX_message_sizes_output()
1713 Please use (proper) visualization instead
1716 * New data container: setset (set of sets of elements)
1717 * New module: mmalloc (mapped malloc, allowing to have several
1718 independent segments of malloc)
1719 * New function: xbt_dict_cursor_set_data()
1720 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
1721 * New function: xbt_dynar_is_empty()
1722 * New function: xbt_fifo_get_last_item()
1723 * Fix xbt_dynar_shrink(): use the right element size.
1724 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
1725 uninitialized areas during expand.
1726 * Fix semaphores: previous implementation was severely broken.
1727 * Use library init/fini functions for our initialization.
1728 - you can use logs and other feature as soon as you want in your
1729 code (even before the xbt_init / MSG_init)
1730 - xbt_exit is now a no-op and produce a warning when used.
1733 * Port GRAS to new SIMIX mechanisms. This allows gras users to
1734 benefit from the latest improvement to the simulation kernel.
1735 * Kill measurement sockets for now. If you rely on them, sorry. This
1736 release is not for you. This feature will be reintroduced in the
1737 future, but we cannot delay the release any further.
1738 * New function: gras_msgtype_get_name().
1739 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
1740 * Fix (at last) the pmm example: it should not randomly fail anymore.
1742 Build chain: bug fixes and overall polishing
1743 * Cmake is now stable enough. Hence, we killed the autotools.
1744 * Port to windows ( TM :)
1745 * Fix the 'make install' target.
1746 No need to use 'make install-simgrid' anymore
1747 * Introduce a 'make dist' target compiling a *source* archive
1748 'make package' compiles a binary archive
1749 * Compile java files only on need
1750 * Add --cd and --setenv command line options to tesh
1751 * Out of source builds are not fully supported yet, but we are close
1752 * Enable supernovae and optimization flags by default for our users
1755 * Add layer to set up environment directly from lua, without XML.
1756 * The effect of gras_stub_generator can be achieved through
1757 lua too (check examples/gras/console/ping_generator.lua)
1759 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1761 SimGrid (3.4.1) stable; urgency=low
1763 The "Polishing easter eggs is probably a good idea" release.
1764 This is a bug fixes release only.
1768 * Fix a bug preventing the tasks from begin garbage collected.
1771 * Fix a bug occuring when a host involved in a communication fails.
1772 This was not detected properly by the other peer involved in the
1773 communication. Now, it's reported as a network error.
1776 * Warn the user about loop dependencies in data flow of DAX files
1777 * Obey the control-flow dependencies of DAX files
1780 * Add option "enable_smpi" allowing to not compile SMPI.
1781 Probably useful for the (Mac) users experiencing a build error here
1782 * Improve the detection of lua5.1 and ruby1.8
1784 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
1786 SimGrid (3.4) stable; urgency=low
1788 The "Easter in Cargese" release. Also known as (major changes):
1790 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
1791 ~> bindings were greatly improved
1792 ~> new tracing infrastructure for better visualization introduced
1794 * the "Welcome to configury modernity" release.
1795 ~> we switched from autotools to cmake, and improved our cdash
1798 A more detailled list of changes follow (full detail in svn log).
1800 Java Bindings: Various Cleanups
1801 * (install java-gcj-compat-dev on debian-like to use them)
1802 * Remove put/get: no need to export deprecated interface in Java
1803 Use send/receive instead.
1804 * Cleanup the examples and add a README per directory
1805 * Remove example autoDestination (that's the only way to go now)
1806 * Remove example explicitDestination (was a plain copy of basic)
1807 * Make JniException a runtime exception, so that there is no need to
1808 declare the fact that you may encounter such a beast. I guess that
1809 nobody will ever want to survive such error.
1810 * Create specific errors for each MSG case of failure:
1811 host failure, transfer failure, timeout, task cancelled
1812 * Cleanup the exceptions that may get thrown by each function
1813 * Other internal cleanups in Java bindings. Performance still bad :/
1814 Ruby and Lua Bindings: create them
1815 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
1816 * That's new and great, you should try them out.
1817 Same functionalities than Java bindings, only even less polished
1819 * Kill the useless "rate" argument of SD_task_get_execution_time()
1820 Everyone used to provide -1 as a value, it was not used, and the
1821 semantic of a possible use wasn't even clear.
1822 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
1823 either as comm costs or compute costs to mean that there is no
1824 such thing for that specific task.
1825 * Add a SD_task_set_name() function
1826 * Fix SD_task_unschedule() on typed tasks
1827 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
1828 * In DAX loader, accept useless 'level' attributes to <job> since
1829 LIGO DAGs have them (seem to be to ease graphical representation).
1831 * Add an example masterslave_mailbox.c using send/receive and not
1832 the deprecated put/get interface.
1833 * Kill the MSG_paje_output() function. It's a noop since 2 years.
1834 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
1836 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
1837 (declare MSG_USE_DEPRECATED to still have the old name)
1838 * Add a MSG_task_set_data() function
1839 * About trace replay (see examples/msg/actions):
1841 - Allow to work with splitted trace files for each process
1842 Give the specific trace file as argument of each process,
1843 and call MSG_action_trace_run(NULL)
1844 You can still have one merged file for all processes.
1845 - Fix implementation of collective operations
1846 * Allow task_execute() on 0-sized tasks (closes #10063)
1848 * This is the first release of SimGrid where SMPI is not considered
1849 beta anymore (even if some corners should still be improved)
1850 * Port over the new SIMIX_network submodule (internal refactoring)
1851 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
1852 * Implement more missing elements of the standard:
1854 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
1856 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
1857 MPI_Scan() MPI_Get_processor_name()
1858 - Added implementation of missing case for Alltoall (warning: it's
1859 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
1860 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
1861 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
1862 SMPI_MPI_Allgatherv()
1863 * Bug fixes include:
1864 - MPI_Waitsome() was broken
1865 - Allow relative includes in smpicc
1866 - Command line cfg argument 'reference_speed' was ignored...
1867 - Some functions did not properly lead to auto-benching of user code
1868 - smpicc passes -O2 by default (just like openmpi one)
1870 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
1871 * Bug fixes about timeouts during communications
1872 * add SIMIX_message_sizes_output() as a pimple to write to file the
1873 amount of messages per size. Use gnuplot to get histogram.
1874 Pimple because that's the only user-visible function of simix,
1875 defined directly in xbt.h (irk, sorry)
1877 - Add a SIMIX_sem_get_capacity() function
1878 - Fix interactions with processe resume/suspende
1879 - release_forever() was stupidly broken
1880 - Fix SIMIX_display_process_status() for processes in a semaphore
1881 - Make SIMIX_sem_block_onto() user-visible
1882 * Refactoring context stuff:
1883 - Use pseudo-OOP for better modularity
1884 - reimplement SIMIX_process_kill() without process_schedule() so
1885 that the latter can take as invariant that it is called from
1887 - Merge context_start into context_new for sake of simplicity
1889 * Add a Vivaldi network model, coded live during SUD'10 ;)
1890 * Rename configuration variables to start a hierarchy:
1891 o cpu_model -> cpu/model
1892 o network_model -> network/model
1893 o workstation_model -> workstation/model
1894 * New configuration variables:
1895 o network/bandwidth_factor: correction to bandwith
1896 o network/latency_factor: correction to latency
1897 o netwotk/weight_S: correction to the weight of competing streams
1898 * Add a long description to the models, that users can see with such
1899 argument on the command line: --cfg=cpu/model:help
1900 * --help-models display the long description of all known models
1902 * config: add the ability to set a default value after registration
1903 Does not override any previously set value (e.g. from cmd line)
1904 * dict: allow to have integer key and data.
1905 When so, you need to use the following functions
1906 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
1907 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
1908 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
1909 In contrary to regular dicts, the key is not malloced before copy.
1910 Mixing scalar and regular elements in the same dict is not tested
1912 * Allow to use xbt_dynar_shrink() to expend the dynar instead
1913 Tracing for Visualization:
1914 * SimGrid is now instrumented in order to generate a trace file for
1915 visualization analysis: to use it, need to compile SimGrid with the
1916 "tracing" option enabled, and instrument the program using SimGrid with
1917 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
1918 (among other functions).
1919 * The instrumentation only traces the platform utilization for now
1920 * Documentation to use the tracing functions and how to analyze the
1921 traces with the Triva tool is written.
