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_task_dump() for debuging display
58 * new function SD_daxload(char*) to load a DAX file
59 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
62 * GTNetS wrappers should now be usable again (and betterly tested too)
63 * Fix a major regression from 3.2 where the timeout provided to
64 MSG_task_put_with_timeout() was used as absolute time before which
65 the comm should be done.
66 * Fix a source-level compatibility glitch from 3.2: after defining
67 MSG_USE_DEPRECATED, you can use the old name
68 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
69 * Allow to compile from the SVN with automake 1.11
70 * Fix some problems when using the "start_time" tag in deployment XMLs.
72 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
74 SimGrid (3.3.3) stable; urgency=low
76 The "Need for Speed" release.
78 The timings done to validate the 3.3.2 were faulty.
79 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
81 The problem was a conversion from a manually handled vector to
82 xbt_dynar_t on the critical path.
83 xbt_dynar_foreach calls functions, inducing stack management crap.
85 We inlined these functions and xbt_dynar_foreach is now breath taking.
86 We also inlined xbt_swag_belong on the way.
88 Here are some approximate speedup measurements (on master/slaves
89 simulations lasting between 10s and 20s each):
90 3.3.1 -> 3.3.2: about same performance
91 3.3.2 -> 3.3.3: 40% speedup
92 3.3.1 -> 3.3.3: 40% speedup
93 3.3.1 with inline patch -> 3.3.3: 30% speedup
95 Our reading is that the refactoring which occurred in 3.3.2 made us
96 suffer much more from the xbt_dynar_foreach low performance, but
97 once we solved this, this refactoring proved to be very performance
98 effective. From the 40% speedup, somehow, 10% are due to the
99 inlining and 30% to the refactoring.
101 That's a pitty that gcc cannot inline functions placed in other files
102 alone. We have to choose between:
103 - break the encapsulation (by putting private data structures and
104 accessors in headers files to help gcc)
105 - live with low performance
106 - switch to a decent compiler such as icc (not quite possible).
108 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
110 SimGrid (3.3.2) stable; urgency=low
112 The "Simplicity does not preceed complexity, but follows it" release.
114 The main contributors of this release were (lexical order):
115 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
118 * Extract the routing logic into its own object.
119 (was dupplicated in network.c and workstation_LV07.c;
120 Allows to implement other ways of storing that info)
121 => kill now useless network_card concept
122 - Use dynar to represent routes (instead of void** + int*)
123 - kill link_set (use surf_network_model->resource_set instead)
124 - Add a command-line option to choose the routing schema to use
125 - Add three new models:
126 * Floyd (shortest path computed at initialization)
127 * Dijikstra (shortest path recomputed all the time)
128 * Cached Dijikstra (shortest path computed on need)
129 All these models where contributed by Silas De Munck, and are
130 described in his ICCS09 paper.
132 * Simplify model declaration
133 (less redirections, less function to write when defining a model)
134 - Factorize stuff between models:
137 surf_model_resource_set(model)
138 surf_model_resource_by_name(model, name)
139 - Unify the types of models in s_surf_model_t (using an union)
140 - Embeed fields of common_public directly into s_surf_model_t
141 - Rename model methods:
142 action_free ~> action_unref
143 action_change_state ~> action_state_set
144 action_get_state ~> action_state_get
145 - Change model methods into functions :
146 (model)->common_public->action_use ~> surf_action_ref
148 * Implement a generic resource; use it as ancestor to specific ones
149 (allows to kill duplicated code in models)
150 Drawback: timer command don't need no name nor properties;
151 workstation_CLM03 don't need no properties
152 (but I guess we can live with those few bytes wasted)
154 * Improve the action object model
155 - implement a constructor avoiding dupplicated code about field
156 initialization in generic_action part.
158 * Kill the SDP model: it has an external dependency, is deprecated
159 in flavor of modern lmm models, and didn't compile since a while
162 * Relocation of the context module from XBT to SIMIX.
163 (the context were decoupled from the simix processes, duplicating a lot of code)
164 => a lot of code was factorized
165 - less overhead is introduced during scheduling
166 - simpler API for the context factory
167 - the logic for process creation,destruction and manipulation was simplified
168 * Simplification of the s_smx_process_t data structure.
169 => accesing the simix level data associated to a process is faster now,
170 and the code is a lot more readable.
173 * Implement some more MPI primitives:
174 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
175 -implementation: Bcast: flat or 2-ary tree (default),
178 Allreduce: Reduce then Bcast
179 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
180 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
181 Alltoallv: flat tree, like ompi
183 * Add support for optimized collectives (Bcast is now binomial by default)
184 * Port smpirun and smpicc to OS X
187 * Kill SD_link_get_properties: hard to maintain and makes very little sense
188 Shout out if you used it.
191 * Display the list of still queued messages in SG mode when existing
195 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
196 * Add xbt_graph_node_get_outedges() [Silas De Munck]
197 * Add xbt_str_from_file(FILE*)
198 * Add xbt_dict_get_key achieving a linear reverse search
199 * Remove the context module
201 Portability report of this version:
202 * Main portability targets:
203 - Linux(debian)/x86/context
204 - Linux(debian)/x86/pthreads
205 - Linux(debian)/amd64/context
206 - Linux(debian)/amd64/pthreads
207 On these, we still have the eratic breakages of gras/pmm and
208 amok/saturate_sg reported in previous version. We still think
209 that the tests are the cause of the fault, not the tested code.
211 - Mac OSX Leopard/x86/context
212 Still false negative in tesh autotesting.
213 Smpi still fails, but this time because readlink does not accept -f
214 Everything seems to work properly beside of that.
217 - AIX version 5.3 (only tested contexts this time)
218 Smpi still fails there because mktemp is not installed.
219 Everything seems to work properly beside of that.
221 I managed to compile it for the first time, but several breakages.
222 Won't delay the release for this exotic platform.
224 * Windows: it's still lagging behind. If you want to help, please
227 Timing report of this version:
228 This version seem to be more than 5% faster than 3.3.1 (on linux
229 64bits with contextes). The gain is less than expected, we are
230 investigating this for next release.
232 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
234 SimGrid (3.3.1) stable; urgency=low
237 * Implement a --cfg-help to show existing configuration variables
238 * Build chain do not require doxygen in maintainer mode
241 * fix a bug on struct sizeof computation, which prevented the
242 exchange of arrays of structs in some conditions
243 - added a regression test about this in datadesc_usage
244 * Allow the exchange of 0-long dynamic vectors.
