1 ----------------------------------------------------------------------------
3 SimGrid (3.26.1) NOT RELEASED YET (v3.27 expected March 20. 2021, 09:37 UTC)
6 - Removed some option aliases that were deprecated since v3.23 (June 2019)
7 - 'verbose-exit' is now 'debug/verbose-exit'
8 - 'simix/breakpoint' is now 'debug/breakpoint'
9 - 'clean-atexit' is now 'debug/clean-atexit'
12 - Define new template functions Mailbox::get_unique(), returning a std::unique_ptr.
13 - Functions Mailbox::get() and Mailbox::get_async() are now templated with the
14 type of the pointee. Untyped functions are deprecated. Use Mailbox::get<void>()
15 or Mailbox::get_async<void>() if you really want to play with void*.
16 - Unify the interface of Activity::on_{start/activity}
17 - New function: Comm::get_dst_data()
18 - New function: Comm::set_payload_size() to set the amount of bytes to simulate.
19 - New functions: Comm::sendto_{init,async} to initiate a communication
20 on between two (possibly remote) hosts.
23 - New section: Configuring the logs from the command line.
24 - New section: Programming API of logs.
26 ----------------------------------------------------------------------------
28 SimGrid (3.26) December 15. 2020
30 The Release release (the French lockdown was eased today).
32 Important user-visible changes:
33 - SimGrid now requires a compiler with C++14 support.
34 Sibling projects should upgrade their FindSimgrid.cmake
35 - Surf precision default value is now 1e-9, instead of 1e-5. This was changed as
36 several users had difficulties to understand issues when using high bandwidth or
37 small latency events. The new value was already the default for SMPI and
38 should not cause too much performance hit. It can change some simulation
39 timings if simulation was skipping a lot of small events (which was actually
40 an issue per see). The old value can be restored with --cfg=surf/precision:1e-5.
41 - On some network models (L07, CM02, LV08), an implicit loopback link is created
42 for local communication. Default bandwidth was 500MBps and latency was 15µs,
43 which was rather bad. Default values have been changed to 10GBps and 0 latency.
44 Options network/loopback-lat and network/loopback-bw have been added to adapt
45 these values if needed. Network and routing models already providing separate
46 loopbacks (clusters and such) are not impacted by this change.
47 - SMPI now adds 16 bytes of header to each message sent, in order to simulate
48 metadata that are added to each MPI message by MPI libraries (tag,
49 src/dest, and communicator information). This may change simulation times
50 for very small message sizes, but should be more realistic.
53 - New routing 'WiFi' that makes it easier to specify a wifi network zone.
54 - New plugins: wifi_energy and link_load. See the associated examples.
55 - New examples: wifi networks, and communication suspend.
58 - LTO is now enabled for Intel/clang compilers.
59 - LTO behavior on GCC can be parameterized using LTO_EXTRA_FLAG in cmake.
60 Setting it to "auto" will use all available cores, while setting it to n will
61 use n cores to speedup link step (usage: cmake -DLTO_EXTRA_FLAG=4).
62 - Remove obsolete runtime option 'contexts/parallel-threshold'.
63 - Runtime option 'tracing/msg/process' renamed to 'tracing/actor'. The old name
64 has been kept for compatibility.
65 - Finally remove obsolete snake_case() aliases for runtime options.
66 - Further improve the documentation.
69 - the on_exit() of each actor is also executed when the simulation deadlocks.
70 - New functions: s4u::Activity:: suspend(), resume() and is_suspended()
71 An example is provided for s4u::Comm but it should work with Exec and Io.
74 - Update proxy apps coverage of new ECP apps: 60+ apps now tested nightly on
75 https://framagit.org/simgrid/SMPI-proxy-apps
76 - MPI/IO: supports names starting with "./"
77 - Fortran: many MPI/IO bindings, support for MPI_UB/LB, C MPI_INT/FLOAT/DOUBLE
79 - smpicc/cxx/ff/f90 now will actually perform definition checks at link time. When
80 building shared libraries, this may cause issues, so environment variable
81 SMPI_NO_UNDEFINED_CHECK can be added to disable this.
82 - most temporary files should now be created in /tmp dir (or equivalent).
83 If this one does not allow execution of code (noexec flag), this may cause issues.
84 Please use another tmp directory (using TMPDIR or equivalent system variable)
88 - A large refactoring is ongoing, but this should be transparent for users so far.
91 - Drop xbt_str_split().
93 C binding and interface:
94 - The return type of the sg_actor_on_exit() callbacks is now 'void'
95 (int value was previously ignored)
96 - Many C functions were renamed to follow a common naming style
97 (sg_object_get_something and sg_object_set_something). As usual, the deprecated
98 names are kept until version 3.30.
99 - Many MSG tests were converted to the new S4U's interface in C, that
100 was extended for that.
102 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
103 (FG: issues on Framagit; GF: issues on GForge; GH: issues on GitHub)
104 - FG#41: Add sg_actor_create C interface
105 - FG#43: xbt::random needs some care
106 - FG#48: The Impossible Did Happen (yet again)
107 - FG#50: Suspending an actor executed at the current timestamp fails
108 - FG#52: Zero-seconds timeout : "That's in the past already"
109 - FG#53: Crash while using ns-3 network model
110 - FG#54: How to suspend a comm?
111 - FG!22: Stochastic Profiles
112 - FG!24: Documentation and fix for xbt/random
113 - FG!35: Add a modeling hint for parallel links in doc
114 - FG!36: [xbt/random] Read/Write the state of the RNG
115 - FG!42: Link cumulated load plugin
116 - FG!44: Test condition variable wait_until+notify_all
117 - GF#18137: Allow different stack sizes?
118 - GH#128: Parallelization of simulation with --cfg=contexts/nthreads
119 - GH#139: Allow pthread creation in SMPI
120 - GH#336: Packet-level simulation using SMPI?
121 - GH#345: Error in the LMM while migrating a VM
122 - GH#346: [SMPI] error while loading shared libraries: libsimgrid.so
123 - GH#352: pip install / python setup.py install fail to find pybind11
124 - GH!337: Fix link_energy plugin for wifi platforms
125 - GH!339: Add Mailbox set_receiver method to python binding
126 - GH!344: Cast hugepages macros parameters to int64
128 ----------------------------------------------------------------------------
130 SimGrid (3.25) February 2. 2020 (aka 02 02 2020)
132 The Palindrom Day Release.
134 Important user-visible changes:
135 - Improve the Python usability (stability and documentation).
136 - A nasty synchronization bug was ironed out, see also below.
137 - Python's doc was organized as a separate tree, now integrated with C++.
138 - C bindings of S4U were not part of the doc.
139 - The C++ doc was also improved as methods are now split by theme.
140 - Further deprecate MSG: you now have to pass -Denable_msg=ON to cmake.
141 - This is mandatory to use the Java bindings.
142 - OFF by default; The plan is to completely remove MSG by 2020Q4 or 2021Q1.
143 - SimDAG++: Automatic dependencies on S4U activities (experimental)
144 - Some features are already implemented but not all of them
145 - Cannot block an activity until it's scheduled on a resource
146 - No heterogeneous wait_any() that would mix Exec/Comm/Io activities.
147 - See examples/s4u/{io,exec,comm}-dependent for what's already there.
150 - Upgrade documented Java dependency to Java 8 (earlier versions don't work).
151 - Drop support for Viva/Triva (old visualization tools), hence removed
152 TRACE_get_node_types() and TRACE_get_edge_types() functions.
155 - Require pybind11 version 2.4.
156 - Greatly improve locking during context switches with Python.
157 - Declaring Python callbacks to this_actor::on_exit is now working.
158 - No more tests are failing currently, even on win32.
161 - Actor: Merge signals on_migration_start/end into on_host_change
162 - Actor: Rename migrate() into set_host()
163 - Disk: Allow users to get the read and write nominal bandwidth values
164 - Exec: Implement wait_for(timeout)
165 - Io: Implement wait_for(timeout)
168 - Parse errors now raise a simgrid::ParseError that you may want to catch.
171 - In simgrid::kernel::resource::Model, the methods next_occuring_event*() have
172 been renamed to fix a spelling error. As usual, the previous definitions are
173 kept with a deprecation warning. However, to avoid runtime errors, it is now
174 forbidden to override these deprecated methods in a derived class. Please use
175 the new names immediately if you need to override them.
178 - Remove unused parameter 'free_ctn' for xbt_dict_set() and xbt_dict_set_ext().
179 - Drop unused functions for dicts and dynars: xbt_dict_cursor_get_elm,
180 xbt_dict_get, xbt_dict_get_elm, xbt_dict_get_ext, xbt_dict_get_key,
181 xbt_dict_remove, xbt_dict_reset, xbt_dynar_compare, xbt_dynar_dump,
182 xbt_dynar_foreach_ptr, xbt_dynar_free_data, xbt_dynar_free_voidp,
183 xbt_dynar_init, xbt_dynar_insert_at_as, xbt_dynar_merge,
184 xbt_dynar_remove_n_at, xbt_dynar_replace, xbt_dynar_search, xbt_dynar_set.
185 - New module: random, providing classical random numbers generators.
188 - New option : "smpi/auto-shared-malloc-thresh" which sets a value for
189 allocations' size above which they are considered "shared" by default (as if
190 they were performed through SMPI_SHARED_MALLOC macros).
191 Default = 0 = disabled feature.
192 Note : malloc, calloc and free are now overriden by smpicc/cxx by default.
193 This can cause some troubles if codes are already overriding these. If this
194 is the case, defining SMPI_NO_OVERRIDE_MALLOC in the compilation flags can
195 help, but will make this feature unusable.
196 - Input check is now performed much more consistently and outputs precise
197 warnings for each error found
198 - New supported calls : MPI_File_set_view, MPI_File_get_view
199 - MPI I/O now only supports disks, as storage is discontinued.
200 - MPI I/O allows opening files without specifying absolute path
201 - Note : SMPI configuration options are now initialized by smpi_init_options()
202 call, which should be called if SMPI is not being used through smpirun.
204 Fixed bugs (FG#.. -> framagit bugs; FG!.. -> framagit merge requests):
205 - FG#9: Python bindings crashing
206 - FG#39: Missing s4u::Comm::wait_any_for example
207 - FG#42: Add support for ThreadSanitizer (TSan)
208 - FG!19: Removing RngStream
209 - FG!20: A module for RNG calls
210 - FG!21: Choice between ad-hoc and standard distributions implementations
212 - FG!25: Fix link in Mutex doc
213 - FG!26: Fix links in SMPI interface doc
214 - GH#31: [MC] please provide an option to make MPI_Send asynchronous
215 - GH#305: Unscheduled tasks are still excuted
216 - GH#313: smpirun: manual outdated w.r.t. --help
217 - GH#321: [S4U] Get task remaining work ratio
218 - GH#323: Crash when an actor turn off his physical host
219 - GH#335: Missing links on dragonfly example svg
220 - https://lists.gforge.inria.fr/pipermail/simgrid-user/2019-November/004653.html:
221 MPI_Cart_sub was not working properly. Kudos to Jonathan Borne for the report.
223 ----------------------------------------------------------------------------
225 SimGrid (3.24) October 9. 2019
227 The Clean Disk Release.
230 - Introduce a s4u::Disk interface to manage the newly introduced <disk>
231 tag. s4u::Disk is called to supplant s4u::Storage in a near future. It
232 thus becomes the default resource to execute I/O operations. Examples
233 and the file system plugin have been modified to use disks instead of
234 storage elements. Storage can still be used but is doomed to disappear.
235 Users are thus adviced to update their simulators accordingly.
236 - Barrier::wait returns SG_BARRIER_SERIAL_THREAD for (only) one actor
237 for consistency with pthread_barrier_wait()
238 - Host::get_englobing_zone() returns the englobing netzone
239 - Actor::on_destruction is now called in the destructor
240 Actor::on_termination new signal called when the actor terminates
242 - Global signals are now part of the Engine:
243 - on_platform_creation: after config settings, before the XML parsing
244 - on_platform_created: right after the XML parsing
245 - on_time_advance: each time the clock advances
246 - on_simulation_end: after simulation, before cleanups
247 - on_deadlock: as the name implies.
249 - sg_{actor,host,link}_{data,data_set}() now all exist.
250 Use them to attach user data to the object and retrieve it.
253 - Introduce an experimental Wifi model. It sounds reasonable
254 according to the state of the art, but it still has to be properly
255 validated, at least against ns-3 if not against reality.
256 - Improved the usability of ns-3. Several bugs were ironed out.
257 - host_energy: Wattage was expressed as 'idle:oneCore:allCores'.
258 It is now expressed as 'idle:epsilon:allCores' to properly model the
259 consumption of non-whole tasks on mono-core hosts. More info in the doc.
262 - convert a new set of functions to the S4U C interface and move the old MSG
263 versions to legacy (MSG_process_self*, MSG_process_{un}ref, ...)
266 - Fortran bindings for DVFS have been removed.
267 - Add support for MPI_Irsend, MPI_Rsend, MPI_Rsend_init, MPI_Bsend,
268 MPI_Ibsend, MPI_Bsend_init, MPI_Buffer_attach, MPI_Buffer_detach
269 - SMPI can now be selected by cmake's find_module(MPI) with
270 MPI_C_COMPILER, MPI_CXX_COMPILER, MPI_Fortran_COMPILER variables.
271 - Add support for MPI Errhandlers in Comm, File or Win. Default errhandler is now
272 MPI_ERRORS_ARE_FATAL, so codes which were sending warnings may start failing.
273 - trace-call-location can be used with TI traces, and replayed, and is compatible
274 with smpi/comp-adjustment-file.
275 - sleep events are now correctly traced/replayed.
276 - Default for trace-call-location is now to use file names and not full paths.
277 To revert to previous behavior (in case of collision of filenames), option
278 "smpi/trace-call-use-absolute-path" can be set to yes.
281 - Use the included xxHash as an hash implem when C++14 is usable.
282 - Option model-checker/hash was removed. This is always activated now.
283 - New option smpi/buffering controls the MPI buffering in MC mode.
284 - MPI calls now MC_assert() that no MPI_ERR_* code is returned.
285 This is useful to check for MPI compliance.
288 - New section on plugins: how to define a new one, and existing ones.
291 - xbt_mutex_t and xbt_cond_t are now marked as deprecated, a new C interface
292 on S4U is already available to replace them by sg_mutex_t and sg_cond_t.
295 - Introduce the <disk> tag as a replacement of the <storage>, <storage_type>,
296 and <mount> tags. The rationale is finish to decouple what should be handle
297 by SimGrid kernel (i.e., resources and activities) from plugins built in
298 user space (e.g., the file system plugin). This new tag currently accepts
299 only three attributes (id, read_bw, and write_bw). All the other information
300 that was declared with the storage related tags now has to be expressed as
301 properties. An example of platform using this new tag is available at
302 examples/platforms/hosts_with_disks.xml
305 - 'expect signal' can now accept more than one potential signal.
307 Fixed bugs (FG#.. -> framagit bugs; FG!.. -> framagit merge requests):
308 - FG#28: add sg_actor_self (and other wrappers on this_actor methods)
309 - FG#29 and FG#33: provide a new C API to mutexes and condition variables
310 - FG#30: convert MSG_process_{un}ref to sg_actor_{un}ref
311 - FG#31: per-actor data
312 - FG#34: SG_BARRIER_SERIAL_THREAD?
313 - FG#35: model-checker does not like buster-produced binaries
314 - FG!13: MC: complete workaround in the error msg seen on modern systems
315 - FG!15: execute_flops now logs compute
316 - FG!16: Fix the ns-3 bindings when several flows are simultaneously finishing
317 - FG!17: ns-3: unblock the right number of communications + others issues
318 - FG!18: Improving the performance of the ns-3 bindings
319 - GH#189: Energy consumption of parallel tasks
320 - GH#219: Error in the throughput of TCP transfer
321 - GH!330: Minor polishing of English: Configuring_Simgrid
322 - GH!331: Fix a doc error about actors (Tutorial_algorithms)
323 - GH!332: Add '-O0' flag for: cmake -DCMAKE_BUILD_TYPE=Debug
324 - GH!334: Rework energy plugin, again
326 ----------------------------------------------------------------------------
328 SimGrid (3.23.2) July 8. 2019
331 - Nicer introduction page.
332 - Migrate the "Deploy your application" page to the new doc.
333 - Move Java as a subtree of MSG.
336 - Rename simgrid::TimeoutError to simgrid::TimeoutException.
339 - Drop xbt_dynar_sort_strings().
342 - Really fix FG#26: Turning off a link should raise NetworkFailureException
343 - FG#27: Wrong exception thrown to wait_any when link is turned off
344 - GH#328: Java: Canceling multiple tasks in a single vm/host
346 ----------------------------------------------------------------------------
348 SimGrid (3.23) June 25. 2019
350 The Exotic Solstice Release.
353 - SunOS and Haiku OS support. Because exotic platforms are fun.
354 - Stop setting random seed with srand48() at initialization.
355 - Use addr2line as a fallback for stacktraces when backtrace is not available.
356 - Build option -Denable_documentation is now OFF by default.
357 - Network model 'NS3' was renamed into 'ns-3'.
360 - Simgrid can now hopefully be installed with pip.
363 - wait_any can now be used for asynchronous executions too.
366 - New log appenders: stdout and stderr. Use stdout for xbt_help.
367 - Drop xbt_dict_dump.
370 - 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
371 - MPI/IO is now supported over the Storage API (no files are written or read, storage is simulated). Supported calls are all synchronous ones.
372 - MPI interface is now const correct for input parameters
373 - MPI_Ireduce, MPI_Iallreduce, MPI_Iscan, MPI_Iexscan, MPI_Ireduce_scatter, MPI_Ireduce_scatter_block support
374 - Fortran bindings for async collectives.
375 - MPI_Comm_get_name, MPI_Comm_set_name, MPI_Count support.
378 - Remove option 'model-check/record': Paths are recorded in any cases now.
379 - Remove option 'model-check/sparse-checkpoint': Checkpoints are now
380 always sparse. That's an immense gain in memory, and can even be
381 faster because of cache effects. So there is no need to clutter the
382 code to allow the user to go for the unefficient mode.
385 - Remove the lagrange-based models (Reno/Reno2/Vegas). The regular
386 models proved to be more accurate than these old experiments.
388 Fixed bugs (FG=FramaGit; GH=GitHub -- Please prefer framagit for new bugs)
389 - FG#1: Broken link in error messages
390 - FG#2: missing installation documentation
391 - FG#3: missing documentation in smpirun
392 - FG#6: Python bindings not available on PyPI
393 - FG#7: simple cmake call requires doxygen
394 - FG#8: make python bindings an optional dependency
395 - FG#10: Can not use MSG_process_set_data from SMPI any more
396 - FG#11: Auto-restart actors forget their on_exit behavior
397 - FG#12: -Denable_lto=OFF doesn't disable LTO
398 - FG#13: Installs unstripped file 'bin/graphicator'
399 - FG#14: Installs the empty directory 'doc/simgrid/html'
400 - FG#15: Setting -Denable_python=OFF doesn't disable the search for pybind11
401 - FG#17: Dead link in doc (pls_ns3)
402 - FG#20: 'tesh --help' should return 0
403 - FG#21: Documentation link on http://simgrid.org/ broken
404 - FG#22: Debian installation instruction are broken
405 - FG#26: Turning off a link should raise NetworkFailureException exceptions
406 - GH#133: Java: a process can run on a VM even if its host is off
407 - GH#320: Stacktrace: Avoid the backtrace variant of Boost.Stacktrace?
408 - GH#326: Valgrind-detected error for join() when energy plugin is activated
410 ----------------------------------------------------------------------------
412 SimGrid (3.22) April 1. 2019
414 The Easter Christmas Release (this one is somewhat late).
417 - We are excited to introduce the SimGrid/S4U interface to your neighborhood
418 - Not complete yet: asynchronous activities (amongst others) are still missing
419 - Still ongoing: the interface may change in the future. We need more
420 testers! Please report any glitches.
421 - No new project using Java should start now. Please switch to Python.
424 - Some of the internal cleanups may lead to speed improvements:
425 - The hard limitation on the amount of simulated actors with
426 Java+Mac was removed. Now, the available memory is the only limit.
427 - Our refcounting was tidyied, leading to 10% speedups in some cases.
428 - We are still working on making our code robust to the actor kills
429 and hosts' churn. Things are improving, but it's not perfect yet.
430 - Replaced our own code to display a backtrace (that was forking addr2line)
431 with the Boost.Stacktrace library.
432 You won't see your backtraces without this optional dependency.
433 - Bump cmake dependency to 3.5 (provided by Ubuntu 16.04).
434 - Stop setting random seed with srand() at initialization.
437 - In <host> and <peer>, 'availability_file' is now 'speed_file'.
438 XML file version remains 4.2 since old files are still compatible.
441 - Process termination which was broken at version 3.21 has been repaired.
442 - Expose host load plugin: loadInit, getCurrentLoad, getComputedFlops, getAvgLoad
443 - Hide the examples into examples/deprecated. New users should use Python.
446 - Drop MSG_process_create_from_stdfunc() from the API.
447 This C++ function was a pimple in the C API, made necessary at some
448 point by the Java bindings. This is fixed now.
449 - Hide the examples into examples/deprecated. New users should use S4U.
450 - MSG_process_create and MSG_process_attach now crash if the host used
451 to run this process is off.
452 - Fix the protype of MSG_process_on_exit()
453 Now use (int,void*) callbacks instead of (void*,void*) ones.
454 The implementation was ways too messy to actually work, I guess.
457 - Change the way SMPI_SAMPLE_* macros work to avoid invalidating cache
458 too often and provide more accurate timings.
