1 SimGrid (3.11) NOT RELEASED; urgency=low
3 TENTATIVE RELEASE GOALS for 3.11:
4 * Switch to tesh.pl, and kill the now unused parts of xbt that seem fragile
5 * Clean up CMake files (may need a full rewrite).
6 Non exhaustive list of subgoals:
7 - Use genuine cmake mechanisms and variables when available,
8 instead of reinventing the wheel.
9 - Correctly determine system and architecture (e.g. x32).
10 - Correctly determine compiler type and version (e.g. clang).
11 - Correctly set compiler flags according to compiler type and version.
12 - Correctly set compiler flags for C++, Java, and Fortran compilers too.
13 - Use git to generate the dist archive. Either use git-archive to
14 generate the tarball, or keep using cmake -E tar, but use git-ls-files
15 to get the list of files to pack.
16 - For Java, add an option to enable/disable the inclusion of the native
17 libraries in the jar file, and avoid to duplicate these files.
20 * Normalizing pointers addresses tool for better diff between logs
23 * Add cloud examples using new VMs
24 - examples/msg/cloud/two_tasks_vm.tesh
25 - examples/msg/cloud/simple_vm.tesh
26 - examples/java/cloud/cloud.tesh
27 - examples/java/cloud/migration/migration.tesh
31 - creation of a VM on a PM
32 - migration of a VM from a PM to another PM
35 * Simcalls are now generated by a python script
36 - generate files include by simgrid
37 - check that all the functions exists and propose prototypes
39 - remove sem_destroy, file_set_data, comm_destroy, vm_set_state,
40 host_set_data, host_get_data
43 * Translate surf models from C to C++
44 - Generic classes for all models: Model, Resource, Action
45 - A generic interface for each kind of model (cpu, network, storage
46 workstation, workstationvm)
48 * Translate surf routings from C to C++
49 * Add callbacks using sigc++ or boost::signals2
50 - Add callback functions for resource creation/destruction
51 - Add callback finctions for action state change
52 - Handle Energy as a plugin
53 * Replace swag by boost::intrusive
54 * Add new routing model for torus clusters
58 * hostfiles support host:nb_processes construct to deploy several processes on
60 * Collective communication algorithms should not crash if used with
61 improper number of nodes and report the error.
64 * Supernovae build mode is definitively removed. It was used to improve
65 inlining and inter-module optimizations. It is nowadays superseded by
66 link-time optimizations commonly available in compilers.
68 * Add boost dependency for surf++
70 -- $date Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
72 SimGrid (3.10) stable; urgency=low
74 The Clean Diaper Release, a.k.a. SimGrid is leak-free.
77 * Reintegrate Java to the main archive as desynchronizing these
78 package is not acceptable anymore (Java is now considered stable)
79 * Add explicit synchronization facilities through semaphores
80 * Bug fix: Task.setDataSize() only changed the C world, not the value
81 cached in the Java world
84 * Dramatically change the way files are handled. API and internals changed, but
85 this part of MSG was not considered as production grade either.
86 * Add explicit synchronization facilities through semaphores
87 * Add a new function MSG_host_get_process_list()
88 * Preliminary DVFS support (see examples/msg/energy/ for details)
91 * SMPI is now included directly in the libsimgrid as the windows
92 linker doesn't force us on splitting it anymore.
93 * Improvements of the SMPI replay tool:
94 - Most of the collective communications are now rooted in the same process as
95 in the original application.
96 - Traces now rely on the same MPI data type as the application (MPI_BYTE was
97 used until now). Multiple data types can now be used in a trace.
98 - The replay tool now supports traces produce either by TAU or a modified
100 - Bug Fix: the compute part of the reduce action is now taken into account.
101 - Gatherv collective is now supported
102 - SimGrid (SMPI for now) can generate replay traces as well. Option -trace-ti
103 of smpirun outputs time independent traces for the current run. One file
104 is created per process. If too many processes are simulated, this behavior
105 can be changed to one file for all processes by using the
106 tracing/smpi/format/ti_one_file flag
107 * smpirun generates the host file if needed (with given host count and platform)
108 * Integration of more than 100 STAR-MPI, MPICH, OpenMPI collective algorithms
109 - allows to select one in particular with --cfg=smpi/coll_name:algorithm
110 - allows to use the decision logic of OpenMPI(1.7) or MPICH(3.0.4) by setting
111 --cfg=smpi/coll_selector:(mpich/ompi)
112 * Support for new functions : MPI_Issend, MPI_Ssend, Commutative operations in
114 * Add a --cfg:tracing/smpi/internals option, to trace internal communications
115 happening inside a collective SMPI call.
116 * Fix the behavior of complex data types handling.
117 * Make MPI_Wtime another synchronization point to take computations into account.
118 * Replace MPICH-1 test suite by the one from MPICH 3.0.4. Can be built using
119 enable_smpi_MPICH3_testsuite flag in cmake. Run with ctest.
120 * Add all missing Fortran bindings, SMPI should work with Fortran 90
121 (no privatization of global variables yet)
122 * Preliminary DVFS support (see examples/smpi/energy/ for details)
125 * Verification of liveness properties is now available for SMPI applications
126 (in addition to MSG applications)
127 * Bugged examples using SMPI in examples/smpi/mc/
128 * Add --cfg=model-check/visited option. Allows the verification of infinite
129 programs. Detection of loops in the execution thanks to the system state
130 comparison and reduction of the state space to explore. Can be combined with
131 DPOR for safety properties.
134 * Allow to change SimGrid configuration (see --help) within the code
135 thanks to SD_config() as it can be done in MSG.
136 * Add a new function SD_task_set_amount() upon user request.
139 * Handle units for values (10ms, 10kiloflops, 10Bps, 1GB, ...)
140 * Remove rule based routing (no more PCRE dependency)
141 * Add a limiter_link option to cluster tag, to specify a maximum reachable
142 bandwidth in fullduplex mode when it is less than twice the nominal bandwidth.
143 * Add a loopback_bw and loopback_lat options to cluster tag.
144 * Fix the peer tag that could not be mixed with other AS within a Vivaldi
145 routing. Now peers are encapsulated in an AS and have their own private
146 router but this is transparent.
149 * Our own implementation of getline is renamed xbt_getline, and gets
150 used even if the OS provide a getline(). This should reduce the
151 configuration complexity by using the same code on all platforms.
152 * New type: xbt_cfg_elm_boolean.
153 * Allow to use yes/no for boolean configuration options in the command line.
154 * Allow to disable SimGrid cleanups at exit from command line option.
155 There are situations where one may want a simulation to end with an exit.
156 Unfortunately, calling exit may cause SimGrid to segfault, which is quite
157 annoying when scripting around the simulator. Adding a
158 --cfg=clean_atexit:no allows to circumvent this issue.
161 * Lots of memory leaks were corrected in this release.
162 There is no known memory leaks anymore, in all of our 600+ tests.
163 * New command line option --version, to get SimGrid version information.
164 Packagers may want to add extra words to SIMGRID_VERSION_EXTRA defined in
166 * Supernovae builds are deprecated, and expected to be removed in the next
169 -- Sun Nov 17 00:26:44 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
171 SimGrid (3.9) stable; urgency=low
173 The Grasgory release: GRAS is really dead now.
175 * Complete overhaul of the internal host structures scheme.
178 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
179 was considered as experimental and badly maintained since then.
180 * Keeping it was thus a trap to our potential users, that could take
181 it instead of MSG or SMPI by mistake despite is pity state.
182 * GRAS seems to have very few users (if any), and no one volunteered
183 to maintain it further. It also induces a lot of XBT code (for
184 portability sake), that must be maintained too.
185 * For all these reasons, we killed GRAS. If someone wants to revive it
186 in the future, don't cry, our git history still remembers of GRAS.
189 * Major overhaul. Merge our documentation again as time proved that
190 splitting it was really not helping our users.
191 * Further improve the developer documentation to help newcomers
192 hacking on SimGrid itself. The user documentation (and in
193 particular, the beginner documentation) is still in a sorry state.
196 * Now works on Windows too!
197 * Much more extensive test suite, from MPICH
200 * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
201 (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
202 dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
203 * Bug fix: let task be scheduled when the last dependency to be solved is
204 a control dependency.
205 * Remove SD_load_environment_script function.
206 Use the C sg_platf function if you want to declare a platform
210 * New function: MSG_process_get_number()
211 * Old function documented: MSG_config()
212 * Remove MSG_load_platform_script function
213 Use the C sg_platf function if you want to declare a platform
217 * Change the default value of the TCP_gamma constant (maximal size of TCP
218 congestion window) to a more realistic 4MiB value. If you notice changes in
219 your simulation results, you can fall back to the previous 20k tiny window
220 by adding --cfg=network/TCP_gamma:20000 on command line.
221 * (Hopefully) fix a bug wrt periodic availability and state traces
222 * Bug fix: use default values at start when first event in availability/state
223 trace is not at time 0.
226 * remove the "new_" part of function name sg_platf_new_trace_connect
227 (resulting in sg_platf_trace_connect), since it does not create
231 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
232 use case where it's really mandatory, and maintaining it was a pain in
234 * New: xbt_fifo_search(), search an item with a user-provided
235 comparison function instead of dumb pointer comparison.
238 * Fix the lua deployment:
239 Use `simgrid.init_application()` before deployment instead of
240 `simgrid.msg_register_application()` after.
243 * Transfer the tracing files into the corresponding modules.
245 -- Tue Feb 5 11:31:43 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
247 SimGrid (3.8.1) stable; urgency=low
249 The "we are told that some people want to also *install* the simgrid
252 * Add missing file "tesh.1" to the archive.
254 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
256 SimGrid (3.8) stable; urgency=low
258 The Psssshiiiit release: SimGrid jumps into the Cloud.
261 * Add an experimental interface to manipulate VMs. They are mainly
262 process groups with very few intrinsic semantic, but they should
263 allow you to build the semantic you want easily.
264 * New function: MSG_host_set_property_value()
265 * New function: MSG_process_on_exit(). To clean memory in all cases.
266 * Bug fixes that made the host (and link) failures unusable.
267 * Add a way to auto-restart process when the host in which they are
268 executing comes back (ON_FAILURE="RESTART" on deployment file,
269 MSG_process_auto_restart_set).
270 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
271 please stop using the old ones, they are DEPRECATED.
273 * Deprecate functions MSG_global_init() / MSG_global_init_args()
274 Please use MSG_init() instead. (reducing the amount of entry
275 points in the library helps us).
276 * Make it impossible to link against the wrong version of the lib
277 * Deprecate MSG_clean(). No need to call it anymore.
278 * Function MSG_get_host_number() is not deprecated anymore.
281 * Split the doc into a user guide and a reference guide.
282 * Start a developper guide to help people hacking on SimGrid.
285 * Enable tracing by default. This modules rocks you should use it.
286 * Remove option custom_flags. Now use environment variables CFLAGS
288 * Use default cmake things to detect lua instead of home grown ones.
289 * New option "enable_mallocators" to disable mallocators, for debugging
290 purpose ("on" by default).
293 * Bug fixes around the resource failures: don't let the processes
294 survive the host they are running onto.
295 * Add an interface to auto-restart processes when the host in which they are
296 executing comes back.
297 * Ensures that SIMIX_clean is called automatically. It's not part of
298 the public interface anymore (bindings should be updated).
301 * Bug fix for when SD_Simulate is called with a positive value: be careful
302 when comparing doubles. Sometimes they are different for non significant
304 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
305 parallel task whose initial work is distributed among host according
306 to the Amdahl's law. Such tasks are created with a parameter alpha
307 that corresponds to the non-parallelizable part of the computation.
308 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
309 between two sets of workstations assuming a 1D block distribution (each
310 workstation owns a similar share of data) on both sides.
312 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
313 Data redistribution will be automatically scheduled once parent and child
314 are both scheduled. The filling of computation_amount and
315 communication_amount structures is now done seamlessly thanks to the chosen
317 * New function SD_workstation_dump to display various information
318 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
319 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
320 bandwidth on the route onto which the task is scheduled and the amount of
322 To divide the nominal bandwidth by 2, the rate then has to be :
323 rate = bandwidth/(2*amount)
324 * Compute tasks that have failed can now be rescheduled and executed again
325 (from their beginning)
326 * Increasing source code coverage (src/simdag is now covered at 95.8%
330 * Re-implement time-independent trace replay using SMPI (at the
331 smpi_smp_* level) instead of MSG. This should replace
332 examples/msg/actions/actions.c
333 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
334 hindexed and structs)
335 * Implement the exchange of non-contiguous data.
