1 SimGrid (3.18) NOT RELEASED YET (target: December 24 2017)
4 - Link::name() is deprecated and will be removed in v3.21, use instead
6 - Mailbox::getName() changed to return a std::string, use instead
7 Mailbox::getCname() to get a char*.
8 - Storage::getName() changed to return a std::string, use intead
9 Storage::getCname() to get a char*.
12 - Deprecate MSG_task_get_flops_amount(). Its semantic was weird:
13 before the start it returned the total amount of flops;
14 after it returned the ratio of remaining work. Split it:
15 MSG_task_get_initial_flops_amount() for first behavior
16 MSG_task_get_remaining_work_ratio() for the second one.
17 This fixes GitHub's #223 using PR #237. Thanks Michael Mercier.
20 - Define class simgrid::xbt::Path to manage file names.
21 - Removed unused functions:
22 - xbt/file.h: xbt_basename(), xbt_dirname(), xbt_getline()
23 - xbt/str.h: xbt_str_join()
24 - xbt/heap.h: use std::priority_queue or boost::heap instead
27 - New link_energy plugin for the consumption of the links.
30 - Remove the undocumented/untested tag <include>
33 - Remove viva specific tracing as the tool is no longer maintained
35 SimGrid (3.17) Released October 8 2017
37 The Drained Leaks release: (almost) no known leaks despite the tests.
39 Even very long simulations will preserve your memory: our testsuite
40 stresses SimGrid for over 45mn on fast machines for a coverage of
41 over 80%, and there is only one single known leak, of about 4kb.
45 - Comm.detach(): start and forget about asynchronous emission. A cleanup
46 handler may be given to free resources if the comm cannot be completed.
47 - this_actor::send(mailbox) is now mailbox->put()
48 - New: simgrid::s4u::Comm::wait_all()
49 - New: Host.execute() for remote executions.
52 - Unused option network/sender-gap is removed.
55 - Deprecate MSG_task_isend_with_matching(): This unused feature
56 really complicates our internals. Will be removed in v3.20.
59 - Improved context termination. It is now possible to free resources, even
60 when a process is forcibly killed.
61 - ContextBoost: add support for Boost versions above 1.61.
64 - Bring back run-time option --cfg=exception/cutpath to remove exception
66 - Removed unused functions:
67 - xbt/str.h: xbt_str_split_str(), xbt_str_subst(), xbt_str_ltrim(),
68 xbt_str_rtrim(), xbt_str_trim().
69 - xbt/xbt_os_thread.h: xbt_os_thread_cancel(), xbt_os_thread_detach().
72 - Removed header files obsolete since SimGrid 3.12:
73 msg/datatypes.h, msg/msg.h, simdag/datatypes.h, simdag/simdag.h.
75 - #3: SD_exit should be made optional
76 - #120: Memory leak when the processes are forcefully killed
77 - #159: Threading test regression in Actor refcounting
78 - #170: simgrid::s4u::Comm::wait_any() returns too many comms
79 - #185: simgrid::s4u::Engine::instance()->shutdown() segfaults
80 - #186: Actor::killAll() segfaults if some process is blocked on wait()
81 - #191: VM migration and pstate
82 - #192: Updating the energy consumptions of all hosts crashes with VMs
83 - #195: All actors have PID=0 in the logs
84 - #204: Sometimes segfault with thread contexts and mmap privatization
85 - #222: Actor::kill() doesn't really kill and segfaults
86 - #225: Actor::kill() doesn't really kill when victims are doing a join()
88 ----------------------------------------------------------------------------
90 SimGrid (3.16) Released June 22. 2017.
92 The Blooming Spring Release: developments are budding.
95 - FreeBSD: Disable SMPI mmap privatization, switch automatically to dlopen.
96 - Mac, BSD: dlopen+thread broken, switch automatically to raw contexts.
97 - Java JAR file should be finally fully working on Mac OSX too.
99 XML platforms: Switch to platform v4.1 format.
100 * This is (mainly) a backward compatible change: v4 are valid v4.1 files
101 - <zone> can be used as a synonym for the now deprecated <as>
102 - <zoneRoute> can be used as a synonym for the now deprecated <asroute>
103 - <bypassZoneRoute> an be used as a synonym for the now deprecated <bypassAsRoute>
104 - <actor> can be used as a synonym for the now deprecated <process>
105 - state_file and avail_file periodicity is now easier to express
106 (check the documentation) the old behavior should still work.
107 * Storage: not backward compatible, but it seems that nobody ever used it
108 - Remove attribute 'content_type' of <storage_type>: was never used
109 - Make attribute 'model' of <storage_type> optional: for future usage
110 - Remove Bconnection model property: was never (in)validated. Replaced by
111 the maximum of the read and write bandwidth as a resource constraint.
114 - New and Backwards Compatibility break:
115 SD_simulate_with_update (double how_long, xbt_dynar_t changed_tasks_dynar)
116 When one wants to get the list of tasks whose states have changed during a
117 simulation round, s/he has to allocate and free a dynar and use it as
118 argument to this function. The former SD_simulate (double how_long)
122 - Allow multicore VMs, with the correct sharing (unless you overcommit)
123 BUG: vCPU overcommitting still leads to buggy sharing, though. WIP.
126 - New function to update the consumption of all hosts at once.
127 - Fix the model for multi-core hosts, linear in the amount of busy
128 cores with an abnormality for pIdle (see paper).
129 BUG: Still not satisfactory for ptask on mono-cores.
132 - The netzone are now available from the MSG API.
133 The old names still work, but are now deprecated.
136 - New algorithm to privatize globals: dlopen, with dynamic loading tricks
137 - New option: smpi/keep-temps to not cleanup temp files
138 - New option : smpi/shared-malloc-blocksize . Relevant only when global shared
139 mallocs mode is used, allows to change the size of the fake file used
140 (default 1MB), to potentially limit the number of mappings for large runs.
141 - Support for sparse privatized malloc with SMPI_PARTIAL_SHARED_MALLOC()
142 - Fortran ifort and flang compilers support
143 - New RMA calls supported (experimental) :
144 - MPI_Win_allocate, MPI_Win_create_dynamic, MPI_Win_attach
145 - MPI_Win_detach, MPI_Win_set_info, MPI_Win_get_info
146 - MPI_Win_lock_all, MPI_Win_unlock_all, MPI_Win_flush
147 - MPI_Win_flush_local, MPI_Win_flush_all, MPI_Win_flush_local_all
148 - MPI_Op_commutative, MPI_Fetch_and_Op, MPI_Compare_and_swap
149 - MPI_Rput, MPI_Rget, MPI_Raccumulate, MPI_Rget_accumulate
152 - New: this_actor::isMaestro() returns whether we are in kernel mode.
153 - Behind the scene, ActivityImpl are now automatically refcounted.
154 Removing this nasty bottleneck will greatly simplify our internals.
157 - Replay: New function xbt_replay_action_get():
158 Retrieve the function previously associated to an event type.
159 - DROPPED FUNCTION: xbt_str_varsubst()
160 - DROPPED MODULE: strbuff. We don't need it anymore.
161 - DROPPED MODULE: matrix. We don't need it anymore.
162 - DROPPED MODULE: lib. We don't need it anymore.
164 -- Thu Jun 22 22:48:12 CEST 2017 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
166 SimGrid (3.15) Released March 22. 2017
168 The Spring Release: continuous integration servers become green
169 We fixed even the transient bugs on all target architectures:
170 Linux (CentOS, Debian, Ubuntu, Fedora), Mac OSX (Mavericks, El Capitan)
171 Windows, FreeBSD, NetBSD.
173 - Rename NetCards to NetPoints.
174 This was intended to help NS3 users, but that's not a netcard.
175 That's a point in the routing algorithm, let's avoid wrong simplifications.
178 - New: MSG_process_yield(). Stop and yield to other processes.
179 - New: MSG_process_daemon(). Daemon processes are automatically killed
180 when the last non-daemon process terminates
181 - New: MSG_process_ref/unref(). Fiddle with the process refcounting.
182 - Renamed MSG_energy_plugin_init() -> MSG_host_energy_plugin_init()
183 to make room for the upcoming network energy plugin.
184 - Drop MSG_host_get_current_power_peak: duplicates MSG_host_get_speed
187 - Ensure that an actor can kill itself with Process::exit()
188 - Kill the obscure NativeException. Nobody want to survive the issues
189 it denotes, so use JniException that is a RuntimeException (not to
190 be caught explicitly).
191 - Partial bug fix in initialization. SimGrid flags on command line were
192 consumed at C level but stayed in the original Java String[] args.
193 This could mess users' args[i] if SG flags were not put at the end of
195 The SimGrid flags are now removed from the Java arguments. However,
196 the number of arguments REMAINS UNCHANGED. It is then UNSAFE to test
197 if args.length is greater than the number of YOUR OWN ARGUMENTS.
198 It might be if you have --log or --cfg flags in the command line.
199 - Fix numerous memleaks all around the place. In particular, around VMs.
203 - s4u::onPlatformCreated: right before the simulation starts
204 - s4u::onSimulationEnd: right after the main simulation loop
205 - s4u::onTimeAdvance: right after a clock change (time is discrete)
206 - s4u::Host::onSpeedChange: when the pstate is changed, or when an
207 event from the availability_file changes the avail speed.
208 - Links are now usable from s4u
209 - New: Engine::hostList() and Engine::hostCount(). Still clumsy.
210 - New: Actor::suspend(), Actor::resume(), and Actor::migrate(new_host)
211 - New examples: The conversion of MSG examples to S4U has begun
212 - Actors: create, kill, migration, and suspend
213 - Applications: master-worker and token-ring
214 - Action replay: communications and storage
215 - Drop Host::getPstateSpeedCurrent() which duplicates Host::speed()
218 - Backwards Compatibility breaks
219 - The SD_route_get_list and SD_route_get_size functions have been removed.
220 They are replaced by the unique
221 void sg_host_route(sg_host_t src, sg_host_t dst, xbt_dynar_t links)
222 The route from src to dst is built in the links dynar whose size can
223 be obtained with xbt_dynar_length.
224 - The SD_route_bandwidth and SD_route_latency functions have been replaced by
225 sg_host_route_bandwidth and sg_host_route_latency.
226 Macros ensure the backwards compatibility, but you should fix your code
229 - Major C++ rewrite ongoing (SMPI used to be C compiled in C++).
230 This can break codes using SMPI internals (from private.h instead of the public smpi.h).
231 - Bump our claim of support from MPI 1.1 to MPI 2.2.
232 We don't support 100% of it, but it should be enough. Contact us if not.
233 - MPI_Win_lock/unlock, MPI_Get_accumulate support added (as for all RMA, implementation is
234 naive and probably inaccurate)
235 - New algorithm for SMPI_SHARED_MALLOC: global, where all blocks are
236 mapped onto a unique small file using some system magic.
237 - Bugfix: smpirun was sometimes misusing hostfile when wrongly terminated
238 - Fortran: cleanups, fixes, support of user-added operations
239 - RMA: MPI_Accumulate are applied in correct order.
240 - RMA: MPI_Win_{complete/post} shouldn't miss messages anymore.
241 - Better support for MPI_IN_PLACE
242 - Support for MPI_Win attrs and keyvals.
243 - Support MPI_Comm_group_create, MPI_Type_size_x
244 - MPI ops should be properly applied to all allowed types
245 - Replace implementation of MPI_Bcast "scatter followed by rdb allgather"
246 algorithm by a non failing one from mpich.
249 - Kill the fifo data container: we don't use it anymore.
252 - A <cluster> can now be created with different speed values to represent pstates.
253 see examples/platforms/energy_cluster.xml for an example.
255 SimGrid (3.14.159) Released December 28. 2016
257 The previous release was only a crude approximation of a Pi release;
258 this one should be a bit better.
260 - Revert a last minute change that broke on Mac OSX.
261 - Fix the changelog and NEWS files.
262 - Improve the documentation, in particular of the routing module.
263 - Integrate some patches flying around in Debian.
265 SimGrid (3.14) Released December 24. 2016
268 * The whole documentation was reworked and reorganized. There is
269 still much room for improvement here, but we're on it.
272 * We now need python3 for our testing infrastructure.
273 * Model checking needs libevent
276 * Now works on FreeBSD
279 * Privatization now works on FreeBSD
281 * Privatization is now activated by default in smpirun
282 You can turn it off with -no-privatize if something goes wrong.
284 * Call-location tracing for SMPI.
285 You can add the exact location (filename / linenumber) of an MPI call to
286 your trace files and slow down or speed up the simulation between two
287 consecutive calls by using an adjustment file (see the documentation).
289 * Fixed computation of timings for MPI_Send, MPI_Recv & possibly also others
290 We've found a bug that prevented SMPI to account for MPI_Send, MPI_Recv
291 and others (in some cases) in a correct way. That is, the smpi/os, smpi/or
292 values were ignored in some cases. The timings of these functions can now
293 be significantly different.
295 * smpi/cpu-threshold:-1 should become smpi/simulate-computation:no
296 smpi/running-power is renamed to smpi/host-speed
298 * smpi/grow-injected-times option to enable or disable multiplication of the
299 timings injected in MPI_Iprobe, or MPI_Test. Enabled by default, which can
300 make simulation less precise (but also much faster).
302 * smpirun script should be (much) faster for large deployments.
304 * SMPI tracing : fixed issue with poor matching of send/receives.
306 * Replay : Fix broken waitall
308 New functions and features
309 * MSG_parallel_task_execute_with_timeout, to timeout computations.
311 Dropped / renamed functions and features
312 * msg_mailbox_t and associated functions. Use s4u::Mailbox instead.
313 - MSG_mailbox_is_empty() -> Mailbox::empty()
314 - MSG_mailbox_front() -> Mailbox::front()
315 - MSG_mailbox_get_by_alias() -> simgrid::s4u::Mailbox::byName(name)
316 - MSG_mailbox_get_task_ext() -> MSG_task_receive_ext()
317 - MSG_mailbox_get_task_ext_bounded -> MSG_task_receive_ext_bounded
318 - MSG_host_(get/set)_params -> MSG_vm_(get/set)_params
319 * Don't pass the free_f parameter to property related functions:
320 - MSG_host_set_property_value()
321 - MSG_as_router_set_property_value()
322 - MSG_storage_set_property_value()
323 * VM properties. Since msg_vm_t are msg_host_t, just use
324 MSG_host_get_property_value() and friends
325 * VM I/O related things:
326 - Ignored parameter of vm_create: core_nb, disk_path and disk_size.
327 - Unimplemented save/restore methods
328 * MSG_as_router_get_property_value() was redundent with
329 MSG_environment_as_get_property_value().
330 - Removed MSG_as_router_*propert*() functions
331 - Added MSG_environment_as_set_property_value() for consistency
332 * xbt heterogeneous dictionnaries (created with xbt_dict_new()).
333 Well, they are still there for now, but deprecated with a warning.
334 Please switch to xbt_dict_new_homogeneous() before this is removed
336 * Task affinity. Its intended behavior (that was very badly tested
337 and probably not really working) was deceiving what most users
338 would have hoped here.
339 * xbt_os_sem_get_value: unused internally, deprecated on OS X El Capitan
340 * Option network/coordinates is now useless and should be dropped.
343 * Added option storage/max_file_descriptors to allow more than 1024 files opened
346 * Added option maxmin/concurrency_limit to allow more than 100 processes per host
347 * Added Dragonfly topology support
350 * Add Exa- and Peta- units such as EiB, EB, Eib, Eb for size, and
351 EiBps, EBps, Eibps, Ebps for bandwidth.
352 They may become useful to some lucky ones.
355 * New functions: msg.Comm.waitAll() and msg.Comm.waitAny()
356 * ex/app_tokenring: new example, very similar to the MSG Token Ring
357 * ex/async_waitAll: new example, on asynchronous communications
360 * Memory usage should be decreased for simulations with a large number
361 of processes. This also helps for SMPI.
363 SimGrid (3.13) stable; urgency=low
365 The Half Release, a.k.a. the Zealous Easter Trim.
367 - We removed half of the lines, that were mostly experimental cruft.
368 v3.12 lasted 286000 lines of code, v3.13 is only 142000 lines
369 (not counting blanks and comments -- according to openhub.net)
370 - The internals are now compiled in C++ (and will soon be clean C++)
371 - We removed 75 klines of XML, 12 klines of Java, 5 klines of cmake,
372 59 klines of C, etc. We added only 29 klines of C++ in replacement.
374 * Backwards Compatibility breaks
375 - Removed Lua simulation bindings (switch to C or Java for that).
376 Lua can still be used to describe platforms
377 - Removed Java kernel plug-ins.
378 Will be reintroduced after the ongoing major internals reorg.
380 - the following functions were removed.
381 They were too specific and should be reimplemented in a generic
382 way, with filter function.
