1 SimGrid (3.16) UNRELEASED
4 - FreeBSD: Disable SMPI mmap privatization, switch automatically to dlopen.
5 - Mac, BSD: dlopen+thread broken, switch automatically to raw contexts.
6 - Java JAR file should be finally fully working on Mac OSX too.
8 XML platforms: Switch to platform v4.1 format.
9 * This is (mainly) a backward compatible change: v4 are valid v4.1 files
10 - <zone> can be used as a synonym for the now deprecated <as>
11 - <zoneRoute> can be used as a synonym for the now deprecated <asroute>
12 - <bypassZoneRoute> an be used as a synonym for the now deprecated <bypassAsRoute>
13 - <actor> can be used as a synonym for the now deprecated <process>
14 - state_file and avail_file periodicity is now easier to express
15 (check the documentation) the old behavior should still work.
16 * Storage: not backward compatible, but it seems that nobody ever used it
17 - Remove attribute 'content_type' of <storage_type>: was never used
18 - Make attribute 'model' of <storage_type> optional: for future usage
19 - Remove Bconnection model property: was never (in)validated. Replaced by
20 the maximum of the read and write bandwidth as a resource constraint.
23 - New and Backwards Compatibility break:
24 SD_simulate_with_update (double how_long, xbt_dynar_t changed_tasks_dynar)
25 When one wants to get the list of tasks whose states have changed during a
26 simulation round, s/he has to allocate and free a dynar and use it as
27 argument to this function. The former SD_simulate (double how_long)
31 - Allow multicore VMs, with the correct sharing (unless you overcommit)
32 BUG: vCPU overcommitting still leads to buggy sharing, though. WIP.
35 - New function to update the consumption of all hosts at once.
36 - Fix the model for multi-core hosts, linear in the amount of busy
37 cores with an abnormality for pIdle (see paper).
38 BUG: Still not satisfactory for ptask on mono-cores.
41 - The netzone are now available from the MSG API.
42 The old names still work, but are now deprecated.
45 - New algorithm to privatize globals: dlopen, with dynamic loading tricks
46 - New option: smpi/keep-temps to not cleanup temp files
47 - New option : smpi/shared-malloc-blocksize . Relevant only when global shared
48 mallocs mode is used, allows to change the size of the fake file used
49 (default 1MB), to potentially limit the number of mappings for large runs.
50 - Support for sparse privatized malloc with SMPI_PARTIAL_SHARED_MALLOC()
51 - Fortran ifort and flang compilers support
52 - New RMA calls supported (experimental) :
53 - MPI_Win_allocate, MPI_Win_create_dynamic, MPI_Win_attach
54 - MPI_Win_detach, MPI_Win_set_info, MPI_Win_get_info
55 - MPI_Win_lock_all, MPI_Win_unlock_all, MPI_Win_flush
56 - MPI_Win_flush_local, MPI_Win_flush_all, MPI_Win_flush_local_all
57 - MPI_Op_commutative, MPI_Fetch_and_Op, MPI_Compare_and_swap
58 - MPI_Rput, MPI_Rget, MPI_Raccumulate, MPI_Rget_accumulate
61 - New: this_actor::isMaestro() returns whether we are in kernel mode.
62 - Behind the scene, ActivityImpl are now automatically refcounted.
63 Removing this nasty bottleneck will greatly simplify our internals.
66 - Replay: New function xbt_replay_action_get():
67 Retrieve the function previously associated to an event type.
68 - DROPPED FUNCTION: xbt_str_varsubst()
69 - DROPPED MODULE: strbuff. We don't need it anymore.
70 - DROPPED MODULE: matrix. We don't need it anymore.
71 - DROPPED MODULE: lib. We don't need it anymore.
73 -- Release target: June 21 2017 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
75 SimGrid (3.15) stable; urgency=low
77 The Spring Release: continuous integration servers become green
78 We fixed even the transient bugs on all target architectures:
79 Linux (CentOS, Debian, Ubuntu, Fedora), Mac OSX (Mavericks, El Capitan)
80 Windows, FreeBSD, NetBSD.
82 - Rename NetCards to NetPoints.
83 This was intended to help NS3 users, but that's not a netcard.
84 That's a point in the routing algorithm, let's avoid wrong simplifications.
87 - New: MSG_process_yield(). Stop and yield to other processes.
88 - New: MSG_process_daemon(). Daemon processes are automatically killed
89 when the last non-daemon process terminates
90 - New: MSG_process_ref/unref(). Fiddle with the process refcounting.
91 - Renamed MSG_energy_plugin_init() -> MSG_host_energy_plugin_init()
92 to make room for the upcoming network energy plugin.
93 - Drop MSG_host_get_current_power_peak: duplicates MSG_host_get_speed
96 - Ensure that an actor can kill itself with Process::exit()
97 - Kill the obscure NativeException. Nobody want to survive the issues
98 it denotes, so use JniException that is a RuntimeException (not to
99 be caught explicitly).
100 - Partial bug fix in initialization. SimGrid flags on command line were
101 consumed at C level but stayed in the original Java String[] args.
102 This could mess users' args[i] if SG flags were not put at the end of
104 The SimGrid flags are now removed from the Java arguments. However,
105 the number of arguments REMAINS UNCHANGED. It is then UNSAFE to test
106 if args.length is greater than the number of YOUR OWN ARGUMENTS.
107 It might be if you have --log or --cfg flags in the command line.
108 - Fix numerous memleaks all around the place. In particular, around VMs.
112 - s4u::onPlatformCreated: right before the simulation starts
113 - s4u::onSimulationEnd: right after the main simulation loop
114 - s4u::onTimeAdvance: right after a clock change (time is discrete)
115 - s4u::Host::onSpeedChange: when the pstate is changed, or when an
116 event from the availability_file changes the avail speed.
117 - Links are now usable from s4u
118 - New: Engine::hostList() and Engine::hostCount(). Still clumsy.
119 - New: Actor::suspend(), Actor::resume(), and Actor::migrate(new_host)
120 - New examples: The conversion of MSG examples to S4U has begun
121 - Actors: create, kill, migration, and suspend
122 - Applications: master-worker and token-ring
123 - Action replay: communications and storage
124 - Drop Host::getPstateSpeedCurrent() which duplicates Host::speed()
127 - Backwards Compatibility breaks
128 - The SD_route_get_list and SD_route_get_size functions have been removed.
129 They are replaced by the unique
130 void sg_host_route(sg_host_t src, sg_host_t dst, xbt_dynar_t links)
131 The route from src to dst is built in the links dynar whose size can
132 be obtained with xbt_dynar_length.
133 - The SD_route_bandwidth and SD_route_latency functions have been replaced by
134 sg_host_route_bandwidth and sg_host_route_latency.
135 Macros ensure the backwards compatibility, but you should fix your code
138 - Major C++ rewrite ongoing (SMPI used to be C compiled in C++).
139 This can break codes using SMPI internals (from private.h instead of the public smpi.h).
140 - Bump our claim of support from MPI 1.1 to MPI 2.2.
141 We don't support 100% of it, but it should be enough. Contact us if not.
142 - MPI_Win_lock/unlock, MPI_Get_accumulate support added (as for all RMA, implementation is
143 naive and probably inaccurate)
144 - New algorithm for SMPI_SHARED_MALLOC: global, where all blocks are
145 mapped onto a unique small file using some system magic.
146 - Bugfix: smpirun was sometimes misusing hostfile when wrongly terminated
147 - Fortran: cleanups, fixes, support of user-added operations
148 - RMA: MPI_Accumulate are applied in correct order.
149 - RMA: MPI_Win_{complete/post} shouldn't miss messages anymore.
150 - Better support for MPI_IN_PLACE
151 - Support for MPI_Win attrs and keyvals.
152 - Support MPI_Comm_group_create, MPI_Type_size_x
153 - MPI ops should be properly applied to all allowed types
154 - Replace implementation of MPI_Bcast "scatter followed by rdb allgather"
155 algorithm by a non failing one from mpich.
158 - Kill the fifo data container: we don't use it anymore.
161 - A <cluster> can now be created with different speed values to represent pstates.
162 see examples/platforms/energy_cluster.xml for an example.
164 -- Wed Mar 22 17:50:21 CET 2017 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
166 SimGrid (3.14.159) stable; urgency=low
168 The previous release was only a crude approximation of a Pi release;
169 this one should be a bit better.
171 - Revert a last minute change that broke on Mac OSX.
172 - Fix the changelog and NEWS files.
173 - Improve the documentation, in particular of the routing module.
174 - Integrate some patches flying around in Debian.
176 -- Wed Dec 28 17:14:49 CET 2016 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
178 SimGrid (3.14) stable; urgency=low
181 * The whole documentation was reworked and reorganized. There is
182 still much room for improvement here, but we're on it.
185 * We now need python3 for our testing infrastructure.
186 * Model checking needs libevent
189 * Now works on FreeBSD
192 * Privatization now works on FreeBSD
194 * Privatization is now activated by default in smpirun
195 You can turn it off with -no-privatize if something goes wrong.
197 * Call-location tracing for SMPI.
198 You can add the exact location (filename / linenumber) of an MPI call to
199 your trace files and slow down or speed up the simulation between two
200 consecutive calls by using an adjustment file (see the documentation).
202 * Fixed computation of timings for MPI_Send, MPI_Recv & possibly also others
203 We've found a bug that prevented SMPI to account for MPI_Send, MPI_Recv
204 and others (in some cases) in a correct way. That is, the smpi/os, smpi/or
205 values were ignored in some cases. The timings of these functions can now
206 be significantly different.
208 * smpi/cpu-threshold:-1 should become smpi/simulate-computation:no
209 smpi/running-power is renamed to smpi/host-speed
211 * smpi/grow-injected-times option to enable or disable multiplication of the
212 timings injected in MPI_Iprobe, or MPI_Test. Enabled by default, which can
213 make simulation less precise (but also much faster).
215 * smpirun script should be (much) faster for large deployments.
217 * SMPI tracing : fixed issue with poor matching of send/receives.
219 * Replay : Fix broken waitall
221 New functions and features
222 * MSG_parallel_task_execute_with_timeout, to timeout computations.
224 Dropped / renamed functions and features
225 * msg_mailbox_t and associated functions. Use s4u::Mailbox instead.
226 - MSG_mailbox_is_empty() -> Mailbox::empty()
227 - MSG_mailbox_front() -> Mailbox::front()
228 - MSG_mailbox_get_by_alias() -> simgrid::s4u::Mailbox::byName(name)
229 - MSG_mailbox_get_task_ext() -> MSG_task_receive_ext()
230 - MSG_mailbox_get_task_ext_bounded -> MSG_task_receive_ext_bounded
231 - MSG_host_(get/set)_params -> MSG_vm_(get/set)_params
232 * Don't pass the free_f parameter to property related functions:
233 - MSG_host_set_property_value()
234 - MSG_as_router_set_property_value()
235 - MSG_storage_set_property_value()
236 * VM properties. Since msg_vm_t are msg_host_t, just use
237 MSG_host_get_property_value() and friends
238 * VM I/O related things:
239 - Ignored parameter of vm_create: core_nb, disk_path and disk_size.
240 - Unimplemented save/restore methods
241 * MSG_as_router_get_property_value() was redundent with
242 MSG_environment_as_get_property_value().
243 - Removed MSG_as_router_*propert*() functions
244 - Added MSG_environment_as_set_property_value() for consistency
245 * xbt heterogeneous dictionnaries (created with xbt_dict_new()).
246 Well, they are still there for now, but deprecated with a warning.
247 Please switch to xbt_dict_new_homogeneous() before this is removed
249 * Task affinity. Its intended behavior (that was very badly tested
250 and probably not really working) was deceiving what most users
251 would have hoped here.
252 * xbt_os_sem_get_value: unused internally, deprecated on OS X El Capitan
253 * Option network/coordinates is now useless and should be dropped.
256 * Added option storage/max_file_descriptors to allow more than 1024 files opened
259 * Added option maxmin/concurrency_limit to allow more than 100 processes per host
260 * Added Dragonfly topology support
263 * Add Exa- and Peta- units such as EiB, EB, Eib, Eb for size, and
264 EiBps, EBps, Eibps, Ebps for bandwidth.
265 They may become useful to some lucky ones.
268 * New functions: msg.Comm.waitAll() and msg.Comm.waitAny()
269 * ex/app_tokenring: new example, very similar to the MSG Token Ring
270 * ex/async_waitAll: new example, on asynchronous communications
273 * Memory usage should be decreased for simulations with a large number
274 of processes. This also helps for SMPI.
276 -- Sat Dec 24 22:34:26 CET 2016 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
278 SimGrid (3.13) stable; urgency=low
280 The Half Release, a.k.a. the Zealous Easter Trim.
282 - We removed half of the lines, that were mostly experimental cruft.
283 v3.12 lasted 286000 lines of code, v3.13 is only 142000 lines
284 (not counting blanks and comments -- according to openhub.net)
285 - The internals are now compiled in C++ (and will soon be clean C++)
286 - We removed 75 klines of XML, 12 klines of Java, 5 klines of cmake,
287 59 klines of C, etc. We added only 29 klines of C++ in replacement.
289 * Backwards Compatibility breaks
290 - Removed Lua simulation bindings (switch to C or Java for that).
291 Lua can still be used to describe platforms
292 - Removed Java kernel plug-ins.
293 Will be reintroduced after the ongoing major internals reorg.
295 - the following functions were removed.
296 They were too specific and should be reimplemented in a generic
297 way, with filter function.
298 - MSG_task_listen_from_host
299 - MSG_mailbox_get_count_host_waiting_tasks
300 - MSG_mailbox_put_with_timeout was removed.
301 Please use MSG_task_send_with_timeout instead.
303 - the SD_application_reinit function was removed. It has been a noop for a while.
304 - The ACCESS_MODE of SD_workstation has been removed. This feature was not really usable and should soon be
305 replaced by a more flexible mechanism.
306 - The following functions thus do not exist anymore
307 - SD_workstation_get_access_mode
308 - SD_workstation_set_access_mode
309 - SD_workstation_get_current_task
310 - Basic estimation functions have been removed but can easily be replaced
311 - SD_route_get_communication_time => SG_route_get_latency() + amount / SD_route_get_bandwidth()
312 - SD_workstation_get_computation_time => amount / sg_host_speed()
314 - VM.setBound(int load) is now VM.setBound(double bound) to meet the MSG semantics.
315 Use VM.getSpeed()*load/100 for the legacy behavior.
317 - option enable_tracing was removed. It was not doing anything for a while.
318 - In the ModelChecker:
319 - the model-checker now ptraces the model-checked process which means
320 you cannot use a debugger on the latter anymore (we might make this
321 optional in the feature);
322 - removed soft-dirty page tracking;
323 - remove model-checked side snapshot management,
324 MC_snapshot() and MC_compare_snapshot();
325 - keep the MC_cut() function as a stub (it was not really working
326 in the previous release).
329 * All options are consistently in kebab-case. Old names are kept as alias.
332 * Switch to platform v4 format.
333 - Rename from 'power' to 'speed' the attributes describing the amount of
334 flops that a <host>, <peer>, <cluster> or <cabinet> can deliver per second.
335 - In <trace_connect>, attribute kind="POWER" is now kind="SPEED".
336 - In <host> and <link>, attributes availability and state are gone.
337 It was redundent with state and availability traces, and with peak values.
338 - In <cluster>, attributes availability_file and state_file are gone.
339 It was too complex and unused.
340 - Kill <gpu>. Was not doing anything.
341 - The DOCTYPE points to the right URL:
342 http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd
343 (the file at this address now documents the changelog since its v1)
344 - A warning is emitted for unit-less values (they are still accepted).
345 - speed. Default: 'f' or 'flops'. Also defined:
346 'Yf', 'Zf', 'Ef', 'Pf', 'Tf', 'Gf', 'Mf', 'kf'
347 'yottaflops', 'zettaflops', 'exaflops', 'petaflops', 'teraflops', 'gigaflops', 'megaflops', 'kiloflops'
348 - bandwidth. Default: 'Bps' bytes per second (or 'bps' for bits but 1 Bps = 8 bps)
349 Also defined in bytes: 'TiBps', 'GiBps', 'MiBps', 'KiBps', 'TBps', 'GBps', 'MBps', 'kBps', 'Bps'
350 And the same in bits: 'Tibps', 'Gibps', 'Mibps', 'Kibps', 'Tbps', 'Gbps', 'Mbps', 'kbps', 'bps'
351 - latency. Default: 's' second. Also defined:
352 'w' week, 'd' day, 'h' hour, 'm' minute, 'ms' millisecond, 'us' microsecond, 'ns' nanosecond, 'ps' picosecond
354 * bin/simgrid_update_xml can upgrade your files automatically (won't convert unit-less values)
355 tools/sg_xml_unit_converter.py may help (but it's just a warning and will probably ever be).
