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.
86 * Change the prototype of xbt_thread_create(), sorry.
87 Added a boolean parameter indicating whether we want to join this
88 thread (used in SG only for now)
89 * Implement xbt_thread_join and xbt_thread_yield in SG also.
92 * GTNetS wrappers should now be usable again (and betterly tested too)
93 * Fix a major regression from 3.2 where the timeout provided to
94 MSG_task_put_with_timeout() was used as absolute time before which
95 the comm should be done.
96 * Start to fix the <cluster> tag.
97 - Internal links should be good now (beside of the loopback, which
98 use the private link instead)
99 - paths to the external world is still rather broken
100 - the <route:multi> tag is just broken. Actually that's brain-dead.
101 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
102 to make it less stupid
103 ** Check your platform with teshsuite/simdag/platforms/flatifier **
104 * Fix a source-level compatibility glitch from 3.2: after defining
105 MSG_USE_DEPRECATED, you can use the old name
106 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
107 * Allow to compile from the SVN with automake 1.11
108 * Fix some problems when using the "start_time" tag in deployment XMLs.
110 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
112 SimGrid (3.3.3) stable; urgency=low
114 The "Need for Speed" release.
116 The timings done to validate the 3.3.2 were faulty.
117 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
119 The problem was a conversion from a manually handled vector to
120 xbt_dynar_t on the critical path.
121 xbt_dynar_foreach calls functions, inducing stack management crap.
123 We inlined these functions and xbt_dynar_foreach is now breath taking.
124 We also inlined xbt_swag_belong on the way.
126 Here are some approximate speedup measurements (on master/slaves
127 simulations lasting between 10s and 20s each):
128 3.3.1 -> 3.3.2: about same performance
129 3.3.2 -> 3.3.3: 40% speedup
130 3.3.1 -> 3.3.3: 40% speedup
131 3.3.1 with inline patch -> 3.3.3: 30% speedup
133 Our reading is that the refactoring which occurred in 3.3.2 made us
134 suffer much more from the xbt_dynar_foreach low performance, but
135 once we solved this, this refactoring proved to be very performance
136 effective. From the 40% speedup, somehow, 10% are due to the
137 inlining and 30% to the refactoring.
139 That's a pitty that gcc cannot inline functions placed in other files
140 alone. We have to choose between:
141 - break the encapsulation (by putting private data structures and
142 accessors in headers files to help gcc)
143 - live with low performance
144 - switch to a decent compiler such as icc (not quite possible).
146 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
148 SimGrid (3.3.2) stable; urgency=low
150 The "Simplicity does not preceed complexity, but follows it" release.
152 The main contributors of this release were (lexical order):
153 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
156 * Extract the routing logic into its own object.
157 (was dupplicated in network.c and workstation_LV07.c;
158 Allows to implement other ways of storing that info)
159 => kill now useless network_card concept
160 - Use dynar to represent routes (instead of void** + int*)
161 - kill link_set (use surf_network_model->resource_set instead)
162 - Add a command-line option to choose the routing schema to use
163 - Add three new models:
164 * Floyd (shortest path computed at initialization)
165 * Dijikstra (shortest path recomputed all the time)
166 * Cached Dijikstra (shortest path computed on need)
167 All these models where contributed by Silas De Munck, and are
168 described in his ICCS09 paper.
170 * Simplify model declaration
171 (less redirections, less function to write when defining a model)
172 - Factorize stuff between models:
175 surf_model_resource_set(model)
176 surf_model_resource_by_name(model, name)
177 - Unify the types of models in s_surf_model_t (using an union)
178 - Embeed fields of common_public directly into s_surf_model_t
179 - Rename model methods:
180 action_free ~> action_unref
181 action_change_state ~> action_state_set
182 action_get_state ~> action_state_get
183 - Change model methods into functions :
184 (model)->common_public->action_use ~> surf_action_ref
186 * Implement a generic resource; use it as ancestor to specific ones
187 (allows to kill duplicated code in models)
188 Drawback: timer command don't need no name nor properties;
189 workstation_CLM03 don't need no properties
190 (but I guess we can live with those few bytes wasted)
192 * Improve the action object model
193 - implement a constructor avoiding dupplicated code about field
194 initialization in generic_action part.
196 * Kill the SDP model: it has an external dependency, is deprecated
197 in flavor of modern lmm models, and didn't compile since a while
200 * Relocation of the context module from XBT to SIMIX.
201 (the context were decoupled from the simix processes, duplicating a lot of code)
202 => a lot of code was factorized
203 - less overhead is introduced during scheduling
204 - simpler API for the context factory
205 - the logic for process creation,destruction and manipulation was simplified
206 * Simplification of the s_smx_process_t data structure.
207 => accesing the simix level data associated to a process is faster now,
208 and the code is a lot more readable.
211 * Implement some more MPI primitives:
212 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
213 -implementation: Bcast: flat or 2-ary tree (default),
216 Allreduce: Reduce then Bcast
217 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
218 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
219 Alltoallv: flat tree, like ompi
221 * Add support for optimized collectives (Bcast is now binomial by default)
222 * Port smpirun and smpicc to OS X
225 * Kill SD_link_get_properties: hard to maintain and makes very little sense
226 Shout out if you used it.
229 * Display the list of still queued messages in SG mode when existing
233 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
234 * Add xbt_graph_node_get_outedges() [Silas De Munck]
235 * Add xbt_str_from_file(FILE*)
236 * Add xbt_dict_get_key achieving a linear reverse search
237 * Remove the context module
239 Portability report of this version:
240 * Main portability targets:
241 - Linux(debian)/x86/context
242 - Linux(debian)/x86/pthreads
243 - Linux(debian)/amd64/context
244 - Linux(debian)/amd64/pthreads
245 On these, we still have the eratic breakages of gras/pmm and
246 amok/saturate_sg reported in previous version. We still think
247 that the tests are the cause of the fault, not the tested code.
249 - Mac OSX Leopard/x86/context
250 Still false negative in tesh autotesting.
251 Smpi still fails, but this time because readlink does not accept -f
252 Everything seems to work properly beside of that.
255 - AIX version 5.3 (only tested contexts this time)
256 Smpi still fails there because mktemp is not installed.
257 Everything seems to work properly beside of that.
259 I managed to compile it for the first time, but several breakages.
260 Won't delay the release for this exotic platform.
262 * Windows: it's still lagging behind. If you want to help, please
265 Timing report of this version:
266 This version seem to be more than 5% faster than 3.3.1 (on linux
267 64bits with contextes). The gain is less than expected, we are
268 investigating this for next release.
