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 Ruby and Lua Bindings: create them
17 * That's new and great, you should try them out.
18 Same functionalities than Java bindings, only even less polished
20 * Kill the useless "rate" argument of SD_task_get_execution_time()
21 Everyone used to provide -1 as a value, it was not used, and the
22 semantic of a possible use wasn't even clear.
23 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
24 either as comm costs or compute costs to mean that there is no
25 such thing for that specific task.
27 * In trace replay, allow to have one trace file per process.
28 Give the specific trace file as argument of each process,
29 and call MSG_action_trace_run(NULL)
30 You can still have one merged file for each processes.
31 * Kill the MSG_paje_output() function. It's a noop since 2 years.
32 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
34 * Add a MSG_task_set_data() function
36 * add a SIMIX_sem_get_capacity() function
38 * Rename configuration variables to start a hierarchy:
39 o cpu_model -> cpu/model
40 o network_model -> network/model
41 o workstation_model -> workstation/model
43 * Implement MPI_Get_count, MPI_MAXLOC, MPI_MINLOC
45 * config: add the ability to set a default value after registration
46 Does not override any previously set value (e.g. from cmd line)
49 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
52 SimGrid (3.3.4) stable; urgency=low
54 The "Desktop Grid needs love too" release (also called Xmas release).
57 * Major speedup in the maxmin system solving by using lazy evaluation
58 Instead of solving completely the maxmin system at each iteration,
59 only invalidate (and recompute) the modified parts.
60 This new feature is enabled in default models but you can try to
61 turn it on with "--cfg:maxmin-selective-update=1" for other models.
62 * Cas01 IMproved as default CPU model
63 This CPU model is the same Cas01 model, but it uses the
64 maxmin-selective-update flag and a heap structure to manage
65 actions on SURF kernel.
66 It reduces the complexity to find the next action to finish and,
67 consequently, it's faster than the old Cas01.
68 This is the new default CPU model (Cas01).
69 * Rename the old Cas01 model to Cas01_fullupdate
70 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
71 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
72 * CpuTI (CPU Trace Integration)
73 A new CPU model whose objective is simulate faster when using
74 availability trace files.
75 Instead of using a full featured, over engineered maxmin system for
76 CPU modeling, this model does the pre-integration of traces files
77 to calculate the amount of CPU power available, and so, executes
78 faster than the old CPU models.
79 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
80 * Use LV08 as default network model since it gives better accuracy
81 for small messages and shouldn't change things for big ones.
82 Use --cfg=network_model:CM02 to get the previous behavior.
85 ******************************************
86 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
87 ******************************************
88 * The new CPU model may changes simulations!
89 The point is that events occurring at the exact same timestamp
90 are not scheduled in the same order with the old and new
91 version. This may be enough to completely change the execution
92 of simulations in some cases.
93 * The new network model will change simulations!
94 This new model is more realistic than the previous one, so you
95 should consider redoing your old experiments with this model.
96 Sorry for the inconvenience.
99 * Introduce the supernovae compilation mode
100 When compiled that way, the whole SimGrid (or almost) is put in a
101 single compilation unit and compiled in one shoot.
102 This is to help gcc which has difficulties to inline stuff from one
104 The speedup seem to be above 15%, althrough more tests are needed on
105 amd64 to confirm that gain.
108 * Port of MSG's mailbox on top of SIMIX network
109 The put/get mechanism was greatly simplified on the way.
112 * New SIMIX network module. Provides:
113 - Mailbox: rendez-vous mecanism to find with who you want to speak
114 - Synchronous send/recv: easier and hopefully faster since the
115 logic is handled in the maestro process directly now
116 - Asynchronous send/recv: you dreamt of it? It's here now
117 Too bad that nobody cared enough to propagate the change to MSG.
118 * Add semaphores as SIMIX synchronization mechanism.
121 * new function SD_daxload(char*) to load a DAX file
122 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
123 * Introduce typed tasks. Specify its kind and cost at creation.
124 At scheduling, just give where it should be placed, and the cost
125 for each involved resource is automatically computed.
126 Existing constructors so far (more to come of course):
127 - SD_task_create_comm_e2e() for end-to-end communication
128 - SD_task_create_comp_seq() for sequential computation
129 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
130 * new function SD_task_dump() for debuging display
131 * new function SD_task_dotty(task,FILE*) writing to file the info
132 about the task in dotty format
133 * SD_task_dependency_exists() can now cope with having one of its
134 arguments NULL. If so, it tests whether the other argument has any
136 * Add getters on list of preceding/following tasks:
137 SD_task_get_parents(task) and SD_task_get_children(task)
138 * Add getters on amount of workstations and list:
139 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
140 * Add getter on task kind: SD_task_get_kind(task)
141 * Update the start_time and finish_time of tasks on completion/failure
142 * Bugfix: Remove task from state swags when destroyed
145 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
148 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
149 dynar with one separate thread per value of the dynar.
150 * Change the prototype of xbt_thread_create(), sorry.
151 Added a boolean parameter indicating whether we want to join this
152 thread (used in SG only for now)
153 * Implement xbt_thread_join and xbt_thread_yield in SG also.
156 * GTNetS wrappers should now be usable again (and betterly tested too)
157 * Fix a major regression from 3.2 where the timeout provided to
158 MSG_task_put_with_timeout() was used as absolute time before which
159 the comm should be done.
160 * Start to fix the <cluster> tag.
161 - Internal links should be good now (beside of the loopback, which
162 use the private link instead)
163 - paths to the external world is still rather broken
164 - the <route:multi> tag is just broken. Actually that's brain-dead.
165 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
166 to make it less stupid
167 ** Check your platform with teshsuite/simdag/platforms/flatifier **
168 * Fix a source-level compatibility glitch from 3.2: after defining
169 MSG_USE_DEPRECATED, you can use the old name
170 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
171 * Allow to compile from the SVN with automake 1.11
172 * Fix some problems when using the "start_time" tag in deployment XMLs.
173 * Fix #8569: XBT/synchro.h has redundant declarations
174 * Fix #8563: MSG return values and exceptions
175 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
176 * Integrate patch #8636: Obey DESTDIR when installing documentation.
177 Thanks to Robson Peixoto.
178 * Fix a vicious bug in dictionaries inducing that some elements were
179 not freed on xbt_dict_free()
181 Portability report of this version:
182 * Main portability targets:
183 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
185 - mac leopard on i386
186 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
187 but nothing critical.
188 * Other platforms: windows, AIX and others were not tested for this release
190 Timing report of this version:
191 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
192 scenario parameters). From 8h to a few seconds in desktop grid settings.
193 * Supernovae brings about 25% speedup on i386.
195 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
197 SimGrid (3.3.3) stable; urgency=low
199 The "Need for Speed" release.
201 The timings done to validate the 3.3.2 were faulty.
202 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
204 The problem was a conversion from a manually handled vector to
205 xbt_dynar_t on the critical path.
206 xbt_dynar_foreach calls functions, inducing stack management crap.
