1 SimGrid (3.10) NOT RELEASED; urgency=low
5 -- $date Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
7 SimGrid (3.9) stable; urgency=low
9 The Grasgory release: GRAS is really dead now.
11 * Complete overhaul of the internal host structures scheme.
14 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
15 was considered as experimental and badly maintained since then.
16 * Keeping it was thus a trap to our potential users, that could take
17 it instead of MSG or SMPI by mistake despite is pity state.
18 * GRAS seems to have very few users (if any), and no one volunteered
19 to maintain it further. It also induces a lot of XBT code (for
20 portability sake), that must be maintained too.
21 * For all these reasons, we killed GRAS. If someone wants to revive it
22 in the future, don't cry, our git history still remembers of GRAS.
25 * Major overhaul. Merge our documentation again as time proved that
26 splitting it was really not helping our users.
27 * Further improve the developer documentation to help newcomers
28 hacking on SimGrid itself. The user documentation (and in
29 particular, the beginner documentation) is still in a sorry state.
32 * Now works on Windows too!
33 * Much more extensive test suite, from MPICH
36 * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
37 (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
38 dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
39 * Bug fix: let task be scheduled when the last dependency to be solved is
41 * Remove SD_load_environment_script function.
42 Use the C sg_platf function if you want to declare a platform
46 * New function: MSG_process_get_number()
47 * Old function documented: MSG_config()
48 * Remove MSG_load_platform_script function
49 Use the C sg_platf function if you want to declare a platform
53 * Change the default value of the TCP_gamma constant (maximal size of TCP
54 congestion window) to a more realistic 4MiB value. If you notice changes in
55 your simulation results, you can fall back to the previous 20k tiny window
56 by adding --cfg=network/TCP_gamma:20000 on command line.
57 * (Hopefully) fix a bug wrt periodic availability and state traces
58 * Bug fix: use default values at start when first event in availability/state
59 trace is not at time 0.
62 * remove the "new_" part of function name sg_platf_new_trace_connect
63 (resulting in sg_platf_trace_connect), since it does not create
67 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
68 use case where it's really mandatory, and maintaining it was a pain in
70 * New: xbt_fifo_search(), search an item with a user-provided
71 comparison function instead of dumb pointer comparison.
74 * Fix the lua deployment:
75 Use `simgrid.init_application()` before deployment instead of
76 `simgrid.msg_register_application()` after.
79 * Transfer the tracing files into the corresponding modules.
81 -- Tue Jan 29 19:38:56 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
83 SimGrid (3.8.1) stable; urgency=low
85 The "we are told that some people want to also *install* the simgrid
88 * Add missing file "tesh.1" to the archive.
90 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
92 SimGrid (3.8) stable; urgency=low
94 The Psssshiiiit release: SimGrid jumps into the Cloud.
97 * Add an experimental interface to manipulate VMs. They are mainly
98 process groups with very few intrinsic semantic, but they should
99 allow you to build the semantic you want easily.
100 * New function: MSG_host_set_property_value()
101 * New function: MSG_process_on_exit(). To clean memory in all cases.
102 * Bug fixes that made the host (and link) failures unusable.
103 * Add a way to auto-restart process when the host in which they are
104 executing comes back (ON_FAILURE="RESTART" on deployment file,
105 MSG_process_auto_restart_set).
106 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
107 please stop using the old ones, they are DEPRECATED.
109 * Deprecate functions MSG_global_init() / MSG_global_init_args()
110 Please use MSG_init() instead. (reducing the amount of entry
111 points in the library helps us).
112 * Make it impossible to link against the wrong version of the lib
113 * Deprecate MSG_clean(). No need to call it anymore.
114 * Function MSG_get_host_number() is not deprecated anymore.
117 * Split the doc into a user guide and a reference guide.
118 * Start a developper guide to help people hacking on SimGrid.
121 * Enable tracing by default. This modules rocks you should use it.
122 * Remove option custom_flags. Now use environment variables CFLAGS
124 * Use default cmake things to detect lua instead of home grown ones.
125 * New option "enable_mallocators" to disable mallocators, for debugging
126 purpose ("on" by default).
129 * Bug fixes around the resource failures: don't let the processes
130 survive the host they are running onto.
131 * Add an interface to auto-restart processes when the host in which they are
132 executing comes back.
133 * Ensures that SIMIX_clean is called automatically. It's not part of
134 the public interface anymore (bindings should be updated).
