1 ----------------------------------------------------------------------------
3 SimGrid (3.25.1) UNRELEASED (target: March 20 2020 or v3.26 on 3/26/20)
5 Important user-visible changes:
6 - Surf precision default value is now 1e-9, instead of 1e-5. This was changed as
7 several users had difficult to understand issues when using high bandwidth or
8 small latency events. The new value was already the default for SMPI and
9 should not cause too much performance hit. It can change some simulation
10 timings if simulation was skipping a lot of small events (which was actually
11 an issue of said simulation). The value can still be changed back using
12 --cfg=surf/precision:1e-5.
13 - On some network models (L07, CM02, LV08), an implicit loopback link is created
14 for local communication. Default bandwidth was 500MBps and latency was 15µs,
15 which was rather bad. Default values have been changed to 10GBps and 0 latency.
16 Options network/loopback-lat and network/loopback-bw have been added to adapt
17 these values if needed. Network and routing models already providing separate
18 loopbacks (clusters and such) are not impacted by this change.
19 - SMPI now adds 16 bytes of header to each message sent, in order to simulate
20 metadata that are added to each MPI message by MPI libraries (tag,
21 src/dest, and communicator information). This may change simulation times
22 for very small message sizes, but should be more realistic.
25 - the on_exit() of each actor is also executed when the simulation deadlocks.
28 - Update proxy apps coverage of new ECP apps: 60+ apps now tested nightly on
29 https://framagit.org/simgrid/SMPI-proxy-apps
30 - MPI/IO: supports names starting with "./"
31 - Fortran: many MPI/IO bindings, support for MPI_UB/LB, C MPI_INT/FLOAT/DOUBLE
33 - smpicc/cxx/ff/f90 now will actually perform definition checks at link time. When
34 building shared libraries, this may cause issues, so environment variable
35 SMPI_NO_UNDEFINED_CHECK can be added to disable this.
38 - The return type of the sg_actor_on_exit() callbacks is now 'void'
39 (int value was previously ignored)
42 - LTO is now enabled for Intel/clang compilers.
43 - LTO behavior on GCC can be parameterized using LTO_EXTRA_FLAG in cmake.
44 Setting it to "auto" will use all available cores, while setting it to n will
45 use n cores to speedup link step (usage: cmake -DLTO_EXTRA_FLAG=4).
48 - Many MSG tests were converted to the new S4U's interface in C, that
49 was extended for that.
52 - Remove obsolete option --cfg=contexts/parallel-threshold.
54 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
55 (FG: issues on Framagit; GF: issues on GForge; GH: issues on GitHub)
56 - FG#41: Add sg_actor_create C interface
57 - FG#43: xbt::random needs some care
58 - FG#48: The Impossible Did Happen (yet again)
59 - FG#50: Suspending an actor executed at the current timestamp fails
60 - FG!24: Documentation and fix for xbt/random
61 - FG!35: Add a modeling hint for parallel links in doc
62 - FG!36: [xbt/random] Read/Write the state of the RNG
63 - GF#18137: Allow different stack sizes?
64 - GH#128: Parallelization of simulation with --cfg=contexts/nthreads
65 - GH#139: Allow pthread creation in SMPI
66 - GH#336: Packet-level simulation using SMPI?
67 - GH#346: [SMPI] error while loading shared libraries: libsimgrid.so
68 - GH!337: Fix link_energy plugin for wifi platforms
69 - GH!339: Add Mailbox set_receiver method to python binding
71 ----------------------------------------------------------------------------
73 SimGrid (3.25) February 2. 2020 (aka 02 02 2020)
75 The Palindrom Day Release.
77 Important user-visible changes:
78 - Improve the Python usability (stability and documentation).
79 - A nasty synchronization bug was ironed out, see also below.
80 - Python's doc was organized as a separate tree, now integrated with C++.
81 - C bindings of S4U were not part of the doc.
82 - The C++ doc was also improved as methods are now split by theme.
83 - Further deprecate MSG: you now have to pass -Denable_msg=ON to cmake.
84 - This is mandatory to use the Java bindings.
85 - OFF by default; The plan is to completely remove MSG by 2020Q4 or 2021Q1.
86 - SimDAG++: Automatic dependencies on S4U activities (experimental)
87 - Some features are already implemented but not all of them
88 - Cannot block an activity until it's scheduled on a resource
89 - No heterogeneous wait_any() that would mix Exec/Comm/Io activities.
90 - See examples/s4u/{io,exec,comm}-dependent for what's already there.
93 - Upgrade documented Java dependency to Java 8 (earlier versions don't work).
94 - Drop support for Viva/Triva (old visualization tools), hence removed
95 TRACE_get_node_types() and TRACE_get_edge_types() functions.
98 - Require pybind11 version 2.4.
99 - Greatly improve locking during context switches with Python.
100 - Declaring Python callbacks to this_actor::on_exit is now working.
101 - No more tests are failing currently, even on win32.
104 - Actor: Merge signals on_migration_start/end into on_host_change
105 - Actor: Rename migrate() into set_host()
106 - Disk: Allow users to get the read and write nominal bandwidth values
107 - Exec: Implement wait_for(timeout)
108 - Io: Implement wait_for(timeout)
111 - Parse errors now raise a simgrid::ParseError that you may want to catch.
114 - In simgrid::kernel::resource::Model, the methods next_occuring_event*() have
115 been renamed to fix a spelling error. As usual, the previous definitions are
116 kept with a deprecation warning. However, to avoid runtime errors, it is now
117 forbidden to override these deprecated methods in a derived class. Please use
118 the new names immediately if you need to override them.
121 - Remove unused parameter 'free_ctn' for xbt_dict_set() and xbt_dict_set_ext().
122 - Drop unused functions for dicts and dynars: xbt_dict_cursor_get_elm,
123 xbt_dict_get, xbt_dict_get_elm, xbt_dict_get_ext, xbt_dict_get_key,
124 xbt_dict_remove, xbt_dict_reset, xbt_dynar_compare, xbt_dynar_dump,
125 xbt_dynar_foreach_ptr, xbt_dynar_free_data, xbt_dynar_free_voidp,
126 xbt_dynar_init, xbt_dynar_insert_at_as, xbt_dynar_merge,
127 xbt_dynar_remove_n_at, xbt_dynar_replace, xbt_dynar_search, xbt_dynar_set.
128 - New module: random, providing classical random numbers generators.
131 - New option : "smpi/auto-shared-malloc-thresh" which sets a value for
132 allocations' size above which they are considered "shared" by default (as if
133 they were performed through SMPI_SHARED_MALLOC macros).
134 Default = 0 = disabled feature.
135 Note : malloc, calloc and free are now overriden by smpicc/cxx by default.
136 This can cause some troubles if codes are already overriding these. If this
137 is the case, defining SMPI_NO_OVERRIDE_MALLOC in the compilation flags can
138 help, but will make this feature unusable.
139 - Input check is now performed much more consistently and outputs precise
140 warnings for each error found
141 - New supported calls : MPI_File_set_view, MPI_File_get_view
142 - MPI I/O now only supports disks, as storage is discontinued.
143 - MPI I/O allows opening files without specifying absolute path
144 - Note : SMPI configuration options are now initialized by smpi_init_options()
145 call, which should be called if SMPI is not being used through smpirun.
147 Fixed bugs (FG#.. -> framagit bugs; FG!.. -> framagit merge requests):
148 - FG#9: Python bindings crashing
149 - FG#39: Missing s4u::Comm::wait_any_for example
150 - FG#42: Add support for ThreadSanitizer (TSan)
151 - FG!19: Removing RngStream
152 - FG!20: A module for RNG calls
153 - FG!21: Choice between ad-hoc and standard distributions implementations
155 - FG!25: Fix link in Mutex doc
156 - FG!26: Fix links in SMPI interface doc
157 - GH#31: [MC] please provide an option to make MPI_Send asynchronous
158 - GH#305: Unscheduled tasks are still excuted
159 - GH#313: smpirun: manual outdated w.r.t. --help
160 - GH#321: [S4U] Get task remaining work ratio
161 - GH#323: Crash when an actor turn off his physical host
162 - GH#335: Missing links on dragonfly example svg
163 - https://lists.gforge.inria.fr/pipermail/simgrid-user/2019-November/004653.html:
164 MPI_Cart_sub was not working properly. Kudos to Jonathan Borne for the report.
166 ----------------------------------------------------------------------------
168 SimGrid (3.24) October 9. 2019
170 The Clean Disk Release.
173 - Introduce a s4u::Disk interface to manage the newly introduced <disk>
174 tag. s4u::Disk is called to supplant s4u::Storage in a near future. It
175 thus becomes the default resource to execute I/O operations. Examples
176 and the file system plugin have been modified to use disks instead of
177 storage elements. Storage can still be used but is doomed to disappear.
178 Users are thus adviced to update their simulators accordingly.
179 - Barrier::wait returns SG_BARRIER_SERIAL_THREAD for (only) one actor
180 for consistency with pthread_barrier_wait()
181 - Host::get_englobing_zone() returns the englobing netzone
182 - Actor::on_destruction is now called in the destructor
183 Actor::on_termination new signal called when the actor terminates
185 - Global signals are now part of the Engine:
186 - on_platform_creation: after config settings, before the XML parsing
187 - on_platform_created: right after the XML parsing
188 - on_time_advance: each time the clock advances
189 - on_simulation_end: after simulation, before cleanups
190 - on_deadlock: as the name implies.
192 - sg_{actor,host,link}_{data,data_set}() now all exist.
193 Use them to attach user data to the object and retrieve it.
196 - Introduce an experimental Wifi model. It sounds reasonable
197 according to the state of the art, but it still has to be properly
198 validated, at least against ns-3 if not against reality.
199 - Improved the usability of ns-3. Several bugs were ironed out.
200 - host_energy: Wattage was expressed as 'idle:oneCore:allCores'.
201 It is now expressed as 'idle:epsilon:allCores' to properly model the
202 consumption of non-whole tasks on mono-core hosts. More info in the doc.
205 - convert a new set of functions to the S4U C interface and move the old MSG
206 versions to legacy (MSG_process_self*, MSG_process_{un}ref, ...)
209 - Fortran bindings for DVFS have been removed.
210 - Add support for MPI_Irsend, MPI_Rsend, MPI_Rsend_init, MPI_Bsend,
211 MPI_Ibsend, MPI_Bsend_init, MPI_Buffer_attach, MPI_Buffer_detach
212 - SMPI can now be selected by cmake's find_module(MPI) with
213 MPI_C_COMPILER, MPI_CXX_COMPILER, MPI_Fortran_COMPILER variables.
214 - Add support for MPI Errhandlers in Comm, File or Win. Default errhandler is now
215 MPI_ERRORS_ARE_FATAL, so codes which were sending warnings may start failing.
216 - trace-call-location can be used with TI traces, and replayed, and is compatible
217 with smpi/comp-adjustment-file.
218 - sleep events are now correctly traced/replayed.
219 - Default for trace-call-location is now to use file names and not full paths.
220 To revert to previous behavior (in case of collision of filenames), option
221 "smpi/trace-call-use-absolute-path" can be set to yes.
224 - Use the included xxHash as an hash implem when C++14 is usable.
225 - Option model-checker/hash was removed. This is always activated now.
226 - New option smpi/buffering controls the MPI buffering in MC mode.
227 - MPI calls now MC_assert() that no MPI_ERR_* code is returned.
228 This is useful to check for MPI compliance.
231 - New section on plugins: how to define a new one, and existing ones.
234 - xbt_mutex_t and xbt_cond_t are now marked as deprecated, a new C interface
235 on S4U is already available to replace them by sg_mutex_t and sg_cond_t.
238 - Introduce the <disk> tag as a replacement of the <storage>, <storage_type>,
239 and <mount> tags. The rationale is finish to decouple what should be handle
240 by SimGrid kernel (i.e., resources and activities) from plugins built in
241 user space (e.g., the file system plugin). This new tag currently accepts
242 only three attributes (id, read_bw, and write_bw). All the other information
243 that was declared with the storage related tags now has to be expressed as
244 properties. An example of platform using this new tag is available at
245 examples/platforms/hosts_with_disks.xml
248 - 'expect signal' can now accept more than one potential signal.
250 Fixed bugs (FG#.. -> framagit bugs; FG!.. -> framagit merge requests):
251 - FG#28: add sg_actor_self (and other wrappers on this_actor methods)
252 - FG#29 and FG#33: provide a new C API to mutexes and condition variables
253 - FG#30: convert MSG_process_{un}ref to sg_actor_{un}ref
254 - FG#31: per-actor data
255 - FG#34: SG_BARRIER_SERIAL_THREAD?
256 - FG#35: model-checker does not like buster-produced binaries
257 - FG!13: MC: complete workaround in the error msg seen on modern systems
258 - FG!15: execute_flops now logs compute
259 - FG!16: Fix the ns-3 bindings when several flows are simultaneously finishing
260 - FG!17: ns-3: unblock the right number of communications + others issues
261 - FG!18: Improving the performance of the ns-3 bindings
262 - GH#189: Energy consumption of parallel tasks
263 - GH#219: Error in the throughput of TCP transfer
264 - GH!330: Minor polishing of English: Configuring_Simgrid
265 - GH!331: Fix a doc error about actors (Tutorial_algorithms)
266 - GH!332: Add '-O0' flag for: cmake -DCMAKE_BUILD_TYPE=Debug
267 - GH!334: Rework energy plugin, again
269 ----------------------------------------------------------------------------
271 SimGrid (3.23.2) July 8. 2019
274 - Nicer introduction page.
275 - Migrate the "Deploy your application" page to the new doc.
276 - Move Java as a subtree of MSG.
279 - Rename simgrid::TimeoutError to simgrid::TimeoutException.
282 - Drop xbt_dynar_sort_strings().
285 - Really fix FG#26: Turning off a link should raise NetworkFailureException
286 - FG#27: Wrong exception thrown to wait_any when link is turned off
287 - GH#328: Java: Canceling multiple tasks in a single vm/host
289 ----------------------------------------------------------------------------
291 SimGrid (3.23) June 25. 2019
293 The Exotic Solstice Release.
296 - SunOS and Haiku OS support. Because exotic platforms are fun.
297 - Stop setting random seed with srand48() at initialization.
298 - Use addr2line as a fallback for stacktraces when backtrace is not available.
299 - Build option -Denable_documentation is now OFF by default.
300 - Network model 'NS3' was renamed into 'ns-3'.
303 - Simgrid can now hopefully be installed with pip.
306 - wait_any can now be used for asynchronous executions too.
309 - New log appenders: stdout and stderr. Use stdout for xbt_help.
310 - Drop xbt_dict_dump.
313 - SMPI now reports support of MPI3.1. This does not mean SMPI supports all MPI 3 calls, but it was already the case with 2.2
314 - MPI/IO is now supported over the Storage API (no files are written or read, storage is simulated). Supported calls are all synchronous ones.
315 - MPI interface is now const correct for input parameters
316 - MPI_Ireduce, MPI_Iallreduce, MPI_Iscan, MPI_Iexscan, MPI_Ireduce_scatter, MPI_Ireduce_scatter_block support
317 - Fortran bindings for async collectives.
318 - MPI_Comm_get_name, MPI_Comm_set_name, MPI_Count support.
321 - Remove option 'model-check/record': Paths are recorded in any cases now.
322 - Remove option 'model-check/sparse-checkpoint': Checkpoints are now
323 always sparse. That's an immense gain in memory, and can even be
324 faster because of cache effects. So there is no need to clutter the
325 code to allow the user to go for the unefficient mode.
328 - Remove the lagrange-based models (Reno/Reno2/Vegas). The regular
329 models proved to be more accurate than these old experiments.
331 Fixed bugs (FG=FramaGit; GH=GitHub -- Please prefer framagit for new bugs)
332 - FG#1: Broken link in error messages
333 - FG#2: missing installation documentation
334 - FG#3: missing documentation in smpirun
335 - FG#6: Python bindings not available on PyPI
336 - FG#7: simple cmake call requires doxygen
337 - FG#8: make python bindings an optional dependency
338 - FG#10: Can not use MSG_process_set_data from SMPI any more
339 - FG#11: Auto-restart actors forget their on_exit behavior
340 - FG#12: -Denable_lto=OFF doesn't disable LTO
341 - FG#13: Installs unstripped file 'bin/graphicator'
342 - FG#14: Installs the empty directory 'doc/simgrid/html'
343 - FG#15: Setting -Denable_python=OFF doesn't disable the search for pybind11
344 - FG#17: Dead link in doc (pls_ns3)
345 - FG#20: 'tesh --help' should return 0
346 - FG#21: Documentation link on http://simgrid.org/ broken
347 - FG#22: Debian installation instruction are broken
348 - FG#26: Turning off a link should raise NetworkFailureException exceptions
349 - GH#133: Java: a process can run on a VM even if its host is off
350 - GH#320: Stacktrace: Avoid the backtrace variant of Boost.Stacktrace?
351 - GH#326: Valgrind-detected error for join() when energy plugin is activated
353 ----------------------------------------------------------------------------
355 SimGrid (3.22) April 1. 2019
357 The Easter Christmas Release (this one is somewhat late).
360 - We are excited to introduce the SimGrid/S4U interface to your neighborhood
361 - Not complete yet: asynchronous activities (amongst others) are still missing
362 - Still ongoing: the interface may change in the future. We need more
363 testers! Please report any glitches.
364 - No new project using Java should start now. Please switch to Python.
367 - Some of the internal cleanups may lead to speed improvements:
368 - The hard limitation on the amount of simulated actors with
369 Java+Mac was removed. Now, the available memory is the only limit.
370 - Our refcounting was tidyied, leading to 10% speedups in some cases.
371 - We are still working on making our code robust to the actor kills
372 and hosts' churn. Things are improving, but it's not perfect yet.
373 - Replaced our own code to display a backtrace (that was forking addr2line)
374 with the Boost.Stacktrace library.
375 You won't see your backtraces without this optional dependency.
376 - Bump cmake dependency to 3.5 (provided by Ubuntu 16.04).
377 - Stop setting random seed with srand() at initialization.
380 - In <host> and <peer>, 'availability_file' is now 'speed_file'.
381 XML file version remains 4.2 since old files are still compatible.
384 - Process termination which was broken at version 3.21 has been repaired.
385 - Expose host load plugin: loadInit, getCurrentLoad, getComputedFlops, getAvgLoad
386 - Hide the examples into examples/deprecated. New users should use Python.
389 - Drop MSG_process_create_from_stdfunc() from the API.
390 This C++ function was a pimple in the C API, made necessary at some
391 point by the Java bindings. This is fixed now.
392 - Hide the examples into examples/deprecated. New users should use S4U.
393 - MSG_process_create and MSG_process_attach now crash if the host used
394 to run this process is off.
395 - Fix the protype of MSG_process_on_exit()
396 Now use (int,void*) callbacks instead of (void*,void*) ones.
397 The implementation was ways too messy to actually work, I guess.
400 - Change the way SMPI_SAMPLE_* macros work to avoid invalidating cache
401 too often and provide more accurate timings.
402 - Add -gdb, -lldb, and -vgdb shortcuts to help debug MPI codes with smpirun
403 - MPI_Alltoallw support
404 - Partial MPI nonblocking collectives implementation: MPI_Ibcast, MPI_Ibarrier,
405 MPI_Iallgather, MPI_Iallgatherv, MPI_Ialltoall, MPI_Ialltoallv, MPI_Igather,
406 MPI_Igatherv, MPI_Iscatter, MPI_Iscatterv, MPI_Ialltoallw.
407 - MPI_Request_get_status, MPI_Status_set_cancelled, MPI_Status_set_elements
409 - Basic implementation of generalized requests (SMPI doesn't
410 allow MPI_THREAD_MULTIPLE) : MPI_Grequest_complete, MPI_Grequest_start
413 - Drop sg_cmdline. Please use xbt_cmdline instead.
414 - Drop the C xbt_os_mutex_t; Use the C++11 std::mutex.
415 - Drop the C xbt_os_sem_t; Use the C++ xbt::OsSemaphore.
416 OsSemaphore is implemented in a portable way with C++11 threads.
417 This should allow much more threads to be created at the same time,
418 allowing Mac and Java users to simulate many more actors.
419 - Implement the 'thread' factory with std::thread instead of xbt ones.
420 It is not possible to set the stack size with threads anymore, but
421 -fsplit-stack is the way to go nowadays when using threads.
422 - Drop the xbt_os_thread_t module (now unused)
423 - Drop xbt_ex_display(), use simgrid::xbt::log_exception() instead.
424 - Drop xbt_str_join_array().
425 - Drop cunit, use Catch2 instead.
428 - Many cleanups in the kernel::activity namespace. This was long
429 overdue, and shall open the path to many future endeavors.
432 - #132: Java: a process can not shut down its own host
433 - #220: S4U: detached send causes exception if sender terminates soon after sending
434 - #261: Document the parameters of parallel execution's constructor
435 - #300: [s4u] BarrierPtr is missing
436 - #314: SMPI args internal cleanup
437 - #316: Fix a bug related to the CPU utilization of multi-core VM
438 - #318: Invalid trace file when using option --cfg=tracing/smpi/display-sizes:yes
439 - #324: S4U: Attempting to create an actor on turned off host segfaults instead of throwing
440 - #325: Turning off a host has different behavior on sleeping actors and computing actors
442 ----------------------------------------------------------------------------
444 SimGrid (3.21) October 3. 2018
446 The Restarting Documentation (TRD) Release.
449 - Convert the user manual to Sphinx for improved usability.