208 We inlined these functions and xbt_dynar_foreach is now breath taking.
209 We also inlined xbt_swag_belong on the way.
211 Here are some approximate speedup measurements (on master/slaves
212 simulations lasting between 10s and 20s each):
213 3.3.1 -> 3.3.2: about same performance
214 3.3.2 -> 3.3.3: 40% speedup
215 3.3.1 -> 3.3.3: 40% speedup
216 3.3.1 with inline patch -> 3.3.3: 30% speedup
218 Our reading is that the refactoring which occurred in 3.3.2 made us
219 suffer much more from the xbt_dynar_foreach low performance, but
220 once we solved this, this refactoring proved to be very performance
221 effective. From the 40% speedup, somehow, 10% are due to the
222 inlining and 30% to the refactoring.
224 That's a pitty that gcc cannot inline functions placed in other files
225 alone. We have to choose between:
226 - break the encapsulation (by putting private data structures and
227 accessors in headers files to help gcc)
228 - live with low performance
229 - switch to a decent compiler such as icc (not quite possible).
231 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
233 SimGrid (3.3.2) stable; urgency=low
235 The "Simplicity does not preceed complexity, but follows it" release.
237 The main contributors of this release were (lexical order):
238 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
241 * Extract the routing logic into its own object.
242 (was dupplicated in network.c and workstation_LV07.c;
243 Allows to implement other ways of storing that info)
244 => kill now useless network_card concept
245 - Use dynar to represent routes (instead of void** + int*)
246 - kill link_set (use surf_network_model->resource_set instead)
247 - Add a command-line option to choose the routing schema to use
248 - Add three new models:
249 * Floyd (shortest path computed at initialization)
250 * Dijikstra (shortest path recomputed all the time)
251 * Cached Dijikstra (shortest path computed on need)
252 All these models where contributed by Silas De Munck, and are
253 described in his ICCS09 paper.
255 * Simplify model declaration
256 (less redirections, less function to write when defining a model)
257 - Factorize stuff between models:
260 surf_model_resource_set(model)
261 surf_model_resource_by_name(model, name)
262 - Unify the types of models in s_surf_model_t (using an union)
263 - Embeed fields of common_public directly into s_surf_model_t
264 - Rename model methods:
265 action_free ~> action_unref
266 action_change_state ~> action_state_set
267 action_get_state ~> action_state_get
268 - Change model methods into functions :
269 (model)->common_public->action_use ~> surf_action_ref
271 * Implement a generic resource; use it as ancestor to specific ones
272 (allows to kill duplicated code in models)
273 Drawback: timer command don't need no name nor properties;
274 workstation_CLM03 don't need no properties
275 (but I guess we can live with those few bytes wasted)
277 * Improve the action object model
278 - implement a constructor avoiding dupplicated code about field
279 initialization in generic_action part.
281 * Kill the SDP model: it has an external dependency, is deprecated
282 in flavor of modern lmm models, and didn't compile since a while
285 * Relocation of the context module from XBT to SIMIX.
286 (the context were decoupled from the simix processes, duplicating a lot of code)
287 => a lot of code was factorized
288 - less overhead is introduced during scheduling
289 - simpler API for the context factory
290 - the logic for process creation,destruction and manipulation was simplified
291 * Simplification of the s_smx_process_t data structure.
292 => accesing the simix level data associated to a process is faster now,
293 and the code is a lot more readable.
296 * Implement some more MPI primitives:
297 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
298 -implementation: Bcast: flat or 2-ary tree (default),
301 Allreduce: Reduce then Bcast
302 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
303 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
304 Alltoallv: flat tree, like ompi
306 * Add support for optimized collectives (Bcast is now binomial by default)
307 * Port smpirun and smpicc to OS X
310 * Kill SD_link_get_properties: hard to maintain and makes very little sense
311 Shout out if you used it.
314 * Display the list of still queued messages in SG mode when existing
318 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
319 * Add xbt_graph_node_get_outedges() [Silas De Munck]
320 * Add xbt_str_from_file(FILE*)
321 * Add xbt_dict_get_key achieving a linear reverse search
322 * Remove the context module
324 Portability report of this version:
325 * Main portability targets:
326 - Linux(debian)/x86/context
327 - Linux(debian)/x86/pthreads
328 - Linux(debian)/amd64/context
329 - Linux(debian)/amd64/pthreads
330 On these, we still have the eratic breakages of gras/pmm and
331 amok/saturate_sg reported in previous version. We still think
332 that the tests are the cause of the fault, not the tested code.
334 - Mac OSX Leopard/x86/context
335 Still false negative in tesh autotesting.
336 Smpi still fails, but this time because readlink does not accept -f
337 Everything seems to work properly beside of that.
340 - AIX version 5.3 (only tested contexts this time)
341 Smpi still fails there because mktemp is not installed.
342 Everything seems to work properly beside of that.
344 I managed to compile it for the first time, but several breakages.
345 Won't delay the release for this exotic platform.
347 * Windows: it's still lagging behind. If you want to help, please
350 Timing report of this version:
351 This version seem to be more than 5% faster than 3.3.1 (on linux
352 64bits with contextes). The gain is less than expected, we are
353 investigating this for next release.
355 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
357 SimGrid (3.3.1) stable; urgency=low
360 * Implement a --cfg-help to show existing configuration variables
361 * Build chain do not require doxygen in maintainer mode
364 * fix a bug on struct sizeof computation, which prevented the
365 exchange of arrays of structs in some conditions
366 - added a regression test about this in datadesc_usage
367 * Allow the exchange of 0-long dynamic vectors.
368 - for that, use -1 as indicator of dynamic size instead of 0
369 - This implied to change any size from unsigned long to long,
370 reducing a bit communication abilities, but I guess that with
371 64bits being quite common, this is more than enough.
372 - This also induce a protocol change, thus bumping network protocol
373 version from 0 to 1 (if we have external users, we have to get
374 clean on that point too ;)
375 - added two regression tests about this in datadesc_usage
376 * Be more verbose when propagating local exceptions
377 This helps debugging.
378 * Display the status of simulated processes when receiving SIGINT in
382 * Allow to control the simulation from a trace file.
383 New functions MSG_action_register() and MSG_action_trace_run()
384 The first one allows to associate a function execution to each
385 kind of action while the second one parses a trace file and
386 triggers the corresponding actions within the system.
387 For now, only a toy example is provided in examples/msg/actions
388 * Add an exemple of process migration in examples/msg/migration
389 * Fix a bug in task exchange which broke MSG_task_get_sender()
390 Add a teshsuite regression test for that.
391 [Bug: if MSG_task_get_sender() is called after sender exit,
393 * Fix a bug which prevented suspend/resume to work properly
394 * Display the status of simulated processes when receiving SIGINT
395 This fixes a regression of v3.3. due to the introduction of SIMIX
396 * Bug fixing in failure management:
397 - trace could not start by a failure at time 0
398 - failure during communications were not working
401 * Add SIMIX_process_set_name() to change the name of the current
402 process in the log messages.