137 * Bug fix for when SD_Simulate is called with a positive value: be careful
138 when comparing doubles. Sometimes they are different for non significant
140 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
141 parallel task whose initial work is distributed among host according
142 to the Amdahl's law. Such tasks are created with a parameter alpha
143 that corresponds to the non-parallelizable part of the computation.
144 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
145 between two sets of workstations assuming a 1D block distribution (each
146 workstation owns a similar share of data) on both sides.
148 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
149 Data redistribution will be automatically scheduled once parent and child
150 are both scheduled. The filling of computation_amount and
151 communication_amount structures is now done seamlessly thanks to the chosen
153 * New function SD_workstation_dump to display various information
154 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
155 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
156 bandwidth on the route onto which the task is scheduled and the amount of
158 To divide the nominal bandwidth by 2, the rate then has to be :
159 rate = bandwidth/(2*amount)
160 * Compute tasks that have failed can now be rescheduled and executed again
161 (from their beginning)
162 * Increasing source code coverage (src/simdag is now covered at 95.8%
166 * Re-implement time-independent trace replay using SMPI (at the
167 smpi_smp_* level) instead of MSG. This should replace
168 examples/msg/actions/actions.c
169 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
170 hindexed and structs)
171 * Implement the exchange of non-contiguous data.
172 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
173 * Correct behavior of smpi/sender_gap and set its default value to 0
174 * Add option to asynchronously send small messages to allow better
175 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
176 specifies the size in bytes under which messages will be asynchronously sent.
177 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
178 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
181 * New C interface to define a platform: XML is now optional.
182 For more info, please check include/simgrid/platf.h.
183 * New interface to define random platforms from the C:
184 For more info, please check include/simgrid/platf_generator.h and
185 examples/msg/masterslave/masterslave_platfgen.c
186 * Export a sg_cmdline dynar containing all the arguments we got from
190 * Two new tracing options for adding comments to trace file so you
191 can track your experiments (see --help-tracing for details).
192 * New option to generate a impoverished trace file (--cfg=tracing/basic:1)
193 * Adding the SimGrid version that generated the trace file as a comment.
194 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
195 * Fix to avoid key clashes on Paje links
196 * Other minor fixes related to the Paje specification
199 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
200 and renamed to xbt_str_hash() and xbt_str_hash_ext().
201 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
202 * Greatly improve the robustness of mmalloc to user errors (such as
203 using an area after freeing it, or freeing it twice)
205 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
207 SimGrid (3.7.1) stable; urgency=low
210 * Restore the prototype of MSG_process_create_with_environment() to
211 the pre-3.7 situation by removing the kill_time argument.
212 * Add a MSG_process_set_kill_time() function instead.
215 * Fix weird behaviors when dealing with parallel tasks.
218 * Simgrid is now built as a dll.
219 * Simgrid-java now works on Windows.
220 * Simgrid-Java is now included into Windows package.
223 * First pre-build package for MacOSX.
226 * Fix compilation when using MSG_USE_DEPRECATED.
227 * Fix some compilation issues on Macs and Windows.
228 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
229 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
231 We discovered that the Lua console is broken, but we are missing the
232 manpower to fix it right now. The problem existed in 3.7 too, so we
233 are not blocking the release for that. Sorry if you depended on this
234 feature, any help would be really welcome.
236 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
238 SimGrid (3.7) stable; urgency=low
240 The "spring cleanups (before the next Big Project kicks in)" release.
243 * We can specify the SMPI latency/bandwidth factor with command line
244 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
245 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
246 You can also use the "config tag" from platform file by adding this line
247 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
248 (see "example/platforms/tag_config.xml" to use "config tag").
249 Note that the command line supersedes the platform file configuration.
250 * Change the correction factors used in LMM model, according to
251 the latest experiments described in INRIA RR-7821.
252 Accuracy should be improved this way.
253 * Use the partial invalidation optimization by default for the
254 network too. Should produce the exact same results, only faster.
255 * Major cleanup in surf to merge models and split some optimization
256 mechanisms from the core of the models. As a result you can now
257 specify which model to use (e.g., --cfg=network/model:LV08
258 --cfg=cpu/model:Cas01) and which optimization mode to use
259 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
260 Incompatible combinations should err at initialization. See
261 --help-models for the list of all models and optimization modes.
262 * The CLM03 workstation model was dropped for simplicity because it
263 used the deprecated CM02 network model. Use default instead.
264 * Rename the TCP_gamma configuration option to network/TCP_gamma
265 * Rename the coordinates configuration option to
266 network/coordinates, and document it
267 * Use now crosstraffic keyword instead of the terribly misleading
268 fullduplex keyword. It is activated by default now in the current
269 default model, use --cfg=network/crosstraffic:0 to turn it off.
