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 * Implement MPI_Get_count, MPI_MAXLOC, MPI_MINLOC
40 * config: add the ability to set a default value after registration
41 Does not override any previously set value (e.g. from cmd line)
44 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
47 SimGrid (3.3.4) stable; urgency=low
49 The "Desktop Grid needs love too" release (also called Xmas release).
52 * Major speedup in the maxmin system solving by using lazy evaluation
53 Instead of solving completely the maxmin system at each iteration,
54 only invalidate (and recompute) the modified parts.
55 This new feature is enabled in default models but you can try to
56 turn it on with "--cfg:maxmin-selective-update=1" for other models.
57 * Cas01 IMproved as default CPU model
58 This CPU model is the same Cas01 model, but it uses the
59 maxmin-selective-update flag and a heap structure to manage
60 actions on SURF kernel.
61 It reduces the complexity to find the next action to finish and,
62 consequently, it's faster than the old Cas01.
63 This is the new default CPU model (Cas01).
64 * Rename the old Cas01 model to Cas01_fullupdate
65 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
66 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
67 * CpuTI (CPU Trace Integration)
68 A new CPU model whose objective is simulate faster when using
69 availability trace files.
70 Instead of using a full featured, over engineered maxmin system for
71 CPU modeling, this model does the pre-integration of traces files
72 to calculate the amount of CPU power available, and so, executes
73 faster than the old CPU models.
74 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
75 * Use LV08 as default network model since it gives better accuracy
76 for small messages and shouldn't change things for big ones.
77 Use --cfg=network_model:CM02 to get the previous behavior.
80 ******************************************
81 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
82 ******************************************
83 * The new CPU model may changes simulations!
84 The point is that events occurring at the exact same timestamp
85 are not scheduled in the same order with the old and new
86 version. This may be enough to completely change the execution
87 of simulations in some cases.
88 * The new network model will change simulations!
89 This new model is more realistic than the previous one, so you
90 should consider redoing your old experiments with this model.
91 Sorry for the inconvenience.
94 * Introduce the supernovae compilation mode
95 When compiled that way, the whole SimGrid (or almost) is put in a
96 single compilation unit and compiled in one shoot.
97 This is to help gcc which has difficulties to inline stuff from one
99 The speedup seem to be above 15%, althrough more tests are needed on
100 amd64 to confirm that gain.
103 * Port of MSG's mailbox on top of SIMIX network
104 The put/get mechanism was greatly simplified on the way.
107 * New SIMIX network module. Provides:
108 - Mailbox: rendez-vous mecanism to find with who you want to speak
109 - Synchronous send/recv: easier and hopefully faster since the
110 logic is handled in the maestro process directly now
111 - Asynchronous send/recv: you dreamt of it? It's here now
112 Too bad that nobody cared enough to propagate the change to MSG.
113 * Add semaphores as SIMIX synchronization mechanism.
116 * new function SD_daxload(char*) to load a DAX file
117 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
118 * Introduce typed tasks. Specify its kind and cost at creation.
119 At scheduling, just give where it should be placed, and the cost
120 for each involved resource is automatically computed.
121 Existing constructors so far (more to come of course):
122 - SD_task_create_comm_e2e() for end-to-end communication
123 - SD_task_create_comp_seq() for sequential computation
124 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
125 * new function SD_task_dump() for debuging display
126 * new function SD_task_dotty(task,FILE*) writing to file the info
127 about the task in dotty format
128 * SD_task_dependency_exists() can now cope with having one of its
129 arguments NULL. If so, it tests whether the other argument has any
131 * Add getters on list of preceding/following tasks:
132 SD_task_get_parents(task) and SD_task_get_children(task)
133 * Add getters on amount of workstations and list:
134 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
135 * Add getter on task kind: SD_task_get_kind(task)
136 * Update the start_time and finish_time of tasks on completion/failure
137 * Bugfix: Remove task from state swags when destroyed
140 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
143 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
144 dynar with one separate thread per value of the dynar.
145 * Change the prototype of xbt_thread_create(), sorry.
146 Added a boolean parameter indicating whether we want to join this
147 thread (used in SG only for now)
148 * Implement xbt_thread_join and xbt_thread_yield in SG also.
151 * GTNetS wrappers should now be usable again (and betterly tested too)
152 * Fix a major regression from 3.2 where the timeout provided to
153 MSG_task_put_with_timeout() was used as absolute time before which
154 the comm should be done.
155 * Start to fix the <cluster> tag.
156 - Internal links should be good now (beside of the loopback, which
157 use the private link instead)
158 - paths to the external world is still rather broken
159 - the <route:multi> tag is just broken. Actually that's brain-dead.
160 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
161 to make it less stupid
162 ** Check your platform with teshsuite/simdag/platforms/flatifier **
163 * Fix a source-level compatibility glitch from 3.2: after defining
164 MSG_USE_DEPRECATED, you can use the old name
165 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
166 * Allow to compile from the SVN with automake 1.11
167 * Fix some problems when using the "start_time" tag in deployment XMLs.
168 * Fix #8569: XBT/synchro.h has redundant declarations
169 * Fix #8563: MSG return values and exceptions
170 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
171 * Integrate patch #8636: Obey DESTDIR when installing documentation.
172 Thanks to Robson Peixoto.
173 * Fix a vicious bug in dictionaries inducing that some elements were
174 not freed on xbt_dict_free()
176 Portability report of this version:
177 * Main portability targets:
178 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
180 - mac leopard on i386
181 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
182 but nothing critical.
183 * Other platforms: windows, AIX and others were not tested for this release
185 Timing report of this version:
186 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
187 scenario parameters). From 8h to a few seconds in desktop grid settings.
188 * Supernovae brings about 25% speedup on i386.
190 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
192 SimGrid (3.3.3) stable; urgency=low
194 The "Need for Speed" release.
196 The timings done to validate the 3.3.2 were faulty.
197 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
199 The problem was a conversion from a manually handled vector to
200 xbt_dynar_t on the critical path.
201 xbt_dynar_foreach calls functions, inducing stack management crap.
203 We inlined these functions and xbt_dynar_foreach is now breath taking.
204 We also inlined xbt_swag_belong on the way.
206 Here are some approximate speedup measurements (on master/slaves
207 simulations lasting between 10s and 20s each):
208 3.3.1 -> 3.3.2: about same performance
209 3.3.2 -> 3.3.3: 40% speedup
210 3.3.1 -> 3.3.3: 40% speedup
211 3.3.1 with inline patch -> 3.3.3: 30% speedup
213 Our reading is that the refactoring which occurred in 3.3.2 made us
214 suffer much more from the xbt_dynar_foreach low performance, but
215 once we solved this, this refactoring proved to be very performance
216 effective. From the 40% speedup, somehow, 10% are due to the
217 inlining and 30% to the refactoring.
219 That's a pitty that gcc cannot inline functions placed in other files
220 alone. We have to choose between:
221 - break the encapsulation (by putting private data structures and
222 accessors in headers files to help gcc)
223 - live with low performance
224 - switch to a decent compiler such as icc (not quite possible).