358 * s4u::Host is now the preferred public interface to the Host features.
359 sg_host_* functions are C bindings to the exact same behavior
360 MSG_host_* and SD_workstation_* are #define to the sg_host_* ones
363 * The examples were completely reorganized (in C and Java), for your browsing pleasure.
364 * Kill all deprecated functions (the ones you had when declaring MSG_DEPRECATED).
365 They were deprecated since a few years, and probably did not even compile anymore.
368 * The API has been profoundly modified to directly use the core objects instead of redefining its own.
369 SD_Workstation_t and SD_link_t are now sg_host_t and sg_link_t respectively.
370 Some functions have also been renamed for consistency. Backward compatibility is maintained, but users are
371 encouraged to update their codes. A list of the modified functions can be found at the end of
372 include/simgrid/simdag.h
375 * simgrid::simix::kernelImmediate() is the closure callback. It ensures that
376 the lambda or closure passed as a parameter will run in kernel mode.
377 All the callback functions should be rewritten to that interface at some point.
380 * Reorganizing and cleaning the internals all around the place.
383 * Remove old default barrier/bcast buggy algorithms (see #18407)
384 * Various bug fixes to handle more codes
385 * Remove the need for the --foreground option of smpirun (it is still
386 accepted for backward compatibility).
389 * Kill the setset data container: MC don't use it anymore.
390 * Kill the queue data container: it made more sense with GRAS.
391 * Kill the xbt_peer_t data type: it's useless without GRAS.
392 * Kill rm_cb feature of config sets: it was never useful.
393 * Kill graphxml parsing feature. It was not used.
394 * Kill the deprecated code protected by XBT_USE_DEPRECATED
396 - xbt_dynar_sort_strings(), when the content is char*
397 - xbt_str_parse_int / xbt_str_parse_double, wrapping strtol/strtod
398 They throw exceptions on invalid input;
399 * C++ support for declaring CLI flags (simgrid::config::Flag);
400 * class for abstracting different signal backends (simgrid::xbt::signal).
401 with no external dependencies (we need very simple signals).
404 * refactoring and cleanup of the code;
405 * ongoing process to cleanly separate the model-checking algorithms
406 from the code model-checking support.
408 -- Wed Apr 27 21:00:53 CEST 2016 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
410 SimGrid (3.12) stable; urgency=low
412 The Facelift Release.
415 * Require g++ v4.7 at least to not speak prehistorical C++.
416 * Require Boost 1.48 (for signal2 component).
417 * Java must be version 7 at least when activated.
418 * Builds on Windows again (including Java bindings).
419 * Tracing is now always enabled (no way to turn it out)
420 * Remove GTNetS. It was not working anyway.
421 * Various cleanups in the cmake scripts.
422 * Move headers around to sort them out on installed systems:
423 - instr/instr.h -> simgrid/instr.h
424 - instr/jedule/* -> simgrid/jedule
425 - simdag/datatypes.h was removed
426 - simdag/simdag.h -> simgrid/simdag.h
427 - msg/datatypes.h was removed
428 - msg/msg.h -> simgrid/msg.h
431 * Interface improvement:
432 - Rename MSG_host_is_avail(h) to MSG_host_is_on(h)
433 - Sanitize the interface in MSG_task_ module:
434 - Merge two functions that were close enough but misleading:
435 set_compute_duration(t) -> set_flops_amount(t)
436 get_remaining_computation(t) -> get_flops_amount(t)
437 - set_data_size(t) -> set_bytes_amount(t)
438 get_data_size(t) -> get_bytes_amount(t)
439 - Massive cleanups in the functions related to the energy
440 - MSG_host_get_pstate_number() -> MSG_host_get_nb_pstates()
441 - New: MSG_host_get_pstate()
443 - msg/energy/onoff: switching hosts on and off
445 * Interface improvement:
446 - Rename Host.isAvail() to Host.isOn()
447 - Rename Process.currentProcess() to Process.getCurrentProcess()
448 - Rename Task.setDataSize() to Task.setBytesAmount()
449 - Merge Task.getRemainingDuration() and Task.getComputeDuration() into Task.getFlopsAmount()
451 - #18874: Actually allows the GC to reclaim tasks
455 - SIMIX_process_throw: raises an exception in a remote process
456 * Refactoring: Separate sub-modules
457 - libsmx: the public interface, as libc in a real system
458 - popping: the strange dance that converts a user request into a kernel handling
459 - smx_context_*: the virtualization mechanisms that embed the user code
460 - smx_*: the handling of each simcalls
462 - simcall_host_set_power_peak_at -> simcall_host_set_pstate
463 * Rename smx_action_t into smx_synchro_t, making explicit that these
464 things are used to synchronize processes with their environment.
465 For example, a communication is a sort of synchronization involving
466 the communicating processes (that may block until the exchange) and
467 the platform. The same can be said from computations, etc.
469 - #18888: segfault when a process ends before its kill_time
473 - 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.
474 - MPI_Keyval*, MPI_Attr* functions, as well as MPI_Comm_attr*, MPI_Type_attr* variants (C only, no Fortran support yet)
475 - MPI_Type_set_name, MPI_Type_get_name
476 - MPI_*_c2f and MPI_*_f2c functions
477 - MPI_Info_* functions (beware, get_nthkey may not follow the insertion order)
478 - MPI_Pack, MPI_Unpack and MPI_Pack_size functions
479 - Activate a lot of new tests from the mpich 3 testsuite
481 - Constant times can be injected inside MPI_Wtime and MPI_Test through options smpi/wtime and smpi/test
482 - InfiniBand network model added : Based on the works of Jerome Vienne
483 http://mescal.imag.fr/membres/jean-marc.vincent/index.html/PhD/Vienne.pdf
484 - When smpi/display_timing is set, also display global simulation time and application times
485 - Have smpirun, smpicc and friends display the simgrid git hash version on --git-version
486 * Collective communications
487 - 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
488 - 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/).
489 - Support for Rabenseifner Reduce/Allreduce algorithms (https://fs.hlrs.de/projects/par/mpi//myreduce.html)
491 - Replay now uses algorithms from wanted collective selector
492 - Replay can be used with SMP-aware algorithms
493 - Memory occupation of replay should now be contained (temporary buffers allocated in collective algorithms should be shared between processes)
494 - 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.
496 - [#17799] : have mpi_group_range_incl and mpi_group_range_excl better test some corner cases
497 - Correctly use loopback on fat-tree clusters
498 - Asynchronous small messages shouldn't trigger deadlocks anymore
499 * Energy/DVFS cleanup and improvement
500 - smpi_set_host_power_peak_at() -> smpi_set_host_pstate()
501 - new: smpi_get_host_pstate()
504 - "Full" network optimization flag was broken since Surf++
505 - Better handling of precision flags in maxmin
506 - Fix bug causing sometimes "Impossible" errors
507 - Properly pass cluster properties to included hosts
508 * Improvement of the Energy plugin.
509 - Always update the consumption before returning that value
510 - New property: watt_off to denote the dissipation when the host is off
511 - New functions getWattMinAt and getWattMaxAt to retrieve the
512 dissipation of pstates that we are not currently at.
513 * Java: class NetworkLink renamed to Link
514 * New function: simcall_process_get_kill_time()
515 * Massive rename s/workstation/host/
516 - That's intrusive, but that's good for the project consistency. Sorry.
517 - Change config option "workstation/model" into "host/model"
520 - Add a xbt_heap_update function, to avoid costly xbt_heap_remove+xbt_heap_insert use
521 - Add a xbt wrapper for simcall_mutex_trylock (asked in [#17878])
522 - Add two new log appenders : rollfile and splitfile. Patch by Fabien Chaix.
523 - xbt_dirname and xbt_basename for non-POSIX systems
525 * The model checker now runs as a separate process.
526 * The model checker runs must now be launched with the new simgrid-mc program.
527 * Record/Replay: the MC can display a textual representation of a path in the
528 execution graph. It can then be replayed outside of the model checker.
530 -- Mon Oct 12 06:02:41 CEST 2015 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
532 SimGrid (3.11) stable; urgency=low
537 * Normalizing pointers addresses tool for better diff between logs
540 * Add cloud examples using new VMs
541 - examples/msg/cloud/two_tasks_vm.tesh
542 - examples/msg/cloud/simple_vm.tesh
543 - examples/java/cloud/cloud.tesh
544 - examples/java/cloud/migration/migration.tesh
545 * Add java surf examples:
546 - examples/java/surfPlugin/surf_plugin.tesh
547 - examples/java/reservationSurfPlugin/reservation_surf_plugin.tes
548 - examples/java/surfCpuModel/surf_cpu_model.tesh
549 * Add SMPI+MSG example:
550 - examples/smpi/smpi_msg_masterslave/
555 - msg task destroy cancel test
556 - msg_host on/off test
557 * Move all tests in testsuite to teshsuite (adding tesh files)
558 * Restructure teshsuites
559 - one folder for each kind of test
560 * Restructure AddTests.cmake
562 - structure the order of tests (with sections)
565 * Add virtual machine
566 - creation of a VM on a PM
567 - migration of a VM from a PM to another PM
569 - MSG_process_join(msg_process_t process, double timeout)
570 - msg_bar_t MSG_barrier_init(unsigned int count)
571 - int MSG_barrier_wait(msg_bar_t barrier)
572 - void MSG_barrier_destroy(msg_bar_t barrier)
573 - msg_as_t MSG_environment_as_get_by_name(const char * name)
574 * New option "msg/debug_multiple_use" to help debugging when a task is used
577 - Improvements and finalization of MSG_storage, MSG_file APIs and their
579 - Increase code coverage in test suites
583 * Protect context stacks against stack overflow. The number of protected memory
584 pages allocated on the top of each stack (1 by default) can be configured
585 with the new command line option --cfg=contexts/guard_size:<value>.
586 * Simcalls are now generated by a python script that
587 - generates files included by SimGrid
588 - checks that all the functions exist, and proposes prototypes
590 - remove sem_destroy, file_set_data, comm_destroy, vm_set_state,
591 host_set_data, host_get_data
593 - simcall_process_join(smx_process_t process, double timeout)
594 * Fix bug where sleeping processing could not be suspended.
597 * Translate surf models from C to C++
598 - Generic classes for all models: Model, Resource, Action
599 - A generic interface for each kind of model (CPU, Network, Storage
600 Workstation, WorkstationVM)
602 * Translate surf routings from C to C++
603 * Add callbacks using sigc++ or boost::signals2
604 - Add callback functions for resource creation/destruction
605 - Add callback functions for action state change
606 - Handle Energy as a plugin
607 * Replace swag by boost::intrusive
608 * Add new routing models for clusters. For documentation, see
609 http://simgrid.gforge.inria.fr/simgrid/latest/doc/platform.html#pf_cluster
610 - tori, with topology="TORUS" and topo_parameters="ndim1,ndim2,...,ndimn"
611 parameters for cluster tag
612 - Fat trees, with topology="FAT_TREE" and
613 topo_parameters="h;m1,...,mh;w1,...,wh;p1,...,ph" parameters for cluster tag
614 - see examples/platforms/torus_cluster.xml and
615 examples/platforms/fat_tree_cluster.xml
619 * Hostfiles support host:nb_processes construct to deploy several processes on
621 * Collective communication algorithms should not crash if used with
622 improper number of nodes and report the error.
623 * SMPI now partially supports MPI_Topologies : MPI_Cart_create, MPI_Cart_shift,
624 MPI_Cart_rank, MPI_Cart_get, MPI_Cart_coords, MPI_Cartdim_get,
625 MPI_Dims_create, MPI_Cart_sub are supported.
626 * New interface to use SMPI programmatically (still depends on MSG for
627 some parts, see examples/smpi/smpi_msg_masterslave) :
628 - SMPI_app_instance_register(const char *name, xbt_main_func_t code,
632 * Global variables privatization in MPI executables is now performed at runtime
633 with the option smpi/privatize_global_variables (default:no).
634 Limitations : Linux/BSD only, with mmap enabled. Global variables inside
635 dynamic libraries loaded by the application are not privatized (static
636 linking with these libraries is advised in this case)
639 * Options defined in XML work correctly now.
642 * New cmake option, enable_lib_in_jar, to control whether native libraries are
643 copied into simgrid.jar or not (ON by default). Use this option if you want
644 to reduce the size of the installed simgrid.jar, *and* the native libraries
645 are kept installed elsewhere.
646 * Surf binding with SWIG (code generated in maintainer mode only):
647 - plugin to handle callbacks
648 - CPU model only for the moment
651 * Supernovae build mode is definitively removed. It was used to improve
652 inlining and inter-module optimizations. It is nowadays superseded by
653 link-time optimizations commonly available in compilers.
654 * Update ns-3 find lib. Bindings for ns-3 should work again now.
655 * Add boost dependency for surf++
656 * Add new macro for tests
657 - ADD_TESH(name <tesh_args>)
658 - ADD_TESH_FACTORIES(name "thread;ucontext;raw" <tesh_args>)
662 - xbt_bar_t XBT_barrier_init(unsigned int count)
663 - int XBT_barrier_wait(xbt_bar_t barrier)
664 - void XBT_barrier_destroy(xbt_bar_t barrier)
665 * Make the xbt_os_time module public
667 -- Sat May 31 22:39:38 CEST 2014 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
669 SimGrid (3.10) stable; urgency=low
671 The Clean Diaper Release, a.k.a. SimGrid is leak-free.
674 * Reintegrate Java to the main archive as desynchronizing these
675 package is not acceptable anymore (Java is now considered stable)
676 * Add explicit synchronization facilities through semaphores
677 * Bug fix: Task.setDataSize() only changed the C world, not the value
678 cached in the Java world
681 * Dramatically change the way files are handled. API and internals changed, but
682 this part of MSG was not considered as production grade either.
683 * Add explicit synchronization facilities through semaphores
684 * Add a new function MSG_host_get_process_list()
685 * Preliminary DVFS support (see examples/msg/energy/ for details)
688 * SMPI is now included directly in the libsimgrid as the windows
689 linker doesn't force us on splitting it anymore.
690 * Improvements of the SMPI replay tool:
691 - Most of the collective communications are now rooted in the same process as
692 in the original application.
693 - Traces now rely on the same MPI data type as the application (MPI_BYTE was
694 used until now). Multiple data types can now be used in a trace.
695 - The replay tool now supports traces produce either by TAU or a modified
697 - Bug Fix: the compute part of the reduce action is now taken into account.
698 - Gatherv collective is now supported
699 - SimGrid (SMPI for now) can generate replay traces as well. Option -trace-ti
700 of smpirun outputs time independent traces for the current run. One file
701 is created per process. If too many processes are simulated, this behavior
702 can be changed to one file for all processes by using the
703 tracing/smpi/format/ti_one_file flag
704 * smpirun generates the host file if needed (with given host count and platform)
705 * Integration of more than 100 STAR-MPI, MPICH, OpenMPI collective algorithms
706 - allows to select one in particular with --cfg=smpi/coll_name:algorithm
707 - allows to use the decision logic of OpenMPI(1.7) or MPICH(3.0.4) by setting
708 --cfg=smpi/coll_selector:(mpich/ompi)
709 * Support for new functions : MPI_Issend, MPI_Ssend, Commutative operations in
711 * Add a --cfg:tracing/smpi/internals option, to trace internal communications
712 happening inside a collective SMPI call.
713 * Fix the behavior of complex data types handling.
714 * Make MPI_Wtime another synchronization point to take computations into
716 * Replace MPICH-1 test suite by the one from MPICH 3.0.4. Can be built using
717 enable_smpi_MPICH3_testsuite flag in cmake. Run with ctest.