270 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
272 SimGrid (3.3.1) stable; urgency=low
275 * Implement a --cfg-help to show existing configuration variables
276 * Build chain do not require doxygen in maintainer mode
279 * fix a bug on struct sizeof computation, which prevented the
280 exchange of arrays of structs in some conditions
281 - added a regression test about this in datadesc_usage
282 * Allow the exchange of 0-long dynamic vectors.
283 - for that, use -1 as indicator of dynamic size instead of 0
284 - This implied to change any size from unsigned long to long,
285 reducing a bit communication abilities, but I guess that with
286 64bits being quite common, this is more than enough.
287 - This also induce a protocol change, thus bumping network protocol
288 version from 0 to 1 (if we have external users, we have to get
289 clean on that point too ;)
290 - added two regression tests about this in datadesc_usage
291 * Be more verbose when propagating local exceptions
292 This helps debugging.
293 * Display the status of simulated processes when receiving SIGINT in
297 * Allow to control the simulation from a trace file.
298 New functions MSG_action_register() and MSG_action_trace_run()
299 The first one allows to associate a function execution to each
300 kind of action while the second one parses a trace file and
301 triggers the corresponding actions within the system.
302 For now, only a toy example is provided in examples/msg/actions
303 * Add an exemple of process migration in examples/msg/migration
304 * Fix a bug in task exchange which broke MSG_task_get_sender()
305 Add a teshsuite regression test for that.
306 [Bug: if MSG_task_get_sender() is called after sender exit,
308 * Fix a bug which prevented suspend/resume to work properly
309 * Display the status of simulated processes when receiving SIGINT
310 This fixes a regression of v3.3. due to the introduction of SIMIX
311 * Bug fixing in failure management:
312 - trace could not start by a failure at time 0
313 - failure during communications were not working
316 * Add SIMIX_process_set_name() to change the name of the current
317 process in the log messages.
318 * Store smx_hosts in a dict since we only retrieve them by name
319 * Move the configuration infrastructure to surf
322 * Move the configuration infrastructure to surf
325 * Massive internal cleanups:
326 - Store internal structures on processes instead of hosts (allows
327 to have more than one process per host, in addition of being more
329 - Cleanup the initialization/finalization process
330 - Kill a whole bunch of unneeded synchronization:
331 processes run in exclusive manner within the simulator
332 - Move queues from global tables to process data fields
334 - now accept -platform and -hostfile arguments
335 - Pass the right rank value to processes according to the hostfile
336 * Compile the examples by default, and use them as regression tests
337 * Implement MPI_Wtime()
338 * Change the reference speed to a command line option
341 * TCP_gamma can now be specified as command line option using
342 --cfg=TCP_gamma:10000000.0
343 * Change the --surf-path cmd line option into --cfg=path:
346 * Also include strbuff from xbt.h public header
347 * xbt_ex_display(): do not free the exception after displaying
348 This allows to do more with the given exception afterward.
349 Users should call xbt_ex_free() themselves.
353 Portability report of this version:
354 * Main portability targets:
355 - Linux(debian)/x86/context
356 - Linux(debian)/x86/pthreads
357 - Linux(debian)/amd64/context
358 - Linux(debian)/amd64/pthreads
359 These targets fail about 1/10 of times on gras/pmm, but we believe
360 that this is because of the test, not because of simgrid.
361 amok/saturate_sg fails even more rarely, and the test may not be
364 - Mac OSX Leopard/x86/context
365 The test suite still spits tons of errors because some obscure
366 force prevents us from removing the temporary directories
367 arguing that they still contain some metadata I've never heard of.
368 Smpi fails because seq is not installed.
369 Everything seems to work properly beside of that.
372 - AIX version 5.3 (both contexts and pthread)
373 Smpi still fails there because mktemp is not installed.
374 XML inclusions seems rosty on AIX.
376 * Windows: it's still lagging behind. If you want to help, please
379 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
381 SimGrid (3.3) stable; urgency=high
385 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
388 * Introduce the SIMIX module: factorize code between MSG and GRAS.
391 Until now, GRAS were using MSG as an interface to SURF. It was
392 quite difficult because both interface have several differences
393 (MSG channels vs GRAS sockets were the most notable point).
395 This also opens the gate to SMPI (which should occur soon) and speed
396 up simulations by to 40% (even if it were not the main goal).
398 **************************************
399 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
400 **************************************
401 The point is that events occuring at the exact same timestamp are
402 not scheduled in the same order with the old and new version. This
403 may be enough to completely change the execution of simulations in
404 some cases. Sorry for the inconvenience.
406 * Cleanup and upgrade the XML format to push further scalability
407 issues (check http://hal.inria.fr/inria-00256883/ for more info)
409 * Improve the testing infrastructure with tesh. Now a very large part of
410 the code is tested not only by being run but also by checking that the
411 output match an expected output [Mt].
413 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
414 is really less memory-demanding, which should allow you to use
415 larger files in SimGrid [AL].
417 * Inform valgrind about our contextes, so that it becomes usable
418 with the default (and more effecient) version of SimGrid
419 [contributed by Sékou Diakite, many thanks]
422 * Introduce a listener thread in charge of receiving incomming
423 messages from the network. It allows to overlap communication and
424 computation but most notably, it removes some stupid deadlocks due
425 to the fact that so far, a process could not send and receive at
426 the same time. This made most non trivial communication schema
428 * Convert the PIDs from long int to int to match the MSG ones (and
430 * New function: gras_agent_spawn() to launch a new process on
431 current host. Only working in simulation for now. [Mt]
432 * New function: gras_os_hostport() returning a constant form (ie,
433 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
436 * Make the backtrace of exceptions more human readable [Mt]
437 * New module: xbt/str [Mt]
438 a ton of string utility functions (split, join, printf to a newly
439 allocated buffer, trim, etc)
440 * New module: xbt/hash [Mt]
441 SHA1 hashing algorithm (more to come if needed)
442 * New module: xbt/synchro [Mt]
443 synchronization tools (mutex and conditions) working the same way
444 in simulation and in real life (mainly useful for GRAS, but not
446 * New module: xbt/queue [Mt]
447 classical producer/consumer synchronization scheme
448 * xbt_dynar_new_sync() creates a synchronized dynar. All access
449 (using the classical functions will get serialized) [Mt]
450 * Make dictionary internal table dynamic. No need to specify its size
451 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
453 * Make sure the log channels are organized as a tree under windows
454 (because of ANSI C compatibility issue, any channel were child of
458 * Cleaned many thing in surf and fixed a few bugs [AL].