226 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
228 SimGrid (3.3.2) stable; urgency=low
230 The "Simplicity does not preceed complexity, but follows it" release.
232 The main contributors of this release were (lexical order):
233 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
236 * Extract the routing logic into its own object.
237 (was dupplicated in network.c and workstation_LV07.c;
238 Allows to implement other ways of storing that info)
239 => kill now useless network_card concept
240 - Use dynar to represent routes (instead of void** + int*)
241 - kill link_set (use surf_network_model->resource_set instead)
242 - Add a command-line option to choose the routing schema to use
243 - Add three new models:
244 * Floyd (shortest path computed at initialization)
245 * Dijikstra (shortest path recomputed all the time)
246 * Cached Dijikstra (shortest path computed on need)
247 All these models where contributed by Silas De Munck, and are
248 described in his ICCS09 paper.
250 * Simplify model declaration
251 (less redirections, less function to write when defining a model)
252 - Factorize stuff between models:
255 surf_model_resource_set(model)
256 surf_model_resource_by_name(model, name)
257 - Unify the types of models in s_surf_model_t (using an union)
258 - Embeed fields of common_public directly into s_surf_model_t
259 - Rename model methods:
260 action_free ~> action_unref
261 action_change_state ~> action_state_set
262 action_get_state ~> action_state_get
263 - Change model methods into functions :
264 (model)->common_public->action_use ~> surf_action_ref
266 * Implement a generic resource; use it as ancestor to specific ones
267 (allows to kill duplicated code in models)
268 Drawback: timer command don't need no name nor properties;
269 workstation_CLM03 don't need no properties
270 (but I guess we can live with those few bytes wasted)
272 * Improve the action object model
273 - implement a constructor avoiding dupplicated code about field
274 initialization in generic_action part.
276 * Kill the SDP model: it has an external dependency, is deprecated
277 in flavor of modern lmm models, and didn't compile since a while
280 * Relocation of the context module from XBT to SIMIX.
281 (the context were decoupled from the simix processes, duplicating a lot of code)
282 => a lot of code was factorized
283 - less overhead is introduced during scheduling
284 - simpler API for the context factory
285 - the logic for process creation,destruction and manipulation was simplified
286 * Simplification of the s_smx_process_t data structure.
287 => accesing the simix level data associated to a process is faster now,
288 and the code is a lot more readable.
291 * Implement some more MPI primitives:
292 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
293 -implementation: Bcast: flat or 2-ary tree (default),
296 Allreduce: Reduce then Bcast
297 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
298 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
299 Alltoallv: flat tree, like ompi
301 * Add support for optimized collectives (Bcast is now binomial by default)
302 * Port smpirun and smpicc to OS X
305 * Kill SD_link_get_properties: hard to maintain and makes very little sense
306 Shout out if you used it.
309 * Display the list of still queued messages in SG mode when existing
313 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
314 * Add xbt_graph_node_get_outedges() [Silas De Munck]
315 * Add xbt_str_from_file(FILE*)
316 * Add xbt_dict_get_key achieving a linear reverse search
317 * Remove the context module
319 Portability report of this version:
320 * Main portability targets:
321 - Linux(debian)/x86/context
322 - Linux(debian)/x86/pthreads
323 - Linux(debian)/amd64/context
324 - Linux(debian)/amd64/pthreads
325 On these, we still have the eratic breakages of gras/pmm and
326 amok/saturate_sg reported in previous version. We still think
327 that the tests are the cause of the fault, not the tested code.
329 - Mac OSX Leopard/x86/context
330 Still false negative in tesh autotesting.
331 Smpi still fails, but this time because readlink does not accept -f
332 Everything seems to work properly beside of that.
335 - AIX version 5.3 (only tested contexts this time)
336 Smpi still fails there because mktemp is not installed.
337 Everything seems to work properly beside of that.
339 I managed to compile it for the first time, but several breakages.
340 Won't delay the release for this exotic platform.
342 * Windows: it's still lagging behind. If you want to help, please
345 Timing report of this version:
346 This version seem to be more than 5% faster than 3.3.1 (on linux
347 64bits with contextes). The gain is less than expected, we are
348 investigating this for next release.
350 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
352 SimGrid (3.3.1) stable; urgency=low
355 * Implement a --cfg-help to show existing configuration variables
356 * Build chain do not require doxygen in maintainer mode
359 * fix a bug on struct sizeof computation, which prevented the
360 exchange of arrays of structs in some conditions
361 - added a regression test about this in datadesc_usage
362 * Allow the exchange of 0-long dynamic vectors.
363 - for that, use -1 as indicator of dynamic size instead of 0
364 - This implied to change any size from unsigned long to long,
365 reducing a bit communication abilities, but I guess that with
366 64bits being quite common, this is more than enough.
367 - This also induce a protocol change, thus bumping network protocol
368 version from 0 to 1 (if we have external users, we have to get
369 clean on that point too ;)
370 - added two regression tests about this in datadesc_usage
371 * Be more verbose when propagating local exceptions
372 This helps debugging.
373 * Display the status of simulated processes when receiving SIGINT in
377 * Allow to control the simulation from a trace file.
378 New functions MSG_action_register() and MSG_action_trace_run()
379 The first one allows to associate a function execution to each
380 kind of action while the second one parses a trace file and
381 triggers the corresponding actions within the system.
382 For now, only a toy example is provided in examples/msg/actions
383 * Add an exemple of process migration in examples/msg/migration
384 * Fix a bug in task exchange which broke MSG_task_get_sender()
385 Add a teshsuite regression test for that.
386 [Bug: if MSG_task_get_sender() is called after sender exit,
388 * Fix a bug which prevented suspend/resume to work properly
389 * Display the status of simulated processes when receiving SIGINT
390 This fixes a regression of v3.3. due to the introduction of SIMIX
391 * Bug fixing in failure management:
392 - trace could not start by a failure at time 0
393 - failure during communications were not working
396 * Add SIMIX_process_set_name() to change the name of the current
397 process in the log messages.
398 * Store smx_hosts in a dict since we only retrieve them by name
399 * Move the configuration infrastructure to surf
402 * Move the configuration infrastructure to surf
405 * Massive internal cleanups:
406 - Store internal structures on processes instead of hosts (allows
407 to have more than one process per host, in addition of being more
409 - Cleanup the initialization/finalization process
410 - Kill a whole bunch of unneeded synchronization:
411 processes run in exclusive manner within the simulator
412 - Move queues from global tables to process data fields
414 - now accept -platform and -hostfile arguments
415 - Pass the right rank value to processes according to the hostfile
416 * Compile the examples by default, and use them as regression tests
417 * Implement MPI_Wtime()
418 * Change the reference speed to a command line option
421 * TCP_gamma can now be specified as command line option using
422 --cfg=TCP_gamma:10000000.0
423 * Change the --surf-path cmd line option into --cfg=path:
426 * Also include strbuff from xbt.h public header
427 * xbt_ex_display(): do not free the exception after displaying
428 This allows to do more with the given exception afterward.
429 Users should call xbt_ex_free() themselves.
433 Portability report of this version:
434 * Main portability targets:
435 - Linux(debian)/x86/context
436 - Linux(debian)/x86/pthreads
437 - Linux(debian)/amd64/context
438 - Linux(debian)/amd64/pthreads
439 These targets fail about 1/10 of times on gras/pmm, but we believe
440 that this is because of the test, not because of simgrid.