1922 * More information about: SimGrid FAQ (in the section Tracing Simulations
1925 * We moved to cmake as default build system. Autotools support will
1926 be dropped soon. Check the FAQ for more info about how to use it.
1927 * Greatly improved our cdash/ctest interactions
1928 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
1929 * Added memory checking tests with valgrind; lot of memleak fixing.
1930 This may be the first release of simgrid with so few memory issues
1931 * Added code coverage tests.
1932 Our coverage is still improvable, but at least we see it on cdash.
1934 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
1936 SimGrid (3.3.4) stable; urgency=low
1938 The "Desktop Grid needs love too" release (also called Xmas release).
1940 Models improvements:
1941 * Major speedup in the maxmin system solving by using lazy evaluation
1942 Instead of solving completely the maxmin system at each iteration,
1943 only invalidate (and recompute) the modified parts.
1944 This new feature is enabled in default models but you can try to
1945 turn it on with "--cfg:maxmin-selective-update=1" for other models.
1946 * Cas01 IMproved as default CPU model
1947 This CPU model is the same Cas01 model, but it uses the
1948 maxmin-selective-update flag and a heap structure to manage
1949 actions on SURF kernel.
1950 It reduces the complexity to find the next action to finish and,
1951 consequently, it's faster than the old Cas01.
1952 This is the new default CPU model (Cas01).
1953 * Rename the old Cas01 model to Cas01_fullupdate
1954 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
1955 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
1956 * CpuTI (CPU Trace Integration)
1957 A new CPU model whose objective is simulate faster when using
1958 availability trace files.
1959 Instead of using a full featured, over engineered maxmin system for
1960 CPU modeling, this model does the pre-integration of traces files
1961 to calculate the amount of CPU power available, and so, executes
1962 faster than the old CPU models.
1963 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
1964 * Use LV08 as default network model since it gives better accuracy
1965 for small messages and shouldn't change things for big ones.
1966 Use --cfg=network_model:CM02 to get the previous behavior.
1969 ******************************************
1970 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
1971 ******************************************
1972 * The new CPU model may changes simulations!
1973 The point is that events occurring at the exact same timestamp
1974 are not scheduled in the same order with the old and new
1975 version. This may be enough to completely change the execution
1976 of simulations in some cases.
1977 * The new network model will change simulations!
1978 This new model is more realistic than the previous one, so you
1979 should consider redoing your old experiments with this model.
1980 Sorry for the inconvenience.
1983 * Introduce the supernovae compilation mode
1984 When compiled that way, the whole SimGrid (or almost) is put in a
1985 single compilation unit and compiled in one shoot.
1986 This is to help gcc which has difficulties to inline stuff from one
1988 The speedup seem to be above 15%, althrough more tests are needed on
1989 amd64 to confirm that gain.
1992 * Port of MSG's mailbox on top of SIMIX network
1993 The put/get mechanism was greatly simplified on the way.
1996 * New SIMIX network module. Provides:
1997 - Mailbox: rendez-vous mechanism to find with who you want to speak
1998 - Synchronous send/recv: easier and hopefully faster since the
1999 logic is handled in the maestro process directly now
2000 - Asynchronous send/recv: you dreamt of it? It's here now
2001 Too bad that nobody cared enough to propagate the change to MSG.
2002 * Add semaphores as SIMIX synchronization mechanism.
2005 * new function SD_daxload(char*) to load a DAX file
2006 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
2007 * Introduce typed tasks. Specify its kind and cost at creation.
2008 At scheduling, just give where it should be placed, and the cost
2009 for each involved resource is automatically computed.
2010 Existing constructors so far (more to come of course):
2011 - SD_task_create_comm_e2e() for end-to-end communication
2012 - SD_task_create_comp_seq() for sequential computation
2013 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
2014 * new function SD_task_dump() for debuging display
2015 * new function SD_task_dotty(task,FILE*) writing to file the info
2016 about the task in dotty format
2017 * SD_task_dependency_exists() can now cope with having one of its
2018 arguments NULL. If so, it tests whether the other argument has any
2020 * Add getters on list of preceding/following tasks:
2021 SD_task_get_parents(task) and SD_task_get_children(task)
2022 * Add getters on amount of workstations and list:
2023 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
2024 * Add getter on task kind: SD_task_get_kind(task)
2025 * Update the start_time and finish_time of tasks on completion/failure
2026 * Bugfix: Remove task from state swags when destroyed
2029 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
2032 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
2033 dynar with one separate thread per value of the dynar.
2034 * Change the prototype of xbt_thread_create(), sorry.
2035 Added a boolean parameter indicating whether we want to join this
2036 thread (used in SG only for now)
2037 * Implement xbt_thread_join and xbt_thread_yield in SG also.
2040 * GTNetS wrappers should now be usable again (and betterly tested too)
2041 * Fix a major regression from 3.2 where the timeout provided to
2042 MSG_task_put_with_timeout() was used as absolute time before which
2043 the comm should be done.
2044 * Start to fix the <cluster> tag.
2045 - Internal links should be good now (beside of the loopback, which
2046 use the private link instead)
2047 - paths to the external world is still rather broken
2048 - the <route:multi> tag is just broken. Actually that's brain-dead.
2049 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
2050 to make it less stupid
2051 ** Check your platform with teshsuite/simdag/platforms/flatifier **
2052 * Fix a source-level compatibility glitch from 3.2: after defining
2053 MSG_USE_DEPRECATED, you can use the old name
2054 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
2055 * Allow to compile from the SVN with automake 1.11
2056 * Fix some problems when using the "start_time" tag in deployment XMLs.
2057 * Fix #8569: XBT/synchro.h has redundant declarations
2058 * Fix #8563: MSG return values and exceptions
2059 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
2060 * Integrate patch #8636: Obey DESTDIR when installing documentation.
2061 Thanks to Robson Peixoto.
2062 * Fix a vicious bug in dictionaries inducing that some elements were
2063 not freed on xbt_dict_free()
2065 Portability report of this version:
2066 * Main portability targets:
2067 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
2068 on (amd64/i386/ia64)
2069 - mac leopard on i386
2070 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
2071 but nothing critical.
2072 * Other platforms: windows, AIX and others were not tested for this release
2074 Timing report of this version:
2075 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
2076 scenario parameters). From 8h to a few seconds in desktop grid settings.
2077 * Supernovae brings about 25% speedup on i386.
2079 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
2081 SimGrid (3.3.3) stable; urgency=low
2083 The "Need for Speed" release.
2085 The timings done to validate the 3.3.2 were faulty.
2086 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
2088 The problem was a conversion from a manually handled vector to
2089 xbt_dynar_t on the critical path.
2090 xbt_dynar_foreach calls functions, inducing stack management crap.
2092 We inlined these functions and xbt_dynar_foreach is now breath taking.
2093 We also inlined xbt_swag_belong on the way.
2095 Here are some approximate speedup measurements (on master/slaves
2096 simulations lasting between 10s and 20s each):
2097 3.3.1 -> 3.3.2: about same performance
2098 3.3.2 -> 3.3.3: 40% speedup
2099 3.3.1 -> 3.3.3: 40% speedup
2100 3.3.1 with inline patch -> 3.3.3: 30% speedup
2102 Our reading is that the refactoring which occurred in 3.3.2 made us
2103 suffer much more from the xbt_dynar_foreach low performance, but
2104 once we solved this, this refactoring proved to be very performance
2105 effective. From the 40% speedup, somehow, 10% are due to the
2106 inlining and 30% to the refactoring.
2108 That's a pitty that gcc cannot inline functions placed in other files
2109 alone. We have to choose between:
2110 - break the encapsulation (by putting private data structures and
2111 accessors in headers files to help gcc)
2112 - live with low performance
2113 - switch to a decent compiler such as icc (not quite possible).
2115 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
2117 SimGrid (3.3.2) stable; urgency=low
2119 The "Simplicity does not preceed complexity, but follows it" release.
2121 The main contributors of this release were (lexical order):
2122 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
2125 * Extract the routing logic into its own object.
2126 (was dupplicated in network.c and workstation_LV07.c;
2127 Allows to implement other ways of storing that info)
2128 => kill now useless network_card concept
2129 - Use dynar to represent routes (instead of void** + int*)
2130 - kill link_set (use surf_network_model->resource_set instead)
2131 - Add a command-line option to choose the routing schema to use
2132 - Add three new models:
2133 * Floyd (shortest path computed at initialization)
2134 * Dijikstra (shortest path recomputed all the time)
2135 * Cached Dijikstra (shortest path computed on need)
2136 All these models where contributed by Silas De Munck, and are
2137 described in his ICCS09 paper.
