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!337: Fix link_energy plugin for wifi platforms
68 - GH!339: Add Mailbox set_receiver method to python binding
70 ----------------------------------------------------------------------------
72 SimGrid (3.25) February 2. 2020 (aka 02 02 2020)
74 The Palindrom Day Release.
76 Important user-visible changes:
77 - Improve the Python usability (stability and documentation).
78 - A nasty synchronization bug was ironed out, see also below.
79 - Python's doc was organized as a separate tree, now integrated with C++.
80 - C bindings of S4U were not part of the doc.
81 - The C++ doc was also improved as methods are now split by theme.
82 - Further deprecate MSG: you now have to pass -Denable_msg=ON to cmake.
83 - This is mandatory to use the Java bindings.
84 - OFF by default; The plan is to completely remove MSG by 2020Q4 or 2021Q1.
85 - SimDAG++: Automatic dependencies on S4U activities (experimental)
86 - Some features are already implemented but not all of them
87 - Cannot block an activity until it's scheduled on a resource
88 - No heterogeneous wait_any() that would mix Exec/Comm/Io activities.
89 - See examples/s4u/{io,exec,comm}-dependent for what's already there.
92 - Upgrade documented Java dependency to Java 8 (earlier versions don't work).
93 - Drop support for Viva/Triva (old visualization tools), hence removed
94 TRACE_get_node_types() and TRACE_get_edge_types() functions.
97 - Require pybind11 version 2.4.
98 - Greatly improve locking during context switches with Python.
99 - Declaring Python callbacks to this_actor::on_exit is now working.
100 - No more tests are failing currently, even on win32.
103 - Actor: Merge signals on_migration_start/end into on_host_change
104 - Actor: Rename migrate() into set_host()
105 - Disk: Allow users to get the read and write nominal bandwidth values
106 - Exec: Implement wait_for(timeout)
107 - Io: Implement wait_for(timeout)
110 - Parse errors now raise a simgrid::ParseError that you may want to catch.
113 - In simgrid::kernel::resource::Model, the methods next_occuring_event*() have
114 been renamed to fix a spelling error. As usual, the previous definitions are
115 kept with a deprecation warning. However, to avoid runtime errors, it is now
116 forbidden to override these deprecated methods in a derived class. Please use
117 the new names immediately if you need to override them.
120 - Remove unused parameter 'free_ctn' for xbt_dict_set() and xbt_dict_set_ext().
121 - Drop unused functions for dicts and dynars: xbt_dict_cursor_get_elm,
122 xbt_dict_get, xbt_dict_get_elm, xbt_dict_get_ext, xbt_dict_get_key,
123 xbt_dict_remove, xbt_dict_reset, xbt_dynar_compare, xbt_dynar_dump,
124 xbt_dynar_foreach_ptr, xbt_dynar_free_data, xbt_dynar_free_voidp,
125 xbt_dynar_init, xbt_dynar_insert_at_as, xbt_dynar_merge,
126 xbt_dynar_remove_n_at, xbt_dynar_replace, xbt_dynar_search, xbt_dynar_set.
127 - New module: random, providing classical random numbers generators.
130 - New option : "smpi/auto-shared-malloc-thresh" which sets a value for
131 allocations' size above which they are considered "shared" by default (as if
132 they were performed through SMPI_SHARED_MALLOC macros).
133 Default = 0 = disabled feature.
134 Note : malloc, calloc and free are now overriden by smpicc/cxx by default.
135 This can cause some troubles if codes are already overriding these. If this
136 is the case, defining SMPI_NO_OVERRIDE_MALLOC in the compilation flags can
137 help, but will make this feature unusable.
138 - Input check is now performed much more consistently and outputs precise
139 warnings for each error found
140 - New supported calls : MPI_File_set_view, MPI_File_get_view
141 - MPI I/O now only supports disks, as storage is discontinued.
142 - MPI I/O allows opening files without specifying absolute path
143 - Note : SMPI configuration options are now initialized by smpi_init_options()
144 call, which should be called if SMPI is not being used through smpirun.
146 Fixed bugs (FG#.. -> framagit bugs; FG!.. -> framagit merge requests):
147 - FG#9: Python bindings crashing
148 - FG#39: Missing s4u::Comm::wait_any_for example
149 - FG#42: Add support for ThreadSanitizer (TSan)
150 - FG!19: Removing RngStream
151 - FG!20: A module for RNG calls
152 - FG!21: Choice between ad-hoc and standard distributions implementations
154 - FG!25: Fix link in Mutex doc
155 - FG!26: Fix links in SMPI interface doc
156 - GH#31: [MC] please provide an option to make MPI_Send asynchronous
157 - GH#305: Unscheduled tasks are still excuted
158 - GH#313: smpirun: manual outdated w.r.t. --help
159 - GH#321: [S4U] Get task remaining work ratio
160 - GH#323: Crash when an actor turn off his physical host
161 - GH#335: Missing links on dragonfly example svg
162 - https://lists.gforge.inria.fr/pipermail/simgrid-user/2019-November/004653.html:
163 MPI_Cart_sub was not working properly. Kudos to Jonathan Borne for the report.
165 ----------------------------------------------------------------------------
167 SimGrid (3.24) October 9. 2019
169 The Clean Disk Release.
172 - Introduce a s4u::Disk interface to manage the newly introduced <disk>
173 tag. s4u::Disk is called to supplant s4u::Storage in a near future. It
174 thus becomes the default resource to execute I/O operations. Examples
175 and the file system plugin have been modified to use disks instead of
176 storage elements. Storage can still be used but is doomed to disappear.
177 Users are thus adviced to update their simulators accordingly.
178 - Barrier::wait returns SG_BARRIER_SERIAL_THREAD for (only) one actor
179 for consistency with pthread_barrier_wait()
180 - Host::get_englobing_zone() returns the englobing netzone
181 - Actor::on_destruction is now called in the destructor
182 Actor::on_termination new signal called when the actor terminates
184 - Global signals are now part of the Engine:
185 - on_platform_creation: after config settings, before the XML parsing
186 - on_platform_created: right after the XML parsing
187 - on_time_advance: each time the clock advances
188 - on_simulation_end: after simulation, before cleanups
189 - on_deadlock: as the name implies.
191 - sg_{actor,host,link}_{data,data_set}() now all exist.
192 Use them to attach user data to the object and retrieve it.
195 - Introduce an experimental Wifi model. It sounds reasonable
196 according to the state of the art, but it still has to be properly
197 validated, at least against ns-3 if not against reality.
198 - Improved the usability of ns-3. Several bugs were ironed out.
199 - host_energy: Wattage was expressed as 'idle:oneCore:allCores'.
200 It is now expressed as 'idle:epsilon:allCores' to properly model the
201 consumption of non-whole tasks on mono-core hosts. More info in the doc.
204 - convert a new set of functions to the S4U C interface and move the old MSG
205 versions to legacy (MSG_process_self*, MSG_process_{un}ref, ...)
208 - Fortran bindings for DVFS have been removed.
209 - Add support for MPI_Irsend, MPI_Rsend, MPI_Rsend_init, MPI_Bsend,
210 MPI_Ibsend, MPI_Bsend_init, MPI_Buffer_attach, MPI_Buffer_detach
211 - SMPI can now be selected by cmake's find_module(MPI) with
212 MPI_C_COMPILER, MPI_CXX_COMPILER, MPI_Fortran_COMPILER variables.
213 - Add support for MPI Errhandlers in Comm, File or Win. Default errhandler is now
214 MPI_ERRORS_ARE_FATAL, so codes which were sending warnings may start failing.
215 - trace-call-location can be used with TI traces, and replayed, and is compatible
216 with smpi/comp-adjustment-file.
217 - sleep events are now correctly traced/replayed.
218 - Default for trace-call-location is now to use file names and not full paths.
219 To revert to previous behavior (in case of collision of filenames), option
220 "smpi/trace-call-use-absolute-path" can be set to yes.
223 - Use the included xxHash as an hash implem when C++14 is usable.
224 - Option model-checker/hash was removed. This is always activated now.
225 - New option smpi/buffering controls the MPI buffering in MC mode.
226 - MPI calls now MC_assert() that no MPI_ERR_* code is returned.
227 This is useful to check for MPI compliance.
230 - New section on plugins: how to define a new one, and existing ones.
233 - xbt_mutex_t and xbt_cond_t are now marked as deprecated, a new C interface
234 on S4U is already available to replace them by sg_mutex_t and sg_cond_t.
237 - Introduce the <disk> tag as a replacement of the <storage>, <storage_type>,
238 and <mount> tags. The rationale is finish to decouple what should be handle
239 by SimGrid kernel (i.e., resources and activities) from plugins built in
240 user space (e.g., the file system plugin). This new tag currently accepts
241 only three attributes (id, read_bw, and write_bw). All the other information
242 that was declared with the storage related tags now has to be expressed as
243 properties. An example of platform using this new tag is available at
244 examples/platforms/hosts_with_disks.xml
247 - 'expect signal' can now accept more than one potential signal.
249 Fixed bugs (FG#.. -> framagit bugs; FG!.. -> framagit merge requests):
250 - FG#28: add sg_actor_self (and other wrappers on this_actor methods)
251 - FG#29 and FG#33: provide a new C API to mutexes and condition variables
252 - FG#30: convert MSG_process_{un}ref to sg_actor_{un}ref
253 - FG#31: per-actor data
254 - FG#34: SG_BARRIER_SERIAL_THREAD?
255 - FG#35: model-checker does not like buster-produced binaries
256 - FG!13: MC: complete workaround in the error msg seen on modern systems
257 - FG!15: execute_flops now logs compute
258 - FG!16: Fix the ns-3 bindings when several flows are simultaneously finishing
259 - FG!17: ns-3: unblock the right number of communications + others issues
260 - FG!18: Improving the performance of the ns-3 bindings
261 - GH#189: Energy consumption of parallel tasks
262 - GH#219: Error in the throughput of TCP transfer
263 - GH!330: Minor polishing of English: Configuring_Simgrid
264 - GH!331: Fix a doc error about actors (Tutorial_algorithms)
265 - GH!332: Add '-O0' flag for: cmake -DCMAKE_BUILD_TYPE=Debug
266 - GH!334: Rework energy plugin, again
268 ----------------------------------------------------------------------------
270 SimGrid (3.23.2) July 8. 2019
273 - Nicer introduction page.
274 - Migrate the "Deploy your application" page to the new doc.
275 - Move Java as a subtree of MSG.
278 - Rename simgrid::TimeoutError to simgrid::TimeoutException.
281 - Drop xbt_dynar_sort_strings().
284 - Really fix FG#26: Turning off a link should raise NetworkFailureException
285 - FG#27: Wrong exception thrown to wait_any when link is turned off
286 - GH#328: Java: Canceling multiple tasks in a single vm/host
288 ----------------------------------------------------------------------------
290 SimGrid (3.23) June 25. 2019
292 The Exotic Solstice Release.
295 - SunOS and Haiku OS support. Because exotic platforms are fun.
296 - Stop setting random seed with srand48() at initialization.
297 - Use addr2line as a fallback for stacktraces when backtrace is not available.
298 - Build option -Denable_documentation is now OFF by default.
299 - Network model 'NS3' was renamed into 'ns-3'.
302 - Simgrid can now hopefully be installed with pip.
305 - wait_any can now be used for asynchronous executions too.
308 - New log appenders: stdout and stderr. Use stdout for xbt_help.
309 - Drop xbt_dict_dump.
312 - 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
313 - MPI/IO is now supported over the Storage API (no files are written or read, storage is simulated). Supported calls are all synchronous ones.
314 - MPI interface is now const correct for input parameters
315 - MPI_Ireduce, MPI_Iallreduce, MPI_Iscan, MPI_Iexscan, MPI_Ireduce_scatter, MPI_Ireduce_scatter_block support
316 - Fortran bindings for async collectives.
317 - MPI_Comm_get_name, MPI_Comm_set_name, MPI_Count support.
320 - Remove option 'model-check/record': Paths are recorded in any cases now.
321 - Remove option 'model-check/sparse-checkpoint': Checkpoints are now
322 always sparse. That's an immense gain in memory, and can even be
323 faster because of cache effects. So there is no need to clutter the
324 code to allow the user to go for the unefficient mode.
327 - Remove the lagrange-based models (Reno/Reno2/Vegas). The regular
328 models proved to be more accurate than these old experiments.
330 Fixed bugs (FG=FramaGit; GH=GitHub -- Please prefer framagit for new bugs)
331 - FG#1: Broken link in error messages
332 - FG#2: missing installation documentation
333 - FG#3: missing documentation in smpirun
334 - FG#6: Python bindings not available on PyPI
335 - FG#7: simple cmake call requires doxygen
336 - FG#8: make python bindings an optional dependency
337 - FG#10: Can not use MSG_process_set_data from SMPI any more
338 - FG#11: Auto-restart actors forget their on_exit behavior
339 - FG#12: -Denable_lto=OFF doesn't disable LTO
340 - FG#13: Installs unstripped file 'bin/graphicator'
341 - FG#14: Installs the empty directory 'doc/simgrid/html'
342 - FG#15: Setting -Denable_python=OFF doesn't disable the search for pybind11
343 - FG#17: Dead link in doc (pls_ns3)
344 - FG#20: 'tesh --help' should return 0
345 - FG#21: Documentation link on http://simgrid.org/ broken
346 - FG#22: Debian installation instruction are broken
347 - FG#26: Turning off a link should raise NetworkFailureException exceptions
348 - GH#133: Java: a process can run on a VM even if its host is off
349 - GH#320: Stacktrace: Avoid the backtrace variant of Boost.Stacktrace?
350 - GH#326: Valgrind-detected error for join() when energy plugin is activated
352 ----------------------------------------------------------------------------
354 SimGrid (3.22) April 1. 2019
356 The Easter Christmas Release (this one is somewhat late).
359 - We are excited to introduce the SimGrid/S4U interface to your neighborhood
360 - Not complete yet: asynchronous activities (amongst others) are still missing
361 - Still ongoing: the interface may change in the future. We need more
362 testers! Please report any glitches.
363 - No new project using Java should start now. Please switch to Python.
366 - Some of the internal cleanups may lead to speed improvements:
367 - The hard limitation on the amount of simulated actors with
368 Java+Mac was removed. Now, the available memory is the only limit.
369 - Our refcounting was tidyied, leading to 10% speedups in some cases.
370 - We are still working on making our code robust to the actor kills
371 and hosts' churn. Things are improving, but it's not perfect yet.
372 - Replaced our own code to display a backtrace (that was forking addr2line)
373 with the Boost.Stacktrace library.
374 You won't see your backtraces without this optional dependency.
375 - Bump cmake dependency to 3.5 (provided by Ubuntu 16.04).
376 - Stop setting random seed with srand() at initialization.
379 - In <host> and <peer>, 'availability_file' is now 'speed_file'.
380 XML file version remains 4.2 since old files are still compatible.
383 - Process termination which was broken at version 3.21 has been repaired.
384 - Expose host load plugin: loadInit, getCurrentLoad, getComputedFlops, getAvgLoad
385 - Hide the examples into examples/deprecated. New users should use Python.
388 - Drop MSG_process_create_from_stdfunc() from the API.
389 This C++ function was a pimple in the C API, made necessary at some
390 point by the Java bindings. This is fixed now.
391 - Hide the examples into examples/deprecated. New users should use S4U.
392 - MSG_process_create and MSG_process_attach now crash if the host used
393 to run this process is off.
394 - Fix the protype of MSG_process_on_exit()
395 Now use (int,void*) callbacks instead of (void*,void*) ones.
396 The implementation was ways too messy to actually work, I guess.
399 - Change the way SMPI_SAMPLE_* macros work to avoid invalidating cache
400 too often and provide more accurate timings.
401 - Add -gdb, -lldb, and -vgdb shortcuts to help debug MPI codes with smpirun
402 - MPI_Alltoallw support
403 - Partial MPI nonblocking collectives implementation: MPI_Ibcast, MPI_Ibarrier,
404 MPI_Iallgather, MPI_Iallgatherv, MPI_Ialltoall, MPI_Ialltoallv, MPI_Igather,
405 MPI_Igatherv, MPI_Iscatter, MPI_Iscatterv, MPI_Ialltoallw.
406 - MPI_Request_get_status, MPI_Status_set_cancelled, MPI_Status_set_elements
408 - Basic implementation of generalized requests (SMPI doesn't
409 allow MPI_THREAD_MULTIPLE) : MPI_Grequest_complete, MPI_Grequest_start
412 - Drop sg_cmdline. Please use xbt_cmdline instead.
413 - Drop the C xbt_os_mutex_t; Use the C++11 std::mutex.
414 - Drop the C xbt_os_sem_t; Use the C++ xbt::OsSemaphore.
415 OsSemaphore is implemented in a portable way with C++11 threads.
416 This should allow much more threads to be created at the same time,
417 allowing Mac and Java users to simulate many more actors.
418 - Implement the 'thread' factory with std::thread instead of xbt ones.
419 It is not possible to set the stack size with threads anymore, but
420 -fsplit-stack is the way to go nowadays when using threads.
421 - Drop the xbt_os_thread_t module (now unused)
422 - Drop xbt_ex_display(), use simgrid::xbt::log_exception() instead.
423 - Drop xbt_str_join_array().
424 - Drop cunit, use Catch2 instead.
427 - Many cleanups in the kernel::activity namespace. This was long
428 overdue, and shall open the path to many future endeavors.
431 - #132: Java: a process can not shut down its own host
432 - #220: S4U: detached send causes exception if sender terminates soon after sending
433 - #261: Document the parameters of parallel execution's constructor
434 - #300: [s4u] BarrierPtr is missing
435 - #314: SMPI args internal cleanup
436 - #316: Fix a bug related to the CPU utilization of multi-core VM
437 - #318: Invalid trace file when using option --cfg=tracing/smpi/display-sizes:yes
438 - #324: S4U: Attempting to create an actor on turned off host segfaults instead of throwing
439 - #325: Turning off a host has different behavior on sleeping actors and computing actors
441 ----------------------------------------------------------------------------
443 SimGrid (3.21) October 3. 2018
445 The Restarting Documentation (TRD) Release.
448 - Convert the user manual to Sphinx for improved usability.
449 Unstable version now hosted on https://simgrid.frama.io/simgrid
450 Many glitches remain; stay tuned.
451 - Restrict the Doxygen reference API to the installed header files.
452 (documenting all internals this way is overkill + doxygen scales badly)
453 - New tutorial on S4U (highly inspired from the old MSG one, but with
454 a git repository to fork as a starting point, and a docker image)
455 - Started but not finished a SMPI tutorial inspired from the JLPC'14 one.
456 - The Developper manual is still to be converted (not compiled until then)
457 - Some parts are still missing in this conversion (such as the
458 platform and deployment sections) while others were blindly converted
459 and would need more love (such as the configuration flags).
460 Things will certainly further improve in the future releases.
463 - Fully reimplement auto_restart mechanism that was utterly broken
464 (fix #22, #131 and #281 that were all very related)
465 - Implement semaphores (fix #303 and #291)
466 - When creating an actor from a function and its parameters,
467 move-only parameters are not allowed anymore, as it would prevent
468 the actor to be restartable if its parameters are consumed on run.
469 - s4u::Io: IOs go asynchronous as activities. New methods in s4u::Storage:
470 - io_init(sg_size_t, s4u::Io::OpType) to create a READ or WRITE asynchronous
471 IO operations that can be started, waited for, or canceled as a regular
473 - read_async(sg_size_t) and write_async(sg_size_t) which are wrappers on
477 - Rename 'power' and 'power_used' variables into 'speed' and 'speed_used'
478 - New host variable: 'core_count'
481 - Remove xbt_os_thread_specific features
482 - Remove portability wrapper to condition variables
483 - Remove xbt_os_thread_yield()
486 - MPICH collective selector now mimics MPICH 3.3b
487 - OpenMPI collective selector now mimics OpenMPI 3.1.2 (default "tuned" setting)
488 - MPI_Init(NULL,NULL) is now allowed
489 - smpi/wtime option now injects time in gettimeofday or clock_gettime calls
490 - Command-line arguments should now be handled properly in Fortran simulations
491 - MPI Attributes and related callbacks should work in Fortran
492 - Apps using C + Fortran should now work
493 - MPI_* calls now check for non MPI_SUCCESS return values and emit warnings
494 - Support MPI_Error_String
497 - Due to an internal bug, Msg.run() must now be your last line.
498 We hope to fix it in a future release, and we are sorry for the inconvenience.
501 - #22: Process autorestart seem to only work with CAS01 cpus
502 - #56: Feature request: dynamic SMPI replay
503 - #93: simgrid should not eat --help
504 - #111: How to change the loopback link characteristics?