459 - Add -gdb, -lldb, and -vgdb shortcuts to help debug MPI codes with smpirun
460 - MPI_Alltoallw support
461 - Partial MPI nonblocking collectives implementation: MPI_Ibcast, MPI_Ibarrier,
462 MPI_Iallgather, MPI_Iallgatherv, MPI_Ialltoall, MPI_Ialltoallv, MPI_Igather,
463 MPI_Igatherv, MPI_Iscatter, MPI_Iscatterv, MPI_Ialltoallw.
464 - MPI_Request_get_status, MPI_Status_set_cancelled, MPI_Status_set_elements
466 - Basic implementation of generalized requests (SMPI doesn't
467 allow MPI_THREAD_MULTIPLE) : MPI_Grequest_complete, MPI_Grequest_start
470 - Drop sg_cmdline. Please use xbt_cmdline instead.
471 - Drop the C xbt_os_mutex_t; Use the C++11 std::mutex.
472 - Drop the C xbt_os_sem_t; Use the C++ xbt::OsSemaphore.
473 OsSemaphore is implemented in a portable way with C++11 threads.
474 This should allow much more threads to be created at the same time,
475 allowing Mac and Java users to simulate many more actors.
476 - Implement the 'thread' factory with std::thread instead of xbt ones.
477 It is not possible to set the stack size with threads anymore, but
478 -fsplit-stack is the way to go nowadays when using threads.
479 - Drop the xbt_os_thread_t module (now unused)
480 - Drop xbt_ex_display(), use simgrid::xbt::log_exception() instead.
481 - Drop xbt_str_join_array().
482 - Drop cunit, use Catch2 instead.
485 - Many cleanups in the kernel::activity namespace. This was long
486 overdue, and shall open the path to many future endeavors.
489 - #132: Java: a process can not shut down its own host
490 - #220: S4U: detached send causes exception if sender terminates soon after sending
491 - #261: Document the parameters of parallel execution's constructor
492 - #300: [s4u] BarrierPtr is missing
493 - #314: SMPI args internal cleanup
494 - #316: Fix a bug related to the CPU utilization of multi-core VM
495 - #318: Invalid trace file when using option --cfg=tracing/smpi/display-sizes:yes
496 - #324: S4U: Attempting to create an actor on turned off host segfaults instead of throwing
497 - #325: Turning off a host has different behavior on sleeping actors and computing actors
499 ----------------------------------------------------------------------------
501 SimGrid (3.21) October 3. 2018
503 The Restarting Documentation (TRD) Release.
506 - Convert the user manual to Sphinx for improved usability.
507 Unstable version now hosted on https://simgrid.frama.io/simgrid
508 Many glitches remain; stay tuned.
509 - Restrict the Doxygen reference API to the installed header files.
510 (documenting all internals this way is overkill + doxygen scales badly)
511 - New tutorial on S4U (highly inspired from the old MSG one, but with
512 a git repository to fork as a starting point, and a docker image)
513 - Started but not finished an SMPI tutorial inspired from the JLPC'14 one.
514 - The Developper manual is still to be converted (not compiled until then)
515 - Some parts are still missing in this conversion (such as the
516 platform and deployment sections) while others were blindly converted
517 and would need more love (such as the configuration flags).
518 Things will certainly further improve in the future releases.
521 - Fully reimplement auto_restart mechanism that was utterly broken
522 (fix #22, #131 and #281 that were all very related)
523 - Implement semaphores (fix #303 and #291)
524 - When creating an actor from a function and its parameters,
525 move-only parameters are not allowed anymore, as it would prevent
526 the actor to be restartable if its parameters are consumed on run.
527 - s4u::Io: IOs go asynchronous as activities. New methods in s4u::Storage:
528 - io_init(sg_size_t, s4u::Io::OpType) to create a READ or WRITE asynchronous
529 IO operations that can be started, waited for, or canceled as a regular
531 - read_async(sg_size_t) and write_async(sg_size_t) which are wrappers on
535 - Rename 'power' and 'power_used' variables into 'speed' and 'speed_used'
536 - New host variable: 'core_count'
539 - Remove xbt_os_thread_specific features
540 - Remove portability wrapper to condition variables
541 - Remove xbt_os_thread_yield()
544 - MPICH collective selector now mimics MPICH 3.3b
545 - OpenMPI collective selector now mimics OpenMPI 3.1.2 (default "tuned" setting)
546 - MPI_Init(NULL,NULL) is now allowed
547 - smpi/wtime option now injects time in gettimeofday or clock_gettime calls
548 - Command-line arguments should now be handled properly in Fortran simulations
549 - MPI Attributes and related callbacks should work in Fortran
550 - Apps using C + Fortran should now work
551 - MPI_* calls now check for non MPI_SUCCESS return values and emit warnings
552 - Support MPI_Error_String
555 - Due to an internal bug, Msg.run() must now be your last line.
556 We hope to fix it in a future release, and we are sorry for the inconvenience.
559 - #22: Process autorestart seem to only work with CAS01 cpus
560 - #56: Feature request: dynamic SMPI replay
561 - #93: simgrid should not eat --help
562 - #111: How to change the loopback link characteristics?
563 - #116: Platform cluster radical
564 - #117: Platform cluster/host order
565 - #129: Replay_multiple on steroid
566 - #131: Java : autostart does not work
567 - #143: Setting a breakpoint at a given time
568 - #235: Network energy models should be integrated
569 - #264: Add ptask L07 resource tracing
570 - #271: Dynamic and manual replay of SMPI traces
571 - #279: Breakpoints option uses time deltas instead of absolute time
572 - #281: Daemonized actor no longer daemonized after an auto-restart
573 - #282: TIT convertor erase traces when using absolute path in the trace list file
574 - #285: segfault when a s4u actor kills itself with msg process tracing activated
575 - #286: Pajé traces are not exposing the number of cores
576 - #287: Command-line parsing should stop when encountering '--'
577 - #288: MPI_Init(NULL, NULL)
578 - #289: Improve documentation of Actor::on_destruction and this_actor::on_exit()
579 - #290: Method to check if a mailbox has a message ready to be consumed
580 - #291: [s4u] semaphores do not seem available yet
581 - #294: Alltoall collective implementation of mpich
582 - #295: Starting a Host as OFF is not supported
583 - #296: DTD too permissive
584 - #299: Add a s4u barrier example
586 ----------------------------------------------------------------------------
588 SimGrid (3.20) Released June 24. 2018
590 The proxy snake_case() release.
593 - The whole API is now using snake_case() instead of mixing it with camelCase.
594 Compatibility wrappers in place for one year.
595 - We took the opportunity to increase the consistency of the API.
596 Please report any remaining glitches.
597 - New function simgrid::s4u::Host::get_actor_count:
598 Returns the number of actors running on a specific host.
601 - SMPI is now tested with ~45 proxy apps from various sources, with none or
602 only minor patching needed: check https://github.com/simgrid/SMPI-proxy-apps
603 - Replay: The replay file has been re-written in C++.
604 - Replay: Tags used for messages sent via MPI_Send / MPI_Recv are now
605 supported. They are stored in the trace and used when replayed.
606 - Basic support of MPI_Cancel. Robustness not guaranteed.
607 - Support of MPI_Win_allocate_shared, MPI_Win_shared_query, MPI_Comm_split_type
608 (only for MPI_COMM_TYPE_SHARED).
609 - New option: smpi/privatize-libs, to add external shared libs to be privatized
610 by SMPI. They will be copied locally and loaded separately by each process.
611 Example --cfg=smpi/privatize-libs:"libgfortran.so.3;libscalapack.so".
612 - Tracing: add tracing for MPI_Start, Startall, Testall, Testany
613 - Interception of getopt, getopt_long and getopt_long_only calls to avoid issues
614 with internal index optind with multiple processes. Only works if MPI_Init has
616 - Fortran: SMPI builds a mpi.mod file which should allow use of "use mpi"
617 syntax without preprocessing tricks.
620 - Change --cfg=tracing/msg/vm to --cfg=tracing/vm as virtual machine
621 behavior tracing is no longer limited to MSG
622 - TIT (Time Independent Traces): We finally support tags. Unfortunately,
623 this means that traces now need to be updated or re-obtained; both Irecv
624 and Isend lines in your traces have now in total 5 mandatory fields:
625 <rankid> <command> <to/from rankid> <tag> <size>
626 To update your traces, it suffices to add a 0 for the tag here.
627 - TIT now also supports waiting for a distinct request via MPI_Wait.
628 Wait/Test now wait for a specific request, not just the last one that was
629 issued. This unfortunately means another update, because we need to
630 identify which request you want to wait for. We do this via the
631 triplet (sender, receiver, tag), which needs to be added:
632 <rankid> <command> <sender> <receiver> <tag>
633 - Actions are now in lower case (e.g., "allReduce" becomes "allreduce").
634 New script simgrid_convert_TI_traces.py: upgrade your TI traces.
637 - The deprecation of MSG is ongoing (but this should not impact you).
638 Many MSG functions are now simple wrappers on the C API of S4U. If
639 you wish to convert your code to S4U, find the S4U counterparts of
640 your MSG calls in src/msg/msg_legacy.cpp.
641 - MSG can still be used, but won't evolve anymore.
644 - Allow to run the Link energy plugin from the command line with
645 --cfg=plugin:link_energy
646 - Rename Energy plugin into host_energy
647 - Rename Load plugin into host_load
650 - Add parameter --cfg=simix/breakpoint to raise a SIGTRAP at given time.
651 - kill simix::onDeadlock() that was somewhat dupplicating s4u::on_deadlock()
652 - Improve performance when handling timeouts of simix synchros.
655 - Config: the C API is now deprecated (will be removed in 3.23), and
656 the C++ API has been slightly improved.
659 - Fix several build issues on OSX.
660 - Move simgrid_config.h to simgrid/config.h (old header still working)
663 - #143: Setting a breakpoint at a given time
664 - #150: Inconsistent event names in SMPI replay
665 - #258: daemonized actors hang after all non-daemonized actors have completed
666 - #267: Linker error on unit_tmgr
667 - #269: SMPI: tracing of MPI_Wait/all/any broken
668 - SMPI: Fix various crashes with combined use of MPI_PROC_NULL and MPI_IGNORE_STATUS
670 ----------------------------------------------------------------------------
672 SimGrid (3.19.1) Released March 22 2018
674 The Fixed ABI Release.
676 As you may know, we are currently refactoring SimGrid in deep.
677 Upcoming SimGrid4 will be really different from SimGrid3: modular,
678 standard and extensible vs. layered, homegrown and rigid. C++ vs. C.
680 Our goal is to smooth this transition, with backward compatibility
681 and automatic update paths, while still progressing toward SimGrid4.
683 SimGrid remains open during works: The last pure SimGrid3 release was
684 v3.12 while all subsequent versions are usable alpha versions of
685 SimGrid4: Existing interfaces remain unchanged, but the new S4U
686 interface is budding and the internals are deeply reorganized.
688 Since 2015, we work hard to reduce the changes to public APIs. When
689 we need to rename a public library symbol in S4U, we let your
690 compiler issue an explicative warning when you use the deprecated
691 function. These messages remain for four releases, i.e. for one full
692 year, before turning into an error. Starting with v3.15, your can
693 also adapt to API changes with the SIMGRID_VERSION macro, that is
694 defined to 31500 for v3.15, to 31901 for v3.19.1 and so on.
696 Starting with this v3.19.1, our commitment to reduce the changes to
697 the public interfaces is extended from the API to the ABI: a program
698 using only MSG or SimDag and compiled against a given version of
699 simgrid can probably be used with a later version of SimGrid without
700 recompilation. We will do our best... but don't expect too much of
701 it, that's a really difficult goal during such profund refactoring.
703 The difference between v3.19 and v3.19.1 is that the former was
704 accidentally breaking the ABI of MSG, while the later is restoring
707 S4U and kernel APIs will still evolve until SimGrid4, with one-year
708 deprecation warnings as currently. In fact, cleaning up these
709 interfaces and converting them to snake_case() is one release goal of
710 v3.20. But don't worry, we are working to smooth this upgrade path.
712 In summary, new projects should start with S4U to benefit of the
713 future, but old MSG projects should still be usable with no change.
715 ----------------------------------------------------------------------------
717 SimGrid (3.19) Released March 20 2018
719 The Moscovitly-cold Spring release.
721 SMPI user-visible improvements:
722 - Support of MPI_Type_create_subarray
723 - Unimplemented MPI calls now abort (instead of issuing a warning)
724 Some harmless calls around errhandlers still only issue a warning.
725 - MPI_Sendrecv was behaving badly when MPI_PROC_NULL was sender or receiver.
726 - Starting MPI ranks (or even MSG/S4U actors) once the simulation started
727 is now possible (mmap privatization was refactored to this end).
728 Adding new SMPI instances should also be technically doable now.
730 SMPI internal cleanups:
731 - Removed index notion from SMPI -- no more "getPid() - 1"!
732 In tracing files, actors are called rank-<PROCESS-ID> but these are
733 NOT the real ranks (tracing several communicators is not supported yet).
734 - Deprecate smpi_process_index() (will be removed in 3.22)
735 - Better testing on classical proxy apps, through an external project:
736 https://github.com/simgrid/SMPI-proxy-apps/
739 - Use a graphical TOC to make it easier to find the documentation you need
740 - Revamp the MSG tutorial
743 - Fix MSG_task_get_remaining_work_ratio(): return 1.0 for unstarted tasks.
744 - Remove parameter of MSG_process_killall().
745 Resetting the PID was bogus anyway (several actors could have the same PID).
748 - Execution->setHost() can be called after start(), to migrate it.
749 - Comm::test_any() is now implemented.
750 - s4u::Actor now has onCreation() and onDestruction() signals.
751 - Install some kernel header files for the users' plugins and more.
752 Warning, their API is really not stable yet.
753 include/simgrid/kernel/resource/{Action,Resource,Model}.hpp
754 include/simgrid/kernel/routing/*Zone.hpp
757 - SD_task_dependency_add(): remove unused parameters 'name' and 'data'.
759 Build System and other cleanups:
760 - Remove unused run-time parameter "tracing/onelink-only".
761 - SimGrid now works with intel compilers (MC still buggy)
762 - Remove XBT_LOG_CONNECT, it should be useless nowadays.
763 - tesh kills subprocesses on timeout (but not on windows)
766 - Rename FULLDUPLEX into SPLITDUPLEX (old name still accepted)
769 - #194: Feature request: simgrid::s4u::Comm::test_any()
770 - #245: migrating an actor does not migrate its execution
771 - #253: Feature Request: expose clusters as objects
772 - #254: Something seems wrong with s4u::Actor::kill(aid_t)
773 - #255: Tesh broken on Windows
774 - #256: Modernize FindSimGrid.cmake
775 - #257: Fix (ab)use of CMake install
777 ----------------------------------------------------------------------------
779 SimGrid (3.18) Released December 24 2017
781 The "Ho Ho Ho! SimGrid 4 beta is coming to town" release.
783 MSG IS NOW DEPRECATED. Please use S4U for new projects.
784 - Support for MSG should not be removed from SimGrid before 2020,
785 but future evolutions will be limited to the integration of
786 user-provided patches.
789 - s4u::onDeadlock() signal, run before stopping the simulation.
790 - s4u::Exec: asynchronous executions (abstraction of background
792 - s4u::Host->getLoad() returns the achieved speed in flops/s
795 - Link::name() is deprecated and will be removed in v3.21, use
796 Link::getCname() instead.
797 - Mailbox::getName() changed to return a std::string, use
798 Mailbox::getCname() instead to get a char*.
799 - Storage::getName() changed to return a std::string, use
800 Storage::getCname() instead to get a char*.
801 - s4u::allStorages() becomes s4u::getStorageList(whereTo)
802 to have both allocation and deallocation of the map in user space.
805 - Forbid the use of MSG_task_get_flops_amount() on parallel tasks:
806 The amount of flops remaining to do is a vector, not a scalar.
807 - Introduce MSG_task_get_remaining_work_ratio(), which does what its
808 name implies on both sequential and parallel tasks.
809 - Both changes fix GitHub's #223 using PR #237 as a basis.
810 Thanks Michael Mercier.
811 - Most examples were converted to S4U and hidden elsewhere at tests.
812 Rationale: we still want MSG to work; we want newcomers to use S4U.
815 - LMM stuff moved to its own namespace: simgrid::kernel::lmm.
816 - Renamed LMM classes (e.g. s_lmm_system_t -> System).
819 - Switch to the faster dlopen privatization mechanism by default
820 - Documentation improvments
823 - Live migration is getting moved to a plugin. Dirty page tracking is
824 the first part of this plugin. This imply that VM migration is now
825 only possible if one this function is called:
826 - C/MSG: MSG_vm_live_migration_plugin_init()
827 - C/C++: sg_vm_live_migration_plugin_init()
828 - Java: Msg.liveMigrationInit()
829 For C and C++, "simgrid/plugins/live_migration.h" also has to be
833 - Define class simgrid::xbt::Path to manage file names.
834 - Removed unused functions:
835 - xbt/file.h: xbt_basename(), xbt_dirname(), xbt_getline()
836 - xbt/graph.h: xbt_graph_edge_get_length(), xbt_graph_edge_set_length,
837 xbt_graph_export_graphviz()
838 - xbt/str.h: xbt_str_join()
839 - Remove unused datatypes:
840 - xbt/heap.h: use std::priority_queue or boost::heap instead
841 - xbt/swag.h: use boost::intrusive::list instead
844 - New link_energy plugin for the consumption of the links.
845 - All of the operations on files and storage contents have been
846 packaged into a plugin (src/plugins/file_system). The current
847 public interface can be found in
848 include/simgrid/plugins/file_system.h
849 To use these functions you now have to initialize the plugin by
850 calling MSG_storage_file_system_init() just after calling
851 MSG_init() or sg_storage_file_system_init() just after creating
855 - Remove the undocumented/untested tag <include>
858 - Remove viva specific tracing as the tool is no longer maintained
861 - #248: Kill of finished processes leads to segfault
862 - #240: xbt_cond_wait_timeout should gracefully return for C apps
863 - #239: please implement signal s4u::onDeadlock()
864 - #230: segfaults when exit() without run()
865 - #225: s4u::Actor::kill() doesn not really kill victims in a join()
866 - #223: MSG_task_get_flops_amount() not working with parallel tasks
867 - #222: Actor::kill() doesn't really kill and segfaults
868 - #221: odd LMM warning when killing an actor
869 - #120: Memory leak when the processes are forcefully killed
871 ----------------------------------------------------------------------------
873 SimGrid (3.17) Released October 8 2017
875 The Drained Leaks release: (almost) no known leaks despite the tests.
877 Even very long simulations will preserve your memory: our testsuite
878 stresses SimGrid for over 45mn on fast machines for a coverage of
879 over 80%, and there is only one single known leak, of about 4kb.
883 - Comm.detach(): start and forget about asynchronous emission. A cleanup
884 handler may be given to free resources if the comm cannot be completed.
885 - this_actor::send(mailbox) is now mailbox->put()
886 - New: simgrid::s4u::Comm::wait_all()
887 - New: Host.execute() for remote executions.
890 - Unused option network/sender-gap is removed.
893 - Deprecate MSG_task_isend_with_matching(): This unused feature
894 really complicates our internals. Will be removed in v3.20.
897 - Improved context termination. It is now possible to free resources, even
898 when a process is forcibly killed.
899 - ContextBoost: add support for Boost versions above 1.61.
902 - Bring back run-time option --cfg=exception/cutpath to remove exception
904 - Removed unused functions:
905 - xbt/str.h: xbt_str_split_str(), xbt_str_subst(), xbt_str_ltrim(),
906 xbt_str_rtrim(), xbt_str_trim().
907 - xbt/xbt_os_thread.h: xbt_os_thread_cancel(), xbt_os_thread_detach().
910 - Removed header files obsolete since SimGrid 3.12:
911 msg/datatypes.h, msg/msg.h, simdag/datatypes.h, simdag/simdag.h.
913 - #3: SD_exit should be made optional
914 - #120: Memory leak when the processes are forcefully killed
915 - #159: Threading test regression in Actor refcounting
916 - #170: simgrid::s4u::Comm::wait_any() returns too many comms
917 - #185: simgrid::s4u::Engine::instance()->shutdown() segfaults
918 - #186: Actor::killAll() segfaults if some process is blocked on wait()
919 - #191: VM migration and pstate
920 - #192: Updating the energy consumptions of all hosts crashes with VMs
921 - #195: All actors have PID=0 in the logs
922 - #204: Sometimes segfault with thread contexts and mmap privatization
923 - #222: Actor::kill() doesn't really kill and segfaults
924 - #225: Actor::kill() doesn't really kill when victims are doing a join()
926 ----------------------------------------------------------------------------
928 SimGrid (3.16) Released June 22. 2017.
930 The Blooming Spring Release: developments are budding.
933 - FreeBSD: Disable SMPI mmap privatization, switch automatically to dlopen.
934 - Mac, BSD: dlopen+thread broken, switch automatically to raw contexts.
935 - Java JAR file should be finally fully working on Mac OSX too.
937 XML platforms: Switch to platform v4.1 format.
938 * This is (mainly) a backward compatible change: v4 are valid v4.1 files
939 - <zone> can be used as a synonym for the now deprecated <as>
940 - <zoneRoute> can be used as a synonym for the now deprecated <asroute>
941 - <bypassZoneRoute> can be used as a synonym for the now deprecated <bypassAsRoute>
942 - <actor> can be used as a synonym for the now deprecated <process>
943 - state_file and avail_file periodicity is now easier to express
944 (check the documentation) the old behavior should still work.
945 * Storage: not backward compatible, but it seems that nobody ever used it
946 - Remove attribute 'content_type' of <storage_type>: was never used
947 - Make attribute 'model' of <storage_type> optional: for future usage
948 - Remove Bconnection model property: was never (in)validated. Replaced by
949 the maximum of the read and write bandwidth as a resource constraint.
