1 SimGrid (3.3.4) unstable; urgency=low
3 The "Desktop Grid needs love too" release.
5 * Use LV08 as default network model since it gives better accuracy
6 for small messages and shouldn't change things for big ones.
7 Use --cfg=network_model:CM02 to get the previous behavior.
9 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
12 SimGrid (3.3.3) stable; urgency=low
14 The "Need for Speed" release.
16 The timings done to validate the 3.3.2 were faulty.
17 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
19 The problem was a conversion from a manually handled vector to
20 xbt_dynar_t on the critical path.
21 xbt_dynar_foreach calls functions, inducing stack management crap.
23 We inlined these functions and xbt_dynar_foreach is now breath taking.
24 We also inlined xbt_swag_belong on the way.
26 Here are some approximate speedup measurements (on master/slaves
27 simulations lasting between 10s and 20s each):
28 3.3.1 -> 3.3.2: about same performance
29 3.3.2 -> 3.3.3: 40% speedup
30 3.3.1 -> 3.3.3: 40% speedup
31 3.3.1 with inline patch -> 3.3.3: 30% speedup
33 Our reading is that the refactoring which occurred in 3.3.2 made us
34 suffer much more from the xbt_dynar_foreach low performance, but
35 once we solved this, this refactoring proved to be very performance
36 effective. From the 40% speedup, somehow, 10% are due to the
37 inlining and 30% to the refactoring.
39 That's a pitty that gcc cannot inline functions placed in other files
40 alone. We have to choose between:
41 - break the encapsulation (by putting private data structures and
42 accessors in headers files to help gcc)
43 - live with low performance
44 - switch to a decent compiler such as icc (not quite possible).
46 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
48 SimGrid (3.3.2) stable; urgency=low
50 The "Simplicity does not preceed complexity, but follows it" release.
52 The main contributors of this release were (lexical order):
53 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
56 * Extract the routing logic into its own object.
57 (was dupplicated in network.c and workstation_LV07.c;
58 Allows to implement other ways of storing that info)
59 => kill now useless network_card concept
60 - Use dynar to represent routes (instead of void** + int*)
61 - kill link_set (use surf_network_model->resource_set instead)
62 - Add a command-line option to choose the routing schema to use
63 - Add three new models:
64 * Floyd (shortest path computed at initialization)
65 * Dijikstra (shortest path recomputed all the time)
66 * Cached Dijikstra (shortest path computed on need)
67 All these models where contributed by Silas De Munck, and are
68 described in his ICCS09 paper.
70 * Simplify model declaration
71 (less redirections, less function to write when defining a model)
72 - Factorize stuff between models:
75 surf_model_resource_set(model)
76 surf_model_resource_by_name(model, name)
77 - Unify the types of models in s_surf_model_t (using an union)
78 - Embeed fields of common_public directly into s_surf_model_t
79 - Rename model methods:
80 action_free ~> action_unref
81 action_change_state ~> action_state_set
82 action_get_state ~> action_state_get
83 - Change model methods into functions :
84 (model)->common_public->action_use ~> surf_action_ref
86 * Implement a generic resource; use it as ancestor to specific ones
87 (allows to kill duplicated code in models)
88 Drawback: timer command don't need no name nor properties;
89 workstation_CLM03 don't need no properties
90 (but I guess we can live with those few bytes wasted)
92 * Improve the action object model
93 - implement a constructor avoiding dupplicated code about field
94 initialization in generic_action part.
96 * Kill the SDP model: it has an external dependency, is deprecated
97 in flavor of modern lmm models, and didn't compile since a while
100 * Relocation of the context module from XBT to SIMIX.
101 (the context were decoupled from the simix processes, duplicating a lot of code)
102 => a lot of code was factorized
103 - less overhead is introduced during scheduling
104 - simpler API for the context factory
105 - the logic for process creation,destruction and manipulation was simplified
106 * Simplification of the s_smx_process_t data structure.
107 => accesing the simix level data associated to a process is faster now,
108 and the code is a lot more readable.
111 * Implement some more MPI primitives:
112 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
113 -implementation: Bcast: flat or 2-ary tree (default),
116 Allreduce: Reduce then Bcast
117 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
118 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
119 Alltoallv: flat tree, like ompi
121 * Add support for optimized collectives (Bcast is now binomial by default)
122 * Port smpirun and smpicc to OS X
125 * Kill SD_link_get_properties: hard to maintain and makes very little sense
126 Shout out if you used it.
129 * Display the list of still queued messages in SG mode when existing
133 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
134 * Add xbt_graph_node_get_outedges() [Silas De Munck]
135 * Add xbt_str_from_file(FILE*)
136 * Add xbt_dict_get_key achieving a linear reverse search
137 * Remove the context module
139 Portability report of this version:
140 * Main portability targets:
141 - Linux(debian)/x86/context
142 - Linux(debian)/x86/pthreads
143 - Linux(debian)/amd64/context
144 - Linux(debian)/amd64/pthreads
145 On these, we still have the eratic breakages of gras/pmm and
146 amok/saturate_sg reported in previous version. We still think
147 that the tests are the cause of the fault, not the tested code.
149 - Mac OSX Leopard/x86/context
150 Still false negative in tesh autotesting.
151 Smpi still fails, but this time because readlink does not accept -f
152 Everything seems to work properly beside of that.
155 - AIX version 5.3 (only tested contexts this time)
156 Smpi still fails there because mktemp is not installed.
157 Everything seems to work properly beside of that.
159 I managed to compile it for the first time, but several breakages.
160 Won't delay the release for this exotic platform.
162 * Windows: it's still lagging behind. If you want to help, please
165 Timing report of this version:
166 This version seem to be more than 5% faster than 3.3.1 (on linux
167 64bits with contextes). The gain is less than expected, we are
168 investigating this for next release.
170 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
172 SimGrid (3.3.1) stable; urgency=low
175 * Implement a --cfg-help to show existing configuration variables
176 * Build chain do not require doxygen in maintainer mode
179 * fix a bug on struct sizeof computation, which prevented the
180 exchange of arrays of structs in some conditions
181 - added a regression test about this in datadesc_usage
182 * Allow the exchange of 0-long dynamic vectors.
183 - for that, use -1 as indicator of dynamic size instead of 0
184 - This implied to change any size from unsigned long to long,
185 reducing a bit communication abilities, but I guess that with
186 64bits being quite common, this is more than enough.