505 - #116: Platform cluster radical
506 - #117: Platform cluster/host order
507 - #129: Replay_multiple on steroid
508 - #131: Java : autostart does not work
509 - #143: Setting a breakpoint at a given time
510 - #235: Network energy models should be integrated
511 - #264: Add ptask L07 resource tracing
512 - #271: Dynamic and manual replay of SMPI traces
513 - #279: Breakpoints option uses time deltas instead of absolute time
514 - #281: Daemonized actor no longer daemonized after an auto-restart
515 - #282: TIT convertor erase traces when using absolute path in the trace list file
516 - #285: segfault when a s4u actor kills itself with msg process tracing activated
517 - #286: Pajé traces are not exposing the number of cores
518 - #287: Command-line parsing should stop when encountering '--'
519 - #288: MPI_Init(NULL, NULL)
520 - #289: Improve documentation of Actor::on_destruction and this_actor::on_exit()
521 - #290: Method to check if a mailbox has a message ready to be consumed
522 - #291: [s4u] semaphores do not seem available yet
523 - #294: Alltoall collective implementation of mpich
524 - #295: Starting a Host as OFF is not supported
525 - #296: DTD too permissive
526 - #299: Add a s4u barrier example
528 ----------------------------------------------------------------------------
530 SimGrid (3.20) Released June 24. 2018
532 The proxy snake_case() release.
535 - The whole API is now using snake_case() instead of mixing it with camelCase.
536 Compatibility wrappers in place for one year.
537 - We took the opportunity to increase the consistency of the API.
538 Please report any remaining glitches.
539 - New function simgrid::s4u::Host::get_actor_count:
540 Returns the number of actors running on a specific host.
543 - SMPI is now tested with ~45 proxy apps from various sources, with none or
544 only minor patching needed: check https://github.com/simgrid/SMPI-proxy-apps
545 - Replay: The replay file has been re-written in C++.
546 - Replay: Tags used for messages sent via MPI_Send / MPI_Recv are now
547 supported. They are stored in the trace and used when replayed.
548 - Basic support of MPI_Cancel. Robustness not guaranteed.
549 - Support of MPI_Win_allocate_shared, MPI_Win_shared_query, MPI_Comm_split_type
550 (only for MPI_COMM_TYPE_SHARED).
551 - New option: smpi/privatize-libs, to add external shared libs to be privatized
552 by SMPI. They will be copied locally and loaded separately by each process.
553 Example --cfg=smpi/privatize-libs:"libgfortran.so.3;libscalapack.so".
554 - Tracing: add tracing for MPI_Start, Startall, Testall, Testany
555 - Interception of getopt, getopt_long and getopt_long_only calls to avoid issues
556 with internal index optind with multiple processes. Only works if MPI_Init has
558 - Fortran: SMPI builds a mpi.mod file which should allow use of "use mpi"
559 syntax without preprocessing tricks.
562 - Change --cfg=tracing/msg/vm to --cfg=tracing/vm as virtual machine
563 behavior tracing is no longer limited to MSG
564 - TIT (Time Independent Traces): We finally support tags. Unfortunately,
565 this means that traces now need to be updated or re-obtained; both Irecv
566 and Isend lines in your traces have now in total 5 mandatory fields:
567 <rankid> <command> <to/from rankid> <tag> <size>
568 To update your traces, it suffices to add a 0 for the tag here.
569 - TIT now also supports waiting for a distinct request via MPI_Wait.
570 Wait/Test now wait for a specific request, not just the last one that was
571 issued. This unfortunately means another update, because we need to
572 identify which request you want to wait for. We do this via the
573 triplet (sender, receiver, tag), which needs to be added:
574 <rankid> <command> <sender> <receiver> <tag>
575 - Actions are now in lower case (e.g., "allReduce" becomes "allreduce").
576 New script simgrid_convert_TI_traces.py: upgrade your TI traces.
579 - The deprecation of MSG is ongoing (but this should not impact you).
580 Many MSG functions are now simple wrappers on the C API of S4U. If
581 you wish to convert your code to S4U, find the S4U counterparts of
582 your MSG calls in src/msg/msg_legacy.cpp.
583 - MSG can still be used, but won't evolve anymore.
586 - Allow to run the Link energy plugin from the command line with
587 --cfg=plugin:link_energy
588 - Rename Energy plugin into host_energy
589 - Rename Load plugin into host_load
592 - Add parameter --cfg=simix/breakpoint to raise a SIGTRAP at given time.
593 - kill simix::onDeadlock() that was somewhat dupplicating s4u::on_deadlock()
594 - Improve performance when handling timeouts of simix synchros.
597 - Config: the C API is now deprecated (will be removed in 3.23), and
598 the C++ API has been slightly improved.
601 - Fix several build issues on OSX.
602 - Move simgrid_config.h to simgrid/config.h (old header still working)
605 - #143: Setting a breakpoint at a given time
606 - #150: Inconsistent event names in SMPI replay
607 - #258: daemonized actors hang after all non-daemonized actors have completed
608 - #267: Linker error on unit_tmgr
609 - #269: SMPI: tracing of MPI_Wait/all/any broken
610 - SMPI: Fix various crashes with combined use of MPI_PROC_NULL and MPI_IGNORE_STATUS
612 ----------------------------------------------------------------------------
614 SimGrid (3.19.1) Released March 22 2018
616 The Fixed ABI Release.
618 As you may know, we are currently refactoring SimGrid in deep.
619 Upcoming SimGrid4 will be really different from SimGrid3: modular,
620 standard and extensible vs. layered, homegrown and rigid. C++ vs. C.
622 Our goal is to smooth this transition, with backward compatibility
623 and automatic update paths, while still progressing toward SimGrid4.
625 SimGrid remains open during works: The last pure SimGrid3 release was
626 v3.12 while all subsequent versions are usable alpha versions of
627 SimGrid4: Existing interfaces remain unchanged, but the new S4U
628 interface is budding and the internals are deeply reorganized.
630 Since 2015, we work hard to reduce the changes to public APIs. When
631 we need to rename a public library symbol in S4U, we let your
632 compiler issue an explicative warning when you use the deprecated
633 function. These messages remain for four releases, i.e. for one full
634 year, before turning into an error. Starting with v3.15, your can
635 also adapt to API changes with the SIMGRID_VERSION macro, that is
636 defined to 31500 for v3.15, to 31901 for v3.19.1 and so on.
638 Starting with this v3.19.1, our commitment to reduce the changes to
639 the public interfaces is extended from the API to the ABI: a program
640 using only MSG or SimDag and compiled against a given version of
641 simgrid can probably be used with a later version of SimGrid without
642 recompilation. We will do our best... but don't expect too much of
643 it, that's a really difficult goal during such profund refactoring.
645 The difference between v3.19 and v3.19.1 is that the former was
646 accidentally breaking the ABI of MSG, while the later is restoring
649 S4U and kernel APIs will still evolve until SimGrid4, with one-year
650 deprecation warnings as currently. In fact, cleaning up these
651 interfaces and converting them to snake_case() is one release goal of
652 v3.20. But don't worry, we are working to smooth this upgrade path.
654 In summary, new projects should start with S4U to benefit of the
655 future, but old MSG projects should still be usable with no change.
657 ----------------------------------------------------------------------------
659 SimGrid (3.19) Released March 20 2018
661 The Moscovitly-cold Spring release.
663 SMPI user-visible improvements:
664 - Support of MPI_Type_create_subarray
665 - Unimplemented MPI calls now abort (instead of issuing a warning)
666 Some harmless calls around errhandlers still only issue a warning.
667 - MPI_Sendrecv was behaving badly when MPI_PROC_NULL was sender or receiver.
668 - Starting MPI ranks (or even MSG/S4U actors) once the simulation started
669 is now possible (mmap privatization was refactored to this end).
670 Adding new SMPI instances should also be technically doable now.
672 SMPI internal cleanups:
673 - Removed index notion from SMPI -- no more "getPid() - 1"!
674 In tracing files, actors are called rank-<PROCESS-ID> but these are
675 NOT the real ranks (tracing several communicators is not supported yet).
676 - Deprecate smpi_process_index() (will be removed in 3.22)
677 - Better testing on classical proxy apps, through an external project:
678 https://github.com/simgrid/SMPI-proxy-apps/
681 - Use a graphical TOC to make it easier to find the documentation you need
682 - Revamp the MSG tutorial
685 - Fix MSG_task_get_remaining_work_ratio(): return 1.0 for unstarted tasks.
686 - Remove parameter of MSG_process_killall().
687 Resetting the PID was bogus anyway (several actors could have the same PID).
690 - Execution->setHost() can be called after start(), to migrate it.
691 - Comm::test_any() is now implemented.
692 - s4u::Actor now has onCreation() and onDestruction() signals.
693 - Install some kernel header files for the users' plugins and more.
694 Warning, their API is really not stable yet.
695 include/simgrid/kernel/resource/{Action,Resource,Model}.hpp
696 include/simgrid/kernel/routing/*Zone.hpp
699 - SD_task_dependency_add(): remove unused parameters 'name' and 'data'.
701 Build System and other cleanups:
702 - Remove unused run-time parameter "tracing/onelink-only".
703 - SimGrid now works with intel compilers (MC still buggy)
704 - Remove XBT_LOG_CONNECT, it should be useless nowadays.
705 - tesh kills subprocesses on timeout (but not on windows)
708 - Rename FULLDUPLEX into SPLITDUPLEX (old name still accepted)
711 - #194: Feature request: simgrid::s4u::Comm::test_any()
712 - #245: migrating an actor does not migrate its execution
713 - #253: Feature Request: expose clusters as objects
714 - #254: Something seems wrong with s4u::Actor::kill(aid_t)
715 - #255: Tesh broken on Windows
716 - #256: Modernize FindSimGrid.cmake
717 - #257: Fix (ab)use of CMake install
719 ----------------------------------------------------------------------------
721 SimGrid (3.18) Released December 24 2017
723 The "Ho Ho Ho! SimGrid 4 beta is coming to town" release.
725 MSG IS NOW DEPRECATED. Please use S4U for new projects.
726 - Support for MSG should not be removed from SimGrid before 2020,
727 but future evolutions will be limited to the integration of
728 user-provided patches.
731 - s4u::onDeadlock() signal, run before stopping the simulation.
732 - s4u::Exec: asynchronous executions (abstraction of background
734 - s4u::Host->getLoad() returns the achieved speed in flops/s
737 - Link::name() is deprecated and will be removed in v3.21, use
738 Link::getCname() instead.
739 - Mailbox::getName() changed to return a std::string, use
740 Mailbox::getCname() instead to get a char*.
741 - Storage::getName() changed to return a std::string, use
742 Storage::getCname() instead to get a char*.
743 - s4u::allStorages() becomes s4u::getStorageList(whereTo)
744 to have both allocation and deallocation of the map in user space.
747 - Forbid the use of MSG_task_get_flops_amount() on parallel tasks:
748 The amount of flops remaining to do is a vector, not a scalar.
749 - Introduce MSG_task_get_remaining_work_ratio(), which does what its
750 name implies on both sequential and parallel tasks.
751 - Both changes fix GitHub's #223 using PR #237 as a basis.
752 Thanks Michael Mercier.
753 - Most examples were converted to S4U and hidden elsewhere at tests.
754 Rationale: we still want MSG to work; we want newcomers to use S4U.
757 - LMM stuff moved to its own namespace: simgrid::kernel::lmm.
758 - Renamed LMM classes (e.g. s_lmm_system_t -> System).
761 - Switch to the faster dlopen privatization mechanism by default
762 - Documentation improvments
765 - Live migration is getting moved to a plugin. Dirty page tracking is
766 the first part of this plugin. This imply that VM migration is now
767 only possible if one this function is called:
768 - C/MSG: MSG_vm_live_migration_plugin_init()
769 - C/C++: sg_vm_live_migration_plugin_init()
770 - Java: Msg.liveMigrationInit()
771 For C and C++, "simgrid/plugins/live_migration.h" also has to be
775 - Define class simgrid::xbt::Path to manage file names.
776 - Removed unused functions:
777 - xbt/file.h: xbt_basename(), xbt_dirname(), xbt_getline()
778 - xbt/graph.h: xbt_graph_edge_get_length(), xbt_graph_edge_set_length,
779 xbt_graph_export_graphviz()
780 - xbt/str.h: xbt_str_join()
781 - Remove unused datatypes:
782 - xbt/heap.h: use std::priority_queue or boost::heap instead
783 - xbt/swag.h: use boost::intrusive::list instead
786 - New link_energy plugin for the consumption of the links.
787 - All of the operations on files and storage contents have been
788 packaged into a plugin (src/plugins/file_system). The current
789 public interface can be found in
790 include/simgrid/plugins/file_system.h
791 To use these functions you now have to initialize the plugin by
792 calling MSG_storage_file_system_init() just after calling
793 MSG_init() or sg_storage_file_system_init() just after creating
797 - Remove the undocumented/untested tag <include>
800 - Remove viva specific tracing as the tool is no longer maintained
803 - #248: Kill of finished processes leads to segfault
804 - #240: xbt_cond_wait_timeout should gracefully return for C apps
805 - #239: please implement signal s4u::onDeadlock()
806 - #230: segfaults when exit() without run()
807 - #225: s4u::Actor::kill() doesn not really kill victims in a join()
808 - #223: MSG_task_get_flops_amount() not working with parallel tasks
809 - #222: Actor::kill() doesn't really kill and segfaults
810 - #221: odd LMM warning when killing an actor
811 - #120: Memory leak when the processes are forcefully killed
813 ----------------------------------------------------------------------------
815 SimGrid (3.17) Released October 8 2017
817 The Drained Leaks release: (almost) no known leaks despite the tests.
819 Even very long simulations will preserve your memory: our testsuite
820 stresses SimGrid for over 45mn on fast machines for a coverage of
821 over 80%, and there is only one single known leak, of about 4kb.
825 - Comm.detach(): start and forget about asynchronous emission. A cleanup
826 handler may be given to free resources if the comm cannot be completed.
827 - this_actor::send(mailbox) is now mailbox->put()
828 - New: simgrid::s4u::Comm::wait_all()
829 - New: Host.execute() for remote executions.
832 - Unused option network/sender-gap is removed.
835 - Deprecate MSG_task_isend_with_matching(): This unused feature
836 really complicates our internals. Will be removed in v3.20.
839 - Improved context termination. It is now possible to free resources, even
840 when a process is forcibly killed.
841 - ContextBoost: add support for Boost versions above 1.61.
844 - Bring back run-time option --cfg=exception/cutpath to remove exception
846 - Removed unused functions:
847 - xbt/str.h: xbt_str_split_str(), xbt_str_subst(), xbt_str_ltrim(),
848 xbt_str_rtrim(), xbt_str_trim().
849 - xbt/xbt_os_thread.h: xbt_os_thread_cancel(), xbt_os_thread_detach().
852 - Removed header files obsolete since SimGrid 3.12:
853 msg/datatypes.h, msg/msg.h, simdag/datatypes.h, simdag/simdag.h.
855 - #3: SD_exit should be made optional
856 - #120: Memory leak when the processes are forcefully killed
857 - #159: Threading test regression in Actor refcounting
858 - #170: simgrid::s4u::Comm::wait_any() returns too many comms
859 - #185: simgrid::s4u::Engine::instance()->shutdown() segfaults
860 - #186: Actor::killAll() segfaults if some process is blocked on wait()
861 - #191: VM migration and pstate
862 - #192: Updating the energy consumptions of all hosts crashes with VMs
863 - #195: All actors have PID=0 in the logs
864 - #204: Sometimes segfault with thread contexts and mmap privatization
865 - #222: Actor::kill() doesn't really kill and segfaults
866 - #225: Actor::kill() doesn't really kill when victims are doing a join()
868 ----------------------------------------------------------------------------
870 SimGrid (3.16) Released June 22. 2017.
872 The Blooming Spring Release: developments are budding.
875 - FreeBSD: Disable SMPI mmap privatization, switch automatically to dlopen.
876 - Mac, BSD: dlopen+thread broken, switch automatically to raw contexts.
877 - Java JAR file should be finally fully working on Mac OSX too.
879 XML platforms: Switch to platform v4.1 format.
880 * This is (mainly) a backward compatible change: v4 are valid v4.1 files
881 - <zone> can be used as a synonym for the now deprecated <as>
882 - <zoneRoute> can be used as a synonym for the now deprecated <asroute>
883 - <bypassZoneRoute> an be used as a synonym for the now deprecated <bypassAsRoute>
884 - <actor> can be used as a synonym for the now deprecated <process>
885 - state_file and avail_file periodicity is now easier to express
886 (check the documentation) the old behavior should still work.
887 * Storage: not backward compatible, but it seems that nobody ever used it
888 - Remove attribute 'content_type' of <storage_type>: was never used
889 - Make attribute 'model' of <storage_type> optional: for future usage
890 - Remove Bconnection model property: was never (in)validated. Replaced by
891 the maximum of the read and write bandwidth as a resource constraint.
894 - New and Backwards Compatibility break:
895 SD_simulate_with_update (double how_long, xbt_dynar_t changed_tasks_dynar)
896 When one wants to get the list of tasks whose states have changed during a
897 simulation round, s/he has to allocate and free a dynar and use it as
898 argument to this function. The former SD_simulate (double how_long)
902 - Allow multicore VMs, with the correct sharing (unless you overcommit)
903 BUG: vCPU overcommitting still leads to buggy sharing, though. WIP.
906 - New function to update the consumption of all hosts at once.
907 - Fix the model for multi-core hosts, linear in the amount of busy
908 cores with an abnormality for pIdle (see paper).
909 BUG: Still not satisfactory for ptask on mono-cores.
912 - The netzone are now available from the MSG API.
913 The old names still work, but are now deprecated.
916 - New algorithm to privatize globals: dlopen, with dynamic loading tricks
917 - New option: smpi/keep-temps to not cleanup temp files
918 - New option: smpi/shared-malloc-blocksize . Relevant only when global shared
919 mallocs mode is used, allows to change the size of the fake file used
920 (default 1MB), to potentially limit the number of mappings for large runs.
921 - Support for sparse privatized malloc with SMPI_PARTIAL_SHARED_MALLOC()
922 - Fortran ifort and flang compilers support
923 - New RMA calls supported (experimental):
924 - MPI_Win_allocate, MPI_Win_create_dynamic, MPI_Win_attach
925 - MPI_Win_detach, MPI_Win_set_info, MPI_Win_get_info
926 - MPI_Win_lock_all, MPI_Win_unlock_all, MPI_Win_flush
927 - MPI_Win_flush_local, MPI_Win_flush_all, MPI_Win_flush_local_all
928 - MPI_Op_commutative, MPI_Fetch_and_Op, MPI_Compare_and_swap
929 - MPI_Rput, MPI_Rget, MPI_Raccumulate, MPI_Rget_accumulate
932 - New: this_actor::isMaestro() returns whether we are in kernel mode.
933 - Behind the scene, ActivityImpl are now automatically refcounted.
934 Removing this nasty bottleneck will greatly simplify our internals.
937 - Replay: New function xbt_replay_action_get():
938 Retrieve the function previously associated to an event type.
939 - DROPPED FUNCTION: xbt_str_varsubst()
940 - DROPPED MODULE: strbuff. We don't need it anymore.
941 - DROPPED MODULE: matrix. We don't need it anymore.
942 - DROPPED MODULE: lib. We don't need it anymore.
944 -- Thu Jun 22 22:48:12 CEST 2017 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
946 SimGrid (3.15) Released March 22. 2017
948 The Spring Release: continuous integration servers become green
949 We fixed even the transient bugs on all target architectures:
950 Linux (CentOS, Debian, Ubuntu, Fedora), Mac OSX (Mavericks, El Capitan)
951 Windows, FreeBSD, NetBSD.
953 - Rename NetCards to NetPoints.
954 This was intended to help NS3 users, but that's not a netcard.
955 That's a point in the routing algorithm, let's avoid wrong simplifications.
958 - New: MSG_process_yield(). Stop and yield to other processes.
959 - New: MSG_process_daemon(). Daemon processes are automatically killed
960 when the last non-daemon process terminates
961 - New: MSG_process_ref/unref(). Fiddle with the process refcounting.
962 - Renamed MSG_energy_plugin_init() -> MSG_host_energy_plugin_init()
963 to make room for the upcoming network energy plugin.
964 - Drop MSG_host_get_current_power_peak: duplicates MSG_host_get_speed
967 - Ensure that an actor can kill itself with Process::exit()
968 - Kill the obscure NativeException. Nobody want to survive the issues
969 it denotes, so use JniException that is a RuntimeException (not to
970 be caught explicitly).
971 - Partial bug fix in initialization. SimGrid flags on command line were
972 consumed at C level but stayed in the original Java String[] args.
973 This could mess users' args[i] if SG flags were not put at the end of
975 The SimGrid flags are now removed from the Java arguments. However,
976 the number of arguments REMAINS UNCHANGED. It is then UNSAFE to test
977 if args.length is greater than the number of YOUR OWN ARGUMENTS.
978 It might be if you have --log or --cfg flags in the command line.
979 - Fix numerous memleaks all around the place. In particular, around VMs.
983 - s4u::onPlatformCreated: right before the simulation starts
984 - s4u::onSimulationEnd: right after the main simulation loop
985 - s4u::onTimeAdvance: right after a clock change (time is discrete)
986 - s4u::Host::onSpeedChange: when the pstate is changed, or when an
987 event from the availability_file changes the avail speed.