952 - New and Backwards Compatibility break:
953 SD_simulate_with_update (double how_long, xbt_dynar_t changed_tasks_dynar)
954 When one wants to get the list of tasks whose states have changed during a
955 simulation round, s/he has to allocate and free a dynar and use it as
956 argument to this function. The former SD_simulate (double how_long)
960 - Allow multicore VMs, with the correct sharing (unless you overcommit)
961 BUG: vCPU overcommitting still leads to buggy sharing, though. WIP.
964 - New function to update the consumption of all hosts at once.
965 - Fix the model for multi-core hosts, linear in the amount of busy
966 cores with an abnormality for pIdle (see paper).
967 BUG: Still not satisfactory for ptask on mono-cores.
970 - The netzone are now available from the MSG API.
971 The old names still work, but are now deprecated.
974 - New algorithm to privatize globals: dlopen, with dynamic loading tricks
975 - New option: smpi/keep-temps to not cleanup temp files
976 - New option: smpi/shared-malloc-blocksize . Relevant only when global shared
977 mallocs mode is used, allows to change the size of the fake file used
978 (default 1MB), to potentially limit the number of mappings for large runs.
979 - Support for sparse privatized malloc with SMPI_PARTIAL_SHARED_MALLOC()
980 - Fortran ifort and flang compilers support
981 - New RMA calls supported (experimental):
982 - MPI_Win_allocate, MPI_Win_create_dynamic, MPI_Win_attach
983 - MPI_Win_detach, MPI_Win_set_info, MPI_Win_get_info
984 - MPI_Win_lock_all, MPI_Win_unlock_all, MPI_Win_flush
985 - MPI_Win_flush_local, MPI_Win_flush_all, MPI_Win_flush_local_all
986 - MPI_Op_commutative, MPI_Fetch_and_Op, MPI_Compare_and_swap
987 - MPI_Rput, MPI_Rget, MPI_Raccumulate, MPI_Rget_accumulate
990 - New: this_actor::isMaestro() returns whether we are in kernel mode.
991 - Behind the scene, ActivityImpl are now automatically refcounted.
992 Removing this nasty bottleneck will greatly simplify our internals.
995 - Replay: New function xbt_replay_action_get():
996 Retrieve the function previously associated to an event type.
997 - DROPPED FUNCTION: xbt_str_varsubst()
998 - DROPPED MODULE: strbuff. We don't need it anymore.
999 - DROPPED MODULE: matrix. We don't need it anymore.
1000 - DROPPED MODULE: lib. We don't need it anymore.
1002 -- Thu Jun 22 22:48:12 CEST 2017 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1004 SimGrid (3.15) Released March 22. 2017
1006 The Spring Release: continuous integration servers become green
1007 We fixed even the transient bugs on all target architectures:
1008 Linux (CentOS, Debian, Ubuntu, Fedora), Mac OSX (Mavericks, El Capitan)
1009 Windows, FreeBSD, NetBSD.
1011 - Rename NetCards to NetPoints.
1012 This was intended to help NS3 users, but that's not a netcard.
1013 That's a point in the routing algorithm, let's avoid wrong simplifications.
1016 - New: MSG_process_yield(). Stop and yield to other processes.
1017 - New: MSG_process_daemon(). Daemon processes are automatically killed
1018 when the last non-daemon process terminates
1019 - New: MSG_process_ref/unref(). Fiddle with the process refcounting.
1020 - Renamed MSG_energy_plugin_init() -> MSG_host_energy_plugin_init()
1021 to make room for the upcoming network energy plugin.
1022 - Drop MSG_host_get_current_power_peak: duplicates MSG_host_get_speed
1025 - Ensure that an actor can kill itself with Process::exit()
1026 - Kill the obscure NativeException. Nobody want to survive the issues
1027 it denotes, so use JniException that is a RuntimeException (not to
1028 be caught explicitly).
1029 - Partial bug fix in initialization. SimGrid flags on command line were
1030 consumed at C level but stayed in the original Java String[] args.
1031 This could mess users' args[i] if SG flags were not put at the end of
1033 The SimGrid flags are now removed from the Java arguments. However,
1034 the number of arguments REMAINS UNCHANGED. It is then UNSAFE to test
1035 if args.length is greater than the number of YOUR OWN ARGUMENTS.
1036 It might be if you have --log or --cfg flags in the command line.
1037 - Fix numerous memleaks all around the place. In particular, around VMs.
1041 - s4u::onPlatformCreated: right before the simulation starts
1042 - s4u::onSimulationEnd: right after the main simulation loop
1043 - s4u::onTimeAdvance: right after a clock change (time is discrete)
1044 - s4u::Host::onSpeedChange: when the pstate is changed, or when an
1045 event from the availability_file changes the avail speed.
1046 - Links are now usable from s4u
1047 - New: Engine::hostList() and Engine::hostCount(). Still clumsy.
1048 - New: Actor::suspend(), Actor::resume(), and Actor::migrate(new_host)
1049 - New examples: The conversion of MSG examples to S4U has begun
1050 - Actors: create, kill, migration, and suspend
1051 - Applications: master-worker and token-ring
1052 - Action replay: communications and storage
1053 - Drop Host::getPstateSpeedCurrent() which duplicates Host::speed()
1056 - Backwards Compatibility breaks
1057 - The SD_route_get_list and SD_route_get_size functions have been removed.
1058 They are replaced by the unique
1059 void sg_host_route(sg_host_t src, sg_host_t dst, xbt_dynar_t links)
1060 The route from src to dst is built in the links dynar whose size can
1061 be obtained with xbt_dynar_length.
1062 - The SD_route_bandwidth and SD_route_latency functions have been replaced by
1063 sg_host_route_bandwidth and sg_host_route_latency.
1064 Macros ensure the backwards compatibility, but you should fix your code
1067 - Major C++ rewrite ongoing (SMPI used to be C compiled in C++).
1068 This can break codes using SMPI internals (from private.h instead of the public smpi.h).
1069 - Bump our claim of support from MPI 1.1 to MPI 2.2.
1070 We don't support 100% of it, but it should be enough. Contact us if not.
1071 - MPI_Win_lock/unlock, MPI_Get_accumulate support added (as for all RMA, implementation is
1072 naive and probably inaccurate)
1073 - New algorithm for SMPI_SHARED_MALLOC: global, where all blocks are
1074 mapped onto a unique small file using some system magic.
1075 - Bugfix: smpirun was sometimes misusing hostfile when wrongly terminated
1076 - Fortran: cleanups, fixes, support of user-added operations
1077 - RMA: MPI_Accumulate are applied in correct order.
1078 - RMA: MPI_Win_{complete/post} shouldn't miss messages anymore.
1079 - Better support for MPI_IN_PLACE
1080 - Support for MPI_Win attrs and keyvals.
1081 - Support MPI_Comm_group_create, MPI_Type_size_x
1082 - MPI ops should be properly applied to all allowed types
1083 - Replace implementation of MPI_Bcast "scatter followed by rdb allgather"
1084 algorithm by a non failing one from mpich.
1087 - Kill the fifo data container: we don't use it anymore.
1090 - A <cluster> can now be created with different speed values to represent pstates.
1091 see examples/platforms/energy_cluster.xml for an example.
1093 SimGrid (3.14.159) Released December 28. 2016
1095 The previous release was only a crude approximation of a Pi release;
1096 this one should be a bit better.
1098 - Revert a last minute change that broke on Mac OSX.
1099 - Fix the changelog and NEWS files.
1100 - Improve the documentation, in particular of the routing module.
1101 - Integrate some patches flying around in Debian.
1103 SimGrid (3.14) Released December 24. 2016
1106 * The whole documentation was reworked and reorganized. There is
1107 still much room for improvement here, but we're on it.
1110 * We now need python3 for our testing infrastructure.
1111 * Model checking needs libevent
1114 * Now works on FreeBSD
1117 * Privatization now works on FreeBSD
1119 * Privatization is now activated by default in smpirun
1120 You can turn it off with -no-privatize if something goes wrong.
1122 * Call-location tracing for SMPI.
1123 You can add the exact location (filename / linenumber) of an MPI call to
1124 your trace files and slow down or speed up the simulation between two
1125 consecutive calls by using an adjustment file (see the documentation).
1127 * Fixed computation of timings for MPI_Send, MPI_Recv & possibly also others
1128 We've found a bug that prevented SMPI to account for MPI_Send, MPI_Recv
1129 and others (in some cases) in a correct way. That is, the smpi/os, smpi/or
1130 values were ignored in some cases. The timings of these functions can now
1131 be significantly different.
1133 * smpi/cpu-threshold:-1 should become smpi/simulate-computation:no
1134 smpi/running-power is renamed to smpi/host-speed
1136 * smpi/grow-injected-times option to enable or disable multiplication of the
1137 timings injected in MPI_Iprobe, or MPI_Test. Enabled by default, which can
1138 make simulation less precise (but also much faster).
1140 * smpirun script should be (much) faster for large deployments.
1142 * SMPI tracing: fixed issue with poor matching of send/receives.
1144 * Replay: Fix broken waitall
1146 New functions and features
1147 * MSG_parallel_task_execute_with_timeout, to timeout computations.
1149 Dropped / renamed functions and features
1150 * msg_mailbox_t and associated functions. Use s4u::Mailbox instead.
1151 - MSG_mailbox_is_empty() -> Mailbox::empty()
1152 - MSG_mailbox_front() -> Mailbox::front()
1153 - MSG_mailbox_get_by_alias() -> simgrid::s4u::Mailbox::byName(name)
1154 - MSG_mailbox_get_task_ext() -> MSG_task_receive_ext()
1155 - MSG_mailbox_get_task_ext_bounded -> MSG_task_receive_ext_bounded
1156 - MSG_host_(get/set)_params -> MSG_vm_(get/set)_params
1157 * Don't pass the free_f parameter to property related functions:
1158 - MSG_host_set_property_value()
1159 - MSG_as_router_set_property_value()
1160 - MSG_storage_set_property_value()
1161 * VM properties. Since msg_vm_t are msg_host_t, just use
1162 MSG_host_get_property_value() and friends
1163 * VM I/O related things:
1164 - Ignored parameter of vm_create: core_nb, disk_path and disk_size.
1165 - Unimplemented save/restore methods
1166 * MSG_as_router_get_property_value() was redundant with
1167 MSG_environment_as_get_property_value().
1168 - Removed MSG_as_router_*propert*() functions
1169 - Added MSG_environment_as_set_property_value() for consistency
1170 * xbt heterogeneous dictionaries (created with xbt_dict_new()).
1171 Well, they are still there for now, but deprecated with a warning.
1172 Please switch to xbt_dict_new_homogeneous() before this is removed
1174 * Task affinity. Its intended behavior (that was very badly tested
1175 and probably not really working) was deceiving what most users
1176 would have hoped here.
1177 * xbt_os_sem_get_value: unused internally, deprecated on OS X El Capitan
1178 * Option network/coordinates is now useless and should be dropped.
1181 * Added option storage/max_file_descriptors to allow more than 1024 files opened
1184 * Added option maxmin/concurrency_limit to allow more than 100 processes per host
1185 * Added Dragonfly topology support
1188 * Add Exa- and Peta- units such as EiB, EB, Eib, Eb for size, and
1189 EiBps, EBps, Eibps, Ebps for bandwidth.
1190 They may become useful to some lucky ones.
1193 * New functions: msg.Comm.waitAll() and msg.Comm.waitAny()
1194 * ex/app_tokenring: new example, very similar to the MSG Token Ring
1195 * ex/async_waitAll: new example, on asynchronous communications
1198 * Memory usage should be decreased for simulations with a large number
1199 of processes. This also helps for SMPI.
1201 SimGrid (3.13) stable; urgency=low
1203 The Half Release, a.k.a. the Zealous Easter Trim.
1205 - We removed half of the lines, that were mostly experimental cruft.
1206 v3.12 lasted 286000 lines of code, v3.13 is only 142000 lines
1207 (not counting blanks and comments -- according to openhub.net)
1208 - The internals are now compiled in C++ (and will soon be clean C++)
1209 - We removed 75 klines of XML, 12 klines of Java, 5 klines of cmake,
1210 59 klines of C, etc. We added only 29 klines of C++ in replacement.
1212 * Backwards Compatibility breaks
1213 - Removed Lua simulation bindings (switch to C or Java for that).
1214 Lua can still be used to describe platforms
1215 - Removed Java kernel plug-ins.
1216 Will be reintroduced after the ongoing major internals reorg.
1218 - the following functions were removed.
1219 They were too specific and should be reimplemented in a generic
1220 way, with filter function.
1221 - MSG_task_listen_from_host
1222 - MSG_mailbox_get_count_host_waiting_tasks
1223 - MSG_mailbox_put_with_timeout was removed.
1224 Please use MSG_task_send_with_timeout instead.
1226 - the SD_application_reinit function was removed. It has been a noop for a while.
1227 - The ACCESS_MODE of SD_workstation has been removed. This feature was not really usable and should soon be
1228 replaced by a more flexible mechanism.
1229 - The following functions thus do not exist anymore
1230 - SD_workstation_get_access_mode
1231 - SD_workstation_set_access_mode
1232 - SD_workstation_get_current_task
1233 - Basic estimation functions have been removed but can easily be replaced
1234 - SD_route_get_communication_time => SG_route_get_latency() + amount / SD_route_get_bandwidth()
1235 - SD_workstation_get_computation_time => amount / sg_host_speed()
1237 - VM.setBound(int load) is now VM.setBound(double bound) to meet the MSG semantics.
1238 Use VM.getSpeed()*load/100 for the legacy behavior.
1240 - option enable_tracing was removed. It was not doing anything for a while.
1241 - In the ModelChecker:
1242 - the model-checker now ptraces the model-checked process which means
1243 you cannot use a debugger on the latter anymore (we might make this
1244 optional in the feature);
1245 - removed soft-dirty page tracking;
1246 - remove model-checked side snapshot management,
1247 MC_snapshot() and MC_compare_snapshot();
1248 - keep the MC_cut() function as a stub (it was not really working
1249 in the previous release).
1252 * All options are consistently in kebab-case. Old names are kept as alias.
1255 * Switch to platform v4 format.
1256 - Rename from 'power' to 'speed' the attributes describing the amount of
1257 flops that a <host>, <peer>, <cluster> or <cabinet> can deliver per second.
1258 - In <trace_connect>, attribute kind="POWER" is now kind="SPEED".
1259 - In <host> and <link>, attributes availability and state are gone.
1260 It was redundant with state and availability traces, and with peak values.
1261 - In <cluster>, attributes availability_file and state_file are gone.
1262 It was too complex and unused.
1263 - Kill <gpu>. Was not doing anything.
1264 - The DOCTYPE points to the right URL:
1265 http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd
1266 (the file at this address now documents the changelog since its v1)
1267 - A warning is emitted for unit-less values (they are still accepted).
1268 - speed. Default: 'f' or 'flops'. Also defined:
1269 'Yf', 'Zf', 'Ef', 'Pf', 'Tf', 'Gf', 'Mf', 'kf'
1270 'yottaflops', 'zettaflops', 'exaflops', 'petaflops', 'teraflops', 'gigaflops', 'megaflops', 'kiloflops'
1271 - bandwidth. Default: 'Bps' bytes per second (or 'bps' for bits but 1 Bps = 8 bps)
1272 Also defined in bytes: 'TiBps', 'GiBps', 'MiBps', 'KiBps', 'TBps', 'GBps', 'MBps', 'kBps', 'Bps'
1273 And the same in bits: 'Tibps', 'Gibps', 'Mibps', 'Kibps', 'Tbps', 'Gbps', 'Mbps', 'kbps', 'bps'
1274 - latency. Default: 's' second. Also defined:
1275 'w' week, 'd' day, 'h' hour, 'm' minute, 'ms' millisecond, 'us' microsecond, 'ns' nanosecond, 'ps' picosecond
1277 * bin/simgrid_update_xml can upgrade your files automatically (won't convert unit-less values)
1278 tools/sg_xml_unit_converter.py may help (but it's just a warning and will probably ever be).
1281 * s4u::Host is now the preferred public interface to the Host features.
1282 sg_host_* functions are C bindings to the exact same behavior
1283 MSG_host_* and SD_workstation_* are #define to the sg_host_* ones
1286 * The examples were completely reorganized (in C and Java), for your browsing pleasure.
1287 * Kill all deprecated functions (the ones you had when declaring MSG_DEPRECATED).
1288 They were deprecated since a few years, and probably did not even compile anymore.
1291 * The API has been profoundly modified to directly use the core objects instead of redefining its own.
1292 SD_Workstation_t and SD_link_t are now sg_host_t and sg_link_t respectively.
1293 Some functions have also been renamed for consistency. Backward compatibility is maintained, but users are
1294 encouraged to update their codes. A list of the modified functions can be found at the end of
1295 include/simgrid/simdag.h
1298 * simgrid::simix::kernelImmediate() is the closure callback. It ensures that
1299 the lambda or closure passed as a parameter will run in kernel mode.
1300 All the callback functions should be rewritten to that interface at some point.
1303 * Reorganizing and cleaning the internals all around the place.
1306 * Remove old default barrier/bcast buggy algorithms (see #18407)
1307 * Various bug fixes to handle more codes
1308 * Remove the need for the --foreground option of smpirun (it is still
1309 accepted for backward compatibility).
1312 * Kill the setset data container: MC don't use it anymore.
1313 * Kill the queue data container: it made more sense with GRAS.
1314 * Kill the xbt_peer_t data type: it's useless without GRAS.
1315 * Kill rm_cb feature of config sets: it was never useful.
1316 * Kill graphxml parsing feature. It was not used.
1317 * Kill the deprecated code protected by XBT_USE_DEPRECATED
1319 - xbt_dynar_sort_strings(), when the content is char*
1320 - xbt_str_parse_int / xbt_str_parse_double, wrapping strtol/strtod
1321 They throw exceptions on invalid input;
1322 * C++ support for declaring CLI flags (simgrid::config::Flag);
1323 * class for abstracting different signal backends (simgrid::xbt::signal).
1324 with no external dependencies (we need very simple signals).
1327 * refactoring and cleanup of the code;
1328 * ongoing process to cleanly separate the model-checking algorithms
1329 from the code model-checking support.
1331 -- Wed Apr 27 21:00:53 CEST 2016 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1333 SimGrid (3.12) stable; urgency=low
1335 The Facelift Release.
1338 * Require g++ v4.7 at least to not speak prehistorical C++.
1339 * Require Boost 1.48 (for signal2 component).
1340 * Java must be version 7 at least when activated.
1341 * Builds on Windows again (including Java bindings).
1342 * Tracing is now always enabled (no way to turn it out)
1343 * Remove GTNetS. It was not working anyway.
1344 * Various cleanups in the cmake scripts.
1345 * Move headers around to sort them out on installed systems:
1346 - instr/instr.h -> simgrid/instr.h
1347 - instr/jedule/* -> simgrid/jedule
1348 - simdag/datatypes.h was removed
1349 - simdag/simdag.h -> simgrid/simdag.h
1350 - msg/datatypes.h was removed
1351 - msg/msg.h -> simgrid/msg.h
1354 * Interface improvement:
1355 - Rename MSG_host_is_avail(h) to MSG_host_is_on(h)
1356 - Sanitize the interface in MSG_task_ module:
1357 - Merge two functions that were close enough but misleading:
1358 set_compute_duration(t) -> set_flops_amount(t)
1359 get_remaining_computation(t) -> get_flops_amount(t)
1360 - set_data_size(t) -> set_bytes_amount(t)
1361 get_data_size(t) -> get_bytes_amount(t)
1362 - Massive cleanups in the functions related to the energy
1363 - MSG_host_get_pstate_number() -> MSG_host_get_nb_pstates()
1364 - New: MSG_host_get_pstate()
1366 - msg/energy/onoff: switching hosts on and off
1368 * Interface improvement:
1369 - Rename Host.isAvail() to Host.isOn()
1370 - Rename Process.currentProcess() to Process.getCurrentProcess()
1371 - Rename Task.setDataSize() to Task.setBytesAmount()
1372 - Merge Task.getRemainingDuration() and Task.getComputeDuration() into Task.getFlopsAmount()
1374 - #18874: Actually allows the GC to reclaim tasks
1378 - SIMIX_process_throw: raises an exception in a remote process
1379 * Refactoring: Separate sub-modules
1380 - libsmx: the public interface, as libc in a real system
1381 - popping: the strange dance that converts a user request into a kernel handling
1382 - smx_context_*: the virtualization mechanisms that embed the user code
1383 - smx_*: the handling of each simcalls
1384 * Interface cleanup:
1385 - simcall_host_set_power_peak_at -> simcall_host_set_pstate
1386 * Rename smx_action_t into smx_synchro_t, making explicit that these
1387 things are used to synchronize processes with their environment.
1388 For example, a communication is a sort of synchronization involving
1389 the communicating processes (that may block until the exchange) and
1390 the platform. The same can be said from computations, etc.
1392 - #18888: segfault when a process ends before its kill_time
1396 - 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.
1397 - MPI_Keyval*, MPI_Attr* functions, as well as MPI_Comm_attr*, MPI_Type_attr* variants (C only, no Fortran support yet)
1398 - MPI_Type_set_name, MPI_Type_get_name
1399 - MPI_*_c2f and MPI_*_f2c functions
1400 - MPI_Info_* functions (beware, get_nthkey may not follow the insertion order)
1401 - MPI_Pack, MPI_Unpack and MPI_Pack_size functions
1402 - Activate a lot of new tests from the mpich 3 testsuite
1404 - Constant times can be injected inside MPI_Wtime and MPI_Test through options smpi/wtime and smpi/test
1405 - InfiniBand network model added: Based on the works of Jerome Vienne
1406 http://mescal.imag.fr/membres/jean-marc.vincent/index.html/PhD/Vienne.pdf
1407 - When smpi/display_timing is set, also display global simulation time and application times
1408 - Have smpirun, smpicc and friends display the simgrid git hash version on --git-version
1409 * Collective communications
1410 - 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
1411 - 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/).