459 * Add a nice command line configuration mechanism to compose models [AL].
460 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
461 the previous one (KCCFLN05). It relies on something that looks like
462 a max-min sharing mechanism but cannot be written as such. A new solver
463 was thus designed [AL].
464 * Add a new solver to lmm. Based on Lagrange optimization and
465 gradient-based descent, it enables to efficiently maximise systems s.a
467 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
469 This solver enables to propose two new network models for TCP Reno and
470 TCP Vegas based on Low's work. These models still need to be fully
471 tested though [Pedro Velho].
474 * Bug fix in SD_simulate. Now the time bound given as argument is
476 * Use the new parallel task model (ptask_L07) as default.
477 * Use the SURF command line configuration mechanism.
478 * 0-size tasks (for synchronization) should now work.
480 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
482 SimGrid (3.2) stable; urgency=high
486 We still experience issues on this platform, but we believe that at
489 GRAS API BREAKAGE (for simplification purpose, sorry):
490 * the gras_msgtype_by_name is not used anymore. Instead of
491 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
492 you can write (and must)
493 gras_msg_send(toserver, "request", &request);
494 - If you still want to pass a gras_msgtype_t to the function (to cache
495 the type and avoid the lookup time), use the gras_msg_send_() variant.
496 - Impacted functions:
497 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
498 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
499 * The callbacks are now expected to return 0 when everything went well
500 (just like the main() function)
502 GRAS new features and improvements:
503 * New module mecanism where user code can use per process globals [Mt]
504 This is similar to gras_userdata_*() functions, but for libraries. It
505 factorize some code developped over and over in the examples and AMOK.
506 It has still to be documented and used (only amok/peermanagement is
508 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
509 loss when they were small enough to fit into the buffer and sent quickly
510 enough so that they can all get received in one shoot.
511 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
512 if not found. Use the *_or_null() variant for the old semantic.
513 * In gras_msg_handle, do not discard messages without callback.
514 They are probably messages to be explicitly awaited later (ie, proofs of
515 mis-synchronization in userland since they are sent before being awaited)
517 * gras_socket_meas_send/recv: semantic changed!
518 The numerical arguments used to be (1) the total amount of data to send
519 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
520 messages. This was need for the fool willing to send more than MAXINT
521 bytes on quite fat pipes.
524 * Do really rename the hostmanagement module to peermanagement. [Mt]
525 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
526 but this is rather new and this was documented in the module
527 documentation (poor excuses, I admit)
528 * Bandwidth measurement semantic changed! This follows the changes to
529 gras_socket_meas_send/recv explained above.
532 * A sequential mode has been added to the workstations. When a workstation
533 is in sequential mode, it can execute only one task, and the other tasks
534 are waiting in a FIFO. [Christophe Thiery]
537 * The KCCFLN05 workstation model now handles parallel tasks. It is the
538 model for SIMDAG. [Christophe Thiery]
539 * Bug fix in the maxmin solver: Some values were close to 0 instead of
540 equal to 0, which caused some bad behaviors in
541 saturated_constraint_set_update. I now use a threshold mechanism like in
545 * When running manually src/testall, you select specific units [Mt]
546 testall is the result of our cunit mecanism, and should replace all
547 the scripty thingy around since bash don't run easily on billware.
549 * A mallocator system has been added. [Christophe Thiery]
550 Mallocators allow you to recycle your unused objects instead of freeing them
551 and allocating new ones.
553 Documentation update:
554 * FAQ reworking + New FAQs:
555 - "Valgrind spits tons of errors!" [Mt]
556 - "How to repport bugs" [Mt]
557 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
558 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
559 - Communication time measurement within MSG [AL]
560 - I experience weird communication times when I change the latency [AL]
563 - an introduction to the framework and to the used communication model
564 - an initiatic tour introducing the most proheminent features:
566 . Lesson 0: Installing GRAS
567 . Lesson 1: Setting up your own project
568 o Part 2: Message passing
569 . Lesson 2: Exchanging simple messages
570 . Lesson 3: Passing arguments to the processes (in SG)
571 . Lesson 4: Attaching callbacks to messages
572 . Lesson 5: Using globals in processes
573 . Lesson 6: Logging informations properly
574 . Lesson 7: Using internal timers
575 . Lesson 8: Handling errors through exceptions
576 . Lesson 9: Exchanging simple data
577 . Lesson 10: Remote Procedure Calling (RPC)
578 . Lesson 11: Explicitely waiting for messages
579 . Recapping of message passing features in GRAS
580 - A HOWTO section containing:
581 o HOWTO design a GRAS application
582 More are due, of course. They will come latter. In the meanwhile, you can
583 check the examples which are still here.
585 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
587 SimGrid (3.1) stable; urgency=high
591 There was a stack corruption somewhere, visible only when optimizing
592 with these versions. [Vince]
595 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
596 module that enabled to play with Directed Acyclic Graphs. It is built
597 directly on top of SURF and provides an API rather close to the old
598 SG. Some old codes using SG are currently under rewrite to check that
599 all needful functions are provided. [Christophe Thiery]
602 * Complete rewrite of the KCCFLN05 workstation model. It is now an
603 extension of the classical CLM03 model that gracefully handles
604 failures. This is now the default model for MSG and GRAS. It doesn't
605 handle parallel tasks yet though. [AL]
606 * Bug fix: Weights were not correctly set in the network part.
607 WARNING: This may have resulted in incorrect results with simulations
608 where there are more than one flow on a given link. [AL]
611 * After a (long ?) discussion on simgrid-devel, we have decided that the
612 convention we had on units was stupid. That is why it has been decided
613 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
614 WARNING : This means that all previous platform files will not work as
615 such with this version! A warning is issued to ask users to update
617 A conversion script can be found in the contrib module of the CVS, under
618 the name contrib/platform_generation/surfxml_update.pl [MQ]
621 * Bug fix: Processes were started in reverse order, wrt deployment file.
622 WARNING: if your code relies on this bug, please fix it. [AL]
623 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
624 being executed on two different locations. [AL]
625 * Bug fix: Failures are now better supported thanks to Derrick's tests
626 (there was many failure situations I hadn't thought of and that weren't
627 correctly handled). [AL]
628 * New function: MSG_host_is_avail indicates you whether a given m_host_t
632 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
633 Exception occurring on server-side are propagated back to client (!).
635 API CHANGE: the callback changed their prototype. Change:
636 int my_handler(gras_socket_t expeditor, void *payload_data) {
638 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
639 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
641 * New! function: gras_msg_handleall to deal with all messages arriving
642 within a given period.