383 - MSG_task_listen_from_host
384 - MSG_mailbox_get_count_host_waiting_tasks
385 - MSG_mailbox_put_with_timeout was removed.
386 Please use MSG_task_send_with_timeout instead.
388 - the SD_application_reinit function was removed. It has been a noop for a while.
389 - The ACCESS_MODE of SD_workstation has been removed. This feature was not really usable and should soon be
390 replaced by a more flexible mechanism.
391 - The following functions thus do not exist anymore
392 - SD_workstation_get_access_mode
393 - SD_workstation_set_access_mode
394 - SD_workstation_get_current_task
395 - Basic estimation functions have been removed but can easily be replaced
396 - SD_route_get_communication_time => SG_route_get_latency() + amount / SD_route_get_bandwidth()
397 - SD_workstation_get_computation_time => amount / sg_host_speed()
399 - VM.setBound(int load) is now VM.setBound(double bound) to meet the MSG semantics.
400 Use VM.getSpeed()*load/100 for the legacy behavior.
402 - option enable_tracing was removed. It was not doing anything for a while.
403 - In the ModelChecker:
404 - the model-checker now ptraces the model-checked process which means
405 you cannot use a debugger on the latter anymore (we might make this
406 optional in the feature);
407 - removed soft-dirty page tracking;
408 - remove model-checked side snapshot management,
409 MC_snapshot() and MC_compare_snapshot();
410 - keep the MC_cut() function as a stub (it was not really working
411 in the previous release).
414 * All options are consistently in kebab-case. Old names are kept as alias.
417 * Switch to platform v4 format.
418 - Rename from 'power' to 'speed' the attributes describing the amount of
419 flops that a <host>, <peer>, <cluster> or <cabinet> can deliver per second.
420 - In <trace_connect>, attribute kind="POWER" is now kind="SPEED".
421 - In <host> and <link>, attributes availability and state are gone.
422 It was redundent with state and availability traces, and with peak values.
423 - In <cluster>, attributes availability_file and state_file are gone.
424 It was too complex and unused.
425 - Kill <gpu>. Was not doing anything.
426 - The DOCTYPE points to the right URL:
427 http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd
428 (the file at this address now documents the changelog since its v1)
429 - A warning is emitted for unit-less values (they are still accepted).
430 - speed. Default: 'f' or 'flops'. Also defined:
431 'Yf', 'Zf', 'Ef', 'Pf', 'Tf', 'Gf', 'Mf', 'kf'
432 'yottaflops', 'zettaflops', 'exaflops', 'petaflops', 'teraflops', 'gigaflops', 'megaflops', 'kiloflops'
433 - bandwidth. Default: 'Bps' bytes per second (or 'bps' for bits but 1 Bps = 8 bps)
434 Also defined in bytes: 'TiBps', 'GiBps', 'MiBps', 'KiBps', 'TBps', 'GBps', 'MBps', 'kBps', 'Bps'
435 And the same in bits: 'Tibps', 'Gibps', 'Mibps', 'Kibps', 'Tbps', 'Gbps', 'Mbps', 'kbps', 'bps'
436 - latency. Default: 's' second. Also defined:
437 'w' week, 'd' day, 'h' hour, 'm' minute, 'ms' millisecond, 'us' microsecond, 'ns' nanosecond, 'ps' picosecond
439 * bin/simgrid_update_xml can upgrade your files automatically (won't convert unit-less values)
440 tools/sg_xml_unit_converter.py may help (but it's just a warning and will probably ever be).
443 * s4u::Host is now the preferred public interface to the Host features.
444 sg_host_* functions are C bindings to the exact same behavior
445 MSG_host_* and SD_workstation_* are #define to the sg_host_* ones
448 * The examples were completely reorganized (in C and Java), for your browsing pleasure.
449 * Kill all deprecated functions (the ones you had when declaring MSG_DEPRECATED).
450 They were deprecated since a few years, and probably did not even compile anymore.
453 * The API has been profoundly modified to directly use the core objects instead of redefining its own.
454 SD_Workstation_t and SD_link_t are now sg_host_t and sg_link_t respectively.
455 Some functions have also been renamed for consistency. Backward compatibility is maintained, but users are
456 encouraged to update their codes. A list of the modified functions can be found at the end of
457 include/simgrid/simdag.h
460 * simgrid::simix::kernelImmediate() is the closure callback. It ensures that
461 the lambda or closure passed as a parameter will run in kernel mode.
462 All the callback functions should be rewritten to that interface at some point.
465 * Reorganizing and cleaning the internals all around the place.
468 * Remove old default barrier/bcast buggy algorithms (see #18407)
469 * Various bug fixes to handle more codes
470 * Remove the need for the --foreground option of smpirun (it is still
471 accepted for backward compatibility).
474 * Kill the setset data container: MC don't use it anymore.
475 * Kill the queue data container: it made more sense with GRAS.
476 * Kill the xbt_peer_t data type: it's useless without GRAS.
477 * Kill rm_cb feature of config sets: it was never useful.
478 * Kill graphxml parsing feature. It was not used.
479 * Kill the deprecated code protected by XBT_USE_DEPRECATED
481 - xbt_dynar_sort_strings(), when the content is char*
482 - xbt_str_parse_int / xbt_str_parse_double, wrapping strtol/strtod
483 They throw exceptions on invalid input;
484 * C++ support for declaring CLI flags (simgrid::config::Flag);
485 * class for abstracting different signal backends (simgrid::xbt::signal).
486 with no external dependencies (we need very simple signals).
489 * refactoring and cleanup of the code;
490 * ongoing process to cleanly separate the model-checking algorithms
491 from the code model-checking support.
493 -- Wed Apr 27 21:00:53 CEST 2016 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
495 SimGrid (3.12) stable; urgency=low
497 The Facelift Release.
500 * Require g++ v4.7 at least to not speak prehistorical C++.
501 * Require Boost 1.48 (for signal2 component).
502 * Java must be version 7 at least when activated.
503 * Builds on Windows again (including Java bindings).
504 * Tracing is now always enabled (no way to turn it out)
505 * Remove GTNetS. It was not working anyway.
506 * Various cleanups in the cmake scripts.
507 * Move headers around to sort them out on installed systems:
508 - instr/instr.h -> simgrid/instr.h
509 - instr/jedule/* -> simgrid/jedule
510 - simdag/datatypes.h was removed
511 - simdag/simdag.h -> simgrid/simdag.h
512 - msg/datatypes.h was removed
513 - msg/msg.h -> simgrid/msg.h
516 * Interface improvement:
517 - Rename MSG_host_is_avail(h) to MSG_host_is_on(h)
518 - Sanitize the interface in MSG_task_ module:
519 - Merge two functions that were close enough but misleading:
520 set_compute_duration(t) -> set_flops_amount(t)
521 get_remaining_computation(t) -> get_flops_amount(t)
522 - set_data_size(t) -> set_bytes_amount(t)
523 get_data_size(t) -> get_bytes_amount(t)
524 - Massive cleanups in the functions related to the energy
525 - MSG_host_get_pstate_number() -> MSG_host_get_nb_pstates()
526 - New: MSG_host_get_pstate()
528 - msg/energy/onoff: switching hosts on and off
530 * Interface improvement:
531 - Rename Host.isAvail() to Host.isOn()
532 - Rename Process.currentProcess() to Process.getCurrentProcess()
533 - Rename Task.setDataSize() to Task.setBytesAmount()
534 - Merge Task.getRemainingDuration() and Task.getComputeDuration() into Task.getFlopsAmount()
536 - #18874: Actually allows the GC to reclaim tasks
540 - SIMIX_process_throw: raises an exception in a remote process
541 * Refactoring: Separate sub-modules
542 - libsmx: the public interface, as libc in a real system
543 - popping: the strange dance that converts a user request into a kernel handling
544 - smx_context_*: the virtualization mechanisms that embed the user code
545 - smx_*: the handling of each simcalls
547 - simcall_host_set_power_peak_at -> simcall_host_set_pstate
548 * Rename smx_action_t into smx_synchro_t, making explicit that these
549 things are used to synchronize processes with their environment.
550 For example, a communication is a sort of synchronization involving
551 the communicating processes (that may block until the exchange) and
552 the platform. The same can be said from computations, etc.
554 - #18888: segfault when a process ends before its kill_time
558 - 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.
559 - MPI_Keyval*, MPI_Attr* functions, as well as MPI_Comm_attr*, MPI_Type_attr* variants (C only, no Fortran support yet)
560 - MPI_Type_set_name, MPI_Type_get_name
561 - MPI_*_c2f and MPI_*_f2c functions
562 - MPI_Info_* functions (beware, get_nthkey may not follow the insertion order)
563 - MPI_Pack, MPI_Unpack and MPI_Pack_size functions
564 - Activate a lot of new tests from the mpich 3 testsuite
566 - Constant times can be injected inside MPI_Wtime and MPI_Test through options smpi/wtime and smpi/test
567 - InfiniBand network model added : Based on the works of Jerome Vienne
568 http://mescal.imag.fr/membres/jean-marc.vincent/index.html/PhD/Vienne.pdf
569 - When smpi/display_timing is set, also display global simulation time and application times
570 - Have smpirun, smpicc and friends display the simgrid git hash version on --git-version
571 * Collective communications
572 - 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
573 - 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/).
574 - Support for Rabenseifner Reduce/Allreduce algorithms (https://fs.hlrs.de/projects/par/mpi//myreduce.html)
576 - Replay now uses algorithms from wanted collective selector
577 - Replay can be used with SMP-aware algorithms
578 - Memory occupation of replay should now be contained (temporary buffers allocated in collective algorithms should be shared between processes)
579 - 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.
581 - [#17799] : have mpi_group_range_incl and mpi_group_range_excl better test some corner cases
582 - Correctly use loopback on fat-tree clusters
583 - Asynchronous small messages shouldn't trigger deadlocks anymore
584 * Energy/DVFS cleanup and improvement
585 - smpi_set_host_power_peak_at() -> smpi_set_host_pstate()
586 - new: smpi_get_host_pstate()
589 - "Full" network optimization flag was broken since Surf++
590 - Better handling of precision flags in maxmin
591 - Fix bug causing sometimes "Impossible" errors
592 - Properly pass cluster properties to included hosts
593 * Improvement of the Energy plugin.
594 - Always update the consumption before returning that value
595 - New property: watt_off to denote the dissipation when the host is off
596 - New functions getWattMinAt and getWattMaxAt to retrieve the
597 dissipation of pstates that we are not currently at.
598 * Java: class NetworkLink renamed to Link
599 * New function: simcall_process_get_kill_time()
600 * Massive rename s/workstation/host/
601 - That's intrusive, but that's good for the project consistency. Sorry.
602 - Change config option "workstation/model" into "host/model"
605 - Add a xbt_heap_update function, to avoid costly xbt_heap_remove+xbt_heap_insert use
606 - Add a xbt wrapper for simcall_mutex_trylock (asked in [#17878])
607 - Add two new log appenders : rollfile and splitfile. Patch by Fabien Chaix.
608 - xbt_dirname and xbt_basename for non-POSIX systems
610 * The model checker now runs as a separate process.
611 * The model checker runs must now be launched with the new simgrid-mc program.
612 * Record/Replay: the MC can display a textual representation of a path in the
613 execution graph. It can then be replayed outside of the model checker.
615 -- Mon Oct 12 06:02:41 CEST 2015 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
617 SimGrid (3.11) stable; urgency=low
622 * Normalizing pointers addresses tool for better diff between logs
625 * Add cloud examples using new VMs
626 - examples/msg/cloud/two_tasks_vm.tesh
627 - examples/msg/cloud/simple_vm.tesh
628 - examples/java/cloud/cloud.tesh
629 - examples/java/cloud/migration/migration.tesh
630 * Add java surf examples:
631 - examples/java/surfPlugin/surf_plugin.tesh
632 - examples/java/reservationSurfPlugin/reservation_surf_plugin.tes
633 - examples/java/surfCpuModel/surf_cpu_model.tesh
634 * Add SMPI+MSG example:
635 - examples/smpi/smpi_msg_masterslave/
640 - msg task destroy cancel test
641 - msg_host on/off test
642 * Move all tests in testsuite to teshsuite (adding tesh files)
643 * Restructure teshsuites
644 - one folder for each kind of test
645 * Restructure AddTests.cmake
647 - structure the order of tests (with sections)
650 * Add virtual machine
651 - creation of a VM on a PM
652 - migration of a VM from a PM to another PM
654 - MSG_process_join(msg_process_t process, double timeout)
655 - msg_bar_t MSG_barrier_init(unsigned int count)
656 - int MSG_barrier_wait(msg_bar_t barrier)
657 - void MSG_barrier_destroy(msg_bar_t barrier)
658 - msg_as_t MSG_environment_as_get_by_name(const char * name)
659 * New option "msg/debug_multiple_use" to help debugging when a task is used
662 - Improvements and finalization of MSG_storage, MSG_file APIs and their
664 - Increase code coverage in test suites
668 * Protect context stacks against stack overflow. The number of protected memory
669 pages allocated on the top of each stack (1 by default) can be configured
670 with the new command line option --cfg=contexts/guard_size:<value>.
671 * Simcalls are now generated by a python script that
672 - generates files included by SimGrid
673 - checks that all the functions exist, and proposes prototypes
675 - remove sem_destroy, file_set_data, comm_destroy, vm_set_state,
676 host_set_data, host_get_data
678 - simcall_process_join(smx_process_t process, double timeout)
679 * Fix bug where sleeping processing could not be suspended.
682 * Translate surf models from C to C++
683 - Generic classes for all models: Model, Resource, Action
684 - A generic interface for each kind of model (CPU, Network, Storage
685 Workstation, WorkstationVM)
687 * Translate surf routings from C to C++
688 * Add callbacks using sigc++ or boost::signals2
689 - Add callback functions for resource creation/destruction
690 - Add callback functions for action state change
691 - Handle Energy as a plugin
692 * Replace swag by boost::intrusive
693 * Add new routing models for clusters. For documentation, see
694 http://simgrid.gforge.inria.fr/simgrid/latest/doc/platform.html#pf_cluster
695 - tori, with topology="TORUS" and topo_parameters="ndim1,ndim2,...,ndimn"
696 parameters for cluster tag
697 - Fat trees, with topology="FAT_TREE" and
698 topo_parameters="h;m1,...,mh;w1,...,wh;p1,...,ph" parameters for cluster tag
699 - see examples/platforms/torus_cluster.xml and
700 examples/platforms/fat_tree_cluster.xml
704 * Hostfiles support host:nb_processes construct to deploy several processes on
706 * Collective communication algorithms should not crash if used with
707 improper number of nodes and report the error.
708 * SMPI now partially supports MPI_Topologies : MPI_Cart_create, MPI_Cart_shift,
709 MPI_Cart_rank, MPI_Cart_get, MPI_Cart_coords, MPI_Cartdim_get,
710 MPI_Dims_create, MPI_Cart_sub are supported.
711 * New interface to use SMPI programmatically (still depends on MSG for
712 some parts, see examples/smpi/smpi_msg_masterslave) :
713 - SMPI_app_instance_register(const char *name, xbt_main_func_t code,
717 * Global variables privatization in MPI executables is now performed at runtime
718 with the option smpi/privatize_global_variables (default:no).
719 Limitations : Linux/BSD only, with mmap enabled. Global variables inside
720 dynamic libraries loaded by the application are not privatized (static
721 linking with these libraries is advised in this case)
724 * Options defined in XML work correctly now.
727 * New cmake option, enable_lib_in_jar, to control whether native libraries are
728 copied into simgrid.jar or not (ON by default). Use this option if you want
729 to reduce the size of the installed simgrid.jar, *and* the native libraries
730 are kept installed elsewhere.
731 * Surf binding with SWIG (code generated in maintainer mode only):
732 - plugin to handle callbacks
733 - CPU model only for the moment
736 * Supernovae build mode is definitively removed. It was used to improve
737 inlining and inter-module optimizations. It is nowadays superseded by
738 link-time optimizations commonly available in compilers.
739 * Update ns-3 find lib. Bindings for ns-3 should work again now.
740 * Add boost dependency for surf++
741 * Add new macro for tests
742 - ADD_TESH(name <tesh_args>)
743 - ADD_TESH_FACTORIES(name "thread;ucontext;raw" <tesh_args>)
747 - xbt_bar_t XBT_barrier_init(unsigned int count)
748 - int XBT_barrier_wait(xbt_bar_t barrier)
749 - void XBT_barrier_destroy(xbt_bar_t barrier)
750 * Make the xbt_os_time module public
752 -- Sat May 31 22:39:38 CEST 2014 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
754 SimGrid (3.10) stable; urgency=low
756 The Clean Diaper Release, a.k.a. SimGrid is leak-free.
759 * Reintegrate Java to the main archive as desynchronizing these
760 package is not acceptable anymore (Java is now considered stable)
761 * Add explicit synchronization facilities through semaphores
762 * Bug fix: Task.setDataSize() only changed the C world, not the value
763 cached in the Java world
766 * Dramatically change the way files are handled. API and internals changed, but
767 this part of MSG was not considered as production grade either.
