1 SimGrid (3.4.1-svn) unstable; urgency=low
3 The "Polishing easter eggs is probably a good idea" release.
4 This is a bug fixes release only.
8 * Fix a bug preventing the tasks from begin garbage collected.
11 * Fix a bug occuring when a host involved in a communication fails.
12 This was not detected properly by the other peer involved in the
13 communication. Now, it's reported as a network error.
16 * Warn the user about loop dependencies in data flow of DAX files
17 * Obey the control-flow dependencies of DAX files
20 * Add option "enable_smpi" allowing to not compile SMPI.
21 Probably useful for the (Mac) users experiencing a build error here
22 * Improve the detection of lua5.1 and ruby1.8
24 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
26 SimGrid (3.4) stable; urgency=low
28 The "Easter in Cargese" release. Also known as (major changes):
30 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
31 ~> bindings were greatly improved
32 ~> new tracing infrastructure for better visualization introduced
34 * the "Welcome to configury modernity" release.
35 ~> we switched from autotools to cmake, and improved our cdash
38 A more detailled list of changes follow (full detail in svn log).
40 Java Bindings: Various Cleanups
41 * (install java-gcj-compat-dev on debian-like to use them)
42 * Remove put/get: no need to export deprecated interface in Java
43 Use send/receive instead.
44 * Cleanup the examples and add a README per directory
45 * Remove example autoDestination (that's the only way to go now)
46 * Remove example explicitDestination (was a plain copy of basic)
47 * Make JniException a runtime exception, so that there is no need to
48 declare the fact that you may encounter such a beast. I guess that
49 nobody will ever want to survive such error.
50 * Create specific errors for each MSG case of failure:
51 host failure, transfer failure, timeout, task cancelled
52 * Cleanup the exceptions that may get thrown by each function
53 * Other internal cleanups in Java bindings. Performance still bad :/
54 Ruby and Lua Bindings: create them
55 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
56 * That's new and great, you should try them out.
57 Same functionalities than Java bindings, only even less polished
59 * Kill the useless "rate" argument of SD_task_get_execution_time()
60 Everyone used to provide -1 as a value, it was not used, and the
61 semantic of a possible use wasn't even clear.
62 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
63 either as comm costs or compute costs to mean that there is no
64 such thing for that specific task.
65 * Add a SD_task_set_name() function
66 * Fix SD_task_unschedule() on typed tasks
67 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
68 * In DAX loader, accept useless 'level' attributes to <job> since
69 LIGO DAGs have them (seem to be to ease graphical representation).
71 * Add an example masterslave_mailbox.c using send/receive and not
72 the deprecated put/get interface.
73 * Kill the MSG_paje_output() function. It's a noop since 2 years.
74 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
76 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
77 (declare MSG_USE_DEPRECATED to still have the old name)
78 * Add a MSG_task_set_data() function
79 * About trace replay (see examples/msg/actions):
81 - Allow to work with splitted trace files for each process
82 Give the specific trace file as argument of each process,
83 and call MSG_action_trace_run(NULL)
84 You can still have one merged file for all processes.
85 - Fix implementation of collective operations
86 * Allow task_execute() on 0-sized tasks (closes #10063)
88 * This is the first release of SimGrid where SMPI is not considered
89 beta anymore (even if some corners should still be improved)
90 * Port over the new SIMIX_network submodule (internal refactoring)
91 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
92 * Implement more missing elements of the standard:
94 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
96 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
97 MPI_Scan() MPI_Get_processor_name()
98 - Added implementation of missing case for Alltoall (warning: it's
99 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
100 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
101 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
102 SMPI_MPI_Allgatherv()
104 - MPI_Waitsome() was broken
105 - Allow relative includes in smpicc
106 - Command line cfg argument 'reference_speed' was ignored...
107 - Some functions did not properly lead to auto-benching of user code
108 - smpicc passes -O2 by default (just like openmpi one)
110 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
111 * Bug fixes about timeouts during communications
112 * add SIMIX_message_sizes_output() as a pimple to write to file the
113 amount of messages per size. Use gnuplot to get histogram.
114 Pimple because that's the only user-visible function of simix,
115 defined directly in xbt.h (irk, sorry)
117 - Add a SIMIX_sem_get_capacity() function
118 - Fix interactions with processe resume/suspende
119 - release_forever() was stupidly broken
120 - Fix SIMIX_display_process_status() for processes in a semaphore
121 - Make SIMIX_sem_block_onto() user-visible
122 * Refactoring context stuff:
123 - Use pseudo-OOP for better modularity
124 - reimplement SIMIX_process_kill() without process_schedule() so
125 that the latter can take as invariant that it is called from
127 - Merge context_start into context_new for sake of simplicity
129 * Add a Vivaldi network model, coded live during SUD'10 ;)
130 * Rename configuration variables to start a hierarchy:
131 o cpu_model -> cpu/model
132 o network_model -> network/model
133 o workstation_model -> workstation/model
134 * New configuration variables:
135 o network/bandwidth_factor: correction to bandwith
136 o network/latency_factor: correction to latency
137 o netwotk/weight_S: correction to the weight of competing streams
138 * Add a long description to the models, that users can see with such
139 argument on the command line: --cfg=cpu/model:help
140 * --help-models display the long description of all known models
142 * config: add the ability to set a default value after registration
143 Does not override any previously set value (e.g. from cmd line)
144 * dict: allow to have integer key and data.
145 When so, you need to use the following functions
146 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
147 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
148 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
149 In contrary to regular dicts, the key is not malloced before copy.
150 Mixing scalar and regular elements in the same dict is not tested
152 * Allow to use xbt_dynar_shrink() to expend the dynar instead
153 Tracing for Visualization:
154 * SimGrid is now instrumented in order to generate a trace file for
155 visualization analysis: to use it, need to compile SimGrid with the
156 "tracing" option enabled, and instrument the program using SimGrid with
157 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
158 (among other functions).
159 * The instrumentation only traces the platform utilization for now
160 * Documentation to use the tracing functions and how to analyze the
161 traces with the Triva tool is written.
162 * More information about: SimGrid FAQ (in the section Tracing Simulations
165 * We moved to cmake as default build system. Autotools support will
166 be dropped soon. Check the FAQ for more info about how to use it.
167 * Greatly improved our cdash/ctest interactions
168 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
169 * Added memory checking tests with valgrind; lot of memleak fixing.
170 This may be the first release of simgrid with so few memory issues
171 * Added code coverage tests.
172 Our coverage is still improvable, but at least we see it on cdash.
174 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
176 SimGrid (3.3.4) stable; urgency=low
178 The "Desktop Grid needs love too" release (also called Xmas release).
181 * Major speedup in the maxmin system solving by using lazy evaluation
182 Instead of solving completely the maxmin system at each iteration,
183 only invalidate (and recompute) the modified parts.
184 This new feature is enabled in default models but you can try to
185 turn it on with "--cfg:maxmin-selective-update=1" for other models.
186 * Cas01 IMproved as default CPU model
187 This CPU model is the same Cas01 model, but it uses the
188 maxmin-selective-update flag and a heap structure to manage
189 actions on SURF kernel.
190 It reduces the complexity to find the next action to finish and,
191 consequently, it's faster than the old Cas01.
192 This is the new default CPU model (Cas01).
193 * Rename the old Cas01 model to Cas01_fullupdate
194 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
195 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
196 * CpuTI (CPU Trace Integration)
197 A new CPU model whose objective is simulate faster when using
198 availability trace files.
199 Instead of using a full featured, over engineered maxmin system for
200 CPU modeling, this model does the pre-integration of traces files
201 to calculate the amount of CPU power available, and so, executes
202 faster than the old CPU models.
203 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
204 * Use LV08 as default network model since it gives better accuracy
205 for small messages and shouldn't change things for big ones.
206 Use --cfg=network_model:CM02 to get the previous behavior.
209 ******************************************
210 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
211 ******************************************
212 * The new CPU model may changes simulations!