450 Unstable version now hosted on https://simgrid.frama.io/simgrid
451 Many glitches remain; stay tuned.
452 - Restrict the Doxygen reference API to the installed header files.
453 (documenting all internals this way is overkill + doxygen scales badly)
454 - New tutorial on S4U (highly inspired from the old MSG one, but with
455 a git repository to fork as a starting point, and a docker image)
456 - Started but not finished a SMPI tutorial inspired from the JLPC'14 one.
457 - The Developper manual is still to be converted (not compiled until then)
458 - Some parts are still missing in this conversion (such as the
459 platform and deployment sections) while others were blindly converted
460 and would need more love (such as the configuration flags).
461 Things will certainly further improve in the future releases.
464 - Fully reimplement auto_restart mechanism that was utterly broken
465 (fix #22, #131 and #281 that were all very related)
466 - Implement semaphores (fix #303 and #291)
467 - When creating an actor from a function and its parameters,
468 move-only parameters are not allowed anymore, as it would prevent
469 the actor to be restartable if its parameters are consumed on run.
470 - s4u::Io: IOs go asynchronous as activities. New methods in s4u::Storage:
471 - io_init(sg_size_t, s4u::Io::OpType) to create a READ or WRITE asynchronous
472 IO operations that can be started, waited for, or canceled as a regular
474 - read_async(sg_size_t) and write_async(sg_size_t) which are wrappers on
478 - Rename 'power' and 'power_used' variables into 'speed' and 'speed_used'
479 - New host variable: 'core_count'
482 - Remove xbt_os_thread_specific features
483 - Remove portability wrapper to condition variables
484 - Remove xbt_os_thread_yield()
487 - MPICH collective selector now mimics MPICH 3.3b
488 - OpenMPI collective selector now mimics OpenMPI 3.1.2 (default "tuned" setting)
489 - MPI_Init(NULL,NULL) is now allowed
490 - smpi/wtime option now injects time in gettimeofday or clock_gettime calls
491 - Command-line arguments should now be handled properly in Fortran simulations
492 - MPI Attributes and related callbacks should work in Fortran
493 - Apps using C + Fortran should now work
494 - MPI_* calls now check for non MPI_SUCCESS return values and emit warnings
495 - Support MPI_Error_String
498 - Due to an internal bug, Msg.run() must now be your last line.
499 We hope to fix it in a future release, and we are sorry for the inconvenience.
502 - #22: Process autorestart seem to only work with CAS01 cpus
503 - #56: Feature request: dynamic SMPI replay
504 - #93: simgrid should not eat --help
505 - #111: How to change the loopback link characteristics?
506 - #116: Platform cluster radical
507 - #117: Platform cluster/host order
508 - #129: Replay_multiple on steroid
509 - #131: Java : autostart does not work
510 - #143: Setting a breakpoint at a given time
511 - #235: Network energy models should be integrated
512 - #264: Add ptask L07 resource tracing
513 - #271: Dynamic and manual replay of SMPI traces
514 - #279: Breakpoints option uses time deltas instead of absolute time
515 - #281: Daemonized actor no longer daemonized after an auto-restart
516 - #282: TIT convertor erase traces when using absolute path in the trace list file
517 - #285: segfault when a s4u actor kills itself with msg process tracing activated
518 - #286: Pajé traces are not exposing the number of cores
519 - #287: Command-line parsing should stop when encountering '--'
520 - #288: MPI_Init(NULL, NULL)
521 - #289: Improve documentation of Actor::on_destruction and this_actor::on_exit()
522 - #290: Method to check if a mailbox has a message ready to be consumed
523 - #291: [s4u] semaphores do not seem available yet
524 - #294: Alltoall collective implementation of mpich
525 - #295: Starting a Host as OFF is not supported
526 - #296: DTD too permissive
527 - #299: Add a s4u barrier example
529 ----------------------------------------------------------------------------
531 SimGrid (3.20) Released June 24. 2018
533 The proxy snake_case() release.
536 - The whole API is now using snake_case() instead of mixing it with camelCase.
537 Compatibility wrappers in place for one year.
538 - We took the opportunity to increase the consistency of the API.
539 Please report any remaining glitches.
540 - New function simgrid::s4u::Host::get_actor_count:
541 Returns the number of actors running on a specific host.
544 - SMPI is now tested with ~45 proxy apps from various sources, with none or
545 only minor patching needed: check https://github.com/simgrid/SMPI-proxy-apps
546 - Replay: The replay file has been re-written in C++.
547 - Replay: Tags used for messages sent via MPI_Send / MPI_Recv are now
548 supported. They are stored in the trace and used when replayed.
549 - Basic support of MPI_Cancel. Robustness not guaranteed.
550 - Support of MPI_Win_allocate_shared, MPI_Win_shared_query, MPI_Comm_split_type
551 (only for MPI_COMM_TYPE_SHARED).
552 - New option: smpi/privatize-libs, to add external shared libs to be privatized
553 by SMPI. They will be copied locally and loaded separately by each process.
554 Example --cfg=smpi/privatize-libs:"libgfortran.so.3;libscalapack.so".
555 - Tracing: add tracing for MPI_Start, Startall, Testall, Testany
556 - Interception of getopt, getopt_long and getopt_long_only calls to avoid issues
557 with internal index optind with multiple processes. Only works if MPI_Init has
559 - Fortran: SMPI builds a mpi.mod file which should allow use of "use mpi"
560 syntax without preprocessing tricks.
563 - Change --cfg=tracing/msg/vm to --cfg=tracing/vm as virtual machine
564 behavior tracing is no longer limited to MSG
565 - TIT (Time Independent Traces): We finally support tags. Unfortunately,
566 this means that traces now need to be updated or re-obtained; both Irecv
567 and Isend lines in your traces have now in total 5 mandatory fields:
568 <rankid> <command> <to/from rankid> <tag> <size>
569 To update your traces, it suffices to add a 0 for the tag here.
570 - TIT now also supports waiting for a distinct request via MPI_Wait.
571 Wait/Test now wait for a specific request, not just the last one that was
572 issued. This unfortunately means another update, because we need to
573 identify which request you want to wait for. We do this via the
574 triplet (sender, receiver, tag), which needs to be added:
575 <rankid> <command> <sender> <receiver> <tag>
576 - Actions are now in lower case (e.g., "allReduce" becomes "allreduce").
577 New script simgrid_convert_TI_traces.py: upgrade your TI traces.
580 - The deprecation of MSG is ongoing (but this should not impact you).
581 Many MSG functions are now simple wrappers on the C API of S4U. If
582 you wish to convert your code to S4U, find the S4U counterparts of
583 your MSG calls in src/msg/msg_legacy.cpp.
584 - MSG can still be used, but won't evolve anymore.
587 - Allow to run the Link energy plugin from the command line with
588 --cfg=plugin:link_energy
589 - Rename Energy plugin into host_energy
590 - Rename Load plugin into host_load
593 - Add parameter --cfg=simix/breakpoint to raise a SIGTRAP at given time.
594 - kill simix::onDeadlock() that was somewhat dupplicating s4u::on_deadlock()
595 - Improve performance when handling timeouts of simix synchros.
598 - Config: the C API is now deprecated (will be removed in 3.23), and
599 the C++ API has been slightly improved.
602 - Fix several build issues on OSX.
603 - Move simgrid_config.h to simgrid/config.h (old header still working)
606 - #143: Setting a breakpoint at a given time
607 - #150: Inconsistent event names in SMPI replay
608 - #258: daemonized actors hang after all non-daemonized actors have completed
609 - #267: Linker error on unit_tmgr
610 - #269: SMPI: tracing of MPI_Wait/all/any broken
611 - SMPI: Fix various crashes with combined use of MPI_PROC_NULL and MPI_IGNORE_STATUS
613 ----------------------------------------------------------------------------
615 SimGrid (3.19.1) Released March 22 2018
617 The Fixed ABI Release.
619 As you may know, we are currently refactoring SimGrid in deep.
620 Upcoming SimGrid4 will be really different from SimGrid3: modular,
621 standard and extensible vs. layered, homegrown and rigid. C++ vs. C.
623 Our goal is to smooth this transition, with backward compatibility
624 and automatic update paths, while still progressing toward SimGrid4.
626 SimGrid remains open during works: The last pure SimGrid3 release was
627 v3.12 while all subsequent versions are usable alpha versions of
628 SimGrid4: Existing interfaces remain unchanged, but the new S4U
629 interface is budding and the internals are deeply reorganized.
631 Since 2015, we work hard to reduce the changes to public APIs. When
632 we need to rename a public library symbol in S4U, we let your
633 compiler issue an explicative warning when you use the deprecated
634 function. These messages remain for four releases, i.e. for one full
635 year, before turning into an error. Starting with v3.15, your can
636 also adapt to API changes with the SIMGRID_VERSION macro, that is
637 defined to 31500 for v3.15, to 31901 for v3.19.1 and so on.
639 Starting with this v3.19.1, our commitment to reduce the changes to
640 the public interfaces is extended from the API to the ABI: a program
641 using only MSG or SimDag and compiled against a given version of
642 simgrid can probably be used with a later version of SimGrid without
643 recompilation. We will do our best... but don't expect too much of
644 it, that's a really difficult goal during such profund refactoring.
646 The difference between v3.19 and v3.19.1 is that the former was
647 accidentally breaking the ABI of MSG, while the later is restoring
650 S4U and kernel APIs will still evolve until SimGrid4, with one-year
651 deprecation warnings as currently. In fact, cleaning up these
652 interfaces and converting them to snake_case() is one release goal of
653 v3.20. But don't worry, we are working to smooth this upgrade path.
655 In summary, new projects should start with S4U to benefit of the
656 future, but old MSG projects should still be usable with no change.
658 ----------------------------------------------------------------------------
660 SimGrid (3.19) Released March 20 2018
662 The Moscovitly-cold Spring release.
664 SMPI user-visible improvements:
665 - Support of MPI_Type_create_subarray
666 - Unimplemented MPI calls now abort (instead of issuing a warning)
667 Some harmless calls around errhandlers still only issue a warning.
668 - MPI_Sendrecv was behaving badly when MPI_PROC_NULL was sender or receiver.
669 - Starting MPI ranks (or even MSG/S4U actors) once the simulation started
670 is now possible (mmap privatization was refactored to this end).
671 Adding new SMPI instances should also be technically doable now.
673 SMPI internal cleanups:
674 - Removed index notion from SMPI -- no more "getPid() - 1"!
675 In tracing files, actors are called rank-<PROCESS-ID> but these are
676 NOT the real ranks (tracing several communicators is not supported yet).
677 - Deprecate smpi_process_index() (will be removed in 3.22)
678 - Better testing on classical proxy apps, through an external project:
679 https://github.com/simgrid/SMPI-proxy-apps/
682 - Use a graphical TOC to make it easier to find the documentation you need
683 - Revamp the MSG tutorial
686 - Fix MSG_task_get_remaining_work_ratio(): return 1.0 for unstarted tasks.
687 - Remove parameter of MSG_process_killall().
688 Resetting the PID was bogus anyway (several actors could have the same PID).
691 - Execution->setHost() can be called after start(), to migrate it.
692 - Comm::test_any() is now implemented.
693 - s4u::Actor now has onCreation() and onDestruction() signals.
694 - Install some kernel header files for the users' plugins and more.
695 Warning, their API is really not stable yet.
696 include/simgrid/kernel/resource/{Action,Resource,Model}.hpp
697 include/simgrid/kernel/routing/*Zone.hpp
700 - SD_task_dependency_add(): remove unused parameters 'name' and 'data'.
702 Build System and other cleanups:
703 - Remove unused run-time parameter "tracing/onelink-only".
704 - SimGrid now works with intel compilers (MC still buggy)
705 - Remove XBT_LOG_CONNECT, it should be useless nowadays.
706 - tesh kills subprocesses on timeout (but not on windows)
709 - Rename FULLDUPLEX into SPLITDUPLEX (old name still accepted)
712 - #194: Feature request: simgrid::s4u::Comm::test_any()
713 - #245: migrating an actor does not migrate its execution
714 - #253: Feature Request: expose clusters as objects
715 - #254: Something seems wrong with s4u::Actor::kill(aid_t)
716 - #255: Tesh broken on Windows
717 - #256: Modernize FindSimGrid.cmake
718 - #257: Fix (ab)use of CMake install
720 ----------------------------------------------------------------------------
722 SimGrid (3.18) Released December 24 2017
724 The "Ho Ho Ho! SimGrid 4 beta is coming to town" release.
726 MSG IS NOW DEPRECATED. Please use S4U for new projects.
727 - Support for MSG should not be removed from SimGrid before 2020,
728 but future evolutions will be limited to the integration of
729 user-provided patches.
732 - s4u::onDeadlock() signal, run before stopping the simulation.
733 - s4u::Exec: asynchronous executions (abstraction of background
735 - s4u::Host->getLoad() returns the achieved speed in flops/s
738 - Link::name() is deprecated and will be removed in v3.21, use
739 Link::getCname() instead.
740 - Mailbox::getName() changed to return a std::string, use
741 Mailbox::getCname() instead to get a char*.
742 - Storage::getName() changed to return a std::string, use
743 Storage::getCname() instead to get a char*.
744 - s4u::allStorages() becomes s4u::getStorageList(whereTo)
745 to have both allocation and deallocation of the map in user space.
748 - Forbid the use of MSG_task_get_flops_amount() on parallel tasks:
749 The amount of flops remaining to do is a vector, not a scalar.
750 - Introduce MSG_task_get_remaining_work_ratio(), which does what its
751 name implies on both sequential and parallel tasks.
752 - Both changes fix GitHub's #223 using PR #237 as a basis.
753 Thanks Michael Mercier.
754 - Most examples were converted to S4U and hidden elsewhere at tests.
755 Rationale: we still want MSG to work; we want newcomers to use S4U.
758 - LMM stuff moved to its own namespace: simgrid::kernel::lmm.
759 - Renamed LMM classes (e.g. s_lmm_system_t -> System).
762 - Switch to the faster dlopen privatization mechanism by default
763 - Documentation improvments
766 - Live migration is getting moved to a plugin. Dirty page tracking is
767 the first part of this plugin. This imply that VM migration is now
768 only possible if one this function is called:
769 - C/MSG: MSG_vm_live_migration_plugin_init()
770 - C/C++: sg_vm_live_migration_plugin_init()
771 - Java: Msg.liveMigrationInit()
772 For C and C++, "simgrid/plugins/live_migration.h" also has to be
776 - Define class simgrid::xbt::Path to manage file names.
777 - Removed unused functions:
778 - xbt/file.h: xbt_basename(), xbt_dirname(), xbt_getline()
779 - xbt/graph.h: xbt_graph_edge_get_length(), xbt_graph_edge_set_length,
780 xbt_graph_export_graphviz()
781 - xbt/str.h: xbt_str_join()
782 - Remove unused datatypes:
783 - xbt/heap.h: use std::priority_queue or boost::heap instead
784 - xbt/swag.h: use boost::intrusive::list instead
787 - New link_energy plugin for the consumption of the links.
788 - All of the operations on files and storage contents have been
789 packaged into a plugin (src/plugins/file_system). The current
790 public interface can be found in
791 include/simgrid/plugins/file_system.h
792 To use these functions you now have to initialize the plugin by
793 calling MSG_storage_file_system_init() just after calling
794 MSG_init() or sg_storage_file_system_init() just after creating
798 - Remove the undocumented/untested tag <include>
801 - Remove viva specific tracing as the tool is no longer maintained
804 - #248: Kill of finished processes leads to segfault
805 - #240: xbt_cond_wait_timeout should gracefully return for C apps
806 - #239: please implement signal s4u::onDeadlock()
807 - #230: segfaults when exit() without run()
808 - #225: s4u::Actor::kill() doesn not really kill victims in a join()
809 - #223: MSG_task_get_flops_amount() not working with parallel tasks
810 - #222: Actor::kill() doesn't really kill and segfaults
811 - #221: odd LMM warning when killing an actor
812 - #120: Memory leak when the processes are forcefully killed
814 ----------------------------------------------------------------------------
816 SimGrid (3.17) Released October 8 2017
818 The Drained Leaks release: (almost) no known leaks despite the tests.
820 Even very long simulations will preserve your memory: our testsuite
821 stresses SimGrid for over 45mn on fast machines for a coverage of
822 over 80%, and there is only one single known leak, of about 4kb.
826 - Comm.detach(): start and forget about asynchronous emission. A cleanup
827 handler may be given to free resources if the comm cannot be completed.
828 - this_actor::send(mailbox) is now mailbox->put()
829 - New: simgrid::s4u::Comm::wait_all()
830 - New: Host.execute() for remote executions.
833 - Unused option network/sender-gap is removed.
836 - Deprecate MSG_task_isend_with_matching(): This unused feature
837 really complicates our internals. Will be removed in v3.20.
840 - Improved context termination. It is now possible to free resources, even
841 when a process is forcibly killed.
842 - ContextBoost: add support for Boost versions above 1.61.
845 - Bring back run-time option --cfg=exception/cutpath to remove exception
847 - Removed unused functions:
848 - xbt/str.h: xbt_str_split_str(), xbt_str_subst(), xbt_str_ltrim(),
849 xbt_str_rtrim(), xbt_str_trim().
850 - xbt/xbt_os_thread.h: xbt_os_thread_cancel(), xbt_os_thread_detach().
853 - Removed header files obsolete since SimGrid 3.12:
854 msg/datatypes.h, msg/msg.h, simdag/datatypes.h, simdag/simdag.h.
856 - #3: SD_exit should be made optional
857 - #120: Memory leak when the processes are forcefully killed
858 - #159: Threading test regression in Actor refcounting
859 - #170: simgrid::s4u::Comm::wait_any() returns too many comms
860 - #185: simgrid::s4u::Engine::instance()->shutdown() segfaults
861 - #186: Actor::killAll() segfaults if some process is blocked on wait()
862 - #191: VM migration and pstate
863 - #192: Updating the energy consumptions of all hosts crashes with VMs
864 - #195: All actors have PID=0 in the logs
865 - #204: Sometimes segfault with thread contexts and mmap privatization
866 - #222: Actor::kill() doesn't really kill and segfaults
867 - #225: Actor::kill() doesn't really kill when victims are doing a join()
869 ----------------------------------------------------------------------------
871 SimGrid (3.16) Released June 22. 2017.
873 The Blooming Spring Release: developments are budding.
876 - FreeBSD: Disable SMPI mmap privatization, switch automatically to dlopen.
877 - Mac, BSD: dlopen+thread broken, switch automatically to raw contexts.
878 - Java JAR file should be finally fully working on Mac OSX too.
880 XML platforms: Switch to platform v4.1 format.
881 * This is (mainly) a backward compatible change: v4 are valid v4.1 files
882 - <zone> can be used as a synonym for the now deprecated <as>
883 - <zoneRoute> can be used as a synonym for the now deprecated <asroute>
884 - <bypassZoneRoute> an be used as a synonym for the now deprecated <bypassAsRoute>
885 - <actor> can be used as a synonym for the now deprecated <process>
886 - state_file and avail_file periodicity is now easier to express
887 (check the documentation) the old behavior should still work.
888 * Storage: not backward compatible, but it seems that nobody ever used it
889 - Remove attribute 'content_type' of <storage_type>: was never used
890 - Make attribute 'model' of <storage_type> optional: for future usage
891 - Remove Bconnection model property: was never (in)validated. Replaced by
892 the maximum of the read and write bandwidth as a resource constraint.
895 - New and Backwards Compatibility break:
896 SD_simulate_with_update (double how_long, xbt_dynar_t changed_tasks_dynar)
897 When one wants to get the list of tasks whose states have changed during a
898 simulation round, s/he has to allocate and free a dynar and use it as
899 argument to this function. The former SD_simulate (double how_long)
903 - Allow multicore VMs, with the correct sharing (unless you overcommit)
904 BUG: vCPU overcommitting still leads to buggy sharing, though. WIP.
907 - New function to update the consumption of all hosts at once.
908 - Fix the model for multi-core hosts, linear in the amount of busy
909 cores with an abnormality for pIdle (see paper).
910 BUG: Still not satisfactory for ptask on mono-cores.
913 - The netzone are now available from the MSG API.
914 The old names still work, but are now deprecated.
917 - New algorithm to privatize globals: dlopen, with dynamic loading tricks
918 - New option: smpi/keep-temps to not cleanup temp files
919 - New option: smpi/shared-malloc-blocksize . Relevant only when global shared
920 mallocs mode is used, allows to change the size of the fake file used
921 (default 1MB), to potentially limit the number of mappings for large runs.
922 - Support for sparse privatized malloc with SMPI_PARTIAL_SHARED_MALLOC()
923 - Fortran ifort and flang compilers support
924 - New RMA calls supported (experimental):
925 - MPI_Win_allocate, MPI_Win_create_dynamic, MPI_Win_attach
926 - MPI_Win_detach, MPI_Win_set_info, MPI_Win_get_info
927 - MPI_Win_lock_all, MPI_Win_unlock_all, MPI_Win_flush
928 - MPI_Win_flush_local, MPI_Win_flush_all, MPI_Win_flush_local_all
929 - MPI_Op_commutative, MPI_Fetch_and_Op, MPI_Compare_and_swap
930 - MPI_Rput, MPI_Rget, MPI_Raccumulate, MPI_Rget_accumulate
933 - New: this_actor::isMaestro() returns whether we are in kernel mode.
934 - Behind the scene, ActivityImpl are now automatically refcounted.