270 * Ongoing refactoring the model parsing to make XML files optional
271 See include/simgrid/platf.h for details (still to be completed)
274 * Major overhaul of the documentation. Almost instructive now :/
275 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
276 functions and friends. This interface was considered as
277 deprecated since over 2 years, it's time to inform our users that it is.
278 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
279 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
280 use these (crappy) functions in your code.
281 These functions will be removed soon. Stop using them now.
282 * Deprecate MSG_get_host_{table,number}
283 Implement MSG_hosts_as_dynar() instead.
284 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
285 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
288 * Stabilize the parallel execution mode of user contexts
289 * Introduce configuration variables to control parallel execution:
290 - contexts/synchro: Synchronization mode to use when running
291 contexts in parallel (either futex, posix or busy_wait)
292 - contexts/parallel_threshold: Minimal number of user contexts
293 that must be part of a scheduling round to switch to parallel
294 execution mode (raw contexts only)
295 * Fix bugs that prevented to use suspend/resume along with
296 synchronization structures.
297 * Fix bugs in process termination that lead to invalid memory access
298 in very specific conditions.
301 * Introduce a parallel mode for the models (controlled by surf/nthreads
302 configuration item). In our tests, running the models in parallel
303 never lead to any speedups because they are so fast that the gain
304 of computing each model in parallel does not amortizes the
305 synchronization costs, even when ultra fast futexes are used.
306 This is released anyway because YMMV.
309 * Performance boost by using a swag internally to compute the set of
310 tasks that are finished and should constitute the return value of
314 * Enable it by default now that it is considered rather stable.
317 * Documentation of the tracing functions.
318 * Performance gains when tracing categorized/uncategorized resource
319 utilization by avoiding calls to get route when updating resource
320 variables. LMM constraints are being used instead.
321 * API changed to set task categories. Use MSG_task_set_category instead
322 of TRACE_msg_set_task_category, and SD_task_set_category instead
323 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
324 * Bugfix for graphicator, routes not correctly obtained, memory leaks
325 * Examples for link user variables added (see at examples/msg/tracing/)
326 * Deprecated function TRACE_msg_set_process_category completely removed
327 * Trace header updated according to the latest Paje file format
328 * Tracing network lazy updates, no longer obligate users to use full updates
329 * --cfg=tracing/platform:1 also registers power/bandwidth variables
330 * Experimental: let user code declare/set/push/pop application states for hosts
331 * API changed to allow the manual creation of graph configuration files
332 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
335 * Improve the API of Lua MSG bindings, using the Lua spirit.
336 * Each simulated process now lives in its own Lua world (globals are
337 automatically duplicated). It helps writing simulators. Will allow
338 to run Splay programs within SimGrid in the future.
339 * Add a Chord example in Lua, equivalent to the MSG one.
342 * Start the implementation of a solution to express temporal
343 properties, not only local assertions. This is still an
344 experimental work in progress, stay clear from it to be safe.
348 - Add new runtime parameters --help-logs and --help-log-categories
349 to display informations about supported logging parameters and
351 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
352 don't exists anymore.
353 * Mallocators: allow value NULL for the reset function.
355 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
356 create homogeneous dictionaries, where all the elements share the
357 same free function. Non homogeneous dictionaries will be
358 deprecated in the next release.
359 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
360 - Multi-level dictionaries are deprecated.
362 - new function xbt_dynar_search_or_negative() that is useful when
363 you have less than 2 million elements in your dynar and don't
364 want of the extra complexity of catching exceptions when the
365 element is not found.
367 - Make xbt_os_thread module (for thread portability) public.
368 Documentation is still to come, sorry.
370 - Cleanups and simplifications to make it maintainable again.
371 - Exotic features (such as memalign and valloc) were removed.
372 - The metadata were extended and improved so that the
373 model-checker becomes able to explore and inspect the heaps.
374 - This may induce a performance drop when enable_model-checking is
375 ON in cmake (even if it's not used in the simulation), but it is
376 necessary at this point to get MC working.
378 Turn model-checking OFF if simulation performance matters to you.
379 Not enabling it at runtime is not enough, disable it in cmake.
381 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
383 SimGrid (3.6.2) stable; urgency=low
385 The "Not coding new stuff allows to polish old things" release.
388 * New bindings to the NS3 packet level simulator (experimental)
389 * Use the raw (efficient) execution contexts instead of the sysv
390 (portable) ones when possible.
