1 SimGrid (3.3.5-svn) unstable; urgency=low
3 The "C spoken, se habla Java, Ruby 話せます, fala-se Lua" release.
5 Java Bindings: Various Cleanups
6 * Remove put/get: no need to export deprecated interface in Java
7 Use send/receive instead.
8 * Cleanup the examples and add a README per directory
9 * Remove example autoDestination (that's the only way to go now)
10 * Remove example explicitDestination (was a plain copy of basic)
11 * Make JniException a runtime exception, so that there is no need to
12 declare the fact that you may encounter such a beast. I guess that
13 nobody will ever want to survive such error.
14 * Create specific errors for each MSG case of failure:
15 host failure, transfer failure, timeout, task cancelled
16 * Cleanup the exceptions that may get thrown by each function
17 * Other internal cleanups in Java bindings. Performance still bad :/
18 Ruby and Lua Bindings: create them
19 * That's new and great, you should try them out.
20 Same functionalities than Java bindings, only even less polished
22 * Kill the useless "rate" argument of SD_task_get_execution_time()
23 Everyone used to provide -1 as a value, it was not used, and the
24 semantic of a possible use wasn't even clear.
25 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
26 either as comm costs or compute costs to mean that there is no
27 such thing for that specific task.
28 * Fix SD_task_unschedule() on typed tasks
29 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
31 * In trace replay, allow to have one trace file per process.
32 Give the specific trace file as argument of each process,
33 and call MSG_action_trace_run(NULL)
34 You can still have one merged file for each processes.
35 * Kill the MSG_paje_output() function. It's a noop since 2 years.
36 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
38 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
39 * Add a MSG_task_set_data() function
40 * About trace replay (see examples/msg/actions):
42 - Allow to work with splitted trace files for each process
43 - Fix implementation of collective operations
45 * This is the first release of SimGrid where SMPI is not considered
46 beta anymore (even if some corners should still be improved)
47 * Port over the new SIMIX_network submodule (internal refactoring)
48 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
49 * Implement more missing elements of the standard:
51 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
53 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
54 MPI_Scan() MPI_Get_processor_name()
55 - Added implementation of missing case for Alltoall (warning: it's
56 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
57 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
58 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
61 - MPI_Waitsome() was broken
62 - Allow relative includes in smpicc
63 - Command line cfg argument 'reference_speed' was ignored...
64 - Some functions did not properly lead to auto-benching of user code
65 - smpicc passes -O2 by default (just like openmpi one)
67 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
68 * add SIMIX_message_sizes_output() as a pimple to write to file the
69 amount of messages per size. Use gnuplot to get histogram.
70 Pimple because that's the only user-visible function of simix,
71 defined directly in xbt.h (irk, sorry)
73 - Add a SIMIX_sem_get_capacity() function
74 - Fix interactions with processe resume/suspende
75 - release_forever() was stupidly broken
76 - Fix SIMIX_display_process_status() for processes in a semaphore
77 - Make SIMIX_sem_block_onto() user-visible
78 * Refactoring context stuff:
79 - Use pseudo-OOP for better modularity
80 - reimplement SIMIX_process_kill() without process_schedule() so
81 that the latter can take as invariant that it is called from
83 - Merge context_start into context_new for sake of simplicity
85 * Rename configuration variables to start a hierarchy:
86 o cpu_model -> cpu/model
87 o network_model -> network/model
88 o workstation_model -> workstation/model
89 * New configuration variables:
90 o network/bandwidth_factor: correction to bandwith
91 o network/latency_factor: correction to latency
92 o netwotk/weight_S: correction to the weight of competing streams
93 * Add a long description to the models, that users can see with such
94 argument on the command line: --cfg=cpu/model:help
95 * --help-models display the long description of all known models
97 * config: add the ability to set a default value after registration
98 Does not override any previously set value (e.g. from cmd line)
99 * dict: allow to have integer key and data.
100 When so, you need to use the following functions
101 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
102 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
103 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
104 In contrary to regular dicts, the key is not malloced before copy.
105 Mixing scalar and regular elements in the same dict is not tested
107 * Allow to use xbt_dynar_shrink() to expend the dynar instead
108 Tracing for Visualization:
109 * SimGrid is now instrumented in order to generate a trace file for
110 visualization analysis: to use it, need to compile SimGrid with the
111 "tracing" option enabled, and instrument the program using SimGrid with
112 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
113 (among other functions).
114 * The instrumentation only traces the platform utilization for now
115 * Documentation to use the tracing functions and how to analyze the
116 traces with the Triva tool is written.
117 * More information about: SimGrid FAQ (in the section Tracing Simulations
120 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
123 SimGrid (3.3.4) stable; urgency=low
125 The "Desktop Grid needs love too" release (also called Xmas release).
128 * Major speedup in the maxmin system solving by using lazy evaluation
129 Instead of solving completely the maxmin system at each iteration,
130 only invalidate (and recompute) the modified parts.
131 This new feature is enabled in default models but you can try to
132 turn it on with "--cfg:maxmin-selective-update=1" for other models.
133 * Cas01 IMproved as default CPU model
134 This CPU model is the same Cas01 model, but it uses the
135 maxmin-selective-update flag and a heap structure to manage
136 actions on SURF kernel.
137 It reduces the complexity to find the next action to finish and,
138 consequently, it's faster than the old Cas01.
139 This is the new default CPU model (Cas01).
140 * Rename the old Cas01 model to Cas01_fullupdate
141 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
142 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
143 * CpuTI (CPU Trace Integration)
144 A new CPU model whose objective is simulate faster when using
145 availability trace files.
146 Instead of using a full featured, over engineered maxmin system for
147 CPU modeling, this model does the pre-integration of traces files
148 to calculate the amount of CPU power available, and so, executes
149 faster than the old CPU models.
150 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
151 * Use LV08 as default network model since it gives better accuracy
152 for small messages and shouldn't change things for big ones.
153 Use --cfg=network_model:CM02 to get the previous behavior.
156 ******************************************
157 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
158 ******************************************
159 * The new CPU model may changes simulations!
160 The point is that events occurring at the exact same timestamp
161 are not scheduled in the same order with the old and new
162 version. This may be enough to completely change the execution
163 of simulations in some cases.
164 * The new network model will change simulations!
165 This new model is more realistic than the previous one, so you
166 should consider redoing your old experiments with this model.
167 Sorry for the inconvenience.
170 * Introduce the supernovae compilation mode
171 When compiled that way, the whole SimGrid (or almost) is put in a
172 single compilation unit and compiled in one shoot.
173 This is to help gcc which has difficulties to inline stuff from one
175 The speedup seem to be above 15%, althrough more tests are needed on
176 amd64 to confirm that gain.
179 * Port of MSG's mailbox on top of SIMIX network
180 The put/get mechanism was greatly simplified on the way.
183 * New SIMIX network module. Provides:
184 - Mailbox: rendez-vous mecanism to find with who you want to speak
185 - Synchronous send/recv: easier and hopefully faster since the
186 logic is handled in the maestro process directly now
187 - Asynchronous send/recv: you dreamt of it? It's here now
188 Too bad that nobody cared enough to propagate the change to MSG.
189 * Add semaphores as SIMIX synchronization mechanism.
192 * new function SD_daxload(char*) to load a DAX file
193 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
194 * Introduce typed tasks. Specify its kind and cost at creation.
195 At scheduling, just give where it should be placed, and the cost
196 for each involved resource is automatically computed.