441 amok/saturate_sg fails even more rarely, and the test may not be
444 - Mac OSX Leopard/x86/context
445 The test suite still spits tons of errors because some obscure
446 force prevents us from removing the temporary directories
447 arguing that they still contain some metadata I've never heard of.
448 Smpi fails because seq is not installed.
449 Everything seems to work properly beside of that.
452 - AIX version 5.3 (both contexts and pthread)
453 Smpi still fails there because mktemp is not installed.
454 XML inclusions seems rosty on AIX.
456 * Windows: it's still lagging behind. If you want to help, please
459 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
461 SimGrid (3.3) stable; urgency=high
465 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
468 * Introduce the SIMIX module: factorize code between MSG and GRAS.
471 Until now, GRAS were using MSG as an interface to SURF. It was
472 quite difficult because both interface have several differences
473 (MSG channels vs GRAS sockets were the most notable point).
475 This also opens the gate to SMPI (which should occur soon) and speed
476 up simulations by to 40% (even if it were not the main goal).
478 **************************************
479 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
480 **************************************
481 The point is that events occuring at the exact same timestamp are
482 not scheduled in the same order with the old and new version. This
483 may be enough to completely change the execution of simulations in
484 some cases. Sorry for the inconvenience.
486 * Cleanup and upgrade the XML format to push further scalability
487 issues (check http://hal.inria.fr/inria-00256883/ for more info)
489 * Improve the testing infrastructure with tesh. Now a very large part of
490 the code is tested not only by being run but also by checking that the
491 output match an expected output [Mt].
493 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
494 is really less memory-demanding, which should allow you to use
495 larger files in SimGrid [AL].
497 * Inform valgrind about our contextes, so that it becomes usable
498 with the default (and more effecient) version of SimGrid
499 [contributed by Sékou Diakite, many thanks]
502 * Introduce a listener thread in charge of receiving incomming
503 messages from the network. It allows to overlap communication and
504 computation but most notably, it removes some stupid deadlocks due
505 to the fact that so far, a process could not send and receive at
506 the same time. This made most non trivial communication schema
508 * Convert the PIDs from long int to int to match the MSG ones (and
510 * New function: gras_agent_spawn() to launch a new process on
511 current host. Only working in simulation for now. [Mt]
512 * New function: gras_os_hostport() returning a constant form (ie,
513 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
516 * Make the backtrace of exceptions more human readable [Mt]
517 * New module: xbt/str [Mt]
518 a ton of string utility functions (split, join, printf to a newly
519 allocated buffer, trim, etc)
520 * New module: xbt/hash [Mt]
521 SHA1 hashing algorithm (more to come if needed)
522 * New module: xbt/synchro [Mt]
523 synchronization tools (mutex and conditions) working the same way
524 in simulation and in real life (mainly useful for GRAS, but not
526 * New module: xbt/queue [Mt]
527 classical producer/consumer synchronization scheme
528 * xbt_dynar_new_sync() creates a synchronized dynar. All access
529 (using the classical functions will get serialized) [Mt]
530 * Make dictionary internal table dynamic. No need to specify its size
531 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
533 * Make sure the log channels are organized as a tree under windows
534 (because of ANSI C compatibility issue, any channel were child of
538 * Cleaned many thing in surf and fixed a few bugs [AL].
539 * Add a nice command line configuration mechanism to compose models [AL].
540 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
541 the previous one (KCCFLN05). It relies on something that looks like
542 a max-min sharing mechanism but cannot be written as such. A new solver
543 was thus designed [AL].
544 * Add a new solver to lmm. Based on Lagrange optimization and
545 gradient-based descent, it enables to efficiently maximise systems s.a
547 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
549 This solver enables to propose two new network models for TCP Reno and
550 TCP Vegas based on Low's work. These models still need to be fully
551 tested though [Pedro Velho].
554 * Bug fix in SD_simulate. Now the time bound given as argument is
556 * Use the new parallel task model (ptask_L07) as default.
557 * Use the SURF command line configuration mechanism.
558 * 0-size tasks (for synchronization) should now work.
560 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
562 SimGrid (3.2) stable; urgency=high
566 We still experience issues on this platform, but we believe that at
569 GRAS API BREAKAGE (for simplification purpose, sorry):
570 * the gras_msgtype_by_name is not used anymore. Instead of
571 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
572 you can write (and must)
573 gras_msg_send(toserver, "request", &request);
574 - If you still want to pass a gras_msgtype_t to the function (to cache
575 the type and avoid the lookup time), use the gras_msg_send_() variant.
576 - Impacted functions:
577 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
578 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
579 * The callbacks are now expected to return 0 when everything went well
580 (just like the main() function)
582 GRAS new features and improvements:
583 * New module mecanism where user code can use per process globals [Mt]
584 This is similar to gras_userdata_*() functions, but for libraries. It
585 factorize some code developped over and over in the examples and AMOK.
586 It has still to be documented and used (only amok/peermanagement is
588 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
589 loss when they were small enough to fit into the buffer and sent quickly
590 enough so that they can all get received in one shoot.
591 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
592 if not found. Use the *_or_null() variant for the old semantic.
593 * In gras_msg_handle, do not discard messages without callback.
594 They are probably messages to be explicitly awaited later (ie, proofs of
595 mis-synchronization in userland since they are sent before being awaited)
597 * gras_socket_meas_send/recv: semantic changed!
598 The numerical arguments used to be (1) the total amount of data to send
599 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
600 messages. This was need for the fool willing to send more than MAXINT
601 bytes on quite fat pipes.
604 * Do really rename the hostmanagement module to peermanagement. [Mt]
605 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
606 but this is rather new and this was documented in the module
607 documentation (poor excuses, I admit)
608 * Bandwidth measurement semantic changed! This follows the changes to
609 gras_socket_meas_send/recv explained above.
612 * A sequential mode has been added to the workstations. When a workstation
613 is in sequential mode, it can execute only one task, and the other tasks
614 are waiting in a FIFO. [Christophe Thiery]
617 * The KCCFLN05 workstation model now handles parallel tasks. It is the
618 model for SIMDAG. [Christophe Thiery]
619 * Bug fix in the maxmin solver: Some values were close to 0 instead of
620 equal to 0, which caused some bad behaviors in
621 saturated_constraint_set_update. I now use a threshold mechanism like in
625 * When running manually src/testall, you select specific units [Mt]
626 testall is the result of our cunit mecanism, and should replace all
627 the scripty thingy around since bash don't run easily on billware.
629 * A mallocator system has been added. [Christophe Thiery]
630 Mallocators allow you to recycle your unused objects instead of freeing them
631 and allocating new ones.