391 * libpcre is now mandatory in any cases since not using it led to
392 severe performance loss and possibly other issues
393 * Update the XML platforms:
394 - G5K: include the latest machine in Nancy
395 - GridPP and LCG: new platforms
396 * Documentation was partially updated, at least (more to come)
398 Bug fixes, cosmetics and small improvements
399 * Free terminated processes before the end of the simulation to avoid
400 exhausting the memory of users having very dynamic amount of
402 * Bug fix and cosmetics about canceling non-running tasks
403 * Bug fix about the dot loader's issues when using libcgraph
406 * Create an installer for windows with nsis (amd64 and win32)
407 - Add an hello world project to illustrate simgrid project creation.
408 - Embed libpcre into the Simgrid installer to avoid
409 its compilation burden
410 * The raw execution contexts should work on Apple now
411 * Port to Windows 64 bits
412 - Sysv contexts now have an implementation for this arch
413 - GRAS communication features now support this arch
414 * Drop support for borland compiler on windows
415 - this code was not maintained, and we kinda depend on gcc nowadays
416 * Fix portability issues on kfreebsd/gnu: build error about semaphores
417 * Fix portability issue on unstable ubuntu: linker became picky on
420 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
422 SimGrid (3.6.1) stable; urgency=low
424 The "Oops, we broke Macs too" release
427 * Fixed contexts detection so that raw ones are used when possible
428 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
429 leads to a strange error, with user code segfaulting sometimes when
430 the generated code is not perfectly aligned (which is not
431 controllable from the user side, depends on the amount of code)
434 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
436 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
438 SimGrid (3.6) stable; urgency=medium
440 The Summer Release, also known as the "OMG! They Killed Kenny!" version
443 * Bindings now constitute their own package, separated from the main one.
444 Rationale: reduce our maintenance nightmare by reducing the module coupling
445 They will soon be released on their own on gforge.
447 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
448 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
450 GRAS: It is not considered as stable anymore, but experimental. Sorry.
451 * It's not quite deprecated for now because we have no replacement,
452 but it may soon become the case.
455 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
456 * Fortran: New user-level cache variable to store the rank of the running
457 process. This improves performance by an order of magnitude.
458 * C: New coccinelle script to automatically locate and modify global and
459 local static variables.
460 * Improved SMPI network model with a sender-side gap to account for multiple
464 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
465 only say if a communication is finished, no matter whether it succeeded or
466 failed. You can call MSG_comm_get_status() to know the status of a finished
468 * New function MSG_task_dsend() to send a task and detach it. When a
469 communication is detached, you are never notified of its success or failure
470 and the memory is released automatically once it is finished. This function
471 is useful when you don't care about the end nor the success of a
473 * Change the prototypes of action replay. Sorry for inconvenience,
474 but this is really more efficient this way (and to adapt your code,
475 you just have to fix the initialization, that shouldn't be too long)
476 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
477 ever managed to do anything useful with it.
478 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
479 takes a dynar of communications. It returns immediately and gives the
480 index of a finished communication (if any).
481 * New example: a basic implementation of the Chord P2P algorithm.
484 * New model for multi-core CPUs. You can now use the core attribute to
485 precise the number of cores of a host. This is a basic model. Every
486 process running on the host receives at most the power provided in
487 the DTD (throughput<=power). Total throughput of process cannot exceed
489 * New peer tag. This peer tag creates a tiny AS comprising a host and a
490 router linked by an up-link and a down-link (possibly asymmetrical).
491 This kind of pattern allows to easily build last-mile model style platforms.
492 Aggregating such patterns in a rule-based AS is thus the technique of
493 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
494 * New model for Vivaldi routing. We transformed the Vivaldi network model
495 into a Vivaldi routing model (based on the rule-based model). This allows to
496 combine Vivaldi based latencies with last-mile platforms.
499 * Added a check for NaN of IEEE754 infinite in the double entries of
501 * Introduce a new context factory "raw", highly inspirated from the
502 ucontext factory, but using manually crafted functions in assembly to
503 do the work in an efficient manner.
504 * Allow to change the used context factory at run time, not only at
505 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
506 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
507 contexts at runtime (only with raw contexts or ucontexts).
508 * Completely rewrote this module to allow parallel execution of user
509 processes. Use --cfg=contexts/nthreads:N to execute user processes
510 with N parallel threads (the default is 1, meaning no parallelism).
511 * Allow to decide dynamically between sequential and parallel modes.