935 Removing this nasty bottleneck will greatly simplify our internals.
938 - Replay: New function xbt_replay_action_get():
939 Retrieve the function previously associated to an event type.
940 - DROPPED FUNCTION: xbt_str_varsubst()
941 - DROPPED MODULE: strbuff. We don't need it anymore.
942 - DROPPED MODULE: matrix. We don't need it anymore.
943 - DROPPED MODULE: lib. We don't need it anymore.
945 -- Thu Jun 22 22:48:12 CEST 2017 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
947 SimGrid (3.15) Released March 22. 2017
949 The Spring Release: continuous integration servers become green
950 We fixed even the transient bugs on all target architectures:
951 Linux (CentOS, Debian, Ubuntu, Fedora), Mac OSX (Mavericks, El Capitan)
952 Windows, FreeBSD, NetBSD.
954 - Rename NetCards to NetPoints.
955 This was intended to help NS3 users, but that's not a netcard.
956 That's a point in the routing algorithm, let's avoid wrong simplifications.
959 - New: MSG_process_yield(). Stop and yield to other processes.
960 - New: MSG_process_daemon(). Daemon processes are automatically killed
961 when the last non-daemon process terminates
962 - New: MSG_process_ref/unref(). Fiddle with the process refcounting.
963 - Renamed MSG_energy_plugin_init() -> MSG_host_energy_plugin_init()
964 to make room for the upcoming network energy plugin.
965 - Drop MSG_host_get_current_power_peak: duplicates MSG_host_get_speed
968 - Ensure that an actor can kill itself with Process::exit()
969 - Kill the obscure NativeException. Nobody want to survive the issues
970 it denotes, so use JniException that is a RuntimeException (not to
971 be caught explicitly).
972 - Partial bug fix in initialization. SimGrid flags on command line were
973 consumed at C level but stayed in the original Java String[] args.
974 This could mess users' args[i] if SG flags were not put at the end of
976 The SimGrid flags are now removed from the Java arguments. However,
977 the number of arguments REMAINS UNCHANGED. It is then UNSAFE to test
978 if args.length is greater than the number of YOUR OWN ARGUMENTS.
979 It might be if you have --log or --cfg flags in the command line.
980 - Fix numerous memleaks all around the place. In particular, around VMs.
984 - s4u::onPlatformCreated: right before the simulation starts
985 - s4u::onSimulationEnd: right after the main simulation loop
986 - s4u::onTimeAdvance: right after a clock change (time is discrete)
987 - s4u::Host::onSpeedChange: when the pstate is changed, or when an
988 event from the availability_file changes the avail speed.
989 - Links are now usable from s4u
990 - New: Engine::hostList() and Engine::hostCount(). Still clumsy.
991 - New: Actor::suspend(), Actor::resume(), and Actor::migrate(new_host)
992 - New examples: The conversion of MSG examples to S4U has begun
993 - Actors: create, kill, migration, and suspend
994 - Applications: master-worker and token-ring
995 - Action replay: communications and storage
996 - Drop Host::getPstateSpeedCurrent() which duplicates Host::speed()
999 - Backwards Compatibility breaks
1000 - The SD_route_get_list and SD_route_get_size functions have been removed.
1001 They are replaced by the unique
1002 void sg_host_route(sg_host_t src, sg_host_t dst, xbt_dynar_t links)
1003 The route from src to dst is built in the links dynar whose size can
1004 be obtained with xbt_dynar_length.
1005 - The SD_route_bandwidth and SD_route_latency functions have been replaced by
1006 sg_host_route_bandwidth and sg_host_route_latency.
1007 Macros ensure the backwards compatibility, but you should fix your code
1010 - Major C++ rewrite ongoing (SMPI used to be C compiled in C++).
1011 This can break codes using SMPI internals (from private.h instead of the public smpi.h).
1012 - Bump our claim of support from MPI 1.1 to MPI 2.2.
1013 We don't support 100% of it, but it should be enough. Contact us if not.
1014 - MPI_Win_lock/unlock, MPI_Get_accumulate support added (as for all RMA, implementation is
1015 naive and probably inaccurate)
1016 - New algorithm for SMPI_SHARED_MALLOC: global, where all blocks are
1017 mapped onto a unique small file using some system magic.
1018 - Bugfix: smpirun was sometimes misusing hostfile when wrongly terminated
1019 - Fortran: cleanups, fixes, support of user-added operations
1020 - RMA: MPI_Accumulate are applied in correct order.
1021 - RMA: MPI_Win_{complete/post} shouldn't miss messages anymore.
1022 - Better support for MPI_IN_PLACE
1023 - Support for MPI_Win attrs and keyvals.
1024 - Support MPI_Comm_group_create, MPI_Type_size_x
1025 - MPI ops should be properly applied to all allowed types
1026 - Replace implementation of MPI_Bcast "scatter followed by rdb allgather"
1027 algorithm by a non failing one from mpich.
1030 - Kill the fifo data container: we don't use it anymore.
1033 - A <cluster> can now be created with different speed values to represent pstates.
1034 see examples/platforms/energy_cluster.xml for an example.
1036 SimGrid (3.14.159) Released December 28. 2016
1038 The previous release was only a crude approximation of a Pi release;
1039 this one should be a bit better.
1041 - Revert a last minute change that broke on Mac OSX.
1042 - Fix the changelog and NEWS files.
1043 - Improve the documentation, in particular of the routing module.
1044 - Integrate some patches flying around in Debian.
1046 SimGrid (3.14) Released December 24. 2016
1049 * The whole documentation was reworked and reorganized. There is
1050 still much room for improvement here, but we're on it.
1053 * We now need python3 for our testing infrastructure.
1054 * Model checking needs libevent
1057 * Now works on FreeBSD
1060 * Privatization now works on FreeBSD
1062 * Privatization is now activated by default in smpirun
1063 You can turn it off with -no-privatize if something goes wrong.
1065 * Call-location tracing for SMPI.
1066 You can add the exact location (filename / linenumber) of an MPI call to
1067 your trace files and slow down or speed up the simulation between two
1068 consecutive calls by using an adjustment file (see the documentation).
1070 * Fixed computation of timings for MPI_Send, MPI_Recv & possibly also others
1071 We've found a bug that prevented SMPI to account for MPI_Send, MPI_Recv
1072 and others (in some cases) in a correct way. That is, the smpi/os, smpi/or
1073 values were ignored in some cases. The timings of these functions can now
1074 be significantly different.
1076 * smpi/cpu-threshold:-1 should become smpi/simulate-computation:no
1077 smpi/running-power is renamed to smpi/host-speed
1079 * smpi/grow-injected-times option to enable or disable multiplication of the
1080 timings injected in MPI_Iprobe, or MPI_Test. Enabled by default, which can
1081 make simulation less precise (but also much faster).
1083 * smpirun script should be (much) faster for large deployments.
1085 * SMPI tracing: fixed issue with poor matching of send/receives.
1087 * Replay: Fix broken waitall
1089 New functions and features
1090 * MSG_parallel_task_execute_with_timeout, to timeout computations.
1092 Dropped / renamed functions and features
1093 * msg_mailbox_t and associated functions. Use s4u::Mailbox instead.
1094 - MSG_mailbox_is_empty() -> Mailbox::empty()
1095 - MSG_mailbox_front() -> Mailbox::front()
1096 - MSG_mailbox_get_by_alias() -> simgrid::s4u::Mailbox::byName(name)
1097 - MSG_mailbox_get_task_ext() -> MSG_task_receive_ext()
1098 - MSG_mailbox_get_task_ext_bounded -> MSG_task_receive_ext_bounded
1099 - MSG_host_(get/set)_params -> MSG_vm_(get/set)_params
1100 * Don't pass the free_f parameter to property related functions:
1101 - MSG_host_set_property_value()
1102 - MSG_as_router_set_property_value()
1103 - MSG_storage_set_property_value()
1104 * VM properties. Since msg_vm_t are msg_host_t, just use
1105 MSG_host_get_property_value() and friends
1106 * VM I/O related things:
1107 - Ignored parameter of vm_create: core_nb, disk_path and disk_size.
1108 - Unimplemented save/restore methods
1109 * MSG_as_router_get_property_value() was redundant with
1110 MSG_environment_as_get_property_value().
1111 - Removed MSG_as_router_*propert*() functions
1112 - Added MSG_environment_as_set_property_value() for consistency
1113 * xbt heterogeneous dictionaries (created with xbt_dict_new()).
1114 Well, they are still there for now, but deprecated with a warning.
1115 Please switch to xbt_dict_new_homogeneous() before this is removed
1117 * Task affinity. Its intended behavior (that was very badly tested
1118 and probably not really working) was deceiving what most users
1119 would have hoped here.
1120 * xbt_os_sem_get_value: unused internally, deprecated on OS X El Capitan
1121 * Option network/coordinates is now useless and should be dropped.
1124 * Added option storage/max_file_descriptors to allow more than 1024 files opened
1127 * Added option maxmin/concurrency_limit to allow more than 100 processes per host
1128 * Added Dragonfly topology support
1131 * Add Exa- and Peta- units such as EiB, EB, Eib, Eb for size, and
1132 EiBps, EBps, Eibps, Ebps for bandwidth.
1133 They may become useful to some lucky ones.
1136 * New functions: msg.Comm.waitAll() and msg.Comm.waitAny()
1137 * ex/app_tokenring: new example, very similar to the MSG Token Ring
1138 * ex/async_waitAll: new example, on asynchronous communications
1141 * Memory usage should be decreased for simulations with a large number
1142 of processes. This also helps for SMPI.
1144 SimGrid (3.13) stable; urgency=low
1146 The Half Release, a.k.a. the Zealous Easter Trim.
1148 - We removed half of the lines, that were mostly experimental cruft.
1149 v3.12 lasted 286000 lines of code, v3.13 is only 142000 lines
1150 (not counting blanks and comments -- according to openhub.net)
1151 - The internals are now compiled in C++ (and will soon be clean C++)
1152 - We removed 75 klines of XML, 12 klines of Java, 5 klines of cmake,
1153 59 klines of C, etc. We added only 29 klines of C++ in replacement.
1155 * Backwards Compatibility breaks
1156 - Removed Lua simulation bindings (switch to C or Java for that).
1157 Lua can still be used to describe platforms
1158 - Removed Java kernel plug-ins.
1159 Will be reintroduced after the ongoing major internals reorg.
1161 - the following functions were removed.
1162 They were too specific and should be reimplemented in a generic
1163 way, with filter function.
1164 - MSG_task_listen_from_host
1165 - MSG_mailbox_get_count_host_waiting_tasks
1166 - MSG_mailbox_put_with_timeout was removed.
1167 Please use MSG_task_send_with_timeout instead.
1169 - the SD_application_reinit function was removed. It has been a noop for a while.
1170 - The ACCESS_MODE of SD_workstation has been removed. This feature was not really usable and should soon be
1171 replaced by a more flexible mechanism.
1172 - The following functions thus do not exist anymore
1173 - SD_workstation_get_access_mode
1174 - SD_workstation_set_access_mode
1175 - SD_workstation_get_current_task
1176 - Basic estimation functions have been removed but can easily be replaced
1177 - SD_route_get_communication_time => SG_route_get_latency() + amount / SD_route_get_bandwidth()
1178 - SD_workstation_get_computation_time => amount / sg_host_speed()
1180 - VM.setBound(int load) is now VM.setBound(double bound) to meet the MSG semantics.
1181 Use VM.getSpeed()*load/100 for the legacy behavior.
1183 - option enable_tracing was removed. It was not doing anything for a while.
1184 - In the ModelChecker:
1185 - the model-checker now ptraces the model-checked process which means
1186 you cannot use a debugger on the latter anymore (we might make this
1187 optional in the feature);
1188 - removed soft-dirty page tracking;
1189 - remove model-checked side snapshot management,
1190 MC_snapshot() and MC_compare_snapshot();
1191 - keep the MC_cut() function as a stub (it was not really working
1192 in the previous release).
1195 * All options are consistently in kebab-case. Old names are kept as alias.
1198 * Switch to platform v4 format.
1199 - Rename from 'power' to 'speed' the attributes describing the amount of
1200 flops that a <host>, <peer>, <cluster> or <cabinet> can deliver per second.
1201 - In <trace_connect>, attribute kind="POWER" is now kind="SPEED".
1202 - In <host> and <link>, attributes availability and state are gone.
1203 It was redundant with state and availability traces, and with peak values.
1204 - In <cluster>, attributes availability_file and state_file are gone.
1205 It was too complex and unused.
1206 - Kill <gpu>. Was not doing anything.
1207 - The DOCTYPE points to the right URL:
1208 http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd
1209 (the file at this address now documents the changelog since its v1)
1210 - A warning is emitted for unit-less values (they are still accepted).
1211 - speed. Default: 'f' or 'flops'. Also defined:
1212 'Yf', 'Zf', 'Ef', 'Pf', 'Tf', 'Gf', 'Mf', 'kf'
1213 'yottaflops', 'zettaflops', 'exaflops', 'petaflops', 'teraflops', 'gigaflops', 'megaflops', 'kiloflops'
1214 - bandwidth. Default: 'Bps' bytes per second (or 'bps' for bits but 1 Bps = 8 bps)
1215 Also defined in bytes: 'TiBps', 'GiBps', 'MiBps', 'KiBps', 'TBps', 'GBps', 'MBps', 'kBps', 'Bps'
1216 And the same in bits: 'Tibps', 'Gibps', 'Mibps', 'Kibps', 'Tbps', 'Gbps', 'Mbps', 'kbps', 'bps'
1217 - latency. Default: 's' second. Also defined:
1218 'w' week, 'd' day, 'h' hour, 'm' minute, 'ms' millisecond, 'us' microsecond, 'ns' nanosecond, 'ps' picosecond
1220 * bin/simgrid_update_xml can upgrade your files automatically (won't convert unit-less values)
1221 tools/sg_xml_unit_converter.py may help (but it's just a warning and will probably ever be).
1224 * s4u::Host is now the preferred public interface to the Host features.
1225 sg_host_* functions are C bindings to the exact same behavior
1226 MSG_host_* and SD_workstation_* are #define to the sg_host_* ones
1229 * The examples were completely reorganized (in C and Java), for your browsing pleasure.
1230 * Kill all deprecated functions (the ones you had when declaring MSG_DEPRECATED).
1231 They were deprecated since a few years, and probably did not even compile anymore.
1234 * The API has been profoundly modified to directly use the core objects instead of redefining its own.
1235 SD_Workstation_t and SD_link_t are now sg_host_t and sg_link_t respectively.
1236 Some functions have also been renamed for consistency. Backward compatibility is maintained, but users are
1237 encouraged to update their codes. A list of the modified functions can be found at the end of
1238 include/simgrid/simdag.h
1241 * simgrid::simix::kernelImmediate() is the closure callback. It ensures that
1242 the lambda or closure passed as a parameter will run in kernel mode.
1243 All the callback functions should be rewritten to that interface at some point.
1246 * Reorganizing and cleaning the internals all around the place.
1249 * Remove old default barrier/bcast buggy algorithms (see #18407)
1250 * Various bug fixes to handle more codes
1251 * Remove the need for the --foreground option of smpirun (it is still
1252 accepted for backward compatibility).
1255 * Kill the setset data container: MC don't use it anymore.
1256 * Kill the queue data container: it made more sense with GRAS.
1257 * Kill the xbt_peer_t data type: it's useless without GRAS.
1258 * Kill rm_cb feature of config sets: it was never useful.
1259 * Kill graphxml parsing feature. It was not used.
1260 * Kill the deprecated code protected by XBT_USE_DEPRECATED
1262 - xbt_dynar_sort_strings(), when the content is char*
1263 - xbt_str_parse_int / xbt_str_parse_double, wrapping strtol/strtod
1264 They throw exceptions on invalid input;
1265 * C++ support for declaring CLI flags (simgrid::config::Flag);
1266 * class for abstracting different signal backends (simgrid::xbt::signal).
1267 with no external dependencies (we need very simple signals).
1270 * refactoring and cleanup of the code;
1271 * ongoing process to cleanly separate the model-checking algorithms
1272 from the code model-checking support.
1274 -- Wed Apr 27 21:00:53 CEST 2016 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1276 SimGrid (3.12) stable; urgency=low
1278 The Facelift Release.
1281 * Require g++ v4.7 at least to not speak prehistorical C++.
1282 * Require Boost 1.48 (for signal2 component).
1283 * Java must be version 7 at least when activated.
1284 * Builds on Windows again (including Java bindings).
1285 * Tracing is now always enabled (no way to turn it out)
1286 * Remove GTNetS. It was not working anyway.
1287 * Various cleanups in the cmake scripts.
1288 * Move headers around to sort them out on installed systems:
1289 - instr/instr.h -> simgrid/instr.h
1290 - instr/jedule/* -> simgrid/jedule
1291 - simdag/datatypes.h was removed
1292 - simdag/simdag.h -> simgrid/simdag.h
1293 - msg/datatypes.h was removed
1294 - msg/msg.h -> simgrid/msg.h
1297 * Interface improvement:
1298 - Rename MSG_host_is_avail(h) to MSG_host_is_on(h)
1299 - Sanitize the interface in MSG_task_ module:
1300 - Merge two functions that were close enough but misleading:
1301 set_compute_duration(t) -> set_flops_amount(t)
1302 get_remaining_computation(t) -> get_flops_amount(t)
1303 - set_data_size(t) -> set_bytes_amount(t)
1304 get_data_size(t) -> get_bytes_amount(t)
1305 - Massive cleanups in the functions related to the energy
1306 - MSG_host_get_pstate_number() -> MSG_host_get_nb_pstates()
1307 - New: MSG_host_get_pstate()
1309 - msg/energy/onoff: switching hosts on and off
1311 * Interface improvement:
1312 - Rename Host.isAvail() to Host.isOn()
1313 - Rename Process.currentProcess() to Process.getCurrentProcess()
1314 - Rename Task.setDataSize() to Task.setBytesAmount()
1315 - Merge Task.getRemainingDuration() and Task.getComputeDuration() into Task.getFlopsAmount()
1317 - #18874: Actually allows the GC to reclaim tasks
1321 - SIMIX_process_throw: raises an exception in a remote process
1322 * Refactoring: Separate sub-modules
1323 - libsmx: the public interface, as libc in a real system
1324 - popping: the strange dance that converts a user request into a kernel handling
1325 - smx_context_*: the virtualization mechanisms that embed the user code
1326 - smx_*: the handling of each simcalls
1327 * Interface cleanup:
1328 - simcall_host_set_power_peak_at -> simcall_host_set_pstate
1329 * Rename smx_action_t into smx_synchro_t, making explicit that these
1330 things are used to synchronize processes with their environment.
1331 For example, a communication is a sort of synchronization involving
1332 the communicating processes (that may block until the exchange) and
1333 the platform. The same can be said from computations, etc.
1335 - #18888: segfault when a process ends before its kill_time
1339 - 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.
1340 - MPI_Keyval*, MPI_Attr* functions, as well as MPI_Comm_attr*, MPI_Type_attr* variants (C only, no Fortran support yet)
1341 - MPI_Type_set_name, MPI_Type_get_name
1342 - MPI_*_c2f and MPI_*_f2c functions
1343 - MPI_Info_* functions (beware, get_nthkey may not follow the insertion order)
1344 - MPI_Pack, MPI_Unpack and MPI_Pack_size functions
1345 - Activate a lot of new tests from the mpich 3 testsuite
1347 - Constant times can be injected inside MPI_Wtime and MPI_Test through options smpi/wtime and smpi/test
1348 - InfiniBand network model added: Based on the works of Jerome Vienne
1349 http://mescal.imag.fr/membres/jean-marc.vincent/index.html/PhD/Vienne.pdf
1350 - When smpi/display_timing is set, also display global simulation time and application times
1351 - Have smpirun, smpicc and friends display the simgrid git hash version on --git-version
1352 * Collective communications
1353 - 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
1354 - 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/).
1355 - Support for Rabenseifner Reduce/Allreduce algorithms (https://fs.hlrs.de/projects/par/mpi//myreduce.html)
1357 - Replay now uses algorithms from wanted collective selector
1358 - Replay can be used with SMP-aware algorithms
1359 - Memory occupation of replay should now be contained (temporary buffers allocated in collective algorithms should be shared between processes)
1360 - 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.
1362 - [#17799]: have mpi_group_range_incl and mpi_group_range_excl better test some corner cases
1363 - Correctly use loopback on fat-tree clusters
1364 - Asynchronous small messages shouldn't trigger deadlocks anymore
1365 * Energy/DVFS cleanup and improvement
1366 - smpi_set_host_power_peak_at() -> smpi_set_host_pstate()
1367 - new: smpi_get_host_pstate()
1370 - "Full" network optimization flag was broken since Surf++
1371 - Better handling of precision flags in maxmin
1372 - Fix bug causing sometimes "Impossible" errors
1373 - Properly pass cluster properties to included hosts
1374 * Improvement of the Energy plugin.
1375 - Always update the consumption before returning that value
1376 - New property: watt_off to denote the dissipation when the host is off
1377 - New functions getWattMinAt and getWattMaxAt to retrieve the
1378 dissipation of pstates that we are not currently at.
1379 * Java: class NetworkLink renamed to Link
1380 * New function: simcall_process_get_kill_time()
1381 * Massive rename s/workstation/host/
1382 - That's intrusive, but that's good for the project consistency. Sorry.