768 * Add explicit synchronization facilities through semaphores
769 * Add a new function MSG_host_get_process_list()
770 * Preliminary DVFS support (see examples/msg/energy/ for details)
773 * SMPI is now included directly in the libsimgrid as the windows
774 linker doesn't force us on splitting it anymore.
775 * Improvements of the SMPI replay tool:
776 - Most of the collective communications are now rooted in the same process as
777 in the original application.
778 - Traces now rely on the same MPI data type as the application (MPI_BYTE was
779 used until now). Multiple data types can now be used in a trace.
780 - The replay tool now supports traces produce either by TAU or a modified
782 - Bug Fix: the compute part of the reduce action is now taken into account.
783 - Gatherv collective is now supported
784 - SimGrid (SMPI for now) can generate replay traces as well. Option -trace-ti
785 of smpirun outputs time independent traces for the current run. One file
786 is created per process. If too many processes are simulated, this behavior
787 can be changed to one file for all processes by using the
788 tracing/smpi/format/ti_one_file flag
789 * smpirun generates the host file if needed (with given host count and platform)
790 * Integration of more than 100 STAR-MPI, MPICH, OpenMPI collective algorithms
791 - allows to select one in particular with --cfg=smpi/coll_name:algorithm
792 - allows to use the decision logic of OpenMPI(1.7) or MPICH(3.0.4) by setting
793 --cfg=smpi/coll_selector:(mpich/ompi)
794 * Support for new functions : MPI_Issend, MPI_Ssend, Commutative operations in
796 * Add a --cfg:tracing/smpi/internals option, to trace internal communications
797 happening inside a collective SMPI call.
798 * Fix the behavior of complex data types handling.
799 * Make MPI_Wtime another synchronization point to take computations into
801 * Replace MPICH-1 test suite by the one from MPICH 3.0.4. Can be built using
802 enable_smpi_MPICH3_testsuite flag in cmake. Run with ctest.
803 * Add all missing Fortran bindings, SMPI should work with Fortran 90
804 (no privatization of global variables yet)
805 * Preliminary DVFS support (see examples/smpi/energy/ for details)
808 * Verification of liveness properties is now available for SMPI applications
809 (in addition to MSG applications)
810 * Bugged examples using SMPI in examples/smpi/mc/
811 * Add --cfg=model-check/visited option. Allows the verification of infinite
812 programs. Detection of loops in the execution thanks to the system state
813 comparison and reduction of the state space to explore. Can be combined with
814 DPOR for safety properties.
817 * Allow to change SimGrid configuration (see --help) within the code
818 thanks to SD_config() as it can be done in MSG.
819 * Add a new function SD_task_set_amount() upon user request.
822 * Handle units for values (10ms, 10kiloflops, 10Bps, 1GB, ...)
823 * Remove rule based routing (no more PCRE dependency)
824 * Add a limiter_link option to cluster tag, to specify a maximum reachable
825 bandwidth in fullduplex mode when it is less than twice the nominal bandwidth.
826 * Add a loopback_bw and loopback_lat options to cluster tag.
827 * Fix the peer tag that could not be mixed with other AS within a Vivaldi
828 routing. Now peers are encapsulated in an AS and have their own private
829 router but this is transparent.
832 * Our own implementation of getline is renamed xbt_getline, and gets
833 used even if the OS provide a getline(). This should reduce the
834 configuration complexity by using the same code on all platforms.
835 * New type: xbt_cfg_elm_boolean.
836 * Allow to use yes/no for boolean configuration options in the command line.
837 * Allow to disable SimGrid cleanups at exit from command line option.
838 There are situations where one may want a simulation to end with an exit.
839 Unfortunately, calling exit may cause SimGrid to segfault, which is quite
840 annoying when scripting around the simulator. Adding a
841 --cfg=clean_atexit:no allows to circumvent this issue.
844 * Lots of memory leaks were corrected in this release.
845 There is no known memory leaks anymore, in all of our 600+ tests.
846 * New command line option --version, to get SimGrid version information.
847 Packagers may want to add extra words to SIMGRID_VERSION_EXTRA defined in
849 * Supernovae builds are deprecated, and expected to be removed in the next
852 -- Sun Nov 17 00:26:44 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
854 SimGrid (3.9) stable; urgency=low
856 The Grasgory release: GRAS is really dead now.
858 * Complete overhaul of the internal host structures scheme.
861 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
862 was considered as experimental and badly maintained since then.
863 * Keeping it was thus a trap to our potential users, that could take
864 it instead of MSG or SMPI by mistake despite is pity state.
865 * GRAS seems to have very few users (if any), and no one volunteered
866 to maintain it further. It also induces a lot of XBT code (for
867 portability sake), that must be maintained too.
868 * For all these reasons, we killed GRAS. If someone wants to revive it
869 in the future, don't cry, our git history still remembers of GRAS.
872 * Major overhaul. Merge our documentation again as time proved that
873 splitting it was really not helping our users.
874 * Further improve the developer documentation to help newcomers
875 hacking on SimGrid itself. The user documentation (and in
876 particular, the beginner documentation) is still in a sorry state.
879 * Now works on Windows too!
880 * Much more extensive test suite, from MPICH
883 * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
884 (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
885 dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
886 * Bug fix: let task be scheduled when the last dependency to be solved is
887 a control dependency.
888 * Remove SD_load_environment_script function.
889 Use the C sg_platf function if you want to declare a platform
893 * New function: MSG_process_get_number()
894 * Old function documented: MSG_config()
895 * Remove MSG_load_platform_script function
896 Use the C sg_platf function if you want to declare a platform
900 * Change the default value of the TCP_gamma constant (maximal size of TCP
901 congestion window) to a more realistic 4MiB value. If you notice changes in
902 your simulation results, you can fall back to the previous 20k tiny window
903 by adding --cfg=network/TCP_gamma:20000 on command line.
904 * (Hopefully) fix a bug wrt periodic availability and state traces
905 * Bug fix: use default values at start when first event in availability/state
906 trace is not at time 0.
909 * remove the "new_" part of function name sg_platf_new_trace_connect
910 (resulting in sg_platf_trace_connect), since it does not create
914 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
915 use case where it's really mandatory, and maintaining it was a pain in
917 * New: xbt_fifo_search(), search an item with a user-provided
918 comparison function instead of dumb pointer comparison.
921 * Fix the lua deployment:
922 Use `simgrid.init_application()` before deployment instead of
923 `simgrid.msg_register_application()` after.
926 * Transfer the tracing files into the corresponding modules.
928 -- Tue Feb 5 11:31:43 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
930 SimGrid (3.8.1) stable; urgency=low
932 The "we are told that some people want to also *install* the simgrid
935 * Add missing file "tesh.1" to the archive.
937 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
939 SimGrid (3.8) stable; urgency=low
941 The Psssshiiiit release: SimGrid jumps into the Cloud.
944 * Add an experimental interface to manipulate VMs. They are mainly
945 process groups with very few intrinsic semantic, but they should
946 allow you to build the semantic you want easily.
947 * New function: MSG_host_set_property_value()
948 * New function: MSG_process_on_exit(). To clean memory in all cases.
949 * Bug fixes that made the host (and link) failures unusable.
950 * Add a way to auto-restart process when the host in which they are
951 executing comes back (ON_FAILURE="RESTART" on deployment file,
952 MSG_process_auto_restart_set).
953 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
954 please stop using the old ones, they are DEPRECATED.
956 * Deprecate functions MSG_global_init() / MSG_global_init_args()
957 Please use MSG_init() instead. (reducing the amount of entry
958 points in the library helps us).
959 * Make it impossible to link against the wrong version of the lib
960 * Deprecate MSG_clean(). No need to call it anymore.
961 * Function MSG_get_host_number() is not deprecated anymore.
964 * Split the doc into a user guide and a reference guide.
965 * Start a developper guide to help people hacking on SimGrid.
968 * Enable tracing by default. This modules rocks you should use it.
969 * Remove option custom_flags. Now use environment variables CFLAGS
971 * Use default cmake things to detect lua instead of home grown ones.
972 * New option "enable_mallocators" to disable mallocators, for debugging
973 purpose ("on" by default).
976 * Bug fixes around the resource failures: don't let the processes
977 survive the host they are running onto.
978 * Add an interface to auto-restart processes when the host in which they are
979 executing comes back.
980 * Ensures that SIMIX_clean is called automatically. It's not part of
981 the public interface anymore (bindings should be updated).
984 * Bug fix for when SD_Simulate is called with a positive value: be careful
985 when comparing doubles. Sometimes they are different for non significant
987 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
988 parallel task whose initial work is distributed among host according
989 to the Amdahl's law. Such tasks are created with a parameter alpha
990 that corresponds to the non-parallelizable part of the computation.
991 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
992 between two sets of workstations assuming a 1D block distribution (each
993 workstation owns a similar share of data) on both sides.
995 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
996 Data redistribution will be automatically scheduled once parent and child
997 are both scheduled. The filling of computation_amount and
998 communication_amount structures is now done seamlessly thanks to the chosen
1000 * New function SD_workstation_dump to display various information
1001 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
1002 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
1003 bandwidth on the route onto which the task is scheduled and the amount of
1005 To divide the nominal bandwidth by 2, the rate then has to be :
1006 rate = bandwidth/(2*amount)
1007 * Compute tasks that have failed can now be rescheduled and executed again
1008 (from their beginning)
1009 * Increasing source code coverage (src/simdag is now covered at 95.8%
1013 * Re-implement time-independent trace replay using SMPI (at the
1014 smpi_smp_* level) instead of MSG. This should replace
1015 examples/msg/actions/actions.c
1016 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
1017 hindexed and structs)
1018 * Implement the exchange of non-contiguous data.
1019 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
1020 * Correct behavior of smpi/sender_gap and set its default value to 0
1021 * Add option to asynchronously send small messages to allow better
1022 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
1023 specifies the size in bytes under which messages will be asynchronously sent.
1024 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
1025 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
1028 * New C interface to define a platform: XML is now optional.
1029 For more info, please check include/simgrid/platf.h.
1030 * New interface to define random platforms from the C:
1031 For more info, please check include/simgrid/platf_generator.h and
1032 examples/msg/masterslave/masterslave_platfgen.c
1033 * Export a sg_cmdline dynar containing all the arguments we got from
1037 * Two new tracing options for adding comments to trace file so you
1038 can track your experiments (see --help-tracing for details).
1039 * New option to generate a impoverished trace file (--cfg=tracing/basic:1)
1040 * Adding the SimGrid version that generated the trace file as a comment.
1041 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
1042 * Fix to avoid key clashes on Paje links
1043 * Other minor fixes related to the Paje specification
1046 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
1047 and renamed to xbt_str_hash() and xbt_str_hash_ext().
1048 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
1049 * Greatly improve the robustness of mmalloc to user errors (such as
1050 using an area after freeing it, or freeing it twice)
1052 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1054 SimGrid-java (3.8.1) stable; urgency=low
1056 * New module: org.simgrid.trace.Trace (SimGrid trace bindings)
1057 Warning: all methods are visible, but only some of them are
1058 implemented so far. Check the source (src/jtrace.c)
1059 for further information.
1060 * New module: org.simgrid.msg.File (SimGrid File management functions)
1061 * New Module: org.simgrid.msg.VM (SimGrid interface to mimick IAAS clouds)
1062 * Change the meaning of Process.restart: now restart the process from
1063 the begining, like MSG_process_restart in C.
1064 * Add Process.setAutoRestart: handling of process restart when failed
1066 * Add Process.getProperty, Host.getProperty, Host.getProperty: allows
1067 you to retrieve the properties of the processes/hosts
1068 * Deprecate Msg.clean(): you can just forget about it now.
1069 * New function Process.getCount(), that only works when compiling
1070 with the not yet released version 3.9 of the C library.
1072 * New context factory based on Coroutines. It mandates a modified JVM
1073 but then, the simulations run about five times faster, and there is
1074 no limit to the amount of processes (beside of the available memory).
1076 -- 2012-12-04 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1078 SimGrid (3.7.1) stable; urgency=low
1081 * Restore the prototype of MSG_process_create_with_environment() to
1082 the pre-3.7 situation by removing the kill_time argument.
1083 * Add a MSG_process_set_kill_time() function instead.
1086 * Fix weird behaviors when dealing with parallel tasks.
1089 * Simgrid is now built as a dll.
1090 * Simgrid-java now works on Windows.
1091 * Simgrid-Java is now included into Windows package.
1094 * First pre-build package for MacOSX.
1097 * Fix compilation when using MSG_USE_DEPRECATED.
1098 * Fix some compilation issues on Macs and Windows.
1099 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
1100 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
1102 We discovered that the Lua console is broken, but we are missing the
1103 manpower to fix it right now. The problem existed in 3.7 too, so we
1104 are not blocking the release for that. Sorry if you depended on this
1105 feature, any help would be really welcome.
1107 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1110 SimGrid-java (3.7.1) stable; urgency=low
1112 The "Java aint got to be bloated and slow" release
1115 * Various internal cleanups and performance improvement
1116 Simulations are expected to run up to twice faster or so
1117 * Make Process.kill(process) an instance method, not a static one
1118 * User processes are not java.lang.Thread subclasses.
1119 This breaks the compatibility (sorry), but previous API was
1120 brain-dead, making it impossible to have non-trivial
1121 initializations in the process constructor.
1122 * Require a full constructor per Process sub-class.
1123 Kinda breaks the compatibility (sorry), but this allows a much more
1124 efficient way to launch the processes at simulation startup.
1125 * Do not embeed our version of semaphores, java 1.5 can be considered
1126 as sufficiently prevalent for us to not dupplicate its features.
1130 * Add examples for almost every part of the API
1131 We spotted and fixed a lot of bugs in the process
1133 * New module: asynchronous communication API
1134 * New function: Process.sleep()
1135 It takes milliseconds as argument, just as java.lang.Thread.sleep()
1136 * New module: org.simgrid.msg.Mutex (SimGrid mutexes)
1137 * New module: org.simgrid.msg.RngStream (RngStreams random generators)
1139 -- 2012-06-12 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1141 SimGrid (3.7) stable; urgency=low
1143 The "spring cleanups (before the next Big Project kicks in)" release.
1146 * We can specify the SMPI latency/bandwidth factor with command line
1147 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
1148 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
1149 You can also use the "config tag" from platform file by adding this line
1150 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
1151 (see "example/platforms/tag_config.xml" to use "config tag").
1152 Note that the command line supersedes the platform file configuration.
1153 * Change the correction factors used in LMM model, according to
1154 the latest experiments described in INRIA RR-7821.
1155 Accuracy should be improved this way.
1156 * Use the partial invalidation optimization by default for the
1157 network too. Should produce the exact same results, only faster.
1158 * Major cleanup in surf to merge models and split some optimization
1159 mechanisms from the core of the models. As a result you can now
1160 specify which model to use (e.g., --cfg=network/model:LV08
1161 --cfg=cpu/model:Cas01) and which optimization mode to use
1162 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
1163 Incompatible combinations should err at initialization. See
1164 --help-models for the list of all models and optimization modes.
1165 * The CLM03 workstation model was dropped for simplicity because it
1166 used the deprecated CM02 network model. Use default instead.
1167 * Rename the TCP_gamma configuration option to network/TCP_gamma
1168 * Rename the coordinates configuration option to
1169 network/coordinates, and document it
1170 * Use now crosstraffic keyword instead of the terribly misleading
1171 fullduplex keyword. It is activated by default now in the current
1172 default model, use --cfg=network/crosstraffic:0 to turn it off.
1173 * Ongoing refactoring the model parsing to make XML files optional
1174 See include/simgrid/platf.h for details (still to be completed)
1177 * Major overhaul of the documentation. Almost instructive now :/
1178 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
1179 functions and friends. This interface was considered as
1180 deprecated since over 2 years, it's time to inform our users that it is.
1181 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
1182 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
1183 use these (crappy) functions in your code.
1184 These functions will be removed soon. Stop using them now.
1185 * Deprecate MSG_get_host_{table,number}
1186 Implement MSG_hosts_as_dynar() instead.
1187 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
1188 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
1191 * Stabilize the parallel execution mode of user contexts
1192 * Introduce configuration variables to control parallel execution:
1193 - contexts/synchro: Synchronization mode to use when running
1194 contexts in parallel (either futex, posix or busy_wait)
1195 - contexts/parallel_threshold: Minimal number of user contexts
1196 that must be part of a scheduling round to switch to parallel
1197 execution mode (raw contexts only)
1198 * Fix bugs that prevented to use suspend/resume along with
1199 synchronization structures.
