2 __ _____ _ __ ___(_) ___ _ __ |___ / |___ \| ___|
3 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ __) |___ \
4 \ V / __/ | \__ \ | (_) | | | | ___) | / __/ ___) |
5 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_____|____/
9 __ _____ _ __ ___(_) ___ _ __ |___ / |___ \| || |
10 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ __) | || |_
11 \ V / __/ | \__ \ | (_) | | | | ___) | / __/|__ _|
12 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_____| |_|
15 The Clean Disk Release.
17 * Introduce an experimental Wifi network model.
18 * Introduce <disk> (cleaner logic than <storage>).
19 * SMPI: Implement Errhandlers and some more MPI3.1 calls.
20 * (+ many bug fixes and internal refactorings)
22 __ _____ _ __ ___(_) ___ _ __ |___ / |___ \|___ /
23 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ __) | |_ \
24 \ V / __/ | \__ \ | (_) | | | | ___) | / __/ ___) |
25 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_____|____/
28 The Exotic Solstice Release.
30 * Support for Solaris and Haiku OSes. Just for fun :)
31 * SMPI: more of MPI3.1; some MPI/IO and async collectives.
32 * Python bindings can now be installed from pip.
33 * (+ a whole load of bug fixes and internal refactorings)
35 __ _____ _ __ ___(_) ___ _ __ |___ / |___ \|___ \
36 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ __) | __) |
37 \ V / __/ | \__ \ | (_) | | | | ___) | / __/ / __/
38 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_____|_____|
41 The Easter Christmas Release (this one is somewhat late).
43 * Introducing the Python bindings (still beta)
44 * Doc: SMPI tutorial and platform description ported to RTD
45 * Many internal cleanups leading to some user-level speedups
46 * (+ the classical bug fixes and internal refactorings)
48 __ _____ _ __ ___(_) ___ _ __ |___ / |___ \/ |
49 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ __) | |
50 \ V / __/ | \__ \ | (_) | | | | ___) | / __/| |
51 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_____|_|
54 The Restarting Documentation (TRD) release.
56 * Start to overhaul the documentation, and move to Sphinx + RTD.
57 * Allow dynamic replay of MPI apps, controlled by S4U actors
58 * Rewrite the support for auto-restarted actors (was utterly broken)
59 * (+ the classical bug fixes and doc improvement)
62 __ _____ _ __ ___(_) ___ _ __ |___ / |___ \ / _ \
63 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ __) | | | |
64 \ V / __/ | \__ \ | (_) | | | | ___) | / __/| |_| |
65 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_____|\___/
68 The proxy snake_case() release.
70 * Sanitize the public API. Compatibility wrappers in place for one year.
71 * More CI: ~45 Proxy Apps + BigDFT + StarPU now tested nightly
72 * MPI: Port the trace replay engine to C++, fix visualization
73 * (+ the classical bug fixes and doc improvement)
76 __ _____ _ __ ___(_) ___ _ __ |___ / / |/ _ \ / |
77 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ | | (_) || |
78 \ V / __/ | \__ \ | (_) | | | | ___) || |\__, || |
79 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_| /_(_)_|
82 The Fixed ABI release.
84 * Reduce the changes to the binary interface of MSG,
85 accidentally introduced by v3.19.
87 __ _____ _ __ ___(_) ___ _ __ |___ / / |/ _ \
88 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ | | (_) |
89 \ V / __/ | \__ \ | (_) | | | | ___) || |\__, |
90 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_| /_/
93 The Moscovitly-cold Spring release.
95 * SMPI: Allow to start new actors and ranks after simulation start.
96 * SMPI: Support ICC, better testing on classical proxy apps.
97 * Some kernel headers are now installed, allowing external plugins.
98 * (+ the classical bug fixes and doc improvement)
100 __ _____ _ __ ___(_) ___ _ __ |___ / / |( _ )
101 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ | |/ _ \
102 \ V / __/ | \__ \ | (_) | | | | ___) || | (_) |
103 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_|\___/
106 The "Ho Ho Ho! SimGrid 4 beta is coming to town" release.
107 SimGrid 4 *may* be there by the next solstice.
109 * Convert almost all interesting MSG examples to S4U.
110 * New model: energy consumption due to the network.
111 * Major cleanups in the disk and storage subsystems.