245 - for that, use -1 as indicator of dynamic size instead of 0
246 - This implied to change any size from unsigned long to long,
247 reducing a bit communication abilities, but I guess that with
248 64bits being quite common, this is more than enough.
249 - This also induce a protocol change, thus bumping network protocol
250 version from 0 to 1 (if we have external users, we have to get
251 clean on that point too ;)
252 - added two regression tests about this in datadesc_usage
253 * Be more verbose when propagating local exceptions
254 This helps debugging.
255 * Display the status of simulated processes when receiving SIGINT in
259 * Allow to control the simulation from a trace file.
260 New functions MSG_action_register() and MSG_action_trace_run()
261 The first one allows to associate a function execution to each
262 kind of action while the second one parses a trace file and
263 triggers the corresponding actions within the system.
264 For now, only a toy example is provided in examples/msg/actions
265 * Add an exemple of process migration in examples/msg/migration
266 * Fix a bug in task exchange which broke MSG_task_get_sender()
267 Add a teshsuite regression test for that.
268 [Bug: if MSG_task_get_sender() is called after sender exit,
270 * Fix a bug which prevented suspend/resume to work properly
271 * Display the status of simulated processes when receiving SIGINT
272 This fixes a regression of v3.3. due to the introduction of SIMIX
273 * Bug fixing in failure management:
274 - trace could not start by a failure at time 0
275 - failure during communications were not working
278 * Add SIMIX_process_set_name() to change the name of the current
279 process in the log messages.
280 * Store smx_hosts in a dict since we only retrieve them by name
281 * Move the configuration infrastructure to surf
284 * Move the configuration infrastructure to surf
287 * Massive internal cleanups:
288 - Store internal structures on processes instead of hosts (allows
289 to have more than one process per host, in addition of being more
291 - Cleanup the initialization/finalization process
292 - Kill a whole bunch of unneeded synchronization:
293 processes run in exclusive manner within the simulator
294 - Move queues from global tables to process data fields
296 - now accept -platform and -hostfile arguments
297 - Pass the right rank value to processes according to the hostfile
298 * Compile the examples by default, and use them as regression tests
299 * Implement MPI_Wtime()
300 * Change the reference speed to a command line option
303 * TCP_gamma can now be specified as command line option using
304 --cfg=TCP_gamma:10000000.0
305 * Change the --surf-path cmd line option into --cfg=path:
308 * Also include strbuff from xbt.h public header
309 * xbt_ex_display(): do not free the exception after displaying
310 This allows to do more with the given exception afterward.
311 Users should call xbt_ex_free() themselves.
315 Portability report of this version:
316 * Main portability targets:
317 - Linux(debian)/x86/context
318 - Linux(debian)/x86/pthreads
319 - Linux(debian)/amd64/context
320 - Linux(debian)/amd64/pthreads
321 These targets fail about 1/10 of times on gras/pmm, but we believe
322 that this is because of the test, not because of simgrid.
323 amok/saturate_sg fails even more rarely, and the test may not be
326 - Mac OSX Leopard/x86/context
327 The test suite still spits tons of errors because some obscure
328 force prevents us from removing the temporary directories
329 arguing that they still contain some metadata I've never heard of.
330 Smpi fails because seq is not installed.
331 Everything seems to work properly beside of that.
334 - AIX version 5.3 (both contexts and pthread)
335 Smpi still fails there because mktemp is not installed.
336 XML inclusions seems rosty on AIX.
338 * Windows: it's still lagging behind. If you want to help, please
341 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
343 SimGrid (3.3) stable; urgency=high
347 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
350 * Introduce the SIMIX module: factorize code between MSG and GRAS.
353 Until now, GRAS were using MSG as an interface to SURF. It was
354 quite difficult because both interface have several differences
355 (MSG channels vs GRAS sockets were the most notable point).
357 This also opens the gate to SMPI (which should occur soon) and speed
358 up simulations by to 40% (even if it were not the main goal).
360 **************************************
361 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
362 **************************************
363 The point is that events occuring at the exact same timestamp are
364 not scheduled in the same order with the old and new version. This
365 may be enough to completely change the execution of simulations in
366 some cases. Sorry for the inconvenience.
368 * Cleanup and upgrade the XML format to push further scalability
369 issues (check http://hal.inria.fr/inria-00256883/ for more info)
371 * Improve the testing infrastructure with tesh. Now a very large part of
372 the code is tested not only by being run but also by checking that the
373 output match an expected output [Mt].
375 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
376 is really less memory-demanding, which should allow you to use
377 larger files in SimGrid [AL].
379 * Inform valgrind about our contextes, so that it becomes usable
380 with the default (and more effecient) version of SimGrid
381 [contributed by Sékou Diakite, many thanks]
384 * Introduce a listener thread in charge of receiving incomming
385 messages from the network. It allows to overlap communication and
386 computation but most notably, it removes some stupid deadlocks due
387 to the fact that so far, a process could not send and receive at
388 the same time. This made most non trivial communication schema
390 * Convert the PIDs from long int to int to match the MSG ones (and
392 * New function: gras_agent_spawn() to launch a new process on
393 current host. Only working in simulation for now. [Mt]
394 * New function: gras_os_hostport() returning a constant form (ie,
395 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
398 * Make the backtrace of exceptions more human readable [Mt]
399 * New module: xbt/str [Mt]
400 a ton of string utility functions (split, join, printf to a newly
401 allocated buffer, trim, etc)
402 * New module: xbt/hash [Mt]
403 SHA1 hashing algorithm (more to come if needed)
404 * New module: xbt/synchro [Mt]
405 synchronization tools (mutex and conditions) working the same way
406 in simulation and in real life (mainly useful for GRAS, but not
408 * New module: xbt/queue [Mt]
409 classical producer/consumer synchronization scheme
410 * xbt_dynar_new_sync() creates a synchronized dynar. All access
411 (using the classical functions will get serialized) [Mt]
412 * Make dictionary internal table dynamic. No need to specify its size
413 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
415 * Make sure the log channels are organized as a tree under windows
416 (because of ANSI C compatibility issue, any channel were child of
420 * Cleaned many thing in surf and fixed a few bugs [AL].
421 * Add a nice command line configuration mechanism to compose models [AL].
422 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
423 the previous one (KCCFLN05). It relies on something that looks like
424 a max-min sharing mechanism but cannot be written as such. A new solver
425 was thus designed [AL].