2139 * Simplify model declaration
2140 (less redirections, less function to write when defining a model)
2141 - Factorize stuff between models:
2144 surf_model_resource_set(model)
2145 surf_model_resource_by_name(model, name)
2146 - Unify the types of models in s_surf_model_t (using an union)
2147 - Embeed fields of common_public directly into s_surf_model_t
2148 - Rename model methods:
2149 action_free ~> action_unref
2150 action_change_state ~> action_state_set
2151 action_get_state ~> action_state_get
2152 - Change model methods into functions :
2153 (model)->common_public->action_use ~> surf_action_ref
2155 * Implement a generic resource; use it as ancestor to specific ones
2156 (allows to kill duplicated code in models)
2157 Drawback: timer command don't need no name nor properties;
2158 workstation_CLM03 don't need no properties
2159 (but I guess we can live with those few bytes wasted)
2161 * Improve the action object model
2162 - implement a constructor avoiding dupplicated code about field
2163 initialization in generic_action part.
2165 * Kill the SDP model: it has an external dependency, is deprecated
2166 in flavor of modern lmm models, and didn't compile since a while
2169 * Relocation of the context module from XBT to SIMIX.
2170 (the context were decoupled from the simix processes, duplicating a lot of code)
2171 => a lot of code was factorized
2172 - less overhead is introduced during scheduling
2173 - simpler API for the context factory
2174 - the logic for process creation,destruction and manipulation was simplified
2175 * Simplification of the s_smx_process_t data structure.
2176 => accesing the simix level data associated to a process is faster now,
2177 and the code is a lot more readable.
2180 * Implement some more MPI primitives:
2181 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
2182 -implementation: Bcast: flat or 2-ary tree (default),
2183 Barrier: 4-ary tree,
2185 Allreduce: Reduce then Bcast
2186 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
2187 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
2188 Alltoallv: flat tree, like ompi
2190 * Add support for optimized collectives (Bcast is now binomial by default)
2191 * Port smpirun and smpicc to OS X
2194 * Kill SD_link_get_properties: hard to maintain and makes very little sense
2195 Shout out if you used it.
2198 * Display the list of still queued messages in SG mode when existing
2202 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
2203 * Add xbt_graph_node_get_outedges() [Silas De Munck]
2204 * Add xbt_str_from_file(FILE*)
2205 * Add xbt_dict_get_key achieving a linear reverse search
2206 * Remove the context module
2208 Portability report of this version:
2209 * Main portability targets:
2210 - Linux(debian)/x86/context
2211 - Linux(debian)/x86/pthreads
2212 - Linux(debian)/amd64/context
2213 - Linux(debian)/amd64/pthreads
2214 On these, we still have the eratic breakages of gras/pmm and
2215 amok/saturate_sg reported in previous version. We still think
2216 that the tests are the cause of the fault, not the tested code.
2218 - Mac OSX Leopard/x86/context
2219 Still false negative in tesh autotesting.
2220 Smpi still fails, but this time because readlink does not accept -f
2221 Everything seems to work properly beside of that.
2224 - AIX version 5.3 (only tested contexts this time)
2225 Smpi still fails there because mktemp is not installed.
2226 Everything seems to work properly beside of that.
2228 I managed to compile it for the first time, but several breakages.
2229 Won't delay the release for this exotic platform.
2231 * Windows: it's still lagging behind. If you want to help, please
2234 Timing report of this version:
2235 This version seem to be more than 5% faster than 3.3.1 (on linux
2236 64bits with contextes). The gain is less than expected, we are
2237 investigating this for next release.
2239 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
2241 SimGrid (3.3.1) stable; urgency=low
2244 * Implement a --cfg-help to show existing configuration variables
2245 * Build chain do not require doxygen in maintainer mode
2248 * fix a bug on struct sizeof computation, which prevented the
2249 exchange of arrays of structs in some conditions
2250 - added a regression test about this in datadesc_usage
2251 * Allow the exchange of 0-long dynamic vectors.
2252 - for that, use -1 as indicator of dynamic size instead of 0
2253 - This implied to change any size from unsigned long to long,
2254 reducing a bit communication abilities, but I guess that with
2255 64bits being quite common, this is more than enough.
2256 - This also induce a protocol change, thus bumping network protocol
2257 version from 0 to 1 (if we have external users, we have to get
2258 clean on that point too ;)
2259 - added two regression tests about this in datadesc_usage
2260 * Be more verbose when propagating local exceptions
2261 This helps debugging.
2262 * Display the status of simulated processes when receiving SIGINT in
2266 * Allow to control the simulation from a trace file.
2267 New functions MSG_action_register() and MSG_action_trace_run()
2268 The first one allows to associate a function execution to each
2269 kind of action while the second one parses a trace file and
2270 triggers the corresponding actions within the system.
2271 For now, only a toy example is provided in examples/msg/actions
2272 * Add an exemple of process migration in examples/msg/migration
2273 * Fix a bug in task exchange which broke MSG_task_get_sender()
2274 Add a teshsuite regression test for that.
2275 [Bug: if MSG_task_get_sender() is called after sender exit,
2277 * Fix a bug which prevented suspend/resume to work properly
2278 * Display the status of simulated processes when receiving SIGINT
2279 This fixes a regression of v3.3. due to the introduction of SIMIX
2280 * Bug fixing in failure management:
2281 - trace could not start by a failure at time 0
2282 - failure during communications were not working
2285 * Add SIMIX_process_set_name() to change the name of the current
2286 process in the log messages.
2287 * Store smx_hosts in a dict since we only retrieve them by name
2288 * Move the configuration infrastructure to surf
2291 * Move the configuration infrastructure to surf
2294 * Massive internal cleanups:
2295 - Store internal structures on processes instead of hosts (allows
2296 to have more than one process per host, in addition of being more
2298 - Cleanup the initialization/finalization process
2299 - Kill a whole bunch of unneeded synchronization:
2300 processes run in exclusive manner within the simulator
2301 - Move queues from global tables to process data fields
2303 - now accept -platform and -hostfile arguments
2304 - Pass the right rank value to processes according to the hostfile
2305 * Compile the examples by default, and use them as regression tests
2306 * Implement MPI_Wtime()
2307 * Change the reference speed to a command line option
2310 * TCP_gamma can now be specified as command line option using
2311 --cfg=TCP_gamma:10000000.0
2312 * Change the --surf-path cmd line option into --cfg=path:
2315 * Also include strbuff from xbt.h public header
2316 * xbt_ex_display(): do not free the exception after displaying
2317 This allows to do more with the given exception afterward.
2318 Users should call xbt_ex_free() themselves.
2322 Portability report of this version:
2323 * Main portability targets:
2324 - Linux(debian)/x86/context
2325 - Linux(debian)/x86/pthreads
2326 - Linux(debian)/amd64/context
2327 - Linux(debian)/amd64/pthreads
2328 These targets fail about 1/10 of times on gras/pmm, but we believe
2329 that this is because of the test, not because of simgrid.
2330 amok/saturate_sg fails even more rarely, and the test may not be
2333 - Mac OSX Leopard/x86/context
2334 The test suite still spits tons of errors because some obscure
2335 force prevents us from removing the temporary directories
2336 arguing that they still contain some metadata I've never heard of.
2337 Smpi fails because seq is not installed.
2338 Everything seems to work properly beside of that.
2341 - AIX version 5.3 (both contexts and pthread)
2342 Smpi still fails there because mktemp is not installed.
2343 XML inclusions seems rosty on AIX.
2345 * Windows: it's still lagging behind. If you want to help, please
2348 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
2350 SimGrid (3.3) stable; urgency=high
2354 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
2355 [Malek Cherier & Mt]
2357 * Introduce the SIMIX module: factorize code between MSG and GRAS.
2360 Until now, GRAS were using MSG as an interface to SURF. It was
2361 quite difficult because both interface have several differences
2362 (MSG channels vs GRAS sockets were the most notable point).
2364 This also opens the gate to SMPI (which should occur soon) and speed
2365 up simulations by to 40% (even if it were not the main goal).
2367 **************************************
2368 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
2369 **************************************
2370 The point is that events occuring at the exact same timestamp are
2371 not scheduled in the same order with the old and new version. This
2372 may be enough to completely change the execution of simulations in
2373 some cases. Sorry for the inconvenience.
