1 SimGrid (3.3-cvs) unstable; urgency=low
3 JAVA BINDINGS for MSG (you dreamt of them? We made them)
6 Introduce the SIMIX module: factorize code between MSG and GRAS.
8 Until now, GRAS were using MSG as an interface to SURF. It was
9 quite difficult because both interface have several differences
10 (MSG channels vs GRAS sockets were the most notable point).
12 This also opens the gate to SMPI (which should occur soon) and speed
13 up simulations by to 40% (even if it were not the main goal).
15 **************************************
16 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
17 **************************************
18 The point is that events occuring at the exact same timestamp are
19 not scheduled in the same order with the old and new version. This
20 may be enough to completely change the execution of simulations in
21 some cases. Sorry for the inconvenience.
24 * Convert the PIDs from long int to int to match the MSG ones (and
26 * New function: gras_agent_spawn() to launch a new process on
27 current host. Only working in simulation for now.. [Mt]
28 * New function: gras_os_hostport() returning a constant form (ie,
29 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
32 * Make the backtrace of exceptions more human readable [Mt]
33 * New module: xbt/str [Mt]
34 a ton of string utility functions (split, join, printf to a newly
35 allocated buffer, trim, etc)
36 * New module: xbt/synchro [Mt]
37 synchronization tools (mutex and conditions) working the same way
38 in simulation and in real life (mainly useful for GRAS, but not
40 * New module: xbt/queue [Mt]
41 classical producer/consumer synchronization scheme
45 SimGrid (3.2) unstable; urgency=low
49 We still experience issues on this platform, but we belive that at
52 GRAS API BREAKAGE (for simplification purpose, sorry):
53 * the gras_msgtype_by_name is not used anymore. Instead of
54 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
55 you can write (and must)
56 gras_msg_send(toserver, "request", &request);
57 - If you still want to pass a gras_msgtype_t to the function (to cache
58 the type and avoid the lookup time), use the gras_msg_send_() variant.
60 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
61 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
62 * The callbacks are now expected to return 0 when everything went well
63 (just like the main() function)
65 GRAS new features and improvements:
66 * New module mecanism where user code can use per process globals [Mt]
67 This is similar to gras_userdata_*() functions, but for libraries. It
68 factorize some code developped over and over in the examples and AMOK.
69 It has still to be documented and used (only amok/peermanagement is
71 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
72 loss when they were small enough to fit into the buffer and sent quickly
73 enough so that they can all get received in one shoot.
74 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
75 if not found. Use the *_or_null() variant for the old semantic.
76 * In gras_msg_handle, do not discard messages without callback.
77 They are probably messages to be explicitly awaited later (ie, proofs of
78 mis-synchronization in userland since they are sent before being awaited)
80 * gras_socket_meas_send/recv: semantic changed!
81 The numerical arguments used to be (1) the total amount of data to send
82 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
83 messages. This was need for the fool willing to send more than MAXINT
84 bytes on quite fat pipes.
87 * Do really rename the hostmanagement module to peermanagement. [Mt]
88 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
89 but this is rather new and this was documented in the module
90 documentation (poor excuses, I admit)
91 * Bandwidth measurement semantic changed! This follows the changes to
92 gras_socket_meas_send/recv explained above.
95 * A sequential mode has been added to the workstations. When a workstation
96 is in sequential mode, it can execute only one task, and the other tasks
97 are waiting in a FIFO. [Christophe Thiery]
100 * The KCCFLN05 workstation model now handles parallel tasks. It is the
101 model for SIMDAG. [Christophe Thiery]
102 * Bug fix in the maxmin solver: Some values were close to 0 instead of
103 equal to 0, which caused some bad behaviors in
104 saturated_constraint_set_update. I now use a threshold mechanism like in
108 * When running manually src/testall, you select specific units [Mt]
109 testall is the result of our cunit mecanism, and should replace all
110 the scripty thingy around since bash don't run easily on billware.
112 * A mallocator system has been added. [Christophe Thiery]
113 Mallocators allow you to recycle your unused objects instead of freeing them
114 and allocating new ones.
116 Documentation update:
117 * FAQ reworking + New FAQs:
118 - "Valgrind spits tons of errors!" [Mt]
119 - "How to repport bugs" [Mt]
120 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
121 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
122 - Communication time measurement within MSG [AL]
123 - I experience weird communication times when I change the latency [AL]
126 - an introduction to the framework and to the used communication model
127 - an initiatic tour introducing the most proheminent features:
129 . Lesson 0: Installing GRAS
130 . Lesson 1: Setting up your own project
131 o Part 2: Message passing
132 . Lesson 2: Exchanging simple messages
133 . Lesson 3: Passing arguments to the processes (in SG)
134 . Lesson 4: Attaching callbacks to messages
135 . Lesson 5: Using globals in processes
136 . Lesson 6: Logging informations properly
137 . Lesson 7: Using internal timers
138 . Lesson 8: Handling errors through exceptions
139 . Lesson 9: Exchanging simple data
140 . Lesson 10: Remote Procedure Calling (RPC)
141 . Lesson 11: Explicitely waiting for messages
142 . Recapping of message passing features in GRAS
143 - A HOWTO section containing:
144 o HOWTO design a GRAS application
145 More are due, of course. They will come latter. In the meanwhile, you can
146 check the examples which are still here.