426 * Add a new solver to lmm. Based on Lagrange optimization and
427 gradient-based descent, it enables to efficiently maximise systems s.a
429 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
431 This solver enables to propose two new network models for TCP Reno and
432 TCP Vegas based on Low's work. These models still need to be fully
433 tested though [Pedro Velho].
436 * Bug fix in SD_simulate. Now the time bound given as argument is
438 * Use the new parallel task model (ptask_L07) as default.
439 * Use the SURF command line configuration mechanism.
440 * 0-size tasks (for synchronization) should now work.
442 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
444 SimGrid (3.2) stable; urgency=high
448 We still experience issues on this platform, but we believe that at
451 GRAS API BREAKAGE (for simplification purpose, sorry):
452 * the gras_msgtype_by_name is not used anymore. Instead of
453 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
454 you can write (and must)
455 gras_msg_send(toserver, "request", &request);
456 - If you still want to pass a gras_msgtype_t to the function (to cache
457 the type and avoid the lookup time), use the gras_msg_send_() variant.
458 - Impacted functions:
459 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
460 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
461 * The callbacks are now expected to return 0 when everything went well
462 (just like the main() function)
464 GRAS new features and improvements:
465 * New module mecanism where user code can use per process globals [Mt]
466 This is similar to gras_userdata_*() functions, but for libraries. It
467 factorize some code developped over and over in the examples and AMOK.
468 It has still to be documented and used (only amok/peermanagement is
470 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
471 loss when they were small enough to fit into the buffer and sent quickly
472 enough so that they can all get received in one shoot.
473 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
474 if not found. Use the *_or_null() variant for the old semantic.
475 * In gras_msg_handle, do not discard messages without callback.
476 They are probably messages to be explicitly awaited later (ie, proofs of
477 mis-synchronization in userland since they are sent before being awaited)
479 * gras_socket_meas_send/recv: semantic changed!
480 The numerical arguments used to be (1) the total amount of data to send
481 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
482 messages. This was need for the fool willing to send more than MAXINT
483 bytes on quite fat pipes.
486 * Do really rename the hostmanagement module to peermanagement. [Mt]
487 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
488 but this is rather new and this was documented in the module
489 documentation (poor excuses, I admit)
490 * Bandwidth measurement semantic changed! This follows the changes to
491 gras_socket_meas_send/recv explained above.
494 * A sequential mode has been added to the workstations. When a workstation
495 is in sequential mode, it can execute only one task, and the other tasks
496 are waiting in a FIFO. [Christophe Thiery]
499 * The KCCFLN05 workstation model now handles parallel tasks. It is the
500 model for SIMDAG. [Christophe Thiery]
501 * Bug fix in the maxmin solver: Some values were close to 0 instead of
502 equal to 0, which caused some bad behaviors in
503 saturated_constraint_set_update. I now use a threshold mechanism like in
507 * When running manually src/testall, you select specific units [Mt]
508 testall is the result of our cunit mecanism, and should replace all
509 the scripty thingy around since bash don't run easily on billware.
511 * A mallocator system has been added. [Christophe Thiery]
512 Mallocators allow you to recycle your unused objects instead of freeing them
513 and allocating new ones.
515 Documentation update:
516 * FAQ reworking + New FAQs:
517 - "Valgrind spits tons of errors!" [Mt]
518 - "How to repport bugs" [Mt]
519 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
520 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
521 - Communication time measurement within MSG [AL]
522 - I experience weird communication times when I change the latency [AL]
525 - an introduction to the framework and to the used communication model
526 - an initiatic tour introducing the most proheminent features:
528 . Lesson 0: Installing GRAS
529 . Lesson 1: Setting up your own project
530 o Part 2: Message passing
531 . Lesson 2: Exchanging simple messages
532 . Lesson 3: Passing arguments to the processes (in SG)
533 . Lesson 4: Attaching callbacks to messages
534 . Lesson 5: Using globals in processes
535 . Lesson 6: Logging informations properly
536 . Lesson 7: Using internal timers
537 . Lesson 8: Handling errors through exceptions
538 . Lesson 9: Exchanging simple data
539 . Lesson 10: Remote Procedure Calling (RPC)
540 . Lesson 11: Explicitely waiting for messages
541 . Recapping of message passing features in GRAS
542 - A HOWTO section containing:
543 o HOWTO design a GRAS application
544 More are due, of course. They will come latter. In the meanwhile, you can
545 check the examples which are still here.
547 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
549 SimGrid (3.1) stable; urgency=high
553 There was a stack corruption somewhere, visible only when optimizing
554 with these versions. [Vince]
557 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
558 module that enabled to play with Directed Acyclic Graphs. It is built
559 directly on top of SURF and provides an API rather close to the old
560 SG. Some old codes using SG are currently under rewrite to check that
561 all needful functions are provided. [Christophe Thiery]
564 * Complete rewrite of the KCCFLN05 workstation model. It is now an
565 extension of the classical CLM03 model that gracefully handles
566 failures. This is now the default model for MSG and GRAS. It doesn't
567 handle parallel tasks yet though. [AL]
568 * Bug fix: Weights were not correctly set in the network part.
569 WARNING: This may have resulted in incorrect results with simulations
570 where there are more than one flow on a given link. [AL]
573 * After a (long ?) discussion on simgrid-devel, we have decided that the
574 convention we had on units was stupid. That is why it has been decided
575 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
576 WARNING : This means that all previous platform files will not work as
577 such with this version! A warning is issued to ask users to update
579 A conversion script can be found in the contrib module of the CVS, under
580 the name contrib/platform_generation/surfxml_update.pl [MQ]
583 * Bug fix: Processes were started in reverse order, wrt deployment file.
584 WARNING: if your code relies on this bug, please fix it. [AL]
585 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
586 being executed on two different locations. [AL]
587 * Bug fix: Failures are now better supported thanks to Derrick's tests
588 (there was many failure situations I hadn't thought of and that weren't
589 correctly handled). [AL]
590 * New function: MSG_host_is_avail indicates you whether a given m_host_t
594 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
595 Exception occurring on server-side are propagated back to client (!).
597 API CHANGE: the callback changed their prototype. Change:
598 int my_handler(gras_socket_t expeditor, void *payload_data) {
600 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
601 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
603 * New! function: gras_msg_handleall to deal with all messages arriving
604 within a given period.
