1 SimGrid (3.3.4) unstable; urgency=low
3 The "Desktop Grid needs love too" release.
6 * Major speedup in the maxmin system solving by using lazy evaluation
7 Instead of solving completely the maxmin system at each iteration,
8 only invalidate (and recompute) the modified parts.
9 This new feature is enabled in default models but you can try to
10 turn it on with "--cfg:maxmin-selective-update=1" for other models.
11 * Cas01 IMproved as default CPU model
12 This CPU model is the same Cas01 model, but it uses the
13 maxmin-selective-update flag and a heap structure to manage
14 actions on SURF kernel.
15 It reduces the complexity to find the next action to finish and,
16 consequently, it's faster than the old Cas01.
17 This is the new default CPU model (Cas01).
18 * Rename the old Cas01 model to Cas01_fullupdate
19 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
20 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
21 * CpuTI (CPU Trace Integration)
22 A new CPU model whose objective is simulate faster when using
23 availability trace files.
24 Instead of using a full featured, over engineered maxmin system for
25 CPU modeling, this model does the pre-integration of traces files
26 to calculate the amount of CPU power available, and so, executes
27 faster than the old CPU models.
28 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
29 * Use LV08 as default network model since it gives better accuracy
30 for small messages and shouldn't change things for big ones.
31 Use --cfg=network_model:CM02 to get the previous behavior.
34 ******************************************
35 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
36 ******************************************
37 * The new CPU model may changes simulations!
38 The point is that events occurring at the exact same timestamp
39 are not scheduled in the same order with the old and new
40 version. This may be enough to completely change the execution
41 of simulations in some cases.
42 * The new network model will change simulations!
43 This new model is more realistic than the previous one, so you
44 should consider redoing your old experiments with this model.
45 Sorry for the inconvenience.
48 * Port of MSG's mailbox on top of SIMIX network
49 The put/get mechanism was greatly simplified thanks to the new SIMIX module.
52 * New SIMIX network module
53 It provides a rendez-vous point (aka mailbox) based send/recv API to perform
54 synchronous communication.
57 * new function SD_daxload(char*) to load a DAX file
58 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
59 * Introduce typed tasks. Specify its kind and cost at creation.
60 At scheduling, just give where it should be placed, and the cost
61 for each involved resource is automatically computed.
62 Existing constructors so far (more to come of course):
63 - SD_task_create_comm_e2e() for end-to-end communication
64 - SD_task_create_comp_seq() for sequential computation
65 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
66 * new function SD_task_dump() for debuging display
67 * new function SD_task_dotty(task,FILE*) writing to file the info
68 about the task in dotty format
69 * SD_task_dependency_exists() can now cope with having one of its
70 arguments NULL. If so, it tests whether the other argument has any
72 * Add getters on list of preceding/following tasks:
73 SD_task_get_parents(task) and SD_task_get_children(task)
74 * Add getters on amount of workstations and list:
75 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
76 * Add getter on task kind: SD_task_get_kind(task)
77 * Update the start_time and finish_time of tasks on completion/failure
78 * Bugfix: Remove task from state swags when destroyed
81 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
84 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
85 dynar with one separate thread per value of the dynar.
88 * GTNetS wrappers should now be usable again (and betterly tested too)
89 * Fix a major regression from 3.2 where the timeout provided to
90 MSG_task_put_with_timeout() was used as absolute time before which
91 the comm should be done.
92 * Start to fix the <cluster> tag.
93 - Internal links should be good now (beside of the loopback, which
94 use the private link instead)
95 - paths to the external world is still rather broken
96 - the <route:multi> tag is just broken. Actually that's brain-dead.
97 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
98 to make it less stupid
99 ** Check your platform with teshsuite/simdag/platforms/flatifier **
100 * Fix a source-level compatibility glitch from 3.2: after defining
101 MSG_USE_DEPRECATED, you can use the old name
102 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
103 * Allow to compile from the SVN with automake 1.11
104 * Fix some problems when using the "start_time" tag in deployment XMLs.
106 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
108 SimGrid (3.3.3) stable; urgency=low
110 The "Need for Speed" release.
112 The timings done to validate the 3.3.2 were faulty.
113 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
115 The problem was a conversion from a manually handled vector to
116 xbt_dynar_t on the critical path.
117 xbt_dynar_foreach calls functions, inducing stack management crap.
119 We inlined these functions and xbt_dynar_foreach is now breath taking.
120 We also inlined xbt_swag_belong on the way.
122 Here are some approximate speedup measurements (on master/slaves
123 simulations lasting between 10s and 20s each):
124 3.3.1 -> 3.3.2: about same performance
125 3.3.2 -> 3.3.3: 40% speedup
126 3.3.1 -> 3.3.3: 40% speedup
127 3.3.1 with inline patch -> 3.3.3: 30% speedup
129 Our reading is that the refactoring which occurred in 3.3.2 made us
130 suffer much more from the xbt_dynar_foreach low performance, but
131 once we solved this, this refactoring proved to be very performance
132 effective. From the 40% speedup, somehow, 10% are due to the
133 inlining and 30% to the refactoring.
135 That's a pitty that gcc cannot inline functions placed in other files
136 alone. We have to choose between:
137 - break the encapsulation (by putting private data structures and
138 accessors in headers files to help gcc)
139 - live with low performance
140 - switch to a decent compiler such as icc (not quite possible).
142 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
144 SimGrid (3.3.2) stable; urgency=low
146 The "Simplicity does not preceed complexity, but follows it" release.
148 The main contributors of this release were (lexical order):
149 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
152 * Extract the routing logic into its own object.
153 (was dupplicated in network.c and workstation_LV07.c;
154 Allows to implement other ways of storing that info)
155 => kill now useless network_card concept
156 - Use dynar to represent routes (instead of void** + int*)
157 - kill link_set (use surf_network_model->resource_set instead)
158 - Add a command-line option to choose the routing schema to use
159 - Add three new models:
160 * Floyd (shortest path computed at initialization)
161 * Dijikstra (shortest path recomputed all the time)
162 * Cached Dijikstra (shortest path computed on need)
163 All these models where contributed by Silas De Munck, and are
164 described in his ICCS09 paper.
166 * Simplify model declaration
167 (less redirections, less function to write when defining a model)
168 - Factorize stuff between models:
171 surf_model_resource_set(model)
172 surf_model_resource_by_name(model, name)
173 - Unify the types of models in s_surf_model_t (using an union)
174 - Embeed fields of common_public directly into s_surf_model_t
175 - Rename model methods:
176 action_free ~> action_unref
177 action_change_state ~> action_state_set
178 action_get_state ~> action_state_get
179 - Change model methods into functions :
180 (model)->common_public->action_use ~> surf_action_ref
182 * Implement a generic resource; use it as ancestor to specific ones
183 (allows to kill duplicated code in models)
184 Drawback: timer command don't need no name nor properties;
185 workstation_CLM03 don't need no properties
186 (but I guess we can live with those few bytes wasted)
188 * Improve the action object model
189 - implement a constructor avoiding dupplicated code about field
190 initialization in generic_action part.