643 * New! function: gras_socket_server_range to get a server socket in a
644 range of port numbers (ease to avoid port number conflicts) [MQ]
645 * New! gras processes display their backtrace when they get a SIGUSR1
646 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
647 Sweet to debug RL processes [MQ]
651 - Do not force experiment sizes to be expressed in kb, or it becomes
652 impossible to measure the latency this way (needs one byte-long tests)
653 WARNING: this changes the amok_bw_* function semantic. [MQ]
654 - Implements the link saturation stuff. [MQ]
655 * Peer management module:
656 New! module factorizing code that we wrote over and over [MQ].
659 * New module: cunit (my jUnit implementation in ansi C) [MQ]
660 - Test units are placed directly into the library code, they get extracted
661 automatically and placed into the src/testall binary.
662 - Convert most of the XBT tests to this system.
663 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
664 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
665 live in the same C code. This required to change a little bit the API
666 of surfxml parsing but shouldn't be an issue for end-users. [AL]
667 * New module: sparse graph structure with basic algorithms (this is work
668 in progress and the API is not considered to be frozen yet). [AL]
669 * Display more information on backtraces: source line & function names are
670 now displayed just like valgrind does (rely on addr2line tool) [MQ]
671 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
672 * Reworked a little bit some #include statements to load only required
673 headers. Some user code that relied on SimGrid to include stdlib or
674 stdio may need to include it by themselves. [AL]
675 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
677 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
678 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
679 but I guess that almost nobody used those parts. [MQ]
681 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
683 SimGrid (3.0.1) stable; urgency=low
686 * Unfortunately, I had missed 5 misnamed functions:
687 xbt_fifo_item_t xbt_fifo_newitem(void);
688 void xbt_fifo_freeitem(xbt_fifo_item_t);
689 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
690 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
691 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
692 They're now deprecated. Please use their new versions:
693 xbt_fifo_item_t xbt_fifo_new_item(void);
694 void xbt_fifo_free_item(xbt_fifo_item_t);
695 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
696 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
697 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
699 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
700 * Documentation: xbt_log module unmercifully reworked [MQ]
701 * Bugfix: there was a problem with the ending of contexts with
702 the pthread backend. It caused some weird deadlock or behavior
703 depending on the pthread implementation. [AL]
704 * Bugfix: get the exceptions raised in the simulator repport where
705 and why they come from when they are not catched in time [AL, MQ]
708 * Bugfix: Do repport the error when two non-connected hosts try to
709 exchange data (Thanks to Flavien for stumbling into this one) [AL]
712 * Add additionnal checkings on communications. Assert that two
713 communicating hosts are connected by a set of links... [AL]
716 * Add additionnal checkings on channel values in communication [AL]
717 * New: MSG_task_get_source to see on which host a task was generated [HC]
718 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
719 the number of tasks waiting to be received on channel and sent
721 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
722 waits for the first task coming from a given host.. [AL]
724 GRAS new functionnalities: [MQ]
725 * Enhance the parsing macro to allow the size of multidimentional objects
726 to be given thru annotations.
727 * New example (and documentation): Matrix Multiplication a la RPC
728 (as when I was young!) and fix a bunch of bugs found on the way.
730 GRAS performance improvements: [MQ]
732 * Reduce the amount of cbps creation/destruction by making it static to
733 datadesc_send/recv() and using a (newly created) cbps_reset (based on
736 * Change libdata to a set so that we can search for stuff by ID (and thus
737 reduce the insane amount of dict lookups)
740 * Actually implement gras_datadesc_copy() so that we don't have to mimick
741 RL communication on top of SG since it's so uneffective.
742 It may also be used for inter-thread communication in RL, one day.
743 * Use gras_datadesc_copy() to exchange messages on top of SG
745 - improve message exchange performance on top of SG
746 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
747 * Don't exchange on the network the size of the used part of buffer,
748 instead, specify the possible buffer size to read().
750 - reduces the amount of read/write calls (one pair per exchange)
751 - reduces the amount of exchanged data (the size)
752 - allows to retrieve all arrived data on receiver side, if we don't need
753 it right now (subsequent read will peek the buffer)
754 - allows the receiver to proceed with the begining of the stream before
755 everything is arrived
756 - make it possible to build an iov transport (using readv/writev)
758 - take care of the data with non-stable storage (like stacked data),
760 * If possible, TCP send uses vector I/O (when writev() is here)
761 - Don't use it for receive since we send data sizes and data on the
762 same stream, so we wouldn't be able to chain large amount of chunks
763 before having to flush the stuff to read the size.
764 * Rework the transport plugin mecanism to simplify it and reduce the
765 amount of pointer dereferencement when searching for the right function
768 * I guess that now, we do almost as few system calls as possible while
769 doing as few data copy as possible.
771 To improve it further, we could try to send all the sizes first and then
772 all the data (to use iov on receiving size), but it's only a partial
773 solution: when you have 2 dimensional data, the sizes of the second
774 dimension is data of the first dimension, so you need 3 streams.
776 I'm not sure the potential performance gains justify the coding burden.
778 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
780 SimGrid (3.00) stable; urgency=high
783 * New! Give the possibility to hijack the surf parser and thus bypass
784 MSG_create_environment and MSG_launch_application. Have a look at
785 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
787 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
789 SimGrid (2.96) unstable; urgency=low
794 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
795 This deprecates the xbt_error_t mecanisms.
796 It modifies (simplifies) all XBT and GRAS API.
797 MSG API keeps unchanged (exceptions raised by XBT are catched from
798 within MSG and masked with existing error handling facilities)
801 * New! Add a FATPIPE model. [AL]
802 * New! Add a parallel task model. [AL]
803 * New! Add automatically a loopback interface (in the default
804 network model) if none was precised.
807 * Bugfix: MSG_process_resume now works with the current running process.
809 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
810 * Modification of MSG_task_get_compute_duration. Once a task has been
811 processed, the value returned by this function is now equal to 0. [AL]
812 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
813 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
814 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
815 of a m_task. For now, MSG_task_cancel only works with computation
817 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
818 of the processor (in Mflop/s) regardless of the current load on the
820 * API Change: use proper naming convention for MSG_getClock and
821 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
823 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
824 This function changes the priority of a computation task. This priority
825 doesn't affect the transfer rate. A priority of 2 will make a task
826 receive two times more cpu power than the other ones. This function
827 has been added to suit the needs of Nguyen The Loc and hasn't been that
828 much tested yet. So if it fails, please report it and send me your code.