112 * (+ further deprecate XBT, bug fixes and doc improvement)
114 __ _____ _ __ ___(_) ___ _ __ |___ / / |___ |
115 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ | | / /
116 \ V / __/ | \__ \ | (_) | | | | ___) || | / /
117 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_|/_/
120 The Drained Leaks release: (almost) no known leaks despite the tests.
122 * Many many internal cleanups (almost 700 commits since 3.16).
123 * The coverage of our tests is above 80%.
124 * All memleaks but one plugged; A dozen of bugs fixed.
125 * XBT: Further replace XBT with std::* constructs.
127 __ _____ _ __ ___(_) ___ _ __ |___ / / |/ /_
128 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ | | '_ \
129 \ V / __/ | \__ \ | (_) | | | | ___) || | (_) |
130 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_|\___/
133 The Blooming Spring Release: developments are budding.
135 * S4U: Progress; Activity refcounting is now automatic.
136 * XML: <AS> can now be named <zone> as they should.
137 * SMPI: Further performance improvements; RMA support.
138 * Cloud: Multi-core VMs (do not overcommit them yet)
139 * (+ bug fixes, cleanups and documentation improvements)
141 __ _____ _ __ ___(_) ___ _ __ |___ / / | ___|
142 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ | |___ \
143 \ V / __/ | \__ \ | (_) | | | | ___) || |___) |
144 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_|____/
147 The Spring Release: continuous integration servers become green.
149 * S4U: progress, integrating more parts of SimDag; New examples.
150 * SMPI: Support MPI 2.2; Convert internals to C++ (TBC).
151 * Java: Massive memleaks and performance issues fixed.
152 * (+ bug fixes, cleanups and documentation improvements)
153 _ _____ _ _ _ _ ____ ___
154 __ _____ _ __ ___(_) ___ _ __ |___ / / | || | / | ___|/ _ \
155 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ | | || |_ | |___ \ (_) |
156 \ V / __/ | \__ \ | (_) | | | | ___) || |__ _|| |___) \__, |
157 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_| |_|(_)_|____/ /_/
160 The Christmas Pi Release (better approximation).
162 * Fix various glitches in the previous release.
164 __ _____ _ __ ___(_) ___ _ __ |___ / / | || |
165 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ | | || |_
166 \ V / __/ | \__ \ | (_) | | | | ___) || |__ _|
167 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_| |_|
170 The Christmas Pi Release.
172 * Documentation reorganized and improved
174 * S4U interface further rising, toward SimGrid 4
175 - Routing code rewritten for readability
176 - Virtual Machines almost turned into a plugin
177 - MSG, SimDag, MPI interfaces mostly unchanged
179 * The model-checker now works on FreeBSD too.
181 __ _____ _ __ ___(_) ___ _ __ |___ / / |___ /
182 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ | | |_ \
183 \ V / __/ | \__ \ | (_) | | | | ___) || |___) |
184 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_|____/
187 The Half Release, a.k.a. the Zealous Easter Trim.
189 * Half of the lines of code are gone.
190 - v3.12: 286k lines; v3.13: 142k lines (+ comments)
191 - Experimental untested unused "features" removed
192 - We rewrote several parts in C++ instead of C
194 * Introducing v4 of the XML platform format
195 - Many long-due cleanups (details in the Changelog)
197 * MSG examples fully reorganized (in C and Java)
199 * The S4U interface is rising, toward SimGrid 4
200 - All host manipulations now done in S4U
201 - SimDag was mostly rewritten on top of S4U
202 - MSG & SimDag interfaces mostly unchanged
204 __ _____ _ __ ___(_) ___ _ __ |___ / / |___ \
205 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ | | __) |
206 \ V / __/ | \__ \ | (_) | | | | ___) || |/ __/
207 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_|_____|
210 The Facelift Release. Major changes:
212 * Many interface glitches addressed, everywhere.
213 - Require g++-4.7, Java 7 and boost 1.48
214 - Builds on Linux, OS X, Windows and FreeBSD
215 - See ChangeLog for renamed functions and options.
217 * Energy plugin: major cleanups/rewrites.
218 http://simgrid.org/tutorials/simgrid-energy-101.pdf
220 * Model-Checker progresses toward production use:
221 - More robust (now runs in a separate process).
222 - More efficient (with snapshots' memory compaction).