2375 * Cleanup and upgrade the XML format to push further scalability
2376 issues (check http://hal.inria.fr/inria-00256883/ for more info)
2378 * Improve the testing infrastructure with tesh. Now a very large part of
2379 the code is tested not only by being run but also by checking that the
2380 output match an expected output [Mt].
2382 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
2383 is really less memory-demanding, which should allow you to use
2384 larger files in SimGrid [AL].
2386 * Inform valgrind about our contextes, so that it becomes usable
2387 with the default (and more effecient) version of SimGrid
2388 [contributed by Sékou Diakite, many thanks]
2391 * Introduce a listener thread in charge of receiving incoming
2392 messages from the network. It allows to overlap communication and
2393 computation but most notably, it removes some stupid deadlocks due
2394 to the fact that so far, a process could not send and receive at
2395 the same time. This made most non trivial communication schema
2397 * Convert the PIDs from long int to int to match the MSG ones (and
2398 linux ones too) [Mt]
2399 * New function: gras_agent_spawn() to launch a new process on
2400 current host. Only working in simulation for now. [Mt]
2401 * New function: gras_os_hostport() returning a constant form (ie,
2402 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
2405 * Make the backtrace of exceptions more human readable [Mt]
2406 * New module: xbt/str [Mt]
2407 a ton of string utility functions (split, join, printf to a newly
2408 allocated buffer, trim, etc)
2409 * New module: xbt/hash [Mt]
2410 SHA1 hashing algorithm (more to come if needed)
2411 * New module: xbt/synchro [Mt]
2412 synchronization tools (mutex and conditions) working the same way
2413 in simulation and in real life (mainly useful for GRAS, but not
2415 * New module: xbt/queue [Mt]
2416 classical producer/consumer synchronization scheme
2417 * xbt_dynar_new_sync() creates a synchronized dynar. All access
2418 (using the classical functions will get serialized) [Mt]
2419 * Make dictionary internal table dynamic. No need to specify its size
2420 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
2422 * Make sure the log channels are organized as a tree under windows
2423 (because of ANSI C compatibility issue, any channel were child of
2424 root directly) [Mt].
2427 * Cleaned many thing in surf and fixed a few bugs [AL].
2428 * Add a nice command line configuration mechanism to compose models [AL].
2429 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
2430 the previous one (KCCFLN05). It relies on something that looks like
2431 a max-min sharing mechanism but cannot be written as such. A new solver
2432 was thus designed [AL].
2433 * Add a new solver to lmm. Based on Lagrange optimization and
2434 gradient-based descent, it enables to efficiently maximise systems s.a
2436 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
2438 This solver enables to propose two new network models for TCP Reno and
2439 TCP Vegas based on Low's work. These models still need to be fully
2440 tested though [Pedro Velho].
2443 * Bug fix in SD_simulate. Now the time bound given as argument is
2445 * Use the new parallel task model (ptask_L07) as default.
2446 * Use the SURF command line configuration mechanism.
2447 * 0-size tasks (for synchronization) should now work.
2449 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
2451 SimGrid (3.2) stable; urgency=high
2455 We still experience issues on this platform, but we believe that at
2456 least MSG is usable.
2458 GRAS API BREAKAGE (for simplification purpose, sorry):
2459 * the gras_msgtype_by_name is not used anymore. Instead of
2460 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
2461 you can write (and must)
2462 gras_msg_send(toserver, "request", &request);
2463 - If you still want to pass a gras_msgtype_t to the function (to cache
2464 the type and avoid the lookup time), use the gras_msg_send_() variant.
2465 - Impacted functions:
2466 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
2467 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
2468 * The callbacks are now expected to return 0 when everything went well
2469 (just like the main() function)
2471 GRAS new features and improvements:
2472 * New module mechanism where user code can use per process globals [Mt]
2473 This is similar to gras_userdata_*() functions, but for libraries. It
2474 factorize some code developped over and over in the examples and AMOK.
2475 It has still to be documented and used (only amok/peermanagement is
2477 * Fix a vicious bug in the TCP buffering mechanism which leaded to message
2478 loss when they were small enough to fit into the buffer and sent quickly
2479 enough so that they can all get received in one shoot.
2480 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
2481 if not found. Use the *_or_null() variant for the old semantic.
2482 * In gras_msg_handle, do not discard messages without callback.
2483 They are probably messages to be explicitly awaited later (ie, proofs of
2484 mis-synchronization in userland since they are sent before being awaited)
2485 No big deal usually.
2486 * gras_socket_meas_send/recv: semantic changed!
2487 The numerical arguments used to be (1) the total amount of data to send
2488 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
2489 messages. This was need for the fool willing to send more than MAXINT
2490 bytes on quite fat pipes.
2493 * Do really rename the hostmanagement module to peermanagement. [Mt]
2494 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
2495 but this is rather new and this was documented in the module
2496 documentation (poor excuses, I admit)
2497 * Bandwidth measurement semantic changed! This follows the changes to
2498 gras_socket_meas_send/recv explained above.
2501 * A sequential mode has been added to the workstations. When a workstation
2502 is in sequential mode, it can execute only one task, and the other tasks
2503 are waiting in a FIFO. [Christophe Thiery]
2506 * The KCCFLN05 workstation model now handles parallel tasks. It is the
2507 model for SIMDAG. [Christophe Thiery]
2508 * Bug fix in the maxmin solver: Some values were close to 0 instead of
2509 equal to 0, which caused some bad behaviors in
2510 saturated_constraint_set_update. I now use a threshold mechanism like in
2514 * When running manually src/testall, you select specific units [Mt]
2515 testall is the result of our cunit mechanism, and should replace all
2516 the scripty thingy around since bash don't run easily on billware.
2518 * A mallocator system has been added. [Christophe Thiery]
2519 Mallocators allow you to recycle your unused objects instead of freeing them
2520 and allocating new ones.
2522 Documentation update:
2523 * FAQ reworking + New FAQs:
2524 - "Valgrind spits tons of errors!" [Mt]
2525 - "How to repport bugs" [Mt]
2526 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
2527 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
2528 - Communication time measurement within MSG [AL]
2529 - I experience weird communication times when I change the latency [AL]
2530 * GRAS tutorial [Mt]
2532 - an introduction to the framework and to the used communication model
2533 - an initiatic tour introducing the most proheminent features:
2535 . Lesson 0: Installing GRAS
2536 . Lesson 1: Setting up your own project
2537 o Part 2: Message passing
2538 . Lesson 2: Exchanging simple messages
2539 . Lesson 3: Passing arguments to the processes (in SG)
2540 . Lesson 4: Attaching callbacks to messages
2541 . Lesson 5: Using globals in processes
2542 . Lesson 6: Logging information properly
2543 . Lesson 7: Using internal timers
2544 . Lesson 8: Handling errors through exceptions
2545 . Lesson 9: Exchanging simple data
2546 . Lesson 10: Remote Procedure Calling (RPC)
2547 . Lesson 11: Explicitely waiting for messages
2548 . Recapping of message passing features in GRAS
2549 - A HOWTO section containing:
2550 o HOWTO design a GRAS application
2551 More are due, of course. They will come latter. In the meanwhile, you can
2552 check the examples which are still here.
2554 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
2556 SimGrid (3.1) stable; urgency=high
2560 There was a stack corruption somewhere, visible only when optimizing
2561 with these versions. [Vince]
2564 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
2565 module that enabled to play with Directed Acyclic Graphs. It is built
2566 directly on top of SURF and provides an API rather close to the old
2567 SG. Some old codes using SG are currently under rewrite to check that
2568 all needful functions are provided. [Christophe Thiery]
2571 * Complete rewrite of the KCCFLN05 workstation model. It is now an
2572 extension of the classical CLM03 model that gracefully handles
2573 failures. This is now the default model for MSG and GRAS. It doesn't
2574 handle parallel tasks yet though. [AL]
2575 * Bug fix: Weights were not correctly set in the network part.
2576 WARNING: This may have resulted in incorrect results with simulations
2577 where there are more than one flow on a given link. [AL]
2580 * After a (long ?) discussion on simgrid-devel, we have decided that the
2581 convention we had on units was stupid. That is why it has been decided
2582 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
2583 WARNING : This means that all previous platform files will not work as
2584 such with this version! A warning is issued to ask users to update
2586 A conversion script can be found in the contrib module of the CVS, under
2587 the name contrib/platform_generation/surfxml_update.pl [MQ]
2590 * Bug fix: Processes were started in reverse order, wrt deployment file.