830 * API Change: removed all functions and types that were marked "deprecated"
831 since many months. Renamed MSG_global_init_args to MSG_global_init.
833 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
835 SimGrid (2.95) unstable; urgency=low
838 * Steal some nice code to GNU pth to fix context detection and usage [AL]
839 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
840 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
843 * Bugfix: Allow absolute paths for platform description files [MQ]
844 * Bugfix: do free the variables after use. Leads to drastic performance
846 * Implement max_duration (ie, timeouts) on resources [AL]
849 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
851 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
852 the needed support (timeouts) [AL]
855 * Implement measurement sockets. You can now get the bandwidth between two
856 hosts thanks to AMOK (see below). [MQ]
857 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
858 dynar over the network (yeah) [MQ]
859 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
860 * simple/static token-ring example. [Alexandre Colucci and MQ]
861 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
865 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
866 type parsing. "short" and "long" modifiers were also ignored; other
867 modifier (such as reference level) are still ignored. [MQ]
868 * Embeed the buffer size within the buffer itself on SG. [MQ]
869 That way, send() are atomic and cannot get intermixed anymore (at least
870 the ones which are less than 100k; bigger messages still have the issue)
871 * Array size pushed by the field, not by the field type (or each
872 and every long int will push stuff to the cbps) [MQ]
873 * use select() to sleep since it allows to portably sleep less than one
876 GRAS (minor cleanups)
877 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
880 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
881 * type category 'ignored' killed as it was never used and were difficult
883 * whether a type can cycle or not is now a flag, leaving room for more
884 flags (as "ignored", if we feel the need one day ;)
885 * Rename raw sockets to measurement sockets since "raw" has another
886 meaning in networking community.
889 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
890 and offers features not belonging to GRAS but that most applications
891 need. One day, it may be a set of plugins loadable at runtime.
892 * New module: bandwidth
893 bandwidth measurement between arbitrary nodes running this module. [MQ]
895 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
897 SimGrid (2.94) unstable; urgency=low
899 The first beta release of SimGrid 3 !
903 * Update the main page and the FAQ. Adding references to gforge.
906 * Add a gras_os_getpid function.
909 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
910 * Extend the logs so that they also print PID, hostname, date, ... if
912 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
913 and kill the old version which were in testsuite/
914 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
918 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
919 for users. Instead, each programming environment (GRAS, MSG,...) use it
920 when needed to provide such a feature to users.
921 Don't shortcut the mecanism or you will also shortcut the virtualization
922 you need on the simulator.
926 * Cleanups in configury with regard to compile optimization/warning flags.
927 Also add -fno-loop-optimize to any powerpc since it's the optimization
928 killing gcc (< 3.4.0).
929 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
930 needed by MSG examples complications
931 * Borrow configury beautifications from PHP
934 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
935 warning (thanks loris for stumbling into this one).
936 * Bugfix: stop loading private headers (gras_config.h) from the public
940 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
941 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
942 RL would imply a DNS resolver, which is *hard* to do in a portable way
943 (and therefore delayed).
944 * Implement a real timer mecanism and use it in timing macros. This allows
945 to avoid rounding errors and get a 0.000005 sec precision in timing
946 macros. While I was at it, various cleanups:
947 - allow to declare more than one timed section per file (fix a stupid bug)
948 - move some private declaration to the right place
949 - merge conditional execution and timing macros into emulation module
950 - document the module
951 - make sure the module cleanups its mess on gras_exit
952 * Documentation improvements:
953 - (new) how to compile applications using GRAS
954 - (new) emulation support (timing macros)
956 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
958 SimGrid (2.93) unstable; urgency=low
960 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
963 - Use Paje properly where used. Still to be sanitized properly.
964 - Portability fix: Add an implementation of the contexts using pthread
968 - Add xbt_procname(): returns the name of the current process.
969 Use it to show the current process's name in all logging.
971 - fix detection of older flex version and the reaction, since we do
972 depend on modern ones (we use lex_destroy)
973 - Better separation of SG and RL in the libs: remove all simulation code
974 from libgras. As a result, this lib is now only 200k when stripped.
975 Some of the xbt modules may also be duplicated (two sets and such) and
976 should be cleaned/killed before SG3.
977 - Insist on using xlC on AIX because of weird problems involving gcc there.
978 - Cleanup the make remote stuff. This is now done by scripts
979 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
980 mainly for our private use, but we're working on changing them to user
983 - Bugfix: flush the socket on close only if there is some *output*.
984 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
986 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
989 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
991 SimGrid (2.92) unstable; urgency=low
993 Alpha 3 on the path to SimGrid 3
997 - New! First try of benchmarking macros.
998 - New! First try so that gras_stub_generator generate deployment and
999 remote compilation helpers.
1001 - Bugfix: Initialization fix in msg_test.
1005 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
1007 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
1009 - API Change: gras_os_sleep to take the amount of seconds as a double.
1010 Accepting an int was error prone since it was the only location where
1011 seconds were coded as such. It leaded to damn rounding errors.
1012 - Bugfix: Hard to belive that timers ever worked before this.
1014 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
1016 SimGrid (2.91) unstable; urgency=low
1018 Alpha 2 on the path to SimGrid 3
1022 - Bug fix in the lmm_solver.
1024 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
1025 through the function MSG_paje_output.
1026 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
1027 - It is possible to bound the rate of a communication in MSG with
1028 MSG_task_put_bounded() (was already in the previous version but I had forgotten
1029 to write it in the changelog).
1030 - Bug fix to let GRAS run on top of MSG until we move it directly on top
1035 - Various cleanups to the autotools stuff
1036 - Begin to move Gras examples to examples/gras/
1037 - Let make distcheck work again (yeah!)
1039 - documentation overhauled using doxygen.
1040 gtk-doc-tools is dead in SimGrid now.
1041 - Automatically extract all existing logging categories, and add the list
1042 to the documentation (long standing one, to say the less)
1044 - Cleanup the known architecture table. Reorder the entries to group what
1045 should be, and use a more consistent naming scheme.
1046 (some of the test dataset are still to be regenerated)
1047 - New! Allow library to register globals on each process just as userdata
1049 This is implemented using a xbt_dict and not a xbt_set, so we loose the
1050 lookup time (for now).
1051 Use it in msg and trp.
1052 This cleans a lot the internals and helps enforcing privacy of the
1053 headers between the gras components.
1054 - New! Add a timer mechanism, not unlike cron(8) and at(1).