1200 * Fix bugs in process termination that lead to invalid memory access
1201 in very specific conditions.
1204 * Introduce a parallel mode for the models (controlled by surf/nthreads
1205 configuration item). In our tests, running the models in parallel
1206 never lead to any speedups because they are so fast that the gain
1207 of computing each model in parallel does not amortizes the
1208 synchronization costs, even when ultra fast futexes are used.
1209 This is released anyway because YMMV.
1212 * Performance boost by using a swag internally to compute the set of
1213 tasks that are finished and should constitute the return value of
1217 * Enable it by default now that it is considered rather stable.
1220 * Documentation of the tracing functions.
1221 * Performance gains when tracing categorized/uncategorized resource
1222 utilization by avoiding calls to get route when updating resource
1223 variables. LMM constraints are being used instead.
1224 * API changed to set task categories. Use MSG_task_set_category instead
1225 of TRACE_msg_set_task_category, and SD_task_set_category instead
1226 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
1227 * Bugfix for graphicator, routes not correctly obtained, memory leaks
1228 * Examples for link user variables added (see at examples/msg/tracing/)
1229 * Deprecated function TRACE_msg_set_process_category completely removed
1230 * Trace header updated according to the latest Paje file format
1231 * Tracing network lazy updates, no longer obligate users to use full updates
1232 * --cfg=tracing/platform:1 also registers power/bandwidth variables
1233 * Experimental: let user code declare/set/push/pop application states for hosts
1234 * API changed to allow the manual creation of graph configuration files
1235 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
1238 * Improve the API of Lua MSG bindings, using the Lua spirit.
1239 * Each simulated process now lives in its own Lua world (globals are
1240 automatically duplicated). It helps writing simulators. Will allow
1241 to run Splay programs within SimGrid in the future.
1242 * Add a Chord example in Lua, equivalent to the MSG one.
1245 * Start the implementation of a solution to express temporal
1246 properties, not only local assertions. This is still an
1247 experimental work in progress, stay clear from it to be safe.
1251 - Add new runtime parameters --help-logs and --help-log-categories
1252 to display information about supported logging parameters and
1254 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
1255 don't exists anymore.
1256 * Mallocators: allow value NULL for the reset function.
1258 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
1259 create homogeneous dictionaries, where all the elements share the
1260 same free function. Non homogeneous dictionaries will be
1261 deprecated in the next release.
1262 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
1263 - Multi-level dictionaries are deprecated.
1265 - new function xbt_dynar_search_or_negative() that is useful when
1266 you have less than 2 million elements in your dynar and don't
1267 want of the extra complexity of catching exceptions when the
1268 element is not found.
1270 - Make xbt_os_thread module (for thread portability) public.
1271 Documentation is still to come, sorry.
1273 - Cleanups and simplifications to make it maintainable again.
1274 - Exotic features (such as memalign and valloc) were removed.
1275 - The metadata were extended and improved so that the
1276 model-checker becomes able to explore and inspect the heaps.
1277 - This may induce a performance drop when enable_model-checking is
1278 ON in cmake (even if it's not used in the simulation), but it is
1279 necessary at this point to get MC working.
1281 Turn model-checking OFF if simulation performance matters to you.
1282 Not enabling it at runtime is not enough, disable it in cmake.
1284 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1287 SimGrid (3.6.2) stable; urgency=low
1289 The "Not coding new stuff allows to polish old things" release.
1292 * New bindings to the NS3 packet level simulator (experimental)
1293 * Use the raw (efficient) execution contexts instead of the sysv
1294 (portable) ones when possible.
1295 * libpcre is now mandatory in any cases since not using it led to
1296 severe performance loss and possibly other issues
1297 * Update the XML platforms:
1298 - G5K: include the latest machine in Nancy
1299 - GridPP and LCG: new platforms
1300 * Documentation was partially updated, at least (more to come)
1302 Bug fixes, cosmetics and small improvements
1303 * Free terminated processes before the end of the simulation to avoid
1304 exhausting the memory of users having very dynamic amount of
1306 * Bug fix and cosmetics about canceling non-running tasks
1307 * Bug fix about the dot loader's issues when using libcgraph
1310 * Create an installer for windows with nsis (amd64 and win32)
1311 - Add an hello world project to illustrate simgrid project creation.
1312 - Embed libpcre into the Simgrid installer to avoid
1313 its compilation burden
1314 * The raw execution contexts should work on Apple now
1315 * Port to Windows 64 bits
1316 - Sysv contexts now have an implementation for this arch
1317 - GRAS communication features now support this arch
1318 * Drop support for borland compiler on windows
1319 - this code was not maintained, and we kinda depend on gcc nowadays
1320 * Fix portability issues on kfreebsd/gnu: build error about semaphores
1321 * Fix portability issue on unstable ubuntu: linker became picky on
1324 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1326 SimGrid (3.6.1) stable; urgency=low
1328 The "Oops, we broke Macs too" release
1331 * Fixed contexts detection so that raw ones are used when possible
1332 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
1333 leads to a strange error, with user code segfaulting sometimes when
1334 the generated code is not perfectly aligned (which is not
1335 controllable from the user side, depends on the amount of code)
1338 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
1340 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1342 SimGrid-java (3.6) unstable; urgency=low
1345 * Split of every thing from simgrid v3.5 into a separate package.
1347 -- 2011-10-05 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1349 SimGrid (3.6) stable; urgency=medium
1351 The Summer Release, also known as the "OMG! They Killed Kenny!" version
1354 * Bindings now constitute their own package, separated from the main one.
1355 Rationale: reduce our maintenance nightmare by reducing the module coupling
1356 They will soon be released on their own on gforge.
1358 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
1359 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
1361 GRAS: It is not considered as stable anymore, but experimental. Sorry.
1362 * It's not quite deprecated for now because we have no replacement,
1363 but it may soon become the case.
1366 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
1367 * Fortran: New user-level cache variable to store the rank of the running
1368 process. This improves performance by an order of magnitude.
1369 * C: New coccinelle script to automatically locate and modify global and
1370 local static variables.
1371 * Improved SMPI network model with a sender-side gap to account for multiple
1375 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
1376 only say if a communication is finished, no matter whether it succeeded or
1377 failed. You can call MSG_comm_get_status() to know the status of a finished
1379 * New function MSG_task_dsend() to send a task and detach it. When a
1380 communication is detached, you are never notified of its success or failure
1381 and the memory is released automatically once it is finished. This function
1382 is useful when you don't care about the end nor the success of a
1384 * Change the prototypes of action replay. Sorry for inconvenience,
1385 but this is really more efficient this way (and to adapt your code,
1386 you just have to fix the initialization, that shouldn't be too long)
1387 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
1388 ever managed to do anything useful with it.
1389 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
1390 takes a dynar of communications. It returns immediately and gives the
1391 index of a finished communication (if any).
1392 * New example: a basic implementation of the Chord P2P algorithm.
1395 * New model for multi-core CPUs. You can now use the core attribute to
1396 precise the number of cores of a host. This is a basic model. Every
1397 process running on the host receives at most the power provided in
1398 the DTD (throughput<=power). Total throughput of process cannot exceed
1400 * New peer tag. This peer tag creates a tiny AS comprising a host and a
1401 router linked by an up-link and a down-link (possibly asymmetrical).
1402 This kind of pattern allows to easily build last-mile model style platforms.
1403 Aggregating such patterns in a rule-based AS is thus the technique of
1404 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
1405 * New model for Vivaldi routing. We transformed the Vivaldi network model
1406 into a Vivaldi routing model (based on the rule-based model). This allows to
1407 combine Vivaldi based latencies with last-mile platforms.
1410 * Added a check for NaN of IEEE754 infinite in the double entries of
1412 * Introduce a new context factory "raw", highly inspirated from the
1413 ucontext factory, but using manually crafted functions in assembly to
1414 do the work in an efficient manner.
1415 * Allow to change the used context factory at run time, not only at
1416 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
1417 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
1418 contexts at runtime (only with raw contexts or ucontexts).
1419 * Completely rewrote this module to allow parallel execution of user
1420 processes. Use --cfg=contexts/nthreads:N to execute user processes
1421 with N parallel threads (the default is 1, meaning no parallelism).
1422 * Allow to decide dynamically between sequential and parallel modes.
1423 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
1424 processes in parallel only when their number is greater than or equal to P
1426 * Added a check for NaN of IEEE754 infinite in the double entries of
1430 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
1431 won't output the state of processes when interrupted with Ctrl-C
1432 * Add a new function xbt_dynar_to_array that transforms a dynar into a
1433 NULL-terminated array. This may solve backward compatibility issues
1434 due to the change to return type of SD_simulate. See also:
1435 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
1436 * Add new macros with variable number of arguments.
1437 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
1438 - in xbt/asserts.h: xbt_assert
1439 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
1440 - in xbt/ex.h: THROWF and RETHROWF.
1441 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
1443 * Change xbt_die() to accept a format string with arguments, just like printf.
1444 * New data structure: xbt_lib_t, like a dict but more general and with better
1448 * New configuration options
1449 Options triva/categorized and triva/uncategorized can be used to generate
1450 graph configuration files for Triva visualization tool.
1451 * Configuration option tracing/platform is renamed to tracing/categorized
1452 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
1453 * New TRACE_user_link_variable interface:
1454 User provides the name of the link and the tracing variable to attach to it
1455 * the declaration of tracing categories must be done after the environment
1457 * simpler tracing interface, just one way to declare categories
1458 TRACE_category or TRACE_category_with_color, it is up to you
1459 * links in the trace file are again identified by their names
1460 * trace contains the full platform hierarchy exactly as declared using the ASes
1461 * Options tracing/msg/[task|process]:1 groups the process by hosts
1462 for both cases, tasks and processes must have names that are unique during the simulation
1463 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
1464 * The experimental option tracing/msg/volume is deprecated
1465 its functionality may be reincorporated if needed
1467 The tracing generates a trace file with unordered timestamped events,
1468 because of the way the core simulator (surf) works. A script available
1469 at the tools directory (fix-paje-trace.sh) can be used to put the events
1470 in order. We have changed the tracing so it can generate ordered timestamped
1471 events in the final trace, but depending on the simulator (and how much time
1472 is simulated) that can lead to a huge memory utilization. It is deactivated
1473 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
1475 Build Infrastructure
1476 * Define a SIMGRID_VERSION macro in simgrid_config.h.
1477 - We are trying hard to keep the API stable, but it may happen that
1478 some things change (we're a research project after all, not a
1479 nuclear plant operating system). If such things should happen, you
1480 could rely on that macro to adapt.
1481 - current value: 30600 for 3.06.00, aka 3.6
1482 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
1483 a number that can be compared with SIMGRID_VERSION.
1484 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
1485 assertions and verbose/debug logging events are disabled at compile time.
1487 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1489 SimGrid (3.5) stable; urgency=medium
1492 * New feature to any SimGrid-based simulator: Model-Checking
1493 Check SIN#1 for more details.
1496 * New Model SMPI (three-interval linear regression for correction factors)
1497 See RR-7426, available at http://hal.inria.fr/inria-00527150
1498 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
1499 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
1500 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
1501 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
1502 * See also src/smpi/README
1507 - Tracing API changes: TRACE_start and TRACE_end should not be called
1508 by user-code. They are automatically called by simulators created
1509 with SimDAG, MSG and SMPI if the toolkit is compiled with
1510 tracing_enabled=ON. Categories declaration and utilization remain the
1511 same for MSG and SimDag.
1512 - A function was added to the tracing API to declare categories with
1514 - TRACE_category_with_color (char *category, char *color)
1515 where color must be in the following format
1516 "%f %f %f", red, green, blue
1517 and red, green, blue are float values in the interval [0, 1]
1518 - User can specify NULL as color parameter, or continue calling
1519 TRACE_category (cat)
1520 On that case, the tracing system will define random colors
1521 - The following command-line options are supported:
1522 --cfg=tracing/filename:msg.trace
1523 --cfg=tracing:1 (activate tracing, needed to use others)
1524 --cfg=tracing/platform:1 (categorized resource use)
1525 --cfg=tracing/uncategorized:1 (uncategorized resource use)
1526 --cfg=tracing/msg/task:1 (task creation)
1527 --cfg=tracing/msg/process:1 (process creation, migration)
1528 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
1529 --cfg=tracing/smpi:1 (SMPI interface tracing)
1530 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
1531 - examples of examples/msg/tracing updated
1533 - DAXLoader and DOTLoader functions can generate tasks with categories
1534 - A new function to attribute a category to SD tasks:
1535 TRACE_sd_set_task_category (SD_task_t task, char *category)
1536 * Tracing the MPI interface implemented by SMPI
1537 - Collective operations are traced with states
1538 - Point-to-Point operations are traced with states/links
1539 - Tracing activated by a parameter "-trace filename" passed
1540 to smpirun during execution (considering that simgrid
1541 is compiled with tracing enabled)
1542 - To run the simulation with gdb, the simulator
1543 accepts --cfg=tracing/smpi:1 to trace SMPI
1544 - tesh files to check if smpi tracing is ok
1545 - See examples/smpi/NAS/DT-trace
1546 * GTNetS tracing re-worked
1547 - adaptation to the tracing system of GTNets to cope
1548 with modifications regarding the fullduplex mode
1549 - new tesh files to check if gtnets tracing is ok
1552 * Asynchronous communications through the functions:
1553 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
1554 * New function: MSG_load_platform_script()
1555 to make possible using a lua script instead of XML files to set up platforms
1556 * New function: MSG_set_function
1557 to associate functions to processes, used when bypassing the parser
1558 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
1560 Platforms: Add some more examples in examples/platforms
1561 * Grid'5000: see www.grid5000.fr
1562 * *_30000_hosts.xml: various huge files [mainly scalability testing]
1565 * Change the XML format. This is a very important modification. SimGrid
1566 3.5 introduces a new hierarchical format based on the notion of
1567 Autonomous Systems. Compatibility with old format is ensured
1568 through the perl script provided in the install bin directory
1569 bin/simgrid_update_xml.
1570 It is now possible to build platforms with specific routing
1571 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
1572 connect several platforms together. We will try to provide soon
1573 set of realistic platforms exploiting these properties (have a
1574 look at examples/platforms/ for the moment).
1575 * Take the opportunity of the XML format change to be a good XML citizen:
1576 rename link:ctn to link_ctn and similar changes (also dealt with by
1578 * Add a new routing scheme (rule-based) using regular expressions. It
1579 enables to have an extremely low memory footprint when the
1580 underlying routing is simple and can be compactly described. You
1581 need to have libpcre4-dev (perl regular expressions) installed if
1582 you want to use this routing scheme.
1583 * Revive the cluster TAG and allow to easily and efficiently (both in
1584 term of memory and speed) connect clusters together. Have a look
1585 at teshsuite/simdag/platforms/ to see how this can be done. With
1586 this tag, you can create clusters with thousands of tasks at no
1587 cost (have a look at examples/platforms/).
1588 Note: clusters are implemented as ASes, so there is no need for an
1589 enclosing AS tag if you have only one cluster in your platform.
1590 * Add new generic functions in the public interface that allows the user
1591 to call SURF 'create_resource' methods from your code (same
1592 functionality as the XML bypass mechanism but with a much lighter
1594 * Add a new model (enabled through command line --cfg=network/model:SMPI)
1595 that uses a piecewise linear approximation to produce better
1596 results when exchanging small messages.
1597 * Add a new parameter to handle correctly full duplex link and account
1598 for interferences between uplink and downlink communications
1599 (activate with --cfg=fullduplex:1).
1602 * Rename the SD_READY (all dependencies are satisfied and task is
1603 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
1604 dependencies are satisfied) state.
1605 This prevents a confusion between the notion of "ready to schedule"
1606 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
1607 simulated" (SD_RUNNABLE) used by the simulation kernel.
1608 * Change the way a task is considered as ready. Instead of removing
1609 dependencies when a task is done, a counter is decreased. This way,
1610 it is always possible to reach ancestors thanks to the
1611 SD_taks_get_parents function (even after the end of the simulation.)
1612 * Change the return type of SD_Simulate from (SD_task_t*) into
1613 xbt_dynar_t. This function was in handling a dynar internally and
1614 converted it into a NULL terminated array for historical reasons.
1615 * New function SD_dotload(char*) to load a DAG described in dot
1616 format. This loader and the corresponding examples require the
1617 installation of the graphviz library.
1618 * Fix a bug in the management of tasks of size 0 in the surf network
1619 models. This problem was only visible with SIMDAG and you should
1620 thus disregard results produced with earlier versions if you
1621 relied on this feature (some tasks were blocked because of this).
1622 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
1623 even though your applications were doing only point-to-point
1624 communications and sequential computations. Now you can really use any
1625 model you want (of course, if you create real parallel tasks, which are
1626 not implemented in most models beside ptaskL07, this will abort).