192 * Kill the SDP model: it has an external dependency, is deprecated
193 in flavor of modern lmm models, and didn't compile since a while
196 * Relocation of the context module from XBT to SIMIX.
197 (the context were decoupled from the simix processes, duplicating a lot of code)
198 => a lot of code was factorized
199 - less overhead is introduced during scheduling
200 - simpler API for the context factory
201 - the logic for process creation,destruction and manipulation was simplified
202 * Simplification of the s_smx_process_t data structure.
203 => accesing the simix level data associated to a process is faster now,
204 and the code is a lot more readable.
207 * Implement some more MPI primitives:
208 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
209 -implementation: Bcast: flat or 2-ary tree (default),
212 Allreduce: Reduce then Bcast
213 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
214 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
215 Alltoallv: flat tree, like ompi
217 * Add support for optimized collectives (Bcast is now binomial by default)
218 * Port smpirun and smpicc to OS X
221 * Kill SD_link_get_properties: hard to maintain and makes very little sense
222 Shout out if you used it.
225 * Display the list of still queued messages in SG mode when existing
229 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
230 * Add xbt_graph_node_get_outedges() [Silas De Munck]
231 * Add xbt_str_from_file(FILE*)
232 * Add xbt_dict_get_key achieving a linear reverse search
233 * Remove the context module
235 Portability report of this version:
236 * Main portability targets:
237 - Linux(debian)/x86/context
238 - Linux(debian)/x86/pthreads
239 - Linux(debian)/amd64/context
240 - Linux(debian)/amd64/pthreads
241 On these, we still have the eratic breakages of gras/pmm and
242 amok/saturate_sg reported in previous version. We still think
243 that the tests are the cause of the fault, not the tested code.
245 - Mac OSX Leopard/x86/context
246 Still false negative in tesh autotesting.
247 Smpi still fails, but this time because readlink does not accept -f
248 Everything seems to work properly beside of that.
251 - AIX version 5.3 (only tested contexts this time)
252 Smpi still fails there because mktemp is not installed.
253 Everything seems to work properly beside of that.
255 I managed to compile it for the first time, but several breakages.
256 Won't delay the release for this exotic platform.
258 * Windows: it's still lagging behind. If you want to help, please
261 Timing report of this version:
262 This version seem to be more than 5% faster than 3.3.1 (on linux
263 64bits with contextes). The gain is less than expected, we are
264 investigating this for next release.
266 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
268 SimGrid (3.3.1) stable; urgency=low
271 * Implement a --cfg-help to show existing configuration variables
272 * Build chain do not require doxygen in maintainer mode
275 * fix a bug on struct sizeof computation, which prevented the
276 exchange of arrays of structs in some conditions
277 - added a regression test about this in datadesc_usage
278 * Allow the exchange of 0-long dynamic vectors.
279 - for that, use -1 as indicator of dynamic size instead of 0
280 - This implied to change any size from unsigned long to long,
281 reducing a bit communication abilities, but I guess that with
282 64bits being quite common, this is more than enough.
283 - This also induce a protocol change, thus bumping network protocol
284 version from 0 to 1 (if we have external users, we have to get
285 clean on that point too ;)
286 - added two regression tests about this in datadesc_usage
287 * Be more verbose when propagating local exceptions
288 This helps debugging.
289 * Display the status of simulated processes when receiving SIGINT in
293 * Allow to control the simulation from a trace file.
294 New functions MSG_action_register() and MSG_action_trace_run()
295 The first one allows to associate a function execution to each
296 kind of action while the second one parses a trace file and
297 triggers the corresponding actions within the system.
298 For now, only a toy example is provided in examples/msg/actions
299 * Add an exemple of process migration in examples/msg/migration
300 * Fix a bug in task exchange which broke MSG_task_get_sender()
301 Add a teshsuite regression test for that.
302 [Bug: if MSG_task_get_sender() is called after sender exit,
304 * Fix a bug which prevented suspend/resume to work properly
305 * Display the status of simulated processes when receiving SIGINT
306 This fixes a regression of v3.3. due to the introduction of SIMIX
307 * Bug fixing in failure management:
308 - trace could not start by a failure at time 0
309 - failure during communications were not working
312 * Add SIMIX_process_set_name() to change the name of the current
313 process in the log messages.
314 * Store smx_hosts in a dict since we only retrieve them by name
315 * Move the configuration infrastructure to surf
318 * Move the configuration infrastructure to surf
321 * Massive internal cleanups:
322 - Store internal structures on processes instead of hosts (allows
323 to have more than one process per host, in addition of being more
325 - Cleanup the initialization/finalization process
326 - Kill a whole bunch of unneeded synchronization:
327 processes run in exclusive manner within the simulator
328 - Move queues from global tables to process data fields
330 - now accept -platform and -hostfile arguments
331 - Pass the right rank value to processes according to the hostfile
332 * Compile the examples by default, and use them as regression tests
333 * Implement MPI_Wtime()
334 * Change the reference speed to a command line option
337 * TCP_gamma can now be specified as command line option using
338 --cfg=TCP_gamma:10000000.0
339 * Change the --surf-path cmd line option into --cfg=path:
342 * Also include strbuff from xbt.h public header
343 * xbt_ex_display(): do not free the exception after displaying
344 This allows to do more with the given exception afterward.
345 Users should call xbt_ex_free() themselves.
349 Portability report of this version:
350 * Main portability targets:
351 - Linux(debian)/x86/context
352 - Linux(debian)/x86/pthreads
353 - Linux(debian)/amd64/context
354 - Linux(debian)/amd64/pthreads
355 These targets fail about 1/10 of times on gras/pmm, but we believe
356 that this is because of the test, not because of simgrid.
357 amok/saturate_sg fails even more rarely, and the test may not be
360 - Mac OSX Leopard/x86/context
361 The test suite still spits tons of errors because some obscure
362 force prevents us from removing the temporary directories
363 arguing that they still contain some metadata I've never heard of.
364 Smpi fails because seq is not installed.
365 Everything seems to work properly beside of that.
368 - AIX version 5.3 (both contexts and pthread)
369 Smpi still fails there because mktemp is not installed.
370 XML inclusions seems rosty on AIX.
372 * Windows: it's still lagging behind. If you want to help, please
375 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
377 SimGrid (3.3) stable; urgency=high
381 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
384 * Introduce the SIMIX module: factorize code between MSG and GRAS.
387 Until now, GRAS were using MSG as an interface to SURF. It was
388 quite difficult because both interface have several differences
389 (MSG channels vs GRAS sockets were the most notable point).
391 This also opens the gate to SMPI (which should occur soon) and speed
392 up simulations by to 40% (even if it were not the main goal).
