1 SimGrid (3.17) UNRELEASED (release target: September 22 2017)
4 - Comm.detach(): start and forget about asynchronous emission
5 - this_actor::send(mailbox) is now mailbox->put()
7 SimGrid (3.16) Released June 22. 2017.
9 The Blooming Spring Release: developments are budding.
12 - FreeBSD: Disable SMPI mmap privatization, switch automatically to dlopen.
13 - Mac, BSD: dlopen+thread broken, switch automatically to raw contexts.
14 - Java JAR file should be finally fully working on Mac OSX too.
16 XML platforms: Switch to platform v4.1 format.
17 * This is (mainly) a backward compatible change: v4 are valid v4.1 files
18 - <zone> can be used as a synonym for the now deprecated <as>
19 - <zoneRoute> can be used as a synonym for the now deprecated <asroute>
20 - <bypassZoneRoute> an be used as a synonym for the now deprecated <bypassAsRoute>
21 - <actor> can be used as a synonym for the now deprecated <process>
22 - state_file and avail_file periodicity is now easier to express
23 (check the documentation) the old behavior should still work.
24 * Storage: not backward compatible, but it seems that nobody ever used it
25 - Remove attribute 'content_type' of <storage_type>: was never used
26 - Make attribute 'model' of <storage_type> optional: for future usage
27 - Remove Bconnection model property: was never (in)validated. Replaced by
28 the maximum of the read and write bandwidth as a resource constraint.
31 - New and Backwards Compatibility break:
32 SD_simulate_with_update (double how_long, xbt_dynar_t changed_tasks_dynar)
33 When one wants to get the list of tasks whose states have changed during a
34 simulation round, s/he has to allocate and free a dynar and use it as
35 argument to this function. The former SD_simulate (double how_long)
39 - Allow multicore VMs, with the correct sharing (unless you overcommit)
40 BUG: vCPU overcommitting still leads to buggy sharing, though. WIP.
43 - New function to update the consumption of all hosts at once.
44 - Fix the model for multi-core hosts, linear in the amount of busy
45 cores with an abnormality for pIdle (see paper).
46 BUG: Still not satisfactory for ptask on mono-cores.
49 - The netzone are now available from the MSG API.
50 The old names still work, but are now deprecated.
53 - New algorithm to privatize globals: dlopen, with dynamic loading tricks
54 - New option: smpi/keep-temps to not cleanup temp files
55 - New option : smpi/shared-malloc-blocksize . Relevant only when global shared
56 mallocs mode is used, allows to change the size of the fake file used
57 (default 1MB), to potentially limit the number of mappings for large runs.
58 - Support for sparse privatized malloc with SMPI_PARTIAL_SHARED_MALLOC()
59 - Fortran ifort and flang compilers support
60 - New RMA calls supported (experimental) :
61 - MPI_Win_allocate, MPI_Win_create_dynamic, MPI_Win_attach
62 - MPI_Win_detach, MPI_Win_set_info, MPI_Win_get_info
63 - MPI_Win_lock_all, MPI_Win_unlock_all, MPI_Win_flush
64 - MPI_Win_flush_local, MPI_Win_flush_all, MPI_Win_flush_local_all
65 - MPI_Op_commutative, MPI_Fetch_and_Op, MPI_Compare_and_swap
66 - MPI_Rput, MPI_Rget, MPI_Raccumulate, MPI_Rget_accumulate
69 - New: this_actor::isMaestro() returns whether we are in kernel mode.
70 - Behind the scene, ActivityImpl are now automatically refcounted.
71 Removing this nasty bottleneck will greatly simplify our internals.
74 - Replay: New function xbt_replay_action_get():
75 Retrieve the function previously associated to an event type.
76 - DROPPED FUNCTION: xbt_str_varsubst()
77 - DROPPED MODULE: strbuff. We don't need it anymore.
78 - DROPPED MODULE: matrix. We don't need it anymore.
79 - DROPPED MODULE: lib. We don't need it anymore.
81 -- Thu Jun 22 22:48:12 CEST 2017 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
83 SimGrid (3.15) Released March 22. 2017
85 The Spring Release: continuous integration servers become green
86 We fixed even the transient bugs on all target architectures:
87 Linux (CentOS, Debian, Ubuntu, Fedora), Mac OSX (Mavericks, El Capitan)
88 Windows, FreeBSD, NetBSD.
90 - Rename NetCards to NetPoints.
91 This was intended to help NS3 users, but that's not a netcard.
92 That's a point in the routing algorithm, let's avoid wrong simplifications.
95 - New: MSG_process_yield(). Stop and yield to other processes.
96 - New: MSG_process_daemon(). Daemon processes are automatically killed
97 when the last non-daemon process terminates
98 - New: MSG_process_ref/unref(). Fiddle with the process refcounting.
99 - Renamed MSG_energy_plugin_init() -> MSG_host_energy_plugin_init()
100 to make room for the upcoming network energy plugin.
101 - Drop MSG_host_get_current_power_peak: duplicates MSG_host_get_speed
104 - Ensure that an actor can kill itself with Process::exit()
105 - Kill the obscure NativeException. Nobody want to survive the issues
106 it denotes, so use JniException that is a RuntimeException (not to
107 be caught explicitly).
108 - Partial bug fix in initialization. SimGrid flags on command line were
109 consumed at C level but stayed in the original Java String[] args.
110 This could mess users' args[i] if SG flags were not put at the end of
112 The SimGrid flags are now removed from the Java arguments. However,
113 the number of arguments REMAINS UNCHANGED. It is then UNSAFE to test
114 if args.length is greater than the number of YOUR OWN ARGUMENTS.
115 It might be if you have --log or --cfg flags in the command line.
116 - Fix numerous memleaks all around the place. In particular, around VMs.
120 - s4u::onPlatformCreated: right before the simulation starts
121 - s4u::onSimulationEnd: right after the main simulation loop
122 - s4u::onTimeAdvance: right after a clock change (time is discrete)
123 - s4u::Host::onSpeedChange: when the pstate is changed, or when an
124 event from the availability_file changes the avail speed.
125 - Links are now usable from s4u
126 - New: Engine::hostList() and Engine::hostCount(). Still clumsy.
127 - New: Actor::suspend(), Actor::resume(), and Actor::migrate(new_host)
128 - New examples: The conversion of MSG examples to S4U has begun
129 - Actors: create, kill, migration, and suspend
130 - Applications: master-worker and token-ring
131 - Action replay: communications and storage
132 - Drop Host::getPstateSpeedCurrent() which duplicates Host::speed()
135 - Backwards Compatibility breaks
136 - The SD_route_get_list and SD_route_get_size functions have been removed.
137 They are replaced by the unique
138 void sg_host_route(sg_host_t src, sg_host_t dst, xbt_dynar_t links)
139 The route from src to dst is built in the links dynar whose size can
140 be obtained with xbt_dynar_length.
141 - The SD_route_bandwidth and SD_route_latency functions have been replaced by
142 sg_host_route_bandwidth and sg_host_route_latency.
143 Macros ensure the backwards compatibility, but you should fix your code
146 - Major C++ rewrite ongoing (SMPI used to be C compiled in C++).
147 This can break codes using SMPI internals (from private.h instead of the public smpi.h).
148 - Bump our claim of support from MPI 1.1 to MPI 2.2.
149 We don't support 100% of it, but it should be enough. Contact us if not.
150 - MPI_Win_lock/unlock, MPI_Get_accumulate support added (as for all RMA, implementation is
151 naive and probably inaccurate)
152 - New algorithm for SMPI_SHARED_MALLOC: global, where all blocks are
153 mapped onto a unique small file using some system magic.
154 - Bugfix: smpirun was sometimes misusing hostfile when wrongly terminated
155 - Fortran: cleanups, fixes, support of user-added operations
156 - RMA: MPI_Accumulate are applied in correct order.
157 - RMA: MPI_Win_{complete/post} shouldn't miss messages anymore.
158 - Better support for MPI_IN_PLACE
159 - Support for MPI_Win attrs and keyvals.
160 - Support MPI_Comm_group_create, MPI_Type_size_x
161 - MPI ops should be properly applied to all allowed types
162 - Replace implementation of MPI_Bcast "scatter followed by rdb allgather"
163 algorithm by a non failing one from mpich.
166 - Kill the fifo data container: we don't use it anymore.
169 - A <cluster> can now be created with different speed values to represent pstates.
170 see examples/platforms/energy_cluster.xml for an example.
172 SimGrid (3.14.159) Released December 28. 2016
174 The previous release was only a crude approximation of a Pi release;
175 this one should be a bit better.
177 - Revert a last minute change that broke on Mac OSX.
178 - Fix the changelog and NEWS files.
179 - Improve the documentation, in particular of the routing module.
180 - Integrate some patches flying around in Debian.
182 SimGrid (3.14) Released December 24. 2016
185 * The whole documentation was reworked and reorganized. There is
186 still much room for improvement here, but we're on it.
189 * We now need python3 for our testing infrastructure.
190 * Model checking needs libevent
193 * Now works on FreeBSD
196 * Privatization now works on FreeBSD
198 * Privatization is now activated by default in smpirun
199 You can turn it off with -no-privatize if something goes wrong.
201 * Call-location tracing for SMPI.
202 You can add the exact location (filename / linenumber) of an MPI call to
203 your trace files and slow down or speed up the simulation between two
204 consecutive calls by using an adjustment file (see the documentation).
206 * Fixed computation of timings for MPI_Send, MPI_Recv & possibly also others
207 We've found a bug that prevented SMPI to account for MPI_Send, MPI_Recv
208 and others (in some cases) in a correct way. That is, the smpi/os, smpi/or
209 values were ignored in some cases. The timings of these functions can now
210 be significantly different.
212 * smpi/cpu-threshold:-1 should become smpi/simulate-computation:no
213 smpi/running-power is renamed to smpi/host-speed
215 * smpi/grow-injected-times option to enable or disable multiplication of the
216 timings injected in MPI_Iprobe, or MPI_Test. Enabled by default, which can
217 make simulation less precise (but also much faster).
219 * smpirun script should be (much) faster for large deployments.
221 * SMPI tracing : fixed issue with poor matching of send/receives.
223 * Replay : Fix broken waitall
225 New functions and features
226 * MSG_parallel_task_execute_with_timeout, to timeout computations.
228 Dropped / renamed functions and features
229 * msg_mailbox_t and associated functions. Use s4u::Mailbox instead.
230 - MSG_mailbox_is_empty() -> Mailbox::empty()
231 - MSG_mailbox_front() -> Mailbox::front()
232 - MSG_mailbox_get_by_alias() -> simgrid::s4u::Mailbox::byName(name)
233 - MSG_mailbox_get_task_ext() -> MSG_task_receive_ext()
234 - MSG_mailbox_get_task_ext_bounded -> MSG_task_receive_ext_bounded
235 - MSG_host_(get/set)_params -> MSG_vm_(get/set)_params
236 * Don't pass the free_f parameter to property related functions:
237 - MSG_host_set_property_value()
238 - MSG_as_router_set_property_value()
239 - MSG_storage_set_property_value()
240 * VM properties. Since msg_vm_t are msg_host_t, just use
241 MSG_host_get_property_value() and friends
242 * VM I/O related things:
243 - Ignored parameter of vm_create: core_nb, disk_path and disk_size.
244 - Unimplemented save/restore methods
245 * MSG_as_router_get_property_value() was redundent with
246 MSG_environment_as_get_property_value().
247 - Removed MSG_as_router_*propert*() functions
248 - Added MSG_environment_as_set_property_value() for consistency
249 * xbt heterogeneous dictionnaries (created with xbt_dict_new()).
250 Well, they are still there for now, but deprecated with a warning.
251 Please switch to xbt_dict_new_homogeneous() before this is removed
253 * Task affinity. Its intended behavior (that was very badly tested
254 and probably not really working) was deceiving what most users
255 would have hoped here.
256 * xbt_os_sem_get_value: unused internally, deprecated on OS X El Capitan
257 * Option network/coordinates is now useless and should be dropped.
260 * Added option storage/max_file_descriptors to allow more than 1024 files opened
263 * Added option maxmin/concurrency_limit to allow more than 100 processes per host
264 * Added Dragonfly topology support
267 * Add Exa- and Peta- units such as EiB, EB, Eib, Eb for size, and
268 EiBps, EBps, Eibps, Ebps for bandwidth.
269 They may become useful to some lucky ones.
272 * New functions: msg.Comm.waitAll() and msg.Comm.waitAny()
273 * ex/app_tokenring: new example, very similar to the MSG Token Ring
274 * ex/async_waitAll: new example, on asynchronous communications
277 * Memory usage should be decreased for simulations with a large number
278 of processes. This also helps for SMPI.
280 SimGrid (3.13) stable; urgency=low
282 The Half Release, a.k.a. the Zealous Easter Trim.
284 - We removed half of the lines, that were mostly experimental cruft.
285 v3.12 lasted 286000 lines of code, v3.13 is only 142000 lines
286 (not counting blanks and comments -- according to openhub.net)
287 - The internals are now compiled in C++ (and will soon be clean C++)
288 - We removed 75 klines of XML, 12 klines of Java, 5 klines of cmake,
289 59 klines of C, etc. We added only 29 klines of C++ in replacement.
291 * Backwards Compatibility breaks
292 - Removed Lua simulation bindings (switch to C or Java for that).
293 Lua can still be used to describe platforms
294 - Removed Java kernel plug-ins.
295 Will be reintroduced after the ongoing major internals reorg.
297 - the following functions were removed.
298 They were too specific and should be reimplemented in a generic
299 way, with filter function.
300 - MSG_task_listen_from_host
301 - MSG_mailbox_get_count_host_waiting_tasks
302 - MSG_mailbox_put_with_timeout was removed.
303 Please use MSG_task_send_with_timeout instead.
305 - the SD_application_reinit function was removed. It has been a noop for a while.
306 - The ACCESS_MODE of SD_workstation has been removed. This feature was not really usable and should soon be
307 replaced by a more flexible mechanism.
308 - The following functions thus do not exist anymore
309 - SD_workstation_get_access_mode
310 - SD_workstation_set_access_mode
311 - SD_workstation_get_current_task
312 - Basic estimation functions have been removed but can easily be replaced
313 - SD_route_get_communication_time => SG_route_get_latency() + amount / SD_route_get_bandwidth()
314 - SD_workstation_get_computation_time => amount / sg_host_speed()
316 - VM.setBound(int load) is now VM.setBound(double bound) to meet the MSG semantics.
317 Use VM.getSpeed()*load/100 for the legacy behavior.
319 - option enable_tracing was removed. It was not doing anything for a while.
320 - In the ModelChecker:
321 - the model-checker now ptraces the model-checked process which means
322 you cannot use a debugger on the latter anymore (we might make this
323 optional in the feature);
324 - removed soft-dirty page tracking;
325 - remove model-checked side snapshot management,
326 MC_snapshot() and MC_compare_snapshot();
327 - keep the MC_cut() function as a stub (it was not really working
328 in the previous release).
331 * All options are consistently in kebab-case. Old names are kept as alias.
334 * Switch to platform v4 format.
335 - Rename from 'power' to 'speed' the attributes describing the amount of
336 flops that a <host>, <peer>, <cluster> or <cabinet> can deliver per second.
337 - In <trace_connect>, attribute kind="POWER" is now kind="SPEED".
338 - In <host> and <link>, attributes availability and state are gone.
339 It was redundent with state and availability traces, and with peak values.
340 - In <cluster>, attributes availability_file and state_file are gone.
341 It was too complex and unused.
342 - Kill <gpu>. Was not doing anything.
343 - The DOCTYPE points to the right URL:
344 http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd
345 (the file at this address now documents the changelog since its v1)
346 - A warning is emitted for unit-less values (they are still accepted).
347 - speed. Default: 'f' or 'flops'. Also defined:
348 'Yf', 'Zf', 'Ef', 'Pf', 'Tf', 'Gf', 'Mf', 'kf'
349 'yottaflops', 'zettaflops', 'exaflops', 'petaflops', 'teraflops', 'gigaflops', 'megaflops', 'kiloflops'
350 - bandwidth. Default: 'Bps' bytes per second (or 'bps' for bits but 1 Bps = 8 bps)
351 Also defined in bytes: 'TiBps', 'GiBps', 'MiBps', 'KiBps', 'TBps', 'GBps', 'MBps', 'kBps', 'Bps'
352 And the same in bits: 'Tibps', 'Gibps', 'Mibps', 'Kibps', 'Tbps', 'Gbps', 'Mbps', 'kbps', 'bps'
353 - latency. Default: 's' second. Also defined:
354 'w' week, 'd' day, 'h' hour, 'm' minute, 'ms' millisecond, 'us' microsecond, 'ns' nanosecond, 'ps' picosecond
356 * bin/simgrid_update_xml can upgrade your files automatically (won't convert unit-less values)
357 tools/sg_xml_unit_converter.py may help (but it's just a warning and will probably ever be).