187 - This also induce a protocol change, thus bumping network protocol
188 version from 0 to 1 (if we have external users, we have to get
189 clean on that point too ;)
190 - added two regression tests about this in datadesc_usage
191 * Be more verbose when propagating local exceptions
192 This helps debugging.
193 * Display the status of simulated processes when receiving SIGINT in
197 * Allow to control the simulation from a trace file.
198 New functions MSG_action_register() and MSG_action_trace_run()
199 The first one allows to associate a function execution to each
200 kind of action while the second one parses a trace file and
201 triggers the corresponding actions within the system.
202 For now, only a toy example is provided in examples/msg/actions
203 * Add an exemple of process migration in examples/msg/migration
204 * Fix a bug in task exchange which broke MSG_task_get_sender()
205 Add a teshsuite regression test for that.
206 [Bug: if MSG_task_get_sender() is called after sender exit,
208 * Fix a bug which prevented suspend/resume to work properly
209 * Display the status of simulated processes when receiving SIGINT
210 This fixes a regression of v3.3. due to the introduction of SIMIX
211 * Bug fixing in failure management:
212 - trace could not start by a failure at time 0
213 - failure during communications were not working
216 * Add SIMIX_process_set_name() to change the name of the current
217 process in the log messages.
218 * Store smx_hosts in a dict since we only retrieve them by name
219 * Move the configuration infrastructure to surf
222 * Move the configuration infrastructure to surf
225 * Massive internal cleanups:
226 - Store internal structures on processes instead of hosts (allows
227 to have more than one process per host, in addition of being more
229 - Cleanup the initialization/finalization process
230 - Kill a whole bunch of unneeded synchronization:
231 processes run in exclusive manner within the simulator
232 - Move queues from global tables to process data fields
234 - now accept -platform and -hostfile arguments
235 - Pass the right rank value to processes according to the hostfile
236 * Compile the examples by default, and use them as regression tests
237 * Implement MPI_Wtime()
238 * Change the reference speed to a command line option
241 * TCP_gamma can now be specified as command line option using
242 --cfg=TCP_gamma:10000000.0
243 * Change the --surf-path cmd line option into --cfg=path:
246 * Also include strbuff from xbt.h public header
247 * xbt_ex_display(): do not free the exception after displaying
248 This allows to do more with the given exception afterward.
249 Users should call xbt_ex_free() themselves.
253 Portability report of this version:
254 * Main portability targets:
255 - Linux(debian)/x86/context
256 - Linux(debian)/x86/pthreads
257 - Linux(debian)/amd64/context
258 - Linux(debian)/amd64/pthreads
259 These targets fail about 1/10 of times on gras/pmm, but we believe
260 that this is because of the test, not because of simgrid.
261 amok/saturate_sg fails even more rarely, and the test may not be
264 - Mac OSX Leopard/x86/context
265 The test suite still spits tons of errors because some obscure
266 force prevents us from removing the temporary directories
267 arguing that they still contain some metadata I've never heard of.
268 Smpi fails because seq is not installed.
269 Everything seems to work properly beside of that.
272 - AIX version 5.3 (both contexts and pthread)
273 Smpi still fails there because mktemp is not installed.
274 XML inclusions seems rosty on AIX.
276 * Windows: it's still lagging behind. If you want to help, please
279 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
281 SimGrid (3.3) stable; urgency=high
285 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
288 * Introduce the SIMIX module: factorize code between MSG and GRAS.
291 Until now, GRAS were using MSG as an interface to SURF. It was
292 quite difficult because both interface have several differences
293 (MSG channels vs GRAS sockets were the most notable point).
295 This also opens the gate to SMPI (which should occur soon) and speed
296 up simulations by to 40% (even if it were not the main goal).
298 **************************************
299 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
300 **************************************
301 The point is that events occuring at the exact same timestamp are
302 not scheduled in the same order with the old and new version. This
303 may be enough to completely change the execution of simulations in
304 some cases. Sorry for the inconvenience.
306 * Cleanup and upgrade the XML format to push further scalability
307 issues (check http://hal.inria.fr/inria-00256883/ for more info)
309 * Improve the testing infrastructure with tesh. Now a very large part of
310 the code is tested not only by being run but also by checking that the
311 output match an expected output [Mt].
313 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
314 is really less memory-demanding, which should allow you to use
315 larger files in SimGrid [AL].
317 * Inform valgrind about our contextes, so that it becomes usable
318 with the default (and more effecient) version of SimGrid
319 [contributed by Sékou Diakite, many thanks]
322 * Introduce a listener thread in charge of receiving incomming
323 messages from the network. It allows to overlap communication and
324 computation but most notably, it removes some stupid deadlocks due
325 to the fact that so far, a process could not send and receive at
326 the same time. This made most non trivial communication schema
328 * Convert the PIDs from long int to int to match the MSG ones (and
330 * New function: gras_agent_spawn() to launch a new process on
331 current host. Only working in simulation for now. [Mt]
332 * New function: gras_os_hostport() returning a constant form (ie,
333 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
336 * Make the backtrace of exceptions more human readable [Mt]
337 * New module: xbt/str [Mt]
338 a ton of string utility functions (split, join, printf to a newly
339 allocated buffer, trim, etc)
340 * New module: xbt/hash [Mt]
341 SHA1 hashing algorithm (more to come if needed)
342 * New module: xbt/synchro [Mt]
343 synchronization tools (mutex and conditions) working the same way
344 in simulation and in real life (mainly useful for GRAS, but not
346 * New module: xbt/queue [Mt]
347 classical producer/consumer synchronization scheme
348 * xbt_dynar_new_sync() creates a synchronized dynar. All access
349 (using the classical functions will get serialized) [Mt]
350 * Make dictionary internal table dynamic. No need to specify its size
351 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
353 * Make sure the log channels are organized as a tree under windows
354 (because of ANSI C compatibility issue, any channel were child of
358 * Cleaned many thing in surf and fixed a few bugs [AL].
359 * Add a nice command line configuration mechanism to compose models [AL].
360 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
361 the previous one (KCCFLN05). It relies on something that looks like
362 a max-min sharing mechanism but cannot be written as such. A new solver
363 was thus designed [AL].
364 * Add a new solver to lmm. Based on Lagrange optimization and
365 gradient-based descent, it enables to efficiently maximise systems s.a
367 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
369 This solver enables to propose two new network models for TCP Reno and
370 TCP Vegas based on Low's work. These models still need to be fully
371 tested though [Pedro Velho].