1412 - Support for Rabenseifner Reduce/Allreduce algorithms (https://fs.hlrs.de/projects/par/mpi//myreduce.html)
1414 - Replay now uses algorithms from wanted collective selector
1415 - Replay can be used with SMP-aware algorithms
1416 - Memory occupation of replay should now be contained (temporary buffers allocated in collective algorithms should be shared between processes)
1417 - 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.
1419 - [#17799]: have mpi_group_range_incl and mpi_group_range_excl better test some corner cases
1420 - Correctly use loopback on fat-tree clusters
1421 - Asynchronous small messages shouldn't trigger deadlocks anymore
1422 * Energy/DVFS cleanup and improvement
1423 - smpi_set_host_power_peak_at() -> smpi_set_host_pstate()
1424 - new: smpi_get_host_pstate()
1427 - "Full" network optimization flag was broken since Surf++
1428 - Better handling of precision flags in maxmin
1429 - Fix bug causing sometimes "Impossible" errors
1430 - Properly pass cluster properties to included hosts
1431 * Improvement of the Energy plugin.
1432 - Always update the consumption before returning that value
1433 - New property: watt_off to denote the dissipation when the host is off
1434 - New functions getWattMinAt and getWattMaxAt to retrieve the
1435 dissipation of pstates that we are not currently at.
1436 * Java: class NetworkLink renamed to Link
1437 * New function: simcall_process_get_kill_time()
1438 * Massive rename s/workstation/host/
1439 - That's intrusive, but that's good for the project consistency. Sorry.
1440 - Change config option "workstation/model" into "host/model"
1443 - Add a xbt_heap_update function, to avoid costly xbt_heap_remove+xbt_heap_insert use
1444 - Add a xbt wrapper for simcall_mutex_trylock (asked in [#17878])
1445 - Add two new log appenders: rollfile and splitfile. Patch by Fabien Chaix.
1446 - xbt_dirname and xbt_basename for non-POSIX systems
1448 * The model checker now runs as a separate process.
1449 * The model checker runs must now be launched with the new simgrid-mc program.
1450 * Record/Replay: the MC can display a textual representation of a path in the
1451 execution graph. It can then be replayed outside of the model checker.
1453 -- Mon Oct 12 06:02:41 CEST 2015 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1455 SimGrid (3.11) stable; urgency=low
1460 * Normalizing pointers addresses tool for better diff between logs
1463 * Add cloud examples using new VMs
1464 - examples/msg/cloud/two_tasks_vm.tesh
1465 - examples/msg/cloud/simple_vm.tesh
1466 - examples/java/cloud/cloud.tesh
1467 - examples/java/cloud/migration/migration.tesh
1468 * Add java surf examples:
1469 - examples/java/surfPlugin/surf_plugin.tesh
1470 - examples/java/reservationSurfPlugin/reservation_surf_plugin.tes
1471 - examples/java/surfCpuModel/surf_cpu_model.tesh
1472 * Add SMPI+MSG example:
1473 - examples/smpi/smpi_msg_masterslave/
1478 - msg task destroy cancel test
1479 - msg_host on/off test
1480 * Move all tests in testsuite to teshsuite (adding tesh files)
1481 * Restructure teshsuites
1482 - one folder for each kind of test
1483 * Restructure AddTests.cmake
1485 - structure the order of tests (with sections)
1488 * Add virtual machine
1489 - creation of a VM on a PM
1490 - migration of a VM from a PM to another PM
1492 - MSG_process_join(msg_process_t process, double timeout)
1493 - msg_bar_t MSG_barrier_init(unsigned int count)
1494 - int MSG_barrier_wait(msg_bar_t barrier)
1495 - void MSG_barrier_destroy(msg_bar_t barrier)
1496 - msg_as_t MSG_environment_as_get_by_name(const char * name)
1497 * New option "msg/debug_multiple_use" to help debugging when a task is used
1500 - Improvements and finalization of MSG_storage, MSG_file APIs and their
1502 - Increase code coverage in test suites
1506 * Protect context stacks against stack overflow. The number of protected memory
1507 pages allocated on the top of each stack (1 by default) can be configured
1508 with the new command line option --cfg=contexts/guard_size:<value>.
1509 * Simcalls are now generated by a python script that
1510 - generates files included by SimGrid
1511 - checks that all the functions exist, and proposes prototypes
1513 - remove sem_destroy, file_set_data, comm_destroy, vm_set_state,
1514 host_set_data, host_get_data
1516 - simcall_process_join(smx_process_t process, double timeout)
1517 * Fix bug where sleeping processing could not be suspended.
1520 * Translate surf models from C to C++
1521 - Generic classes for all models: Model, Resource, Action
1522 - A generic interface for each kind of model (CPU, Network, Storage
1523 Workstation, WorkstationVM)
1525 * Translate surf routings from C to C++
1526 * Add callbacks using sigc++ or boost::signals2
1527 - Add callback functions for resource creation/destruction
1528 - Add callback functions for action state change
1529 - Handle Energy as a plugin
1530 * Replace swag by boost::intrusive
1531 * Add new routing models for clusters. For documentation, see
1532 http://simgrid.gforge.inria.fr/simgrid/latest/doc/platform.html#pf_cluster
1533 - tori, with topology="TORUS" and topo_parameters="ndim1,ndim2,...,ndimn"
1534 parameters for cluster tag
1535 - Fat trees, with topology="FAT_TREE" and
1536 topo_parameters="h;m1,...,mh;w1,...,wh;p1,...,ph" parameters for cluster tag
1537 - see examples/platforms/torus_cluster.xml and
1538 examples/platforms/fat_tree_cluster.xml
1539 * More documentation
1542 * Hostfiles support host:nb_processes construct to deploy several processes on
1544 * Collective communication algorithms should not crash if used with
1545 improper number of nodes and report the error.
1546 * SMPI now partially supports MPI_Topologies: MPI_Cart_create, MPI_Cart_shift,
1547 MPI_Cart_rank, MPI_Cart_get, MPI_Cart_coords, MPI_Cartdim_get,
1548 MPI_Dims_create, MPI_Cart_sub are supported.
1549 * New interface to use SMPI programmatically (still depends on MSG for
1550 some parts, see examples/smpi/smpi_msg_masterslave):
1551 - SMPI_app_instance_register(const char *name, xbt_main_func_t code,
1555 * Global variables privatization in MPI executables is now performed at runtime
1556 with the option smpi/privatize_global_variables (default:no).
1557 Limitations: Linux/BSD only, with mmap enabled. Global variables inside
1558 dynamic libraries loaded by the application are not privatized (static
1559 linking with these libraries is advised in this case)
1562 * Options defined in XML work correctly now.
1565 * New cmake option, enable_lib_in_jar, to control whether native libraries are
1566 copied into simgrid.jar or not (ON by default). Use this option if you want
1567 to reduce the size of the installed simgrid.jar, *and* the native libraries
1568 are kept installed elsewhere.
1569 * Surf binding with SWIG (code generated in maintainer mode only):
1570 - plugin to handle callbacks
1571 - CPU model only for the moment
1574 * Supernovae build mode is definitively removed. It was used to improve
1575 inlining and inter-module optimizations. It is nowadays superseded by
1576 link-time optimizations commonly available in compilers.
1577 * Update ns-3 find lib. Bindings for ns-3 should work again now.
1578 * Add boost dependency for surf++
1579 * Add new macro for tests
1580 - ADD_TESH(name <tesh_args>)
1581 - ADD_TESH_FACTORIES(name "thread;ucontext;raw" <tesh_args>)
1585 - xbt_bar_t XBT_barrier_init(unsigned int count)
1586 - int XBT_barrier_wait(xbt_bar_t barrier)
1587 - void XBT_barrier_destroy(xbt_bar_t barrier)
1588 * Make the xbt_os_time module public
1590 -- Sat May 31 22:39:38 CEST 2014 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1592 SimGrid (3.10) stable; urgency=low
1594 The Clean Diaper Release, a.k.a. SimGrid is leak-free.
1597 * Reintegrate Java to the main archive as desynchronizing these
1598 package is not acceptable anymore (Java is now considered stable)
1599 * Add explicit synchronization facilities through semaphores
1600 * Bug fix: Task.setDataSize() only changed the C world, not the value
1601 cached in the Java world
1604 * Dramatically change the way files are handled. API and internals changed, but
1605 this part of MSG was not considered as production grade either.
1606 * Add explicit synchronization facilities through semaphores
1607 * Add a new function MSG_host_get_process_list()
1608 * Preliminary DVFS support (see examples/msg/energy/ for details)
1611 * SMPI is now included directly in the libsimgrid as the windows
1612 linker doesn't force us on splitting it anymore.
1613 * Improvements of the SMPI replay tool:
1614 - Most of the collective communications are now rooted in the same process as
1615 in the original application.
1616 - Traces now rely on the same MPI data type as the application (MPI_BYTE was
1617 used until now). Multiple data types can now be used in a trace.
1618 - The replay tool now supports traces produce either by TAU or a modified
1620 - Bug Fix: the compute part of the reduce action is now taken into account.
1621 - Gatherv collective is now supported
1622 - SimGrid (SMPI for now) can generate replay traces as well. Option -trace-ti
1623 of smpirun outputs time independent traces for the current run. One file
1624 is created per process. If too many processes are simulated, this behavior
1625 can be changed to one file for all processes by using the
1626 tracing/smpi/format/ti_one_file flag
1627 * smpirun generates the host file if needed (with given host count and platform)
1628 * Integration of more than 100 STAR-MPI, MPICH, OpenMPI collective algorithms
1629 - allows to select one in particular with --cfg=smpi/coll_name:algorithm
1630 - allows to use the decision logic of OpenMPI(1.7) or MPICH(3.0.4) by setting
1631 --cfg=smpi/coll_selector:(mpich/ompi)
1632 * Support for new functions: MPI_Issend, MPI_Ssend, Commutative operations in
1634 * Add a --cfg:tracing/smpi/internals option, to trace internal communications
1635 happening inside a collective SMPI call.
1636 * Fix the behavior of complex data types handling.
1637 * Make MPI_Wtime another synchronization point to take computations into
1639 * Replace MPICH-1 test suite by the one from MPICH 3.0.4. Can be built using
1640 enable_smpi_MPICH3_testsuite flag in cmake. Run with ctest.
1641 * Add all missing Fortran bindings, SMPI should work with Fortran 90
1642 (no privatization of global variables yet)
1643 * Preliminary DVFS support (see examples/smpi/energy/ for details)
1646 * Verification of liveness properties is now available for SMPI applications
1647 (in addition to MSG applications)
1648 * Bugged examples using SMPI in examples/smpi/mc/
1649 * Add --cfg=model-check/visited option. Allows the verification of infinite
1650 programs. Detection of loops in the execution thanks to the system state
1651 comparison and reduction of the state space to explore. Can be combined with
1652 DPOR for safety properties.
1655 * Allow to change SimGrid configuration (see --help) within the code
1656 thanks to SD_config() as it can be done in MSG.
1657 * Add a new function SD_task_set_amount() upon user request.
1660 * Handle units for values (10ms, 10kiloflops, 10Bps, 1GB, ...)
1661 * Remove rule based routing (no more PCRE dependency)
1662 * Add a limiter_link option to cluster tag, to specify a maximum reachable
1663 bandwidth in fullduplex mode when it is less than twice the nominal bandwidth.
1664 * Add a loopback_bw and loopback_lat options to cluster tag.
1665 * Fix the peer tag that could not be mixed with other AS within a Vivaldi
1666 routing. Now peers are encapsulated in an AS and have their own private
1667 router but this is transparent.
1670 * Our own implementation of getline is renamed xbt_getline, and gets
1671 used even if the OS provide a getline(). This should reduce the
1672 configuration complexity by using the same code on all platforms.
1673 * New type: xbt_cfg_elm_boolean.
1674 * Allow to use yes/no for boolean configuration options in the command line.
1675 * Allow to disable SimGrid cleanups at exit from command line option.
1676 There are situations where one may want a simulation to end with an exit.
1677 Unfortunately, calling exit may cause SimGrid to segfault, which is quite
1678 annoying when scripting around the simulator. Adding a
1679 --cfg=clean_atexit:no allows to circumvent this issue.
1682 * Lots of memory leaks were corrected in this release.
1683 There is no known memory leaks anymore, in all of our 600+ tests.
1684 * New command line option --version, to get SimGrid version information.
1685 Packagers may want to add extra words to SIMGRID_VERSION_EXTRA defined in
1687 * Supernovae builds are deprecated, and expected to be removed in the next
1690 -- Sun Nov 17 00:26:44 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1692 SimGrid (3.9) stable; urgency=low
1694 The Grasgory release: GRAS is really dead now.
1696 * Complete overhaul of the internal host structures scheme.
1699 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
1700 was considered as experimental and badly maintained since then.
1701 * Keeping it was thus a trap to our potential users, that could take
1702 it instead of MSG or SMPI by mistake despite is pity state.
1703 * GRAS seems to have very few users (if any), and no one volunteered
1704 to maintain it further. It also induces a lot of XBT code (for
1705 portability sake), that must be maintained too.
1706 * For all these reasons, we killed GRAS. If someone wants to revive it
1707 in the future, don't cry, our git history still remembers of GRAS.
1710 * Major overhaul. Merge our documentation again as time proved that
1711 splitting it was really not helping our users.
1712 * Further improve the developer documentation to help newcomers
1713 hacking on SimGrid itself. The user documentation (and in
1714 particular, the beginner documentation) is still in a sorry state.
1717 * Now works on Windows too!
1718 * Much more extensive test suite, from MPICH
1721 * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
1722 (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
1723 dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
1724 * Bug fix: let task be scheduled when the last dependency to be solved is
1725 a control dependency.
1726 * Remove SD_load_environment_script function.
1727 Use the C sg_platf function if you want to declare a platform
1731 * New function: MSG_process_get_number()
1732 * Old function documented: MSG_config()
1733 * Remove MSG_load_platform_script function
1734 Use the C sg_platf function if you want to declare a platform
1738 * Change the default value of the TCP_gamma constant (maximal size of TCP
1739 congestion window) to a more realistic 4MiB value. If you notice changes in
1740 your simulation results, you can fall back to the previous 20k tiny window
1741 by adding --cfg=network/TCP_gamma:20000 on command line.
1742 * (Hopefully) fix a bug wrt periodic availability and state traces
1743 * Bug fix: use default values at start when first event in availability/state
1744 trace is not at time 0.
1747 * remove the "new_" part of function name sg_platf_new_trace_connect
1748 (resulting in sg_platf_trace_connect), since it does not create
1752 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
1753 use case where it's really mandatory, and maintaining it was a pain in
1755 * New: xbt_fifo_search(), search an item with a user-provided
1756 comparison function instead of dumb pointer comparison.
1759 * Fix the lua deployment:
1760 Use `simgrid.init_application()` before deployment instead of
1761 `simgrid.msg_register_application()` after.
1764 * Transfer the tracing files into the corresponding modules.
1766 -- Tue Feb 5 11:31:43 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1768 SimGrid (3.8.1) stable; urgency=low
1770 The "we are told that some people want to also *install* the simgrid
1773 * Add missing file "tesh.1" to the archive.
1775 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1777 SimGrid (3.8) stable; urgency=low
1779 The Psssshiiiit release: SimGrid jumps into the Cloud.
1782 * Add an experimental interface to manipulate VMs. They are mainly
1783 process groups with very few intrinsic semantic, but they should
1784 allow you to build the semantic you want easily.
1785 * New function: MSG_host_set_property_value()
1786 * New function: MSG_process_on_exit(). To clean memory in all cases.
1787 * Bug fixes that made the host (and link) failures unusable.
1788 * Add a way to auto-restart process when the host in which they are
1789 executing comes back (ON_FAILURE="RESTART" on deployment file,
1790 MSG_process_auto_restart_set).
1791 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
1792 please stop using the old ones, they are DEPRECATED.
1794 * Deprecate functions MSG_global_init() / MSG_global_init_args()
1795 Please use MSG_init() instead. (reducing the amount of entry
1796 points in the library helps us).
1797 * Make it impossible to link against the wrong version of the lib
1798 * Deprecate MSG_clean(). No need to call it anymore.
1799 * Function MSG_get_host_number() is not deprecated anymore.
1802 * Split the doc into a user guide and a reference guide.
1803 * Start a developper guide to help people hacking on SimGrid.
1806 * Enable tracing by default. This modules rocks you should use it.
1807 * Remove option custom_flags. Now use environment variables CFLAGS
1809 * Use default cmake things to detect lua instead of home grown ones.
1810 * New option "enable_mallocators" to disable mallocators, for debugging
1811 purpose ("on" by default).
1814 * Bug fixes around the resource failures: don't let the processes
1815 survive the host they are running onto.
1816 * Add an interface to auto-restart processes when the host in which they are
1817 executing comes back.
1818 * Ensures that SIMIX_clean is called automatically. It's not part of
1819 the public interface anymore (bindings should be updated).
1822 * Bug fix for when SD_Simulate is called with a positive value: be careful
1823 when comparing doubles. Sometimes they are different for non significant
1825 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
1826 parallel task whose initial work is distributed among host according
1827 to the Amdahl's law. Such tasks are created with a parameter alpha
1828 that corresponds to the non-parallelizable part of the computation.
1829 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
1830 between two sets of workstations assuming a 1D block distribution (each
1831 workstation owns a similar share of data) on both sides.
1833 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
1834 Data redistribution will be automatically scheduled once parent and child
1835 are both scheduled. The filling of computation_amount and
1836 communication_amount structures is now done seamlessly thanks to the chosen
1838 * New function SD_workstation_dump to display various information
1839 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
1840 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
1841 bandwidth on the route onto which the task is scheduled and the amount of
1843 To divide the nominal bandwidth by 2, the rate then has to be:
1844 rate = bandwidth/(2*amount)
1845 * Compute tasks that have failed can now be rescheduled and executed again
1846 (from their beginning)
1847 * Increasing source code coverage (src/simdag is now covered at 95.8%
1851 * Re-implement time-independent trace replay using SMPI (at the
1852 smpi_smp_* level) instead of MSG. This should replace
1853 examples/msg/actions/actions.c
1854 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
1855 hindexed and structs)
1856 * Implement the exchange of non-contiguous data.
1857 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
1858 * Correct behavior of smpi/sender_gap and set its default value to 0
1859 * Add option to asynchronously send small messages to allow better
1860 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
1861 specifies the size in bytes under which messages will be asynchronously sent.
1862 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
1863 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
1866 * New C interface to define a platform: XML is now optional.
1867 For more info, please check include/simgrid/platf.h.
1868 * New interface to define random platforms from the C:
1869 For more info, please check include/simgrid/platf_generator.h and
1870 examples/msg/masterslave/masterslave_platfgen.c
1871 * Export a sg_cmdline dynar containing all the arguments we got from
1875 * Two new tracing options for adding comments to trace file so you
1876 can track your experiments (see --help-tracing for details).
1877 * New option to generate an impoverished trace file (--cfg=tracing/basic:1)
1878 * Adding the SimGrid version that generated the trace file as a comment.
1879 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
1880 * Fix to avoid key clashes on Paje links
1881 * Other minor fixes related to the Paje specification
1884 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
1885 and renamed to xbt_str_hash() and xbt_str_hash_ext().
1886 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
1887 * Greatly improve the robustness of mmalloc to user errors (such as
1888 using an area after freeing it, or freeing it twice)
1890 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1892 SimGrid-java (3.8.1) stable; urgency=low
1894 * New module: org.simgrid.trace.Trace (SimGrid trace bindings)
1895 Warning: all methods are visible, but only some of them are
1896 implemented so far. Check the source (src/jtrace.c)
1897 for further information.
1898 * New module: org.simgrid.msg.File (SimGrid File management functions)
1899 * New Module: org.simgrid.msg.VM (SimGrid interface to mimick IAAS clouds)
1900 * Change the meaning of Process.restart: now restart the process from
1901 the beginning, like MSG_process_restart in C.
1902 * Add Process.setAutoRestart: handling of process restart when failed
1904 * Add Process.getProperty, Host.getProperty, Host.getProperty: allows
1905 you to retrieve the properties of the processes/hosts
1906 * Deprecate Msg.clean(): you can just forget about it now.
1907 * New function Process.getCount(), that only works when compiling
1908 with the not yet released version 3.9 of the C library.
1910 * New context factory based on Coroutines. It mandates a modified JVM
1911 but then, the simulations run about five times faster, and there is
1912 no limit to the amount of processes (beside of the available memory).
1914 -- 2012-12-04 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1916 SimGrid (3.7.1) stable; urgency=low
1919 * Restore the prototype of MSG_process_create_with_environment() to
1920 the pre-3.7 situation by removing the kill_time argument.
1921 * Add a MSG_process_set_kill_time() function instead.
1924 * Fix weird behaviors when dealing with parallel tasks.
1927 * Simgrid is now built as a dll.
1928 * Simgrid-java now works on Windows.
1929 * Simgrid-Java is now included into Windows package.
1932 * First pre-build package for MacOSX.
1935 * Fix compilation when using MSG_USE_DEPRECATED.
1936 * Fix some compilation issues on Macs and Windows.
1937 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
1938 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
1940 We discovered that the Lua console is broken, but we are missing the
1941 manpower to fix it right now. The problem existed in 3.7 too, so we
1942 are not blocking the release for that. Sorry if you depended on this
1943 feature, any help would be really welcome.
1945 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1948 SimGrid-java (3.7.1) stable; urgency=low
1950 The "Java aint got to be bloated and slow" release
1953 * Various internal cleanups and performance improvement
1954 Simulations are expected to run up to twice faster or so
1955 * Make Process.kill(process) an instance method, not a static one
1956 * User processes are not java.lang.Thread subclasses.