718 * Add all missing Fortran bindings, SMPI should work with Fortran 90
719 (no privatization of global variables yet)
720 * Preliminary DVFS support (see examples/smpi/energy/ for details)
723 * Verification of liveness properties is now available for SMPI applications
724 (in addition to MSG applications)
725 * Bugged examples using SMPI in examples/smpi/mc/
726 * Add --cfg=model-check/visited option. Allows the verification of infinite
727 programs. Detection of loops in the execution thanks to the system state
728 comparison and reduction of the state space to explore. Can be combined with
729 DPOR for safety properties.
732 * Allow to change SimGrid configuration (see --help) within the code
733 thanks to SD_config() as it can be done in MSG.
734 * Add a new function SD_task_set_amount() upon user request.
737 * Handle units for values (10ms, 10kiloflops, 10Bps, 1GB, ...)
738 * Remove rule based routing (no more PCRE dependency)
739 * Add a limiter_link option to cluster tag, to specify a maximum reachable
740 bandwidth in fullduplex mode when it is less than twice the nominal bandwidth.
741 * Add a loopback_bw and loopback_lat options to cluster tag.
742 * Fix the peer tag that could not be mixed with other AS within a Vivaldi
743 routing. Now peers are encapsulated in an AS and have their own private
744 router but this is transparent.
747 * Our own implementation of getline is renamed xbt_getline, and gets
748 used even if the OS provide a getline(). This should reduce the
749 configuration complexity by using the same code on all platforms.
750 * New type: xbt_cfg_elm_boolean.
751 * Allow to use yes/no for boolean configuration options in the command line.
752 * Allow to disable SimGrid cleanups at exit from command line option.
753 There are situations where one may want a simulation to end with an exit.
754 Unfortunately, calling exit may cause SimGrid to segfault, which is quite
755 annoying when scripting around the simulator. Adding a
756 --cfg=clean_atexit:no allows to circumvent this issue.
759 * Lots of memory leaks were corrected in this release.
760 There is no known memory leaks anymore, in all of our 600+ tests.
761 * New command line option --version, to get SimGrid version information.
762 Packagers may want to add extra words to SIMGRID_VERSION_EXTRA defined in
764 * Supernovae builds are deprecated, and expected to be removed in the next
767 -- Sun Nov 17 00:26:44 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
769 SimGrid (3.9) stable; urgency=low
771 The Grasgory release: GRAS is really dead now.
773 * Complete overhaul of the internal host structures scheme.
776 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
777 was considered as experimental and badly maintained since then.
778 * Keeping it was thus a trap to our potential users, that could take
779 it instead of MSG or SMPI by mistake despite is pity state.
780 * GRAS seems to have very few users (if any), and no one volunteered
781 to maintain it further. It also induces a lot of XBT code (for
782 portability sake), that must be maintained too.
783 * For all these reasons, we killed GRAS. If someone wants to revive it
784 in the future, don't cry, our git history still remembers of GRAS.
787 * Major overhaul. Merge our documentation again as time proved that
788 splitting it was really not helping our users.
789 * Further improve the developer documentation to help newcomers
790 hacking on SimGrid itself. The user documentation (and in
791 particular, the beginner documentation) is still in a sorry state.
794 * Now works on Windows too!
795 * Much more extensive test suite, from MPICH
798 * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
799 (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
800 dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
801 * Bug fix: let task be scheduled when the last dependency to be solved is
802 a control dependency.
803 * Remove SD_load_environment_script function.
804 Use the C sg_platf function if you want to declare a platform
808 * New function: MSG_process_get_number()
809 * Old function documented: MSG_config()
810 * Remove MSG_load_platform_script function
811 Use the C sg_platf function if you want to declare a platform
815 * Change the default value of the TCP_gamma constant (maximal size of TCP
816 congestion window) to a more realistic 4MiB value. If you notice changes in
817 your simulation results, you can fall back to the previous 20k tiny window
818 by adding --cfg=network/TCP_gamma:20000 on command line.
819 * (Hopefully) fix a bug wrt periodic availability and state traces
820 * Bug fix: use default values at start when first event in availability/state
821 trace is not at time 0.
824 * remove the "new_" part of function name sg_platf_new_trace_connect
825 (resulting in sg_platf_trace_connect), since it does not create
829 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
830 use case where it's really mandatory, and maintaining it was a pain in
832 * New: xbt_fifo_search(), search an item with a user-provided
833 comparison function instead of dumb pointer comparison.
836 * Fix the lua deployment:
837 Use `simgrid.init_application()` before deployment instead of
838 `simgrid.msg_register_application()` after.
841 * Transfer the tracing files into the corresponding modules.
843 -- Tue Feb 5 11:31:43 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
845 SimGrid (3.8.1) stable; urgency=low
847 The "we are told that some people want to also *install* the simgrid
850 * Add missing file "tesh.1" to the archive.
852 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
854 SimGrid (3.8) stable; urgency=low
856 The Psssshiiiit release: SimGrid jumps into the Cloud.
859 * Add an experimental interface to manipulate VMs. They are mainly
860 process groups with very few intrinsic semantic, but they should
861 allow you to build the semantic you want easily.
862 * New function: MSG_host_set_property_value()
863 * New function: MSG_process_on_exit(). To clean memory in all cases.
864 * Bug fixes that made the host (and link) failures unusable.
865 * Add a way to auto-restart process when the host in which they are
866 executing comes back (ON_FAILURE="RESTART" on deployment file,
867 MSG_process_auto_restart_set).
868 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
869 please stop using the old ones, they are DEPRECATED.
871 * Deprecate functions MSG_global_init() / MSG_global_init_args()
872 Please use MSG_init() instead. (reducing the amount of entry
873 points in the library helps us).
874 * Make it impossible to link against the wrong version of the lib
875 * Deprecate MSG_clean(). No need to call it anymore.
876 * Function MSG_get_host_number() is not deprecated anymore.
879 * Split the doc into a user guide and a reference guide.
880 * Start a developper guide to help people hacking on SimGrid.
883 * Enable tracing by default. This modules rocks you should use it.
884 * Remove option custom_flags. Now use environment variables CFLAGS
886 * Use default cmake things to detect lua instead of home grown ones.
887 * New option "enable_mallocators" to disable mallocators, for debugging
888 purpose ("on" by default).
891 * Bug fixes around the resource failures: don't let the processes
892 survive the host they are running onto.
893 * Add an interface to auto-restart processes when the host in which they are
894 executing comes back.
895 * Ensures that SIMIX_clean is called automatically. It's not part of
896 the public interface anymore (bindings should be updated).
899 * Bug fix for when SD_Simulate is called with a positive value: be careful
900 when comparing doubles. Sometimes they are different for non significant
902 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
903 parallel task whose initial work is distributed among host according
904 to the Amdahl's law. Such tasks are created with a parameter alpha
905 that corresponds to the non-parallelizable part of the computation.
906 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
907 between two sets of workstations assuming a 1D block distribution (each
908 workstation owns a similar share of data) on both sides.
910 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
911 Data redistribution will be automatically scheduled once parent and child
912 are both scheduled. The filling of computation_amount and
913 communication_amount structures is now done seamlessly thanks to the chosen
915 * New function SD_workstation_dump to display various information
916 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
917 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
918 bandwidth on the route onto which the task is scheduled and the amount of
920 To divide the nominal bandwidth by 2, the rate then has to be :
921 rate = bandwidth/(2*amount)
922 * Compute tasks that have failed can now be rescheduled and executed again
923 (from their beginning)
924 * Increasing source code coverage (src/simdag is now covered at 95.8%
928 * Re-implement time-independent trace replay using SMPI (at the
929 smpi_smp_* level) instead of MSG. This should replace
930 examples/msg/actions/actions.c
931 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
932 hindexed and structs)
933 * Implement the exchange of non-contiguous data.
934 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
935 * Correct behavior of smpi/sender_gap and set its default value to 0
936 * Add option to asynchronously send small messages to allow better
937 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
938 specifies the size in bytes under which messages will be asynchronously sent.
939 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
940 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
943 * New C interface to define a platform: XML is now optional.
944 For more info, please check include/simgrid/platf.h.
945 * New interface to define random platforms from the C:
946 For more info, please check include/simgrid/platf_generator.h and
947 examples/msg/masterslave/masterslave_platfgen.c
948 * Export a sg_cmdline dynar containing all the arguments we got from
952 * Two new tracing options for adding comments to trace file so you
953 can track your experiments (see --help-tracing for details).
954 * New option to generate a impoverished trace file (--cfg=tracing/basic:1)
955 * Adding the SimGrid version that generated the trace file as a comment.
956 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
957 * Fix to avoid key clashes on Paje links
958 * Other minor fixes related to the Paje specification
961 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
962 and renamed to xbt_str_hash() and xbt_str_hash_ext().
963 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
964 * Greatly improve the robustness of mmalloc to user errors (such as
965 using an area after freeing it, or freeing it twice)
967 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
969 SimGrid-java (3.8.1) stable; urgency=low
971 * New module: org.simgrid.trace.Trace (SimGrid trace bindings)
972 Warning: all methods are visible, but only some of them are
973 implemented so far. Check the source (src/jtrace.c)
974 for further information.
975 * New module: org.simgrid.msg.File (SimGrid File management functions)
976 * New Module: org.simgrid.msg.VM (SimGrid interface to mimick IAAS clouds)
977 * Change the meaning of Process.restart: now restart the process from
978 the begining, like MSG_process_restart in C.
979 * Add Process.setAutoRestart: handling of process restart when failed
981 * Add Process.getProperty, Host.getProperty, Host.getProperty: allows
982 you to retrieve the properties of the processes/hosts
983 * Deprecate Msg.clean(): you can just forget about it now.
984 * New function Process.getCount(), that only works when compiling
985 with the not yet released version 3.9 of the C library.
987 * New context factory based on Coroutines. It mandates a modified JVM
988 but then, the simulations run about five times faster, and there is
989 no limit to the amount of processes (beside of the available memory).
991 -- 2012-12-04 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
993 SimGrid (3.7.1) stable; urgency=low
996 * Restore the prototype of MSG_process_create_with_environment() to
997 the pre-3.7 situation by removing the kill_time argument.
998 * Add a MSG_process_set_kill_time() function instead.
1001 * Fix weird behaviors when dealing with parallel tasks.
1004 * Simgrid is now built as a dll.
1005 * Simgrid-java now works on Windows.
1006 * Simgrid-Java is now included into Windows package.
1009 * First pre-build package for MacOSX.
1012 * Fix compilation when using MSG_USE_DEPRECATED.
1013 * Fix some compilation issues on Macs and Windows.
1014 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
1015 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
1017 We discovered that the Lua console is broken, but we are missing the
1018 manpower to fix it right now. The problem existed in 3.7 too, so we
1019 are not blocking the release for that. Sorry if you depended on this
1020 feature, any help would be really welcome.
1022 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1025 SimGrid-java (3.7.1) stable; urgency=low
1027 The "Java aint got to be bloated and slow" release
1030 * Various internal cleanups and performance improvement
1031 Simulations are expected to run up to twice faster or so
1032 * Make Process.kill(process) an instance method, not a static one
1033 * User processes are not java.lang.Thread subclasses.
1034 This breaks the compatibility (sorry), but previous API was
1035 brain-dead, making it impossible to have non-trivial
1036 initializations in the process constructor.
1037 * Require a full constructor per Process sub-class.
1038 Kinda breaks the compatibility (sorry), but this allows a much more
1039 efficient way to launch the processes at simulation startup.
1040 * Do not embeed our version of semaphores, java 1.5 can be considered
1041 as sufficiently prevalent for us to not dupplicate its features.
1045 * Add examples for almost every part of the API
1046 We spotted and fixed a lot of bugs in the process
1048 * New module: asynchronous communication API
1049 * New function: Process.sleep()
1050 It takes milliseconds as argument, just as java.lang.Thread.sleep()
1051 * New module: org.simgrid.msg.Mutex (SimGrid mutexes)
1052 * New module: org.simgrid.msg.RngStream (RngStreams random generators)
1054 -- 2012-06-12 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1056 SimGrid (3.7) stable; urgency=low
1058 The "spring cleanups (before the next Big Project kicks in)" release.
1061 * We can specify the SMPI latency/bandwidth factor with command line
1062 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
1063 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
1064 You can also use the "config tag" from platform file by adding this line
1065 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
1066 (see "example/platforms/tag_config.xml" to use "config tag").
1067 Note that the command line supersedes the platform file configuration.
1068 * Change the correction factors used in LMM model, according to
1069 the latest experiments described in INRIA RR-7821.
1070 Accuracy should be improved this way.
1071 * Use the partial invalidation optimization by default for the
1072 network too. Should produce the exact same results, only faster.
1073 * Major cleanup in surf to merge models and split some optimization
1074 mechanisms from the core of the models. As a result you can now
1075 specify which model to use (e.g., --cfg=network/model:LV08
1076 --cfg=cpu/model:Cas01) and which optimization mode to use
1077 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
1078 Incompatible combinations should err at initialization. See
1079 --help-models for the list of all models and optimization modes.
1080 * The CLM03 workstation model was dropped for simplicity because it
1081 used the deprecated CM02 network model. Use default instead.
1082 * Rename the TCP_gamma configuration option to network/TCP_gamma
1083 * Rename the coordinates configuration option to
1084 network/coordinates, and document it
1085 * Use now crosstraffic keyword instead of the terribly misleading
1086 fullduplex keyword. It is activated by default now in the current
1087 default model, use --cfg=network/crosstraffic:0 to turn it off.
1088 * Ongoing refactoring the model parsing to make XML files optional
1089 See include/simgrid/platf.h for details (still to be completed)
1092 * Major overhaul of the documentation. Almost instructive now :/
1093 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
1094 functions and friends. This interface was considered as
1095 deprecated since over 2 years, it's time to inform our users that it is.
1096 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
1097 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
1098 use these (crappy) functions in your code.
1099 These functions will be removed soon. Stop using them now.
1100 * Deprecate MSG_get_host_{table,number}
1101 Implement MSG_hosts_as_dynar() instead.
1102 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
1103 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
1106 * Stabilize the parallel execution mode of user contexts
1107 * Introduce configuration variables to control parallel execution:
1108 - contexts/synchro: Synchronization mode to use when running
1109 contexts in parallel (either futex, posix or busy_wait)
1110 - contexts/parallel_threshold: Minimal number of user contexts
1111 that must be part of a scheduling round to switch to parallel
1112 execution mode (raw contexts only)
1113 * Fix bugs that prevented to use suspend/resume along with
1114 synchronization structures.
1115 * Fix bugs in process termination that lead to invalid memory access
1116 in very specific conditions.
1119 * Introduce a parallel mode for the models (controlled by surf/nthreads
1120 configuration item). In our tests, running the models in parallel
1121 never lead to any speedups because they are so fast that the gain
1122 of computing each model in parallel does not amortizes the
1123 synchronization costs, even when ultra fast futexes are used.
1124 This is released anyway because YMMV.
1127 * Performance boost by using a swag internally to compute the set of
1128 tasks that are finished and should constitute the return value of
1132 * Enable it by default now that it is considered rather stable.
1135 * Documentation of the tracing functions.
1136 * Performance gains when tracing categorized/uncategorized resource
1137 utilization by avoiding calls to get route when updating resource
1138 variables. LMM constraints are being used instead.
1139 * API changed to set task categories. Use MSG_task_set_category instead
1140 of TRACE_msg_set_task_category, and SD_task_set_category instead
1141 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
1142 * Bugfix for graphicator, routes not correctly obtained, memory leaks
1143 * Examples for link user variables added (see at examples/msg/tracing/)
1144 * Deprecated function TRACE_msg_set_process_category completely removed
1145 * Trace header updated according to the latest Paje file format
1146 * Tracing network lazy updates, no longer obligate users to use full updates
1147 * --cfg=tracing/platform:1 also registers power/bandwidth variables
1148 * Experimental: let user code declare/set/push/pop application states for hosts
1149 * API changed to allow the manual creation of graph configuration files
1150 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
1153 * Improve the API of Lua MSG bindings, using the Lua spirit.
1154 * Each simulated process now lives in its own Lua world (globals are
1155 automatically duplicated). It helps writing simulators. Will allow
1156 to run Splay programs within SimGrid in the future.
1157 * Add a Chord example in Lua, equivalent to the MSG one.
1160 * Start the implementation of a solution to express temporal
1161 properties, not only local assertions. This is still an
1162 experimental work in progress, stay clear from it to be safe.
1166 - Add new runtime parameters --help-logs and --help-log-categories
1167 to display information about supported logging parameters and
1169 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
1170 don't exists anymore.
1171 * Mallocators: allow value NULL for the reset function.