1383 - Change config option "workstation/model" into "host/model"
1386 - Add a xbt_heap_update function, to avoid costly xbt_heap_remove+xbt_heap_insert use
1387 - Add a xbt wrapper for simcall_mutex_trylock (asked in [#17878])
1388 - Add two new log appenders: rollfile and splitfile. Patch by Fabien Chaix.
1389 - xbt_dirname and xbt_basename for non-POSIX systems
1391 * The model checker now runs as a separate process.
1392 * The model checker runs must now be launched with the new simgrid-mc program.
1393 * Record/Replay: the MC can display a textual representation of a path in the
1394 execution graph. It can then be replayed outside of the model checker.
1396 -- Mon Oct 12 06:02:41 CEST 2015 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1398 SimGrid (3.11) stable; urgency=low
1403 * Normalizing pointers addresses tool for better diff between logs
1406 * Add cloud examples using new VMs
1407 - examples/msg/cloud/two_tasks_vm.tesh
1408 - examples/msg/cloud/simple_vm.tesh
1409 - examples/java/cloud/cloud.tesh
1410 - examples/java/cloud/migration/migration.tesh
1411 * Add java surf examples:
1412 - examples/java/surfPlugin/surf_plugin.tesh
1413 - examples/java/reservationSurfPlugin/reservation_surf_plugin.tes
1414 - examples/java/surfCpuModel/surf_cpu_model.tesh
1415 * Add SMPI+MSG example:
1416 - examples/smpi/smpi_msg_masterslave/
1421 - msg task destroy cancel test
1422 - msg_host on/off test
1423 * Move all tests in testsuite to teshsuite (adding tesh files)
1424 * Restructure teshsuites
1425 - one folder for each kind of test
1426 * Restructure AddTests.cmake
1428 - structure the order of tests (with sections)
1431 * Add virtual machine
1432 - creation of a VM on a PM
1433 - migration of a VM from a PM to another PM
1435 - MSG_process_join(msg_process_t process, double timeout)
1436 - msg_bar_t MSG_barrier_init(unsigned int count)
1437 - int MSG_barrier_wait(msg_bar_t barrier)
1438 - void MSG_barrier_destroy(msg_bar_t barrier)
1439 - msg_as_t MSG_environment_as_get_by_name(const char * name)
1440 * New option "msg/debug_multiple_use" to help debugging when a task is used
1443 - Improvements and finalization of MSG_storage, MSG_file APIs and their
1445 - Increase code coverage in test suites
1449 * Protect context stacks against stack overflow. The number of protected memory
1450 pages allocated on the top of each stack (1 by default) can be configured
1451 with the new command line option --cfg=contexts/guard_size:<value>.
1452 * Simcalls are now generated by a python script that
1453 - generates files included by SimGrid
1454 - checks that all the functions exist, and proposes prototypes
1456 - remove sem_destroy, file_set_data, comm_destroy, vm_set_state,
1457 host_set_data, host_get_data
1459 - simcall_process_join(smx_process_t process, double timeout)
1460 * Fix bug where sleeping processing could not be suspended.
1463 * Translate surf models from C to C++
1464 - Generic classes for all models: Model, Resource, Action
1465 - A generic interface for each kind of model (CPU, Network, Storage
1466 Workstation, WorkstationVM)
1468 * Translate surf routings from C to C++
1469 * Add callbacks using sigc++ or boost::signals2
1470 - Add callback functions for resource creation/destruction
1471 - Add callback functions for action state change
1472 - Handle Energy as a plugin
1473 * Replace swag by boost::intrusive
1474 * Add new routing models for clusters. For documentation, see
1475 http://simgrid.gforge.inria.fr/simgrid/latest/doc/platform.html#pf_cluster
1476 - tori, with topology="TORUS" and topo_parameters="ndim1,ndim2,...,ndimn"
1477 parameters for cluster tag
1478 - Fat trees, with topology="FAT_TREE" and
1479 topo_parameters="h;m1,...,mh;w1,...,wh;p1,...,ph" parameters for cluster tag
1480 - see examples/platforms/torus_cluster.xml and
1481 examples/platforms/fat_tree_cluster.xml
1482 * More documentation
1485 * Hostfiles support host:nb_processes construct to deploy several processes on
1487 * Collective communication algorithms should not crash if used with
1488 improper number of nodes and report the error.
1489 * SMPI now partially supports MPI_Topologies: MPI_Cart_create, MPI_Cart_shift,
1490 MPI_Cart_rank, MPI_Cart_get, MPI_Cart_coords, MPI_Cartdim_get,
1491 MPI_Dims_create, MPI_Cart_sub are supported.
1492 * New interface to use SMPI programmatically (still depends on MSG for
1493 some parts, see examples/smpi/smpi_msg_masterslave):
1494 - SMPI_app_instance_register(const char *name, xbt_main_func_t code,
1498 * Global variables privatization in MPI executables is now performed at runtime
1499 with the option smpi/privatize_global_variables (default:no).
1500 Limitations: Linux/BSD only, with mmap enabled. Global variables inside
1501 dynamic libraries loaded by the application are not privatized (static
1502 linking with these libraries is advised in this case)
1505 * Options defined in XML work correctly now.
1508 * New cmake option, enable_lib_in_jar, to control whether native libraries are
1509 copied into simgrid.jar or not (ON by default). Use this option if you want
1510 to reduce the size of the installed simgrid.jar, *and* the native libraries
1511 are kept installed elsewhere.
1512 * Surf binding with SWIG (code generated in maintainer mode only):
1513 - plugin to handle callbacks
1514 - CPU model only for the moment
1517 * Supernovae build mode is definitively removed. It was used to improve
1518 inlining and inter-module optimizations. It is nowadays superseded by
1519 link-time optimizations commonly available in compilers.
1520 * Update ns-3 find lib. Bindings for ns-3 should work again now.
1521 * Add boost dependency for surf++
1522 * Add new macro for tests
1523 - ADD_TESH(name <tesh_args>)
1524 - ADD_TESH_FACTORIES(name "thread;ucontext;raw" <tesh_args>)
1528 - xbt_bar_t XBT_barrier_init(unsigned int count)
1529 - int XBT_barrier_wait(xbt_bar_t barrier)
1530 - void XBT_barrier_destroy(xbt_bar_t barrier)
1531 * Make the xbt_os_time module public
1533 -- Sat May 31 22:39:38 CEST 2014 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1535 SimGrid (3.10) stable; urgency=low
1537 The Clean Diaper Release, a.k.a. SimGrid is leak-free.
1540 * Reintegrate Java to the main archive as desynchronizing these
1541 package is not acceptable anymore (Java is now considered stable)
1542 * Add explicit synchronization facilities through semaphores
1543 * Bug fix: Task.setDataSize() only changed the C world, not the value
1544 cached in the Java world
1547 * Dramatically change the way files are handled. API and internals changed, but
1548 this part of MSG was not considered as production grade either.
1549 * Add explicit synchronization facilities through semaphores
1550 * Add a new function MSG_host_get_process_list()
1551 * Preliminary DVFS support (see examples/msg/energy/ for details)
1554 * SMPI is now included directly in the libsimgrid as the windows
1555 linker doesn't force us on splitting it anymore.
1556 * Improvements of the SMPI replay tool:
1557 - Most of the collective communications are now rooted in the same process as
1558 in the original application.
1559 - Traces now rely on the same MPI data type as the application (MPI_BYTE was
1560 used until now). Multiple data types can now be used in a trace.
1561 - The replay tool now supports traces produce either by TAU or a modified
1563 - Bug Fix: the compute part of the reduce action is now taken into account.
1564 - Gatherv collective is now supported
1565 - SimGrid (SMPI for now) can generate replay traces as well. Option -trace-ti
1566 of smpirun outputs time independent traces for the current run. One file
1567 is created per process. If too many processes are simulated, this behavior
1568 can be changed to one file for all processes by using the
1569 tracing/smpi/format/ti_one_file flag
1570 * smpirun generates the host file if needed (with given host count and platform)
1571 * Integration of more than 100 STAR-MPI, MPICH, OpenMPI collective algorithms
1572 - allows to select one in particular with --cfg=smpi/coll_name:algorithm
1573 - allows to use the decision logic of OpenMPI(1.7) or MPICH(3.0.4) by setting
1574 --cfg=smpi/coll_selector:(mpich/ompi)
1575 * Support for new functions: MPI_Issend, MPI_Ssend, Commutative operations in
1577 * Add a --cfg:tracing/smpi/internals option, to trace internal communications
1578 happening inside a collective SMPI call.
1579 * Fix the behavior of complex data types handling.
1580 * Make MPI_Wtime another synchronization point to take computations into
1582 * Replace MPICH-1 test suite by the one from MPICH 3.0.4. Can be built using
1583 enable_smpi_MPICH3_testsuite flag in cmake. Run with ctest.
1584 * Add all missing Fortran bindings, SMPI should work with Fortran 90
1585 (no privatization of global variables yet)
1586 * Preliminary DVFS support (see examples/smpi/energy/ for details)
1589 * Verification of liveness properties is now available for SMPI applications
1590 (in addition to MSG applications)
1591 * Bugged examples using SMPI in examples/smpi/mc/
1592 * Add --cfg=model-check/visited option. Allows the verification of infinite
1593 programs. Detection of loops in the execution thanks to the system state
1594 comparison and reduction of the state space to explore. Can be combined with
1595 DPOR for safety properties.
1598 * Allow to change SimGrid configuration (see --help) within the code
1599 thanks to SD_config() as it can be done in MSG.
1600 * Add a new function SD_task_set_amount() upon user request.
1603 * Handle units for values (10ms, 10kiloflops, 10Bps, 1GB, ...)
1604 * Remove rule based routing (no more PCRE dependency)
1605 * Add a limiter_link option to cluster tag, to specify a maximum reachable
1606 bandwidth in fullduplex mode when it is less than twice the nominal bandwidth.
1607 * Add a loopback_bw and loopback_lat options to cluster tag.
1608 * Fix the peer tag that could not be mixed with other AS within a Vivaldi
1609 routing. Now peers are encapsulated in an AS and have their own private
1610 router but this is transparent.
1613 * Our own implementation of getline is renamed xbt_getline, and gets
1614 used even if the OS provide a getline(). This should reduce the
1615 configuration complexity by using the same code on all platforms.
1616 * New type: xbt_cfg_elm_boolean.
1617 * Allow to use yes/no for boolean configuration options in the command line.
1618 * Allow to disable SimGrid cleanups at exit from command line option.
1619 There are situations where one may want a simulation to end with an exit.
1620 Unfortunately, calling exit may cause SimGrid to segfault, which is quite
1621 annoying when scripting around the simulator. Adding a
1622 --cfg=clean_atexit:no allows to circumvent this issue.
1625 * Lots of memory leaks were corrected in this release.
1626 There is no known memory leaks anymore, in all of our 600+ tests.
1627 * New command line option --version, to get SimGrid version information.
1628 Packagers may want to add extra words to SIMGRID_VERSION_EXTRA defined in
1630 * Supernovae builds are deprecated, and expected to be removed in the next
1633 -- Sun Nov 17 00:26:44 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1635 SimGrid (3.9) stable; urgency=low
1637 The Grasgory release: GRAS is really dead now.
1639 * Complete overhaul of the internal host structures scheme.
1642 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
1643 was considered as experimental and badly maintained since then.
1644 * Keeping it was thus a trap to our potential users, that could take
1645 it instead of MSG or SMPI by mistake despite is pity state.
1646 * GRAS seems to have very few users (if any), and no one volunteered
1647 to maintain it further. It also induces a lot of XBT code (for
1648 portability sake), that must be maintained too.
1649 * For all these reasons, we killed GRAS. If someone wants to revive it
1650 in the future, don't cry, our git history still remembers of GRAS.
1653 * Major overhaul. Merge our documentation again as time proved that
1654 splitting it was really not helping our users.
1655 * Further improve the developer documentation to help newcomers
1656 hacking on SimGrid itself. The user documentation (and in
1657 particular, the beginner documentation) is still in a sorry state.
1660 * Now works on Windows too!
1661 * Much more extensive test suite, from MPICH
1664 * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
1665 (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
1666 dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
1667 * Bug fix: let task be scheduled when the last dependency to be solved is
1668 a control dependency.
1669 * Remove SD_load_environment_script function.
1670 Use the C sg_platf function if you want to declare a platform
1674 * New function: MSG_process_get_number()
1675 * Old function documented: MSG_config()
1676 * Remove MSG_load_platform_script function
1677 Use the C sg_platf function if you want to declare a platform
1681 * Change the default value of the TCP_gamma constant (maximal size of TCP
1682 congestion window) to a more realistic 4MiB value. If you notice changes in
1683 your simulation results, you can fall back to the previous 20k tiny window
1684 by adding --cfg=network/TCP_gamma:20000 on command line.
1685 * (Hopefully) fix a bug wrt periodic availability and state traces
1686 * Bug fix: use default values at start when first event in availability/state
1687 trace is not at time 0.
1690 * remove the "new_" part of function name sg_platf_new_trace_connect
1691 (resulting in sg_platf_trace_connect), since it does not create
1695 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
1696 use case where it's really mandatory, and maintaining it was a pain in
1698 * New: xbt_fifo_search(), search an item with a user-provided
1699 comparison function instead of dumb pointer comparison.
1702 * Fix the lua deployment:
1703 Use `simgrid.init_application()` before deployment instead of
1704 `simgrid.msg_register_application()` after.
1707 * Transfer the tracing files into the corresponding modules.
1709 -- Tue Feb 5 11:31:43 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1711 SimGrid (3.8.1) stable; urgency=low
1713 The "we are told that some people want to also *install* the simgrid
1716 * Add missing file "tesh.1" to the archive.
1718 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1720 SimGrid (3.8) stable; urgency=low
1722 The Psssshiiiit release: SimGrid jumps into the Cloud.
1725 * Add an experimental interface to manipulate VMs. They are mainly
1726 process groups with very few intrinsic semantic, but they should
1727 allow you to build the semantic you want easily.
1728 * New function: MSG_host_set_property_value()
1729 * New function: MSG_process_on_exit(). To clean memory in all cases.
1730 * Bug fixes that made the host (and link) failures unusable.
1731 * Add a way to auto-restart process when the host in which they are
1732 executing comes back (ON_FAILURE="RESTART" on deployment file,
1733 MSG_process_auto_restart_set).
1734 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
1735 please stop using the old ones, they are DEPRECATED.
1737 * Deprecate functions MSG_global_init() / MSG_global_init_args()
1738 Please use MSG_init() instead. (reducing the amount of entry
1739 points in the library helps us).
1740 * Make it impossible to link against the wrong version of the lib
1741 * Deprecate MSG_clean(). No need to call it anymore.
1742 * Function MSG_get_host_number() is not deprecated anymore.
1745 * Split the doc into a user guide and a reference guide.
1746 * Start a developper guide to help people hacking on SimGrid.
1749 * Enable tracing by default. This modules rocks you should use it.
1750 * Remove option custom_flags. Now use environment variables CFLAGS
1752 * Use default cmake things to detect lua instead of home grown ones.
1753 * New option "enable_mallocators" to disable mallocators, for debugging
1754 purpose ("on" by default).
1757 * Bug fixes around the resource failures: don't let the processes
1758 survive the host they are running onto.
1759 * Add an interface to auto-restart processes when the host in which they are
1760 executing comes back.
1761 * Ensures that SIMIX_clean is called automatically. It's not part of
1762 the public interface anymore (bindings should be updated).
1765 * Bug fix for when SD_Simulate is called with a positive value: be careful
1766 when comparing doubles. Sometimes they are different for non significant
1768 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
1769 parallel task whose initial work is distributed among host according
1770 to the Amdahl's law. Such tasks are created with a parameter alpha
1771 that corresponds to the non-parallelizable part of the computation.
1772 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
1773 between two sets of workstations assuming a 1D block distribution (each
1774 workstation owns a similar share of data) on both sides.
1776 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
1777 Data redistribution will be automatically scheduled once parent and child
1778 are both scheduled. The filling of computation_amount and
1779 communication_amount structures is now done seamlessly thanks to the chosen
1781 * New function SD_workstation_dump to display various information
1782 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
1783 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
1784 bandwidth on the route onto which the task is scheduled and the amount of
1786 To divide the nominal bandwidth by 2, the rate then has to be:
1787 rate = bandwidth/(2*amount)
1788 * Compute tasks that have failed can now be rescheduled and executed again
1789 (from their beginning)
1790 * Increasing source code coverage (src/simdag is now covered at 95.8%
1794 * Re-implement time-independent trace replay using SMPI (at the
1795 smpi_smp_* level) instead of MSG. This should replace
1796 examples/msg/actions/actions.c
1797 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
1798 hindexed and structs)
1799 * Implement the exchange of non-contiguous data.
1800 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
1801 * Correct behavior of smpi/sender_gap and set its default value to 0
1802 * Add option to asynchronously send small messages to allow better
1803 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
1804 specifies the size in bytes under which messages will be asynchronously sent.
1805 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
1806 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
1809 * New C interface to define a platform: XML is now optional.
1810 For more info, please check include/simgrid/platf.h.
1811 * New interface to define random platforms from the C:
1812 For more info, please check include/simgrid/platf_generator.h and
1813 examples/msg/masterslave/masterslave_platfgen.c
1814 * Export a sg_cmdline dynar containing all the arguments we got from
1818 * Two new tracing options for adding comments to trace file so you
1819 can track your experiments (see --help-tracing for details).
1820 * New option to generate a impoverished trace file (--cfg=tracing/basic:1)
1821 * Adding the SimGrid version that generated the trace file as a comment.
1822 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
1823 * Fix to avoid key clashes on Paje links
1824 * Other minor fixes related to the Paje specification
1827 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
1828 and renamed to xbt_str_hash() and xbt_str_hash_ext().
1829 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
1830 * Greatly improve the robustness of mmalloc to user errors (such as
1831 using an area after freeing it, or freeing it twice)
1833 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1835 SimGrid-java (3.8.1) stable; urgency=low
1837 * New module: org.simgrid.trace.Trace (SimGrid trace bindings)
1838 Warning: all methods are visible, but only some of them are
1839 implemented so far. Check the source (src/jtrace.c)
1840 for further information.
1841 * New module: org.simgrid.msg.File (SimGrid File management functions)
1842 * New Module: org.simgrid.msg.VM (SimGrid interface to mimick IAAS clouds)
1843 * Change the meaning of Process.restart: now restart the process from
1844 the beginning, like MSG_process_restart in C.
1845 * Add Process.setAutoRestart: handling of process restart when failed
1847 * Add Process.getProperty, Host.getProperty, Host.getProperty: allows
1848 you to retrieve the properties of the processes/hosts
1849 * Deprecate Msg.clean(): you can just forget about it now.
1850 * New function Process.getCount(), that only works when compiling
1851 with the not yet released version 3.9 of the C library.
1853 * New context factory based on Coroutines. It mandates a modified JVM
1854 but then, the simulations run about five times faster, and there is
1855 no limit to the amount of processes (beside of the available memory).
1857 -- 2012-12-04 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1859 SimGrid (3.7.1) stable; urgency=low
1862 * Restore the prototype of MSG_process_create_with_environment() to
1863 the pre-3.7 situation by removing the kill_time argument.
1864 * Add a MSG_process_set_kill_time() function instead.
1867 * Fix weird behaviors when dealing with parallel tasks.
1870 * Simgrid is now built as a dll.
1871 * Simgrid-java now works on Windows.
1872 * Simgrid-Java is now included into Windows package.
1875 * First pre-build package for MacOSX.
1878 * Fix compilation when using MSG_USE_DEPRECATED.
1879 * Fix some compilation issues on Macs and Windows.
1880 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
1881 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
1883 We discovered that the Lua console is broken, but we are missing the
1884 manpower to fix it right now. The problem existed in 3.7 too, so we
1885 are not blocking the release for that. Sorry if you depended on this
1886 feature, any help would be really welcome.
1888 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1891 SimGrid-java (3.7.1) stable; urgency=low
1893 The "Java aint got to be bloated and slow" release
1896 * Various internal cleanups and performance improvement
1897 Simulations are expected to run up to twice faster or so
1898 * Make Process.kill(process) an instance method, not a static one
1899 * User processes are not java.lang.Thread subclasses.
1900 This breaks the compatibility (sorry), but previous API was
1901 brain-dead, making it impossible to have non-trivial
1902 initializations in the process constructor.
1903 * Require a full constructor per Process sub-class.
1904 Kinda breaks the compatibility (sorry), but this allows a much more
1905 efficient way to launch the processes at simulation startup.
1906 * Do not embeed our version of semaphores, java 1.5 can be considered
1907 as sufficiently prevalent for us to not dupplicate its features.
1911 * Add examples for almost every part of the API
1912 We spotted and fixed a lot of bugs in the process
1914 * New module: asynchronous communication API
1915 * New function: Process.sleep()
1916 It takes milliseconds as argument, just as java.lang.Thread.sleep()
1917 * New module: org.simgrid.msg.Mutex (SimGrid mutexes)
1918 * New module: org.simgrid.msg.RngStream (RngStreams random generators)
1920 -- 2012-06-12 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1922 SimGrid (3.7) stable; urgency=low
1924 The "spring cleanups (before the next Big Project kicks in)" release.
1927 * We can specify the SMPI latency/bandwidth factor with command line
1928 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
1929 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
1930 You can also use the "config tag" from platform file by adding this line
1931 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
1932 (see "example/platforms/tag_config.xml" to use "config tag").