1957 This breaks the compatibility (sorry), but previous API was
1958 brain-dead, making it impossible to have non-trivial
1959 initializations in the process constructor.
1960 * Require a full constructor per Process sub-class.
1961 Kinda breaks the compatibility (sorry), but this allows a much more
1962 efficient way to launch the processes at simulation startup.
1963 * Do not embeed our version of semaphores, java 1.5 can be considered
1964 as sufficiently prevalent for us to not dupplicate its features.
1968 * Add examples for almost every part of the API
1969 We spotted and fixed a lot of bugs in the process
1971 * New module: asynchronous communication API
1972 * New function: Process.sleep()
1973 It takes milliseconds as argument, just as java.lang.Thread.sleep()
1974 * New module: org.simgrid.msg.Mutex (SimGrid mutexes)
1975 * New module: org.simgrid.msg.RngStream (RngStreams random generators)
1977 -- 2012-06-12 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1979 SimGrid (3.7) stable; urgency=low
1981 The "spring cleanups (before the next Big Project kicks in)" release.
1984 * We can specify the SMPI latency/bandwidth factor with command line
1985 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
1986 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
1987 You can also use the "config tag" from platform file by adding this line
1988 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
1989 (see "example/platforms/tag_config.xml" to use "config tag").
1990 Note that the command line supersedes the platform file configuration.
1991 * Change the correction factors used in LMM model, according to
1992 the latest experiments described in INRIA RR-7821.
1993 Accuracy should be improved this way.
1994 * Use the partial invalidation optimization by default for the
1995 network too. Should produce the exact same results, only faster.
1996 * Major cleanup in surf to merge models and split some optimization
1997 mechanisms from the core of the models. As a result you can now
1998 specify which model to use (e.g., --cfg=network/model:LV08
1999 --cfg=cpu/model:Cas01) and which optimization mode to use
2000 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
2001 Incompatible combinations should err at initialization. See
2002 --help-models for the list of all models and optimization modes.
2003 * The CLM03 workstation model was dropped for simplicity because it
2004 used the deprecated CM02 network model. Use default instead.
2005 * Rename the TCP_gamma configuration option to network/TCP_gamma
2006 * Rename the coordinates configuration option to
2007 network/coordinates, and document it
2008 * Use now crosstraffic keyword instead of the terribly misleading
2009 fullduplex keyword. It is activated by default now in the current
2010 default model, use --cfg=network/crosstraffic:0 to turn it off.
2011 * Ongoing refactoring the model parsing to make XML files optional
2012 See include/simgrid/platf.h for details (still to be completed)
2015 * Major overhaul of the documentation. Almost instructive now :/
2016 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
2017 functions and friends. This interface was considered as
2018 deprecated since over 2 years, it's time to inform our users that it is.
2019 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
2020 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
2021 use these (crappy) functions in your code.
2022 These functions will be removed soon. Stop using them now.
2023 * Deprecate MSG_get_host_{table,number}
2024 Implement MSG_hosts_as_dynar() instead.
2025 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
2026 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
2029 * Stabilize the parallel execution mode of user contexts
2030 * Introduce configuration variables to control parallel execution:
2031 - contexts/synchro: Synchronization mode to use when running
2032 contexts in parallel (either futex, posix or busy_wait)
2033 - contexts/parallel_threshold: Minimal number of user contexts
2034 that must be part of a scheduling round to switch to parallel
2035 execution mode (raw contexts only)
2036 * Fix bugs that prevented to use suspend/resume along with
2037 synchronization structures.
2038 * Fix bugs in process termination that lead to invalid memory access
2039 in very specific conditions.
2042 * Introduce a parallel mode for the models (controlled by surf/nthreads
2043 configuration item). In our tests, running the models in parallel
2044 never lead to any speedups because they are so fast that the gain
2045 of computing each model in parallel does not amortizes the
2046 synchronization costs, even when ultra fast futexes are used.
2047 This is released anyway because YMMV.
2050 * Performance boost by using a swag internally to compute the set of
2051 tasks that are finished and should constitute the return value of
2055 * Enable it by default now that it is considered rather stable.
2058 * Documentation of the tracing functions.
2059 * Performance gains when tracing categorized/uncategorized resource
2060 utilization by avoiding calls to get route when updating resource
2061 variables. LMM constraints are being used instead.
2062 * API changed to set task categories. Use MSG_task_set_category instead
2063 of TRACE_msg_set_task_category, and SD_task_set_category instead
2064 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
2065 * Bugfix for graphicator, routes not correctly obtained, memory leaks
2066 * Examples for link user variables added (see at examples/msg/tracing/)
2067 * Deprecated function TRACE_msg_set_process_category completely removed
2068 * Trace header updated according to the latest Paje file format
2069 * Tracing network lazy updates, no longer obligate users to use full updates
2070 * --cfg=tracing/platform:1 also registers power/bandwidth variables
2071 * Experimental: let user code declare/set/push/pop application states for hosts
2072 * API changed to allow the manual creation of graph configuration files
2073 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
2076 * Improve the API of Lua MSG bindings, using the Lua spirit.
2077 * Each simulated process now lives in its own Lua world (globals are
2078 automatically duplicated). It helps writing simulators. Will allow
2079 to run Splay programs within SimGrid in the future.
2080 * Add a Chord example in Lua, equivalent to the MSG one.
2083 * Start the implementation of a solution to express temporal
2084 properties, not only local assertions. This is still an
2085 experimental work in progress, stay clear from it to be safe.
2089 - Add new runtime parameters --help-logs and --help-log-categories
2090 to display information about supported logging parameters and
2092 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
2093 don't exists anymore.
2094 * Mallocators: allow value NULL for the reset function.
2096 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
2097 create homogeneous dictionaries, where all the elements share the
2098 same free function. Non homogeneous dictionaries will be
2099 deprecated in the next release.
2100 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
2101 - Multi-level dictionaries are deprecated.
2103 - new function xbt_dynar_search_or_negative() that is useful when
2104 you have less than 2 million elements in your dynar and don't
2105 want of the extra complexity of catching exceptions when the
2106 element is not found.
2108 - Make xbt_os_thread module (for thread portability) public.
2109 Documentation is still to come, sorry.
2111 - Cleanups and simplifications to make it maintainable again.
2112 - Exotic features (such as memalign and valloc) were removed.
2113 - The metadata were extended and improved so that the
2114 model-checker becomes able to explore and inspect the heaps.
2115 - This may induce a performance drop when enable_model-checking is
2116 ON in cmake (even if it's not used in the simulation), but it is
2117 necessary at this point to get MC working.
2119 Turn model-checking OFF if simulation performance matters to you.
2120 Not enabling it at runtime is not enough, disable it in cmake.
2122 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2125 SimGrid (3.6.2) stable; urgency=low
2127 The "Not coding new stuff allows to polish old things" release.
2130 * New bindings to the NS3 packet level simulator (experimental)
2131 * Use the raw (efficient) execution contexts instead of the sysv
2132 (portable) ones when possible.
2133 * libpcre is now mandatory in any cases since not using it led to
2134 severe performance loss and possibly other issues
2135 * Update the XML platforms:
2136 - G5K: include the latest machine in Nancy
2137 - GridPP and LCG: new platforms
2138 * Documentation was partially updated, at least (more to come)
2140 Bug fixes, cosmetics and small improvements
2141 * Free terminated processes before the end of the simulation to avoid
2142 exhausting the memory of users having very dynamic amount of
2144 * Bug fix and cosmetics about canceling non-running tasks
2145 * Bug fix about the dot loader's issues when using libcgraph
2148 * Create an installer for windows with nsis (amd64 and win32)
2149 - Add an hello world project to illustrate simgrid project creation.
2150 - Embed libpcre into the Simgrid installer to avoid
2151 its compilation burden
2152 * The raw execution contexts should work on Apple now
2153 * Port to Windows 64 bits
2154 - Sysv contexts now have an implementation for this arch
2155 - GRAS communication features now support this arch
2156 * Drop support for borland compiler on windows
2157 - this code was not maintained, and we kinda depend on gcc nowadays
2158 * Fix portability issues on kfreebsd/gnu: build error about semaphores
2159 * Fix portability issue on unstable ubuntu: linker became picky on
2162 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2164 SimGrid (3.6.1) stable; urgency=low
2166 The "Oops, we broke Macs too" release
2169 * Fixed contexts detection so that raw ones are used when possible
2170 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
2171 leads to a strange error, with user code segfaulting sometimes when
2172 the generated code is not perfectly aligned (which is not
2173 controllable from the user side, depends on the amount of code)
2176 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
2178 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2180 SimGrid-java (3.6) unstable; urgency=low
2183 * Split of every thing from simgrid v3.5 into a separate package.
2185 -- 2011-10-05 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2187 SimGrid (3.6) stable; urgency=medium
2189 The Summer Release, also known as the "OMG! They Killed Kenny!" version
2192 * Bindings now constitute their own package, separated from the main one.
2193 Rationale: reduce our maintenance nightmare by reducing the module coupling
2194 They will soon be released on their own on gforge.
2196 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
2197 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
2199 GRAS: It is not considered as stable anymore, but experimental. Sorry.
2200 * It's not quite deprecated for now because we have no replacement,
2201 but it may soon become the case.
2204 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
2205 * Fortran: New user-level cache variable to store the rank of the running
2206 process. This improves performance by an order of magnitude.
2207 * C: New coccinelle script to automatically locate and modify global and
2208 local static variables.
2209 * Improved SMPI network model with a sender-side gap to account for multiple
2213 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
2214 only say if a communication is finished, no matter whether it succeeded or
2215 failed. You can call MSG_comm_get_status() to know the status of a finished
2217 * New function MSG_task_dsend() to send a task and detach it. When a
2218 communication is detached, you are never notified of its success or failure
2219 and the memory is released automatically once it is finished. This function
2220 is useful when you don't care about the end nor the success of a
2222 * Change the prototypes of action replay. Sorry for inconvenience,
2223 but this is really more efficient this way (and to adapt your code,
2224 you just have to fix the initialization, that shouldn't be too long)
2225 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
2226 ever managed to do anything useful with it.
2227 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
2228 takes a dynar of communications. It returns immediately and gives the
2229 index of a finished communication (if any).
2230 * New example: a basic implementation of the Chord P2P algorithm.
2233 * New model for multi-core CPUs. You can now use the core attribute to
2234 precise the number of cores of a host. This is a basic model. Every
2235 process running on the host receives at most the power provided in
2236 the DTD (throughput<=power). Total throughput of process cannot exceed
2238 * New peer tag. This peer tag creates a tiny AS comprising a host and a
2239 router linked by an up-link and a down-link (possibly asymmetrical).
2240 This kind of pattern allows to easily build last-mile model style platforms.
2241 Aggregating such patterns in a rule-based AS is thus the technique of
2242 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
2243 * New model for Vivaldi routing. We transformed the Vivaldi network model
2244 into a Vivaldi routing model (based on the rule-based model). This allows to
2245 combine Vivaldi based latencies with last-mile platforms.
2248 * Added a check for NaN of IEEE754 infinite in the double entries of
2250 * Introduce a new context factory "raw", highly inspirated from the
2251 ucontext factory, but using manually crafted functions in assembly to
2252 do the work in an efficient manner.
2253 * Allow to change the used context factory at run time, not only at
2254 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
2255 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
2256 contexts at runtime (only with raw contexts or ucontexts).
2257 * Completely rewrote this module to allow parallel execution of user
2258 processes. Use --cfg=contexts/nthreads:N to execute user processes
2259 with N parallel threads (the default is 1, meaning no parallelism).
2260 * Allow to decide dynamically between sequential and parallel modes.
2261 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
2262 processes in parallel only when their number is greater than or equal to P
2264 * Added a check for NaN of IEEE754 infinite in the double entries of
2268 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
2269 won't output the state of processes when interrupted with Ctrl-C
2270 * Add a new function xbt_dynar_to_array that transforms a dynar into a
2271 NULL-terminated array. This may solve backward compatibility issues
2272 due to the change to return type of SD_simulate. See also:
2273 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
2274 * Add new macros with variable number of arguments.
2275 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
2276 - in xbt/asserts.h: xbt_assert
2277 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
2278 - in xbt/ex.h: THROWF and RETHROWF.
2279 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
2281 * Change xbt_die() to accept a format string with arguments, just like printf.
2282 * New data structure: xbt_lib_t, like a dict but more general and with better
2286 * New configuration options
2287 Options triva/categorized and triva/uncategorized can be used to generate
2288 graph configuration files for Triva visualization tool.
2289 * Configuration option tracing/platform is renamed to tracing/categorized
2290 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
2291 * New TRACE_user_link_variable interface:
2292 User provides the name of the link and the tracing variable to attach to it
2293 * the declaration of tracing categories must be done after the environment
2295 * simpler tracing interface, just one way to declare categories
2296 TRACE_category or TRACE_category_with_color, it is up to you
2297 * links in the trace file are again identified by their names
2298 * trace contains the full platform hierarchy exactly as declared using the ASes
2299 * Options tracing/msg/[task|process]:1 groups the process by hosts
2300 for both cases, tasks and processes must have names that are unique during the simulation
2301 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
2302 * The experimental option tracing/msg/volume is deprecated
2303 its functionality may be reincorporated if needed
2305 The tracing generates a trace file with unordered timestamped events,
2306 because of the way the core simulator (surf) works. A script available
2307 at the tools directory (fix-paje-trace.sh) can be used to put the events
2308 in order. We have changed the tracing so it can generate ordered timestamped
2309 events in the final trace, but depending on the simulator (and how much time
2310 is simulated) that can lead to a huge memory utilization. It is deactivated
2311 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
2313 Build Infrastructure
2314 * Define a SIMGRID_VERSION macro in simgrid_config.h.
2315 - We are trying hard to keep the API stable, but it may happen that
2316 some things change (we're a research project after all, not a
2317 nuclear plant operating system). If such things should happen, you
2318 could rely on that macro to adapt.
2319 - current value: 30600 for 3.06.00, aka 3.6
2320 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
2321 a number that can be compared with SIMGRID_VERSION.
2322 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
2323 assertions and verbose/debug logging events are disabled at compile time.
2325 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2327 SimGrid (3.5) stable; urgency=medium
2330 * New feature to any SimGrid-based simulator: Model-Checking
2331 Check SIN#1 for more details.
2334 * New Model SMPI (three-interval linear regression for correction factors)
2335 See RR-7426, available at http://hal.inria.fr/inria-00527150
2336 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
2337 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
2338 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
2339 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
2340 * See also src/smpi/README
2345 - Tracing API changes: TRACE_start and TRACE_end should not be called
2346 by user-code. They are automatically called by simulators created
2347 with SimDAG, MSG and SMPI if the toolkit is compiled with
2348 tracing_enabled=ON. Categories declaration and utilization remain the
2349 same for MSG and SimDag.
2350 - A function was added to the tracing API to declare categories with
2352 - TRACE_category_with_color (char *category, char *color)
2353 where color must be in the following format
2354 "%f %f %f", red, green, blue
2355 and red, green, blue are float values in the interval [0, 1]
2356 - User can specify NULL as color parameter, or continue calling
2357 TRACE_category (cat)
2358 On that case, the tracing system will define random colors
2359 - The following command-line options are supported:
2360 --cfg=tracing/filename:msg.trace
2361 --cfg=tracing:1 (activate tracing, needed to use others)
2362 --cfg=tracing/platform:1 (categorized resource use)
2363 --cfg=tracing/uncategorized:1 (uncategorized resource use)
2364 --cfg=tracing/msg/task:1 (task creation)
2365 --cfg=tracing/msg/process:1 (process creation, migration)
2366 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
2367 --cfg=tracing/smpi:1 (SMPI interface tracing)
2368 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
2369 - examples of examples/msg/tracing updated
2371 - DAXLoader and DOTLoader functions can generate tasks with categories
2372 - A new function to attribute a category to SD tasks:
2373 TRACE_sd_set_task_category (SD_task_t task, char *category)
2374 * Tracing the MPI interface implemented by SMPI
2375 - Collective operations are traced with states
2376 - Point-to-Point operations are traced with states/links
2377 - Tracing activated by a parameter "-trace filename" passed
2378 to smpirun during execution (considering that simgrid
2379 is compiled with tracing enabled)
2380 - To run the simulation with gdb, the simulator
2381 accepts --cfg=tracing/smpi:1 to trace SMPI
2382 - tesh files to check if smpi tracing is ok
2383 - See examples/smpi/NAS/DT-trace
2384 * GTNetS tracing re-worked
2385 - adaptation to the tracing system of GTNets to cope
2386 with modifications regarding the fullduplex mode
2387 - new tesh files to check if gtnets tracing is ok
2390 * Asynchronous communications through the functions:
2391 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
2392 * New function: MSG_load_platform_script()
2393 to make possible using a lua script instead of XML files to set up platforms
2394 * New function: MSG_set_function
2395 to associate functions to processes, used when bypassing the parser
2396 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
2398 Platforms: Add some more examples in examples/platforms
2399 * Grid'5000: see www.grid5000.fr
2400 * *_30000_hosts.xml: various huge files [mainly scalability testing]
2403 * Change the XML format. This is a very important modification. SimGrid
2404 3.5 introduces a new hierarchical format based on the notion of
2405 Autonomous Systems. Compatibility with old format is ensured
2406 through the perl script provided in the install bin directory
2407 bin/simgrid_update_xml.
2408 It is now possible to build platforms with specific routing
2409 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
2410 connect several platforms together. We will try to provide soon
2411 set of realistic platforms exploiting these properties (have a
2412 look at examples/platforms/ for the moment).
2413 * Take the opportunity of the XML format change to be a good XML citizen:
2414 rename link:ctn to link_ctn and similar changes (also dealt with by
2416 * Add a new routing scheme (rule-based) using regular expressions. It
2417 enables to have an extremely low memory footprint when the
2418 underlying routing is simple and can be compactly described. You
2419 need to have libpcre4-dev (perl regular expressions) installed if
2420 you want to use this routing scheme.
2421 * Revive the cluster TAG and allow to easily and efficiently (both in
2422 term of memory and speed) connect clusters together. Have a look
2423 at teshsuite/simdag/platforms/ to see how this can be done. With
2424 this tag, you can create clusters with thousands of tasks at no
2425 cost (have a look at examples/platforms/).
2426 Note: clusters are implemented as ASes, so there is no need for an
2427 enclosing AS tag if you have only one cluster in your platform.
2428 * Add new generic functions in the public interface that allows the user
2429 to call SURF 'create_resource' methods from your code (same
2430 functionality as the XML bypass mechanism but with a much lighter
2432 * Add a new model (enabled through command line --cfg=network/model:SMPI)
2433 that uses a piecewise linear approximation to produce better
2434 results when exchanging small messages.
2435 * Add a new parameter to handle correctly full duplex link and account
2436 for interferences between uplink and downlink communications
2437 (activate with --cfg=fullduplex:1).
2440 * Rename the SD_READY (all dependencies are satisfied and task is
2441 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
2442 dependencies are satisfied) state.
2443 This prevents a confusion between the notion of "ready to schedule"
2444 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
2445 simulated" (SD_RUNNABLE) used by the simulation kernel.
2446 * Change the way a task is considered as ready. Instead of removing
2447 dependencies when a task is done, a counter is decreased. This way,
2448 it is always possible to reach ancestors thanks to the
2449 SD_taks_get_parents function (even after the end of the simulation.)
2450 * Change the return type of SD_Simulate from (SD_task_t*) into
2451 xbt_dynar_t. This function was in handling a dynar internally and
2452 converted it into a NULL terminated array for historical reasons.
2453 * New function SD_dotload(char*) to load a DAG described in dot
2454 format. This loader and the corresponding examples require the
2455 installation of the graphviz library.
2456 * Fix a bug in the management of tasks of size 0 in the surf network
2457 models. This problem was only visible with SIMDAG and you should
2458 thus disregard results produced with earlier versions if you
2459 relied on this feature (some tasks were blocked because of this).
2460 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
2461 even though your applications were doing only point-to-point
2462 communications and sequential computations. Now you can really use any
2463 model you want (of course, if you create real parallel tasks, which are
2464 not implemented in most models beside ptaskL07, this will abort).
2465 * Add an example that schedules a DAX on an heterogeneous platform
2466 using a Min-Min strategy.
2467 * New function SD_workstation_get_current_task() that returns the kind
2468 of task currently running on a workstation in the sequential access
2470 * Raise some warnings when unexecuted tasks remains at the end of the
2471 simulation. This is usually caused by cycles in the DAG.
2474 * New function: SIMIX_process_set_function() called by MSG_set_function
2475 * Change the underlying waiting queue in semaphores so that a process
2476 can wait on several of them simultaneously (as in waitany).
2477 * Fix the way to handle tokens in semaphores so that all access patterns
2478 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
2479 * kill the dirty pimple SIMIX_message_sizes_output()
2480 Please use (proper) visualization instead
2483 * New data container: setset (set of sets of elements)
2484 * New module: mmalloc (mapped malloc, allowing to have several
2485 independent segments of malloc)
2486 * New function: xbt_dict_cursor_set_data()
2487 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
2488 * New function: xbt_dynar_is_empty()
2489 * New function: xbt_fifo_get_last_item()
2490 * Fix xbt_dynar_shrink(): use the right element size.
2491 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
2492 uninitialized areas during expand.
2493 * Fix semaphores: previous implementation was severely broken.
2494 * Use library init/fini functions for our initialization.
2495 - you can use logs and other feature as soon as you want in your
2496 code (even before the xbt_init / MSG_init)
2497 - xbt_exit is now a no-op and produce a warning when used.
2500 * Port GRAS to new SIMIX mechanisms. This allows gras users to
2501 benefit from the latest improvement to the simulation kernel.