633 Documentation update:
634 * FAQ reworking + New FAQs:
635 - "Valgrind spits tons of errors!" [Mt]
636 - "How to repport bugs" [Mt]
637 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
638 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
639 - Communication time measurement within MSG [AL]
640 - I experience weird communication times when I change the latency [AL]
643 - an introduction to the framework and to the used communication model
644 - an initiatic tour introducing the most proheminent features:
646 . Lesson 0: Installing GRAS
647 . Lesson 1: Setting up your own project
648 o Part 2: Message passing
649 . Lesson 2: Exchanging simple messages
650 . Lesson 3: Passing arguments to the processes (in SG)
651 . Lesson 4: Attaching callbacks to messages
652 . Lesson 5: Using globals in processes
653 . Lesson 6: Logging informations properly
654 . Lesson 7: Using internal timers
655 . Lesson 8: Handling errors through exceptions
656 . Lesson 9: Exchanging simple data
657 . Lesson 10: Remote Procedure Calling (RPC)
658 . Lesson 11: Explicitely waiting for messages
659 . Recapping of message passing features in GRAS
660 - A HOWTO section containing:
661 o HOWTO design a GRAS application
662 More are due, of course. They will come latter. In the meanwhile, you can
663 check the examples which are still here.
665 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
667 SimGrid (3.1) stable; urgency=high
671 There was a stack corruption somewhere, visible only when optimizing
672 with these versions. [Vince]
675 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
676 module that enabled to play with Directed Acyclic Graphs. It is built
677 directly on top of SURF and provides an API rather close to the old
678 SG. Some old codes using SG are currently under rewrite to check that
679 all needful functions are provided. [Christophe Thiery]
682 * Complete rewrite of the KCCFLN05 workstation model. It is now an
683 extension of the classical CLM03 model that gracefully handles
684 failures. This is now the default model for MSG and GRAS. It doesn't
685 handle parallel tasks yet though. [AL]
686 * Bug fix: Weights were not correctly set in the network part.
687 WARNING: This may have resulted in incorrect results with simulations
688 where there are more than one flow on a given link. [AL]
691 * After a (long ?) discussion on simgrid-devel, we have decided that the
692 convention we had on units was stupid. That is why it has been decided
693 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
694 WARNING : This means that all previous platform files will not work as
695 such with this version! A warning is issued to ask users to update
697 A conversion script can be found in the contrib module of the CVS, under
698 the name contrib/platform_generation/surfxml_update.pl [MQ]
701 * Bug fix: Processes were started in reverse order, wrt deployment file.
702 WARNING: if your code relies on this bug, please fix it. [AL]
703 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
704 being executed on two different locations. [AL]
705 * Bug fix: Failures are now better supported thanks to Derrick's tests
706 (there was many failure situations I hadn't thought of and that weren't
707 correctly handled). [AL]
708 * New function: MSG_host_is_avail indicates you whether a given m_host_t
712 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
713 Exception occurring on server-side are propagated back to client (!).
715 API CHANGE: the callback changed their prototype. Change:
716 int my_handler(gras_socket_t expeditor, void *payload_data) {
718 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
719 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
721 * New! function: gras_msg_handleall to deal with all messages arriving
722 within a given period.
723 * New! function: gras_socket_server_range to get a server socket in a
724 range of port numbers (ease to avoid port number conflicts) [MQ]
725 * New! gras processes display their backtrace when they get a SIGUSR1
726 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
727 Sweet to debug RL processes [MQ]
731 - Do not force experiment sizes to be expressed in kb, or it becomes
732 impossible to measure the latency this way (needs one byte-long tests)
733 WARNING: this changes the amok_bw_* function semantic. [MQ]
734 - Implements the link saturation stuff. [MQ]
735 * Peer management module:
736 New! module factorizing code that we wrote over and over [MQ].
739 * New module: cunit (my jUnit implementation in ansi C) [MQ]
740 - Test units are placed directly into the library code, they get extracted
741 automatically and placed into the src/testall binary.
742 - Convert most of the XBT tests to this system.
743 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
744 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
745 live in the same C code. This required to change a little bit the API
746 of surfxml parsing but shouldn't be an issue for end-users. [AL]
747 * New module: sparse graph structure with basic algorithms (this is work
748 in progress and the API is not considered to be frozen yet). [AL]
749 * Display more information on backtraces: source line & function names are
750 now displayed just like valgrind does (rely on addr2line tool) [MQ]
751 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
752 * Reworked a little bit some #include statements to load only required
753 headers. Some user code that relied on SimGrid to include stdlib or
754 stdio may need to include it by themselves. [AL]
755 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
757 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
758 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
759 but I guess that almost nobody used those parts. [MQ]
761 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
763 SimGrid (3.0.1) stable; urgency=low
766 * Unfortunately, I had missed 5 misnamed functions:
767 xbt_fifo_item_t xbt_fifo_newitem(void);
768 void xbt_fifo_freeitem(xbt_fifo_item_t);
769 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
770 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
771 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
772 They're now deprecated. Please use their new versions:
773 xbt_fifo_item_t xbt_fifo_new_item(void);
774 void xbt_fifo_free_item(xbt_fifo_item_t);
775 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
776 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
777 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
779 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
780 * Documentation: xbt_log module unmercifully reworked [MQ]
781 * Bugfix: there was a problem with the ending of contexts with
782 the pthread backend. It caused some weird deadlock or behavior
783 depending on the pthread implementation. [AL]
784 * Bugfix: get the exceptions raised in the simulator repport where
785 and why they come from when they are not catched in time [AL, MQ]
788 * Bugfix: Do repport the error when two non-connected hosts try to
789 exchange data (Thanks to Flavien for stumbling into this one) [AL]
792 * Add additionnal checkings on communications. Assert that two
793 communicating hosts are connected by a set of links... [AL]
796 * Add additionnal checkings on channel values in communication [AL]
797 * New: MSG_task_get_source to see on which host a task was generated [HC]
798 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
799 the number of tasks waiting to be received on channel and sent
801 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
802 waits for the first task coming from a given host.. [AL]
804 GRAS new functionnalities: [MQ]
805 * Enhance the parsing macro to allow the size of multidimentional objects
806 to be given thru annotations.
807 * New example (and documentation): Matrix Multiplication a la RPC
808 (as when I was young!) and fix a bunch of bugs found on the way.
810 GRAS performance improvements: [MQ]
812 * Reduce the amount of cbps creation/destruction by making it static to
813 datadesc_send/recv() and using a (newly created) cbps_reset (based on
816 * Change libdata to a set so that we can search for stuff by ID (and thus
817 reduce the insane amount of dict lookups)
820 * Actually implement gras_datadesc_copy() so that we don't have to mimick
821 RL communication on top of SG since it's so uneffective.
822 It may also be used for inter-thread communication in RL, one day.
823 * Use gras_datadesc_copy() to exchange messages on top of SG
825 - improve message exchange performance on top of SG
826 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
827 * Don't exchange on the network the size of the used part of buffer,
828 instead, specify the possible buffer size to read().