360 * s4u::Host is now the preferred public interface to the Host features.
361 sg_host_* functions are C bindings to the exact same behavior
362 MSG_host_* and SD_workstation_* are #define to the sg_host_* ones
365 * The examples were completely reorganized (in C and Java), for your browsing pleasure.
366 * Kill all deprecated functions (the ones you had when declaring MSG_DEPRECATED).
367 They were deprecated since a few years, and probably did not even compile anymore.
370 * The API has been profoundly modified to directly use the core objects instead of redefining its own.
371 SD_Workstation_t and SD_link_t are now sg_host_t and sg_link_t respectively.
372 Some functions have also been renamed for consistency. Backward compatibility is maintained, but users are
373 encouraged to update their codes. A list of the modified functions can be found at the end of
374 include/simgrid/simdag.h
377 * simgrid::simix::kernelImmediate() is the closure callback. It ensures that
378 the lambda or closure passed as a parameter will run in kernel mode.
379 All the callback functions should be rewritten to that interface at some point.
382 * Reorganizing and cleaning the internals all around the place.
385 * Remove old default barrier/bcast buggy algorithms (see #18407)
386 * Various bug fixes to handle more codes
387 * Remove the need for the --foreground option of smpirun (it is still
388 accepted for backward compatibility).
391 * Kill the setset data container: MC don't use it anymore.
392 * Kill the queue data container: it made more sense with GRAS.
393 * Kill the xbt_peer_t data type: it's useless without GRAS.
394 * Kill rm_cb feature of config sets: it was never useful.
395 * Kill graphxml parsing feature. It was not used.
396 * Kill the deprecated code protected by XBT_USE_DEPRECATED
398 - xbt_dynar_sort_strings(), when the content is char*
399 - xbt_str_parse_int / xbt_str_parse_double, wrapping strtol/strtod
400 They throw exceptions on invalid input;
401 * C++ support for declaring CLI flags (simgrid::config::Flag);
402 * class for abstracting different signal backends (simgrid::xbt::signal).
403 with no external dependencies (we need very simple signals).
406 * refactoring and cleanup of the code;
407 * ongoing process to cleanly separate the model-checking algorithms
408 from the code model-checking support.
410 -- Wed Apr 27 21:00:53 CEST 2016 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
412 SimGrid (3.12) stable; urgency=low
414 The Facelift Release.
417 * Require g++ v4.7 at least to not speak prehistorical C++.
418 * Require Boost 1.48 (for signal2 component).
419 * Java must be version 7 at least when activated.
420 * Builds on Windows again (including Java bindings).
421 * Tracing is now always enabled (no way to turn it out)
422 * Remove GTNetS. It was not working anyway.
423 * Various cleanups in the cmake scripts.
424 * Move headers around to sort them out on installed systems:
425 - instr/instr.h -> simgrid/instr.h
426 - instr/jedule/* -> simgrid/jedule
427 - simdag/datatypes.h was removed
428 - simdag/simdag.h -> simgrid/simdag.h
429 - msg/datatypes.h was removed
430 - msg/msg.h -> simgrid/msg.h
433 * Interface improvement:
434 - Rename MSG_host_is_avail(h) to MSG_host_is_on(h)
435 - Sanitize the interface in MSG_task_ module:
436 - Merge two functions that were close enough but misleading:
437 set_compute_duration(t) -> set_flops_amount(t)
438 get_remaining_computation(t) -> get_flops_amount(t)
439 - set_data_size(t) -> set_bytes_amount(t)
440 get_data_size(t) -> get_bytes_amount(t)
441 - Massive cleanups in the functions related to the energy
442 - MSG_host_get_pstate_number() -> MSG_host_get_nb_pstates()
443 - New: MSG_host_get_pstate()
445 - msg/energy/onoff: switching hosts on and off
447 * Interface improvement:
448 - Rename Host.isAvail() to Host.isOn()
449 - Rename Process.currentProcess() to Process.getCurrentProcess()
450 - Rename Task.setDataSize() to Task.setBytesAmount()
451 - Merge Task.getRemainingDuration() and Task.getComputeDuration() into Task.getFlopsAmount()
453 - #18874: Actually allows the GC to reclaim tasks
457 - SIMIX_process_throw: raises an exception in a remote process
458 * Refactoring: Separate sub-modules
459 - libsmx: the public interface, as libc in a real system
460 - popping: the strange dance that converts a user request into a kernel handling
461 - smx_context_*: the virtualization mechanisms that embed the user code
462 - smx_*: the handling of each simcalls
464 - simcall_host_set_power_peak_at -> simcall_host_set_pstate
465 * Rename smx_action_t into smx_synchro_t, making explicit that these
466 things are used to synchronize processes with their environment.
467 For example, a communication is a sort of synchronization involving
468 the communicating processes (that may block until the exchange) and
469 the platform. The same can be said from computations, etc.
471 - #18888: segfault when a process ends before its kill_time
475 - 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.
476 - MPI_Keyval*, MPI_Attr* functions, as well as MPI_Comm_attr*, MPI_Type_attr* variants (C only, no Fortran support yet)
477 - MPI_Type_set_name, MPI_Type_get_name
478 - MPI_*_c2f and MPI_*_f2c functions
479 - MPI_Info_* functions (beware, get_nthkey may not follow the insertion order)
480 - MPI_Pack, MPI_Unpack and MPI_Pack_size functions
481 - Activate a lot of new tests from the mpich 3 testsuite
483 - Constant times can be injected inside MPI_Wtime and MPI_Test through options smpi/wtime and smpi/test
484 - InfiniBand network model added : Based on the works of Jerome Vienne
485 http://mescal.imag.fr/membres/jean-marc.vincent/index.html/PhD/Vienne.pdf
486 - When smpi/display_timing is set, also display global simulation time and application times
487 - Have smpirun, smpicc and friends display the simgrid git hash version on --git-version
488 * Collective communications
489 - 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
490 - 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/).
491 - Support for Rabenseifner Reduce/Allreduce algorithms (https://fs.hlrs.de/projects/par/mpi//myreduce.html)
493 - Replay now uses algorithms from wanted collective selector
494 - Replay can be used with SMP-aware algorithms
495 - Memory occupation of replay should now be contained (temporary buffers allocated in collective algorithms should be shared between processes)
496 - 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.
498 - [#17799] : have mpi_group_range_incl and mpi_group_range_excl better test some corner cases
499 - Correctly use loopback on fat-tree clusters
500 - Asynchronous small messages shouldn't trigger deadlocks anymore
501 * Energy/DVFS cleanup and improvement
502 - smpi_set_host_power_peak_at() -> smpi_set_host_pstate()
503 - new: smpi_get_host_pstate()
506 - "Full" network optimization flag was broken since Surf++
507 - Better handling of precision flags in maxmin
508 - Fix bug causing sometimes "Impossible" errors
509 - Properly pass cluster properties to included hosts
510 * Improvement of the Energy plugin.
511 - Always update the consumption before returning that value
512 - New property: watt_off to denote the dissipation when the host is off
513 - New functions getWattMinAt and getWattMaxAt to retrieve the
514 dissipation of pstates that we are not currently at.
515 * Java: class NetworkLink renamed to Link
516 * New function: simcall_process_get_kill_time()
517 * Massive rename s/workstation/host/
518 - That's intrusive, but that's good for the project consistency. Sorry.
519 - Change config option "workstation/model" into "host/model"
522 - Add a xbt_heap_update function, to avoid costly xbt_heap_remove+xbt_heap_insert use
523 - Add a xbt wrapper for simcall_mutex_trylock (asked in [#17878])
524 - Add two new log appenders : rollfile and splitfile. Patch by Fabien Chaix.
525 - xbt_dirname and xbt_basename for non-POSIX systems
527 * The model checker now runs as a separate process.
528 * The model checker runs must now be launched with the new simgrid-mc program.
529 * Record/Replay: the MC can display a textual representation of a path in the
530 execution graph. It can then be replayed outside of the model checker.
532 -- Mon Oct 12 06:02:41 CEST 2015 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
534 SimGrid (3.11) stable; urgency=low
539 * Normalizing pointers addresses tool for better diff between logs
542 * Add cloud examples using new VMs
543 - examples/msg/cloud/two_tasks_vm.tesh
544 - examples/msg/cloud/simple_vm.tesh
545 - examples/java/cloud/cloud.tesh
546 - examples/java/cloud/migration/migration.tesh
547 * Add java surf examples:
548 - examples/java/surfPlugin/surf_plugin.tesh
549 - examples/java/reservationSurfPlugin/reservation_surf_plugin.tes
550 - examples/java/surfCpuModel/surf_cpu_model.tesh
551 * Add SMPI+MSG example:
552 - examples/smpi/smpi_msg_masterslave/
557 - msg task destroy cancel test
558 - msg_host on/off test
559 * Move all tests in testsuite to teshsuite (adding tesh files)
560 * Restructure teshsuites
561 - one folder for each kind of test
562 * Restructure AddTests.cmake
564 - structure the order of tests (with sections)
567 * Add virtual machine
568 - creation of a VM on a PM
569 - migration of a VM from a PM to another PM
571 - MSG_process_join(msg_process_t process, double timeout)
572 - msg_bar_t MSG_barrier_init(unsigned int count)
573 - int MSG_barrier_wait(msg_bar_t barrier)
574 - void MSG_barrier_destroy(msg_bar_t barrier)
575 - msg_as_t MSG_environment_as_get_by_name(const char * name)
576 * New option "msg/debug_multiple_use" to help debugging when a task is used
579 - Improvements and finalization of MSG_storage, MSG_file APIs and their
581 - Increase code coverage in test suites
585 * Protect context stacks against stack overflow. The number of protected memory
586 pages allocated on the top of each stack (1 by default) can be configured
587 with the new command line option --cfg=contexts/guard_size:<value>.
588 * Simcalls are now generated by a python script that
589 - generates files included by SimGrid
590 - checks that all the functions exist, and proposes prototypes
592 - remove sem_destroy, file_set_data, comm_destroy, vm_set_state,
593 host_set_data, host_get_data
595 - simcall_process_join(smx_process_t process, double timeout)
596 * Fix bug where sleeping processing could not be suspended.
599 * Translate surf models from C to C++
600 - Generic classes for all models: Model, Resource, Action
601 - A generic interface for each kind of model (CPU, Network, Storage
602 Workstation, WorkstationVM)
604 * Translate surf routings from C to C++
605 * Add callbacks using sigc++ or boost::signals2
606 - Add callback functions for resource creation/destruction
607 - Add callback functions for action state change
608 - Handle Energy as a plugin
609 * Replace swag by boost::intrusive
610 * Add new routing models for clusters. For documentation, see
611 http://simgrid.gforge.inria.fr/simgrid/latest/doc/platform.html#pf_cluster
612 - tori, with topology="TORUS" and topo_parameters="ndim1,ndim2,...,ndimn"
613 parameters for cluster tag
614 - Fat trees, with topology="FAT_TREE" and
615 topo_parameters="h;m1,...,mh;w1,...,wh;p1,...,ph" parameters for cluster tag
616 - see examples/platforms/torus_cluster.xml and
617 examples/platforms/fat_tree_cluster.xml
621 * Hostfiles support host:nb_processes construct to deploy several processes on
623 * Collective communication algorithms should not crash if used with
624 improper number of nodes and report the error.
625 * SMPI now partially supports MPI_Topologies : MPI_Cart_create, MPI_Cart_shift,
626 MPI_Cart_rank, MPI_Cart_get, MPI_Cart_coords, MPI_Cartdim_get,
627 MPI_Dims_create, MPI_Cart_sub are supported.
628 * New interface to use SMPI programmatically (still depends on MSG for
629 some parts, see examples/smpi/smpi_msg_masterslave) :
630 - SMPI_app_instance_register(const char *name, xbt_main_func_t code,
634 * Global variables privatization in MPI executables is now performed at runtime
635 with the option smpi/privatize_global_variables (default:no).
636 Limitations : Linux/BSD only, with mmap enabled. Global variables inside
637 dynamic libraries loaded by the application are not privatized (static
638 linking with these libraries is advised in this case)
641 * Options defined in XML work correctly now.
644 * New cmake option, enable_lib_in_jar, to control whether native libraries are
645 copied into simgrid.jar or not (ON by default). Use this option if you want
646 to reduce the size of the installed simgrid.jar, *and* the native libraries
647 are kept installed elsewhere.
648 * Surf binding with SWIG (code generated in maintainer mode only):
649 - plugin to handle callbacks
650 - CPU model only for the moment
653 * Supernovae build mode is definitively removed. It was used to improve
654 inlining and inter-module optimizations. It is nowadays superseded by
655 link-time optimizations commonly available in compilers.
656 * Update ns-3 find lib. Bindings for ns-3 should work again now.
657 * Add boost dependency for surf++
658 * Add new macro for tests
659 - ADD_TESH(name <tesh_args>)
660 - ADD_TESH_FACTORIES(name "thread;ucontext;raw" <tesh_args>)
664 - xbt_bar_t XBT_barrier_init(unsigned int count)
665 - int XBT_barrier_wait(xbt_bar_t barrier)
666 - void XBT_barrier_destroy(xbt_bar_t barrier)
667 * Make the xbt_os_time module public
669 -- Sat May 31 22:39:38 CEST 2014 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
671 SimGrid (3.10) stable; urgency=low
673 The Clean Diaper Release, a.k.a. SimGrid is leak-free.
676 * Reintegrate Java to the main archive as desynchronizing these
677 package is not acceptable anymore (Java is now considered stable)
678 * Add explicit synchronization facilities through semaphores
679 * Bug fix: Task.setDataSize() only changed the C world, not the value
680 cached in the Java world
683 * Dramatically change the way files are handled. API and internals changed, but
684 this part of MSG was not considered as production grade either.
685 * Add explicit synchronization facilities through semaphores
686 * Add a new function MSG_host_get_process_list()
687 * Preliminary DVFS support (see examples/msg/energy/ for details)
690 * SMPI is now included directly in the libsimgrid as the windows
691 linker doesn't force us on splitting it anymore.
692 * Improvements of the SMPI replay tool:
693 - Most of the collective communications are now rooted in the same process as
694 in the original application.
695 - Traces now rely on the same MPI data type as the application (MPI_BYTE was
696 used until now). Multiple data types can now be used in a trace.
697 - The replay tool now supports traces produce either by TAU or a modified
699 - Bug Fix: the compute part of the reduce action is now taken into account.
700 - Gatherv collective is now supported
701 - SimGrid (SMPI for now) can generate replay traces as well. Option -trace-ti
702 of smpirun outputs time independent traces for the current run. One file
703 is created per process. If too many processes are simulated, this behavior
704 can be changed to one file for all processes by using the
705 tracing/smpi/format/ti_one_file flag
706 * smpirun generates the host file if needed (with given host count and platform)
707 * Integration of more than 100 STAR-MPI, MPICH, OpenMPI collective algorithms
708 - allows to select one in particular with --cfg=smpi/coll_name:algorithm
709 - allows to use the decision logic of OpenMPI(1.7) or MPICH(3.0.4) by setting
710 --cfg=smpi/coll_selector:(mpich/ompi)
711 * Support for new functions : MPI_Issend, MPI_Ssend, Commutative operations in
713 * Add a --cfg:tracing/smpi/internals option, to trace internal communications
714 happening inside a collective SMPI call.
715 * Fix the behavior of complex data types handling.
716 * Make MPI_Wtime another synchronization point to take computations into
718 * Replace MPICH-1 test suite by the one from MPICH 3.0.4. Can be built using
719 enable_smpi_MPICH3_testsuite flag in cmake. Run with ctest.