605 * New! function: gras_socket_server_range to get a server socket in a
606 range of port numbers (ease to avoid port number conflicts) [MQ]
607 * New! gras processes display their backtrace when they get a SIGUSR1
608 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
609 Sweet to debug RL processes [MQ]
613 - Do not force experiment sizes to be expressed in kb, or it becomes
614 impossible to measure the latency this way (needs one byte-long tests)
615 WARNING: this changes the amok_bw_* function semantic. [MQ]
616 - Implements the link saturation stuff. [MQ]
617 * Peer management module:
618 New! module factorizing code that we wrote over and over [MQ].
621 * New module: cunit (my jUnit implementation in ansi C) [MQ]
622 - Test units are placed directly into the library code, they get extracted
623 automatically and placed into the src/testall binary.
624 - Convert most of the XBT tests to this system.
625 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
626 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
627 live in the same C code. This required to change a little bit the API
628 of surfxml parsing but shouldn't be an issue for end-users. [AL]
629 * New module: sparse graph structure with basic algorithms (this is work
630 in progress and the API is not considered to be frozen yet). [AL]
631 * Display more information on backtraces: source line & function names are
632 now displayed just like valgrind does (rely on addr2line tool) [MQ]
633 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
634 * Reworked a little bit some #include statements to load only required
635 headers. Some user code that relied on SimGrid to include stdlib or
636 stdio may need to include it by themselves. [AL]
637 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
639 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
640 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
641 but I guess that almost nobody used those parts. [MQ]
643 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
645 SimGrid (3.0.1) stable; urgency=low
648 * Unfortunately, I had missed 5 misnamed functions:
649 xbt_fifo_item_t xbt_fifo_newitem(void);
650 void xbt_fifo_freeitem(xbt_fifo_item_t);
651 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
652 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
653 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
654 They're now deprecated. Please use their new versions:
655 xbt_fifo_item_t xbt_fifo_new_item(void);
656 void xbt_fifo_free_item(xbt_fifo_item_t);
657 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
658 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
659 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
661 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
662 * Documentation: xbt_log module unmercifully reworked [MQ]
663 * Bugfix: there was a problem with the ending of contexts with
664 the pthread backend. It caused some weird deadlock or behavior
665 depending on the pthread implementation. [AL]
666 * Bugfix: get the exceptions raised in the simulator repport where
667 and why they come from when they are not catched in time [AL, MQ]
670 * Bugfix: Do repport the error when two non-connected hosts try to
671 exchange data (Thanks to Flavien for stumbling into this one) [AL]
674 * Add additionnal checkings on communications. Assert that two
675 communicating hosts are connected by a set of links... [AL]
678 * Add additionnal checkings on channel values in communication [AL]
679 * New: MSG_task_get_source to see on which host a task was generated [HC]
680 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
681 the number of tasks waiting to be received on channel and sent
683 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
684 waits for the first task coming from a given host.. [AL]
686 GRAS new functionnalities: [MQ]
687 * Enhance the parsing macro to allow the size of multidimentional objects
688 to be given thru annotations.
689 * New example (and documentation): Matrix Multiplication a la RPC
690 (as when I was young!) and fix a bunch of bugs found on the way.
692 GRAS performance improvements: [MQ]
694 * Reduce the amount of cbps creation/destruction by making it static to
695 datadesc_send/recv() and using a (newly created) cbps_reset (based on
698 * Change libdata to a set so that we can search for stuff by ID (and thus
699 reduce the insane amount of dict lookups)
702 * Actually implement gras_datadesc_copy() so that we don't have to mimick
703 RL communication on top of SG since it's so uneffective.
704 It may also be used for inter-thread communication in RL, one day.
705 * Use gras_datadesc_copy() to exchange messages on top of SG
707 - improve message exchange performance on top of SG
708 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
709 * Don't exchange on the network the size of the used part of buffer,
710 instead, specify the possible buffer size to read().
712 - reduces the amount of read/write calls (one pair per exchange)
713 - reduces the amount of exchanged data (the size)
714 - allows to retrieve all arrived data on receiver side, if we don't need
715 it right now (subsequent read will peek the buffer)
716 - allows the receiver to proceed with the begining of the stream before
717 everything is arrived
718 - make it possible to build an iov transport (using readv/writev)
720 - take care of the data with non-stable storage (like stacked data),
722 * If possible, TCP send uses vector I/O (when writev() is here)
723 - Don't use it for receive since we send data sizes and data on the
724 same stream, so we wouldn't be able to chain large amount of chunks
725 before having to flush the stuff to read the size.
726 * Rework the transport plugin mecanism to simplify it and reduce the
727 amount of pointer dereferencement when searching for the right function
730 * I guess that now, we do almost as few system calls as possible while
731 doing as few data copy as possible.
733 To improve it further, we could try to send all the sizes first and then
734 all the data (to use iov on receiving size), but it's only a partial
735 solution: when you have 2 dimensional data, the sizes of the second
736 dimension is data of the first dimension, so you need 3 streams.
738 I'm not sure the potential performance gains justify the coding burden.
740 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
742 SimGrid (3.00) stable; urgency=high
745 * New! Give the possibility to hijack the surf parser and thus bypass
746 MSG_create_environment and MSG_launch_application. Have a look at
747 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
749 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
751 SimGrid (2.96) unstable; urgency=low
756 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
757 This deprecates the xbt_error_t mecanisms.
758 It modifies (simplifies) all XBT and GRAS API.
759 MSG API keeps unchanged (exceptions raised by XBT are catched from
760 within MSG and masked with existing error handling facilities)
763 * New! Add a FATPIPE model. [AL]
764 * New! Add a parallel task model. [AL]
765 * New! Add automatically a loopback interface (in the default
766 network model) if none was precised.
769 * Bugfix: MSG_process_resume now works with the current running process.
771 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
772 * Modification of MSG_task_get_compute_duration. Once a task has been
773 processed, the value returned by this function is now equal to 0. [AL]
774 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
775 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
776 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
777 of a m_task. For now, MSG_task_cancel only works with computation
779 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
780 of the processor (in Mflop/s) regardless of the current load on the
782 * API Change: use proper naming convention for MSG_getClock and
783 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
785 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
786 This function changes the priority of a computation task. This priority
787 doesn't affect the transfer rate. A priority of 2 will make a task
788 receive two times more cpu power than the other ones. This function
789 has been added to suit the needs of Nguyen The Loc and hasn't been that
790 much tested yet. So if it fails, please report it and send me your code.
792 * API Change: removed all functions and types that were marked "deprecated"
793 since many months. Renamed MSG_global_init_args to MSG_global_init.