2591 WARNING: if your code relies on this bug, please fix it. [AL]
2592 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
2593 being executed on two different locations. [AL]
2594 * Bug fix: Failures are now better supported thanks to Derrick's tests
2595 (there was many failure situations I hadn't thought of and that weren't
2596 correctly handled). [AL]
2597 * New function: MSG_host_is_avail indicates you whether a given m_host_t
2601 * New! a real RPC mechanism, as it ought to be since too long. [MQ]
2602 Exception occurring on server-side are propagated back to client (!).
2604 API CHANGE: the callback changed their prototype. Change:
2605 int my_handler(gras_socket_t expeditor, void *payload_data) {
2607 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
2608 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
2610 * New! function: gras_msg_handleall to deal with all messages arriving
2611 within a given period.
2612 * New! function: gras_socket_server_range to get a server socket in a
2613 range of port numbers (ease to avoid port number conflicts) [MQ]
2614 * New! gras processes display their backtrace when they get a SIGUSR1
2615 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
2616 Sweet to debug RL processes [MQ]
2620 - Do not force experiment sizes to be expressed in kb, or it becomes
2621 impossible to measure the latency this way (needs one byte-long tests)
2622 WARNING: this changes the amok_bw_* function semantic. [MQ]
2623 - Implements the link saturation stuff. [MQ]
2624 * Peer management module:
2625 New! module factorizing code that we wrote over and over [MQ].
2628 * New module: cunit (my jUnit implementation in ansi C) [MQ]
2629 - Test units are placed directly into the library code, they get extracted
2630 automatically and placed into the src/testall binary.
2631 - Convert most of the XBT tests to this system.
2632 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
2633 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
2634 live in the same C code. This required to change a little bit the API
2635 of surfxml parsing but shouldn't be an issue for end-users. [AL]
2636 * New module: sparse graph structure with basic algorithms (this is work
2637 in progress and the API is not considered to be frozen yet). [AL]
2638 * Display more information on backtraces: source line & function names are
2639 now displayed just like valgrind does (rely on addr2line tool) [MQ]
2640 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
2641 * Reworked a little bit some #include statements to load only required
2642 headers. Some user code that relied on SimGrid to include stdlib or
2643 stdio may need to include it by themselves. [AL]
2644 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
2646 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
2647 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
2648 but I guess that almost nobody used those parts. [MQ]
2650 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
2652 SimGrid (3.0.1) stable; urgency=low
2655 * Unfortunately, I had missed 5 misnamed functions:
2656 xbt_fifo_item_t xbt_fifo_newitem(void);
2657 void xbt_fifo_freeitem(xbt_fifo_item_t);
2658 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
2659 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
2660 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
2661 They're now deprecated. Please use their new versions:
2662 xbt_fifo_item_t xbt_fifo_new_item(void);
2663 void xbt_fifo_free_item(xbt_fifo_item_t);
2664 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
2665 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
2666 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
2668 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
2669 * Documentation: xbt_log module unmercifully reworked [MQ]
2670 * Bugfix: there was a problem with the ending of contexts with
2671 the pthread backend. It caused some weird deadlock or behavior
2672 depending on the pthread implementation. [AL]
2673 * Bugfix: get the exceptions raised in the simulator repport where
2674 and why they come from when they are not catched in time [AL, MQ]
2677 * Bugfix: Do repport the error when two non-connected hosts try to
2678 exchange data (Thanks to Flavien for stumbling into this one) [AL]
2681 * Add additionnal checkings on communications. Assert that two
2682 communicating hosts are connected by a set of links... [AL]
2685 * Add additionnal checkings on channel values in communication [AL]
2686 * New: MSG_task_get_source to see on which host a task was generated [HC]
2687 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
2688 the number of tasks waiting to be received on channel and sent
2690 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
2691 waits for the first task coming from a given host.. [AL]
2693 GRAS new functionnalities: [MQ]
2694 * Enhance the parsing macro to allow the size of multidimentional objects
2695 to be given thru annotations.
2696 * New example (and documentation): Matrix Multiplication a la RPC
2697 (as when I was young!) and fix a bunch of bugs found on the way.
2699 GRAS performance improvements: [MQ]
2701 * Reduce the amount of cbps creation/destruction by making it static to
2702 datadesc_send/recv() and using a (newly created) cbps_reset (based on
2705 * Change libdata to a set so that we can search for stuff by ID (and thus
2706 reduce the insane amount of dict lookups)
2709 * Actually implement gras_datadesc_copy() so that we don't have to mimick
2710 RL communication on top of SG since it's so uneffective.
2711 It may also be used for inter-thread communication in RL, one day.
2712 * Use gras_datadesc_copy() to exchange messages on top of SG
2714 - improve message exchange performance on top of SG
2715 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
2716 * Don't exchange on the network the size of the used part of buffer,
2717 instead, specify the possible buffer size to read().
2719 - reduces the amount of read/write calls (one pair per exchange)
2720 - reduces the amount of exchanged data (the size)
2721 - allows to retrieve all arrived data on receiver side, if we don't need
2722 it right now (subsequent read will peek the buffer)
2723 - allows the receiver to proceed with the begining of the stream before
2724 everything is arrived
2725 - make it possible to build an iov transport (using readv/writev)
2727 - take care of the data with non-stable storage (like stacked data),
2729 * If possible, TCP send uses vector I/O (when writev() is here)
2730 - Don't use it for receive since we send data sizes and data on the
2731 same stream, so we wouldn't be able to chain large amount of chunks
2732 before having to flush the stuff to read the size.
2733 * Rework the transport plugin mechanism to simplify it and reduce the
2734 amount of pointer dereferencement when searching for the right function
2737 * I guess that now, we do almost as few system calls as possible while
2738 doing as few data copy as possible.
2740 To improve it further, we could try to send all the sizes first and then
2741 all the data (to use iov on receiving size), but it's only a partial
2742 solution: when you have 2 dimensional data, the sizes of the second
2743 dimension is data of the first dimension, so you need 3 streams.
2745 I'm not sure the potential performance gains justify the coding burden.
2747 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
2749 SimGrid (3.00) stable; urgency=high
2752 * New! Give the possibility to hijack the surf parser and thus bypass
2753 MSG_create_environment and MSG_launch_application. Have a look at
2754 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
2756 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
2758 SimGrid (2.96) unstable; urgency=low
2763 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
2764 This deprecates the xbt_error_t mechanisms.
2765 It modifies (simplifies) all XBT and GRAS API.
2766 MSG API keeps unchanged (exceptions raised by XBT are catched from
2767 within MSG and masked with existing error handling facilities)
2770 * New! Add a FATPIPE model. [AL]
2771 * New! Add a parallel task model. [AL]
2772 * New! Add automatically a loopback interface (in the default
2773 network model) if none was precised.
2776 * Bugfix: MSG_process_resume now works with the current running process.
2778 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
2779 * Modification of MSG_task_get_compute_duration. Once a task has been
2780 processed, the value returned by this function is now equal to 0. [AL]
2781 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
2782 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
2783 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
2784 of a m_task. For now, MSG_task_cancel only works with computation
2786 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
2787 of the processor (in Mflop/s) regardless of the current load on the
2789 * API Change: use proper naming convention for MSG_getClock and
2790 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
2792 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
2793 This function changes the priority of a computation task. This priority
2794 doesn't affect the transfer rate. A priority of 2 will make a task
2795 receive two times more cpu power than the other ones. This function
2796 has been added to suit the needs of Nguyen The Loc and hasn't been that
2797 much tested yet. So if it fails, please report it and send me your code.
2799 * API Change: removed all functions and types that were marked "deprecated"
2800 since many months. Renamed MSG_global_init_args to MSG_global_init.