213 The point is that events occurring at the exact same timestamp
214 are not scheduled in the same order with the old and new
215 version. This may be enough to completely change the execution
216 of simulations in some cases.
217 * The new network model will change simulations!
218 This new model is more realistic than the previous one, so you
219 should consider redoing your old experiments with this model.
220 Sorry for the inconvenience.
223 * Introduce the supernovae compilation mode
224 When compiled that way, the whole SimGrid (or almost) is put in a
225 single compilation unit and compiled in one shoot.
226 This is to help gcc which has difficulties to inline stuff from one
228 The speedup seem to be above 15%, althrough more tests are needed on
229 amd64 to confirm that gain.
232 * Port of MSG's mailbox on top of SIMIX network
233 The put/get mechanism was greatly simplified on the way.
236 * New SIMIX network module. Provides:
237 - Mailbox: rendez-vous mecanism to find with who you want to speak
238 - Synchronous send/recv: easier and hopefully faster since the
239 logic is handled in the maestro process directly now
240 - Asynchronous send/recv: you dreamt of it? It's here now
241 Too bad that nobody cared enough to propagate the change to MSG.
242 * Add semaphores as SIMIX synchronization mechanism.
245 * new function SD_daxload(char*) to load a DAX file
246 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
247 * Introduce typed tasks. Specify its kind and cost at creation.
248 At scheduling, just give where it should be placed, and the cost
249 for each involved resource is automatically computed.
250 Existing constructors so far (more to come of course):
251 - SD_task_create_comm_e2e() for end-to-end communication
252 - SD_task_create_comp_seq() for sequential computation
253 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
254 * new function SD_task_dump() for debuging display
255 * new function SD_task_dotty(task,FILE*) writing to file the info
256 about the task in dotty format
257 * SD_task_dependency_exists() can now cope with having one of its
258 arguments NULL. If so, it tests whether the other argument has any
260 * Add getters on list of preceding/following tasks:
261 SD_task_get_parents(task) and SD_task_get_children(task)
262 * Add getters on amount of workstations and list:
263 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
264 * Add getter on task kind: SD_task_get_kind(task)
265 * Update the start_time and finish_time of tasks on completion/failure
266 * Bugfix: Remove task from state swags when destroyed
269 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
272 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
273 dynar with one separate thread per value of the dynar.
274 * Change the prototype of xbt_thread_create(), sorry.
275 Added a boolean parameter indicating whether we want to join this
276 thread (used in SG only for now)
277 * Implement xbt_thread_join and xbt_thread_yield in SG also.
280 * GTNetS wrappers should now be usable again (and betterly tested too)
281 * Fix a major regression from 3.2 where the timeout provided to
282 MSG_task_put_with_timeout() was used as absolute time before which
283 the comm should be done.
284 * Start to fix the <cluster> tag.
285 - Internal links should be good now (beside of the loopback, which
286 use the private link instead)
287 - paths to the external world is still rather broken
288 - the <route:multi> tag is just broken. Actually that's brain-dead.
289 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
290 to make it less stupid
291 ** Check your platform with teshsuite/simdag/platforms/flatifier **
292 * Fix a source-level compatibility glitch from 3.2: after defining
293 MSG_USE_DEPRECATED, you can use the old name
294 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
295 * Allow to compile from the SVN with automake 1.11
296 * Fix some problems when using the "start_time" tag in deployment XMLs.
297 * Fix #8569: XBT/synchro.h has redundant declarations
298 * Fix #8563: MSG return values and exceptions
299 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
300 * Integrate patch #8636: Obey DESTDIR when installing documentation.
301 Thanks to Robson Peixoto.
302 * Fix a vicious bug in dictionaries inducing that some elements were
303 not freed on xbt_dict_free()
305 Portability report of this version:
306 * Main portability targets:
307 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
309 - mac leopard on i386
310 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
311 but nothing critical.
312 * Other platforms: windows, AIX and others were not tested for this release
314 Timing report of this version:
315 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
316 scenario parameters). From 8h to a few seconds in desktop grid settings.
317 * Supernovae brings about 25% speedup on i386.
319 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
321 SimGrid (3.3.3) stable; urgency=low
323 The "Need for Speed" release.
325 The timings done to validate the 3.3.2 were faulty.
326 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
328 The problem was a conversion from a manually handled vector to
329 xbt_dynar_t on the critical path.
330 xbt_dynar_foreach calls functions, inducing stack management crap.
332 We inlined these functions and xbt_dynar_foreach is now breath taking.
333 We also inlined xbt_swag_belong on the way.
335 Here are some approximate speedup measurements (on master/slaves
336 simulations lasting between 10s and 20s each):
337 3.3.1 -> 3.3.2: about same performance
338 3.3.2 -> 3.3.3: 40% speedup
339 3.3.1 -> 3.3.3: 40% speedup
340 3.3.1 with inline patch -> 3.3.3: 30% speedup
342 Our reading is that the refactoring which occurred in 3.3.2 made us
343 suffer much more from the xbt_dynar_foreach low performance, but
344 once we solved this, this refactoring proved to be very performance
345 effective. From the 40% speedup, somehow, 10% are due to the
346 inlining and 30% to the refactoring.
348 That's a pitty that gcc cannot inline functions placed in other files
349 alone. We have to choose between:
350 - break the encapsulation (by putting private data structures and
351 accessors in headers files to help gcc)
352 - live with low performance
353 - switch to a decent compiler such as icc (not quite possible).
355 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
357 SimGrid (3.3.2) stable; urgency=low
359 The "Simplicity does not preceed complexity, but follows it" release.
361 The main contributors of this release were (lexical order):
362 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
365 * Extract the routing logic into its own object.
366 (was dupplicated in network.c and workstation_LV07.c;
367 Allows to implement other ways of storing that info)
368 => kill now useless network_card concept
369 - Use dynar to represent routes (instead of void** + int*)
370 - kill link_set (use surf_network_model->resource_set instead)
371 - Add a command-line option to choose the routing schema to use
372 - Add three new models:
373 * Floyd (shortest path computed at initialization)
374 * Dijikstra (shortest path recomputed all the time)
375 * Cached Dijikstra (shortest path computed on need)
376 All these models where contributed by Silas De Munck, and are
377 described in his ICCS09 paper.
379 * Simplify model declaration
380 (less redirections, less function to write when defining a model)
381 - Factorize stuff between models:
384 surf_model_resource_set(model)
385 surf_model_resource_by_name(model, name)
386 - Unify the types of models in s_surf_model_t (using an union)
387 - Embeed fields of common_public directly into s_surf_model_t
388 - Rename model methods:
389 action_free ~> action_unref
390 action_change_state ~> action_state_set
391 action_get_state ~> action_state_get
392 - Change model methods into functions :
393 (model)->common_public->action_use ~> surf_action_ref
395 * Implement a generic resource; use it as ancestor to specific ones
396 (allows to kill duplicated code in models)
397 Drawback: timer command don't need no name nor properties;
398 workstation_CLM03 don't need no properties
399 (but I guess we can live with those few bytes wasted)
401 * Improve the action object model
402 - implement a constructor avoiding dupplicated code about field
403 initialization in generic_action part.
405 * Kill the SDP model: it has an external dependency, is deprecated
406 in flavor of modern lmm models, and didn't compile since a while
409 * Relocation of the context module from XBT to SIMIX.
410 (the context were decoupled from the simix processes, duplicating a lot of code)
411 => a lot of code was factorized
412 - less overhead is introduced during scheduling
413 - simpler API for the context factory
414 - the logic for process creation,destruction and manipulation was simplified
415 * Simplification of the s_smx_process_t data structure.
416 => accesing the simix level data associated to a process is faster now,
417 and the code is a lot more readable.