720 * Add all missing Fortran bindings, SMPI should work with Fortran 90
721 (no privatization of global variables yet)
722 * Preliminary DVFS support (see examples/smpi/energy/ for details)
725 * Verification of liveness properties is now available for SMPI applications
726 (in addition to MSG applications)
727 * Bugged examples using SMPI in examples/smpi/mc/
728 * Add --cfg=model-check/visited option. Allows the verification of infinite
729 programs. Detection of loops in the execution thanks to the system state
730 comparison and reduction of the state space to explore. Can be combined with
731 DPOR for safety properties.
734 * Allow to change SimGrid configuration (see --help) within the code
735 thanks to SD_config() as it can be done in MSG.
736 * Add a new function SD_task_set_amount() upon user request.
739 * Handle units for values (10ms, 10kiloflops, 10Bps, 1GB, ...)
740 * Remove rule based routing (no more PCRE dependency)
741 * Add a limiter_link option to cluster tag, to specify a maximum reachable
742 bandwidth in fullduplex mode when it is less than twice the nominal bandwidth.
743 * Add a loopback_bw and loopback_lat options to cluster tag.
744 * Fix the peer tag that could not be mixed with other AS within a Vivaldi
745 routing. Now peers are encapsulated in an AS and have their own private
746 router but this is transparent.
749 * Our own implementation of getline is renamed xbt_getline, and gets
750 used even if the OS provide a getline(). This should reduce the
751 configuration complexity by using the same code on all platforms.
752 * New type: xbt_cfg_elm_boolean.
753 * Allow to use yes/no for boolean configuration options in the command line.
754 * Allow to disable SimGrid cleanups at exit from command line option.
755 There are situations where one may want a simulation to end with an exit.
756 Unfortunately, calling exit may cause SimGrid to segfault, which is quite
757 annoying when scripting around the simulator. Adding a
758 --cfg=clean_atexit:no allows to circumvent this issue.
761 * Lots of memory leaks were corrected in this release.
762 There is no known memory leaks anymore, in all of our 600+ tests.
763 * New command line option --version, to get SimGrid version information.
764 Packagers may want to add extra words to SIMGRID_VERSION_EXTRA defined in
766 * Supernovae builds are deprecated, and expected to be removed in the next
769 -- Sun Nov 17 00:26:44 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
771 SimGrid (3.9) stable; urgency=low
773 The Grasgory release: GRAS is really dead now.
775 * Complete overhaul of the internal host structures scheme.
778 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
779 was considered as experimental and badly maintained since then.
780 * Keeping it was thus a trap to our potential users, that could take
781 it instead of MSG or SMPI by mistake despite is pity state.
782 * GRAS seems to have very few users (if any), and no one volunteered
783 to maintain it further. It also induces a lot of XBT code (for
784 portability sake), that must be maintained too.
785 * For all these reasons, we killed GRAS. If someone wants to revive it
786 in the future, don't cry, our git history still remembers of GRAS.
789 * Major overhaul. Merge our documentation again as time proved that
790 splitting it was really not helping our users.
791 * Further improve the developer documentation to help newcomers
792 hacking on SimGrid itself. The user documentation (and in
793 particular, the beginner documentation) is still in a sorry state.
796 * Now works on Windows too!
797 * Much more extensive test suite, from MPICH
800 * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
801 (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
802 dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
803 * Bug fix: let task be scheduled when the last dependency to be solved is
804 a control dependency.
805 * Remove SD_load_environment_script function.
806 Use the C sg_platf function if you want to declare a platform
810 * New function: MSG_process_get_number()
811 * Old function documented: MSG_config()
812 * Remove MSG_load_platform_script function
813 Use the C sg_platf function if you want to declare a platform
817 * Change the default value of the TCP_gamma constant (maximal size of TCP
818 congestion window) to a more realistic 4MiB value. If you notice changes in
819 your simulation results, you can fall back to the previous 20k tiny window
820 by adding --cfg=network/TCP_gamma:20000 on command line.
821 * (Hopefully) fix a bug wrt periodic availability and state traces
822 * Bug fix: use default values at start when first event in availability/state
823 trace is not at time 0.
826 * remove the "new_" part of function name sg_platf_new_trace_connect
827 (resulting in sg_platf_trace_connect), since it does not create
831 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
832 use case where it's really mandatory, and maintaining it was a pain in
834 * New: xbt_fifo_search(), search an item with a user-provided
835 comparison function instead of dumb pointer comparison.
838 * Fix the lua deployment:
839 Use `simgrid.init_application()` before deployment instead of
840 `simgrid.msg_register_application()` after.
843 * Transfer the tracing files into the corresponding modules.
845 -- Tue Feb 5 11:31:43 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
847 SimGrid (3.8.1) stable; urgency=low
849 The "we are told that some people want to also *install* the simgrid
852 * Add missing file "tesh.1" to the archive.
854 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
856 SimGrid (3.8) stable; urgency=low
858 The Psssshiiiit release: SimGrid jumps into the Cloud.
861 * Add an experimental interface to manipulate VMs. They are mainly
862 process groups with very few intrinsic semantic, but they should
863 allow you to build the semantic you want easily.
864 * New function: MSG_host_set_property_value()
865 * New function: MSG_process_on_exit(). To clean memory in all cases.
866 * Bug fixes that made the host (and link) failures unusable.
867 * Add a way to auto-restart process when the host in which they are
868 executing comes back (ON_FAILURE="RESTART" on deployment file,
869 MSG_process_auto_restart_set).
870 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
871 please stop using the old ones, they are DEPRECATED.
873 * Deprecate functions MSG_global_init() / MSG_global_init_args()
874 Please use MSG_init() instead. (reducing the amount of entry
875 points in the library helps us).
876 * Make it impossible to link against the wrong version of the lib
877 * Deprecate MSG_clean(). No need to call it anymore.
878 * Function MSG_get_host_number() is not deprecated anymore.
881 * Split the doc into a user guide and a reference guide.
882 * Start a developper guide to help people hacking on SimGrid.
885 * Enable tracing by default. This modules rocks you should use it.
886 * Remove option custom_flags. Now use environment variables CFLAGS
888 * Use default cmake things to detect lua instead of home grown ones.
889 * New option "enable_mallocators" to disable mallocators, for debugging
890 purpose ("on" by default).
893 * Bug fixes around the resource failures: don't let the processes
894 survive the host they are running onto.
895 * Add an interface to auto-restart processes when the host in which they are
896 executing comes back.
897 * Ensures that SIMIX_clean is called automatically. It's not part of
898 the public interface anymore (bindings should be updated).
901 * Bug fix for when SD_Simulate is called with a positive value: be careful
902 when comparing doubles. Sometimes they are different for non significant
904 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
905 parallel task whose initial work is distributed among host according
906 to the Amdahl's law. Such tasks are created with a parameter alpha
907 that corresponds to the non-parallelizable part of the computation.
908 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
909 between two sets of workstations assuming a 1D block distribution (each
910 workstation owns a similar share of data) on both sides.
912 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
913 Data redistribution will be automatically scheduled once parent and child
914 are both scheduled. The filling of computation_amount and
915 communication_amount structures is now done seamlessly thanks to the chosen
917 * New function SD_workstation_dump to display various information
918 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
919 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
920 bandwidth on the route onto which the task is scheduled and the amount of
922 To divide the nominal bandwidth by 2, the rate then has to be :
923 rate = bandwidth/(2*amount)
924 * Compute tasks that have failed can now be rescheduled and executed again
925 (from their beginning)
926 * Increasing source code coverage (src/simdag is now covered at 95.8%
930 * Re-implement time-independent trace replay using SMPI (at the
931 smpi_smp_* level) instead of MSG. This should replace
932 examples/msg/actions/actions.c
933 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
934 hindexed and structs)
935 * Implement the exchange of non-contiguous data.
936 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
937 * Correct behavior of smpi/sender_gap and set its default value to 0
938 * Add option to asynchronously send small messages to allow better
939 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
940 specifies the size in bytes under which messages will be asynchronously sent.
941 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
942 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
945 * New C interface to define a platform: XML is now optional.
946 For more info, please check include/simgrid/platf.h.
947 * New interface to define random platforms from the C:
948 For more info, please check include/simgrid/platf_generator.h and
949 examples/msg/masterslave/masterslave_platfgen.c
950 * Export a sg_cmdline dynar containing all the arguments we got from
954 * Two new tracing options for adding comments to trace file so you
955 can track your experiments (see --help-tracing for details).
956 * New option to generate a impoverished trace file (--cfg=tracing/basic:1)
957 * Adding the SimGrid version that generated the trace file as a comment.
958 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
959 * Fix to avoid key clashes on Paje links
960 * Other minor fixes related to the Paje specification
963 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
964 and renamed to xbt_str_hash() and xbt_str_hash_ext().
965 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
966 * Greatly improve the robustness of mmalloc to user errors (such as
967 using an area after freeing it, or freeing it twice)
969 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
971 SimGrid-java (3.8.1) stable; urgency=low
973 * New module: org.simgrid.trace.Trace (SimGrid trace bindings)
974 Warning: all methods are visible, but only some of them are
975 implemented so far. Check the source (src/jtrace.c)
976 for further information.
977 * New module: org.simgrid.msg.File (SimGrid File management functions)
978 * New Module: org.simgrid.msg.VM (SimGrid interface to mimick IAAS clouds)
979 * Change the meaning of Process.restart: now restart the process from
980 the begining, like MSG_process_restart in C.
981 * Add Process.setAutoRestart: handling of process restart when failed
983 * Add Process.getProperty, Host.getProperty, Host.getProperty: allows
984 you to retrieve the properties of the processes/hosts
985 * Deprecate Msg.clean(): you can just forget about it now.
986 * New function Process.getCount(), that only works when compiling
987 with the not yet released version 3.9 of the C library.
989 * New context factory based on Coroutines. It mandates a modified JVM
990 but then, the simulations run about five times faster, and there is
991 no limit to the amount of processes (beside of the available memory).
993 -- 2012-12-04 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
995 SimGrid (3.7.1) stable; urgency=low
998 * Restore the prototype of MSG_process_create_with_environment() to
999 the pre-3.7 situation by removing the kill_time argument.
1000 * Add a MSG_process_set_kill_time() function instead.
1003 * Fix weird behaviors when dealing with parallel tasks.
1006 * Simgrid is now built as a dll.
1007 * Simgrid-java now works on Windows.
1008 * Simgrid-Java is now included into Windows package.
1011 * First pre-build package for MacOSX.
1014 * Fix compilation when using MSG_USE_DEPRECATED.
1015 * Fix some compilation issues on Macs and Windows.
1016 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
1017 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
1019 We discovered that the Lua console is broken, but we are missing the
1020 manpower to fix it right now. The problem existed in 3.7 too, so we
1021 are not blocking the release for that. Sorry if you depended on this
1022 feature, any help would be really welcome.
1024 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1027 SimGrid-java (3.7.1) stable; urgency=low
1029 The "Java aint got to be bloated and slow" release
1032 * Various internal cleanups and performance improvement
1033 Simulations are expected to run up to twice faster or so
1034 * Make Process.kill(process) an instance method, not a static one
1035 * User processes are not java.lang.Thread subclasses.
1036 This breaks the compatibility (sorry), but previous API was
1037 brain-dead, making it impossible to have non-trivial
1038 initializations in the process constructor.
1039 * Require a full constructor per Process sub-class.
1040 Kinda breaks the compatibility (sorry), but this allows a much more
1041 efficient way to launch the processes at simulation startup.
1042 * Do not embeed our version of semaphores, java 1.5 can be considered
1043 as sufficiently prevalent for us to not dupplicate its features.
1047 * Add examples for almost every part of the API
1048 We spotted and fixed a lot of bugs in the process
1050 * New module: asynchronous communication API
1051 * New function: Process.sleep()
1052 It takes milliseconds as argument, just as java.lang.Thread.sleep()
1053 * New module: org.simgrid.msg.Mutex (SimGrid mutexes)
1054 * New module: org.simgrid.msg.RngStream (RngStreams random generators)
1056 -- 2012-06-12 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1058 SimGrid (3.7) stable; urgency=low
1060 The "spring cleanups (before the next Big Project kicks in)" release.
1063 * We can specify the SMPI latency/bandwidth factor with command line
1064 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
1065 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
1066 You can also use the "config tag" from platform file by adding this line
1067 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
1068 (see "example/platforms/tag_config.xml" to use "config tag").
1069 Note that the command line supersedes the platform file configuration.
1070 * Change the correction factors used in LMM model, according to
1071 the latest experiments described in INRIA RR-7821.
1072 Accuracy should be improved this way.
1073 * Use the partial invalidation optimization by default for the
1074 network too. Should produce the exact same results, only faster.
1075 * Major cleanup in surf to merge models and split some optimization
1076 mechanisms from the core of the models. As a result you can now
1077 specify which model to use (e.g., --cfg=network/model:LV08
1078 --cfg=cpu/model:Cas01) and which optimization mode to use
1079 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
1080 Incompatible combinations should err at initialization. See
1081 --help-models for the list of all models and optimization modes.
1082 * The CLM03 workstation model was dropped for simplicity because it
1083 used the deprecated CM02 network model. Use default instead.
1084 * Rename the TCP_gamma configuration option to network/TCP_gamma
1085 * Rename the coordinates configuration option to
1086 network/coordinates, and document it
1087 * Use now crosstraffic keyword instead of the terribly misleading
1088 fullduplex keyword. It is activated by default now in the current
1089 default model, use --cfg=network/crosstraffic:0 to turn it off.
1090 * Ongoing refactoring the model parsing to make XML files optional
1091 See include/simgrid/platf.h for details (still to be completed)
1094 * Major overhaul of the documentation. Almost instructive now :/
1095 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
1096 functions and friends. This interface was considered as
1097 deprecated since over 2 years, it's time to inform our users that it is.
1098 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
1099 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
1100 use these (crappy) functions in your code.
1101 These functions will be removed soon. Stop using them now.
1102 * Deprecate MSG_get_host_{table,number}
1103 Implement MSG_hosts_as_dynar() instead.
1104 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
1105 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
1108 * Stabilize the parallel execution mode of user contexts
1109 * Introduce configuration variables to control parallel execution:
1110 - contexts/synchro: Synchronization mode to use when running
1111 contexts in parallel (either futex, posix or busy_wait)
1112 - contexts/parallel_threshold: Minimal number of user contexts
1113 that must be part of a scheduling round to switch to parallel
1114 execution mode (raw contexts only)
1115 * Fix bugs that prevented to use suspend/resume along with
1116 synchronization structures.
1117 * Fix bugs in process termination that lead to invalid memory access
1118 in very specific conditions.
1121 * Introduce a parallel mode for the models (controlled by surf/nthreads
1122 configuration item). In our tests, running the models in parallel
1123 never lead to any speedups because they are so fast that the gain
1124 of computing each model in parallel does not amortizes the
1125 synchronization costs, even when ultra fast futexes are used.
1126 This is released anyway because YMMV.
1129 * Performance boost by using a swag internally to compute the set of
1130 tasks that are finished and should constitute the return value of
1134 * Enable it by default now that it is considered rather stable.
1137 * Documentation of the tracing functions.
1138 * Performance gains when tracing categorized/uncategorized resource
1139 utilization by avoiding calls to get route when updating resource
1140 variables. LMM constraints are being used instead.
1141 * API changed to set task categories. Use MSG_task_set_category instead
1142 of TRACE_msg_set_task_category, and SD_task_set_category instead
1143 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
1144 * Bugfix for graphicator, routes not correctly obtained, memory leaks
1145 * Examples for link user variables added (see at examples/msg/tracing/)
1146 * Deprecated function TRACE_msg_set_process_category completely removed
1147 * Trace header updated according to the latest Paje file format
1148 * Tracing network lazy updates, no longer obligate users to use full updates
1149 * --cfg=tracing/platform:1 also registers power/bandwidth variables
1150 * Experimental: let user code declare/set/push/pop application states for hosts
1151 * API changed to allow the manual creation of graph configuration files
1152 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
1155 * Improve the API of Lua MSG bindings, using the Lua spirit.
1156 * Each simulated process now lives in its own Lua world (globals are
1157 automatically duplicated). It helps writing simulators. Will allow
1158 to run Splay programs within SimGrid in the future.
1159 * Add a Chord example in Lua, equivalent to the MSG one.
1162 * Start the implementation of a solution to express temporal
1163 properties, not only local assertions. This is still an
1164 experimental work in progress, stay clear from it to be safe.
1168 - Add new runtime parameters --help-logs and --help-log-categories
1169 to display information about supported logging parameters and
1171 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
1172 don't exists anymore.