512 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
513 processes in parallel only when their number is greater than or equal to P
515 * Added a check for NaN of IEEE754 infinite in the double entries of
519 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
520 won't output the state of processes when interrupted with Ctrl-C
521 * Add a new function xbt_dynar_to_array that transforms a dynar into a
522 NULL-terminated array. This may solve backward compatibility issues
523 due to the change to return type of SD_simulate. See also:
524 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
525 * Add new macros with variable number of arguments.
526 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
527 - in xbt/asserts.h: xbt_assert
528 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
529 - in xbt/ex.h: THROWF and RETHROWF.
530 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
532 * Change xbt_die() to accept a format string with arguments, just like printf.
533 * New data structure: xbt_lib_t, like a dict but more general and with better
537 * New configuration options
538 Options triva/categorized and triva/uncategorized can be used to generate
539 graph configuration files for Triva visualization tool.
540 * Configuration option tracing/platform is renamed to tracing/categorized
541 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
542 * New TRACE_user_link_variable interface:
543 User provides the name of the link and the tracing variable to attach to it
544 * the declaration of tracing categories must be done after the environment
546 * simpler tracing interface, just one way to declare categories
547 TRACE_category or TRACE_category_with_color, it is up to you
548 * links in the trace file are again identified by their names
549 * trace contains the full platform hierarchy exactly as declared using the ASes
550 * Options tracing/msg/[task|process]:1 groups the process by hosts
551 for both cases, tasks and processes must have names that are unique during the simulation
552 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
553 * The experimental option tracing/msg/volume is deprecated
554 its functionality may be reincorporated if needed
556 The tracing generates a trace file with unordered timestamped events,
557 because of the way the core simulator (surf) works. A script available
558 at the tools directory (fix-paje-trace.sh) can be used to put the events
559 in order. We have changed the tracing so it can generate ordered timestamped
560 events in the final trace, but depending on the simulator (and how much time
561 is simulated) that can lead to a huge memory utilization. It is deactivated
562 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
565 * Define a SIMGRID_VERSION macro in simgrid_config.h.
566 - We are trying hard to keep the API stable, but it may happen that
567 some things change (we're a research project after all, not a
568 nuclear plant operating system). If such things should happen, you
569 could rely on that macro to adapt.
570 - current value: 30600 for 3.06.00, aka 3.6
571 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
572 a number that can be compared with SIMGRID_VERSION.
573 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
574 assertions and verbose/debug logging events are disabled at compile time.
576 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
578 SimGrid (3.5) stable; urgency=medium
581 * New feature to any SimGrid-based simulator: Model-Checking
582 Check SIN#1 for more details.
585 * New Model SMPI (three-interval linear regression for correction factors)
586 See RR-7426, available at http://hal.inria.fr/inria-00527150
587 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
588 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
589 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
590 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
591 * See also src/smpi/README
596 - Tracing API changes: TRACE_start and TRACE_end should not be called
597 by user-code. They are automatically called by simulators created
598 with SimDAG, MSG and SMPI if the toolkit is compiled with
599 tracing_enabled=ON. Categories declaration and utilization remain the
600 same for MSG and SimDag.
601 - A function was added to the tracing API to declare categories with
603 - TRACE_category_with_color (char *category, char *color)
604 where color must be in the following format
605 "%f %f %f", red, green, blue
606 and red, green, blue are float values in the interval [0, 1]
607 - User can specify NULL as color parameter, or continue calling
609 On that case, the tracing system will define random colors
610 - The following command-line options are supported:
611 --cfg=tracing/filename:msg.trace
612 --cfg=tracing:1 (activate tracing, needed to use others)
613 --cfg=tracing/platform:1 (categorized resource use)
614 --cfg=tracing/uncategorized:1 (uncategorized resource use)
615 --cfg=tracing/msg/task:1 (task creation)
616 --cfg=tracing/msg/process:1 (process creation, migration)
617 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
618 --cfg=tracing/smpi:1 (SMPI interface tracing)
619 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
620 - examples of examples/msg/tracing updated
622 - DAXLoader and DOTLoader functions can generate tasks with categories
623 - A new function to attribute a category to SD tasks:
624 TRACE_sd_set_task_category (SD_task_t task, char *category)
625 * Tracing the MPI interface implemented by SMPI
626 - Collective operations are traced with states
627 - Point-to-Point operations are traced with states/links
628 - Tracing activated by a parameter "-trace filename" passed
629 to smpirun during execution (considering that simgrid
630 is compiled with tracing enabled)
631 - To run the simulation with gdb, the simulator
632 accepts --cfg=tracing/smpi:1 to trace SMPI
633 - tesh files to check if smpi tracing is ok
634 - See examples/smpi/NAS/DT-trace
635 * GTNetS tracing re-worked
636 - adaptation to the tracing system of GTNets to cope
637 with modifications regarding the fullduplex mode
638 - new tesh files to check if gtnets tracing is ok
641 * Asynchronous communications through the functions:
642 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
643 * New function: MSG_load_platform_script()
644 to make possible using a lua script instead of XML files to set up platforms
645 * New function: MSG_set_function
646 to associate functions to processes, used when bypassing the parser
647 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
649 Platforms: Add some more examples in examples/platforms
650 * Grid'5000: see www.grid5000.fr
651 * *_30000_hosts.xml: various huge files [mainly scalability testing]
654 * Change the XML format. This is a very important modification. SimGrid
655 3.5 introduces a new hierarchical format based on the notion of
656 Autonomous Systems. Compatibility with old format is ensured
657 through the perl script provided in the install bin directory
658 bin/simgrid_update_xml.