988 - Links are now usable from s4u
989 - New: Engine::hostList() and Engine::hostCount(). Still clumsy.
990 - New: Actor::suspend(), Actor::resume(), and Actor::migrate(new_host)
991 - New examples: The conversion of MSG examples to S4U has begun
992 - Actors: create, kill, migration, and suspend
993 - Applications: master-worker and token-ring
994 - Action replay: communications and storage
995 - Drop Host::getPstateSpeedCurrent() which duplicates Host::speed()
998 - Backwards Compatibility breaks
999 - The SD_route_get_list and SD_route_get_size functions have been removed.
1000 They are replaced by the unique
1001 void sg_host_route(sg_host_t src, sg_host_t dst, xbt_dynar_t links)
1002 The route from src to dst is built in the links dynar whose size can
1003 be obtained with xbt_dynar_length.
1004 - The SD_route_bandwidth and SD_route_latency functions have been replaced by
1005 sg_host_route_bandwidth and sg_host_route_latency.
1006 Macros ensure the backwards compatibility, but you should fix your code
1009 - Major C++ rewrite ongoing (SMPI used to be C compiled in C++).
1010 This can break codes using SMPI internals (from private.h instead of the public smpi.h).
1011 - Bump our claim of support from MPI 1.1 to MPI 2.2.
1012 We don't support 100% of it, but it should be enough. Contact us if not.
1013 - MPI_Win_lock/unlock, MPI_Get_accumulate support added (as for all RMA, implementation is
1014 naive and probably inaccurate)
1015 - New algorithm for SMPI_SHARED_MALLOC: global, where all blocks are
1016 mapped onto a unique small file using some system magic.
1017 - Bugfix: smpirun was sometimes misusing hostfile when wrongly terminated
1018 - Fortran: cleanups, fixes, support of user-added operations
1019 - RMA: MPI_Accumulate are applied in correct order.
1020 - RMA: MPI_Win_{complete/post} shouldn't miss messages anymore.
1021 - Better support for MPI_IN_PLACE
1022 - Support for MPI_Win attrs and keyvals.
1023 - Support MPI_Comm_group_create, MPI_Type_size_x
1024 - MPI ops should be properly applied to all allowed types
1025 - Replace implementation of MPI_Bcast "scatter followed by rdb allgather"
1026 algorithm by a non failing one from mpich.
1029 - Kill the fifo data container: we don't use it anymore.
1032 - A <cluster> can now be created with different speed values to represent pstates.
1033 see examples/platforms/energy_cluster.xml for an example.
1035 SimGrid (3.14.159) Released December 28. 2016
1037 The previous release was only a crude approximation of a Pi release;
1038 this one should be a bit better.
1040 - Revert a last minute change that broke on Mac OSX.
1041 - Fix the changelog and NEWS files.
1042 - Improve the documentation, in particular of the routing module.
1043 - Integrate some patches flying around in Debian.
1045 SimGrid (3.14) Released December 24. 2016
1048 * The whole documentation was reworked and reorganized. There is
1049 still much room for improvement here, but we're on it.
1052 * We now need python3 for our testing infrastructure.
1053 * Model checking needs libevent
1056 * Now works on FreeBSD
1059 * Privatization now works on FreeBSD
1061 * Privatization is now activated by default in smpirun
1062 You can turn it off with -no-privatize if something goes wrong.
1064 * Call-location tracing for SMPI.
1065 You can add the exact location (filename / linenumber) of an MPI call to
1066 your trace files and slow down or speed up the simulation between two
1067 consecutive calls by using an adjustment file (see the documentation).
1069 * Fixed computation of timings for MPI_Send, MPI_Recv & possibly also others
1070 We've found a bug that prevented SMPI to account for MPI_Send, MPI_Recv
1071 and others (in some cases) in a correct way. That is, the smpi/os, smpi/or
1072 values were ignored in some cases. The timings of these functions can now
1073 be significantly different.
1075 * smpi/cpu-threshold:-1 should become smpi/simulate-computation:no
1076 smpi/running-power is renamed to smpi/host-speed
1078 * smpi/grow-injected-times option to enable or disable multiplication of the
1079 timings injected in MPI_Iprobe, or MPI_Test. Enabled by default, which can
1080 make simulation less precise (but also much faster).
1082 * smpirun script should be (much) faster for large deployments.
1084 * SMPI tracing: fixed issue with poor matching of send/receives.
1086 * Replay: Fix broken waitall
1088 New functions and features
1089 * MSG_parallel_task_execute_with_timeout, to timeout computations.
1091 Dropped / renamed functions and features
1092 * msg_mailbox_t and associated functions. Use s4u::Mailbox instead.
1093 - MSG_mailbox_is_empty() -> Mailbox::empty()
1094 - MSG_mailbox_front() -> Mailbox::front()
1095 - MSG_mailbox_get_by_alias() -> simgrid::s4u::Mailbox::byName(name)
1096 - MSG_mailbox_get_task_ext() -> MSG_task_receive_ext()
1097 - MSG_mailbox_get_task_ext_bounded -> MSG_task_receive_ext_bounded
1098 - MSG_host_(get/set)_params -> MSG_vm_(get/set)_params
1099 * Don't pass the free_f parameter to property related functions:
1100 - MSG_host_set_property_value()
1101 - MSG_as_router_set_property_value()
1102 - MSG_storage_set_property_value()
1103 * VM properties. Since msg_vm_t are msg_host_t, just use
1104 MSG_host_get_property_value() and friends
1105 * VM I/O related things:
1106 - Ignored parameter of vm_create: core_nb, disk_path and disk_size.
1107 - Unimplemented save/restore methods
1108 * MSG_as_router_get_property_value() was redundant with
1109 MSG_environment_as_get_property_value().
1110 - Removed MSG_as_router_*propert*() functions
1111 - Added MSG_environment_as_set_property_value() for consistency
1112 * xbt heterogeneous dictionaries (created with xbt_dict_new()).
1113 Well, they are still there for now, but deprecated with a warning.
1114 Please switch to xbt_dict_new_homogeneous() before this is removed
1116 * Task affinity. Its intended behavior (that was very badly tested
1117 and probably not really working) was deceiving what most users
1118 would have hoped here.
1119 * xbt_os_sem_get_value: unused internally, deprecated on OS X El Capitan
1120 * Option network/coordinates is now useless and should be dropped.
1123 * Added option storage/max_file_descriptors to allow more than 1024 files opened
1126 * Added option maxmin/concurrency_limit to allow more than 100 processes per host
1127 * Added Dragonfly topology support
1130 * Add Exa- and Peta- units such as EiB, EB, Eib, Eb for size, and
1131 EiBps, EBps, Eibps, Ebps for bandwidth.
1132 They may become useful to some lucky ones.
1135 * New functions: msg.Comm.waitAll() and msg.Comm.waitAny()
1136 * ex/app_tokenring: new example, very similar to the MSG Token Ring
1137 * ex/async_waitAll: new example, on asynchronous communications
1140 * Memory usage should be decreased for simulations with a large number
1141 of processes. This also helps for SMPI.
1143 SimGrid (3.13) stable; urgency=low
1145 The Half Release, a.k.a. the Zealous Easter Trim.
1147 - We removed half of the lines, that were mostly experimental cruft.
1148 v3.12 lasted 286000 lines of code, v3.13 is only 142000 lines
1149 (not counting blanks and comments -- according to openhub.net)
1150 - The internals are now compiled in C++ (and will soon be clean C++)
1151 - We removed 75 klines of XML, 12 klines of Java, 5 klines of cmake,
1152 59 klines of C, etc. We added only 29 klines of C++ in replacement.
1154 * Backwards Compatibility breaks
1155 - Removed Lua simulation bindings (switch to C or Java for that).
1156 Lua can still be used to describe platforms
1157 - Removed Java kernel plug-ins.
1158 Will be reintroduced after the ongoing major internals reorg.
1160 - the following functions were removed.
1161 They were too specific and should be reimplemented in a generic
1162 way, with filter function.
1163 - MSG_task_listen_from_host
1164 - MSG_mailbox_get_count_host_waiting_tasks
1165 - MSG_mailbox_put_with_timeout was removed.
1166 Please use MSG_task_send_with_timeout instead.
1168 - the SD_application_reinit function was removed. It has been a noop for a while.
1169 - The ACCESS_MODE of SD_workstation has been removed. This feature was not really usable and should soon be
1170 replaced by a more flexible mechanism.
1171 - The following functions thus do not exist anymore
1172 - SD_workstation_get_access_mode
1173 - SD_workstation_set_access_mode
1174 - SD_workstation_get_current_task
1175 - Basic estimation functions have been removed but can easily be replaced
1176 - SD_route_get_communication_time => SG_route_get_latency() + amount / SD_route_get_bandwidth()
1177 - SD_workstation_get_computation_time => amount / sg_host_speed()
1179 - VM.setBound(int load) is now VM.setBound(double bound) to meet the MSG semantics.
1180 Use VM.getSpeed()*load/100 for the legacy behavior.
1182 - option enable_tracing was removed. It was not doing anything for a while.
1183 - In the ModelChecker:
1184 - the model-checker now ptraces the model-checked process which means
1185 you cannot use a debugger on the latter anymore (we might make this
1186 optional in the feature);
1187 - removed soft-dirty page tracking;
1188 - remove model-checked side snapshot management,
1189 MC_snapshot() and MC_compare_snapshot();
1190 - keep the MC_cut() function as a stub (it was not really working
1191 in the previous release).
1194 * All options are consistently in kebab-case. Old names are kept as alias.
1197 * Switch to platform v4 format.
1198 - Rename from 'power' to 'speed' the attributes describing the amount of
1199 flops that a <host>, <peer>, <cluster> or <cabinet> can deliver per second.
1200 - In <trace_connect>, attribute kind="POWER" is now kind="SPEED".
1201 - In <host> and <link>, attributes availability and state are gone.
1202 It was redundant with state and availability traces, and with peak values.
1203 - In <cluster>, attributes availability_file and state_file are gone.
1204 It was too complex and unused.
1205 - Kill <gpu>. Was not doing anything.
1206 - The DOCTYPE points to the right URL:
1207 http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd
1208 (the file at this address now documents the changelog since its v1)
1209 - A warning is emitted for unit-less values (they are still accepted).
1210 - speed. Default: 'f' or 'flops'. Also defined:
1211 'Yf', 'Zf', 'Ef', 'Pf', 'Tf', 'Gf', 'Mf', 'kf'
1212 'yottaflops', 'zettaflops', 'exaflops', 'petaflops', 'teraflops', 'gigaflops', 'megaflops', 'kiloflops'
1213 - bandwidth. Default: 'Bps' bytes per second (or 'bps' for bits but 1 Bps = 8 bps)
1214 Also defined in bytes: 'TiBps', 'GiBps', 'MiBps', 'KiBps', 'TBps', 'GBps', 'MBps', 'kBps', 'Bps'
1215 And the same in bits: 'Tibps', 'Gibps', 'Mibps', 'Kibps', 'Tbps', 'Gbps', 'Mbps', 'kbps', 'bps'
1216 - latency. Default: 's' second. Also defined:
1217 'w' week, 'd' day, 'h' hour, 'm' minute, 'ms' millisecond, 'us' microsecond, 'ns' nanosecond, 'ps' picosecond
1219 * bin/simgrid_update_xml can upgrade your files automatically (won't convert unit-less values)
1220 tools/sg_xml_unit_converter.py may help (but it's just a warning and will probably ever be).
1223 * s4u::Host is now the preferred public interface to the Host features.
1224 sg_host_* functions are C bindings to the exact same behavior
1225 MSG_host_* and SD_workstation_* are #define to the sg_host_* ones
1228 * The examples were completely reorganized (in C and Java), for your browsing pleasure.
1229 * Kill all deprecated functions (the ones you had when declaring MSG_DEPRECATED).
1230 They were deprecated since a few years, and probably did not even compile anymore.
1233 * The API has been profoundly modified to directly use the core objects instead of redefining its own.
1234 SD_Workstation_t and SD_link_t are now sg_host_t and sg_link_t respectively.
1235 Some functions have also been renamed for consistency. Backward compatibility is maintained, but users are
1236 encouraged to update their codes. A list of the modified functions can be found at the end of
1237 include/simgrid/simdag.h
1240 * simgrid::simix::kernelImmediate() is the closure callback. It ensures that
1241 the lambda or closure passed as a parameter will run in kernel mode.
1242 All the callback functions should be rewritten to that interface at some point.
1245 * Reorganizing and cleaning the internals all around the place.
1248 * Remove old default barrier/bcast buggy algorithms (see #18407)
1249 * Various bug fixes to handle more codes
1250 * Remove the need for the --foreground option of smpirun (it is still
1251 accepted for backward compatibility).
1254 * Kill the setset data container: MC don't use it anymore.
1255 * Kill the queue data container: it made more sense with GRAS.
1256 * Kill the xbt_peer_t data type: it's useless without GRAS.
1257 * Kill rm_cb feature of config sets: it was never useful.
1258 * Kill graphxml parsing feature. It was not used.
1259 * Kill the deprecated code protected by XBT_USE_DEPRECATED
1261 - xbt_dynar_sort_strings(), when the content is char*
1262 - xbt_str_parse_int / xbt_str_parse_double, wrapping strtol/strtod
1263 They throw exceptions on invalid input;
1264 * C++ support for declaring CLI flags (simgrid::config::Flag);
1265 * class for abstracting different signal backends (simgrid::xbt::signal).
1266 with no external dependencies (we need very simple signals).
1269 * refactoring and cleanup of the code;
1270 * ongoing process to cleanly separate the model-checking algorithms
1271 from the code model-checking support.
1273 -- Wed Apr 27 21:00:53 CEST 2016 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1275 SimGrid (3.12) stable; urgency=low
1277 The Facelift Release.
1280 * Require g++ v4.7 at least to not speak prehistorical C++.
1281 * Require Boost 1.48 (for signal2 component).
1282 * Java must be version 7 at least when activated.
1283 * Builds on Windows again (including Java bindings).
1284 * Tracing is now always enabled (no way to turn it out)
1285 * Remove GTNetS. It was not working anyway.
1286 * Various cleanups in the cmake scripts.
1287 * Move headers around to sort them out on installed systems:
1288 - instr/instr.h -> simgrid/instr.h
1289 - instr/jedule/* -> simgrid/jedule
1290 - simdag/datatypes.h was removed
1291 - simdag/simdag.h -> simgrid/simdag.h
1292 - msg/datatypes.h was removed
1293 - msg/msg.h -> simgrid/msg.h
1296 * Interface improvement:
1297 - Rename MSG_host_is_avail(h) to MSG_host_is_on(h)
1298 - Sanitize the interface in MSG_task_ module:
1299 - Merge two functions that were close enough but misleading:
1300 set_compute_duration(t) -> set_flops_amount(t)
1301 get_remaining_computation(t) -> get_flops_amount(t)
1302 - set_data_size(t) -> set_bytes_amount(t)
1303 get_data_size(t) -> get_bytes_amount(t)
1304 - Massive cleanups in the functions related to the energy
1305 - MSG_host_get_pstate_number() -> MSG_host_get_nb_pstates()
1306 - New: MSG_host_get_pstate()
1308 - msg/energy/onoff: switching hosts on and off
1310 * Interface improvement:
1311 - Rename Host.isAvail() to Host.isOn()
1312 - Rename Process.currentProcess() to Process.getCurrentProcess()
1313 - Rename Task.setDataSize() to Task.setBytesAmount()
1314 - Merge Task.getRemainingDuration() and Task.getComputeDuration() into Task.getFlopsAmount()
1316 - #18874: Actually allows the GC to reclaim tasks
1320 - SIMIX_process_throw: raises an exception in a remote process
1321 * Refactoring: Separate sub-modules
1322 - libsmx: the public interface, as libc in a real system
1323 - popping: the strange dance that converts a user request into a kernel handling
1324 - smx_context_*: the virtualization mechanisms that embed the user code
1325 - smx_*: the handling of each simcalls
1326 * Interface cleanup:
1327 - simcall_host_set_power_peak_at -> simcall_host_set_pstate
1328 * Rename smx_action_t into smx_synchro_t, making explicit that these
1329 things are used to synchronize processes with their environment.
1330 For example, a communication is a sort of synchronization involving
1331 the communicating processes (that may block until the exchange) and
1332 the platform. The same can be said from computations, etc.
1334 - #18888: segfault when a process ends before its kill_time
1338 - 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.
1339 - MPI_Keyval*, MPI_Attr* functions, as well as MPI_Comm_attr*, MPI_Type_attr* variants (C only, no Fortran support yet)
1340 - MPI_Type_set_name, MPI_Type_get_name
1341 - MPI_*_c2f and MPI_*_f2c functions
1342 - MPI_Info_* functions (beware, get_nthkey may not follow the insertion order)
1343 - MPI_Pack, MPI_Unpack and MPI_Pack_size functions
1344 - Activate a lot of new tests from the mpich 3 testsuite
1346 - Constant times can be injected inside MPI_Wtime and MPI_Test through options smpi/wtime and smpi/test
1347 - InfiniBand network model added: Based on the works of Jerome Vienne
1348 http://mescal.imag.fr/membres/jean-marc.vincent/index.html/PhD/Vienne.pdf
1349 - When smpi/display_timing is set, also display global simulation time and application times
1350 - Have smpirun, smpicc and friends display the simgrid git hash version on --git-version
1351 * Collective communications
1352 - 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
1353 - 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/).
1354 - Support for Rabenseifner Reduce/Allreduce algorithms (https://fs.hlrs.de/projects/par/mpi//myreduce.html)
1356 - Replay now uses algorithms from wanted collective selector
1357 - Replay can be used with SMP-aware algorithms
1358 - Memory occupation of replay should now be contained (temporary buffers allocated in collective algorithms should be shared between processes)
1359 - 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.
1361 - [#17799]: have mpi_group_range_incl and mpi_group_range_excl better test some corner cases
1362 - Correctly use loopback on fat-tree clusters
1363 - Asynchronous small messages shouldn't trigger deadlocks anymore
1364 * Energy/DVFS cleanup and improvement
1365 - smpi_set_host_power_peak_at() -> smpi_set_host_pstate()
1366 - new: smpi_get_host_pstate()
1369 - "Full" network optimization flag was broken since Surf++
1370 - Better handling of precision flags in maxmin
1371 - Fix bug causing sometimes "Impossible" errors
1372 - Properly pass cluster properties to included hosts
1373 * Improvement of the Energy plugin.
1374 - Always update the consumption before returning that value
1375 - New property: watt_off to denote the dissipation when the host is off
1376 - New functions getWattMinAt and getWattMaxAt to retrieve the
1377 dissipation of pstates that we are not currently at.
1378 * Java: class NetworkLink renamed to Link
1379 * New function: simcall_process_get_kill_time()
1380 * Massive rename s/workstation/host/
1381 - That's intrusive, but that's good for the project consistency. Sorry.
1382 - Change config option "workstation/model" into "host/model"
1385 - Add a xbt_heap_update function, to avoid costly xbt_heap_remove+xbt_heap_insert use
1386 - Add a xbt wrapper for simcall_mutex_trylock (asked in [#17878])
1387 - Add two new log appenders: rollfile and splitfile. Patch by Fabien Chaix.
1388 - xbt_dirname and xbt_basename for non-POSIX systems
1390 * The model checker now runs as a separate process.
1391 * The model checker runs must now be launched with the new simgrid-mc program.
1392 * Record/Replay: the MC can display a textual representation of a path in the
1393 execution graph. It can then be replayed outside of the model checker.
1395 -- Mon Oct 12 06:02:41 CEST 2015 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1397 SimGrid (3.11) stable; urgency=low
1402 * Normalizing pointers addresses tool for better diff between logs
1405 * Add cloud examples using new VMs
1406 - examples/msg/cloud/two_tasks_vm.tesh
1407 - examples/msg/cloud/simple_vm.tesh
1408 - examples/java/cloud/cloud.tesh
1409 - examples/java/cloud/migration/migration.tesh
1410 * Add java surf examples:
1411 - examples/java/surfPlugin/surf_plugin.tesh
1412 - examples/java/reservationSurfPlugin/reservation_surf_plugin.tes
1413 - examples/java/surfCpuModel/surf_cpu_model.tesh
1414 * Add SMPI+MSG example:
1415 - examples/smpi/smpi_msg_masterslave/
1420 - msg task destroy cancel test
1421 - msg_host on/off test
1422 * Move all tests in testsuite to teshsuite (adding tesh files)
1423 * Restructure teshsuites
1424 - one folder for each kind of test
1425 * Restructure AddTests.cmake
1427 - structure the order of tests (with sections)
1430 * Add virtual machine
1431 - creation of a VM on a PM
1432 - migration of a VM from a PM to another PM
1434 - MSG_process_join(msg_process_t process, double timeout)
1435 - msg_bar_t MSG_barrier_init(unsigned int count)
1436 - int MSG_barrier_wait(msg_bar_t barrier)
1437 - void MSG_barrier_destroy(msg_bar_t barrier)
1438 - msg_as_t MSG_environment_as_get_by_name(const char * name)
1439 * New option "msg/debug_multiple_use" to help debugging when a task is used
1442 - Improvements and finalization of MSG_storage, MSG_file APIs and their
1444 - Increase code coverage in test suites
1448 * Protect context stacks against stack overflow. The number of protected memory
1449 pages allocated on the top of each stack (1 by default) can be configured
1450 with the new command line option --cfg=contexts/guard_size:<value>.