197 Existing constructors so far (more to come of course):
198 - SD_task_create_comm_e2e() for end-to-end communication
199 - SD_task_create_comp_seq() for sequential computation
200 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
201 * new function SD_task_dump() for debuging display
202 * new function SD_task_dotty(task,FILE*) writing to file the info
203 about the task in dotty format
204 * SD_task_dependency_exists() can now cope with having one of its
205 arguments NULL. If so, it tests whether the other argument has any
207 * Add getters on list of preceding/following tasks:
208 SD_task_get_parents(task) and SD_task_get_children(task)
209 * Add getters on amount of workstations and list:
210 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
211 * Add getter on task kind: SD_task_get_kind(task)
212 * Update the start_time and finish_time of tasks on completion/failure
213 * Bugfix: Remove task from state swags when destroyed
216 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
219 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
220 dynar with one separate thread per value of the dynar.
221 * Change the prototype of xbt_thread_create(), sorry.
222 Added a boolean parameter indicating whether we want to join this
223 thread (used in SG only for now)
224 * Implement xbt_thread_join and xbt_thread_yield in SG also.
227 * GTNetS wrappers should now be usable again (and betterly tested too)
228 * Fix a major regression from 3.2 where the timeout provided to
229 MSG_task_put_with_timeout() was used as absolute time before which
230 the comm should be done.
231 * Start to fix the <cluster> tag.
232 - Internal links should be good now (beside of the loopback, which
233 use the private link instead)
234 - paths to the external world is still rather broken
235 - the <route:multi> tag is just broken. Actually that's brain-dead.
236 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
237 to make it less stupid
238 ** Check your platform with teshsuite/simdag/platforms/flatifier **
239 * Fix a source-level compatibility glitch from 3.2: after defining
240 MSG_USE_DEPRECATED, you can use the old name
241 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
242 * Allow to compile from the SVN with automake 1.11
243 * Fix some problems when using the "start_time" tag in deployment XMLs.
244 * Fix #8569: XBT/synchro.h has redundant declarations
245 * Fix #8563: MSG return values and exceptions
246 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
247 * Integrate patch #8636: Obey DESTDIR when installing documentation.
248 Thanks to Robson Peixoto.
249 * Fix a vicious bug in dictionaries inducing that some elements were
250 not freed on xbt_dict_free()
252 Portability report of this version:
253 * Main portability targets:
254 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
256 - mac leopard on i386
257 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
258 but nothing critical.
259 * Other platforms: windows, AIX and others were not tested for this release
261 Timing report of this version:
262 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
263 scenario parameters). From 8h to a few seconds in desktop grid settings.
264 * Supernovae brings about 25% speedup on i386.
266 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
268 SimGrid (3.3.3) stable; urgency=low
270 The "Need for Speed" release.
272 The timings done to validate the 3.3.2 were faulty.
273 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
275 The problem was a conversion from a manually handled vector to
276 xbt_dynar_t on the critical path.
277 xbt_dynar_foreach calls functions, inducing stack management crap.
279 We inlined these functions and xbt_dynar_foreach is now breath taking.
280 We also inlined xbt_swag_belong on the way.
282 Here are some approximate speedup measurements (on master/slaves
283 simulations lasting between 10s and 20s each):
284 3.3.1 -> 3.3.2: about same performance
285 3.3.2 -> 3.3.3: 40% speedup
286 3.3.1 -> 3.3.3: 40% speedup
287 3.3.1 with inline patch -> 3.3.3: 30% speedup
289 Our reading is that the refactoring which occurred in 3.3.2 made us
290 suffer much more from the xbt_dynar_foreach low performance, but
291 once we solved this, this refactoring proved to be very performance
292 effective. From the 40% speedup, somehow, 10% are due to the
293 inlining and 30% to the refactoring.
295 That's a pitty that gcc cannot inline functions placed in other files
296 alone. We have to choose between:
297 - break the encapsulation (by putting private data structures and
298 accessors in headers files to help gcc)
299 - live with low performance
300 - switch to a decent compiler such as icc (not quite possible).
302 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
304 SimGrid (3.3.2) stable; urgency=low
306 The "Simplicity does not preceed complexity, but follows it" release.
308 The main contributors of this release were (lexical order):
309 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
312 * Extract the routing logic into its own object.
313 (was dupplicated in network.c and workstation_LV07.c;
314 Allows to implement other ways of storing that info)
315 => kill now useless network_card concept
316 - Use dynar to represent routes (instead of void** + int*)
317 - kill link_set (use surf_network_model->resource_set instead)
318 - Add a command-line option to choose the routing schema to use
319 - Add three new models:
320 * Floyd (shortest path computed at initialization)
321 * Dijikstra (shortest path recomputed all the time)
322 * Cached Dijikstra (shortest path computed on need)
323 All these models where contributed by Silas De Munck, and are
324 described in his ICCS09 paper.
326 * Simplify model declaration
327 (less redirections, less function to write when defining a model)
328 - Factorize stuff between models:
331 surf_model_resource_set(model)
332 surf_model_resource_by_name(model, name)
333 - Unify the types of models in s_surf_model_t (using an union)
334 - Embeed fields of common_public directly into s_surf_model_t
335 - Rename model methods:
336 action_free ~> action_unref
337 action_change_state ~> action_state_set
338 action_get_state ~> action_state_get
339 - Change model methods into functions :
340 (model)->common_public->action_use ~> surf_action_ref
342 * Implement a generic resource; use it as ancestor to specific ones
343 (allows to kill duplicated code in models)
344 Drawback: timer command don't need no name nor properties;
345 workstation_CLM03 don't need no properties
346 (but I guess we can live with those few bytes wasted)
348 * Improve the action object model
349 - implement a constructor avoiding dupplicated code about field
350 initialization in generic_action part.
352 * Kill the SDP model: it has an external dependency, is deprecated
353 in flavor of modern lmm models, and didn't compile since a while
356 * Relocation of the context module from XBT to SIMIX.
357 (the context were decoupled from the simix processes, duplicating a lot of code)
358 => a lot of code was factorized
359 - less overhead is introduced during scheduling
360 - simpler API for the context factory
361 - the logic for process creation,destruction and manipulation was simplified
362 * Simplification of the s_smx_process_t data structure.
363 => accesing the simix level data associated to a process is faster now,
364 and the code is a lot more readable.
367 * Implement some more MPI primitives:
368 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
369 -implementation: Bcast: flat or 2-ary tree (default),
372 Allreduce: Reduce then Bcast
373 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
374 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
375 Alltoallv: flat tree, like ompi
377 * Add support for optimized collectives (Bcast is now binomial by default)
378 * Port smpirun and smpicc to OS X
381 * Kill SD_link_get_properties: hard to maintain and makes very little sense
382 Shout out if you used it.
385 * Display the list of still queued messages in SG mode when existing
389 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
390 * Add xbt_graph_node_get_outedges() [Silas De Munck]
391 * Add xbt_str_from_file(FILE*)
392 * Add xbt_dict_get_key achieving a linear reverse search
393 * Remove the context module
395 Portability report of this version:
396 * Main portability targets:
397 - Linux(debian)/x86/context
398 - Linux(debian)/x86/pthreads
399 - Linux(debian)/amd64/context
400 - Linux(debian)/amd64/pthreads
401 On these, we still have the eratic breakages of gras/pmm and
402 amok/saturate_sg reported in previous version. We still think
403 that the tests are the cause of the fault, not the tested code.
405 - Mac OSX Leopard/x86/context
406 Still false negative in tesh autotesting.
407 Smpi still fails, but this time because readlink does not accept -f
408 Everything seems to work properly beside of that.
411 - AIX version 5.3 (only tested contexts this time)
412 Smpi still fails there because mktemp is not installed.
413 Everything seems to work properly beside of that.
415 I managed to compile it for the first time, but several breakages.
416 Won't delay the release for this exotic platform.
418 * Windows: it's still lagging behind. If you want to help, please
421 Timing report of this version:
422 This version seem to be more than 5% faster than 3.3.1 (on linux
423 64bits with contextes). The gain is less than expected, we are
424 investigating this for next release.