374 * Bug fix in SD_simulate. Now the time bound given as argument is
376 * Use the new parallel task model (ptask_L07) as default.
377 * Use the SURF command line configuration mechanism.
378 * 0-size tasks (for synchronization) should now work.
380 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
382 SimGrid (3.2) stable; urgency=high
386 We still experience issues on this platform, but we believe that at
389 GRAS API BREAKAGE (for simplification purpose, sorry):
390 * the gras_msgtype_by_name is not used anymore. Instead of
391 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
392 you can write (and must)
393 gras_msg_send(toserver, "request", &request);
394 - If you still want to pass a gras_msgtype_t to the function (to cache
395 the type and avoid the lookup time), use the gras_msg_send_() variant.
396 - Impacted functions:
397 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
398 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
399 * The callbacks are now expected to return 0 when everything went well
400 (just like the main() function)
402 GRAS new features and improvements:
403 * New module mecanism where user code can use per process globals [Mt]
404 This is similar to gras_userdata_*() functions, but for libraries. It
405 factorize some code developped over and over in the examples and AMOK.
406 It has still to be documented and used (only amok/peermanagement is
408 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
409 loss when they were small enough to fit into the buffer and sent quickly
410 enough so that they can all get received in one shoot.
411 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
412 if not found. Use the *_or_null() variant for the old semantic.
413 * In gras_msg_handle, do not discard messages without callback.
414 They are probably messages to be explicitly awaited later (ie, proofs of
415 mis-synchronization in userland since they are sent before being awaited)
417 * gras_socket_meas_send/recv: semantic changed!
418 The numerical arguments used to be (1) the total amount of data to send
419 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
420 messages. This was need for the fool willing to send more than MAXINT
421 bytes on quite fat pipes.
424 * Do really rename the hostmanagement module to peermanagement. [Mt]
425 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
426 but this is rather new and this was documented in the module
427 documentation (poor excuses, I admit)
428 * Bandwidth measurement semantic changed! This follows the changes to
429 gras_socket_meas_send/recv explained above.
432 * A sequential mode has been added to the workstations. When a workstation
433 is in sequential mode, it can execute only one task, and the other tasks
434 are waiting in a FIFO. [Christophe Thiery]
437 * The KCCFLN05 workstation model now handles parallel tasks. It is the
438 model for SIMDAG. [Christophe Thiery]
439 * Bug fix in the maxmin solver: Some values were close to 0 instead of
440 equal to 0, which caused some bad behaviors in
441 saturated_constraint_set_update. I now use a threshold mechanism like in
445 * When running manually src/testall, you select specific units [Mt]
446 testall is the result of our cunit mecanism, and should replace all
447 the scripty thingy around since bash don't run easily on billware.
449 * A mallocator system has been added. [Christophe Thiery]
450 Mallocators allow you to recycle your unused objects instead of freeing them
451 and allocating new ones.
453 Documentation update:
454 * FAQ reworking + New FAQs:
455 - "Valgrind spits tons of errors!" [Mt]
456 - "How to repport bugs" [Mt]
457 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
458 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
459 - Communication time measurement within MSG [AL]
460 - I experience weird communication times when I change the latency [AL]
463 - an introduction to the framework and to the used communication model
464 - an initiatic tour introducing the most proheminent features:
466 . Lesson 0: Installing GRAS
467 . Lesson 1: Setting up your own project
468 o Part 2: Message passing
469 . Lesson 2: Exchanging simple messages
470 . Lesson 3: Passing arguments to the processes (in SG)
471 . Lesson 4: Attaching callbacks to messages
472 . Lesson 5: Using globals in processes
473 . Lesson 6: Logging informations properly
474 . Lesson 7: Using internal timers
475 . Lesson 8: Handling errors through exceptions
476 . Lesson 9: Exchanging simple data
477 . Lesson 10: Remote Procedure Calling (RPC)
478 . Lesson 11: Explicitely waiting for messages
479 . Recapping of message passing features in GRAS
480 - A HOWTO section containing:
481 o HOWTO design a GRAS application
482 More are due, of course. They will come latter. In the meanwhile, you can
483 check the examples which are still here.
485 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
487 SimGrid (3.1) stable; urgency=high
491 There was a stack corruption somewhere, visible only when optimizing
492 with these versions. [Vince]
495 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
496 module that enabled to play with Directed Acyclic Graphs. It is built
497 directly on top of SURF and provides an API rather close to the old
498 SG. Some old codes using SG are currently under rewrite to check that
499 all needful functions are provided. [Christophe Thiery]
502 * Complete rewrite of the KCCFLN05 workstation model. It is now an
503 extension of the classical CLM03 model that gracefully handles
504 failures. This is now the default model for MSG and GRAS. It doesn't
505 handle parallel tasks yet though. [AL]
506 * Bug fix: Weights were not correctly set in the network part.
507 WARNING: This may have resulted in incorrect results with simulations
508 where there are more than one flow on a given link. [AL]
511 * After a (long ?) discussion on simgrid-devel, we have decided that the
512 convention we had on units was stupid. That is why it has been decided
513 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
514 WARNING : This means that all previous platform files will not work as
515 such with this version! A warning is issued to ask users to update
517 A conversion script can be found in the contrib module of the CVS, under
518 the name contrib/platform_generation/surfxml_update.pl [MQ]
521 * Bug fix: Processes were started in reverse order, wrt deployment file.
522 WARNING: if your code relies on this bug, please fix it. [AL]
523 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
524 being executed on two different locations. [AL]
525 * Bug fix: Failures are now better supported thanks to Derrick's tests
526 (there was many failure situations I hadn't thought of and that weren't
527 correctly handled). [AL]
528 * New function: MSG_host_is_avail indicates you whether a given m_host_t
532 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
533 Exception occurring on server-side are propagated back to client (!).
535 API CHANGE: the callback changed their prototype. Change:
536 int my_handler(gras_socket_t expeditor, void *payload_data) {
538 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
539 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
541 * New! function: gras_msg_handleall to deal with all messages arriving
542 within a given period.