1173 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
1174 create homogeneous dictionaries, where all the elements share the
1175 same free function. Non homogeneous dictionaries will be
1176 deprecated in the next release.
1177 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
1178 - Multi-level dictionaries are deprecated.
1180 - new function xbt_dynar_search_or_negative() that is useful when
1181 you have less than 2 million elements in your dynar and don't
1182 want of the extra complexity of catching exceptions when the
1183 element is not found.
1185 - Make xbt_os_thread module (for thread portability) public.
1186 Documentation is still to come, sorry.
1188 - Cleanups and simplifications to make it maintainable again.
1189 - Exotic features (such as memalign and valloc) were removed.
1190 - The metadata were extended and improved so that the
1191 model-checker becomes able to explore and inspect the heaps.
1192 - This may induce a performance drop when enable_model-checking is
1193 ON in cmake (even if it's not used in the simulation), but it is
1194 necessary at this point to get MC working.
1196 Turn model-checking OFF if simulation performance matters to you.
1197 Not enabling it at runtime is not enough, disable it in cmake.
1199 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1202 SimGrid (3.6.2) stable; urgency=low
1204 The "Not coding new stuff allows to polish old things" release.
1207 * New bindings to the NS3 packet level simulator (experimental)
1208 * Use the raw (efficient) execution contexts instead of the sysv
1209 (portable) ones when possible.
1210 * libpcre is now mandatory in any cases since not using it led to
1211 severe performance loss and possibly other issues
1212 * Update the XML platforms:
1213 - G5K: include the latest machine in Nancy
1214 - GridPP and LCG: new platforms
1215 * Documentation was partially updated, at least (more to come)
1217 Bug fixes, cosmetics and small improvements
1218 * Free terminated processes before the end of the simulation to avoid
1219 exhausting the memory of users having very dynamic amount of
1221 * Bug fix and cosmetics about canceling non-running tasks
1222 * Bug fix about the dot loader's issues when using libcgraph
1225 * Create an installer for windows with nsis (amd64 and win32)
1226 - Add an hello world project to illustrate simgrid project creation.
1227 - Embed libpcre into the Simgrid installer to avoid
1228 its compilation burden
1229 * The raw execution contexts should work on Apple now
1230 * Port to Windows 64 bits
1231 - Sysv contexts now have an implementation for this arch
1232 - GRAS communication features now support this arch
1233 * Drop support for borland compiler on windows
1234 - this code was not maintained, and we kinda depend on gcc nowadays
1235 * Fix portability issues on kfreebsd/gnu: build error about semaphores
1236 * Fix portability issue on unstable ubuntu: linker became picky on
1239 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1241 SimGrid (3.6.1) stable; urgency=low
1243 The "Oops, we broke Macs too" release
1246 * Fixed contexts detection so that raw ones are used when possible
1247 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
1248 leads to a strange error, with user code segfaulting sometimes when
1249 the generated code is not perfectly aligned (which is not
1250 controllable from the user side, depends on the amount of code)
1253 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
1255 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1257 SimGrid-java (3.6) unstable; urgency=low
1260 * Split of every thing from simgrid v3.5 into a separate package.
1262 -- 2011-10-05 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1264 SimGrid (3.6) stable; urgency=medium
1266 The Summer Release, also known as the "OMG! They Killed Kenny!" version
1269 * Bindings now constitute their own package, separated from the main one.
1270 Rationale: reduce our maintenance nightmare by reducing the module coupling
1271 They will soon be released on their own on gforge.
1273 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
1274 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
1276 GRAS: It is not considered as stable anymore, but experimental. Sorry.
1277 * It's not quite deprecated for now because we have no replacement,
1278 but it may soon become the case.
1281 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
1282 * Fortran: New user-level cache variable to store the rank of the running
1283 process. This improves performance by an order of magnitude.
1284 * C: New coccinelle script to automatically locate and modify global and
1285 local static variables.
1286 * Improved SMPI network model with a sender-side gap to account for multiple
1290 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
1291 only say if a communication is finished, no matter whether it succeeded or
1292 failed. You can call MSG_comm_get_status() to know the status of a finished
1294 * New function MSG_task_dsend() to send a task and detach it. When a
1295 communication is detached, you are never notified of its success or failure
1296 and the memory is released automatically once it is finished. This function
1297 is useful when you don't care about the end nor the success of a
1299 * Change the prototypes of action replay. Sorry for inconvenience,
1300 but this is really more efficient this way (and to adapt your code,
1301 you just have to fix the initialization, that shouldn't be too long)
1302 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
1303 ever managed to do anything useful with it.
1304 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
1305 takes a dynar of communications. It returns immediately and gives the
1306 index of a finished communication (if any).
1307 * New example: a basic implementation of the Chord P2P algorithm.
1310 * New model for multi-core CPUs. You can now use the core attribute to
1311 precise the number of cores of a host. This is a basic model. Every
1312 process running on the host receives at most the power provided in
1313 the DTD (throughput<=power). Total throughput of process cannot exceed
1315 * New peer tag. This peer tag creates a tiny AS comprising a host and a
1316 router linked by an up-link and a down-link (possibly asymmetrical).
1317 This kind of pattern allows to easily build last-mile model style platforms.
1318 Aggregating such patterns in a rule-based AS is thus the technique of
1319 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
1320 * New model for Vivaldi routing. We transformed the Vivaldi network model
1321 into a Vivaldi routing model (based on the rule-based model). This allows to
1322 combine Vivaldi based latencies with last-mile platforms.
1325 * Added a check for NaN of IEEE754 infinite in the double entries of
1327 * Introduce a new context factory "raw", highly inspirated from the
1328 ucontext factory, but using manually crafted functions in assembly to
1329 do the work in an efficient manner.
1330 * Allow to change the used context factory at run time, not only at
1331 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
1332 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
1333 contexts at runtime (only with raw contexts or ucontexts).
1334 * Completely rewrote this module to allow parallel execution of user
1335 processes. Use --cfg=contexts/nthreads:N to execute user processes
1336 with N parallel threads (the default is 1, meaning no parallelism).
1337 * Allow to decide dynamically between sequential and parallel modes.
1338 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
1339 processes in parallel only when their number is greater than or equal to P
1341 * Added a check for NaN of IEEE754 infinite in the double entries of
1345 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
1346 won't output the state of processes when interrupted with Ctrl-C
1347 * Add a new function xbt_dynar_to_array that transforms a dynar into a
1348 NULL-terminated array. This may solve backward compatibility issues
1349 due to the change to return type of SD_simulate. See also:
1350 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
1351 * Add new macros with variable number of arguments.
1352 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
1353 - in xbt/asserts.h: xbt_assert
1354 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
1355 - in xbt/ex.h: THROWF and RETHROWF.
1356 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
1358 * Change xbt_die() to accept a format string with arguments, just like printf.
1359 * New data structure: xbt_lib_t, like a dict but more general and with better
1363 * New configuration options
1364 Options triva/categorized and triva/uncategorized can be used to generate
1365 graph configuration files for Triva visualization tool.
1366 * Configuration option tracing/platform is renamed to tracing/categorized
1367 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
1368 * New TRACE_user_link_variable interface:
1369 User provides the name of the link and the tracing variable to attach to it
1370 * the declaration of tracing categories must be done after the environment
1372 * simpler tracing interface, just one way to declare categories
1373 TRACE_category or TRACE_category_with_color, it is up to you
1374 * links in the trace file are again identified by their names
1375 * trace contains the full platform hierarchy exactly as declared using the ASes
1376 * Options tracing/msg/[task|process]:1 groups the process by hosts
1377 for both cases, tasks and processes must have names that are unique during the simulation
1378 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
1379 * The experimental option tracing/msg/volume is deprecated
1380 its functionality may be reincorporated if needed
1382 The tracing generates a trace file with unordered timestamped events,
1383 because of the way the core simulator (surf) works. A script available
1384 at the tools directory (fix-paje-trace.sh) can be used to put the events
1385 in order. We have changed the tracing so it can generate ordered timestamped
1386 events in the final trace, but depending on the simulator (and how much time
1387 is simulated) that can lead to a huge memory utilization. It is deactivated
1388 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
1390 Build Infrastructure
1391 * Define a SIMGRID_VERSION macro in simgrid_config.h.
1392 - We are trying hard to keep the API stable, but it may happen that
1393 some things change (we're a research project after all, not a
1394 nuclear plant operating system). If such things should happen, you
1395 could rely on that macro to adapt.
1396 - current value: 30600 for 3.06.00, aka 3.6
1397 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
1398 a number that can be compared with SIMGRID_VERSION.
1399 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
1400 assertions and verbose/debug logging events are disabled at compile time.
1402 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1404 SimGrid (3.5) stable; urgency=medium
1407 * New feature to any SimGrid-based simulator: Model-Checking
1408 Check SIN#1 for more details.
1411 * New Model SMPI (three-interval linear regression for correction factors)
1412 See RR-7426, available at http://hal.inria.fr/inria-00527150
1413 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
1414 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
1415 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
1416 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
1417 * See also src/smpi/README
1422 - Tracing API changes: TRACE_start and TRACE_end should not be called
1423 by user-code. They are automatically called by simulators created
1424 with SimDAG, MSG and SMPI if the toolkit is compiled with
1425 tracing_enabled=ON. Categories declaration and utilization remain the
1426 same for MSG and SimDag.
1427 - A function was added to the tracing API to declare categories with
1429 - TRACE_category_with_color (char *category, char *color)
1430 where color must be in the following format
1431 "%f %f %f", red, green, blue
1432 and red, green, blue are float values in the interval [0, 1]
1433 - User can specify NULL as color parameter, or continue calling
1434 TRACE_category (cat)
1435 On that case, the tracing system will define random colors
1436 - The following command-line options are supported:
1437 --cfg=tracing/filename:msg.trace
1438 --cfg=tracing:1 (activate tracing, needed to use others)
1439 --cfg=tracing/platform:1 (categorized resource use)
1440 --cfg=tracing/uncategorized:1 (uncategorized resource use)
1441 --cfg=tracing/msg/task:1 (task creation)
1442 --cfg=tracing/msg/process:1 (process creation, migration)
1443 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
1444 --cfg=tracing/smpi:1 (SMPI interface tracing)
1445 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
1446 - examples of examples/msg/tracing updated
1448 - DAXLoader and DOTLoader functions can generate tasks with categories
1449 - A new function to attribute a category to SD tasks:
1450 TRACE_sd_set_task_category (SD_task_t task, char *category)
1451 * Tracing the MPI interface implemented by SMPI
1452 - Collective operations are traced with states
1453 - Point-to-Point operations are traced with states/links
1454 - Tracing activated by a parameter "-trace filename" passed
1455 to smpirun during execution (considering that simgrid
1456 is compiled with tracing enabled)
1457 - To run the simulation with gdb, the simulator
1458 accepts --cfg=tracing/smpi:1 to trace SMPI
1459 - tesh files to check if smpi tracing is ok
1460 - See examples/smpi/NAS/DT-trace
1461 * GTNetS tracing re-worked
1462 - adaptation to the tracing system of GTNets to cope
1463 with modifications regarding the fullduplex mode
1464 - new tesh files to check if gtnets tracing is ok
1467 * Asynchronous communications through the functions:
1468 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
1469 * New function: MSG_load_platform_script()
1470 to make possible using a lua script instead of XML files to set up platforms
1471 * New function: MSG_set_function
1472 to associate functions to processes, used when bypassing the parser
1473 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
1475 Platforms: Add some more examples in examples/platforms
1476 * Grid'5000: see www.grid5000.fr
1477 * *_30000_hosts.xml: various huge files [mainly scalability testing]
1480 * Change the XML format. This is a very important modification. SimGrid
1481 3.5 introduces a new hierarchical format based on the notion of
1482 Autonomous Systems. Compatibility with old format is ensured
1483 through the perl script provided in the install bin directory
1484 bin/simgrid_update_xml.
1485 It is now possible to build platforms with specific routing
1486 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
1487 connect several platforms together. We will try to provide soon
1488 set of realistic platforms exploiting these properties (have a
1489 look at examples/platforms/ for the moment).
1490 * Take the opportunity of the XML format change to be a good XML citizen:
1491 rename link:ctn to link_ctn and similar changes (also dealt with by
1493 * Add a new routing scheme (rule-based) using regular expressions. It
1494 enables to have an extremely low memory footprint when the
1495 underlying routing is simple and can be compactly described. You
1496 need to have libpcre4-dev (perl regular expressions) installed if
1497 you want to use this routing scheme.
1498 * Revive the cluster TAG and allow to easily and efficiently (both in
1499 term of memory and speed) connect clusters together. Have a look
1500 at teshsuite/simdag/platforms/ to see how this can be done. With
1501 this tag, you can create clusters with thousands of tasks at no
1502 cost (have a look at examples/platforms/).
1503 Note: clusters are implemented as ASes, so there is no need for an
1504 enclosing AS tag if you have only one cluster in your platform.
1505 * Add new generic functions in the public interface that allows the user
1506 to call SURF 'create_resource' methods from your code (same
1507 functionality as the XML bypass mechanism but with a much lighter
1509 * Add a new model (enabled through command line --cfg=network/model:SMPI)
1510 that uses a piecewise linear approximation to produce better
1511 results when exchanging small messages.
1512 * Add a new parameter to handle correctly full duplex link and account
1513 for interferences between uplink and downlink communications
1514 (activate with --cfg=fullduplex:1).
1517 * Rename the SD_READY (all dependencies are satisfied and task is
1518 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
1519 dependencies are satisfied) state.
1520 This prevents a confusion between the notion of "ready to schedule"
1521 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
1522 simulated" (SD_RUNNABLE) used by the simulation kernel.
1523 * Change the way a task is considered as ready. Instead of removing
1524 dependencies when a task is done, a counter is decreased. This way,
1525 it is always possible to reach ancestors thanks to the
1526 SD_taks_get_parents function (even after the end of the simulation.)
1527 * Change the return type of SD_Simulate from (SD_task_t*) into
1528 xbt_dynar_t. This function was in handling a dynar internally and
1529 converted it into a NULL terminated array for historical reasons.
1530 * New function SD_dotload(char*) to load a DAG described in dot
1531 format. This loader and the corresponding examples require the
1532 installation of the graphviz library.
1533 * Fix a bug in the management of tasks of size 0 in the surf network
1534 models. This problem was only visible with SIMDAG and you should
1535 thus disregard results produced with earlier versions if you
1536 relied on this feature (some tasks were blocked because of this).
1537 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
1538 even though your applications were doing only point-to-point
1539 communications and sequential computations. Now you can really use any
1540 model you want (of course, if you create real parallel tasks, which are
1541 not implemented in most models beside ptaskL07, this will abort).
1542 * Add an example that schedules a DAX on an heterogeneous platform
1543 using a Min-Min strategy.
1544 * New function SD_workstation_get_current_task() that returns the kind
1545 of task currently running on a workstation in the sequential access
1547 * Raise some warnings when unexecuted tasks remains at the end of the
1548 simulation. This is usually caused by cycles in the DAG.
1551 * New function: SIMIX_process_set_function() called by MSG_set_function
1552 * Change the underlying waiting queue in semaphores so that a process
1553 can wait on several of them simultaneously (as in waitany).
1554 * Fix the way to handle tokens in semaphores so that all access patterns
1555 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
1556 * kill the dirty pimple SIMIX_message_sizes_output()
1557 Please use (proper) visualization instead
1560 * New data container: setset (set of sets of elements)
1561 * New module: mmalloc (mapped malloc, allowing to have several
1562 independent segments of malloc)
1563 * New function: xbt_dict_cursor_set_data()
1564 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
1565 * New function: xbt_dynar_is_empty()
1566 * New function: xbt_fifo_get_last_item()
1567 * Fix xbt_dynar_shrink(): use the right element size.
1568 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
1569 uninitialized areas during expand.
1570 * Fix semaphores: previous implementation was severely broken.
1571 * Use library init/fini functions for our initialization.
1572 - you can use logs and other feature as soon as you want in your
1573 code (even before the xbt_init / MSG_init)
1574 - xbt_exit is now a no-op and produce a warning when used.
1577 * Port GRAS to new SIMIX mechanisms. This allows gras users to
1578 benefit from the latest improvement to the simulation kernel.
1579 * Kill measurement sockets for now. If you rely on them, sorry. This
1580 release is not for you. This feature will be reintroduced in the
1581 future, but we cannot delay the release any further.