1933 Note that the command line supersedes the platform file configuration.
1934 * Change the correction factors used in LMM model, according to
1935 the latest experiments described in INRIA RR-7821.
1936 Accuracy should be improved this way.
1937 * Use the partial invalidation optimization by default for the
1938 network too. Should produce the exact same results, only faster.
1939 * Major cleanup in surf to merge models and split some optimization
1940 mechanisms from the core of the models. As a result you can now
1941 specify which model to use (e.g., --cfg=network/model:LV08
1942 --cfg=cpu/model:Cas01) and which optimization mode to use
1943 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
1944 Incompatible combinations should err at initialization. See
1945 --help-models for the list of all models and optimization modes.
1946 * The CLM03 workstation model was dropped for simplicity because it
1947 used the deprecated CM02 network model. Use default instead.
1948 * Rename the TCP_gamma configuration option to network/TCP_gamma
1949 * Rename the coordinates configuration option to
1950 network/coordinates, and document it
1951 * Use now crosstraffic keyword instead of the terribly misleading
1952 fullduplex keyword. It is activated by default now in the current
1953 default model, use --cfg=network/crosstraffic:0 to turn it off.
1954 * Ongoing refactoring the model parsing to make XML files optional
1955 See include/simgrid/platf.h for details (still to be completed)
1958 * Major overhaul of the documentation. Almost instructive now :/
1959 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
1960 functions and friends. This interface was considered as
1961 deprecated since over 2 years, it's time to inform our users that it is.
1962 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
1963 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
1964 use these (crappy) functions in your code.
1965 These functions will be removed soon. Stop using them now.
1966 * Deprecate MSG_get_host_{table,number}
1967 Implement MSG_hosts_as_dynar() instead.
1968 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
1969 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
1972 * Stabilize the parallel execution mode of user contexts
1973 * Introduce configuration variables to control parallel execution:
1974 - contexts/synchro: Synchronization mode to use when running
1975 contexts in parallel (either futex, posix or busy_wait)
1976 - contexts/parallel_threshold: Minimal number of user contexts
1977 that must be part of a scheduling round to switch to parallel
1978 execution mode (raw contexts only)
1979 * Fix bugs that prevented to use suspend/resume along with
1980 synchronization structures.
1981 * Fix bugs in process termination that lead to invalid memory access
1982 in very specific conditions.
1985 * Introduce a parallel mode for the models (controlled by surf/nthreads
1986 configuration item). In our tests, running the models in parallel
1987 never lead to any speedups because they are so fast that the gain
1988 of computing each model in parallel does not amortizes the
1989 synchronization costs, even when ultra fast futexes are used.
1990 This is released anyway because YMMV.
1993 * Performance boost by using a swag internally to compute the set of
1994 tasks that are finished and should constitute the return value of
1998 * Enable it by default now that it is considered rather stable.
2001 * Documentation of the tracing functions.
2002 * Performance gains when tracing categorized/uncategorized resource
2003 utilization by avoiding calls to get route when updating resource
2004 variables. LMM constraints are being used instead.
2005 * API changed to set task categories. Use MSG_task_set_category instead
2006 of TRACE_msg_set_task_category, and SD_task_set_category instead
2007 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
2008 * Bugfix for graphicator, routes not correctly obtained, memory leaks
2009 * Examples for link user variables added (see at examples/msg/tracing/)
2010 * Deprecated function TRACE_msg_set_process_category completely removed
2011 * Trace header updated according to the latest Paje file format
2012 * Tracing network lazy updates, no longer obligate users to use full updates
2013 * --cfg=tracing/platform:1 also registers power/bandwidth variables
2014 * Experimental: let user code declare/set/push/pop application states for hosts
2015 * API changed to allow the manual creation of graph configuration files
2016 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
2019 * Improve the API of Lua MSG bindings, using the Lua spirit.
2020 * Each simulated process now lives in its own Lua world (globals are
2021 automatically duplicated). It helps writing simulators. Will allow
2022 to run Splay programs within SimGrid in the future.
2023 * Add a Chord example in Lua, equivalent to the MSG one.
2026 * Start the implementation of a solution to express temporal
2027 properties, not only local assertions. This is still an
2028 experimental work in progress, stay clear from it to be safe.
2032 - Add new runtime parameters --help-logs and --help-log-categories
2033 to display information about supported logging parameters and
2035 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
2036 don't exists anymore.
2037 * Mallocators: allow value NULL for the reset function.
2039 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
2040 create homogeneous dictionaries, where all the elements share the
2041 same free function. Non homogeneous dictionaries will be
2042 deprecated in the next release.
2043 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
2044 - Multi-level dictionaries are deprecated.
2046 - new function xbt_dynar_search_or_negative() that is useful when
2047 you have less than 2 million elements in your dynar and don't
2048 want of the extra complexity of catching exceptions when the
2049 element is not found.
2051 - Make xbt_os_thread module (for thread portability) public.
2052 Documentation is still to come, sorry.
2054 - Cleanups and simplifications to make it maintainable again.
2055 - Exotic features (such as memalign and valloc) were removed.
2056 - The metadata were extended and improved so that the
2057 model-checker becomes able to explore and inspect the heaps.
2058 - This may induce a performance drop when enable_model-checking is
2059 ON in cmake (even if it's not used in the simulation), but it is
2060 necessary at this point to get MC working.
2062 Turn model-checking OFF if simulation performance matters to you.
2063 Not enabling it at runtime is not enough, disable it in cmake.
2065 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2068 SimGrid (3.6.2) stable; urgency=low
2070 The "Not coding new stuff allows to polish old things" release.
2073 * New bindings to the NS3 packet level simulator (experimental)
2074 * Use the raw (efficient) execution contexts instead of the sysv
2075 (portable) ones when possible.
2076 * libpcre is now mandatory in any cases since not using it led to
2077 severe performance loss and possibly other issues
2078 * Update the XML platforms:
2079 - G5K: include the latest machine in Nancy
2080 - GridPP and LCG: new platforms
2081 * Documentation was partially updated, at least (more to come)
2083 Bug fixes, cosmetics and small improvements
2084 * Free terminated processes before the end of the simulation to avoid
2085 exhausting the memory of users having very dynamic amount of
2087 * Bug fix and cosmetics about canceling non-running tasks
2088 * Bug fix about the dot loader's issues when using libcgraph
2091 * Create an installer for windows with nsis (amd64 and win32)
2092 - Add an hello world project to illustrate simgrid project creation.
2093 - Embed libpcre into the Simgrid installer to avoid
2094 its compilation burden
2095 * The raw execution contexts should work on Apple now
2096 * Port to Windows 64 bits
2097 - Sysv contexts now have an implementation for this arch
2098 - GRAS communication features now support this arch
2099 * Drop support for borland compiler on windows
2100 - this code was not maintained, and we kinda depend on gcc nowadays
2101 * Fix portability issues on kfreebsd/gnu: build error about semaphores
2102 * Fix portability issue on unstable ubuntu: linker became picky on
2105 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2107 SimGrid (3.6.1) stable; urgency=low
2109 The "Oops, we broke Macs too" release
2112 * Fixed contexts detection so that raw ones are used when possible
2113 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
2114 leads to a strange error, with user code segfaulting sometimes when
2115 the generated code is not perfectly aligned (which is not
2116 controllable from the user side, depends on the amount of code)
2119 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
2121 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2123 SimGrid-java (3.6) unstable; urgency=low
2126 * Split of every thing from simgrid v3.5 into a separate package.
2128 -- 2011-10-05 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2130 SimGrid (3.6) stable; urgency=medium
2132 The Summer Release, also known as the "OMG! They Killed Kenny!" version
2135 * Bindings now constitute their own package, separated from the main one.
2136 Rationale: reduce our maintenance nightmare by reducing the module coupling
2137 They will soon be released on their own on gforge.
2139 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
2140 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
2142 GRAS: It is not considered as stable anymore, but experimental. Sorry.
2143 * It's not quite deprecated for now because we have no replacement,
2144 but it may soon become the case.
2147 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
2148 * Fortran: New user-level cache variable to store the rank of the running
2149 process. This improves performance by an order of magnitude.
2150 * C: New coccinelle script to automatically locate and modify global and
2151 local static variables.
2152 * Improved SMPI network model with a sender-side gap to account for multiple
2156 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
2157 only say if a communication is finished, no matter whether it succeeded or
2158 failed. You can call MSG_comm_get_status() to know the status of a finished
2160 * New function MSG_task_dsend() to send a task and detach it. When a
2161 communication is detached, you are never notified of its success or failure
2162 and the memory is released automatically once it is finished. This function
2163 is useful when you don't care about the end nor the success of a
2165 * Change the prototypes of action replay. Sorry for inconvenience,
2166 but this is really more efficient this way (and to adapt your code,
2167 you just have to fix the initialization, that shouldn't be too long)
2168 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
2169 ever managed to do anything useful with it.
2170 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
2171 takes a dynar of communications. It returns immediately and gives the
2172 index of a finished communication (if any).
2173 * New example: a basic implementation of the Chord P2P algorithm.
2176 * New model for multi-core CPUs. You can now use the core attribute to
2177 precise the number of cores of a host. This is a basic model. Every
2178 process running on the host receives at most the power provided in
2179 the DTD (throughput<=power). Total throughput of process cannot exceed
2181 * New peer tag. This peer tag creates a tiny AS comprising a host and a
2182 router linked by an up-link and a down-link (possibly asymmetrical).
2183 This kind of pattern allows to easily build last-mile model style platforms.
2184 Aggregating such patterns in a rule-based AS is thus the technique of
2185 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
2186 * New model for Vivaldi routing. We transformed the Vivaldi network model
2187 into a Vivaldi routing model (based on the rule-based model). This allows to
2188 combine Vivaldi based latencies with last-mile platforms.
2191 * Added a check for NaN of IEEE754 infinite in the double entries of
2193 * Introduce a new context factory "raw", highly inspirated from the
2194 ucontext factory, but using manually crafted functions in assembly to
2195 do the work in an efficient manner.
2196 * Allow to change the used context factory at run time, not only at
2197 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
2198 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
2199 contexts at runtime (only with raw contexts or ucontexts).
2200 * Completely rewrote this module to allow parallel execution of user
2201 processes. Use --cfg=contexts/nthreads:N to execute user processes
2202 with N parallel threads (the default is 1, meaning no parallelism).
2203 * Allow to decide dynamically between sequential and parallel modes.
2204 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
2205 processes in parallel only when their number is greater than or equal to P
2207 * Added a check for NaN of IEEE754 infinite in the double entries of
2211 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
2212 won't output the state of processes when interrupted with Ctrl-C
2213 * Add a new function xbt_dynar_to_array that transforms a dynar into a
2214 NULL-terminated array. This may solve backward compatibility issues
2215 due to the change to return type of SD_simulate. See also:
2216 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
2217 * Add new macros with variable number of arguments.
2218 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
2219 - in xbt/asserts.h: xbt_assert
2220 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
2221 - in xbt/ex.h: THROWF and RETHROWF.
2222 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
2224 * Change xbt_die() to accept a format string with arguments, just like printf.
2225 * New data structure: xbt_lib_t, like a dict but more general and with better
2229 * New configuration options
2230 Options triva/categorized and triva/uncategorized can be used to generate
2231 graph configuration files for Triva visualization tool.
2232 * Configuration option tracing/platform is renamed to tracing/categorized
2233 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
2234 * New TRACE_user_link_variable interface:
2235 User provides the name of the link and the tracing variable to attach to it
2236 * the declaration of tracing categories must be done after the environment
2238 * simpler tracing interface, just one way to declare categories
2239 TRACE_category or TRACE_category_with_color, it is up to you
2240 * links in the trace file are again identified by their names
2241 * trace contains the full platform hierarchy exactly as declared using the ASes
2242 * Options tracing/msg/[task|process]:1 groups the process by hosts
2243 for both cases, tasks and processes must have names that are unique during the simulation
2244 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
2245 * The experimental option tracing/msg/volume is deprecated
2246 its functionality may be reincorporated if needed
2248 The tracing generates a trace file with unordered timestamped events,
2249 because of the way the core simulator (surf) works. A script available
2250 at the tools directory (fix-paje-trace.sh) can be used to put the events
2251 in order. We have changed the tracing so it can generate ordered timestamped
2252 events in the final trace, but depending on the simulator (and how much time
2253 is simulated) that can lead to a huge memory utilization. It is deactivated
2254 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
2256 Build Infrastructure
2257 * Define a SIMGRID_VERSION macro in simgrid_config.h.
2258 - We are trying hard to keep the API stable, but it may happen that
2259 some things change (we're a research project after all, not a
2260 nuclear plant operating system). If such things should happen, you
2261 could rely on that macro to adapt.
2262 - current value: 30600 for 3.06.00, aka 3.6
2263 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
2264 a number that can be compared with SIMGRID_VERSION.
2265 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
2266 assertions and verbose/debug logging events are disabled at compile time.
2268 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2270 SimGrid (3.5) stable; urgency=medium
2273 * New feature to any SimGrid-based simulator: Model-Checking
2274 Check SIN#1 for more details.
2277 * New Model SMPI (three-interval linear regression for correction factors)
2278 See RR-7426, available at http://hal.inria.fr/inria-00527150
2279 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
2280 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
2281 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
2282 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
2283 * See also src/smpi/README
2288 - Tracing API changes: TRACE_start and TRACE_end should not be called
2289 by user-code. They are automatically called by simulators created
2290 with SimDAG, MSG and SMPI if the toolkit is compiled with
2291 tracing_enabled=ON. Categories declaration and utilization remain the
2292 same for MSG and SimDag.
2293 - A function was added to the tracing API to declare categories with
2295 - TRACE_category_with_color (char *category, char *color)
2296 where color must be in the following format
2297 "%f %f %f", red, green, blue
2298 and red, green, blue are float values in the interval [0, 1]
2299 - User can specify NULL as color parameter, or continue calling
2300 TRACE_category (cat)
2301 On that case, the tracing system will define random colors
2302 - The following command-line options are supported:
2303 --cfg=tracing/filename:msg.trace
2304 --cfg=tracing:1 (activate tracing, needed to use others)
2305 --cfg=tracing/platform:1 (categorized resource use)
2306 --cfg=tracing/uncategorized:1 (uncategorized resource use)
2307 --cfg=tracing/msg/task:1 (task creation)
2308 --cfg=tracing/msg/process:1 (process creation, migration)
2309 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
2310 --cfg=tracing/smpi:1 (SMPI interface tracing)
2311 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
2312 - examples of examples/msg/tracing updated
2314 - DAXLoader and DOTLoader functions can generate tasks with categories
2315 - A new function to attribute a category to SD tasks:
2316 TRACE_sd_set_task_category (SD_task_t task, char *category)
2317 * Tracing the MPI interface implemented by SMPI
2318 - Collective operations are traced with states
2319 - Point-to-Point operations are traced with states/links
2320 - Tracing activated by a parameter "-trace filename" passed
2321 to smpirun during execution (considering that simgrid
2322 is compiled with tracing enabled)
2323 - To run the simulation with gdb, the simulator
2324 accepts --cfg=tracing/smpi:1 to trace SMPI
2325 - tesh files to check if smpi tracing is ok
2326 - See examples/smpi/NAS/DT-trace
2327 * GTNetS tracing re-worked
2328 - adaptation to the tracing system of GTNets to cope
2329 with modifications regarding the fullduplex mode
2330 - new tesh files to check if gtnets tracing is ok
2333 * Asynchronous communications through the functions:
2334 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
2335 * New function: MSG_load_platform_script()
2336 to make possible using a lua script instead of XML files to set up platforms
2337 * New function: MSG_set_function
2338 to associate functions to processes, used when bypassing the parser
2339 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
2341 Platforms: Add some more examples in examples/platforms
2342 * Grid'5000: see www.grid5000.fr
2343 * *_30000_hosts.xml: various huge files [mainly scalability testing]
2346 * Change the XML format. This is a very important modification. SimGrid
2347 3.5 introduces a new hierarchical format based on the notion of
2348 Autonomous Systems. Compatibility with old format is ensured
2349 through the perl script provided in the install bin directory
2350 bin/simgrid_update_xml.
2351 It is now possible to build platforms with specific routing
2352 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
2353 connect several platforms together. We will try to provide soon
2354 set of realistic platforms exploiting these properties (have a
2355 look at examples/platforms/ for the moment).
2356 * Take the opportunity of the XML format change to be a good XML citizen:
2357 rename link:ctn to link_ctn and similar changes (also dealt with by
2359 * Add a new routing scheme (rule-based) using regular expressions. It
2360 enables to have an extremely low memory footprint when the
2361 underlying routing is simple and can be compactly described. You
2362 need to have libpcre4-dev (perl regular expressions) installed if
2363 you want to use this routing scheme.
2364 * Revive the cluster TAG and allow to easily and efficiently (both in
2365 term of memory and speed) connect clusters together. Have a look
2366 at teshsuite/simdag/platforms/ to see how this can be done. With
2367 this tag, you can create clusters with thousands of tasks at no
2368 cost (have a look at examples/platforms/).
2369 Note: clusters are implemented as ASes, so there is no need for an
2370 enclosing AS tag if you have only one cluster in your platform.
2371 * Add new generic functions in the public interface that allows the user
2372 to call SURF 'create_resource' methods from your code (same
2373 functionality as the XML bypass mechanism but with a much lighter
2375 * Add a new model (enabled through command line --cfg=network/model:SMPI)
2376 that uses a piecewise linear approximation to produce better
2377 results when exchanging small messages.
2378 * Add a new parameter to handle correctly full duplex link and account
2379 for interferences between uplink and downlink communications
2380 (activate with --cfg=fullduplex:1).
2383 * Rename the SD_READY (all dependencies are satisfied and task is
2384 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
2385 dependencies are satisfied) state.
2386 This prevents a confusion between the notion of "ready to schedule"
2387 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
2388 simulated" (SD_RUNNABLE) used by the simulation kernel.
2389 * Change the way a task is considered as ready. Instead of removing
2390 dependencies when a task is done, a counter is decreased. This way,
2391 it is always possible to reach ancestors thanks to the
2392 SD_taks_get_parents function (even after the end of the simulation.)
2393 * Change the return type of SD_Simulate from (SD_task_t*) into
2394 xbt_dynar_t. This function was in handling a dynar internally and
2395 converted it into a NULL terminated array for historical reasons.
2396 * New function SD_dotload(char*) to load a DAG described in dot
2397 format. This loader and the corresponding examples require the
2398 installation of the graphviz library.
2399 * Fix a bug in the management of tasks of size 0 in the surf network
2400 models. This problem was only visible with SIMDAG and you should
2401 thus disregard results produced with earlier versions if you
2402 relied on this feature (some tasks were blocked because of this).
2403 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
2404 even though your applications were doing only point-to-point
2405 communications and sequential computations. Now you can really use any
2406 model you want (of course, if you create real parallel tasks, which are
2407 not implemented in most models beside ptaskL07, this will abort).
2408 * Add an example that schedules a DAX on an heterogeneous platform
2409 using a Min-Min strategy.
2410 * New function SD_workstation_get_current_task() that returns the kind
2411 of task currently running on a workstation in the sequential access
2413 * Raise some warnings when unexecuted tasks remains at the end of the
2414 simulation. This is usually caused by cycles in the DAG.
2417 * New function: SIMIX_process_set_function() called by MSG_set_function
2418 * Change the underlying waiting queue in semaphores so that a process
2419 can wait on several of them simultaneously (as in waitany).
2420 * Fix the way to handle tokens in semaphores so that all access patterns
2421 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
2422 * kill the dirty pimple SIMIX_message_sizes_output()
2423 Please use (proper) visualization instead
2426 * New data container: setset (set of sets of elements)
2427 * New module: mmalloc (mapped malloc, allowing to have several
2428 independent segments of malloc)
2429 * New function: xbt_dict_cursor_set_data()
2430 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
2431 * New function: xbt_dynar_is_empty()
2432 * New function: xbt_fifo_get_last_item()
2433 * Fix xbt_dynar_shrink(): use the right element size.
2434 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
2435 uninitialized areas during expand.
2436 * Fix semaphores: previous implementation was severely broken.
2437 * Use library init/fini functions for our initialization.
2438 - you can use logs and other feature as soon as you want in your
2439 code (even before the xbt_init / MSG_init)
2440 - xbt_exit is now a no-op and produce a warning when used.
2443 * Port GRAS to new SIMIX mechanisms. This allows gras users to
2444 benefit from the latest improvement to the simulation kernel.
2445 * Kill measurement sockets for now. If you rely on them, sorry. This
2446 release is not for you. This feature will be reintroduced in the
2447 future, but we cannot delay the release any further.
2448 * New function: gras_msgtype_get_name().
2449 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
2450 * Fix (at last) the pmm example: it should not randomly fail anymore.
2452 Build chain: bug fixes and overall polishing
2453 * Cmake is now stable enough. Hence, we killed the autotools.
2454 * Port to windows ( TM :)
2455 * Fix the 'make install' target.
2456 No need to use 'make install-simgrid' anymore
2457 * Introduce a 'make dist' target compiling a *source* archive
2458 'make package' compiles a binary archive
2459 * Compile java files only on need
2460 * Add --cd and --setenv command line options to tesh
2461 * Out of source builds are not fully supported yet, but we are close
2462 * Enable supernovae and optimization flags by default for our users
2465 * Add layer to set up environment directly from lua, without XML.