830 - reduces the amount of read/write calls (one pair per exchange)
831 - reduces the amount of exchanged data (the size)
832 - allows to retrieve all arrived data on receiver side, if we don't need
833 it right now (subsequent read will peek the buffer)
834 - allows the receiver to proceed with the begining of the stream before
835 everything is arrived
836 - make it possible to build an iov transport (using readv/writev)
838 - take care of the data with non-stable storage (like stacked data),
840 * If possible, TCP send uses vector I/O (when writev() is here)
841 - Don't use it for receive since we send data sizes and data on the
842 same stream, so we wouldn't be able to chain large amount of chunks
843 before having to flush the stuff to read the size.
844 * Rework the transport plugin mecanism to simplify it and reduce the
845 amount of pointer dereferencement when searching for the right function
848 * I guess that now, we do almost as few system calls as possible while
849 doing as few data copy as possible.
851 To improve it further, we could try to send all the sizes first and then
852 all the data (to use iov on receiving size), but it's only a partial
853 solution: when you have 2 dimensional data, the sizes of the second
854 dimension is data of the first dimension, so you need 3 streams.
856 I'm not sure the potential performance gains justify the coding burden.
858 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
860 SimGrid (3.00) stable; urgency=high
863 * New! Give the possibility to hijack the surf parser and thus bypass
864 MSG_create_environment and MSG_launch_application. Have a look at
865 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
867 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
869 SimGrid (2.96) unstable; urgency=low
874 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
875 This deprecates the xbt_error_t mecanisms.
876 It modifies (simplifies) all XBT and GRAS API.
877 MSG API keeps unchanged (exceptions raised by XBT are catched from
878 within MSG and masked with existing error handling facilities)
881 * New! Add a FATPIPE model. [AL]
882 * New! Add a parallel task model. [AL]
883 * New! Add automatically a loopback interface (in the default
884 network model) if none was precised.
887 * Bugfix: MSG_process_resume now works with the current running process.
889 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
890 * Modification of MSG_task_get_compute_duration. Once a task has been
891 processed, the value returned by this function is now equal to 0. [AL]
892 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
893 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
894 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
895 of a m_task. For now, MSG_task_cancel only works with computation
897 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
898 of the processor (in Mflop/s) regardless of the current load on the
900 * API Change: use proper naming convention for MSG_getClock and
901 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
903 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
904 This function changes the priority of a computation task. This priority
905 doesn't affect the transfer rate. A priority of 2 will make a task
906 receive two times more cpu power than the other ones. This function
907 has been added to suit the needs of Nguyen The Loc and hasn't been that
908 much tested yet. So if it fails, please report it and send me your code.
910 * API Change: removed all functions and types that were marked "deprecated"
911 since many months. Renamed MSG_global_init_args to MSG_global_init.
913 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
915 SimGrid (2.95) unstable; urgency=low
918 * Steal some nice code to GNU pth to fix context detection and usage [AL]
919 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
920 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
923 * Bugfix: Allow absolute paths for platform description files [MQ]
924 * Bugfix: do free the variables after use. Leads to drastic performance
926 * Implement max_duration (ie, timeouts) on resources [AL]
929 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
931 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
932 the needed support (timeouts) [AL]
935 * Implement measurement sockets. You can now get the bandwidth between two
936 hosts thanks to AMOK (see below). [MQ]
937 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
938 dynar over the network (yeah) [MQ]
939 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
940 * simple/static token-ring example. [Alexandre Colucci and MQ]
941 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
945 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
946 type parsing. "short" and "long" modifiers were also ignored; other
947 modifier (such as reference level) are still ignored. [MQ]
948 * Embeed the buffer size within the buffer itself on SG. [MQ]
949 That way, send() are atomic and cannot get intermixed anymore (at least
950 the ones which are less than 100k; bigger messages still have the issue)
951 * Array size pushed by the field, not by the field type (or each
952 and every long int will push stuff to the cbps) [MQ]
953 * use select() to sleep since it allows to portably sleep less than one
956 GRAS (minor cleanups)
957 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
960 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
961 * type category 'ignored' killed as it was never used and were difficult
963 * whether a type can cycle or not is now a flag, leaving room for more
964 flags (as "ignored", if we feel the need one day ;)
965 * Rename raw sockets to measurement sockets since "raw" has another
966 meaning in networking community.
969 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
970 and offers features not belonging to GRAS but that most applications
971 need. One day, it may be a set of plugins loadable at runtime.
972 * New module: bandwidth
973 bandwidth measurement between arbitrary nodes running this module. [MQ]
975 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
977 SimGrid (2.94) unstable; urgency=low
979 The first beta release of SimGrid 3 !
983 * Update the main page and the FAQ. Adding references to gforge.
986 * Add a gras_os_getpid function.
989 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
990 * Extend the logs so that they also print PID, hostname, date, ... if
992 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
993 and kill the old version which were in testsuite/
994 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
998 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
999 for users. Instead, each programming environment (GRAS, MSG,...) use it
1000 when needed to provide such a feature to users.
1001 Don't shortcut the mecanism or you will also shortcut the virtualization
1002 you need on the simulator.
1006 * Cleanups in configury with regard to compile optimization/warning flags.
1007 Also add -fno-loop-optimize to any powerpc since it's the optimization
1008 killing gcc (< 3.4.0).
1009 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
1010 needed by MSG examples complications
1011 * Borrow configury beautifications from PHP
1014 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
1015 warning (thanks loris for stumbling into this one).
1016 * Bugfix: stop loading private headers (gras_config.h) from the public
1020 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
1021 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
1022 RL would imply a DNS resolver, which is *hard* to do in a portable way
1023 (and therefore delayed).
1024 * Implement a real timer mecanism and use it in timing macros. This allows
1025 to avoid rounding errors and get a 0.000005 sec precision in timing
1026 macros. While I was at it, various cleanups:
1027 - allow to declare more than one timed section per file (fix a stupid bug)
1028 - move some private declaration to the right place
1029 - merge conditional execution and timing macros into emulation module
1030 - document the module
1031 - make sure the module cleanups its mess on gras_exit
1032 * Documentation improvements:
1033 - (new) how to compile applications using GRAS
1034 - (new) emulation support (timing macros)
1036 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
1038 SimGrid (2.93) unstable; urgency=low
1040 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
1043 - Use Paje properly where used. Still to be sanitized properly.
1044 - Portability fix: Add an implementation of the contexts using pthread
1048 - Add xbt_procname(): returns the name of the current process.
1049 Use it to show the current process's name in all logging.
1051 - fix detection of older flex version and the reaction, since we do
1052 depend on modern ones (we use lex_destroy)
1053 - Better separation of SG and RL in the libs: remove all simulation code
1054 from libgras. As a result, this lib is now only 200k when stripped.
1055 Some of the xbt modules may also be duplicated (two sets and such) and
1056 should be cleaned/killed before SG3.
1057 - Insist on using xlC on AIX because of weird problems involving gcc there.
1058 - Cleanup the make remote stuff. This is now done by scripts
1059 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
1060 mainly for our private use, but we're working on changing them to user
1063 - Bugfix: flush the socket on close only if there is some *output*.
1064 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
1066 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
1069 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
1071 SimGrid (2.92) unstable; urgency=low
1073 Alpha 3 on the path to SimGrid 3
1077 - New! First try of benchmarking macros.