426 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
428 SimGrid (3.3.1) stable; urgency=low
431 * Implement a --cfg-help to show existing configuration variables
432 * Build chain do not require doxygen in maintainer mode
435 * fix a bug on struct sizeof computation, which prevented the
436 exchange of arrays of structs in some conditions
437 - added a regression test about this in datadesc_usage
438 * Allow the exchange of 0-long dynamic vectors.
439 - for that, use -1 as indicator of dynamic size instead of 0
440 - This implied to change any size from unsigned long to long,
441 reducing a bit communication abilities, but I guess that with
442 64bits being quite common, this is more than enough.
443 - This also induce a protocol change, thus bumping network protocol
444 version from 0 to 1 (if we have external users, we have to get
445 clean on that point too ;)
446 - added two regression tests about this in datadesc_usage
447 * Be more verbose when propagating local exceptions
448 This helps debugging.
449 * Display the status of simulated processes when receiving SIGINT in
453 * Allow to control the simulation from a trace file.
454 New functions MSG_action_register() and MSG_action_trace_run()
455 The first one allows to associate a function execution to each
456 kind of action while the second one parses a trace file and
457 triggers the corresponding actions within the system.
458 For now, only a toy example is provided in examples/msg/actions
459 * Add an exemple of process migration in examples/msg/migration
460 * Fix a bug in task exchange which broke MSG_task_get_sender()
461 Add a teshsuite regression test for that.
462 [Bug: if MSG_task_get_sender() is called after sender exit,
464 * Fix a bug which prevented suspend/resume to work properly
465 * Display the status of simulated processes when receiving SIGINT
466 This fixes a regression of v3.3. due to the introduction of SIMIX
467 * Bug fixing in failure management:
468 - trace could not start by a failure at time 0
469 - failure during communications were not working
472 * Add SIMIX_process_set_name() to change the name of the current
473 process in the log messages.
474 * Store smx_hosts in a dict since we only retrieve them by name
475 * Move the configuration infrastructure to surf
478 * Move the configuration infrastructure to surf
481 * Massive internal cleanups:
482 - Store internal structures on processes instead of hosts (allows
483 to have more than one process per host, in addition of being more
485 - Cleanup the initialization/finalization process
486 - Kill a whole bunch of unneeded synchronization:
487 processes run in exclusive manner within the simulator
488 - Move queues from global tables to process data fields
490 - now accept -platform and -hostfile arguments
491 - Pass the right rank value to processes according to the hostfile
492 * Compile the examples by default, and use them as regression tests
493 * Implement MPI_Wtime()
494 * Change the reference speed to a command line option
497 * TCP_gamma can now be specified as command line option using
498 --cfg=TCP_gamma:10000000.0
499 * Change the --surf-path cmd line option into --cfg=path:
502 * Also include strbuff from xbt.h public header
503 * xbt_ex_display(): do not free the exception after displaying
504 This allows to do more with the given exception afterward.
505 Users should call xbt_ex_free() themselves.
509 Portability report of this version:
510 * Main portability targets:
511 - Linux(debian)/x86/context
512 - Linux(debian)/x86/pthreads
513 - Linux(debian)/amd64/context
514 - Linux(debian)/amd64/pthreads
515 These targets fail about 1/10 of times on gras/pmm, but we believe
516 that this is because of the test, not because of simgrid.
517 amok/saturate_sg fails even more rarely, and the test may not be
520 - Mac OSX Leopard/x86/context
521 The test suite still spits tons of errors because some obscure
522 force prevents us from removing the temporary directories
523 arguing that they still contain some metadata I've never heard of.
524 Smpi fails because seq is not installed.
525 Everything seems to work properly beside of that.
528 - AIX version 5.3 (both contexts and pthread)
529 Smpi still fails there because mktemp is not installed.
530 XML inclusions seems rosty on AIX.
532 * Windows: it's still lagging behind. If you want to help, please
535 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
537 SimGrid (3.3) stable; urgency=high
541 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
544 * Introduce the SIMIX module: factorize code between MSG and GRAS.
547 Until now, GRAS were using MSG as an interface to SURF. It was
548 quite difficult because both interface have several differences
549 (MSG channels vs GRAS sockets were the most notable point).
551 This also opens the gate to SMPI (which should occur soon) and speed
552 up simulations by to 40% (even if it were not the main goal).
554 **************************************
555 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
556 **************************************
557 The point is that events occuring at the exact same timestamp are
558 not scheduled in the same order with the old and new version. This
559 may be enough to completely change the execution of simulations in
560 some cases. Sorry for the inconvenience.
562 * Cleanup and upgrade the XML format to push further scalability
563 issues (check http://hal.inria.fr/inria-00256883/ for more info)
565 * Improve the testing infrastructure with tesh. Now a very large part of
566 the code is tested not only by being run but also by checking that the
567 output match an expected output [Mt].
569 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
570 is really less memory-demanding, which should allow you to use
571 larger files in SimGrid [AL].
573 * Inform valgrind about our contextes, so that it becomes usable
574 with the default (and more effecient) version of SimGrid
575 [contributed by Sékou Diakite, many thanks]
578 * Introduce a listener thread in charge of receiving incomming
579 messages from the network. It allows to overlap communication and
580 computation but most notably, it removes some stupid deadlocks due
581 to the fact that so far, a process could not send and receive at
582 the same time. This made most non trivial communication schema
584 * Convert the PIDs from long int to int to match the MSG ones (and
586 * New function: gras_agent_spawn() to launch a new process on
587 current host. Only working in simulation for now. [Mt]
588 * New function: gras_os_hostport() returning a constant form (ie,
589 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
592 * Make the backtrace of exceptions more human readable [Mt]
593 * New module: xbt/str [Mt]
594 a ton of string utility functions (split, join, printf to a newly
595 allocated buffer, trim, etc)
596 * New module: xbt/hash [Mt]
597 SHA1 hashing algorithm (more to come if needed)
598 * New module: xbt/synchro [Mt]
599 synchronization tools (mutex and conditions) working the same way
600 in simulation and in real life (mainly useful for GRAS, but not
602 * New module: xbt/queue [Mt]
603 classical producer/consumer synchronization scheme
604 * xbt_dynar_new_sync() creates a synchronized dynar. All access
605 (using the classical functions will get serialized) [Mt]
606 * Make dictionary internal table dynamic. No need to specify its size
607 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
609 * Make sure the log channels are organized as a tree under windows
610 (because of ANSI C compatibility issue, any channel were child of
614 * Cleaned many thing in surf and fixed a few bugs [AL].
615 * Add a nice command line configuration mechanism to compose models [AL].
616 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
617 the previous one (KCCFLN05). It relies on something that looks like
618 a max-min sharing mechanism but cannot be written as such. A new solver
619 was thus designed [AL].
620 * Add a new solver to lmm. Based on Lagrange optimization and
621 gradient-based descent, it enables to efficiently maximise systems s.a
623 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
625 This solver enables to propose two new network models for TCP Reno and
626 TCP Vegas based on Low's work. These models still need to be fully
627 tested though [Pedro Velho].
630 * Bug fix in SD_simulate. Now the time bound given as argument is
632 * Use the new parallel task model (ptask_L07) as default.
633 * Use the SURF command line configuration mechanism.
634 * 0-size tasks (for synchronization) should now work.