2466 * The effect of gras_stub_generator can be achieved through
2467 lua too (check examples/gras/console/ping_generator.lua)
2469 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2471 SimGrid (3.4.1) stable; urgency=low
2473 The "Polishing easter eggs is probably a good idea" release.
2474 This is a bug fixes release only.
2478 * Fix a bug preventing the tasks from begin garbage collected.
2481 * Fix a bug occurring when a host involved in a communication fails.
2482 This was not detected properly by the other peer involved in the
2483 communication. Now, it's reported as a network error.
2486 * Warn the user about loop dependencies in data flow of DAX files
2487 * Obey the control-flow dependencies of DAX files
2490 * Add option "enable_smpi" allowing to not compile SMPI.
2491 Probably useful for the (Mac) users experiencing a build error here
2492 * Improve the detection of lua5.1 and ruby1.8
2494 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
2496 SimGrid (3.4) stable; urgency=low
2498 The "Easter in Cargese" release. Also known as (major changes):
2500 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
2501 ~> bindings were greatly improved
2502 ~> new tracing infrastructure for better visualization introduced
2504 * the "Welcome to configury modernity" release.
2505 ~> we switched from autotools to cmake, and improved our cdash
2508 A more detailled list of changes follow (full detail in svn log).
2510 Java Bindings: Various Cleanups
2511 * (install java-gcj-compat-dev on debian-like to use them)
2512 * Remove put/get: no need to export deprecated interface in Java
2513 Use send/receive instead.
2514 * Cleanup the examples and add a README per directory
2515 * Remove example autoDestination (that's the only way to go now)
2516 * Remove example explicitDestination (was a plain copy of basic)
2517 * Make JniException a runtime exception, so that there is no need to
2518 declare the fact that you may encounter such a beast. I guess that
2519 nobody will ever want to survive such error.
2520 * Create specific errors for each MSG case of failure:
2521 host failure, transfer failure, timeout, task cancelled
2522 * Cleanup the exceptions that may get thrown by each function
2523 * Other internal cleanups in Java bindings. Performance still bad :/
2524 Ruby and Lua Bindings: create them
2525 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
2526 * That's new and great, you should try them out.
2527 Same functionalities than Java bindings, only even less polished
2529 * Kill the useless "rate" argument of SD_task_get_execution_time()
2530 Everyone used to provide -1 as a value, it was not used, and the
2531 semantic of a possible use wasn't even clear.
2532 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
2533 either as comm costs or compute costs to mean that there is no
2534 such thing for that specific task.
2535 * Add a SD_task_set_name() function
2536 * Fix SD_task_unschedule() on typed tasks
2537 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
2538 * In DAX loader, accept useless 'level' attributes to <job> since
2539 LIGO DAGs have them (seem to be to ease graphical representation).
2541 * Add an example masterslave_mailbox.c using send/receive and not
2542 the deprecated put/get interface.
2543 * Kill the MSG_paje_output() function. It's a noop since 2 years.
2544 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
2546 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
2547 (declare MSG_USE_DEPRECATED to still have the old name)
2548 * Add a MSG_task_set_data() function
2549 * About trace replay (see examples/msg/actions):
2551 - Allow to work with splitted trace files for each process
2552 Give the specific trace file as argument of each process,
2553 and call MSG_action_trace_run(NULL)
2554 You can still have one merged file for all processes.
2555 - Fix implementation of collective operations
2556 * Allow task_execute() on 0-sized tasks (closes #10063)
2558 * This is the first release of SimGrid where SMPI is not considered
2559 beta anymore (even if some corners should still be improved)
2560 * Port over the new SIMIX_network submodule (internal refactoring)
2561 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
2562 * Implement more missing elements of the standard:
2564 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
2566 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
2567 MPI_Scan() MPI_Get_processor_name()
2568 - Added implementation of missing case for Alltoall (warning: it's
2569 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
2570 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
2571 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
2572 SMPI_MPI_Allgatherv()
2573 * Bug fixes include:
2574 - MPI_Waitsome() was broken
2575 - Allow relative includes in smpicc
2576 - Command line cfg argument 'reference_speed' was ignored...
2577 - Some functions did not properly lead to auto-benching of user code
2578 - smpicc passes -O2 by default (just like openmpi one)
2580 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
2581 * Bug fixes about timeouts during communications
2582 * add SIMIX_message_sizes_output() as a pimple to write to file the
2583 amount of messages per size. Use gnuplot to get histogram.
2584 Pimple because that's the only user-visible function of simix,
2585 defined directly in xbt.h (irk, sorry)
2587 - Add a SIMIX_sem_get_capacity() function
2588 - Fix interactions with processe resume/suspende
2589 - release_forever() was stupidly broken
2590 - Fix SIMIX_display_process_status() for processes in a semaphore
2591 - Make SIMIX_sem_block_onto() user-visible
2592 * Refactoring context stuff:
2593 - Use pseudo-OOP for better modularity
2594 - reimplement SIMIX_process_kill() without process_schedule() so
2595 that the latter can take as invariant that it is called from
2597 - Merge context_start into context_new for sake of simplicity
2599 * Add a Vivaldi network model, coded live during SUD'10 ;)
2600 * Rename configuration variables to start a hierarchy:
2601 o cpu_model -> cpu/model
2602 o network_model -> network/model
2603 o workstation_model -> workstation/model
2604 * New configuration variables:
2605 o network/bandwidth_factor: correction to bandwidth
2606 o network/latency_factor: correction to latency
2607 o netwotk/weight_S: correction to the weight of competing streams
2608 * Add a long description to the models, that users can see with such
2609 argument on the command line: --cfg=cpu/model:help
2610 * --help-models display the long description of all known models
2612 * config: add the ability to set a default value after registration
2613 Does not override any previously set value (e.g. from cmd line)
2614 * dict: allow to have integer key and data.
2615 When so, you need to use the following functions
2616 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
2617 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
2618 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
2619 In contrary to regular dicts, the key is not malloced before copy.
2620 Mixing scalar and regular elements in the same dict is not tested
2622 * Allow to use xbt_dynar_shrink() to expend the dynar instead
2623 Tracing for Visualization:
2624 * SimGrid is now instrumented in order to generate a trace file for
2625 visualization analysis: to use it, need to compile SimGrid with the
2626 "tracing" option enabled, and instrument the program using SimGrid with
2627 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
2628 (among other functions).
2629 * The instrumentation only traces the platform utilization for now
2630 * Documentation to use the tracing functions and how to analyze the
2631 traces with the Triva tool is written.
2632 * More information about: SimGrid FAQ (in the section Tracing Simulations
2635 * We moved to cmake as default build system. Autotools support will
2636 be dropped soon. Check the FAQ for more info about how to use it.
2637 * Greatly improved our cdash/ctest interactions
2638 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
2639 * Added memory checking tests with valgrind; lot of memleak fixing.
2640 This may be the first release of simgrid with so few memory issues
2641 * Added code coverage tests.
2642 Our coverage is still improvable, but at least we see it on cdash.
2644 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
2646 SimGrid (3.3.4) stable; urgency=low
2648 The "Desktop Grid needs love too" release (also called Xmas release).
2650 Models improvements:
2651 * Major speedup in the maxmin system solving by using lazy evaluation
2652 Instead of solving completely the maxmin system at each iteration,
2653 only invalidate (and recompute) the modified parts.
2654 This new feature is enabled in default models but you can try to
2655 turn it on with "--cfg:maxmin-selective-update=1" for other models.
2656 * Cas01 IMproved as default CPU model
2657 This CPU model is the same Cas01 model, but it uses the
2658 maxmin-selective-update flag and a heap structure to manage
2659 actions on SURF kernel.
2660 It reduces the complexity to find the next action to finish and,
2661 consequently, it's faster than the old Cas01.
2662 This is the new default CPU model (Cas01).
2663 * Rename the old Cas01 model to Cas01_fullupdate
2664 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
2665 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
2666 * CpuTI (CPU Trace Integration)
2667 A new CPU model whose objective is simulate faster when using
2668 availability trace files.
2669 Instead of using a full featured, over engineered maxmin system for
2670 CPU modeling, this model does the pre-integration of traces files
2671 to calculate the amount of CPU power available, and so, executes
2672 faster than the old CPU models.
2673 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
2674 * Use LV08 as default network model since it gives better accuracy
2675 for small messages and shouldn't change things for big ones.
2676 Use --cfg=network_model:CM02 to get the previous behavior.
2679 ******************************************
2680 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
2681 ******************************************
2682 * The new CPU model may changes simulations!
2683 The point is that events occurring at the exact same timestamp
2684 are not scheduled in the same order with the old and new
2685 version. This may be enough to completely change the execution
2686 of simulations in some cases.
2687 * The new network model will change simulations!
2688 This new model is more realistic than the previous one, so you
2689 should consider redoing your old experiments with this model.
2690 Sorry for the inconvenience.
2693 * Introduce the supernovae compilation mode
2694 When compiled that way, the whole SimGrid (or almost) is put in a
2695 single compilation unit and compiled in one shoot.
2696 This is to help gcc which has difficulties to inline stuff from one
2698 The speedup seem to be above 15%, althrough more tests are needed on
2699 amd64 to confirm that gain.
2702 * Port of MSG's mailbox on top of SIMIX network
2703 The put/get mechanism was greatly simplified on the way.
2706 * New SIMIX network module. Provides:
2707 - Mailbox: rendez-vous mechanism to find with who you want to speak
2708 - Synchronous send/recv: easier and hopefully faster since the
2709 logic is handled in the maestro process directly now
2710 - Asynchronous send/recv: you dreamt of it? It's here now
2711 Too bad that nobody cared enough to propagate the change to MSG.
2712 * Add semaphores as SIMIX synchronization mechanism.
2715 * new function SD_daxload(char*) to load a DAX file
2716 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
2717 * Introduce typed tasks. Specify its kind and cost at creation.
2718 At scheduling, just give where it should be placed, and the cost
2719 for each involved resource is automatically computed.
2720 Existing constructors so far (more to come of course):
2721 - SD_task_create_comm_e2e() for end-to-end communication
2722 - SD_task_create_comp_seq() for sequential computation
2723 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
2724 * new function SD_task_dump() for debugging display
2725 * new function SD_task_dotty(task,FILE*) writing to file the info
2726 about the task in dotty format
2727 * SD_task_dependency_exists() can now cope with having one of its
2728 arguments NULL. If so, it tests whether the other argument has any
2730 * Add getters on list of preceding/following tasks:
2731 SD_task_get_parents(task) and SD_task_get_children(task)
2732 * Add getters on amount of workstations and list:
2733 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
2734 * Add getter on task kind: SD_task_get_kind(task)
2735 * Update the start_time and finish_time of tasks on completion/failure
2736 * Bugfix: Remove task from state swags when destroyed
2739 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
2742 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
2743 dynar with one separate thread per value of the dynar.
2744 * Change the prototype of xbt_thread_create(), sorry.
2745 Added a boolean parameter indicating whether we want to join this
2746 thread (used in SG only for now)
2747 * Implement xbt_thread_join and xbt_thread_yield in SG also.
2750 * GTNetS wrappers should now be usable again (and betterly tested too)
2751 * Fix a major regression from 3.2 where the timeout provided to
2752 MSG_task_put_with_timeout() was used as absolute time before which
2753 the comm should be done.
2754 * Start to fix the <cluster> tag.
2755 - Internal links should be good now (beside of the loopback, which
2756 use the private link instead)
2757 - paths to the external world is still rather broken
2758 - the <route:multi> tag is just broken. Actually that's brain-dead.
2759 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
2760 to make it less stupid
2761 ** Check your platform with teshsuite/simdag/platforms/flatifier **
2762 * Fix a source-level compatibility glitch from 3.2: after defining
2763 MSG_USE_DEPRECATED, you can use the old name
2764 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
2765 * Allow to compile from the SVN with automake 1.11
2766 * Fix some problems when using the "start_time" tag in deployment XMLs.
2767 * Fix #8569: XBT/synchro.h has redundant declarations
2768 * Fix #8563: MSG return values and exceptions
2769 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
2770 * Integrate patch #8636: Obey DESTDIR when installing documentation.
2771 Thanks to Robson Peixoto.
2772 * Fix a vicious bug in dictionaries inducing that some elements were
2773 not freed on xbt_dict_free()
2775 Portability report of this version:
2776 * Main portability targets:
2777 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
2778 on (amd64/i386/ia64)
2779 - mac leopard on i386
2780 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
2781 but nothing critical.
2782 * Other platforms: windows, AIX and others were not tested for this release
2784 Timing report of this version:
2785 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
2786 scenario parameters). From 8h to a few seconds in desktop grid settings.
2787 * Supernovae brings about 25% speedup on i386.
2789 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
2791 SimGrid (3.3.3) stable; urgency=low
2793 The "Need for Speed" release.
2795 The timings done to validate the 3.3.2 were faulty.
2796 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
2798 The problem was a conversion from a manually handled vector to
2799 xbt_dynar_t on the critical path.
2800 xbt_dynar_foreach calls functions, inducing stack management crap.
2802 We inlined these functions and xbt_dynar_foreach is now breath taking.
2803 We also inlined xbt_swag_belong on the way.
2805 Here are some approximate speedup measurements (on master/slaves
2806 simulations lasting between 10s and 20s each):
2807 3.3.1 -> 3.3.2: about same performance
2808 3.3.2 -> 3.3.3: 40% speedup
2809 3.3.1 -> 3.3.3: 40% speedup
2810 3.3.1 with inline patch -> 3.3.3: 30% speedup
2812 Our reading is that the refactoring which occurred in 3.3.2 made us
2813 suffer much more from the xbt_dynar_foreach low performance, but
2814 once we solved this, this refactoring proved to be very performance
2815 effective. From the 40% speedup, somehow, 10% are due to the
2816 inlining and 30% to the refactoring.
2818 That's a pitty that gcc cannot inline functions placed in other files
2819 alone. We have to choose between:
2820 - break the encapsulation (by putting private data structures and
2821 accessors in headers files to help gcc)
2822 - live with low performance
2823 - switch to a decent compiler such as icc (not quite possible).
2825 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
2827 SimGrid (3.3.2) stable; urgency=low
2829 The "Simplicity does not preceed complexity, but follows it" release.
2831 The main contributors of this release were (lexical order):
2832 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
2835 * Extract the routing logic into its own object.
2836 (was dupplicated in network.c and workstation_LV07.c;
2837 Allows to implement other ways of storing that info)
2838 => kill now useless network_card concept
2839 - Use dynar to represent routes (instead of void** + int*)
2840 - kill link_set (use surf_network_model->resource_set instead)
2841 - Add a command-line option to choose the routing schema to use
2842 - Add three new models:
2843 * Floyd (shortest path computed at initialization)
2844 * Dijikstra (shortest path recomputed all the time)
2845 * Cached Dijikstra (shortest path computed on need)
2846 All these models where contributed by Silas De Munck, and are
2847 described in his ICCS09 paper.
2849 * Simplify model declaration
2850 (less redirections, less function to write when defining a model)
2851 - Factorize stuff between models:
2854 surf_model_resource_set(model)
2855 surf_model_resource_by_name(model, name)
2856 - Unify the types of models in s_surf_model_t (using an union)
2857 - Embeed fields of common_public directly into s_surf_model_t
2858 - Rename model methods:
2859 action_free ~> action_unref
2860 action_change_state ~> action_state_set
2861 action_get_state ~> action_state_get
2862 - Change model methods into functions:
2863 (model)->common_public->action_use ~> surf_action_ref
2865 * Implement a generic resource; use it as ancestor to specific ones
2866 (allows to kill duplicated code in models)
2867 Drawback: timer command don't need no name nor properties;
2868 workstation_CLM03 don't need no properties
2869 (but I guess we can live with those few bytes wasted)
2871 * Improve the action object model
2872 - implement a constructor avoiding dupplicated code about field
2873 initialization in generic_action part.
2875 * Kill the SDP model: it has an external dependency, is deprecated
2876 in flavor of modern lmm models, and didn't compile since a while
2879 * Relocation of the context module from XBT to SIMIX.
2880 (the context were decoupled from the simix processes, duplicating a lot of code)
2881 => a lot of code was factorized
2882 - less overhead is introduced during scheduling
2883 - simpler API for the context factory
2884 - the logic for process creation,destruction and manipulation was simplified
2885 * Simplification of the s_smx_process_t data structure.
2886 => accesing the simix level data associated to a process is faster now,
2887 and the code is a lot more readable.
2890 * Implement some more MPI primitives:
2891 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
2892 -implementation: Bcast: flat or 2-ary tree (default),
2893 Barrier: 4-ary tree,
2895 Allreduce: Reduce then Bcast
2896 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
2897 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
2898 Alltoallv: flat tree, like ompi
2900 * Add support for optimized collectives (Bcast is now binomial by default)
2901 * Port smpirun and smpicc to OS X
2904 * Kill SD_link_get_properties: hard to maintain and makes very little sense
2905 Shout out if you used it.
2908 * Display the list of still queued messages in SG mode when existing
2912 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
2913 * Add xbt_graph_node_get_outedges() [Silas De Munck]
2914 * Add xbt_str_from_file(FILE*)
2915 * Add xbt_dict_get_key achieving a linear reverse search
2916 * Remove the context module
2918 Portability report of this version:
2919 * Main portability targets:
2920 - Linux(debian)/x86/context
2921 - Linux(debian)/x86/pthreads
2922 - Linux(debian)/amd64/context
2923 - Linux(debian)/amd64/pthreads
2924 On these, we still have the eratic breakages of gras/pmm and
2925 amok/saturate_sg reported in previous version. We still think
2926 that the tests are the cause of the fault, not the tested code.
2928 - Mac OSX Leopard/x86/context
2929 Still false negative in tesh autotesting.
2930 Smpi still fails, but this time because readlink does not accept -f
2931 Everything seems to work properly beside of that.
2934 - AIX version 5.3 (only tested contexts this time)
2935 Smpi still fails there because mktemp is not installed.
2936 Everything seems to work properly beside of that.
2938 I managed to compile it for the first time, but several breakages.
2939 Won't delay the release for this exotic platform.
2941 * Windows: it's still lagging behind. If you want to help, please
2944 Timing report of this version:
2945 This version seem to be more than 5% faster than 3.3.1 (on linux
2946 64bits with contextes). The gain is less than expected, we are
2947 investigating this for next release.
2949 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
2951 SimGrid (3.3.1) stable; urgency=low
2954 * Implement a --cfg-help to show existing configuration variables
2955 * Build chain do not require doxygen in maintainer mode
2958 * fix a bug on struct sizeof computation, which prevented the
2959 exchange of arrays of structs in some conditions
2960 - added a regression test about this in datadesc_usage
2961 * Allow the exchange of 0-long dynamic vectors.
2962 - for that, use -1 as indicator of dynamic size instead of 0
2963 - This implied to change any size from unsigned long to long,
2964 reducing a bit communication abilities, but I guess that with
2965 64bits being quite common, this is more than enough.
2966 - This also induce a protocol change, thus bumping network protocol
2967 version from 0 to 1 (if we have external users, we have to get
2968 clean on that point too ;)
2969 - added two regression tests about this in datadesc_usage
2970 * Be more verbose when propagating local exceptions
2971 This helps debugging.
2972 * Display the status of simulated processes when receiving SIGINT in
2976 * Allow to control the simulation from a trace file.
2977 New functions MSG_action_register() and MSG_action_trace_run()
2978 The first one allows to associate a function execution to each
2979 kind of action while the second one parses a trace file and
2980 triggers the corresponding actions within the system.
2981 For now, only a toy example is provided in examples/msg/actions
2982 * Add an example of process migration in examples/msg/migration
2983 * Fix a bug in task exchange which broke MSG_task_get_sender()
2984 Add a teshsuite regression test for that.
2985 [Bug: if MSG_task_get_sender() is called after sender exit,
2987 * Fix a bug which prevented suspend/resume to work properly
2988 * Display the status of simulated processes when receiving SIGINT
2989 This fixes a regression of v3.3. due to the introduction of SIMIX
2990 * Bug fixing in failure management:
2991 - trace could not start by a failure at time 0
2992 - failure during communications were not working
2995 * Add SIMIX_process_set_name() to change the name of the current
2996 process in the log messages.
2997 * Store smx_hosts in a dict since we only retrieve them by name
2998 * Move the configuration infrastructure to surf
3001 * Move the configuration infrastructure to surf
3004 * Massive internal cleanups:
3005 - Store internal structures on processes instead of hosts (allows
3006 to have more than one process per host, in addition of being more
3008 - Cleanup the initialization/finalization process
3009 - Kill a whole bunch of unneeded synchronization:
3010 processes run in exclusive manner within the simulator
3011 - Move queues from global tables to process data fields
3013 - now accept -platform and -hostfile arguments
3014 - Pass the right rank value to processes according to the hostfile
3015 * Compile the examples by default, and use them as regression tests
3016 * Implement MPI_Wtime()
3017 * Change the reference speed to a command line option
3020 * TCP_gamma can now be specified as command line option using
3021 --cfg=TCP_gamma:10000000.0
3022 * Change the --surf-path cmd line option into --cfg=path:
3025 * Also include strbuff from xbt.h public header
3026 * xbt_ex_display(): do not free the exception after displaying
3027 This allows to do more with the given exception afterward.
3028 Users should call xbt_ex_free() themselves.
3032 Portability report of this version:
3033 * Main portability targets:
3034 - Linux(debian)/x86/context
3035 - Linux(debian)/x86/pthreads
3036 - Linux(debian)/amd64/context
3037 - Linux(debian)/amd64/pthreads
3038 These targets fail about 1/10 of times on gras/pmm, but we believe
3039 that this is because of the test, not because of simgrid.