336 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
337 * Correct behavior of smpi/sender_gap and set its default value to 0
338 * Add option to asynchronously send small messages to allow better
339 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
340 specifies the size in bytes under which messages will be asynchronously sent.
341 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
342 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
345 * New C interface to define a platform: XML is now optional.
346 For more info, please check include/simgrid/platf.h.
347 * New interface to define random platforms from the C:
348 For more info, please check include/simgrid/platf_generator.h and
349 examples/msg/masterslave/masterslave_platfgen.c
350 * Export a sg_cmdline dynar containing all the arguments we got from
354 * Two new tracing options for adding comments to trace file so you
355 can track your experiments (see --help-tracing for details).
356 * New option to generate a impoverished trace file (--cfg=tracing/basic:1)
357 * Adding the SimGrid version that generated the trace file as a comment.
358 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
359 * Fix to avoid key clashes on Paje links
360 * Other minor fixes related to the Paje specification
363 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
364 and renamed to xbt_str_hash() and xbt_str_hash_ext().
365 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
366 * Greatly improve the robustness of mmalloc to user errors (such as
367 using an area after freeing it, or freeing it twice)
369 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
371 SimGrid (3.7.1) stable; urgency=low
374 * Restore the prototype of MSG_process_create_with_environment() to
375 the pre-3.7 situation by removing the kill_time argument.
376 * Add a MSG_process_set_kill_time() function instead.
379 * Fix weird behaviors when dealing with parallel tasks.
382 * Simgrid is now built as a dll.
383 * Simgrid-java now works on Windows.
384 * Simgrid-Java is now included into Windows package.
387 * First pre-build package for MacOSX.
390 * Fix compilation when using MSG_USE_DEPRECATED.
391 * Fix some compilation issues on Macs and Windows.
392 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
393 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
395 We discovered that the Lua console is broken, but we are missing the
396 manpower to fix it right now. The problem existed in 3.7 too, so we
397 are not blocking the release for that. Sorry if you depended on this
398 feature, any help would be really welcome.
400 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
402 SimGrid (3.7) stable; urgency=low
404 The "spring cleanups (before the next Big Project kicks in)" release.
407 * We can specify the SMPI latency/bandwidth factor with command line
408 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
409 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
410 You can also use the "config tag" from platform file by adding this line
411 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
412 (see "example/platforms/tag_config.xml" to use "config tag").
413 Note that the command line supersedes the platform file configuration.
414 * Change the correction factors used in LMM model, according to
415 the latest experiments described in INRIA RR-7821.
416 Accuracy should be improved this way.
417 * Use the partial invalidation optimization by default for the
418 network too. Should produce the exact same results, only faster.
419 * Major cleanup in surf to merge models and split some optimization
420 mechanisms from the core of the models. As a result you can now
421 specify which model to use (e.g., --cfg=network/model:LV08
422 --cfg=cpu/model:Cas01) and which optimization mode to use
423 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
424 Incompatible combinations should err at initialization. See
425 --help-models for the list of all models and optimization modes.
426 * The CLM03 workstation model was dropped for simplicity because it
427 used the deprecated CM02 network model. Use default instead.
428 * Rename the TCP_gamma configuration option to network/TCP_gamma
429 * Rename the coordinates configuration option to
430 network/coordinates, and document it
431 * Use now crosstraffic keyword instead of the terribly misleading
432 fullduplex keyword. It is activated by default now in the current
433 default model, use --cfg=network/crosstraffic:0 to turn it off.
434 * Ongoing refactoring the model parsing to make XML files optional
435 See include/simgrid/platf.h for details (still to be completed)
438 * Major overhaul of the documentation. Almost instructive now :/
439 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
440 functions and friends. This interface was considered as
441 deprecated since over 2 years, it's time to inform our users that it is.
442 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
443 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
444 use these (crappy) functions in your code.
445 These functions will be removed soon. Stop using them now.
446 * Deprecate MSG_get_host_{table,number}
447 Implement MSG_hosts_as_dynar() instead.
448 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
449 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
452 * Stabilize the parallel execution mode of user contexts
453 * Introduce configuration variables to control parallel execution:
454 - contexts/synchro: Synchronization mode to use when running
455 contexts in parallel (either futex, posix or busy_wait)
456 - contexts/parallel_threshold: Minimal number of user contexts
457 that must be part of a scheduling round to switch to parallel
458 execution mode (raw contexts only)
459 * Fix bugs that prevented to use suspend/resume along with
460 synchronization structures.
461 * Fix bugs in process termination that lead to invalid memory access
462 in very specific conditions.
465 * Introduce a parallel mode for the models (controlled by surf/nthreads
466 configuration item). In our tests, running the models in parallel
467 never lead to any speedups because they are so fast that the gain
468 of computing each model in parallel does not amortizes the
469 synchronization costs, even when ultra fast futexes are used.
470 This is released anyway because YMMV.
473 * Performance boost by using a swag internally to compute the set of
474 tasks that are finished and should constitute the return value of
478 * Enable it by default now that it is considered rather stable.
481 * Documentation of the tracing functions.
482 * Performance gains when tracing categorized/uncategorized resource
483 utilization by avoiding calls to get route when updating resource
484 variables. LMM constraints are being used instead.
485 * API changed to set task categories. Use MSG_task_set_category instead
486 of TRACE_msg_set_task_category, and SD_task_set_category instead
487 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
488 * Bugfix for graphicator, routes not correctly obtained, memory leaks
489 * Examples for link user variables added (see at examples/msg/tracing/)
490 * Deprecated function TRACE_msg_set_process_category completely removed
491 * Trace header updated according to the latest Paje file format
492 * Tracing network lazy updates, no longer obligate users to use full updates
493 * --cfg=tracing/platform:1 also registers power/bandwidth variables
494 * Experimental: let user code declare/set/push/pop application states for hosts
495 * API changed to allow the manual creation of graph configuration files
496 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
499 * Improve the API of Lua MSG bindings, using the Lua spirit.
500 * Each simulated process now lives in its own Lua world (globals are
501 automatically duplicated). It helps writing simulators. Will allow
502 to run Splay programs within SimGrid in the future.
503 * Add a Chord example in Lua, equivalent to the MSG one.
506 * Start the implementation of a solution to express temporal
507 properties, not only local assertions. This is still an
508 experimental work in progress, stay clear from it to be safe.
512 - Add new runtime parameters --help-logs and --help-log-categories
513 to display informations about supported logging parameters and
515 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
516 don't exists anymore.
517 * Mallocators: allow value NULL for the reset function.
519 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
520 create homogeneous dictionaries, where all the elements share the
521 same free function. Non homogeneous dictionaries will be
522 deprecated in the next release.
523 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
524 - Multi-level dictionaries are deprecated.
526 - new function xbt_dynar_search_or_negative() that is useful when
527 you have less than 2 million elements in your dynar and don't
528 want of the extra complexity of catching exceptions when the
529 element is not found.
531 - Make xbt_os_thread module (for thread portability) public.
532 Documentation is still to come, sorry.
534 - Cleanups and simplifications to make it maintainable again.
535 - Exotic features (such as memalign and valloc) were removed.
536 - The metadata were extended and improved so that the
537 model-checker becomes able to explore and inspect the heaps.
538 - This may induce a performance drop when enable_model-checking is
539 ON in cmake (even if it's not used in the simulation), but it is
540 necessary at this point to get MC working.
542 Turn model-checking OFF if simulation performance matters to you.
543 Not enabling it at runtime is not enough, disable it in cmake.
545 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
547 SimGrid (3.6.2) stable; urgency=low
549 The "Not coding new stuff allows to polish old things" release.
552 * New bindings to the NS3 packet level simulator (experimental)
553 * Use the raw (efficient) execution contexts instead of the sysv
554 (portable) ones when possible.
555 * libpcre is now mandatory in any cases since not using it led to
556 severe performance loss and possibly other issues
557 * Update the XML platforms:
558 - G5K: include the latest machine in Nancy
559 - GridPP and LCG: new platforms
560 * Documentation was partially updated, at least (more to come)
562 Bug fixes, cosmetics and small improvements
563 * Free terminated processes before the end of the simulation to avoid
564 exhausting the memory of users having very dynamic amount of
566 * Bug fix and cosmetics about canceling non-running tasks
567 * Bug fix about the dot loader's issues when using libcgraph
570 * Create an installer for windows with nsis (amd64 and win32)
571 - Add an hello world project to illustrate simgrid project creation.
572 - Embed libpcre into the Simgrid installer to avoid
573 its compilation burden
574 * The raw execution contexts should work on Apple now
575 * Port to Windows 64 bits
576 - Sysv contexts now have an implementation for this arch
577 - GRAS communication features now support this arch
578 * Drop support for borland compiler on windows
579 - this code was not maintained, and we kinda depend on gcc nowadays
580 * Fix portability issues on kfreebsd/gnu: build error about semaphores
581 * Fix portability issue on unstable ubuntu: linker became picky on
584 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
586 SimGrid (3.6.1) stable; urgency=low
588 The "Oops, we broke Macs too" release
591 * Fixed contexts detection so that raw ones are used when possible
592 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
593 leads to a strange error, with user code segfaulting sometimes when
594 the generated code is not perfectly aligned (which is not
595 controllable from the user side, depends on the amount of code)
598 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
600 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
602 SimGrid (3.6) stable; urgency=medium
604 The Summer Release, also known as the "OMG! They Killed Kenny!" version
607 * Bindings now constitute their own package, separated from the main one.
608 Rationale: reduce our maintenance nightmare by reducing the module coupling
609 They will soon be released on their own on gforge.
611 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
612 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
614 GRAS: It is not considered as stable anymore, but experimental. Sorry.
615 * It's not quite deprecated for now because we have no replacement,
616 but it may soon become the case.
619 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
620 * Fortran: New user-level cache variable to store the rank of the running
621 process. This improves performance by an order of magnitude.
622 * C: New coccinelle script to automatically locate and modify global and
623 local static variables.
624 * Improved SMPI network model with a sender-side gap to account for multiple
628 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
629 only say if a communication is finished, no matter whether it succeeded or
630 failed. You can call MSG_comm_get_status() to know the status of a finished
632 * New function MSG_task_dsend() to send a task and detach it. When a
633 communication is detached, you are never notified of its success or failure
634 and the memory is released automatically once it is finished. This function
635 is useful when you don't care about the end nor the success of a
637 * Change the prototypes of action replay. Sorry for inconvenience,
638 but this is really more efficient this way (and to adapt your code,
639 you just have to fix the initialization, that shouldn't be too long)
640 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
641 ever managed to do anything useful with it.
642 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
643 takes a dynar of communications. It returns immediately and gives the
644 index of a finished communication (if any).
645 * New example: a basic implementation of the Chord P2P algorithm.
648 * New model for multi-core CPUs. You can now use the core attribute to
649 precise the number of cores of a host. This is a basic model. Every
650 process running on the host receives at most the power provided in
651 the DTD (throughput<=power). Total throughput of process cannot exceed
653 * New peer tag. This peer tag creates a tiny AS comprising a host and a
654 router linked by an up-link and a down-link (possibly asymmetrical).
655 This kind of pattern allows to easily build last-mile model style platforms.
656 Aggregating such patterns in a rule-based AS is thus the technique of
657 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
658 * New model for Vivaldi routing. We transformed the Vivaldi network model
659 into a Vivaldi routing model (based on the rule-based model). This allows to
660 combine Vivaldi based latencies with last-mile platforms.
663 * Added a check for NaN of IEEE754 infinite in the double entries of
665 * Introduce a new context factory "raw", highly inspirated from the
666 ucontext factory, but using manually crafted functions in assembly to
667 do the work in an efficient manner.
668 * Allow to change the used context factory at run time, not only at
669 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
670 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
671 contexts at runtime (only with raw contexts or ucontexts).
672 * Completely rewrote this module to allow parallel execution of user
673 processes. Use --cfg=contexts/nthreads:N to execute user processes
674 with N parallel threads (the default is 1, meaning no parallelism).
675 * Allow to decide dynamically between sequential and parallel modes.
676 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
677 processes in parallel only when their number is greater than or equal to P
679 * Added a check for NaN of IEEE754 infinite in the double entries of
683 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
684 won't output the state of processes when interrupted with Ctrl-C
685 * Add a new function xbt_dynar_to_array that transforms a dynar into a
686 NULL-terminated array. This may solve backward compatibility issues
687 due to the change to return type of SD_simulate. See also:
688 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
689 * Add new macros with variable number of arguments.