420 * Implement some more MPI primitives:
421 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
422 -implementation: Bcast: flat or 2-ary tree (default),
425 Allreduce: Reduce then Bcast
426 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
427 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
428 Alltoallv: flat tree, like ompi
430 * Add support for optimized collectives (Bcast is now binomial by default)
431 * Port smpirun and smpicc to OS X
434 * Kill SD_link_get_properties: hard to maintain and makes very little sense
435 Shout out if you used it.
438 * Display the list of still queued messages in SG mode when existing
442 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
443 * Add xbt_graph_node_get_outedges() [Silas De Munck]
444 * Add xbt_str_from_file(FILE*)
445 * Add xbt_dict_get_key achieving a linear reverse search
446 * Remove the context module
448 Portability report of this version:
449 * Main portability targets:
450 - Linux(debian)/x86/context
451 - Linux(debian)/x86/pthreads
452 - Linux(debian)/amd64/context
453 - Linux(debian)/amd64/pthreads
454 On these, we still have the eratic breakages of gras/pmm and
455 amok/saturate_sg reported in previous version. We still think
456 that the tests are the cause of the fault, not the tested code.
458 - Mac OSX Leopard/x86/context
459 Still false negative in tesh autotesting.
460 Smpi still fails, but this time because readlink does not accept -f
461 Everything seems to work properly beside of that.
464 - AIX version 5.3 (only tested contexts this time)
465 Smpi still fails there because mktemp is not installed.
466 Everything seems to work properly beside of that.
468 I managed to compile it for the first time, but several breakages.
469 Won't delay the release for this exotic platform.
471 * Windows: it's still lagging behind. If you want to help, please
474 Timing report of this version:
475 This version seem to be more than 5% faster than 3.3.1 (on linux
476 64bits with contextes). The gain is less than expected, we are
477 investigating this for next release.
479 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
481 SimGrid (3.3.1) stable; urgency=low
484 * Implement a --cfg-help to show existing configuration variables
485 * Build chain do not require doxygen in maintainer mode
488 * fix a bug on struct sizeof computation, which prevented the
489 exchange of arrays of structs in some conditions
490 - added a regression test about this in datadesc_usage
491 * Allow the exchange of 0-long dynamic vectors.
492 - for that, use -1 as indicator of dynamic size instead of 0
493 - This implied to change any size from unsigned long to long,
494 reducing a bit communication abilities, but I guess that with
495 64bits being quite common, this is more than enough.
496 - This also induce a protocol change, thus bumping network protocol
497 version from 0 to 1 (if we have external users, we have to get
498 clean on that point too ;)
499 - added two regression tests about this in datadesc_usage
500 * Be more verbose when propagating local exceptions
501 This helps debugging.
502 * Display the status of simulated processes when receiving SIGINT in
506 * Allow to control the simulation from a trace file.
507 New functions MSG_action_register() and MSG_action_trace_run()
508 The first one allows to associate a function execution to each
509 kind of action while the second one parses a trace file and
510 triggers the corresponding actions within the system.
511 For now, only a toy example is provided in examples/msg/actions
512 * Add an exemple of process migration in examples/msg/migration
513 * Fix a bug in task exchange which broke MSG_task_get_sender()
514 Add a teshsuite regression test for that.
515 [Bug: if MSG_task_get_sender() is called after sender exit,
517 * Fix a bug which prevented suspend/resume to work properly
518 * Display the status of simulated processes when receiving SIGINT
519 This fixes a regression of v3.3. due to the introduction of SIMIX
520 * Bug fixing in failure management:
521 - trace could not start by a failure at time 0
522 - failure during communications were not working
525 * Add SIMIX_process_set_name() to change the name of the current
526 process in the log messages.
527 * Store smx_hosts in a dict since we only retrieve them by name
528 * Move the configuration infrastructure to surf
531 * Move the configuration infrastructure to surf
534 * Massive internal cleanups:
535 - Store internal structures on processes instead of hosts (allows
536 to have more than one process per host, in addition of being more
538 - Cleanup the initialization/finalization process
539 - Kill a whole bunch of unneeded synchronization:
540 processes run in exclusive manner within the simulator
541 - Move queues from global tables to process data fields
543 - now accept -platform and -hostfile arguments
544 - Pass the right rank value to processes according to the hostfile
545 * Compile the examples by default, and use them as regression tests
546 * Implement MPI_Wtime()
547 * Change the reference speed to a command line option
550 * TCP_gamma can now be specified as command line option using
551 --cfg=TCP_gamma:10000000.0
552 * Change the --surf-path cmd line option into --cfg=path:
555 * Also include strbuff from xbt.h public header
556 * xbt_ex_display(): do not free the exception after displaying
557 This allows to do more with the given exception afterward.
558 Users should call xbt_ex_free() themselves.
562 Portability report of this version:
563 * Main portability targets:
564 - Linux(debian)/x86/context
565 - Linux(debian)/x86/pthreads
566 - Linux(debian)/amd64/context
567 - Linux(debian)/amd64/pthreads
568 These targets fail about 1/10 of times on gras/pmm, but we believe
569 that this is because of the test, not because of simgrid.
570 amok/saturate_sg fails even more rarely, and the test may not be
573 - Mac OSX Leopard/x86/context
574 The test suite still spits tons of errors because some obscure
575 force prevents us from removing the temporary directories
576 arguing that they still contain some metadata I've never heard of.
577 Smpi fails because seq is not installed.
578 Everything seems to work properly beside of that.
581 - AIX version 5.3 (both contexts and pthread)
582 Smpi still fails there because mktemp is not installed.
583 XML inclusions seems rosty on AIX.
585 * Windows: it's still lagging behind. If you want to help, please
588 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
590 SimGrid (3.3) stable; urgency=high
594 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
597 * Introduce the SIMIX module: factorize code between MSG and GRAS.
600 Until now, GRAS were using MSG as an interface to SURF. It was
601 quite difficult because both interface have several differences
602 (MSG channels vs GRAS sockets were the most notable point).
604 This also opens the gate to SMPI (which should occur soon) and speed
605 up simulations by to 40% (even if it were not the main goal).
607 **************************************
608 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
609 **************************************
610 The point is that events occuring at the exact same timestamp are
611 not scheduled in the same order with the old and new version. This
612 may be enough to completely change the execution of simulations in
613 some cases. Sorry for the inconvenience.
615 * Cleanup and upgrade the XML format to push further scalability
616 issues (check http://hal.inria.fr/inria-00256883/ for more info)
618 * Improve the testing infrastructure with tesh. Now a very large part of
619 the code is tested not only by being run but also by checking that the
620 output match an expected output [Mt].
622 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
623 is really less memory-demanding, which should allow you to use
624 larger files in SimGrid [AL].
626 * Inform valgrind about our contextes, so that it becomes usable
627 with the default (and more effecient) version of SimGrid
628 [contributed by Sékou Diakite, many thanks]
631 * Introduce a listener thread in charge of receiving incomming
632 messages from the network. It allows to overlap communication and
633 computation but most notably, it removes some stupid deadlocks due
634 to the fact that so far, a process could not send and receive at
635 the same time. This made most non trivial communication schema
637 * Convert the PIDs from long int to int to match the MSG ones (and
639 * New function: gras_agent_spawn() to launch a new process on
640 current host. Only working in simulation for now. [Mt]
641 * New function: gras_os_hostport() returning a constant form (ie,
642 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
645 * Make the backtrace of exceptions more human readable [Mt]
646 * New module: xbt/str [Mt]
647 a ton of string utility functions (split, join, printf to a newly
648 allocated buffer, trim, etc)
649 * New module: xbt/hash [Mt]
650 SHA1 hashing algorithm (more to come if needed)
651 * New module: xbt/synchro [Mt]
652 synchronization tools (mutex and conditions) working the same way
653 in simulation and in real life (mainly useful for GRAS, but not
655 * New module: xbt/queue [Mt]
656 classical producer/consumer synchronization scheme
657 * xbt_dynar_new_sync() creates a synchronized dynar. All access
658 (using the classical functions will get serialized) [Mt]
659 * Make dictionary internal table dynamic. No need to specify its size
660 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
662 * Make sure the log channels are organized as a tree under windows
663 (because of ANSI C compatibility issue, any channel were child of
667 * Cleaned many thing in surf and fixed a few bugs [AL].