636 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
638 SimGrid (3.2) stable; urgency=high
642 We still experience issues on this platform, but we believe that at
645 GRAS API BREAKAGE (for simplification purpose, sorry):
646 * the gras_msgtype_by_name is not used anymore. Instead of
647 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
648 you can write (and must)
649 gras_msg_send(toserver, "request", &request);
650 - If you still want to pass a gras_msgtype_t to the function (to cache
651 the type and avoid the lookup time), use the gras_msg_send_() variant.
652 - Impacted functions:
653 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
654 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
655 * The callbacks are now expected to return 0 when everything went well
656 (just like the main() function)
658 GRAS new features and improvements:
659 * New module mecanism where user code can use per process globals [Mt]
660 This is similar to gras_userdata_*() functions, but for libraries. It
661 factorize some code developped over and over in the examples and AMOK.
662 It has still to be documented and used (only amok/peermanagement is
664 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
665 loss when they were small enough to fit into the buffer and sent quickly
666 enough so that they can all get received in one shoot.
667 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
668 if not found. Use the *_or_null() variant for the old semantic.
669 * In gras_msg_handle, do not discard messages without callback.
670 They are probably messages to be explicitly awaited later (ie, proofs of
671 mis-synchronization in userland since they are sent before being awaited)
673 * gras_socket_meas_send/recv: semantic changed!
674 The numerical arguments used to be (1) the total amount of data to send
675 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
676 messages. This was need for the fool willing to send more than MAXINT
677 bytes on quite fat pipes.
680 * Do really rename the hostmanagement module to peermanagement. [Mt]
681 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
682 but this is rather new and this was documented in the module
683 documentation (poor excuses, I admit)
684 * Bandwidth measurement semantic changed! This follows the changes to
685 gras_socket_meas_send/recv explained above.
688 * A sequential mode has been added to the workstations. When a workstation
689 is in sequential mode, it can execute only one task, and the other tasks
690 are waiting in a FIFO. [Christophe Thiery]
693 * The KCCFLN05 workstation model now handles parallel tasks. It is the
694 model for SIMDAG. [Christophe Thiery]
695 * Bug fix in the maxmin solver: Some values were close to 0 instead of
696 equal to 0, which caused some bad behaviors in
697 saturated_constraint_set_update. I now use a threshold mechanism like in
701 * When running manually src/testall, you select specific units [Mt]
702 testall is the result of our cunit mecanism, and should replace all
703 the scripty thingy around since bash don't run easily on billware.
705 * A mallocator system has been added. [Christophe Thiery]
706 Mallocators allow you to recycle your unused objects instead of freeing them
707 and allocating new ones.
709 Documentation update:
710 * FAQ reworking + New FAQs:
711 - "Valgrind spits tons of errors!" [Mt]
712 - "How to repport bugs" [Mt]
713 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
714 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
715 - Communication time measurement within MSG [AL]
716 - I experience weird communication times when I change the latency [AL]
719 - an introduction to the framework and to the used communication model
720 - an initiatic tour introducing the most proheminent features:
722 . Lesson 0: Installing GRAS
723 . Lesson 1: Setting up your own project
724 o Part 2: Message passing
725 . Lesson 2: Exchanging simple messages
726 . Lesson 3: Passing arguments to the processes (in SG)
727 . Lesson 4: Attaching callbacks to messages
728 . Lesson 5: Using globals in processes
729 . Lesson 6: Logging informations properly
730 . Lesson 7: Using internal timers
731 . Lesson 8: Handling errors through exceptions
732 . Lesson 9: Exchanging simple data
733 . Lesson 10: Remote Procedure Calling (RPC)
734 . Lesson 11: Explicitely waiting for messages
735 . Recapping of message passing features in GRAS
736 - A HOWTO section containing:
737 o HOWTO design a GRAS application
738 More are due, of course. They will come latter. In the meanwhile, you can
739 check the examples which are still here.
741 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
743 SimGrid (3.1) stable; urgency=high
747 There was a stack corruption somewhere, visible only when optimizing
748 with these versions. [Vince]
751 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
752 module that enabled to play with Directed Acyclic Graphs. It is built
753 directly on top of SURF and provides an API rather close to the old
754 SG. Some old codes using SG are currently under rewrite to check that
755 all needful functions are provided. [Christophe Thiery]
758 * Complete rewrite of the KCCFLN05 workstation model. It is now an
759 extension of the classical CLM03 model that gracefully handles
760 failures. This is now the default model for MSG and GRAS. It doesn't
761 handle parallel tasks yet though. [AL]
762 * Bug fix: Weights were not correctly set in the network part.
763 WARNING: This may have resulted in incorrect results with simulations
764 where there are more than one flow on a given link. [AL]
767 * After a (long ?) discussion on simgrid-devel, we have decided that the
768 convention we had on units was stupid. That is why it has been decided
769 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
770 WARNING : This means that all previous platform files will not work as
771 such with this version! A warning is issued to ask users to update
773 A conversion script can be found in the contrib module of the CVS, under
774 the name contrib/platform_generation/surfxml_update.pl [MQ]
777 * Bug fix: Processes were started in reverse order, wrt deployment file.
778 WARNING: if your code relies on this bug, please fix it. [AL]
779 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
780 being executed on two different locations. [AL]
781 * Bug fix: Failures are now better supported thanks to Derrick's tests
782 (there was many failure situations I hadn't thought of and that weren't
783 correctly handled). [AL]
784 * New function: MSG_host_is_avail indicates you whether a given m_host_t
788 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
789 Exception occurring on server-side are propagated back to client (!).
791 API CHANGE: the callback changed their prototype. Change:
792 int my_handler(gras_socket_t expeditor, void *payload_data) {
794 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
795 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
797 * New! function: gras_msg_handleall to deal with all messages arriving
798 within a given period.
799 * New! function: gras_socket_server_range to get a server socket in a
800 range of port numbers (ease to avoid port number conflicts) [MQ]
801 * New! gras processes display their backtrace when they get a SIGUSR1
802 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
803 Sweet to debug RL processes [MQ]
807 - Do not force experiment sizes to be expressed in kb, or it becomes
808 impossible to measure the latency this way (needs one byte-long tests)
809 WARNING: this changes the amok_bw_* function semantic. [MQ]
810 - Implements the link saturation stuff. [MQ]
811 * Peer management module:
812 New! module factorizing code that we wrote over and over [MQ].
815 * New module: cunit (my jUnit implementation in ansi C) [MQ]
816 - Test units are placed directly into the library code, they get extracted
817 automatically and placed into the src/testall binary.
818 - Convert most of the XBT tests to this system.
819 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
820 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
821 live in the same C code. This required to change a little bit the API
822 of surfxml parsing but shouldn't be an issue for end-users. [AL]
823 * New module: sparse graph structure with basic algorithms (this is work
824 in progress and the API is not considered to be frozen yet). [AL]
825 * Display more information on backtraces: source line & function names are
826 now displayed just like valgrind does (rely on addr2line tool) [MQ]
827 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
828 * Reworked a little bit some #include statements to load only required
829 headers. Some user code that relied on SimGrid to include stdlib or
830 stdio may need to include it by themselves. [AL]
831 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
833 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
834 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
835 but I guess that almost nobody used those parts. [MQ]
837 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
839 SimGrid (3.0.1) stable; urgency=low
842 * Unfortunately, I had missed 5 misnamed functions:
843 xbt_fifo_item_t xbt_fifo_newitem(void);
844 void xbt_fifo_freeitem(xbt_fifo_item_t);
845 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
846 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
847 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
848 They're now deprecated. Please use their new versions:
849 xbt_fifo_item_t xbt_fifo_new_item(void);
850 void xbt_fifo_free_item(xbt_fifo_item_t);
851 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
852 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
853 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
855 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
856 * Documentation: xbt_log module unmercifully reworked [MQ]
857 * Bugfix: there was a problem with the ending of contexts with
858 the pthread backend. It caused some weird deadlock or behavior
859 depending on the pthread implementation. [AL]
860 * Bugfix: get the exceptions raised in the simulator repport where
861 and why they come from when they are not catched in time [AL, MQ]
864 * Bugfix: Do repport the error when two non-connected hosts try to
865 exchange data (Thanks to Flavien for stumbling into this one) [AL]
868 * Add additionnal checkings on communications. Assert that two
869 communicating hosts are connected by a set of links... [AL]
872 * Add additionnal checkings on channel values in communication [AL]
873 * New: MSG_task_get_source to see on which host a task was generated [HC]
874 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
875 the number of tasks waiting to be received on channel and sent
877 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
878 waits for the first task coming from a given host.. [AL]
880 GRAS new functionnalities: [MQ]
881 * Enhance the parsing macro to allow the size of multidimentional objects
882 to be given thru annotations.