2502 * Kill measurement sockets for now. If you rely on them, sorry. This
2503 release is not for you. This feature will be reintroduced in the
2504 future, but we cannot delay the release any further.
2505 * New function: gras_msgtype_get_name().
2506 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
2507 * Fix (at last) the pmm example: it should not randomly fail anymore.
2509 Build chain: bug fixes and overall polishing
2510 * Cmake is now stable enough. Hence, we killed the autotools.
2511 * Port to windows ( TM :)
2512 * Fix the 'make install' target.
2513 No need to use 'make install-simgrid' anymore
2514 * Introduce a 'make dist' target compiling a *source* archive
2515 'make package' compiles a binary archive
2516 * Compile java files only on need
2517 * Add --cd and --setenv command line options to tesh
2518 * Out of source builds are not fully supported yet, but we are close
2519 * Enable supernovae and optimization flags by default for our users
2522 * Add layer to set up environment directly from lua, without XML.
2523 * The effect of gras_stub_generator can be achieved through
2524 lua too (check examples/gras/console/ping_generator.lua)
2526 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
2528 SimGrid (3.4.1) stable; urgency=low
2530 The "Polishing easter eggs is probably a good idea" release.
2531 This is a bug fixes release only.
2535 * Fix a bug preventing the tasks from begin garbage collected.
2538 * Fix a bug occurring when a host involved in a communication fails.
2539 This was not detected properly by the other peer involved in the
2540 communication. Now, it's reported as a network error.
2543 * Warn the user about loop dependencies in data flow of DAX files
2544 * Obey the control-flow dependencies of DAX files
2547 * Add option "enable_smpi" allowing to not compile SMPI.
2548 Probably useful for the (Mac) users experiencing a build error here
2549 * Improve the detection of lua5.1 and ruby1.8
2551 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
2553 SimGrid (3.4) stable; urgency=low
2555 The "Easter in Cargese" release. Also known as (major changes):
2557 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
2558 ~> bindings were greatly improved
2559 ~> new tracing infrastructure for better visualization introduced
2561 * the "Welcome to configury modernity" release.
2562 ~> we switched from autotools to cmake, and improved our cdash
2565 A more detailled list of changes follow (full detail in svn log).
2567 Java Bindings: Various Cleanups
2568 * (install java-gcj-compat-dev on debian-like to use them)
2569 * Remove put/get: no need to export deprecated interface in Java
2570 Use send/receive instead.
2571 * Cleanup the examples and add a README per directory
2572 * Remove example autoDestination (that's the only way to go now)
2573 * Remove example explicitDestination (was a plain copy of basic)
2574 * Make JniException a runtime exception, so that there is no need to
2575 declare the fact that you may encounter such a beast. I guess that
2576 nobody will ever want to survive such error.
2577 * Create specific errors for each MSG case of failure:
2578 host failure, transfer failure, timeout, task cancelled
2579 * Cleanup the exceptions that may get thrown by each function
2580 * Other internal cleanups in Java bindings. Performance still bad :/
2581 Ruby and Lua Bindings: create them
2582 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
2583 * That's new and great, you should try them out.
2584 Same functionalities than Java bindings, only even less polished
2586 * Kill the useless "rate" argument of SD_task_get_execution_time()
2587 Everyone used to provide -1 as a value, it was not used, and the
2588 semantic of a possible use wasn't even clear.
2589 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
2590 either as comm costs or compute costs to mean that there is no
2591 such thing for that specific task.
2592 * Add a SD_task_set_name() function
2593 * Fix SD_task_unschedule() on typed tasks
2594 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
2595 * In DAX loader, accept useless 'level' attributes to <job> since
2596 LIGO DAGs have them (seem to be to ease graphical representation).
2598 * Add an example masterslave_mailbox.c using send/receive and not
2599 the deprecated put/get interface.
2600 * Kill the MSG_paje_output() function. It's a noop since 2 years.
2601 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
2603 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
2604 (declare MSG_USE_DEPRECATED to still have the old name)
2605 * Add a MSG_task_set_data() function
2606 * About trace replay (see examples/msg/actions):
2608 - Allow to work with splitted trace files for each process
2609 Give the specific trace file as argument of each process,
2610 and call MSG_action_trace_run(NULL)
2611 You can still have one merged file for all processes.
2612 - Fix implementation of collective operations
2613 * Allow task_execute() on 0-sized tasks (closes #10063)
2615 * This is the first release of SimGrid where SMPI is not considered
2616 beta anymore (even if some corners should still be improved)
2617 * Port over the new SIMIX_network submodule (internal refactoring)
2618 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
2619 * Implement more missing elements of the standard:
2621 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
2623 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
2624 MPI_Scan() MPI_Get_processor_name()
2625 - Added implementation of missing case for Alltoall (warning: it's
2626 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
2627 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
2628 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
2629 SMPI_MPI_Allgatherv()
2630 * Bug fixes include:
2631 - MPI_Waitsome() was broken
2632 - Allow relative includes in smpicc
2633 - Command line cfg argument 'reference_speed' was ignored...
2634 - Some functions did not properly lead to auto-benching of user code
2635 - smpicc passes -O2 by default (just like openmpi one)
2637 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
2638 * Bug fixes about timeouts during communications
2639 * add SIMIX_message_sizes_output() as a pimple to write to file the
2640 amount of messages per size. Use gnuplot to get histogram.
2641 Pimple because that's the only user-visible function of simix,
2642 defined directly in xbt.h (irk, sorry)
2644 - Add a SIMIX_sem_get_capacity() function
2645 - Fix interactions with processe resume/suspende
2646 - release_forever() was stupidly broken
2647 - Fix SIMIX_display_process_status() for processes in a semaphore
2648 - Make SIMIX_sem_block_onto() user-visible
2649 * Refactoring context stuff:
2650 - Use pseudo-OOP for better modularity
2651 - reimplement SIMIX_process_kill() without process_schedule() so
2652 that the latter can take as invariant that it is called from
2654 - Merge context_start into context_new for sake of simplicity
2656 * Add a Vivaldi network model, coded live during SUD'10 ;)
2657 * Rename configuration variables to start a hierarchy:
2658 o cpu_model -> cpu/model
2659 o network_model -> network/model
2660 o workstation_model -> workstation/model
2661 * New configuration variables:
2662 o network/bandwidth_factor: correction to bandwidth
2663 o network/latency_factor: correction to latency
2664 o netwotk/weight_S: correction to the weight of competing streams
2665 * Add a long description to the models, that users can see with such
2666 argument on the command line: --cfg=cpu/model:help
2667 * --help-models display the long description of all known models
2669 * config: add the ability to set a default value after registration
2670 Does not override any previously set value (e.g. from cmd line)
2671 * dict: allow to have integer key and data.
2672 When so, you need to use the following functions
2673 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
2674 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
2675 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
2676 In contrary to regular dicts, the key is not malloced before copy.
2677 Mixing scalar and regular elements in the same dict is not tested
2679 * Allow to use xbt_dynar_shrink() to expend the dynar instead
2680 Tracing for Visualization:
2681 * SimGrid is now instrumented in order to generate a trace file for
2682 visualization analysis: to use it, need to compile SimGrid with the
2683 "tracing" option enabled, and instrument the program using SimGrid with
2684 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
2685 (among other functions).
2686 * The instrumentation only traces the platform utilization for now
2687 * Documentation to use the tracing functions and how to analyze the
2688 traces with the Triva tool is written.
2689 * More information about: SimGrid FAQ (in the section Tracing Simulations
2692 * We moved to cmake as default build system. Autotools support will
2693 be dropped soon. Check the FAQ for more info about how to use it.
2694 * Greatly improved our cdash/ctest interactions
2695 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
2696 * Added memory checking tests with valgrind; lot of memleak fixing.
2697 This may be the first release of simgrid with so few memory issues
2698 * Added code coverage tests.
2699 Our coverage is still improvable, but at least we see it on cdash.
2701 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
2703 SimGrid (3.3.4) stable; urgency=low
2705 The "Desktop Grid needs love too" release (also called Xmas release).
2707 Models improvements:
2708 * Major speedup in the maxmin system solving by using lazy evaluation
2709 Instead of solving completely the maxmin system at each iteration,
2710 only invalidate (and recompute) the modified parts.
2711 This new feature is enabled in default models but you can try to
2712 turn it on with "--cfg:maxmin-selective-update=1" for other models.
2713 * Cas01 IMproved as default CPU model
2714 This CPU model is the same Cas01 model, but it uses the
2715 maxmin-selective-update flag and a heap structure to manage
2716 actions on SURF kernel.
2717 It reduces the complexity to find the next action to finish and,
2718 consequently, it's faster than the old Cas01.
2719 This is the new default CPU model (Cas01).
2720 * Rename the old Cas01 model to Cas01_fullupdate
2721 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
2722 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
2723 * CpuTI (CPU Trace Integration)
2724 A new CPU model whose objective is simulate faster when using
2725 availability trace files.
2726 Instead of using a full featured, over engineered maxmin system for
2727 CPU modeling, this model does the pre-integration of traces files
2728 to calculate the amount of CPU power available, and so, executes
2729 faster than the old CPU models.
2730 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
2731 * Use LV08 as default network model since it gives better accuracy
2732 for small messages and shouldn't change things for big ones.
2733 Use --cfg=network_model:CM02 to get the previous behavior.
2736 ******************************************
2737 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
2738 ******************************************
2739 * The new CPU model may changes simulations!
2740 The point is that events occurring at the exact same timestamp
2741 are not scheduled in the same order with the old and new
2742 version. This may be enough to completely change the execution
2743 of simulations in some cases.
2744 * The new network model will change simulations!
2745 This new model is more realistic than the previous one, so you
2746 should consider redoing your old experiments with this model.
2747 Sorry for the inconvenience.
2750 * Introduce the supernovae compilation mode
2751 When compiled that way, the whole SimGrid (or almost) is put in a
2752 single compilation unit and compiled in one shoot.
2753 This is to help gcc which has difficulties to inline stuff from one
2755 The speedup seem to be above 15%, althrough more tests are needed on
2756 amd64 to confirm that gain.
2759 * Port of MSG's mailbox on top of SIMIX network
2760 The put/get mechanism was greatly simplified on the way.
2763 * New SIMIX network module. Provides:
2764 - Mailbox: rendez-vous mechanism to find with who you want to speak
2765 - Synchronous send/recv: easier and hopefully faster since the
2766 logic is handled in the maestro process directly now
2767 - Asynchronous send/recv: you dreamt of it? It's here now
2768 Too bad that nobody cared enough to propagate the change to MSG.
2769 * Add semaphores as SIMIX synchronization mechanism.
2772 * new function SD_daxload(char*) to load a DAX file
2773 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
2774 * Introduce typed tasks. Specify its kind and cost at creation.
2775 At scheduling, just give where it should be placed, and the cost
2776 for each involved resource is automatically computed.
2777 Existing constructors so far (more to come of course):
2778 - SD_task_create_comm_e2e() for end-to-end communication
2779 - SD_task_create_comp_seq() for sequential computation
2780 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
2781 * new function SD_task_dump() for debugging display
2782 * new function SD_task_dotty(task,FILE*) writing to file the info
2783 about the task in dotty format
2784 * SD_task_dependency_exists() can now cope with having one of its
2785 arguments NULL. If so, it tests whether the other argument has any
2787 * Add getters on list of preceding/following tasks:
2788 SD_task_get_parents(task) and SD_task_get_children(task)
2789 * Add getters on amount of workstations and list:
2790 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
2791 * Add getter on task kind: SD_task_get_kind(task)
2792 * Update the start_time and finish_time of tasks on completion/failure
2793 * Bugfix: Remove task from state swags when destroyed
2796 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
2799 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
2800 dynar with one separate thread per value of the dynar.
2801 * Change the prototype of xbt_thread_create(), sorry.
2802 Added a boolean parameter indicating whether we want to join this
2803 thread (used in SG only for now)
2804 * Implement xbt_thread_join and xbt_thread_yield in SG also.
2807 * GTNetS wrappers should now be usable again (and betterly tested too)
2808 * Fix a major regression from 3.2 where the timeout provided to
2809 MSG_task_put_with_timeout() was used as absolute time before which
2810 the comm should be done.
2811 * Start to fix the <cluster> tag.
2812 - Internal links should be good now (beside of the loopback, which
2813 use the private link instead)
2814 - paths to the external world is still rather broken
2815 - the <route:multi> tag is just broken. Actually that's brain-dead.
2816 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
2817 to make it less stupid
2818 ** Check your platform with teshsuite/simdag/platforms/flatifier **
2819 * Fix a source-level compatibility glitch from 3.2: after defining
2820 MSG_USE_DEPRECATED, you can use the old name
2821 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
2822 * Allow to compile from the SVN with automake 1.11
2823 * Fix some problems when using the "start_time" tag in deployment XMLs.
2824 * Fix #8569: XBT/synchro.h has redundant declarations
2825 * Fix #8563: MSG return values and exceptions
2826 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
2827 * Integrate patch #8636: Obey DESTDIR when installing documentation.
2828 Thanks to Robson Peixoto.
2829 * Fix a vicious bug in dictionaries inducing that some elements were
2830 not freed on xbt_dict_free()
2832 Portability report of this version:
2833 * Main portability targets:
2834 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
2835 on (amd64/i386/ia64)
2836 - mac leopard on i386
2837 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
2838 but nothing critical.
2839 * Other platforms: windows, AIX and others were not tested for this release
2841 Timing report of this version:
2842 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
2843 scenario parameters). From 8h to a few seconds in desktop grid settings.
2844 * Supernovae brings about 25% speedup on i386.
2846 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
2848 SimGrid (3.3.3) stable; urgency=low
2850 The "Need for Speed" release.
2852 The timings done to validate the 3.3.2 were faulty.
2853 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
2855 The problem was a conversion from a manually handled vector to
2856 xbt_dynar_t on the critical path.
2857 xbt_dynar_foreach calls functions, inducing stack management crap.
2859 We inlined these functions and xbt_dynar_foreach is now breath taking.
2860 We also inlined xbt_swag_belong on the way.
2862 Here are some approximate speedup measurements (on master/slaves
2863 simulations lasting between 10s and 20s each):
2864 3.3.1 -> 3.3.2: about same performance
2865 3.3.2 -> 3.3.3: 40% speedup
2866 3.3.1 -> 3.3.3: 40% speedup
2867 3.3.1 with inline patch -> 3.3.3: 30% speedup
2869 Our reading is that the refactoring which occurred in 3.3.2 made us
2870 suffer much more from the xbt_dynar_foreach low performance, but
2871 once we solved this, this refactoring proved to be very performance
2872 effective. From the 40% speedup, somehow, 10% are due to the
2873 inlining and 30% to the refactoring.
2875 That's a pitty that gcc cannot inline functions placed in other files
2876 alone. We have to choose between:
2877 - break the encapsulation (by putting private data structures and
2878 accessors in headers files to help gcc)
2879 - live with low performance
2880 - switch to a decent compiler such as icc (not quite possible).
2882 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
2884 SimGrid (3.3.2) stable; urgency=low
2886 The "Simplicity does not preceed complexity, but follows it" release.
2888 The main contributors of this release were (lexical order):
2889 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
2892 * Extract the routing logic into its own object.
2893 (was dupplicated in network.c and workstation_LV07.c;
2894 Allows to implement other ways of storing that info)
2895 => kill now useless network_card concept
2896 - Use dynar to represent routes (instead of void** + int*)
2897 - kill link_set (use surf_network_model->resource_set instead)
2898 - Add a command-line option to choose the routing schema to use
2899 - Add three new models:
2900 * Floyd (shortest path computed at initialization)
2901 * Dijikstra (shortest path recomputed all the time)
2902 * Cached Dijikstra (shortest path computed on need)
2903 All these models where contributed by Silas De Munck, and are
2904 described in his ICCS09 paper.
2906 * Simplify model declaration
2907 (less redirections, less function to write when defining a model)
2908 - Factorize stuff between models:
2911 surf_model_resource_set(model)
2912 surf_model_resource_by_name(model, name)
2913 - Unify the types of models in s_surf_model_t (using an union)
2914 - Embeed fields of common_public directly into s_surf_model_t
2915 - Rename model methods:
2916 action_free ~> action_unref
2917 action_change_state ~> action_state_set
2918 action_get_state ~> action_state_get
2919 - Change model methods into functions:
2920 (model)->common_public->action_use ~> surf_action_ref
2922 * Implement a generic resource; use it as ancestor to specific ones
2923 (allows to kill duplicated code in models)
2924 Drawback: timer command don't need no name nor properties;
2925 workstation_CLM03 don't need no properties
2926 (but I guess we can live with those few bytes wasted)
2928 * Improve the action object model
2929 - implement a constructor avoiding dupplicated code about field
2930 initialization in generic_action part.
2932 * Kill the SDP model: it has an external dependency, is deprecated
2933 in flavor of modern lmm models, and didn't compile since a while
2936 * Relocation of the context module from XBT to SIMIX.
2937 (the context were decoupled from the simix processes, duplicating a lot of code)
2938 => a lot of code was factorized
2939 - less overhead is introduced during scheduling
2940 - simpler API for the context factory
2941 - the logic for process creation,destruction and manipulation was simplified
2942 * Simplification of the s_smx_process_t data structure.
2943 => accesing the simix level data associated to a process is faster now,
2944 and the code is a lot more readable.
2947 * Implement some more MPI primitives:
2948 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
2949 -implementation: Bcast: flat or 2-ary tree (default),
2950 Barrier: 4-ary tree,
2952 Allreduce: Reduce then Bcast
2953 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
2954 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
2955 Alltoallv: flat tree, like ompi
2957 * Add support for optimized collectives (Bcast is now binomial by default)
2958 * Port smpirun and smpicc to OS X
2961 * Kill SD_link_get_properties: hard to maintain and makes very little sense
2962 Shout out if you used it.
2965 * Display the list of still queued messages in SG mode when existing
2969 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
2970 * Add xbt_graph_node_get_outedges() [Silas De Munck]
2971 * Add xbt_str_from_file(FILE*)
2972 * Add xbt_dict_get_key achieving a linear reverse search
2973 * Remove the context module
2975 Portability report of this version:
2976 * Main portability targets:
2977 - Linux(debian)/x86/context
2978 - Linux(debian)/x86/pthreads
2979 - Linux(debian)/amd64/context
2980 - Linux(debian)/amd64/pthreads
2981 On these, we still have the eratic breakages of gras/pmm and
2982 amok/saturate_sg reported in previous version. We still think
2983 that the tests are the cause of the fault, not the tested code.
2985 - Mac OSX Leopard/x86/context
2986 Still false negative in tesh autotesting.
2987 Smpi still fails, but this time because readlink does not accept -f
2988 Everything seems to work properly beside of that.
2991 - AIX version 5.3 (only tested contexts this time)
2992 Smpi still fails there because mktemp is not installed.
2993 Everything seems to work properly beside of that.
2995 I managed to compile it for the first time, but several breakages.
2996 Won't delay the release for this exotic platform.
2998 * Windows: it's still lagging behind. If you want to help, please
3001 Timing report of this version:
3002 This version seem to be more than 5% faster than 3.3.1 (on linux
3003 64bits with contextes). The gain is less than expected, we are
3004 investigating this for next release.
3006 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
3008 SimGrid (3.3.1) stable; urgency=low
3011 * Implement a --cfg-help to show existing configuration variables
3012 * Build chain do not require doxygen in maintainer mode
3015 * fix a bug on struct sizeof computation, which prevented the
3016 exchange of arrays of structs in some conditions
3017 - added a regression test about this in datadesc_usage
3018 * Allow the exchange of 0-long dynamic vectors.
3019 - for that, use -1 as indicator of dynamic size instead of 0
3020 - This implied to change any size from unsigned long to long,
3021 reducing a bit communication abilities, but I guess that with
3022 64bits being quite common, this is more than enough.
3023 - This also induce a protocol change, thus bumping network protocol
3024 version from 0 to 1 (if we have external users, we have to get
3025 clean on that point too ;)
3026 - added two regression tests about this in datadesc_usage
3027 * Be more verbose when propagating local exceptions
3028 This helps debugging.
3029 * Display the status of simulated processes when receiving SIGINT in
3033 * Allow to control the simulation from a trace file.
3034 New functions MSG_action_register() and MSG_action_trace_run()
3035 The first one allows to associate a function execution to each
3036 kind of action while the second one parses a trace file and
3037 triggers the corresponding actions within the system.
3038 For now, only a toy example is provided in examples/msg/actions
3039 * Add an example of process migration in examples/msg/migration
3040 * Fix a bug in task exchange which broke MSG_task_get_sender()
3041 Add a teshsuite regression test for that.
3042 [Bug: if MSG_task_get_sender() is called after sender exit,
3044 * Fix a bug which prevented suspend/resume to work properly
3045 * Display the status of simulated processes when receiving SIGINT
3046 This fixes a regression of v3.3. due to the introduction of SIMIX
3047 * Bug fixing in failure management:
3048 - trace could not start by a failure at time 0
3049 - failure during communications were not working
3052 * Add SIMIX_process_set_name() to change the name of the current
3053 process in the log messages.
3054 * Store smx_hosts in a dict since we only retrieve them by name
3055 * Move the configuration infrastructure to surf
3058 * Move the configuration infrastructure to surf
3061 * Massive internal cleanups:
3062 - Store internal structures on processes instead of hosts (allows
3063 to have more than one process per host, in addition of being more
3065 - Cleanup the initialization/finalization process
3066 - Kill a whole bunch of unneeded synchronization:
3067 processes run in exclusive manner within the simulator
3068 - Move queues from global tables to process data fields
3070 - now accept -platform and -hostfile arguments
3071 - Pass the right rank value to processes according to the hostfile
3072 * Compile the examples by default, and use them as regression tests
3073 * Implement MPI_Wtime()
3074 * Change the reference speed to a command line option
3077 * TCP_gamma can now be specified as command line option using
3078 --cfg=TCP_gamma:10000000.0
3079 * Change the --surf-path cmd line option into --cfg=path:
3082 * Also include strbuff from xbt.h public header
3083 * xbt_ex_display(): do not free the exception after displaying
3084 This allows to do more with the given exception afterward.
3085 Users should call xbt_ex_free() themselves.
3089 Portability report of this version:
3090 * Main portability targets:
3091 - Linux(debian)/x86/context
3092 - Linux(debian)/x86/pthreads
3093 - Linux(debian)/amd64/context
3094 - Linux(debian)/amd64/pthreads
3095 These targets fail about 1/10 of times on gras/pmm, but we believe
3096 that this is because of the test, not because of simgrid.