668 * Add a nice command line configuration mechanism to compose models [AL].
669 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
670 the previous one (KCCFLN05). It relies on something that looks like
671 a max-min sharing mechanism but cannot be written as such. A new solver
672 was thus designed [AL].
673 * Add a new solver to lmm. Based on Lagrange optimization and
674 gradient-based descent, it enables to efficiently maximise systems s.a
676 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
678 This solver enables to propose two new network models for TCP Reno and
679 TCP Vegas based on Low's work. These models still need to be fully
680 tested though [Pedro Velho].
683 * Bug fix in SD_simulate. Now the time bound given as argument is
685 * Use the new parallel task model (ptask_L07) as default.
686 * Use the SURF command line configuration mechanism.
687 * 0-size tasks (for synchronization) should now work.
689 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
691 SimGrid (3.2) stable; urgency=high
695 We still experience issues on this platform, but we believe that at
698 GRAS API BREAKAGE (for simplification purpose, sorry):
699 * the gras_msgtype_by_name is not used anymore. Instead of
700 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
701 you can write (and must)
702 gras_msg_send(toserver, "request", &request);
703 - If you still want to pass a gras_msgtype_t to the function (to cache
704 the type and avoid the lookup time), use the gras_msg_send_() variant.
705 - Impacted functions:
706 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
707 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
708 * The callbacks are now expected to return 0 when everything went well
709 (just like the main() function)
711 GRAS new features and improvements:
712 * New module mecanism where user code can use per process globals [Mt]
713 This is similar to gras_userdata_*() functions, but for libraries. It
714 factorize some code developped over and over in the examples and AMOK.
715 It has still to be documented and used (only amok/peermanagement is
717 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
718 loss when they were small enough to fit into the buffer and sent quickly
719 enough so that they can all get received in one shoot.
720 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
721 if not found. Use the *_or_null() variant for the old semantic.
722 * In gras_msg_handle, do not discard messages without callback.
723 They are probably messages to be explicitly awaited later (ie, proofs of
724 mis-synchronization in userland since they are sent before being awaited)
726 * gras_socket_meas_send/recv: semantic changed!
727 The numerical arguments used to be (1) the total amount of data to send
728 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
729 messages. This was need for the fool willing to send more than MAXINT
730 bytes on quite fat pipes.
733 * Do really rename the hostmanagement module to peermanagement. [Mt]
734 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
735 but this is rather new and this was documented in the module
736 documentation (poor excuses, I admit)
737 * Bandwidth measurement semantic changed! This follows the changes to
738 gras_socket_meas_send/recv explained above.
741 * A sequential mode has been added to the workstations. When a workstation
742 is in sequential mode, it can execute only one task, and the other tasks
743 are waiting in a FIFO. [Christophe Thiery]
746 * The KCCFLN05 workstation model now handles parallel tasks. It is the
747 model for SIMDAG. [Christophe Thiery]
748 * Bug fix in the maxmin solver: Some values were close to 0 instead of
749 equal to 0, which caused some bad behaviors in
750 saturated_constraint_set_update. I now use a threshold mechanism like in
754 * When running manually src/testall, you select specific units [Mt]
755 testall is the result of our cunit mecanism, and should replace all
756 the scripty thingy around since bash don't run easily on billware.
758 * A mallocator system has been added. [Christophe Thiery]
759 Mallocators allow you to recycle your unused objects instead of freeing them
760 and allocating new ones.
762 Documentation update:
763 * FAQ reworking + New FAQs:
764 - "Valgrind spits tons of errors!" [Mt]
765 - "How to repport bugs" [Mt]
766 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
767 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
768 - Communication time measurement within MSG [AL]
769 - I experience weird communication times when I change the latency [AL]
772 - an introduction to the framework and to the used communication model
773 - an initiatic tour introducing the most proheminent features:
775 . Lesson 0: Installing GRAS
776 . Lesson 1: Setting up your own project
777 o Part 2: Message passing
778 . Lesson 2: Exchanging simple messages
779 . Lesson 3: Passing arguments to the processes (in SG)
780 . Lesson 4: Attaching callbacks to messages
781 . Lesson 5: Using globals in processes
782 . Lesson 6: Logging informations properly
783 . Lesson 7: Using internal timers
784 . Lesson 8: Handling errors through exceptions
785 . Lesson 9: Exchanging simple data
786 . Lesson 10: Remote Procedure Calling (RPC)
787 . Lesson 11: Explicitely waiting for messages
788 . Recapping of message passing features in GRAS
789 - A HOWTO section containing:
790 o HOWTO design a GRAS application
791 More are due, of course. They will come latter. In the meanwhile, you can
792 check the examples which are still here.
794 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
796 SimGrid (3.1) stable; urgency=high
800 There was a stack corruption somewhere, visible only when optimizing
801 with these versions. [Vince]
804 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
805 module that enabled to play with Directed Acyclic Graphs. It is built
806 directly on top of SURF and provides an API rather close to the old
807 SG. Some old codes using SG are currently under rewrite to check that
808 all needful functions are provided. [Christophe Thiery]
811 * Complete rewrite of the KCCFLN05 workstation model. It is now an
812 extension of the classical CLM03 model that gracefully handles
813 failures. This is now the default model for MSG and GRAS. It doesn't
814 handle parallel tasks yet though. [AL]
815 * Bug fix: Weights were not correctly set in the network part.
816 WARNING: This may have resulted in incorrect results with simulations
817 where there are more than one flow on a given link. [AL]
820 * After a (long ?) discussion on simgrid-devel, we have decided that the
821 convention we had on units was stupid. That is why it has been decided
822 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
823 WARNING : This means that all previous platform files will not work as
824 such with this version! A warning is issued to ask users to update
826 A conversion script can be found in the contrib module of the CVS, under
827 the name contrib/platform_generation/surfxml_update.pl [MQ]
830 * Bug fix: Processes were started in reverse order, wrt deployment file.
831 WARNING: if your code relies on this bug, please fix it. [AL]
832 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
833 being executed on two different locations. [AL]
834 * Bug fix: Failures are now better supported thanks to Derrick's tests
835 (there was many failure situations I hadn't thought of and that weren't
836 correctly handled). [AL]
837 * New function: MSG_host_is_avail indicates you whether a given m_host_t
841 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
842 Exception occurring on server-side are propagated back to client (!).
844 API CHANGE: the callback changed their prototype. Change:
845 int my_handler(gras_socket_t expeditor, void *payload_data) {
847 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
848 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
850 * New! function: gras_msg_handleall to deal with all messages arriving
851 within a given period.
852 * New! function: gras_socket_server_range to get a server socket in a
853 range of port numbers (ease to avoid port number conflicts) [MQ]
854 * New! gras processes display their backtrace when they get a SIGUSR1
855 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
856 Sweet to debug RL processes [MQ]
860 - Do not force experiment sizes to be expressed in kb, or it becomes
861 impossible to measure the latency this way (needs one byte-long tests)
862 WARNING: this changes the amok_bw_* function semantic. [MQ]
863 - Implements the link saturation stuff. [MQ]
864 * Peer management module:
865 New! module factorizing code that we wrote over and over [MQ].
868 * New module: cunit (my jUnit implementation in ansi C) [MQ]
869 - Test units are placed directly into the library code, they get extracted
870 automatically and placed into the src/testall binary.
871 - Convert most of the XBT tests to this system.