1582 * New function: gras_msgtype_get_name().
1583 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
1584 * Fix (at last) the pmm example: it should not randomly fail anymore.
1586 Build chain: bug fixes and overall polishing
1587 * Cmake is now stable enough. Hence, we killed the autotools.
1588 * Port to windows ( TM :)
1589 * Fix the 'make install' target.
1590 No need to use 'make install-simgrid' anymore
1591 * Introduce a 'make dist' target compiling a *source* archive
1592 'make package' compiles a binary archive
1593 * Compile java files only on need
1594 * Add --cd and --setenv command line options to tesh
1595 * Out of source builds are not fully supported yet, but we are close
1596 * Enable supernovae and optimization flags by default for our users
1599 * Add layer to set up environment directly from lua, without XML.
1600 * The effect of gras_stub_generator can be achieved through
1601 lua too (check examples/gras/console/ping_generator.lua)
1603 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1605 SimGrid (3.4.1) stable; urgency=low
1607 The "Polishing easter eggs is probably a good idea" release.
1608 This is a bug fixes release only.
1612 * Fix a bug preventing the tasks from begin garbage collected.
1615 * Fix a bug occuring when a host involved in a communication fails.
1616 This was not detected properly by the other peer involved in the
1617 communication. Now, it's reported as a network error.
1620 * Warn the user about loop dependencies in data flow of DAX files
1621 * Obey the control-flow dependencies of DAX files
1624 * Add option "enable_smpi" allowing to not compile SMPI.
1625 Probably useful for the (Mac) users experiencing a build error here
1626 * Improve the detection of lua5.1 and ruby1.8
1628 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
1630 SimGrid (3.4) stable; urgency=low
1632 The "Easter in Cargese" release. Also known as (major changes):
1634 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
1635 ~> bindings were greatly improved
1636 ~> new tracing infrastructure for better visualization introduced
1638 * the "Welcome to configury modernity" release.
1639 ~> we switched from autotools to cmake, and improved our cdash
1642 A more detailled list of changes follow (full detail in svn log).
1644 Java Bindings: Various Cleanups
1645 * (install java-gcj-compat-dev on debian-like to use them)
1646 * Remove put/get: no need to export deprecated interface in Java
1647 Use send/receive instead.
1648 * Cleanup the examples and add a README per directory
1649 * Remove example autoDestination (that's the only way to go now)
1650 * Remove example explicitDestination (was a plain copy of basic)
1651 * Make JniException a runtime exception, so that there is no need to
1652 declare the fact that you may encounter such a beast. I guess that
1653 nobody will ever want to survive such error.
1654 * Create specific errors for each MSG case of failure:
1655 host failure, transfer failure, timeout, task cancelled
1656 * Cleanup the exceptions that may get thrown by each function
1657 * Other internal cleanups in Java bindings. Performance still bad :/
1658 Ruby and Lua Bindings: create them
1659 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
1660 * That's new and great, you should try them out.
1661 Same functionalities than Java bindings, only even less polished
1663 * Kill the useless "rate" argument of SD_task_get_execution_time()
1664 Everyone used to provide -1 as a value, it was not used, and the
1665 semantic of a possible use wasn't even clear.
1666 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
1667 either as comm costs or compute costs to mean that there is no
1668 such thing for that specific task.
1669 * Add a SD_task_set_name() function
1670 * Fix SD_task_unschedule() on typed tasks
1671 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
1672 * In DAX loader, accept useless 'level' attributes to <job> since
1673 LIGO DAGs have them (seem to be to ease graphical representation).
1675 * Add an example masterslave_mailbox.c using send/receive and not
1676 the deprecated put/get interface.
1677 * Kill the MSG_paje_output() function. It's a noop since 2 years.
1678 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
1680 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
1681 (declare MSG_USE_DEPRECATED to still have the old name)
1682 * Add a MSG_task_set_data() function
1683 * About trace replay (see examples/msg/actions):
1685 - Allow to work with splitted trace files for each process
1686 Give the specific trace file as argument of each process,
1687 and call MSG_action_trace_run(NULL)
1688 You can still have one merged file for all processes.
1689 - Fix implementation of collective operations
1690 * Allow task_execute() on 0-sized tasks (closes #10063)
1692 * This is the first release of SimGrid where SMPI is not considered
1693 beta anymore (even if some corners should still be improved)
1694 * Port over the new SIMIX_network submodule (internal refactoring)
1695 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
1696 * Implement more missing elements of the standard:
1698 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
1700 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
1701 MPI_Scan() MPI_Get_processor_name()
1702 - Added implementation of missing case for Alltoall (warning: it's
1703 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
1704 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
1705 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
1706 SMPI_MPI_Allgatherv()
1707 * Bug fixes include:
1708 - MPI_Waitsome() was broken
1709 - Allow relative includes in smpicc
1710 - Command line cfg argument 'reference_speed' was ignored...
1711 - Some functions did not properly lead to auto-benching of user code
1712 - smpicc passes -O2 by default (just like openmpi one)
1714 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
1715 * Bug fixes about timeouts during communications
1716 * add SIMIX_message_sizes_output() as a pimple to write to file the
1717 amount of messages per size. Use gnuplot to get histogram.
1718 Pimple because that's the only user-visible function of simix,
1719 defined directly in xbt.h (irk, sorry)
1721 - Add a SIMIX_sem_get_capacity() function
1722 - Fix interactions with processe resume/suspende
1723 - release_forever() was stupidly broken
1724 - Fix SIMIX_display_process_status() for processes in a semaphore
1725 - Make SIMIX_sem_block_onto() user-visible
1726 * Refactoring context stuff:
1727 - Use pseudo-OOP for better modularity
1728 - reimplement SIMIX_process_kill() without process_schedule() so
1729 that the latter can take as invariant that it is called from
1731 - Merge context_start into context_new for sake of simplicity
1733 * Add a Vivaldi network model, coded live during SUD'10 ;)
1734 * Rename configuration variables to start a hierarchy:
1735 o cpu_model -> cpu/model
1736 o network_model -> network/model
1737 o workstation_model -> workstation/model
1738 * New configuration variables:
1739 o network/bandwidth_factor: correction to bandwith
1740 o network/latency_factor: correction to latency
1741 o netwotk/weight_S: correction to the weight of competing streams
1742 * Add a long description to the models, that users can see with such
1743 argument on the command line: --cfg=cpu/model:help
1744 * --help-models display the long description of all known models
1746 * config: add the ability to set a default value after registration
1747 Does not override any previously set value (e.g. from cmd line)
1748 * dict: allow to have integer key and data.
1749 When so, you need to use the following functions
1750 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
1751 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
1752 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
1753 In contrary to regular dicts, the key is not malloced before copy.
1754 Mixing scalar and regular elements in the same dict is not tested
1756 * Allow to use xbt_dynar_shrink() to expend the dynar instead
1757 Tracing for Visualization:
1758 * SimGrid is now instrumented in order to generate a trace file for
1759 visualization analysis: to use it, need to compile SimGrid with the
1760 "tracing" option enabled, and instrument the program using SimGrid with
1761 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
1762 (among other functions).
1763 * The instrumentation only traces the platform utilization for now
1764 * Documentation to use the tracing functions and how to analyze the
1765 traces with the Triva tool is written.
1766 * More information about: SimGrid FAQ (in the section Tracing Simulations
1769 * We moved to cmake as default build system. Autotools support will
1770 be dropped soon. Check the FAQ for more info about how to use it.
1771 * Greatly improved our cdash/ctest interactions
1772 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
1773 * Added memory checking tests with valgrind; lot of memleak fixing.
1774 This may be the first release of simgrid with so few memory issues
1775 * Added code coverage tests.
1776 Our coverage is still improvable, but at least we see it on cdash.
1778 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
1780 SimGrid (3.3.4) stable; urgency=low
1782 The "Desktop Grid needs love too" release (also called Xmas release).
1784 Models improvements:
1785 * Major speedup in the maxmin system solving by using lazy evaluation
1786 Instead of solving completely the maxmin system at each iteration,
1787 only invalidate (and recompute) the modified parts.
1788 This new feature is enabled in default models but you can try to
1789 turn it on with "--cfg:maxmin-selective-update=1" for other models.
1790 * Cas01 IMproved as default CPU model
1791 This CPU model is the same Cas01 model, but it uses the
1792 maxmin-selective-update flag and a heap structure to manage
1793 actions on SURF kernel.
1794 It reduces the complexity to find the next action to finish and,
1795 consequently, it's faster than the old Cas01.
1796 This is the new default CPU model (Cas01).
1797 * Rename the old Cas01 model to Cas01_fullupdate
1798 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
1799 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
1800 * CpuTI (CPU Trace Integration)
1801 A new CPU model whose objective is simulate faster when using
1802 availability trace files.
1803 Instead of using a full featured, over engineered maxmin system for
1804 CPU modeling, this model does the pre-integration of traces files
1805 to calculate the amount of CPU power available, and so, executes
1806 faster than the old CPU models.
1807 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
1808 * Use LV08 as default network model since it gives better accuracy
1809 for small messages and shouldn't change things for big ones.
1810 Use --cfg=network_model:CM02 to get the previous behavior.
1813 ******************************************
1814 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
1815 ******************************************
1816 * The new CPU model may changes simulations!
1817 The point is that events occurring at the exact same timestamp
1818 are not scheduled in the same order with the old and new
1819 version. This may be enough to completely change the execution
1820 of simulations in some cases.
1821 * The new network model will change simulations!
1822 This new model is more realistic than the previous one, so you
1823 should consider redoing your old experiments with this model.
1824 Sorry for the inconvenience.
1827 * Introduce the supernovae compilation mode
1828 When compiled that way, the whole SimGrid (or almost) is put in a
1829 single compilation unit and compiled in one shoot.
1830 This is to help gcc which has difficulties to inline stuff from one
1832 The speedup seem to be above 15%, althrough more tests are needed on
1833 amd64 to confirm that gain.
1836 * Port of MSG's mailbox on top of SIMIX network
1837 The put/get mechanism was greatly simplified on the way.
1840 * New SIMIX network module. Provides:
1841 - Mailbox: rendez-vous mechanism to find with who you want to speak
1842 - Synchronous send/recv: easier and hopefully faster since the
1843 logic is handled in the maestro process directly now
1844 - Asynchronous send/recv: you dreamt of it? It's here now
1845 Too bad that nobody cared enough to propagate the change to MSG.
1846 * Add semaphores as SIMIX synchronization mechanism.
1849 * new function SD_daxload(char*) to load a DAX file
1850 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
1851 * Introduce typed tasks. Specify its kind and cost at creation.
1852 At scheduling, just give where it should be placed, and the cost
1853 for each involved resource is automatically computed.
1854 Existing constructors so far (more to come of course):
1855 - SD_task_create_comm_e2e() for end-to-end communication
1856 - SD_task_create_comp_seq() for sequential computation
1857 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
1858 * new function SD_task_dump() for debuging display
1859 * new function SD_task_dotty(task,FILE*) writing to file the info
1860 about the task in dotty format
1861 * SD_task_dependency_exists() can now cope with having one of its
1862 arguments NULL. If so, it tests whether the other argument has any
1864 * Add getters on list of preceding/following tasks:
1865 SD_task_get_parents(task) and SD_task_get_children(task)
1866 * Add getters on amount of workstations and list:
1867 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
1868 * Add getter on task kind: SD_task_get_kind(task)
1869 * Update the start_time and finish_time of tasks on completion/failure
1870 * Bugfix: Remove task from state swags when destroyed
1873 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
1876 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
1877 dynar with one separate thread per value of the dynar.
1878 * Change the prototype of xbt_thread_create(), sorry.
1879 Added a boolean parameter indicating whether we want to join this
1880 thread (used in SG only for now)
1881 * Implement xbt_thread_join and xbt_thread_yield in SG also.
1884 * GTNetS wrappers should now be usable again (and betterly tested too)
1885 * Fix a major regression from 3.2 where the timeout provided to
1886 MSG_task_put_with_timeout() was used as absolute time before which
1887 the comm should be done.
1888 * Start to fix the <cluster> tag.
1889 - Internal links should be good now (beside of the loopback, which
1890 use the private link instead)
1891 - paths to the external world is still rather broken
1892 - the <route:multi> tag is just broken. Actually that's brain-dead.
1893 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
1894 to make it less stupid
1895 ** Check your platform with teshsuite/simdag/platforms/flatifier **
1896 * Fix a source-level compatibility glitch from 3.2: after defining
1897 MSG_USE_DEPRECATED, you can use the old name
1898 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
1899 * Allow to compile from the SVN with automake 1.11
1900 * Fix some problems when using the "start_time" tag in deployment XMLs.
1901 * Fix #8569: XBT/synchro.h has redundant declarations
1902 * Fix #8563: MSG return values and exceptions
1903 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
1904 * Integrate patch #8636: Obey DESTDIR when installing documentation.
1905 Thanks to Robson Peixoto.
1906 * Fix a vicious bug in dictionaries inducing that some elements were
1907 not freed on xbt_dict_free()
1909 Portability report of this version:
1910 * Main portability targets:
1911 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
1912 on (amd64/i386/ia64)
1913 - mac leopard on i386
1914 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
1915 but nothing critical.
1916 * Other platforms: windows, AIX and others were not tested for this release
1918 Timing report of this version:
1919 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
1920 scenario parameters). From 8h to a few seconds in desktop grid settings.
1921 * Supernovae brings about 25% speedup on i386.
1923 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
1925 SimGrid (3.3.3) stable; urgency=low
1927 The "Need for Speed" release.
1929 The timings done to validate the 3.3.2 were faulty.
1930 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
1932 The problem was a conversion from a manually handled vector to
1933 xbt_dynar_t on the critical path.
1934 xbt_dynar_foreach calls functions, inducing stack management crap.
1936 We inlined these functions and xbt_dynar_foreach is now breath taking.
1937 We also inlined xbt_swag_belong on the way.
1939 Here are some approximate speedup measurements (on master/slaves
1940 simulations lasting between 10s and 20s each):
1941 3.3.1 -> 3.3.2: about same performance
1942 3.3.2 -> 3.3.3: 40% speedup
1943 3.3.1 -> 3.3.3: 40% speedup
1944 3.3.1 with inline patch -> 3.3.3: 30% speedup
1946 Our reading is that the refactoring which occurred in 3.3.2 made us
1947 suffer much more from the xbt_dynar_foreach low performance, but
1948 once we solved this, this refactoring proved to be very performance
1949 effective. From the 40% speedup, somehow, 10% are due to the
1950 inlining and 30% to the refactoring.
1952 That's a pitty that gcc cannot inline functions placed in other files
1953 alone. We have to choose between:
1954 - break the encapsulation (by putting private data structures and
1955 accessors in headers files to help gcc)
1956 - live with low performance
1957 - switch to a decent compiler such as icc (not quite possible).
1959 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
1961 SimGrid (3.3.2) stable; urgency=low
1963 The "Simplicity does not preceed complexity, but follows it" release.
1965 The main contributors of this release were (lexical order):
1966 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
1969 * Extract the routing logic into its own object.
1970 (was dupplicated in network.c and workstation_LV07.c;
1971 Allows to implement other ways of storing that info)
1972 => kill now useless network_card concept
1973 - Use dynar to represent routes (instead of void** + int*)
1974 - kill link_set (use surf_network_model->resource_set instead)
1975 - Add a command-line option to choose the routing schema to use
1976 - Add three new models:
1977 * Floyd (shortest path computed at initialization)
1978 * Dijikstra (shortest path recomputed all the time)
1979 * Cached Dijikstra (shortest path computed on need)
1980 All these models where contributed by Silas De Munck, and are
1981 described in his ICCS09 paper.
1983 * Simplify model declaration
1984 (less redirections, less function to write when defining a model)
1985 - Factorize stuff between models:
1988 surf_model_resource_set(model)
1989 surf_model_resource_by_name(model, name)
1990 - Unify the types of models in s_surf_model_t (using an union)
1991 - Embeed fields of common_public directly into s_surf_model_t
1992 - Rename model methods:
1993 action_free ~> action_unref
1994 action_change_state ~> action_state_set
1995 action_get_state ~> action_state_get
1996 - Change model methods into functions :
1997 (model)->common_public->action_use ~> surf_action_ref
1999 * Implement a generic resource; use it as ancestor to specific ones
2000 (allows to kill duplicated code in models)
2001 Drawback: timer command don't need no name nor properties;
2002 workstation_CLM03 don't need no properties
2003 (but I guess we can live with those few bytes wasted)
2005 * Improve the action object model
2006 - implement a constructor avoiding dupplicated code about field
2007 initialization in generic_action part.