543 * New! function: gras_socket_server_range to get a server socket in a
544 range of port numbers (ease to avoid port number conflicts) [MQ]
545 * New! gras processes display their backtrace when they get a SIGUSR1
546 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
547 Sweet to debug RL processes [MQ]
551 - Do not force experiment sizes to be expressed in kb, or it becomes
552 impossible to measure the latency this way (needs one byte-long tests)
553 WARNING: this changes the amok_bw_* function semantic. [MQ]
554 - Implements the link saturation stuff. [MQ]
555 * Peer management module:
556 New! module factorizing code that we wrote over and over [MQ].
559 * New module: cunit (my jUnit implementation in ansi C) [MQ]
560 - Test units are placed directly into the library code, they get extracted
561 automatically and placed into the src/testall binary.
562 - Convert most of the XBT tests to this system.
563 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
564 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
565 live in the same C code. This required to change a little bit the API
566 of surfxml parsing but shouldn't be an issue for end-users. [AL]
567 * New module: sparse graph structure with basic algorithms (this is work
568 in progress and the API is not considered to be frozen yet). [AL]
569 * Display more information on backtraces: source line & function names are
570 now displayed just like valgrind does (rely on addr2line tool) [MQ]
571 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
572 * Reworked a little bit some #include statements to load only required
573 headers. Some user code that relied on SimGrid to include stdlib or
574 stdio may need to include it by themselves. [AL]
575 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
577 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
578 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
579 but I guess that almost nobody used those parts. [MQ]
581 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
583 SimGrid (3.0.1) stable; urgency=low
586 * Unfortunately, I had missed 5 misnamed functions:
587 xbt_fifo_item_t xbt_fifo_newitem(void);
588 void xbt_fifo_freeitem(xbt_fifo_item_t);
589 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
590 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
591 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
592 They're now deprecated. Please use their new versions:
593 xbt_fifo_item_t xbt_fifo_new_item(void);
594 void xbt_fifo_free_item(xbt_fifo_item_t);
595 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
596 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
597 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
599 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
600 * Documentation: xbt_log module unmercifully reworked [MQ]
601 * Bugfix: there was a problem with the ending of contexts with
602 the pthread backend. It caused some weird deadlock or behavior
603 depending on the pthread implementation. [AL]
604 * Bugfix: get the exceptions raised in the simulator repport where
605 and why they come from when they are not catched in time [AL, MQ]
608 * Bugfix: Do repport the error when two non-connected hosts try to
609 exchange data (Thanks to Flavien for stumbling into this one) [AL]
612 * Add additionnal checkings on communications. Assert that two
613 communicating hosts are connected by a set of links... [AL]
616 * Add additionnal checkings on channel values in communication [AL]
617 * New: MSG_task_get_source to see on which host a task was generated [HC]
618 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
619 the number of tasks waiting to be received on channel and sent
621 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
622 waits for the first task coming from a given host.. [AL]
624 GRAS new functionnalities: [MQ]
625 * Enhance the parsing macro to allow the size of multidimentional objects
626 to be given thru annotations.
627 * New example (and documentation): Matrix Multiplication a la RPC
628 (as when I was young!) and fix a bunch of bugs found on the way.
630 GRAS performance improvements: [MQ]
632 * Reduce the amount of cbps creation/destruction by making it static to
633 datadesc_send/recv() and using a (newly created) cbps_reset (based on
636 * Change libdata to a set so that we can search for stuff by ID (and thus
637 reduce the insane amount of dict lookups)
640 * Actually implement gras_datadesc_copy() so that we don't have to mimick
641 RL communication on top of SG since it's so uneffective.
642 It may also be used for inter-thread communication in RL, one day.
643 * Use gras_datadesc_copy() to exchange messages on top of SG
645 - improve message exchange performance on top of SG
646 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
647 * Don't exchange on the network the size of the used part of buffer,
648 instead, specify the possible buffer size to read().
650 - reduces the amount of read/write calls (one pair per exchange)
651 - reduces the amount of exchanged data (the size)
652 - allows to retrieve all arrived data on receiver side, if we don't need
653 it right now (subsequent read will peek the buffer)
654 - allows the receiver to proceed with the begining of the stream before
655 everything is arrived
656 - make it possible to build an iov transport (using readv/writev)
658 - take care of the data with non-stable storage (like stacked data),
660 * If possible, TCP send uses vector I/O (when writev() is here)
661 - Don't use it for receive since we send data sizes and data on the
662 same stream, so we wouldn't be able to chain large amount of chunks
663 before having to flush the stuff to read the size.
664 * Rework the transport plugin mecanism to simplify it and reduce the
665 amount of pointer dereferencement when searching for the right function
668 * I guess that now, we do almost as few system calls as possible while
669 doing as few data copy as possible.
671 To improve it further, we could try to send all the sizes first and then
672 all the data (to use iov on receiving size), but it's only a partial
673 solution: when you have 2 dimensional data, the sizes of the second
674 dimension is data of the first dimension, so you need 3 streams.
676 I'm not sure the potential performance gains justify the coding burden.
678 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
680 SimGrid (3.00) stable; urgency=high
683 * New! Give the possibility to hijack the surf parser and thus bypass
684 MSG_create_environment and MSG_launch_application. Have a look at
685 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
687 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
689 SimGrid (2.96) unstable; urgency=low
694 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
695 This deprecates the xbt_error_t mecanisms.
696 It modifies (simplifies) all XBT and GRAS API.
697 MSG API keeps unchanged (exceptions raised by XBT are catched from
698 within MSG and masked with existing error handling facilities)
701 * New! Add a FATPIPE model. [AL]
702 * New! Add a parallel task model. [AL]
703 * New! Add automatically a loopback interface (in the default
704 network model) if none was precised.
707 * Bugfix: MSG_process_resume now works with the current running process.
709 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
710 * Modification of MSG_task_get_compute_duration. Once a task has been
711 processed, the value returned by this function is now equal to 0. [AL]
712 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
713 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
714 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
715 of a m_task. For now, MSG_task_cancel only works with computation
717 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
718 of the processor (in Mflop/s) regardless of the current load on the
720 * API Change: use proper naming convention for MSG_getClock and
721 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
723 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
724 This function changes the priority of a computation task. This priority
725 doesn't affect the transfer rate. A priority of 2 will make a task
726 receive two times more cpu power than the other ones. This function
727 has been added to suit the needs of Nguyen The Loc and hasn't been that
728 much tested yet. So if it fails, please report it and send me your code.
730 * API Change: removed all functions and types that were marked "deprecated"
731 since many months. Renamed MSG_global_init_args to MSG_global_init.