690 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
691 - in xbt/asserts.h: xbt_assert
692 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
693 - in xbt/ex.h: THROWF and RETHROWF.
694 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
696 * Change xbt_die() to accept a format string with arguments, just like printf.
697 * New data structure: xbt_lib_t, like a dict but more general and with better
701 * New configuration options
702 Options triva/categorized and triva/uncategorized can be used to generate
703 graph configuration files for Triva visualization tool.
704 * Configuration option tracing/platform is renamed to tracing/categorized
705 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
706 * New TRACE_user_link_variable interface:
707 User provides the name of the link and the tracing variable to attach to it
708 * the declaration of tracing categories must be done after the environment
710 * simpler tracing interface, just one way to declare categories
711 TRACE_category or TRACE_category_with_color, it is up to you
712 * links in the trace file are again identified by their names
713 * trace contains the full platform hierarchy exactly as declared using the ASes
714 * Options tracing/msg/[task|process]:1 groups the process by hosts
715 for both cases, tasks and processes must have names that are unique during the simulation
716 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
717 * The experimental option tracing/msg/volume is deprecated
718 its functionality may be reincorporated if needed
720 The tracing generates a trace file with unordered timestamped events,
721 because of the way the core simulator (surf) works. A script available
722 at the tools directory (fix-paje-trace.sh) can be used to put the events
723 in order. We have changed the tracing so it can generate ordered timestamped
724 events in the final trace, but depending on the simulator (and how much time
725 is simulated) that can lead to a huge memory utilization. It is deactivated
726 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
729 * Define a SIMGRID_VERSION macro in simgrid_config.h.
730 - We are trying hard to keep the API stable, but it may happen that
731 some things change (we're a research project after all, not a
732 nuclear plant operating system). If such things should happen, you
733 could rely on that macro to adapt.
734 - current value: 30600 for 3.06.00, aka 3.6
735 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
736 a number that can be compared with SIMGRID_VERSION.
737 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
738 assertions and verbose/debug logging events are disabled at compile time.
740 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
742 SimGrid (3.5) stable; urgency=medium
745 * New feature to any SimGrid-based simulator: Model-Checking
746 Check SIN#1 for more details.
749 * New Model SMPI (three-interval linear regression for correction factors)
750 See RR-7426, available at http://hal.inria.fr/inria-00527150
751 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
752 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
753 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
754 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
755 * See also src/smpi/README
760 - Tracing API changes: TRACE_start and TRACE_end should not be called
761 by user-code. They are automatically called by simulators created
762 with SimDAG, MSG and SMPI if the toolkit is compiled with
763 tracing_enabled=ON. Categories declaration and utilization remain the
764 same for MSG and SimDag.
765 - A function was added to the tracing API to declare categories with
767 - TRACE_category_with_color (char *category, char *color)
768 where color must be in the following format
769 "%f %f %f", red, green, blue
770 and red, green, blue are float values in the interval [0, 1]
771 - User can specify NULL as color parameter, or continue calling
773 On that case, the tracing system will define random colors
774 - The following command-line options are supported:
775 --cfg=tracing/filename:msg.trace
776 --cfg=tracing:1 (activate tracing, needed to use others)
777 --cfg=tracing/platform:1 (categorized resource use)
778 --cfg=tracing/uncategorized:1 (uncategorized resource use)
779 --cfg=tracing/msg/task:1 (task creation)
780 --cfg=tracing/msg/process:1 (process creation, migration)
781 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
782 --cfg=tracing/smpi:1 (SMPI interface tracing)
783 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
784 - examples of examples/msg/tracing updated
786 - DAXLoader and DOTLoader functions can generate tasks with categories
787 - A new function to attribute a category to SD tasks:
788 TRACE_sd_set_task_category (SD_task_t task, char *category)
789 * Tracing the MPI interface implemented by SMPI
790 - Collective operations are traced with states
791 - Point-to-Point operations are traced with states/links
792 - Tracing activated by a parameter "-trace filename" passed
793 to smpirun during execution (considering that simgrid
794 is compiled with tracing enabled)
795 - To run the simulation with gdb, the simulator
796 accepts --cfg=tracing/smpi:1 to trace SMPI
797 - tesh files to check if smpi tracing is ok
798 - See examples/smpi/NAS/DT-trace
799 * GTNetS tracing re-worked
800 - adaptation to the tracing system of GTNets to cope
801 with modifications regarding the fullduplex mode
802 - new tesh files to check if gtnets tracing is ok
805 * Asynchronous communications through the functions:
806 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
807 * New function: MSG_load_platform_script()
808 to make possible using a lua script instead of XML files to set up platforms
809 * New function: MSG_set_function
810 to associate functions to processes, used when bypassing the parser
811 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
813 Platforms: Add some more examples in examples/platforms
814 * Grid'5000: see www.grid5000.fr
815 * *_30000_hosts.xml: various huge files [mainly scalability testing]
818 * Change the XML format. This is a very important modification. SimGrid
819 3.5 introduces a new hierarchical format based on the notion of
820 Autonomous Systems. Compatibility with old format is ensured
821 through the perl script provided in the install bin directory
822 bin/simgrid_update_xml.
823 It is now possible to build platforms with specific routing
824 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
825 connect several platforms together. We will try to provide soon
826 set of realistic platforms exploiting these properties (have a
827 look at examples/platforms/ for the moment).
828 * Take the opportunity of the XML format change to be a good XML citizen:
829 rename link:ctn to link_ctn and similar changes (also dealt with by
831 * Add a new routing scheme (rule-based) using regular expressions. It
832 enables to have an extremely low memory footprint when the
833 underlying routing is simple and can be compactly described. You
834 need to have libpcre4-dev (perl regular expressions) installed if
835 you want to use this routing scheme.
836 * Revive the cluster TAG and allow to easily and efficiently (both in
837 term of memory and speed) connect clusters together. Have a look
838 at teshsuite/simdag/platforms/ to see how this can be done. With
839 this tag, you can create clusters with thousands of tasks at no
840 cost (have a look at examples/platforms/).
841 Note: clusters are implemented as ASes, so there is no need for an
842 enclosing AS tag if you have only one cluster in your platform.
843 * Add new generic functions in the public interface that allows the user
844 to call SURF 'create_resource' methods from your code (same
845 functionality as the XML bypass mechanism but with a much lighter
847 * Add a new model (enabled through command line --cfg=network/model:SMPI)
848 that uses a piecewise linear approximation to produce better
849 results when exchanging small messages.
850 * Add a new parameter to handle correctly full duplex link and account
851 for interferences between uplink and downlink communications
852 (activate with --cfg=fullduplex:1).
855 * Rename the SD_READY (all dependencies are satisfied and task is
856 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
857 dependencies are satisfied) state.
858 This prevents a confusion between the notion of "ready to schedule"
859 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
860 simulated" (SD_RUNNABLE) used by the simulation kernel.
861 * Change the way a task is considered as ready. Instead of removing
862 dependencies when a task is done, a counter is decreased. This way,
863 it is always possible to reach ancestors thanks to the
864 SD_taks_get_parents function (even after the end of the simulation.)
865 * Change the return type of SD_Simulate from (SD_task_t*) into
866 xbt_dynar_t. This function was in handling a dynar internally and
867 converted it into a NULL terminated array for historical reasons.
868 * New function SD_dotload(char*) to load a DAG described in dot
869 format. This loader and the corresponding examples require the
870 installation of the graphviz library.
871 * Fix a bug in the management of tasks of size 0 in the surf network
872 models. This problem was only visible with SIMDAG and you should
873 thus disregard results produced with earlier versions if you
874 relied on this feature (some tasks were blocked because of this).
875 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
876 even though your applications were doing only point-to-point
877 communications and sequential computations. Now you can really use any
878 model you want (of course, if you create real parallel tasks, which are
879 not implemented in most models beside ptaskL07, this will abort).
880 * Add an example that schedules a DAX on an heterogeneous platform
881 using a Min-Min strategy.
882 * New function SD_workstation_get_current_task() that returns the kind
883 of task currently running on a workstation in the sequential access
885 * Raise some warnings when unexecuted tasks remains at the end of the
886 simulation. This is usually caused by cycles in the DAG.
889 * New function: SIMIX_process_set_function() called by MSG_set_function
890 * Change the underlying waiting queue in semaphores so that a process
891 can wait on several of them simultaneously (as in waitany).
892 * Fix the way to handle tokens in semaphores so that all access patterns
893 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
894 * kill the dirty pimple SIMIX_message_sizes_output()
895 Please use (proper) visualization instead
898 * New data container: setset (set of sets of elements)
899 * New module: mmalloc (mapped malloc, allowing to have several
900 independent segments of malloc)
901 * New function: xbt_dict_cursor_set_data()
902 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
903 * New function: xbt_dynar_is_empty()
904 * New function: xbt_fifo_get_last_item()
905 * Fix xbt_dynar_shrink(): use the right element size.
906 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
907 uninitialized areas during expand.
908 * Fix semaphores: previous implementation was severely broken.
909 * Use library init/fini functions for our initialization.
910 - you can use logs and other feature as soon as you want in your
911 code (even before the xbt_init / MSG_init)
912 - xbt_exit is now a no-op and produce a warning when used.
915 * Port GRAS to new SIMIX mechanisms. This allows gras users to
916 benefit from the latest improvement to the simulation kernel.
917 * Kill measurement sockets for now. If you rely on them, sorry. This
918 release is not for you. This feature will be reintroduced in the
919 future, but we cannot delay the release any further.
920 * New function: gras_msgtype_get_name().
921 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
922 * Fix (at last) the pmm example: it should not randomly fail anymore.
924 Build chain: bug fixes and overall polishing
925 * Cmake is now stable enough. Hence, we killed the autotools.
926 * Port to windows ( TM :)
927 * Fix the 'make install' target.
928 No need to use 'make install-simgrid' anymore
929 * Introduce a 'make dist' target compiling a *source* archive
930 'make package' compiles a binary archive
931 * Compile java files only on need
932 * Add --cd and --setenv command line options to tesh
933 * Out of source builds are not fully supported yet, but we are close
934 * Enable supernovae and optimization flags by default for our users
937 * Add layer to set up environment directly from lua, without XML.
938 * The effect of gras_stub_generator can be achieved through
939 lua too (check examples/gras/console/ping_generator.lua)
941 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
943 SimGrid (3.4.1) stable; urgency=low
945 The "Polishing easter eggs is probably a good idea" release.
946 This is a bug fixes release only.
950 * Fix a bug preventing the tasks from begin garbage collected.
953 * Fix a bug occuring when a host involved in a communication fails.
954 This was not detected properly by the other peer involved in the
955 communication. Now, it's reported as a network error.
958 * Warn the user about loop dependencies in data flow of DAX files
959 * Obey the control-flow dependencies of DAX files
962 * Add option "enable_smpi" allowing to not compile SMPI.
963 Probably useful for the (Mac) users experiencing a build error here
964 * Improve the detection of lua5.1 and ruby1.8
966 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
968 SimGrid (3.4) stable; urgency=low
970 The "Easter in Cargese" release. Also known as (major changes):
972 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
973 ~> bindings were greatly improved
974 ~> new tracing infrastructure for better visualization introduced
976 * the "Welcome to configury modernity" release.
977 ~> we switched from autotools to cmake, and improved our cdash
980 A more detailled list of changes follow (full detail in svn log).
982 Java Bindings: Various Cleanups
983 * (install java-gcj-compat-dev on debian-like to use them)
984 * Remove put/get: no need to export deprecated interface in Java
985 Use send/receive instead.
986 * Cleanup the examples and add a README per directory
987 * Remove example autoDestination (that's the only way to go now)
988 * Remove example explicitDestination (was a plain copy of basic)
989 * Make JniException a runtime exception, so that there is no need to
990 declare the fact that you may encounter such a beast. I guess that
991 nobody will ever want to survive such error.
992 * Create specific errors for each MSG case of failure:
993 host failure, transfer failure, timeout, task cancelled
994 * Cleanup the exceptions that may get thrown by each function
995 * Other internal cleanups in Java bindings. Performance still bad :/
996 Ruby and Lua Bindings: create them
997 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
998 * That's new and great, you should try them out.
999 Same functionalities than Java bindings, only even less polished
1001 * Kill the useless "rate" argument of SD_task_get_execution_time()
1002 Everyone used to provide -1 as a value, it was not used, and the
1003 semantic of a possible use wasn't even clear.
1004 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
1005 either as comm costs or compute costs to mean that there is no
1006 such thing for that specific task.