403 * Store smx_hosts in a dict since we only retrieve them by name
404 * Move the configuration infrastructure to surf
407 * Move the configuration infrastructure to surf
410 * Massive internal cleanups:
411 - Store internal structures on processes instead of hosts (allows
412 to have more than one process per host, in addition of being more
414 - Cleanup the initialization/finalization process
415 - Kill a whole bunch of unneeded synchronization:
416 processes run in exclusive manner within the simulator
417 - Move queues from global tables to process data fields
419 - now accept -platform and -hostfile arguments
420 - Pass the right rank value to processes according to the hostfile
421 * Compile the examples by default, and use them as regression tests
422 * Implement MPI_Wtime()
423 * Change the reference speed to a command line option
426 * TCP_gamma can now be specified as command line option using
427 --cfg=TCP_gamma:10000000.0
428 * Change the --surf-path cmd line option into --cfg=path:
431 * Also include strbuff from xbt.h public header
432 * xbt_ex_display(): do not free the exception after displaying
433 This allows to do more with the given exception afterward.
434 Users should call xbt_ex_free() themselves.
438 Portability report of this version:
439 * Main portability targets:
440 - Linux(debian)/x86/context
441 - Linux(debian)/x86/pthreads
442 - Linux(debian)/amd64/context
443 - Linux(debian)/amd64/pthreads
444 These targets fail about 1/10 of times on gras/pmm, but we believe
445 that this is because of the test, not because of simgrid.
446 amok/saturate_sg fails even more rarely, and the test may not be
449 - Mac OSX Leopard/x86/context
450 The test suite still spits tons of errors because some obscure
451 force prevents us from removing the temporary directories
452 arguing that they still contain some metadata I've never heard of.
453 Smpi fails because seq is not installed.
454 Everything seems to work properly beside of that.
457 - AIX version 5.3 (both contexts and pthread)
458 Smpi still fails there because mktemp is not installed.
459 XML inclusions seems rosty on AIX.
461 * Windows: it's still lagging behind. If you want to help, please
464 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
466 SimGrid (3.3) stable; urgency=high
470 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
473 * Introduce the SIMIX module: factorize code between MSG and GRAS.
476 Until now, GRAS were using MSG as an interface to SURF. It was
477 quite difficult because both interface have several differences
478 (MSG channels vs GRAS sockets were the most notable point).
480 This also opens the gate to SMPI (which should occur soon) and speed
481 up simulations by to 40% (even if it were not the main goal).
483 **************************************
484 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
485 **************************************
486 The point is that events occuring at the exact same timestamp are
487 not scheduled in the same order with the old and new version. This
488 may be enough to completely change the execution of simulations in
489 some cases. Sorry for the inconvenience.
491 * Cleanup and upgrade the XML format to push further scalability
492 issues (check http://hal.inria.fr/inria-00256883/ for more info)
494 * Improve the testing infrastructure with tesh. Now a very large part of
495 the code is tested not only by being run but also by checking that the
496 output match an expected output [Mt].
498 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
499 is really less memory-demanding, which should allow you to use
500 larger files in SimGrid [AL].
502 * Inform valgrind about our contextes, so that it becomes usable
503 with the default (and more effecient) version of SimGrid
504 [contributed by Sékou Diakite, many thanks]
507 * Introduce a listener thread in charge of receiving incomming
508 messages from the network. It allows to overlap communication and
509 computation but most notably, it removes some stupid deadlocks due
510 to the fact that so far, a process could not send and receive at
511 the same time. This made most non trivial communication schema
513 * Convert the PIDs from long int to int to match the MSG ones (and
515 * New function: gras_agent_spawn() to launch a new process on
516 current host. Only working in simulation for now. [Mt]
517 * New function: gras_os_hostport() returning a constant form (ie,
518 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
521 * Make the backtrace of exceptions more human readable [Mt]
522 * New module: xbt/str [Mt]
523 a ton of string utility functions (split, join, printf to a newly
524 allocated buffer, trim, etc)
525 * New module: xbt/hash [Mt]
526 SHA1 hashing algorithm (more to come if needed)
527 * New module: xbt/synchro [Mt]
528 synchronization tools (mutex and conditions) working the same way
529 in simulation and in real life (mainly useful for GRAS, but not
531 * New module: xbt/queue [Mt]
532 classical producer/consumer synchronization scheme
533 * xbt_dynar_new_sync() creates a synchronized dynar. All access
534 (using the classical functions will get serialized) [Mt]
535 * Make dictionary internal table dynamic. No need to specify its size
536 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
538 * Make sure the log channels are organized as a tree under windows
539 (because of ANSI C compatibility issue, any channel were child of
543 * Cleaned many thing in surf and fixed a few bugs [AL].
544 * Add a nice command line configuration mechanism to compose models [AL].
545 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
546 the previous one (KCCFLN05). It relies on something that looks like
547 a max-min sharing mechanism but cannot be written as such. A new solver
548 was thus designed [AL].
549 * Add a new solver to lmm. Based on Lagrange optimization and
550 gradient-based descent, it enables to efficiently maximise systems s.a
552 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
554 This solver enables to propose two new network models for TCP Reno and
555 TCP Vegas based on Low's work. These models still need to be fully
556 tested though [Pedro Velho].
559 * Bug fix in SD_simulate. Now the time bound given as argument is
561 * Use the new parallel task model (ptask_L07) as default.
562 * Use the SURF command line configuration mechanism.
563 * 0-size tasks (for synchronization) should now work.
565 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
567 SimGrid (3.2) stable; urgency=high
571 We still experience issues on this platform, but we believe that at
574 GRAS API BREAKAGE (for simplification purpose, sorry):
575 * the gras_msgtype_by_name is not used anymore. Instead of
576 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
577 you can write (and must)
578 gras_msg_send(toserver, "request", &request);
579 - If you still want to pass a gras_msgtype_t to the function (to cache
580 the type and avoid the lookup time), use the gras_msg_send_() variant.
581 - Impacted functions:
582 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
583 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
584 * The callbacks are now expected to return 0 when everything went well
585 (just like the main() function)
587 GRAS new features and improvements:
588 * New module mecanism where user code can use per process globals [Mt]
589 This is similar to gras_userdata_*() functions, but for libraries. It
590 factorize some code developped over and over in the examples and AMOK.
591 It has still to be documented and used (only amok/peermanagement is
593 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
594 loss when they were small enough to fit into the buffer and sent quickly
595 enough so that they can all get received in one shoot.
596 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
597 if not found. Use the *_or_null() variant for the old semantic.
598 * In gras_msg_handle, do not discard messages without callback.
599 They are probably messages to be explicitly awaited later (ie, proofs of
600 mis-synchronization in userland since they are sent before being awaited)
602 * gras_socket_meas_send/recv: semantic changed!
603 The numerical arguments used to be (1) the total amount of data to send
604 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
605 messages. This was need for the fool willing to send more than MAXINT
606 bytes on quite fat pipes.
609 * Do really rename the hostmanagement module to peermanagement. [Mt]
610 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
611 but this is rather new and this was documented in the module
612 documentation (poor excuses, I admit)
613 * Bandwidth measurement semantic changed! This follows the changes to
614 gras_socket_meas_send/recv explained above.
617 * A sequential mode has been added to the workstations. When a workstation
618 is in sequential mode, it can execute only one task, and the other tasks
619 are waiting in a FIFO. [Christophe Thiery]
622 * The KCCFLN05 workstation model now handles parallel tasks. It is the
623 model for SIMDAG. [Christophe Thiery]
624 * Bug fix in the maxmin solver: Some values were close to 0 instead of
625 equal to 0, which caused some bad behaviors in
626 saturated_constraint_set_update. I now use a threshold mechanism like in
630 * When running manually src/testall, you select specific units [Mt]
631 testall is the result of our cunit mecanism, and should replace all
632 the scripty thingy around since bash don't run easily on billware.