148 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
150 SimGrid (3.1) unstable; urgency=low
154 There was a stack corruption somewhere, visible only when optimizing
155 with these versions. [Vince]
158 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
159 module that enabled to play with Directed Acyclic Graphs. It is built
160 directly on top of SURF and provides an API rather close to the old
161 SG. Some old codes using SG are currently under rewrite to check that
162 all needful functions are provided. [Christophe Thiery]
165 * Complete rewrite of the KCCFLN05 workstation model. It is now an
166 extension of the classical CLM03 model that gracefully handles
167 failures. This is now the default model for MSG and GRAS. It doesn't
168 handle parallel tasks yet though. [AL]
169 * Bug fix: Weights were not correctly set in the network part.
170 WARNING: This may have resulted in incorrect results with simulations
171 where there are more than one flow on a given link. [AL]
174 * After a (long ?) discussion on simgrid-devel, we have decided that the
175 convention we had on units was stupid. That is why it has been decided
176 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
177 WARNING : This means that all previous platform files will not work as
178 such with this version! A warning is issued to ask users to update
180 A conversion script can be found in the contrib module of the CVS, under
181 the name contrib/platform_generation/surfxml_update.pl [MQ]
184 * Bug fix: Processes were started in reverse order, wrt deployment file.
185 WARNING: if your code relies on this bug, please fix it. [AL]
186 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
187 being executed on two different locations. [AL]
188 * Bug fix: Failures are now better supported thanks to Derrick's tests
189 (there was many failure situations I hadn't thought of and that weren't
190 correctly handled). [AL]
191 * New function: MSG_host_is_avail indicates you whether a given m_host_t
195 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
196 Exception occurring on server-side are propagated back to client (!).
198 API CHANGE: the callback changed their prototype. Change:
199 int my_handler(gras_socket_t expeditor, void *payload_data) {
201 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
202 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
204 * New! function: gras_msg_handleall to deal with all messages arriving
205 within a given period.
206 * New! function: gras_socket_server_range to get a server socket in a
207 range of port numbers (ease to avoid port number conflicts) [MQ]
208 * New! gras processes display their backtrace when they get a SIGUSR1
209 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
210 Sweet to debug RL processes [MQ]
214 - Do not force experiment sizes to be expressed in kb, or it becomes
215 impossible to measure the latency this way (needs one byte-long tests)
216 WARNING: this changes the amok_bw_* function semantic. [MQ]
217 - Implements the link saturation stuff. [MQ]
218 * Peer management module:
219 New! module factorizing code that we wrote over and over [MQ].
222 * New module: cunit (my jUnit implementation in ansi C) [MQ]
223 - Test units are placed directly into the library code, they get extracted
224 automatically and placed into the src/testall binary.
225 - Convert most of the XBT tests to this system.
226 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
227 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
228 live in the same C code. This required to change a little bit the API
229 of surfxml parsing but shouldn't be an issue for end-users. [AL]
230 * New module: sparse graph structure with basic algorithms (this is work
231 in progress and the API is not considered to be frozen yet). [AL]
232 * Display more information on backtraces: source line & function names are
233 now displayed just like valgrind does (rely on addr2line tool) [MQ]
234 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
235 * Reworked a little bit some #include statements to load only required
236 headers. Some user code that relied on SimGrid to include stdlib or
237 stdio may need to include it by themselves. [AL]
238 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
240 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
241 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
242 but I guess that almost nobody used those parts. [MQ]
244 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
246 SimGrid (3.0.1) unstable; urgency=low
249 * Unfortunately, I had missed 5 misnamed functions:
250 xbt_fifo_item_t xbt_fifo_newitem(void);
251 void xbt_fifo_freeitem(xbt_fifo_item_t);
252 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
253 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
254 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
255 They're now deprecated. Please use their new versions:
256 xbt_fifo_item_t xbt_fifo_new_item(void);
257 void xbt_fifo_free_item(xbt_fifo_item_t);
258 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
259 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
260 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
262 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
263 * Documentation: xbt_log module unmercifully reworked [MQ]
264 * Bugfix: there was a problem with the ending of contexts with
265 the pthread backend. It caused some weird deadlock or behavior
266 depending on the pthread implementation. [AL]
267 * Bugfix: get the exceptions raised in the simulator repport where
268 and why they come from when they are not catched in time [AL, MQ]
271 * Bugfix: Do repport the error when two non-connected hosts try to
272 exchange data (Thanks to Flavien for stumbling into this one) [AL]
275 * Add additionnal checkings on communications. Assert that two
276 communicating hosts are connected by a set of links... [AL]
279 * Add additionnal checkings on channel values in communication [AL]
280 * New: MSG_task_get_source to see on which host a task was generated [HC]
281 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
282 the number of tasks waiting to be received on channel and sent
284 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
285 waits for the first task coming from a given host.. [AL]
287 GRAS new functionnalities: [MQ]
288 * Enhance the parsing macro to allow the size of multidimentional objects
289 to be given thru annotations.