1627 * Add an example that schedules a DAX on an heterogeneous platform
1628 using a Min-Min strategy.
1629 * New function SD_workstation_get_current_task() that returns the kind
1630 of task currently running on a workstation in the sequential access
1632 * Raise some warnings when unexecuted tasks remains at the end of the
1633 simulation. This is usually caused by cycles in the DAG.
1636 * New function: SIMIX_process_set_function() called by MSG_set_function
1637 * Change the underlying waiting queue in semaphores so that a process
1638 can wait on several of them simultaneously (as in waitany).
1639 * Fix the way to handle tokens in semaphores so that all access patterns
1640 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
1641 * kill the dirty pimple SIMIX_message_sizes_output()
1642 Please use (proper) visualization instead
1645 * New data container: setset (set of sets of elements)
1646 * New module: mmalloc (mapped malloc, allowing to have several
1647 independent segments of malloc)
1648 * New function: xbt_dict_cursor_set_data()
1649 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
1650 * New function: xbt_dynar_is_empty()
1651 * New function: xbt_fifo_get_last_item()
1652 * Fix xbt_dynar_shrink(): use the right element size.
1653 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
1654 uninitialized areas during expand.
1655 * Fix semaphores: previous implementation was severely broken.
1656 * Use library init/fini functions for our initialization.
1657 - you can use logs and other feature as soon as you want in your
1658 code (even before the xbt_init / MSG_init)
1659 - xbt_exit is now a no-op and produce a warning when used.
1662 * Port GRAS to new SIMIX mechanisms. This allows gras users to
1663 benefit from the latest improvement to the simulation kernel.
1664 * Kill measurement sockets for now. If you rely on them, sorry. This
1665 release is not for you. This feature will be reintroduced in the
1666 future, but we cannot delay the release any further.
1667 * New function: gras_msgtype_get_name().
1668 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
1669 * Fix (at last) the pmm example: it should not randomly fail anymore.
1671 Build chain: bug fixes and overall polishing
1672 * Cmake is now stable enough. Hence, we killed the autotools.
1673 * Port to windows ( TM :)
1674 * Fix the 'make install' target.
1675 No need to use 'make install-simgrid' anymore
1676 * Introduce a 'make dist' target compiling a *source* archive
1677 'make package' compiles a binary archive
1678 * Compile java files only on need
1679 * Add --cd and --setenv command line options to tesh
1680 * Out of source builds are not fully supported yet, but we are close
1681 * Enable supernovae and optimization flags by default for our users
1684 * Add layer to set up environment directly from lua, without XML.
1685 * The effect of gras_stub_generator can be achieved through
1686 lua too (check examples/gras/console/ping_generator.lua)
1688 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1690 SimGrid (3.4.1) stable; urgency=low
1692 The "Polishing easter eggs is probably a good idea" release.
1693 This is a bug fixes release only.
1697 * Fix a bug preventing the tasks from begin garbage collected.
1700 * Fix a bug occuring when a host involved in a communication fails.
1701 This was not detected properly by the other peer involved in the
1702 communication. Now, it's reported as a network error.
1705 * Warn the user about loop dependencies in data flow of DAX files
1706 * Obey the control-flow dependencies of DAX files
1709 * Add option "enable_smpi" allowing to not compile SMPI.
1710 Probably useful for the (Mac) users experiencing a build error here
1711 * Improve the detection of lua5.1 and ruby1.8
1713 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
1715 SimGrid (3.4) stable; urgency=low
1717 The "Easter in Cargese" release. Also known as (major changes):
1719 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
1720 ~> bindings were greatly improved
1721 ~> new tracing infrastructure for better visualization introduced
1723 * the "Welcome to configury modernity" release.
1724 ~> we switched from autotools to cmake, and improved our cdash
1727 A more detailled list of changes follow (full detail in svn log).
1729 Java Bindings: Various Cleanups
1730 * (install java-gcj-compat-dev on debian-like to use them)
1731 * Remove put/get: no need to export deprecated interface in Java
1732 Use send/receive instead.
1733 * Cleanup the examples and add a README per directory
1734 * Remove example autoDestination (that's the only way to go now)
1735 * Remove example explicitDestination (was a plain copy of basic)
1736 * Make JniException a runtime exception, so that there is no need to
1737 declare the fact that you may encounter such a beast. I guess that
1738 nobody will ever want to survive such error.
1739 * Create specific errors for each MSG case of failure:
1740 host failure, transfer failure, timeout, task cancelled
1741 * Cleanup the exceptions that may get thrown by each function
1742 * Other internal cleanups in Java bindings. Performance still bad :/
1743 Ruby and Lua Bindings: create them
1744 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
1745 * That's new and great, you should try them out.
1746 Same functionalities than Java bindings, only even less polished
1748 * Kill the useless "rate" argument of SD_task_get_execution_time()
1749 Everyone used to provide -1 as a value, it was not used, and the
1750 semantic of a possible use wasn't even clear.
1751 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
1752 either as comm costs or compute costs to mean that there is no
1753 such thing for that specific task.
1754 * Add a SD_task_set_name() function
1755 * Fix SD_task_unschedule() on typed tasks
1756 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
1757 * In DAX loader, accept useless 'level' attributes to <job> since
1758 LIGO DAGs have them (seem to be to ease graphical representation).
1760 * Add an example masterslave_mailbox.c using send/receive and not
1761 the deprecated put/get interface.
1762 * Kill the MSG_paje_output() function. It's a noop since 2 years.
1763 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
1765 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
1766 (declare MSG_USE_DEPRECATED to still have the old name)
1767 * Add a MSG_task_set_data() function
1768 * About trace replay (see examples/msg/actions):
1770 - Allow to work with splitted trace files for each process
1771 Give the specific trace file as argument of each process,
1772 and call MSG_action_trace_run(NULL)
1773 You can still have one merged file for all processes.
1774 - Fix implementation of collective operations
1775 * Allow task_execute() on 0-sized tasks (closes #10063)
1777 * This is the first release of SimGrid where SMPI is not considered
1778 beta anymore (even if some corners should still be improved)
1779 * Port over the new SIMIX_network submodule (internal refactoring)
1780 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
1781 * Implement more missing elements of the standard:
1783 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
1785 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
1786 MPI_Scan() MPI_Get_processor_name()
1787 - Added implementation of missing case for Alltoall (warning: it's
1788 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
1789 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
1790 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
1791 SMPI_MPI_Allgatherv()
1792 * Bug fixes include:
1793 - MPI_Waitsome() was broken
1794 - Allow relative includes in smpicc
1795 - Command line cfg argument 'reference_speed' was ignored...
1796 - Some functions did not properly lead to auto-benching of user code
1797 - smpicc passes -O2 by default (just like openmpi one)
1799 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
1800 * Bug fixes about timeouts during communications
1801 * add SIMIX_message_sizes_output() as a pimple to write to file the
1802 amount of messages per size. Use gnuplot to get histogram.
1803 Pimple because that's the only user-visible function of simix,
1804 defined directly in xbt.h (irk, sorry)
1806 - Add a SIMIX_sem_get_capacity() function
1807 - Fix interactions with processe resume/suspende
1808 - release_forever() was stupidly broken
1809 - Fix SIMIX_display_process_status() for processes in a semaphore
1810 - Make SIMIX_sem_block_onto() user-visible
1811 * Refactoring context stuff:
1812 - Use pseudo-OOP for better modularity
1813 - reimplement SIMIX_process_kill() without process_schedule() so
1814 that the latter can take as invariant that it is called from
1816 - Merge context_start into context_new for sake of simplicity
1818 * Add a Vivaldi network model, coded live during SUD'10 ;)
1819 * Rename configuration variables to start a hierarchy:
1820 o cpu_model -> cpu/model
1821 o network_model -> network/model
1822 o workstation_model -> workstation/model
1823 * New configuration variables:
1824 o network/bandwidth_factor: correction to bandwith
1825 o network/latency_factor: correction to latency
1826 o netwotk/weight_S: correction to the weight of competing streams
1827 * Add a long description to the models, that users can see with such
1828 argument on the command line: --cfg=cpu/model:help
1829 * --help-models display the long description of all known models
1831 * config: add the ability to set a default value after registration
1832 Does not override any previously set value (e.g. from cmd line)
1833 * dict: allow to have integer key and data.
1834 When so, you need to use the following functions
1835 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
1836 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
1837 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
1838 In contrary to regular dicts, the key is not malloced before copy.
1839 Mixing scalar and regular elements in the same dict is not tested
1841 * Allow to use xbt_dynar_shrink() to expend the dynar instead
1842 Tracing for Visualization:
1843 * SimGrid is now instrumented in order to generate a trace file for
1844 visualization analysis: to use it, need to compile SimGrid with the
1845 "tracing" option enabled, and instrument the program using SimGrid with
1846 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
1847 (among other functions).
1848 * The instrumentation only traces the platform utilization for now
1849 * Documentation to use the tracing functions and how to analyze the
1850 traces with the Triva tool is written.
1851 * More information about: SimGrid FAQ (in the section Tracing Simulations
1854 * We moved to cmake as default build system. Autotools support will
1855 be dropped soon. Check the FAQ for more info about how to use it.
1856 * Greatly improved our cdash/ctest interactions
1857 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
1858 * Added memory checking tests with valgrind; lot of memleak fixing.
1859 This may be the first release of simgrid with so few memory issues
1860 * Added code coverage tests.
1861 Our coverage is still improvable, but at least we see it on cdash.
1863 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
1865 SimGrid (3.3.4) stable; urgency=low
1867 The "Desktop Grid needs love too" release (also called Xmas release).
1869 Models improvements:
1870 * Major speedup in the maxmin system solving by using lazy evaluation
1871 Instead of solving completely the maxmin system at each iteration,
1872 only invalidate (and recompute) the modified parts.
1873 This new feature is enabled in default models but you can try to
1874 turn it on with "--cfg:maxmin-selective-update=1" for other models.
1875 * Cas01 IMproved as default CPU model
1876 This CPU model is the same Cas01 model, but it uses the
1877 maxmin-selective-update flag and a heap structure to manage
1878 actions on SURF kernel.
1879 It reduces the complexity to find the next action to finish and,
1880 consequently, it's faster than the old Cas01.
1881 This is the new default CPU model (Cas01).
1882 * Rename the old Cas01 model to Cas01_fullupdate
1883 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
1884 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
1885 * CpuTI (CPU Trace Integration)
1886 A new CPU model whose objective is simulate faster when using
1887 availability trace files.
1888 Instead of using a full featured, over engineered maxmin system for
1889 CPU modeling, this model does the pre-integration of traces files
1890 to calculate the amount of CPU power available, and so, executes
1891 faster than the old CPU models.
1892 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
1893 * Use LV08 as default network model since it gives better accuracy
1894 for small messages and shouldn't change things for big ones.
1895 Use --cfg=network_model:CM02 to get the previous behavior.
1898 ******************************************
1899 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
1900 ******************************************
1901 * The new CPU model may changes simulations!
1902 The point is that events occurring at the exact same timestamp
1903 are not scheduled in the same order with the old and new
1904 version. This may be enough to completely change the execution
1905 of simulations in some cases.
1906 * The new network model will change simulations!
1907 This new model is more realistic than the previous one, so you
1908 should consider redoing your old experiments with this model.
1909 Sorry for the inconvenience.
1912 * Introduce the supernovae compilation mode
1913 When compiled that way, the whole SimGrid (or almost) is put in a
1914 single compilation unit and compiled in one shoot.
1915 This is to help gcc which has difficulties to inline stuff from one
1917 The speedup seem to be above 15%, althrough more tests are needed on
1918 amd64 to confirm that gain.
1921 * Port of MSG's mailbox on top of SIMIX network
1922 The put/get mechanism was greatly simplified on the way.
1925 * New SIMIX network module. Provides:
1926 - Mailbox: rendez-vous mechanism to find with who you want to speak
1927 - Synchronous send/recv: easier and hopefully faster since the
1928 logic is handled in the maestro process directly now
1929 - Asynchronous send/recv: you dreamt of it? It's here now
1930 Too bad that nobody cared enough to propagate the change to MSG.
1931 * Add semaphores as SIMIX synchronization mechanism.
1934 * new function SD_daxload(char*) to load a DAX file
1935 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
1936 * Introduce typed tasks. Specify its kind and cost at creation.
1937 At scheduling, just give where it should be placed, and the cost
1938 for each involved resource is automatically computed.
1939 Existing constructors so far (more to come of course):
1940 - SD_task_create_comm_e2e() for end-to-end communication
1941 - SD_task_create_comp_seq() for sequential computation
1942 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
1943 * new function SD_task_dump() for debuging display
1944 * new function SD_task_dotty(task,FILE*) writing to file the info
1945 about the task in dotty format
1946 * SD_task_dependency_exists() can now cope with having one of its
1947 arguments NULL. If so, it tests whether the other argument has any
1949 * Add getters on list of preceding/following tasks:
1950 SD_task_get_parents(task) and SD_task_get_children(task)
1951 * Add getters on amount of workstations and list:
1952 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
1953 * Add getter on task kind: SD_task_get_kind(task)
1954 * Update the start_time and finish_time of tasks on completion/failure
1955 * Bugfix: Remove task from state swags when destroyed
1958 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
1961 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
1962 dynar with one separate thread per value of the dynar.
1963 * Change the prototype of xbt_thread_create(), sorry.
1964 Added a boolean parameter indicating whether we want to join this
1965 thread (used in SG only for now)
1966 * Implement xbt_thread_join and xbt_thread_yield in SG also.
1969 * GTNetS wrappers should now be usable again (and betterly tested too)
1970 * Fix a major regression from 3.2 where the timeout provided to
1971 MSG_task_put_with_timeout() was used as absolute time before which
1972 the comm should be done.
1973 * Start to fix the <cluster> tag.
1974 - Internal links should be good now (beside of the loopback, which
1975 use the private link instead)
1976 - paths to the external world is still rather broken
1977 - the <route:multi> tag is just broken. Actually that's brain-dead.
1978 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
1979 to make it less stupid
1980 ** Check your platform with teshsuite/simdag/platforms/flatifier **
1981 * Fix a source-level compatibility glitch from 3.2: after defining
1982 MSG_USE_DEPRECATED, you can use the old name
1983 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
1984 * Allow to compile from the SVN with automake 1.11
1985 * Fix some problems when using the "start_time" tag in deployment XMLs.
1986 * Fix #8569: XBT/synchro.h has redundant declarations
1987 * Fix #8563: MSG return values and exceptions
1988 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
1989 * Integrate patch #8636: Obey DESTDIR when installing documentation.
1990 Thanks to Robson Peixoto.
1991 * Fix a vicious bug in dictionaries inducing that some elements were
1992 not freed on xbt_dict_free()
1994 Portability report of this version:
1995 * Main portability targets:
1996 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
1997 on (amd64/i386/ia64)
1998 - mac leopard on i386
1999 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
2000 but nothing critical.
2001 * Other platforms: windows, AIX and others were not tested for this release
2003 Timing report of this version:
2004 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
2005 scenario parameters). From 8h to a few seconds in desktop grid settings.
2006 * Supernovae brings about 25% speedup on i386.
2008 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
2010 SimGrid (3.3.3) stable; urgency=low
2012 The "Need for Speed" release.
2014 The timings done to validate the 3.3.2 were faulty.
2015 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
2017 The problem was a conversion from a manually handled vector to
2018 xbt_dynar_t on the critical path.
2019 xbt_dynar_foreach calls functions, inducing stack management crap.
2021 We inlined these functions and xbt_dynar_foreach is now breath taking.
2022 We also inlined xbt_swag_belong on the way.
2024 Here are some approximate speedup measurements (on master/slaves
2025 simulations lasting between 10s and 20s each):
2026 3.3.1 -> 3.3.2: about same performance
2027 3.3.2 -> 3.3.3: 40% speedup
2028 3.3.1 -> 3.3.3: 40% speedup
2029 3.3.1 with inline patch -> 3.3.3: 30% speedup
2031 Our reading is that the refactoring which occurred in 3.3.2 made us
2032 suffer much more from the xbt_dynar_foreach low performance, but
2033 once we solved this, this refactoring proved to be very performance
2034 effective. From the 40% speedup, somehow, 10% are due to the
2035 inlining and 30% to the refactoring.
2037 That's a pitty that gcc cannot inline functions placed in other files
2038 alone. We have to choose between:
2039 - break the encapsulation (by putting private data structures and
2040 accessors in headers files to help gcc)
2041 - live with low performance
2042 - switch to a decent compiler such as icc (not quite possible).
2044 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
2046 SimGrid (3.3.2) stable; urgency=low
2048 The "Simplicity does not preceed complexity, but follows it" release.
2050 The main contributors of this release were (lexical order):
2051 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
2054 * Extract the routing logic into its own object.