795 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
797 SimGrid (2.95) unstable; urgency=low
800 * Steal some nice code to GNU pth to fix context detection and usage [AL]
801 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
802 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
805 * Bugfix: Allow absolute paths for platform description files [MQ]
806 * Bugfix: do free the variables after use. Leads to drastic performance
808 * Implement max_duration (ie, timeouts) on resources [AL]
811 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
813 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
814 the needed support (timeouts) [AL]
817 * Implement measurement sockets. You can now get the bandwidth between two
818 hosts thanks to AMOK (see below). [MQ]
819 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
820 dynar over the network (yeah) [MQ]
821 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
822 * simple/static token-ring example. [Alexandre Colucci and MQ]
823 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
827 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
828 type parsing. "short" and "long" modifiers were also ignored; other
829 modifier (such as reference level) are still ignored. [MQ]
830 * Embeed the buffer size within the buffer itself on SG. [MQ]
831 That way, send() are atomic and cannot get intermixed anymore (at least
832 the ones which are less than 100k; bigger messages still have the issue)
833 * Array size pushed by the field, not by the field type (or each
834 and every long int will push stuff to the cbps) [MQ]
835 * use select() to sleep since it allows to portably sleep less than one
838 GRAS (minor cleanups)
839 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
842 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
843 * type category 'ignored' killed as it was never used and were difficult
845 * whether a type can cycle or not is now a flag, leaving room for more
846 flags (as "ignored", if we feel the need one day ;)
847 * Rename raw sockets to measurement sockets since "raw" has another
848 meaning in networking community.
851 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
852 and offers features not belonging to GRAS but that most applications
853 need. One day, it may be a set of plugins loadable at runtime.
854 * New module: bandwidth
855 bandwidth measurement between arbitrary nodes running this module. [MQ]
857 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
859 SimGrid (2.94) unstable; urgency=low
861 The first beta release of SimGrid 3 !
865 * Update the main page and the FAQ. Adding references to gforge.
868 * Add a gras_os_getpid function.
871 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
872 * Extend the logs so that they also print PID, hostname, date, ... if
874 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
875 and kill the old version which were in testsuite/
876 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
880 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
881 for users. Instead, each programming environment (GRAS, MSG,...) use it
882 when needed to provide such a feature to users.
883 Don't shortcut the mecanism or you will also shortcut the virtualization
884 you need on the simulator.
888 * Cleanups in configury with regard to compile optimization/warning flags.
889 Also add -fno-loop-optimize to any powerpc since it's the optimization
890 killing gcc (< 3.4.0).
891 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
892 needed by MSG examples complications
893 * Borrow configury beautifications from PHP
896 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
897 warning (thanks loris for stumbling into this one).
898 * Bugfix: stop loading private headers (gras_config.h) from the public
902 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
903 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
904 RL would imply a DNS resolver, which is *hard* to do in a portable way
905 (and therefore delayed).
906 * Implement a real timer mecanism and use it in timing macros. This allows
907 to avoid rounding errors and get a 0.000005 sec precision in timing
908 macros. While I was at it, various cleanups:
909 - allow to declare more than one timed section per file (fix a stupid bug)
910 - move some private declaration to the right place
911 - merge conditional execution and timing macros into emulation module
912 - document the module
913 - make sure the module cleanups its mess on gras_exit
914 * Documentation improvements:
915 - (new) how to compile applications using GRAS
916 - (new) emulation support (timing macros)
918 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
920 SimGrid (2.93) unstable; urgency=low
922 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
925 - Use Paje properly where used. Still to be sanitized properly.
926 - Portability fix: Add an implementation of the contexts using pthread
930 - Add xbt_procname(): returns the name of the current process.
931 Use it to show the current process's name in all logging.
933 - fix detection of older flex version and the reaction, since we do
934 depend on modern ones (we use lex_destroy)
935 - Better separation of SG and RL in the libs: remove all simulation code
936 from libgras. As a result, this lib is now only 200k when stripped.
937 Some of the xbt modules may also be duplicated (two sets and such) and
938 should be cleaned/killed before SG3.
939 - Insist on using xlC on AIX because of weird problems involving gcc there.
940 - Cleanup the make remote stuff. This is now done by scripts
941 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
942 mainly for our private use, but we're working on changing them to user
945 - Bugfix: flush the socket on close only if there is some *output*.
946 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
948 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
951 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
953 SimGrid (2.92) unstable; urgency=low
955 Alpha 3 on the path to SimGrid 3
959 - New! First try of benchmarking macros.
960 - New! First try so that gras_stub_generator generate deployment and
961 remote compilation helpers.
963 - Bugfix: Initialization fix in msg_test.
967 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
969 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
971 - API Change: gras_os_sleep to take the amount of seconds as a double.
972 Accepting an int was error prone since it was the only location where
973 seconds were coded as such. It leaded to damn rounding errors.
974 - Bugfix: Hard to belive that timers ever worked before this.
976 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
978 SimGrid (2.91) unstable; urgency=low
980 Alpha 2 on the path to SimGrid 3
984 - Bug fix in the lmm_solver.
986 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
987 through the function MSG_paje_output.
988 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
989 - It is possible to bound the rate of a communication in MSG with
990 MSG_task_put_bounded() (was already in the previous version but I had forgotten
991 to write it in the changelog).
992 - Bug fix to let GRAS run on top of MSG until we move it directly on top
997 - Various cleanups to the autotools stuff
998 - Begin to move Gras examples to examples/gras/
999 - Let make distcheck work again (yeah!)
1001 - documentation overhauled using doxygen.
1002 gtk-doc-tools is dead in SimGrid now.
1003 - Automatically extract all existing logging categories, and add the list
1004 to the documentation (long standing one, to say the less)
1006 - Cleanup the known architecture table. Reorder the entries to group what
1007 should be, and use a more consistent naming scheme.
1008 (some of the test dataset are still to be regenerated)
1009 - New! Allow library to register globals on each process just as userdata
1011 This is implemented using a xbt_dict and not a xbt_set, so we loose the
1012 lookup time (for now).
1013 Use it in msg and trp.
1014 This cleans a lot the internals and helps enforcing privacy of the
1015 headers between the gras components.
1016 - New! Add a timer mechanism, not unlike cron(8) and at(1).
1017 - Bugfix: gras_os_time was delirious in RL.
1018 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
1020 - Reenable GRAS now that it works.