883 * New example (and documentation): Matrix Multiplication a la RPC
884 (as when I was young!) and fix a bunch of bugs found on the way.
886 GRAS performance improvements: [MQ]
888 * Reduce the amount of cbps creation/destruction by making it static to
889 datadesc_send/recv() and using a (newly created) cbps_reset (based on
892 * Change libdata to a set so that we can search for stuff by ID (and thus
893 reduce the insane amount of dict lookups)
896 * Actually implement gras_datadesc_copy() so that we don't have to mimick
897 RL communication on top of SG since it's so uneffective.
898 It may also be used for inter-thread communication in RL, one day.
899 * Use gras_datadesc_copy() to exchange messages on top of SG
901 - improve message exchange performance on top of SG
902 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
903 * Don't exchange on the network the size of the used part of buffer,
904 instead, specify the possible buffer size to read().
906 - reduces the amount of read/write calls (one pair per exchange)
907 - reduces the amount of exchanged data (the size)
908 - allows to retrieve all arrived data on receiver side, if we don't need
909 it right now (subsequent read will peek the buffer)
910 - allows the receiver to proceed with the begining of the stream before
911 everything is arrived
912 - make it possible to build an iov transport (using readv/writev)
914 - take care of the data with non-stable storage (like stacked data),
916 * If possible, TCP send uses vector I/O (when writev() is here)
917 - Don't use it for receive since we send data sizes and data on the
918 same stream, so we wouldn't be able to chain large amount of chunks
919 before having to flush the stuff to read the size.
920 * Rework the transport plugin mecanism to simplify it and reduce the
921 amount of pointer dereferencement when searching for the right function
924 * I guess that now, we do almost as few system calls as possible while
925 doing as few data copy as possible.
927 To improve it further, we could try to send all the sizes first and then
928 all the data (to use iov on receiving size), but it's only a partial
929 solution: when you have 2 dimensional data, the sizes of the second
930 dimension is data of the first dimension, so you need 3 streams.
932 I'm not sure the potential performance gains justify the coding burden.
934 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
936 SimGrid (3.00) stable; urgency=high
939 * New! Give the possibility to hijack the surf parser and thus bypass
940 MSG_create_environment and MSG_launch_application. Have a look at
941 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
943 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
945 SimGrid (2.96) unstable; urgency=low
950 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
951 This deprecates the xbt_error_t mecanisms.
952 It modifies (simplifies) all XBT and GRAS API.
953 MSG API keeps unchanged (exceptions raised by XBT are catched from
954 within MSG and masked with existing error handling facilities)
957 * New! Add a FATPIPE model. [AL]
958 * New! Add a parallel task model. [AL]
959 * New! Add automatically a loopback interface (in the default
960 network model) if none was precised.
963 * Bugfix: MSG_process_resume now works with the current running process.
965 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
966 * Modification of MSG_task_get_compute_duration. Once a task has been
967 processed, the value returned by this function is now equal to 0. [AL]
968 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
969 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
970 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
971 of a m_task. For now, MSG_task_cancel only works with computation
973 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
974 of the processor (in Mflop/s) regardless of the current load on the
976 * API Change: use proper naming convention for MSG_getClock and
977 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
979 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
980 This function changes the priority of a computation task. This priority
981 doesn't affect the transfer rate. A priority of 2 will make a task
982 receive two times more cpu power than the other ones. This function
983 has been added to suit the needs of Nguyen The Loc and hasn't been that
984 much tested yet. So if it fails, please report it and send me your code.
986 * API Change: removed all functions and types that were marked "deprecated"
987 since many months. Renamed MSG_global_init_args to MSG_global_init.
989 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
991 SimGrid (2.95) unstable; urgency=low
994 * Steal some nice code to GNU pth to fix context detection and usage [AL]
995 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
996 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
999 * Bugfix: Allow absolute paths for platform description files [MQ]
1000 * Bugfix: do free the variables after use. Leads to drastic performance
1002 * Implement max_duration (ie, timeouts) on resources [AL]
1005 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
1007 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
1008 the needed support (timeouts) [AL]
1011 * Implement measurement sockets. You can now get the bandwidth between two
1012 hosts thanks to AMOK (see below). [MQ]
1013 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
1014 dynar over the network (yeah) [MQ]
1015 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
1016 * simple/static token-ring example. [Alexandre Colucci and MQ]
1017 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
1018 in place before [MQ]
1021 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
1022 type parsing. "short" and "long" modifiers were also ignored; other
1023 modifier (such as reference level) are still ignored. [MQ]
1024 * Embeed the buffer size within the buffer itself on SG. [MQ]
1025 That way, send() are atomic and cannot get intermixed anymore (at least
1026 the ones which are less than 100k; bigger messages still have the issue)
1027 * Array size pushed by the field, not by the field type (or each
1028 and every long int will push stuff to the cbps) [MQ]
1029 * use select() to sleep since it allows to portably sleep less than one
1032 GRAS (minor cleanups)
1033 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
1036 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
1037 * type category 'ignored' killed as it was never used and were difficult
1039 * whether a type can cycle or not is now a flag, leaving room for more
1040 flags (as "ignored", if we feel the need one day ;)
1041 * Rename raw sockets to measurement sockets since "raw" has another
1042 meaning in networking community.
1045 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
1046 and offers features not belonging to GRAS but that most applications
1047 need. One day, it may be a set of plugins loadable at runtime.
1048 * New module: bandwidth
1049 bandwidth measurement between arbitrary nodes running this module. [MQ]
1051 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
1053 SimGrid (2.94) unstable; urgency=low
1055 The first beta release of SimGrid 3 !
1059 * Update the main page and the FAQ. Adding references to gforge.
1062 * Add a gras_os_getpid function.
1065 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
1066 * Extend the logs so that they also print PID, hostname, date, ... if
1068 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
1069 and kill the old version which were in testsuite/
1070 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
1074 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
1075 for users. Instead, each programming environment (GRAS, MSG,...) use it
1076 when needed to provide such a feature to users.
1077 Don't shortcut the mecanism or you will also shortcut the virtualization
1078 you need on the simulator.
1082 * Cleanups in configury with regard to compile optimization/warning flags.
1083 Also add -fno-loop-optimize to any powerpc since it's the optimization
1084 killing gcc (< 3.4.0).
1085 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
1086 needed by MSG examples complications
1087 * Borrow configury beautifications from PHP
1090 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
1091 warning (thanks loris for stumbling into this one).
1092 * Bugfix: stop loading private headers (gras_config.h) from the public
1096 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
1097 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
1098 RL would imply a DNS resolver, which is *hard* to do in a portable way
1099 (and therefore delayed).