2055 (was dupplicated in network.c and workstation_LV07.c;
2056 Allows to implement other ways of storing that info)
2057 => kill now useless network_card concept
2058 - Use dynar to represent routes (instead of void** + int*)
2059 - kill link_set (use surf_network_model->resource_set instead)
2060 - Add a command-line option to choose the routing schema to use
2061 - Add three new models:
2062 * Floyd (shortest path computed at initialization)
2063 * Dijikstra (shortest path recomputed all the time)
2064 * Cached Dijikstra (shortest path computed on need)
2065 All these models where contributed by Silas De Munck, and are
2066 described in his ICCS09 paper.
2068 * Simplify model declaration
2069 (less redirections, less function to write when defining a model)
2070 - Factorize stuff between models:
2073 surf_model_resource_set(model)
2074 surf_model_resource_by_name(model, name)
2075 - Unify the types of models in s_surf_model_t (using an union)
2076 - Embeed fields of common_public directly into s_surf_model_t
2077 - Rename model methods:
2078 action_free ~> action_unref
2079 action_change_state ~> action_state_set
2080 action_get_state ~> action_state_get
2081 - Change model methods into functions :
2082 (model)->common_public->action_use ~> surf_action_ref
2084 * Implement a generic resource; use it as ancestor to specific ones
2085 (allows to kill duplicated code in models)
2086 Drawback: timer command don't need no name nor properties;
2087 workstation_CLM03 don't need no properties
2088 (but I guess we can live with those few bytes wasted)
2090 * Improve the action object model
2091 - implement a constructor avoiding dupplicated code about field
2092 initialization in generic_action part.
2094 * Kill the SDP model: it has an external dependency, is deprecated
2095 in flavor of modern lmm models, and didn't compile since a while
2098 * Relocation of the context module from XBT to SIMIX.
2099 (the context were decoupled from the simix processes, duplicating a lot of code)
2100 => a lot of code was factorized
2101 - less overhead is introduced during scheduling
2102 - simpler API for the context factory
2103 - the logic for process creation,destruction and manipulation was simplified
2104 * Simplification of the s_smx_process_t data structure.
2105 => accesing the simix level data associated to a process is faster now,
2106 and the code is a lot more readable.
2109 * Implement some more MPI primitives:
2110 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
2111 -implementation: Bcast: flat or 2-ary tree (default),
2112 Barrier: 4-ary tree,
2114 Allreduce: Reduce then Bcast
2115 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
2116 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
2117 Alltoallv: flat tree, like ompi
2119 * Add support for optimized collectives (Bcast is now binomial by default)
2120 * Port smpirun and smpicc to OS X
2123 * Kill SD_link_get_properties: hard to maintain and makes very little sense
2124 Shout out if you used it.
2127 * Display the list of still queued messages in SG mode when existing
2131 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
2132 * Add xbt_graph_node_get_outedges() [Silas De Munck]
2133 * Add xbt_str_from_file(FILE*)
2134 * Add xbt_dict_get_key achieving a linear reverse search
2135 * Remove the context module
2137 Portability report of this version:
2138 * Main portability targets:
2139 - Linux(debian)/x86/context
2140 - Linux(debian)/x86/pthreads
2141 - Linux(debian)/amd64/context
2142 - Linux(debian)/amd64/pthreads
2143 On these, we still have the eratic breakages of gras/pmm and
2144 amok/saturate_sg reported in previous version. We still think
2145 that the tests are the cause of the fault, not the tested code.
2147 - Mac OSX Leopard/x86/context
2148 Still false negative in tesh autotesting.
2149 Smpi still fails, but this time because readlink does not accept -f
2150 Everything seems to work properly beside of that.
2153 - AIX version 5.3 (only tested contexts this time)
2154 Smpi still fails there because mktemp is not installed.
2155 Everything seems to work properly beside of that.
2157 I managed to compile it for the first time, but several breakages.
2158 Won't delay the release for this exotic platform.
2160 * Windows: it's still lagging behind. If you want to help, please
2163 Timing report of this version:
2164 This version seem to be more than 5% faster than 3.3.1 (on linux
2165 64bits with contextes). The gain is less than expected, we are
2166 investigating this for next release.
2168 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
2170 SimGrid (3.3.1) stable; urgency=low
2173 * Implement a --cfg-help to show existing configuration variables
2174 * Build chain do not require doxygen in maintainer mode
2177 * fix a bug on struct sizeof computation, which prevented the
2178 exchange of arrays of structs in some conditions
2179 - added a regression test about this in datadesc_usage
2180 * Allow the exchange of 0-long dynamic vectors.
2181 - for that, use -1 as indicator of dynamic size instead of 0
2182 - This implied to change any size from unsigned long to long,
2183 reducing a bit communication abilities, but I guess that with
2184 64bits being quite common, this is more than enough.
2185 - This also induce a protocol change, thus bumping network protocol
2186 version from 0 to 1 (if we have external users, we have to get
2187 clean on that point too ;)
2188 - added two regression tests about this in datadesc_usage
2189 * Be more verbose when propagating local exceptions
2190 This helps debugging.
2191 * Display the status of simulated processes when receiving SIGINT in
2195 * Allow to control the simulation from a trace file.
2196 New functions MSG_action_register() and MSG_action_trace_run()
2197 The first one allows to associate a function execution to each
2198 kind of action while the second one parses a trace file and
2199 triggers the corresponding actions within the system.
2200 For now, only a toy example is provided in examples/msg/actions
2201 * Add an exemple of process migration in examples/msg/migration
2202 * Fix a bug in task exchange which broke MSG_task_get_sender()
2203 Add a teshsuite regression test for that.
2204 [Bug: if MSG_task_get_sender() is called after sender exit,
2206 * Fix a bug which prevented suspend/resume to work properly
2207 * Display the status of simulated processes when receiving SIGINT
2208 This fixes a regression of v3.3. due to the introduction of SIMIX
2209 * Bug fixing in failure management:
2210 - trace could not start by a failure at time 0
2211 - failure during communications were not working
2214 * Add SIMIX_process_set_name() to change the name of the current
2215 process in the log messages.
2216 * Store smx_hosts in a dict since we only retrieve them by name
2217 * Move the configuration infrastructure to surf
2220 * Move the configuration infrastructure to surf
2223 * Massive internal cleanups:
2224 - Store internal structures on processes instead of hosts (allows
2225 to have more than one process per host, in addition of being more
2227 - Cleanup the initialization/finalization process
2228 - Kill a whole bunch of unneeded synchronization:
2229 processes run in exclusive manner within the simulator
2230 - Move queues from global tables to process data fields
2232 - now accept -platform and -hostfile arguments
2233 - Pass the right rank value to processes according to the hostfile
2234 * Compile the examples by default, and use them as regression tests
2235 * Implement MPI_Wtime()
2236 * Change the reference speed to a command line option
2239 * TCP_gamma can now be specified as command line option using
2240 --cfg=TCP_gamma:10000000.0
2241 * Change the --surf-path cmd line option into --cfg=path:
2244 * Also include strbuff from xbt.h public header
2245 * xbt_ex_display(): do not free the exception after displaying
2246 This allows to do more with the given exception afterward.
2247 Users should call xbt_ex_free() themselves.
2251 Portability report of this version:
2252 * Main portability targets:
2253 - Linux(debian)/x86/context
2254 - Linux(debian)/x86/pthreads
2255 - Linux(debian)/amd64/context
2256 - Linux(debian)/amd64/pthreads
2257 These targets fail about 1/10 of times on gras/pmm, but we believe
2258 that this is because of the test, not because of simgrid.
2259 amok/saturate_sg fails even more rarely, and the test may not be
2262 - Mac OSX Leopard/x86/context
2263 The test suite still spits tons of errors because some obscure
2264 force prevents us from removing the temporary directories
2265 arguing that they still contain some metadata I've never heard of.
2266 Smpi fails because seq is not installed.
2267 Everything seems to work properly beside of that.
2270 - AIX version 5.3 (both contexts and pthread)
2271 Smpi still fails there because mktemp is not installed.
2272 XML inclusions seems rosty on AIX.
2274 * Windows: it's still lagging behind. If you want to help, please
2277 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
2279 SimGrid (3.3) stable; urgency=high
2283 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
2284 [Malek Cherier & Mt]
2286 * Introduce the SIMIX module: factorize code between MSG and GRAS.
2289 Until now, GRAS were using MSG as an interface to SURF. It was
2290 quite difficult because both interface have several differences
2291 (MSG channels vs GRAS sockets were the most notable point).
2293 This also opens the gate to SMPI (which should occur soon) and speed
2294 up simulations by to 40% (even if it were not the main goal).
2296 **************************************
2297 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
2298 **************************************
2299 The point is that events occuring at the exact same timestamp are
2300 not scheduled in the same order with the old and new version. This
2301 may be enough to completely change the execution of simulations in
2302 some cases. Sorry for the inconvenience.
2304 * Cleanup and upgrade the XML format to push further scalability
2305 issues (check http://hal.inria.fr/inria-00256883/ for more info)
2307 * Improve the testing infrastructure with tesh. Now a very large part of
2308 the code is tested not only by being run but also by checking that the
2309 output match an expected output [Mt].
2311 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
2312 is really less memory-demanding, which should allow you to use
2313 larger files in SimGrid [AL].
2315 * Inform valgrind about our contextes, so that it becomes usable
2316 with the default (and more effecient) version of SimGrid
2317 [contributed by Sékou Diakite, many thanks]
2320 * Introduce a listener thread in charge of receiving incoming
2321 messages from the network. It allows to overlap communication and
2322 computation but most notably, it removes some stupid deadlocks due
2323 to the fact that so far, a process could not send and receive at
2324 the same time. This made most non trivial communication schema
2326 * Convert the PIDs from long int to int to match the MSG ones (and
2327 linux ones too) [Mt]
2328 * New function: gras_agent_spawn() to launch a new process on
2329 current host. Only working in simulation for now. [Mt]
2330 * New function: gras_os_hostport() returning a constant form (ie,
2331 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
2334 * Make the backtrace of exceptions more human readable [Mt]
2335 * New module: xbt/str [Mt]
2336 a ton of string utility functions (split, join, printf to a newly
2337 allocated buffer, trim, etc)
2338 * New module: xbt/hash [Mt]
2339 SHA1 hashing algorithm (more to come if needed)
2340 * New module: xbt/synchro [Mt]
2341 synchronization tools (mutex and conditions) working the same way
2342 in simulation and in real life (mainly useful for GRAS, but not
2344 * New module: xbt/queue [Mt]
2345 classical producer/consumer synchronization scheme
2346 * xbt_dynar_new_sync() creates a synchronized dynar. All access
2347 (using the classical functions will get serialized) [Mt]
2348 * Make dictionary internal table dynamic. No need to specify its size
2349 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
2351 * Make sure the log channels are organized as a tree under windows
2352 (because of ANSI C compatibility issue, any channel were child of
2353 root directly) [Mt].
2356 * Cleaned many thing in surf and fixed a few bugs [AL].
2357 * Add a nice command line configuration mechanism to compose models [AL].
2358 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
2359 the previous one (KCCFLN05). It relies on something that looks like
2360 a max-min sharing mechanism but cannot be written as such. A new solver
2361 was thus designed [AL].
2362 * Add a new solver to lmm. Based on Lagrange optimization and
2363 gradient-based descent, it enables to efficiently maximise systems s.a
2365 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
2367 This solver enables to propose two new network models for TCP Reno and
2368 TCP Vegas based on Low's work. These models still need to be fully
2369 tested though [Pedro Velho].
2372 * Bug fix in SD_simulate. Now the time bound given as argument is
2374 * Use the new parallel task model (ptask_L07) as default.
2375 * Use the SURF command line configuration mechanism.
2376 * 0-size tasks (for synchronization) should now work.
2378 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
2380 SimGrid (3.2) stable; urgency=high
2384 We still experience issues on this platform, but we believe that at
2385 least MSG is usable.
2387 GRAS API BREAKAGE (for simplification purpose, sorry):
2388 * the gras_msgtype_by_name is not used anymore. Instead of
2389 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
2390 you can write (and must)
2391 gras_msg_send(toserver, "request", &request);
2392 - If you still want to pass a gras_msgtype_t to the function (to cache
2393 the type and avoid the lookup time), use the gras_msg_send_() variant.
2394 - Impacted functions:
2395 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
2396 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
2397 * The callbacks are now expected to return 0 when everything went well
2398 (just like the main() function)
2400 GRAS new features and improvements:
2401 * New module mechanism where user code can use per process globals [Mt]
2402 This is similar to gras_userdata_*() functions, but for libraries. It
2403 factorize some code developped over and over in the examples and AMOK.
2404 It has still to be documented and used (only amok/peermanagement is
2406 * Fix a vicious bug in the TCP buffering mechanism which leaded to message
2407 loss when they were small enough to fit into the buffer and sent quickly
2408 enough so that they can all get received in one shoot.
2409 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
2410 if not found. Use the *_or_null() variant for the old semantic.
2411 * In gras_msg_handle, do not discard messages without callback.
2412 They are probably messages to be explicitly awaited later (ie, proofs of
2413 mis-synchronization in userland since they are sent before being awaited)
2414 No big deal usually.
2415 * gras_socket_meas_send/recv: semantic changed!
2416 The numerical arguments used to be (1) the total amount of data to send
2417 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
2418 messages. This was need for the fool willing to send more than MAXINT
2419 bytes on quite fat pipes.
2422 * Do really rename the hostmanagement module to peermanagement. [Mt]
2423 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
2424 but this is rather new and this was documented in the module
2425 documentation (poor excuses, I admit)
2426 * Bandwidth measurement semantic changed! This follows the changes to
2427 gras_socket_meas_send/recv explained above.
2430 * A sequential mode has been added to the workstations. When a workstation
2431 is in sequential mode, it can execute only one task, and the other tasks
2432 are waiting in a FIFO. [Christophe Thiery]
2435 * The KCCFLN05 workstation model now handles parallel tasks. It is the
2436 model for SIMDAG. [Christophe Thiery]
2437 * Bug fix in the maxmin solver: Some values were close to 0 instead of
2438 equal to 0, which caused some bad behaviors in
2439 saturated_constraint_set_update. I now use a threshold mechanism like in
2443 * When running manually src/testall, you select specific units [Mt]
2444 testall is the result of our cunit mechanism, and should replace all
2445 the scripty thingy around since bash don't run easily on billware.
2447 * A mallocator system has been added. [Christophe Thiery]
2448 Mallocators allow you to recycle your unused objects instead of freeing them
2449 and allocating new ones.
2451 Documentation update:
2452 * FAQ reworking + New FAQs:
2453 - "Valgrind spits tons of errors!" [Mt]
2454 - "How to repport bugs" [Mt]
2455 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
2456 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
2457 - Communication time measurement within MSG [AL]
2458 - I experience weird communication times when I change the latency [AL]
2459 * GRAS tutorial [Mt]
2461 - an introduction to the framework and to the used communication model
2462 - an initiatic tour introducing the most proheminent features:
2464 . Lesson 0: Installing GRAS
2465 . Lesson 1: Setting up your own project
2466 o Part 2: Message passing
2467 . Lesson 2: Exchanging simple messages
2468 . Lesson 3: Passing arguments to the processes (in SG)
2469 . Lesson 4: Attaching callbacks to messages
2470 . Lesson 5: Using globals in processes
2471 . Lesson 6: Logging information properly
2472 . Lesson 7: Using internal timers
2473 . Lesson 8: Handling errors through exceptions
2474 . Lesson 9: Exchanging simple data
2475 . Lesson 10: Remote Procedure Calling (RPC)
2476 . Lesson 11: Explicitely waiting for messages
2477 . Recapping of message passing features in GRAS
2478 - A HOWTO section containing:
2479 o HOWTO design a GRAS application
2480 More are due, of course. They will come latter. In the meanwhile, you can
2481 check the examples which are still here.
2483 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
2485 SimGrid (3.1) stable; urgency=high
2489 There was a stack corruption somewhere, visible only when optimizing
2490 with these versions. [Vince]
2493 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
2494 module that enabled to play with Directed Acyclic Graphs. It is built
2495 directly on top of SURF and provides an API rather close to the old
2496 SG. Some old codes using SG are currently under rewrite to check that
2497 all needful functions are provided. [Christophe Thiery]
2500 * Complete rewrite of the KCCFLN05 workstation model. It is now an
2501 extension of the classical CLM03 model that gracefully handles
2502 failures. This is now the default model for MSG and GRAS. It doesn't
2503 handle parallel tasks yet though. [AL]
2504 * Bug fix: Weights were not correctly set in the network part.