1078 - New! First try so that gras_stub_generator generate deployment and
1079 remote compilation helpers.
1081 - Bugfix: Initialization fix in msg_test.
1085 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
1087 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
1089 - API Change: gras_os_sleep to take the amount of seconds as a double.
1090 Accepting an int was error prone since it was the only location where
1091 seconds were coded as such. It leaded to damn rounding errors.
1092 - Bugfix: Hard to belive that timers ever worked before this.
1094 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
1096 SimGrid (2.91) unstable; urgency=low
1098 Alpha 2 on the path to SimGrid 3
1102 - Bug fix in the lmm_solver.
1104 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
1105 through the function MSG_paje_output.
1106 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
1107 - It is possible to bound the rate of a communication in MSG with
1108 MSG_task_put_bounded() (was already in the previous version but I had forgotten
1109 to write it in the changelog).
1110 - Bug fix to let GRAS run on top of MSG until we move it directly on top
1115 - Various cleanups to the autotools stuff
1116 - Begin to move Gras examples to examples/gras/
1117 - Let make distcheck work again (yeah!)
1119 - documentation overhauled using doxygen.
1120 gtk-doc-tools is dead in SimGrid now.
1121 - Automatically extract all existing logging categories, and add the list
1122 to the documentation (long standing one, to say the less)
1124 - Cleanup the known architecture table. Reorder the entries to group what
1125 should be, and use a more consistent naming scheme.
1126 (some of the test dataset are still to be regenerated)
1127 - New! Allow library to register globals on each process just as userdata
1129 This is implemented using a xbt_dict and not a xbt_set, so we loose the
1130 lookup time (for now).
1131 Use it in msg and trp.
1132 This cleans a lot the internals and helps enforcing privacy of the
1133 headers between the gras components.
1134 - New! Add a timer mechanism, not unlike cron(8) and at(1).
1135 - Bugfix: gras_os_time was delirious in RL.
1136 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
1138 - Reenable GRAS now that it works.
1140 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
1142 SimGrid (2.90) unstable; urgency=low
1144 Alpha 1 on the path to SimGrid 3
1146 * It is a long time since the last release of SimGrid. I'm sorry about
1147 that but as I had told you, I was rewriting a lot of things. I apologize
1148 to those who had been reporting bugs to me and that I had not answered.
1149 If your bug is still in the new version, please tell me. Here is a
1150 summary of the main changes.
1152 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
1153 lead by Martin Quinson. As a consequence SimGrid gains a lot in
1154 portability, speed, and a lot more but you'll figure it out later.
1155 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
1156 I wanted to release the new MSG as soon as possible and I have
1157 broken GRAS, which is the reason why, for now, only MSG is fully
1158 functional. A laconic description of these projects is available
1159 in the documentation.
1161 * REVOLUTION 2: I have removed SG and I am now using a new simulation
1162 kernel optimized for our needs (called SURF but only the developers
1163 should use it). Hence, MSG is now roughly 30 times faster and I think
1164 that by rewriting a little bit MSG, I could event speed it up a little
1165 bit more. Beside the gain in speed, it is also much easier to encode a
1166 new platform model with SURF than it was with SG. More to come...
1168 * REVOLUTION 3: I have tried to change a little as possible the API of
1169 MSG but a few things really had to disappear. The main differences
1170 with the previous version are :
1171 1) no more m_links_t and the corresponding functions. Platforms are
1172 directly read from a XML description and cannot be hard-coded
1173 anymore. The same format is used for application deployment
1174 description. The new format is described in the documentation.
1175 Have a look in tools/platform_generation. There is a tiny script
1176 that converts from the old platform format to the new one. Concerning
1177 the application deployment format, parsing the old one is tricky.
1178 I think most of you should however be able to convert your files. If
1179 it is really an issue, I can write a C code that does the conversion.
1181 2) the toolbox tbx does not exist anymore. We now have a library
1182 with much more data-structures but without the hash-tables (we have
1183 dictionaries that are much faster).
1185 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
1187 *****************************************************************************
1188 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
1189 * don't feel like converting the oldies. (Mt) *
1190 *****************************************************************************
1193 Version 2.90: "the long awaited one"
1194 - Finished rewriting and debugging MSG. Rewrote the documentation.
1195 - disable GRAS for now since it needs to be ported to the newest SG
1198 - Finish the port to windows (using mingw32 for cross-compile)
1201 - Main loop and datastructures of SURF. A cpu resource object is
1202 functional. Surf can thus be used to create cpu's with variable
1203 performance on which you can execute some actions.
1205 2004-11-15 Martin Quinson
1206 - Port to ARM. Simply added the alignment and size descriptions. Should
1207 work, but the ARM machines are so slow that I didn't had the opportunity
1208 to 'make check' over there yet.
1210 2004-11-15 Arnaud Legrand
1211 - Trace manager now written. It uses a heap structure and is therefore
1212 expected to be efficient. It may however be speeded up (particularly
1213 when many events occur at the same date) by using red and black
1214 trees. One day maybe...
1215 - Max-min linear system solver written. It uses a sparse matrix
1216 structure taking advantage of its expected use. Most operations are
1217 O(1) and free/calloc are called as few as possible. The computation of
1218 the minimum could however be improved by using a red and black tree
1221 2004-11-03 Arnaud Legrand
1222 - Rename every gras_* function that was in xbt/ to its xbt_
1224 - Add a heap and a doubly-linked list to xbt
1225 - Added a dichotomy to the dictionaries. make check works as well before
1226 so I assume that the patch is correct. I do not know however if things
1227 run effectively faster than before now. :)
1229 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
1230 SimGrid, and the version number is bumped to 2.x
1232 2004-10-29 Martin Quinson
1233 - Introduction of the remote errors.
1234 They are the result of a RMI/RPC on the remote machine.
1235 ErrCodes being scalar values, you can't get the host on which those
1236 errors did happen. Extending the error mechanism as in Gnome is possible.
1237 No idea yet whether it is a good idea.
1239 2004-10-28 Martin Quinson
1240 - Interface revolution: the Starred Structure Eradication.
1241 I used to do typedef struct {} toto_t; and then handle *toto_t.
1242 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
1243 - ???_t is a valid type (builded with typedef)
1244 - s_toto_t is a structure (access to fields with .)
1245 - s_toto is a structure needing 'struct' keyword to be used
1246 - e_toto_t is an enum
1247 - toto_t is an 'object' (struct*)
1249 typedef struct s_toto {} s_toto_t, *toto_t;
1250 typedef enum {} e_toto_t;
1251 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
1252 s_toto_t) is private.
1254 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
1255 so that it can set the variable to NULL. It was so for dicts and sets,
1256 it changed for dynars.
1258 - Fix a bunch of memleaks in dict_remove
1259 - Fix a bug in sg/server_socket opening: it failed all the time.
1261 2004-10-07 Martin Quinson
1262 - Speed up dynar lookup operation a bit.
1264 gras_dynar_get is dead.
1266 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
1267 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
1268 (which gives you the address of the stored data).
1270 gras_dynar_get_as is an helpful macro which allows you to retrieve a
1271 copy of the data using an affectation to do the job and not a memcpy.