1007 * Add a SD_task_set_name() function
1008 * Fix SD_task_unschedule() on typed tasks
1009 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
1010 * In DAX loader, accept useless 'level' attributes to <job> since
1011 LIGO DAGs have them (seem to be to ease graphical representation).
1013 * Add an example masterslave_mailbox.c using send/receive and not
1014 the deprecated put/get interface.
1015 * Kill the MSG_paje_output() function. It's a noop since 2 years.
1016 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
1018 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
1019 (declare MSG_USE_DEPRECATED to still have the old name)
1020 * Add a MSG_task_set_data() function
1021 * About trace replay (see examples/msg/actions):
1023 - Allow to work with splitted trace files for each process
1024 Give the specific trace file as argument of each process,
1025 and call MSG_action_trace_run(NULL)
1026 You can still have one merged file for all processes.
1027 - Fix implementation of collective operations
1028 * Allow task_execute() on 0-sized tasks (closes #10063)
1030 * This is the first release of SimGrid where SMPI is not considered
1031 beta anymore (even if some corners should still be improved)
1032 * Port over the new SIMIX_network submodule (internal refactoring)
1033 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
1034 * Implement more missing elements of the standard:
1036 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
1038 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
1039 MPI_Scan() MPI_Get_processor_name()
1040 - Added implementation of missing case for Alltoall (warning: it's
1041 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
1042 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
1043 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
1044 SMPI_MPI_Allgatherv()
1045 * Bug fixes include:
1046 - MPI_Waitsome() was broken
1047 - Allow relative includes in smpicc
1048 - Command line cfg argument 'reference_speed' was ignored...
1049 - Some functions did not properly lead to auto-benching of user code
1050 - smpicc passes -O2 by default (just like openmpi one)
1052 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
1053 * Bug fixes about timeouts during communications
1054 * add SIMIX_message_sizes_output() as a pimple to write to file the
1055 amount of messages per size. Use gnuplot to get histogram.
1056 Pimple because that's the only user-visible function of simix,
1057 defined directly in xbt.h (irk, sorry)
1059 - Add a SIMIX_sem_get_capacity() function
1060 - Fix interactions with processe resume/suspende
1061 - release_forever() was stupidly broken
1062 - Fix SIMIX_display_process_status() for processes in a semaphore
1063 - Make SIMIX_sem_block_onto() user-visible
1064 * Refactoring context stuff:
1065 - Use pseudo-OOP for better modularity
1066 - reimplement SIMIX_process_kill() without process_schedule() so
1067 that the latter can take as invariant that it is called from
1069 - Merge context_start into context_new for sake of simplicity
1071 * Add a Vivaldi network model, coded live during SUD'10 ;)
1072 * Rename configuration variables to start a hierarchy:
1073 o cpu_model -> cpu/model
1074 o network_model -> network/model
1075 o workstation_model -> workstation/model
1076 * New configuration variables:
1077 o network/bandwidth_factor: correction to bandwith
1078 o network/latency_factor: correction to latency
1079 o netwotk/weight_S: correction to the weight of competing streams
1080 * Add a long description to the models, that users can see with such
1081 argument on the command line: --cfg=cpu/model:help
1082 * --help-models display the long description of all known models
1084 * config: add the ability to set a default value after registration
1085 Does not override any previously set value (e.g. from cmd line)
1086 * dict: allow to have integer key and data.
1087 When so, you need to use the following functions
1088 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
1089 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
1090 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
1091 In contrary to regular dicts, the key is not malloced before copy.
1092 Mixing scalar and regular elements in the same dict is not tested
1094 * Allow to use xbt_dynar_shrink() to expend the dynar instead
1095 Tracing for Visualization:
1096 * SimGrid is now instrumented in order to generate a trace file for
1097 visualization analysis: to use it, need to compile SimGrid with the
1098 "tracing" option enabled, and instrument the program using SimGrid with
1099 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
1100 (among other functions).
1101 * The instrumentation only traces the platform utilization for now
1102 * Documentation to use the tracing functions and how to analyze the
1103 traces with the Triva tool is written.
1104 * More information about: SimGrid FAQ (in the section Tracing Simulations
1107 * We moved to cmake as default build system. Autotools support will
1108 be dropped soon. Check the FAQ for more info about how to use it.
1109 * Greatly improved our cdash/ctest interactions
1110 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
1111 * Added memory checking tests with valgrind; lot of memleak fixing.
1112 This may be the first release of simgrid with so few memory issues
1113 * Added code coverage tests.
1114 Our coverage is still improvable, but at least we see it on cdash.
1116 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
1118 SimGrid (3.3.4) stable; urgency=low
1120 The "Desktop Grid needs love too" release (also called Xmas release).
1122 Models improvements:
1123 * Major speedup in the maxmin system solving by using lazy evaluation
1124 Instead of solving completely the maxmin system at each iteration,
1125 only invalidate (and recompute) the modified parts.
1126 This new feature is enabled in default models but you can try to
1127 turn it on with "--cfg:maxmin-selective-update=1" for other models.
1128 * Cas01 IMproved as default CPU model
1129 This CPU model is the same Cas01 model, but it uses the
1130 maxmin-selective-update flag and a heap structure to manage
1131 actions on SURF kernel.
1132 It reduces the complexity to find the next action to finish and,
1133 consequently, it's faster than the old Cas01.
1134 This is the new default CPU model (Cas01).
1135 * Rename the old Cas01 model to Cas01_fullupdate
1136 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
1137 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
1138 * CpuTI (CPU Trace Integration)
1139 A new CPU model whose objective is simulate faster when using
1140 availability trace files.
1141 Instead of using a full featured, over engineered maxmin system for
1142 CPU modeling, this model does the pre-integration of traces files
1143 to calculate the amount of CPU power available, and so, executes
1144 faster than the old CPU models.
1145 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
1146 * Use LV08 as default network model since it gives better accuracy
1147 for small messages and shouldn't change things for big ones.
1148 Use --cfg=network_model:CM02 to get the previous behavior.
1151 ******************************************
1152 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
1153 ******************************************
1154 * The new CPU model may changes simulations!
1155 The point is that events occurring at the exact same timestamp
1156 are not scheduled in the same order with the old and new
1157 version. This may be enough to completely change the execution
1158 of simulations in some cases.
1159 * The new network model will change simulations!
1160 This new model is more realistic than the previous one, so you
1161 should consider redoing your old experiments with this model.
1162 Sorry for the inconvenience.
1165 * Introduce the supernovae compilation mode
1166 When compiled that way, the whole SimGrid (or almost) is put in a
1167 single compilation unit and compiled in one shoot.
1168 This is to help gcc which has difficulties to inline stuff from one
1170 The speedup seem to be above 15%, althrough more tests are needed on
1171 amd64 to confirm that gain.
1174 * Port of MSG's mailbox on top of SIMIX network
1175 The put/get mechanism was greatly simplified on the way.
1178 * New SIMIX network module. Provides:
1179 - Mailbox: rendez-vous mecanism to find with who you want to speak
1180 - Synchronous send/recv: easier and hopefully faster since the
1181 logic is handled in the maestro process directly now
1182 - Asynchronous send/recv: you dreamt of it? It's here now
1183 Too bad that nobody cared enough to propagate the change to MSG.
1184 * Add semaphores as SIMIX synchronization mechanism.
1187 * new function SD_daxload(char*) to load a DAX file
1188 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
1189 * Introduce typed tasks. Specify its kind and cost at creation.
1190 At scheduling, just give where it should be placed, and the cost
1191 for each involved resource is automatically computed.
1192 Existing constructors so far (more to come of course):
1193 - SD_task_create_comm_e2e() for end-to-end communication
1194 - SD_task_create_comp_seq() for sequential computation
1195 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
1196 * new function SD_task_dump() for debuging display
1197 * new function SD_task_dotty(task,FILE*) writing to file the info
1198 about the task in dotty format
1199 * SD_task_dependency_exists() can now cope with having one of its
1200 arguments NULL. If so, it tests whether the other argument has any
1202 * Add getters on list of preceding/following tasks:
1203 SD_task_get_parents(task) and SD_task_get_children(task)
1204 * Add getters on amount of workstations and list:
1205 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
1206 * Add getter on task kind: SD_task_get_kind(task)
1207 * Update the start_time and finish_time of tasks on completion/failure
1208 * Bugfix: Remove task from state swags when destroyed
1211 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
1214 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
1215 dynar with one separate thread per value of the dynar.
1216 * Change the prototype of xbt_thread_create(), sorry.
1217 Added a boolean parameter indicating whether we want to join this
1218 thread (used in SG only for now)
1219 * Implement xbt_thread_join and xbt_thread_yield in SG also.
1222 * GTNetS wrappers should now be usable again (and betterly tested too)
1223 * Fix a major regression from 3.2 where the timeout provided to
1224 MSG_task_put_with_timeout() was used as absolute time before which
1225 the comm should be done.
1226 * Start to fix the <cluster> tag.
1227 - Internal links should be good now (beside of the loopback, which
1228 use the private link instead)
1229 - paths to the external world is still rather broken
1230 - the <route:multi> tag is just broken. Actually that's brain-dead.
1231 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
1232 to make it less stupid
1233 ** Check your platform with teshsuite/simdag/platforms/flatifier **
1234 * Fix a source-level compatibility glitch from 3.2: after defining
1235 MSG_USE_DEPRECATED, you can use the old name
1236 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
1237 * Allow to compile from the SVN with automake 1.11
1238 * Fix some problems when using the "start_time" tag in deployment XMLs.
1239 * Fix #8569: XBT/synchro.h has redundant declarations
1240 * Fix #8563: MSG return values and exceptions
1241 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
1242 * Integrate patch #8636: Obey DESTDIR when installing documentation.
1243 Thanks to Robson Peixoto.
1244 * Fix a vicious bug in dictionaries inducing that some elements were
1245 not freed on xbt_dict_free()
1247 Portability report of this version:
1248 * Main portability targets:
1249 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
1250 on (amd64/i386/ia64)
1251 - mac leopard on i386
1252 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
1253 but nothing critical.
1254 * Other platforms: windows, AIX and others were not tested for this release
1256 Timing report of this version:
1257 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
1258 scenario parameters). From 8h to a few seconds in desktop grid settings.
1259 * Supernovae brings about 25% speedup on i386.
1261 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
1263 SimGrid (3.3.3) stable; urgency=low
1265 The "Need for Speed" release.
1267 The timings done to validate the 3.3.2 were faulty.
1268 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
1270 The problem was a conversion from a manually handled vector to
1271 xbt_dynar_t on the critical path.
1272 xbt_dynar_foreach calls functions, inducing stack management crap.
1274 We inlined these functions and xbt_dynar_foreach is now breath taking.
1275 We also inlined xbt_swag_belong on the way.
1277 Here are some approximate speedup measurements (on master/slaves
1278 simulations lasting between 10s and 20s each):
1279 3.3.1 -> 3.3.2: about same performance
1280 3.3.2 -> 3.3.3: 40% speedup
1281 3.3.1 -> 3.3.3: 40% speedup
1282 3.3.1 with inline patch -> 3.3.3: 30% speedup
1284 Our reading is that the refactoring which occurred in 3.3.2 made us
1285 suffer much more from the xbt_dynar_foreach low performance, but
1286 once we solved this, this refactoring proved to be very performance
1287 effective. From the 40% speedup, somehow, 10% are due to the
1288 inlining and 30% to the refactoring.
1290 That's a pitty that gcc cannot inline functions placed in other files
1291 alone. We have to choose between:
1292 - break the encapsulation (by putting private data structures and
1293 accessors in headers files to help gcc)
1294 - live with low performance
1295 - switch to a decent compiler such as icc (not quite possible).
1297 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
1299 SimGrid (3.3.2) stable; urgency=low
1301 The "Simplicity does not preceed complexity, but follows it" release.
1303 The main contributors of this release were (lexical order):
1304 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
1307 * Extract the routing logic into its own object.
1308 (was dupplicated in network.c and workstation_LV07.c;
1309 Allows to implement other ways of storing that info)
1310 => kill now useless network_card concept
1311 - Use dynar to represent routes (instead of void** + int*)
1312 - kill link_set (use surf_network_model->resource_set instead)
1313 - Add a command-line option to choose the routing schema to use
1314 - Add three new models:
1315 * Floyd (shortest path computed at initialization)
1316 * Dijikstra (shortest path recomputed all the time)
1317 * Cached Dijikstra (shortest path computed on need)
1318 All these models where contributed by Silas De Munck, and are
1319 described in his ICCS09 paper.