659 It is now possible to build platforms with specific routing
660 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
661 connect several platforms together. We will try to provide soon
662 set of realistic platforms exploiting these properties (have a
663 look at examples/platforms/ for the moment).
664 * Take the opportunity of the XML format change to be a good XML citizen:
665 rename link:ctn to link_ctn and similar changes (also dealt with by
667 * Add a new routing scheme (rule-based) using regular expressions. It
668 enables to have an extremely low memory footprint when the
669 underlying routing is simple and can be compactly described. You
670 need to have libpcre4-dev (perl regular expressions) installed if
671 you want to use this routing scheme.
672 * Revive the cluster TAG and allow to easily and efficiently (both in
673 term of memory and speed) connect clusters together. Have a look
674 at teshsuite/simdag/platforms/ to see how this can be done. With
675 this tag, you can create clusters with thousands of tasks at no
676 cost (have a look at examples/platforms/).
677 Note: clusters are implemented as ASes, so there is no need for an
678 enclosing AS tag if you have only one cluster in your platform.
679 * Add new generic functions in the public interface that allows the user
680 to call SURF 'create_resource' methods from your code (same
681 functionality as the XML bypass mechanism but with a much lighter
683 * Add a new model (enabled through command line --cfg=network/model:SMPI)
684 that uses a piecewise linear approximation to produce better
685 results when exchanging small messages.
686 * Add a new parameter to handle correctly full duplex link and account
687 for interferences between uplink and downlink communications
688 (activate with --cfg=fullduplex:1).
691 * Rename the SD_READY (all dependencies are satisfied and task is
692 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
693 dependencies are satisfied) state.
694 This prevents a confusion between the notion of "ready to schedule"
695 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
696 simulated" (SD_RUNNABLE) used by the simulation kernel.
697 * Change the way a task is considered as ready. Instead of removing
698 dependencies when a task is done, a counter is decreased. This way,
699 it is always possible to reach ancestors thanks to the
700 SD_taks_get_parents function (even after the end of the simulation.)
701 * Change the return type of SD_Simulate from (SD_task_t*) into
702 xbt_dynar_t. This function was in handling a dynar internally and
703 converted it into a NULL terminated array for historical reasons.
704 * New function SD_dotload(char*) to load a DAG described in dot
705 format. This loader and the corresponding examples require the
706 installation of the graphviz library.
707 * Fix a bug in the management of tasks of size 0 in the surf network
708 models. This problem was only visible with SIMDAG and you should
709 thus disregard results produced with earlier versions if you
710 relied on this feature (some tasks were blocked because of this).
711 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
712 even though your applications were doing only point-to-point
713 communications and sequential computations. Now you can really use any
714 model you want (of course, if you create real parallel tasks, which are
715 not implemented in most models beside ptaskL07, this will abort).
716 * Add an example that schedules a DAX on an heterogeneous platform
717 using a Min-Min strategy.
718 * New function SD_workstation_get_current_task() that returns the kind
719 of task currently running on a workstation in the sequential access
721 * Raise some warnings when unexecuted tasks remains at the end of the
722 simulation. This is usually caused by cycles in the DAG.
725 * New function: SIMIX_process_set_function() called by MSG_set_function
726 * Change the underlying waiting queue in semaphores so that a process
727 can wait on several of them simultaneously (as in waitany).
728 * Fix the way to handle tokens in semaphores so that all access patterns
729 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
730 * kill the dirty pimple SIMIX_message_sizes_output()
731 Please use (proper) visualization instead
734 * New data container: setset (set of sets of elements)
735 * New module: mmalloc (mapped malloc, allowing to have several
736 independent segments of malloc)
737 * New function: xbt_dict_cursor_set_data()
738 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
739 * New function: xbt_dynar_is_empty()
740 * New function: xbt_fifo_get_last_item()
741 * Fix xbt_dynar_shrink(): use the right element size.