290 * New example (and documentation): Matrix Multiplication a la RPC
291 (as when I was young!) and fix a bunch of bugs found on the way.
293 GRAS performance improvements: [MQ]
295 * Reduce the amount of cbps creation/destruction by making it static to
296 datadesc_send/recv() and using a (newly created) cbps_reset (based on
299 * Change libdata to a set so that we can search for stuff by ID (and thus
300 reduce the insane amount of dict lookups)
303 * Actually implement gras_datadesc_copy() so that we don't have to mimick
304 RL communication on top of SG since it's so uneffective.
305 It may also be used for inter-thread communication in RL, one day.
306 * Use gras_datadesc_copy() to exchange messages on top of SG
308 - improve message exchange performance on top of SG
309 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
310 * Don't exchange on the network the size of the used part of buffer,
311 instead, specify the possible buffer size to read().
313 - reduces the amount of read/write calls (one pair per exchange)
314 - reduces the amount of exchanged data (the size)
315 - allows to retrieve all arrived data on receiver side, if we don't need
316 it right now (subsequent read will peek the buffer)
317 - allows the receiver to proceed with the begining of the stream before
318 everything is arrived
319 - make it possible to build an iov transport (using readv/writev)
321 - take care of the data with non-stable storage (like stacked data),
323 * If possible, TCP send uses vector I/O (when writev() is here)
324 - Don't use it for receive since we send data sizes and data on the
325 same stream, so we wouldn't be able to chain large amount of chunks
326 before having to flush the stuff to read the size.
327 * Rework the transport plugin mecanism to simplify it and reduce the
328 amount of pointer dereferencement when searching for the right function
331 * I guess that now, we do almost as few system calls as possible while
332 doing as few data copy as possible.
334 To improve it further, we could try to send all the sizes first and then
335 all the data (to use iov on receiving size), but it's only a partial
336 solution: when you have 2 dimensional data, the sizes of the second
337 dimension is data of the first dimension, so you need 3 streams.
339 I'm not sure the potential performance gains justify the coding burden.
341 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
343 SimGrid (3.00) stable; urgency=low
346 * New! Give the possibility to hijack the surf parser and thus bypass
347 MSG_create_environment and MSG_launch_application. Have a look at
348 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
350 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
352 SimGrid (2.96) unstable; urgency=low
357 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
358 This deprecates the xbt_error_t mecanisms.
359 It modifies (simplifies) all XBT and GRAS API.
360 MSG API keeps unchanged (exceptions raised by XBT are catched from
361 within MSG and masked with existing error handling facilities)
364 * New! Add a FATPIPE model. [AL]
365 * New! Add a parallel task model. [AL]
366 * New! Add automatically a loopback interface (in the default
367 network model) if none was precised.
370 * Bugfix: MSG_process_resume now works with the current running process.
372 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
373 * Modification of MSG_task_get_compute_duration. Once a task has been
374 processed, the value returned by this function is now equal to 0. [AL]
375 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
376 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
377 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
378 of a m_task. For now, MSG_task_cancel only works with computation
380 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
381 of the processor (in Mflop/s) regardless of the current load on the
383 * API Change: use proper naming convention for MSG_getClock and
384 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
386 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
387 This function changes the priority of a computation task. This priority
388 doesn't affect the transfer rate. A priority of 2 will make a task
389 receive two times more cpu power than the other ones. This function
390 has been added to suit the needs of Nguyen The Loc and hasn't been that
391 much tested yet. So if it fails, please report it and send me your code.
393 * API Change: removed all functions and types that were marked "deprecated"
394 since many months. Renamed MSG_global_init_args to MSG_global_init.