1173 * Mallocators: allow value NULL for the reset function.
1175 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
1176 create homogeneous dictionaries, where all the elements share the
1177 same free function. Non homogeneous dictionaries will be
1178 deprecated in the next release.
1179 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
1180 - Multi-level dictionaries are deprecated.
1182 - new function xbt_dynar_search_or_negative() that is useful when
1183 you have less than 2 million elements in your dynar and don't
1184 want of the extra complexity of catching exceptions when the
1185 element is not found.
1187 - Make xbt_os_thread module (for thread portability) public.
1188 Documentation is still to come, sorry.
1190 - Cleanups and simplifications to make it maintainable again.
1191 - Exotic features (such as memalign and valloc) were removed.
1192 - The metadata were extended and improved so that the
1193 model-checker becomes able to explore and inspect the heaps.
1194 - This may induce a performance drop when enable_model-checking is
1195 ON in cmake (even if it's not used in the simulation), but it is
1196 necessary at this point to get MC working.
1198 Turn model-checking OFF if simulation performance matters to you.
1199 Not enabling it at runtime is not enough, disable it in cmake.
1201 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1204 SimGrid (3.6.2) stable; urgency=low
1206 The "Not coding new stuff allows to polish old things" release.
1209 * New bindings to the NS3 packet level simulator (experimental)
1210 * Use the raw (efficient) execution contexts instead of the sysv
1211 (portable) ones when possible.
1212 * libpcre is now mandatory in any cases since not using it led to
1213 severe performance loss and possibly other issues
1214 * Update the XML platforms:
1215 - G5K: include the latest machine in Nancy
1216 - GridPP and LCG: new platforms
1217 * Documentation was partially updated, at least (more to come)
1219 Bug fixes, cosmetics and small improvements
1220 * Free terminated processes before the end of the simulation to avoid
1221 exhausting the memory of users having very dynamic amount of
1223 * Bug fix and cosmetics about canceling non-running tasks
1224 * Bug fix about the dot loader's issues when using libcgraph
1227 * Create an installer for windows with nsis (amd64 and win32)
1228 - Add an hello world project to illustrate simgrid project creation.
1229 - Embed libpcre into the Simgrid installer to avoid
1230 its compilation burden
1231 * The raw execution contexts should work on Apple now
1232 * Port to Windows 64 bits
1233 - Sysv contexts now have an implementation for this arch
1234 - GRAS communication features now support this arch
1235 * Drop support for borland compiler on windows
1236 - this code was not maintained, and we kinda depend on gcc nowadays
1237 * Fix portability issues on kfreebsd/gnu: build error about semaphores
1238 * Fix portability issue on unstable ubuntu: linker became picky on
1241 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1243 SimGrid (3.6.1) stable; urgency=low
1245 The "Oops, we broke Macs too" release
1248 * Fixed contexts detection so that raw ones are used when possible
1249 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
1250 leads to a strange error, with user code segfaulting sometimes when
1251 the generated code is not perfectly aligned (which is not
1252 controllable from the user side, depends on the amount of code)
1255 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
1257 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1259 SimGrid-java (3.6) unstable; urgency=low
1262 * Split of every thing from simgrid v3.5 into a separate package.
1264 -- 2011-10-05 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1266 SimGrid (3.6) stable; urgency=medium
1268 The Summer Release, also known as the "OMG! They Killed Kenny!" version
1271 * Bindings now constitute their own package, separated from the main one.
1272 Rationale: reduce our maintenance nightmare by reducing the module coupling
1273 They will soon be released on their own on gforge.
1275 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
1276 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
1278 GRAS: It is not considered as stable anymore, but experimental. Sorry.
1279 * It's not quite deprecated for now because we have no replacement,
1280 but it may soon become the case.
1283 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
1284 * Fortran: New user-level cache variable to store the rank of the running
1285 process. This improves performance by an order of magnitude.
1286 * C: New coccinelle script to automatically locate and modify global and
1287 local static variables.
1288 * Improved SMPI network model with a sender-side gap to account for multiple
1292 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
1293 only say if a communication is finished, no matter whether it succeeded or
1294 failed. You can call MSG_comm_get_status() to know the status of a finished
1296 * New function MSG_task_dsend() to send a task and detach it. When a
1297 communication is detached, you are never notified of its success or failure
1298 and the memory is released automatically once it is finished. This function
1299 is useful when you don't care about the end nor the success of a
1301 * Change the prototypes of action replay. Sorry for inconvenience,
1302 but this is really more efficient this way (and to adapt your code,
1303 you just have to fix the initialization, that shouldn't be too long)
1304 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
1305 ever managed to do anything useful with it.
1306 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
1307 takes a dynar of communications. It returns immediately and gives the
1308 index of a finished communication (if any).
1309 * New example: a basic implementation of the Chord P2P algorithm.
1312 * New model for multi-core CPUs. You can now use the core attribute to
1313 precise the number of cores of a host. This is a basic model. Every
1314 process running on the host receives at most the power provided in
1315 the DTD (throughput<=power). Total throughput of process cannot exceed
1317 * New peer tag. This peer tag creates a tiny AS comprising a host and a
1318 router linked by an up-link and a down-link (possibly asymmetrical).
1319 This kind of pattern allows to easily build last-mile model style platforms.
1320 Aggregating such patterns in a rule-based AS is thus the technique of
1321 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
1322 * New model for Vivaldi routing. We transformed the Vivaldi network model
1323 into a Vivaldi routing model (based on the rule-based model). This allows to
1324 combine Vivaldi based latencies with last-mile platforms.
1327 * Added a check for NaN of IEEE754 infinite in the double entries of
1329 * Introduce a new context factory "raw", highly inspirated from the
1330 ucontext factory, but using manually crafted functions in assembly to
1331 do the work in an efficient manner.
1332 * Allow to change the used context factory at run time, not only at
1333 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
1334 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
1335 contexts at runtime (only with raw contexts or ucontexts).
1336 * Completely rewrote this module to allow parallel execution of user
1337 processes. Use --cfg=contexts/nthreads:N to execute user processes
1338 with N parallel threads (the default is 1, meaning no parallelism).
1339 * Allow to decide dynamically between sequential and parallel modes.
1340 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
1341 processes in parallel only when their number is greater than or equal to P
1343 * Added a check for NaN of IEEE754 infinite in the double entries of
1347 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
1348 won't output the state of processes when interrupted with Ctrl-C
1349 * Add a new function xbt_dynar_to_array that transforms a dynar into a
1350 NULL-terminated array. This may solve backward compatibility issues
1351 due to the change to return type of SD_simulate. See also:
1352 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
1353 * Add new macros with variable number of arguments.
1354 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
1355 - in xbt/asserts.h: xbt_assert
1356 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
1357 - in xbt/ex.h: THROWF and RETHROWF.
1358 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
1360 * Change xbt_die() to accept a format string with arguments, just like printf.
1361 * New data structure: xbt_lib_t, like a dict but more general and with better
1365 * New configuration options
1366 Options triva/categorized and triva/uncategorized can be used to generate
1367 graph configuration files for Triva visualization tool.
1368 * Configuration option tracing/platform is renamed to tracing/categorized
1369 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
1370 * New TRACE_user_link_variable interface:
1371 User provides the name of the link and the tracing variable to attach to it
1372 * the declaration of tracing categories must be done after the environment
1374 * simpler tracing interface, just one way to declare categories
1375 TRACE_category or TRACE_category_with_color, it is up to you
1376 * links in the trace file are again identified by their names
1377 * trace contains the full platform hierarchy exactly as declared using the ASes
1378 * Options tracing/msg/[task|process]:1 groups the process by hosts
1379 for both cases, tasks and processes must have names that are unique during the simulation
1380 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
1381 * The experimental option tracing/msg/volume is deprecated
1382 its functionality may be reincorporated if needed
1384 The tracing generates a trace file with unordered timestamped events,
1385 because of the way the core simulator (surf) works. A script available
1386 at the tools directory (fix-paje-trace.sh) can be used to put the events
1387 in order. We have changed the tracing so it can generate ordered timestamped
1388 events in the final trace, but depending on the simulator (and how much time
1389 is simulated) that can lead to a huge memory utilization. It is deactivated
1390 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
1392 Build Infrastructure
1393 * Define a SIMGRID_VERSION macro in simgrid_config.h.
1394 - We are trying hard to keep the API stable, but it may happen that
1395 some things change (we're a research project after all, not a
1396 nuclear plant operating system). If such things should happen, you
1397 could rely on that macro to adapt.
1398 - current value: 30600 for 3.06.00, aka 3.6
1399 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
1400 a number that can be compared with SIMGRID_VERSION.
1401 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
1402 assertions and verbose/debug logging events are disabled at compile time.
1404 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1406 SimGrid (3.5) stable; urgency=medium
1409 * New feature to any SimGrid-based simulator: Model-Checking
1410 Check SIN#1 for more details.
1413 * New Model SMPI (three-interval linear regression for correction factors)
1414 See RR-7426, available at http://hal.inria.fr/inria-00527150
1415 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
1416 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
1417 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
1418 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
1419 * See also src/smpi/README
1424 - Tracing API changes: TRACE_start and TRACE_end should not be called
1425 by user-code. They are automatically called by simulators created
1426 with SimDAG, MSG and SMPI if the toolkit is compiled with
1427 tracing_enabled=ON. Categories declaration and utilization remain the
1428 same for MSG and SimDag.
1429 - A function was added to the tracing API to declare categories with
1431 - TRACE_category_with_color (char *category, char *color)
1432 where color must be in the following format
1433 "%f %f %f", red, green, blue
1434 and red, green, blue are float values in the interval [0, 1]
1435 - User can specify NULL as color parameter, or continue calling
1436 TRACE_category (cat)
1437 On that case, the tracing system will define random colors
1438 - The following command-line options are supported:
1439 --cfg=tracing/filename:msg.trace
1440 --cfg=tracing:1 (activate tracing, needed to use others)
1441 --cfg=tracing/platform:1 (categorized resource use)
1442 --cfg=tracing/uncategorized:1 (uncategorized resource use)
1443 --cfg=tracing/msg/task:1 (task creation)
1444 --cfg=tracing/msg/process:1 (process creation, migration)
1445 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
1446 --cfg=tracing/smpi:1 (SMPI interface tracing)
1447 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
1448 - examples of examples/msg/tracing updated
1450 - DAXLoader and DOTLoader functions can generate tasks with categories
1451 - A new function to attribute a category to SD tasks:
1452 TRACE_sd_set_task_category (SD_task_t task, char *category)
1453 * Tracing the MPI interface implemented by SMPI
1454 - Collective operations are traced with states
1455 - Point-to-Point operations are traced with states/links
1456 - Tracing activated by a parameter "-trace filename" passed
1457 to smpirun during execution (considering that simgrid
1458 is compiled with tracing enabled)
1459 - To run the simulation with gdb, the simulator
1460 accepts --cfg=tracing/smpi:1 to trace SMPI
1461 - tesh files to check if smpi tracing is ok
1462 - See examples/smpi/NAS/DT-trace
1463 * GTNetS tracing re-worked
1464 - adaptation to the tracing system of GTNets to cope
1465 with modifications regarding the fullduplex mode
1466 - new tesh files to check if gtnets tracing is ok
1469 * Asynchronous communications through the functions:
1470 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
1471 * New function: MSG_load_platform_script()
1472 to make possible using a lua script instead of XML files to set up platforms
1473 * New function: MSG_set_function
1474 to associate functions to processes, used when bypassing the parser
1475 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
1477 Platforms: Add some more examples in examples/platforms
1478 * Grid'5000: see www.grid5000.fr
1479 * *_30000_hosts.xml: various huge files [mainly scalability testing]
1482 * Change the XML format. This is a very important modification. SimGrid
1483 3.5 introduces a new hierarchical format based on the notion of
1484 Autonomous Systems. Compatibility with old format is ensured
1485 through the perl script provided in the install bin directory
1486 bin/simgrid_update_xml.
1487 It is now possible to build platforms with specific routing
1488 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
1489 connect several platforms together. We will try to provide soon
1490 set of realistic platforms exploiting these properties (have a
1491 look at examples/platforms/ for the moment).
1492 * Take the opportunity of the XML format change to be a good XML citizen:
1493 rename link:ctn to link_ctn and similar changes (also dealt with by
1495 * Add a new routing scheme (rule-based) using regular expressions. It
1496 enables to have an extremely low memory footprint when the
1497 underlying routing is simple and can be compactly described. You
1498 need to have libpcre4-dev (perl regular expressions) installed if
1499 you want to use this routing scheme.
1500 * Revive the cluster TAG and allow to easily and efficiently (both in
1501 term of memory and speed) connect clusters together. Have a look
1502 at teshsuite/simdag/platforms/ to see how this can be done. With
1503 this tag, you can create clusters with thousands of tasks at no
1504 cost (have a look at examples/platforms/).
1505 Note: clusters are implemented as ASes, so there is no need for an
1506 enclosing AS tag if you have only one cluster in your platform.
1507 * Add new generic functions in the public interface that allows the user
1508 to call SURF 'create_resource' methods from your code (same
1509 functionality as the XML bypass mechanism but with a much lighter
1511 * Add a new model (enabled through command line --cfg=network/model:SMPI)
1512 that uses a piecewise linear approximation to produce better
1513 results when exchanging small messages.
1514 * Add a new parameter to handle correctly full duplex link and account
1515 for interferences between uplink and downlink communications
1516 (activate with --cfg=fullduplex:1).
1519 * Rename the SD_READY (all dependencies are satisfied and task is
1520 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
1521 dependencies are satisfied) state.
1522 This prevents a confusion between the notion of "ready to schedule"
1523 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
1524 simulated" (SD_RUNNABLE) used by the simulation kernel.
1525 * Change the way a task is considered as ready. Instead of removing
1526 dependencies when a task is done, a counter is decreased. This way,
1527 it is always possible to reach ancestors thanks to the
1528 SD_taks_get_parents function (even after the end of the simulation.)
1529 * Change the return type of SD_Simulate from (SD_task_t*) into
1530 xbt_dynar_t. This function was in handling a dynar internally and
1531 converted it into a NULL terminated array for historical reasons.
1532 * New function SD_dotload(char*) to load a DAG described in dot
1533 format. This loader and the corresponding examples require the
1534 installation of the graphviz library.
1535 * Fix a bug in the management of tasks of size 0 in the surf network
1536 models. This problem was only visible with SIMDAG and you should
1537 thus disregard results produced with earlier versions if you
1538 relied on this feature (some tasks were blocked because of this).
1539 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
1540 even though your applications were doing only point-to-point
1541 communications and sequential computations. Now you can really use any
1542 model you want (of course, if you create real parallel tasks, which are
1543 not implemented in most models beside ptaskL07, this will abort).
1544 * Add an example that schedules a DAX on an heterogeneous platform
1545 using a Min-Min strategy.
1546 * New function SD_workstation_get_current_task() that returns the kind
1547 of task currently running on a workstation in the sequential access
1549 * Raise some warnings when unexecuted tasks remains at the end of the
1550 simulation. This is usually caused by cycles in the DAG.
1553 * New function: SIMIX_process_set_function() called by MSG_set_function
1554 * Change the underlying waiting queue in semaphores so that a process
1555 can wait on several of them simultaneously (as in waitany).
1556 * Fix the way to handle tokens in semaphores so that all access patterns
1557 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
1558 * kill the dirty pimple SIMIX_message_sizes_output()
1559 Please use (proper) visualization instead
1562 * New data container: setset (set of sets of elements)
1563 * New module: mmalloc (mapped malloc, allowing to have several
1564 independent segments of malloc)
1565 * New function: xbt_dict_cursor_set_data()
1566 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
1567 * New function: xbt_dynar_is_empty()
1568 * New function: xbt_fifo_get_last_item()
1569 * Fix xbt_dynar_shrink(): use the right element size.
1570 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
1571 uninitialized areas during expand.
1572 * Fix semaphores: previous implementation was severely broken.
1573 * Use library init/fini functions for our initialization.
1574 - you can use logs and other feature as soon as you want in your
1575 code (even before the xbt_init / MSG_init)
1576 - xbt_exit is now a no-op and produce a warning when used.
1579 * Port GRAS to new SIMIX mechanisms. This allows gras users to
1580 benefit from the latest improvement to the simulation kernel.
1581 * Kill measurement sockets for now. If you rely on them, sorry. This
1582 release is not for you. This feature will be reintroduced in the
1583 future, but we cannot delay the release any further.