1321 * Simplify model declaration
1322 (less redirections, less function to write when defining a model)
1323 - Factorize stuff between models:
1326 surf_model_resource_set(model)
1327 surf_model_resource_by_name(model, name)
1328 - Unify the types of models in s_surf_model_t (using an union)
1329 - Embeed fields of common_public directly into s_surf_model_t
1330 - Rename model methods:
1331 action_free ~> action_unref
1332 action_change_state ~> action_state_set
1333 action_get_state ~> action_state_get
1334 - Change model methods into functions :
1335 (model)->common_public->action_use ~> surf_action_ref
1337 * Implement a generic resource; use it as ancestor to specific ones
1338 (allows to kill duplicated code in models)
1339 Drawback: timer command don't need no name nor properties;
1340 workstation_CLM03 don't need no properties
1341 (but I guess we can live with those few bytes wasted)
1343 * Improve the action object model
1344 - implement a constructor avoiding dupplicated code about field
1345 initialization in generic_action part.
1347 * Kill the SDP model: it has an external dependency, is deprecated
1348 in flavor of modern lmm models, and didn't compile since a while
1351 * Relocation of the context module from XBT to SIMIX.
1352 (the context were decoupled from the simix processes, duplicating a lot of code)
1353 => a lot of code was factorized
1354 - less overhead is introduced during scheduling
1355 - simpler API for the context factory
1356 - the logic for process creation,destruction and manipulation was simplified
1357 * Simplification of the s_smx_process_t data structure.
1358 => accesing the simix level data associated to a process is faster now,
1359 and the code is a lot more readable.
1362 * Implement some more MPI primitives:
1363 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
1364 -implementation: Bcast: flat or 2-ary tree (default),
1365 Barrier: 4-ary tree,
1367 Allreduce: Reduce then Bcast
1368 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
1369 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
1370 Alltoallv: flat tree, like ompi
1372 * Add support for optimized collectives (Bcast is now binomial by default)
1373 * Port smpirun and smpicc to OS X
1376 * Kill SD_link_get_properties: hard to maintain and makes very little sense
1377 Shout out if you used it.
1380 * Display the list of still queued messages in SG mode when existing
1384 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
1385 * Add xbt_graph_node_get_outedges() [Silas De Munck]
1386 * Add xbt_str_from_file(FILE*)
1387 * Add xbt_dict_get_key achieving a linear reverse search
1388 * Remove the context module
1390 Portability report of this version:
1391 * Main portability targets:
1392 - Linux(debian)/x86/context
1393 - Linux(debian)/x86/pthreads
1394 - Linux(debian)/amd64/context
1395 - Linux(debian)/amd64/pthreads
1396 On these, we still have the eratic breakages of gras/pmm and
1397 amok/saturate_sg reported in previous version. We still think
1398 that the tests are the cause of the fault, not the tested code.
1400 - Mac OSX Leopard/x86/context
1401 Still false negative in tesh autotesting.
1402 Smpi still fails, but this time because readlink does not accept -f
1403 Everything seems to work properly beside of that.
1406 - AIX version 5.3 (only tested contexts this time)
1407 Smpi still fails there because mktemp is not installed.
1408 Everything seems to work properly beside of that.
1410 I managed to compile it for the first time, but several breakages.
1411 Won't delay the release for this exotic platform.
1413 * Windows: it's still lagging behind. If you want to help, please
1416 Timing report of this version:
1417 This version seem to be more than 5% faster than 3.3.1 (on linux
1418 64bits with contextes). The gain is less than expected, we are
1419 investigating this for next release.
1421 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
1423 SimGrid (3.3.1) stable; urgency=low
1426 * Implement a --cfg-help to show existing configuration variables
1427 * Build chain do not require doxygen in maintainer mode
1430 * fix a bug on struct sizeof computation, which prevented the
1431 exchange of arrays of structs in some conditions
1432 - added a regression test about this in datadesc_usage
1433 * Allow the exchange of 0-long dynamic vectors.
1434 - for that, use -1 as indicator of dynamic size instead of 0
1435 - This implied to change any size from unsigned long to long,
1436 reducing a bit communication abilities, but I guess that with
1437 64bits being quite common, this is more than enough.
1438 - This also induce a protocol change, thus bumping network protocol
1439 version from 0 to 1 (if we have external users, we have to get
1440 clean on that point too ;)
1441 - added two regression tests about this in datadesc_usage
1442 * Be more verbose when propagating local exceptions
1443 This helps debugging.
1444 * Display the status of simulated processes when receiving SIGINT in
1448 * Allow to control the simulation from a trace file.
1449 New functions MSG_action_register() and MSG_action_trace_run()
1450 The first one allows to associate a function execution to each
1451 kind of action while the second one parses a trace file and
1452 triggers the corresponding actions within the system.
1453 For now, only a toy example is provided in examples/msg/actions
1454 * Add an exemple of process migration in examples/msg/migration
1455 * Fix a bug in task exchange which broke MSG_task_get_sender()
1456 Add a teshsuite regression test for that.
1457 [Bug: if MSG_task_get_sender() is called after sender exit,
1459 * Fix a bug which prevented suspend/resume to work properly
1460 * Display the status of simulated processes when receiving SIGINT
1461 This fixes a regression of v3.3. due to the introduction of SIMIX
1462 * Bug fixing in failure management:
1463 - trace could not start by a failure at time 0
1464 - failure during communications were not working
1467 * Add SIMIX_process_set_name() to change the name of the current
1468 process in the log messages.
1469 * Store smx_hosts in a dict since we only retrieve them by name
1470 * Move the configuration infrastructure to surf
1473 * Move the configuration infrastructure to surf
1476 * Massive internal cleanups:
1477 - Store internal structures on processes instead of hosts (allows
1478 to have more than one process per host, in addition of being more
1480 - Cleanup the initialization/finalization process
1481 - Kill a whole bunch of unneeded synchronization:
1482 processes run in exclusive manner within the simulator
1483 - Move queues from global tables to process data fields
1485 - now accept -platform and -hostfile arguments
1486 - Pass the right rank value to processes according to the hostfile
1487 * Compile the examples by default, and use them as regression tests
1488 * Implement MPI_Wtime()
1489 * Change the reference speed to a command line option
1492 * TCP_gamma can now be specified as command line option using
1493 --cfg=TCP_gamma:10000000.0
1494 * Change the --surf-path cmd line option into --cfg=path:
1497 * Also include strbuff from xbt.h public header
1498 * xbt_ex_display(): do not free the exception after displaying
1499 This allows to do more with the given exception afterward.
1500 Users should call xbt_ex_free() themselves.
1504 Portability report of this version:
1505 * Main portability targets:
1506 - Linux(debian)/x86/context
1507 - Linux(debian)/x86/pthreads
1508 - Linux(debian)/amd64/context
1509 - Linux(debian)/amd64/pthreads
1510 These targets fail about 1/10 of times on gras/pmm, but we believe
1511 that this is because of the test, not because of simgrid.
1512 amok/saturate_sg fails even more rarely, and the test may not be
1515 - Mac OSX Leopard/x86/context
1516 The test suite still spits tons of errors because some obscure
1517 force prevents us from removing the temporary directories
1518 arguing that they still contain some metadata I've never heard of.
1519 Smpi fails because seq is not installed.
1520 Everything seems to work properly beside of that.
1523 - AIX version 5.3 (both contexts and pthread)
1524 Smpi still fails there because mktemp is not installed.
1525 XML inclusions seems rosty on AIX.
1527 * Windows: it's still lagging behind. If you want to help, please
1530 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
1532 SimGrid (3.3) stable; urgency=high
1536 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
1537 [Malek Cherier & Mt]
1539 * Introduce the SIMIX module: factorize code between MSG and GRAS.
1542 Until now, GRAS were using MSG as an interface to SURF. It was
1543 quite difficult because both interface have several differences
1544 (MSG channels vs GRAS sockets were the most notable point).
1546 This also opens the gate to SMPI (which should occur soon) and speed
1547 up simulations by to 40% (even if it were not the main goal).
1549 **************************************
1550 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
1551 **************************************
1552 The point is that events occuring at the exact same timestamp are
1553 not scheduled in the same order with the old and new version. This
1554 may be enough to completely change the execution of simulations in
1555 some cases. Sorry for the inconvenience.
1557 * Cleanup and upgrade the XML format to push further scalability
1558 issues (check http://hal.inria.fr/inria-00256883/ for more info)
1560 * Improve the testing infrastructure with tesh. Now a very large part of
1561 the code is tested not only by being run but also by checking that the
1562 output match an expected output [Mt].
1564 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
1565 is really less memory-demanding, which should allow you to use
1566 larger files in SimGrid [AL].
1568 * Inform valgrind about our contextes, so that it becomes usable
1569 with the default (and more effecient) version of SimGrid
1570 [contributed by Sékou Diakite, many thanks]
1573 * Introduce a listener thread in charge of receiving incoming
1574 messages from the network. It allows to overlap communication and
1575 computation but most notably, it removes some stupid deadlocks due
1576 to the fact that so far, a process could not send and receive at
1577 the same time. This made most non trivial communication schema
1579 * Convert the PIDs from long int to int to match the MSG ones (and
1580 linux ones too) [Mt]
1581 * New function: gras_agent_spawn() to launch a new process on
1582 current host. Only working in simulation for now. [Mt]
1583 * New function: gras_os_hostport() returning a constant form (ie,
1584 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
1587 * Make the backtrace of exceptions more human readable [Mt]
1588 * New module: xbt/str [Mt]
1589 a ton of string utility functions (split, join, printf to a newly
1590 allocated buffer, trim, etc)
1591 * New module: xbt/hash [Mt]
1592 SHA1 hashing algorithm (more to come if needed)
1593 * New module: xbt/synchro [Mt]
1594 synchronization tools (mutex and conditions) working the same way
1595 in simulation and in real life (mainly useful for GRAS, but not
1597 * New module: xbt/queue [Mt]
1598 classical producer/consumer synchronization scheme
1599 * xbt_dynar_new_sync() creates a synchronized dynar. All access
1600 (using the classical functions will get serialized) [Mt]
1601 * Make dictionary internal table dynamic. No need to specify its size
1602 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
1604 * Make sure the log channels are organized as a tree under windows
1605 (because of ANSI C compatibility issue, any channel were child of
1606 root directly) [Mt].
1609 * Cleaned many thing in surf and fixed a few bugs [AL].
1610 * Add a nice command line configuration mechanism to compose models [AL].
1611 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
1612 the previous one (KCCFLN05). It relies on something that looks like
1613 a max-min sharing mechanism but cannot be written as such. A new solver
1614 was thus designed [AL].
1615 * Add a new solver to lmm. Based on Lagrange optimization and
1616 gradient-based descent, it enables to efficiently maximise systems s.a
1618 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
1620 This solver enables to propose two new network models for TCP Reno and
1621 TCP Vegas based on Low's work. These models still need to be fully
1622 tested though [Pedro Velho].
1625 * Bug fix in SD_simulate. Now the time bound given as argument is
1627 * Use the new parallel task model (ptask_L07) as default.
1628 * Use the SURF command line configuration mechanism.
1629 * 0-size tasks (for synchronization) should now work.
1631 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
1633 SimGrid (3.2) stable; urgency=high
1637 We still experience issues on this platform, but we believe that at
1638 least MSG is usable.
1640 GRAS API BREAKAGE (for simplification purpose, sorry):
1641 * the gras_msgtype_by_name is not used anymore. Instead of
1642 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
1643 you can write (and must)
1644 gras_msg_send(toserver, "request", &request);
1645 - If you still want to pass a gras_msgtype_t to the function (to cache
1646 the type and avoid the lookup time), use the gras_msg_send_() variant.
1647 - Impacted functions:
1648 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
1649 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
1650 * The callbacks are now expected to return 0 when everything went well
1651 (just like the main() function)
1653 GRAS new features and improvements:
1654 * New module mecanism where user code can use per process globals [Mt]
1655 This is similar to gras_userdata_*() functions, but for libraries. It
1656 factorize some code developped over and over in the examples and AMOK.
1657 It has still to be documented and used (only amok/peermanagement is
1659 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
1660 loss when they were small enough to fit into the buffer and sent quickly
1661 enough so that they can all get received in one shoot.
1662 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
1663 if not found. Use the *_or_null() variant for the old semantic.
1664 * In gras_msg_handle, do not discard messages without callback.