2009 * Kill the SDP model: it has an external dependency, is deprecated
2010 in flavor of modern lmm models, and didn't compile since a while
2013 * Relocation of the context module from XBT to SIMIX.
2014 (the context were decoupled from the simix processes, duplicating a lot of code)
2015 => a lot of code was factorized
2016 - less overhead is introduced during scheduling
2017 - simpler API for the context factory
2018 - the logic for process creation,destruction and manipulation was simplified
2019 * Simplification of the s_smx_process_t data structure.
2020 => accesing the simix level data associated to a process is faster now,
2021 and the code is a lot more readable.
2024 * Implement some more MPI primitives:
2025 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
2026 -implementation: Bcast: flat or 2-ary tree (default),
2027 Barrier: 4-ary tree,
2029 Allreduce: Reduce then Bcast
2030 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
2031 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
2032 Alltoallv: flat tree, like ompi
2034 * Add support for optimized collectives (Bcast is now binomial by default)
2035 * Port smpirun and smpicc to OS X
2038 * Kill SD_link_get_properties: hard to maintain and makes very little sense
2039 Shout out if you used it.
2042 * Display the list of still queued messages in SG mode when existing
2046 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
2047 * Add xbt_graph_node_get_outedges() [Silas De Munck]
2048 * Add xbt_str_from_file(FILE*)
2049 * Add xbt_dict_get_key achieving a linear reverse search
2050 * Remove the context module
2052 Portability report of this version:
2053 * Main portability targets:
2054 - Linux(debian)/x86/context
2055 - Linux(debian)/x86/pthreads
2056 - Linux(debian)/amd64/context
2057 - Linux(debian)/amd64/pthreads
2058 On these, we still have the eratic breakages of gras/pmm and
2059 amok/saturate_sg reported in previous version. We still think
2060 that the tests are the cause of the fault, not the tested code.
2062 - Mac OSX Leopard/x86/context
2063 Still false negative in tesh autotesting.
2064 Smpi still fails, but this time because readlink does not accept -f
2065 Everything seems to work properly beside of that.
2068 - AIX version 5.3 (only tested contexts this time)
2069 Smpi still fails there because mktemp is not installed.
2070 Everything seems to work properly beside of that.
2072 I managed to compile it for the first time, but several breakages.
2073 Won't delay the release for this exotic platform.
2075 * Windows: it's still lagging behind. If you want to help, please
2078 Timing report of this version:
2079 This version seem to be more than 5% faster than 3.3.1 (on linux
2080 64bits with contextes). The gain is less than expected, we are
2081 investigating this for next release.
2083 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
2085 SimGrid (3.3.1) stable; urgency=low
2088 * Implement a --cfg-help to show existing configuration variables
2089 * Build chain do not require doxygen in maintainer mode
2092 * fix a bug on struct sizeof computation, which prevented the
2093 exchange of arrays of structs in some conditions
2094 - added a regression test about this in datadesc_usage
2095 * Allow the exchange of 0-long dynamic vectors.
2096 - for that, use -1 as indicator of dynamic size instead of 0
2097 - This implied to change any size from unsigned long to long,
2098 reducing a bit communication abilities, but I guess that with
2099 64bits being quite common, this is more than enough.
2100 - This also induce a protocol change, thus bumping network protocol
2101 version from 0 to 1 (if we have external users, we have to get
2102 clean on that point too ;)
2103 - added two regression tests about this in datadesc_usage
2104 * Be more verbose when propagating local exceptions
2105 This helps debugging.
2106 * Display the status of simulated processes when receiving SIGINT in
2110 * Allow to control the simulation from a trace file.
2111 New functions MSG_action_register() and MSG_action_trace_run()
2112 The first one allows to associate a function execution to each
2113 kind of action while the second one parses a trace file and
2114 triggers the corresponding actions within the system.
2115 For now, only a toy example is provided in examples/msg/actions
2116 * Add an exemple of process migration in examples/msg/migration
2117 * Fix a bug in task exchange which broke MSG_task_get_sender()
2118 Add a teshsuite regression test for that.
2119 [Bug: if MSG_task_get_sender() is called after sender exit,
2121 * Fix a bug which prevented suspend/resume to work properly
2122 * Display the status of simulated processes when receiving SIGINT
2123 This fixes a regression of v3.3. due to the introduction of SIMIX
2124 * Bug fixing in failure management:
2125 - trace could not start by a failure at time 0
2126 - failure during communications were not working
2129 * Add SIMIX_process_set_name() to change the name of the current
2130 process in the log messages.
2131 * Store smx_hosts in a dict since we only retrieve them by name
2132 * Move the configuration infrastructure to surf
2135 * Move the configuration infrastructure to surf
2138 * Massive internal cleanups:
2139 - Store internal structures on processes instead of hosts (allows
2140 to have more than one process per host, in addition of being more
2142 - Cleanup the initialization/finalization process
2143 - Kill a whole bunch of unneeded synchronization:
2144 processes run in exclusive manner within the simulator
2145 - Move queues from global tables to process data fields
2147 - now accept -platform and -hostfile arguments
2148 - Pass the right rank value to processes according to the hostfile
2149 * Compile the examples by default, and use them as regression tests
2150 * Implement MPI_Wtime()
2151 * Change the reference speed to a command line option
2154 * TCP_gamma can now be specified as command line option using
2155 --cfg=TCP_gamma:10000000.0
2156 * Change the --surf-path cmd line option into --cfg=path:
2159 * Also include strbuff from xbt.h public header
2160 * xbt_ex_display(): do not free the exception after displaying
2161 This allows to do more with the given exception afterward.
2162 Users should call xbt_ex_free() themselves.
2166 Portability report of this version:
2167 * Main portability targets:
2168 - Linux(debian)/x86/context
2169 - Linux(debian)/x86/pthreads
2170 - Linux(debian)/amd64/context
2171 - Linux(debian)/amd64/pthreads
2172 These targets fail about 1/10 of times on gras/pmm, but we believe
2173 that this is because of the test, not because of simgrid.
2174 amok/saturate_sg fails even more rarely, and the test may not be
2177 - Mac OSX Leopard/x86/context
2178 The test suite still spits tons of errors because some obscure
2179 force prevents us from removing the temporary directories
2180 arguing that they still contain some metadata I've never heard of.
2181 Smpi fails because seq is not installed.
2182 Everything seems to work properly beside of that.
2185 - AIX version 5.3 (both contexts and pthread)
2186 Smpi still fails there because mktemp is not installed.
2187 XML inclusions seems rosty on AIX.
2189 * Windows: it's still lagging behind. If you want to help, please
2192 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
2194 SimGrid (3.3) stable; urgency=high
2198 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
2199 [Malek Cherier & Mt]
2201 * Introduce the SIMIX module: factorize code between MSG and GRAS.
2204 Until now, GRAS were using MSG as an interface to SURF. It was
2205 quite difficult because both interface have several differences
2206 (MSG channels vs GRAS sockets were the most notable point).
2208 This also opens the gate to SMPI (which should occur soon) and speed
2209 up simulations by to 40% (even if it were not the main goal).
2211 **************************************
2212 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
2213 **************************************
2214 The point is that events occuring at the exact same timestamp are
2215 not scheduled in the same order with the old and new version. This
2216 may be enough to completely change the execution of simulations in
2217 some cases. Sorry for the inconvenience.
2219 * Cleanup and upgrade the XML format to push further scalability
2220 issues (check http://hal.inria.fr/inria-00256883/ for more info)
2222 * Improve the testing infrastructure with tesh. Now a very large part of
2223 the code is tested not only by being run but also by checking that the
2224 output match an expected output [Mt].
2226 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
2227 is really less memory-demanding, which should allow you to use
2228 larger files in SimGrid [AL].
2230 * Inform valgrind about our contextes, so that it becomes usable
2231 with the default (and more effecient) version of SimGrid
2232 [contributed by Sékou Diakite, many thanks]
2235 * Introduce a listener thread in charge of receiving incoming
2236 messages from the network. It allows to overlap communication and
2237 computation but most notably, it removes some stupid deadlocks due
2238 to the fact that so far, a process could not send and receive at
2239 the same time. This made most non trivial communication schema
2241 * Convert the PIDs from long int to int to match the MSG ones (and
2242 linux ones too) [Mt]
2243 * New function: gras_agent_spawn() to launch a new process on
2244 current host. Only working in simulation for now. [Mt]
2245 * New function: gras_os_hostport() returning a constant form (ie,
2246 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
2249 * Make the backtrace of exceptions more human readable [Mt]
2250 * New module: xbt/str [Mt]
2251 a ton of string utility functions (split, join, printf to a newly
2252 allocated buffer, trim, etc)
2253 * New module: xbt/hash [Mt]
2254 SHA1 hashing algorithm (more to come if needed)
2255 * New module: xbt/synchro [Mt]
2256 synchronization tools (mutex and conditions) working the same way
2257 in simulation and in real life (mainly useful for GRAS, but not
2259 * New module: xbt/queue [Mt]
2260 classical producer/consumer synchronization scheme
2261 * xbt_dynar_new_sync() creates a synchronized dynar. All access
2262 (using the classical functions will get serialized) [Mt]
2263 * Make dictionary internal table dynamic. No need to specify its size
2264 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
2266 * Make sure the log channels are organized as a tree under windows
2267 (because of ANSI C compatibility issue, any channel were child of
2268 root directly) [Mt].
2271 * Cleaned many thing in surf and fixed a few bugs [AL].
2272 * Add a nice command line configuration mechanism to compose models [AL].
2273 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
2274 the previous one (KCCFLN05). It relies on something that looks like
2275 a max-min sharing mechanism but cannot be written as such. A new solver
2276 was thus designed [AL].
2277 * Add a new solver to lmm. Based on Lagrange optimization and
2278 gradient-based descent, it enables to efficiently maximise systems s.a
2280 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
2282 This solver enables to propose two new network models for TCP Reno and
2283 TCP Vegas based on Low's work. These models still need to be fully
2284 tested though [Pedro Velho].
2287 * Bug fix in SD_simulate. Now the time bound given as argument is
2289 * Use the new parallel task model (ptask_L07) as default.
2290 * Use the SURF command line configuration mechanism.
2291 * 0-size tasks (for synchronization) should now work.
2293 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
2295 SimGrid (3.2) stable; urgency=high
2299 We still experience issues on this platform, but we believe that at
2300 least MSG is usable.
2302 GRAS API BREAKAGE (for simplification purpose, sorry):
2303 * the gras_msgtype_by_name is not used anymore. Instead of
2304 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
2305 you can write (and must)
2306 gras_msg_send(toserver, "request", &request);
2307 - If you still want to pass a gras_msgtype_t to the function (to cache
2308 the type and avoid the lookup time), use the gras_msg_send_() variant.
2309 - Impacted functions:
2310 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
2311 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
2312 * The callbacks are now expected to return 0 when everything went well
2313 (just like the main() function)
2315 GRAS new features and improvements:
2316 * New module mechanism where user code can use per process globals [Mt]
2317 This is similar to gras_userdata_*() functions, but for libraries. It
2318 factorize some code developped over and over in the examples and AMOK.
2319 It has still to be documented and used (only amok/peermanagement is
2321 * Fix a vicious bug in the TCP buffering mechanism which leaded to message
2322 loss when they were small enough to fit into the buffer and sent quickly
2323 enough so that they can all get received in one shoot.
2324 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
2325 if not found. Use the *_or_null() variant for the old semantic.
2326 * In gras_msg_handle, do not discard messages without callback.
2327 They are probably messages to be explicitly awaited later (ie, proofs of
2328 mis-synchronization in userland since they are sent before being awaited)
2329 No big deal usually.
2330 * gras_socket_meas_send/recv: semantic changed!
2331 The numerical arguments used to be (1) the total amount of data to send
2332 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
2333 messages. This was need for the fool willing to send more than MAXINT
2334 bytes on quite fat pipes.
2337 * Do really rename the hostmanagement module to peermanagement. [Mt]
2338 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
2339 but this is rather new and this was documented in the module
2340 documentation (poor excuses, I admit)
2341 * Bandwidth measurement semantic changed! This follows the changes to
2342 gras_socket_meas_send/recv explained above.
2345 * A sequential mode has been added to the workstations. When a workstation
2346 is in sequential mode, it can execute only one task, and the other tasks
2347 are waiting in a FIFO. [Christophe Thiery]
2350 * The KCCFLN05 workstation model now handles parallel tasks. It is the
2351 model for SIMDAG. [Christophe Thiery]
2352 * Bug fix in the maxmin solver: Some values were close to 0 instead of
2353 equal to 0, which caused some bad behaviors in
2354 saturated_constraint_set_update. I now use a threshold mechanism like in
2358 * When running manually src/testall, you select specific units [Mt]
2359 testall is the result of our cunit mechanism, and should replace all
2360 the scripty thingy around since bash don't run easily on billware.
2362 * A mallocator system has been added. [Christophe Thiery]
2363 Mallocators allow you to recycle your unused objects instead of freeing them
2364 and allocating new ones.
2366 Documentation update:
2367 * FAQ reworking + New FAQs:
2368 - "Valgrind spits tons of errors!" [Mt]
2369 - "How to repport bugs" [Mt]
2370 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
2371 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
2372 - Communication time measurement within MSG [AL]
2373 - I experience weird communication times when I change the latency [AL]
2374 * GRAS tutorial [Mt]
2376 - an introduction to the framework and to the used communication model
2377 - an initiatic tour introducing the most proheminent features:
2379 . Lesson 0: Installing GRAS
2380 . Lesson 1: Setting up your own project
2381 o Part 2: Message passing
2382 . Lesson 2: Exchanging simple messages
2383 . Lesson 3: Passing arguments to the processes (in SG)
2384 . Lesson 4: Attaching callbacks to messages
2385 . Lesson 5: Using globals in processes
2386 . Lesson 6: Logging information properly
2387 . Lesson 7: Using internal timers
2388 . Lesson 8: Handling errors through exceptions
2389 . Lesson 9: Exchanging simple data
2390 . Lesson 10: Remote Procedure Calling (RPC)
2391 . Lesson 11: Explicitely waiting for messages
2392 . Recapping of message passing features in GRAS
2393 - A HOWTO section containing:
2394 o HOWTO design a GRAS application
2395 More are due, of course. They will come latter. In the meanwhile, you can
2396 check the examples which are still here.
2398 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
2400 SimGrid (3.1) stable; urgency=high
2404 There was a stack corruption somewhere, visible only when optimizing
2405 with these versions. [Vince]
2408 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
2409 module that enabled to play with Directed Acyclic Graphs. It is built
2410 directly on top of SURF and provides an API rather close to the old
2411 SG. Some old codes using SG are currently under rewrite to check that
2412 all needful functions are provided. [Christophe Thiery]
2415 * Complete rewrite of the KCCFLN05 workstation model. It is now an
2416 extension of the classical CLM03 model that gracefully handles
2417 failures. This is now the default model for MSG and GRAS. It doesn't
2418 handle parallel tasks yet though. [AL]
2419 * Bug fix: Weights were not correctly set in the network part.
2420 WARNING: This may have resulted in incorrect results with simulations
2421 where there are more than one flow on a given link. [AL]
2424 * After a (long ?) discussion on simgrid-devel, we have decided that the
2425 convention we had on units was stupid. That is why it has been decided
2426 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
2427 WARNING : This means that all previous platform files will not work as
2428 such with this version! A warning is issued to ask users to update
2430 A conversion script can be found in the contrib module of the CVS, under
2431 the name contrib/platform_generation/surfxml_update.pl [MQ]
2434 * Bug fix: Processes were started in reverse order, wrt deployment file.
2435 WARNING: if your code relies on this bug, please fix it. [AL]
2436 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
2437 being executed on two different locations. [AL]
2438 * Bug fix: Failures are now better supported thanks to Derrick's tests
2439 (there was many failure situations I hadn't thought of and that weren't
2440 correctly handled). [AL]
2441 * New function: MSG_host_is_avail indicates you whether a given m_host_t
2445 * New! a real RPC mechanism, as it ought to be since too long. [MQ]
2446 Exception occurring on server-side are propagated back to client (!).
2448 API CHANGE: the callback changed their prototype. Change:
2449 int my_handler(gras_socket_t expeditor, void *payload_data) {
2451 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
2452 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
2454 * New! function: gras_msg_handleall to deal with all messages arriving
2455 within a given period.