3097 amok/saturate_sg fails even more rarely, and the test may not be
3100 - Mac OSX Leopard/x86/context
3101 The test suite still spits tons of errors because some obscure
3102 force prevents us from removing the temporary directories
3103 arguing that they still contain some metadata I've never heard of.
3104 Smpi fails because seq is not installed.
3105 Everything seems to work properly beside of that.
3108 - AIX version 5.3 (both contexts and pthread)
3109 Smpi still fails there because mktemp is not installed.
3110 XML inclusions seems rosty on AIX.
3112 * Windows: it's still lagging behind. If you want to help, please
3115 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
3117 SimGrid (3.3) stable; urgency=high
3121 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
3122 [Malek Cherier & Mt]
3124 * Introduce the SIMIX module: factorize code between MSG and GRAS.
3127 Until now, GRAS were using MSG as an interface to SURF. It was
3128 quite difficult because both interface have several differences
3129 (MSG channels vs GRAS sockets were the most notable point).
3131 This also opens the gate to SMPI (which should occur soon) and speed
3132 up simulations by to 40% (even if it were not the main goal).
3134 **************************************
3135 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
3136 **************************************
3137 The point is that events occurring at the exact same timestamp are
3138 not scheduled in the same order with the old and new version. This
3139 may be enough to completely change the execution of simulations in
3140 some cases. Sorry for the inconvenience.
3142 * Cleanup and upgrade the XML format to push further scalability
3143 issues (check http://hal.inria.fr/inria-00256883/ for more info)
3145 * Improve the testing infrastructure with tesh. Now a very large part of
3146 the code is tested not only by being run but also by checking that the
3147 output match an expected output [Mt].
3149 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
3150 is really less memory-demanding, which should allow you to use
3151 larger files in SimGrid [AL].
3153 * Inform valgrind about our contextes, so that it becomes usable
3154 with the default (and more effecient) version of SimGrid
3155 [contributed by Sékou Diakite, many thanks]
3158 * Introduce a listener thread in charge of receiving incoming
3159 messages from the network. It allows to overlap communication and
3160 computation but most notably, it removes some stupid deadlocks due
3161 to the fact that so far, a process could not send and receive at
3162 the same time. This made most non trivial communication schema
3164 * Convert the PIDs from long int to int to match the MSG ones (and
3165 linux ones too) [Mt]
3166 * New function: gras_agent_spawn() to launch a new process on
3167 current host. Only working in simulation for now. [Mt]
3168 * New function: gras_os_hostport() returning a constant form (ie,
3169 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
3172 * Make the backtrace of exceptions more human readable [Mt]
3173 * New module: xbt/str [Mt]
3174 a ton of string utility functions (split, join, printf to a newly
3175 allocated buffer, trim, etc)
3176 * New module: xbt/hash [Mt]
3177 SHA1 hashing algorithm (more to come if needed)
3178 * New module: xbt/synchro [Mt]
3179 synchronization tools (mutex and conditions) working the same way
3180 in simulation and in real life (mainly useful for GRAS, but not
3182 * New module: xbt/queue [Mt]
3183 classical producer/consumer synchronization scheme
3184 * xbt_dynar_new_sync() creates a synchronized dynar. All access
3185 (using the classical functions will get serialized) [Mt]
3186 * Make dictionary internal table dynamic. No need to specify its size
3187 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
3189 * Make sure the log channels are organized as a tree under windows
3190 (because of ANSI C compatibility issue, any channel were child of
3191 root directly) [Mt].
3194 * Cleaned many thing in surf and fixed a few bugs [AL].
3195 * Add a nice command line configuration mechanism to compose models [AL].
3196 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
3197 the previous one (KCCFLN05). It relies on something that looks like
3198 a max-min sharing mechanism but cannot be written as such. A new solver
3199 was thus designed [AL].
3200 * Add a new solver to lmm. Based on Lagrange optimization and
3201 gradient-based descent, it enables to efficiently maximise systems s.a
3203 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
3205 This solver enables to propose two new network models for TCP Reno and
3206 TCP Vegas based on Low's work. These models still need to be fully
3207 tested though [Pedro Velho].
3210 * Bug fix in SD_simulate. Now the time bound given as argument is
3212 * Use the new parallel task model (ptask_L07) as default.
3213 * Use the SURF command line configuration mechanism.
3214 * 0-size tasks (for synchronization) should now work.
3216 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
3218 SimGrid (3.2) stable; urgency=high
3222 We still experience issues on this platform, but we believe that at
3223 least MSG is usable.
3225 GRAS API BREAKAGE (for simplification purpose, sorry):
3226 * the gras_msgtype_by_name is not used anymore. Instead of
3227 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
3228 you can write (and must)
3229 gras_msg_send(toserver, "request", &request);
3230 - If you still want to pass a gras_msgtype_t to the function (to cache
3231 the type and avoid the lookup time), use the gras_msg_send_() variant.
3232 - Impacted functions:
3233 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
3234 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
3235 * The callbacks are now expected to return 0 when everything went well
3236 (just like the main() function)
3238 GRAS new features and improvements:
3239 * New module mechanism where user code can use per process globals [Mt]
3240 This is similar to gras_userdata_*() functions, but for libraries. It
3241 factorize some code developped over and over in the examples and AMOK.
3242 It has still to be documented and used (only amok/peermanagement is
3244 * Fix a vicious bug in the TCP buffering mechanism which leaded to message
3245 loss when they were small enough to fit into the buffer and sent quickly
3246 enough so that they can all get received in one shoot.
3247 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
3248 if not found. Use the *_or_null() variant for the old semantic.
3249 * In gras_msg_handle, do not discard messages without callback.
3250 They are probably messages to be explicitly awaited later (ie, proofs of
3251 mis-synchronization in userland since they are sent before being awaited)
3252 No big deal usually.
3253 * gras_socket_meas_send/recv: semantic changed!
3254 The numerical arguments used to be (1) the total amount of data to send
3255 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
3256 messages. This was need for the fool willing to send more than MAXINT
3257 bytes on quite fat pipes.
3260 * Do really rename the hostmanagement module to peermanagement. [Mt]
3261 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
3262 but this is rather new and this was documented in the module
3263 documentation (poor excuses, I admit)
3264 * Bandwidth measurement semantic changed! This follows the changes to
3265 gras_socket_meas_send/recv explained above.
3268 * A sequential mode has been added to the workstations. When a workstation
3269 is in sequential mode, it can execute only one task, and the other tasks
3270 are waiting in a FIFO. [Christophe Thiery]
3273 * The KCCFLN05 workstation model now handles parallel tasks. It is the
3274 model for SIMDAG. [Christophe Thiery]
3275 * Bug fix in the maxmin solver: Some values were close to 0 instead of
3276 equal to 0, which caused some bad behaviors in
3277 saturated_constraint_set_update. I now use a threshold mechanism like in
3281 * When running manually src/testall, you select specific units [Mt]
3282 testall is the result of our cunit mechanism, and should replace all
3283 the scripty thingy around since bash don't run easily on billware.
3285 * A mallocator system has been added. [Christophe Thiery]
3286 Mallocators allow you to recycle your unused objects instead of freeing them
3287 and allocating new ones.
3289 Documentation update:
3290 * FAQ reworking + New FAQs:
3291 - "Valgrind spits tons of errors!" [Mt]
3292 - "How to repport bugs" [Mt]
3293 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
3294 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
3295 - Communication time measurement within MSG [AL]
3296 - I experience weird communication times when I change the latency [AL]
3297 * GRAS tutorial [Mt]
3299 - an introduction to the framework and to the used communication model
3300 - an initiatic tour introducing the most proheminent features:
3302 . Lesson 0: Installing GRAS
3303 . Lesson 1: Setting up your own project
3304 o Part 2: Message passing
3305 . Lesson 2: Exchanging simple messages
3306 . Lesson 3: Passing arguments to the processes (in SG)
3307 . Lesson 4: Attaching callbacks to messages
3308 . Lesson 5: Using globals in processes
3309 . Lesson 6: Logging information properly
3310 . Lesson 7: Using internal timers
3311 . Lesson 8: Handling errors through exceptions
3312 . Lesson 9: Exchanging simple data
3313 . Lesson 10: Remote Procedure Calling (RPC)
3314 . Lesson 11: Explicitly waiting for messages
3315 . Recapping of message passing features in GRAS
3316 - A HOWTO section containing:
3317 o HOWTO design a GRAS application
3318 More are due, of course. They will come latter. In the meanwhile, you can
3319 check the examples which are still here.
3321 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
3323 SimGrid (3.1) stable; urgency=high
3327 There was a stack corruption somewhere, visible only when optimizing
3328 with these versions. [Vince]
3331 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
3332 module that enabled to play with Directed Acyclic Graphs. It is built
3333 directly on top of SURF and provides an API rather close to the old
3334 SG. Some old codes using SG are currently under rewrite to check that
3335 all needful functions are provided. [Christophe Thiery]
3338 * Complete rewrite of the KCCFLN05 workstation model. It is now an
3339 extension of the classical CLM03 model that gracefully handles
3340 failures. This is now the default model for MSG and GRAS. It doesn't
3341 handle parallel tasks yet though. [AL]
3342 * Bug fix: Weights were not correctly set in the network part.
3343 WARNING: This may have resulted in incorrect results with simulations
3344 where there are more than one flow on a given link. [AL]
3347 * After a (long ?) discussion on simgrid-devel, we have decided that the
3348 convention we had on units was stupid. That is why it has been decided
3349 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
3350 WARNING: This means that all previous platform files will not work as
3351 such with this version! A warning is issued to ask users to update
3353 A conversion script can be found in the contrib module of the CVS, under
3354 the name contrib/platform_generation/surfxml_update.pl [MQ]
3357 * Bug fix: Processes were started in reverse order, wrt deployment file.
3358 WARNING: if your code relies on this bug, please fix it. [AL]
3359 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
3360 being executed on two different locations. [AL]
3361 * Bug fix: Failures are now better supported thanks to Derrick's tests
3362 (there was many failure situations I hadn't thought of and that weren't
3363 correctly handled). [AL]
3364 * New function: MSG_host_is_avail indicates you whether a given m_host_t
3368 * New! a real RPC mechanism, as it ought to be since too long. [MQ]
3369 Exception occurring on server-side are propagated back to client (!).
3371 API CHANGE: the callback changed their prototype. Change:
3372 int my_handler(gras_socket_t expeditor, void *payload_data) {
3374 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
3375 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
3377 * New! function: gras_msg_handleall to deal with all messages arriving
3378 within a given period.
3379 * New! function: gras_socket_server_range to get a server socket in a
3380 range of port numbers (ease to avoid port number conflicts) [MQ]
3381 * New! gras processes display their backtrace when they get a SIGUSR1
3382 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
3383 Sweet to debug RL processes [MQ]
3387 - Do not force experiment sizes to be expressed in kb, or it becomes
3388 impossible to measure the latency this way (needs one byte-long tests)
3389 WARNING: this changes the amok_bw_* function semantic. [MQ]
3390 - Implements the link saturation stuff. [MQ]
3391 * Peer management module:
3392 New! module factorizing code that we wrote over and over [MQ].
3395 * New module: cunit (my jUnit implementation in ansi C) [MQ]
3396 - Test units are placed directly into the library code, they get extracted
3397 automatically and placed into the src/testall binary.
3398 - Convert most of the XBT tests to this system.
3399 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
3400 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
3401 live in the same C code. This required to change a little bit the API
3402 of surfxml parsing but shouldn't be an issue for end-users. [AL]
3403 * New module: sparse graph structure with basic algorithms (this is work
3404 in progress and the API is not considered to be frozen yet). [AL]
3405 * Display more information on backtraces: source line & function names are
3406 now displayed just like valgrind does (rely on addr2line tool) [MQ]
3407 * New function: xbt_backtrace_display(). Sweet while debugging [MQ]
3408 * Reworked a little bit some #include statements to load only required
3409 headers. Some user code that relied on SimGrid to include stdlib or
3410 stdio may need to include it by themselves. [AL]
3411 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
3413 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
3414 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
3415 but I guess that almost nobody used those parts. [MQ]
3417 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
3419 SimGrid (3.0.1) stable; urgency=low
3422 * Unfortunately, I had missed 5 misnamed functions:
3423 xbt_fifo_item_t xbt_fifo_newitem(void);
3424 void xbt_fifo_freeitem(xbt_fifo_item_t);
3425 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
3426 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
3427 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
3428 They're now deprecated. Please use their new versions:
3429 xbt_fifo_item_t xbt_fifo_new_item(void);
3430 void xbt_fifo_free_item(xbt_fifo_item_t);
3431 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
3432 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
3433 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
3435 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
3436 * Documentation: xbt_log module unmercifully reworked [MQ]
3437 * Bugfix: there was a problem with the ending of contexts with
3438 the pthread backend. It caused some weird deadlock or behavior
3439 depending on the pthread implementation. [AL]
3440 * Bugfix: get the exceptions raised in the simulator repport where
3441 and why they come from when they are not caught in time [AL, MQ]
3444 * Bugfix: Do repport the error when two non-connected hosts try to
3445 exchange data (Thanks to Flavien for stumbling into this one) [AL]
3448 * Add additionnal checkings on communications. Assert that two
3449 communicating hosts are connected by a set of links... [AL]
3452 * Add additionnal checkings on channel values in communication [AL]
3453 * New: MSG_task_get_source to see on which host a task was generated [HC]
3454 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
3455 the number of tasks waiting to be received on channel and sent
3457 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
3458 waits for the first task coming from a given host.. [AL]
3460 GRAS new functionnalities: [MQ]
3461 * Enhance the parsing macro to allow the size of multidimentional objects
3462 to be given thru annotations.
3463 * New example (and documentation): Matrix Multiplication a la RPC
3464 (as when I was young!) and fix a bunch of bugs found on the way.
3466 GRAS performance improvements: [MQ]
3468 * Reduce the amount of cbps creation/destruction by making it static to
3469 datadesc_send/recv() and using a (newly created) cbps_reset (based on
3472 * Change libdata to a set so that we can search for stuff by ID (and thus
3473 reduce the insane amount of dict lookups)
3476 * Actually implement gras_datadesc_copy() so that we don't have to mimick
3477 RL communication on top of SG since it's so uneffective.
3478 It may also be used for inter-thread communication in RL, one day.
3479 * Use gras_datadesc_copy() to exchange messages on top of SG
3481 - improve message exchange performance on top of SG
3482 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
3483 * Don't exchange on the network the size of the used part of buffer,
3484 instead, specify the possible buffer size to read().
3486 - reduces the amount of read/write calls (one pair per exchange)
3487 - reduces the amount of exchanged data (the size)
3488 - allows to retrieve all arrived data on receiver side, if we don't need
3489 it right now (subsequent read will peek the buffer)
3490 - allows the receiver to proceed with the beginning of the stream before
3491 everything is arrived
3492 - make it possible to build an iov transport (using readv/writev)
3494 - take care of the data with non-stable storage (like stacked data),
3496 * If possible, TCP send uses vector I/O (when writev() is here)
3497 - Don't use it for receive since we send data sizes and data on the
3498 same stream, so we wouldn't be able to chain large amount of chunks
3499 before having to flush the stuff to read the size.
3500 * Rework the transport plugin mechanism to simplify it and reduce the
3501 amount of pointer dereferencement when searching for the right function
3504 * I guess that now, we do almost as few system calls as possible while
3505 doing as few data copy as possible.
3507 To improve it further, we could try to send all the sizes first and then
3508 all the data (to use iov on receiving size), but it's only a partial
3509 solution: when you have 2 dimensional data, the sizes of the second
3510 dimension is data of the first dimension, so you need 3 streams.
3512 I'm not sure the potential performance gains justify the coding burden.
3514 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
3516 SimGrid (3.00) stable; urgency=high
3519 * New! Give the possibility to hijack the surf parser and thus bypass
3520 MSG_create_environment and MSG_launch_application. Have a look at
3521 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
3523 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
3525 SimGrid (2.96) unstable; urgency=low
3530 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
3531 This deprecates the xbt_error_t mechanisms.
3532 It modifies (simplifies) all XBT and GRAS API.
3533 MSG API keeps unchanged (exceptions raised by XBT are caught from
3534 within MSG and masked with existing error handling facilities)
3537 * New! Add a FATPIPE model. [AL]
3538 * New! Add a parallel task model. [AL]
3539 * New! Add automatically a loopback interface (in the default
3540 network model) if none was precised.
3543 * Bugfix: MSG_process_resume now works with the current running process.
3545 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
3546 * Modification of MSG_task_get_compute_duration. Once a task has been
3547 processed, the value returned by this function is now equal to 0. [AL]
3548 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
3549 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
3550 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
3551 of a m_task. For now, MSG_task_cancel only works with computation
3553 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
3554 of the processor (in Mflop/s) regardless of the current load on the
3556 * API Change: use proper naming convention for MSG_getClock and
3557 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
3559 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
3560 This function changes the priority of a computation task. This priority
3561 doesn't affect the transfer rate. A priority of 2 will make a task
3562 receive two times more cpu power than the other ones. This function
3563 has been added to suit the needs of Nguyen The Loc and hasn't been that
3564 much tested yet. So if it fails, please report it and send me your code.
3566 * API Change: removed all functions and types that were marked "deprecated"
3567 since many months. Renamed MSG_global_init_args to MSG_global_init.
3569 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
3571 SimGrid (2.95) unstable; urgency=low
3574 * Steal some nice code to GNU pth to fix context detection and usage [AL]
3575 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
3576 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
3579 * Bugfix: Allow absolute paths for platform description files [MQ]
3580 * Bugfix: do free the variables after use. Leads to drastic performance
3582 * Implement max_duration (ie, timeouts) on resources [AL]
3585 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
3587 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
3588 the needed support (timeouts) [AL]
3591 * Implement measurement sockets. You can now get the bandwidth between two
3592 hosts thanks to AMOK (see below). [MQ]
3593 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
3594 dynar over the network (yeah) [MQ]
3595 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
3596 * simple/static token-ring example. [Alexandre Colucci and MQ]
3597 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
3598 in place before [MQ]
3601 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
3602 type parsing. "short" and "long" modifiers were also ignored; other
3603 modifier (such as reference level) are still ignored. [MQ]
3604 * Embeed the buffer size within the buffer itself on SG. [MQ]
3605 That way, send() are atomic and cannot get intermixed anymore (at least
3606 the ones which are less than 100k; bigger messages still have the issue)
3607 * Array size pushed by the field, not by the field type (or each
3608 and every long int will push stuff to the cbps) [MQ]
3609 * use select() to sleep since it allows to portably sleep less than one
3612 GRAS (minor cleanups)
3613 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
3616 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
3617 * type category 'ignored' killed as it was never used and were difficult
3619 * whether a type can cycle or not is now a flag, leaving room for more
3620 flags (as "ignored", if we feel the need one day ;)
3621 * Rename raw sockets to measurement sockets since "raw" has another
3622 meaning in networking community.
3625 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
3626 and offers features not belonging to GRAS but that most applications
3627 need. One day, it may be a set of plugins loadable at runtime.
3628 * New module: bandwidth
3629 bandwidth measurement between arbitrary nodes running this module. [MQ]
3631 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
3633 SimGrid (2.94) unstable; urgency=low
3635 The first beta release of SimGrid 3 !
3639 * Update the main page and the FAQ. Adding references to gforge.
3642 * Add a gras_os_getpid function.
3645 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
3646 * Extend the logs so that they also print PID, hostname, date, ... if
3648 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
3649 and kill the old version which were in testsuite/
3650 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
3654 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
3655 for users. Instead, each programming environment (GRAS, MSG,...) use it
3656 when needed to provide such a feature to users.
3657 Don't shortcut the mechanism or you will also shortcut the virtualization
3658 you need on the simulator.
3662 * Cleanups in configury with regard to compile optimization/warning flags.
3663 Also add -fno-loop-optimize to any powerpc since it's the optimization
3664 killing gcc (< 3.4.0).
3665 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
3666 needed by MSG examples complications
3667 * Borrow configury beautifications from PHP
3670 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
3671 warning (thanks loris for stumbling into this one).
3672 * Bugfix: stop loading private headers (gras_config.h) from the public
3676 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
3677 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
3678 RL would imply a DNS resolver, which is *hard* to do in a portable way
3679 (and therefore delayed).
3680 * Implement a real timer mechanism and use it in timing macros. This allows
3681 to avoid rounding errors and get a 0.000005 sec precision in timing
3682 macros. While I was at it, various cleanups:
3683 - allow to declare more than one timed section per file (fix a stupid bug)
3684 - move some private declaration to the right place
3685 - merge conditional execution and timing macros into emulation module
3686 - document the module
3687 - make sure the module cleanups its mess on gras_exit
3688 * Documentation improvements:
3689 - (new) how to compile applications using GRAS
3690 - (new) emulation support (timing macros)
3692 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
3694 SimGrid (2.93) unstable; urgency=low
3696 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
3699 - Use Paje properly where used. Still to be sanitized properly.
3700 - Portability fix: Add an implementation of the contexts using pthread
3704 - Add xbt_procname(): returns the name of the current process.