1022 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
1024 SimGrid (2.90) unstable; urgency=low
1026 Alpha 1 on the path to SimGrid 3
1028 * It is a long time since the last release of SimGrid. I'm sorry about
1029 that but as I had told you, I was rewriting a lot of things. I apologize
1030 to those who had been reporting bugs to me and that I had not answered.
1031 If your bug is still in the new version, please tell me. Here is a
1032 summary of the main changes.
1034 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
1035 lead by Martin Quinson. As a consequence SimGrid gains a lot in
1036 portability, speed, and a lot more but you'll figure it out later.
1037 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
1038 I wanted to release the new MSG as soon as possible and I have
1039 broken GRAS, which is the reason why, for now, only MSG is fully
1040 functional. A laconic description of these projects is available
1041 in the documentation.
1043 * REVOLUTION 2: I have removed SG and I am now using a new simulation
1044 kernel optimized for our needs (called SURF but only the developers
1045 should use it). Hence, MSG is now roughly 30 times faster and I think
1046 that by rewriting a little bit MSG, I could event speed it up a little
1047 bit more. Beside the gain in speed, it is also much easier to encode a
1048 new platform model with SURF than it was with SG. More to come...
1050 * REVOLUTION 3: I have tried to change a little as possible the API of
1051 MSG but a few things really had to disappear. The main differences
1052 with the previous version are :
1053 1) no more m_links_t and the corresponding functions. Platforms are
1054 directly read from a XML description and cannot be hard-coded
1055 anymore. The same format is used for application deployment
1056 description. The new format is described in the documentation.
1057 Have a look in tools/platform_generation. There is a tiny script
1058 that converts from the old platform format to the new one. Concerning
1059 the application deployment format, parsing the old one is tricky.
1060 I think most of you should however be able to convert your files. If
1061 it is really an issue, I can write a C code that does the conversion.
1063 2) the toolbox tbx does not exist anymore. We now have a library
1064 with much more data-structures but without the hash-tables (we have
1065 dictionaries that are much faster).
1067 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
1069 *****************************************************************************
1070 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
1071 * don't feel like converting the oldies. (Mt) *
1072 *****************************************************************************
1075 Version 2.90: "the long awaited one"
1076 - Finished rewriting and debugging MSG. Rewrote the documentation.
1077 - disable GRAS for now since it needs to be ported to the newest SG
1080 - Finish the port to windows (using mingw32 for cross-compile)
1083 - Main loop and datastructures of SURF. A cpu resource object is
1084 functional. Surf can thus be used to create cpu's with variable
1085 performance on which you can execute some actions.
1087 2004-11-15 Martin Quinson
1088 - Port to ARM. Simply added the alignment and size descriptions. Should
1089 work, but the ARM machines are so slow that I didn't had the opportunity
1090 to 'make check' over there yet.
1092 2004-11-15 Arnaud Legrand
1093 - Trace manager now written. It uses a heap structure and is therefore
1094 expected to be efficient. It may however be speeded up (particularly
1095 when many events occur at the same date) by using red and black
1096 trees. One day maybe...
1097 - Max-min linear system solver written. It uses a sparse matrix
1098 structure taking advantage of its expected use. Most operations are
1099 O(1) and free/calloc are called as few as possible. The computation of
1100 the minimum could however be improved by using a red and black tree
1103 2004-11-03 Arnaud Legrand
1104 - Rename every gras_* function that was in xbt/ to its xbt_
1106 - Add a heap and a doubly-linked list to xbt
1107 - Added a dichotomy to the dictionaries. make check works as well before
1108 so I assume that the patch is correct. I do not know however if things
1109 run effectively faster than before now. :)
1111 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
1112 SimGrid, and the version number is bumped to 2.x
1114 2004-10-29 Martin Quinson
1115 - Introduction of the remote errors.
1116 They are the result of a RMI/RPC on the remote machine.
1117 ErrCodes being scalar values, you can't get the host on which those
1118 errors did happen. Extending the error mechanism as in Gnome is possible.
1119 No idea yet whether it is a good idea.
1121 2004-10-28 Martin Quinson
1122 - Interface revolution: the Starred Structure Eradication.
1123 I used to do typedef struct {} toto_t; and then handle *toto_t.
1124 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
1125 - ???_t is a valid type (builded with typedef)
1126 - s_toto_t is a structure (access to fields with .)
1127 - s_toto is a structure needing 'struct' keyword to be used
1128 - e_toto_t is an enum
1129 - toto_t is an 'object' (struct*)
1131 typedef struct s_toto {} s_toto_t, *toto_t;
1132 typedef enum {} e_toto_t;
1133 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
1134 s_toto_t) is private.
1136 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
1137 so that it can set the variable to NULL. It was so for dicts and sets,
1138 it changed for dynars.
1140 - Fix a bunch of memleaks in dict_remove
1141 - Fix a bug in sg/server_socket opening: it failed all the time.
1143 2004-10-07 Martin Quinson
1144 - Speed up dynar lookup operation a bit.
1146 gras_dynar_get is dead.
1148 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
1149 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
1150 (which gives you the address of the stored data).
1152 gras_dynar_get_as is an helpful macro which allows you to retrieve a
1153 copy of the data using an affectation to do the job and not a memcpy.
1155 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
1156 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
1158 It does not really speedup the dynar test because they are
1159 setting elements all the time (and look them seldom). But the dict does
1160 far more lookup than setting.
1162 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
1164 2004-10-05 Martin Quinson
1165 - Allow to (en/dis)able the cycle detection at run time.
1167 Whether we should check for cycle or not is now a property of each
1168 datatype. When you think there may be some cycle, use datadesc_cycle_set.
1169 datadesc_cycle_unset allow to remove this property when previously set.
1171 Note that the cycle detection is off by default since it impacts the
1172 performance. Watch the data you feed GRAS with ;)
1174 This property is hereditary. Any element embedded in a structure having it
1175 set have it set for the time of this data exchange.
1177 You should set it both on sender and receiver side. If you don't set it on
1178 sender side, it will enter an endless loop. If you forget on receiver
1179 side, the cycles won't be recreated after communication.
1181 - Header reorganization.
1182 Kill gras_private.h, each submodule must load the headers it needs.
1184 2004-10-04 Martin Quinson
1185 - Interface revolution: do not try to survive to malloc failure.
1187 Now, gras_malloc and friends call gras_abort() on failure.
1188 As a conclusion, malloc_error is not a valid error anymore, and all
1189 functions for which it was the only gras_error_t return value are
1190 changed. They now return void, or there result directly.