1665 They are probably messages to be explicitly awaited later (ie, proofs of
1666 mis-synchronization in userland since they are sent before being awaited)
1667 No big deal usually.
1668 * gras_socket_meas_send/recv: semantic changed!
1669 The numerical arguments used to be (1) the total amount of data to send
1670 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
1671 messages. This was need for the fool willing to send more than MAXINT
1672 bytes on quite fat pipes.
1675 * Do really rename the hostmanagement module to peermanagement. [Mt]
1676 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
1677 but this is rather new and this was documented in the module
1678 documentation (poor excuses, I admit)
1679 * Bandwidth measurement semantic changed! This follows the changes to
1680 gras_socket_meas_send/recv explained above.
1683 * A sequential mode has been added to the workstations. When a workstation
1684 is in sequential mode, it can execute only one task, and the other tasks
1685 are waiting in a FIFO. [Christophe Thiery]
1688 * The KCCFLN05 workstation model now handles parallel tasks. It is the
1689 model for SIMDAG. [Christophe Thiery]
1690 * Bug fix in the maxmin solver: Some values were close to 0 instead of
1691 equal to 0, which caused some bad behaviors in
1692 saturated_constraint_set_update. I now use a threshold mechanism like in
1696 * When running manually src/testall, you select specific units [Mt]
1697 testall is the result of our cunit mecanism, and should replace all
1698 the scripty thingy around since bash don't run easily on billware.
1700 * A mallocator system has been added. [Christophe Thiery]
1701 Mallocators allow you to recycle your unused objects instead of freeing them
1702 and allocating new ones.
1704 Documentation update:
1705 * FAQ reworking + New FAQs:
1706 - "Valgrind spits tons of errors!" [Mt]
1707 - "How to repport bugs" [Mt]
1708 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
1709 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
1710 - Communication time measurement within MSG [AL]
1711 - I experience weird communication times when I change the latency [AL]
1712 * GRAS tutorial [Mt]
1714 - an introduction to the framework and to the used communication model
1715 - an initiatic tour introducing the most proheminent features:
1717 . Lesson 0: Installing GRAS
1718 . Lesson 1: Setting up your own project
1719 o Part 2: Message passing
1720 . Lesson 2: Exchanging simple messages
1721 . Lesson 3: Passing arguments to the processes (in SG)
1722 . Lesson 4: Attaching callbacks to messages
1723 . Lesson 5: Using globals in processes
1724 . Lesson 6: Logging informations properly
1725 . Lesson 7: Using internal timers
1726 . Lesson 8: Handling errors through exceptions
1727 . Lesson 9: Exchanging simple data
1728 . Lesson 10: Remote Procedure Calling (RPC)
1729 . Lesson 11: Explicitely waiting for messages
1730 . Recapping of message passing features in GRAS
1731 - A HOWTO section containing:
1732 o HOWTO design a GRAS application
1733 More are due, of course. They will come latter. In the meanwhile, you can
1734 check the examples which are still here.
1736 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
1738 SimGrid (3.1) stable; urgency=high
1742 There was a stack corruption somewhere, visible only when optimizing
1743 with these versions. [Vince]
1746 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
1747 module that enabled to play with Directed Acyclic Graphs. It is built
1748 directly on top of SURF and provides an API rather close to the old
1749 SG. Some old codes using SG are currently under rewrite to check that
1750 all needful functions are provided. [Christophe Thiery]
1753 * Complete rewrite of the KCCFLN05 workstation model. It is now an
1754 extension of the classical CLM03 model that gracefully handles
1755 failures. This is now the default model for MSG and GRAS. It doesn't
1756 handle parallel tasks yet though. [AL]
1757 * Bug fix: Weights were not correctly set in the network part.
1758 WARNING: This may have resulted in incorrect results with simulations
1759 where there are more than one flow on a given link. [AL]
1762 * After a (long ?) discussion on simgrid-devel, we have decided that the
1763 convention we had on units was stupid. That is why it has been decided
1764 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
1765 WARNING : This means that all previous platform files will not work as
1766 such with this version! A warning is issued to ask users to update
1768 A conversion script can be found in the contrib module of the CVS, under
1769 the name contrib/platform_generation/surfxml_update.pl [MQ]
1772 * Bug fix: Processes were started in reverse order, wrt deployment file.
1773 WARNING: if your code relies on this bug, please fix it. [AL]
1774 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
1775 being executed on two different locations. [AL]
1776 * Bug fix: Failures are now better supported thanks to Derrick's tests
1777 (there was many failure situations I hadn't thought of and that weren't
1778 correctly handled). [AL]
1779 * New function: MSG_host_is_avail indicates you whether a given m_host_t
1783 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
1784 Exception occurring on server-side are propagated back to client (!).
1786 API CHANGE: the callback changed their prototype. Change:
1787 int my_handler(gras_socket_t expeditor, void *payload_data) {
1789 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
1790 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
1792 * New! function: gras_msg_handleall to deal with all messages arriving
1793 within a given period.
1794 * New! function: gras_socket_server_range to get a server socket in a
1795 range of port numbers (ease to avoid port number conflicts) [MQ]
1796 * New! gras processes display their backtrace when they get a SIGUSR1
1797 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
1798 Sweet to debug RL processes [MQ]
1802 - Do not force experiment sizes to be expressed in kb, or it becomes
1803 impossible to measure the latency this way (needs one byte-long tests)
1804 WARNING: this changes the amok_bw_* function semantic. [MQ]
1805 - Implements the link saturation stuff. [MQ]
1806 * Peer management module:
1807 New! module factorizing code that we wrote over and over [MQ].
1810 * New module: cunit (my jUnit implementation in ansi C) [MQ]
1811 - Test units are placed directly into the library code, they get extracted
1812 automatically and placed into the src/testall binary.
1813 - Convert most of the XBT tests to this system.
1814 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
1815 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
1816 live in the same C code. This required to change a little bit the API
1817 of surfxml parsing but shouldn't be an issue for end-users. [AL]
1818 * New module: sparse graph structure with basic algorithms (this is work
1819 in progress and the API is not considered to be frozen yet). [AL]
1820 * Display more information on backtraces: source line & function names are
1821 now displayed just like valgrind does (rely on addr2line tool) [MQ]
1822 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
1823 * Reworked a little bit some #include statements to load only required
1824 headers. Some user code that relied on SimGrid to include stdlib or
1825 stdio may need to include it by themselves. [AL]
1826 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
1828 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
1829 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
1830 but I guess that almost nobody used those parts. [MQ]
1832 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
1834 SimGrid (3.0.1) stable; urgency=low
1837 * Unfortunately, I had missed 5 misnamed functions:
1838 xbt_fifo_item_t xbt_fifo_newitem(void);
1839 void xbt_fifo_freeitem(xbt_fifo_item_t);
1840 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
1841 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
1842 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
1843 They're now deprecated. Please use their new versions:
1844 xbt_fifo_item_t xbt_fifo_new_item(void);
1845 void xbt_fifo_free_item(xbt_fifo_item_t);
1846 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
1847 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
1848 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
1850 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
1851 * Documentation: xbt_log module unmercifully reworked [MQ]
1852 * Bugfix: there was a problem with the ending of contexts with
1853 the pthread backend. It caused some weird deadlock or behavior
1854 depending on the pthread implementation. [AL]
1855 * Bugfix: get the exceptions raised in the simulator repport where
1856 and why they come from when they are not catched in time [AL, MQ]
1859 * Bugfix: Do repport the error when two non-connected hosts try to
1860 exchange data (Thanks to Flavien for stumbling into this one) [AL]
1863 * Add additionnal checkings on communications. Assert that two
1864 communicating hosts are connected by a set of links... [AL]
1867 * Add additionnal checkings on channel values in communication [AL]
1868 * New: MSG_task_get_source to see on which host a task was generated [HC]
1869 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
1870 the number of tasks waiting to be received on channel and sent
1872 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
1873 waits for the first task coming from a given host.. [AL]
1875 GRAS new functionnalities: [MQ]
1876 * Enhance the parsing macro to allow the size of multidimentional objects
1877 to be given thru annotations.
1878 * New example (and documentation): Matrix Multiplication a la RPC
1879 (as when I was young!) and fix a bunch of bugs found on the way.
1881 GRAS performance improvements: [MQ]
1883 * Reduce the amount of cbps creation/destruction by making it static to
1884 datadesc_send/recv() and using a (newly created) cbps_reset (based on
1887 * Change libdata to a set so that we can search for stuff by ID (and thus
1888 reduce the insane amount of dict lookups)
1891 * Actually implement gras_datadesc_copy() so that we don't have to mimick
1892 RL communication on top of SG since it's so uneffective.
1893 It may also be used for inter-thread communication in RL, one day.
1894 * Use gras_datadesc_copy() to exchange messages on top of SG
1896 - improve message exchange performance on top of SG
1897 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
1898 * Don't exchange on the network the size of the used part of buffer,
1899 instead, specify the possible buffer size to read().
1901 - reduces the amount of read/write calls (one pair per exchange)
1902 - reduces the amount of exchanged data (the size)
1903 - allows to retrieve all arrived data on receiver side, if we don't need
1904 it right now (subsequent read will peek the buffer)
1905 - allows the receiver to proceed with the begining of the stream before
1906 everything is arrived
1907 - make it possible to build an iov transport (using readv/writev)
1909 - take care of the data with non-stable storage (like stacked data),
1911 * If possible, TCP send uses vector I/O (when writev() is here)
1912 - Don't use it for receive since we send data sizes and data on the
1913 same stream, so we wouldn't be able to chain large amount of chunks
1914 before having to flush the stuff to read the size.
1915 * Rework the transport plugin mecanism to simplify it and reduce the
1916 amount of pointer dereferencement when searching for the right function
1919 * I guess that now, we do almost as few system calls as possible while
1920 doing as few data copy as possible.
1922 To improve it further, we could try to send all the sizes first and then
1923 all the data (to use iov on receiving size), but it's only a partial
1924 solution: when you have 2 dimensional data, the sizes of the second
1925 dimension is data of the first dimension, so you need 3 streams.
1927 I'm not sure the potential performance gains justify the coding burden.
1929 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
1931 SimGrid (3.00) stable; urgency=high
1934 * New! Give the possibility to hijack the surf parser and thus bypass
1935 MSG_create_environment and MSG_launch_application. Have a look at
1936 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
1938 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
1940 SimGrid (2.96) unstable; urgency=low
1945 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
1946 This deprecates the xbt_error_t mecanisms.
1947 It modifies (simplifies) all XBT and GRAS API.
1948 MSG API keeps unchanged (exceptions raised by XBT are catched from
1949 within MSG and masked with existing error handling facilities)
1952 * New! Add a FATPIPE model. [AL]
1953 * New! Add a parallel task model. [AL]
1954 * New! Add automatically a loopback interface (in the default
1955 network model) if none was precised.
1958 * Bugfix: MSG_process_resume now works with the current running process.
1960 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
1961 * Modification of MSG_task_get_compute_duration. Once a task has been
1962 processed, the value returned by this function is now equal to 0. [AL]
1963 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
1964 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
1965 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
1966 of a m_task. For now, MSG_task_cancel only works with computation
1968 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
1969 of the processor (in Mflop/s) regardless of the current load on the
1971 * API Change: use proper naming convention for MSG_getClock and
1972 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
1974 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
1975 This function changes the priority of a computation task. This priority
1976 doesn't affect the transfer rate. A priority of 2 will make a task
1977 receive two times more cpu power than the other ones. This function
1978 has been added to suit the needs of Nguyen The Loc and hasn't been that
1979 much tested yet. So if it fails, please report it and send me your code.
1981 * API Change: removed all functions and types that were marked "deprecated"
1982 since many months. Renamed MSG_global_init_args to MSG_global_init.