2802 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
2804 SimGrid (2.95) unstable; urgency=low
2807 * Steal some nice code to GNU pth to fix context detection and usage [AL]
2808 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
2809 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
2812 * Bugfix: Allow absolute paths for platform description files [MQ]
2813 * Bugfix: do free the variables after use. Leads to drastic performance
2815 * Implement max_duration (ie, timeouts) on resources [AL]
2818 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
2820 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
2821 the needed support (timeouts) [AL]
2824 * Implement measurement sockets. You can now get the bandwidth between two
2825 hosts thanks to AMOK (see below). [MQ]
2826 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
2827 dynar over the network (yeah) [MQ]
2828 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
2829 * simple/static token-ring example. [Alexandre Colucci and MQ]
2830 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
2831 in place before [MQ]
2834 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
2835 type parsing. "short" and "long" modifiers were also ignored; other
2836 modifier (such as reference level) are still ignored. [MQ]
2837 * Embeed the buffer size within the buffer itself on SG. [MQ]
2838 That way, send() are atomic and cannot get intermixed anymore (at least
2839 the ones which are less than 100k; bigger messages still have the issue)
2840 * Array size pushed by the field, not by the field type (or each
2841 and every long int will push stuff to the cbps) [MQ]
2842 * use select() to sleep since it allows to portably sleep less than one
2845 GRAS (minor cleanups)
2846 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
2849 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
2850 * type category 'ignored' killed as it was never used and were difficult
2852 * whether a type can cycle or not is now a flag, leaving room for more
2853 flags (as "ignored", if we feel the need one day ;)
2854 * Rename raw sockets to measurement sockets since "raw" has another
2855 meaning in networking community.
2858 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
2859 and offers features not belonging to GRAS but that most applications
2860 need. One day, it may be a set of plugins loadable at runtime.
2861 * New module: bandwidth
2862 bandwidth measurement between arbitrary nodes running this module. [MQ]
2864 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
2866 SimGrid (2.94) unstable; urgency=low
2868 The first beta release of SimGrid 3 !
2872 * Update the main page and the FAQ. Adding references to gforge.
2875 * Add a gras_os_getpid function.
2878 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
2879 * Extend the logs so that they also print PID, hostname, date, ... if
2881 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
2882 and kill the old version which were in testsuite/
2883 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
2887 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
2888 for users. Instead, each programming environment (GRAS, MSG,...) use it
2889 when needed to provide such a feature to users.
2890 Don't shortcut the mechanism or you will also shortcut the virtualization
2891 you need on the simulator.
2895 * Cleanups in configury with regard to compile optimization/warning flags.
2896 Also add -fno-loop-optimize to any powerpc since it's the optimization
2897 killing gcc (< 3.4.0).
2898 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
2899 needed by MSG examples complications
2900 * Borrow configury beautifications from PHP
2903 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
2904 warning (thanks loris for stumbling into this one).
2905 * Bugfix: stop loading private headers (gras_config.h) from the public
2909 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
2910 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
2911 RL would imply a DNS resolver, which is *hard* to do in a portable way
2912 (and therefore delayed).
2913 * Implement a real timer mechanism and use it in timing macros. This allows
2914 to avoid rounding errors and get a 0.000005 sec precision in timing
2915 macros. While I was at it, various cleanups:
2916 - allow to declare more than one timed section per file (fix a stupid bug)
2917 - move some private declaration to the right place
2918 - merge conditional execution and timing macros into emulation module
2919 - document the module
2920 - make sure the module cleanups its mess on gras_exit
2921 * Documentation improvements:
2922 - (new) how to compile applications using GRAS
2923 - (new) emulation support (timing macros)
2925 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
2927 SimGrid (2.93) unstable; urgency=low
2929 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
2932 - Use Paje properly where used. Still to be sanitized properly.
2933 - Portability fix: Add an implementation of the contexts using pthread
2937 - Add xbt_procname(): returns the name of the current process.
2938 Use it to show the current process's name in all logging.
2940 - fix detection of older flex version and the reaction, since we do
2941 depend on modern ones (we use lex_destroy)
2942 - Better separation of SG and RL in the libs: remove all simulation code
2943 from libgras. As a result, this lib is now only 200k when stripped.
2944 Some of the xbt modules may also be duplicated (two sets and such) and
2945 should be cleaned/killed before SG3.
2946 - Insist on using xlC on AIX because of weird problems involving gcc there.
2947 - Cleanup the make remote stuff. This is now done by scripts
2948 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
2949 mainly for our private use, but we're working on changing them to user
2952 - Bugfix: flush the socket on close only if there is some *output*.
2953 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
2955 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
2958 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
2960 SimGrid (2.92) unstable; urgency=low
2962 Alpha 3 on the path to SimGrid 3
2966 - New! First try of benchmarking macros.
2967 - New! First try so that gras_stub_generator generate deployment and
2968 remote compilation helpers.
2970 - Bugfix: Initialization fix in msg_test.
2974 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
2976 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
2978 - API Change: gras_os_sleep to take the amount of seconds as a double.
2979 Accepting an int was error prone since it was the only location where
2980 seconds were coded as such. It leaded to damn rounding errors.
2981 - Bugfix: Hard to belive that timers ever worked before this.
2983 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
2985 SimGrid (2.91) unstable; urgency=low
2987 Alpha 2 on the path to SimGrid 3
2991 - Bug fix in the lmm_solver.
2993 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
2994 through the function MSG_paje_output.
2995 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
2996 - It is possible to bound the rate of a communication in MSG with
2997 MSG_task_put_bounded() (was already in the previous version but I had forgotten
2998 to write it in the changelog).
2999 - Bug fix to let GRAS run on top of MSG until we move it directly on top
3004 - Various cleanups to the autotools stuff
3005 - Begin to move Gras examples to examples/gras/
3006 - Let make distcheck work again (yeah!)
3008 - documentation overhauled using doxygen.
3009 gtk-doc-tools is dead in SimGrid now.
3010 - Automatically extract all existing logging categories, and add the list
3011 to the documentation (long standing one, to say the less)
3013 - Cleanup the known architecture table. Reorder the entries to group what
3014 should be, and use a more consistent naming scheme.
3015 (some of the test dataset are still to be regenerated)
3016 - New! Allow library to register globals on each process just as userdata
3018 This is implemented using a xbt_dict and not a xbt_set, so we loose the
3019 lookup time (for now).
3020 Use it in msg and trp.
3021 This cleans a lot the internals and helps enforcing privacy of the
3022 headers between the gras components.
3023 - New! Add a timer mechanism, not unlike cron(8) and at(1).
3024 - Bugfix: gras_os_time was delirious in RL.
3025 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
3027 - Reenable GRAS now that it works.
3029 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
3031 SimGrid (2.90) unstable; urgency=low
3033 Alpha 1 on the path to SimGrid 3
3035 * It is a long time since the last release of SimGrid. I'm sorry about
3036 that but as I had told you, I was rewriting a lot of things. I apologize
3037 to those who had been reporting bugs to me and that I had not answered.
3038 If your bug is still in the new version, please tell me. Here is a
3039 summary of the main changes.
3041 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
3042 lead by Martin Quinson. As a consequence SimGrid gains a lot in
3043 portability, speed, and a lot more but you'll figure it out later.
3044 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
3045 I wanted to release the new MSG as soon as possible and I have
3046 broken GRAS, which is the reason why, for now, only MSG is fully
3047 functional. A laconic description of these projects is available
3048 in the documentation.
3050 * REVOLUTION 2: I have removed SG and I am now using a new simulation
3051 kernel optimized for our needs (called SURF but only the developers
3052 should use it). Hence, MSG is now roughly 30 times faster and I think
3053 that by rewriting a little bit MSG, I could event speed it up a little
3054 bit more. Beside the gain in speed, it is also much easier to encode a
3055 new platform model with SURF than it was with SG. More to come...
3057 * REVOLUTION 3: I have tried to change a little as possible the API of
3058 MSG but a few things really had to disappear. The main differences
3059 with the previous version are :
3060 1) no more m_links_t and the corresponding functions. Platforms are
3061 directly read from a XML description and cannot be hard-coded
3062 anymore. The same format is used for application deployment
3063 description. The new format is described in the documentation.
3064 Have a look in tools/platform_generation. There is a tiny script
3065 that converts from the old platform format to the new one. Concerning
3066 the application deployment format, parsing the old one is tricky.
3067 I think most of you should however be able to convert your files. If
3068 it is really an issue, I can write a C code that does the conversion.
3070 2) the toolbox tbx does not exist anymore. We now have a library
3071 with much more data-structures but without the hash-tables (we have
3072 dictionaries that are much faster).
3074 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
3076 *****************************************************************************
3077 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
3078 * don't feel like converting the oldies. (Mt) *
3079 *****************************************************************************
3082 Version 2.90: "the long awaited one"
3083 - Finished rewriting and debugging MSG. Rewrote the documentation.
3084 - disable GRAS for now since it needs to be ported to the newest SG
3087 - Finish the port to windows (using mingw32 for cross-compile)
3090 - Main loop and datastructures of SURF. A cpu resource object is
3091 functional. Surf can thus be used to create cpu's with variable
3092 performance on which you can execute some actions.