1191 This simplify the API a lot.
1193 2004-09-29 Martin Quinson
1194 - Re-enable raw sockets.
1195 Created by gras_socket_{client,server}_ext;
1196 Used with gras_raw_{send,recv}
1199 It should allow to kill the last bits of gras first version soon.
1201 This is not completely satisfactory yet (duplicate code with
1202 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
1205 - Simplify transport plugin (internal) interface by not passing any
1206 argument to _server and _client, but embedding them in the socket
1209 2004-09-28 Martin Quinson
1210 - Finish the port to AIX.
1211 autoconf was my problem (segfault within the malloc replacement
1212 function. No idea why)
1214 2004-09-16 Martin Quinson
1215 - Fix some size_t madness on 64bit architectures.
1217 2004-09-08 Martin Quinson
1218 - Reduce the number of system headers loaded, overload some more system
1219 calls (such as malloc to cast the result of the system one, and work
1221 - Fix and reintroduce the config support
1223 2004-09-07 Martin Quinson
1224 - Source code reorganization to allow Arnaud to surf all over there.
1225 - Allow to document the logging categories.
1226 - Remove all uppercase from logging categories and useless cleanup in names.
1228 2004-08-18 Martin Quinson
1229 Version 0.6.2 (protocol not changed; API changed)
1230 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
1231 gras_error_t), and NULL when not found. Functions expecting a msgtype
1232 as argument (msg_wait; msg_send) deal with NULL argument by providing a
1233 hopefully usefull message.
1234 - Portability to prehistoric sparcs again
1236 2004-08-17 Martin Quinson
1237 Version 0.6.1 (protocol not changed; ABI not changed)
1238 - prealloc some buffers to speed things up
1240 2004-08-11 Martin Quinson
1241 Version 0.6 (protocol not changed; ABI expended)
1242 - The parsing macro can deal with the references, provided that you add
1243 the relevant annotations (using GRAS_ANNOTE(size,field_name))
1245 2004-08-09 Martin Quinson
1246 Version 0.5 (protocol not changed; ABI changed)
1247 - Allow to off turn the cycle detection code in data exchange at
1248 compilation time. It should be at run time, but I'm short of time (and
1249 the config stuff is still broken). That way, we keep dict out of the
1250 critical path, which is good because the performance is poor:
1251 - search not dichotomial yet
1252 - dynar give no way to access their content and memcpy everytime
1253 - In composed data description (struct, ref and so on), stop foolness of
1254 keeping the subtype's ID, but store the type itself. This keeps sets out
1255 of the critical path, which is good since they rely on dynar and
1256 dictionnaries. The only loose of that is that we cannot detect the
1257 redeclaration of a structure/union with another content (but I'm not sure
1258 the code detected well this error before anyway). We still can detect
1259 the redefinition discrepancy for the other types.
1260 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
1261 it breaks the code because of type-punning used all over the place).
1262 This breaks on all non-gcc architectures (for now).
1264 All those changes (plus the buffer of last time) allow me to gain 2 order
1265 of magnitude on cruel tests consisting of 800000 array of integers on two
1266 level of a hierarchical structure (200 secondes -> 4 secondes)
1269 - the selector of reference must now return the type it points to, not
1270 the ID of this type.
1272 2004-08-06 Martin Quinson
1273 Version 0.4 (protocol changed; ABI not changed)
1274 - Allow to pass --gras-log argument to processes in simulation mode. Really.
1275 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
1276 - Implement a buffer transport, and use it by default (it relies on tcp in
1277 real life and on sg in simulation).
1278 That's a bit hackish since I had a new field to the structure to store
1279 its data without interfering with the subtype ones. Inheritance
1280 is tricky in C. And that's a kind of reverse inheritance with one class
1281 derivating two classes. Or maybe a game with java interfaces. Anyway,
1282 that's damn hard in C (at least).
1283 Moreover, I got tired while trying to ensure plugin separation and
1284 genericity in SG mode. MSG wants me to do weird things, so let's go for
1285 cruel hacks (temporarily of course ;).
1286 See comment in transport_private.h:71
1287 - do not include all the _interface headers in private but in the files
1288 which really need them (to cut the compilation time when they are
1291 2004-07-26 Martin Quinson
1292 Version 0.3 (protocol not changed; ABI changed)
1293 - Major overhault of the datadesc interface to simplify it:
1294 - shorted the function names:
1295 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
1296 - add a trivial way to push/pop integers into the cbps without malloc.
1297 This allows to make really generic sub_type description, which simply
1298 pop their size of the stack.
1299 - add a function gras_datadesc_ref_pop_arr() which does what users want
1300 most of the time: Declare a dynamic array (which pops its size of the
1301 stack) and declare a reference to it. Poor name, but anyway.
1302 - kill the post-send callback, add a post-receive one
1304 2004-07-23 Martin Quinson
1305 Version 0.2 (protocol changed; ABI changed)
1306 - add some testing for cpbs in the test cases, and fix some more bugs.
1307 This invalidate again the little64 data file, since I cannot regenerate
1309 - remove an awfull optimization in the logging stuff, allowing me to:
1310 - understand it again
1311 - learn gcc how to check that the argument match the provided format
1312 - fix all errors revealed by gcc after that
1313 - internal keys of dict are not \0 terminated. Deal with it properly in
1314 loggings instead of segfaulting when the user want to see the logs :-/
1316 2004-07-22 Martin Quinson
1317 - Fix some stupid bug preventing cbps (callback postit) from working
1319 2004-07-21 Martin Quinson
1320 - Some documentation cleanups
1321 - remove the useless last argument of msgtype_declare
1322 - rename the Virtu functions to fit into the 'os' namespace
1323 - move headers src/include -> src/include/gras/ and stop fooling with
1324 gras -> . symbolic link
1325 - make distcheck is now successful
1327 2004-07-19 Martin Quinson
1329 - Build shared library also
1330 - Install html doc to the right location
1331 - stop removing maintainer files in make clean
1332 - build tests only on make check
1334 2004-07-13 Martin Quinson
1336 - No major issue in previous version => change versionning schema
1337 - Re-enable little64 convertion test now that Abdou kindly regenerated the
1338 corresponding dataset.
1340 2004-07-11 Martin Quinson
1342 - Get it working with any kind of structure (we can compute the padding
1343 bytes remotely for all the architectures I have access to)
1344 - Implement the structure parsing macro (still not quite robust/complete)
1345 - Improvement to the remote testing toysuite
1347 2004-07-10 Martin Quinson
1348 [autoconf mechanism]
1349 - get ride of a bunch of deprecated macros
1350 - actually run the test for two-compliment, not only compile it :-/
1351 - test whether the structures get packed (and bail out if yes. Damn.