2456 * New! function: gras_socket_server_range to get a server socket in a
2457 range of port numbers (ease to avoid port number conflicts) [MQ]
2458 * New! gras processes display their backtrace when they get a SIGUSR1
2459 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
2460 Sweet to debug RL processes [MQ]
2464 - Do not force experiment sizes to be expressed in kb, or it becomes
2465 impossible to measure the latency this way (needs one byte-long tests)
2466 WARNING: this changes the amok_bw_* function semantic. [MQ]
2467 - Implements the link saturation stuff. [MQ]
2468 * Peer management module:
2469 New! module factorizing code that we wrote over and over [MQ].
2472 * New module: cunit (my jUnit implementation in ansi C) [MQ]
2473 - Test units are placed directly into the library code, they get extracted
2474 automatically and placed into the src/testall binary.
2475 - Convert most of the XBT tests to this system.
2476 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
2477 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
2478 live in the same C code. This required to change a little bit the API
2479 of surfxml parsing but shouldn't be an issue for end-users. [AL]
2480 * New module: sparse graph structure with basic algorithms (this is work
2481 in progress and the API is not considered to be frozen yet). [AL]
2482 * Display more information on backtraces: source line & function names are
2483 now displayed just like valgrind does (rely on addr2line tool) [MQ]
2484 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
2485 * Reworked a little bit some #include statements to load only required
2486 headers. Some user code that relied on SimGrid to include stdlib or
2487 stdio may need to include it by themselves. [AL]
2488 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
2490 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
2491 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
2492 but I guess that almost nobody used those parts. [MQ]
2494 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
2496 SimGrid (3.0.1) stable; urgency=low
2499 * Unfortunately, I had missed 5 misnamed functions:
2500 xbt_fifo_item_t xbt_fifo_newitem(void);
2501 void xbt_fifo_freeitem(xbt_fifo_item_t);
2502 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
2503 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
2504 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
2505 They're now deprecated. Please use their new versions:
2506 xbt_fifo_item_t xbt_fifo_new_item(void);
2507 void xbt_fifo_free_item(xbt_fifo_item_t);
2508 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
2509 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
2510 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
2512 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
2513 * Documentation: xbt_log module unmercifully reworked [MQ]
2514 * Bugfix: there was a problem with the ending of contexts with
2515 the pthread backend. It caused some weird deadlock or behavior
2516 depending on the pthread implementation. [AL]
2517 * Bugfix: get the exceptions raised in the simulator repport where
2518 and why they come from when they are not catched in time [AL, MQ]
2521 * Bugfix: Do repport the error when two non-connected hosts try to
2522 exchange data (Thanks to Flavien for stumbling into this one) [AL]
2525 * Add additionnal checkings on communications. Assert that two
2526 communicating hosts are connected by a set of links... [AL]
2529 * Add additionnal checkings on channel values in communication [AL]
2530 * New: MSG_task_get_source to see on which host a task was generated [HC]
2531 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
2532 the number of tasks waiting to be received on channel and sent
2534 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
2535 waits for the first task coming from a given host.. [AL]
2537 GRAS new functionnalities: [MQ]
2538 * Enhance the parsing macro to allow the size of multidimentional objects
2539 to be given thru annotations.
2540 * New example (and documentation): Matrix Multiplication a la RPC
2541 (as when I was young!) and fix a bunch of bugs found on the way.
2543 GRAS performance improvements: [MQ]
2545 * Reduce the amount of cbps creation/destruction by making it static to
2546 datadesc_send/recv() and using a (newly created) cbps_reset (based on
2549 * Change libdata to a set so that we can search for stuff by ID (and thus
2550 reduce the insane amount of dict lookups)
2553 * Actually implement gras_datadesc_copy() so that we don't have to mimick
2554 RL communication on top of SG since it's so uneffective.
2555 It may also be used for inter-thread communication in RL, one day.
2556 * Use gras_datadesc_copy() to exchange messages on top of SG
2558 - improve message exchange performance on top of SG
2559 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
2560 * Don't exchange on the network the size of the used part of buffer,
2561 instead, specify the possible buffer size to read().
2563 - reduces the amount of read/write calls (one pair per exchange)
2564 - reduces the amount of exchanged data (the size)
2565 - allows to retrieve all arrived data on receiver side, if we don't need
2566 it right now (subsequent read will peek the buffer)
2567 - allows the receiver to proceed with the begining of the stream before
2568 everything is arrived
2569 - make it possible to build an iov transport (using readv/writev)
2571 - take care of the data with non-stable storage (like stacked data),
2573 * If possible, TCP send uses vector I/O (when writev() is here)
2574 - Don't use it for receive since we send data sizes and data on the
2575 same stream, so we wouldn't be able to chain large amount of chunks
2576 before having to flush the stuff to read the size.
2577 * Rework the transport plugin mechanism to simplify it and reduce the
2578 amount of pointer dereferencement when searching for the right function
2581 * I guess that now, we do almost as few system calls as possible while
2582 doing as few data copy as possible.
2584 To improve it further, we could try to send all the sizes first and then
2585 all the data (to use iov on receiving size), but it's only a partial
2586 solution: when you have 2 dimensional data, the sizes of the second
2587 dimension is data of the first dimension, so you need 3 streams.
2589 I'm not sure the potential performance gains justify the coding burden.
2591 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
2593 SimGrid (3.00) stable; urgency=high
2596 * New! Give the possibility to hijack the surf parser and thus bypass
2597 MSG_create_environment and MSG_launch_application. Have a look at
2598 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
2600 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
2602 SimGrid (2.96) unstable; urgency=low
2607 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
2608 This deprecates the xbt_error_t mechanisms.
2609 It modifies (simplifies) all XBT and GRAS API.
2610 MSG API keeps unchanged (exceptions raised by XBT are catched from
2611 within MSG and masked with existing error handling facilities)
2614 * New! Add a FATPIPE model. [AL]
2615 * New! Add a parallel task model. [AL]
2616 * New! Add automatically a loopback interface (in the default
2617 network model) if none was precised.
2620 * Bugfix: MSG_process_resume now works with the current running process.
2622 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
2623 * Modification of MSG_task_get_compute_duration. Once a task has been
2624 processed, the value returned by this function is now equal to 0. [AL]
2625 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
2626 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
2627 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
2628 of a m_task. For now, MSG_task_cancel only works with computation
2630 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
2631 of the processor (in Mflop/s) regardless of the current load on the
2633 * API Change: use proper naming convention for MSG_getClock and
2634 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
2636 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
2637 This function changes the priority of a computation task. This priority
2638 doesn't affect the transfer rate. A priority of 2 will make a task
2639 receive two times more cpu power than the other ones. This function
2640 has been added to suit the needs of Nguyen The Loc and hasn't been that
2641 much tested yet. So if it fails, please report it and send me your code.
2643 * API Change: removed all functions and types that were marked "deprecated"
2644 since many months. Renamed MSG_global_init_args to MSG_global_init.
2646 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
2648 SimGrid (2.95) unstable; urgency=low
2651 * Steal some nice code to GNU pth to fix context detection and usage [AL]
2652 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
2653 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
2656 * Bugfix: Allow absolute paths for platform description files [MQ]
2657 * Bugfix: do free the variables after use. Leads to drastic performance
2659 * Implement max_duration (ie, timeouts) on resources [AL]
2662 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
2664 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
2665 the needed support (timeouts) [AL]
2668 * Implement measurement sockets. You can now get the bandwidth between two
2669 hosts thanks to AMOK (see below). [MQ]
2670 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
2671 dynar over the network (yeah) [MQ]
2672 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
2673 * simple/static token-ring example. [Alexandre Colucci and MQ]
2674 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
2675 in place before [MQ]
2678 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
2679 type parsing. "short" and "long" modifiers were also ignored; other
2680 modifier (such as reference level) are still ignored. [MQ]
2681 * Embeed the buffer size within the buffer itself on SG. [MQ]
2682 That way, send() are atomic and cannot get intermixed anymore (at least
2683 the ones which are less than 100k; bigger messages still have the issue)
2684 * Array size pushed by the field, not by the field type (or each
2685 and every long int will push stuff to the cbps) [MQ]
2686 * use select() to sleep since it allows to portably sleep less than one
2689 GRAS (minor cleanups)
2690 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
2693 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
2694 * type category 'ignored' killed as it was never used and were difficult
2696 * whether a type can cycle or not is now a flag, leaving room for more
2697 flags (as "ignored", if we feel the need one day ;)
2698 * Rename raw sockets to measurement sockets since "raw" has another
2699 meaning in networking community.
2702 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
2703 and offers features not belonging to GRAS but that most applications
2704 need. One day, it may be a set of plugins loadable at runtime.
2705 * New module: bandwidth
2706 bandwidth measurement between arbitrary nodes running this module. [MQ]
2708 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
2710 SimGrid (2.94) unstable; urgency=low
2712 The first beta release of SimGrid 3 !
2716 * Update the main page and the FAQ. Adding references to gforge.
2719 * Add a gras_os_getpid function.
2722 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
2723 * Extend the logs so that they also print PID, hostname, date, ... if
2725 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
2726 and kill the old version which were in testsuite/
2727 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
2731 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
2732 for users. Instead, each programming environment (GRAS, MSG,...) use it
2733 when needed to provide such a feature to users.
2734 Don't shortcut the mechanism or you will also shortcut the virtualization
2735 you need on the simulator.
2739 * Cleanups in configury with regard to compile optimization/warning flags.
2740 Also add -fno-loop-optimize to any powerpc since it's the optimization
2741 killing gcc (< 3.4.0).
2742 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
2743 needed by MSG examples complications
2744 * Borrow configury beautifications from PHP
2747 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
2748 warning (thanks loris for stumbling into this one).
2749 * Bugfix: stop loading private headers (gras_config.h) from the public
2753 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
2754 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
2755 RL would imply a DNS resolver, which is *hard* to do in a portable way
2756 (and therefore delayed).
2757 * Implement a real timer mechanism and use it in timing macros. This allows
2758 to avoid rounding errors and get a 0.000005 sec precision in timing
2759 macros. While I was at it, various cleanups:
2760 - allow to declare more than one timed section per file (fix a stupid bug)
2761 - move some private declaration to the right place
2762 - merge conditional execution and timing macros into emulation module
2763 - document the module
2764 - make sure the module cleanups its mess on gras_exit
2765 * Documentation improvements:
2766 - (new) how to compile applications using GRAS
2767 - (new) emulation support (timing macros)
2769 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
2771 SimGrid (2.93) unstable; urgency=low
2773 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
2776 - Use Paje properly where used. Still to be sanitized properly.
2777 - Portability fix: Add an implementation of the contexts using pthread
2781 - Add xbt_procname(): returns the name of the current process.
2782 Use it to show the current process's name in all logging.
2784 - fix detection of older flex version and the reaction, since we do
2785 depend on modern ones (we use lex_destroy)
2786 - Better separation of SG and RL in the libs: remove all simulation code
2787 from libgras. As a result, this lib is now only 200k when stripped.
2788 Some of the xbt modules may also be duplicated (two sets and such) and
2789 should be cleaned/killed before SG3.
2790 - Insist on using xlC on AIX because of weird problems involving gcc there.
2791 - Cleanup the make remote stuff. This is now done by scripts
2792 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
2793 mainly for our private use, but we're working on changing them to user
2796 - Bugfix: flush the socket on close only if there is some *output*.
2797 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
2799 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
2802 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
2804 SimGrid (2.92) unstable; urgency=low
2806 Alpha 3 on the path to SimGrid 3
2810 - New! First try of benchmarking macros.
2811 - New! First try so that gras_stub_generator generate deployment and
2812 remote compilation helpers.
2814 - Bugfix: Initialization fix in msg_test.
2818 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
2820 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
2822 - API Change: gras_os_sleep to take the amount of seconds as a double.
2823 Accepting an int was error prone since it was the only location where
2824 seconds were coded as such. It leaded to damn rounding errors.
2825 - Bugfix: Hard to belive that timers ever worked before this.
2827 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
2829 SimGrid (2.91) unstable; urgency=low
2831 Alpha 2 on the path to SimGrid 3
2835 - Bug fix in the lmm_solver.
2837 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
2838 through the function MSG_paje_output.
2839 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
2840 - It is possible to bound the rate of a communication in MSG with
2841 MSG_task_put_bounded() (was already in the previous version but I had forgotten
2842 to write it in the changelog).
2843 - Bug fix to let GRAS run on top of MSG until we move it directly on top
2848 - Various cleanups to the autotools stuff
2849 - Begin to move Gras examples to examples/gras/
2850 - Let make distcheck work again (yeah!)
2852 - documentation overhauled using doxygen.
2853 gtk-doc-tools is dead in SimGrid now.
2854 - Automatically extract all existing logging categories, and add the list
2855 to the documentation (long standing one, to say the less)
2857 - Cleanup the known architecture table. Reorder the entries to group what
2858 should be, and use a more consistent naming scheme.
2859 (some of the test dataset are still to be regenerated)
2860 - New! Allow library to register globals on each process just as userdata
2862 This is implemented using a xbt_dict and not a xbt_set, so we loose the
2863 lookup time (for now).
2864 Use it in msg and trp.
2865 This cleans a lot the internals and helps enforcing privacy of the
2866 headers between the gras components.
2867 - New! Add a timer mechanism, not unlike cron(8) and at(1).
2868 - Bugfix: gras_os_time was delirious in RL.
2869 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
2871 - Reenable GRAS now that it works.
2873 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
2875 SimGrid (2.90) unstable; urgency=low
2877 Alpha 1 on the path to SimGrid 3
2879 * It is a long time since the last release of SimGrid. I'm sorry about
2880 that but as I had told you, I was rewriting a lot of things. I apologize
2881 to those who had been reporting bugs to me and that I had not answered.
2882 If your bug is still in the new version, please tell me. Here is a
2883 summary of the main changes.
2885 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
2886 lead by Martin Quinson. As a consequence SimGrid gains a lot in
2887 portability, speed, and a lot more but you'll figure it out later.
2888 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
2889 I wanted to release the new MSG as soon as possible and I have
2890 broken GRAS, which is the reason why, for now, only MSG is fully
2891 functional. A laconic description of these projects is available
2892 in the documentation.
2894 * REVOLUTION 2: I have removed SG and I am now using a new simulation
2895 kernel optimized for our needs (called SURF but only the developers
2896 should use it). Hence, MSG is now roughly 30 times faster and I think
2897 that by rewriting a little bit MSG, I could event speed it up a little
2898 bit more. Beside the gain in speed, it is also much easier to encode a
2899 new platform model with SURF than it was with SG. More to come...
2901 * REVOLUTION 3: I have tried to change a little as possible the API of
2902 MSG but a few things really had to disappear. The main differences
2903 with the previous version are :
2904 1) no more m_links_t and the corresponding functions. Platforms are
2905 directly read from a XML description and cannot be hard-coded
2906 anymore. The same format is used for application deployment
2907 description. The new format is described in the documentation.
2908 Have a look in tools/platform_generation. There is a tiny script
2909 that converts from the old platform format to the new one. Concerning
2910 the application deployment format, parsing the old one is tricky.
2911 I think most of you should however be able to convert your files. If
2912 it is really an issue, I can write a C code that does the conversion.
2914 2) the toolbox tbx does not exist anymore. We now have a library
2915 with much more data-structures but without the hash-tables (we have
2916 dictionaries that are much faster).
2918 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
2920 *****************************************************************************
2921 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
2922 * don't feel like converting the oldies. (Mt) *
2923 *****************************************************************************
2926 Version 2.90: "the long awaited one"
2927 - Finished rewriting and debugging MSG. Rewrote the documentation.
2928 - disable GRAS for now since it needs to be ported to the newest SG
2931 - Finish the port to windows (using mingw32 for cross-compile)
2934 - Main loop and datastructures of SURF. A cpu resource object is
2935 functional. Surf can thus be used to create cpu's with variable
2936 performance on which you can execute some actions.
2938 2004-11-15 Martin Quinson
2939 - Port to ARM. Simply added the alignment and size descriptions. Should
2940 work, but the ARM machines are so slow that I didn't had the opportunity
2941 to 'make check' over there yet.