396 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
398 SimGrid (2.95) unstable; urgency=low
401 * Steal some nice code to GNU pth to fix context detection and usage [AL]
402 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
403 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
406 * Bugfix: Allow absolute paths for platform description files [MQ]
407 * Bugfix: do free the variables after use. Leads to drastic performance
409 * Implement max_duration (ie, timeouts) on resources [AL]
412 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
414 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
415 the needed support (timeouts) [AL]
418 * Implement measurement sockets. You can now get the bandwidth between two
419 hosts thanks to AMOK (see below). [MQ]
420 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
421 dynar over the network (yeah) [MQ]
422 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
423 * simple/static token-ring example. [Alexandre Colucci and MQ]
424 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
428 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
429 type parsing. "short" and "long" modifiers were also ignored; other
430 modifier (such as reference level) are still ignored. [MQ]
431 * Embeed the buffer size within the buffer itself on SG. [MQ]
432 That way, send() are atomic and cannot get intermixed anymore (at least
433 the ones which are less than 100k; bigger messages still have the issue)
434 * Array size pushed by the field, not by the field type (or each
435 and every long int will push stuff to the cbps) [MQ]
436 * use select() to sleep since it allows to portably sleep less than one
439 GRAS (minor cleanups)
440 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
443 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
444 * type category 'ignored' killed as it was never used and were difficult
446 * whether a type can cycle or not is now a flag, leaving room for more
447 flags (as "ignored", if we feel the need one day ;)
448 * Rename raw sockets to measurement sockets since "raw" has another
449 meaning in networking community.
452 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
453 and offers features not belonging to GRAS but that most applications
454 need. One day, it may be a set of plugins loadable at runtime.
455 * New module: bandwidth
456 bandwidth measurement between arbitrary nodes running this module. [MQ]
458 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
460 SimGrid (2.94) unstable; urgency=low
462 The first beta release of SimGrid 3 !
466 * Update the main page and the FAQ. Adding references to gforge.
469 * Add a gras_os_getpid function.
472 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
473 * Extend the logs so that they also print PID, hostname, date, ... if
475 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
476 and kill the old version which were in testsuite/
477 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
481 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
482 for users. Instead, each programming environment (GRAS, MSG,...) use it
483 when needed to provide such a feature to users.
484 Don't shortcut the mecanism or you will also shortcut the virtualization
485 you need on the simulator.
489 * Cleanups in configury with regard to compile optimization/warning flags.
490 Also add -fno-loop-optimize to any powerpc since it's the optimization
491 killing gcc (< 3.4.0).
492 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
493 needed by MSG examples complications
494 * Borrow configury beautifications from PHP
497 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
498 warning (thanks loris for stumbling into this one).
499 * Bugfix: stop loading private headers (gras_config.h) from the public
503 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
504 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
505 RL would imply a DNS resolver, which is *hard* to do in a portable way
506 (and therefore delayed).
507 * Implement a real timer mecanism and use it in timing macros. This allows
508 to avoid rounding errors and get a 0.000005 sec precision in timing
509 macros. While I was at it, various cleanups:
510 - allow to declare more than one timed section per file (fix a stupid bug)
511 - move some private declaration to the right place
512 - merge conditional execution and timing macros into emulation module
513 - document the module
514 - make sure the module cleanups its mess on gras_exit
515 * Documentation improvements:
516 - (new) how to compile applications using GRAS
517 - (new) emulation support (timing macros)
519 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
521 SimGrid (2.93) unstable; urgency=low
523 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
526 - Use Paje properly where used. Still to be sanitized properly.
527 - Portability fix: Add an implementation of the contexts using pthread
531 - Add xbt_procname(): returns the name of the current process.
532 Use it to show the current process's name in all logging.
534 - fix detection of older flex version and the reaction, since we do
535 depend on modern ones (we use lex_destroy)
536 - Better separation of SG and RL in the libs: remove all simulation code
537 from libgras. As a result, this lib is now only 200k when stripped.
538 Some of the xbt modules may also be duplicated (two sets and such) and
539 should be cleaned/killed before SG3.
540 - Insist on using xlC on AIX because of weird problems involving gcc there.
541 - Cleanup the make remote stuff. This is now done by scripts
542 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
543 mainly for our private use, but we're working on changing them to user
546 - Bugfix: flush the socket on close only if there is some *output*.
547 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
549 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
552 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
554 SimGrid (2.92) unstable; urgency=low
556 Alpha 3 on the path to SimGrid 3
560 - New! First try of benchmarking macros.
561 - New! First try so that gras_stub_generator generate deployment and
562 remote compilation helpers.
564 - Bugfix: Initialization fix in msg_test.
568 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
570 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
572 - API Change: gras_os_sleep to take the amount of seconds as a double.
573 Accepting an int was error prone since it was the only location where
574 seconds were coded as such. It leaded to damn rounding errors.
575 - Bugfix: Hard to belive that timers ever worked before this.
577 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
579 SimGrid (2.91) unstable; urgency=low
581 Alpha 2 on the path to SimGrid 3
585 - Bug fix in the lmm_solver.
587 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
588 through the function MSG_paje_output.
589 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
590 - It is possible to bound the rate of a communication in MSG with
591 MSG_task_put_bounded() (was already in the previous version but I had forgotten
592 to write it in the changelog).
593 - Bug fix to let GRAS run on top of MSG until we move it directly on top
598 - Various cleanups to the autotools stuff
599 - Begin to move Gras examples to examples/gras/
600 - Let make distcheck work again (yeah!)