1055 - Bugfix: gras_os_time was delirious in RL.
1056 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
1058 - Reenable GRAS now that it works.
1060 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
1062 SimGrid (2.90) unstable; urgency=low
1064 Alpha 1 on the path to SimGrid 3
1066 * It is a long time since the last release of SimGrid. I'm sorry about
1067 that but as I had told you, I was rewriting a lot of things. I apologize
1068 to those who had been reporting bugs to me and that I had not answered.
1069 If your bug is still in the new version, please tell me. Here is a
1070 summary of the main changes.
1072 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
1073 lead by Martin Quinson. As a consequence SimGrid gains a lot in
1074 portability, speed, and a lot more but you'll figure it out later.
1075 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
1076 I wanted to release the new MSG as soon as possible and I have
1077 broken GRAS, which is the reason why, for now, only MSG is fully
1078 functional. A laconic description of these projects is available
1079 in the documentation.
1081 * REVOLUTION 2: I have removed SG and I am now using a new simulation
1082 kernel optimized for our needs (called SURF but only the developers
1083 should use it). Hence, MSG is now roughly 30 times faster and I think
1084 that by rewriting a little bit MSG, I could event speed it up a little
1085 bit more. Beside the gain in speed, it is also much easier to encode a
1086 new platform model with SURF than it was with SG. More to come...
1088 * REVOLUTION 3: I have tried to change a little as possible the API of
1089 MSG but a few things really had to disappear. The main differences
1090 with the previous version are :
1091 1) no more m_links_t and the corresponding functions. Platforms are
1092 directly read from a XML description and cannot be hard-coded
1093 anymore. The same format is used for application deployment
1094 description. The new format is described in the documentation.
1095 Have a look in tools/platform_generation. There is a tiny script
1096 that converts from the old platform format to the new one. Concerning
1097 the application deployment format, parsing the old one is tricky.
1098 I think most of you should however be able to convert your files. If
1099 it is really an issue, I can write a C code that does the conversion.
1101 2) the toolbox tbx does not exist anymore. We now have a library
1102 with much more data-structures but without the hash-tables (we have
1103 dictionaries that are much faster).
1105 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
1107 *****************************************************************************
1108 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
1109 * don't feel like converting the oldies. (Mt) *
1110 *****************************************************************************
1113 Version 2.90: "the long awaited one"
1114 - Finished rewriting and debugging MSG. Rewrote the documentation.
1115 - disable GRAS for now since it needs to be ported to the newest SG
1118 - Finish the port to windows (using mingw32 for cross-compile)
1121 - Main loop and datastructures of SURF. A cpu resource object is
1122 functional. Surf can thus be used to create cpu's with variable
1123 performance on which you can execute some actions.
1125 2004-11-15 Martin Quinson
1126 - Port to ARM. Simply added the alignment and size descriptions. Should
1127 work, but the ARM machines are so slow that I didn't had the opportunity
1128 to 'make check' over there yet.
1130 2004-11-15 Arnaud Legrand
1131 - Trace manager now written. It uses a heap structure and is therefore
1132 expected to be efficient. It may however be speeded up (particularly
1133 when many events occur at the same date) by using red and black
1134 trees. One day maybe...
1135 - Max-min linear system solver written. It uses a sparse matrix
1136 structure taking advantage of its expected use. Most operations are
1137 O(1) and free/calloc are called as few as possible. The computation of
1138 the minimum could however be improved by using a red and black tree
1141 2004-11-03 Arnaud Legrand
1142 - Rename every gras_* function that was in xbt/ to its xbt_
1144 - Add a heap and a doubly-linked list to xbt
1145 - Added a dichotomy to the dictionaries. make check works as well before
1146 so I assume that the patch is correct. I do not know however if things
1147 run effectively faster than before now. :)
1149 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
1150 SimGrid, and the version number is bumped to 2.x
1152 2004-10-29 Martin Quinson
1153 - Introduction of the remote errors.
1154 They are the result of a RMI/RPC on the remote machine.
1155 ErrCodes being scalar values, you can't get the host on which those
1156 errors did happen. Extending the error mechanism as in Gnome is possible.
1157 No idea yet whether it is a good idea.
1159 2004-10-28 Martin Quinson
1160 - Interface revolution: the Starred Structure Eradication.
1161 I used to do typedef struct {} toto_t; and then handle *toto_t.
1162 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
1163 - ???_t is a valid type (builded with typedef)
1164 - s_toto_t is a structure (access to fields with .)
1165 - s_toto is a structure needing 'struct' keyword to be used
1166 - e_toto_t is an enum
1167 - toto_t is an 'object' (struct*)
1169 typedef struct s_toto {} s_toto_t, *toto_t;
1170 typedef enum {} e_toto_t;
1171 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
1172 s_toto_t) is private.
1174 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
1175 so that it can set the variable to NULL. It was so for dicts and sets,
1176 it changed for dynars.
1178 - Fix a bunch of memleaks in dict_remove
1179 - Fix a bug in sg/server_socket opening: it failed all the time.
1181 2004-10-07 Martin Quinson
1182 - Speed up dynar lookup operation a bit.
1184 gras_dynar_get is dead.
1186 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
1187 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
1188 (which gives you the address of the stored data).
1190 gras_dynar_get_as is an helpful macro which allows you to retrieve a
1191 copy of the data using an affectation to do the job and not a memcpy.
1193 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
1194 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
1196 It does not really speedup the dynar test because they are
1197 setting elements all the time (and look them seldom). But the dict does
1198 far more lookup than setting.
1200 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
1202 2004-10-05 Martin Quinson
1203 - Allow to (en/dis)able the cycle detection at run time.
1205 Whether we should check for cycle or not is now a property of each
1206 datatype. When you think there may be some cycle, use datadesc_cycle_set.
1207 datadesc_cycle_unset allow to remove this property when previously set.
1209 Note that the cycle detection is off by default since it impacts the
1210 performance. Watch the data you feed GRAS with ;)
1212 This property is hereditary. Any element embedded in a structure having it
1213 set have it set for the time of this data exchange.
1215 You should set it both on sender and receiver side. If you don't set it on
1216 sender side, it will enter an endless loop. If you forget on receiver
1217 side, the cycles won't be recreated after communication.
1219 - Header reorganization.
1220 Kill gras_private.h, each submodule must load the headers it needs.
1222 2004-10-04 Martin Quinson
1223 - Interface revolution: do not try to survive to malloc failure.