634 * A mallocator system has been added. [Christophe Thiery]
635 Mallocators allow you to recycle your unused objects instead of freeing them
636 and allocating new ones.
638 Documentation update:
639 * FAQ reworking + New FAQs:
640 - "Valgrind spits tons of errors!" [Mt]
641 - "How to repport bugs" [Mt]
642 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
643 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
644 - Communication time measurement within MSG [AL]
645 - I experience weird communication times when I change the latency [AL]
648 - an introduction to the framework and to the used communication model
649 - an initiatic tour introducing the most proheminent features:
651 . Lesson 0: Installing GRAS
652 . Lesson 1: Setting up your own project
653 o Part 2: Message passing
654 . Lesson 2: Exchanging simple messages
655 . Lesson 3: Passing arguments to the processes (in SG)
656 . Lesson 4: Attaching callbacks to messages
657 . Lesson 5: Using globals in processes
658 . Lesson 6: Logging informations properly
659 . Lesson 7: Using internal timers
660 . Lesson 8: Handling errors through exceptions
661 . Lesson 9: Exchanging simple data
662 . Lesson 10: Remote Procedure Calling (RPC)
663 . Lesson 11: Explicitely waiting for messages
664 . Recapping of message passing features in GRAS
665 - A HOWTO section containing:
666 o HOWTO design a GRAS application
667 More are due, of course. They will come latter. In the meanwhile, you can
668 check the examples which are still here.
670 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
672 SimGrid (3.1) stable; urgency=high
676 There was a stack corruption somewhere, visible only when optimizing
677 with these versions. [Vince]
680 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
681 module that enabled to play with Directed Acyclic Graphs. It is built
682 directly on top of SURF and provides an API rather close to the old
683 SG. Some old codes using SG are currently under rewrite to check that
684 all needful functions are provided. [Christophe Thiery]
687 * Complete rewrite of the KCCFLN05 workstation model. It is now an
688 extension of the classical CLM03 model that gracefully handles
689 failures. This is now the default model for MSG and GRAS. It doesn't
690 handle parallel tasks yet though. [AL]
691 * Bug fix: Weights were not correctly set in the network part.
692 WARNING: This may have resulted in incorrect results with simulations
693 where there are more than one flow on a given link. [AL]
696 * After a (long ?) discussion on simgrid-devel, we have decided that the
697 convention we had on units was stupid. That is why it has been decided
698 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
699 WARNING : This means that all previous platform files will not work as
700 such with this version! A warning is issued to ask users to update
702 A conversion script can be found in the contrib module of the CVS, under
703 the name contrib/platform_generation/surfxml_update.pl [MQ]
706 * Bug fix: Processes were started in reverse order, wrt deployment file.
707 WARNING: if your code relies on this bug, please fix it. [AL]
708 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
709 being executed on two different locations. [AL]
710 * Bug fix: Failures are now better supported thanks to Derrick's tests
711 (there was many failure situations I hadn't thought of and that weren't
712 correctly handled). [AL]
713 * New function: MSG_host_is_avail indicates you whether a given m_host_t
717 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
718 Exception occurring on server-side are propagated back to client (!).
720 API CHANGE: the callback changed their prototype. Change:
721 int my_handler(gras_socket_t expeditor, void *payload_data) {
723 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
724 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
726 * New! function: gras_msg_handleall to deal with all messages arriving
727 within a given period.
728 * New! function: gras_socket_server_range to get a server socket in a
729 range of port numbers (ease to avoid port number conflicts) [MQ]
730 * New! gras processes display their backtrace when they get a SIGUSR1
731 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
732 Sweet to debug RL processes [MQ]
736 - Do not force experiment sizes to be expressed in kb, or it becomes
737 impossible to measure the latency this way (needs one byte-long tests)
738 WARNING: this changes the amok_bw_* function semantic. [MQ]
739 - Implements the link saturation stuff. [MQ]
740 * Peer management module:
741 New! module factorizing code that we wrote over and over [MQ].
744 * New module: cunit (my jUnit implementation in ansi C) [MQ]
745 - Test units are placed directly into the library code, they get extracted
746 automatically and placed into the src/testall binary.
747 - Convert most of the XBT tests to this system.
748 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
749 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
750 live in the same C code. This required to change a little bit the API
751 of surfxml parsing but shouldn't be an issue for end-users. [AL]
752 * New module: sparse graph structure with basic algorithms (this is work
753 in progress and the API is not considered to be frozen yet). [AL]
754 * Display more information on backtraces: source line & function names are
755 now displayed just like valgrind does (rely on addr2line tool) [MQ]
756 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
757 * Reworked a little bit some #include statements to load only required
758 headers. Some user code that relied on SimGrid to include stdlib or
759 stdio may need to include it by themselves. [AL]
760 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
762 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
763 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
764 but I guess that almost nobody used those parts. [MQ]
766 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
768 SimGrid (3.0.1) stable; urgency=low
771 * Unfortunately, I had missed 5 misnamed functions:
772 xbt_fifo_item_t xbt_fifo_newitem(void);
773 void xbt_fifo_freeitem(xbt_fifo_item_t);
774 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
775 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
776 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
777 They're now deprecated. Please use their new versions:
778 xbt_fifo_item_t xbt_fifo_new_item(void);
779 void xbt_fifo_free_item(xbt_fifo_item_t);
780 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
781 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
782 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
784 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
785 * Documentation: xbt_log module unmercifully reworked [MQ]
786 * Bugfix: there was a problem with the ending of contexts with
787 the pthread backend. It caused some weird deadlock or behavior
788 depending on the pthread implementation. [AL]
789 * Bugfix: get the exceptions raised in the simulator repport where
790 and why they come from when they are not catched in time [AL, MQ]
793 * Bugfix: Do repport the error when two non-connected hosts try to
794 exchange data (Thanks to Flavien for stumbling into this one) [AL]
797 * Add additionnal checkings on communications. Assert that two
798 communicating hosts are connected by a set of links... [AL]
801 * Add additionnal checkings on channel values in communication [AL]
802 * New: MSG_task_get_source to see on which host a task was generated [HC]
803 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
804 the number of tasks waiting to be received on channel and sent
806 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
807 waits for the first task coming from a given host.. [AL]
809 GRAS new functionnalities: [MQ]
810 * Enhance the parsing macro to allow the size of multidimentional objects
811 to be given thru annotations.
812 * New example (and documentation): Matrix Multiplication a la RPC
813 (as when I was young!) and fix a bunch of bugs found on the way.
815 GRAS performance improvements: [MQ]
817 * Reduce the amount of cbps creation/destruction by making it static to
818 datadesc_send/recv() and using a (newly created) cbps_reset (based on
821 * Change libdata to a set so that we can search for stuff by ID (and thus
822 reduce the insane amount of dict lookups)
825 * Actually implement gras_datadesc_copy() so that we don't have to mimick
826 RL communication on top of SG since it's so uneffective.
827 It may also be used for inter-thread communication in RL, one day.
828 * Use gras_datadesc_copy() to exchange messages on top of SG
830 - improve message exchange performance on top of SG
831 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
832 * Don't exchange on the network the size of the used part of buffer,
833 instead, specify the possible buffer size to read().