2943 2004-11-15 Arnaud Legrand
2944 - Trace manager now written. It uses a heap structure and is therefore
2945 expected to be efficient. It may however be speeded up (particularly
2946 when many events occur at the same date) by using red and black
2947 trees. One day maybe...
2948 - Max-min linear system solver written. It uses a sparse matrix
2949 structure taking advantage of its expected use. Most operations are
2950 O(1) and free/calloc are called as few as possible. The computation of
2951 the minimum could however be improved by using a red and black tree
2954 2004-11-03 Arnaud Legrand
2955 - Rename every gras_* function that was in xbt/ to its xbt_
2957 - Add a heap and a doubly-linked list to xbt
2958 - Added a dichotomy to the dictionaries. make check works as well before
2959 so I assume that the patch is correct. I do not know however if things
2960 run effectively faster than before now. :)
2962 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
2963 SimGrid, and the version number is bumped to 2.x
2965 2004-10-29 Martin Quinson
2966 - Introduction of the remote errors.
2967 They are the result of a RMI/RPC on the remote machine.
2968 ErrCodes being scalar values, you can't get the host on which those
2969 errors did happen. Extending the error mechanism as in Gnome is possible.
2970 No idea yet whether it is a good idea.
2972 2004-10-28 Martin Quinson
2973 - Interface revolution: the Starred Structure Eradication.
2974 I used to do typedef struct {} toto_t; and then handle *toto_t.
2975 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
2976 - ???_t is a valid type (builded with typedef)
2977 - s_toto_t is a structure (access to fields with .)
2978 - s_toto is a structure needing 'struct' keyword to be used
2979 - e_toto_t is an enum
2980 - toto_t is an 'object' (struct*)
2982 typedef struct s_toto {} s_toto_t, *toto_t;
2983 typedef enum {} e_toto_t;
2984 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
2985 s_toto_t) is private.
2987 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
2988 so that it can set the variable to NULL. It was so for dicts and sets,
2989 it changed for dynars.
2991 - Fix a bunch of memleaks in dict_remove
2992 - Fix a bug in sg/server_socket opening: it failed all the time.
2994 2004-10-07 Martin Quinson
2995 - Speed up dynar lookup operation a bit.
2997 gras_dynar_get is dead.
2999 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
3000 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
3001 (which gives you the address of the stored data).
3003 gras_dynar_get_as is an helpful macro which allows you to retrieve a
3004 copy of the data using an affectation to do the job and not a memcpy.
3006 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
3007 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
3009 It does not really speedup the dynar test because they are
3010 setting elements all the time (and look them seldom). But the dict does
3011 far more lookup than setting.
3013 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
3015 2004-10-05 Martin Quinson
3016 - Allow to (en/dis)able the cycle detection at run time.
3018 Whether we should check for cycle or not is now a property of each
3019 datatype. When you think there may be some cycle, use datadesc_cycle_set.
3020 datadesc_cycle_unset allow to remove this property when previously set.
3022 Note that the cycle detection is off by default since it impacts the
3023 performance. Watch the data you feed GRAS with ;)
3025 This property is hereditary. Any element embedded in a structure having it
3026 set have it set for the time of this data exchange.
3028 You should set it both on sender and receiver side. If you don't set it on
3029 sender side, it will enter an endless loop. If you forget on receiver
3030 side, the cycles won't be recreated after communication.
3032 - Header reorganization.
3033 Kill gras_private.h, each submodule must load the headers it needs.
3035 2004-10-04 Martin Quinson
3036 - Interface revolution: do not try to survive to malloc failure.
3038 Now, gras_malloc and friends call gras_abort() on failure.
3039 As a conclusion, malloc_error is not a valid error anymore, and all
3040 functions for which it was the only gras_error_t return value are
3041 changed. They now return void, or there result directly.
3042 This simplify the API a lot.
3044 2004-09-29 Martin Quinson
3045 - Re-enable raw sockets.
3046 Created by gras_socket_{client,server}_ext;
3047 Used with gras_raw_{send,recv}
3050 It should allow to kill the last bits of gras first version soon.
3052 This is not completely satisfactory yet (duplicate code with
3053 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
3056 - Simplify transport plugin (internal) interface by not passing any
3057 argument to _server and _client, but embedding them in the socket
3060 2004-09-28 Martin Quinson
3061 - Finish the port to AIX.
3062 autoconf was my problem (segfault within the malloc replacement
3063 function. No idea why)
3065 2004-09-16 Martin Quinson
3066 - Fix some size_t madness on 64bit architectures.
3068 2004-09-08 Martin Quinson
3069 - Reduce the number of system headers loaded, overload some more system
3070 calls (such as malloc to cast the result of the system one, and work
3072 - Fix and reintroduce the config support
3074 2004-09-07 Martin Quinson
3075 - Source code reorganization to allow Arnaud to surf all over there.
3076 - Allow to document the logging categories.
3077 - Remove all uppercase from logging categories and useless cleanup in names.
3079 2004-08-18 Martin Quinson
3080 Version 0.6.2 (protocol not changed; API changed)
3081 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
3082 gras_error_t), and NULL when not found. Functions expecting a msgtype
3083 as argument (msg_wait; msg_send) deal with NULL argument by providing a
3084 hopefully usefull message.
3085 - Portability to prehistoric sparcs again
3087 2004-08-17 Martin Quinson
3088 Version 0.6.1 (protocol not changed; ABI not changed)
3089 - prealloc some buffers to speed things up
3091 2004-08-11 Martin Quinson
3092 Version 0.6 (protocol not changed; ABI expended)
3093 - The parsing macro can deal with the references, provided that you add
3094 the relevant annotations (using GRAS_ANNOTE(size,field_name))
3096 2004-08-09 Martin Quinson
3097 Version 0.5 (protocol not changed; ABI changed)
3098 - Allow to off turn the cycle detection code in data exchange at
3099 compilation time. It should be at run time, but I'm short of time (and
3100 the config stuff is still broken). That way, we keep dict out of the
3101 critical path, which is good because the performance is poor:
3102 - search not dichotomial yet
3103 - dynar give no way to access their content and memcpy everytime
3104 - In composed data description (struct, ref and so on), stop foolness of
3105 keeping the subtype's ID, but store the type itself. This keeps sets out
3106 of the critical path, which is good since they rely on dynar and
3107 dictionnaries. The only loose of that is that we cannot detect the
3108 redeclaration of a structure/union with another content (but I'm not sure
3109 the code detected well this error before anyway). We still can detect
3110 the redefinition discrepancy for the other types.
3111 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
3112 it breaks the code because of type-punning used all over the place).
3113 This breaks on all non-gcc architectures (for now).
3115 All those changes (plus the buffer of last time) allow me to gain 2 order
3116 of magnitude on cruel tests consisting of 800000 array of integers on two
3117 level of a hierarchical structure (200 secondes -> 4 secondes)
3120 - the selector of reference must now return the type it points to, not
3121 the ID of this type.
3123 2004-08-06 Martin Quinson
3124 Version 0.4 (protocol changed; ABI not changed)
3125 - Allow to pass --gras-log argument to processes in simulation mode. Really.
3126 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
3127 - Implement a buffer transport, and use it by default (it relies on tcp in
3128 real life and on sg in simulation).
3129 That's a bit hackish since I had a new field to the structure to store
3130 its data without interfering with the subtype ones. Inheritance
3131 is tricky in C. And that's a kind of reverse inheritance with one class
3132 derivating two classes. Or maybe a game with java interfaces. Anyway,
3133 that's damn hard in C (at least).
3134 Moreover, I got tired while trying to ensure plugin separation and
3135 genericity in SG mode. MSG wants me to do weird things, so let's go for
3136 cruel hacks (temporarily of course ;).
3137 See comment in transport_private.h:71
3138 - do not include all the _interface headers in private but in the files
3139 which really need them (to cut the compilation time when they are
3142 2004-07-26 Martin Quinson
3143 Version 0.3 (protocol not changed; ABI changed)
3144 - Major overhault of the datadesc interface to simplify it:
3145 - shorted the function names:
3146 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
3147 - add a trivial way to push/pop integers into the cbps without malloc.
3148 This allows to make really generic sub_type description, which simply
3149 pop their size of the stack.
3150 - add a function gras_datadesc_ref_pop_arr() which does what users want
3151 most of the time: Declare a dynamic array (which pops its size of the
3152 stack) and declare a reference to it. Poor name, but anyway.
3153 - kill the post-send callback, add a post-receive one
3155 2004-07-23 Martin Quinson
3156 Version 0.2 (protocol changed; ABI changed)
3157 - add some testing for cpbs in the test cases, and fix some more bugs.
3158 This invalidate again the little64 data file, since I cannot regenerate
3160 - remove an awfull optimization in the logging stuff, allowing me to:
3161 - understand it again
3162 - learn gcc how to check that the argument match the provided format
3163 - fix all errors revealed by gcc after that
3164 - internal keys of dict are not \0 terminated. Deal with it properly in
3165 loggings instead of segfaulting when the user want to see the logs :-/
3167 2004-07-22 Martin Quinson
3168 - Fix some stupid bug preventing cbps (callback postit) from working
3170 2004-07-21 Martin Quinson
3171 - Some documentation cleanups
3172 - remove the useless last argument of msgtype_declare
3173 - rename the Virtu functions to fit into the 'os' namespace
3174 - move headers src/include -> src/include/gras/ and stop fooling with
3175 gras -> . symbolic link
3176 - make distcheck is now successful
3178 2004-07-19 Martin Quinson
3180 - Build shared library also
3181 - Install html doc to the right location
3182 - stop removing maintainer files in make clean
3183 - build tests only on make check
3185 2004-07-13 Martin Quinson
3187 - No major issue in previous version => change versioning schema
3188 - Re-enable little64 convertion test now that Abdou kindly regenerated the
3189 corresponding dataset.
3191 2004-07-11 Martin Quinson
3193 - Get it working with any kind of structure (we can compute the padding
3194 bytes remotely for all the architectures I have access to)
3195 - Implement the structure parsing macro (still not quite robust/complete)
3196 - Improvement to the remote testing toysuite
3198 2004-07-10 Martin Quinson
3199 [autoconf mechanism]
3200 - get ride of a bunch of deprecated macros
3201 - actually run the test for two-compliment, not only compile it :-/
3202 - test whether the structures get packed (and bail out if yes. Damn.
3203 Alignment is a serious matter)
3204 - test whether the structures get compacted (but respecting the alignment
3205 constraints of each types)
3206 - test whether the array fields of structures can straddle alignment boundaries
3208 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
3209 (took me 2 hours to find that bug, looking at the wrong place)
3210 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
3211 before sending/receiving and are used to compute the offsets of fields
3212 - Given that padding size depend even on compiler options, keep track of
3213 alignment and aligned_size only for the current architecture. Not a big
3214 deal since we send structure fields one after the other (seems
3216 - Add the datastructure used for IEEE paper by the PBIO guys to the test
3217 program, let it work on linux/gcc/little32. portability todo.
3219 2004-07-08 Martin Quinson
3220 - import and improve remote compilation support from FAST
3221 - make sure make check works on half a dozen of machines out there
3223 2004-07-07 Martin Quinson
3224 Let's say it's version 0.0.3 ;)
3225 - Implement conversions (yuhu!)
3226 - Let it work on solaris (beside conversion, of course)
3227 - Stupid me, using rand() to generate the conversion datatests in not wise.
3229 2004-07-06 Martin Quinson
3230 - Let make dist work, since I'm gonna need it to compile on remote hosts
3231 - Let Tests/datadesc_usage write the architecture on which the file was
3232 generated as first byte.
3233 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
3234 architecture descriptions.
3235 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
3236 on those architectures.
3237 - Optimization: send/recv array of scalar in one shoot
3239 2004-07-05 Martin Quinson
3240 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
3242 - Plug a whole bunch of memleaks
3243 - each process now have to call gras_{init,exit}. One day, their log
3244 settings will be separated
3245 - Continue the code factorisation between SG, RL and common in Transport.
3247 2004-07-04 Martin Quinson
3249 - Redistribution between SG and RL.
3250 We wanna have to accept in SG, so move accepted related parts of RL in
3251 the common part. (more precisely, the dynar of all known sockets is no
3252 more a static in transport.c, but part of the process_data)
3254 [gras_stub_generator]
3255 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
3257 2004-07-03 Martin Quinson
3258 - Create a new log channel tbx containing dict, set, log, dynar (to shut
3259 them all up in one shot)
3261 - Fix the ugly case of reference to dynamic array.
3262 - New (semi-public) function gras_datadesc_size to allow the messaging
3263 layer to malloc the needed space for the buffer.
3265 - gras_socket_close now expect the socket to close (and not its address to
3266 put NULL in it after it). This is because the socket passed to handlers
3267 is one of their argument (=> not writable).
3269 - propagate the interface cleanup from last week in datadesc, ie remove a
3270 superfluous level of indirection. User pass adress of variable
3271 containing data (both when sending and receiving), and not of a variable
3272 being a pointer to the data. Let's say that I like it better ;)
3273 The price for that is constructs like "int msg=*(int*)payload" in
3274 handlers, but it's a fine price, IMHO.
3276 - Let it work in RL (yuhu)
3278 2004-06-21 Martin Quinson
3280 - porting SG plugin and SG select to new standards (works almost).
3281 - plug memleaks and fix bugs around.
3284 - cleanup the prototype of data recv and force users to specify when they
3285 want to handle references to objects. Test case working even for cycles.
3286 - plug memleaks. Valgrind is perfectly ok with this.
3288 2004-06-12 Martin Quinson
3290 - cleanup the separation between plugin and main code in plugin creation
3292 2004-06-11 Martin Quinson
3294 - Reput hook for raw sockets, needed for BW experiments
3295 - kill a few lines of dead code
3296 [Data description] Interface cleanup
3297 - gras_datadesc_by_name returns the searched type or NULL.
3298 That way, no variable is needed to use a type desc once, which makes
3300 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
3301 two parameters were strings (field name, type name), leading to
3303 [Dicos] Interface cleanup
3304 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
3305 This is consistant with the dynar API.
3307 2004-04-21 Martin Quinson
3309 - Porting to new standards.
3311 - interface cleanup.
3312 There is no bag anymore, no need to take extra provision to mask the
3313 pointers behind "ID".
3314 Better splitup of functions between files create/exchange/convert.
3315 This is still a bit artificial since convert and receive are so
3316 interleaved, but anyway.
3318 - add a queued message list to procdata (the ones not matching criteria
3320 - factorize some more code between SG and RL wrt procdata
3322 - use gras_exit in example to track memleaks
3323 - get rid of gs_example now that GS is properly integrated into gras
3324 - update run_test to integrate the latest tests (datadesc)
3326 - rename WARNINGn macros to WARNn since it prooved error-prone
3328 2004-04-19 Martin Quinson
3330 - register init/exit functions within gras module mechanism
3331 - send/receive function.
3332 Convertion is not implemented, but short-cutted if not needed.
3333 struct/array elements are sent one by one (instead of block-wise), but
3334 nobody really cares (yet). Get a prototype before optimizing.
3335 - tests (using a file socket) for DD send/receive on:
3336 - base types: int, float
3337 - array: fixed size, string (ie ref to dynamic string)
3338 - structure: homogeneous, heterogeneous
3339 - chained list, graph with cycle
3340 Believe it or not, valgrind is not too unhappy with the results. The
3341 cycle happily segfaults, but the others are ok. And I'm sick of pointers
3345 - Bugfix when using a filename explicitely (instead of '-')
3347 2004-04-09 Martin Quinson
3349 - factorize more code between RL and SG in socket creation
3350 - Complete the implementation and tests of:
3352 o file (only in RL, and mainly for debugging)
3354 I lost 3 days to design a portable address resolver, and then decided
3355 that the prototype mainly have to run on my box.
3356 Addressing portability too early may be like optimizing too early :-/
3358 - use gras_init in the Tests instead of the crappy parse_log_opt
3359 (the latter function is removed)
3360 [Conditional execution]
3361 - New functions: gras_if_RL/gras_if_SG (basic support for this)
3362 [Code reorganisation]
3363 - Get rid of libgrasutils.a since it makes more trouble than it solves.
3364 Build examples against the RL library, since there is no way to disable
3365 its creation for now.
3367 For information, the beginning of coding on GRAS was back in june
3368 2003. I guess that every line has been rewritten at least twice since