2505 WARNING: This may have resulted in incorrect results with simulations
2506 where there are more than one flow on a given link. [AL]
2509 * After a (long ?) discussion on simgrid-devel, we have decided that the
2510 convention we had on units was stupid. That is why it has been decided
2511 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
2512 WARNING : This means that all previous platform files will not work as
2513 such with this version! A warning is issued to ask users to update
2515 A conversion script can be found in the contrib module of the CVS, under
2516 the name contrib/platform_generation/surfxml_update.pl [MQ]
2519 * Bug fix: Processes were started in reverse order, wrt deployment file.
2520 WARNING: if your code relies on this bug, please fix it. [AL]
2521 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
2522 being executed on two different locations. [AL]
2523 * Bug fix: Failures are now better supported thanks to Derrick's tests
2524 (there was many failure situations I hadn't thought of and that weren't
2525 correctly handled). [AL]
2526 * New function: MSG_host_is_avail indicates you whether a given m_host_t
2530 * New! a real RPC mechanism, as it ought to be since too long. [MQ]
2531 Exception occurring on server-side are propagated back to client (!).
2533 API CHANGE: the callback changed their prototype. Change:
2534 int my_handler(gras_socket_t expeditor, void *payload_data) {
2536 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
2537 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
2539 * New! function: gras_msg_handleall to deal with all messages arriving
2540 within a given period.
2541 * New! function: gras_socket_server_range to get a server socket in a
2542 range of port numbers (ease to avoid port number conflicts) [MQ]
2543 * New! gras processes display their backtrace when they get a SIGUSR1
2544 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
2545 Sweet to debug RL processes [MQ]
2549 - Do not force experiment sizes to be expressed in kb, or it becomes
2550 impossible to measure the latency this way (needs one byte-long tests)
2551 WARNING: this changes the amok_bw_* function semantic. [MQ]
2552 - Implements the link saturation stuff. [MQ]
2553 * Peer management module:
2554 New! module factorizing code that we wrote over and over [MQ].
2557 * New module: cunit (my jUnit implementation in ansi C) [MQ]
2558 - Test units are placed directly into the library code, they get extracted
2559 automatically and placed into the src/testall binary.
2560 - Convert most of the XBT tests to this system.
2561 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
2562 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
2563 live in the same C code. This required to change a little bit the API
2564 of surfxml parsing but shouldn't be an issue for end-users. [AL]
2565 * New module: sparse graph structure with basic algorithms (this is work
2566 in progress and the API is not considered to be frozen yet). [AL]
2567 * Display more information on backtraces: source line & function names are
2568 now displayed just like valgrind does (rely on addr2line tool) [MQ]
2569 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
2570 * Reworked a little bit some #include statements to load only required
2571 headers. Some user code that relied on SimGrid to include stdlib or
2572 stdio may need to include it by themselves. [AL]
2573 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
2575 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
2576 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
2577 but I guess that almost nobody used those parts. [MQ]
2579 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
2581 SimGrid (3.0.1) stable; urgency=low
2584 * Unfortunately, I had missed 5 misnamed functions:
2585 xbt_fifo_item_t xbt_fifo_newitem(void);
2586 void xbt_fifo_freeitem(xbt_fifo_item_t);
2587 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
2588 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
2589 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
2590 They're now deprecated. Please use their new versions:
2591 xbt_fifo_item_t xbt_fifo_new_item(void);
2592 void xbt_fifo_free_item(xbt_fifo_item_t);
2593 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
2594 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
2595 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
2597 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
2598 * Documentation: xbt_log module unmercifully reworked [MQ]
2599 * Bugfix: there was a problem with the ending of contexts with
2600 the pthread backend. It caused some weird deadlock or behavior
2601 depending on the pthread implementation. [AL]
2602 * Bugfix: get the exceptions raised in the simulator repport where
2603 and why they come from when they are not catched in time [AL, MQ]
2606 * Bugfix: Do repport the error when two non-connected hosts try to
2607 exchange data (Thanks to Flavien for stumbling into this one) [AL]
2610 * Add additionnal checkings on communications. Assert that two
2611 communicating hosts are connected by a set of links... [AL]
2614 * Add additionnal checkings on channel values in communication [AL]
2615 * New: MSG_task_get_source to see on which host a task was generated [HC]
2616 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
2617 the number of tasks waiting to be received on channel and sent
2619 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
2620 waits for the first task coming from a given host.. [AL]
2622 GRAS new functionnalities: [MQ]
2623 * Enhance the parsing macro to allow the size of multidimentional objects
2624 to be given thru annotations.
2625 * New example (and documentation): Matrix Multiplication a la RPC
2626 (as when I was young!) and fix a bunch of bugs found on the way.
2628 GRAS performance improvements: [MQ]
2630 * Reduce the amount of cbps creation/destruction by making it static to
2631 datadesc_send/recv() and using a (newly created) cbps_reset (based on
2634 * Change libdata to a set so that we can search for stuff by ID (and thus
2635 reduce the insane amount of dict lookups)
2638 * Actually implement gras_datadesc_copy() so that we don't have to mimick
2639 RL communication on top of SG since it's so uneffective.
2640 It may also be used for inter-thread communication in RL, one day.
2641 * Use gras_datadesc_copy() to exchange messages on top of SG
2643 - improve message exchange performance on top of SG
2644 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
2645 * Don't exchange on the network the size of the used part of buffer,
2646 instead, specify the possible buffer size to read().
2648 - reduces the amount of read/write calls (one pair per exchange)
2649 - reduces the amount of exchanged data (the size)
2650 - allows to retrieve all arrived data on receiver side, if we don't need
2651 it right now (subsequent read will peek the buffer)
2652 - allows the receiver to proceed with the begining of the stream before
2653 everything is arrived
2654 - make it possible to build an iov transport (using readv/writev)
2656 - take care of the data with non-stable storage (like stacked data),
2658 * If possible, TCP send uses vector I/O (when writev() is here)
2659 - Don't use it for receive since we send data sizes and data on the
2660 same stream, so we wouldn't be able to chain large amount of chunks
2661 before having to flush the stuff to read the size.
2662 * Rework the transport plugin mechanism to simplify it and reduce the
2663 amount of pointer dereferencement when searching for the right function
2666 * I guess that now, we do almost as few system calls as possible while
2667 doing as few data copy as possible.
2669 To improve it further, we could try to send all the sizes first and then
2670 all the data (to use iov on receiving size), but it's only a partial
2671 solution: when you have 2 dimensional data, the sizes of the second
2672 dimension is data of the first dimension, so you need 3 streams.
2674 I'm not sure the potential performance gains justify the coding burden.
2676 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
2678 SimGrid (3.00) stable; urgency=high
2681 * New! Give the possibility to hijack the surf parser and thus bypass
2682 MSG_create_environment and MSG_launch_application. Have a look at
2683 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
2685 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
2687 SimGrid (2.96) unstable; urgency=low
2692 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
2693 This deprecates the xbt_error_t mechanisms.
2694 It modifies (simplifies) all XBT and GRAS API.
2695 MSG API keeps unchanged (exceptions raised by XBT are catched from
2696 within MSG and masked with existing error handling facilities)
2699 * New! Add a FATPIPE model. [AL]
2700 * New! Add a parallel task model. [AL]
2701 * New! Add automatically a loopback interface (in the default
2702 network model) if none was precised.
2705 * Bugfix: MSG_process_resume now works with the current running process.
2707 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
2708 * Modification of MSG_task_get_compute_duration. Once a task has been
2709 processed, the value returned by this function is now equal to 0. [AL]
2710 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
2711 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
2712 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
2713 of a m_task. For now, MSG_task_cancel only works with computation
2715 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
2716 of the processor (in Mflop/s) regardless of the current load on the
2718 * API Change: use proper naming convention for MSG_getClock and
2719 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
2721 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
2722 This function changes the priority of a computation task. This priority
2723 doesn't affect the transfer rate. A priority of 2 will make a task
2724 receive two times more cpu power than the other ones. This function
2725 has been added to suit the needs of Nguyen The Loc and hasn't been that
2726 much tested yet. So if it fails, please report it and send me your code.
2728 * API Change: removed all functions and types that were marked "deprecated"
2729 since many months. Renamed MSG_global_init_args to MSG_global_init.
2731 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
2733 SimGrid (2.95) unstable; urgency=low
2736 * Steal some nice code to GNU pth to fix context detection and usage [AL]
2737 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
2738 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
2741 * Bugfix: Allow absolute paths for platform description files [MQ]
2742 * Bugfix: do free the variables after use. Leads to drastic performance
2744 * Implement max_duration (ie, timeouts) on resources [AL]
2747 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
2749 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
2750 the needed support (timeouts) [AL]
2753 * Implement measurement sockets. You can now get the bandwidth between two
2754 hosts thanks to AMOK (see below). [MQ]
2755 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
2756 dynar over the network (yeah) [MQ]
2757 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
2758 * simple/static token-ring example. [Alexandre Colucci and MQ]
2759 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
2760 in place before [MQ]
2763 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
2764 type parsing. "short" and "long" modifiers were also ignored; other
2765 modifier (such as reference level) are still ignored. [MQ]
2766 * Embeed the buffer size within the buffer itself on SG. [MQ]
2767 That way, send() are atomic and cannot get intermixed anymore (at least
2768 the ones which are less than 100k; bigger messages still have the issue)
2769 * Array size pushed by the field, not by the field type (or each
2770 and every long int will push stuff to the cbps) [MQ]
2771 * use select() to sleep since it allows to portably sleep less than one
2774 GRAS (minor cleanups)
2775 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
2778 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
2779 * type category 'ignored' killed as it was never used and were difficult
2781 * whether a type can cycle or not is now a flag, leaving room for more
2782 flags (as "ignored", if we feel the need one day ;)
2783 * Rename raw sockets to measurement sockets since "raw" has another
2784 meaning in networking community.
2787 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
2788 and offers features not belonging to GRAS but that most applications
2789 need. One day, it may be a set of plugins loadable at runtime.
2790 * New module: bandwidth
2791 bandwidth measurement between arbitrary nodes running this module. [MQ]
2793 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
2795 SimGrid (2.94) unstable; urgency=low
2797 The first beta release of SimGrid 3 !
2801 * Update the main page and the FAQ. Adding references to gforge.
2804 * Add a gras_os_getpid function.
2807 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
2808 * Extend the logs so that they also print PID, hostname, date, ... if
2810 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
2811 and kill the old version which were in testsuite/
2812 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
2816 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
2817 for users. Instead, each programming environment (GRAS, MSG,...) use it
2818 when needed to provide such a feature to users.
2819 Don't shortcut the mechanism or you will also shortcut the virtualization
2820 you need on the simulator.
2824 * Cleanups in configury with regard to compile optimization/warning flags.
2825 Also add -fno-loop-optimize to any powerpc since it's the optimization
2826 killing gcc (< 3.4.0).
2827 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
2828 needed by MSG examples complications
2829 * Borrow configury beautifications from PHP
2832 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
2833 warning (thanks loris for stumbling into this one).
2834 * Bugfix: stop loading private headers (gras_config.h) from the public
2838 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
2839 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
2840 RL would imply a DNS resolver, which is *hard* to do in a portable way
2841 (and therefore delayed).
2842 * Implement a real timer mechanism and use it in timing macros. This allows
2843 to avoid rounding errors and get a 0.000005 sec precision in timing
2844 macros. While I was at it, various cleanups:
2845 - allow to declare more than one timed section per file (fix a stupid bug)
2846 - move some private declaration to the right place
2847 - merge conditional execution and timing macros into emulation module
2848 - document the module
2849 - make sure the module cleanups its mess on gras_exit
2850 * Documentation improvements:
2851 - (new) how to compile applications using GRAS
2852 - (new) emulation support (timing macros)
2854 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
2856 SimGrid (2.93) unstable; urgency=low
2858 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
2861 - Use Paje properly where used. Still to be sanitized properly.
2862 - Portability fix: Add an implementation of the contexts using pthread
2866 - Add xbt_procname(): returns the name of the current process.
2867 Use it to show the current process's name in all logging.
2869 - fix detection of older flex version and the reaction, since we do
2870 depend on modern ones (we use lex_destroy)
2871 - Better separation of SG and RL in the libs: remove all simulation code
2872 from libgras. As a result, this lib is now only 200k when stripped.
2873 Some of the xbt modules may also be duplicated (two sets and such) and
2874 should be cleaned/killed before SG3.
2875 - Insist on using xlC on AIX because of weird problems involving gcc there.
2876 - Cleanup the make remote stuff. This is now done by scripts
2877 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
2878 mainly for our private use, but we're working on changing them to user
2881 - Bugfix: flush the socket on close only if there is some *output*.
2882 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
2884 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
2887 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
2889 SimGrid (2.92) unstable; urgency=low
2891 Alpha 3 on the path to SimGrid 3
2895 - New! First try of benchmarking macros.
2896 - New! First try so that gras_stub_generator generate deployment and
2897 remote compilation helpers.
2899 - Bugfix: Initialization fix in msg_test.
2903 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
2905 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
2907 - API Change: gras_os_sleep to take the amount of seconds as a double.
2908 Accepting an int was error prone since it was the only location where
2909 seconds were coded as such. It leaded to damn rounding errors.
2910 - Bugfix: Hard to belive that timers ever worked before this.
2912 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
2914 SimGrid (2.91) unstable; urgency=low
2916 Alpha 2 on the path to SimGrid 3
2920 - Bug fix in the lmm_solver.
2922 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
2923 through the function MSG_paje_output.
2924 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
2925 - It is possible to bound the rate of a communication in MSG with
2926 MSG_task_put_bounded() (was already in the previous version but I had forgotten
2927 to write it in the changelog).
2928 - Bug fix to let GRAS run on top of MSG until we move it directly on top
2933 - Various cleanups to the autotools stuff
2934 - Begin to move Gras examples to examples/gras/
2935 - Let make distcheck work again (yeah!)
2937 - documentation overhauled using doxygen.
2938 gtk-doc-tools is dead in SimGrid now.
2939 - Automatically extract all existing logging categories, and add the list
2940 to the documentation (long standing one, to say the less)
2942 - Cleanup the known architecture table. Reorder the entries to group what
2943 should be, and use a more consistent naming scheme.
2944 (some of the test dataset are still to be regenerated)
2945 - New! Allow library to register globals on each process just as userdata
2947 This is implemented using a xbt_dict and not a xbt_set, so we loose the
2948 lookup time (for now).
2949 Use it in msg and trp.
2950 This cleans a lot the internals and helps enforcing privacy of the
2951 headers between the gras components.
2952 - New! Add a timer mechanism, not unlike cron(8) and at(1).
2953 - Bugfix: gras_os_time was delirious in RL.
2954 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
2956 - Reenable GRAS now that it works.
2958 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
2960 SimGrid (2.90) unstable; urgency=low
2962 Alpha 1 on the path to SimGrid 3
2964 * It is a long time since the last release of SimGrid. I'm sorry about
2965 that but as I had told you, I was rewriting a lot of things. I apologize
2966 to those who had been reporting bugs to me and that I had not answered.
2967 If your bug is still in the new version, please tell me. Here is a
2968 summary of the main changes.
2970 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
2971 lead by Martin Quinson. As a consequence SimGrid gains a lot in
2972 portability, speed, and a lot more but you'll figure it out later.
2973 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
2974 I wanted to release the new MSG as soon as possible and I have
2975 broken GRAS, which is the reason why, for now, only MSG is fully
2976 functional. A laconic description of these projects is available
2977 in the documentation.
2979 * REVOLUTION 2: I have removed SG and I am now using a new simulation
2980 kernel optimized for our needs (called SURF but only the developers
2981 should use it). Hence, MSG is now roughly 30 times faster and I think
2982 that by rewriting a little bit MSG, I could event speed it up a little
2983 bit more. Beside the gain in speed, it is also much easier to encode a
2984 new platform model with SURF than it was with SG. More to come...
2986 * REVOLUTION 3: I have tried to change a little as possible the API of
2987 MSG but a few things really had to disappear. The main differences
2988 with the previous version are :
2989 1) no more m_links_t and the corresponding functions. Platforms are
2990 directly read from a XML description and cannot be hard-coded
2991 anymore. The same format is used for application deployment
2992 description. The new format is described in the documentation.
2993 Have a look in tools/platform_generation. There is a tiny script
2994 that converts from the old platform format to the new one. Concerning
2995 the application deployment format, parsing the old one is tricky.
2996 I think most of you should however be able to convert your files. If
2997 it is really an issue, I can write a C code that does the conversion.
2999 2) the toolbox tbx does not exist anymore. We now have a library
3000 with much more data-structures but without the hash-tables (we have
3001 dictionaries that are much faster).
3003 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
3005 *****************************************************************************
3006 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
3007 * don't feel like converting the oldies. (Mt) *
3008 *****************************************************************************
3011 Version 2.90: "the long awaited one"
3012 - Finished rewriting and debugging MSG. Rewrote the documentation.