1451 * Simcalls are now generated by a python script that
1452 - generates files included by SimGrid
1453 - checks that all the functions exist, and proposes prototypes
1455 - remove sem_destroy, file_set_data, comm_destroy, vm_set_state,
1456 host_set_data, host_get_data
1458 - simcall_process_join(smx_process_t process, double timeout)
1459 * Fix bug where sleeping processing could not be suspended.
1462 * Translate surf models from C to C++
1463 - Generic classes for all models: Model, Resource, Action
1464 - A generic interface for each kind of model (CPU, Network, Storage
1465 Workstation, WorkstationVM)
1467 * Translate surf routings from C to C++
1468 * Add callbacks using sigc++ or boost::signals2
1469 - Add callback functions for resource creation/destruction
1470 - Add callback functions for action state change
1471 - Handle Energy as a plugin
1472 * Replace swag by boost::intrusive
1473 * Add new routing models for clusters. For documentation, see
1474 http://simgrid.gforge.inria.fr/simgrid/latest/doc/platform.html#pf_cluster
1475 - tori, with topology="TORUS" and topo_parameters="ndim1,ndim2,...,ndimn"
1476 parameters for cluster tag
1477 - Fat trees, with topology="FAT_TREE" and
1478 topo_parameters="h;m1,...,mh;w1,...,wh;p1,...,ph" parameters for cluster tag
1479 - see examples/platforms/torus_cluster.xml and
1480 examples/platforms/fat_tree_cluster.xml
1481 * More documentation
1484 * Hostfiles support host:nb_processes construct to deploy several processes on
1486 * Collective communication algorithms should not crash if used with
1487 improper number of nodes and report the error.
1488 * SMPI now partially supports MPI_Topologies: MPI_Cart_create, MPI_Cart_shift,
1489 MPI_Cart_rank, MPI_Cart_get, MPI_Cart_coords, MPI_Cartdim_get,
1490 MPI_Dims_create, MPI_Cart_sub are supported.
1491 * New interface to use SMPI programmatically (still depends on MSG for
1492 some parts, see examples/smpi/smpi_msg_masterslave):
1493 - SMPI_app_instance_register(const char *name, xbt_main_func_t code,
1497 * Global variables privatization in MPI executables is now performed at runtime
1498 with the option smpi/privatize_global_variables (default:no).
1499 Limitations: Linux/BSD only, with mmap enabled. Global variables inside
1500 dynamic libraries loaded by the application are not privatized (static
1501 linking with these libraries is advised in this case)
1504 * Options defined in XML work correctly now.
1507 * New cmake option, enable_lib_in_jar, to control whether native libraries are
1508 copied into simgrid.jar or not (ON by default). Use this option if you want
1509 to reduce the size of the installed simgrid.jar, *and* the native libraries
1510 are kept installed elsewhere.
1511 * Surf binding with SWIG (code generated in maintainer mode only):
1512 - plugin to handle callbacks
1513 - CPU model only for the moment
1516 * Supernovae build mode is definitively removed. It was used to improve
1517 inlining and inter-module optimizations. It is nowadays superseded by
1518 link-time optimizations commonly available in compilers.
1519 * Update ns-3 find lib. Bindings for ns-3 should work again now.
1520 * Add boost dependency for surf++
1521 * Add new macro for tests
1522 - ADD_TESH(name <tesh_args>)
1523 - ADD_TESH_FACTORIES(name "thread;ucontext;raw" <tesh_args>)
1527 - xbt_bar_t XBT_barrier_init(unsigned int count)
1528 - int XBT_barrier_wait(xbt_bar_t barrier)
1529 - void XBT_barrier_destroy(xbt_bar_t barrier)
1530 * Make the xbt_os_time module public
1532 -- Sat May 31 22:39:38 CEST 2014 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1534 SimGrid (3.10) stable; urgency=low
1536 The Clean Diaper Release, a.k.a. SimGrid is leak-free.
1539 * Reintegrate Java to the main archive as desynchronizing these
1540 package is not acceptable anymore (Java is now considered stable)
1541 * Add explicit synchronization facilities through semaphores
1542 * Bug fix: Task.setDataSize() only changed the C world, not the value
1543 cached in the Java world
1546 * Dramatically change the way files are handled. API and internals changed, but
1547 this part of MSG was not considered as production grade either.
1548 * Add explicit synchronization facilities through semaphores
1549 * Add a new function MSG_host_get_process_list()
1550 * Preliminary DVFS support (see examples/msg/energy/ for details)
1553 * SMPI is now included directly in the libsimgrid as the windows
1554 linker doesn't force us on splitting it anymore.
1555 * Improvements of the SMPI replay tool:
1556 - Most of the collective communications are now rooted in the same process as
1557 in the original application.
1558 - Traces now rely on the same MPI data type as the application (MPI_BYTE was
1559 used until now). Multiple data types can now be used in a trace.
1560 - The replay tool now supports traces produce either by TAU or a modified
1562 - Bug Fix: the compute part of the reduce action is now taken into account.
1563 - Gatherv collective is now supported
1564 - SimGrid (SMPI for now) can generate replay traces as well. Option -trace-ti
1565 of smpirun outputs time independent traces for the current run. One file
1566 is created per process. If too many processes are simulated, this behavior
1567 can be changed to one file for all processes by using the
1568 tracing/smpi/format/ti_one_file flag
1569 * smpirun generates the host file if needed (with given host count and platform)
1570 * Integration of more than 100 STAR-MPI, MPICH, OpenMPI collective algorithms
1571 - allows to select one in particular with --cfg=smpi/coll_name:algorithm
1572 - allows to use the decision logic of OpenMPI(1.7) or MPICH(3.0.4) by setting
1573 --cfg=smpi/coll_selector:(mpich/ompi)
1574 * Support for new functions: MPI_Issend, MPI_Ssend, Commutative operations in
1576 * Add a --cfg:tracing/smpi/internals option, to trace internal communications
1577 happening inside a collective SMPI call.
1578 * Fix the behavior of complex data types handling.
1579 * Make MPI_Wtime another synchronization point to take computations into
1581 * Replace MPICH-1 test suite by the one from MPICH 3.0.4. Can be built using
1582 enable_smpi_MPICH3_testsuite flag in cmake. Run with ctest.
1583 * Add all missing Fortran bindings, SMPI should work with Fortran 90
1584 (no privatization of global variables yet)
1585 * Preliminary DVFS support (see examples/smpi/energy/ for details)
1588 * Verification of liveness properties is now available for SMPI applications
1589 (in addition to MSG applications)
1590 * Bugged examples using SMPI in examples/smpi/mc/
1591 * Add --cfg=model-check/visited option. Allows the verification of infinite
1592 programs. Detection of loops in the execution thanks to the system state
1593 comparison and reduction of the state space to explore. Can be combined with
1594 DPOR for safety properties.
1597 * Allow to change SimGrid configuration (see --help) within the code
1598 thanks to SD_config() as it can be done in MSG.
1599 * Add a new function SD_task_set_amount() upon user request.
1602 * Handle units for values (10ms, 10kiloflops, 10Bps, 1GB, ...)
1603 * Remove rule based routing (no more PCRE dependency)
1604 * Add a limiter_link option to cluster tag, to specify a maximum reachable
1605 bandwidth in fullduplex mode when it is less than twice the nominal bandwidth.
1606 * Add a loopback_bw and loopback_lat options to cluster tag.
1607 * Fix the peer tag that could not be mixed with other AS within a Vivaldi
1608 routing. Now peers are encapsulated in an AS and have their own private
1609 router but this is transparent.
1612 * Our own implementation of getline is renamed xbt_getline, and gets
1613 used even if the OS provide a getline(). This should reduce the
1614 configuration complexity by using the same code on all platforms.
1615 * New type: xbt_cfg_elm_boolean.
1616 * Allow to use yes/no for boolean configuration options in the command line.
1617 * Allow to disable SimGrid cleanups at exit from command line option.
1618 There are situations where one may want a simulation to end with an exit.
1619 Unfortunately, calling exit may cause SimGrid to segfault, which is quite
1620 annoying when scripting around the simulator. Adding a
1621 --cfg=clean_atexit:no allows to circumvent this issue.
1624 * Lots of memory leaks were corrected in this release.
1625 There is no known memory leaks anymore, in all of our 600+ tests.
1626 * New command line option --version, to get SimGrid version information.
1627 Packagers may want to add extra words to SIMGRID_VERSION_EXTRA defined in
1629 * Supernovae builds are deprecated, and expected to be removed in the next
1632 -- Sun Nov 17 00:26:44 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1634 SimGrid (3.9) stable; urgency=low
1636 The Grasgory release: GRAS is really dead now.
1638 * Complete overhaul of the internal host structures scheme.
1641 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
1642 was considered as experimental and badly maintained since then.
1643 * Keeping it was thus a trap to our potential users, that could take
1644 it instead of MSG or SMPI by mistake despite is pity state.
1645 * GRAS seems to have very few users (if any), and no one volunteered
1646 to maintain it further. It also induces a lot of XBT code (for
1647 portability sake), that must be maintained too.
1648 * For all these reasons, we killed GRAS. If someone wants to revive it
1649 in the future, don't cry, our git history still remembers of GRAS.
1652 * Major overhaul. Merge our documentation again as time proved that
1653 splitting it was really not helping our users.
1654 * Further improve the developer documentation to help newcomers
1655 hacking on SimGrid itself. The user documentation (and in
1656 particular, the beginner documentation) is still in a sorry state.
1659 * Now works on Windows too!
1660 * Much more extensive test suite, from MPICH
1663 * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
1664 (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
1665 dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
1666 * Bug fix: let task be scheduled when the last dependency to be solved is
1667 a control dependency.
1668 * Remove SD_load_environment_script function.
1669 Use the C sg_platf function if you want to declare a platform
1673 * New function: MSG_process_get_number()
1674 * Old function documented: MSG_config()
1675 * Remove MSG_load_platform_script function
1676 Use the C sg_platf function if you want to declare a platform
1680 * Change the default value of the TCP_gamma constant (maximal size of TCP
1681 congestion window) to a more realistic 4MiB value. If you notice changes in
1682 your simulation results, you can fall back to the previous 20k tiny window
1683 by adding --cfg=network/TCP_gamma:20000 on command line.
1684 * (Hopefully) fix a bug wrt periodic availability and state traces
1685 * Bug fix: use default values at start when first event in availability/state
1686 trace is not at time 0.
1689 * remove the "new_" part of function name sg_platf_new_trace_connect
1690 (resulting in sg_platf_trace_connect), since it does not create
1694 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
1695 use case where it's really mandatory, and maintaining it was a pain in
1697 * New: xbt_fifo_search(), search an item with a user-provided
1698 comparison function instead of dumb pointer comparison.
1701 * Fix the lua deployment:
1702 Use `simgrid.init_application()` before deployment instead of
1703 `simgrid.msg_register_application()` after.
1706 * Transfer the tracing files into the corresponding modules.
1708 -- Tue Feb 5 11:31:43 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1710 SimGrid (3.8.1) stable; urgency=low
1712 The "we are told that some people want to also *install* the simgrid
1715 * Add missing file "tesh.1" to the archive.
1717 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1719 SimGrid (3.8) stable; urgency=low
1721 The Psssshiiiit release: SimGrid jumps into the Cloud.
1724 * Add an experimental interface to manipulate VMs. They are mainly
1725 process groups with very few intrinsic semantic, but they should
1726 allow you to build the semantic you want easily.
1727 * New function: MSG_host_set_property_value()
1728 * New function: MSG_process_on_exit(). To clean memory in all cases.
1729 * Bug fixes that made the host (and link) failures unusable.
1730 * Add a way to auto-restart process when the host in which they are
1731 executing comes back (ON_FAILURE="RESTART" on deployment file,
1732 MSG_process_auto_restart_set).
1733 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
1734 please stop using the old ones, they are DEPRECATED.
1736 * Deprecate functions MSG_global_init() / MSG_global_init_args()
1737 Please use MSG_init() instead. (reducing the amount of entry
1738 points in the library helps us).
1739 * Make it impossible to link against the wrong version of the lib
1740 * Deprecate MSG_clean(). No need to call it anymore.
1741 * Function MSG_get_host_number() is not deprecated anymore.
1744 * Split the doc into a user guide and a reference guide.
1745 * Start a developper guide to help people hacking on SimGrid.
1748 * Enable tracing by default. This modules rocks you should use it.
1749 * Remove option custom_flags. Now use environment variables CFLAGS
1751 * Use default cmake things to detect lua instead of home grown ones.
1752 * New option "enable_mallocators" to disable mallocators, for debugging
1753 purpose ("on" by default).
1756 * Bug fixes around the resource failures: don't let the processes
1757 survive the host they are running onto.
1758 * Add an interface to auto-restart processes when the host in which they are
1759 executing comes back.
1760 * Ensures that SIMIX_clean is called automatically. It's not part of
1761 the public interface anymore (bindings should be updated).
1764 * Bug fix for when SD_Simulate is called with a positive value: be careful
1765 when comparing doubles. Sometimes they are different for non significant
1767 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
1768 parallel task whose initial work is distributed among host according
1769 to the Amdahl's law. Such tasks are created with a parameter alpha
1770 that corresponds to the non-parallelizable part of the computation.
1771 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
1772 between two sets of workstations assuming a 1D block distribution (each
1773 workstation owns a similar share of data) on both sides.
1775 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
1776 Data redistribution will be automatically scheduled once parent and child
1777 are both scheduled. The filling of computation_amount and
1778 communication_amount structures is now done seamlessly thanks to the chosen
1780 * New function SD_workstation_dump to display various information
1781 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
1782 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
1783 bandwidth on the route onto which the task is scheduled and the amount of
1785 To divide the nominal bandwidth by 2, the rate then has to be:
1786 rate = bandwidth/(2*amount)
1787 * Compute tasks that have failed can now be rescheduled and executed again
1788 (from their beginning)
1789 * Increasing source code coverage (src/simdag is now covered at 95.8%
1793 * Re-implement time-independent trace replay using SMPI (at the
1794 smpi_smp_* level) instead of MSG. This should replace
1795 examples/msg/actions/actions.c
1796 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
1797 hindexed and structs)
1798 * Implement the exchange of non-contiguous data.
1799 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
1800 * Correct behavior of smpi/sender_gap and set its default value to 0
1801 * Add option to asynchronously send small messages to allow better
1802 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
1803 specifies the size in bytes under which messages will be asynchronously sent.
1804 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
1805 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
1808 * New C interface to define a platform: XML is now optional.
1809 For more info, please check include/simgrid/platf.h.
1810 * New interface to define random platforms from the C:
1811 For more info, please check include/simgrid/platf_generator.h and
1812 examples/msg/masterslave/masterslave_platfgen.c
1813 * Export a sg_cmdline dynar containing all the arguments we got from
1817 * Two new tracing options for adding comments to trace file so you
1818 can track your experiments (see --help-tracing for details).
1819 * New option to generate a impoverished trace file (--cfg=tracing/basic:1)
1820 * Adding the SimGrid version that generated the trace file as a comment.
1821 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
1822 * Fix to avoid key clashes on Paje links
1823 * Other minor fixes related to the Paje specification
1826 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
1827 and renamed to xbt_str_hash() and xbt_str_hash_ext().
1828 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
1829 * Greatly improve the robustness of mmalloc to user errors (such as
1830 using an area after freeing it, or freeing it twice)
1832 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1834 SimGrid-java (3.8.1) stable; urgency=low
1836 * New module: org.simgrid.trace.Trace (SimGrid trace bindings)
1837 Warning: all methods are visible, but only some of them are
1838 implemented so far. Check the source (src/jtrace.c)
1839 for further information.
1840 * New module: org.simgrid.msg.File (SimGrid File management functions)
1841 * New Module: org.simgrid.msg.VM (SimGrid interface to mimick IAAS clouds)
1842 * Change the meaning of Process.restart: now restart the process from
1843 the beginning, like MSG_process_restart in C.
1844 * Add Process.setAutoRestart: handling of process restart when failed
1846 * Add Process.getProperty, Host.getProperty, Host.getProperty: allows
1847 you to retrieve the properties of the processes/hosts
1848 * Deprecate Msg.clean(): you can just forget about it now.
1849 * New function Process.getCount(), that only works when compiling
1850 with the not yet released version 3.9 of the C library.
1852 * New context factory based on Coroutines. It mandates a modified JVM
1853 but then, the simulations run about five times faster, and there is
1854 no limit to the amount of processes (beside of the available memory).
1856 -- 2012-12-04 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1858 SimGrid (3.7.1) stable; urgency=low
1861 * Restore the prototype of MSG_process_create_with_environment() to
1862 the pre-3.7 situation by removing the kill_time argument.
1863 * Add a MSG_process_set_kill_time() function instead.
1866 * Fix weird behaviors when dealing with parallel tasks.
1869 * Simgrid is now built as a dll.
1870 * Simgrid-java now works on Windows.
1871 * Simgrid-Java is now included into Windows package.
1874 * First pre-build package for MacOSX.
1877 * Fix compilation when using MSG_USE_DEPRECATED.
1878 * Fix some compilation issues on Macs and Windows.
1879 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
1880 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
1882 We discovered that the Lua console is broken, but we are missing the
1883 manpower to fix it right now. The problem existed in 3.7 too, so we
1884 are not blocking the release for that. Sorry if you depended on this
1885 feature, any help would be really welcome.
1887 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1890 SimGrid-java (3.7.1) stable; urgency=low
1892 The "Java aint got to be bloated and slow" release
1895 * Various internal cleanups and performance improvement
1896 Simulations are expected to run up to twice faster or so
1897 * Make Process.kill(process) an instance method, not a static one
1898 * User processes are not java.lang.Thread subclasses.
1899 This breaks the compatibility (sorry), but previous API was
1900 brain-dead, making it impossible to have non-trivial
1901 initializations in the process constructor.
1902 * Require a full constructor per Process sub-class.
1903 Kinda breaks the compatibility (sorry), but this allows a much more
1904 efficient way to launch the processes at simulation startup.
1905 * Do not embeed our version of semaphores, java 1.5 can be considered
1906 as sufficiently prevalent for us to not dupplicate its features.
1910 * Add examples for almost every part of the API
1911 We spotted and fixed a lot of bugs in the process
1913 * New module: asynchronous communication API
1914 * New function: Process.sleep()
1915 It takes milliseconds as argument, just as java.lang.Thread.sleep()
1916 * New module: org.simgrid.msg.Mutex (SimGrid mutexes)
1917 * New module: org.simgrid.msg.RngStream (RngStreams random generators)
1919 -- 2012-06-12 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1921 SimGrid (3.7) stable; urgency=low
1923 The "spring cleanups (before the next Big Project kicks in)" release.
1926 * We can specify the SMPI latency/bandwidth factor with command line
1927 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
1928 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
1929 You can also use the "config tag" from platform file by adding this line
1930 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
1931 (see "example/platforms/tag_config.xml" to use "config tag").
1932 Note that the command line supersedes the platform file configuration.
1933 * Change the correction factors used in LMM model, according to
1934 the latest experiments described in INRIA RR-7821.
1935 Accuracy should be improved this way.
1936 * Use the partial invalidation optimization by default for the
1937 network too. Should produce the exact same results, only faster.
1938 * Major cleanup in surf to merge models and split some optimization
1939 mechanisms from the core of the models. As a result you can now
1940 specify which model to use (e.g., --cfg=network/model:LV08
1941 --cfg=cpu/model:Cas01) and which optimization mode to use
1942 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
1943 Incompatible combinations should err at initialization. See
1944 --help-models for the list of all models and optimization modes.
1945 * The CLM03 workstation model was dropped for simplicity because it
1946 used the deprecated CM02 network model. Use default instead.
1947 * Rename the TCP_gamma configuration option to network/TCP_gamma
1948 * Rename the coordinates configuration option to
1949 network/coordinates, and document it
1950 * Use now crosstraffic keyword instead of the terribly misleading
1951 fullduplex keyword. It is activated by default now in the current
1952 default model, use --cfg=network/crosstraffic:0 to turn it off.
1953 * Ongoing refactoring the model parsing to make XML files optional
1954 See include/simgrid/platf.h for details (still to be completed)
1957 * Major overhaul of the documentation. Almost instructive now :/
1958 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
1959 functions and friends. This interface was considered as
1960 deprecated since over 2 years, it's time to inform our users that it is.
1961 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
1962 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
1963 use these (crappy) functions in your code.