1225 Now, gras_malloc and friends call gras_abort() on failure.
1226 As a conclusion, malloc_error is not a valid error anymore, and all
1227 functions for which it was the only gras_error_t return value are
1228 changed. They now return void, or there result directly.
1229 This simplify the API a lot.
1231 2004-09-29 Martin Quinson
1232 - Re-enable raw sockets.
1233 Created by gras_socket_{client,server}_ext;
1234 Used with gras_raw_{send,recv}
1237 It should allow to kill the last bits of gras first version soon.
1239 This is not completely satisfactory yet (duplicate code with
1240 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
1243 - Simplify transport plugin (internal) interface by not passing any
1244 argument to _server and _client, but embedding them in the socket
1247 2004-09-28 Martin Quinson
1248 - Finish the port to AIX.
1249 autoconf was my problem (segfault within the malloc replacement
1250 function. No idea why)
1252 2004-09-16 Martin Quinson
1253 - Fix some size_t madness on 64bit architectures.
1255 2004-09-08 Martin Quinson
1256 - Reduce the number of system headers loaded, overload some more system
1257 calls (such as malloc to cast the result of the system one, and work
1259 - Fix and reintroduce the config support
1261 2004-09-07 Martin Quinson
1262 - Source code reorganization to allow Arnaud to surf all over there.
1263 - Allow to document the logging categories.
1264 - Remove all uppercase from logging categories and useless cleanup in names.
1266 2004-08-18 Martin Quinson
1267 Version 0.6.2 (protocol not changed; API changed)
1268 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
1269 gras_error_t), and NULL when not found. Functions expecting a msgtype
1270 as argument (msg_wait; msg_send) deal with NULL argument by providing a
1271 hopefully usefull message.
1272 - Portability to prehistoric sparcs again
1274 2004-08-17 Martin Quinson
1275 Version 0.6.1 (protocol not changed; ABI not changed)
1276 - prealloc some buffers to speed things up
1278 2004-08-11 Martin Quinson
1279 Version 0.6 (protocol not changed; ABI expended)
1280 - The parsing macro can deal with the references, provided that you add
1281 the relevant annotations (using GRAS_ANNOTE(size,field_name))
1283 2004-08-09 Martin Quinson
1284 Version 0.5 (protocol not changed; ABI changed)
1285 - Allow to off turn the cycle detection code in data exchange at
1286 compilation time. It should be at run time, but I'm short of time (and
1287 the config stuff is still broken). That way, we keep dict out of the
1288 critical path, which is good because the performance is poor:
1289 - search not dichotomial yet
1290 - dynar give no way to access their content and memcpy everytime
1291 - In composed data description (struct, ref and so on), stop foolness of
1292 keeping the subtype's ID, but store the type itself. This keeps sets out
1293 of the critical path, which is good since they rely on dynar and
1294 dictionnaries. The only loose of that is that we cannot detect the
1295 redeclaration of a structure/union with another content (but I'm not sure
1296 the code detected well this error before anyway). We still can detect
1297 the redefinition discrepancy for the other types.
1298 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
1299 it breaks the code because of type-punning used all over the place).
1300 This breaks on all non-gcc architectures (for now).
1302 All those changes (plus the buffer of last time) allow me to gain 2 order
1303 of magnitude on cruel tests consisting of 800000 array of integers on two
1304 level of a hierarchical structure (200 secondes -> 4 secondes)
1307 - the selector of reference must now return the type it points to, not
1308 the ID of this type.
1310 2004-08-06 Martin Quinson
1311 Version 0.4 (protocol changed; ABI not changed)
1312 - Allow to pass --gras-log argument to processes in simulation mode. Really.
1313 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
1314 - Implement a buffer transport, and use it by default (it relies on tcp in
1315 real life and on sg in simulation).
1316 That's a bit hackish since I had a new field to the structure to store
1317 its data without interfering with the subtype ones. Inheritance
1318 is tricky in C. And that's a kind of reverse inheritance with one class
1319 derivating two classes. Or maybe a game with java interfaces. Anyway,
1320 that's damn hard in C (at least).
1321 Moreover, I got tired while trying to ensure plugin separation and
1322 genericity in SG mode. MSG wants me to do weird things, so let's go for
1323 cruel hacks (temporarily of course ;).
1324 See comment in transport_private.h:71
1325 - do not include all the _interface headers in private but in the files
1326 which really need them (to cut the compilation time when they are
1329 2004-07-26 Martin Quinson
1330 Version 0.3 (protocol not changed; ABI changed)
1331 - Major overhault of the datadesc interface to simplify it:
1332 - shorted the function names:
1333 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
1334 - add a trivial way to push/pop integers into the cbps without malloc.
1335 This allows to make really generic sub_type description, which simply
1336 pop their size of the stack.
1337 - add a function gras_datadesc_ref_pop_arr() which does what users want
1338 most of the time: Declare a dynamic array (which pops its size of the
1339 stack) and declare a reference to it. Poor name, but anyway.
1340 - kill the post-send callback, add a post-receive one
1342 2004-07-23 Martin Quinson
1343 Version 0.2 (protocol changed; ABI changed)
1344 - add some testing for cpbs in the test cases, and fix some more bugs.
1345 This invalidate again the little64 data file, since I cannot regenerate
1347 - remove an awfull optimization in the logging stuff, allowing me to:
1348 - understand it again
1349 - learn gcc how to check that the argument match the provided format
1350 - fix all errors revealed by gcc after that
1351 - internal keys of dict are not \0 terminated. Deal with it properly in
1352 loggings instead of segfaulting when the user want to see the logs :-/
1354 2004-07-22 Martin Quinson
1355 - Fix some stupid bug preventing cbps (callback postit) from working
1357 2004-07-21 Martin Quinson
1358 - Some documentation cleanups
1359 - remove the useless last argument of msgtype_declare
1360 - rename the Virtu functions to fit into the 'os' namespace
1361 - move headers src/include -> src/include/gras/ and stop fooling with
1362 gras -> . symbolic link
1363 - make distcheck is now successful
1365 2004-07-19 Martin Quinson
1367 - Build shared library also
1368 - Install html doc to the right location
1369 - stop removing maintainer files in make clean
1370 - build tests only on make check
1372 2004-07-13 Martin Quinson
1374 - No major issue in previous version => change versionning schema
1375 - Re-enable little64 convertion test now that Abdou kindly regenerated the
1376 corresponding dataset.