394 **************************************
395 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
396 **************************************
397 The point is that events occuring at the exact same timestamp are
398 not scheduled in the same order with the old and new version. This
399 may be enough to completely change the execution of simulations in
400 some cases. Sorry for the inconvenience.
402 * Cleanup and upgrade the XML format to push further scalability
403 issues (check http://hal.inria.fr/inria-00256883/ for more info)
405 * Improve the testing infrastructure with tesh. Now a very large part of
406 the code is tested not only by being run but also by checking that the
407 output match an expected output [Mt].
409 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
410 is really less memory-demanding, which should allow you to use
411 larger files in SimGrid [AL].
413 * Inform valgrind about our contextes, so that it becomes usable
414 with the default (and more effecient) version of SimGrid
415 [contributed by Sékou Diakite, many thanks]
418 * Introduce a listener thread in charge of receiving incomming
419 messages from the network. It allows to overlap communication and
420 computation but most notably, it removes some stupid deadlocks due
421 to the fact that so far, a process could not send and receive at
422 the same time. This made most non trivial communication schema
424 * Convert the PIDs from long int to int to match the MSG ones (and
426 * New function: gras_agent_spawn() to launch a new process on
427 current host. Only working in simulation for now. [Mt]
428 * New function: gras_os_hostport() returning a constant form (ie,
429 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
432 * Make the backtrace of exceptions more human readable [Mt]
433 * New module: xbt/str [Mt]
434 a ton of string utility functions (split, join, printf to a newly
435 allocated buffer, trim, etc)
436 * New module: xbt/hash [Mt]
437 SHA1 hashing algorithm (more to come if needed)
438 * New module: xbt/synchro [Mt]
439 synchronization tools (mutex and conditions) working the same way
440 in simulation and in real life (mainly useful for GRAS, but not
442 * New module: xbt/queue [Mt]
443 classical producer/consumer synchronization scheme
444 * xbt_dynar_new_sync() creates a synchronized dynar. All access
445 (using the classical functions will get serialized) [Mt]
446 * Make dictionary internal table dynamic. No need to specify its size
447 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
449 * Make sure the log channels are organized as a tree under windows
450 (because of ANSI C compatibility issue, any channel were child of
454 * Cleaned many thing in surf and fixed a few bugs [AL].
455 * Add a nice command line configuration mechanism to compose models [AL].
456 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
457 the previous one (KCCFLN05). It relies on something that looks like
458 a max-min sharing mechanism but cannot be written as such. A new solver
459 was thus designed [AL].
460 * Add a new solver to lmm. Based on Lagrange optimization and
461 gradient-based descent, it enables to efficiently maximise systems s.a
463 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
465 This solver enables to propose two new network models for TCP Reno and
466 TCP Vegas based on Low's work. These models still need to be fully
467 tested though [Pedro Velho].
470 * Bug fix in SD_simulate. Now the time bound given as argument is
472 * Use the new parallel task model (ptask_L07) as default.
473 * Use the SURF command line configuration mechanism.
474 * 0-size tasks (for synchronization) should now work.
476 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
478 SimGrid (3.2) stable; urgency=high
482 We still experience issues on this platform, but we believe that at
485 GRAS API BREAKAGE (for simplification purpose, sorry):
486 * the gras_msgtype_by_name is not used anymore. Instead of
487 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
488 you can write (and must)
489 gras_msg_send(toserver, "request", &request);
490 - If you still want to pass a gras_msgtype_t to the function (to cache
491 the type and avoid the lookup time), use the gras_msg_send_() variant.
492 - Impacted functions:
493 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
494 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
495 * The callbacks are now expected to return 0 when everything went well
496 (just like the main() function)
498 GRAS new features and improvements:
499 * New module mecanism where user code can use per process globals [Mt]
500 This is similar to gras_userdata_*() functions, but for libraries. It
501 factorize some code developped over and over in the examples and AMOK.
502 It has still to be documented and used (only amok/peermanagement is
504 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
505 loss when they were small enough to fit into the buffer and sent quickly
506 enough so that they can all get received in one shoot.
507 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
508 if not found. Use the *_or_null() variant for the old semantic.
509 * In gras_msg_handle, do not discard messages without callback.
510 They are probably messages to be explicitly awaited later (ie, proofs of
511 mis-synchronization in userland since they are sent before being awaited)
513 * gras_socket_meas_send/recv: semantic changed!
514 The numerical arguments used to be (1) the total amount of data to send
515 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
516 messages. This was need for the fool willing to send more than MAXINT
517 bytes on quite fat pipes.
520 * Do really rename the hostmanagement module to peermanagement. [Mt]
521 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
522 but this is rather new and this was documented in the module
523 documentation (poor excuses, I admit)
524 * Bandwidth measurement semantic changed! This follows the changes to
525 gras_socket_meas_send/recv explained above.
528 * A sequential mode has been added to the workstations. When a workstation
529 is in sequential mode, it can execute only one task, and the other tasks
530 are waiting in a FIFO. [Christophe Thiery]
533 * The KCCFLN05 workstation model now handles parallel tasks. It is the
534 model for SIMDAG. [Christophe Thiery]
535 * Bug fix in the maxmin solver: Some values were close to 0 instead of
536 equal to 0, which caused some bad behaviors in
537 saturated_constraint_set_update. I now use a threshold mechanism like in
541 * When running manually src/testall, you select specific units [Mt]
542 testall is the result of our cunit mecanism, and should replace all
543 the scripty thingy around since bash don't run easily on billware.
545 * A mallocator system has been added. [Christophe Thiery]
546 Mallocators allow you to recycle your unused objects instead of freeing them
547 and allocating new ones.
549 Documentation update:
550 * FAQ reworking + New FAQs:
551 - "Valgrind spits tons of errors!" [Mt]
552 - "How to repport bugs" [Mt]
553 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
554 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
555 - Communication time measurement within MSG [AL]
556 - I experience weird communication times when I change the latency [AL]
559 - an introduction to the framework and to the used communication model
560 - an initiatic tour introducing the most proheminent features:
562 . Lesson 0: Installing GRAS
563 . Lesson 1: Setting up your own project
564 o Part 2: Message passing
565 . Lesson 2: Exchanging simple messages
566 . Lesson 3: Passing arguments to the processes (in SG)
567 . Lesson 4: Attaching callbacks to messages
568 . Lesson 5: Using globals in processes
569 . Lesson 6: Logging informations properly
570 . Lesson 7: Using internal timers
571 . Lesson 8: Handling errors through exceptions
572 . Lesson 9: Exchanging simple data
573 . Lesson 10: Remote Procedure Calling (RPC)
574 . Lesson 11: Explicitely waiting for messages
575 . Recapping of message passing features in GRAS
576 - A HOWTO section containing:
577 o HOWTO design a GRAS application
578 More are due, of course. They will come latter. In the meanwhile, you can
579 check the examples which are still here.