1964 These functions will be removed soon. Stop using them now.
1965 * Deprecate MSG_get_host_{table,number}
1966 Implement MSG_hosts_as_dynar() instead.
1967 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
1968 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
1971 * Stabilize the parallel execution mode of user contexts
1972 * Introduce configuration variables to control parallel execution:
1973 - contexts/synchro: Synchronization mode to use when running
1974 contexts in parallel (either futex, posix or busy_wait)
1975 - contexts/parallel_threshold: Minimal number of user contexts
1976 that must be part of a scheduling round to switch to parallel
1977 execution mode (raw contexts only)
1978 * Fix bugs that prevented to use suspend/resume along with
1979 synchronization structures.
1980 * Fix bugs in process termination that lead to invalid memory access
1981 in very specific conditions.
1984 * Introduce a parallel mode for the models (controlled by surf/nthreads
1985 configuration item). In our tests, running the models in parallel
1986 never lead to any speedups because they are so fast that the gain
1987 of computing each model in parallel does not amortizes the
1988 synchronization costs, even when ultra fast futexes are used.
1989 This is released anyway because YMMV.
1992 * Performance boost by using a swag internally to compute the set of
1993 tasks that are finished and should constitute the return value of
1997 * Enable it by default now that it is considered rather stable.
2000 * Documentation of the tracing functions.
2001 * Performance gains when tracing categorized/uncategorized resource
2002 utilization by avoiding calls to get route when updating resource
2003 variables. LMM constraints are being used instead.
2004 * API changed to set task categories. Use MSG_task_set_category instead
2005 of TRACE_msg_set_task_category, and SD_task_set_category instead
2006 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
2007 * Bugfix for graphicator, routes not correctly obtained, memory leaks
2008 * Examples for link user variables added (see at examples/msg/tracing/)
2009 * Deprecated function TRACE_msg_set_process_category completely removed
2010 * Trace header updated according to the latest Paje file format
2011 * Tracing network lazy updates, no longer obligate users to use full updates
2012 * --cfg=tracing/platform:1 also registers power/bandwidth variables
2013 * Experimental: let user code declare/set/push/pop application states for hosts
2014 * API changed to allow the manual creation of graph configuration files
2015 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
2018 * Improve the API of Lua MSG bindings, using the Lua spirit.
2019 * Each simulated process now lives in its own Lua world (globals are
2020 automatically duplicated). It helps writing simulators. Will allow
2021 to run Splay programs within SimGrid in the future.
2022 * Add a Chord example in Lua, equivalent to the MSG one.
2025 * Start the implementation of a solution to express temporal
2026 properties, not only local assertions. This is still an
2027 experimental work in progress, stay clear from it to be safe.
2031 - Add new runtime parameters --help-logs and --help-log-categories
2032 to display information about supported logging parameters and
2034 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
2035 don't exists anymore.
2036 * Mallocators: allow value NULL for the reset function.
2038 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
2039 create homogeneous dictionaries, where all the elements share the
2040 same free function. Non homogeneous dictionaries will be
2041 deprecated in the next release.
2042 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
2043 - Multi-level dictionaries are deprecated.
2045 - new function xbt_dynar_search_or_negative() that is useful when
2046 you have less than 2 million elements in your dynar and don't
2047 want of the extra complexity of catching exceptions when the
2048 element is not found.
2050 - Make xbt_os_thread module (for thread portability) public.
2051 Documentation is still to come, sorry.
2053 - Cleanups and simplifications to make it maintainable again.
2054 - Exotic features (such as memalign and valloc) were removed.
2055 - The metadata were extended and improved so that the
2056 model-checker becomes able to explore and inspect the heaps.
2057 - This may induce a performance drop when enable_model-checking is
2058 ON in cmake (even if it's not used in the simulation), but it is
2059 necessary at this point to get MC working.
2061 Turn model-checking OFF if simulation performance matters to you.
2062 Not enabling it at runtime is not enough, disable it in cmake.
2064 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2067 SimGrid (3.6.2) stable; urgency=low
2069 The "Not coding new stuff allows to polish old things" release.
2072 * New bindings to the NS3 packet level simulator (experimental)
2073 * Use the raw (efficient) execution contexts instead of the sysv
2074 (portable) ones when possible.
2075 * libpcre is now mandatory in any cases since not using it led to
2076 severe performance loss and possibly other issues
2077 * Update the XML platforms:
2078 - G5K: include the latest machine in Nancy
2079 - GridPP and LCG: new platforms
2080 * Documentation was partially updated, at least (more to come)
2082 Bug fixes, cosmetics and small improvements
2083 * Free terminated processes before the end of the simulation to avoid
2084 exhausting the memory of users having very dynamic amount of
2086 * Bug fix and cosmetics about canceling non-running tasks
2087 * Bug fix about the dot loader's issues when using libcgraph
2090 * Create an installer for windows with nsis (amd64 and win32)
2091 - Add an hello world project to illustrate simgrid project creation.
2092 - Embed libpcre into the Simgrid installer to avoid
2093 its compilation burden
2094 * The raw execution contexts should work on Apple now
2095 * Port to Windows 64 bits
2096 - Sysv contexts now have an implementation for this arch
2097 - GRAS communication features now support this arch
2098 * Drop support for borland compiler on windows
2099 - this code was not maintained, and we kinda depend on gcc nowadays
2100 * Fix portability issues on kfreebsd/gnu: build error about semaphores
2101 * Fix portability issue on unstable ubuntu: linker became picky on
2104 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2106 SimGrid (3.6.1) stable; urgency=low
2108 The "Oops, we broke Macs too" release
2111 * Fixed contexts detection so that raw ones are used when possible
2112 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
2113 leads to a strange error, with user code segfaulting sometimes when
2114 the generated code is not perfectly aligned (which is not
2115 controllable from the user side, depends on the amount of code)
2118 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
2120 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2122 SimGrid-java (3.6) unstable; urgency=low
2125 * Split of every thing from simgrid v3.5 into a separate package.
2127 -- 2011-10-05 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2129 SimGrid (3.6) stable; urgency=medium
2131 The Summer Release, also known as the "OMG! They Killed Kenny!" version
2134 * Bindings now constitute their own package, separated from the main one.
2135 Rationale: reduce our maintenance nightmare by reducing the module coupling
2136 They will soon be released on their own on gforge.
2138 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
2139 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
2141 GRAS: It is not considered as stable anymore, but experimental. Sorry.
2142 * It's not quite deprecated for now because we have no replacement,
2143 but it may soon become the case.
2146 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
2147 * Fortran: New user-level cache variable to store the rank of the running
2148 process. This improves performance by an order of magnitude.
2149 * C: New coccinelle script to automatically locate and modify global and
2150 local static variables.
2151 * Improved SMPI network model with a sender-side gap to account for multiple
2155 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
2156 only say if a communication is finished, no matter whether it succeeded or
2157 failed. You can call MSG_comm_get_status() to know the status of a finished
2159 * New function MSG_task_dsend() to send a task and detach it. When a
2160 communication is detached, you are never notified of its success or failure
2161 and the memory is released automatically once it is finished. This function
2162 is useful when you don't care about the end nor the success of a
2164 * Change the prototypes of action replay. Sorry for inconvenience,
2165 but this is really more efficient this way (and to adapt your code,
2166 you just have to fix the initialization, that shouldn't be too long)
2167 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
2168 ever managed to do anything useful with it.
2169 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
2170 takes a dynar of communications. It returns immediately and gives the
2171 index of a finished communication (if any).
2172 * New example: a basic implementation of the Chord P2P algorithm.
2175 * New model for multi-core CPUs. You can now use the core attribute to
2176 precise the number of cores of a host. This is a basic model. Every
2177 process running on the host receives at most the power provided in
2178 the DTD (throughput<=power). Total throughput of process cannot exceed
2180 * New peer tag. This peer tag creates a tiny AS comprising a host and a
2181 router linked by an up-link and a down-link (possibly asymmetrical).
2182 This kind of pattern allows to easily build last-mile model style platforms.
2183 Aggregating such patterns in a rule-based AS is thus the technique of
2184 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
2185 * New model for Vivaldi routing. We transformed the Vivaldi network model
2186 into a Vivaldi routing model (based on the rule-based model). This allows to
2187 combine Vivaldi based latencies with last-mile platforms.
2190 * Added a check for NaN of IEEE754 infinite in the double entries of
2192 * Introduce a new context factory "raw", highly inspirated from the
2193 ucontext factory, but using manually crafted functions in assembly to
2194 do the work in an efficient manner.
2195 * Allow to change the used context factory at run time, not only at
2196 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
2197 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
2198 contexts at runtime (only with raw contexts or ucontexts).
2199 * Completely rewrote this module to allow parallel execution of user
2200 processes. Use --cfg=contexts/nthreads:N to execute user processes
2201 with N parallel threads (the default is 1, meaning no parallelism).
2202 * Allow to decide dynamically between sequential and parallel modes.
2203 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
2204 processes in parallel only when their number is greater than or equal to P
2206 * Added a check for NaN of IEEE754 infinite in the double entries of
2210 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
2211 won't output the state of processes when interrupted with Ctrl-C
2212 * Add a new function xbt_dynar_to_array that transforms a dynar into a
2213 NULL-terminated array. This may solve backward compatibility issues
2214 due to the change to return type of SD_simulate. See also:
2215 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
2216 * Add new macros with variable number of arguments.
2217 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
2218 - in xbt/asserts.h: xbt_assert
2219 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
2220 - in xbt/ex.h: THROWF and RETHROWF.
2221 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
2223 * Change xbt_die() to accept a format string with arguments, just like printf.
2224 * New data structure: xbt_lib_t, like a dict but more general and with better
2228 * New configuration options
2229 Options triva/categorized and triva/uncategorized can be used to generate
2230 graph configuration files for Triva visualization tool.
2231 * Configuration option tracing/platform is renamed to tracing/categorized
2232 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
2233 * New TRACE_user_link_variable interface:
2234 User provides the name of the link and the tracing variable to attach to it
2235 * the declaration of tracing categories must be done after the environment
2237 * simpler tracing interface, just one way to declare categories
2238 TRACE_category or TRACE_category_with_color, it is up to you
2239 * links in the trace file are again identified by their names
2240 * trace contains the full platform hierarchy exactly as declared using the ASes
2241 * Options tracing/msg/[task|process]:1 groups the process by hosts
2242 for both cases, tasks and processes must have names that are unique during the simulation
2243 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
2244 * The experimental option tracing/msg/volume is deprecated
2245 its functionality may be reincorporated if needed
2247 The tracing generates a trace file with unordered timestamped events,
2248 because of the way the core simulator (surf) works. A script available
2249 at the tools directory (fix-paje-trace.sh) can be used to put the events
2250 in order. We have changed the tracing so it can generate ordered timestamped
2251 events in the final trace, but depending on the simulator (and how much time
2252 is simulated) that can lead to a huge memory utilization. It is deactivated
2253 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
2255 Build Infrastructure
2256 * Define a SIMGRID_VERSION macro in simgrid_config.h.
2257 - We are trying hard to keep the API stable, but it may happen that
2258 some things change (we're a research project after all, not a
2259 nuclear plant operating system). If such things should happen, you
2260 could rely on that macro to adapt.
2261 - current value: 30600 for 3.06.00, aka 3.6
2262 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
2263 a number that can be compared with SIMGRID_VERSION.
2264 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
2265 assertions and verbose/debug logging events are disabled at compile time.
2267 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2269 SimGrid (3.5) stable; urgency=medium
2272 * New feature to any SimGrid-based simulator: Model-Checking
2273 Check SIN#1 for more details.
2276 * New Model SMPI (three-interval linear regression for correction factors)
2277 See RR-7426, available at http://hal.inria.fr/inria-00527150
2278 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
2279 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
2280 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
2281 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
2282 * See also src/smpi/README
2287 - Tracing API changes: TRACE_start and TRACE_end should not be called
2288 by user-code. They are automatically called by simulators created
2289 with SimDAG, MSG and SMPI if the toolkit is compiled with
2290 tracing_enabled=ON. Categories declaration and utilization remain the
2291 same for MSG and SimDag.
2292 - A function was added to the tracing API to declare categories with
2294 - TRACE_category_with_color (char *category, char *color)
2295 where color must be in the following format
2296 "%f %f %f", red, green, blue
2297 and red, green, blue are float values in the interval [0, 1]
2298 - User can specify NULL as color parameter, or continue calling
2299 TRACE_category (cat)
2300 On that case, the tracing system will define random colors
2301 - The following command-line options are supported:
2302 --cfg=tracing/filename:msg.trace
2303 --cfg=tracing:1 (activate tracing, needed to use others)
2304 --cfg=tracing/platform:1 (categorized resource use)
2305 --cfg=tracing/uncategorized:1 (uncategorized resource use)
2306 --cfg=tracing/msg/task:1 (task creation)
2307 --cfg=tracing/msg/process:1 (process creation, migration)
2308 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
2309 --cfg=tracing/smpi:1 (SMPI interface tracing)
2310 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
2311 - examples of examples/msg/tracing updated
2313 - DAXLoader and DOTLoader functions can generate tasks with categories
2314 - A new function to attribute a category to SD tasks:
2315 TRACE_sd_set_task_category (SD_task_t task, char *category)
2316 * Tracing the MPI interface implemented by SMPI
2317 - Collective operations are traced with states
2318 - Point-to-Point operations are traced with states/links
2319 - Tracing activated by a parameter "-trace filename" passed
2320 to smpirun during execution (considering that simgrid
2321 is compiled with tracing enabled)
2322 - To run the simulation with gdb, the simulator
2323 accepts --cfg=tracing/smpi:1 to trace SMPI
2324 - tesh files to check if smpi tracing is ok
2325 - See examples/smpi/NAS/DT-trace
2326 * GTNetS tracing re-worked
2327 - adaptation to the tracing system of GTNets to cope
2328 with modifications regarding the fullduplex mode
2329 - new tesh files to check if gtnets tracing is ok
2332 * Asynchronous communications through the functions:
2333 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
2334 * New function: MSG_load_platform_script()
2335 to make possible using a lua script instead of XML files to set up platforms
2336 * New function: MSG_set_function
2337 to associate functions to processes, used when bypassing the parser
2338 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
2340 Platforms: Add some more examples in examples/platforms
2341 * Grid'5000: see www.grid5000.fr
2342 * *_30000_hosts.xml: various huge files [mainly scalability testing]
2345 * Change the XML format. This is a very important modification. SimGrid
2346 3.5 introduces a new hierarchical format based on the notion of
2347 Autonomous Systems. Compatibility with old format is ensured
2348 through the perl script provided in the install bin directory
2349 bin/simgrid_update_xml.
2350 It is now possible to build platforms with specific routing
2351 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
2352 connect several platforms together. We will try to provide soon
2353 set of realistic platforms exploiting these properties (have a
2354 look at examples/platforms/ for the moment).
2355 * Take the opportunity of the XML format change to be a good XML citizen:
2356 rename link:ctn to link_ctn and similar changes (also dealt with by
2358 * Add a new routing scheme (rule-based) using regular expressions. It
2359 enables to have an extremely low memory footprint when the
2360 underlying routing is simple and can be compactly described. You
2361 need to have libpcre4-dev (perl regular expressions) installed if
2362 you want to use this routing scheme.
2363 * Revive the cluster TAG and allow to easily and efficiently (both in
2364 term of memory and speed) connect clusters together. Have a look
2365 at teshsuite/simdag/platforms/ to see how this can be done. With
2366 this tag, you can create clusters with thousands of tasks at no
2367 cost (have a look at examples/platforms/).
2368 Note: clusters are implemented as ASes, so there is no need for an
2369 enclosing AS tag if you have only one cluster in your platform.
2370 * Add new generic functions in the public interface that allows the user
2371 to call SURF 'create_resource' methods from your code (same
2372 functionality as the XML bypass mechanism but with a much lighter
2374 * Add a new model (enabled through command line --cfg=network/model:SMPI)
2375 that uses a piecewise linear approximation to produce better
2376 results when exchanging small messages.
2377 * Add a new parameter to handle correctly full duplex link and account
2378 for interferences between uplink and downlink communications
2379 (activate with --cfg=fullduplex:1).
2382 * Rename the SD_READY (all dependencies are satisfied and task is
2383 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
2384 dependencies are satisfied) state.
2385 This prevents a confusion between the notion of "ready to schedule"
2386 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
2387 simulated" (SD_RUNNABLE) used by the simulation kernel.
2388 * Change the way a task is considered as ready. Instead of removing
2389 dependencies when a task is done, a counter is decreased. This way,
2390 it is always possible to reach ancestors thanks to the
2391 SD_taks_get_parents function (even after the end of the simulation.)
2392 * Change the return type of SD_Simulate from (SD_task_t*) into
2393 xbt_dynar_t. This function was in handling a dynar internally and
2394 converted it into a NULL terminated array for historical reasons.
2395 * New function SD_dotload(char*) to load a DAG described in dot
2396 format. This loader and the corresponding examples require the
2397 installation of the graphviz library.
2398 * Fix a bug in the management of tasks of size 0 in the surf network
2399 models. This problem was only visible with SIMDAG and you should
2400 thus disregard results produced with earlier versions if you
2401 relied on this feature (some tasks were blocked because of this).
2402 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
2403 even though your applications were doing only point-to-point
2404 communications and sequential computations. Now you can really use any
2405 model you want (of course, if you create real parallel tasks, which are
2406 not implemented in most models beside ptaskL07, this will abort).
2407 * Add an example that schedules a DAX on an heterogeneous platform
2408 using a Min-Min strategy.
2409 * New function SD_workstation_get_current_task() that returns the kind
2410 of task currently running on a workstation in the sequential access
2412 * Raise some warnings when unexecuted tasks remains at the end of the
2413 simulation. This is usually caused by cycles in the DAG.
2416 * New function: SIMIX_process_set_function() called by MSG_set_function
2417 * Change the underlying waiting queue in semaphores so that a process
2418 can wait on several of them simultaneously (as in waitany).
2419 * Fix the way to handle tokens in semaphores so that all access patterns
2420 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
2421 * kill the dirty pimple SIMIX_message_sizes_output()
2422 Please use (proper) visualization instead
2425 * New data container: setset (set of sets of elements)
2426 * New module: mmalloc (mapped malloc, allowing to have several
2427 independent segments of malloc)
2428 * New function: xbt_dict_cursor_set_data()
2429 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
2430 * New function: xbt_dynar_is_empty()
2431 * New function: xbt_fifo_get_last_item()
2432 * Fix xbt_dynar_shrink(): use the right element size.
2433 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
2434 uninitialized areas during expand.
2435 * Fix semaphores: previous implementation was severely broken.
2436 * Use library init/fini functions for our initialization.
2437 - you can use logs and other feature as soon as you want in your
2438 code (even before the xbt_init / MSG_init)
2439 - xbt_exit is now a no-op and produce a warning when used.
2442 * Port GRAS to new SIMIX mechanisms. This allows gras users to
2443 benefit from the latest improvement to the simulation kernel.
2444 * Kill measurement sockets for now. If you rely on them, sorry. This
2445 release is not for you. This feature will be reintroduced in the
2446 future, but we cannot delay the release any further.
2447 * New function: gras_msgtype_get_name().
2448 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
2449 * Fix (at last) the pmm example: it should not randomly fail anymore.
2451 Build chain: bug fixes and overall polishing
2452 * Cmake is now stable enough. Hence, we killed the autotools.
2453 * Port to windows ( TM :)
2454 * Fix the 'make install' target.
2455 No need to use 'make install-simgrid' anymore
2456 * Introduce a 'make dist' target compiling a *source* archive
2457 'make package' compiles a binary archive
2458 * Compile java files only on need
2459 * Add --cd and --setenv command line options to tesh
2460 * Out of source builds are not fully supported yet, but we are close
2461 * Enable supernovae and optimization flags by default for our users
2464 * Add layer to set up environment directly from lua, without XML.
2465 * The effect of gras_stub_generator can be achieved through
2466 lua too (check examples/gras/console/ping_generator.lua)
2468 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2470 SimGrid (3.4.1) stable; urgency=low
2472 The "Polishing easter eggs is probably a good idea" release.
2473 This is a bug fixes release only.
2477 * Fix a bug preventing the tasks from begin garbage collected.
2480 * Fix a bug occurring when a host involved in a communication fails.
2481 This was not detected properly by the other peer involved in the
2482 communication. Now, it's reported as a network error.
2485 * Warn the user about loop dependencies in data flow of DAX files
2486 * Obey the control-flow dependencies of DAX files
2489 * Add option "enable_smpi" allowing to not compile SMPI.
2490 Probably useful for the (Mac) users experiencing a build error here
2491 * Improve the detection of lua5.1 and ruby1.8
2493 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
2495 SimGrid (3.4) stable; urgency=low
2497 The "Easter in Cargese" release. Also known as (major changes):
2499 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
2500 ~> bindings were greatly improved
2501 ~> new tracing infrastructure for better visualization introduced
2503 * the "Welcome to configury modernity" release.