1584 * New function: gras_msgtype_get_name().
1585 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
1586 * Fix (at last) the pmm example: it should not randomly fail anymore.
1588 Build chain: bug fixes and overall polishing
1589 * Cmake is now stable enough. Hence, we killed the autotools.
1590 * Port to windows ( TM :)
1591 * Fix the 'make install' target.
1592 No need to use 'make install-simgrid' anymore
1593 * Introduce a 'make dist' target compiling a *source* archive
1594 'make package' compiles a binary archive
1595 * Compile java files only on need
1596 * Add --cd and --setenv command line options to tesh
1597 * Out of source builds are not fully supported yet, but we are close
1598 * Enable supernovae and optimization flags by default for our users
1601 * Add layer to set up environment directly from lua, without XML.
1602 * The effect of gras_stub_generator can be achieved through
1603 lua too (check examples/gras/console/ping_generator.lua)
1605 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1607 SimGrid (3.4.1) stable; urgency=low
1609 The "Polishing easter eggs is probably a good idea" release.
1610 This is a bug fixes release only.
1614 * Fix a bug preventing the tasks from begin garbage collected.
1617 * Fix a bug occuring when a host involved in a communication fails.
1618 This was not detected properly by the other peer involved in the
1619 communication. Now, it's reported as a network error.
1622 * Warn the user about loop dependencies in data flow of DAX files
1623 * Obey the control-flow dependencies of DAX files
1626 * Add option "enable_smpi" allowing to not compile SMPI.
1627 Probably useful for the (Mac) users experiencing a build error here
1628 * Improve the detection of lua5.1 and ruby1.8
1630 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
1632 SimGrid (3.4) stable; urgency=low
1634 The "Easter in Cargese" release. Also known as (major changes):
1636 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
1637 ~> bindings were greatly improved
1638 ~> new tracing infrastructure for better visualization introduced
1640 * the "Welcome to configury modernity" release.
1641 ~> we switched from autotools to cmake, and improved our cdash
1644 A more detailled list of changes follow (full detail in svn log).
1646 Java Bindings: Various Cleanups
1647 * (install java-gcj-compat-dev on debian-like to use them)
1648 * Remove put/get: no need to export deprecated interface in Java
1649 Use send/receive instead.
1650 * Cleanup the examples and add a README per directory
1651 * Remove example autoDestination (that's the only way to go now)
1652 * Remove example explicitDestination (was a plain copy of basic)
1653 * Make JniException a runtime exception, so that there is no need to
1654 declare the fact that you may encounter such a beast. I guess that
1655 nobody will ever want to survive such error.
1656 * Create specific errors for each MSG case of failure:
1657 host failure, transfer failure, timeout, task cancelled
1658 * Cleanup the exceptions that may get thrown by each function
1659 * Other internal cleanups in Java bindings. Performance still bad :/
1660 Ruby and Lua Bindings: create them
1661 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
1662 * That's new and great, you should try them out.
1663 Same functionalities than Java bindings, only even less polished
1665 * Kill the useless "rate" argument of SD_task_get_execution_time()
1666 Everyone used to provide -1 as a value, it was not used, and the
1667 semantic of a possible use wasn't even clear.
1668 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
1669 either as comm costs or compute costs to mean that there is no
1670 such thing for that specific task.
1671 * Add a SD_task_set_name() function
1672 * Fix SD_task_unschedule() on typed tasks
1673 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
1674 * In DAX loader, accept useless 'level' attributes to <job> since
1675 LIGO DAGs have them (seem to be to ease graphical representation).
1677 * Add an example masterslave_mailbox.c using send/receive and not
1678 the deprecated put/get interface.
1679 * Kill the MSG_paje_output() function. It's a noop since 2 years.
1680 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
1682 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
1683 (declare MSG_USE_DEPRECATED to still have the old name)
1684 * Add a MSG_task_set_data() function
1685 * About trace replay (see examples/msg/actions):
1687 - Allow to work with splitted trace files for each process
1688 Give the specific trace file as argument of each process,
1689 and call MSG_action_trace_run(NULL)
1690 You can still have one merged file for all processes.
1691 - Fix implementation of collective operations
1692 * Allow task_execute() on 0-sized tasks (closes #10063)
1694 * This is the first release of SimGrid where SMPI is not considered
1695 beta anymore (even if some corners should still be improved)
1696 * Port over the new SIMIX_network submodule (internal refactoring)
1697 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
1698 * Implement more missing elements of the standard:
1700 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
1702 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
1703 MPI_Scan() MPI_Get_processor_name()
1704 - Added implementation of missing case for Alltoall (warning: it's
1705 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
1706 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
1707 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
1708 SMPI_MPI_Allgatherv()
1709 * Bug fixes include:
1710 - MPI_Waitsome() was broken
1711 - Allow relative includes in smpicc
1712 - Command line cfg argument 'reference_speed' was ignored...
1713 - Some functions did not properly lead to auto-benching of user code
1714 - smpicc passes -O2 by default (just like openmpi one)
1716 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
1717 * Bug fixes about timeouts during communications
1718 * add SIMIX_message_sizes_output() as a pimple to write to file the
1719 amount of messages per size. Use gnuplot to get histogram.
1720 Pimple because that's the only user-visible function of simix,
1721 defined directly in xbt.h (irk, sorry)
1723 - Add a SIMIX_sem_get_capacity() function
1724 - Fix interactions with processe resume/suspende
1725 - release_forever() was stupidly broken
1726 - Fix SIMIX_display_process_status() for processes in a semaphore
1727 - Make SIMIX_sem_block_onto() user-visible
1728 * Refactoring context stuff:
1729 - Use pseudo-OOP for better modularity
1730 - reimplement SIMIX_process_kill() without process_schedule() so
1731 that the latter can take as invariant that it is called from
1733 - Merge context_start into context_new for sake of simplicity
1735 * Add a Vivaldi network model, coded live during SUD'10 ;)
1736 * Rename configuration variables to start a hierarchy:
1737 o cpu_model -> cpu/model
1738 o network_model -> network/model
1739 o workstation_model -> workstation/model
1740 * New configuration variables:
1741 o network/bandwidth_factor: correction to bandwith
1742 o network/latency_factor: correction to latency
1743 o netwotk/weight_S: correction to the weight of competing streams
1744 * Add a long description to the models, that users can see with such
1745 argument on the command line: --cfg=cpu/model:help
1746 * --help-models display the long description of all known models
1748 * config: add the ability to set a default value after registration
1749 Does not override any previously set value (e.g. from cmd line)
1750 * dict: allow to have integer key and data.
1751 When so, you need to use the following functions
1752 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
1753 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
1754 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
1755 In contrary to regular dicts, the key is not malloced before copy.
1756 Mixing scalar and regular elements in the same dict is not tested
1758 * Allow to use xbt_dynar_shrink() to expend the dynar instead
1759 Tracing for Visualization:
1760 * SimGrid is now instrumented in order to generate a trace file for
1761 visualization analysis: to use it, need to compile SimGrid with the
1762 "tracing" option enabled, and instrument the program using SimGrid with
1763 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
1764 (among other functions).
1765 * The instrumentation only traces the platform utilization for now
1766 * Documentation to use the tracing functions and how to analyze the
1767 traces with the Triva tool is written.
1768 * More information about: SimGrid FAQ (in the section Tracing Simulations
1771 * We moved to cmake as default build system. Autotools support will
1772 be dropped soon. Check the FAQ for more info about how to use it.
1773 * Greatly improved our cdash/ctest interactions
1774 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
1775 * Added memory checking tests with valgrind; lot of memleak fixing.
1776 This may be the first release of simgrid with so few memory issues
1777 * Added code coverage tests.
1778 Our coverage is still improvable, but at least we see it on cdash.
1780 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
1782 SimGrid (3.3.4) stable; urgency=low
1784 The "Desktop Grid needs love too" release (also called Xmas release).
1786 Models improvements:
1787 * Major speedup in the maxmin system solving by using lazy evaluation
1788 Instead of solving completely the maxmin system at each iteration,
1789 only invalidate (and recompute) the modified parts.
1790 This new feature is enabled in default models but you can try to
1791 turn it on with "--cfg:maxmin-selective-update=1" for other models.
1792 * Cas01 IMproved as default CPU model
1793 This CPU model is the same Cas01 model, but it uses the
1794 maxmin-selective-update flag and a heap structure to manage
1795 actions on SURF kernel.
1796 It reduces the complexity to find the next action to finish and,
1797 consequently, it's faster than the old Cas01.
1798 This is the new default CPU model (Cas01).
1799 * Rename the old Cas01 model to Cas01_fullupdate
1800 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
1801 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
1802 * CpuTI (CPU Trace Integration)
1803 A new CPU model whose objective is simulate faster when using
1804 availability trace files.
1805 Instead of using a full featured, over engineered maxmin system for
1806 CPU modeling, this model does the pre-integration of traces files
1807 to calculate the amount of CPU power available, and so, executes
1808 faster than the old CPU models.
1809 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
1810 * Use LV08 as default network model since it gives better accuracy
1811 for small messages and shouldn't change things for big ones.
1812 Use --cfg=network_model:CM02 to get the previous behavior.
1815 ******************************************
1816 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
1817 ******************************************
1818 * The new CPU model may changes simulations!
1819 The point is that events occurring at the exact same timestamp
1820 are not scheduled in the same order with the old and new
1821 version. This may be enough to completely change the execution
1822 of simulations in some cases.
1823 * The new network model will change simulations!
1824 This new model is more realistic than the previous one, so you
1825 should consider redoing your old experiments with this model.
1826 Sorry for the inconvenience.
1829 * Introduce the supernovae compilation mode
1830 When compiled that way, the whole SimGrid (or almost) is put in a
1831 single compilation unit and compiled in one shoot.
1832 This is to help gcc which has difficulties to inline stuff from one
1834 The speedup seem to be above 15%, althrough more tests are needed on
1835 amd64 to confirm that gain.
1838 * Port of MSG's mailbox on top of SIMIX network
1839 The put/get mechanism was greatly simplified on the way.
1842 * New SIMIX network module. Provides:
1843 - Mailbox: rendez-vous mechanism to find with who you want to speak
1844 - Synchronous send/recv: easier and hopefully faster since the
1845 logic is handled in the maestro process directly now
1846 - Asynchronous send/recv: you dreamt of it? It's here now
1847 Too bad that nobody cared enough to propagate the change to MSG.
1848 * Add semaphores as SIMIX synchronization mechanism.
1851 * new function SD_daxload(char*) to load a DAX file
1852 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
1853 * Introduce typed tasks. Specify its kind and cost at creation.
1854 At scheduling, just give where it should be placed, and the cost
1855 for each involved resource is automatically computed.
1856 Existing constructors so far (more to come of course):
1857 - SD_task_create_comm_e2e() for end-to-end communication
1858 - SD_task_create_comp_seq() for sequential computation
1859 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
1860 * new function SD_task_dump() for debuging display
1861 * new function SD_task_dotty(task,FILE*) writing to file the info
1862 about the task in dotty format
1863 * SD_task_dependency_exists() can now cope with having one of its
1864 arguments NULL. If so, it tests whether the other argument has any
1866 * Add getters on list of preceding/following tasks:
1867 SD_task_get_parents(task) and SD_task_get_children(task)
1868 * Add getters on amount of workstations and list:
1869 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
1870 * Add getter on task kind: SD_task_get_kind(task)
1871 * Update the start_time and finish_time of tasks on completion/failure
1872 * Bugfix: Remove task from state swags when destroyed
1875 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
1878 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
1879 dynar with one separate thread per value of the dynar.
1880 * Change the prototype of xbt_thread_create(), sorry.
1881 Added a boolean parameter indicating whether we want to join this
1882 thread (used in SG only for now)
1883 * Implement xbt_thread_join and xbt_thread_yield in SG also.
1886 * GTNetS wrappers should now be usable again (and betterly tested too)
1887 * Fix a major regression from 3.2 where the timeout provided to
1888 MSG_task_put_with_timeout() was used as absolute time before which
1889 the comm should be done.
1890 * Start to fix the <cluster> tag.
1891 - Internal links should be good now (beside of the loopback, which
1892 use the private link instead)
1893 - paths to the external world is still rather broken
1894 - the <route:multi> tag is just broken. Actually that's brain-dead.
1895 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
1896 to make it less stupid
1897 ** Check your platform with teshsuite/simdag/platforms/flatifier **
1898 * Fix a source-level compatibility glitch from 3.2: after defining
1899 MSG_USE_DEPRECATED, you can use the old name
1900 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
1901 * Allow to compile from the SVN with automake 1.11
1902 * Fix some problems when using the "start_time" tag in deployment XMLs.
1903 * Fix #8569: XBT/synchro.h has redundant declarations
1904 * Fix #8563: MSG return values and exceptions
1905 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
1906 * Integrate patch #8636: Obey DESTDIR when installing documentation.
1907 Thanks to Robson Peixoto.
1908 * Fix a vicious bug in dictionaries inducing that some elements were
1909 not freed on xbt_dict_free()
1911 Portability report of this version:
1912 * Main portability targets:
1913 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
1914 on (amd64/i386/ia64)
1915 - mac leopard on i386
1916 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
1917 but nothing critical.
1918 * Other platforms: windows, AIX and others were not tested for this release
1920 Timing report of this version:
1921 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
1922 scenario parameters). From 8h to a few seconds in desktop grid settings.
1923 * Supernovae brings about 25% speedup on i386.
1925 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
1927 SimGrid (3.3.3) stable; urgency=low
1929 The "Need for Speed" release.
1931 The timings done to validate the 3.3.2 were faulty.
1932 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
1934 The problem was a conversion from a manually handled vector to
1935 xbt_dynar_t on the critical path.
1936 xbt_dynar_foreach calls functions, inducing stack management crap.
1938 We inlined these functions and xbt_dynar_foreach is now breath taking.
1939 We also inlined xbt_swag_belong on the way.
1941 Here are some approximate speedup measurements (on master/slaves
1942 simulations lasting between 10s and 20s each):
1943 3.3.1 -> 3.3.2: about same performance
1944 3.3.2 -> 3.3.3: 40% speedup
1945 3.3.1 -> 3.3.3: 40% speedup
1946 3.3.1 with inline patch -> 3.3.3: 30% speedup
1948 Our reading is that the refactoring which occurred in 3.3.2 made us
1949 suffer much more from the xbt_dynar_foreach low performance, but
1950 once we solved this, this refactoring proved to be very performance
1951 effective. From the 40% speedup, somehow, 10% are due to the
1952 inlining and 30% to the refactoring.
1954 That's a pitty that gcc cannot inline functions placed in other files
1955 alone. We have to choose between:
1956 - break the encapsulation (by putting private data structures and
1957 accessors in headers files to help gcc)
1958 - live with low performance
1959 - switch to a decent compiler such as icc (not quite possible).
1961 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
1963 SimGrid (3.3.2) stable; urgency=low
1965 The "Simplicity does not preceed complexity, but follows it" release.
1967 The main contributors of this release were (lexical order):
1968 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
1971 * Extract the routing logic into its own object.
1972 (was dupplicated in network.c and workstation_LV07.c;
1973 Allows to implement other ways of storing that info)
1974 => kill now useless network_card concept
1975 - Use dynar to represent routes (instead of void** + int*)
1976 - kill link_set (use surf_network_model->resource_set instead)
1977 - Add a command-line option to choose the routing schema to use
1978 - Add three new models:
1979 * Floyd (shortest path computed at initialization)
1980 * Dijikstra (shortest path recomputed all the time)
1981 * Cached Dijikstra (shortest path computed on need)
1982 All these models where contributed by Silas De Munck, and are
1983 described in his ICCS09 paper.
1985 * Simplify model declaration
1986 (less redirections, less function to write when defining a model)
1987 - Factorize stuff between models:
1990 surf_model_resource_set(model)
1991 surf_model_resource_by_name(model, name)
1992 - Unify the types of models in s_surf_model_t (using an union)
1993 - Embeed fields of common_public directly into s_surf_model_t
1994 - Rename model methods:
1995 action_free ~> action_unref
1996 action_change_state ~> action_state_set
1997 action_get_state ~> action_state_get
1998 - Change model methods into functions :
1999 (model)->common_public->action_use ~> surf_action_ref
2001 * Implement a generic resource; use it as ancestor to specific ones
2002 (allows to kill duplicated code in models)
2003 Drawback: timer command don't need no name nor properties;
2004 workstation_CLM03 don't need no properties
2005 (but I guess we can live with those few bytes wasted)
2007 * Improve the action object model
2008 - implement a constructor avoiding dupplicated code about field
2009 initialization in generic_action part.