602 - documentation overhauled using doxygen.
603 gtk-doc-tools is dead in SimGrid now.
604 - Automatically extract all existing logging categories, and add the list
605 to the documentation (long standing one, to say the less)
607 - Cleanup the known architecture table. Reorder the entries to group what
608 should be, and use a more consistent naming scheme.
609 (some of the test dataset are still to be regenerated)
610 - New! Allow library to register globals on each process just as userdata
612 This is implemented using a xbt_dict and not a xbt_set, so we loose the
613 lookup time (for now).
614 Use it in msg and trp.
615 This cleans a lot the internals and helps enforcing privacy of the
616 headers between the gras components.
617 - New! Add a timer mechanism, not unlike cron(8) and at(1).
618 - Bugfix: gras_os_time was delirious in RL.
619 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
621 - Reenable GRAS now that it works.
623 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
625 SimGrid (2.90) unstable; urgency=low
627 Alpha 1 on the path to SimGrid 3
629 * It is a long time since the last release of SimGrid. I'm sorry about
630 that but as I had told you, I was rewriting a lot of things. I apologize
631 to those who had been reporting bugs to me and that I had not answered.
632 If your bug is still in the new version, please tell me. Here is a
633 summary of the main changes.
635 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
636 lead by Martin Quinson. As a consequence SimGrid gains a lot in
637 portability, speed, and a lot more but you'll figure it out later.
638 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
639 I wanted to release the new MSG as soon as possible and I have
640 broken GRAS, which is the reason why, for now, only MSG is fully
641 functional. A laconic description of these projects is available
642 in the documentation.
644 * REVOLUTION 2: I have removed SG and I am now using a new simulation
645 kernel optimized for our needs (called SURF but only the developers
646 should use it). Hence, MSG is now roughly 30 times faster and I think
647 that by rewriting a little bit MSG, I could event speed it up a little
648 bit more. Beside the gain in speed, it is also much easier to encode a
649 new platform model with SURF than it was with SG. More to come...
651 * REVOLUTION 3: I have tried to change a little as possible the API of
652 MSG but a few things really had to disappear. The main differences
653 with the previous version are :
654 1) no more m_links_t and the corresponding functions. Platforms are
655 directly read from a XML description and cannot be hard-coded
656 anymore. The same format is used for application deployment
657 description. The new format is described in the documentation.
658 Have a look in tools/platform_generation. There is a tiny script
659 that converts from the old platform format to the new one. Concerning
660 the application deployment format, parsing the old one is tricky.
661 I think most of you should however be able to convert your files. If
662 it is really an issue, I can write a C code that does the conversion.
664 2) the toolbox tbx does not exist anymore. We now have a library
665 with much more data-structures but without the hash-tables (we have
666 dictionaries that are much faster).
668 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
670 *****************************************************************************
671 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
672 * don't feel like converting the oldies. (Mt) *
673 *****************************************************************************
676 Version 2.90: "the long awaited one"
677 - Finished rewriting and debugging MSG. Rewrote the documentation.
678 - disable GRAS for now since it needs to be ported to the newest SG
681 - Finish the port to windows (using mingw32 for cross-compile)
684 - Main loop and datastructures of SURF. A cpu resource object is
685 functional. Surf can thus be used to create cpu's with variable
686 performance on which you can execute some actions.
688 2004-11-15 Martin Quinson
689 - Port to ARM. Simply added the alignment and size descriptions. Should
690 work, but the ARM machines are so slow that I didn't had the opportunity
691 to 'make check' over there yet.
693 2004-11-15 Arnaud Legrand
694 - Trace manager now written. It uses a heap structure and is therefore
695 expected to be efficient. It may however be speeded up (particularly
696 when many events occur at the same date) by using red and black
697 trees. One day maybe...
698 - Max-min linear system solver written. It uses a sparse matrix
699 structure taking advantage of its expected use. Most operations are
700 O(1) and free/calloc are called as few as possible. The computation of
701 the minimum could however be improved by using a red and black tree
704 2004-11-03 Arnaud Legrand
705 - Rename every gras_* function that was in xbt/ to its xbt_
707 - Add a heap and a doubly-linked list to xbt
708 - Added a dichotomy to the dictionaries. make check works as well before
709 so I assume that the patch is correct. I do not know however if things
710 run effectively faster than before now. :)
712 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
713 SimGrid, and the version number is bumped to 2.x
715 2004-10-29 Martin Quinson
716 - Introduction of the remote errors.
717 They are the result of a RMI/RPC on the remote machine.
718 ErrCodes being scalar values, you can't get the host on which those
719 errors did happen. Extending the error mechanism as in Gnome is possible.
720 No idea yet whether it is a good idea.
722 2004-10-28 Martin Quinson
723 - Interface revolution: the Starred Structure Eradication.
724 I used to do typedef struct {} toto_t; and then handle *toto_t.
725 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
726 - ???_t is a valid type (builded with typedef)
727 - s_toto_t is a structure (access to fields with .)