733 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
735 SimGrid (2.95) unstable; urgency=low
738 * Steal some nice code to GNU pth to fix context detection and usage [AL]
739 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
740 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
743 * Bugfix: Allow absolute paths for platform description files [MQ]
744 * Bugfix: do free the variables after use. Leads to drastic performance
746 * Implement max_duration (ie, timeouts) on resources [AL]
749 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
751 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
752 the needed support (timeouts) [AL]
755 * Implement measurement sockets. You can now get the bandwidth between two
756 hosts thanks to AMOK (see below). [MQ]
757 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
758 dynar over the network (yeah) [MQ]
759 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
760 * simple/static token-ring example. [Alexandre Colucci and MQ]
761 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
765 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
766 type parsing. "short" and "long" modifiers were also ignored; other
767 modifier (such as reference level) are still ignored. [MQ]
768 * Embeed the buffer size within the buffer itself on SG. [MQ]
769 That way, send() are atomic and cannot get intermixed anymore (at least
770 the ones which are less than 100k; bigger messages still have the issue)
771 * Array size pushed by the field, not by the field type (or each
772 and every long int will push stuff to the cbps) [MQ]
773 * use select() to sleep since it allows to portably sleep less than one
776 GRAS (minor cleanups)
777 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
780 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
781 * type category 'ignored' killed as it was never used and were difficult
783 * whether a type can cycle or not is now a flag, leaving room for more
784 flags (as "ignored", if we feel the need one day ;)
785 * Rename raw sockets to measurement sockets since "raw" has another
786 meaning in networking community.
789 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
790 and offers features not belonging to GRAS but that most applications
791 need. One day, it may be a set of plugins loadable at runtime.
792 * New module: bandwidth
793 bandwidth measurement between arbitrary nodes running this module. [MQ]
795 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
797 SimGrid (2.94) unstable; urgency=low
799 The first beta release of SimGrid 3 !
803 * Update the main page and the FAQ. Adding references to gforge.
806 * Add a gras_os_getpid function.
809 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
810 * Extend the logs so that they also print PID, hostname, date, ... if
812 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
813 and kill the old version which were in testsuite/
814 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
818 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
819 for users. Instead, each programming environment (GRAS, MSG,...) use it
820 when needed to provide such a feature to users.
821 Don't shortcut the mecanism or you will also shortcut the virtualization
822 you need on the simulator.
826 * Cleanups in configury with regard to compile optimization/warning flags.
827 Also add -fno-loop-optimize to any powerpc since it's the optimization
828 killing gcc (< 3.4.0).
829 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
830 needed by MSG examples complications
831 * Borrow configury beautifications from PHP
834 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
835 warning (thanks loris for stumbling into this one).
836 * Bugfix: stop loading private headers (gras_config.h) from the public
840 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
841 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
842 RL would imply a DNS resolver, which is *hard* to do in a portable way
843 (and therefore delayed).
844 * Implement a real timer mecanism and use it in timing macros. This allows
845 to avoid rounding errors and get a 0.000005 sec precision in timing
846 macros. While I was at it, various cleanups:
847 - allow to declare more than one timed section per file (fix a stupid bug)
848 - move some private declaration to the right place
849 - merge conditional execution and timing macros into emulation module
850 - document the module
851 - make sure the module cleanups its mess on gras_exit
852 * Documentation improvements:
853 - (new) how to compile applications using GRAS
854 - (new) emulation support (timing macros)
856 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
858 SimGrid (2.93) unstable; urgency=low
860 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
863 - Use Paje properly where used. Still to be sanitized properly.
864 - Portability fix: Add an implementation of the contexts using pthread
868 - Add xbt_procname(): returns the name of the current process.
869 Use it to show the current process's name in all logging.
871 - fix detection of older flex version and the reaction, since we do
872 depend on modern ones (we use lex_destroy)
873 - Better separation of SG and RL in the libs: remove all simulation code
874 from libgras. As a result, this lib is now only 200k when stripped.
875 Some of the xbt modules may also be duplicated (two sets and such) and
876 should be cleaned/killed before SG3.
877 - Insist on using xlC on AIX because of weird problems involving gcc there.
878 - Cleanup the make remote stuff. This is now done by scripts
879 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
880 mainly for our private use, but we're working on changing them to user
883 - Bugfix: flush the socket on close only if there is some *output*.
884 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
886 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
889 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
891 SimGrid (2.92) unstable; urgency=low
893 Alpha 3 on the path to SimGrid 3
897 - New! First try of benchmarking macros.
898 - New! First try so that gras_stub_generator generate deployment and
899 remote compilation helpers.
901 - Bugfix: Initialization fix in msg_test.
905 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
907 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
909 - API Change: gras_os_sleep to take the amount of seconds as a double.
910 Accepting an int was error prone since it was the only location where
911 seconds were coded as such. It leaded to damn rounding errors.
912 - Bugfix: Hard to belive that timers ever worked before this.
914 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
916 SimGrid (2.91) unstable; urgency=low
918 Alpha 2 on the path to SimGrid 3
922 - Bug fix in the lmm_solver.
924 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
925 through the function MSG_paje_output.
926 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
927 - It is possible to bound the rate of a communication in MSG with
928 MSG_task_put_bounded() (was already in the previous version but I had forgotten
929 to write it in the changelog).
930 - Bug fix to let GRAS run on top of MSG until we move it directly on top
935 - Various cleanups to the autotools stuff
936 - Begin to move Gras examples to examples/gras/
937 - Let make distcheck work again (yeah!)
939 - documentation overhauled using doxygen.
940 gtk-doc-tools is dead in SimGrid now.
941 - Automatically extract all existing logging categories, and add the list
942 to the documentation (long standing one, to say the less)
944 - Cleanup the known architecture table. Reorder the entries to group what
945 should be, and use a more consistent naming scheme.
946 (some of the test dataset are still to be regenerated)
947 - New! Allow library to register globals on each process just as userdata
949 This is implemented using a xbt_dict and not a xbt_set, so we loose the
950 lookup time (for now).
951 Use it in msg and trp.
952 This cleans a lot the internals and helps enforcing privacy of the
953 headers between the gras components.
954 - New! Add a timer mechanism, not unlike cron(8) and at(1).
955 - Bugfix: gras_os_time was delirious in RL.
956 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
958 - Reenable GRAS now that it works.
960 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
962 SimGrid (2.90) unstable; urgency=low
964 Alpha 1 on the path to SimGrid 3
966 * It is a long time since the last release of SimGrid. I'm sorry about
967 that but as I had told you, I was rewriting a lot of things. I apologize
968 to those who had been reporting bugs to me and that I had not answered.