872 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
873 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
874 live in the same C code. This required to change a little bit the API
875 of surfxml parsing but shouldn't be an issue for end-users. [AL]
876 * New module: sparse graph structure with basic algorithms (this is work
877 in progress and the API is not considered to be frozen yet). [AL]
878 * Display more information on backtraces: source line & function names are
879 now displayed just like valgrind does (rely on addr2line tool) [MQ]
880 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
881 * Reworked a little bit some #include statements to load only required
882 headers. Some user code that relied on SimGrid to include stdlib or
883 stdio may need to include it by themselves. [AL]
884 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
886 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
887 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
888 but I guess that almost nobody used those parts. [MQ]
890 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
892 SimGrid (3.0.1) stable; urgency=low
895 * Unfortunately, I had missed 5 misnamed functions:
896 xbt_fifo_item_t xbt_fifo_newitem(void);
897 void xbt_fifo_freeitem(xbt_fifo_item_t);
898 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
899 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
900 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
901 They're now deprecated. Please use their new versions:
902 xbt_fifo_item_t xbt_fifo_new_item(void);
903 void xbt_fifo_free_item(xbt_fifo_item_t);
904 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
905 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
906 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
908 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
909 * Documentation: xbt_log module unmercifully reworked [MQ]
910 * Bugfix: there was a problem with the ending of contexts with
911 the pthread backend. It caused some weird deadlock or behavior
912 depending on the pthread implementation. [AL]
913 * Bugfix: get the exceptions raised in the simulator repport where
914 and why they come from when they are not catched in time [AL, MQ]
917 * Bugfix: Do repport the error when two non-connected hosts try to
918 exchange data (Thanks to Flavien for stumbling into this one) [AL]
921 * Add additionnal checkings on communications. Assert that two
922 communicating hosts are connected by a set of links... [AL]
925 * Add additionnal checkings on channel values in communication [AL]
926 * New: MSG_task_get_source to see on which host a task was generated [HC]
927 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
928 the number of tasks waiting to be received on channel and sent
930 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
931 waits for the first task coming from a given host.. [AL]
933 GRAS new functionnalities: [MQ]
934 * Enhance the parsing macro to allow the size of multidimentional objects
935 to be given thru annotations.
936 * New example (and documentation): Matrix Multiplication a la RPC
937 (as when I was young!) and fix a bunch of bugs found on the way.
939 GRAS performance improvements: [MQ]
941 * Reduce the amount of cbps creation/destruction by making it static to
942 datadesc_send/recv() and using a (newly created) cbps_reset (based on
945 * Change libdata to a set so that we can search for stuff by ID (and thus
946 reduce the insane amount of dict lookups)
949 * Actually implement gras_datadesc_copy() so that we don't have to mimick
950 RL communication on top of SG since it's so uneffective.
951 It may also be used for inter-thread communication in RL, one day.
952 * Use gras_datadesc_copy() to exchange messages on top of SG
954 - improve message exchange performance on top of SG
955 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
956 * Don't exchange on the network the size of the used part of buffer,
957 instead, specify the possible buffer size to read().
959 - reduces the amount of read/write calls (one pair per exchange)
960 - reduces the amount of exchanged data (the size)
961 - allows to retrieve all arrived data on receiver side, if we don't need
962 it right now (subsequent read will peek the buffer)
963 - allows the receiver to proceed with the begining of the stream before
964 everything is arrived
965 - make it possible to build an iov transport (using readv/writev)
967 - take care of the data with non-stable storage (like stacked data),
969 * If possible, TCP send uses vector I/O (when writev() is here)
970 - Don't use it for receive since we send data sizes and data on the
971 same stream, so we wouldn't be able to chain large amount of chunks
972 before having to flush the stuff to read the size.
973 * Rework the transport plugin mecanism to simplify it and reduce the
974 amount of pointer dereferencement when searching for the right function
977 * I guess that now, we do almost as few system calls as possible while
978 doing as few data copy as possible.
980 To improve it further, we could try to send all the sizes first and then
981 all the data (to use iov on receiving size), but it's only a partial
982 solution: when you have 2 dimensional data, the sizes of the second
983 dimension is data of the first dimension, so you need 3 streams.
985 I'm not sure the potential performance gains justify the coding burden.
987 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
989 SimGrid (3.00) stable; urgency=high
992 * New! Give the possibility to hijack the surf parser and thus bypass
993 MSG_create_environment and MSG_launch_application. Have a look at
994 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
996 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
998 SimGrid (2.96) unstable; urgency=low
1003 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
1004 This deprecates the xbt_error_t mecanisms.
1005 It modifies (simplifies) all XBT and GRAS API.
1006 MSG API keeps unchanged (exceptions raised by XBT are catched from
1007 within MSG and masked with existing error handling facilities)
1010 * New! Add a FATPIPE model. [AL]
1011 * New! Add a parallel task model. [AL]
1012 * New! Add automatically a loopback interface (in the default
1013 network model) if none was precised.
1016 * Bugfix: MSG_process_resume now works with the current running process.
1018 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
1019 * Modification of MSG_task_get_compute_duration. Once a task has been
1020 processed, the value returned by this function is now equal to 0. [AL]
1021 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
1022 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
1023 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
1024 of a m_task. For now, MSG_task_cancel only works with computation
1026 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
1027 of the processor (in Mflop/s) regardless of the current load on the
1029 * API Change: use proper naming convention for MSG_getClock and
1030 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
1032 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
1033 This function changes the priority of a computation task. This priority
1034 doesn't affect the transfer rate. A priority of 2 will make a task
1035 receive two times more cpu power than the other ones. This function
1036 has been added to suit the needs of Nguyen The Loc and hasn't been that
1037 much tested yet. So if it fails, please report it and send me your code.
1039 * API Change: removed all functions and types that were marked "deprecated"
1040 since many months. Renamed MSG_global_init_args to MSG_global_init.
1042 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
1044 SimGrid (2.95) unstable; urgency=low
1047 * Steal some nice code to GNU pth to fix context detection and usage [AL]
1048 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
1049 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
1052 * Bugfix: Allow absolute paths for platform description files [MQ]
1053 * Bugfix: do free the variables after use. Leads to drastic performance
1055 * Implement max_duration (ie, timeouts) on resources [AL]
1058 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
1060 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
1061 the needed support (timeouts) [AL]
1064 * Implement measurement sockets. You can now get the bandwidth between two
1065 hosts thanks to AMOK (see below). [MQ]
1066 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
1067 dynar over the network (yeah) [MQ]
1068 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
1069 * simple/static token-ring example. [Alexandre Colucci and MQ]
1070 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
1071 in place before [MQ]
1074 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
1075 type parsing. "short" and "long" modifiers were also ignored; other
1076 modifier (such as reference level) are still ignored. [MQ]
1077 * Embeed the buffer size within the buffer itself on SG. [MQ]
1078 That way, send() are atomic and cannot get intermixed anymore (at least
1079 the ones which are less than 100k; bigger messages still have the issue)
1080 * Array size pushed by the field, not by the field type (or each
1081 and every long int will push stuff to the cbps) [MQ]
1082 * use select() to sleep since it allows to portably sleep less than one
1085 GRAS (minor cleanups)
1086 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
1089 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
1090 * type category 'ignored' killed as it was never used and were difficult
1092 * whether a type can cycle or not is now a flag, leaving room for more
1093 flags (as "ignored", if we feel the need one day ;)
1094 * Rename raw sockets to measurement sockets since "raw" has another
1095 meaning in networking community.
1098 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
1099 and offers features not belonging to GRAS but that most applications
1100 need. One day, it may be a set of plugins loadable at runtime.
1101 * New module: bandwidth
1102 bandwidth measurement between arbitrary nodes running this module. [MQ]
1104 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
1106 SimGrid (2.94) unstable; urgency=low
1108 The first beta release of SimGrid 3 !
1112 * Update the main page and the FAQ. Adding references to gforge.
1115 * Add a gras_os_getpid function.
1118 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
1119 * Extend the logs so that they also print PID, hostname, date, ... if
1121 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
1122 and kill the old version which were in testsuite/
1123 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
1127 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
1128 for users. Instead, each programming environment (GRAS, MSG,...) use it
1129 when needed to provide such a feature to users.