2011 * Kill the SDP model: it has an external dependency, is deprecated
2012 in flavor of modern lmm models, and didn't compile since a while
2015 * Relocation of the context module from XBT to SIMIX.
2016 (the context were decoupled from the simix processes, duplicating a lot of code)
2017 => a lot of code was factorized
2018 - less overhead is introduced during scheduling
2019 - simpler API for the context factory
2020 - the logic for process creation,destruction and manipulation was simplified
2021 * Simplification of the s_smx_process_t data structure.
2022 => accesing the simix level data associated to a process is faster now,
2023 and the code is a lot more readable.
2026 * Implement some more MPI primitives:
2027 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
2028 -implementation: Bcast: flat or 2-ary tree (default),
2029 Barrier: 4-ary tree,
2031 Allreduce: Reduce then Bcast
2032 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
2033 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
2034 Alltoallv: flat tree, like ompi
2036 * Add support for optimized collectives (Bcast is now binomial by default)
2037 * Port smpirun and smpicc to OS X
2040 * Kill SD_link_get_properties: hard to maintain and makes very little sense
2041 Shout out if you used it.
2044 * Display the list of still queued messages in SG mode when existing
2048 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
2049 * Add xbt_graph_node_get_outedges() [Silas De Munck]
2050 * Add xbt_str_from_file(FILE*)
2051 * Add xbt_dict_get_key achieving a linear reverse search
2052 * Remove the context module
2054 Portability report of this version:
2055 * Main portability targets:
2056 - Linux(debian)/x86/context
2057 - Linux(debian)/x86/pthreads
2058 - Linux(debian)/amd64/context
2059 - Linux(debian)/amd64/pthreads
2060 On these, we still have the eratic breakages of gras/pmm and
2061 amok/saturate_sg reported in previous version. We still think
2062 that the tests are the cause of the fault, not the tested code.
2064 - Mac OSX Leopard/x86/context
2065 Still false negative in tesh autotesting.
2066 Smpi still fails, but this time because readlink does not accept -f
2067 Everything seems to work properly beside of that.
2070 - AIX version 5.3 (only tested contexts this time)
2071 Smpi still fails there because mktemp is not installed.
2072 Everything seems to work properly beside of that.
2074 I managed to compile it for the first time, but several breakages.
2075 Won't delay the release for this exotic platform.
2077 * Windows: it's still lagging behind. If you want to help, please
2080 Timing report of this version:
2081 This version seem to be more than 5% faster than 3.3.1 (on linux
2082 64bits with contextes). The gain is less than expected, we are
2083 investigating this for next release.
2085 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
2087 SimGrid (3.3.1) stable; urgency=low
2090 * Implement a --cfg-help to show existing configuration variables
2091 * Build chain do not require doxygen in maintainer mode
2094 * fix a bug on struct sizeof computation, which prevented the
2095 exchange of arrays of structs in some conditions
2096 - added a regression test about this in datadesc_usage
2097 * Allow the exchange of 0-long dynamic vectors.
2098 - for that, use -1 as indicator of dynamic size instead of 0
2099 - This implied to change any size from unsigned long to long,
2100 reducing a bit communication abilities, but I guess that with
2101 64bits being quite common, this is more than enough.
2102 - This also induce a protocol change, thus bumping network protocol
2103 version from 0 to 1 (if we have external users, we have to get
2104 clean on that point too ;)
2105 - added two regression tests about this in datadesc_usage
2106 * Be more verbose when propagating local exceptions
2107 This helps debugging.
2108 * Display the status of simulated processes when receiving SIGINT in
2112 * Allow to control the simulation from a trace file.
2113 New functions MSG_action_register() and MSG_action_trace_run()
2114 The first one allows to associate a function execution to each
2115 kind of action while the second one parses a trace file and
2116 triggers the corresponding actions within the system.
2117 For now, only a toy example is provided in examples/msg/actions
2118 * Add an exemple of process migration in examples/msg/migration
2119 * Fix a bug in task exchange which broke MSG_task_get_sender()
2120 Add a teshsuite regression test for that.
2121 [Bug: if MSG_task_get_sender() is called after sender exit,
2123 * Fix a bug which prevented suspend/resume to work properly
2124 * Display the status of simulated processes when receiving SIGINT
2125 This fixes a regression of v3.3. due to the introduction of SIMIX
2126 * Bug fixing in failure management:
2127 - trace could not start by a failure at time 0
2128 - failure during communications were not working
2131 * Add SIMIX_process_set_name() to change the name of the current
2132 process in the log messages.
2133 * Store smx_hosts in a dict since we only retrieve them by name
2134 * Move the configuration infrastructure to surf
2137 * Move the configuration infrastructure to surf
2140 * Massive internal cleanups:
2141 - Store internal structures on processes instead of hosts (allows
2142 to have more than one process per host, in addition of being more
2144 - Cleanup the initialization/finalization process
2145 - Kill a whole bunch of unneeded synchronization:
2146 processes run in exclusive manner within the simulator
2147 - Move queues from global tables to process data fields
2149 - now accept -platform and -hostfile arguments
2150 - Pass the right rank value to processes according to the hostfile
2151 * Compile the examples by default, and use them as regression tests
2152 * Implement MPI_Wtime()
2153 * Change the reference speed to a command line option
2156 * TCP_gamma can now be specified as command line option using
2157 --cfg=TCP_gamma:10000000.0
2158 * Change the --surf-path cmd line option into --cfg=path:
2161 * Also include strbuff from xbt.h public header
2162 * xbt_ex_display(): do not free the exception after displaying
2163 This allows to do more with the given exception afterward.
2164 Users should call xbt_ex_free() themselves.
2168 Portability report of this version:
2169 * Main portability targets:
2170 - Linux(debian)/x86/context
2171 - Linux(debian)/x86/pthreads
2172 - Linux(debian)/amd64/context
2173 - Linux(debian)/amd64/pthreads
2174 These targets fail about 1/10 of times on gras/pmm, but we believe
2175 that this is because of the test, not because of simgrid.
2176 amok/saturate_sg fails even more rarely, and the test may not be
2179 - Mac OSX Leopard/x86/context
2180 The test suite still spits tons of errors because some obscure
2181 force prevents us from removing the temporary directories
2182 arguing that they still contain some metadata I've never heard of.
2183 Smpi fails because seq is not installed.
2184 Everything seems to work properly beside of that.
2187 - AIX version 5.3 (both contexts and pthread)
2188 Smpi still fails there because mktemp is not installed.
2189 XML inclusions seems rosty on AIX.
2191 * Windows: it's still lagging behind. If you want to help, please
2194 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
2196 SimGrid (3.3) stable; urgency=high
2200 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
2201 [Malek Cherier & Mt]
2203 * Introduce the SIMIX module: factorize code between MSG and GRAS.
2206 Until now, GRAS were using MSG as an interface to SURF. It was
2207 quite difficult because both interface have several differences
2208 (MSG channels vs GRAS sockets were the most notable point).
2210 This also opens the gate to SMPI (which should occur soon) and speed
2211 up simulations by to 40% (even if it were not the main goal).
2213 **************************************
2214 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
2215 **************************************
2216 The point is that events occuring at the exact same timestamp are
2217 not scheduled in the same order with the old and new version. This
2218 may be enough to completely change the execution of simulations in
2219 some cases. Sorry for the inconvenience.
2221 * Cleanup and upgrade the XML format to push further scalability
2222 issues (check http://hal.inria.fr/inria-00256883/ for more info)
2224 * Improve the testing infrastructure with tesh. Now a very large part of
2225 the code is tested not only by being run but also by checking that the
2226 output match an expected output [Mt].
2228 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
2229 is really less memory-demanding, which should allow you to use
2230 larger files in SimGrid [AL].
2232 * Inform valgrind about our contextes, so that it becomes usable
2233 with the default (and more effecient) version of SimGrid
2234 [contributed by Sékou Diakite, many thanks]
2237 * Introduce a listener thread in charge of receiving incoming
2238 messages from the network. It allows to overlap communication and
2239 computation but most notably, it removes some stupid deadlocks due
2240 to the fact that so far, a process could not send and receive at
2241 the same time. This made most non trivial communication schema
2243 * Convert the PIDs from long int to int to match the MSG ones (and
2244 linux ones too) [Mt]
2245 * New function: gras_agent_spawn() to launch a new process on
2246 current host. Only working in simulation for now. [Mt]
2247 * New function: gras_os_hostport() returning a constant form (ie,
2248 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
2251 * Make the backtrace of exceptions more human readable [Mt]
2252 * New module: xbt/str [Mt]
2253 a ton of string utility functions (split, join, printf to a newly
2254 allocated buffer, trim, etc)
2255 * New module: xbt/hash [Mt]
2256 SHA1 hashing algorithm (more to come if needed)
2257 * New module: xbt/synchro [Mt]
2258 synchronization tools (mutex and conditions) working the same way
2259 in simulation and in real life (mainly useful for GRAS, but not
2261 * New module: xbt/queue [Mt]
2262 classical producer/consumer synchronization scheme
2263 * xbt_dynar_new_sync() creates a synchronized dynar. All access
2264 (using the classical functions will get serialized) [Mt]
2265 * Make dictionary internal table dynamic. No need to specify its size
2266 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
2268 * Make sure the log channels are organized as a tree under windows
2269 (because of ANSI C compatibility issue, any channel were child of
2270 root directly) [Mt].
2273 * Cleaned many thing in surf and fixed a few bugs [AL].
2274 * Add a nice command line configuration mechanism to compose models [AL].
2275 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
2276 the previous one (KCCFLN05). It relies on something that looks like
2277 a max-min sharing mechanism but cannot be written as such. A new solver
2278 was thus designed [AL].
2279 * Add a new solver to lmm. Based on Lagrange optimization and
2280 gradient-based descent, it enables to efficiently maximise systems s.a
2282 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
2284 This solver enables to propose two new network models for TCP Reno and
2285 TCP Vegas based on Low's work. These models still need to be fully
2286 tested though [Pedro Velho].
2289 * Bug fix in SD_simulate. Now the time bound given as argument is
2291 * Use the new parallel task model (ptask_L07) as default.
2292 * Use the SURF command line configuration mechanism.
2293 * 0-size tasks (for synchronization) should now work.
2295 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
2297 SimGrid (3.2) stable; urgency=high
2301 We still experience issues on this platform, but we believe that at
2302 least MSG is usable.
2304 GRAS API BREAKAGE (for simplification purpose, sorry):
2305 * the gras_msgtype_by_name is not used anymore. Instead of
2306 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
2307 you can write (and must)
2308 gras_msg_send(toserver, "request", &request);
2309 - If you still want to pass a gras_msgtype_t to the function (to cache
2310 the type and avoid the lookup time), use the gras_msg_send_() variant.
2311 - Impacted functions:
2312 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
2313 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
2314 * The callbacks are now expected to return 0 when everything went well
2315 (just like the main() function)
2317 GRAS new features and improvements:
2318 * New module mechanism where user code can use per process globals [Mt]
2319 This is similar to gras_userdata_*() functions, but for libraries. It
2320 factorize some code developped over and over in the examples and AMOK.
2321 It has still to be documented and used (only amok/peermanagement is
2323 * Fix a vicious bug in the TCP buffering mechanism which leaded to message
2324 loss when they were small enough to fit into the buffer and sent quickly
2325 enough so that they can all get received in one shoot.
2326 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
2327 if not found. Use the *_or_null() variant for the old semantic.
2328 * In gras_msg_handle, do not discard messages without callback.
2329 They are probably messages to be explicitly awaited later (ie, proofs of
2330 mis-synchronization in userland since they are sent before being awaited)
2331 No big deal usually.
2332 * gras_socket_meas_send/recv: semantic changed!
2333 The numerical arguments used to be (1) the total amount of data to send
2334 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
2335 messages. This was need for the fool willing to send more than MAXINT
2336 bytes on quite fat pipes.
2339 * Do really rename the hostmanagement module to peermanagement. [Mt]
2340 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
2341 but this is rather new and this was documented in the module
2342 documentation (poor excuses, I admit)
2343 * Bandwidth measurement semantic changed! This follows the changes to
2344 gras_socket_meas_send/recv explained above.
2347 * A sequential mode has been added to the workstations. When a workstation
2348 is in sequential mode, it can execute only one task, and the other tasks
2349 are waiting in a FIFO. [Christophe Thiery]
2352 * The KCCFLN05 workstation model now handles parallel tasks. It is the
2353 model for SIMDAG. [Christophe Thiery]
2354 * Bug fix in the maxmin solver: Some values were close to 0 instead of
2355 equal to 0, which caused some bad behaviors in
2356 saturated_constraint_set_update. I now use a threshold mechanism like in
2360 * When running manually src/testall, you select specific units [Mt]
2361 testall is the result of our cunit mechanism, and should replace all
2362 the scripty thingy around since bash don't run easily on billware.
2364 * A mallocator system has been added. [Christophe Thiery]
2365 Mallocators allow you to recycle your unused objects instead of freeing them
2366 and allocating new ones.
2368 Documentation update:
2369 * FAQ reworking + New FAQs:
2370 - "Valgrind spits tons of errors!" [Mt]
2371 - "How to repport bugs" [Mt]
2372 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
2373 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
2374 - Communication time measurement within MSG [AL]
2375 - I experience weird communication times when I change the latency [AL]
2376 * GRAS tutorial [Mt]
2378 - an introduction to the framework and to the used communication model
2379 - an initiatic tour introducing the most proheminent features:
2381 . Lesson 0: Installing GRAS
2382 . Lesson 1: Setting up your own project
2383 o Part 2: Message passing
2384 . Lesson 2: Exchanging simple messages
2385 . Lesson 3: Passing arguments to the processes (in SG)
2386 . Lesson 4: Attaching callbacks to messages
2387 . Lesson 5: Using globals in processes
2388 . Lesson 6: Logging information properly
2389 . Lesson 7: Using internal timers
2390 . Lesson 8: Handling errors through exceptions
2391 . Lesson 9: Exchanging simple data
2392 . Lesson 10: Remote Procedure Calling (RPC)
2393 . Lesson 11: Explicitely waiting for messages
2394 . Recapping of message passing features in GRAS
2395 - A HOWTO section containing:
2396 o HOWTO design a GRAS application
2397 More are due, of course. They will come latter. In the meanwhile, you can
2398 check the examples which are still here.
2400 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
2402 SimGrid (3.1) stable; urgency=high
2406 There was a stack corruption somewhere, visible only when optimizing
2407 with these versions. [Vince]
2410 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
2411 module that enabled to play with Directed Acyclic Graphs. It is built
2412 directly on top of SURF and provides an API rather close to the old
2413 SG. Some old codes using SG are currently under rewrite to check that
2414 all needful functions are provided. [Christophe Thiery]
2417 * Complete rewrite of the KCCFLN05 workstation model. It is now an
2418 extension of the classical CLM03 model that gracefully handles
2419 failures. This is now the default model for MSG and GRAS. It doesn't
2420 handle parallel tasks yet though. [AL]
2421 * Bug fix: Weights were not correctly set in the network part.
2422 WARNING: This may have resulted in incorrect results with simulations
2423 where there are more than one flow on a given link. [AL]
2426 * After a (long ?) discussion on simgrid-devel, we have decided that the
2427 convention we had on units was stupid. That is why it has been decided
2428 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
2429 WARNING : This means that all previous platform files will not work as
2430 such with this version! A warning is issued to ask users to update
2432 A conversion script can be found in the contrib module of the CVS, under
2433 the name contrib/platform_generation/surfxml_update.pl [MQ]
2436 * Bug fix: Processes were started in reverse order, wrt deployment file.
2437 WARNING: if your code relies on this bug, please fix it. [AL]
2438 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
2439 being executed on two different locations. [AL]
2440 * Bug fix: Failures are now better supported thanks to Derrick's tests
2441 (there was many failure situations I hadn't thought of and that weren't
2442 correctly handled). [AL]
2443 * New function: MSG_host_is_avail indicates you whether a given m_host_t
2447 * New! a real RPC mechanism, as it ought to be since too long. [MQ]
2448 Exception occurring on server-side are propagated back to client (!).
2450 API CHANGE: the callback changed their prototype. Change:
2451 int my_handler(gras_socket_t expeditor, void *payload_data) {
2453 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
2454 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
2456 * New! function: gras_msg_handleall to deal with all messages arriving
2457 within a given period.