1984 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
1986 SimGrid (2.95) unstable; urgency=low
1989 * Steal some nice code to GNU pth to fix context detection and usage [AL]
1990 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
1991 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
1994 * Bugfix: Allow absolute paths for platform description files [MQ]
1995 * Bugfix: do free the variables after use. Leads to drastic performance
1997 * Implement max_duration (ie, timeouts) on resources [AL]
2000 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
2002 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
2003 the needed support (timeouts) [AL]
2006 * Implement measurement sockets. You can now get the bandwidth between two
2007 hosts thanks to AMOK (see below). [MQ]
2008 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
2009 dynar over the network (yeah) [MQ]
2010 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
2011 * simple/static token-ring example. [Alexandre Colucci and MQ]
2012 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
2013 in place before [MQ]
2016 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
2017 type parsing. "short" and "long" modifiers were also ignored; other
2018 modifier (such as reference level) are still ignored. [MQ]
2019 * Embeed the buffer size within the buffer itself on SG. [MQ]
2020 That way, send() are atomic and cannot get intermixed anymore (at least
2021 the ones which are less than 100k; bigger messages still have the issue)
2022 * Array size pushed by the field, not by the field type (or each
2023 and every long int will push stuff to the cbps) [MQ]
2024 * use select() to sleep since it allows to portably sleep less than one
2027 GRAS (minor cleanups)
2028 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
2031 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
2032 * type category 'ignored' killed as it was never used and were difficult
2034 * whether a type can cycle or not is now a flag, leaving room for more
2035 flags (as "ignored", if we feel the need one day ;)
2036 * Rename raw sockets to measurement sockets since "raw" has another
2037 meaning in networking community.
2040 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
2041 and offers features not belonging to GRAS but that most applications
2042 need. One day, it may be a set of plugins loadable at runtime.
2043 * New module: bandwidth
2044 bandwidth measurement between arbitrary nodes running this module. [MQ]
2046 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
2048 SimGrid (2.94) unstable; urgency=low
2050 The first beta release of SimGrid 3 !
2054 * Update the main page and the FAQ. Adding references to gforge.
2057 * Add a gras_os_getpid function.
2060 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
2061 * Extend the logs so that they also print PID, hostname, date, ... if
2063 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
2064 and kill the old version which were in testsuite/
2065 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
2069 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
2070 for users. Instead, each programming environment (GRAS, MSG,...) use it
2071 when needed to provide such a feature to users.
2072 Don't shortcut the mecanism or you will also shortcut the virtualization
2073 you need on the simulator.
2077 * Cleanups in configury with regard to compile optimization/warning flags.
2078 Also add -fno-loop-optimize to any powerpc since it's the optimization
2079 killing gcc (< 3.4.0).
2080 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
2081 needed by MSG examples complications
2082 * Borrow configury beautifications from PHP
2085 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
2086 warning (thanks loris for stumbling into this one).
2087 * Bugfix: stop loading private headers (gras_config.h) from the public
2091 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
2092 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
2093 RL would imply a DNS resolver, which is *hard* to do in a portable way
2094 (and therefore delayed).
2095 * Implement a real timer mecanism and use it in timing macros. This allows
2096 to avoid rounding errors and get a 0.000005 sec precision in timing
2097 macros. While I was at it, various cleanups:
2098 - allow to declare more than one timed section per file (fix a stupid bug)
2099 - move some private declaration to the right place
2100 - merge conditional execution and timing macros into emulation module
2101 - document the module
2102 - make sure the module cleanups its mess on gras_exit
2103 * Documentation improvements:
2104 - (new) how to compile applications using GRAS
2105 - (new) emulation support (timing macros)
2107 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
2109 SimGrid (2.93) unstable; urgency=low
2111 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
2114 - Use Paje properly where used. Still to be sanitized properly.
2115 - Portability fix: Add an implementation of the contexts using pthread
2119 - Add xbt_procname(): returns the name of the current process.
2120 Use it to show the current process's name in all logging.
2122 - fix detection of older flex version and the reaction, since we do
2123 depend on modern ones (we use lex_destroy)
2124 - Better separation of SG and RL in the libs: remove all simulation code
2125 from libgras. As a result, this lib is now only 200k when stripped.
2126 Some of the xbt modules may also be duplicated (two sets and such) and
2127 should be cleaned/killed before SG3.
2128 - Insist on using xlC on AIX because of weird problems involving gcc there.
2129 - Cleanup the make remote stuff. This is now done by scripts
2130 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
2131 mainly for our private use, but we're working on changing them to user
2134 - Bugfix: flush the socket on close only if there is some *output*.
2135 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
2137 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
2140 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
2142 SimGrid (2.92) unstable; urgency=low
2144 Alpha 3 on the path to SimGrid 3
2148 - New! First try of benchmarking macros.
2149 - New! First try so that gras_stub_generator generate deployment and
2150 remote compilation helpers.
2152 - Bugfix: Initialization fix in msg_test.
2156 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
2158 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
2160 - API Change: gras_os_sleep to take the amount of seconds as a double.
2161 Accepting an int was error prone since it was the only location where
2162 seconds were coded as such. It leaded to damn rounding errors.
2163 - Bugfix: Hard to belive that timers ever worked before this.
2165 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
2167 SimGrid (2.91) unstable; urgency=low
2169 Alpha 2 on the path to SimGrid 3
2173 - Bug fix in the lmm_solver.
2175 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
2176 through the function MSG_paje_output.
2177 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
2178 - It is possible to bound the rate of a communication in MSG with
2179 MSG_task_put_bounded() (was already in the previous version but I had forgotten
2180 to write it in the changelog).
2181 - Bug fix to let GRAS run on top of MSG until we move it directly on top
2186 - Various cleanups to the autotools stuff
2187 - Begin to move Gras examples to examples/gras/
2188 - Let make distcheck work again (yeah!)
2190 - documentation overhauled using doxygen.
2191 gtk-doc-tools is dead in SimGrid now.
2192 - Automatically extract all existing logging categories, and add the list
2193 to the documentation (long standing one, to say the less)
2195 - Cleanup the known architecture table. Reorder the entries to group what
2196 should be, and use a more consistent naming scheme.
2197 (some of the test dataset are still to be regenerated)
2198 - New! Allow library to register globals on each process just as userdata
2200 This is implemented using a xbt_dict and not a xbt_set, so we loose the
2201 lookup time (for now).
2202 Use it in msg and trp.
2203 This cleans a lot the internals and helps enforcing privacy of the
2204 headers between the gras components.
2205 - New! Add a timer mechanism, not unlike cron(8) and at(1).
2206 - Bugfix: gras_os_time was delirious in RL.
2207 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
2209 - Reenable GRAS now that it works.
2211 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
2213 SimGrid (2.90) unstable; urgency=low
2215 Alpha 1 on the path to SimGrid 3
2217 * It is a long time since the last release of SimGrid. I'm sorry about
2218 that but as I had told you, I was rewriting a lot of things. I apologize
2219 to those who had been reporting bugs to me and that I had not answered.
2220 If your bug is still in the new version, please tell me. Here is a
2221 summary of the main changes.
2223 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
2224 lead by Martin Quinson. As a consequence SimGrid gains a lot in
2225 portability, speed, and a lot more but you'll figure it out later.
2226 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
2227 I wanted to release the new MSG as soon as possible and I have
2228 broken GRAS, which is the reason why, for now, only MSG is fully
2229 functional. A laconic description of these projects is available
2230 in the documentation.
2232 * REVOLUTION 2: I have removed SG and I am now using a new simulation
2233 kernel optimized for our needs (called SURF but only the developers
2234 should use it). Hence, MSG is now roughly 30 times faster and I think
2235 that by rewriting a little bit MSG, I could event speed it up a little
2236 bit more. Beside the gain in speed, it is also much easier to encode a
2237 new platform model with SURF than it was with SG. More to come...
2239 * REVOLUTION 3: I have tried to change a little as possible the API of
2240 MSG but a few things really had to disappear. The main differences
2241 with the previous version are :
2242 1) no more m_links_t and the corresponding functions. Platforms are
2243 directly read from a XML description and cannot be hard-coded
2244 anymore. The same format is used for application deployment
2245 description. The new format is described in the documentation.
2246 Have a look in tools/platform_generation. There is a tiny script
2247 that converts from the old platform format to the new one. Concerning
2248 the application deployment format, parsing the old one is tricky.
2249 I think most of you should however be able to convert your files. If
2250 it is really an issue, I can write a C code that does the conversion.
2252 2) the toolbox tbx does not exist anymore. We now have a library
2253 with much more data-structures but without the hash-tables (we have
2254 dictionaries that are much faster).
2256 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
2258 *****************************************************************************
2259 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
2260 * don't feel like converting the oldies. (Mt) *
2261 *****************************************************************************
2264 Version 2.90: "the long awaited one"
2265 - Finished rewriting and debugging MSG. Rewrote the documentation.
2266 - disable GRAS for now since it needs to be ported to the newest SG
2269 - Finish the port to windows (using mingw32 for cross-compile)
2272 - Main loop and datastructures of SURF. A cpu resource object is
2273 functional. Surf can thus be used to create cpu's with variable
2274 performance on which you can execute some actions.
2276 2004-11-15 Martin Quinson
2277 - Port to ARM. Simply added the alignment and size descriptions. Should
2278 work, but the ARM machines are so slow that I didn't had the opportunity
2279 to 'make check' over there yet.
2281 2004-11-15 Arnaud Legrand
2282 - Trace manager now written. It uses a heap structure and is therefore
2283 expected to be efficient. It may however be speeded up (particularly
2284 when many events occur at the same date) by using red and black
2285 trees. One day maybe...
2286 - Max-min linear system solver written. It uses a sparse matrix
2287 structure taking advantage of its expected use. Most operations are
2288 O(1) and free/calloc are called as few as possible. The computation of
2289 the minimum could however be improved by using a red and black tree
2292 2004-11-03 Arnaud Legrand
2293 - Rename every gras_* function that was in xbt/ to its xbt_
2295 - Add a heap and a doubly-linked list to xbt
2296 - Added a dichotomy to the dictionaries. make check works as well before
2297 so I assume that the patch is correct. I do not know however if things
2298 run effectively faster than before now. :)
2300 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
2301 SimGrid, and the version number is bumped to 2.x
2303 2004-10-29 Martin Quinson
2304 - Introduction of the remote errors.
2305 They are the result of a RMI/RPC on the remote machine.
2306 ErrCodes being scalar values, you can't get the host on which those
2307 errors did happen. Extending the error mechanism as in Gnome is possible.
2308 No idea yet whether it is a good idea.
2310 2004-10-28 Martin Quinson
2311 - Interface revolution: the Starred Structure Eradication.
2312 I used to do typedef struct {} toto_t; and then handle *toto_t.
2313 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
2314 - ???_t is a valid type (builded with typedef)
2315 - s_toto_t is a structure (access to fields with .)
2316 - s_toto is a structure needing 'struct' keyword to be used
2317 - e_toto_t is an enum
2318 - toto_t is an 'object' (struct*)
2320 typedef struct s_toto {} s_toto_t, *toto_t;
2321 typedef enum {} e_toto_t;
2322 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
2323 s_toto_t) is private.
2325 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
2326 so that it can set the variable to NULL. It was so for dicts and sets,
2327 it changed for dynars.
2329 - Fix a bunch of memleaks in dict_remove
2330 - Fix a bug in sg/server_socket opening: it failed all the time.
2332 2004-10-07 Martin Quinson
2333 - Speed up dynar lookup operation a bit.
2335 gras_dynar_get is dead.
2337 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
2338 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
2339 (which gives you the address of the stored data).
2341 gras_dynar_get_as is an helpful macro which allows you to retrieve a
2342 copy of the data using an affectation to do the job and not a memcpy.
2344 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
2345 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
2347 It does not really speedup the dynar test because they are
2348 setting elements all the time (and look them seldom). But the dict does
2349 far more lookup than setting.
2351 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
2353 2004-10-05 Martin Quinson
2354 - Allow to (en/dis)able the cycle detection at run time.
2356 Whether we should check for cycle or not is now a property of each
2357 datatype. When you think there may be some cycle, use datadesc_cycle_set.
2358 datadesc_cycle_unset allow to remove this property when previously set.
2360 Note that the cycle detection is off by default since it impacts the
2361 performance. Watch the data you feed GRAS with ;)
2363 This property is hereditary. Any element embedded in a structure having it
2364 set have it set for the time of this data exchange.
2366 You should set it both on sender and receiver side. If you don't set it on
2367 sender side, it will enter an endless loop. If you forget on receiver
2368 side, the cycles won't be recreated after communication.
2370 - Header reorganization.
2371 Kill gras_private.h, each submodule must load the headers it needs.
2373 2004-10-04 Martin Quinson
2374 - Interface revolution: do not try to survive to malloc failure.
2376 Now, gras_malloc and friends call gras_abort() on failure.
2377 As a conclusion, malloc_error is not a valid error anymore, and all
2378 functions for which it was the only gras_error_t return value are
2379 changed. They now return void, or there result directly.
2380 This simplify the API a lot.
2382 2004-09-29 Martin Quinson
2383 - Re-enable raw sockets.