1130 Don't shortcut the mecanism or you will also shortcut the virtualization
1131 you need on the simulator.
1135 * Cleanups in configury with regard to compile optimization/warning flags.
1136 Also add -fno-loop-optimize to any powerpc since it's the optimization
1137 killing gcc (< 3.4.0).
1138 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
1139 needed by MSG examples complications
1140 * Borrow configury beautifications from PHP
1143 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
1144 warning (thanks loris for stumbling into this one).
1145 * Bugfix: stop loading private headers (gras_config.h) from the public
1149 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
1150 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
1151 RL would imply a DNS resolver, which is *hard* to do in a portable way
1152 (and therefore delayed).
1153 * Implement a real timer mecanism and use it in timing macros. This allows
1154 to avoid rounding errors and get a 0.000005 sec precision in timing
1155 macros. While I was at it, various cleanups:
1156 - allow to declare more than one timed section per file (fix a stupid bug)
1157 - move some private declaration to the right place
1158 - merge conditional execution and timing macros into emulation module
1159 - document the module
1160 - make sure the module cleanups its mess on gras_exit
1161 * Documentation improvements:
1162 - (new) how to compile applications using GRAS
1163 - (new) emulation support (timing macros)
1165 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
1167 SimGrid (2.93) unstable; urgency=low
1169 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
1172 - Use Paje properly where used. Still to be sanitized properly.
1173 - Portability fix: Add an implementation of the contexts using pthread
1177 - Add xbt_procname(): returns the name of the current process.
1178 Use it to show the current process's name in all logging.
1180 - fix detection of older flex version and the reaction, since we do
1181 depend on modern ones (we use lex_destroy)
1182 - Better separation of SG and RL in the libs: remove all simulation code
1183 from libgras. As a result, this lib is now only 200k when stripped.
1184 Some of the xbt modules may also be duplicated (two sets and such) and
1185 should be cleaned/killed before SG3.
1186 - Insist on using xlC on AIX because of weird problems involving gcc there.
1187 - Cleanup the make remote stuff. This is now done by scripts
1188 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
1189 mainly for our private use, but we're working on changing them to user
1192 - Bugfix: flush the socket on close only if there is some *output*.
1193 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
1195 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
1198 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
1200 SimGrid (2.92) unstable; urgency=low
1202 Alpha 3 on the path to SimGrid 3
1206 - New! First try of benchmarking macros.
1207 - New! First try so that gras_stub_generator generate deployment and
1208 remote compilation helpers.
1210 - Bugfix: Initialization fix in msg_test.
1214 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
1216 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
1218 - API Change: gras_os_sleep to take the amount of seconds as a double.
1219 Accepting an int was error prone since it was the only location where
1220 seconds were coded as such. It leaded to damn rounding errors.
1221 - Bugfix: Hard to belive that timers ever worked before this.
1223 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
1225 SimGrid (2.91) unstable; urgency=low
1227 Alpha 2 on the path to SimGrid 3
1231 - Bug fix in the lmm_solver.
1233 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
1234 through the function MSG_paje_output.
1235 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
1236 - It is possible to bound the rate of a communication in MSG with
1237 MSG_task_put_bounded() (was already in the previous version but I had forgotten
1238 to write it in the changelog).
1239 - Bug fix to let GRAS run on top of MSG until we move it directly on top
1244 - Various cleanups to the autotools stuff
1245 - Begin to move Gras examples to examples/gras/
1246 - Let make distcheck work again (yeah!)
1248 - documentation overhauled using doxygen.
1249 gtk-doc-tools is dead in SimGrid now.
1250 - Automatically extract all existing logging categories, and add the list
1251 to the documentation (long standing one, to say the less)
1253 - Cleanup the known architecture table. Reorder the entries to group what
1254 should be, and use a more consistent naming scheme.
1255 (some of the test dataset are still to be regenerated)
1256 - New! Allow library to register globals on each process just as userdata
1258 This is implemented using a xbt_dict and not a xbt_set, so we loose the
1259 lookup time (for now).
1260 Use it in msg and trp.
1261 This cleans a lot the internals and helps enforcing privacy of the
1262 headers between the gras components.
1263 - New! Add a timer mechanism, not unlike cron(8) and at(1).
1264 - Bugfix: gras_os_time was delirious in RL.
1265 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
1267 - Reenable GRAS now that it works.
1269 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
1271 SimGrid (2.90) unstable; urgency=low
1273 Alpha 1 on the path to SimGrid 3
1275 * It is a long time since the last release of SimGrid. I'm sorry about
1276 that but as I had told you, I was rewriting a lot of things. I apologize
1277 to those who had been reporting bugs to me and that I had not answered.
1278 If your bug is still in the new version, please tell me. Here is a
1279 summary of the main changes.
1281 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
1282 lead by Martin Quinson. As a consequence SimGrid gains a lot in
1283 portability, speed, and a lot more but you'll figure it out later.
1284 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
1285 I wanted to release the new MSG as soon as possible and I have
1286 broken GRAS, which is the reason why, for now, only MSG is fully
1287 functional. A laconic description of these projects is available
1288 in the documentation.
1290 * REVOLUTION 2: I have removed SG and I am now using a new simulation
1291 kernel optimized for our needs (called SURF but only the developers
1292 should use it). Hence, MSG is now roughly 30 times faster and I think
1293 that by rewriting a little bit MSG, I could event speed it up a little
1294 bit more. Beside the gain in speed, it is also much easier to encode a
1295 new platform model with SURF than it was with SG. More to come...
1297 * REVOLUTION 3: I have tried to change a little as possible the API of
1298 MSG but a few things really had to disappear. The main differences
1299 with the previous version are :
1300 1) no more m_links_t and the corresponding functions. Platforms are
1301 directly read from a XML description and cannot be hard-coded
1302 anymore. The same format is used for application deployment
1303 description. The new format is described in the documentation.
1304 Have a look in tools/platform_generation. There is a tiny script
1305 that converts from the old platform format to the new one. Concerning
1306 the application deployment format, parsing the old one is tricky.
1307 I think most of you should however be able to convert your files. If
1308 it is really an issue, I can write a C code that does the conversion.
1310 2) the toolbox tbx does not exist anymore. We now have a library
1311 with much more data-structures but without the hash-tables (we have
1312 dictionaries that are much faster).
1314 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
1316 *****************************************************************************
1317 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
1318 * don't feel like converting the oldies. (Mt) *
1319 *****************************************************************************
1322 Version 2.90: "the long awaited one"
1323 - Finished rewriting and debugging MSG. Rewrote the documentation.
1324 - disable GRAS for now since it needs to be ported to the newest SG
1327 - Finish the port to windows (using mingw32 for cross-compile)
1330 - Main loop and datastructures of SURF. A cpu resource object is
1331 functional. Surf can thus be used to create cpu's with variable
1332 performance on which you can execute some actions.
1334 2004-11-15 Martin Quinson
1335 - Port to ARM. Simply added the alignment and size descriptions. Should
1336 work, but the ARM machines are so slow that I didn't had the opportunity
1337 to 'make check' over there yet.
1339 2004-11-15 Arnaud Legrand
1340 - Trace manager now written. It uses a heap structure and is therefore
1341 expected to be efficient. It may however be speeded up (particularly
1342 when many events occur at the same date) by using red and black
1343 trees. One day maybe...
1344 - Max-min linear system solver written. It uses a sparse matrix
1345 structure taking advantage of its expected use. Most operations are
1346 O(1) and free/calloc are called as few as possible. The computation of
1347 the minimum could however be improved by using a red and black tree
1350 2004-11-03 Arnaud Legrand
1351 - Rename every gras_* function that was in xbt/ to its xbt_
1353 - Add a heap and a doubly-linked list to xbt
1354 - Added a dichotomy to the dictionaries. make check works as well before
1355 so I assume that the patch is correct. I do not know however if things
1356 run effectively faster than before now. :)
1358 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
1359 SimGrid, and the version number is bumped to 2.x
1361 2004-10-29 Martin Quinson
1362 - Introduction of the remote errors.