1352 Alignment is a serious matter)
1353 - test whether the structures get compacted (but respecting the alignment
1354 constraints of each types)
1355 - test whether the array fields of structures can straddle alignment boundaries
1357 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
1358 (took me 2 hours to find that bug, looking at the wrong place)
1359 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
1360 before sending/receiving and are used to compute the offsets of fields
1361 - Given that padding size depend even on compiler options, keep track of
1362 alignment and aligned_size only for the current architecture. Not a big
1363 deal since we send structure fields one after the other (seems
1365 - Add the datastructure used for IEEE paper by the PBIO guys to the test
1366 program, let it work on linux/gcc/little32. portability todo.
1368 2004-07-08 Martin Quinson
1369 - import and improve remote compilation support from FAST
1370 - make sure make check works on half a dozen of machines out there
1372 2004-07-07 Martin Quinson
1373 Let's say it's version 0.0.3 ;)
1374 - Implement conversions (yuhu!)
1375 - Let it work on solaris (beside conversion, of course)
1376 - Stupid me, using rand() to generate the conversion datatests in not wise.
1378 2004-07-06 Martin Quinson
1379 - Let make dist work, since I'm gonna need it to compile on remote hosts
1380 - Let Tests/datadesc_usage write the architecture on which the file was
1381 generated as first byte.
1382 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
1383 architecture descriptions.
1384 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
1385 on those architectures.
1386 - Optimization: send/recv array of scalar in one shoot
1388 2004-07-05 Martin Quinson
1389 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
1391 - Plug a whole bunch of memleaks
1392 - each process now have to call gras_{init,exit}. One day, their log
1393 settings will be separated
1394 - Continue the code factorisation between SG, RL and common in Transport.
1396 2004-07-04 Martin Quinson
1398 - Redistribution between SG and RL.
1399 We wanna have to accept in SG, so move accepted related parts of RL in
1400 the common part. (more precisely, the dynar of all known sockets is no
1401 more a static in transport.c, but part of the process_data)
1403 [gras_stub_generator]
1404 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
1406 2004-07-03 Martin Quinson
1407 - Create a new log channel tbx containing dict, set, log, dynar (to shut
1408 them all up in one shot)
1410 - Fix the ugly case of reference to dynamic array.
1411 - New (semi-public) function gras_datadesc_size to allow the messaging
1412 layer to malloc the needed space for the buffer.
1414 - gras_socket_close now expect the socket to close (and not its address to
1415 put NULL in it after it). This is because the socket passed to handlers
1416 is one of their argument (=> not writable).
1418 - propagate the interface cleanup from last week in datadesc, ie remove a
1419 superfluous level of indirection. User pass adress of variable
1420 containing data (both when sending and receiving), and not of a variable
1421 being a pointer to the data. Let's say that I like it better ;)
1422 The price for that is constructs like "int msg=*(int*)payload" in
1423 handlers, but it's a fine price, IMHO.
1425 - Let it work in RL (yuhu)
1427 2004-06-21 Martin Quinson
1429 - porting SG plugin and SG select to new standards (works almost).
1430 - plug memleaks and fix bugs around.
1433 - cleanup the prototype of data recv and force users to specify when they
1434 want to handle references to objects. Test case working even for cycles.
1435 - plug memleaks. Valgrind is perfectly ok with this.
1437 2004-06-12 Martin Quinson
1439 - cleanup the separation between plugin and main code in plugin creation
1441 2004-06-11 Martin Quinson
1443 - Reput hook for raw sockets, needed for BW experiments
1444 - kill a few lines of dead code
1445 [Data description] Interface cleanup
1446 - gras_datadesc_by_name returns the searched type or NULL.
1447 That way, no variable is needed to use a type desc once, which makes
1449 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
1450 two parameters were strings (field name, type name), leading to
1452 [Dicos] Interface cleanup
1453 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
1454 This is consistant with the dynar API.
1456 2004-04-21 Martin Quinson
1458 - Porting to new standards.
1460 - interface cleanup.
1461 There is no bag anymore, no need to take extra provision to mask the
1462 pointers behind "ID".
1463 Better splitup of functions between files create/exchange/convert.
1464 This is still a bit artificial since convert and receive are so
1465 interleaved, but anyway.
1467 - add a queued message list to procdata (the ones not matching criteria
1469 - factorize some more code between SG and RL wrt procdata
1471 - use gras_exit in example to track memleaks
1472 - get rid of gs_example now that GS is properly integrated into gras
1473 - update run_test to integrate the lastest tests (datadesc)
1475 - rename WARNINGn macros to WARNn since it prooved error-prone
1477 2004-04-19 Martin Quinson
1479 - register init/exit functions within gras module mechanism
1480 - send/receive function.
1481 Convertion is not implemented, but short-cutted if not needed.
1482 struct/array elements are sent one by one (instead of block-wise), but
1483 nobody really cares (yet). Get a prototype before optimizing.
1484 - tests (using a file socket) for DD send/receive on:
1485 - base types: int, float
1486 - array: fixed size, string (ie ref to dynamic string)
1487 - structure: homogeneous, heterogeneous
1488 - chained list, graph with cycle
1489 Believe it or not, valgrind is not too unhappy with the results. The
1490 cycle happily segfaults, but the others are ok. And I'm sick of pointers
1494 - Bugfix when using a filename explicitely (instead of '-')
1496 2004-04-09 Martin Quinson
1498 - factorize more code between RL and SG in socket creation
1499 - Complete the implementation and tests of:
1501 o file (only in RL, and mainly for debugging)
1503 I lost 3 days to design a portable address resolver, and then decided
1504 that the prototype mainly have to run on my box.
1505 Addressing portability too early may be like optimizing too early :-/
1507 - use gras_init in the Tests instead of the crappy parse_log_opt
1508 (the latter function is removed)
1509 [Conditional execution]
1510 - New functions: gras_if_RL/gras_if_SG (basic support for this)
1511 [Code reorganisation]
1512 - Get rid of libgrasutils.a since it makes more trouble than it solves.
1513 Build examples against the RL library, since there is no way to disable
1514 its creation for now.
1516 For information, the beginning of coding on GRAS was back in june
1517 2003. I guess that every line has been rewritten at least twice since