728 - s_toto is a structure needing 'struct' keyword to be used
729 - e_toto_t is an enum
730 - toto_t is an 'object' (struct*)
732 typedef struct s_toto {} s_toto_t, *toto_t;
733 typedef enum {} e_toto_t;
734 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
735 s_toto_t) is private.
737 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
738 so that it can set the variable to NULL. It was so for dicts and sets,
739 it changed for dynars.
741 - Fix a bunch of memleaks in dict_remove
742 - Fix a bug in sg/server_socket opening: it failed all the time.
744 2004-10-07 Martin Quinson
745 - Speed up dynar lookup operation a bit.
747 gras_dynar_get is dead.
749 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
750 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
751 (which gives you the address of the stored data).
753 gras_dynar_get_as is an helpful macro which allows you to retrieve a
754 copy of the data using an affectation to do the job and not a memcpy.
756 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
757 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
759 It does not really speedup the dynar test because they are
760 setting elements all the time (and look them seldom). But the dict does
761 far more lookup than setting.
763 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
765 2004-10-05 Martin Quinson
766 - Allow to (en/dis)able the cycle detection at run time.
768 Whether we should check for cycle or not is now a property of each
769 datatype. When you think there may be some cycle, use datadesc_cycle_set.
770 datadesc_cycle_unset allow to remove this property when previously set.
772 Note that the cycle detection is off by default since it impacts the
773 performance. Watch the data you feed GRAS with ;)
775 This property is hereditary. Any element embedded in a structure having it
776 set have it set for the time of this data exchange.
778 You should set it both on sender and receiver side. If you don't set it on
779 sender side, it will enter an endless loop. If you forget on receiver
780 side, the cycles won't be recreated after communication.
782 - Header reorganization.
783 Kill gras_private.h, each submodule must load the headers it needs.
785 2004-10-04 Martin Quinson
786 - Interface revolution: do not try to survive to malloc failure.
788 Now, gras_malloc and friends call gras_abort() on failure.
789 As a conclusion, malloc_error is not a valid error anymore, and all
790 functions for which it was the only gras_error_t return value are
791 changed. They now return void, or there result directly.
792 This simplify the API a lot.
794 2004-09-29 Martin Quinson
795 - Re-enable raw sockets.
796 Created by gras_socket_{client,server}_ext;
797 Used with gras_raw_{send,recv}
800 It should allow to kill the last bits of gras first version soon.
802 This is not completely satisfactory yet (duplicate code with
803 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
806 - Simplify transport plugin (internal) interface by not passing any
807 argument to _server and _client, but embedding them in the socket
810 2004-09-28 Martin Quinson
811 - Finish the port to AIX.
812 autoconf was my problem (segfault within the malloc replacement
813 function. No idea why)
815 2004-09-16 Martin Quinson
816 - Fix some size_t madness on 64bit architectures.
818 2004-09-08 Martin Quinson
819 - Reduce the number of system headers loaded, overload some more system
820 calls (such as malloc to cast the result of the system one, and work
822 - Fix and reintroduce the config support
824 2004-09-07 Martin Quinson
825 - Source code reorganization to allow Arnaud to surf all over there.
826 - Allow to document the logging categories.
827 - Remove all uppercase from logging categories and useless cleanup in names.
829 2004-08-18 Martin Quinson
830 Version 0.6.2 (protocol not changed; API changed)
831 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
832 gras_error_t), and NULL when not found. Functions expecting a msgtype
833 as argument (msg_wait; msg_send) deal with NULL argument by providing a
834 hopefully usefull message.
835 - Portability to prehistoric sparcs again
837 2004-08-17 Martin Quinson
838 Version 0.6.1 (protocol not changed; ABI not changed)
839 - prealloc some buffers to speed things up
841 2004-08-11 Martin Quinson
842 Version 0.6 (protocol not changed; ABI expended)
843 - The parsing macro can deal with the references, provided that you add
844 the relevant annotations (using GRAS_ANNOTE(size,field_name))
846 2004-08-09 Martin Quinson
847 Version 0.5 (protocol not changed; ABI changed)
848 - Allow to off turn the cycle detection code in data exchange at
849 compilation time. It should be at run time, but I'm short of time (and
850 the config stuff is still broken). That way, we keep dict out of the
851 critical path, which is good because the performance is poor:
852 - search not dichotomial yet
853 - dynar give no way to access their content and memcpy everytime
854 - In composed data description (struct, ref and so on), stop foolness of
855 keeping the subtype's ID, but store the type itself. This keeps sets out
856 of the critical path, which is good since they rely on dynar and
857 dictionnaries. The only loose of that is that we cannot detect the
858 redeclaration of a structure/union with another content (but I'm not sure
859 the code detected well this error before anyway). We still can detect
860 the redefinition discrepancy for the other types.