581 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
583 SimGrid (3.1) stable; urgency=high
587 There was a stack corruption somewhere, visible only when optimizing
588 with these versions. [Vince]
591 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
592 module that enabled to play with Directed Acyclic Graphs. It is built
593 directly on top of SURF and provides an API rather close to the old
594 SG. Some old codes using SG are currently under rewrite to check that
595 all needful functions are provided. [Christophe Thiery]
598 * Complete rewrite of the KCCFLN05 workstation model. It is now an
599 extension of the classical CLM03 model that gracefully handles
600 failures. This is now the default model for MSG and GRAS. It doesn't
601 handle parallel tasks yet though. [AL]
602 * Bug fix: Weights were not correctly set in the network part.
603 WARNING: This may have resulted in incorrect results with simulations
604 where there are more than one flow on a given link. [AL]
607 * After a (long ?) discussion on simgrid-devel, we have decided that the
608 convention we had on units was stupid. That is why it has been decided
609 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
610 WARNING : This means that all previous platform files will not work as
611 such with this version! A warning is issued to ask users to update
613 A conversion script can be found in the contrib module of the CVS, under
614 the name contrib/platform_generation/surfxml_update.pl [MQ]
617 * Bug fix: Processes were started in reverse order, wrt deployment file.
618 WARNING: if your code relies on this bug, please fix it. [AL]
619 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
620 being executed on two different locations. [AL]
621 * Bug fix: Failures are now better supported thanks to Derrick's tests
622 (there was many failure situations I hadn't thought of and that weren't
623 correctly handled). [AL]
624 * New function: MSG_host_is_avail indicates you whether a given m_host_t
628 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
629 Exception occurring on server-side are propagated back to client (!).
631 API CHANGE: the callback changed their prototype. Change:
632 int my_handler(gras_socket_t expeditor, void *payload_data) {
634 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
635 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
637 * New! function: gras_msg_handleall to deal with all messages arriving
638 within a given period.
639 * New! function: gras_socket_server_range to get a server socket in a
640 range of port numbers (ease to avoid port number conflicts) [MQ]
641 * New! gras processes display their backtrace when they get a SIGUSR1
642 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
643 Sweet to debug RL processes [MQ]
647 - Do not force experiment sizes to be expressed in kb, or it becomes
648 impossible to measure the latency this way (needs one byte-long tests)
649 WARNING: this changes the amok_bw_* function semantic. [MQ]
650 - Implements the link saturation stuff. [MQ]
651 * Peer management module:
652 New! module factorizing code that we wrote over and over [MQ].
655 * New module: cunit (my jUnit implementation in ansi C) [MQ]
656 - Test units are placed directly into the library code, they get extracted
657 automatically and placed into the src/testall binary.
658 - Convert most of the XBT tests to this system.
659 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
660 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
661 live in the same C code. This required to change a little bit the API
662 of surfxml parsing but shouldn't be an issue for end-users. [AL]
663 * New module: sparse graph structure with basic algorithms (this is work
664 in progress and the API is not considered to be frozen yet). [AL]
665 * Display more information on backtraces: source line & function names are
666 now displayed just like valgrind does (rely on addr2line tool) [MQ]
667 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
668 * Reworked a little bit some #include statements to load only required
669 headers. Some user code that relied on SimGrid to include stdlib or
670 stdio may need to include it by themselves. [AL]
671 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
673 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
674 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
675 but I guess that almost nobody used those parts. [MQ]
677 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
679 SimGrid (3.0.1) stable; urgency=low
682 * Unfortunately, I had missed 5 misnamed functions:
683 xbt_fifo_item_t xbt_fifo_newitem(void);
684 void xbt_fifo_freeitem(xbt_fifo_item_t);
685 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
686 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
687 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
688 They're now deprecated. Please use their new versions:
689 xbt_fifo_item_t xbt_fifo_new_item(void);
690 void xbt_fifo_free_item(xbt_fifo_item_t);
691 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
692 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
693 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
695 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
696 * Documentation: xbt_log module unmercifully reworked [MQ]
697 * Bugfix: there was a problem with the ending of contexts with
698 the pthread backend. It caused some weird deadlock or behavior
699 depending on the pthread implementation. [AL]
700 * Bugfix: get the exceptions raised in the simulator repport where
701 and why they come from when they are not catched in time [AL, MQ]
704 * Bugfix: Do repport the error when two non-connected hosts try to
705 exchange data (Thanks to Flavien for stumbling into this one) [AL]
708 * Add additionnal checkings on communications. Assert that two
709 communicating hosts are connected by a set of links... [AL]
712 * Add additionnal checkings on channel values in communication [AL]
713 * New: MSG_task_get_source to see on which host a task was generated [HC]
714 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
715 the number of tasks waiting to be received on channel and sent
717 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
718 waits for the first task coming from a given host.. [AL]
720 GRAS new functionnalities: [MQ]
721 * Enhance the parsing macro to allow the size of multidimentional objects
722 to be given thru annotations.
723 * New example (and documentation): Matrix Multiplication a la RPC
724 (as when I was young!) and fix a bunch of bugs found on the way.
726 GRAS performance improvements: [MQ]
728 * Reduce the amount of cbps creation/destruction by making it static to
729 datadesc_send/recv() and using a (newly created) cbps_reset (based on
732 * Change libdata to a set so that we can search for stuff by ID (and thus
733 reduce the insane amount of dict lookups)
736 * Actually implement gras_datadesc_copy() so that we don't have to mimick
737 RL communication on top of SG since it's so uneffective.
738 It may also be used for inter-thread communication in RL, one day.
739 * Use gras_datadesc_copy() to exchange messages on top of SG
741 - improve message exchange performance on top of SG
742 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
743 * Don't exchange on the network the size of the used part of buffer,
744 instead, specify the possible buffer size to read().
746 - reduces the amount of read/write calls (one pair per exchange)
747 - reduces the amount of exchanged data (the size)
748 - allows to retrieve all arrived data on receiver side, if we don't need
749 it right now (subsequent read will peek the buffer)
750 - allows the receiver to proceed with the begining of the stream before
751 everything is arrived
752 - make it possible to build an iov transport (using readv/writev)
754 - take care of the data with non-stable storage (like stacked data),
756 * If possible, TCP send uses vector I/O (when writev() is here)
757 - Don't use it for receive since we send data sizes and data on the
758 same stream, so we wouldn't be able to chain large amount of chunks
759 before having to flush the stuff to read the size.
760 * Rework the transport plugin mecanism to simplify it and reduce the
761 amount of pointer dereferencement when searching for the right function
764 * I guess that now, we do almost as few system calls as possible while
765 doing as few data copy as possible.
767 To improve it further, we could try to send all the sizes first and then
768 all the data (to use iov on receiving size), but it's only a partial
769 solution: when you have 2 dimensional data, the sizes of the second
770 dimension is data of the first dimension, so you need 3 streams.