3094 2004-11-15 Martin Quinson
3095 - Port to ARM. Simply added the alignment and size descriptions. Should
3096 work, but the ARM machines are so slow that I didn't had the opportunity
3097 to 'make check' over there yet.
3099 2004-11-15 Arnaud Legrand
3100 - Trace manager now written. It uses a heap structure and is therefore
3101 expected to be efficient. It may however be speeded up (particularly
3102 when many events occur at the same date) by using red and black
3103 trees. One day maybe...
3104 - Max-min linear system solver written. It uses a sparse matrix
3105 structure taking advantage of its expected use. Most operations are
3106 O(1) and free/calloc are called as few as possible. The computation of
3107 the minimum could however be improved by using a red and black tree
3110 2004-11-03 Arnaud Legrand
3111 - Rename every gras_* function that was in xbt/ to its xbt_
3113 - Add a heap and a doubly-linked list to xbt
3114 - Added a dichotomy to the dictionaries. make check works as well before
3115 so I assume that the patch is correct. I do not know however if things
3116 run effectively faster than before now. :)
3118 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
3119 SimGrid, and the version number is bumped to 2.x
3121 2004-10-29 Martin Quinson
3122 - Introduction of the remote errors.
3123 They are the result of a RMI/RPC on the remote machine.
3124 ErrCodes being scalar values, you can't get the host on which those
3125 errors did happen. Extending the error mechanism as in Gnome is possible.
3126 No idea yet whether it is a good idea.
3128 2004-10-28 Martin Quinson
3129 - Interface revolution: the Starred Structure Eradication.
3130 I used to do typedef struct {} toto_t; and then handle *toto_t.
3131 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
3132 - ???_t is a valid type (builded with typedef)
3133 - s_toto_t is a structure (access to fields with .)
3134 - s_toto is a structure needing 'struct' keyword to be used
3135 - e_toto_t is an enum
3136 - toto_t is an 'object' (struct*)
3138 typedef struct s_toto {} s_toto_t, *toto_t;
3139 typedef enum {} e_toto_t;
3140 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
3141 s_toto_t) is private.
3143 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
3144 so that it can set the variable to NULL. It was so for dicts and sets,
3145 it changed for dynars.
3147 - Fix a bunch of memleaks in dict_remove
3148 - Fix a bug in sg/server_socket opening: it failed all the time.
3150 2004-10-07 Martin Quinson
3151 - Speed up dynar lookup operation a bit.
3153 gras_dynar_get is dead.
3155 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
3156 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
3157 (which gives you the address of the stored data).
3159 gras_dynar_get_as is an helpful macro which allows you to retrieve a
3160 copy of the data using an affectation to do the job and not a memcpy.
3162 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
3163 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
3165 It does not really speedup the dynar test because they are
3166 setting elements all the time (and look them seldom). But the dict does
3167 far more lookup than setting.
3169 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
3171 2004-10-05 Martin Quinson
3172 - Allow to (en/dis)able the cycle detection at run time.
3174 Whether we should check for cycle or not is now a property of each
3175 datatype. When you think there may be some cycle, use datadesc_cycle_set.
3176 datadesc_cycle_unset allow to remove this property when previously set.
3178 Note that the cycle detection is off by default since it impacts the
3179 performance. Watch the data you feed GRAS with ;)
3181 This property is hereditary. Any element embedded in a structure having it
3182 set have it set for the time of this data exchange.
3184 You should set it both on sender and receiver side. If you don't set it on
3185 sender side, it will enter an endless loop. If you forget on receiver
3186 side, the cycles won't be recreated after communication.
3188 - Header reorganization.
3189 Kill gras_private.h, each submodule must load the headers it needs.
3191 2004-10-04 Martin Quinson
3192 - Interface revolution: do not try to survive to malloc failure.
3194 Now, gras_malloc and friends call gras_abort() on failure.
3195 As a conclusion, malloc_error is not a valid error anymore, and all
3196 functions for which it was the only gras_error_t return value are
3197 changed. They now return void, or there result directly.
3198 This simplify the API a lot.
3200 2004-09-29 Martin Quinson
3201 - Re-enable raw sockets.
3202 Created by gras_socket_{client,server}_ext;
3203 Used with gras_raw_{send,recv}
3206 It should allow to kill the last bits of gras first version soon.
3208 This is not completely satisfactory yet (duplicate code with
3209 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
3212 - Simplify transport plugin (internal) interface by not passing any
3213 argument to _server and _client, but embedding them in the socket
3216 2004-09-28 Martin Quinson
3217 - Finish the port to AIX.
3218 autoconf was my problem (segfault within the malloc replacement
3219 function. No idea why)
3221 2004-09-16 Martin Quinson
3222 - Fix some size_t madness on 64bit architectures.
3224 2004-09-08 Martin Quinson
3225 - Reduce the number of system headers loaded, overload some more system
3226 calls (such as malloc to cast the result of the system one, and work
3228 - Fix and reintroduce the config support
3230 2004-09-07 Martin Quinson
3231 - Source code reorganization to allow Arnaud to surf all over there.
3232 - Allow to document the logging categories.
3233 - Remove all uppercase from logging categories and useless cleanup in names.
3235 2004-08-18 Martin Quinson
3236 Version 0.6.2 (protocol not changed; API changed)
3237 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
3238 gras_error_t), and NULL when not found. Functions expecting a msgtype
3239 as argument (msg_wait; msg_send) deal with NULL argument by providing a
3240 hopefully usefull message.
3241 - Portability to prehistoric sparcs again
3243 2004-08-17 Martin Quinson
3244 Version 0.6.1 (protocol not changed; ABI not changed)
3245 - prealloc some buffers to speed things up
3247 2004-08-11 Martin Quinson
3248 Version 0.6 (protocol not changed; ABI expended)
3249 - The parsing macro can deal with the references, provided that you add
3250 the relevant annotations (using GRAS_ANNOTE(size,field_name))
3252 2004-08-09 Martin Quinson
3253 Version 0.5 (protocol not changed; ABI changed)
3254 - Allow to off turn the cycle detection code in data exchange at
3255 compilation time. It should be at run time, but I'm short of time (and
3256 the config stuff is still broken). That way, we keep dict out of the
3257 critical path, which is good because the performance is poor:
3258 - search not dichotomial yet
3259 - dynar give no way to access their content and memcpy everytime
3260 - In composed data description (struct, ref and so on), stop foolness of
3261 keeping the subtype's ID, but store the type itself. This keeps sets out
3262 of the critical path, which is good since they rely on dynar and
3263 dictionnaries. The only loose of that is that we cannot detect the
3264 redeclaration of a structure/union with another content (but I'm not sure
3265 the code detected well this error before anyway). We still can detect
3266 the redefinition discrepancy for the other types.
3267 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
3268 it breaks the code because of type-punning used all over the place).
3269 This breaks on all non-gcc architectures (for now).
3271 All those changes (plus the buffer of last time) allow me to gain 2 order
3272 of magnitude on cruel tests consisting of 800000 array of integers on two
3273 level of a hierarchical structure (200 secondes -> 4 secondes)
3276 - the selector of reference must now return the type it points to, not
3277 the ID of this type.
3279 2004-08-06 Martin Quinson
3280 Version 0.4 (protocol changed; ABI not changed)
3281 - Allow to pass --gras-log argument to processes in simulation mode. Really.
3282 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
3283 - Implement a buffer transport, and use it by default (it relies on tcp in
3284 real life and on sg in simulation).
3285 That's a bit hackish since I had a new field to the structure to store
3286 its data without interfering with the subtype ones. Inheritance
3287 is tricky in C. And that's a kind of reverse inheritance with one class
3288 derivating two classes. Or maybe a game with java interfaces. Anyway,
3289 that's damn hard in C (at least).
3290 Moreover, I got tired while trying to ensure plugin separation and
3291 genericity in SG mode. MSG wants me to do weird things, so let's go for
3292 cruel hacks (temporarily of course ;).
3293 See comment in transport_private.h:71
3294 - do not include all the _interface headers in private but in the files
3295 which really need them (to cut the compilation time when they are
3298 2004-07-26 Martin Quinson
3299 Version 0.3 (protocol not changed; ABI changed)
3300 - Major overhault of the datadesc interface to simplify it:
3301 - shorted the function names:
3302 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
3303 - add a trivial way to push/pop integers into the cbps without malloc.