742 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
743 uninitialized areas during expand.
744 * Fix semaphores: previous implementation was severely broken.
745 * Use library init/fini functions for our initialization.
746 - you can use logs and other feature as soon as you want in your
747 code (even before the xbt_init / MSG_init)
748 - xbt_exit is now a no-op and produce a warning when used.
751 * Port GRAS to new SIMIX mechanisms. This allows gras users to
752 benefit from the latest improvement to the simulation kernel.
753 * Kill measurement sockets for now. If you rely on them, sorry. This
754 release is not for you. This feature will be reintroduced in the
755 future, but we cannot delay the release any further.
756 * New function: gras_msgtype_get_name().
757 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
758 * Fix (at last) the pmm example: it should not randomly fail anymore.
760 Build chain: bug fixes and overall polishing
761 * Cmake is now stable enough. Hence, we killed the autotools.
762 * Port to windows ( TM :)
763 * Fix the 'make install' target.
764 No need to use 'make install-simgrid' anymore
765 * Introduce a 'make dist' target compiling a *source* archive
766 'make package' compiles a binary archive
767 * Compile java files only on need
768 * Add --cd and --setenv command line options to tesh
769 * Out of source builds are not fully supported yet, but we are close
770 * Enable supernovae and optimization flags by default for our users
773 * Add layer to set up environment directly from lua, without XML.
774 * The effect of gras_stub_generator can be achieved through
775 lua too (check examples/gras/console/ping_generator.lua)
777 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
779 SimGrid (3.4.1) stable; urgency=low
781 The "Polishing easter eggs is probably a good idea" release.
782 This is a bug fixes release only.
786 * Fix a bug preventing the tasks from begin garbage collected.
789 * Fix a bug occuring when a host involved in a communication fails.
790 This was not detected properly by the other peer involved in the
791 communication. Now, it's reported as a network error.
794 * Warn the user about loop dependencies in data flow of DAX files
795 * Obey the control-flow dependencies of DAX files
798 * Add option "enable_smpi" allowing to not compile SMPI.
799 Probably useful for the (Mac) users experiencing a build error here
800 * Improve the detection of lua5.1 and ruby1.8
802 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
804 SimGrid (3.4) stable; urgency=low
806 The "Easter in Cargese" release. Also known as (major changes):
808 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
809 ~> bindings were greatly improved
810 ~> new tracing infrastructure for better visualization introduced
812 * the "Welcome to configury modernity" release.
813 ~> we switched from autotools to cmake, and improved our cdash
816 A more detailled list of changes follow (full detail in svn log).
818 Java Bindings: Various Cleanups
819 * (install java-gcj-compat-dev on debian-like to use them)
820 * Remove put/get: no need to export deprecated interface in Java
821 Use send/receive instead.
822 * Cleanup the examples and add a README per directory
823 * Remove example autoDestination (that's the only way to go now)
824 * Remove example explicitDestination (was a plain copy of basic)
825 * Make JniException a runtime exception, so that there is no need to
826 declare the fact that you may encounter such a beast. I guess that
827 nobody will ever want to survive such error.
828 * Create specific errors for each MSG case of failure:
829 host failure, transfer failure, timeout, task cancelled
830 * Cleanup the exceptions that may get thrown by each function
831 * Other internal cleanups in Java bindings. Performance still bad :/
832 Ruby and Lua Bindings: create them
833 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
834 * That's new and great, you should try them out.
835 Same functionalities than Java bindings, only even less polished
837 * Kill the useless "rate" argument of SD_task_get_execution_time()
838 Everyone used to provide -1 as a value, it was not used, and the
839 semantic of a possible use wasn't even clear.
840 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
841 either as comm costs or compute costs to mean that there is no
842 such thing for that specific task.
843 * Add a SD_task_set_name() function
844 * Fix SD_task_unschedule() on typed tasks
845 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
846 * In DAX loader, accept useless 'level' attributes to <job> since
847 LIGO DAGs have them (seem to be to ease graphical representation).
849 * Add an example masterslave_mailbox.c using send/receive and not
850 the deprecated put/get interface.
851 * Kill the MSG_paje_output() function. It's a noop since 2 years.