3040 amok/saturate_sg fails even more rarely, and the test may not be
3043 - Mac OSX Leopard/x86/context
3044 The test suite still spits tons of errors because some obscure
3045 force prevents us from removing the temporary directories
3046 arguing that they still contain some metadata I've never heard of.
3047 Smpi fails because seq is not installed.
3048 Everything seems to work properly beside of that.
3051 - AIX version 5.3 (both contexts and pthread)
3052 Smpi still fails there because mktemp is not installed.
3053 XML inclusions seems rosty on AIX.
3055 * Windows: it's still lagging behind. If you want to help, please
3058 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
3060 SimGrid (3.3) stable; urgency=high
3064 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
3065 [Malek Cherier & Mt]
3067 * Introduce the SIMIX module: factorize code between MSG and GRAS.
3070 Until now, GRAS were using MSG as an interface to SURF. It was
3071 quite difficult because both interface have several differences
3072 (MSG channels vs GRAS sockets were the most notable point).
3074 This also opens the gate to SMPI (which should occur soon) and speed
3075 up simulations by to 40% (even if it were not the main goal).
3077 **************************************
3078 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
3079 **************************************
3080 The point is that events occurring at the exact same timestamp are
3081 not scheduled in the same order with the old and new version. This
3082 may be enough to completely change the execution of simulations in
3083 some cases. Sorry for the inconvenience.
3085 * Cleanup and upgrade the XML format to push further scalability
3086 issues (check http://hal.inria.fr/inria-00256883/ for more info)
3088 * Improve the testing infrastructure with tesh. Now a very large part of
3089 the code is tested not only by being run but also by checking that the
3090 output match an expected output [Mt].
3092 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
3093 is really less memory-demanding, which should allow you to use
3094 larger files in SimGrid [AL].
3096 * Inform valgrind about our contextes, so that it becomes usable
3097 with the default (and more effecient) version of SimGrid
3098 [contributed by Sékou Diakite, many thanks]
3101 * Introduce a listener thread in charge of receiving incoming
3102 messages from the network. It allows to overlap communication and
3103 computation but most notably, it removes some stupid deadlocks due
3104 to the fact that so far, a process could not send and receive at
3105 the same time. This made most non trivial communication schema
3107 * Convert the PIDs from long int to int to match the MSG ones (and
3108 linux ones too) [Mt]
3109 * New function: gras_agent_spawn() to launch a new process on
3110 current host. Only working in simulation for now. [Mt]
3111 * New function: gras_os_hostport() returning a constant form (ie,
3112 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
3115 * Make the backtrace of exceptions more human readable [Mt]
3116 * New module: xbt/str [Mt]
3117 a ton of string utility functions (split, join, printf to a newly
3118 allocated buffer, trim, etc)
3119 * New module: xbt/hash [Mt]
3120 SHA1 hashing algorithm (more to come if needed)
3121 * New module: xbt/synchro [Mt]
3122 synchronization tools (mutex and conditions) working the same way
3123 in simulation and in real life (mainly useful for GRAS, but not
3125 * New module: xbt/queue [Mt]
3126 classical producer/consumer synchronization scheme
3127 * xbt_dynar_new_sync() creates a synchronized dynar. All access
3128 (using the classical functions will get serialized) [Mt]
3129 * Make dictionary internal table dynamic. No need to specify its size
3130 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
3132 * Make sure the log channels are organized as a tree under windows
3133 (because of ANSI C compatibility issue, any channel were child of
3134 root directly) [Mt].
3137 * Cleaned many thing in surf and fixed a few bugs [AL].
3138 * Add a nice command line configuration mechanism to compose models [AL].
3139 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
3140 the previous one (KCCFLN05). It relies on something that looks like
3141 a max-min sharing mechanism but cannot be written as such. A new solver
3142 was thus designed [AL].
3143 * Add a new solver to lmm. Based on Lagrange optimization and
3144 gradient-based descent, it enables to efficiently maximise systems s.a
3146 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
3148 This solver enables to propose two new network models for TCP Reno and
3149 TCP Vegas based on Low's work. These models still need to be fully
3150 tested though [Pedro Velho].
3153 * Bug fix in SD_simulate. Now the time bound given as argument is
3155 * Use the new parallel task model (ptask_L07) as default.
3156 * Use the SURF command line configuration mechanism.
3157 * 0-size tasks (for synchronization) should now work.
3159 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
3161 SimGrid (3.2) stable; urgency=high
3165 We still experience issues on this platform, but we believe that at
3166 least MSG is usable.
3168 GRAS API BREAKAGE (for simplification purpose, sorry):
3169 * the gras_msgtype_by_name is not used anymore. Instead of
3170 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
3171 you can write (and must)
3172 gras_msg_send(toserver, "request", &request);
3173 - If you still want to pass a gras_msgtype_t to the function (to cache
3174 the type and avoid the lookup time), use the gras_msg_send_() variant.
3175 - Impacted functions:
3176 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
3177 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
3178 * The callbacks are now expected to return 0 when everything went well
3179 (just like the main() function)
3181 GRAS new features and improvements:
3182 * New module mechanism where user code can use per process globals [Mt]
3183 This is similar to gras_userdata_*() functions, but for libraries. It
3184 factorize some code developped over and over in the examples and AMOK.
3185 It has still to be documented and used (only amok/peermanagement is
3187 * Fix a vicious bug in the TCP buffering mechanism which leaded to message
3188 loss when they were small enough to fit into the buffer and sent quickly
3189 enough so that they can all get received in one shoot.
3190 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
3191 if not found. Use the *_or_null() variant for the old semantic.
3192 * In gras_msg_handle, do not discard messages without callback.
3193 They are probably messages to be explicitly awaited later (ie, proofs of
3194 mis-synchronization in userland since they are sent before being awaited)
3195 No big deal usually.
3196 * gras_socket_meas_send/recv: semantic changed!
3197 The numerical arguments used to be (1) the total amount of data to send
3198 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
3199 messages. This was need for the fool willing to send more than MAXINT
3200 bytes on quite fat pipes.
3203 * Do really rename the hostmanagement module to peermanagement. [Mt]
3204 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
3205 but this is rather new and this was documented in the module
3206 documentation (poor excuses, I admit)
3207 * Bandwidth measurement semantic changed! This follows the changes to
3208 gras_socket_meas_send/recv explained above.
3211 * A sequential mode has been added to the workstations. When a workstation
3212 is in sequential mode, it can execute only one task, and the other tasks
3213 are waiting in a FIFO. [Christophe Thiery]
3216 * The KCCFLN05 workstation model now handles parallel tasks. It is the
3217 model for SIMDAG. [Christophe Thiery]
3218 * Bug fix in the maxmin solver: Some values were close to 0 instead of
3219 equal to 0, which caused some bad behaviors in
3220 saturated_constraint_set_update. I now use a threshold mechanism like in
3224 * When running manually src/testall, you select specific units [Mt]
3225 testall is the result of our cunit mechanism, and should replace all
3226 the scripty thingy around since bash don't run easily on billware.
3228 * A mallocator system has been added. [Christophe Thiery]
3229 Mallocators allow you to recycle your unused objects instead of freeing them
3230 and allocating new ones.
3232 Documentation update:
3233 * FAQ reworking + New FAQs:
3234 - "Valgrind spits tons of errors!" [Mt]
3235 - "How to repport bugs" [Mt]
3236 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
3237 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
3238 - Communication time measurement within MSG [AL]
3239 - I experience weird communication times when I change the latency [AL]
3240 * GRAS tutorial [Mt]
3242 - an introduction to the framework and to the used communication model
3243 - an initiatic tour introducing the most proheminent features:
3245 . Lesson 0: Installing GRAS
3246 . Lesson 1: Setting up your own project
3247 o Part 2: Message passing
3248 . Lesson 2: Exchanging simple messages
3249 . Lesson 3: Passing arguments to the processes (in SG)
3250 . Lesson 4: Attaching callbacks to messages
3251 . Lesson 5: Using globals in processes
3252 . Lesson 6: Logging information properly
3253 . Lesson 7: Using internal timers
3254 . Lesson 8: Handling errors through exceptions
3255 . Lesson 9: Exchanging simple data
3256 . Lesson 10: Remote Procedure Calling (RPC)
3257 . Lesson 11: Explicitly waiting for messages
3258 . Recapping of message passing features in GRAS
3259 - A HOWTO section containing:
3260 o HOWTO design a GRAS application
3261 More are due, of course. They will come latter. In the meanwhile, you can
3262 check the examples which are still here.
3264 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
3266 SimGrid (3.1) stable; urgency=high
3270 There was a stack corruption somewhere, visible only when optimizing
3271 with these versions. [Vince]
3274 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
3275 module that enabled to play with Directed Acyclic Graphs. It is built
3276 directly on top of SURF and provides an API rather close to the old
3277 SG. Some old codes using SG are currently under rewrite to check that
3278 all needful functions are provided. [Christophe Thiery]
3281 * Complete rewrite of the KCCFLN05 workstation model. It is now an
3282 extension of the classical CLM03 model that gracefully handles
3283 failures. This is now the default model for MSG and GRAS. It doesn't
3284 handle parallel tasks yet though. [AL]
3285 * Bug fix: Weights were not correctly set in the network part.
3286 WARNING: This may have resulted in incorrect results with simulations
3287 where there are more than one flow on a given link. [AL]
3290 * After a (long ?) discussion on simgrid-devel, we have decided that the
3291 convention we had on units was stupid. That is why it has been decided
3292 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
3293 WARNING: This means that all previous platform files will not work as
3294 such with this version! A warning is issued to ask users to update
3296 A conversion script can be found in the contrib module of the CVS, under
3297 the name contrib/platform_generation/surfxml_update.pl [MQ]
3300 * Bug fix: Processes were started in reverse order, wrt deployment file.
3301 WARNING: if your code relies on this bug, please fix it. [AL]
3302 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
3303 being executed on two different locations. [AL]
3304 * Bug fix: Failures are now better supported thanks to Derrick's tests
3305 (there was many failure situations I hadn't thought of and that weren't
3306 correctly handled). [AL]
3307 * New function: MSG_host_is_avail indicates you whether a given m_host_t
3311 * New! a real RPC mechanism, as it ought to be since too long. [MQ]
3312 Exception occurring on server-side are propagated back to client (!).
3314 API CHANGE: the callback changed their prototype. Change:
3315 int my_handler(gras_socket_t expeditor, void *payload_data) {
3317 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
3318 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
3320 * New! function: gras_msg_handleall to deal with all messages arriving
3321 within a given period.
3322 * New! function: gras_socket_server_range to get a server socket in a
3323 range of port numbers (ease to avoid port number conflicts) [MQ]
3324 * New! gras processes display their backtrace when they get a SIGUSR1
3325 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
3326 Sweet to debug RL processes [MQ]
3330 - Do not force experiment sizes to be expressed in kb, or it becomes
3331 impossible to measure the latency this way (needs one byte-long tests)
3332 WARNING: this changes the amok_bw_* function semantic. [MQ]
3333 - Implements the link saturation stuff. [MQ]
3334 * Peer management module:
3335 New! module factorizing code that we wrote over and over [MQ].
3338 * New module: cunit (my jUnit implementation in ansi C) [MQ]
3339 - Test units are placed directly into the library code, they get extracted
3340 automatically and placed into the src/testall binary.
3341 - Convert most of the XBT tests to this system.
3342 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
3343 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
3344 live in the same C code. This required to change a little bit the API
3345 of surfxml parsing but shouldn't be an issue for end-users. [AL]
3346 * New module: sparse graph structure with basic algorithms (this is work
3347 in progress and the API is not considered to be frozen yet). [AL]
3348 * Display more information on backtraces: source line & function names are
3349 now displayed just like valgrind does (rely on addr2line tool) [MQ]
3350 * New function: xbt_backtrace_display(). Sweet while debugging [MQ]
3351 * Reworked a little bit some #include statements to load only required
3352 headers. Some user code that relied on SimGrid to include stdlib or
3353 stdio may need to include it by themselves. [AL]
3354 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
3356 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
3357 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
3358 but I guess that almost nobody used those parts. [MQ]
3360 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
3362 SimGrid (3.0.1) stable; urgency=low
3365 * Unfortunately, I had missed 5 misnamed functions:
3366 xbt_fifo_item_t xbt_fifo_newitem(void);
3367 void xbt_fifo_freeitem(xbt_fifo_item_t);
3368 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
3369 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
3370 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
3371 They're now deprecated. Please use their new versions:
3372 xbt_fifo_item_t xbt_fifo_new_item(void);
3373 void xbt_fifo_free_item(xbt_fifo_item_t);
3374 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
3375 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
3376 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
3378 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
3379 * Documentation: xbt_log module unmercifully reworked [MQ]
3380 * Bugfix: there was a problem with the ending of contexts with
3381 the pthread backend. It caused some weird deadlock or behavior
3382 depending on the pthread implementation. [AL]
3383 * Bugfix: get the exceptions raised in the simulator repport where
3384 and why they come from when they are not caught in time [AL, MQ]
3387 * Bugfix: Do repport the error when two non-connected hosts try to
3388 exchange data (Thanks to Flavien for stumbling into this one) [AL]
3391 * Add additionnal checkings on communications. Assert that two
3392 communicating hosts are connected by a set of links... [AL]
3395 * Add additionnal checkings on channel values in communication [AL]
3396 * New: MSG_task_get_source to see on which host a task was generated [HC]
3397 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
3398 the number of tasks waiting to be received on channel and sent
3400 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
3401 waits for the first task coming from a given host.. [AL]
3403 GRAS new functionnalities: [MQ]
3404 * Enhance the parsing macro to allow the size of multidimentional objects
3405 to be given thru annotations.
3406 * New example (and documentation): Matrix Multiplication a la RPC
3407 (as when I was young!) and fix a bunch of bugs found on the way.
3409 GRAS performance improvements: [MQ]
3411 * Reduce the amount of cbps creation/destruction by making it static to
3412 datadesc_send/recv() and using a (newly created) cbps_reset (based on
3415 * Change libdata to a set so that we can search for stuff by ID (and thus
3416 reduce the insane amount of dict lookups)
3419 * Actually implement gras_datadesc_copy() so that we don't have to mimick
3420 RL communication on top of SG since it's so uneffective.
3421 It may also be used for inter-thread communication in RL, one day.
3422 * Use gras_datadesc_copy() to exchange messages on top of SG
3424 - improve message exchange performance on top of SG
3425 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
3426 * Don't exchange on the network the size of the used part of buffer,
3427 instead, specify the possible buffer size to read().
3429 - reduces the amount of read/write calls (one pair per exchange)
3430 - reduces the amount of exchanged data (the size)
3431 - allows to retrieve all arrived data on receiver side, if we don't need
3432 it right now (subsequent read will peek the buffer)
3433 - allows the receiver to proceed with the beginning of the stream before
3434 everything is arrived
3435 - make it possible to build an iov transport (using readv/writev)
3437 - take care of the data with non-stable storage (like stacked data),
3439 * If possible, TCP send uses vector I/O (when writev() is here)
3440 - Don't use it for receive since we send data sizes and data on the
3441 same stream, so we wouldn't be able to chain large amount of chunks
3442 before having to flush the stuff to read the size.
3443 * Rework the transport plugin mechanism to simplify it and reduce the
3444 amount of pointer dereferencement when searching for the right function
3447 * I guess that now, we do almost as few system calls as possible while
3448 doing as few data copy as possible.
3450 To improve it further, we could try to send all the sizes first and then
3451 all the data (to use iov on receiving size), but it's only a partial
3452 solution: when you have 2 dimensional data, the sizes of the second
3453 dimension is data of the first dimension, so you need 3 streams.
3455 I'm not sure the potential performance gains justify the coding burden.
3457 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
3459 SimGrid (3.00) stable; urgency=high
3462 * New! Give the possibility to hijack the surf parser and thus bypass
3463 MSG_create_environment and MSG_launch_application. Have a look at
3464 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
3466 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
3468 SimGrid (2.96) unstable; urgency=low
3473 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
3474 This deprecates the xbt_error_t mechanisms.
3475 It modifies (simplifies) all XBT and GRAS API.
3476 MSG API keeps unchanged (exceptions raised by XBT are caught from
3477 within MSG and masked with existing error handling facilities)
3480 * New! Add a FATPIPE model. [AL]
3481 * New! Add a parallel task model. [AL]
3482 * New! Add automatically a loopback interface (in the default
3483 network model) if none was precised.
3486 * Bugfix: MSG_process_resume now works with the current running process.
3488 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
3489 * Modification of MSG_task_get_compute_duration. Once a task has been
3490 processed, the value returned by this function is now equal to 0. [AL]
3491 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
3492 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
3493 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
3494 of a m_task. For now, MSG_task_cancel only works with computation
3496 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
3497 of the processor (in Mflop/s) regardless of the current load on the
3499 * API Change: use proper naming convention for MSG_getClock and
3500 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
3502 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
3503 This function changes the priority of a computation task. This priority
3504 doesn't affect the transfer rate. A priority of 2 will make a task
3505 receive two times more cpu power than the other ones. This function
3506 has been added to suit the needs of Nguyen The Loc and hasn't been that
3507 much tested yet. So if it fails, please report it and send me your code.
3509 * API Change: removed all functions and types that were marked "deprecated"
3510 since many months. Renamed MSG_global_init_args to MSG_global_init.
3512 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
3514 SimGrid (2.95) unstable; urgency=low
3517 * Steal some nice code to GNU pth to fix context detection and usage [AL]
3518 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
3519 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
3522 * Bugfix: Allow absolute paths for platform description files [MQ]
3523 * Bugfix: do free the variables after use. Leads to drastic performance
3525 * Implement max_duration (ie, timeouts) on resources [AL]
3528 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
3530 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
3531 the needed support (timeouts) [AL]
3534 * Implement measurement sockets. You can now get the bandwidth between two
3535 hosts thanks to AMOK (see below). [MQ]
3536 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
3537 dynar over the network (yeah) [MQ]
3538 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
3539 * simple/static token-ring example. [Alexandre Colucci and MQ]
3540 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
3541 in place before [MQ]
3544 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
3545 type parsing. "short" and "long" modifiers were also ignored; other
3546 modifier (such as reference level) are still ignored. [MQ]
3547 * Embeed the buffer size within the buffer itself on SG. [MQ]
3548 That way, send() are atomic and cannot get intermixed anymore (at least
3549 the ones which are less than 100k; bigger messages still have the issue)
3550 * Array size pushed by the field, not by the field type (or each
3551 and every long int will push stuff to the cbps) [MQ]
3552 * use select() to sleep since it allows to portably sleep less than one
3555 GRAS (minor cleanups)
3556 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
3559 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
3560 * type category 'ignored' killed as it was never used and were difficult
3562 * whether a type can cycle or not is now a flag, leaving room for more
3563 flags (as "ignored", if we feel the need one day ;)
3564 * Rename raw sockets to measurement sockets since "raw" has another
3565 meaning in networking community.
3568 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
3569 and offers features not belonging to GRAS but that most applications
3570 need. One day, it may be a set of plugins loadable at runtime.
3571 * New module: bandwidth
3572 bandwidth measurement between arbitrary nodes running this module. [MQ]
3574 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
3576 SimGrid (2.94) unstable; urgency=low
3578 The first beta release of SimGrid 3 !
3582 * Update the main page and the FAQ. Adding references to gforge.
3585 * Add a gras_os_getpid function.
3588 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
3589 * Extend the logs so that they also print PID, hostname, date, ... if
3591 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
3592 and kill the old version which were in testsuite/
3593 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
3597 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
3598 for users. Instead, each programming environment (GRAS, MSG,...) use it
3599 when needed to provide such a feature to users.
3600 Don't shortcut the mechanism or you will also shortcut the virtualization
3601 you need on the simulator.
3605 * Cleanups in configury with regard to compile optimization/warning flags.
3606 Also add -fno-loop-optimize to any powerpc since it's the optimization
3607 killing gcc (< 3.4.0).
3608 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
3609 needed by MSG examples complications
3610 * Borrow configury beautifications from PHP
3613 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
3614 warning (thanks loris for stumbling into this one).
3615 * Bugfix: stop loading private headers (gras_config.h) from the public
3619 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
3620 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
3621 RL would imply a DNS resolver, which is *hard* to do in a portable way
3622 (and therefore delayed).
3623 * Implement a real timer mechanism and use it in timing macros. This allows
3624 to avoid rounding errors and get a 0.000005 sec precision in timing
3625 macros. While I was at it, various cleanups:
3626 - allow to declare more than one timed section per file (fix a stupid bug)
3627 - move some private declaration to the right place
3628 - merge conditional execution and timing macros into emulation module
3629 - document the module
3630 - make sure the module cleanups its mess on gras_exit
3631 * Documentation improvements:
3632 - (new) how to compile applications using GRAS
3633 - (new) emulation support (timing macros)
3635 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
3637 SimGrid (2.93) unstable; urgency=low
3639 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
3642 - Use Paje properly where used. Still to be sanitized properly.
3643 - Portability fix: Add an implementation of the contexts using pthread
3647 - Add xbt_procname(): returns the name of the current process.
3648 Use it to show the current process's name in all logging.
3650 - fix detection of older flex version and the reaction, since we do
3651 depend on modern ones (we use lex_destroy)
3652 - Better separation of SG and RL in the libs: remove all simulation code
3653 from libgras. As a result, this lib is now only 200k when stripped.
3654 Some of the xbt modules may also be duplicated (two sets and such) and
3655 should be cleaned/killed before SG3.