2384 Created by gras_socket_{client,server}_ext;
2385 Used with gras_raw_{send,recv}
2388 It should allow to kill the last bits of gras first version soon.
2390 This is not completely satisfactory yet (duplicate code with
2391 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
2394 - Simplify transport plugin (internal) interface by not passing any
2395 argument to _server and _client, but embedding them in the socket
2398 2004-09-28 Martin Quinson
2399 - Finish the port to AIX.
2400 autoconf was my problem (segfault within the malloc replacement
2401 function. No idea why)
2403 2004-09-16 Martin Quinson
2404 - Fix some size_t madness on 64bit architectures.
2406 2004-09-08 Martin Quinson
2407 - Reduce the number of system headers loaded, overload some more system
2408 calls (such as malloc to cast the result of the system one, and work
2410 - Fix and reintroduce the config support
2412 2004-09-07 Martin Quinson
2413 - Source code reorganization to allow Arnaud to surf all over there.
2414 - Allow to document the logging categories.
2415 - Remove all uppercase from logging categories and useless cleanup in names.
2417 2004-08-18 Martin Quinson
2418 Version 0.6.2 (protocol not changed; API changed)
2419 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
2420 gras_error_t), and NULL when not found. Functions expecting a msgtype
2421 as argument (msg_wait; msg_send) deal with NULL argument by providing a
2422 hopefully usefull message.
2423 - Portability to prehistoric sparcs again
2425 2004-08-17 Martin Quinson
2426 Version 0.6.1 (protocol not changed; ABI not changed)
2427 - prealloc some buffers to speed things up
2429 2004-08-11 Martin Quinson
2430 Version 0.6 (protocol not changed; ABI expended)
2431 - The parsing macro can deal with the references, provided that you add
2432 the relevant annotations (using GRAS_ANNOTE(size,field_name))
2434 2004-08-09 Martin Quinson
2435 Version 0.5 (protocol not changed; ABI changed)
2436 - Allow to off turn the cycle detection code in data exchange at
2437 compilation time. It should be at run time, but I'm short of time (and
2438 the config stuff is still broken). That way, we keep dict out of the
2439 critical path, which is good because the performance is poor:
2440 - search not dichotomial yet
2441 - dynar give no way to access their content and memcpy everytime
2442 - In composed data description (struct, ref and so on), stop foolness of
2443 keeping the subtype's ID, but store the type itself. This keeps sets out
2444 of the critical path, which is good since they rely on dynar and
2445 dictionnaries. The only loose of that is that we cannot detect the
2446 redeclaration of a structure/union with another content (but I'm not sure
2447 the code detected well this error before anyway). We still can detect
2448 the redefinition discrepancy for the other types.
2449 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
2450 it breaks the code because of type-punning used all over the place).
2451 This breaks on all non-gcc architectures (for now).
2453 All those changes (plus the buffer of last time) allow me to gain 2 order
2454 of magnitude on cruel tests consisting of 800000 array of integers on two
2455 level of a hierarchical structure (200 secondes -> 4 secondes)
2458 - the selector of reference must now return the type it points to, not
2459 the ID of this type.
2461 2004-08-06 Martin Quinson
2462 Version 0.4 (protocol changed; ABI not changed)
2463 - Allow to pass --gras-log argument to processes in simulation mode. Really.
2464 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
2465 - Implement a buffer transport, and use it by default (it relies on tcp in
2466 real life and on sg in simulation).
2467 That's a bit hackish since I had a new field to the structure to store
2468 its data without interfering with the subtype ones. Inheritance
2469 is tricky in C. And that's a kind of reverse inheritance with one class
2470 derivating two classes. Or maybe a game with java interfaces. Anyway,
2471 that's damn hard in C (at least).
2472 Moreover, I got tired while trying to ensure plugin separation and
2473 genericity in SG mode. MSG wants me to do weird things, so let's go for
2474 cruel hacks (temporarily of course ;).
2475 See comment in transport_private.h:71
2476 - do not include all the _interface headers in private but in the files
2477 which really need them (to cut the compilation time when they are
2480 2004-07-26 Martin Quinson
2481 Version 0.3 (protocol not changed; ABI changed)
2482 - Major overhault of the datadesc interface to simplify it:
2483 - shorted the function names:
2484 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
2485 - add a trivial way to push/pop integers into the cbps without malloc.
2486 This allows to make really generic sub_type description, which simply
2487 pop their size of the stack.
2488 - add a function gras_datadesc_ref_pop_arr() which does what users want
2489 most of the time: Declare a dynamic array (which pops its size of the
2490 stack) and declare a reference to it. Poor name, but anyway.
2491 - kill the post-send callback, add a post-receive one
2493 2004-07-23 Martin Quinson
2494 Version 0.2 (protocol changed; ABI changed)
2495 - add some testing for cpbs in the test cases, and fix some more bugs.
2496 This invalidate again the little64 data file, since I cannot regenerate
2498 - remove an awfull optimization in the logging stuff, allowing me to:
2499 - understand it again
2500 - learn gcc how to check that the argument match the provided format
2501 - fix all errors revealed by gcc after that
2502 - internal keys of dict are not \0 terminated. Deal with it properly in
2503 loggings instead of segfaulting when the user want to see the logs :-/
2505 2004-07-22 Martin Quinson
2506 - Fix some stupid bug preventing cbps (callback postit) from working
2508 2004-07-21 Martin Quinson
2509 - Some documentation cleanups
2510 - remove the useless last argument of msgtype_declare
2511 - rename the Virtu functions to fit into the 'os' namespace
2512 - move headers src/include -> src/include/gras/ and stop fooling with
2513 gras -> . symbolic link
2514 - make distcheck is now successful
2516 2004-07-19 Martin Quinson
2518 - Build shared library also
2519 - Install html doc to the right location
2520 - stop removing maintainer files in make clean
2521 - build tests only on make check
2523 2004-07-13 Martin Quinson
2525 - No major issue in previous version => change versionning schema
2526 - Re-enable little64 convertion test now that Abdou kindly regenerated the
2527 corresponding dataset.
2529 2004-07-11 Martin Quinson
2531 - Get it working with any kind of structure (we can compute the padding
2532 bytes remotely for all the architectures I have access to)
2533 - Implement the structure parsing macro (still not quite robust/complete)
2534 - Improvement to the remote testing toysuite
2536 2004-07-10 Martin Quinson
2537 [autoconf mechanism]
2538 - get ride of a bunch of deprecated macros
2539 - actually run the test for two-compliment, not only compile it :-/
2540 - test whether the structures get packed (and bail out if yes. Damn.
2541 Alignment is a serious matter)
2542 - test whether the structures get compacted (but respecting the alignment
2543 constraints of each types)
2544 - test whether the array fields of structures can straddle alignment boundaries
2546 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
2547 (took me 2 hours to find that bug, looking at the wrong place)
2548 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
2549 before sending/receiving and are used to compute the offsets of fields
2550 - Given that padding size depend even on compiler options, keep track of
2551 alignment and aligned_size only for the current architecture. Not a big
2552 deal since we send structure fields one after the other (seems
2554 - Add the datastructure used for IEEE paper by the PBIO guys to the test
2555 program, let it work on linux/gcc/little32. portability todo.
2557 2004-07-08 Martin Quinson
2558 - import and improve remote compilation support from FAST
2559 - make sure make check works on half a dozen of machines out there
2561 2004-07-07 Martin Quinson
2562 Let's say it's version 0.0.3 ;)
2563 - Implement conversions (yuhu!)
2564 - Let it work on solaris (beside conversion, of course)
2565 - Stupid me, using rand() to generate the conversion datatests in not wise.
2567 2004-07-06 Martin Quinson
2568 - Let make dist work, since I'm gonna need it to compile on remote hosts
2569 - Let Tests/datadesc_usage write the architecture on which the file was
2570 generated as first byte.
2571 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
2572 architecture descriptions.
2573 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
2574 on those architectures.
2575 - Optimization: send/recv array of scalar in one shoot
2577 2004-07-05 Martin Quinson
2578 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
2580 - Plug a whole bunch of memleaks
2581 - each process now have to call gras_{init,exit}. One day, their log
2582 settings will be separated
2583 - Continue the code factorisation between SG, RL and common in Transport.
2585 2004-07-04 Martin Quinson
2587 - Redistribution between SG and RL.
2588 We wanna have to accept in SG, so move accepted related parts of RL in
2589 the common part. (more precisely, the dynar of all known sockets is no
2590 more a static in transport.c, but part of the process_data)
2592 [gras_stub_generator]
2593 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
2595 2004-07-03 Martin Quinson
2596 - Create a new log channel tbx containing dict, set, log, dynar (to shut
2597 them all up in one shot)
2599 - Fix the ugly case of reference to dynamic array.
2600 - New (semi-public) function gras_datadesc_size to allow the messaging
2601 layer to malloc the needed space for the buffer.
2603 - gras_socket_close now expect the socket to close (and not its address to
2604 put NULL in it after it). This is because the socket passed to handlers
2605 is one of their argument (=> not writable).
2607 - propagate the interface cleanup from last week in datadesc, ie remove a
2608 superfluous level of indirection. User pass adress of variable
2609 containing data (both when sending and receiving), and not of a variable
2610 being a pointer to the data. Let's say that I like it better ;)
2611 The price for that is constructs like "int msg=*(int*)payload" in
2612 handlers, but it's a fine price, IMHO.
2614 - Let it work in RL (yuhu)
2616 2004-06-21 Martin Quinson
2618 - porting SG plugin and SG select to new standards (works almost).
2619 - plug memleaks and fix bugs around.
2622 - cleanup the prototype of data recv and force users to specify when they
2623 want to handle references to objects. Test case working even for cycles.
2624 - plug memleaks. Valgrind is perfectly ok with this.
2626 2004-06-12 Martin Quinson
2628 - cleanup the separation between plugin and main code in plugin creation
2630 2004-06-11 Martin Quinson
2632 - Reput hook for raw sockets, needed for BW experiments
2633 - kill a few lines of dead code
2634 [Data description] Interface cleanup
2635 - gras_datadesc_by_name returns the searched type or NULL.
2636 That way, no variable is needed to use a type desc once, which makes
2638 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
2639 two parameters were strings (field name, type name), leading to
2641 [Dicos] Interface cleanup
2642 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
2643 This is consistant with the dynar API.
2645 2004-04-21 Martin Quinson
2647 - Porting to new standards.
2649 - interface cleanup.
2650 There is no bag anymore, no need to take extra provision to mask the
2651 pointers behind "ID".
2652 Better splitup of functions between files create/exchange/convert.
2653 This is still a bit artificial since convert and receive are so
2654 interleaved, but anyway.
2656 - add a queued message list to procdata (the ones not matching criteria
2658 - factorize some more code between SG and RL wrt procdata
2660 - use gras_exit in example to track memleaks
2661 - get rid of gs_example now that GS is properly integrated into gras
2662 - update run_test to integrate the latest tests (datadesc)
2664 - rename WARNINGn macros to WARNn since it prooved error-prone
2666 2004-04-19 Martin Quinson
2668 - register init/exit functions within gras module mechanism
2669 - send/receive function.
2670 Convertion is not implemented, but short-cutted if not needed.
2671 struct/array elements are sent one by one (instead of block-wise), but
2672 nobody really cares (yet). Get a prototype before optimizing.
2673 - tests (using a file socket) for DD send/receive on:
2674 - base types: int, float
2675 - array: fixed size, string (ie ref to dynamic string)
2676 - structure: homogeneous, heterogeneous
2677 - chained list, graph with cycle
2678 Believe it or not, valgrind is not too unhappy with the results. The
2679 cycle happily segfaults, but the others are ok. And I'm sick of pointers
2683 - Bugfix when using a filename explicitely (instead of '-')
2685 2004-04-09 Martin Quinson
2687 - factorize more code between RL and SG in socket creation
2688 - Complete the implementation and tests of:
2690 o file (only in RL, and mainly for debugging)
2692 I lost 3 days to design a portable address resolver, and then decided
2693 that the prototype mainly have to run on my box.
2694 Addressing portability too early may be like optimizing too early :-/
2696 - use gras_init in the Tests instead of the crappy parse_log_opt
2697 (the latter function is removed)
2698 [Conditional execution]
2699 - New functions: gras_if_RL/gras_if_SG (basic support for this)
2700 [Code reorganisation]
2701 - Get rid of libgrasutils.a since it makes more trouble than it solves.
2702 Build examples against the RL library, since there is no way to disable
2703 its creation for now.
2705 For information, the beginning of coding on GRAS was back in june
2706 2003. I guess that every line has been rewritten at least twice since