772 I'm not sure the potential performance gains justify the coding burden.
774 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
776 SimGrid (3.00) stable; urgency=high
779 * New! Give the possibility to hijack the surf parser and thus bypass
780 MSG_create_environment and MSG_launch_application. Have a look at
781 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
783 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
785 SimGrid (2.96) unstable; urgency=low
790 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
791 This deprecates the xbt_error_t mecanisms.
792 It modifies (simplifies) all XBT and GRAS API.
793 MSG API keeps unchanged (exceptions raised by XBT are catched from
794 within MSG and masked with existing error handling facilities)
797 * New! Add a FATPIPE model. [AL]
798 * New! Add a parallel task model. [AL]
799 * New! Add automatically a loopback interface (in the default
800 network model) if none was precised.
803 * Bugfix: MSG_process_resume now works with the current running process.
805 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
806 * Modification of MSG_task_get_compute_duration. Once a task has been
807 processed, the value returned by this function is now equal to 0. [AL]
808 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
809 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
810 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
811 of a m_task. For now, MSG_task_cancel only works with computation
813 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
814 of the processor (in Mflop/s) regardless of the current load on the
816 * API Change: use proper naming convention for MSG_getClock and
817 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
819 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
820 This function changes the priority of a computation task. This priority
821 doesn't affect the transfer rate. A priority of 2 will make a task
822 receive two times more cpu power than the other ones. This function
823 has been added to suit the needs of Nguyen The Loc and hasn't been that
824 much tested yet. So if it fails, please report it and send me your code.
826 * API Change: removed all functions and types that were marked "deprecated"
827 since many months. Renamed MSG_global_init_args to MSG_global_init.
829 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
831 SimGrid (2.95) unstable; urgency=low
834 * Steal some nice code to GNU pth to fix context detection and usage [AL]
835 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
836 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
839 * Bugfix: Allow absolute paths for platform description files [MQ]
840 * Bugfix: do free the variables after use. Leads to drastic performance
842 * Implement max_duration (ie, timeouts) on resources [AL]
845 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
847 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
848 the needed support (timeouts) [AL]
851 * Implement measurement sockets. You can now get the bandwidth between two
852 hosts thanks to AMOK (see below). [MQ]
853 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
854 dynar over the network (yeah) [MQ]
855 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
856 * simple/static token-ring example. [Alexandre Colucci and MQ]
857 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
861 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
862 type parsing. "short" and "long" modifiers were also ignored; other
863 modifier (such as reference level) are still ignored. [MQ]
864 * Embeed the buffer size within the buffer itself on SG. [MQ]
865 That way, send() are atomic and cannot get intermixed anymore (at least
866 the ones which are less than 100k; bigger messages still have the issue)
867 * Array size pushed by the field, not by the field type (or each
868 and every long int will push stuff to the cbps) [MQ]
869 * use select() to sleep since it allows to portably sleep less than one
872 GRAS (minor cleanups)
873 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
876 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
877 * type category 'ignored' killed as it was never used and were difficult
879 * whether a type can cycle or not is now a flag, leaving room for more
880 flags (as "ignored", if we feel the need one day ;)
881 * Rename raw sockets to measurement sockets since "raw" has another
882 meaning in networking community.
885 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
886 and offers features not belonging to GRAS but that most applications
887 need. One day, it may be a set of plugins loadable at runtime.
888 * New module: bandwidth
889 bandwidth measurement between arbitrary nodes running this module. [MQ]
891 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
893 SimGrid (2.94) unstable; urgency=low
895 The first beta release of SimGrid 3 !
899 * Update the main page and the FAQ. Adding references to gforge.
902 * Add a gras_os_getpid function.
905 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
906 * Extend the logs so that they also print PID, hostname, date, ... if
908 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
909 and kill the old version which were in testsuite/
910 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
914 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
915 for users. Instead, each programming environment (GRAS, MSG,...) use it
916 when needed to provide such a feature to users.
917 Don't shortcut the mecanism or you will also shortcut the virtualization
918 you need on the simulator.
922 * Cleanups in configury with regard to compile optimization/warning flags.
923 Also add -fno-loop-optimize to any powerpc since it's the optimization
924 killing gcc (< 3.4.0).
925 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
926 needed by MSG examples complications
927 * Borrow configury beautifications from PHP
930 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
931 warning (thanks loris for stumbling into this one).
932 * Bugfix: stop loading private headers (gras_config.h) from the public
936 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
937 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
938 RL would imply a DNS resolver, which is *hard* to do in a portable way
939 (and therefore delayed).
940 * Implement a real timer mecanism and use it in timing macros. This allows
941 to avoid rounding errors and get a 0.000005 sec precision in timing
942 macros. While I was at it, various cleanups:
943 - allow to declare more than one timed section per file (fix a stupid bug)
944 - move some private declaration to the right place
945 - merge conditional execution and timing macros into emulation module
946 - document the module
947 - make sure the module cleanups its mess on gras_exit
948 * Documentation improvements:
949 - (new) how to compile applications using GRAS
950 - (new) emulation support (timing macros)
952 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
954 SimGrid (2.93) unstable; urgency=low
956 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
959 - Use Paje properly where used. Still to be sanitized properly.
960 - Portability fix: Add an implementation of the contexts using pthread
964 - Add xbt_procname(): returns the name of the current process.
965 Use it to show the current process's name in all logging.
967 - fix detection of older flex version and the reaction, since we do
968 depend on modern ones (we use lex_destroy)
969 - Better separation of SG and RL in the libs: remove all simulation code
970 from libgras. As a result, this lib is now only 200k when stripped.
971 Some of the xbt modules may also be duplicated (two sets and such) and
972 should be cleaned/killed before SG3.
973 - Insist on using xlC on AIX because of weird problems involving gcc there.
974 - Cleanup the make remote stuff. This is now done by scripts
975 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
976 mainly for our private use, but we're working on changing them to user
979 - Bugfix: flush the socket on close only if there is some *output*.
980 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
982 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
985 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
987 SimGrid (2.92) unstable; urgency=low
989 Alpha 3 on the path to SimGrid 3
993 - New! First try of benchmarking macros.
994 - New! First try so that gras_stub_generator generate deployment and
995 remote compilation helpers.
997 - Bugfix: Initialization fix in msg_test.
1001 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
1003 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
1005 - API Change: gras_os_sleep to take the amount of seconds as a double.
1006 Accepting an int was error prone since it was the only location where
1007 seconds were coded as such. It leaded to damn rounding errors.
1008 - Bugfix: Hard to belive that timers ever worked before this.
1010 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
1012 SimGrid (2.91) unstable; urgency=low
1014 Alpha 2 on the path to SimGrid 3
1018 - Bug fix in the lmm_solver.
1020 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
1021 through the function MSG_paje_output.