3656 - Insist on using xlC on AIX because of weird problems involving gcc there.
3657 - Cleanup the make remote stuff. This is now done by scripts
3658 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
3659 mainly for our private use, but we're working on changing them to user
3662 - Bugfix: flush the socket on close only if there is some *output*.
3663 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
3665 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
3668 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
3670 SimGrid (2.92) unstable; urgency=low
3672 Alpha 3 on the path to SimGrid 3
3676 - New! First try of benchmarking macros.
3677 - New! First try so that gras_stub_generator generate deployment and
3678 remote compilation helpers.
3680 - Bugfix: Initialization fix in msg_test.
3684 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
3686 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
3688 - API Change: gras_os_sleep to take the amount of seconds as a double.
3689 Accepting an int was error prone since it was the only location where
3690 seconds were coded as such. It leaded to damn rounding errors.
3691 - Bugfix: Hard to belive that timers ever worked before this.
3693 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
3695 SimGrid (2.91) unstable; urgency=low
3697 Alpha 2 on the path to SimGrid 3
3701 - Bug fix in the lmm_solver.
3703 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
3704 through the function MSG_paje_output.
3705 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
3706 - It is possible to bound the rate of a communication in MSG with
3707 MSG_task_put_bounded() (was already in the previous version but I had forgotten
3708 to write it in the changelog).
3709 - Bug fix to let GRAS run on top of MSG until we move it directly on top
3714 - Various cleanups to the autotools stuff
3715 - Begin to move Gras examples to examples/gras/
3716 - Let make distcheck work again (yeah!)
3718 - documentation overhauled using doxygen.
3719 gtk-doc-tools is dead in SimGrid now.
3720 - Automatically extract all existing logging categories, and add the list
3721 to the documentation (long standing one, to say the less)
3723 - Cleanup the known architecture table. Reorder the entries to group what
3724 should be, and use a more consistent naming scheme.
3725 (some of the test dataset are still to be regenerated)
3726 - New! Allow library to register globals on each process just as userdata
3728 This is implemented using a xbt_dict and not a xbt_set, so we loose the
3729 lookup time (for now).
3730 Use it in msg and trp.
3731 This cleans a lot the internals and helps enforcing privacy of the
3732 headers between the gras components.
3733 - New! Add a timer mechanism, not unlike cron(8) and at(1).
3734 - Bugfix: gras_os_time was delirious in RL.
3735 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
3737 - Reenable GRAS now that it works.
3739 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
3741 SimGrid (2.90) unstable; urgency=low
3743 Alpha 1 on the path to SimGrid 3
3745 * It is a long time since the last release of SimGrid. I'm sorry about
3746 that but as I had told you, I was rewriting a lot of things. I apologize
3747 to those who had been reporting bugs to me and that I had not answered.
3748 If your bug is still in the new version, please tell me. Here is a
3749 summary of the main changes.
3751 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
3752 lead by Martin Quinson. As a consequence SimGrid gains a lot in
3753 portability, speed, and a lot more but you'll figure it out later.
3754 SimGrid now comprises 3 different projects: MSG, GRAS and SMPI.
3755 I wanted to release the new MSG as soon as possible and I have
3756 broken GRAS, which is the reason why, for now, only MSG is fully
3757 functional. A laconic description of these projects is available
3758 in the documentation.
3760 * REVOLUTION 2: I have removed SG and I am now using a new simulation
3761 kernel optimized for our needs (called SURF but only the developers
3762 should use it). Hence, MSG is now roughly 30 times faster and I think
3763 that by rewriting a little bit MSG, I could event speed it up a little
3764 bit more. Beside the gain in speed, it is also much easier to encode a
3765 new platform model with SURF than it was with SG. More to come...
3767 * REVOLUTION 3: I have tried to change a little as possible the API of
3768 MSG but a few things really had to disappear. The main differences
3769 with the previous version are:
3770 1) no more m_links_t and the corresponding functions. Platforms are
3771 directly read from a XML description and cannot be hard-coded
3772 anymore. The same format is used for application deployment
3773 description. The new format is described in the documentation.
3774 Have a look in tools/platform_generation. There is a tiny script
3775 that converts from the old platform format to the new one. Concerning
3776 the application deployment format, parsing the old one is tricky.
3777 I think most of you should however be able to convert your files. If
3778 it is really an issue, I can write a C code that does the conversion.
3780 2) the toolbox tbx does not exist anymore. We now have a library
3781 with much more data-structures but without the hash-tables (we have
3782 dictionaries that are much faster).
3784 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
3786 *****************************************************************************
3787 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
3788 * don't feel like converting the oldies. (Mt) *
3789 *****************************************************************************
3792 Version 2.90: "the long awaited one"
3793 - Finished rewriting and debugging MSG. Rewrote the documentation.
3794 - disable GRAS for now since it needs to be ported to the newest SG
3797 - Finish the port to windows (using mingw32 for cross-compile)
3800 - Main loop and datastructures of SURF. A cpu resource object is
3801 functional. Surf can thus be used to create cpu's with variable
3802 performance on which you can execute some actions.
3804 2004-11-15 Martin Quinson
3805 - Port to ARM. Simply added the alignment and size descriptions. Should
3806 work, but the ARM machines are so slow that I didn't had the opportunity
3807 to 'make check' over there yet.
3809 2004-11-15 Arnaud Legrand
3810 - Trace manager now written. It uses a heap structure and is therefore
3811 expected to be efficient. It may however be speeded up (particularly
3812 when many events occur at the same date) by using red and black
3813 trees. One day maybe...
3814 - Max-min linear system solver written. It uses a sparse matrix
3815 structure taking advantage of its expected use. Most operations are
3816 O(1) and free/calloc are called as few as possible. The computation of
3817 the minimum could however be improved by using a red and black tree
3820 2004-11-03 Arnaud Legrand
3821 - Rename every gras_* function that was in xbt/ to its xbt_
3823 - Add a heap and a doubly-linked list to xbt
3824 - Added a dichotomy to the dictionaries. make check works as well before
3825 so I assume that the patch is correct. I do not know however if things
3826 run effectively faster than before now. :)
3828 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
3829 SimGrid, and the version number is bumped to 2.x
3831 2004-10-29 Martin Quinson
3832 - Introduction of the remote errors.
3833 They are the result of a RMI/RPC on the remote machine.
3834 ErrCodes being scalar values, you can't get the host on which those
3835 errors did happen. Extending the error mechanism as in Gnome is possible.
3836 No idea yet whether it is a good idea.
3838 2004-10-28 Martin Quinson
3839 - Interface revolution: the Starred Structure Eradication.
3840 I used to do typedef struct {} toto_t; and then handle *toto_t.
3841 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
3842 - ???_t is a valid type (builded with typedef)
3843 - s_toto_t is a structure (access to fields with .)
3844 - s_toto is a structure needing 'struct' keyword to be used
3845 - e_toto_t is an enum
3846 - toto_t is an 'object' (struct*)
3848 typedef struct s_toto {} s_toto_t, *toto_t;
3849 typedef enum {} e_toto_t;
3850 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
3851 s_toto_t) is private.
3853 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
3854 so that it can set the variable to NULL. It was so for dicts and sets,
3855 it changed for dynars.
3857 - Fix a bunch of memleaks in dict_remove
3858 - Fix a bug in sg/server_socket opening: it failed all the time.
3860 2004-10-07 Martin Quinson
3861 - Speed up dynar lookup operation a bit.
3863 gras_dynar_get is dead.
3865 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
3866 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
3867 (which gives you the address of the stored data).
3869 gras_dynar_get_as is an helpful macro which allows you to retrieve a
3870 copy of the data using an affectation to do the job and not a memcpy.
3872 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
3873 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
3875 It does not really speedup the dynar test because they are
3876 setting elements all the time (and look them seldom). But the dict does
3877 far more lookup than setting.
3879 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
3881 2004-10-05 Martin Quinson
3882 - Allow to (en/dis)able the cycle detection at run time.
3884 Whether we should check for cycle or not is now a property of each
3885 datatype. When you think there may be some cycle, use datadesc_cycle_set.
3886 datadesc_cycle_unset allow to remove this property when previously set.
3888 Note that the cycle detection is off by default since it impacts the
3889 performance. Watch the data you feed GRAS with ;)
3891 This property is hereditary. Any element embedded in a structure having it
3892 set have it set for the time of this data exchange.
3894 You should set it both on sender and receiver side. If you don't set it on
3895 sender side, it will enter an endless loop. If you forget on receiver
3896 side, the cycles won't be recreated after communication.
3898 - Header reorganization.
3899 Kill gras_private.h, each submodule must load the headers it needs.
3901 2004-10-04 Martin Quinson
3902 - Interface revolution: do not try to survive to malloc failure.
3904 Now, gras_malloc and friends call gras_abort() on failure.
3905 As a conclusion, malloc_error is not a valid error anymore, and all
3906 functions for which it was the only gras_error_t return value are
3907 changed. They now return void, or there result directly.
3908 This simplify the API a lot.
3910 2004-09-29 Martin Quinson
3911 - Re-enable raw sockets.
3912 Created by gras_socket_{client,server}_ext;
3913 Used with gras_raw_{send,recv}
3916 It should allow to kill the last bits of gras first version soon.
3918 This is not completely satisfactory yet (duplicate code with
3919 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
3922 - Simplify transport plugin (internal) interface by not passing any
3923 argument to _server and _client, but embedding them in the socket
3926 2004-09-28 Martin Quinson
3927 - Finish the port to AIX.
3928 autoconf was my problem (segfault within the malloc replacement
3929 function. No idea why)
3931 2004-09-16 Martin Quinson
3932 - Fix some size_t madness on 64bit architectures.
3934 2004-09-08 Martin Quinson
3935 - Reduce the number of system headers loaded, overload some more system
3936 calls (such as malloc to cast the result of the system one, and work
3938 - Fix and reintroduce the config support
3940 2004-09-07 Martin Quinson
3941 - Source code reorganization to allow Arnaud to surf all over there.
3942 - Allow to document the logging categories.
3943 - Remove all uppercase from logging categories and useless cleanup in names.
3945 2004-08-18 Martin Quinson
3946 Version 0.6.2 (protocol not changed; API changed)
3947 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
3948 gras_error_t), and NULL when not found. Functions expecting a msgtype
3949 as argument (msg_wait; msg_send) deal with NULL argument by providing a
3950 hopefully usefull message.
3951 - Portability to prehistoric sparcs again
3953 2004-08-17 Martin Quinson
3954 Version 0.6.1 (protocol not changed; ABI not changed)
3955 - prealloc some buffers to speed things up
3957 2004-08-11 Martin Quinson
3958 Version 0.6 (protocol not changed; ABI expended)
3959 - The parsing macro can deal with the references, provided that you add
3960 the relevant annotations (using GRAS_ANNOTE(size,field_name))
3962 2004-08-09 Martin Quinson
3963 Version 0.5 (protocol not changed; ABI changed)
3964 - Allow to off turn the cycle detection code in data exchange at
3965 compilation time. It should be at run time, but I'm short of time (and
3966 the config stuff is still broken). That way, we keep dict out of the
3967 critical path, which is good because the performance is poor:
3968 - search not dichotomial yet
3969 - dynar give no way to access their content and memcpy everytime
3970 - In composed data description (struct, ref and so on), stop foolness of
3971 keeping the subtype's ID, but store the type itself. This keeps sets out
3972 of the critical path, which is good since they rely on dynar and
3973 dictionaries. The only loose of that is that we cannot detect the
3974 redeclaration of a structure/union with another content (but I'm not sure
3975 the code detected well this error before anyway). We still can detect
3976 the redefinition discrepancy for the other types.
3977 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
3978 it breaks the code because of type-punning used all over the place).
3979 This breaks on all non-gcc architectures (for now).
3981 All those changes (plus the buffer of last time) allow me to gain 2 order
3982 of magnitude on cruel tests consisting of 800000 array of integers on two
3983 level of a hierarchical structure (200 secondes -> 4 secondes)
3986 - the selector of reference must now return the type it points to, not
3987 the ID of this type.
3989 2004-08-06 Martin Quinson
3990 Version 0.4 (protocol changed; ABI not changed)
3991 - Allow to pass --gras-log argument to processes in simulation mode. Really.
3992 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
3993 - Implement a buffer transport, and use it by default (it relies on tcp in
3994 real life and on sg in simulation).
3995 That's a bit hackish since I had a new field to the structure to store
3996 its data without interfering with the subtype ones. Inheritance
3997 is tricky in C. And that's a kind of reverse inheritance with one class
3998 derivating two classes. Or maybe a game with java interfaces. Anyway,
3999 that's damn hard in C (at least).
4000 Moreover, I got tired while trying to ensure plugin separation and
4001 genericity in SG mode. MSG wants me to do weird things, so let's go for
4002 cruel hacks (temporarily of course ;).
4003 See comment in transport_private.h:71
4004 - do not include all the _interface headers in private but in the files
4005 which really need them (to cut the compilation time when they are
4008 2004-07-26 Martin Quinson
4009 Version 0.3 (protocol not changed; ABI changed)
4010 - Major overhault of the datadesc interface to simplify it:
4011 - shorted the function names:
4012 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
4013 - add a trivial way to push/pop integers into the cbps without malloc.
4014 This allows to make really generic sub_type description, which simply
4015 pop their size of the stack.
4016 - add a function gras_datadesc_ref_pop_arr() which does what users want
4017 most of the time: Declare a dynamic array (which pops its size of the
4018 stack) and declare a reference to it. Poor name, but anyway.
4019 - kill the post-send callback, add a post-receive one
4021 2004-07-23 Martin Quinson
4022 Version 0.2 (protocol changed; ABI changed)
4023 - add some testing for cpbs in the test cases, and fix some more bugs.
4024 This invalidate again the little64 data file, since I cannot regenerate
4026 - remove an awfull optimization in the logging stuff, allowing me to:
4027 - understand it again
4028 - learn gcc how to check that the argument match the provided format
4029 - fix all errors revealed by gcc after that
4030 - internal keys of dict are not \0 terminated. Deal with it properly in
4031 loggings instead of segfaulting when the user want to see the logs :-/
4033 2004-07-22 Martin Quinson
4034 - Fix some stupid bug preventing cbps (callback postit) from working
4036 2004-07-21 Martin Quinson
4037 - Some documentation cleanups
4038 - remove the useless last argument of msgtype_declare
4039 - rename the Virtu functions to fit into the 'os' namespace
4040 - move headers src/include -> src/include/gras/ and stop fooling with
4041 gras -> . symbolic link
4042 - make distcheck is now successful
4044 2004-07-19 Martin Quinson
4046 - Build shared library also
4047 - Install html doc to the right location
4048 - stop removing maintainer files in make clean
4049 - build tests only on make check
4051 2004-07-13 Martin Quinson
4053 - No major issue in previous version => change versioning schema
4054 - Re-enable little64 convertion test now that Abdou kindly regenerated the
4055 corresponding dataset.
4057 2004-07-11 Martin Quinson
4059 - Get it working with any kind of structure (we can compute the padding
4060 bytes remotely for all the architectures I have access to)
4061 - Implement the structure parsing macro (still not quite robust/complete)
4062 - Improvement to the remote testing toysuite
4064 2004-07-10 Martin Quinson
4065 [autoconf mechanism]
4066 - get ride of a bunch of deprecated macros
4067 - actually run the test for two-compliment, not only compile it :-/
4068 - test whether the structures get packed (and bail out if yes. Damn.
4069 Alignment is a serious matter)
4070 - test whether the structures get compacted (but respecting the alignment
4071 constraints of each types)
4072 - test whether the array fields of structures can straddle alignment boundaries
4074 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
4075 (took me 2 hours to find that bug, looking at the wrong place)
4076 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
4077 before sending/receiving and are used to compute the offsets of fields
4078 - Given that padding size depend even on compiler options, keep track of
4079 alignment and aligned_size only for the current architecture. Not a big
4080 deal since we send structure fields one after the other (seems
4082 - Add the datastructure used for IEEE paper by the PBIO guys to the test
4083 program, let it work on linux/gcc/little32. portability todo.
4085 2004-07-08 Martin Quinson
4086 - import and improve remote compilation support from FAST
4087 - make sure make check works on half a dozen of machines out there
4089 2004-07-07 Martin Quinson
4090 Let's say it's version 0.0.3 ;)
4091 - Implement conversions (yuhu!)
4092 - Let it work on solaris (beside conversion, of course)
4093 - Stupid me, using rand() to generate the conversion datatests in not wise.
4095 2004-07-06 Martin Quinson
4096 - Let make dist work, since I'm gonna need it to compile on remote hosts
4097 - Let Tests/datadesc_usage write the architecture on which the file was
4098 generated as first byte.
4099 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
4100 architecture descriptions.
4101 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
4102 on those architectures.
4103 - Optimization: send/recv array of scalar in one shoot
4105 2004-07-05 Martin Quinson
4106 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
4108 - Plug a whole bunch of memleaks
4109 - each process now have to call gras_{init,exit}. One day, their log
4110 settings will be separated
4111 - Continue the code factorisation between SG, RL and common in Transport.
4113 2004-07-04 Martin Quinson
4115 - Redistribution between SG and RL.
4116 We wanna have to accept in SG, so move accepted related parts of RL in
4117 the common part. (more precisely, the dynar of all known sockets is no
4118 more a static in transport.c, but part of the process_data)
4120 [gras_stub_generator]
4121 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
4123 2004-07-03 Martin Quinson
4124 - Create a new log channel tbx containing dict, set, log, dynar (to shut
4125 them all up in one shot)
4127 - Fix the ugly case of reference to dynamic array.
4128 - New (semi-public) function gras_datadesc_size to allow the messaging
4129 layer to malloc the needed space for the buffer.
4131 - gras_socket_close now expect the socket to close (and not its address to
4132 put NULL in it after it). This is because the socket passed to handlers
4133 is one of their argument (=> not writable).
4135 - propagate the interface cleanup from last week in datadesc, ie remove a
4136 superfluous level of indirection. User pass adress of variable
4137 containing data (both when sending and receiving), and not of a variable
4138 being a pointer to the data. Let's say that I like it better ;)
4139 The price for that is constructs like "int msg=*(int*)payload" in
4140 handlers, but it's a fine price, IMHO.
4142 - Let it work in RL (yuhu)
4144 2004-06-21 Martin Quinson
4146 - porting SG plugin and SG select to new standards (works almost).
4147 - plug memleaks and fix bugs around.
4150 - cleanup the prototype of data recv and force users to specify when they
4151 want to handle references to objects. Test case working even for cycles.
4152 - plug memleaks. Valgrind is perfectly ok with this.
4154 2004-06-12 Martin Quinson
4156 - cleanup the separation between plugin and main code in plugin creation
4158 2004-06-11 Martin Quinson
4160 - Reput hook for raw sockets, needed for BW experiments
4161 - kill a few lines of dead code
4162 [Data description] Interface cleanup
4163 - gras_datadesc_by_name returns the searched type or NULL.
4164 That way, no variable is needed to use a type desc once, which makes
4166 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
4167 two parameters were strings (field name, type name), leading to
4169 [Dicos] Interface cleanup
4170 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
4171 This is consistant with the dynar API.
4173 2004-04-21 Martin Quinson
4175 - Porting to new standards.
4177 - interface cleanup.
4178 There is no bag anymore, no need to take extra provision to mask the
4179 pointers behind "ID".
4180 Better splitup of functions between files create/exchange/convert.
4181 This is still a bit artificial since convert and receive are so
4182 interleaved, but anyway.
4184 - add a queued message list to procdata (the ones not matching criteria
4186 - factorize some more code between SG and RL wrt procdata
4188 - use gras_exit in example to track memleaks
4189 - get rid of gs_example now that GS is properly integrated into gras
4190 - update run_test to integrate the latest tests (datadesc)
4192 - rename WARNINGn macros to WARNn since it prooved error-prone
4194 2004-04-19 Martin Quinson
4196 - register init/exit functions within gras module mechanism
4197 - send/receive function.
4198 Convertion is not implemented, but short-cutted if not needed.
4199 struct/array elements are sent one by one (instead of block-wise), but
4200 nobody really cares (yet). Get a prototype before optimizing.
4201 - tests (using a file socket) for DD send/receive on:
4202 - base types: int, float
4203 - array: fixed size, string (ie ref to dynamic string)
4204 - structure: homogeneous, heterogeneous
4205 - chained list, graph with cycle
4206 Believe it or not, valgrind is not too unhappy with the results. The
4207 cycle happily segfaults, but the others are ok. And I'm sick of pointers
4211 - Bugfix when using a filename explicitly (instead of '-')
4213 2004-04-09 Martin Quinson
4215 - factorize more code between RL and SG in socket creation
4216 - Complete the implementation and tests of:
4218 o file (only in RL, and mainly for debugging)
4220 I lost 3 days to design a portable address resolver, and then decided
4221 that the prototype mainly have to run on my box.
4222 Addressing portability too early may be like optimizing too early :-/
4224 - use gras_init in the Tests instead of the crappy parse_log_opt
4225 (the latter function is removed)
4226 [Conditional execution]
4227 - New functions: gras_if_RL/gras_if_SG (basic support for this)
4228 [Code reorganisation]
4229 - Get rid of libgrasutils.a since it makes more trouble than it solves.
4230 Build examples against the RL library, since there is no way to disable
4231 its creation for now.
4233 For information, the beginning of coding on GRAS was back in june
4234 2003. I guess that every line has been rewritten at least twice since