1273 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
1274 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
1276 It does not really speedup the dynar test because they are
1277 setting elements all the time (and look them seldom). But the dict does
1278 far more lookup than setting.
1280 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
1282 2004-10-05 Martin Quinson
1283 - Allow to (en/dis)able the cycle detection at run time.
1285 Whether we should check for cycle or not is now a property of each
1286 datatype. When you think there may be some cycle, use datadesc_cycle_set.
1287 datadesc_cycle_unset allow to remove this property when previously set.
1289 Note that the cycle detection is off by default since it impacts the
1290 performance. Watch the data you feed GRAS with ;)
1292 This property is hereditary. Any element embedded in a structure having it
1293 set have it set for the time of this data exchange.
1295 You should set it both on sender and receiver side. If you don't set it on
1296 sender side, it will enter an endless loop. If you forget on receiver
1297 side, the cycles won't be recreated after communication.
1299 - Header reorganization.
1300 Kill gras_private.h, each submodule must load the headers it needs.
1302 2004-10-04 Martin Quinson
1303 - Interface revolution: do not try to survive to malloc failure.
1305 Now, gras_malloc and friends call gras_abort() on failure.
1306 As a conclusion, malloc_error is not a valid error anymore, and all
1307 functions for which it was the only gras_error_t return value are
1308 changed. They now return void, or there result directly.
1309 This simplify the API a lot.
1311 2004-09-29 Martin Quinson
1312 - Re-enable raw sockets.
1313 Created by gras_socket_{client,server}_ext;
1314 Used with gras_raw_{send,recv}
1317 It should allow to kill the last bits of gras first version soon.
1319 This is not completely satisfactory yet (duplicate code with
1320 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
1323 - Simplify transport plugin (internal) interface by not passing any
1324 argument to _server and _client, but embedding them in the socket
1327 2004-09-28 Martin Quinson
1328 - Finish the port to AIX.
1329 autoconf was my problem (segfault within the malloc replacement
1330 function. No idea why)
1332 2004-09-16 Martin Quinson
1333 - Fix some size_t madness on 64bit architectures.
1335 2004-09-08 Martin Quinson
1336 - Reduce the number of system headers loaded, overload some more system
1337 calls (such as malloc to cast the result of the system one, and work
1339 - Fix and reintroduce the config support
1341 2004-09-07 Martin Quinson
1342 - Source code reorganization to allow Arnaud to surf all over there.
1343 - Allow to document the logging categories.
1344 - Remove all uppercase from logging categories and useless cleanup in names.
1346 2004-08-18 Martin Quinson
1347 Version 0.6.2 (protocol not changed; API changed)
1348 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
1349 gras_error_t), and NULL when not found. Functions expecting a msgtype
1350 as argument (msg_wait; msg_send) deal with NULL argument by providing a
1351 hopefully usefull message.
1352 - Portability to prehistoric sparcs again
1354 2004-08-17 Martin Quinson
1355 Version 0.6.1 (protocol not changed; ABI not changed)
1356 - prealloc some buffers to speed things up
1358 2004-08-11 Martin Quinson
1359 Version 0.6 (protocol not changed; ABI expended)
1360 - The parsing macro can deal with the references, provided that you add
1361 the relevant annotations (using GRAS_ANNOTE(size,field_name))
1363 2004-08-09 Martin Quinson
1364 Version 0.5 (protocol not changed; ABI changed)
1365 - Allow to off turn the cycle detection code in data exchange at
1366 compilation time. It should be at run time, but I'm short of time (and
1367 the config stuff is still broken). That way, we keep dict out of the
1368 critical path, which is good because the performance is poor:
1369 - search not dichotomial yet
1370 - dynar give no way to access their content and memcpy everytime
1371 - In composed data description (struct, ref and so on), stop foolness of
1372 keeping the subtype's ID, but store the type itself. This keeps sets out
1373 of the critical path, which is good since they rely on dynar and
1374 dictionnaries. The only loose of that is that we cannot detect the
1375 redeclaration of a structure/union with another content (but I'm not sure
1376 the code detected well this error before anyway). We still can detect
1377 the redefinition discrepancy for the other types.
1378 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
1379 it breaks the code because of type-punning used all over the place).
1380 This breaks on all non-gcc architectures (for now).
1382 All those changes (plus the buffer of last time) allow me to gain 2 order
1383 of magnitude on cruel tests consisting of 800000 array of integers on two
1384 level of a hierarchical structure (200 secondes -> 4 secondes)
1387 - the selector of reference must now return the type it points to, not
1388 the ID of this type.
1390 2004-08-06 Martin Quinson
1391 Version 0.4 (protocol changed; ABI not changed)
1392 - Allow to pass --gras-log argument to processes in simulation mode. Really.
1393 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
1394 - Implement a buffer transport, and use it by default (it relies on tcp in
1395 real life and on sg in simulation).
1396 That's a bit hackish since I had a new field to the structure to store
1397 its data without interfering with the subtype ones. Inheritance
1398 is tricky in C. And that's a kind of reverse inheritance with one class
1399 derivating two classes. Or maybe a game with java interfaces. Anyway,
1400 that's damn hard in C (at least).
1401 Moreover, I got tired while trying to ensure plugin separation and
1402 genericity in SG mode. MSG wants me to do weird things, so let's go for
1403 cruel hacks (temporarily of course ;).
1404 See comment in transport_private.h:71
1405 - do not include all the _interface headers in private but in the files
1406 which really need them (to cut the compilation time when they are
1409 2004-07-26 Martin Quinson
1410 Version 0.3 (protocol not changed; ABI changed)
1411 - Major overhault of the datadesc interface to simplify it:
1412 - shorted the function names:
1413 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
1414 - add a trivial way to push/pop integers into the cbps without malloc.
1415 This allows to make really generic sub_type description, which simply
1416 pop their size of the stack.
1417 - add a function gras_datadesc_ref_pop_arr() which does what users want
1418 most of the time: Declare a dynamic array (which pops its size of the
1419 stack) and declare a reference to it. Poor name, but anyway.
1420 - kill the post-send callback, add a post-receive one
1422 2004-07-23 Martin Quinson
1423 Version 0.2 (protocol changed; ABI changed)
1424 - add some testing for cpbs in the test cases, and fix some more bugs.
1425 This invalidate again the little64 data file, since I cannot regenerate
1427 - remove an awfull optimization in the logging stuff, allowing me to:
1428 - understand it again
1429 - learn gcc how to check that the argument match the provided format
1430 - fix all errors revealed by gcc after that
1431 - internal keys of dict are not \0 terminated. Deal with it properly in
1432 loggings instead of segfaulting when the user want to see the logs :-/
1434 2004-07-22 Martin Quinson
1435 - Fix some stupid bug preventing cbps (callback postit) from working
1437 2004-07-21 Martin Quinson
1438 - Some documentation cleanups
1439 - remove the useless last argument of msgtype_declare
1440 - rename the Virtu functions to fit into the 'os' namespace
1441 - move headers src/include -> src/include/gras/ and stop fooling with
1442 gras -> . symbolic link
1443 - make distcheck is now successful
1445 2004-07-19 Martin Quinson
1447 - Build shared library also
1448 - Install html doc to the right location
1449 - stop removing maintainer files in make clean
1450 - build tests only on make check
1452 2004-07-13 Martin Quinson
1454 - No major issue in previous version => change versionning schema
1455 - Re-enable little64 convertion test now that Abdou kindly regenerated the
1456 corresponding dataset.