1022 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
1023 - It is possible to bound the rate of a communication in MSG with
1024 MSG_task_put_bounded() (was already in the previous version but I had forgotten
1025 to write it in the changelog).
1026 - Bug fix to let GRAS run on top of MSG until we move it directly on top
1031 - Various cleanups to the autotools stuff
1032 - Begin to move Gras examples to examples/gras/
1033 - Let make distcheck work again (yeah!)
1035 - documentation overhauled using doxygen.
1036 gtk-doc-tools is dead in SimGrid now.
1037 - Automatically extract all existing logging categories, and add the list
1038 to the documentation (long standing one, to say the less)
1040 - Cleanup the known architecture table. Reorder the entries to group what
1041 should be, and use a more consistent naming scheme.
1042 (some of the test dataset are still to be regenerated)
1043 - New! Allow library to register globals on each process just as userdata
1045 This is implemented using a xbt_dict and not a xbt_set, so we loose the
1046 lookup time (for now).
1047 Use it in msg and trp.
1048 This cleans a lot the internals and helps enforcing privacy of the
1049 headers between the gras components.
1050 - New! Add a timer mechanism, not unlike cron(8) and at(1).
1051 - Bugfix: gras_os_time was delirious in RL.
1052 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
1054 - Reenable GRAS now that it works.
1056 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
1058 SimGrid (2.90) unstable; urgency=low
1060 Alpha 1 on the path to SimGrid 3
1062 * It is a long time since the last release of SimGrid. I'm sorry about
1063 that but as I had told you, I was rewriting a lot of things. I apologize
1064 to those who had been reporting bugs to me and that I had not answered.
1065 If your bug is still in the new version, please tell me. Here is a
1066 summary of the main changes.
1068 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
1069 lead by Martin Quinson. As a consequence SimGrid gains a lot in
1070 portability, speed, and a lot more but you'll figure it out later.
1071 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
1072 I wanted to release the new MSG as soon as possible and I have
1073 broken GRAS, which is the reason why, for now, only MSG is fully
1074 functional. A laconic description of these projects is available
1075 in the documentation.
1077 * REVOLUTION 2: I have removed SG and I am now using a new simulation
1078 kernel optimized for our needs (called SURF but only the developers
1079 should use it). Hence, MSG is now roughly 30 times faster and I think
1080 that by rewriting a little bit MSG, I could event speed it up a little
1081 bit more. Beside the gain in speed, it is also much easier to encode a
1082 new platform model with SURF than it was with SG. More to come...
1084 * REVOLUTION 3: I have tried to change a little as possible the API of
1085 MSG but a few things really had to disappear. The main differences
1086 with the previous version are :
1087 1) no more m_links_t and the corresponding functions. Platforms are
1088 directly read from a XML description and cannot be hard-coded
1089 anymore. The same format is used for application deployment
1090 description. The new format is described in the documentation.
1091 Have a look in tools/platform_generation. There is a tiny script
1092 that converts from the old platform format to the new one. Concerning
1093 the application deployment format, parsing the old one is tricky.
1094 I think most of you should however be able to convert your files. If
1095 it is really an issue, I can write a C code that does the conversion.
1097 2) the toolbox tbx does not exist anymore. We now have a library
1098 with much more data-structures but without the hash-tables (we have
1099 dictionaries that are much faster).
1101 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
1103 *****************************************************************************
1104 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
1105 * don't feel like converting the oldies. (Mt) *
1106 *****************************************************************************
1109 Version 2.90: "the long awaited one"
1110 - Finished rewriting and debugging MSG. Rewrote the documentation.
1111 - disable GRAS for now since it needs to be ported to the newest SG
1114 - Finish the port to windows (using mingw32 for cross-compile)
1117 - Main loop and datastructures of SURF. A cpu resource object is
1118 functional. Surf can thus be used to create cpu's with variable
1119 performance on which you can execute some actions.
1121 2004-11-15 Martin Quinson
1122 - Port to ARM. Simply added the alignment and size descriptions. Should
1123 work, but the ARM machines are so slow that I didn't had the opportunity
1124 to 'make check' over there yet.
1126 2004-11-15 Arnaud Legrand
1127 - Trace manager now written. It uses a heap structure and is therefore
1128 expected to be efficient. It may however be speeded up (particularly
1129 when many events occur at the same date) by using red and black
1130 trees. One day maybe...
1131 - Max-min linear system solver written. It uses a sparse matrix
1132 structure taking advantage of its expected use. Most operations are
1133 O(1) and free/calloc are called as few as possible. The computation of
1134 the minimum could however be improved by using a red and black tree
1137 2004-11-03 Arnaud Legrand
1138 - Rename every gras_* function that was in xbt/ to its xbt_
1140 - Add a heap and a doubly-linked list to xbt
1141 - Added a dichotomy to the dictionaries. make check works as well before
1142 so I assume that the patch is correct. I do not know however if things
1143 run effectively faster than before now. :)
1145 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
1146 SimGrid, and the version number is bumped to 2.x
1148 2004-10-29 Martin Quinson
1149 - Introduction of the remote errors.
1150 They are the result of a RMI/RPC on the remote machine.
1151 ErrCodes being scalar values, you can't get the host on which those
1152 errors did happen. Extending the error mechanism as in Gnome is possible.
1153 No idea yet whether it is a good idea.
1155 2004-10-28 Martin Quinson
1156 - Interface revolution: the Starred Structure Eradication.
1157 I used to do typedef struct {} toto_t; and then handle *toto_t.
1158 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
1159 - ???_t is a valid type (builded with typedef)
1160 - s_toto_t is a structure (access to fields with .)
1161 - s_toto is a structure needing 'struct' keyword to be used
1162 - e_toto_t is an enum
1163 - toto_t is an 'object' (struct*)
1165 typedef struct s_toto {} s_toto_t, *toto_t;
1166 typedef enum {} e_toto_t;
1167 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
1168 s_toto_t) is private.
1170 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
1171 so that it can set the variable to NULL. It was so for dicts and sets,
1172 it changed for dynars.
1174 - Fix a bunch of memleaks in dict_remove
1175 - Fix a bug in sg/server_socket opening: it failed all the time.
1177 2004-10-07 Martin Quinson
1178 - Speed up dynar lookup operation a bit.
1180 gras_dynar_get is dead.
1182 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
1183 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
1184 (which gives you the address of the stored data).
1186 gras_dynar_get_as is an helpful macro which allows you to retrieve a
1187 copy of the data using an affectation to do the job and not a memcpy.
1189 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
1190 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
1192 It does not really speedup the dynar test because they are
1193 setting elements all the time (and look them seldom). But the dict does
1194 far more lookup than setting.
1196 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
1198 2004-10-05 Martin Quinson
1199 - Allow to (en/dis)able the cycle detection at run time.
1201 Whether we should check for cycle or not is now a property of each
1202 datatype. When you think there may be some cycle, use datadesc_cycle_set.
1203 datadesc_cycle_unset allow to remove this property when previously set.