969 If your bug is still in the new version, please tell me. Here is a
970 summary of the main changes.
972 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
973 lead by Martin Quinson. As a consequence SimGrid gains a lot in
974 portability, speed, and a lot more but you'll figure it out later.
975 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
976 I wanted to release the new MSG as soon as possible and I have
977 broken GRAS, which is the reason why, for now, only MSG is fully
978 functional. A laconic description of these projects is available
979 in the documentation.
981 * REVOLUTION 2: I have removed SG and I am now using a new simulation
982 kernel optimized for our needs (called SURF but only the developers
983 should use it). Hence, MSG is now roughly 30 times faster and I think
984 that by rewriting a little bit MSG, I could event speed it up a little
985 bit more. Beside the gain in speed, it is also much easier to encode a
986 new platform model with SURF than it was with SG. More to come...
988 * REVOLUTION 3: I have tried to change a little as possible the API of
989 MSG but a few things really had to disappear. The main differences
990 with the previous version are :
991 1) no more m_links_t and the corresponding functions. Platforms are
992 directly read from a XML description and cannot be hard-coded
993 anymore. The same format is used for application deployment
994 description. The new format is described in the documentation.
995 Have a look in tools/platform_generation. There is a tiny script
996 that converts from the old platform format to the new one. Concerning
997 the application deployment format, parsing the old one is tricky.
998 I think most of you should however be able to convert your files. If
999 it is really an issue, I can write a C code that does the conversion.
1001 2) the toolbox tbx does not exist anymore. We now have a library
1002 with much more data-structures but without the hash-tables (we have
1003 dictionaries that are much faster).
1005 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
1007 *****************************************************************************
1008 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
1009 * don't feel like converting the oldies. (Mt) *
1010 *****************************************************************************
1013 Version 2.90: "the long awaited one"
1014 - Finished rewriting and debugging MSG. Rewrote the documentation.
1015 - disable GRAS for now since it needs to be ported to the newest SG
1018 - Finish the port to windows (using mingw32 for cross-compile)
1021 - Main loop and datastructures of SURF. A cpu resource object is
1022 functional. Surf can thus be used to create cpu's with variable
1023 performance on which you can execute some actions.
1025 2004-11-15 Martin Quinson
1026 - Port to ARM. Simply added the alignment and size descriptions. Should
1027 work, but the ARM machines are so slow that I didn't had the opportunity
1028 to 'make check' over there yet.
1030 2004-11-15 Arnaud Legrand
1031 - Trace manager now written. It uses a heap structure and is therefore
1032 expected to be efficient. It may however be speeded up (particularly
1033 when many events occur at the same date) by using red and black
1034 trees. One day maybe...
1035 - Max-min linear system solver written. It uses a sparse matrix
1036 structure taking advantage of its expected use. Most operations are
1037 O(1) and free/calloc are called as few as possible. The computation of
1038 the minimum could however be improved by using a red and black tree
1041 2004-11-03 Arnaud Legrand
1042 - Rename every gras_* function that was in xbt/ to its xbt_
1044 - Add a heap and a doubly-linked list to xbt
1045 - Added a dichotomy to the dictionaries. make check works as well before
1046 so I assume that the patch is correct. I do not know however if things
1047 run effectively faster than before now. :)
1049 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
1050 SimGrid, and the version number is bumped to 2.x
1052 2004-10-29 Martin Quinson
1053 - Introduction of the remote errors.
1054 They are the result of a RMI/RPC on the remote machine.
1055 ErrCodes being scalar values, you can't get the host on which those
1056 errors did happen. Extending the error mechanism as in Gnome is possible.
1057 No idea yet whether it is a good idea.
1059 2004-10-28 Martin Quinson
1060 - Interface revolution: the Starred Structure Eradication.
1061 I used to do typedef struct {} toto_t; and then handle *toto_t.
1062 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
1063 - ???_t is a valid type (builded with typedef)
1064 - s_toto_t is a structure (access to fields with .)
1065 - s_toto is a structure needing 'struct' keyword to be used
1066 - e_toto_t is an enum
1067 - toto_t is an 'object' (struct*)
1069 typedef struct s_toto {} s_toto_t, *toto_t;
1070 typedef enum {} e_toto_t;
1071 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
1072 s_toto_t) is private.
1074 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
1075 so that it can set the variable to NULL. It was so for dicts and sets,
1076 it changed for dynars.
1078 - Fix a bunch of memleaks in dict_remove
1079 - Fix a bug in sg/server_socket opening: it failed all the time.
1081 2004-10-07 Martin Quinson
1082 - Speed up dynar lookup operation a bit.
1084 gras_dynar_get is dead.
1086 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
1087 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
1088 (which gives you the address of the stored data).
1090 gras_dynar_get_as is an helpful macro which allows you to retrieve a
1091 copy of the data using an affectation to do the job and not a memcpy.
1093 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
1094 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
1096 It does not really speedup the dynar test because they are
1097 setting elements all the time (and look them seldom). But the dict does
1098 far more lookup than setting.
1100 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
1102 2004-10-05 Martin Quinson
1103 - Allow to (en/dis)able the cycle detection at run time.
1105 Whether we should check for cycle or not is now a property of each
1106 datatype. When you think there may be some cycle, use datadesc_cycle_set.
1107 datadesc_cycle_unset allow to remove this property when previously set.
1109 Note that the cycle detection is off by default since it impacts the
1110 performance. Watch the data you feed GRAS with ;)
1112 This property is hereditary. Any element embedded in a structure having it
1113 set have it set for the time of this data exchange.
1115 You should set it both on sender and receiver side. If you don't set it on
1116 sender side, it will enter an endless loop. If you forget on receiver
1117 side, the cycles won't be recreated after communication.
1119 - Header reorganization.
1120 Kill gras_private.h, each submodule must load the headers it needs.
1122 2004-10-04 Martin Quinson
1123 - Interface revolution: do not try to survive to malloc failure.
1125 Now, gras_malloc and friends call gras_abort() on failure.
1126 As a conclusion, malloc_error is not a valid error anymore, and all
1127 functions for which it was the only gras_error_t return value are
1128 changed. They now return void, or there result directly.
1129 This simplify the API a lot.
1131 2004-09-29 Martin Quinson
1132 - Re-enable raw sockets.