1458 2004-07-11 Martin Quinson
1460 - Get it working with any kind of structure (we can compute the padding
1461 bytes remotely for all the architectures I have access to)
1462 - Implement the structure parsing macro (still not quite robust/complete)
1463 - Improvement to the remote testing toysuite
1465 2004-07-10 Martin Quinson
1466 [autoconf mechanism]
1467 - get ride of a bunch of deprecated macros
1468 - actually run the test for two-compliment, not only compile it :-/
1469 - test whether the structures get packed (and bail out if yes. Damn.
1470 Alignment is a serious matter)
1471 - test whether the structures get compacted (but respecting the alignment
1472 constraints of each types)
1473 - test whether the array fields of structures can straddle alignment boundaries
1475 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
1476 (took me 2 hours to find that bug, looking at the wrong place)
1477 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
1478 before sending/receiving and are used to compute the offsets of fields
1479 - Given that padding size depend even on compiler options, keep track of
1480 alignment and aligned_size only for the current architecture. Not a big
1481 deal since we send structure fields one after the other (seems
1483 - Add the datastructure used for IEEE paper by the PBIO guys to the test
1484 program, let it work on linux/gcc/little32. portability todo.
1486 2004-07-08 Martin Quinson
1487 - import and improve remote compilation support from FAST
1488 - make sure make check works on half a dozen of machines out there
1490 2004-07-07 Martin Quinson
1491 Let's say it's version 0.0.3 ;)
1492 - Implement conversions (yuhu!)
1493 - Let it work on solaris (beside conversion, of course)
1494 - Stupid me, using rand() to generate the conversion datatests in not wise.
1496 2004-07-06 Martin Quinson
1497 - Let make dist work, since I'm gonna need it to compile on remote hosts
1498 - Let Tests/datadesc_usage write the architecture on which the file was
1499 generated as first byte.
1500 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
1501 architecture descriptions.
1502 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
1503 on those architectures.
1504 - Optimization: send/recv array of scalar in one shoot
1506 2004-07-05 Martin Quinson
1507 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
1509 - Plug a whole bunch of memleaks
1510 - each process now have to call gras_{init,exit}. One day, their log
1511 settings will be separated
1512 - Continue the code factorisation between SG, RL and common in Transport.
1514 2004-07-04 Martin Quinson
1516 - Redistribution between SG and RL.
1517 We wanna have to accept in SG, so move accepted related parts of RL in
1518 the common part. (more precisely, the dynar of all known sockets is no
1519 more a static in transport.c, but part of the process_data)
1521 [gras_stub_generator]
1522 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
1524 2004-07-03 Martin Quinson
1525 - Create a new log channel tbx containing dict, set, log, dynar (to shut
1526 them all up in one shot)
1528 - Fix the ugly case of reference to dynamic array.
1529 - New (semi-public) function gras_datadesc_size to allow the messaging
1530 layer to malloc the needed space for the buffer.
1532 - gras_socket_close now expect the socket to close (and not its address to
1533 put NULL in it after it). This is because the socket passed to handlers
1534 is one of their argument (=> not writable).
1536 - propagate the interface cleanup from last week in datadesc, ie remove a
1537 superfluous level of indirection. User pass adress of variable
1538 containing data (both when sending and receiving), and not of a variable
1539 being a pointer to the data. Let's say that I like it better ;)
1540 The price for that is constructs like "int msg=*(int*)payload" in
1541 handlers, but it's a fine price, IMHO.
1543 - Let it work in RL (yuhu)
1545 2004-06-21 Martin Quinson
1547 - porting SG plugin and SG select to new standards (works almost).
1548 - plug memleaks and fix bugs around.
1551 - cleanup the prototype of data recv and force users to specify when they
1552 want to handle references to objects. Test case working even for cycles.
1553 - plug memleaks. Valgrind is perfectly ok with this.
1555 2004-06-12 Martin Quinson
1557 - cleanup the separation between plugin and main code in plugin creation
1559 2004-06-11 Martin Quinson
1561 - Reput hook for raw sockets, needed for BW experiments
1562 - kill a few lines of dead code
1563 [Data description] Interface cleanup
1564 - gras_datadesc_by_name returns the searched type or NULL.
1565 That way, no variable is needed to use a type desc once, which makes
1567 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
1568 two parameters were strings (field name, type name), leading to
1570 [Dicos] Interface cleanup
1571 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
1572 This is consistant with the dynar API.
1574 2004-04-21 Martin Quinson
1576 - Porting to new standards.
1578 - interface cleanup.
1579 There is no bag anymore, no need to take extra provision to mask the
1580 pointers behind "ID".
1581 Better splitup of functions between files create/exchange/convert.
1582 This is still a bit artificial since convert and receive are so
1583 interleaved, but anyway.
1585 - add a queued message list to procdata (the ones not matching criteria
1587 - factorize some more code between SG and RL wrt procdata
1589 - use gras_exit in example to track memleaks
1590 - get rid of gs_example now that GS is properly integrated into gras
1591 - update run_test to integrate the lastest tests (datadesc)
1593 - rename WARNINGn macros to WARNn since it prooved error-prone
1595 2004-04-19 Martin Quinson
1597 - register init/exit functions within gras module mechanism
1598 - send/receive function.
1599 Convertion is not implemented, but short-cutted if not needed.
1600 struct/array elements are sent one by one (instead of block-wise), but
1601 nobody really cares (yet). Get a prototype before optimizing.
1602 - tests (using a file socket) for DD send/receive on:
1603 - base types: int, float
1604 - array: fixed size, string (ie ref to dynamic string)
1605 - structure: homogeneous, heterogeneous
1606 - chained list, graph with cycle
1607 Believe it or not, valgrind is not too unhappy with the results. The
1608 cycle happily segfaults, but the others are ok. And I'm sick of pointers
1612 - Bugfix when using a filename explicitely (instead of '-')
1614 2004-04-09 Martin Quinson
1616 - factorize more code between RL and SG in socket creation
1617 - Complete the implementation and tests of:
1619 o file (only in RL, and mainly for debugging)
1621 I lost 3 days to design a portable address resolver, and then decided
1622 that the prototype mainly have to run on my box.
1623 Addressing portability too early may be like optimizing too early :-/
1625 - use gras_init in the Tests instead of the crappy parse_log_opt
1626 (the latter function is removed)
1627 [Conditional execution]
1628 - New functions: gras_if_RL/gras_if_SG (basic support for this)
1629 [Code reorganisation]
1630 - Get rid of libgrasutils.a since it makes more trouble than it solves.
1631 Build examples against the RL library, since there is no way to disable
1632 its creation for now.
1634 For information, the beginning of coding on GRAS was back in june
1635 2003. I guess that every line has been rewritten at least twice since