2504 ~> we switched from autotools to cmake, and improved our cdash
2507 A more detailled list of changes follow (full detail in svn log).
2509 Java Bindings: Various Cleanups
2510 * (install java-gcj-compat-dev on debian-like to use them)
2511 * Remove put/get: no need to export deprecated interface in Java
2512 Use send/receive instead.
2513 * Cleanup the examples and add a README per directory
2514 * Remove example autoDestination (that's the only way to go now)
2515 * Remove example explicitDestination (was a plain copy of basic)
2516 * Make JniException a runtime exception, so that there is no need to
2517 declare the fact that you may encounter such a beast. I guess that
2518 nobody will ever want to survive such error.
2519 * Create specific errors for each MSG case of failure:
2520 host failure, transfer failure, timeout, task cancelled
2521 * Cleanup the exceptions that may get thrown by each function
2522 * Other internal cleanups in Java bindings. Performance still bad :/
2523 Ruby and Lua Bindings: create them
2524 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
2525 * That's new and great, you should try them out.
2526 Same functionalities than Java bindings, only even less polished
2528 * Kill the useless "rate" argument of SD_task_get_execution_time()
2529 Everyone used to provide -1 as a value, it was not used, and the
2530 semantic of a possible use wasn't even clear.
2531 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
2532 either as comm costs or compute costs to mean that there is no
2533 such thing for that specific task.
2534 * Add a SD_task_set_name() function
2535 * Fix SD_task_unschedule() on typed tasks
2536 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
2537 * In DAX loader, accept useless 'level' attributes to <job> since
2538 LIGO DAGs have them (seem to be to ease graphical representation).
2540 * Add an example masterslave_mailbox.c using send/receive and not
2541 the deprecated put/get interface.
2542 * Kill the MSG_paje_output() function. It's a noop since 2 years.
2543 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
2545 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
2546 (declare MSG_USE_DEPRECATED to still have the old name)
2547 * Add a MSG_task_set_data() function
2548 * About trace replay (see examples/msg/actions):
2550 - Allow to work with splitted trace files for each process
2551 Give the specific trace file as argument of each process,
2552 and call MSG_action_trace_run(NULL)
2553 You can still have one merged file for all processes.
2554 - Fix implementation of collective operations
2555 * Allow task_execute() on 0-sized tasks (closes #10063)
2557 * This is the first release of SimGrid where SMPI is not considered
2558 beta anymore (even if some corners should still be improved)
2559 * Port over the new SIMIX_network submodule (internal refactoring)
2560 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
2561 * Implement more missing elements of the standard:
2563 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
2565 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
2566 MPI_Scan() MPI_Get_processor_name()
2567 - Added implementation of missing case for Alltoall (warning: it's
2568 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
2569 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
2570 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
2571 SMPI_MPI_Allgatherv()
2572 * Bug fixes include:
2573 - MPI_Waitsome() was broken
2574 - Allow relative includes in smpicc
2575 - Command line cfg argument 'reference_speed' was ignored...
2576 - Some functions did not properly lead to auto-benching of user code
2577 - smpicc passes -O2 by default (just like openmpi one)
2579 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
2580 * Bug fixes about timeouts during communications
2581 * add SIMIX_message_sizes_output() as a pimple to write to file the
2582 amount of messages per size. Use gnuplot to get histogram.
2583 Pimple because that's the only user-visible function of simix,
2584 defined directly in xbt.h (irk, sorry)
2586 - Add a SIMIX_sem_get_capacity() function
2587 - Fix interactions with processe resume/suspende
2588 - release_forever() was stupidly broken
2589 - Fix SIMIX_display_process_status() for processes in a semaphore
2590 - Make SIMIX_sem_block_onto() user-visible
2591 * Refactoring context stuff:
2592 - Use pseudo-OOP for better modularity
2593 - reimplement SIMIX_process_kill() without process_schedule() so
2594 that the latter can take as invariant that it is called from
2596 - Merge context_start into context_new for sake of simplicity
2598 * Add a Vivaldi network model, coded live during SUD'10 ;)
2599 * Rename configuration variables to start a hierarchy:
2600 o cpu_model -> cpu/model
2601 o network_model -> network/model
2602 o workstation_model -> workstation/model
2603 * New configuration variables:
2604 o network/bandwidth_factor: correction to bandwidth
2605 o network/latency_factor: correction to latency
2606 o netwotk/weight_S: correction to the weight of competing streams
2607 * Add a long description to the models, that users can see with such
2608 argument on the command line: --cfg=cpu/model:help
2609 * --help-models display the long description of all known models
2611 * config: add the ability to set a default value after registration
2612 Does not override any previously set value (e.g. from cmd line)
2613 * dict: allow to have integer key and data.
2614 When so, you need to use the following functions
2615 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
2616 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
2617 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
2618 In contrary to regular dicts, the key is not malloced before copy.
2619 Mixing scalar and regular elements in the same dict is not tested
2621 * Allow to use xbt_dynar_shrink() to expend the dynar instead
2622 Tracing for Visualization:
2623 * SimGrid is now instrumented in order to generate a trace file for
2624 visualization analysis: to use it, need to compile SimGrid with the
2625 "tracing" option enabled, and instrument the program using SimGrid with
2626 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
2627 (among other functions).
2628 * The instrumentation only traces the platform utilization for now
2629 * Documentation to use the tracing functions and how to analyze the
2630 traces with the Triva tool is written.
2631 * More information about: SimGrid FAQ (in the section Tracing Simulations
2634 * We moved to cmake as default build system. Autotools support will
2635 be dropped soon. Check the FAQ for more info about how to use it.
2636 * Greatly improved our cdash/ctest interactions
2637 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
2638 * Added memory checking tests with valgrind; lot of memleak fixing.
2639 This may be the first release of simgrid with so few memory issues
2640 * Added code coverage tests.
2641 Our coverage is still improvable, but at least we see it on cdash.
2643 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
2645 SimGrid (3.3.4) stable; urgency=low
2647 The "Desktop Grid needs love too" release (also called Xmas release).
2649 Models improvements:
2650 * Major speedup in the maxmin system solving by using lazy evaluation
2651 Instead of solving completely the maxmin system at each iteration,
2652 only invalidate (and recompute) the modified parts.
2653 This new feature is enabled in default models but you can try to
2654 turn it on with "--cfg:maxmin-selective-update=1" for other models.
2655 * Cas01 IMproved as default CPU model
2656 This CPU model is the same Cas01 model, but it uses the
2657 maxmin-selective-update flag and a heap structure to manage
2658 actions on SURF kernel.
2659 It reduces the complexity to find the next action to finish and,
2660 consequently, it's faster than the old Cas01.
2661 This is the new default CPU model (Cas01).
2662 * Rename the old Cas01 model to Cas01_fullupdate
2663 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
2664 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
2665 * CpuTI (CPU Trace Integration)
2666 A new CPU model whose objective is simulate faster when using
2667 availability trace files.
2668 Instead of using a full featured, over engineered maxmin system for
2669 CPU modeling, this model does the pre-integration of traces files
2670 to calculate the amount of CPU power available, and so, executes
2671 faster than the old CPU models.
2672 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
2673 * Use LV08 as default network model since it gives better accuracy
2674 for small messages and shouldn't change things for big ones.
2675 Use --cfg=network_model:CM02 to get the previous behavior.
2678 ******************************************
2679 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
2680 ******************************************
2681 * The new CPU model may changes simulations!
2682 The point is that events occurring at the exact same timestamp
2683 are not scheduled in the same order with the old and new
2684 version. This may be enough to completely change the execution
2685 of simulations in some cases.
2686 * The new network model will change simulations!
2687 This new model is more realistic than the previous one, so you
2688 should consider redoing your old experiments with this model.
2689 Sorry for the inconvenience.
2692 * Introduce the supernovae compilation mode
2693 When compiled that way, the whole SimGrid (or almost) is put in a
2694 single compilation unit and compiled in one shoot.
2695 This is to help gcc which has difficulties to inline stuff from one
2697 The speedup seem to be above 15%, althrough more tests are needed on
2698 amd64 to confirm that gain.
2701 * Port of MSG's mailbox on top of SIMIX network
2702 The put/get mechanism was greatly simplified on the way.
2705 * New SIMIX network module. Provides:
2706 - Mailbox: rendez-vous mechanism to find with who you want to speak
2707 - Synchronous send/recv: easier and hopefully faster since the
2708 logic is handled in the maestro process directly now
2709 - Asynchronous send/recv: you dreamt of it? It's here now
2710 Too bad that nobody cared enough to propagate the change to MSG.
2711 * Add semaphores as SIMIX synchronization mechanism.
2714 * new function SD_daxload(char*) to load a DAX file
2715 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
2716 * Introduce typed tasks. Specify its kind and cost at creation.
2717 At scheduling, just give where it should be placed, and the cost
2718 for each involved resource is automatically computed.
2719 Existing constructors so far (more to come of course):
2720 - SD_task_create_comm_e2e() for end-to-end communication
2721 - SD_task_create_comp_seq() for sequential computation
2722 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
2723 * new function SD_task_dump() for debugging display
2724 * new function SD_task_dotty(task,FILE*) writing to file the info
2725 about the task in dotty format
2726 * SD_task_dependency_exists() can now cope with having one of its
2727 arguments NULL. If so, it tests whether the other argument has any
2729 * Add getters on list of preceding/following tasks:
2730 SD_task_get_parents(task) and SD_task_get_children(task)
2731 * Add getters on amount of workstations and list:
2732 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
2733 * Add getter on task kind: SD_task_get_kind(task)
2734 * Update the start_time and finish_time of tasks on completion/failure
2735 * Bugfix: Remove task from state swags when destroyed
2738 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
2741 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
2742 dynar with one separate thread per value of the dynar.
2743 * Change the prototype of xbt_thread_create(), sorry.
2744 Added a boolean parameter indicating whether we want to join this
2745 thread (used in SG only for now)
2746 * Implement xbt_thread_join and xbt_thread_yield in SG also.
2749 * GTNetS wrappers should now be usable again (and betterly tested too)
2750 * Fix a major regression from 3.2 where the timeout provided to
2751 MSG_task_put_with_timeout() was used as absolute time before which
2752 the comm should be done.
2753 * Start to fix the <cluster> tag.
2754 - Internal links should be good now (beside of the loopback, which
2755 use the private link instead)
2756 - paths to the external world is still rather broken
2757 - the <route:multi> tag is just broken. Actually that's brain-dead.
2758 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
2759 to make it less stupid
2760 ** Check your platform with teshsuite/simdag/platforms/flatifier **
2761 * Fix a source-level compatibility glitch from 3.2: after defining
2762 MSG_USE_DEPRECATED, you can use the old name
2763 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
2764 * Allow to compile from the SVN with automake 1.11
2765 * Fix some problems when using the "start_time" tag in deployment XMLs.
2766 * Fix #8569: XBT/synchro.h has redundant declarations
2767 * Fix #8563: MSG return values and exceptions
2768 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
2769 * Integrate patch #8636: Obey DESTDIR when installing documentation.
2770 Thanks to Robson Peixoto.
2771 * Fix a vicious bug in dictionaries inducing that some elements were
2772 not freed on xbt_dict_free()
2774 Portability report of this version:
2775 * Main portability targets:
2776 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
2777 on (amd64/i386/ia64)
2778 - mac leopard on i386
2779 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
2780 but nothing critical.
2781 * Other platforms: windows, AIX and others were not tested for this release
2783 Timing report of this version:
2784 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
2785 scenario parameters). From 8h to a few seconds in desktop grid settings.
2786 * Supernovae brings about 25% speedup on i386.
2788 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
2790 SimGrid (3.3.3) stable; urgency=low
2792 The "Need for Speed" release.
2794 The timings done to validate the 3.3.2 were faulty.
2795 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
2797 The problem was a conversion from a manually handled vector to
2798 xbt_dynar_t on the critical path.
2799 xbt_dynar_foreach calls functions, inducing stack management crap.
2801 We inlined these functions and xbt_dynar_foreach is now breath taking.
2802 We also inlined xbt_swag_belong on the way.
2804 Here are some approximate speedup measurements (on master/slaves
2805 simulations lasting between 10s and 20s each):
2806 3.3.1 -> 3.3.2: about same performance
2807 3.3.2 -> 3.3.3: 40% speedup
2808 3.3.1 -> 3.3.3: 40% speedup
2809 3.3.1 with inline patch -> 3.3.3: 30% speedup
2811 Our reading is that the refactoring which occurred in 3.3.2 made us
2812 suffer much more from the xbt_dynar_foreach low performance, but
2813 once we solved this, this refactoring proved to be very performance
2814 effective. From the 40% speedup, somehow, 10% are due to the
2815 inlining and 30% to the refactoring.
2817 That's a pitty that gcc cannot inline functions placed in other files
2818 alone. We have to choose between:
2819 - break the encapsulation (by putting private data structures and
2820 accessors in headers files to help gcc)
2821 - live with low performance
2822 - switch to a decent compiler such as icc (not quite possible).
2824 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
2826 SimGrid (3.3.2) stable; urgency=low
2828 The "Simplicity does not preceed complexity, but follows it" release.
2830 The main contributors of this release were (lexical order):
2831 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
2834 * Extract the routing logic into its own object.
2835 (was dupplicated in network.c and workstation_LV07.c;
2836 Allows to implement other ways of storing that info)
2837 => kill now useless network_card concept
2838 - Use dynar to represent routes (instead of void** + int*)
2839 - kill link_set (use surf_network_model->resource_set instead)
2840 - Add a command-line option to choose the routing schema to use
2841 - Add three new models:
2842 * Floyd (shortest path computed at initialization)
2843 * Dijikstra (shortest path recomputed all the time)
2844 * Cached Dijikstra (shortest path computed on need)
2845 All these models where contributed by Silas De Munck, and are
2846 described in his ICCS09 paper.
2848 * Simplify model declaration
2849 (less redirections, less function to write when defining a model)
2850 - Factorize stuff between models:
2853 surf_model_resource_set(model)
2854 surf_model_resource_by_name(model, name)
2855 - Unify the types of models in s_surf_model_t (using an union)
2856 - Embeed fields of common_public directly into s_surf_model_t
2857 - Rename model methods:
2858 action_free ~> action_unref
2859 action_change_state ~> action_state_set
2860 action_get_state ~> action_state_get
2861 - Change model methods into functions:
2862 (model)->common_public->action_use ~> surf_action_ref
2864 * Implement a generic resource; use it as ancestor to specific ones
2865 (allows to kill duplicated code in models)
2866 Drawback: timer command don't need no name nor properties;
2867 workstation_CLM03 don't need no properties
2868 (but I guess we can live with those few bytes wasted)
2870 * Improve the action object model
2871 - implement a constructor avoiding dupplicated code about field
2872 initialization in generic_action part.
2874 * Kill the SDP model: it has an external dependency, is deprecated
2875 in flavor of modern lmm models, and didn't compile since a while
2878 * Relocation of the context module from XBT to SIMIX.
2879 (the context were decoupled from the simix processes, duplicating a lot of code)
2880 => a lot of code was factorized
2881 - less overhead is introduced during scheduling
2882 - simpler API for the context factory
2883 - the logic for process creation,destruction and manipulation was simplified
2884 * Simplification of the s_smx_process_t data structure.
2885 => accesing the simix level data associated to a process is faster now,
2886 and the code is a lot more readable.
2889 * Implement some more MPI primitives:
2890 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
2891 -implementation: Bcast: flat or 2-ary tree (default),
2892 Barrier: 4-ary tree,
2894 Allreduce: Reduce then Bcast
2895 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
2896 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
2897 Alltoallv: flat tree, like ompi
2899 * Add support for optimized collectives (Bcast is now binomial by default)
2900 * Port smpirun and smpicc to OS X
2903 * Kill SD_link_get_properties: hard to maintain and makes very little sense
2904 Shout out if you used it.
2907 * Display the list of still queued messages in SG mode when existing
2911 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
2912 * Add xbt_graph_node_get_outedges() [Silas De Munck]
2913 * Add xbt_str_from_file(FILE*)
2914 * Add xbt_dict_get_key achieving a linear reverse search
2915 * Remove the context module
2917 Portability report of this version:
2918 * Main portability targets:
2919 - Linux(debian)/x86/context
2920 - Linux(debian)/x86/pthreads
2921 - Linux(debian)/amd64/context
2922 - Linux(debian)/amd64/pthreads
2923 On these, we still have the eratic breakages of gras/pmm and
2924 amok/saturate_sg reported in previous version. We still think
2925 that the tests are the cause of the fault, not the tested code.
2927 - Mac OSX Leopard/x86/context
2928 Still false negative in tesh autotesting.
2929 Smpi still fails, but this time because readlink does not accept -f
2930 Everything seems to work properly beside of that.
2933 - AIX version 5.3 (only tested contexts this time)
2934 Smpi still fails there because mktemp is not installed.
2935 Everything seems to work properly beside of that.
2937 I managed to compile it for the first time, but several breakages.
2938 Won't delay the release for this exotic platform.
2940 * Windows: it's still lagging behind. If you want to help, please
2943 Timing report of this version:
2944 This version seem to be more than 5% faster than 3.3.1 (on linux
2945 64bits with contextes). The gain is less than expected, we are
2946 investigating this for next release.
2948 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
2950 SimGrid (3.3.1) stable; urgency=low
2953 * Implement a --cfg-help to show existing configuration variables
2954 * Build chain do not require doxygen in maintainer mode
2957 * fix a bug on struct sizeof computation, which prevented the
2958 exchange of arrays of structs in some conditions
2959 - added a regression test about this in datadesc_usage
2960 * Allow the exchange of 0-long dynamic vectors.
2961 - for that, use -1 as indicator of dynamic size instead of 0
2962 - This implied to change any size from unsigned long to long,
2963 reducing a bit communication abilities, but I guess that with
2964 64bits being quite common, this is more than enough.
2965 - This also induce a protocol change, thus bumping network protocol
2966 version from 0 to 1 (if we have external users, we have to get
2967 clean on that point too ;)
2968 - added two regression tests about this in datadesc_usage
2969 * Be more verbose when propagating local exceptions
2970 This helps debugging.
2971 * Display the status of simulated processes when receiving SIGINT in
2975 * Allow to control the simulation from a trace file.
2976 New functions MSG_action_register() and MSG_action_trace_run()
2977 The first one allows to associate a function execution to each
2978 kind of action while the second one parses a trace file and
2979 triggers the corresponding actions within the system.
2980 For now, only a toy example is provided in examples/msg/actions
2981 * Add an example of process migration in examples/msg/migration
2982 * Fix a bug in task exchange which broke MSG_task_get_sender()
2983 Add a teshsuite regression test for that.
2984 [Bug: if MSG_task_get_sender() is called after sender exit,
2986 * Fix a bug which prevented suspend/resume to work properly
2987 * Display the status of simulated processes when receiving SIGINT
2988 This fixes a regression of v3.3. due to the introduction of SIMIX
2989 * Bug fixing in failure management:
2990 - trace could not start by a failure at time 0
2991 - failure during communications were not working
2994 * Add SIMIX_process_set_name() to change the name of the current
2995 process in the log messages.
2996 * Store smx_hosts in a dict since we only retrieve them by name
2997 * Move the configuration infrastructure to surf
3000 * Move the configuration infrastructure to surf
3003 * Massive internal cleanups:
3004 - Store internal structures on processes instead of hosts (allows
3005 to have more than one process per host, in addition of being more
3007 - Cleanup the initialization/finalization process
3008 - Kill a whole bunch of unneeded synchronization:
3009 processes run in exclusive manner within the simulator
3010 - Move queues from global tables to process data fields
3012 - now accept -platform and -hostfile arguments
3013 - Pass the right rank value to processes according to the hostfile
3014 * Compile the examples by default, and use them as regression tests
3015 * Implement MPI_Wtime()
3016 * Change the reference speed to a command line option
3019 * TCP_gamma can now be specified as command line option using
3020 --cfg=TCP_gamma:10000000.0
3021 * Change the --surf-path cmd line option into --cfg=path:
3024 * Also include strbuff from xbt.h public header
3025 * xbt_ex_display(): do not free the exception after displaying
3026 This allows to do more with the given exception afterward.
3027 Users should call xbt_ex_free() themselves.
3031 Portability report of this version:
3032 * Main portability targets:
3033 - Linux(debian)/x86/context
3034 - Linux(debian)/x86/pthreads
3035 - Linux(debian)/amd64/context
3036 - Linux(debian)/amd64/pthreads
3037 These targets fail about 1/10 of times on gras/pmm, but we believe
3038 that this is because of the test, not because of simgrid.
3039 amok/saturate_sg fails even more rarely, and the test may not be
3042 - Mac OSX Leopard/x86/context
3043 The test suite still spits tons of errors because some obscure
3044 force prevents us from removing the temporary directories
3045 arguing that they still contain some metadata I've never heard of.
3046 Smpi fails because seq is not installed.
3047 Everything seems to work properly beside of that.
3050 - AIX version 5.3 (both contexts and pthread)
3051 Smpi still fails there because mktemp is not installed.
3052 XML inclusions seems rosty on AIX.
3054 * Windows: it's still lagging behind. If you want to help, please
3057 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
3059 SimGrid (3.3) stable; urgency=high
3063 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
3064 [Malek Cherier & Mt]
3066 * Introduce the SIMIX module: factorize code between MSG and GRAS.