1363 They are the result of a RMI/RPC on the remote machine.
1364 ErrCodes being scalar values, you can't get the host on which those
1365 errors did happen. Extending the error mechanism as in Gnome is possible.
1366 No idea yet whether it is a good idea.
1368 2004-10-28 Martin Quinson
1369 - Interface revolution: the Starred Structure Eradication.
1370 I used to do typedef struct {} toto_t; and then handle *toto_t.
1371 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
1372 - ???_t is a valid type (builded with typedef)
1373 - s_toto_t is a structure (access to fields with .)
1374 - s_toto is a structure needing 'struct' keyword to be used
1375 - e_toto_t is an enum
1376 - toto_t is an 'object' (struct*)
1378 typedef struct s_toto {} s_toto_t, *toto_t;
1379 typedef enum {} e_toto_t;
1380 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
1381 s_toto_t) is private.
1383 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
1384 so that it can set the variable to NULL. It was so for dicts and sets,
1385 it changed for dynars.
1387 - Fix a bunch of memleaks in dict_remove
1388 - Fix a bug in sg/server_socket opening: it failed all the time.
1390 2004-10-07 Martin Quinson
1391 - Speed up dynar lookup operation a bit.
1393 gras_dynar_get is dead.
1395 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
1396 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
1397 (which gives you the address of the stored data).
1399 gras_dynar_get_as is an helpful macro which allows you to retrieve a
1400 copy of the data using an affectation to do the job and not a memcpy.
1402 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
1403 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
1405 It does not really speedup the dynar test because they are
1406 setting elements all the time (and look them seldom). But the dict does
1407 far more lookup than setting.
1409 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
1411 2004-10-05 Martin Quinson
1412 - Allow to (en/dis)able the cycle detection at run time.
1414 Whether we should check for cycle or not is now a property of each
1415 datatype. When you think there may be some cycle, use datadesc_cycle_set.
1416 datadesc_cycle_unset allow to remove this property when previously set.
1418 Note that the cycle detection is off by default since it impacts the
1419 performance. Watch the data you feed GRAS with ;)
1421 This property is hereditary. Any element embedded in a structure having it
1422 set have it set for the time of this data exchange.
1424 You should set it both on sender and receiver side. If you don't set it on
1425 sender side, it will enter an endless loop. If you forget on receiver
1426 side, the cycles won't be recreated after communication.
1428 - Header reorganization.
1429 Kill gras_private.h, each submodule must load the headers it needs.
1431 2004-10-04 Martin Quinson
1432 - Interface revolution: do not try to survive to malloc failure.
1434 Now, gras_malloc and friends call gras_abort() on failure.
1435 As a conclusion, malloc_error is not a valid error anymore, and all
1436 functions for which it was the only gras_error_t return value are
1437 changed. They now return void, or there result directly.
1438 This simplify the API a lot.
1440 2004-09-29 Martin Quinson
1441 - Re-enable raw sockets.
1442 Created by gras_socket_{client,server}_ext;
1443 Used with gras_raw_{send,recv}
1446 It should allow to kill the last bits of gras first version soon.
1448 This is not completely satisfactory yet (duplicate code with
1449 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
1452 - Simplify transport plugin (internal) interface by not passing any
1453 argument to _server and _client, but embedding them in the socket
1456 2004-09-28 Martin Quinson
1457 - Finish the port to AIX.
1458 autoconf was my problem (segfault within the malloc replacement
1459 function. No idea why)
1461 2004-09-16 Martin Quinson
1462 - Fix some size_t madness on 64bit architectures.
1464 2004-09-08 Martin Quinson
1465 - Reduce the number of system headers loaded, overload some more system
1466 calls (such as malloc to cast the result of the system one, and work
1468 - Fix and reintroduce the config support
1470 2004-09-07 Martin Quinson
1471 - Source code reorganization to allow Arnaud to surf all over there.
1472 - Allow to document the logging categories.
1473 - Remove all uppercase from logging categories and useless cleanup in names.
1475 2004-08-18 Martin Quinson
1476 Version 0.6.2 (protocol not changed; API changed)
1477 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
1478 gras_error_t), and NULL when not found. Functions expecting a msgtype
1479 as argument (msg_wait; msg_send) deal with NULL argument by providing a
1480 hopefully usefull message.
1481 - Portability to prehistoric sparcs again
1483 2004-08-17 Martin Quinson
1484 Version 0.6.1 (protocol not changed; ABI not changed)
1485 - prealloc some buffers to speed things up
1487 2004-08-11 Martin Quinson
1488 Version 0.6 (protocol not changed; ABI expended)
1489 - The parsing macro can deal with the references, provided that you add
1490 the relevant annotations (using GRAS_ANNOTE(size,field_name))
1492 2004-08-09 Martin Quinson
1493 Version 0.5 (protocol not changed; ABI changed)
1494 - Allow to off turn the cycle detection code in data exchange at
1495 compilation time. It should be at run time, but I'm short of time (and
1496 the config stuff is still broken). That way, we keep dict out of the
1497 critical path, which is good because the performance is poor:
1498 - search not dichotomial yet
1499 - dynar give no way to access their content and memcpy everytime
1500 - In composed data description (struct, ref and so on), stop foolness of
1501 keeping the subtype's ID, but store the type itself. This keeps sets out
1502 of the critical path, which is good since they rely on dynar and
1503 dictionnaries. The only loose of that is that we cannot detect the
1504 redeclaration of a structure/union with another content (but I'm not sure
1505 the code detected well this error before anyway). We still can detect
1506 the redefinition discrepancy for the other types.
1507 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
1508 it breaks the code because of type-punning used all over the place).
1509 This breaks on all non-gcc architectures (for now).
1511 All those changes (plus the buffer of last time) allow me to gain 2 order
1512 of magnitude on cruel tests consisting of 800000 array of integers on two
1513 level of a hierarchical structure (200 secondes -> 4 secondes)
1516 - the selector of reference must now return the type it points to, not
1517 the ID of this type.
1519 2004-08-06 Martin Quinson
1520 Version 0.4 (protocol changed; ABI not changed)
1521 - Allow to pass --gras-log argument to processes in simulation mode. Really.
1522 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
1523 - Implement a buffer transport, and use it by default (it relies on tcp in
1524 real life and on sg in simulation).
1525 That's a bit hackish since I had a new field to the structure to store
1526 its data without interfering with the subtype ones. Inheritance
1527 is tricky in C. And that's a kind of reverse inheritance with one class
1528 derivating two classes. Or maybe a game with java interfaces. Anyway,
1529 that's damn hard in C (at least).
1530 Moreover, I got tired while trying to ensure plugin separation and
1531 genericity in SG mode. MSG wants me to do weird things, so let's go for
1532 cruel hacks (temporarily of course ;).
1533 See comment in transport_private.h:71
1534 - do not include all the _interface headers in private but in the files
1535 which really need them (to cut the compilation time when they are
1538 2004-07-26 Martin Quinson
1539 Version 0.3 (protocol not changed; ABI changed)
1540 - Major overhault of the datadesc interface to simplify it:
1541 - shorted the function names:
1542 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
1543 - add a trivial way to push/pop integers into the cbps without malloc.
1544 This allows to make really generic sub_type description, which simply
1545 pop their size of the stack.
1546 - add a function gras_datadesc_ref_pop_arr() which does what users want
1547 most of the time: Declare a dynamic array (which pops its size of the
1548 stack) and declare a reference to it. Poor name, but anyway.
1549 - kill the post-send callback, add a post-receive one
1551 2004-07-23 Martin Quinson
1552 Version 0.2 (protocol changed; ABI changed)
1553 - add some testing for cpbs in the test cases, and fix some more bugs.