1378 2004-07-11 Martin Quinson
1380 - Get it working with any kind of structure (we can compute the padding
1381 bytes remotely for all the architectures I have access to)
1382 - Implement the structure parsing macro (still not quite robust/complete)
1383 - Improvement to the remote testing toysuite
1385 2004-07-10 Martin Quinson
1386 [autoconf mechanism]
1387 - get ride of a bunch of deprecated macros
1388 - actually run the test for two-compliment, not only compile it :-/
1389 - test whether the structures get packed (and bail out if yes. Damn.
1390 Alignment is a serious matter)
1391 - test whether the structures get compacted (but respecting the alignment
1392 constraints of each types)
1393 - test whether the array fields of structures can straddle alignment boundaries
1395 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
1396 (took me 2 hours to find that bug, looking at the wrong place)
1397 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
1398 before sending/receiving and are used to compute the offsets of fields
1399 - Given that padding size depend even on compiler options, keep track of
1400 alignment and aligned_size only for the current architecture. Not a big
1401 deal since we send structure fields one after the other (seems
1403 - Add the datastructure used for IEEE paper by the PBIO guys to the test
1404 program, let it work on linux/gcc/little32. portability todo.
1406 2004-07-08 Martin Quinson
1407 - import and improve remote compilation support from FAST
1408 - make sure make check works on half a dozen of machines out there
1410 2004-07-07 Martin Quinson
1411 Let's say it's version 0.0.3 ;)
1412 - Implement conversions (yuhu!)
1413 - Let it work on solaris (beside conversion, of course)
1414 - Stupid me, using rand() to generate the conversion datatests in not wise.
1416 2004-07-06 Martin Quinson
1417 - Let make dist work, since I'm gonna need it to compile on remote hosts
1418 - Let Tests/datadesc_usage write the architecture on which the file was
1419 generated as first byte.
1420 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
1421 architecture descriptions.
1422 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
1423 on those architectures.
1424 - Optimization: send/recv array of scalar in one shoot
1426 2004-07-05 Martin Quinson
1427 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
1429 - Plug a whole bunch of memleaks
1430 - each process now have to call gras_{init,exit}. One day, their log
1431 settings will be separated
1432 - Continue the code factorisation between SG, RL and common in Transport.
1434 2004-07-04 Martin Quinson
1436 - Redistribution between SG and RL.
1437 We wanna have to accept in SG, so move accepted related parts of RL in
1438 the common part. (more precisely, the dynar of all known sockets is no
1439 more a static in transport.c, but part of the process_data)
1441 [gras_stub_generator]
1442 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
1444 2004-07-03 Martin Quinson
1445 - Create a new log channel tbx containing dict, set, log, dynar (to shut
1446 them all up in one shot)
1448 - Fix the ugly case of reference to dynamic array.
1449 - New (semi-public) function gras_datadesc_size to allow the messaging
1450 layer to malloc the needed space for the buffer.
1452 - gras_socket_close now expect the socket to close (and not its address to
1453 put NULL in it after it). This is because the socket passed to handlers
1454 is one of their argument (=> not writable).
1456 - propagate the interface cleanup from last week in datadesc, ie remove a
1457 superfluous level of indirection. User pass adress of variable
1458 containing data (both when sending and receiving), and not of a variable
1459 being a pointer to the data. Let's say that I like it better ;)
1460 The price for that is constructs like "int msg=*(int*)payload" in
1461 handlers, but it's a fine price, IMHO.
1463 - Let it work in RL (yuhu)
1465 2004-06-21 Martin Quinson
1467 - porting SG plugin and SG select to new standards (works almost).
1468 - plug memleaks and fix bugs around.
1471 - cleanup the prototype of data recv and force users to specify when they
1472 want to handle references to objects. Test case working even for cycles.
1473 - plug memleaks. Valgrind is perfectly ok with this.
1475 2004-06-12 Martin Quinson
1477 - cleanup the separation between plugin and main code in plugin creation
1479 2004-06-11 Martin Quinson
1481 - Reput hook for raw sockets, needed for BW experiments
1482 - kill a few lines of dead code
1483 [Data description] Interface cleanup
1484 - gras_datadesc_by_name returns the searched type or NULL.
1485 That way, no variable is needed to use a type desc once, which makes
1487 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
1488 two parameters were strings (field name, type name), leading to
1490 [Dicos] Interface cleanup
1491 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
1492 This is consistant with the dynar API.
1494 2004-04-21 Martin Quinson
1496 - Porting to new standards.
1498 - interface cleanup.
1499 There is no bag anymore, no need to take extra provision to mask the
1500 pointers behind "ID".
1501 Better splitup of functions between files create/exchange/convert.
1502 This is still a bit artificial since convert and receive are so
1503 interleaved, but anyway.
1505 - add a queued message list to procdata (the ones not matching criteria
1507 - factorize some more code between SG and RL wrt procdata
1509 - use gras_exit in example to track memleaks
1510 - get rid of gs_example now that GS is properly integrated into gras
1511 - update run_test to integrate the lastest tests (datadesc)
1513 - rename WARNINGn macros to WARNn since it prooved error-prone
1515 2004-04-19 Martin Quinson
1517 - register init/exit functions within gras module mechanism
1518 - send/receive function.
1519 Convertion is not implemented, but short-cutted if not needed.
1520 struct/array elements are sent one by one (instead of block-wise), but
1521 nobody really cares (yet). Get a prototype before optimizing.
1522 - tests (using a file socket) for DD send/receive on:
1523 - base types: int, float
1524 - array: fixed size, string (ie ref to dynamic string)
1525 - structure: homogeneous, heterogeneous
1526 - chained list, graph with cycle
1527 Believe it or not, valgrind is not too unhappy with the results. The
1528 cycle happily segfaults, but the others are ok. And I'm sick of pointers
1532 - Bugfix when using a filename explicitely (instead of '-')
1534 2004-04-09 Martin Quinson
1536 - factorize more code between RL and SG in socket creation
1537 - Complete the implementation and tests of:
1539 o file (only in RL, and mainly for debugging)
1541 I lost 3 days to design a portable address resolver, and then decided
1542 that the prototype mainly have to run on my box.
1543 Addressing portability too early may be like optimizing too early :-/
1545 - use gras_init in the Tests instead of the crappy parse_log_opt
1546 (the latter function is removed)
1547 [Conditional execution]
1548 - New functions: gras_if_RL/gras_if_SG (basic support for this)
1549 [Code reorganisation]
1550 - Get rid of libgrasutils.a since it makes more trouble than it solves.
1551 Build examples against the RL library, since there is no way to disable
1552 its creation for now.
1554 For information, the beginning of coding on GRAS was back in june
1555 2003. I guess that every line has been rewritten at least twice since