3013 - disable GRAS for now since it needs to be ported to the newest SG
3016 - Finish the port to windows (using mingw32 for cross-compile)
3019 - Main loop and datastructures of SURF. A cpu resource object is
3020 functional. Surf can thus be used to create cpu's with variable
3021 performance on which you can execute some actions.
3023 2004-11-15 Martin Quinson
3024 - Port to ARM. Simply added the alignment and size descriptions. Should
3025 work, but the ARM machines are so slow that I didn't had the opportunity
3026 to 'make check' over there yet.
3028 2004-11-15 Arnaud Legrand
3029 - Trace manager now written. It uses a heap structure and is therefore
3030 expected to be efficient. It may however be speeded up (particularly
3031 when many events occur at the same date) by using red and black
3032 trees. One day maybe...
3033 - Max-min linear system solver written. It uses a sparse matrix
3034 structure taking advantage of its expected use. Most operations are
3035 O(1) and free/calloc are called as few as possible. The computation of
3036 the minimum could however be improved by using a red and black tree
3039 2004-11-03 Arnaud Legrand
3040 - Rename every gras_* function that was in xbt/ to its xbt_
3042 - Add a heap and a doubly-linked list to xbt
3043 - Added a dichotomy to the dictionaries. make check works as well before
3044 so I assume that the patch is correct. I do not know however if things
3045 run effectively faster than before now. :)
3047 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
3048 SimGrid, and the version number is bumped to 2.x
3050 2004-10-29 Martin Quinson
3051 - Introduction of the remote errors.
3052 They are the result of a RMI/RPC on the remote machine.
3053 ErrCodes being scalar values, you can't get the host on which those
3054 errors did happen. Extending the error mechanism as in Gnome is possible.
3055 No idea yet whether it is a good idea.
3057 2004-10-28 Martin Quinson
3058 - Interface revolution: the Starred Structure Eradication.
3059 I used to do typedef struct {} toto_t; and then handle *toto_t.
3060 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
3061 - ???_t is a valid type (builded with typedef)
3062 - s_toto_t is a structure (access to fields with .)
3063 - s_toto is a structure needing 'struct' keyword to be used
3064 - e_toto_t is an enum
3065 - toto_t is an 'object' (struct*)
3067 typedef struct s_toto {} s_toto_t, *toto_t;
3068 typedef enum {} e_toto_t;
3069 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
3070 s_toto_t) is private.
3072 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
3073 so that it can set the variable to NULL. It was so for dicts and sets,
3074 it changed for dynars.
3076 - Fix a bunch of memleaks in dict_remove
3077 - Fix a bug in sg/server_socket opening: it failed all the time.
3079 2004-10-07 Martin Quinson
3080 - Speed up dynar lookup operation a bit.
3082 gras_dynar_get is dead.
3084 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
3085 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
3086 (which gives you the address of the stored data).
3088 gras_dynar_get_as is an helpful macro which allows you to retrieve a
3089 copy of the data using an affectation to do the job and not a memcpy.
3091 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
3092 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
3094 It does not really speedup the dynar test because they are
3095 setting elements all the time (and look them seldom). But the dict does
3096 far more lookup than setting.
3098 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
3100 2004-10-05 Martin Quinson
3101 - Allow to (en/dis)able the cycle detection at run time.
3103 Whether we should check for cycle or not is now a property of each
3104 datatype. When you think there may be some cycle, use datadesc_cycle_set.
3105 datadesc_cycle_unset allow to remove this property when previously set.
3107 Note that the cycle detection is off by default since it impacts the
3108 performance. Watch the data you feed GRAS with ;)
3110 This property is hereditary. Any element embedded in a structure having it
3111 set have it set for the time of this data exchange.
3113 You should set it both on sender and receiver side. If you don't set it on
3114 sender side, it will enter an endless loop. If you forget on receiver
3115 side, the cycles won't be recreated after communication.
3117 - Header reorganization.
3118 Kill gras_private.h, each submodule must load the headers it needs.
3120 2004-10-04 Martin Quinson
3121 - Interface revolution: do not try to survive to malloc failure.
3123 Now, gras_malloc and friends call gras_abort() on failure.
3124 As a conclusion, malloc_error is not a valid error anymore, and all
3125 functions for which it was the only gras_error_t return value are
3126 changed. They now return void, or there result directly.
3127 This simplify the API a lot.
3129 2004-09-29 Martin Quinson
3130 - Re-enable raw sockets.
3131 Created by gras_socket_{client,server}_ext;
3132 Used with gras_raw_{send,recv}
3135 It should allow to kill the last bits of gras first version soon.
3137 This is not completely satisfactory yet (duplicate code with
3138 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
3141 - Simplify transport plugin (internal) interface by not passing any
3142 argument to _server and _client, but embedding them in the socket
3145 2004-09-28 Martin Quinson
3146 - Finish the port to AIX.
3147 autoconf was my problem (segfault within the malloc replacement
3148 function. No idea why)
3150 2004-09-16 Martin Quinson
3151 - Fix some size_t madness on 64bit architectures.
3153 2004-09-08 Martin Quinson
3154 - Reduce the number of system headers loaded, overload some more system
3155 calls (such as malloc to cast the result of the system one, and work
3157 - Fix and reintroduce the config support
3159 2004-09-07 Martin Quinson
3160 - Source code reorganization to allow Arnaud to surf all over there.
3161 - Allow to document the logging categories.
3162 - Remove all uppercase from logging categories and useless cleanup in names.
3164 2004-08-18 Martin Quinson
3165 Version 0.6.2 (protocol not changed; API changed)
3166 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
3167 gras_error_t), and NULL when not found. Functions expecting a msgtype
3168 as argument (msg_wait; msg_send) deal with NULL argument by providing a
3169 hopefully usefull message.
3170 - Portability to prehistoric sparcs again
3172 2004-08-17 Martin Quinson
3173 Version 0.6.1 (protocol not changed; ABI not changed)
3174 - prealloc some buffers to speed things up
3176 2004-08-11 Martin Quinson
3177 Version 0.6 (protocol not changed; ABI expended)
3178 - The parsing macro can deal with the references, provided that you add
3179 the relevant annotations (using GRAS_ANNOTE(size,field_name))
3181 2004-08-09 Martin Quinson
3182 Version 0.5 (protocol not changed; ABI changed)
3183 - Allow to off turn the cycle detection code in data exchange at
3184 compilation time. It should be at run time, but I'm short of time (and
3185 the config stuff is still broken). That way, we keep dict out of the
3186 critical path, which is good because the performance is poor:
3187 - search not dichotomial yet
3188 - dynar give no way to access their content and memcpy everytime
3189 - In composed data description (struct, ref and so on), stop foolness of
3190 keeping the subtype's ID, but store the type itself. This keeps sets out
3191 of the critical path, which is good since they rely on dynar and
3192 dictionnaries. The only loose of that is that we cannot detect the
3193 redeclaration of a structure/union with another content (but I'm not sure
3194 the code detected well this error before anyway). We still can detect
3195 the redefinition discrepancy for the other types.
3196 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
3197 it breaks the code because of type-punning used all over the place).
3198 This breaks on all non-gcc architectures (for now).
3200 All those changes (plus the buffer of last time) allow me to gain 2 order
3201 of magnitude on cruel tests consisting of 800000 array of integers on two
3202 level of a hierarchical structure (200 secondes -> 4 secondes)
3205 - the selector of reference must now return the type it points to, not
3206 the ID of this type.
3208 2004-08-06 Martin Quinson
3209 Version 0.4 (protocol changed; ABI not changed)
3210 - Allow to pass --gras-log argument to processes in simulation mode. Really.
3211 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
3212 - Implement a buffer transport, and use it by default (it relies on tcp in
3213 real life and on sg in simulation).
3214 That's a bit hackish since I had a new field to the structure to store
3215 its data without interfering with the subtype ones. Inheritance
3216 is tricky in C. And that's a kind of reverse inheritance with one class
3217 derivating two classes. Or maybe a game with java interfaces. Anyway,
3218 that's damn hard in C (at least).
3219 Moreover, I got tired while trying to ensure plugin separation and
3220 genericity in SG mode. MSG wants me to do weird things, so let's go for
3221 cruel hacks (temporarily of course ;).
3222 See comment in transport_private.h:71
3223 - do not include all the _interface headers in private but in the files
3224 which really need them (to cut the compilation time when they are
3227 2004-07-26 Martin Quinson
3228 Version 0.3 (protocol not changed; ABI changed)
3229 - Major overhault of the datadesc interface to simplify it:
3230 - shorted the function names:
3231 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
3232 - add a trivial way to push/pop integers into the cbps without malloc.
3233 This allows to make really generic sub_type description, which simply
3234 pop their size of the stack.
3235 - add a function gras_datadesc_ref_pop_arr() which does what users want
3236 most of the time: Declare a dynamic array (which pops its size of the
3237 stack) and declare a reference to it. Poor name, but anyway.
3238 - kill the post-send callback, add a post-receive one
3240 2004-07-23 Martin Quinson
3241 Version 0.2 (protocol changed; ABI changed)
3242 - add some testing for cpbs in the test cases, and fix some more bugs.
3243 This invalidate again the little64 data file, since I cannot regenerate
3245 - remove an awfull optimization in the logging stuff, allowing me to:
3246 - understand it again
3247 - learn gcc how to check that the argument match the provided format
3248 - fix all errors revealed by gcc after that
3249 - internal keys of dict are not \0 terminated. Deal with it properly in
3250 loggings instead of segfaulting when the user want to see the logs :-/
3252 2004-07-22 Martin Quinson
3253 - Fix some stupid bug preventing cbps (callback postit) from working
3255 2004-07-21 Martin Quinson
3256 - Some documentation cleanups
3257 - remove the useless last argument of msgtype_declare
3258 - rename the Virtu functions to fit into the 'os' namespace
3259 - move headers src/include -> src/include/gras/ and stop fooling with
3260 gras -> . symbolic link
3261 - make distcheck is now successful
3263 2004-07-19 Martin Quinson
3265 - Build shared library also
3266 - Install html doc to the right location
3267 - stop removing maintainer files in make clean
3268 - build tests only on make check
3270 2004-07-13 Martin Quinson
3272 - No major issue in previous version => change versioning schema
3273 - Re-enable little64 convertion test now that Abdou kindly regenerated the
3274 corresponding dataset.
3276 2004-07-11 Martin Quinson
3278 - Get it working with any kind of structure (we can compute the padding
3279 bytes remotely for all the architectures I have access to)
3280 - Implement the structure parsing macro (still not quite robust/complete)
3281 - Improvement to the remote testing toysuite
3283 2004-07-10 Martin Quinson
3284 [autoconf mechanism]
3285 - get ride of a bunch of deprecated macros
3286 - actually run the test for two-compliment, not only compile it :-/
3287 - test whether the structures get packed (and bail out if yes. Damn.
3288 Alignment is a serious matter)
3289 - test whether the structures get compacted (but respecting the alignment
3290 constraints of each types)
3291 - test whether the array fields of structures can straddle alignment boundaries
3293 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
3294 (took me 2 hours to find that bug, looking at the wrong place)
3295 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
3296 before sending/receiving and are used to compute the offsets of fields
3297 - Given that padding size depend even on compiler options, keep track of
3298 alignment and aligned_size only for the current architecture. Not a big
3299 deal since we send structure fields one after the other (seems
3301 - Add the datastructure used for IEEE paper by the PBIO guys to the test
3302 program, let it work on linux/gcc/little32. portability todo.
3304 2004-07-08 Martin Quinson
3305 - import and improve remote compilation support from FAST
3306 - make sure make check works on half a dozen of machines out there
3308 2004-07-07 Martin Quinson
3309 Let's say it's version 0.0.3 ;)
3310 - Implement conversions (yuhu!)
3311 - Let it work on solaris (beside conversion, of course)
3312 - Stupid me, using rand() to generate the conversion datatests in not wise.
3314 2004-07-06 Martin Quinson
3315 - Let make dist work, since I'm gonna need it to compile on remote hosts
3316 - Let Tests/datadesc_usage write the architecture on which the file was
3317 generated as first byte.
3318 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
3319 architecture descriptions.
3320 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
3321 on those architectures.
3322 - Optimization: send/recv array of scalar in one shoot
3324 2004-07-05 Martin Quinson
3325 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
3327 - Plug a whole bunch of memleaks
3328 - each process now have to call gras_{init,exit}. One day, their log
3329 settings will be separated
3330 - Continue the code factorisation between SG, RL and common in Transport.
3332 2004-07-04 Martin Quinson
3334 - Redistribution between SG and RL.
3335 We wanna have to accept in SG, so move accepted related parts of RL in
3336 the common part. (more precisely, the dynar of all known sockets is no
3337 more a static in transport.c, but part of the process_data)
3339 [gras_stub_generator]
3340 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
3342 2004-07-03 Martin Quinson
3343 - Create a new log channel tbx containing dict, set, log, dynar (to shut
3344 them all up in one shot)
3346 - Fix the ugly case of reference to dynamic array.
3347 - New (semi-public) function gras_datadesc_size to allow the messaging
3348 layer to malloc the needed space for the buffer.
3350 - gras_socket_close now expect the socket to close (and not its address to
3351 put NULL in it after it). This is because the socket passed to handlers
3352 is one of their argument (=> not writable).
3354 - propagate the interface cleanup from last week in datadesc, ie remove a
3355 superfluous level of indirection. User pass adress of variable
3356 containing data (both when sending and receiving), and not of a variable
3357 being a pointer to the data. Let's say that I like it better ;)
3358 The price for that is constructs like "int msg=*(int*)payload" in
3359 handlers, but it's a fine price, IMHO.
3361 - Let it work in RL (yuhu)
3363 2004-06-21 Martin Quinson
3365 - porting SG plugin and SG select to new standards (works almost).
3366 - plug memleaks and fix bugs around.
3369 - cleanup the prototype of data recv and force users to specify when they
3370 want to handle references to objects. Test case working even for cycles.
3371 - plug memleaks. Valgrind is perfectly ok with this.
3373 2004-06-12 Martin Quinson
3375 - cleanup the separation between plugin and main code in plugin creation
3377 2004-06-11 Martin Quinson
3379 - Reput hook for raw sockets, needed for BW experiments
3380 - kill a few lines of dead code
3381 [Data description] Interface cleanup
3382 - gras_datadesc_by_name returns the searched type or NULL.
3383 That way, no variable is needed to use a type desc once, which makes
3385 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
3386 two parameters were strings (field name, type name), leading to
3388 [Dicos] Interface cleanup
3389 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
3390 This is consistant with the dynar API.
3392 2004-04-21 Martin Quinson
3394 - Porting to new standards.
3396 - interface cleanup.
3397 There is no bag anymore, no need to take extra provision to mask the
3398 pointers behind "ID".
3399 Better splitup of functions between files create/exchange/convert.
3400 This is still a bit artificial since convert and receive are so
3401 interleaved, but anyway.
3403 - add a queued message list to procdata (the ones not matching criteria
3405 - factorize some more code between SG and RL wrt procdata
3407 - use gras_exit in example to track memleaks
3408 - get rid of gs_example now that GS is properly integrated into gras
3409 - update run_test to integrate the latest tests (datadesc)
3411 - rename WARNINGn macros to WARNn since it prooved error-prone
3413 2004-04-19 Martin Quinson
3415 - register init/exit functions within gras module mechanism
3416 - send/receive function.
3417 Convertion is not implemented, but short-cutted if not needed.
3418 struct/array elements are sent one by one (instead of block-wise), but
3419 nobody really cares (yet). Get a prototype before optimizing.
3420 - tests (using a file socket) for DD send/receive on:
3421 - base types: int, float
3422 - array: fixed size, string (ie ref to dynamic string)
3423 - structure: homogeneous, heterogeneous
3424 - chained list, graph with cycle
3425 Believe it or not, valgrind is not too unhappy with the results. The
3426 cycle happily segfaults, but the others are ok. And I'm sick of pointers
3430 - Bugfix when using a filename explicitely (instead of '-')
3432 2004-04-09 Martin Quinson
3434 - factorize more code between RL and SG in socket creation
3435 - Complete the implementation and tests of:
3437 o file (only in RL, and mainly for debugging)
3439 I lost 3 days to design a portable address resolver, and then decided
3440 that the prototype mainly have to run on my box.
3441 Addressing portability too early may be like optimizing too early :-/
3443 - use gras_init in the Tests instead of the crappy parse_log_opt
3444 (the latter function is removed)
3445 [Conditional execution]
3446 - New functions: gras_if_RL/gras_if_SG (basic support for this)
3447 [Code reorganisation]
3448 - Get rid of libgrasutils.a since it makes more trouble than it solves.
3449 Build examples against the RL library, since there is no way to disable
3450 its creation for now.
3452 For information, the beginning of coding on GRAS was back in june
3453 2003. I guess that every line has been rewritten at least twice since