1205 Note that the cycle detection is off by default since it impacts the
1206 performance. Watch the data you feed GRAS with ;)
1208 This property is hereditary. Any element embedded in a structure having it
1209 set have it set for the time of this data exchange.
1211 You should set it both on sender and receiver side. If you don't set it on
1212 sender side, it will enter an endless loop. If you forget on receiver
1213 side, the cycles won't be recreated after communication.
1215 - Header reorganization.
1216 Kill gras_private.h, each submodule must load the headers it needs.
1218 2004-10-04 Martin Quinson
1219 - Interface revolution: do not try to survive to malloc failure.
1221 Now, gras_malloc and friends call gras_abort() on failure.
1222 As a conclusion, malloc_error is not a valid error anymore, and all
1223 functions for which it was the only gras_error_t return value are
1224 changed. They now return void, or there result directly.
1225 This simplify the API a lot.
1227 2004-09-29 Martin Quinson
1228 - Re-enable raw sockets.
1229 Created by gras_socket_{client,server}_ext;
1230 Used with gras_raw_{send,recv}
1233 It should allow to kill the last bits of gras first version soon.
1235 This is not completely satisfactory yet (duplicate code with
1236 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
1239 - Simplify transport plugin (internal) interface by not passing any
1240 argument to _server and _client, but embedding them in the socket
1243 2004-09-28 Martin Quinson
1244 - Finish the port to AIX.
1245 autoconf was my problem (segfault within the malloc replacement
1246 function. No idea why)
1248 2004-09-16 Martin Quinson
1249 - Fix some size_t madness on 64bit architectures.
1251 2004-09-08 Martin Quinson
1252 - Reduce the number of system headers loaded, overload some more system
1253 calls (such as malloc to cast the result of the system one, and work
1255 - Fix and reintroduce the config support
1257 2004-09-07 Martin Quinson
1258 - Source code reorganization to allow Arnaud to surf all over there.
1259 - Allow to document the logging categories.
1260 - Remove all uppercase from logging categories and useless cleanup in names.
1262 2004-08-18 Martin Quinson
1263 Version 0.6.2 (protocol not changed; API changed)
1264 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
1265 gras_error_t), and NULL when not found. Functions expecting a msgtype
1266 as argument (msg_wait; msg_send) deal with NULL argument by providing a
1267 hopefully usefull message.
1268 - Portability to prehistoric sparcs again
1270 2004-08-17 Martin Quinson
1271 Version 0.6.1 (protocol not changed; ABI not changed)
1272 - prealloc some buffers to speed things up
1274 2004-08-11 Martin Quinson
1275 Version 0.6 (protocol not changed; ABI expended)
1276 - The parsing macro can deal with the references, provided that you add
1277 the relevant annotations (using GRAS_ANNOTE(size,field_name))
1279 2004-08-09 Martin Quinson
1280 Version 0.5 (protocol not changed; ABI changed)
1281 - Allow to off turn the cycle detection code in data exchange at
1282 compilation time. It should be at run time, but I'm short of time (and
1283 the config stuff is still broken). That way, we keep dict out of the
1284 critical path, which is good because the performance is poor:
1285 - search not dichotomial yet
1286 - dynar give no way to access their content and memcpy everytime
1287 - In composed data description (struct, ref and so on), stop foolness of
1288 keeping the subtype's ID, but store the type itself. This keeps sets out
1289 of the critical path, which is good since they rely on dynar and
1290 dictionnaries. The only loose of that is that we cannot detect the
1291 redeclaration of a structure/union with another content (but I'm not sure
1292 the code detected well this error before anyway). We still can detect
1293 the redefinition discrepancy for the other types.
1294 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
1295 it breaks the code because of type-punning used all over the place).
1296 This breaks on all non-gcc architectures (for now).
1298 All those changes (plus the buffer of last time) allow me to gain 2 order
1299 of magnitude on cruel tests consisting of 800000 array of integers on two
1300 level of a hierarchical structure (200 secondes -> 4 secondes)
1303 - the selector of reference must now return the type it points to, not
1304 the ID of this type.
1306 2004-08-06 Martin Quinson
1307 Version 0.4 (protocol changed; ABI not changed)
1308 - Allow to pass --gras-log argument to processes in simulation mode. Really.
1309 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
1310 - Implement a buffer transport, and use it by default (it relies on tcp in
1311 real life and on sg in simulation).
1312 That's a bit hackish since I had a new field to the structure to store
1313 its data without interfering with the subtype ones. Inheritance
1314 is tricky in C. And that's a kind of reverse inheritance with one class
1315 derivating two classes. Or maybe a game with java interfaces. Anyway,
1316 that's damn hard in C (at least).
1317 Moreover, I got tired while trying to ensure plugin separation and
1318 genericity in SG mode. MSG wants me to do weird things, so let's go for
1319 cruel hacks (temporarily of course ;).
1320 See comment in transport_private.h:71
1321 - do not include all the _interface headers in private but in the files
1322 which really need them (to cut the compilation time when they are
1325 2004-07-26 Martin Quinson
1326 Version 0.3 (protocol not changed; ABI changed)
1327 - Major overhault of the datadesc interface to simplify it:
1328 - shorted the function names:
1329 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
1330 - add a trivial way to push/pop integers into the cbps without malloc.
1331 This allows to make really generic sub_type description, which simply
1332 pop their size of the stack.
1333 - add a function gras_datadesc_ref_pop_arr() which does what users want
1334 most of the time: Declare a dynamic array (which pops its size of the
1335 stack) and declare a reference to it. Poor name, but anyway.
1336 - kill the post-send callback, add a post-receive one
1338 2004-07-23 Martin Quinson
1339 Version 0.2 (protocol changed; ABI changed)
1340 - add some testing for cpbs in the test cases, and fix some more bugs.
1341 This invalidate again the little64 data file, since I cannot regenerate
1343 - remove an awfull optimization in the logging stuff, allowing me to:
1344 - understand it again
1345 - learn gcc how to check that the argument match the provided format
1346 - fix all errors revealed by gcc after that
1347 - internal keys of dict are not \0 terminated. Deal with it properly in
1348 loggings instead of segfaulting when the user want to see the logs :-/
1350 2004-07-22 Martin Quinson
1351 - Fix some stupid bug preventing cbps (callback postit) from working
1353 2004-07-21 Martin Quinson
1354 - Some documentation cleanups
1355 - remove the useless last argument of msgtype_declare
1356 - rename the Virtu functions to fit into the 'os' namespace
1357 - move headers src/include -> src/include/gras/ and stop fooling with
1358 gras -> . symbolic link
1359 - make distcheck is now successful
1361 2004-07-19 Martin Quinson
1363 - Build shared library also
1364 - Install html doc to the right location
1365 - stop removing maintainer files in make clean
1366 - build tests only on make check
1368 2004-07-13 Martin Quinson
1370 - No major issue in previous version => change versionning schema
1371 - Re-enable little64 convertion test now that Abdou kindly regenerated the
1372 corresponding dataset.