1100 * Implement a real timer mecanism and use it in timing macros. This allows
1101 to avoid rounding errors and get a 0.000005 sec precision in timing
1102 macros. While I was at it, various cleanups:
1103 - allow to declare more than one timed section per file (fix a stupid bug)
1104 - move some private declaration to the right place
1105 - merge conditional execution and timing macros into emulation module
1106 - document the module
1107 - make sure the module cleanups its mess on gras_exit
1108 * Documentation improvements:
1109 - (new) how to compile applications using GRAS
1110 - (new) emulation support (timing macros)
1112 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
1114 SimGrid (2.93) unstable; urgency=low
1116 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
1119 - Use Paje properly where used. Still to be sanitized properly.
1120 - Portability fix: Add an implementation of the contexts using pthread
1124 - Add xbt_procname(): returns the name of the current process.
1125 Use it to show the current process's name in all logging.
1127 - fix detection of older flex version and the reaction, since we do
1128 depend on modern ones (we use lex_destroy)
1129 - Better separation of SG and RL in the libs: remove all simulation code
1130 from libgras. As a result, this lib is now only 200k when stripped.
1131 Some of the xbt modules may also be duplicated (two sets and such) and
1132 should be cleaned/killed before SG3.
1133 - Insist on using xlC on AIX because of weird problems involving gcc there.
1134 - Cleanup the make remote stuff. This is now done by scripts
1135 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
1136 mainly for our private use, but we're working on changing them to user
1139 - Bugfix: flush the socket on close only if there is some *output*.
1140 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
1142 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
1145 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
1147 SimGrid (2.92) unstable; urgency=low
1149 Alpha 3 on the path to SimGrid 3
1153 - New! First try of benchmarking macros.
1154 - New! First try so that gras_stub_generator generate deployment and
1155 remote compilation helpers.
1157 - Bugfix: Initialization fix in msg_test.
1161 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
1163 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
1165 - API Change: gras_os_sleep to take the amount of seconds as a double.
1166 Accepting an int was error prone since it was the only location where
1167 seconds were coded as such. It leaded to damn rounding errors.
1168 - Bugfix: Hard to belive that timers ever worked before this.
1170 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
1172 SimGrid (2.91) unstable; urgency=low
1174 Alpha 2 on the path to SimGrid 3
1178 - Bug fix in the lmm_solver.
1180 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
1181 through the function MSG_paje_output.
1182 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
1183 - It is possible to bound the rate of a communication in MSG with
1184 MSG_task_put_bounded() (was already in the previous version but I had forgotten
1185 to write it in the changelog).
1186 - Bug fix to let GRAS run on top of MSG until we move it directly on top
1191 - Various cleanups to the autotools stuff
1192 - Begin to move Gras examples to examples/gras/
1193 - Let make distcheck work again (yeah!)
1195 - documentation overhauled using doxygen.
1196 gtk-doc-tools is dead in SimGrid now.
1197 - Automatically extract all existing logging categories, and add the list
1198 to the documentation (long standing one, to say the less)
1200 - Cleanup the known architecture table. Reorder the entries to group what
1201 should be, and use a more consistent naming scheme.
1202 (some of the test dataset are still to be regenerated)
1203 - New! Allow library to register globals on each process just as userdata
1205 This is implemented using a xbt_dict and not a xbt_set, so we loose the
1206 lookup time (for now).
1207 Use it in msg and trp.
1208 This cleans a lot the internals and helps enforcing privacy of the
1209 headers between the gras components.
1210 - New! Add a timer mechanism, not unlike cron(8) and at(1).
1211 - Bugfix: gras_os_time was delirious in RL.
1212 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
1214 - Reenable GRAS now that it works.
1216 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
1218 SimGrid (2.90) unstable; urgency=low
1220 Alpha 1 on the path to SimGrid 3
1222 * It is a long time since the last release of SimGrid. I'm sorry about
1223 that but as I had told you, I was rewriting a lot of things. I apologize
1224 to those who had been reporting bugs to me and that I had not answered.
1225 If your bug is still in the new version, please tell me. Here is a
1226 summary of the main changes.
1228 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
1229 lead by Martin Quinson. As a consequence SimGrid gains a lot in
1230 portability, speed, and a lot more but you'll figure it out later.
1231 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
1232 I wanted to release the new MSG as soon as possible and I have
1233 broken GRAS, which is the reason why, for now, only MSG is fully
1234 functional. A laconic description of these projects is available
1235 in the documentation.
1237 * REVOLUTION 2: I have removed SG and I am now using a new simulation
1238 kernel optimized for our needs (called SURF but only the developers
1239 should use it). Hence, MSG is now roughly 30 times faster and I think
1240 that by rewriting a little bit MSG, I could event speed it up a little
1241 bit more. Beside the gain in speed, it is also much easier to encode a
1242 new platform model with SURF than it was with SG. More to come...
1244 * REVOLUTION 3: I have tried to change a little as possible the API of
1245 MSG but a few things really had to disappear. The main differences
1246 with the previous version are :
1247 1) no more m_links_t and the corresponding functions. Platforms are
1248 directly read from a XML description and cannot be hard-coded
1249 anymore. The same format is used for application deployment
1250 description. The new format is described in the documentation.
1251 Have a look in tools/platform_generation. There is a tiny script
1252 that converts from the old platform format to the new one. Concerning
1253 the application deployment format, parsing the old one is tricky.
1254 I think most of you should however be able to convert your files. If
1255 it is really an issue, I can write a C code that does the conversion.
1257 2) the toolbox tbx does not exist anymore. We now have a library
1258 with much more data-structures but without the hash-tables (we have
1259 dictionaries that are much faster).
1261 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
1263 *****************************************************************************
1264 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
1265 * don't feel like converting the oldies. (Mt) *
1266 *****************************************************************************
1269 Version 2.90: "the long awaited one"
1270 - Finished rewriting and debugging MSG. Rewrote the documentation.
1271 - disable GRAS for now since it needs to be ported to the newest SG
1274 - Finish the port to windows (using mingw32 for cross-compile)
1277 - Main loop and datastructures of SURF. A cpu resource object is
1278 functional. Surf can thus be used to create cpu's with variable
1279 performance on which you can execute some actions.
1281 2004-11-15 Martin Quinson
1282 - Port to ARM. Simply added the alignment and size descriptions. Should
1283 work, but the ARM machines are so slow that I didn't had the opportunity
1284 to 'make check' over there yet.
1286 2004-11-15 Arnaud Legrand
1287 - Trace manager now written. It uses a heap structure and is therefore
1288 expected to be efficient. It may however be speeded up (particularly
1289 when many events occur at the same date) by using red and black
1290 trees. One day maybe...
1291 - Max-min linear system solver written. It uses a sparse matrix
1292 structure taking advantage of its expected use. Most operations are
1293 O(1) and free/calloc are called as few as possible. The computation of
1294 the minimum could however be improved by using a red and black tree
1297 2004-11-03 Arnaud Legrand
1298 - Rename every gras_* function that was in xbt/ to its xbt_
1300 - Add a heap and a doubly-linked list to xbt
1301 - Added a dichotomy to the dictionaries. make check works as well before
1302 so I assume that the patch is correct. I do not know however if things
1303 run effectively faster than before now. :)
1305 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
1306 SimGrid, and the version number is bumped to 2.x
1308 2004-10-29 Martin Quinson
1309 - Introduction of the remote errors.
1310 They are the result of a RMI/RPC on the remote machine.
1311 ErrCodes being scalar values, you can't get the host on which those
1312 errors did happen. Extending the error mechanism as in Gnome is possible.
1313 No idea yet whether it is a good idea.
1315 2004-10-28 Martin Quinson
1316 - Interface revolution: the Starred Structure Eradication.