2458 * New! function: gras_socket_server_range to get a server socket in a
2459 range of port numbers (ease to avoid port number conflicts) [MQ]
2460 * New! gras processes display their backtrace when they get a SIGUSR1
2461 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
2462 Sweet to debug RL processes [MQ]
2466 - Do not force experiment sizes to be expressed in kb, or it becomes
2467 impossible to measure the latency this way (needs one byte-long tests)
2468 WARNING: this changes the amok_bw_* function semantic. [MQ]
2469 - Implements the link saturation stuff. [MQ]
2470 * Peer management module:
2471 New! module factorizing code that we wrote over and over [MQ].
2474 * New module: cunit (my jUnit implementation in ansi C) [MQ]
2475 - Test units are placed directly into the library code, they get extracted
2476 automatically and placed into the src/testall binary.
2477 - Convert most of the XBT tests to this system.
2478 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
2479 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
2480 live in the same C code. This required to change a little bit the API
2481 of surfxml parsing but shouldn't be an issue for end-users. [AL]
2482 * New module: sparse graph structure with basic algorithms (this is work
2483 in progress and the API is not considered to be frozen yet). [AL]
2484 * Display more information on backtraces: source line & function names are
2485 now displayed just like valgrind does (rely on addr2line tool) [MQ]
2486 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
2487 * Reworked a little bit some #include statements to load only required
2488 headers. Some user code that relied on SimGrid to include stdlib or
2489 stdio may need to include it by themselves. [AL]
2490 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
2492 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
2493 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
2494 but I guess that almost nobody used those parts. [MQ]
2496 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
2498 SimGrid (3.0.1) stable; urgency=low
2501 * Unfortunately, I had missed 5 misnamed functions:
2502 xbt_fifo_item_t xbt_fifo_newitem(void);
2503 void xbt_fifo_freeitem(xbt_fifo_item_t);
2504 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
2505 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
2506 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
2507 They're now deprecated. Please use their new versions:
2508 xbt_fifo_item_t xbt_fifo_new_item(void);
2509 void xbt_fifo_free_item(xbt_fifo_item_t);
2510 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
2511 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
2512 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
2514 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
2515 * Documentation: xbt_log module unmercifully reworked [MQ]
2516 * Bugfix: there was a problem with the ending of contexts with
2517 the pthread backend. It caused some weird deadlock or behavior
2518 depending on the pthread implementation. [AL]
2519 * Bugfix: get the exceptions raised in the simulator repport where
2520 and why they come from when they are not catched in time [AL, MQ]
2523 * Bugfix: Do repport the error when two non-connected hosts try to
2524 exchange data (Thanks to Flavien for stumbling into this one) [AL]
2527 * Add additionnal checkings on communications. Assert that two
2528 communicating hosts are connected by a set of links... [AL]
2531 * Add additionnal checkings on channel values in communication [AL]
2532 * New: MSG_task_get_source to see on which host a task was generated [HC]
2533 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
2534 the number of tasks waiting to be received on channel and sent
2536 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
2537 waits for the first task coming from a given host.. [AL]
2539 GRAS new functionnalities: [MQ]
2540 * Enhance the parsing macro to allow the size of multidimentional objects
2541 to be given thru annotations.
2542 * New example (and documentation): Matrix Multiplication a la RPC
2543 (as when I was young!) and fix a bunch of bugs found on the way.
2545 GRAS performance improvements: [MQ]
2547 * Reduce the amount of cbps creation/destruction by making it static to
2548 datadesc_send/recv() and using a (newly created) cbps_reset (based on
2551 * Change libdata to a set so that we can search for stuff by ID (and thus
2552 reduce the insane amount of dict lookups)
2555 * Actually implement gras_datadesc_copy() so that we don't have to mimick
2556 RL communication on top of SG since it's so uneffective.
2557 It may also be used for inter-thread communication in RL, one day.
2558 * Use gras_datadesc_copy() to exchange messages on top of SG
2560 - improve message exchange performance on top of SG
2561 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
2562 * Don't exchange on the network the size of the used part of buffer,
2563 instead, specify the possible buffer size to read().
2565 - reduces the amount of read/write calls (one pair per exchange)
2566 - reduces the amount of exchanged data (the size)
2567 - allows to retrieve all arrived data on receiver side, if we don't need
2568 it right now (subsequent read will peek the buffer)
2569 - allows the receiver to proceed with the begining of the stream before
2570 everything is arrived
2571 - make it possible to build an iov transport (using readv/writev)
2573 - take care of the data with non-stable storage (like stacked data),
2575 * If possible, TCP send uses vector I/O (when writev() is here)
2576 - Don't use it for receive since we send data sizes and data on the
2577 same stream, so we wouldn't be able to chain large amount of chunks
2578 before having to flush the stuff to read the size.
2579 * Rework the transport plugin mechanism to simplify it and reduce the
2580 amount of pointer dereferencement when searching for the right function
2583 * I guess that now, we do almost as few system calls as possible while
2584 doing as few data copy as possible.
2586 To improve it further, we could try to send all the sizes first and then
2587 all the data (to use iov on receiving size), but it's only a partial
2588 solution: when you have 2 dimensional data, the sizes of the second
2589 dimension is data of the first dimension, so you need 3 streams.
2591 I'm not sure the potential performance gains justify the coding burden.
2593 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
2595 SimGrid (3.00) stable; urgency=high
2598 * New! Give the possibility to hijack the surf parser and thus bypass
2599 MSG_create_environment and MSG_launch_application. Have a look at
2600 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
2602 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
2604 SimGrid (2.96) unstable; urgency=low
2609 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
2610 This deprecates the xbt_error_t mechanisms.
2611 It modifies (simplifies) all XBT and GRAS API.
2612 MSG API keeps unchanged (exceptions raised by XBT are catched from
2613 within MSG and masked with existing error handling facilities)
2616 * New! Add a FATPIPE model. [AL]
2617 * New! Add a parallel task model. [AL]
2618 * New! Add automatically a loopback interface (in the default
2619 network model) if none was precised.
2622 * Bugfix: MSG_process_resume now works with the current running process.
2624 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
2625 * Modification of MSG_task_get_compute_duration. Once a task has been
2626 processed, the value returned by this function is now equal to 0. [AL]
2627 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
2628 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
2629 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
2630 of a m_task. For now, MSG_task_cancel only works with computation
2632 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
2633 of the processor (in Mflop/s) regardless of the current load on the
2635 * API Change: use proper naming convention for MSG_getClock and
2636 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
2638 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
2639 This function changes the priority of a computation task. This priority
2640 doesn't affect the transfer rate. A priority of 2 will make a task
2641 receive two times more cpu power than the other ones. This function
2642 has been added to suit the needs of Nguyen The Loc and hasn't been that
2643 much tested yet. So if it fails, please report it and send me your code.
2645 * API Change: removed all functions and types that were marked "deprecated"
2646 since many months. Renamed MSG_global_init_args to MSG_global_init.
2648 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
2650 SimGrid (2.95) unstable; urgency=low
2653 * Steal some nice code to GNU pth to fix context detection and usage [AL]
2654 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
2655 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
2658 * Bugfix: Allow absolute paths for platform description files [MQ]
2659 * Bugfix: do free the variables after use. Leads to drastic performance
2661 * Implement max_duration (ie, timeouts) on resources [AL]
2664 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
2666 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
2667 the needed support (timeouts) [AL]
2670 * Implement measurement sockets. You can now get the bandwidth between two
2671 hosts thanks to AMOK (see below). [MQ]
2672 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
2673 dynar over the network (yeah) [MQ]
2674 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
2675 * simple/static token-ring example. [Alexandre Colucci and MQ]
2676 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
2677 in place before [MQ]
2680 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
2681 type parsing. "short" and "long" modifiers were also ignored; other
2682 modifier (such as reference level) are still ignored. [MQ]
2683 * Embeed the buffer size within the buffer itself on SG. [MQ]
2684 That way, send() are atomic and cannot get intermixed anymore (at least
2685 the ones which are less than 100k; bigger messages still have the issue)
2686 * Array size pushed by the field, not by the field type (or each
2687 and every long int will push stuff to the cbps) [MQ]
2688 * use select() to sleep since it allows to portably sleep less than one
2691 GRAS (minor cleanups)
2692 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
2695 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
2696 * type category 'ignored' killed as it was never used and were difficult
2698 * whether a type can cycle or not is now a flag, leaving room for more
2699 flags (as "ignored", if we feel the need one day ;)
2700 * Rename raw sockets to measurement sockets since "raw" has another
2701 meaning in networking community.
2704 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
2705 and offers features not belonging to GRAS but that most applications
2706 need. One day, it may be a set of plugins loadable at runtime.
2707 * New module: bandwidth
2708 bandwidth measurement between arbitrary nodes running this module. [MQ]
2710 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
2712 SimGrid (2.94) unstable; urgency=low
2714 The first beta release of SimGrid 3 !
2718 * Update the main page and the FAQ. Adding references to gforge.
2721 * Add a gras_os_getpid function.
2724 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
2725 * Extend the logs so that they also print PID, hostname, date, ... if
2727 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
2728 and kill the old version which were in testsuite/
2729 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
2733 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
2734 for users. Instead, each programming environment (GRAS, MSG,...) use it
2735 when needed to provide such a feature to users.
2736 Don't shortcut the mechanism or you will also shortcut the virtualization
2737 you need on the simulator.
2741 * Cleanups in configury with regard to compile optimization/warning flags.
2742 Also add -fno-loop-optimize to any powerpc since it's the optimization
2743 killing gcc (< 3.4.0).
2744 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
2745 needed by MSG examples complications
2746 * Borrow configury beautifications from PHP
2749 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
2750 warning (thanks loris for stumbling into this one).
2751 * Bugfix: stop loading private headers (gras_config.h) from the public
2755 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
2756 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
2757 RL would imply a DNS resolver, which is *hard* to do in a portable way
2758 (and therefore delayed).
2759 * Implement a real timer mechanism and use it in timing macros. This allows
2760 to avoid rounding errors and get a 0.000005 sec precision in timing
2761 macros. While I was at it, various cleanups:
2762 - allow to declare more than one timed section per file (fix a stupid bug)
2763 - move some private declaration to the right place
2764 - merge conditional execution and timing macros into emulation module
2765 - document the module
2766 - make sure the module cleanups its mess on gras_exit
2767 * Documentation improvements:
2768 - (new) how to compile applications using GRAS
2769 - (new) emulation support (timing macros)
2771 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
2773 SimGrid (2.93) unstable; urgency=low
2775 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
2778 - Use Paje properly where used. Still to be sanitized properly.
2779 - Portability fix: Add an implementation of the contexts using pthread
2783 - Add xbt_procname(): returns the name of the current process.
2784 Use it to show the current process's name in all logging.
2786 - fix detection of older flex version and the reaction, since we do
2787 depend on modern ones (we use lex_destroy)
2788 - Better separation of SG and RL in the libs: remove all simulation code
2789 from libgras. As a result, this lib is now only 200k when stripped.
2790 Some of the xbt modules may also be duplicated (two sets and such) and
2791 should be cleaned/killed before SG3.
2792 - Insist on using xlC on AIX because of weird problems involving gcc there.
2793 - Cleanup the make remote stuff. This is now done by scripts
2794 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
2795 mainly for our private use, but we're working on changing them to user
2798 - Bugfix: flush the socket on close only if there is some *output*.
2799 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
2801 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
2804 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
2806 SimGrid (2.92) unstable; urgency=low
2808 Alpha 3 on the path to SimGrid 3
2812 - New! First try of benchmarking macros.
2813 - New! First try so that gras_stub_generator generate deployment and
2814 remote compilation helpers.
2816 - Bugfix: Initialization fix in msg_test.
2820 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
2822 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
2824 - API Change: gras_os_sleep to take the amount of seconds as a double.
2825 Accepting an int was error prone since it was the only location where
2826 seconds were coded as such. It leaded to damn rounding errors.
2827 - Bugfix: Hard to belive that timers ever worked before this.
2829 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
2831 SimGrid (2.91) unstable; urgency=low
2833 Alpha 2 on the path to SimGrid 3
2837 - Bug fix in the lmm_solver.
2839 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
2840 through the function MSG_paje_output.
2841 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
2842 - It is possible to bound the rate of a communication in MSG with
2843 MSG_task_put_bounded() (was already in the previous version but I had forgotten
2844 to write it in the changelog).
2845 - Bug fix to let GRAS run on top of MSG until we move it directly on top
2850 - Various cleanups to the autotools stuff
2851 - Begin to move Gras examples to examples/gras/
2852 - Let make distcheck work again (yeah!)
2854 - documentation overhauled using doxygen.
2855 gtk-doc-tools is dead in SimGrid now.
2856 - Automatically extract all existing logging categories, and add the list
2857 to the documentation (long standing one, to say the less)
2859 - Cleanup the known architecture table. Reorder the entries to group what
2860 should be, and use a more consistent naming scheme.
2861 (some of the test dataset are still to be regenerated)
2862 - New! Allow library to register globals on each process just as userdata
2864 This is implemented using a xbt_dict and not a xbt_set, so we loose the
2865 lookup time (for now).
2866 Use it in msg and trp.
2867 This cleans a lot the internals and helps enforcing privacy of the
2868 headers between the gras components.
2869 - New! Add a timer mechanism, not unlike cron(8) and at(1).
2870 - Bugfix: gras_os_time was delirious in RL.
2871 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
2873 - Reenable GRAS now that it works.
2875 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
2877 SimGrid (2.90) unstable; urgency=low
2879 Alpha 1 on the path to SimGrid 3
2881 * It is a long time since the last release of SimGrid. I'm sorry about
2882 that but as I had told you, I was rewriting a lot of things. I apologize
2883 to those who had been reporting bugs to me and that I had not answered.
2884 If your bug is still in the new version, please tell me. Here is a
2885 summary of the main changes.
2887 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
2888 lead by Martin Quinson. As a consequence SimGrid gains a lot in
2889 portability, speed, and a lot more but you'll figure it out later.
2890 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
2891 I wanted to release the new MSG as soon as possible and I have
2892 broken GRAS, which is the reason why, for now, only MSG is fully
2893 functional. A laconic description of these projects is available
2894 in the documentation.
2896 * REVOLUTION 2: I have removed SG and I am now using a new simulation
2897 kernel optimized for our needs (called SURF but only the developers
2898 should use it). Hence, MSG is now roughly 30 times faster and I think
2899 that by rewriting a little bit MSG, I could event speed it up a little
2900 bit more. Beside the gain in speed, it is also much easier to encode a
2901 new platform model with SURF than it was with SG. More to come...
2903 * REVOLUTION 3: I have tried to change a little as possible the API of
2904 MSG but a few things really had to disappear. The main differences
2905 with the previous version are :
2906 1) no more m_links_t and the corresponding functions. Platforms are
2907 directly read from a XML description and cannot be hard-coded
2908 anymore. The same format is used for application deployment
2909 description. The new format is described in the documentation.
2910 Have a look in tools/platform_generation. There is a tiny script
2911 that converts from the old platform format to the new one. Concerning
2912 the application deployment format, parsing the old one is tricky.
2913 I think most of you should however be able to convert your files. If
2914 it is really an issue, I can write a C code that does the conversion.
2916 2) the toolbox tbx does not exist anymore. We now have a library
2917 with much more data-structures but without the hash-tables (we have
2918 dictionaries that are much faster).
2920 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
2922 *****************************************************************************
2923 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
2924 * don't feel like converting the oldies. (Mt) *
2925 *****************************************************************************
2928 Version 2.90: "the long awaited one"
2929 - Finished rewriting and debugging MSG. Rewrote the documentation.
2930 - disable GRAS for now since it needs to be ported to the newest SG
2933 - Finish the port to windows (using mingw32 for cross-compile)
2936 - Main loop and datastructures of SURF. A cpu resource object is
2937 functional. Surf can thus be used to create cpu's with variable
2938 performance on which you can execute some actions.
2940 2004-11-15 Martin Quinson
2941 - Port to ARM. Simply added the alignment and size descriptions. Should
2942 work, but the ARM machines are so slow that I didn't had the opportunity
2943 to 'make check' over there yet.