3069 Until now, GRAS were using MSG as an interface to SURF. It was
3070 quite difficult because both interface have several differences
3071 (MSG channels vs GRAS sockets were the most notable point).
3073 This also opens the gate to SMPI (which should occur soon) and speed
3074 up simulations by to 40% (even if it were not the main goal).
3076 **************************************
3077 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
3078 **************************************
3079 The point is that events occurring at the exact same timestamp are
3080 not scheduled in the same order with the old and new version. This
3081 may be enough to completely change the execution of simulations in
3082 some cases. Sorry for the inconvenience.
3084 * Cleanup and upgrade the XML format to push further scalability
3085 issues (check http://hal.inria.fr/inria-00256883/ for more info)
3087 * Improve the testing infrastructure with tesh. Now a very large part of
3088 the code is tested not only by being run but also by checking that the
3089 output match an expected output [Mt].
3091 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
3092 is really less memory-demanding, which should allow you to use
3093 larger files in SimGrid [AL].
3095 * Inform valgrind about our contextes, so that it becomes usable
3096 with the default (and more effecient) version of SimGrid
3097 [contributed by Sékou Diakite, many thanks]
3100 * Introduce a listener thread in charge of receiving incoming
3101 messages from the network. It allows to overlap communication and
3102 computation but most notably, it removes some stupid deadlocks due
3103 to the fact that so far, a process could not send and receive at
3104 the same time. This made most non trivial communication schema
3106 * Convert the PIDs from long int to int to match the MSG ones (and
3107 linux ones too) [Mt]
3108 * New function: gras_agent_spawn() to launch a new process on
3109 current host. Only working in simulation for now. [Mt]
3110 * New function: gras_os_hostport() returning a constant form (ie,
3111 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
3114 * Make the backtrace of exceptions more human readable [Mt]
3115 * New module: xbt/str [Mt]
3116 a ton of string utility functions (split, join, printf to a newly
3117 allocated buffer, trim, etc)
3118 * New module: xbt/hash [Mt]
3119 SHA1 hashing algorithm (more to come if needed)
3120 * New module: xbt/synchro [Mt]
3121 synchronization tools (mutex and conditions) working the same way
3122 in simulation and in real life (mainly useful for GRAS, but not
3124 * New module: xbt/queue [Mt]
3125 classical producer/consumer synchronization scheme
3126 * xbt_dynar_new_sync() creates a synchronized dynar. All access
3127 (using the classical functions will get serialized) [Mt]
3128 * Make dictionary internal table dynamic. No need to specify its size
3129 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
3131 * Make sure the log channels are organized as a tree under windows
3132 (because of ANSI C compatibility issue, any channel were child of
3133 root directly) [Mt].
3136 * Cleaned many thing in surf and fixed a few bugs [AL].
3137 * Add a nice command line configuration mechanism to compose models [AL].
3138 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
3139 the previous one (KCCFLN05). It relies on something that looks like
3140 a max-min sharing mechanism but cannot be written as such. A new solver
3141 was thus designed [AL].
3142 * Add a new solver to lmm. Based on Lagrange optimization and
3143 gradient-based descent, it enables to efficiently maximise systems s.a
3145 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
3147 This solver enables to propose two new network models for TCP Reno and
3148 TCP Vegas based on Low's work. These models still need to be fully
3149 tested though [Pedro Velho].
3152 * Bug fix in SD_simulate. Now the time bound given as argument is
3154 * Use the new parallel task model (ptask_L07) as default.
3155 * Use the SURF command line configuration mechanism.
3156 * 0-size tasks (for synchronization) should now work.
3158 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
3160 SimGrid (3.2) stable; urgency=high
3164 We still experience issues on this platform, but we believe that at
3165 least MSG is usable.
3167 GRAS API BREAKAGE (for simplification purpose, sorry):
3168 * the gras_msgtype_by_name is not used anymore. Instead of
3169 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
3170 you can write (and must)
3171 gras_msg_send(toserver, "request", &request);
3172 - If you still want to pass a gras_msgtype_t to the function (to cache
3173 the type and avoid the lookup time), use the gras_msg_send_() variant.
3174 - Impacted functions:
3175 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
3176 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
3177 * The callbacks are now expected to return 0 when everything went well
3178 (just like the main() function)
3180 GRAS new features and improvements:
3181 * New module mechanism where user code can use per process globals [Mt]
3182 This is similar to gras_userdata_*() functions, but for libraries. It
3183 factorize some code developped over and over in the examples and AMOK.
3184 It has still to be documented and used (only amok/peermanagement is
3186 * Fix a vicious bug in the TCP buffering mechanism which leaded to message
3187 loss when they were small enough to fit into the buffer and sent quickly
3188 enough so that they can all get received in one shoot.
3189 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
3190 if not found. Use the *_or_null() variant for the old semantic.
3191 * In gras_msg_handle, do not discard messages without callback.
3192 They are probably messages to be explicitly awaited later (ie, proofs of
3193 mis-synchronization in userland since they are sent before being awaited)
3194 No big deal usually.
3195 * gras_socket_meas_send/recv: semantic changed!
3196 The numerical arguments used to be (1) the total amount of data to send
3197 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
3198 messages. This was need for the fool willing to send more than MAXINT
3199 bytes on quite fat pipes.
3202 * Do really rename the hostmanagement module to peermanagement. [Mt]
3203 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
3204 but this is rather new and this was documented in the module
3205 documentation (poor excuses, I admit)
3206 * Bandwidth measurement semantic changed! This follows the changes to
3207 gras_socket_meas_send/recv explained above.
3210 * A sequential mode has been added to the workstations. When a workstation
3211 is in sequential mode, it can execute only one task, and the other tasks
3212 are waiting in a FIFO. [Christophe Thiery]
3215 * The KCCFLN05 workstation model now handles parallel tasks. It is the
3216 model for SIMDAG. [Christophe Thiery]
3217 * Bug fix in the maxmin solver: Some values were close to 0 instead of
3218 equal to 0, which caused some bad behaviors in
3219 saturated_constraint_set_update. I now use a threshold mechanism like in
3223 * When running manually src/testall, you select specific units [Mt]
3224 testall is the result of our cunit mechanism, and should replace all
3225 the scripty thingy around since bash don't run easily on billware.
3227 * A mallocator system has been added. [Christophe Thiery]
3228 Mallocators allow you to recycle your unused objects instead of freeing them
3229 and allocating new ones.
3231 Documentation update:
3232 * FAQ reworking + New FAQs:
3233 - "Valgrind spits tons of errors!" [Mt]
3234 - "How to repport bugs" [Mt]
3235 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
3236 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
3237 - Communication time measurement within MSG [AL]
3238 - I experience weird communication times when I change the latency [AL]
3239 * GRAS tutorial [Mt]
3241 - an introduction to the framework and to the used communication model
3242 - an initiatic tour introducing the most proheminent features:
3244 . Lesson 0: Installing GRAS
3245 . Lesson 1: Setting up your own project
3246 o Part 2: Message passing
3247 . Lesson 2: Exchanging simple messages
3248 . Lesson 3: Passing arguments to the processes (in SG)
3249 . Lesson 4: Attaching callbacks to messages
3250 . Lesson 5: Using globals in processes
3251 . Lesson 6: Logging information properly
3252 . Lesson 7: Using internal timers
3253 . Lesson 8: Handling errors through exceptions
3254 . Lesson 9: Exchanging simple data
3255 . Lesson 10: Remote Procedure Calling (RPC)
3256 . Lesson 11: Explicitly waiting for messages
3257 . Recapping of message passing features in GRAS
3258 - A HOWTO section containing:
3259 o HOWTO design a GRAS application
3260 More are due, of course. They will come latter. In the meanwhile, you can
3261 check the examples which are still here.
3263 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
3265 SimGrid (3.1) stable; urgency=high
3269 There was a stack corruption somewhere, visible only when optimizing
3270 with these versions. [Vince]
3273 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
3274 module that enabled to play with Directed Acyclic Graphs. It is built
3275 directly on top of SURF and provides an API rather close to the old
3276 SG. Some old codes using SG are currently under rewrite to check that
3277 all needful functions are provided. [Christophe Thiery]
3280 * Complete rewrite of the KCCFLN05 workstation model. It is now an
3281 extension of the classical CLM03 model that gracefully handles
3282 failures. This is now the default model for MSG and GRAS. It doesn't
3283 handle parallel tasks yet though. [AL]
3284 * Bug fix: Weights were not correctly set in the network part.
3285 WARNING: This may have resulted in incorrect results with simulations
3286 where there are more than one flow on a given link. [AL]
3289 * After a (long ?) discussion on simgrid-devel, we have decided that the
3290 convention we had on units was stupid. That is why it has been decided
3291 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
3292 WARNING: This means that all previous platform files will not work as
3293 such with this version! A warning is issued to ask users to update
3295 A conversion script can be found in the contrib module of the CVS, under
3296 the name contrib/platform_generation/surfxml_update.pl [MQ]
3299 * Bug fix: Processes were started in reverse order, wrt deployment file.
3300 WARNING: if your code relies on this bug, please fix it. [AL]
3301 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
3302 being executed on two different locations. [AL]
3303 * Bug fix: Failures are now better supported thanks to Derrick's tests
3304 (there was many failure situations I hadn't thought of and that weren't
3305 correctly handled). [AL]
3306 * New function: MSG_host_is_avail indicates you whether a given m_host_t
3310 * New! a real RPC mechanism, as it ought to be since too long. [MQ]
3311 Exception occurring on server-side are propagated back to client (!).
3313 API CHANGE: the callback changed their prototype. Change:
3314 int my_handler(gras_socket_t expeditor, void *payload_data) {
3316 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
3317 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
3319 * New! function: gras_msg_handleall to deal with all messages arriving
3320 within a given period.
3321 * New! function: gras_socket_server_range to get a server socket in a
3322 range of port numbers (ease to avoid port number conflicts) [MQ]
3323 * New! gras processes display their backtrace when they get a SIGUSR1
3324 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
3325 Sweet to debug RL processes [MQ]
3329 - Do not force experiment sizes to be expressed in kb, or it becomes
3330 impossible to measure the latency this way (needs one byte-long tests)
3331 WARNING: this changes the amok_bw_* function semantic. [MQ]
3332 - Implements the link saturation stuff. [MQ]
3333 * Peer management module:
3334 New! module factorizing code that we wrote over and over [MQ].
3337 * New module: cunit (my jUnit implementation in ansi C) [MQ]
3338 - Test units are placed directly into the library code, they get extracted
3339 automatically and placed into the src/testall binary.
3340 - Convert most of the XBT tests to this system.
3341 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
3342 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
3343 live in the same C code. This required to change a little bit the API
3344 of surfxml parsing but shouldn't be an issue for end-users. [AL]
3345 * New module: sparse graph structure with basic algorithms (this is work
3346 in progress and the API is not considered to be frozen yet). [AL]
3347 * Display more information on backtraces: source line & function names are
3348 now displayed just like valgrind does (rely on addr2line tool) [MQ]
3349 * New function: xbt_backtrace_display(). Sweet while debugging [MQ]
3350 * Reworked a little bit some #include statements to load only required
3351 headers. Some user code that relied on SimGrid to include stdlib or
3352 stdio may need to include it by themselves. [AL]
3353 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
3355 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
3356 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
3357 but I guess that almost nobody used those parts. [MQ]
3359 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
3361 SimGrid (3.0.1) stable; urgency=low
3364 * Unfortunately, I had missed 5 misnamed functions:
3365 xbt_fifo_item_t xbt_fifo_newitem(void);
3366 void xbt_fifo_freeitem(xbt_fifo_item_t);
3367 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
3368 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
3369 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
3370 They're now deprecated. Please use their new versions:
3371 xbt_fifo_item_t xbt_fifo_new_item(void);
3372 void xbt_fifo_free_item(xbt_fifo_item_t);
3373 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
3374 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
3375 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
3377 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
3378 * Documentation: xbt_log module unmercifully reworked [MQ]
3379 * Bugfix: there was a problem with the ending of contexts with
3380 the pthread backend. It caused some weird deadlock or behavior
3381 depending on the pthread implementation. [AL]
3382 * Bugfix: get the exceptions raised in the simulator repport where
3383 and why they come from when they are not caught in time [AL, MQ]
3386 * Bugfix: Do repport the error when two non-connected hosts try to
3387 exchange data (Thanks to Flavien for stumbling into this one) [AL]
3390 * Add additionnal checkings on communications. Assert that two
3391 communicating hosts are connected by a set of links... [AL]
3394 * Add additionnal checkings on channel values in communication [AL]
3395 * New: MSG_task_get_source to see on which host a task was generated [HC]
3396 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
3397 the number of tasks waiting to be received on channel and sent
3399 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
3400 waits for the first task coming from a given host.. [AL]
3402 GRAS new functionnalities: [MQ]
3403 * Enhance the parsing macro to allow the size of multidimentional objects
3404 to be given thru annotations.
3405 * New example (and documentation): Matrix Multiplication a la RPC
3406 (as when I was young!) and fix a bunch of bugs found on the way.
3408 GRAS performance improvements: [MQ]
3410 * Reduce the amount of cbps creation/destruction by making it static to
3411 datadesc_send/recv() and using a (newly created) cbps_reset (based on
3414 * Change libdata to a set so that we can search for stuff by ID (and thus
3415 reduce the insane amount of dict lookups)
3418 * Actually implement gras_datadesc_copy() so that we don't have to mimick
3419 RL communication on top of SG since it's so uneffective.
3420 It may also be used for inter-thread communication in RL, one day.
3421 * Use gras_datadesc_copy() to exchange messages on top of SG
3423 - improve message exchange performance on top of SG
3424 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
3425 * Don't exchange on the network the size of the used part of buffer,
3426 instead, specify the possible buffer size to read().
3428 - reduces the amount of read/write calls (one pair per exchange)
3429 - reduces the amount of exchanged data (the size)
3430 - allows to retrieve all arrived data on receiver side, if we don't need
3431 it right now (subsequent read will peek the buffer)
3432 - allows the receiver to proceed with the beginning of the stream before
3433 everything is arrived
3434 - make it possible to build an iov transport (using readv/writev)
3436 - take care of the data with non-stable storage (like stacked data),
3438 * If possible, TCP send uses vector I/O (when writev() is here)
3439 - Don't use it for receive since we send data sizes and data on the
3440 same stream, so we wouldn't be able to chain large amount of chunks
3441 before having to flush the stuff to read the size.
3442 * Rework the transport plugin mechanism to simplify it and reduce the
3443 amount of pointer dereferencement when searching for the right function
3446 * I guess that now, we do almost as few system calls as possible while
3447 doing as few data copy as possible.
3449 To improve it further, we could try to send all the sizes first and then
3450 all the data (to use iov on receiving size), but it's only a partial
3451 solution: when you have 2 dimensional data, the sizes of the second
3452 dimension is data of the first dimension, so you need 3 streams.
3454 I'm not sure the potential performance gains justify the coding burden.
3456 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
3458 SimGrid (3.00) stable; urgency=high
3461 * New! Give the possibility to hijack the surf parser and thus bypass
3462 MSG_create_environment and MSG_launch_application. Have a look at
3463 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
3465 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
3467 SimGrid (2.96) unstable; urgency=low
3472 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
3473 This deprecates the xbt_error_t mechanisms.
3474 It modifies (simplifies) all XBT and GRAS API.
3475 MSG API keeps unchanged (exceptions raised by XBT are caught from
3476 within MSG and masked with existing error handling facilities)
3479 * New! Add a FATPIPE model. [AL]
3480 * New! Add a parallel task model. [AL]
3481 * New! Add automatically a loopback interface (in the default
3482 network model) if none was precised.
3485 * Bugfix: MSG_process_resume now works with the current running process.
3487 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
3488 * Modification of MSG_task_get_compute_duration. Once a task has been
3489 processed, the value returned by this function is now equal to 0. [AL]
3490 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
3491 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
3492 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
3493 of a m_task. For now, MSG_task_cancel only works with computation
3495 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
3496 of the processor (in Mflop/s) regardless of the current load on the
3498 * API Change: use proper naming convention for MSG_getClock and
3499 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
3501 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
3502 This function changes the priority of a computation task. This priority
3503 doesn't affect the transfer rate. A priority of 2 will make a task
3504 receive two times more cpu power than the other ones. This function
3505 has been added to suit the needs of Nguyen The Loc and hasn't been that
3506 much tested yet. So if it fails, please report it and send me your code.
3508 * API Change: removed all functions and types that were marked "deprecated"
3509 since many months. Renamed MSG_global_init_args to MSG_global_init.
3511 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
3513 SimGrid (2.95) unstable; urgency=low
3516 * Steal some nice code to GNU pth to fix context detection and usage [AL]
3517 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
3518 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
3521 * Bugfix: Allow absolute paths for platform description files [MQ]
3522 * Bugfix: do free the variables after use. Leads to drastic performance
3524 * Implement max_duration (ie, timeouts) on resources [AL]
3527 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
3529 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
3530 the needed support (timeouts) [AL]
3533 * Implement measurement sockets. You can now get the bandwidth between two
3534 hosts thanks to AMOK (see below). [MQ]
3535 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
3536 dynar over the network (yeah) [MQ]
3537 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
3538 * simple/static token-ring example. [Alexandre Colucci and MQ]
3539 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
3540 in place before [MQ]
3543 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
3544 type parsing. "short" and "long" modifiers were also ignored; other
3545 modifier (such as reference level) are still ignored. [MQ]
3546 * Embeed the buffer size within the buffer itself on SG. [MQ]
3547 That way, send() are atomic and cannot get intermixed anymore (at least
3548 the ones which are less than 100k; bigger messages still have the issue)
3549 * Array size pushed by the field, not by the field type (or each
3550 and every long int will push stuff to the cbps) [MQ]
3551 * use select() to sleep since it allows to portably sleep less than one
3554 GRAS (minor cleanups)
3555 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
3558 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
3559 * type category 'ignored' killed as it was never used and were difficult
3561 * whether a type can cycle or not is now a flag, leaving room for more
3562 flags (as "ignored", if we feel the need one day ;)
3563 * Rename raw sockets to measurement sockets since "raw" has another
3564 meaning in networking community.
3567 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
3568 and offers features not belonging to GRAS but that most applications
3569 need. One day, it may be a set of plugins loadable at runtime.
3570 * New module: bandwidth
3571 bandwidth measurement between arbitrary nodes running this module. [MQ]
3573 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
3575 SimGrid (2.94) unstable; urgency=low
3577 The first beta release of SimGrid 3 !
3581 * Update the main page and the FAQ. Adding references to gforge.
3584 * Add a gras_os_getpid function.
3587 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
3588 * Extend the logs so that they also print PID, hostname, date, ... if
3590 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
3591 and kill the old version which were in testsuite/
3592 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
3596 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
3597 for users. Instead, each programming environment (GRAS, MSG,...) use it
3598 when needed to provide such a feature to users.
3599 Don't shortcut the mechanism or you will also shortcut the virtualization
3600 you need on the simulator.
3604 * Cleanups in configury with regard to compile optimization/warning flags.
3605 Also add -fno-loop-optimize to any powerpc since it's the optimization
3606 killing gcc (< 3.4.0).
3607 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
3608 needed by MSG examples complications
3609 * Borrow configury beautifications from PHP
3612 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
3613 warning (thanks loris for stumbling into this one).
3614 * Bugfix: stop loading private headers (gras_config.h) from the public
3618 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
3619 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
3620 RL would imply a DNS resolver, which is *hard* to do in a portable way
3621 (and therefore delayed).
3622 * Implement a real timer mechanism and use it in timing macros. This allows
3623 to avoid rounding errors and get a 0.000005 sec precision in timing
3624 macros. While I was at it, various cleanups:
3625 - allow to declare more than one timed section per file (fix a stupid bug)
3626 - move some private declaration to the right place
3627 - merge conditional execution and timing macros into emulation module
3628 - document the module
3629 - make sure the module cleanups its mess on gras_exit
3630 * Documentation improvements:
3631 - (new) how to compile applications using GRAS
3632 - (new) emulation support (timing macros)
3634 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
3636 SimGrid (2.93) unstable; urgency=low
3638 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
3641 - Use Paje properly where used. Still to be sanitized properly.
3642 - Portability fix: Add an implementation of the contexts using pthread
3646 - Add xbt_procname(): returns the name of the current process.
3647 Use it to show the current process's name in all logging.
3649 - fix detection of older flex version and the reaction, since we do
3650 depend on modern ones (we use lex_destroy)
3651 - Better separation of SG and RL in the libs: remove all simulation code
3652 from libgras. As a result, this lib is now only 200k when stripped.
3653 Some of the xbt modules may also be duplicated (two sets and such) and
3654 should be cleaned/killed before SG3.
3655 - Insist on using xlC on AIX because of weird problems involving gcc there.
3656 - Cleanup the make remote stuff. This is now done by scripts
3657 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
3658 mainly for our private use, but we're working on changing them to user
3661 - Bugfix: flush the socket on close only if there is some *output*.
3662 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
3664 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
3667 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
3669 SimGrid (2.92) unstable; urgency=low
3671 Alpha 3 on the path to SimGrid 3
3675 - New! First try of benchmarking macros.