3705 Use it to show the current process's name in all logging.
3707 - fix detection of older flex version and the reaction, since we do
3708 depend on modern ones (we use lex_destroy)
3709 - Better separation of SG and RL in the libs: remove all simulation code
3710 from libgras. As a result, this lib is now only 200k when stripped.
3711 Some of the xbt modules may also be duplicated (two sets and such) and
3712 should be cleaned/killed before SG3.
3713 - Insist on using xlC on AIX because of weird problems involving gcc there.
3714 - Cleanup the make remote stuff. This is now done by scripts
3715 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
3716 mainly for our private use, but we're working on changing them to user
3719 - Bugfix: flush the socket on close only if there is some *output*.
3720 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
3722 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
3725 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
3727 SimGrid (2.92) unstable; urgency=low
3729 Alpha 3 on the path to SimGrid 3
3733 - New! First try of benchmarking macros.
3734 - New! First try so that gras_stub_generator generate deployment and
3735 remote compilation helpers.
3737 - Bugfix: Initialization fix in msg_test.
3741 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
3743 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
3745 - API Change: gras_os_sleep to take the amount of seconds as a double.
3746 Accepting an int was error prone since it was the only location where
3747 seconds were coded as such. It leaded to damn rounding errors.
3748 - Bugfix: Hard to belive that timers ever worked before this.
3750 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
3752 SimGrid (2.91) unstable; urgency=low
3754 Alpha 2 on the path to SimGrid 3
3758 - Bug fix in the lmm_solver.
3760 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
3761 through the function MSG_paje_output.
3762 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
3763 - It is possible to bound the rate of a communication in MSG with
3764 MSG_task_put_bounded() (was already in the previous version but I had forgotten
3765 to write it in the changelog).
3766 - Bug fix to let GRAS run on top of MSG until we move it directly on top
3771 - Various cleanups to the autotools stuff
3772 - Begin to move Gras examples to examples/gras/
3773 - Let make distcheck work again (yeah!)
3775 - documentation overhauled using doxygen.
3776 gtk-doc-tools is dead in SimGrid now.
3777 - Automatically extract all existing logging categories, and add the list
3778 to the documentation (long standing one, to say the less)
3780 - Cleanup the known architecture table. Reorder the entries to group what
3781 should be, and use a more consistent naming scheme.
3782 (some of the test dataset are still to be regenerated)
3783 - New! Allow library to register globals on each process just as userdata
3785 This is implemented using a xbt_dict and not a xbt_set, so we loose the
3786 lookup time (for now).
3787 Use it in msg and trp.
3788 This cleans a lot the internals and helps enforcing privacy of the
3789 headers between the gras components.
3790 - New! Add a timer mechanism, not unlike cron(8) and at(1).
3791 - Bugfix: gras_os_time was delirious in RL.
3792 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
3794 - Reenable GRAS now that it works.
3796 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
3798 SimGrid (2.90) unstable; urgency=low
3800 Alpha 1 on the path to SimGrid 3
3802 * It is a long time since the last release of SimGrid. I'm sorry about
3803 that but as I had told you, I was rewriting a lot of things. I apologize
3804 to those who had been reporting bugs to me and that I had not answered.
3805 If your bug is still in the new version, please tell me. Here is a
3806 summary of the main changes.
3808 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
3809 lead by Martin Quinson. As a consequence SimGrid gains a lot in
3810 portability, speed, and a lot more but you'll figure it out later.
3811 SimGrid now comprises 3 different projects: MSG, GRAS and SMPI.
3812 I wanted to release the new MSG as soon as possible and I have
3813 broken GRAS, which is the reason why, for now, only MSG is fully
3814 functional. A laconic description of these projects is available
3815 in the documentation.
3817 * REVOLUTION 2: I have removed SG and I am now using a new simulation
3818 kernel optimized for our needs (called SURF but only the developers
3819 should use it). Hence, MSG is now roughly 30 times faster and I think
3820 that by rewriting a little bit MSG, I could event speed it up a little
3821 bit more. Beside the gain in speed, it is also much easier to encode a
3822 new platform model with SURF than it was with SG. More to come...
3824 * REVOLUTION 3: I have tried to change a little as possible the API of
3825 MSG but a few things really had to disappear. The main differences
3826 with the previous version are:
3827 1) no more m_links_t and the corresponding functions. Platforms are
3828 directly read from an XML description and cannot be hard-coded
3829 anymore. The same format is used for application deployment
3830 description. The new format is described in the documentation.
3831 Have a look in tools/platform_generation. There is a tiny script
3832 that converts from the old platform format to the new one. Concerning
3833 the application deployment format, parsing the old one is tricky.
3834 I think most of you should however be able to convert your files. If
3835 it is really an issue, I can write a C code that does the conversion.
3837 2) the toolbox tbx does not exist anymore. We now have a library
3838 with much more data-structures but without the hash-tables (we have
3839 dictionaries that are much faster).
3841 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
3843 *****************************************************************************
3844 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
3845 * don't feel like converting the oldies. (Mt) *
3846 *****************************************************************************
3849 Version 2.90: "the long awaited one"
3850 - Finished rewriting and debugging MSG. Rewrote the documentation.
3851 - disable GRAS for now since it needs to be ported to the newest SG
3854 - Finish the port to windows (using mingw32 for cross-compile)
3857 - Main loop and datastructures of SURF. A cpu resource object is
3858 functional. Surf can thus be used to create cpu's with variable
3859 performance on which you can execute some actions.
3861 2004-11-15 Martin Quinson
3862 - Port to ARM. Simply added the alignment and size descriptions. Should
3863 work, but the ARM machines are so slow that I didn't had the opportunity
3864 to 'make check' over there yet.
3866 2004-11-15 Arnaud Legrand
3867 - Trace manager now written. It uses a heap structure and is therefore
3868 expected to be efficient. It may however be speeded up (particularly
3869 when many events occur at the same date) by using red and black
3870 trees. One day maybe...
3871 - Max-min linear system solver written. It uses a sparse matrix
3872 structure taking advantage of its expected use. Most operations are
3873 O(1) and free/calloc are called as few as possible. The computation of
3874 the minimum could however be improved by using a red and black tree
3877 2004-11-03 Arnaud Legrand
3878 - Rename every gras_* function that was in xbt/ to its xbt_
3880 - Add a heap and a doubly-linked list to xbt
3881 - Added a dichotomy to the dictionaries. make check works as well before
3882 so I assume that the patch is correct. I do not know however if things
3883 run effectively faster than before now. :)
3885 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
3886 SimGrid, and the version number is bumped to 2.x
3888 2004-10-29 Martin Quinson
3889 - Introduction of the remote errors.
3890 They are the result of a RMI/RPC on the remote machine.
3891 ErrCodes being scalar values, you can't get the host on which those
3892 errors did happen. Extending the error mechanism as in Gnome is possible.
3893 No idea yet whether it is a good idea.
3895 2004-10-28 Martin Quinson
3896 - Interface revolution: the Starred Structure Eradication.
3897 I used to do typedef struct {} toto_t; and then handle *toto_t.
3898 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
3899 - ???_t is a valid type (builded with typedef)
3900 - s_toto_t is a structure (access to fields with .)
3901 - s_toto is a structure needing 'struct' keyword to be used
3902 - e_toto_t is an enum
3903 - toto_t is an 'object' (struct*)
3905 typedef struct s_toto {} s_toto_t, *toto_t;
3906 typedef enum {} e_toto_t;
3907 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
3908 s_toto_t) is private.
3910 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
3911 so that it can set the variable to NULL. It was so for dicts and sets,
3912 it changed for dynars.
3914 - Fix a bunch of memleaks in dict_remove
3915 - Fix a bug in sg/server_socket opening: it failed all the time.
3917 2004-10-07 Martin Quinson
3918 - Speed up dynar lookup operation a bit.
3920 gras_dynar_get is dead.
3922 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
3923 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
3924 (which gives you the address of the stored data).
3926 gras_dynar_get_as is an helpful macro which allows you to retrieve a
3927 copy of the data using an affectation to do the job and not a memcpy.
3929 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
3930 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
3932 It does not really speedup the dynar test because they are
3933 setting elements all the time (and look them seldom). But the dict does
3934 far more lookup than setting.
3936 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
3938 2004-10-05 Martin Quinson
3939 - Allow to (en/dis)able the cycle detection at run time.
3941 Whether we should check for cycle or not is now a property of each
3942 datatype. When you think there may be some cycle, use datadesc_cycle_set.
3943 datadesc_cycle_unset allow to remove this property when previously set.
3945 Note that the cycle detection is off by default since it impacts the
3946 performance. Watch the data you feed GRAS with ;)
3948 This property is hereditary. Any element embedded in a structure having it
3949 set have it set for the time of this data exchange.
3951 You should set it both on sender and receiver side. If you don't set it on
3952 sender side, it will enter an endless loop. If you forget on receiver
3953 side, the cycles won't be recreated after communication.
3955 - Header reorganization.
3956 Kill gras_private.h, each submodule must load the headers it needs.
3958 2004-10-04 Martin Quinson
3959 - Interface revolution: do not try to survive to malloc failure.
3961 Now, gras_malloc and friends call gras_abort() on failure.
3962 As a conclusion, malloc_error is not a valid error anymore, and all
3963 functions for which it was the only gras_error_t return value are
3964 changed. They now return void, or there result directly.
3965 This simplify the API a lot.
3967 2004-09-29 Martin Quinson
3968 - Re-enable raw sockets.
3969 Created by gras_socket_{client,server}_ext;
3970 Used with gras_raw_{send,recv}
3973 It should allow to kill the last bits of gras first version soon.
3975 This is not completely satisfactory yet (duplicate code with
3976 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
3979 - Simplify transport plugin (internal) interface by not passing any
3980 argument to _server and _client, but embedding them in the socket
3983 2004-09-28 Martin Quinson
3984 - Finish the port to AIX.
3985 autoconf was my problem (segfault within the malloc replacement
3986 function. No idea why)
3988 2004-09-16 Martin Quinson
3989 - Fix some size_t madness on 64bit architectures.
3991 2004-09-08 Martin Quinson
3992 - Reduce the number of system headers loaded, overload some more system
3993 calls (such as malloc to cast the result of the system one, and work
3995 - Fix and reintroduce the config support
3997 2004-09-07 Martin Quinson
3998 - Source code reorganization to allow Arnaud to surf all over there.
3999 - Allow to document the logging categories.
4000 - Remove all uppercase from logging categories and useless cleanup in names.
4002 2004-08-18 Martin Quinson
4003 Version 0.6.2 (protocol not changed; API changed)
4004 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
4005 gras_error_t), and NULL when not found. Functions expecting a msgtype
4006 as argument (msg_wait; msg_send) deal with NULL argument by providing a
4007 hopefully usefull message.
4008 - Portability to prehistoric sparcs again
4010 2004-08-17 Martin Quinson
4011 Version 0.6.1 (protocol not changed; ABI not changed)
4012 - prealloc some buffers to speed things up
4014 2004-08-11 Martin Quinson
4015 Version 0.6 (protocol not changed; ABI expended)
4016 - The parsing macro can deal with the references, provided that you add
4017 the relevant annotations (using GRAS_ANNOTE(size,field_name))
4019 2004-08-09 Martin Quinson
4020 Version 0.5 (protocol not changed; ABI changed)
4021 - Allow to off turn the cycle detection code in data exchange at
4022 compilation time. It should be at run time, but I'm short of time (and
4023 the config stuff is still broken). That way, we keep dict out of the
4024 critical path, which is good because the performance is poor:
4025 - search not dichotomial yet
4026 - dynar give no way to access their content and memcpy everytime
4027 - In composed data description (struct, ref and so on), stop foolness of
4028 keeping the subtype's ID, but store the type itself. This keeps sets out
4029 of the critical path, which is good since they rely on dynar and
4030 dictionaries. The only loose of that is that we cannot detect the
4031 redeclaration of a structure/union with another content (but I'm not sure
4032 the code detected well this error before anyway). We still can detect
4033 the redefinition discrepancy for the other types.
4034 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
4035 it breaks the code because of type-punning used all over the place).
4036 This breaks on all non-gcc architectures (for now).
4038 All those changes (plus the buffer of last time) allow me to gain 2 order
4039 of magnitude on cruel tests consisting of 800000 array of integers on two
4040 level of a hierarchical structure (200 secondes -> 4 secondes)
4043 - the selector of reference must now return the type it points to, not
4044 the ID of this type.
4046 2004-08-06 Martin Quinson
4047 Version 0.4 (protocol changed; ABI not changed)
4048 - Allow to pass --gras-log argument to processes in simulation mode. Really.
4049 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
4050 - Implement a buffer transport, and use it by default (it relies on tcp in
4051 real life and on sg in simulation).
4052 That's a bit hackish since I had a new field to the structure to store
4053 its data without interfering with the subtype ones. Inheritance
4054 is tricky in C. And that's a kind of reverse inheritance with one class
4055 derivating two classes. Or maybe a game with java interfaces. Anyway,
4056 that's damn hard in C (at least).
4057 Moreover, I got tired while trying to ensure plugin separation and
4058 genericity in SG mode. MSG wants me to do weird things, so let's go for
4059 cruel hacks (temporarily of course ;).
4060 See comment in transport_private.h:71
4061 - do not include all the _interface headers in private but in the files
4062 which really need them (to cut the compilation time when they are
4065 2004-07-26 Martin Quinson
4066 Version 0.3 (protocol not changed; ABI changed)
4067 - Major overhault of the datadesc interface to simplify it:
4068 - shorted the function names:
4069 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
4070 - add a trivial way to push/pop integers into the cbps without malloc.
4071 This allows to make really generic sub_type description, which simply
4072 pop their size of the stack.
4073 - add a function gras_datadesc_ref_pop_arr() which does what users want
4074 most of the time: Declare a dynamic array (which pops its size of the
4075 stack) and declare a reference to it. Poor name, but anyway.
4076 - kill the post-send callback, add a post-receive one
4078 2004-07-23 Martin Quinson
4079 Version 0.2 (protocol changed; ABI changed)
4080 - add some testing for cpbs in the test cases, and fix some more bugs.
4081 This invalidate again the little64 data file, since I cannot regenerate
4083 - remove an awfull optimization in the logging stuff, allowing me to:
4084 - understand it again
4085 - learn gcc how to check that the argument match the provided format
4086 - fix all errors revealed by gcc after that
4087 - internal keys of dict are not \0 terminated. Deal with it properly in
4088 loggings instead of segfaulting when the user want to see the logs :-/
4090 2004-07-22 Martin Quinson
4091 - Fix some stupid bug preventing cbps (callback postit) from working
4093 2004-07-21 Martin Quinson
4094 - Some documentation cleanups
4095 - remove the useless last argument of msgtype_declare
4096 - rename the Virtu functions to fit into the 'os' namespace
4097 - move headers src/include -> src/include/gras/ and stop fooling with
4098 gras -> . symbolic link
4099 - make distcheck is now successful
4101 2004-07-19 Martin Quinson
4103 - Build shared library also
4104 - Install html doc to the right location
4105 - stop removing maintainer files in make clean
4106 - build tests only on make check
4108 2004-07-13 Martin Quinson
4110 - No major issue in previous version => change versioning schema
4111 - Re-enable little64 convertion test now that Abdou kindly regenerated the
4112 corresponding dataset.
4114 2004-07-11 Martin Quinson
4116 - Get it working with any kind of structure (we can compute the padding
4117 bytes remotely for all the architectures I have access to)
4118 - Implement the structure parsing macro (still not quite robust/complete)
4119 - Improvement to the remote testing toysuite
4121 2004-07-10 Martin Quinson
4122 [autoconf mechanism]
4123 - get ride of a bunch of deprecated macros
4124 - actually run the test for two-compliment, not only compile it :-/
4125 - test whether the structures get packed (and bail out if yes. Damn.
4126 Alignment is a serious matter)
4127 - test whether the structures get compacted (but respecting the alignment
4128 constraints of each types)
4129 - test whether the array fields of structures can straddle alignment boundaries
4131 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
4132 (took me 2 hours to find that bug, looking at the wrong place)
4133 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
4134 before sending/receiving and are used to compute the offsets of fields
4135 - Given that padding size depend even on compiler options, keep track of
4136 alignment and aligned_size only for the current architecture. Not a big
4137 deal since we send structure fields one after the other (seems
4139 - Add the datastructure used for IEEE paper by the PBIO guys to the test
4140 program, let it work on linux/gcc/little32. portability todo.
4142 2004-07-08 Martin Quinson
4143 - import and improve remote compilation support from FAST
4144 - make sure make check works on half a dozen of machines out there
4146 2004-07-07 Martin Quinson
4147 Let's say it's version 0.0.3 ;)
4148 - Implement conversions (yuhu!)
4149 - Let it work on solaris (beside conversion, of course)
4150 - Stupid me, using rand() to generate the conversion datatests in not wise.
4152 2004-07-06 Martin Quinson
4153 - Let make dist work, since I'm gonna need it to compile on remote hosts
4154 - Let Tests/datadesc_usage write the architecture on which the file was
4155 generated as first byte.
4156 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
4157 architecture descriptions.
4158 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
4159 on those architectures.
4160 - Optimization: send/recv array of scalar in one shoot
4162 2004-07-05 Martin Quinson
4163 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
4165 - Plug a whole bunch of memleaks
4166 - each process now have to call gras_{init,exit}. One day, their log
4167 settings will be separated
4168 - Continue the code factorisation between SG, RL and common in Transport.
4170 2004-07-04 Martin Quinson
4172 - Redistribution between SG and RL.
4173 We wanna have to accept in SG, so move accepted related parts of RL in
4174 the common part. (more precisely, the dynar of all known sockets is no
4175 more a static in transport.c, but part of the process_data)
4177 [gras_stub_generator]
4178 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
4180 2004-07-03 Martin Quinson
4181 - Create a new log channel tbx containing dict, set, log, dynar (to shut
4182 them all up in one shot)
4184 - Fix the ugly case of reference to dynamic array.
4185 - New (semi-public) function gras_datadesc_size to allow the messaging
4186 layer to malloc the needed space for the buffer.
4188 - gras_socket_close now expect the socket to close (and not its address to
4189 put NULL in it after it). This is because the socket passed to handlers
4190 is one of their argument (=> not writable).
4192 - propagate the interface cleanup from last week in datadesc, ie remove a
4193 superfluous level of indirection. User pass adress of variable
4194 containing data (both when sending and receiving), and not of a variable
4195 being a pointer to the data. Let's say that I like it better ;)
4196 The price for that is constructs like "int msg=*(int*)payload" in
4197 handlers, but it's a fine price, IMHO.
4199 - Let it work in RL (yuhu)
4201 2004-06-21 Martin Quinson
4203 - porting SG plugin and SG select to new standards (works almost).
4204 - plug memleaks and fix bugs around.
4207 - cleanup the prototype of data recv and force users to specify when they
4208 want to handle references to objects. Test case working even for cycles.
4209 - plug memleaks. Valgrind is perfectly ok with this.
4211 2004-06-12 Martin Quinson
4213 - cleanup the separation between plugin and main code in plugin creation
4215 2004-06-11 Martin Quinson
4217 - Reput hook for raw sockets, needed for BW experiments
4218 - kill a few lines of dead code
4219 [Data description] Interface cleanup
4220 - gras_datadesc_by_name returns the searched type or NULL.
4221 That way, no variable is needed to use a type desc once, which makes
4223 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
4224 two parameters were strings (field name, type name), leading to
4226 [Dicos] Interface cleanup
4227 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
4228 This is consistant with the dynar API.
4230 2004-04-21 Martin Quinson
4232 - Porting to new standards.
4234 - interface cleanup.
4235 There is no bag anymore, no need to take extra provision to mask the
4236 pointers behind "ID".
4237 Better splitup of functions between files create/exchange/convert.
4238 This is still a bit artificial since convert and receive are so
4239 interleaved, but anyway.
4241 - add a queued message list to procdata (the ones not matching criteria
4243 - factorize some more code between SG and RL wrt procdata
4245 - use gras_exit in example to track memleaks
4246 - get rid of gs_example now that GS is properly integrated into gras
4247 - update run_test to integrate the latest tests (datadesc)
4249 - rename WARNINGn macros to WARNn since it prooved error-prone
4251 2004-04-19 Martin Quinson
4253 - register init/exit functions within gras module mechanism
4254 - send/receive function.
4255 Convertion is not implemented, but short-cutted if not needed.
4256 struct/array elements are sent one by one (instead of block-wise), but
4257 nobody really cares (yet). Get a prototype before optimizing.
4258 - tests (using a file socket) for DD send/receive on:
4259 - base types: int, float
4260 - array: fixed size, string (ie ref to dynamic string)
4261 - structure: homogeneous, heterogeneous
4262 - chained list, graph with cycle
4263 Believe it or not, valgrind is not too unhappy with the results. The
4264 cycle happily segfaults, but the others are ok. And I'm sick of pointers
4268 - Bugfix when using a filename explicitly (instead of '-')
4270 2004-04-09 Martin Quinson
4272 - factorize more code between RL and SG in socket creation
4273 - Complete the implementation and tests of:
4275 o file (only in RL, and mainly for debugging)
4277 I lost 3 days to design a portable address resolver, and then decided
4278 that the prototype mainly have to run on my box.
4279 Addressing portability too early may be like optimizing too early :-/
4281 - use gras_init in the Tests instead of the crappy parse_log_opt
4282 (the latter function is removed)
4283 [Conditional execution]
4284 - New functions: gras_if_RL/gras_if_SG (basic support for this)
4285 [Code reorganisation]
4286 - Get rid of libgrasutils.a since it makes more trouble than it solves.
4287 Build examples against the RL library, since there is no way to disable
4288 its creation for now.
4290 For information, the beginning of coding on GRAS was back in june
4291 2003. I guess that every line has been rewritten at least twice since