223 - More usable (execution paths replayed out of MC)
224 http://simgrid.org/tutorials/simgrid-mc-101.pdf
227 - Better standard coverage - SMP-aware collectives
228 - InfiniBand model - Early support for RMA
229 - Replay: Dynamic selector - MVAPICH2 selector
230 http://simgrid.org/tutorials/simgrid-smpi-101.pdf
232 Upcoming v3.13 will introduce new interfaces, toward SimGrid 4.
235 __ _____ _ __ ___(_) ___ _ __ |___ / / / |
236 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ | | |
237 \ V / __/ | \__ \ | (_) | | | | ___) || | |
238 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_|_|
241 The Class Release. Major changes:
243 * Surf is now in C++ (and documented!)
244 * Virtual Machine model for Cloud Simulation
245 * Surf callbacks: plug your code directly in Surf!
246 * Simcalls are script-generated to clean the mess
249 __ _____ _ __ ___(_) ___ _ __ |___ / / |/ _ \
250 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ | | | | |
251 \ V / __/ | \__ \ | (_) | | | | ___) || | |_| |
252 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_|\___/
255 The Clean Diaper Release, a.k.a. SimGrid is leak-free. Major changes:
257 * Preliminary DVFS support to track the energy consumption
258 * Java is back in the main package (and is very stable).
259 * The storage sub-modules is now believed to be usable.
260 * SMPI is now very stable (we pass most MPICH tests).
261 * Lots of memory leaks were corrected in this release.
262 * Verification and model checking further improved:
263 liveness+SMPI works; reduction through state equality detection
264 Plus the usual load of bug fixes and small improvements
267 __ _____ _ __ ___(_) ___ _ __ |___ // _ \
268 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ (_) |
269 \ V / __/ | \__ \ | (_) | | | | ___) \__, |
270 \_/ \___|_| |___/_|\___/|_| |_| |____(_)/_/
273 The "Grasgory" release. Major changes:
275 * Gras was completely removed from this version.
276 * Documentation reorganization to ease browsing it.
277 * New default value for the TCP_gamma parameter: 4MiB
280 __ _____ _ __ ___(_) ___ _ __ |___ / ( _ ) / |
281 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ / _ \ | |
282 \ V / __/ | \__ \ | (_) | | | | ___) | (_) || |
283 \_/ \___|_| |___/_|\___/|_| |_| |____(_)___(_)_|
286 The "we are told that some people want to also *install* the simgrid
289 * Add missing manpage to the archive.
292 __ _____ _ __ ___(_) ___ _ __ |___ / ( _ )
293 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ / _ \
294 \ V / __/ | \__ \ | (_) | | | | ___) | (_) |
295 \_/ \___|_| |___/_|\___/|_| |_| |____(_)___/
298 The Psssshiiiit release: SimGrid jumps into the Cloud.
301 * Experimental interface to manipulate VMs, EC2-style.
302 * Fixes around process restart and stochastic workloads
303 * platf: New C interface to create fixed or random platforms
304 * SimDag: Many fixes and improvements of typed tasks
305 * SMPI now covers more of the MPI interface.
306 More datatypes, more functions, more robust.
307 * Model-checking: mmalloc is more robust to user errors.
310 __ _____ _ __ ___(_) ___ _ __ |___ /|___ / |
311 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ / /| |
312 \ V / __/ | \__ \ | (_) | | | | ___) | / /_| |
313 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_/(_)_|
316 The "cleaning the cleanup" release. Major changes:
318 * Portability fixups for Mac OSX and Windows
319 * Some other bug fixing and various polishing.
322 __ _____ _ __ ___(_) ___ _ __ |___ /|___ |
323 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ / /
324 \ V / __/ | \__ \ | (_) | | | | ___) | / /
325 \_/ \___|_| |___/_|\___/|_| |_| |____(_)_/
328 The "spring cleanups (before the next Big Project kicks in)" release.
331 * Major cleanups all around (doc, user options, MSG, Lua, internals)
332 Small backward compatibility glitches may have been introduced
333 * Parallel execution of user code should be stable and efficient now
334 * SMPI is now considered stable
335 * Add temporals to Model-Checking (highly experimental right now)
338 __ _____ _ __ ___(_) ___ _ __ |___ / / /_ |___ \
339 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \| '_ \ __) |
340 \ V / __/ | \__ \ | (_) | | | | ___) | (_) | / __/
341 \_/ \___|_| |___/_|\___/|_| |_| |____(_)___(_)_____|
344 The "Not coding new stuff allows to polish old things" release.
346 * Portability to Mac and Windows improved.