1317 I used to do typedef struct {} toto_t; and then handle *toto_t.
1318 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
1319 - ???_t is a valid type (builded with typedef)
1320 - s_toto_t is a structure (access to fields with .)
1321 - s_toto is a structure needing 'struct' keyword to be used
1322 - e_toto_t is an enum
1323 - toto_t is an 'object' (struct*)
1325 typedef struct s_toto {} s_toto_t, *toto_t;
1326 typedef enum {} e_toto_t;
1327 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
1328 s_toto_t) is private.
1330 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
1331 so that it can set the variable to NULL. It was so for dicts and sets,
1332 it changed for dynars.
1334 - Fix a bunch of memleaks in dict_remove
1335 - Fix a bug in sg/server_socket opening: it failed all the time.
1337 2004-10-07 Martin Quinson
1338 - Speed up dynar lookup operation a bit.
1340 gras_dynar_get is dead.
1342 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
1343 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
1344 (which gives you the address of the stored data).
1346 gras_dynar_get_as is an helpful macro which allows you to retrieve a
1347 copy of the data using an affectation to do the job and not a memcpy.
1349 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
1350 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
1352 It does not really speedup the dynar test because they are
1353 setting elements all the time (and look them seldom). But the dict does
1354 far more lookup than setting.
1356 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
1358 2004-10-05 Martin Quinson
1359 - Allow to (en/dis)able the cycle detection at run time.
1361 Whether we should check for cycle or not is now a property of each
1362 datatype. When you think there may be some cycle, use datadesc_cycle_set.
1363 datadesc_cycle_unset allow to remove this property when previously set.
1365 Note that the cycle detection is off by default since it impacts the
1366 performance. Watch the data you feed GRAS with ;)
1368 This property is hereditary. Any element embedded in a structure having it
1369 set have it set for the time of this data exchange.
1371 You should set it both on sender and receiver side. If you don't set it on
1372 sender side, it will enter an endless loop. If you forget on receiver
1373 side, the cycles won't be recreated after communication.
1375 - Header reorganization.
1376 Kill gras_private.h, each submodule must load the headers it needs.
1378 2004-10-04 Martin Quinson
1379 - Interface revolution: do not try to survive to malloc failure.
1381 Now, gras_malloc and friends call gras_abort() on failure.
1382 As a conclusion, malloc_error is not a valid error anymore, and all
1383 functions for which it was the only gras_error_t return value are
1384 changed. They now return void, or there result directly.
1385 This simplify the API a lot.
1387 2004-09-29 Martin Quinson
1388 - Re-enable raw sockets.
1389 Created by gras_socket_{client,server}_ext;
1390 Used with gras_raw_{send,recv}
1393 It should allow to kill the last bits of gras first version soon.
1395 This is not completely satisfactory yet (duplicate code with
1396 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
1399 - Simplify transport plugin (internal) interface by not passing any
1400 argument to _server and _client, but embedding them in the socket
1403 2004-09-28 Martin Quinson
1404 - Finish the port to AIX.
1405 autoconf was my problem (segfault within the malloc replacement
1406 function. No idea why)
1408 2004-09-16 Martin Quinson
1409 - Fix some size_t madness on 64bit architectures.
1411 2004-09-08 Martin Quinson
1412 - Reduce the number of system headers loaded, overload some more system
1413 calls (such as malloc to cast the result of the system one, and work
1415 - Fix and reintroduce the config support
1417 2004-09-07 Martin Quinson
1418 - Source code reorganization to allow Arnaud to surf all over there.
1419 - Allow to document the logging categories.
1420 - Remove all uppercase from logging categories and useless cleanup in names.
1422 2004-08-18 Martin Quinson
1423 Version 0.6.2 (protocol not changed; API changed)
1424 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
1425 gras_error_t), and NULL when not found. Functions expecting a msgtype
1426 as argument (msg_wait; msg_send) deal with NULL argument by providing a
1427 hopefully usefull message.
1428 - Portability to prehistoric sparcs again
1430 2004-08-17 Martin Quinson
1431 Version 0.6.1 (protocol not changed; ABI not changed)
1432 - prealloc some buffers to speed things up
1434 2004-08-11 Martin Quinson
1435 Version 0.6 (protocol not changed; ABI expended)
1436 - The parsing macro can deal with the references, provided that you add
1437 the relevant annotations (using GRAS_ANNOTE(size,field_name))
1439 2004-08-09 Martin Quinson
1440 Version 0.5 (protocol not changed; ABI changed)
1441 - Allow to off turn the cycle detection code in data exchange at
1442 compilation time. It should be at run time, but I'm short of time (and
1443 the config stuff is still broken). That way, we keep dict out of the
1444 critical path, which is good because the performance is poor:
1445 - search not dichotomial yet
1446 - dynar give no way to access their content and memcpy everytime
1447 - In composed data description (struct, ref and so on), stop foolness of
1448 keeping the subtype's ID, but store the type itself. This keeps sets out
1449 of the critical path, which is good since they rely on dynar and
1450 dictionnaries. The only loose of that is that we cannot detect the
1451 redeclaration of a structure/union with another content (but I'm not sure
1452 the code detected well this error before anyway). We still can detect
1453 the redefinition discrepancy for the other types.
1454 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
1455 it breaks the code because of type-punning used all over the place).
1456 This breaks on all non-gcc architectures (for now).
1458 All those changes (plus the buffer of last time) allow me to gain 2 order
1459 of magnitude on cruel tests consisting of 800000 array of integers on two
1460 level of a hierarchical structure (200 secondes -> 4 secondes)
1463 - the selector of reference must now return the type it points to, not
1464 the ID of this type.
1466 2004-08-06 Martin Quinson
1467 Version 0.4 (protocol changed; ABI not changed)
1468 - Allow to pass --gras-log argument to processes in simulation mode. Really.
1469 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
1470 - Implement a buffer transport, and use it by default (it relies on tcp in
1471 real life and on sg in simulation).
1472 That's a bit hackish since I had a new field to the structure to store
1473 its data without interfering with the subtype ones. Inheritance
1474 is tricky in C. And that's a kind of reverse inheritance with one class
1475 derivating two classes. Or maybe a game with java interfaces. Anyway,
1476 that's damn hard in C (at least).
1477 Moreover, I got tired while trying to ensure plugin separation and
1478 genericity in SG mode. MSG wants me to do weird things, so let's go for
1479 cruel hacks (temporarily of course ;).
1480 See comment in transport_private.h:71
1481 - do not include all the _interface headers in private but in the files
1482 which really need them (to cut the compilation time when they are
1485 2004-07-26 Martin Quinson
1486 Version 0.3 (protocol not changed; ABI changed)
1487 - Major overhault of the datadesc interface to simplify it:
1488 - shorted the function names:
1489 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
1490 - add a trivial way to push/pop integers into the cbps without malloc.
1491 This allows to make really generic sub_type description, which simply
1492 pop their size of the stack.
1493 - add a function gras_datadesc_ref_pop_arr() which does what users want
1494 most of the time: Declare a dynamic array (which pops its size of the
1495 stack) and declare a reference to it. Poor name, but anyway.
1496 - kill the post-send callback, add a post-receive one
1498 2004-07-23 Martin Quinson
1499 Version 0.2 (protocol changed; ABI changed)
1500 - add some testing for cpbs in the test cases, and fix some more bugs.