835 - reduces the amount of read/write calls (one pair per exchange)
836 - reduces the amount of exchanged data (the size)
837 - allows to retrieve all arrived data on receiver side, if we don't need
838 it right now (subsequent read will peek the buffer)
839 - allows the receiver to proceed with the begining of the stream before
840 everything is arrived
841 - make it possible to build an iov transport (using readv/writev)
843 - take care of the data with non-stable storage (like stacked data),
845 * If possible, TCP send uses vector I/O (when writev() is here)
846 - Don't use it for receive since we send data sizes and data on the
847 same stream, so we wouldn't be able to chain large amount of chunks
848 before having to flush the stuff to read the size.
849 * Rework the transport plugin mecanism to simplify it and reduce the
850 amount of pointer dereferencement when searching for the right function
853 * I guess that now, we do almost as few system calls as possible while
854 doing as few data copy as possible.
856 To improve it further, we could try to send all the sizes first and then
857 all the data (to use iov on receiving size), but it's only a partial
858 solution: when you have 2 dimensional data, the sizes of the second
859 dimension is data of the first dimension, so you need 3 streams.
861 I'm not sure the potential performance gains justify the coding burden.
863 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
865 SimGrid (3.00) stable; urgency=high
868 * New! Give the possibility to hijack the surf parser and thus bypass
869 MSG_create_environment and MSG_launch_application. Have a look at
870 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
872 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
874 SimGrid (2.96) unstable; urgency=low
879 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
880 This deprecates the xbt_error_t mecanisms.
881 It modifies (simplifies) all XBT and GRAS API.
882 MSG API keeps unchanged (exceptions raised by XBT are catched from
883 within MSG and masked with existing error handling facilities)
886 * New! Add a FATPIPE model. [AL]
887 * New! Add a parallel task model. [AL]
888 * New! Add automatically a loopback interface (in the default
889 network model) if none was precised.
892 * Bugfix: MSG_process_resume now works with the current running process.
894 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
895 * Modification of MSG_task_get_compute_duration. Once a task has been
896 processed, the value returned by this function is now equal to 0. [AL]
897 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
898 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
899 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
900 of a m_task. For now, MSG_task_cancel only works with computation
902 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
903 of the processor (in Mflop/s) regardless of the current load on the
905 * API Change: use proper naming convention for MSG_getClock and
906 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
908 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
909 This function changes the priority of a computation task. This priority
910 doesn't affect the transfer rate. A priority of 2 will make a task
911 receive two times more cpu power than the other ones. This function
912 has been added to suit the needs of Nguyen The Loc and hasn't been that
913 much tested yet. So if it fails, please report it and send me your code.
915 * API Change: removed all functions and types that were marked "deprecated"
916 since many months. Renamed MSG_global_init_args to MSG_global_init.
918 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
920 SimGrid (2.95) unstable; urgency=low
923 * Steal some nice code to GNU pth to fix context detection and usage [AL]
924 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
925 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
928 * Bugfix: Allow absolute paths for platform description files [MQ]
929 * Bugfix: do free the variables after use. Leads to drastic performance
931 * Implement max_duration (ie, timeouts) on resources [AL]
934 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
936 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
937 the needed support (timeouts) [AL]
940 * Implement measurement sockets. You can now get the bandwidth between two
941 hosts thanks to AMOK (see below). [MQ]
942 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
943 dynar over the network (yeah) [MQ]
944 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
945 * simple/static token-ring example. [Alexandre Colucci and MQ]
946 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
950 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
951 type parsing. "short" and "long" modifiers were also ignored; other
952 modifier (such as reference level) are still ignored. [MQ]
953 * Embeed the buffer size within the buffer itself on SG. [MQ]
954 That way, send() are atomic and cannot get intermixed anymore (at least
955 the ones which are less than 100k; bigger messages still have the issue)
956 * Array size pushed by the field, not by the field type (or each
957 and every long int will push stuff to the cbps) [MQ]
958 * use select() to sleep since it allows to portably sleep less than one
961 GRAS (minor cleanups)
962 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
965 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
966 * type category 'ignored' killed as it was never used and were difficult
968 * whether a type can cycle or not is now a flag, leaving room for more
969 flags (as "ignored", if we feel the need one day ;)
970 * Rename raw sockets to measurement sockets since "raw" has another
971 meaning in networking community.
974 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
975 and offers features not belonging to GRAS but that most applications
976 need. One day, it may be a set of plugins loadable at runtime.
977 * New module: bandwidth
978 bandwidth measurement between arbitrary nodes running this module. [MQ]
980 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
982 SimGrid (2.94) unstable; urgency=low
984 The first beta release of SimGrid 3 !
988 * Update the main page and the FAQ. Adding references to gforge.
991 * Add a gras_os_getpid function.
994 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
995 * Extend the logs so that they also print PID, hostname, date, ... if
997 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
998 and kill the old version which were in testsuite/
999 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
1003 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
1004 for users. Instead, each programming environment (GRAS, MSG,...) use it
1005 when needed to provide such a feature to users.
1006 Don't shortcut the mecanism or you will also shortcut the virtualization
1007 you need on the simulator.
1011 * Cleanups in configury with regard to compile optimization/warning flags.
1012 Also add -fno-loop-optimize to any powerpc since it's the optimization
1013 killing gcc (< 3.4.0).
1014 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
1015 needed by MSG examples complications
1016 * Borrow configury beautifications from PHP
1019 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
1020 warning (thanks loris for stumbling into this one).
1021 * Bugfix: stop loading private headers (gras_config.h) from the public
1025 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
1026 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
1027 RL would imply a DNS resolver, which is *hard* to do in a portable way
1028 (and therefore delayed).
1029 * Implement a real timer mecanism and use it in timing macros. This allows
1030 to avoid rounding errors and get a 0.000005 sec precision in timing
1031 macros. While I was at it, various cleanups:
1032 - allow to declare more than one timed section per file (fix a stupid bug)
1033 - move some private declaration to the right place
1034 - merge conditional execution and timing macros into emulation module
1035 - document the module
1036 - make sure the module cleanups its mess on gras_exit
1037 * Documentation improvements:
1038 - (new) how to compile applications using GRAS
1039 - (new) emulation support (timing macros)
1041 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
1043 SimGrid (2.93) unstable; urgency=low
1045 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
1048 - Use Paje properly where used. Still to be sanitized properly.
1049 - Portability fix: Add an implementation of the contexts using pthread
1053 - Add xbt_procname(): returns the name of the current process.
1054 Use it to show the current process's name in all logging.
1056 - fix detection of older flex version and the reaction, since we do
1057 depend on modern ones (we use lex_destroy)
1058 - Better separation of SG and RL in the libs: remove all simulation code
1059 from libgras. As a result, this lib is now only 200k when stripped.
1060 Some of the xbt modules may also be duplicated (two sets and such) and
1061 should be cleaned/killed before SG3.
1062 - Insist on using xlC on AIX because of weird problems involving gcc there.