1554 This invalidate again the little64 data file, since I cannot regenerate
1556 - remove an awfull optimization in the logging stuff, allowing me to:
1557 - understand it again
1558 - learn gcc how to check that the argument match the provided format
1559 - fix all errors revealed by gcc after that
1560 - internal keys of dict are not \0 terminated. Deal with it properly in
1561 loggings instead of segfaulting when the user want to see the logs :-/
1563 2004-07-22 Martin Quinson
1564 - Fix some stupid bug preventing cbps (callback postit) from working
1566 2004-07-21 Martin Quinson
1567 - Some documentation cleanups
1568 - remove the useless last argument of msgtype_declare
1569 - rename the Virtu functions to fit into the 'os' namespace
1570 - move headers src/include -> src/include/gras/ and stop fooling with
1571 gras -> . symbolic link
1572 - make distcheck is now successful
1574 2004-07-19 Martin Quinson
1576 - Build shared library also
1577 - Install html doc to the right location
1578 - stop removing maintainer files in make clean
1579 - build tests only on make check
1581 2004-07-13 Martin Quinson
1583 - No major issue in previous version => change versionning schema
1584 - Re-enable little64 convertion test now that Abdou kindly regenerated the
1585 corresponding dataset.
1587 2004-07-11 Martin Quinson
1589 - Get it working with any kind of structure (we can compute the padding
1590 bytes remotely for all the architectures I have access to)
1591 - Implement the structure parsing macro (still not quite robust/complete)
1592 - Improvement to the remote testing toysuite
1594 2004-07-10 Martin Quinson
1595 [autoconf mechanism]
1596 - get ride of a bunch of deprecated macros
1597 - actually run the test for two-compliment, not only compile it :-/
1598 - test whether the structures get packed (and bail out if yes. Damn.
1599 Alignment is a serious matter)
1600 - test whether the structures get compacted (but respecting the alignment
1601 constraints of each types)
1602 - test whether the array fields of structures can straddle alignment boundaries
1604 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
1605 (took me 2 hours to find that bug, looking at the wrong place)
1606 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
1607 before sending/receiving and are used to compute the offsets of fields
1608 - Given that padding size depend even on compiler options, keep track of
1609 alignment and aligned_size only for the current architecture. Not a big
1610 deal since we send structure fields one after the other (seems
1612 - Add the datastructure used for IEEE paper by the PBIO guys to the test
1613 program, let it work on linux/gcc/little32. portability todo.
1615 2004-07-08 Martin Quinson
1616 - import and improve remote compilation support from FAST
1617 - make sure make check works on half a dozen of machines out there
1619 2004-07-07 Martin Quinson
1620 Let's say it's version 0.0.3 ;)
1621 - Implement conversions (yuhu!)
1622 - Let it work on solaris (beside conversion, of course)
1623 - Stupid me, using rand() to generate the conversion datatests in not wise.
1625 2004-07-06 Martin Quinson
1626 - Let make dist work, since I'm gonna need it to compile on remote hosts
1627 - Let Tests/datadesc_usage write the architecture on which the file was
1628 generated as first byte.
1629 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
1630 architecture descriptions.
1631 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
1632 on those architectures.
1633 - Optimization: send/recv array of scalar in one shoot
1635 2004-07-05 Martin Quinson
1636 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
1638 - Plug a whole bunch of memleaks
1639 - each process now have to call gras_{init,exit}. One day, their log
1640 settings will be separated
1641 - Continue the code factorisation between SG, RL and common in Transport.
1643 2004-07-04 Martin Quinson
1645 - Redistribution between SG and RL.
1646 We wanna have to accept in SG, so move accepted related parts of RL in
1647 the common part. (more precisely, the dynar of all known sockets is no
1648 more a static in transport.c, but part of the process_data)
1650 [gras_stub_generator]
1651 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
1653 2004-07-03 Martin Quinson
1654 - Create a new log channel tbx containing dict, set, log, dynar (to shut
1655 them all up in one shot)
1657 - Fix the ugly case of reference to dynamic array.
1658 - New (semi-public) function gras_datadesc_size to allow the messaging
1659 layer to malloc the needed space for the buffer.
1661 - gras_socket_close now expect the socket to close (and not its address to
1662 put NULL in it after it). This is because the socket passed to handlers
1663 is one of their argument (=> not writable).
1665 - propagate the interface cleanup from last week in datadesc, ie remove a
1666 superfluous level of indirection. User pass adress of variable
1667 containing data (both when sending and receiving), and not of a variable
1668 being a pointer to the data. Let's say that I like it better ;)
1669 The price for that is constructs like "int msg=*(int*)payload" in
1670 handlers, but it's a fine price, IMHO.
1672 - Let it work in RL (yuhu)
1674 2004-06-21 Martin Quinson
1676 - porting SG plugin and SG select to new standards (works almost).
1677 - plug memleaks and fix bugs around.
1680 - cleanup the prototype of data recv and force users to specify when they
1681 want to handle references to objects. Test case working even for cycles.
1682 - plug memleaks. Valgrind is perfectly ok with this.
1684 2004-06-12 Martin Quinson
1686 - cleanup the separation between plugin and main code in plugin creation
1688 2004-06-11 Martin Quinson
1690 - Reput hook for raw sockets, needed for BW experiments
1691 - kill a few lines of dead code
1692 [Data description] Interface cleanup
1693 - gras_datadesc_by_name returns the searched type or NULL.
1694 That way, no variable is needed to use a type desc once, which makes
1696 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
1697 two parameters were strings (field name, type name), leading to
1699 [Dicos] Interface cleanup
1700 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
1701 This is consistant with the dynar API.
1703 2004-04-21 Martin Quinson
1705 - Porting to new standards.
1707 - interface cleanup.
1708 There is no bag anymore, no need to take extra provision to mask the
1709 pointers behind "ID".
1710 Better splitup of functions between files create/exchange/convert.
1711 This is still a bit artificial since convert and receive are so
1712 interleaved, but anyway.
1714 - add a queued message list to procdata (the ones not matching criteria
1716 - factorize some more code between SG and RL wrt procdata
1718 - use gras_exit in example to track memleaks
1719 - get rid of gs_example now that GS is properly integrated into gras
1720 - update run_test to integrate the lastest tests (datadesc)
1722 - rename WARNINGn macros to WARNn since it prooved error-prone
1724 2004-04-19 Martin Quinson
1726 - register init/exit functions within gras module mechanism
1727 - send/receive function.
1728 Convertion is not implemented, but short-cutted if not needed.
1729 struct/array elements are sent one by one (instead of block-wise), but
1730 nobody really cares (yet). Get a prototype before optimizing.
1731 - tests (using a file socket) for DD send/receive on:
1732 - base types: int, float
1733 - array: fixed size, string (ie ref to dynamic string)
1734 - structure: homogeneous, heterogeneous
1735 - chained list, graph with cycle
1736 Believe it or not, valgrind is not too unhappy with the results. The
1737 cycle happily segfaults, but the others are ok. And I'm sick of pointers
1741 - Bugfix when using a filename explicitely (instead of '-')
1743 2004-04-09 Martin Quinson
1745 - factorize more code between RL and SG in socket creation
1746 - Complete the implementation and tests of:
1748 o file (only in RL, and mainly for debugging)
1750 I lost 3 days to design a portable address resolver, and then decided
1751 that the prototype mainly have to run on my box.
1752 Addressing portability too early may be like optimizing too early :-/
1754 - use gras_init in the Tests instead of the crappy parse_log_opt
1755 (the latter function is removed)
1756 [Conditional execution]
1757 - New functions: gras_if_RL/gras_if_SG (basic support for this)
1758 [Code reorganisation]
1759 - Get rid of libgrasutils.a since it makes more trouble than it solves.
1760 Build examples against the RL library, since there is no way to disable
1761 its creation for now.
1763 For information, the beginning of coding on GRAS was back in june
1764 2003. I guess that every line has been rewritten at least twice since