1374 2004-07-11 Martin Quinson
1376 - Get it working with any kind of structure (we can compute the padding
1377 bytes remotely for all the architectures I have access to)
1378 - Implement the structure parsing macro (still not quite robust/complete)
1379 - Improvement to the remote testing toysuite
1381 2004-07-10 Martin Quinson
1382 [autoconf mechanism]
1383 - get ride of a bunch of deprecated macros
1384 - actually run the test for two-compliment, not only compile it :-/
1385 - test whether the structures get packed (and bail out if yes. Damn.
1386 Alignment is a serious matter)
1387 - test whether the structures get compacted (but respecting the alignment
1388 constraints of each types)
1389 - test whether the array fields of structures can straddle alignment boundaries
1391 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
1392 (took me 2 hours to find that bug, looking at the wrong place)
1393 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
1394 before sending/receiving and are used to compute the offsets of fields
1395 - Given that padding size depend even on compiler options, keep track of
1396 alignment and aligned_size only for the current architecture. Not a big
1397 deal since we send structure fields one after the other (seems
1399 - Add the datastructure used for IEEE paper by the PBIO guys to the test
1400 program, let it work on linux/gcc/little32. portability todo.
1402 2004-07-08 Martin Quinson
1403 - import and improve remote compilation support from FAST
1404 - make sure make check works on half a dozen of machines out there
1406 2004-07-07 Martin Quinson
1407 Let's say it's version 0.0.3 ;)
1408 - Implement conversions (yuhu!)
1409 - Let it work on solaris (beside conversion, of course)
1410 - Stupid me, using rand() to generate the conversion datatests in not wise.
1412 2004-07-06 Martin Quinson
1413 - Let make dist work, since I'm gonna need it to compile on remote hosts
1414 - Let Tests/datadesc_usage write the architecture on which the file was
1415 generated as first byte.
1416 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
1417 architecture descriptions.
1418 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
1419 on those architectures.
1420 - Optimization: send/recv array of scalar in one shoot
1422 2004-07-05 Martin Quinson
1423 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
1425 - Plug a whole bunch of memleaks
1426 - each process now have to call gras_{init,exit}. One day, their log
1427 settings will be separated
1428 - Continue the code factorisation between SG, RL and common in Transport.
1430 2004-07-04 Martin Quinson
1432 - Redistribution between SG and RL.
1433 We wanna have to accept in SG, so move accepted related parts of RL in
1434 the common part. (more precisely, the dynar of all known sockets is no
1435 more a static in transport.c, but part of the process_data)
1437 [gras_stub_generator]
1438 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
1440 2004-07-03 Martin Quinson
1441 - Create a new log channel tbx containing dict, set, log, dynar (to shut
1442 them all up in one shot)
1444 - Fix the ugly case of reference to dynamic array.
1445 - New (semi-public) function gras_datadesc_size to allow the messaging
1446 layer to malloc the needed space for the buffer.
1448 - gras_socket_close now expect the socket to close (and not its address to
1449 put NULL in it after it). This is because the socket passed to handlers
1450 is one of their argument (=> not writable).
1452 - propagate the interface cleanup from last week in datadesc, ie remove a
1453 superfluous level of indirection. User pass adress of variable
1454 containing data (both when sending and receiving), and not of a variable
1455 being a pointer to the data. Let's say that I like it better ;)
1456 The price for that is constructs like "int msg=*(int*)payload" in
1457 handlers, but it's a fine price, IMHO.
1459 - Let it work in RL (yuhu)
1461 2004-06-21 Martin Quinson
1463 - porting SG plugin and SG select to new standards (works almost).
1464 - plug memleaks and fix bugs around.
1467 - cleanup the prototype of data recv and force users to specify when they
1468 want to handle references to objects. Test case working even for cycles.
1469 - plug memleaks. Valgrind is perfectly ok with this.
1471 2004-06-12 Martin Quinson
1473 - cleanup the separation between plugin and main code in plugin creation
1475 2004-06-11 Martin Quinson
1477 - Reput hook for raw sockets, needed for BW experiments
1478 - kill a few lines of dead code
1479 [Data description] Interface cleanup
1480 - gras_datadesc_by_name returns the searched type or NULL.
1481 That way, no variable is needed to use a type desc once, which makes
1483 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
1484 two parameters were strings (field name, type name), leading to
1486 [Dicos] Interface cleanup
1487 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
1488 This is consistant with the dynar API.
1490 2004-04-21 Martin Quinson
1492 - Porting to new standards.
1494 - interface cleanup.
1495 There is no bag anymore, no need to take extra provision to mask the
1496 pointers behind "ID".
1497 Better splitup of functions between files create/exchange/convert.
1498 This is still a bit artificial since convert and receive are so
1499 interleaved, but anyway.
1501 - add a queued message list to procdata (the ones not matching criteria
1503 - factorize some more code between SG and RL wrt procdata
1505 - use gras_exit in example to track memleaks
1506 - get rid of gs_example now that GS is properly integrated into gras
1507 - update run_test to integrate the lastest tests (datadesc)
1509 - rename WARNINGn macros to WARNn since it prooved error-prone
1511 2004-04-19 Martin Quinson
1513 - register init/exit functions within gras module mechanism
1514 - send/receive function.
1515 Convertion is not implemented, but short-cutted if not needed.
1516 struct/array elements are sent one by one (instead of block-wise), but
1517 nobody really cares (yet). Get a prototype before optimizing.
1518 - tests (using a file socket) for DD send/receive on:
1519 - base types: int, float
1520 - array: fixed size, string (ie ref to dynamic string)
1521 - structure: homogeneous, heterogeneous
1522 - chained list, graph with cycle
1523 Believe it or not, valgrind is not too unhappy with the results. The
1524 cycle happily segfaults, but the others are ok. And I'm sick of pointers
1528 - Bugfix when using a filename explicitely (instead of '-')
1530 2004-04-09 Martin Quinson
1532 - factorize more code between RL and SG in socket creation
1533 - Complete the implementation and tests of:
1535 o file (only in RL, and mainly for debugging)
1537 I lost 3 days to design a portable address resolver, and then decided
1538 that the prototype mainly have to run on my box.
1539 Addressing portability too early may be like optimizing too early :-/
1541 - use gras_init in the Tests instead of the crappy parse_log_opt
1542 (the latter function is removed)
1543 [Conditional execution]
1544 - New functions: gras_if_RL/gras_if_SG (basic support for this)
1545 [Code reorganisation]
1546 - Get rid of libgrasutils.a since it makes more trouble than it solves.
1547 Build examples against the RL library, since there is no way to disable
1548 its creation for now.
1550 For information, the beginning of coding on GRAS was back in june
1551 2003. I guess that every line has been rewritten at least twice since