1063 - Cleanup the make remote stuff. This is now done by scripts
1064 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
1065 mainly for our private use, but we're working on changing them to user
1068 - Bugfix: flush the socket on close only if there is some *output*.
1069 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
1071 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
1074 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
1076 SimGrid (2.92) unstable; urgency=low
1078 Alpha 3 on the path to SimGrid 3
1082 - New! First try of benchmarking macros.
1083 - New! First try so that gras_stub_generator generate deployment and
1084 remote compilation helpers.
1086 - Bugfix: Initialization fix in msg_test.
1090 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
1092 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
1094 - API Change: gras_os_sleep to take the amount of seconds as a double.
1095 Accepting an int was error prone since it was the only location where
1096 seconds were coded as such. It leaded to damn rounding errors.
1097 - Bugfix: Hard to belive that timers ever worked before this.
1099 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
1101 SimGrid (2.91) unstable; urgency=low
1103 Alpha 2 on the path to SimGrid 3
1107 - Bug fix in the lmm_solver.
1109 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
1110 through the function MSG_paje_output.
1111 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
1112 - It is possible to bound the rate of a communication in MSG with
1113 MSG_task_put_bounded() (was already in the previous version but I had forgotten
1114 to write it in the changelog).
1115 - Bug fix to let GRAS run on top of MSG until we move it directly on top
1120 - Various cleanups to the autotools stuff
1121 - Begin to move Gras examples to examples/gras/
1122 - Let make distcheck work again (yeah!)
1124 - documentation overhauled using doxygen.
1125 gtk-doc-tools is dead in SimGrid now.
1126 - Automatically extract all existing logging categories, and add the list
1127 to the documentation (long standing one, to say the less)
1129 - Cleanup the known architecture table. Reorder the entries to group what
1130 should be, and use a more consistent naming scheme.
1131 (some of the test dataset are still to be regenerated)
1132 - New! Allow library to register globals on each process just as userdata
1134 This is implemented using a xbt_dict and not a xbt_set, so we loose the
1135 lookup time (for now).
1136 Use it in msg and trp.
1137 This cleans a lot the internals and helps enforcing privacy of the
1138 headers between the gras components.
1139 - New! Add a timer mechanism, not unlike cron(8) and at(1).
1140 - Bugfix: gras_os_time was delirious in RL.
1141 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
1143 - Reenable GRAS now that it works.
1145 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
1147 SimGrid (2.90) unstable; urgency=low
1149 Alpha 1 on the path to SimGrid 3
1151 * It is a long time since the last release of SimGrid. I'm sorry about
1152 that but as I had told you, I was rewriting a lot of things. I apologize
1153 to those who had been reporting bugs to me and that I had not answered.
1154 If your bug is still in the new version, please tell me. Here is a
1155 summary of the main changes.
1157 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
1158 lead by Martin Quinson. As a consequence SimGrid gains a lot in
1159 portability, speed, and a lot more but you'll figure it out later.
1160 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
1161 I wanted to release the new MSG as soon as possible and I have
1162 broken GRAS, which is the reason why, for now, only MSG is fully
1163 functional. A laconic description of these projects is available
1164 in the documentation.
1166 * REVOLUTION 2: I have removed SG and I am now using a new simulation
1167 kernel optimized for our needs (called SURF but only the developers
1168 should use it). Hence, MSG is now roughly 30 times faster and I think
1169 that by rewriting a little bit MSG, I could event speed it up a little
1170 bit more. Beside the gain in speed, it is also much easier to encode a
1171 new platform model with SURF than it was with SG. More to come...
1173 * REVOLUTION 3: I have tried to change a little as possible the API of
1174 MSG but a few things really had to disappear. The main differences
1175 with the previous version are :
1176 1) no more m_links_t and the corresponding functions. Platforms are
1177 directly read from a XML description and cannot be hard-coded
1178 anymore. The same format is used for application deployment
1179 description. The new format is described in the documentation.
1180 Have a look in tools/platform_generation. There is a tiny script
1181 that converts from the old platform format to the new one. Concerning
1182 the application deployment format, parsing the old one is tricky.
1183 I think most of you should however be able to convert your files. If
1184 it is really an issue, I can write a C code that does the conversion.
1186 2) the toolbox tbx does not exist anymore. We now have a library
1187 with much more data-structures but without the hash-tables (we have
1188 dictionaries that are much faster).
1190 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
1192 *****************************************************************************
1193 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
1194 * don't feel like converting the oldies. (Mt) *
1195 *****************************************************************************
1198 Version 2.90: "the long awaited one"
1199 - Finished rewriting and debugging MSG. Rewrote the documentation.
1200 - disable GRAS for now since it needs to be ported to the newest SG
1203 - Finish the port to windows (using mingw32 for cross-compile)
1206 - Main loop and datastructures of SURF. A cpu resource object is
1207 functional. Surf can thus be used to create cpu's with variable
1208 performance on which you can execute some actions.
1210 2004-11-15 Martin Quinson
1211 - Port to ARM. Simply added the alignment and size descriptions. Should
1212 work, but the ARM machines are so slow that I didn't had the opportunity
1213 to 'make check' over there yet.
1215 2004-11-15 Arnaud Legrand
1216 - Trace manager now written. It uses a heap structure and is therefore
1217 expected to be efficient. It may however be speeded up (particularly
1218 when many events occur at the same date) by using red and black
1219 trees. One day maybe...
1220 - Max-min linear system solver written. It uses a sparse matrix
1221 structure taking advantage of its expected use. Most operations are
1222 O(1) and free/calloc are called as few as possible. The computation of
1223 the minimum could however be improved by using a red and black tree
1226 2004-11-03 Arnaud Legrand
1227 - Rename every gras_* function that was in xbt/ to its xbt_
1229 - Add a heap and a doubly-linked list to xbt
1230 - Added a dichotomy to the dictionaries. make check works as well before
1231 so I assume that the patch is correct. I do not know however if things
1232 run effectively faster than before now. :)
1234 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
1235 SimGrid, and the version number is bumped to 2.x
1237 2004-10-29 Martin Quinson
1238 - Introduction of the remote errors.
1239 They are the result of a RMI/RPC on the remote machine.
1240 ErrCodes being scalar values, you can't get the host on which those
1241 errors did happen. Extending the error mechanism as in Gnome is possible.
1242 No idea yet whether it is a good idea.
1244 2004-10-28 Martin Quinson
1245 - Interface revolution: the Starred Structure Eradication.
1246 I used to do typedef struct {} toto_t; and then handle *toto_t.
1247 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
1248 - ???_t is a valid type (builded with typedef)
1249 - s_toto_t is a structure (access to fields with .)
1250 - s_toto is a structure needing 'struct' keyword to be used
1251 - e_toto_t is an enum
1252 - toto_t is an 'object' (struct*)
1254 typedef struct s_toto {} s_toto_t, *toto_t;
1255 typedef enum {} e_toto_t;
1256 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
1257 s_toto_t) is private.
1259 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
1260 so that it can set the variable to NULL. It was so for dicts and sets,
1261 it changed for dynars.
1263 - Fix a bunch of memleaks in dict_remove
1264 - Fix a bug in sg/server_socket opening: it failed all the time.
1266 2004-10-07 Martin Quinson
1267 - Speed up dynar lookup operation a bit.