1133 Created by gras_socket_{client,server}_ext;
1134 Used with gras_raw_{send,recv}
1137 It should allow to kill the last bits of gras first version soon.
1139 This is not completely satisfactory yet (duplicate code with
1140 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
1143 - Simplify transport plugin (internal) interface by not passing any
1144 argument to _server and _client, but embedding them in the socket
1147 2004-09-28 Martin Quinson
1148 - Finish the port to AIX.
1149 autoconf was my problem (segfault within the malloc replacement
1150 function. No idea why)
1152 2004-09-16 Martin Quinson
1153 - Fix some size_t madness on 64bit architectures.
1155 2004-09-08 Martin Quinson
1156 - Reduce the number of system headers loaded, overload some more system
1157 calls (such as malloc to cast the result of the system one, and work
1159 - Fix and reintroduce the config support
1161 2004-09-07 Martin Quinson
1162 - Source code reorganization to allow Arnaud to surf all over there.
1163 - Allow to document the logging categories.
1164 - Remove all uppercase from logging categories and useless cleanup in names.
1166 2004-08-18 Martin Quinson
1167 Version 0.6.2 (protocol not changed; API changed)
1168 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
1169 gras_error_t), and NULL when not found. Functions expecting a msgtype
1170 as argument (msg_wait; msg_send) deal with NULL argument by providing a
1171 hopefully usefull message.
1172 - Portability to prehistoric sparcs again
1174 2004-08-17 Martin Quinson
1175 Version 0.6.1 (protocol not changed; ABI not changed)
1176 - prealloc some buffers to speed things up
1178 2004-08-11 Martin Quinson
1179 Version 0.6 (protocol not changed; ABI expended)
1180 - The parsing macro can deal with the references, provided that you add
1181 the relevant annotations (using GRAS_ANNOTE(size,field_name))
1183 2004-08-09 Martin Quinson
1184 Version 0.5 (protocol not changed; ABI changed)
1185 - Allow to off turn the cycle detection code in data exchange at
1186 compilation time. It should be at run time, but I'm short of time (and
1187 the config stuff is still broken). That way, we keep dict out of the
1188 critical path, which is good because the performance is poor:
1189 - search not dichotomial yet
1190 - dynar give no way to access their content and memcpy everytime
1191 - In composed data description (struct, ref and so on), stop foolness of
1192 keeping the subtype's ID, but store the type itself. This keeps sets out
1193 of the critical path, which is good since they rely on dynar and
1194 dictionnaries. The only loose of that is that we cannot detect the
1195 redeclaration of a structure/union with another content (but I'm not sure
1196 the code detected well this error before anyway). We still can detect
1197 the redefinition discrepancy for the other types.
1198 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
1199 it breaks the code because of type-punning used all over the place).
1200 This breaks on all non-gcc architectures (for now).
1202 All those changes (plus the buffer of last time) allow me to gain 2 order
1203 of magnitude on cruel tests consisting of 800000 array of integers on two
1204 level of a hierarchical structure (200 secondes -> 4 secondes)
1207 - the selector of reference must now return the type it points to, not
1208 the ID of this type.
1210 2004-08-06 Martin Quinson
1211 Version 0.4 (protocol changed; ABI not changed)
1212 - Allow to pass --gras-log argument to processes in simulation mode. Really.
1213 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
1214 - Implement a buffer transport, and use it by default (it relies on tcp in
1215 real life and on sg in simulation).
1216 That's a bit hackish since I had a new field to the structure to store
1217 its data without interfering with the subtype ones. Inheritance
1218 is tricky in C. And that's a kind of reverse inheritance with one class
1219 derivating two classes. Or maybe a game with java interfaces. Anyway,
1220 that's damn hard in C (at least).
1221 Moreover, I got tired while trying to ensure plugin separation and
1222 genericity in SG mode. MSG wants me to do weird things, so let's go for
1223 cruel hacks (temporarily of course ;).
1224 See comment in transport_private.h:71
1225 - do not include all the _interface headers in private but in the files
1226 which really need them (to cut the compilation time when they are
1229 2004-07-26 Martin Quinson
1230 Version 0.3 (protocol not changed; ABI changed)
1231 - Major overhault of the datadesc interface to simplify it:
1232 - shorted the function names:
1233 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
1234 - add a trivial way to push/pop integers into the cbps without malloc.
1235 This allows to make really generic sub_type description, which simply
1236 pop their size of the stack.
1237 - add a function gras_datadesc_ref_pop_arr() which does what users want
1238 most of the time: Declare a dynamic array (which pops its size of the
1239 stack) and declare a reference to it. Poor name, but anyway.
1240 - kill the post-send callback, add a post-receive one
1242 2004-07-23 Martin Quinson
1243 Version 0.2 (protocol changed; ABI changed)
1244 - add some testing for cpbs in the test cases, and fix some more bugs.
1245 This invalidate again the little64 data file, since I cannot regenerate
1247 - remove an awfull optimization in the logging stuff, allowing me to:
1248 - understand it again
1249 - learn gcc how to check that the argument match the provided format
1250 - fix all errors revealed by gcc after that
1251 - internal keys of dict are not \0 terminated. Deal with it properly in
1252 loggings instead of segfaulting when the user want to see the logs :-/
1254 2004-07-22 Martin Quinson
1255 - Fix some stupid bug preventing cbps (callback postit) from working
1257 2004-07-21 Martin Quinson
1258 - Some documentation cleanups
1259 - remove the useless last argument of msgtype_declare
1260 - rename the Virtu functions to fit into the 'os' namespace
1261 - move headers src/include -> src/include/gras/ and stop fooling with
1262 gras -> . symbolic link
1263 - make distcheck is now successful
1265 2004-07-19 Martin Quinson
1267 - Build shared library also
1268 - Install html doc to the right location
1269 - stop removing maintainer files in make clean
1270 - build tests only on make check
1272 2004-07-13 Martin Quinson
1274 - No major issue in previous version => change versionning schema
1275 - Re-enable little64 convertion test now that Abdou kindly regenerated the
1276 corresponding dataset.
1278 2004-07-11 Martin Quinson
1280 - Get it working with any kind of structure (we can compute the padding
1281 bytes remotely for all the architectures I have access to)
1282 - Implement the structure parsing macro (still not quite robust/complete)
1283 - Improvement to the remote testing toysuite
1285 2004-07-10 Martin Quinson
1286 [autoconf mechanism]
1287 - get ride of a bunch of deprecated macros
1288 - actually run the test for two-compliment, not only compile it :-/
1289 - test whether the structures get packed (and bail out if yes. Damn.