3676 - New! First try so that gras_stub_generator generate deployment and
3677 remote compilation helpers.
3679 - Bugfix: Initialization fix in msg_test.
3683 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
3685 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
3687 - API Change: gras_os_sleep to take the amount of seconds as a double.
3688 Accepting an int was error prone since it was the only location where
3689 seconds were coded as such. It leaded to damn rounding errors.
3690 - Bugfix: Hard to belive that timers ever worked before this.
3692 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
3694 SimGrid (2.91) unstable; urgency=low
3696 Alpha 2 on the path to SimGrid 3
3700 - Bug fix in the lmm_solver.
3702 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
3703 through the function MSG_paje_output.
3704 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
3705 - It is possible to bound the rate of a communication in MSG with
3706 MSG_task_put_bounded() (was already in the previous version but I had forgotten
3707 to write it in the changelog).
3708 - Bug fix to let GRAS run on top of MSG until we move it directly on top
3713 - Various cleanups to the autotools stuff
3714 - Begin to move Gras examples to examples/gras/
3715 - Let make distcheck work again (yeah!)
3717 - documentation overhauled using doxygen.
3718 gtk-doc-tools is dead in SimGrid now.
3719 - Automatically extract all existing logging categories, and add the list
3720 to the documentation (long standing one, to say the less)
3722 - Cleanup the known architecture table. Reorder the entries to group what
3723 should be, and use a more consistent naming scheme.
3724 (some of the test dataset are still to be regenerated)
3725 - New! Allow library to register globals on each process just as userdata
3727 This is implemented using a xbt_dict and not a xbt_set, so we loose the
3728 lookup time (for now).
3729 Use it in msg and trp.
3730 This cleans a lot the internals and helps enforcing privacy of the
3731 headers between the gras components.
3732 - New! Add a timer mechanism, not unlike cron(8) and at(1).
3733 - Bugfix: gras_os_time was delirious in RL.
3734 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
3736 - Reenable GRAS now that it works.
3738 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
3740 SimGrid (2.90) unstable; urgency=low
3742 Alpha 1 on the path to SimGrid 3
3744 * It is a long time since the last release of SimGrid. I'm sorry about
3745 that but as I had told you, I was rewriting a lot of things. I apologize
3746 to those who had been reporting bugs to me and that I had not answered.
3747 If your bug is still in the new version, please tell me. Here is a
3748 summary of the main changes.
3750 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
3751 lead by Martin Quinson. As a consequence SimGrid gains a lot in
3752 portability, speed, and a lot more but you'll figure it out later.
3753 SimGrid now comprises 3 different projects: MSG, GRAS and SMPI.
3754 I wanted to release the new MSG as soon as possible and I have
3755 broken GRAS, which is the reason why, for now, only MSG is fully
3756 functional. A laconic description of these projects is available
3757 in the documentation.
3759 * REVOLUTION 2: I have removed SG and I am now using a new simulation
3760 kernel optimized for our needs (called SURF but only the developers
3761 should use it). Hence, MSG is now roughly 30 times faster and I think
3762 that by rewriting a little bit MSG, I could event speed it up a little
3763 bit more. Beside the gain in speed, it is also much easier to encode a
3764 new platform model with SURF than it was with SG. More to come...
3766 * REVOLUTION 3: I have tried to change a little as possible the API of
3767 MSG but a few things really had to disappear. The main differences
3768 with the previous version are:
3769 1) no more m_links_t and the corresponding functions. Platforms are
3770 directly read from a XML description and cannot be hard-coded
3771 anymore. The same format is used for application deployment
3772 description. The new format is described in the documentation.
3773 Have a look in tools/platform_generation. There is a tiny script
3774 that converts from the old platform format to the new one. Concerning
3775 the application deployment format, parsing the old one is tricky.
3776 I think most of you should however be able to convert your files. If
3777 it is really an issue, I can write a C code that does the conversion.
3779 2) the toolbox tbx does not exist anymore. We now have a library
3780 with much more data-structures but without the hash-tables (we have
3781 dictionaries that are much faster).
3783 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
3785 *****************************************************************************
3786 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
3787 * don't feel like converting the oldies. (Mt) *
3788 *****************************************************************************
3791 Version 2.90: "the long awaited one"
3792 - Finished rewriting and debugging MSG. Rewrote the documentation.
3793 - disable GRAS for now since it needs to be ported to the newest SG
3796 - Finish the port to windows (using mingw32 for cross-compile)
3799 - Main loop and datastructures of SURF. A cpu resource object is
3800 functional. Surf can thus be used to create cpu's with variable
3801 performance on which you can execute some actions.
3803 2004-11-15 Martin Quinson
3804 - Port to ARM. Simply added the alignment and size descriptions. Should
3805 work, but the ARM machines are so slow that I didn't had the opportunity
3806 to 'make check' over there yet.
3808 2004-11-15 Arnaud Legrand
3809 - Trace manager now written. It uses a heap structure and is therefore
3810 expected to be efficient. It may however be speeded up (particularly
3811 when many events occur at the same date) by using red and black
3812 trees. One day maybe...
3813 - Max-min linear system solver written. It uses a sparse matrix
3814 structure taking advantage of its expected use. Most operations are
3815 O(1) and free/calloc are called as few as possible. The computation of
3816 the minimum could however be improved by using a red and black tree
3819 2004-11-03 Arnaud Legrand
3820 - Rename every gras_* function that was in xbt/ to its xbt_
3822 - Add a heap and a doubly-linked list to xbt
3823 - Added a dichotomy to the dictionaries. make check works as well before
3824 so I assume that the patch is correct. I do not know however if things
3825 run effectively faster than before now. :)
3827 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
3828 SimGrid, and the version number is bumped to 2.x
3830 2004-10-29 Martin Quinson
3831 - Introduction of the remote errors.
3832 They are the result of a RMI/RPC on the remote machine.
3833 ErrCodes being scalar values, you can't get the host on which those
3834 errors did happen. Extending the error mechanism as in Gnome is possible.
3835 No idea yet whether it is a good idea.
3837 2004-10-28 Martin Quinson
3838 - Interface revolution: the Starred Structure Eradication.
3839 I used to do typedef struct {} toto_t; and then handle *toto_t.
3840 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
3841 - ???_t is a valid type (builded with typedef)
3842 - s_toto_t is a structure (access to fields with .)
3843 - s_toto is a structure needing 'struct' keyword to be used
3844 - e_toto_t is an enum
3845 - toto_t is an 'object' (struct*)
3847 typedef struct s_toto {} s_toto_t, *toto_t;
3848 typedef enum {} e_toto_t;
3849 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
3850 s_toto_t) is private.
3852 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
3853 so that it can set the variable to NULL. It was so for dicts and sets,
3854 it changed for dynars.
3856 - Fix a bunch of memleaks in dict_remove
3857 - Fix a bug in sg/server_socket opening: it failed all the time.
3859 2004-10-07 Martin Quinson
3860 - Speed up dynar lookup operation a bit.
3862 gras_dynar_get is dead.
3864 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
3865 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
3866 (which gives you the address of the stored data).
3868 gras_dynar_get_as is an helpful macro which allows you to retrieve a
3869 copy of the data using an affectation to do the job and not a memcpy.
3871 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
3872 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
3874 It does not really speedup the dynar test because they are
3875 setting elements all the time (and look them seldom). But the dict does
3876 far more lookup than setting.
3878 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
3880 2004-10-05 Martin Quinson
3881 - Allow to (en/dis)able the cycle detection at run time.
3883 Whether we should check for cycle or not is now a property of each
3884 datatype. When you think there may be some cycle, use datadesc_cycle_set.
3885 datadesc_cycle_unset allow to remove this property when previously set.
3887 Note that the cycle detection is off by default since it impacts the
3888 performance. Watch the data you feed GRAS with ;)
3890 This property is hereditary. Any element embedded in a structure having it
3891 set have it set for the time of this data exchange.
3893 You should set it both on sender and receiver side. If you don't set it on
3894 sender side, it will enter an endless loop. If you forget on receiver
3895 side, the cycles won't be recreated after communication.
3897 - Header reorganization.
3898 Kill gras_private.h, each submodule must load the headers it needs.
3900 2004-10-04 Martin Quinson
3901 - Interface revolution: do not try to survive to malloc failure.
3903 Now, gras_malloc and friends call gras_abort() on failure.
3904 As a conclusion, malloc_error is not a valid error anymore, and all
3905 functions for which it was the only gras_error_t return value are
3906 changed. They now return void, or there result directly.
3907 This simplify the API a lot.
3909 2004-09-29 Martin Quinson
3910 - Re-enable raw sockets.
3911 Created by gras_socket_{client,server}_ext;
3912 Used with gras_raw_{send,recv}
3915 It should allow to kill the last bits of gras first version soon.
3917 This is not completely satisfactory yet (duplicate code with
3918 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
3921 - Simplify transport plugin (internal) interface by not passing any
3922 argument to _server and _client, but embedding them in the socket
3925 2004-09-28 Martin Quinson
3926 - Finish the port to AIX.
3927 autoconf was my problem (segfault within the malloc replacement
3928 function. No idea why)
3930 2004-09-16 Martin Quinson
3931 - Fix some size_t madness on 64bit architectures.
3933 2004-09-08 Martin Quinson
3934 - Reduce the number of system headers loaded, overload some more system
3935 calls (such as malloc to cast the result of the system one, and work
3937 - Fix and reintroduce the config support
3939 2004-09-07 Martin Quinson
3940 - Source code reorganization to allow Arnaud to surf all over there.
3941 - Allow to document the logging categories.
3942 - Remove all uppercase from logging categories and useless cleanup in names.
3944 2004-08-18 Martin Quinson
3945 Version 0.6.2 (protocol not changed; API changed)
3946 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
3947 gras_error_t), and NULL when not found. Functions expecting a msgtype
3948 as argument (msg_wait; msg_send) deal with NULL argument by providing a
3949 hopefully usefull message.
3950 - Portability to prehistoric sparcs again
3952 2004-08-17 Martin Quinson
3953 Version 0.6.1 (protocol not changed; ABI not changed)
3954 - prealloc some buffers to speed things up
3956 2004-08-11 Martin Quinson
3957 Version 0.6 (protocol not changed; ABI expended)
3958 - The parsing macro can deal with the references, provided that you add
3959 the relevant annotations (using GRAS_ANNOTE(size,field_name))
3961 2004-08-09 Martin Quinson
3962 Version 0.5 (protocol not changed; ABI changed)
3963 - Allow to off turn the cycle detection code in data exchange at
3964 compilation time. It should be at run time, but I'm short of time (and
3965 the config stuff is still broken). That way, we keep dict out of the
3966 critical path, which is good because the performance is poor:
3967 - search not dichotomial yet
3968 - dynar give no way to access their content and memcpy everytime
3969 - In composed data description (struct, ref and so on), stop foolness of
3970 keeping the subtype's ID, but store the type itself. This keeps sets out
3971 of the critical path, which is good since they rely on dynar and
3972 dictionaries. The only loose of that is that we cannot detect the
3973 redeclaration of a structure/union with another content (but I'm not sure
3974 the code detected well this error before anyway). We still can detect
3975 the redefinition discrepancy for the other types.
3976 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
3977 it breaks the code because of type-punning used all over the place).
3978 This breaks on all non-gcc architectures (for now).
3980 All those changes (plus the buffer of last time) allow me to gain 2 order
3981 of magnitude on cruel tests consisting of 800000 array of integers on two
3982 level of a hierarchical structure (200 secondes -> 4 secondes)
3985 - the selector of reference must now return the type it points to, not
3986 the ID of this type.
3988 2004-08-06 Martin Quinson
3989 Version 0.4 (protocol changed; ABI not changed)
3990 - Allow to pass --gras-log argument to processes in simulation mode. Really.
3991 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
3992 - Implement a buffer transport, and use it by default (it relies on tcp in
3993 real life and on sg in simulation).
3994 That's a bit hackish since I had a new field to the structure to store
3995 its data without interfering with the subtype ones. Inheritance
3996 is tricky in C. And that's a kind of reverse inheritance with one class
3997 derivating two classes. Or maybe a game with java interfaces. Anyway,
3998 that's damn hard in C (at least).
3999 Moreover, I got tired while trying to ensure plugin separation and
4000 genericity in SG mode. MSG wants me to do weird things, so let's go for
4001 cruel hacks (temporarily of course ;).
4002 See comment in transport_private.h:71
4003 - do not include all the _interface headers in private but in the files
4004 which really need them (to cut the compilation time when they are
4007 2004-07-26 Martin Quinson
4008 Version 0.3 (protocol not changed; ABI changed)
4009 - Major overhault of the datadesc interface to simplify it:
4010 - shorted the function names:
4011 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
4012 - add a trivial way to push/pop integers into the cbps without malloc.
4013 This allows to make really generic sub_type description, which simply
4014 pop their size of the stack.
4015 - add a function gras_datadesc_ref_pop_arr() which does what users want
4016 most of the time: Declare a dynamic array (which pops its size of the
4017 stack) and declare a reference to it. Poor name, but anyway.
4018 - kill the post-send callback, add a post-receive one
4020 2004-07-23 Martin Quinson
4021 Version 0.2 (protocol changed; ABI changed)
4022 - add some testing for cpbs in the test cases, and fix some more bugs.
4023 This invalidate again the little64 data file, since I cannot regenerate
4025 - remove an awfull optimization in the logging stuff, allowing me to:
4026 - understand it again
4027 - learn gcc how to check that the argument match the provided format
4028 - fix all errors revealed by gcc after that
4029 - internal keys of dict are not \0 terminated. Deal with it properly in
4030 loggings instead of segfaulting when the user want to see the logs :-/
4032 2004-07-22 Martin Quinson
4033 - Fix some stupid bug preventing cbps (callback postit) from working
4035 2004-07-21 Martin Quinson
4036 - Some documentation cleanups
4037 - remove the useless last argument of msgtype_declare
4038 - rename the Virtu functions to fit into the 'os' namespace
4039 - move headers src/include -> src/include/gras/ and stop fooling with
4040 gras -> . symbolic link
4041 - make distcheck is now successful
4043 2004-07-19 Martin Quinson
4045 - Build shared library also
4046 - Install html doc to the right location
4047 - stop removing maintainer files in make clean
4048 - build tests only on make check
4050 2004-07-13 Martin Quinson
4052 - No major issue in previous version => change versioning schema
4053 - Re-enable little64 convertion test now that Abdou kindly regenerated the
4054 corresponding dataset.
4056 2004-07-11 Martin Quinson
4058 - Get it working with any kind of structure (we can compute the padding
4059 bytes remotely for all the architectures I have access to)
4060 - Implement the structure parsing macro (still not quite robust/complete)
4061 - Improvement to the remote testing toysuite
4063 2004-07-10 Martin Quinson
4064 [autoconf mechanism]
4065 - get ride of a bunch of deprecated macros
4066 - actually run the test for two-compliment, not only compile it :-/
4067 - test whether the structures get packed (and bail out if yes. Damn.
4068 Alignment is a serious matter)
4069 - test whether the structures get compacted (but respecting the alignment
4070 constraints of each types)
4071 - test whether the array fields of structures can straddle alignment boundaries
4073 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
4074 (took me 2 hours to find that bug, looking at the wrong place)
4075 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
4076 before sending/receiving and are used to compute the offsets of fields
4077 - Given that padding size depend even on compiler options, keep track of
4078 alignment and aligned_size only for the current architecture. Not a big
4079 deal since we send structure fields one after the other (seems
4081 - Add the datastructure used for IEEE paper by the PBIO guys to the test
4082 program, let it work on linux/gcc/little32. portability todo.
4084 2004-07-08 Martin Quinson
4085 - import and improve remote compilation support from FAST
4086 - make sure make check works on half a dozen of machines out there
4088 2004-07-07 Martin Quinson
4089 Let's say it's version 0.0.3 ;)
4090 - Implement conversions (yuhu!)
4091 - Let it work on solaris (beside conversion, of course)
4092 - Stupid me, using rand() to generate the conversion datatests in not wise.
4094 2004-07-06 Martin Quinson
4095 - Let make dist work, since I'm gonna need it to compile on remote hosts
4096 - Let Tests/datadesc_usage write the architecture on which the file was
4097 generated as first byte.
4098 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
4099 architecture descriptions.
4100 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
4101 on those architectures.
4102 - Optimization: send/recv array of scalar in one shoot
4104 2004-07-05 Martin Quinson
4105 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
4107 - Plug a whole bunch of memleaks
4108 - each process now have to call gras_{init,exit}. One day, their log
4109 settings will be separated
4110 - Continue the code factorisation between SG, RL and common in Transport.
4112 2004-07-04 Martin Quinson
4114 - Redistribution between SG and RL.
4115 We wanna have to accept in SG, so move accepted related parts of RL in
4116 the common part. (more precisely, the dynar of all known sockets is no
4117 more a static in transport.c, but part of the process_data)
4119 [gras_stub_generator]
4120 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
4122 2004-07-03 Martin Quinson
4123 - Create a new log channel tbx containing dict, set, log, dynar (to shut
4124 them all up in one shot)
4126 - Fix the ugly case of reference to dynamic array.
4127 - New (semi-public) function gras_datadesc_size to allow the messaging
4128 layer to malloc the needed space for the buffer.
4130 - gras_socket_close now expect the socket to close (and not its address to
4131 put NULL in it after it). This is because the socket passed to handlers
4132 is one of their argument (=> not writable).
4134 - propagate the interface cleanup from last week in datadesc, ie remove a
4135 superfluous level of indirection. User pass adress of variable
4136 containing data (both when sending and receiving), and not of a variable
4137 being a pointer to the data. Let's say that I like it better ;)
4138 The price for that is constructs like "int msg=*(int*)payload" in
4139 handlers, but it's a fine price, IMHO.
4141 - Let it work in RL (yuhu)
4143 2004-06-21 Martin Quinson
4145 - porting SG plugin and SG select to new standards (works almost).
4146 - plug memleaks and fix bugs around.
4149 - cleanup the prototype of data recv and force users to specify when they
4150 want to handle references to objects. Test case working even for cycles.
4151 - plug memleaks. Valgrind is perfectly ok with this.
4153 2004-06-12 Martin Quinson
4155 - cleanup the separation between plugin and main code in plugin creation
4157 2004-06-11 Martin Quinson
4159 - Reput hook for raw sockets, needed for BW experiments
4160 - kill a few lines of dead code
4161 [Data description] Interface cleanup
4162 - gras_datadesc_by_name returns the searched type or NULL.
4163 That way, no variable is needed to use a type desc once, which makes
4165 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
4166 two parameters were strings (field name, type name), leading to
4168 [Dicos] Interface cleanup
4169 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
4170 This is consistant with the dynar API.
4172 2004-04-21 Martin Quinson
4174 - Porting to new standards.
4176 - interface cleanup.
4177 There is no bag anymore, no need to take extra provision to mask the
4178 pointers behind "ID".
4179 Better splitup of functions between files create/exchange/convert.
4180 This is still a bit artificial since convert and receive are so
4181 interleaved, but anyway.
4183 - add a queued message list to procdata (the ones not matching criteria
4185 - factorize some more code between SG and RL wrt procdata
4187 - use gras_exit in example to track memleaks
4188 - get rid of gs_example now that GS is properly integrated into gras
4189 - update run_test to integrate the latest tests (datadesc)
4191 - rename WARNINGn macros to WARNn since it prooved error-prone
4193 2004-04-19 Martin Quinson
4195 - register init/exit functions within gras module mechanism
4196 - send/receive function.
4197 Convertion is not implemented, but short-cutted if not needed.
4198 struct/array elements are sent one by one (instead of block-wise), but
4199 nobody really cares (yet). Get a prototype before optimizing.
4200 - tests (using a file socket) for DD send/receive on:
4201 - base types: int, float
4202 - array: fixed size, string (ie ref to dynamic string)
4203 - structure: homogeneous, heterogeneous
4204 - chained list, graph with cycle
4205 Believe it or not, valgrind is not too unhappy with the results. The
4206 cycle happily segfaults, but the others are ok. And I'm sick of pointers
4210 - Bugfix when using a filename explicitly (instead of '-')
4212 2004-04-09 Martin Quinson
4214 - factorize more code between RL and SG in socket creation
4215 - Complete the implementation and tests of:
4217 o file (only in RL, and mainly for debugging)
4219 I lost 3 days to design a portable address resolver, and then decided
4220 that the prototype mainly have to run on my box.
4221 Addressing portability too early may be like optimizing too early :-/
4223 - use gras_init in the Tests instead of the crappy parse_log_opt
4224 (the latter function is removed)
4225 [Conditional execution]
4226 - New functions: gras_if_RL/gras_if_SG (basic support for this)
4227 [Code reorganisation]
4228 - Get rid of libgrasutils.a since it makes more trouble than it solves.
4229 Build examples against the RL library, since there is no way to disable
4230 its creation for now.
4232 For information, the beginning of coding on GRAS was back in june
4233 2003. I guess that every line has been rewritten at least twice since