1269 gras_dynar_get is dead.
1271 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
1272 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
1273 (which gives you the address of the stored data).
1275 gras_dynar_get_as is an helpful macro which allows you to retrieve a
1276 copy of the data using an affectation to do the job and not a memcpy.
1278 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
1279 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
1281 It does not really speedup the dynar test because they are
1282 setting elements all the time (and look them seldom). But the dict does
1283 far more lookup than setting.
1285 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
1287 2004-10-05 Martin Quinson
1288 - Allow to (en/dis)able the cycle detection at run time.
1290 Whether we should check for cycle or not is now a property of each
1291 datatype. When you think there may be some cycle, use datadesc_cycle_set.
1292 datadesc_cycle_unset allow to remove this property when previously set.
1294 Note that the cycle detection is off by default since it impacts the
1295 performance. Watch the data you feed GRAS with ;)
1297 This property is hereditary. Any element embedded in a structure having it
1298 set have it set for the time of this data exchange.
1300 You should set it both on sender and receiver side. If you don't set it on
1301 sender side, it will enter an endless loop. If you forget on receiver
1302 side, the cycles won't be recreated after communication.
1304 - Header reorganization.
1305 Kill gras_private.h, each submodule must load the headers it needs.
1307 2004-10-04 Martin Quinson
1308 - Interface revolution: do not try to survive to malloc failure.
1310 Now, gras_malloc and friends call gras_abort() on failure.
1311 As a conclusion, malloc_error is not a valid error anymore, and all
1312 functions for which it was the only gras_error_t return value are
1313 changed. They now return void, or there result directly.
1314 This simplify the API a lot.
1316 2004-09-29 Martin Quinson
1317 - Re-enable raw sockets.
1318 Created by gras_socket_{client,server}_ext;
1319 Used with gras_raw_{send,recv}
1322 It should allow to kill the last bits of gras first version soon.
1324 This is not completely satisfactory yet (duplicate code with
1325 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
1328 - Simplify transport plugin (internal) interface by not passing any
1329 argument to _server and _client, but embedding them in the socket
1332 2004-09-28 Martin Quinson
1333 - Finish the port to AIX.
1334 autoconf was my problem (segfault within the malloc replacement
1335 function. No idea why)
1337 2004-09-16 Martin Quinson
1338 - Fix some size_t madness on 64bit architectures.
1340 2004-09-08 Martin Quinson
1341 - Reduce the number of system headers loaded, overload some more system
1342 calls (such as malloc to cast the result of the system one, and work
1344 - Fix and reintroduce the config support
1346 2004-09-07 Martin Quinson
1347 - Source code reorganization to allow Arnaud to surf all over there.
1348 - Allow to document the logging categories.
1349 - Remove all uppercase from logging categories and useless cleanup in names.
1351 2004-08-18 Martin Quinson
1352 Version 0.6.2 (protocol not changed; API changed)
1353 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
1354 gras_error_t), and NULL when not found. Functions expecting a msgtype
1355 as argument (msg_wait; msg_send) deal with NULL argument by providing a
1356 hopefully usefull message.
1357 - Portability to prehistoric sparcs again
1359 2004-08-17 Martin Quinson
1360 Version 0.6.1 (protocol not changed; ABI not changed)
1361 - prealloc some buffers to speed things up
1363 2004-08-11 Martin Quinson
1364 Version 0.6 (protocol not changed; ABI expended)
1365 - The parsing macro can deal with the references, provided that you add
1366 the relevant annotations (using GRAS_ANNOTE(size,field_name))
1368 2004-08-09 Martin Quinson
1369 Version 0.5 (protocol not changed; ABI changed)
1370 - Allow to off turn the cycle detection code in data exchange at
1371 compilation time. It should be at run time, but I'm short of time (and
1372 the config stuff is still broken). That way, we keep dict out of the
1373 critical path, which is good because the performance is poor:
1374 - search not dichotomial yet
1375 - dynar give no way to access their content and memcpy everytime
1376 - In composed data description (struct, ref and so on), stop foolness of
1377 keeping the subtype's ID, but store the type itself. This keeps sets out
1378 of the critical path, which is good since they rely on dynar and
1379 dictionnaries. The only loose of that is that we cannot detect the
1380 redeclaration of a structure/union with another content (but I'm not sure
1381 the code detected well this error before anyway). We still can detect
1382 the redefinition discrepancy for the other types.
1383 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
1384 it breaks the code because of type-punning used all over the place).
1385 This breaks on all non-gcc architectures (for now).
1387 All those changes (plus the buffer of last time) allow me to gain 2 order
1388 of magnitude on cruel tests consisting of 800000 array of integers on two
1389 level of a hierarchical structure (200 secondes -> 4 secondes)
1392 - the selector of reference must now return the type it points to, not
1393 the ID of this type.
1395 2004-08-06 Martin Quinson
1396 Version 0.4 (protocol changed; ABI not changed)
1397 - Allow to pass --gras-log argument to processes in simulation mode. Really.
1398 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
1399 - Implement a buffer transport, and use it by default (it relies on tcp in
1400 real life and on sg in simulation).
1401 That's a bit hackish since I had a new field to the structure to store
1402 its data without interfering with the subtype ones. Inheritance
1403 is tricky in C. And that's a kind of reverse inheritance with one class
1404 derivating two classes. Or maybe a game with java interfaces. Anyway,
1405 that's damn hard in C (at least).
1406 Moreover, I got tired while trying to ensure plugin separation and
1407 genericity in SG mode. MSG wants me to do weird things, so let's go for
1408 cruel hacks (temporarily of course ;).
1409 See comment in transport_private.h:71
1410 - do not include all the _interface headers in private but in the files
1411 which really need them (to cut the compilation time when they are
1414 2004-07-26 Martin Quinson
1415 Version 0.3 (protocol not changed; ABI changed)
1416 - Major overhault of the datadesc interface to simplify it:
1417 - shorted the function names:
1418 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
1419 - add a trivial way to push/pop integers into the cbps without malloc.
1420 This allows to make really generic sub_type description, which simply
1421 pop their size of the stack.
1422 - add a function gras_datadesc_ref_pop_arr() which does what users want
1423 most of the time: Declare a dynamic array (which pops its size of the
1424 stack) and declare a reference to it. Poor name, but anyway.
1425 - kill the post-send callback, add a post-receive one
1427 2004-07-23 Martin Quinson
1428 Version 0.2 (protocol changed; ABI changed)
1429 - add some testing for cpbs in the test cases, and fix some more bugs.
1430 This invalidate again the little64 data file, since I cannot regenerate
1432 - remove an awfull optimization in the logging stuff, allowing me to:
1433 - understand it again
1434 - learn gcc how to check that the argument match the provided format
1435 - fix all errors revealed by gcc after that
1436 - internal keys of dict are not \0 terminated. Deal with it properly in
1437 loggings instead of segfaulting when the user want to see the logs :-/
1439 2004-07-22 Martin Quinson
1440 - Fix some stupid bug preventing cbps (callback postit) from working
1442 2004-07-21 Martin Quinson
1443 - Some documentation cleanups
1444 - remove the useless last argument of msgtype_declare
1445 - rename the Virtu functions to fit into the 'os' namespace
1446 - move headers src/include -> src/include/gras/ and stop fooling with
1447 gras -> . symbolic link
1448 - make distcheck is now successful
1450 2004-07-19 Martin Quinson
1452 - Build shared library also
1453 - Install html doc to the right location
1454 - stop removing maintainer files in make clean
1455 - build tests only on make check
1457 2004-07-13 Martin Quinson
1459 - No major issue in previous version => change versionning schema
1460 - Re-enable little64 convertion test now that Abdou kindly regenerated the
1461 corresponding dataset.