861 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
862 it breaks the code because of type-punning used all over the place).
863 This breaks on all non-gcc architectures (for now).
865 All those changes (plus the buffer of last time) allow me to gain 2 order
866 of magnitude on cruel tests consisting of 800000 array of integers on two
867 level of a hierarchical structure (200 secondes -> 4 secondes)
870 - the selector of reference must now return the type it points to, not
873 2004-08-06 Martin Quinson
874 Version 0.4 (protocol changed; ABI not changed)
875 - Allow to pass --gras-log argument to processes in simulation mode. Really.
876 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
877 - Implement a buffer transport, and use it by default (it relies on tcp in
878 real life and on sg in simulation).
879 That's a bit hackish since I had a new field to the structure to store
880 its data without interfering with the subtype ones. Inheritance
881 is tricky in C. And that's a kind of reverse inheritance with one class
882 derivating two classes. Or maybe a game with java interfaces. Anyway,
883 that's damn hard in C (at least).
884 Moreover, I got tired while trying to ensure plugin separation and
885 genericity in SG mode. MSG wants me to do weird things, so let's go for
886 cruel hacks (temporarily of course ;).
887 See comment in transport_private.h:71
888 - do not include all the _interface headers in private but in the files
889 which really need them (to cut the compilation time when they are
892 2004-07-26 Martin Quinson
893 Version 0.3 (protocol not changed; ABI changed)
894 - Major overhault of the datadesc interface to simplify it:
895 - shorted the function names:
896 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
897 - add a trivial way to push/pop integers into the cbps without malloc.
898 This allows to make really generic sub_type description, which simply
899 pop their size of the stack.
900 - add a function gras_datadesc_ref_pop_arr() which does what users want
901 most of the time: Declare a dynamic array (which pops its size of the
902 stack) and declare a reference to it. Poor name, but anyway.
903 - kill the post-send callback, add a post-receive one
905 2004-07-23 Martin Quinson
906 Version 0.2 (protocol changed; ABI changed)
907 - add some testing for cpbs in the test cases, and fix some more bugs.
908 This invalidate again the little64 data file, since I cannot regenerate
910 - remove an awfull optimization in the logging stuff, allowing me to:
911 - understand it again
912 - learn gcc how to check that the argument match the provided format
913 - fix all errors revealed by gcc after that
914 - internal keys of dict are not \0 terminated. Deal with it properly in
915 loggings instead of segfaulting when the user want to see the logs :-/
917 2004-07-22 Martin Quinson
918 - Fix some stupid bug preventing cbps (callback postit) from working
920 2004-07-21 Martin Quinson
921 - Some documentation cleanups
922 - remove the useless last argument of msgtype_declare
923 - rename the Virtu functions to fit into the 'os' namespace
924 - move headers src/include -> src/include/gras/ and stop fooling with
925 gras -> . symbolic link
926 - make distcheck is now successful
928 2004-07-19 Martin Quinson
930 - Build shared library also
931 - Install html doc to the right location
932 - stop removing maintainer files in make clean
933 - build tests only on make check
935 2004-07-13 Martin Quinson
937 - No major issue in previous version => change versionning schema
938 - Re-enable little64 convertion test now that Abdou kindly regenerated the
939 corresponding dataset.
941 2004-07-11 Martin Quinson
943 - Get it working with any kind of structure (we can compute the padding
944 bytes remotely for all the architectures I have access to)
945 - Implement the structure parsing macro (still not quite robust/complete)
946 - Improvement to the remote testing toysuite
948 2004-07-10 Martin Quinson
950 - get ride of a bunch of deprecated macros
951 - actually run the test for two-compliment, not only compile it :-/
952 - test whether the structures get packed (and bail out if yes. Damn.
953 Alignment is a serious matter)
954 - test whether the structures get compacted (but respecting the alignment
955 constraints of each types)
956 - test whether the array fields of structures can straddle alignment boundaries
958 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
959 (took me 2 hours to find that bug, looking at the wrong place)
960 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
961 before sending/receiving and are used to compute the offsets of fields
962 - Given that padding size depend even on compiler options, keep track of
963 alignment and aligned_size only for the current architecture. Not a big
964 deal since we send structure fields one after the other (seems
966 - Add the datastructure used for IEEE paper by the PBIO guys to the test
967 program, let it work on linux/gcc/little32. portability todo.
969 2004-07-08 Martin Quinson
970 - import and improve remote compilation support from FAST
971 - make sure make check works on half a dozen of machines out there
973 2004-07-07 Martin Quinson
974 Let's say it's version 0.0.3 ;)
975 - Implement conversions (yuhu!)
976 - Let it work on solaris (beside conversion, of course)
977 - Stupid me, using rand() to generate the conversion datatests in not wise.
979 2004-07-06 Martin Quinson
980 - Let make dist work, since I'm gonna need it to compile on remote hosts
981 - Let Tests/datadesc_usage write the architecture on which the file was
982 generated as first byte.