1501 This invalidate again the little64 data file, since I cannot regenerate
1503 - remove an awfull optimization in the logging stuff, allowing me to:
1504 - understand it again
1505 - learn gcc how to check that the argument match the provided format
1506 - fix all errors revealed by gcc after that
1507 - internal keys of dict are not \0 terminated. Deal with it properly in
1508 loggings instead of segfaulting when the user want to see the logs :-/
1510 2004-07-22 Martin Quinson
1511 - Fix some stupid bug preventing cbps (callback postit) from working
1513 2004-07-21 Martin Quinson
1514 - Some documentation cleanups
1515 - remove the useless last argument of msgtype_declare
1516 - rename the Virtu functions to fit into the 'os' namespace
1517 - move headers src/include -> src/include/gras/ and stop fooling with
1518 gras -> . symbolic link
1519 - make distcheck is now successful
1521 2004-07-19 Martin Quinson
1523 - Build shared library also
1524 - Install html doc to the right location
1525 - stop removing maintainer files in make clean
1526 - build tests only on make check
1528 2004-07-13 Martin Quinson
1530 - No major issue in previous version => change versionning schema
1531 - Re-enable little64 convertion test now that Abdou kindly regenerated the
1532 corresponding dataset.
1534 2004-07-11 Martin Quinson
1536 - Get it working with any kind of structure (we can compute the padding
1537 bytes remotely for all the architectures I have access to)
1538 - Implement the structure parsing macro (still not quite robust/complete)
1539 - Improvement to the remote testing toysuite
1541 2004-07-10 Martin Quinson
1542 [autoconf mechanism]
1543 - get ride of a bunch of deprecated macros
1544 - actually run the test for two-compliment, not only compile it :-/
1545 - test whether the structures get packed (and bail out if yes. Damn.
1546 Alignment is a serious matter)
1547 - test whether the structures get compacted (but respecting the alignment
1548 constraints of each types)
1549 - test whether the array fields of structures can straddle alignment boundaries
1551 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
1552 (took me 2 hours to find that bug, looking at the wrong place)
1553 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
1554 before sending/receiving and are used to compute the offsets of fields
1555 - Given that padding size depend even on compiler options, keep track of
1556 alignment and aligned_size only for the current architecture. Not a big
1557 deal since we send structure fields one after the other (seems
1559 - Add the datastructure used for IEEE paper by the PBIO guys to the test
1560 program, let it work on linux/gcc/little32. portability todo.
1562 2004-07-08 Martin Quinson
1563 - import and improve remote compilation support from FAST
1564 - make sure make check works on half a dozen of machines out there
1566 2004-07-07 Martin Quinson
1567 Let's say it's version 0.0.3 ;)
1568 - Implement conversions (yuhu!)
1569 - Let it work on solaris (beside conversion, of course)
1570 - Stupid me, using rand() to generate the conversion datatests in not wise.
1572 2004-07-06 Martin Quinson
1573 - Let make dist work, since I'm gonna need it to compile on remote hosts
1574 - Let Tests/datadesc_usage write the architecture on which the file was
1575 generated as first byte.
1576 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
1577 architecture descriptions.
1578 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
1579 on those architectures.
1580 - Optimization: send/recv array of scalar in one shoot
1582 2004-07-05 Martin Quinson
1583 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
1585 - Plug a whole bunch of memleaks
1586 - each process now have to call gras_{init,exit}. One day, their log
1587 settings will be separated
1588 - Continue the code factorisation between SG, RL and common in Transport.
1590 2004-07-04 Martin Quinson
1592 - Redistribution between SG and RL.
1593 We wanna have to accept in SG, so move accepted related parts of RL in
1594 the common part. (more precisely, the dynar of all known sockets is no
1595 more a static in transport.c, but part of the process_data)
1597 [gras_stub_generator]
1598 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
1600 2004-07-03 Martin Quinson
1601 - Create a new log channel tbx containing dict, set, log, dynar (to shut
1602 them all up in one shot)
1604 - Fix the ugly case of reference to dynamic array.
1605 - New (semi-public) function gras_datadesc_size to allow the messaging
1606 layer to malloc the needed space for the buffer.
1608 - gras_socket_close now expect the socket to close (and not its address to
1609 put NULL in it after it). This is because the socket passed to handlers
1610 is one of their argument (=> not writable).
1612 - propagate the interface cleanup from last week in datadesc, ie remove a
1613 superfluous level of indirection. User pass adress of variable
1614 containing data (both when sending and receiving), and not of a variable
1615 being a pointer to the data. Let's say that I like it better ;)
1616 The price for that is constructs like "int msg=*(int*)payload" in
1617 handlers, but it's a fine price, IMHO.
1619 - Let it work in RL (yuhu)
1621 2004-06-21 Martin Quinson
1623 - porting SG plugin and SG select to new standards (works almost).
1624 - plug memleaks and fix bugs around.
1627 - cleanup the prototype of data recv and force users to specify when they
1628 want to handle references to objects. Test case working even for cycles.
1629 - plug memleaks. Valgrind is perfectly ok with this.
1631 2004-06-12 Martin Quinson
1633 - cleanup the separation between plugin and main code in plugin creation
1635 2004-06-11 Martin Quinson
1637 - Reput hook for raw sockets, needed for BW experiments
1638 - kill a few lines of dead code
1639 [Data description] Interface cleanup
1640 - gras_datadesc_by_name returns the searched type or NULL.
1641 That way, no variable is needed to use a type desc once, which makes
1643 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
1644 two parameters were strings (field name, type name), leading to
1646 [Dicos] Interface cleanup
1647 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
1648 This is consistant with the dynar API.
1650 2004-04-21 Martin Quinson
1652 - Porting to new standards.
1654 - interface cleanup.
1655 There is no bag anymore, no need to take extra provision to mask the
1656 pointers behind "ID".
1657 Better splitup of functions between files create/exchange/convert.
1658 This is still a bit artificial since convert and receive are so
1659 interleaved, but anyway.
1661 - add a queued message list to procdata (the ones not matching criteria
1663 - factorize some more code between SG and RL wrt procdata
1665 - use gras_exit in example to track memleaks
1666 - get rid of gs_example now that GS is properly integrated into gras
1667 - update run_test to integrate the lastest tests (datadesc)
1669 - rename WARNINGn macros to WARNn since it prooved error-prone
1671 2004-04-19 Martin Quinson
1673 - register init/exit functions within gras module mechanism
1674 - send/receive function.
1675 Convertion is not implemented, but short-cutted if not needed.
1676 struct/array elements are sent one by one (instead of block-wise), but
1677 nobody really cares (yet). Get a prototype before optimizing.
1678 - tests (using a file socket) for DD send/receive on:
1679 - base types: int, float
1680 - array: fixed size, string (ie ref to dynamic string)
1681 - structure: homogeneous, heterogeneous
1682 - chained list, graph with cycle
1683 Believe it or not, valgrind is not too unhappy with the results. The
1684 cycle happily segfaults, but the others are ok. And I'm sick of pointers
1688 - Bugfix when using a filename explicitely (instead of '-')
1690 2004-04-09 Martin Quinson
1692 - factorize more code between RL and SG in socket creation
1693 - Complete the implementation and tests of:
1695 o file (only in RL, and mainly for debugging)
1697 I lost 3 days to design a portable address resolver, and then decided
1698 that the prototype mainly have to run on my box.
1699 Addressing portability too early may be like optimizing too early :-/
1701 - use gras_init in the Tests instead of the crappy parse_log_opt
1702 (the latter function is removed)
1703 [Conditional execution]
1704 - New functions: gras_if_RL/gras_if_SG (basic support for this)
1705 [Code reorganisation]
1706 - Get rid of libgrasutils.a since it makes more trouble than it solves.
1707 Build examples against the RL library, since there is no way to disable
1708 its creation for now.
1710 For information, the beginning of coding on GRAS was back in june
1711 2003. I guess that every line has been rewritten at least twice since