347 * Possible misconfigurations (contexts, libPCRE) made impossible by
348 removing the option or providing sane default value.
349 * Experimental support to NS3 simulator as a back-end.
352 __ _____ _ __ ___(_) ___ _ __ |___ / / /_ / |
353 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \| '_ \ | |
354 \ V / __/ | \__ \ | (_) | | | | ___) | (_) || |
355 \_/ \___|_| |___/_|\___/|_| |_| |____(_)___(_)_|
358 The "Oops, we broke Macs too" release.
359 Bug fix to an issue preventing SimGrid from working on Mac OSX.
362 __ _____ _ __ ___(_) ___ _ __ |___ / / /_
363 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \| '_ \
364 \ V / __/ | \__ \ | (_) | | | | ___) | (_) |
365 \_/ \___|_| |___/_|\___/|_| |_| |____(_)___/
368 The "OMG! They Killed Kenny!" version. Major changes:
370 * Java and Ruby bindings were removed from the main archive
371 - They are now distributed separately
372 * GRAS is not considered as stable anymore, but experimental. Sorry.
373 * First support for parallel simulation:
374 - Can run the user code of any simulation in parallel.
375 - Basic support for multi-cores hosts in platform files
376 * Improved P2P support:
377 - Peer tag in platform files for DSL connected nodes
378 - Vivaldi routing scheme for lightweigted yet accurate models
379 * Improved SMPI: Faster Fortran, automatic privatization of C globals
380 * Tracing: trace contains the full platform hierarchy
381 exactly as declared using the ASes of the platform file
383 Plus numerous other goodies (check the ChangeLog for details)
386 __ _____ _ __ ___(_) ___ _ __ |___ / | ___|
387 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ |___ \
388 \ V / __/ | \__ \ | (_) | | | | ___) | ___) |
389 \_/ \___|_| |___/_|\___/|_| |_| |____(_)____/
392 The "Winter in Frejus" release. Also known as "ANR/ADT funding helps"
395 * New feature: Model check any simgrid simulation
396 * SMPI is now very usable.
398 - now covers the whole framework
399 - major usability improvements
401 - scalable platform management through hierarchical description
402 - new efficient way to bypass the XML parser
403 * MSG: at last asynchronous functions are available
404 * SIMDAG: many usability improvements (dotloader, ...)
405 * GRAS: finally catch up with latest internal evolutions
407 - Windows port: should be usable now but still considered experimental
408 - Autotools have now been completely removed
411 __ _____ _ __ ___(_) ___ _ __ |___ /| || | / |
412 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \| || |_ | |
413 \ V / __/ | \__ \ | (_) | | | | ___) |__ _|| |
414 \_/ \___|_| |___/_|\___/|_| |_| |____(_) |_|(_)_|
417 The "Polishing easter eggs is probably a good idea" release.
418 This is a bug fixes release only.
421 __ _____ _ __ ___(_) ___ _ __ |___ /| || |
422 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \| || |_
423 \ V / __/ | \__ \ | (_) | | | | ___) |__ _|
424 \_/ \___|_| |___/_|\___/|_| |_| |____(_) |_|
427 The "Easter in Cargese" release. Also known as (major changes):
429 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
430 ~> bindings were greatly improved
431 ~> new tracing infrastructure for better visualization introduced
433 * the "Welcome to configury modernity" release.
434 ~> we switched from autotools to cmake, and improved our cdash
437 __ _____ _ __ ___(_) ___ _ __ |___ / |___ /| || |
438 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ |_ \| || |_
439 \ V / __/ | \__ \ | (_) | | | | ___) | ___) |__ _|
440 \_/ \___|_| |___/_|\___/|_| |_| |____(_)____(_) |_|
443 The "Desktop Grid needs love too" release (also called "Xmas release").
444 Most important changes:
445 * Big speedup through lazy evaluation of the linear models
446 * Supernovae mode: Compile everything in one unit to improve inlining
447 * Simix network module for internal cleanups
448 * Load DAX of applications into SimDag
449 * Lot of small cleanups and other bug fixes
452 __ _____ _ __ ___(_) ___ _ __ |___ / |___ / |___ /
453 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ |_ \ |_ \
454 \ V / __/ | \__ \ | (_) | | | | ___) | ___) | ___) |
455 \_/ \___|_| |___/_|\___/|_| |_| |____(_)____(_)____/
458 The "Need for Speed" release.
459 Big speedup through some function inlining.
462 __ _____ _ __ ___(_) ___ _ __ |___ / |___ / |___ \
463 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ |_ \ __) |
464 \ V / __/ | \__ \ | (_) | | | | ___) | ___) | / __/
465 \_/ \___|_| |___/_|\___/|_| |_| |____(_)____(_)_____|
468 The "Simplicity does not preceed complexity, but follows it" release.
469 Most important changes:
470 * surf and simix modules reworked for simplification.