3304 This allows to make really generic sub_type description, which simply
3305 pop their size of the stack.
3306 - add a function gras_datadesc_ref_pop_arr() which does what users want
3307 most of the time: Declare a dynamic array (which pops its size of the
3308 stack) and declare a reference to it. Poor name, but anyway.
3309 - kill the post-send callback, add a post-receive one
3311 2004-07-23 Martin Quinson
3312 Version 0.2 (protocol changed; ABI changed)
3313 - add some testing for cpbs in the test cases, and fix some more bugs.
3314 This invalidate again the little64 data file, since I cannot regenerate
3316 - remove an awfull optimization in the logging stuff, allowing me to:
3317 - understand it again
3318 - learn gcc how to check that the argument match the provided format
3319 - fix all errors revealed by gcc after that
3320 - internal keys of dict are not \0 terminated. Deal with it properly in
3321 loggings instead of segfaulting when the user want to see the logs :-/
3323 2004-07-22 Martin Quinson
3324 - Fix some stupid bug preventing cbps (callback postit) from working
3326 2004-07-21 Martin Quinson
3327 - Some documentation cleanups
3328 - remove the useless last argument of msgtype_declare
3329 - rename the Virtu functions to fit into the 'os' namespace
3330 - move headers src/include -> src/include/gras/ and stop fooling with
3331 gras -> . symbolic link
3332 - make distcheck is now successful
3334 2004-07-19 Martin Quinson
3336 - Build shared library also
3337 - Install html doc to the right location
3338 - stop removing maintainer files in make clean
3339 - build tests only on make check
3341 2004-07-13 Martin Quinson
3343 - No major issue in previous version => change versioning schema
3344 - Re-enable little64 convertion test now that Abdou kindly regenerated the
3345 corresponding dataset.
3347 2004-07-11 Martin Quinson
3349 - Get it working with any kind of structure (we can compute the padding
3350 bytes remotely for all the architectures I have access to)
3351 - Implement the structure parsing macro (still not quite robust/complete)
3352 - Improvement to the remote testing toysuite
3354 2004-07-10 Martin Quinson
3355 [autoconf mechanism]
3356 - get ride of a bunch of deprecated macros
3357 - actually run the test for two-compliment, not only compile it :-/
3358 - test whether the structures get packed (and bail out if yes. Damn.
3359 Alignment is a serious matter)
3360 - test whether the structures get compacted (but respecting the alignment
3361 constraints of each types)
3362 - test whether the array fields of structures can straddle alignment boundaries
3364 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
3365 (took me 2 hours to find that bug, looking at the wrong place)
3366 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
3367 before sending/receiving and are used to compute the offsets of fields
3368 - Given that padding size depend even on compiler options, keep track of
3369 alignment and aligned_size only for the current architecture. Not a big
3370 deal since we send structure fields one after the other (seems
3372 - Add the datastructure used for IEEE paper by the PBIO guys to the test
3373 program, let it work on linux/gcc/little32. portability todo.
3375 2004-07-08 Martin Quinson
3376 - import and improve remote compilation support from FAST
3377 - make sure make check works on half a dozen of machines out there
3379 2004-07-07 Martin Quinson
3380 Let's say it's version 0.0.3 ;)
3381 - Implement conversions (yuhu!)
3382 - Let it work on solaris (beside conversion, of course)
3383 - Stupid me, using rand() to generate the conversion datatests in not wise.
3385 2004-07-06 Martin Quinson
3386 - Let make dist work, since I'm gonna need it to compile on remote hosts
3387 - Let Tests/datadesc_usage write the architecture on which the file was
3388 generated as first byte.
3389 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
3390 architecture descriptions.
3391 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
3392 on those architectures.
3393 - Optimization: send/recv array of scalar in one shoot
3395 2004-07-05 Martin Quinson
3396 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
3398 - Plug a whole bunch of memleaks
3399 - each process now have to call gras_{init,exit}. One day, their log
3400 settings will be separated
3401 - Continue the code factorisation between SG, RL and common in Transport.
3403 2004-07-04 Martin Quinson
3405 - Redistribution between SG and RL.
3406 We wanna have to accept in SG, so move accepted related parts of RL in
3407 the common part. (more precisely, the dynar of all known sockets is no
3408 more a static in transport.c, but part of the process_data)
3410 [gras_stub_generator]
3411 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
3413 2004-07-03 Martin Quinson
3414 - Create a new log channel tbx containing dict, set, log, dynar (to shut
3415 them all up in one shot)
3417 - Fix the ugly case of reference to dynamic array.
3418 - New (semi-public) function gras_datadesc_size to allow the messaging
3419 layer to malloc the needed space for the buffer.
3421 - gras_socket_close now expect the socket to close (and not its address to
3422 put NULL in it after it). This is because the socket passed to handlers
3423 is one of their argument (=> not writable).
3425 - propagate the interface cleanup from last week in datadesc, ie remove a
3426 superfluous level of indirection. User pass adress of variable
3427 containing data (both when sending and receiving), and not of a variable
3428 being a pointer to the data. Let's say that I like it better ;)
3429 The price for that is constructs like "int msg=*(int*)payload" in
3430 handlers, but it's a fine price, IMHO.
3432 - Let it work in RL (yuhu)
3434 2004-06-21 Martin Quinson
3436 - porting SG plugin and SG select to new standards (works almost).
3437 - plug memleaks and fix bugs around.
3440 - cleanup the prototype of data recv and force users to specify when they
3441 want to handle references to objects. Test case working even for cycles.
3442 - plug memleaks. Valgrind is perfectly ok with this.
3444 2004-06-12 Martin Quinson
3446 - cleanup the separation between plugin and main code in plugin creation
3448 2004-06-11 Martin Quinson
3450 - Reput hook for raw sockets, needed for BW experiments
3451 - kill a few lines of dead code
3452 [Data description] Interface cleanup
3453 - gras_datadesc_by_name returns the searched type or NULL.
3454 That way, no variable is needed to use a type desc once, which makes
3456 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
3457 two parameters were strings (field name, type name), leading to
3459 [Dicos] Interface cleanup
3460 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
3461 This is consistant with the dynar API.
3463 2004-04-21 Martin Quinson
3465 - Porting to new standards.
3467 - interface cleanup.
3468 There is no bag anymore, no need to take extra provision to mask the
3469 pointers behind "ID".
3470 Better splitup of functions between files create/exchange/convert.
3471 This is still a bit artificial since convert and receive are so
3472 interleaved, but anyway.
3474 - add a queued message list to procdata (the ones not matching criteria
3476 - factorize some more code between SG and RL wrt procdata
3478 - use gras_exit in example to track memleaks
3479 - get rid of gs_example now that GS is properly integrated into gras
3480 - update run_test to integrate the latest tests (datadesc)
3482 - rename WARNINGn macros to WARNn since it prooved error-prone
3484 2004-04-19 Martin Quinson
3486 - register init/exit functions within gras module mechanism
3487 - send/receive function.
3488 Convertion is not implemented, but short-cutted if not needed.
3489 struct/array elements are sent one by one (instead of block-wise), but
3490 nobody really cares (yet). Get a prototype before optimizing.
3491 - tests (using a file socket) for DD send/receive on:
3492 - base types: int, float
3493 - array: fixed size, string (ie ref to dynamic string)
3494 - structure: homogeneous, heterogeneous
3495 - chained list, graph with cycle
3496 Believe it or not, valgrind is not too unhappy with the results. The
3497 cycle happily segfaults, but the others are ok. And I'm sick of pointers
3501 - Bugfix when using a filename explicitely (instead of '-')
3503 2004-04-09 Martin Quinson
3505 - factorize more code between RL and SG in socket creation
3506 - Complete the implementation and tests of:
3508 o file (only in RL, and mainly for debugging)
3510 I lost 3 days to design a portable address resolver, and then decided
3511 that the prototype mainly have to run on my box.
3512 Addressing portability too early may be like optimizing too early :-/
3514 - use gras_init in the Tests instead of the crappy parse_log_opt
3515 (the latter function is removed)
3516 [Conditional execution]
3517 - New functions: gras_if_RL/gras_if_SG (basic support for this)
3518 [Code reorganisation]
3519 - Get rid of libgrasutils.a since it makes more trouble than it solves.
3520 Build examples against the RL library, since there is no way to disable
3521 its creation for now.
3523 For information, the beginning of coding on GRAS was back in june
3524 2003. I guess that every line has been rewritten at least twice since