983 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
984 architecture descriptions.
985 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
986 on those architectures.
987 - Optimization: send/recv array of scalar in one shoot
989 2004-07-05 Martin Quinson
990 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
992 - Plug a whole bunch of memleaks
993 - each process now have to call gras_{init,exit}. One day, their log
994 settings will be separated
995 - Continue the code factorisation between SG, RL and common in Transport.
997 2004-07-04 Martin Quinson
999 - Redistribution between SG and RL.
1000 We wanna have to accept in SG, so move accepted related parts of RL in
1001 the common part. (more precisely, the dynar of all known sockets is no
1002 more a static in transport.c, but part of the process_data)
1004 [gras_stub_generator]
1005 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
1007 2004-07-03 Martin Quinson
1008 - Create a new log channel tbx containing dict, set, log, dynar (to shut
1009 them all up in one shot)
1011 - Fix the ugly case of reference to dynamic array.
1012 - New (semi-public) function gras_datadesc_size to allow the messaging
1013 layer to malloc the needed space for the buffer.
1015 - gras_socket_close now expect the socket to close (and not its address to
1016 put NULL in it after it). This is because the socket passed to handlers
1017 is one of their argument (=> not writable).
1019 - propagate the interface cleanup from last week in datadesc, ie remove a
1020 superfluous level of indirection. User pass adress of variable
1021 containing data (both when sending and receiving), and not of a variable
1022 being a pointer to the data. Let's say that I like it better ;)
1023 The price for that is constructs like "int msg=*(int*)payload" in
1024 handlers, but it's a fine price, IMHO.
1026 - Let it work in RL (yuhu)
1028 2004-06-21 Martin Quinson
1030 - porting SG plugin and SG select to new standards (works almost).
1031 - plug memleaks and fix bugs around.
1034 - cleanup the prototype of data recv and force users to specify when they
1035 want to handle references to objects. Test case working even for cycles.
1036 - plug memleaks. Valgrind is perfectly ok with this.
1038 2004-06-12 Martin Quinson
1040 - cleanup the separation between plugin and main code in plugin creation
1042 2004-06-11 Martin Quinson
1044 - Reput hook for raw sockets, needed for BW experiments
1045 - kill a few lines of dead code
1046 [Data description] Interface cleanup
1047 - gras_datadesc_by_name returns the searched type or NULL.
1048 That way, no variable is needed to use a type desc once, which makes
1050 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
1051 two parameters were strings (field name, type name), leading to
1053 [Dicos] Interface cleanup
1054 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
1055 This is consistant with the dynar API.
1057 2004-04-21 Martin Quinson
1059 - Porting to new standards.
1061 - interface cleanup.
1062 There is no bag anymore, no need to take extra provision to mask the
1063 pointers behind "ID".
1064 Better splitup of functions between files create/exchange/convert.
1065 This is still a bit artificial since convert and receive are so
1066 interleaved, but anyway.
1068 - add a queued message list to procdata (the ones not matching criteria
1070 - factorize some more code between SG and RL wrt procdata
1072 - use gras_exit in example to track memleaks
1073 - get rid of gs_example now that GS is properly integrated into gras
1074 - update run_test to integrate the lastest tests (datadesc)
1076 - rename WARNINGn macros to WARNn since it prooved error-prone
1078 2004-04-19 Martin Quinson
1080 - register init/exit functions within gras module mechanism
1081 - send/receive function.
1082 Convertion is not implemented, but short-cutted if not needed.
1083 struct/array elements are sent one by one (instead of block-wise), but
1084 nobody really cares (yet). Get a prototype before optimizing.
1085 - tests (using a file socket) for DD send/receive on:
1086 - base types: int, float
1087 - array: fixed size, string (ie ref to dynamic string)
1088 - structure: homogeneous, heterogeneous
1089 - chained list, graph with cycle
1090 Believe it or not, valgrind is not too unhappy with the results. The
1091 cycle happily segfaults, but the others are ok. And I'm sick of pointers
1095 - Bugfix when using a filename explicitely (instead of '-')
1097 2004-04-09 Martin Quinson
1099 - factorize more code between RL and SG in socket creation
1100 - Complete the implementation and tests of:
1102 o file (only in RL, and mainly for debugging)
1104 I lost 3 days to design a portable address resolver, and then decided
1105 that the prototype mainly have to run on my box.
1106 Addressing portability too early may be like optimizing too early :-/
1108 - use gras_init in the Tests instead of the crappy parse_log_opt
1109 (the latter function is removed)
1110 [Conditional execution]
1111 - New functions: gras_if_RL/gras_if_SG (basic support for this)
1112 [Code reorganisation]
1113 - Get rid of libgrasutils.a since it makes more trouble than it solves.
1114 Build examples against the RL library, since there is no way to disable
1115 its creation for now.