2945 2004-11-15 Arnaud Legrand
2946 - Trace manager now written. It uses a heap structure and is therefore
2947 expected to be efficient. It may however be speeded up (particularly
2948 when many events occur at the same date) by using red and black
2949 trees. One day maybe...
2950 - Max-min linear system solver written. It uses a sparse matrix
2951 structure taking advantage of its expected use. Most operations are
2952 O(1) and free/calloc are called as few as possible. The computation of
2953 the minimum could however be improved by using a red and black tree
2956 2004-11-03 Arnaud Legrand
2957 - Rename every gras_* function that was in xbt/ to its xbt_
2959 - Add a heap and a doubly-linked list to xbt
2960 - Added a dichotomy to the dictionaries. make check works as well before
2961 so I assume that the patch is correct. I do not know however if things
2962 run effectively faster than before now. :)
2964 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
2965 SimGrid, and the version number is bumped to 2.x
2967 2004-10-29 Martin Quinson
2968 - Introduction of the remote errors.
2969 They are the result of a RMI/RPC on the remote machine.
2970 ErrCodes being scalar values, you can't get the host on which those
2971 errors did happen. Extending the error mechanism as in Gnome is possible.
2972 No idea yet whether it is a good idea.
2974 2004-10-28 Martin Quinson
2975 - Interface revolution: the Starred Structure Eradication.
2976 I used to do typedef struct {} toto_t; and then handle *toto_t.
2977 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
2978 - ???_t is a valid type (builded with typedef)
2979 - s_toto_t is a structure (access to fields with .)
2980 - s_toto is a structure needing 'struct' keyword to be used
2981 - e_toto_t is an enum
2982 - toto_t is an 'object' (struct*)
2984 typedef struct s_toto {} s_toto_t, *toto_t;
2985 typedef enum {} e_toto_t;
2986 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
2987 s_toto_t) is private.
2989 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
2990 so that it can set the variable to NULL. It was so for dicts and sets,
2991 it changed for dynars.
2993 - Fix a bunch of memleaks in dict_remove
2994 - Fix a bug in sg/server_socket opening: it failed all the time.
2996 2004-10-07 Martin Quinson
2997 - Speed up dynar lookup operation a bit.
2999 gras_dynar_get is dead.
3001 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
3002 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
3003 (which gives you the address of the stored data).
3005 gras_dynar_get_as is an helpful macro which allows you to retrieve a
3006 copy of the data using an affectation to do the job and not a memcpy.
3008 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
3009 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
3011 It does not really speedup the dynar test because they are
3012 setting elements all the time (and look them seldom). But the dict does
3013 far more lookup than setting.
3015 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
3017 2004-10-05 Martin Quinson
3018 - Allow to (en/dis)able the cycle detection at run time.
3020 Whether we should check for cycle or not is now a property of each
3021 datatype. When you think there may be some cycle, use datadesc_cycle_set.
3022 datadesc_cycle_unset allow to remove this property when previously set.
3024 Note that the cycle detection is off by default since it impacts the
3025 performance. Watch the data you feed GRAS with ;)
3027 This property is hereditary. Any element embedded in a structure having it
3028 set have it set for the time of this data exchange.
3030 You should set it both on sender and receiver side. If you don't set it on
3031 sender side, it will enter an endless loop. If you forget on receiver
3032 side, the cycles won't be recreated after communication.
3034 - Header reorganization.
3035 Kill gras_private.h, each submodule must load the headers it needs.
3037 2004-10-04 Martin Quinson
3038 - Interface revolution: do not try to survive to malloc failure.
3040 Now, gras_malloc and friends call gras_abort() on failure.
3041 As a conclusion, malloc_error is not a valid error anymore, and all
3042 functions for which it was the only gras_error_t return value are
3043 changed. They now return void, or there result directly.
3044 This simplify the API a lot.
3046 2004-09-29 Martin Quinson
3047 - Re-enable raw sockets.
3048 Created by gras_socket_{client,server}_ext;
3049 Used with gras_raw_{send,recv}
3052 It should allow to kill the last bits of gras first version soon.
3054 This is not completely satisfactory yet (duplicate code with
3055 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
3058 - Simplify transport plugin (internal) interface by not passing any
3059 argument to _server and _client, but embedding them in the socket
3062 2004-09-28 Martin Quinson
3063 - Finish the port to AIX.
3064 autoconf was my problem (segfault within the malloc replacement
3065 function. No idea why)
3067 2004-09-16 Martin Quinson
3068 - Fix some size_t madness on 64bit architectures.
3070 2004-09-08 Martin Quinson
3071 - Reduce the number of system headers loaded, overload some more system
3072 calls (such as malloc to cast the result of the system one, and work
3074 - Fix and reintroduce the config support
3076 2004-09-07 Martin Quinson
3077 - Source code reorganization to allow Arnaud to surf all over there.
3078 - Allow to document the logging categories.
3079 - Remove all uppercase from logging categories and useless cleanup in names.
3081 2004-08-18 Martin Quinson
3082 Version 0.6.2 (protocol not changed; API changed)
3083 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
3084 gras_error_t), and NULL when not found. Functions expecting a msgtype
3085 as argument (msg_wait; msg_send) deal with NULL argument by providing a
3086 hopefully usefull message.
3087 - Portability to prehistoric sparcs again
3089 2004-08-17 Martin Quinson
3090 Version 0.6.1 (protocol not changed; ABI not changed)
3091 - prealloc some buffers to speed things up
3093 2004-08-11 Martin Quinson
3094 Version 0.6 (protocol not changed; ABI expended)
3095 - The parsing macro can deal with the references, provided that you add
3096 the relevant annotations (using GRAS_ANNOTE(size,field_name))
3098 2004-08-09 Martin Quinson
3099 Version 0.5 (protocol not changed; ABI changed)
3100 - Allow to off turn the cycle detection code in data exchange at
3101 compilation time. It should be at run time, but I'm short of time (and
3102 the config stuff is still broken). That way, we keep dict out of the
3103 critical path, which is good because the performance is poor:
3104 - search not dichotomial yet
3105 - dynar give no way to access their content and memcpy everytime
3106 - In composed data description (struct, ref and so on), stop foolness of
3107 keeping the subtype's ID, but store the type itself. This keeps sets out
3108 of the critical path, which is good since they rely on dynar and
3109 dictionnaries. The only loose of that is that we cannot detect the
3110 redeclaration of a structure/union with another content (but I'm not sure
3111 the code detected well this error before anyway). We still can detect
3112 the redefinition discrepancy for the other types.
3113 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
3114 it breaks the code because of type-punning used all over the place).
3115 This breaks on all non-gcc architectures (for now).
3117 All those changes (plus the buffer of last time) allow me to gain 2 order
3118 of magnitude on cruel tests consisting of 800000 array of integers on two
3119 level of a hierarchical structure (200 secondes -> 4 secondes)
3122 - the selector of reference must now return the type it points to, not
3123 the ID of this type.
3125 2004-08-06 Martin Quinson
3126 Version 0.4 (protocol changed; ABI not changed)
3127 - Allow to pass --gras-log argument to processes in simulation mode. Really.
3128 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
3129 - Implement a buffer transport, and use it by default (it relies on tcp in
3130 real life and on sg in simulation).
3131 That's a bit hackish since I had a new field to the structure to store
3132 its data without interfering with the subtype ones. Inheritance
3133 is tricky in C. And that's a kind of reverse inheritance with one class
3134 derivating two classes. Or maybe a game with java interfaces. Anyway,
3135 that's damn hard in C (at least).
3136 Moreover, I got tired while trying to ensure plugin separation and
3137 genericity in SG mode. MSG wants me to do weird things, so let's go for
3138 cruel hacks (temporarily of course ;).
3139 See comment in transport_private.h:71
3140 - do not include all the _interface headers in private but in the files
3141 which really need them (to cut the compilation time when they are
3144 2004-07-26 Martin Quinson
3145 Version 0.3 (protocol not changed; ABI changed)
3146 - Major overhault of the datadesc interface to simplify it:
3147 - shorted the function names:
3148 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
3149 - add a trivial way to push/pop integers into the cbps without malloc.
3150 This allows to make really generic sub_type description, which simply
3151 pop their size of the stack.
3152 - add a function gras_datadesc_ref_pop_arr() which does what users want
3153 most of the time: Declare a dynamic array (which pops its size of the
3154 stack) and declare a reference to it. Poor name, but anyway.
3155 - kill the post-send callback, add a post-receive one
3157 2004-07-23 Martin Quinson
3158 Version 0.2 (protocol changed; ABI changed)
3159 - add some testing for cpbs in the test cases, and fix some more bugs.
3160 This invalidate again the little64 data file, since I cannot regenerate
3162 - remove an awfull optimization in the logging stuff, allowing me to:
3163 - understand it again
3164 - learn gcc how to check that the argument match the provided format
3165 - fix all errors revealed by gcc after that
3166 - internal keys of dict are not \0 terminated. Deal with it properly in
3167 loggings instead of segfaulting when the user want to see the logs :-/
3169 2004-07-22 Martin Quinson
3170 - Fix some stupid bug preventing cbps (callback postit) from working
3172 2004-07-21 Martin Quinson
3173 - Some documentation cleanups
3174 - remove the useless last argument of msgtype_declare
3175 - rename the Virtu functions to fit into the 'os' namespace
3176 - move headers src/include -> src/include/gras/ and stop fooling with
3177 gras -> . symbolic link
3178 - make distcheck is now successful
3180 2004-07-19 Martin Quinson
3182 - Build shared library also
3183 - Install html doc to the right location
3184 - stop removing maintainer files in make clean
3185 - build tests only on make check
3187 2004-07-13 Martin Quinson
3189 - No major issue in previous version => change versioning schema
3190 - Re-enable little64 convertion test now that Abdou kindly regenerated the
3191 corresponding dataset.
3193 2004-07-11 Martin Quinson
3195 - Get it working with any kind of structure (we can compute the padding
3196 bytes remotely for all the architectures I have access to)
3197 - Implement the structure parsing macro (still not quite robust/complete)
3198 - Improvement to the remote testing toysuite
3200 2004-07-10 Martin Quinson
3201 [autoconf mechanism]
3202 - get ride of a bunch of deprecated macros
3203 - actually run the test for two-compliment, not only compile it :-/
3204 - test whether the structures get packed (and bail out if yes. Damn.
3205 Alignment is a serious matter)
3206 - test whether the structures get compacted (but respecting the alignment
3207 constraints of each types)
3208 - test whether the array fields of structures can straddle alignment boundaries
3210 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
3211 (took me 2 hours to find that bug, looking at the wrong place)
3212 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
3213 before sending/receiving and are used to compute the offsets of fields
3214 - Given that padding size depend even on compiler options, keep track of
3215 alignment and aligned_size only for the current architecture. Not a big
3216 deal since we send structure fields one after the other (seems
3218 - Add the datastructure used for IEEE paper by the PBIO guys to the test
3219 program, let it work on linux/gcc/little32. portability todo.
3221 2004-07-08 Martin Quinson
3222 - import and improve remote compilation support from FAST
3223 - make sure make check works on half a dozen of machines out there
3225 2004-07-07 Martin Quinson
3226 Let's say it's version 0.0.3 ;)
3227 - Implement conversions (yuhu!)
3228 - Let it work on solaris (beside conversion, of course)
3229 - Stupid me, using rand() to generate the conversion datatests in not wise.
3231 2004-07-06 Martin Quinson
3232 - Let make dist work, since I'm gonna need it to compile on remote hosts
3233 - Let Tests/datadesc_usage write the architecture on which the file was
3234 generated as first byte.
3235 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
3236 architecture descriptions.
3237 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
3238 on those architectures.
3239 - Optimization: send/recv array of scalar in one shoot
3241 2004-07-05 Martin Quinson
3242 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
3244 - Plug a whole bunch of memleaks
3245 - each process now have to call gras_{init,exit}. One day, their log
3246 settings will be separated
3247 - Continue the code factorisation between SG, RL and common in Transport.
3249 2004-07-04 Martin Quinson
3251 - Redistribution between SG and RL.
3252 We wanna have to accept in SG, so move accepted related parts of RL in
3253 the common part. (more precisely, the dynar of all known sockets is no
3254 more a static in transport.c, but part of the process_data)
3256 [gras_stub_generator]
3257 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
3259 2004-07-03 Martin Quinson
3260 - Create a new log channel tbx containing dict, set, log, dynar (to shut
3261 them all up in one shot)
3263 - Fix the ugly case of reference to dynamic array.
3264 - New (semi-public) function gras_datadesc_size to allow the messaging
3265 layer to malloc the needed space for the buffer.
3267 - gras_socket_close now expect the socket to close (and not its address to
3268 put NULL in it after it). This is because the socket passed to handlers
3269 is one of their argument (=> not writable).
3271 - propagate the interface cleanup from last week in datadesc, ie remove a
3272 superfluous level of indirection. User pass adress of variable
3273 containing data (both when sending and receiving), and not of a variable
3274 being a pointer to the data. Let's say that I like it better ;)
3275 The price for that is constructs like "int msg=*(int*)payload" in
3276 handlers, but it's a fine price, IMHO.
3278 - Let it work in RL (yuhu)
3280 2004-06-21 Martin Quinson
3282 - porting SG plugin and SG select to new standards (works almost).
3283 - plug memleaks and fix bugs around.
3286 - cleanup the prototype of data recv and force users to specify when they
3287 want to handle references to objects. Test case working even for cycles.
3288 - plug memleaks. Valgrind is perfectly ok with this.
3290 2004-06-12 Martin Quinson
3292 - cleanup the separation between plugin and main code in plugin creation
3294 2004-06-11 Martin Quinson
3296 - Reput hook for raw sockets, needed for BW experiments
3297 - kill a few lines of dead code
3298 [Data description] Interface cleanup
3299 - gras_datadesc_by_name returns the searched type or NULL.
3300 That way, no variable is needed to use a type desc once, which makes
3302 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
3303 two parameters were strings (field name, type name), leading to
3305 [Dicos] Interface cleanup
3306 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
3307 This is consistant with the dynar API.
3309 2004-04-21 Martin Quinson
3311 - Porting to new standards.
3313 - interface cleanup.
3314 There is no bag anymore, no need to take extra provision to mask the
3315 pointers behind "ID".
3316 Better splitup of functions between files create/exchange/convert.
3317 This is still a bit artificial since convert and receive are so
3318 interleaved, but anyway.
3320 - add a queued message list to procdata (the ones not matching criteria
3322 - factorize some more code between SG and RL wrt procdata
3324 - use gras_exit in example to track memleaks
3325 - get rid of gs_example now that GS is properly integrated into gras
3326 - update run_test to integrate the latest tests (datadesc)
3328 - rename WARNINGn macros to WARNn since it prooved error-prone
3330 2004-04-19 Martin Quinson
3332 - register init/exit functions within gras module mechanism
3333 - send/receive function.
3334 Convertion is not implemented, but short-cutted if not needed.
3335 struct/array elements are sent one by one (instead of block-wise), but
3336 nobody really cares (yet). Get a prototype before optimizing.
3337 - tests (using a file socket) for DD send/receive on:
3338 - base types: int, float
3339 - array: fixed size, string (ie ref to dynamic string)
3340 - structure: homogeneous, heterogeneous
3341 - chained list, graph with cycle
3342 Believe it or not, valgrind is not too unhappy with the results. The
3343 cycle happily segfaults, but the others are ok. And I'm sick of pointers
3347 - Bugfix when using a filename explicitely (instead of '-')
3349 2004-04-09 Martin Quinson
3351 - factorize more code between RL and SG in socket creation
3352 - Complete the implementation and tests of:
3354 o file (only in RL, and mainly for debugging)
3356 I lost 3 days to design a portable address resolver, and then decided
3357 that the prototype mainly have to run on my box.
3358 Addressing portability too early may be like optimizing too early :-/
3360 - use gras_init in the Tests instead of the crappy parse_log_opt
3361 (the latter function is removed)
3362 [Conditional execution]
3363 - New functions: gras_if_RL/gras_if_SG (basic support for this)
3364 [Code reorganisation]
3365 - Get rid of libgrasutils.a since it makes more trouble than it solves.
3366 Build examples against the RL library, since there is no way to disable
3367 its creation for now.
3369 For information, the beginning of coding on GRAS was back in june
3370 2003. I guess that every line has been rewritten at least twice since