1290 Alignment is a serious matter)
1291 - test whether the structures get compacted (but respecting the alignment
1292 constraints of each types)
1293 - test whether the array fields of structures can straddle alignment boundaries
1295 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
1296 (took me 2 hours to find that bug, looking at the wrong place)
1297 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
1298 before sending/receiving and are used to compute the offsets of fields
1299 - Given that padding size depend even on compiler options, keep track of
1300 alignment and aligned_size only for the current architecture. Not a big
1301 deal since we send structure fields one after the other (seems
1303 - Add the datastructure used for IEEE paper by the PBIO guys to the test
1304 program, let it work on linux/gcc/little32. portability todo.
1306 2004-07-08 Martin Quinson
1307 - import and improve remote compilation support from FAST
1308 - make sure make check works on half a dozen of machines out there
1310 2004-07-07 Martin Quinson
1311 Let's say it's version 0.0.3 ;)
1312 - Implement conversions (yuhu!)
1313 - Let it work on solaris (beside conversion, of course)
1314 - Stupid me, using rand() to generate the conversion datatests in not wise.
1316 2004-07-06 Martin Quinson
1317 - Let make dist work, since I'm gonna need it to compile on remote hosts
1318 - Let Tests/datadesc_usage write the architecture on which the file was
1319 generated as first byte.
1320 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
1321 architecture descriptions.
1322 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
1323 on those architectures.
1324 - Optimization: send/recv array of scalar in one shoot
1326 2004-07-05 Martin Quinson
1327 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
1329 - Plug a whole bunch of memleaks
1330 - each process now have to call gras_{init,exit}. One day, their log
1331 settings will be separated
1332 - Continue the code factorisation between SG, RL and common in Transport.
1334 2004-07-04 Martin Quinson
1336 - Redistribution between SG and RL.
1337 We wanna have to accept in SG, so move accepted related parts of RL in
1338 the common part. (more precisely, the dynar of all known sockets is no
1339 more a static in transport.c, but part of the process_data)
1341 [gras_stub_generator]
1342 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
1344 2004-07-03 Martin Quinson
1345 - Create a new log channel tbx containing dict, set, log, dynar (to shut
1346 them all up in one shot)
1348 - Fix the ugly case of reference to dynamic array.
1349 - New (semi-public) function gras_datadesc_size to allow the messaging
1350 layer to malloc the needed space for the buffer.
1352 - gras_socket_close now expect the socket to close (and not its address to
1353 put NULL in it after it). This is because the socket passed to handlers
1354 is one of their argument (=> not writable).
1356 - propagate the interface cleanup from last week in datadesc, ie remove a
1357 superfluous level of indirection. User pass adress of variable
1358 containing data (both when sending and receiving), and not of a variable
1359 being a pointer to the data. Let's say that I like it better ;)
1360 The price for that is constructs like "int msg=*(int*)payload" in
1361 handlers, but it's a fine price, IMHO.
1363 - Let it work in RL (yuhu)
1365 2004-06-21 Martin Quinson
1367 - porting SG plugin and SG select to new standards (works almost).
1368 - plug memleaks and fix bugs around.
1371 - cleanup the prototype of data recv and force users to specify when they
1372 want to handle references to objects. Test case working even for cycles.
1373 - plug memleaks. Valgrind is perfectly ok with this.
1375 2004-06-12 Martin Quinson
1377 - cleanup the separation between plugin and main code in plugin creation
1379 2004-06-11 Martin Quinson
1381 - Reput hook for raw sockets, needed for BW experiments
1382 - kill a few lines of dead code
1383 [Data description] Interface cleanup
1384 - gras_datadesc_by_name returns the searched type or NULL.
1385 That way, no variable is needed to use a type desc once, which makes
1387 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
1388 two parameters were strings (field name, type name), leading to
1390 [Dicos] Interface cleanup
1391 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
1392 This is consistant with the dynar API.
1394 2004-04-21 Martin Quinson
1396 - Porting to new standards.
1398 - interface cleanup.
1399 There is no bag anymore, no need to take extra provision to mask the
1400 pointers behind "ID".
1401 Better splitup of functions between files create/exchange/convert.
1402 This is still a bit artificial since convert and receive are so
1403 interleaved, but anyway.
1405 - add a queued message list to procdata (the ones not matching criteria
1407 - factorize some more code between SG and RL wrt procdata
1409 - use gras_exit in example to track memleaks
1410 - get rid of gs_example now that GS is properly integrated into gras
1411 - update run_test to integrate the lastest tests (datadesc)
1413 - rename WARNINGn macros to WARNn since it prooved error-prone
1415 2004-04-19 Martin Quinson
1417 - register init/exit functions within gras module mechanism
1418 - send/receive function.
1419 Convertion is not implemented, but short-cutted if not needed.
1420 struct/array elements are sent one by one (instead of block-wise), but
1421 nobody really cares (yet). Get a prototype before optimizing.
1422 - tests (using a file socket) for DD send/receive on:
1423 - base types: int, float
1424 - array: fixed size, string (ie ref to dynamic string)
1425 - structure: homogeneous, heterogeneous
1426 - chained list, graph with cycle
1427 Believe it or not, valgrind is not too unhappy with the results. The
1428 cycle happily segfaults, but the others are ok. And I'm sick of pointers
1432 - Bugfix when using a filename explicitely (instead of '-')
1434 2004-04-09 Martin Quinson
1436 - factorize more code between RL and SG in socket creation
1437 - Complete the implementation and tests of:
1439 o file (only in RL, and mainly for debugging)
1441 I lost 3 days to design a portable address resolver, and then decided
1442 that the prototype mainly have to run on my box.
1443 Addressing portability too early may be like optimizing too early :-/
1445 - use gras_init in the Tests instead of the crappy parse_log_opt
1446 (the latter function is removed)
1447 [Conditional execution]
1448 - New functions: gras_if_RL/gras_if_SG (basic support for this)
1449 [Code reorganisation]
1450 - Get rid of libgrasutils.a since it makes more trouble than it solves.
1451 Build examples against the RL library, since there is no way to disable
1452 its creation for now.
1454 For information, the beginning of coding on GRAS was back in june
1455 2003. I guess that every line has been rewritten at least twice since