1463 2004-07-11 Martin Quinson
1465 - Get it working with any kind of structure (we can compute the padding
1466 bytes remotely for all the architectures I have access to)
1467 - Implement the structure parsing macro (still not quite robust/complete)
1468 - Improvement to the remote testing toysuite
1470 2004-07-10 Martin Quinson
1471 [autoconf mechanism]
1472 - get ride of a bunch of deprecated macros
1473 - actually run the test for two-compliment, not only compile it :-/
1474 - test whether the structures get packed (and bail out if yes. Damn.
1475 Alignment is a serious matter)
1476 - test whether the structures get compacted (but respecting the alignment
1477 constraints of each types)
1478 - test whether the array fields of structures can straddle alignment boundaries
1480 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
1481 (took me 2 hours to find that bug, looking at the wrong place)
1482 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
1483 before sending/receiving and are used to compute the offsets of fields
1484 - Given that padding size depend even on compiler options, keep track of
1485 alignment and aligned_size only for the current architecture. Not a big
1486 deal since we send structure fields one after the other (seems
1488 - Add the datastructure used for IEEE paper by the PBIO guys to the test
1489 program, let it work on linux/gcc/little32. portability todo.
1491 2004-07-08 Martin Quinson
1492 - import and improve remote compilation support from FAST
1493 - make sure make check works on half a dozen of machines out there
1495 2004-07-07 Martin Quinson
1496 Let's say it's version 0.0.3 ;)
1497 - Implement conversions (yuhu!)
1498 - Let it work on solaris (beside conversion, of course)
1499 - Stupid me, using rand() to generate the conversion datatests in not wise.
1501 2004-07-06 Martin Quinson
1502 - Let make dist work, since I'm gonna need it to compile on remote hosts
1503 - Let Tests/datadesc_usage write the architecture on which the file was
1504 generated as first byte.
1505 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
1506 architecture descriptions.
1507 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
1508 on those architectures.
1509 - Optimization: send/recv array of scalar in one shoot
1511 2004-07-05 Martin Quinson
1512 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
1514 - Plug a whole bunch of memleaks
1515 - each process now have to call gras_{init,exit}. One day, their log
1516 settings will be separated
1517 - Continue the code factorisation between SG, RL and common in Transport.
1519 2004-07-04 Martin Quinson
1521 - Redistribution between SG and RL.
1522 We wanna have to accept in SG, so move accepted related parts of RL in
1523 the common part. (more precisely, the dynar of all known sockets is no
1524 more a static in transport.c, but part of the process_data)
1526 [gras_stub_generator]
1527 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
1529 2004-07-03 Martin Quinson
1530 - Create a new log channel tbx containing dict, set, log, dynar (to shut
1531 them all up in one shot)
1533 - Fix the ugly case of reference to dynamic array.
1534 - New (semi-public) function gras_datadesc_size to allow the messaging
1535 layer to malloc the needed space for the buffer.
1537 - gras_socket_close now expect the socket to close (and not its address to
1538 put NULL in it after it). This is because the socket passed to handlers
1539 is one of their argument (=> not writable).
1541 - propagate the interface cleanup from last week in datadesc, ie remove a
1542 superfluous level of indirection. User pass adress of variable
1543 containing data (both when sending and receiving), and not of a variable
1544 being a pointer to the data. Let's say that I like it better ;)
1545 The price for that is constructs like "int msg=*(int*)payload" in
1546 handlers, but it's a fine price, IMHO.
1548 - Let it work in RL (yuhu)
1550 2004-06-21 Martin Quinson
1552 - porting SG plugin and SG select to new standards (works almost).
1553 - plug memleaks and fix bugs around.
1556 - cleanup the prototype of data recv and force users to specify when they
1557 want to handle references to objects. Test case working even for cycles.
1558 - plug memleaks. Valgrind is perfectly ok with this.
1560 2004-06-12 Martin Quinson
1562 - cleanup the separation between plugin and main code in plugin creation
1564 2004-06-11 Martin Quinson
1566 - Reput hook for raw sockets, needed for BW experiments
1567 - kill a few lines of dead code
1568 [Data description] Interface cleanup
1569 - gras_datadesc_by_name returns the searched type or NULL.
1570 That way, no variable is needed to use a type desc once, which makes
1572 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
1573 two parameters were strings (field name, type name), leading to
1575 [Dicos] Interface cleanup
1576 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
1577 This is consistant with the dynar API.
1579 2004-04-21 Martin Quinson
1581 - Porting to new standards.
1583 - interface cleanup.
1584 There is no bag anymore, no need to take extra provision to mask the
1585 pointers behind "ID".
1586 Better splitup of functions between files create/exchange/convert.
1587 This is still a bit artificial since convert and receive are so
1588 interleaved, but anyway.
1590 - add a queued message list to procdata (the ones not matching criteria
1592 - factorize some more code between SG and RL wrt procdata
1594 - use gras_exit in example to track memleaks
1595 - get rid of gs_example now that GS is properly integrated into gras
1596 - update run_test to integrate the lastest tests (datadesc)
1598 - rename WARNINGn macros to WARNn since it prooved error-prone
1600 2004-04-19 Martin Quinson
1602 - register init/exit functions within gras module mechanism
1603 - send/receive function.
1604 Convertion is not implemented, but short-cutted if not needed.
1605 struct/array elements are sent one by one (instead of block-wise), but
1606 nobody really cares (yet). Get a prototype before optimizing.
1607 - tests (using a file socket) for DD send/receive on:
1608 - base types: int, float
1609 - array: fixed size, string (ie ref to dynamic string)
1610 - structure: homogeneous, heterogeneous
1611 - chained list, graph with cycle
1612 Believe it or not, valgrind is not too unhappy with the results. The
1613 cycle happily segfaults, but the others are ok. And I'm sick of pointers
1617 - Bugfix when using a filename explicitely (instead of '-')
1619 2004-04-09 Martin Quinson
1621 - factorize more code between RL and SG in socket creation
1622 - Complete the implementation and tests of:
1624 o file (only in RL, and mainly for debugging)
1626 I lost 3 days to design a portable address resolver, and then decided
1627 that the prototype mainly have to run on my box.
1628 Addressing portability too early may be like optimizing too early :-/
1630 - use gras_init in the Tests instead of the crappy parse_log_opt
1631 (the latter function is removed)
1632 [Conditional execution]
1633 - New functions: gras_if_RL/gras_if_SG (basic support for this)
1634 [Code reorganisation]
1635 - Get rid of libgrasutils.a since it makes more trouble than it solves.
1636 Build examples against the RL library, since there is no way to disable
1637 its creation for now.
1639 For information, the beginning of coding on GRAS was back in june
1640 2003. I guess that every line has been rewritten at least twice since