471 It lays the ground for future extensions and improvements of SimGrid
472 * SMPI was further improved, although not ready for production use yet.
474 On the way, we gained a bit more than 5% on the classical master/slave
475 example. More to come on this in future releases.
478 __ _____ _ __ ___(_) ___ _ __ |___ / |___ / / |
479 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ |_ \ | |
480 \ V / __/ | \__ \ | (_) | | | | ___) | ___) || |
481 \_/ \___|_| |___/_|\___/|_| |_| |____(_)____(_)_|
484 This dot release is mainly a maintenance one. Most important changes:
485 * We fixed a large amount of bugs all around
487 * We sanitized the way configuration is handled internally.
488 Try passing --cfg-help to binaries compiled against this version.
490 * SMPI is in better shape: lot of bugs fixing & usability improvements
491 It may be worth trying it (even if all bugs are not gone yet)
493 This version may have a bit more of memleaks than 3.3. This will be
494 fixed in a latter release.
498 / ___|(_)_ __ ___ / ___|_ __(_) __| |
499 \___ \| | '_ ` _ \| | _| '__| |/ _` |
500 ___) | | | | | | | |_| | | | | (_| |
501 |____/|_|_| |_| |_|\____|_| |_|\__,_|
503 __ _____ _ __ ___(_) ___ _ __ |___ / |___ /
504 \ \ / / _ \ '__/ __| |/ _ \| '_ \ |_ \ |_ \
505 \ V / __/ | \__ \ | (_) | | | | ___) | ___) |
506 \_/ \___|_| |___/_|\___/|_| |_| |____(_)____/
508 _ _ _ _ | |___ __ _ __| |_ ___ __| |
509 | || | ' \| / -_) _` (_-< ' \/ -_) _` |
510 \_,_|_||_|_\___\__,_/__/_||_\___\__,_|
513 homepage: http://simgrid.gforge.inria.fr/
514 download: http://gforge.inria.fr/frs/?group_id=12
516 At least, after 2 years of hard work, we managed to release the 3.3
517 version of the SimGrid framework. There is so many changes that the
518 changelog only lists the most important ones, leaving alone the small
519 improvements, bug fixing and new gadgets.
523 * New simulation models, and improvement of the GTNetS wrapper
525 * Large memory savings (mainly in parser)
526 * Faster (twice faster is not uncommon, and from 20 hours to 2
527 minutes on very large scenarios)
528 * Much better scalability (tested up to 250,000 processes)
530 * Complete regression testing framework so that you can trust the tool
531 * Lot of neat new modules in the XBT toolbox
533 This version was thoroughly tested on linux 32bits and 64bits
534 (debian), as well as Mac OSX (leopard).
536 Unfortunately, our windows-guy left, and we cannot release the windows
537 version at the same time than the other archs. Any help would be
538 really welcomed here.
540 Some of the 96 included test suites are known to fail, but everything
541 should work anyway (don't panic):
542 * The amok module does not work in real deployment ATM, but I don't
543 see this as release critical since I'm not aware of anyone needing
545 * Some tests about the ability of GRAS to receive messages from
546 exotic platforms fail because I've lost access to these platforms
548 * the example/gras/pmm sometimes fails (about 1/10 of cases). I'm
549 quite puzzled, but I suspect a bug in the test, not in the lib.
550 * the tesh auto-tests "fail" on Mac OSX. This is because "rm -rf" is
551 sometimes too verbose (when the OS creates hidden files, I
552 suspect), but tesh definitely work as the rest on this arch.
554 We hope to manage to do more timely releases in the future, even if
555 that may turn out difficult since big stuff is coming (I don't say
556 much here for the suspense ;)
558 We hope you'll enjoy this new version, and please report any feedback
559 on the <simgrid-user@lists.gforge.inria.fr> list.
561 Martin Quinson (for Da SimGrid Team)