852 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
854 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
855 (declare MSG_USE_DEPRECATED to still have the old name)
856 * Add a MSG_task_set_data() function
857 * About trace replay (see examples/msg/actions):
859 - Allow to work with splitted trace files for each process
860 Give the specific trace file as argument of each process,
861 and call MSG_action_trace_run(NULL)
862 You can still have one merged file for all processes.
863 - Fix implementation of collective operations
864 * Allow task_execute() on 0-sized tasks (closes #10063)
866 * This is the first release of SimGrid where SMPI is not considered
867 beta anymore (even if some corners should still be improved)
868 * Port over the new SIMIX_network submodule (internal refactoring)
869 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
870 * Implement more missing elements of the standard:
872 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
874 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
875 MPI_Scan() MPI_Get_processor_name()
876 - Added implementation of missing case for Alltoall (warning: it's
877 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
878 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
879 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
880 SMPI_MPI_Allgatherv()
882 - MPI_Waitsome() was broken
883 - Allow relative includes in smpicc
884 - Command line cfg argument 'reference_speed' was ignored...
885 - Some functions did not properly lead to auto-benching of user code
886 - smpicc passes -O2 by default (just like openmpi one)
888 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
889 * Bug fixes about timeouts during communications
890 * add SIMIX_message_sizes_output() as a pimple to write to file the
891 amount of messages per size. Use gnuplot to get histogram.
892 Pimple because that's the only user-visible function of simix,
893 defined directly in xbt.h (irk, sorry)
895 - Add a SIMIX_sem_get_capacity() function
896 - Fix interactions with processe resume/suspende
897 - release_forever() was stupidly broken
898 - Fix SIMIX_display_process_status() for processes in a semaphore
899 - Make SIMIX_sem_block_onto() user-visible
900 * Refactoring context stuff:
901 - Use pseudo-OOP for better modularity
902 - reimplement SIMIX_process_kill() without process_schedule() so
903 that the latter can take as invariant that it is called from
905 - Merge context_start into context_new for sake of simplicity
907 * Add a Vivaldi network model, coded live during SUD'10 ;)
908 * Rename configuration variables to start a hierarchy:
909 o cpu_model -> cpu/model
910 o network_model -> network/model
911 o workstation_model -> workstation/model
912 * New configuration variables:
913 o network/bandwidth_factor: correction to bandwith
914 o network/latency_factor: correction to latency
915 o netwotk/weight_S: correction to the weight of competing streams
916 * Add a long description to the models, that users can see with such
917 argument on the command line: --cfg=cpu/model:help
918 * --help-models display the long description of all known models
920 * config: add the ability to set a default value after registration
921 Does not override any previously set value (e.g. from cmd line)
922 * dict: allow to have integer key and data.
923 When so, you need to use the following functions
924 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
925 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
926 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
927 In contrary to regular dicts, the key is not malloced before copy.
928 Mixing scalar and regular elements in the same dict is not tested
930 * Allow to use xbt_dynar_shrink() to expend the dynar instead
931 Tracing for Visualization:
932 * SimGrid is now instrumented in order to generate a trace file for
933 visualization analysis: to use it, need to compile SimGrid with the
934 "tracing" option enabled, and instrument the program using SimGrid with
935 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
936 (among other functions).
937 * The instrumentation only traces the platform utilization for now
938 * Documentation to use the tracing functions and how to analyze the
939 traces with the Triva tool is written.
940 * More information about: SimGrid FAQ (in the section Tracing Simulations
943 * We moved to cmake as default build system. Autotools support will
944 be dropped soon. Check the FAQ for more info about how to use it.
945 * Greatly improved our cdash/ctest interactions
946 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
947 * Added memory checking tests with valgrind; lot of memleak fixing.
948 This may be the first release of simgrid with so few memory issues
949 * Added code coverage tests.
950 Our coverage is still improvable, but at least we see it on cdash.
952 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
954 SimGrid (3.3.4) stable; urgency=low
956 The "Desktop Grid needs love too" release (also called Xmas release).
959 * Major speedup in the maxmin system solving by using lazy evaluation
960 Instead of solving completely the maxmin system at each iteration,
961 only invalidate (and recompute) the modified parts.
962 This new feature is enabled in default models but you can try to
963 turn it on with "--cfg:maxmin-selective-update=1" for other models.
964 * Cas01 IMproved as default CPU model
965 This CPU model is the same Cas01 model, but it uses the
966 maxmin-selective-update flag and a heap structure to manage
967 actions on SURF kernel.
968 It reduces the complexity to find the next action to finish and,
969 consequently, it's faster than the old Cas01.
970 This is the new default CPU model (Cas01).
971 * Rename the old Cas01 model to Cas01_fullupdate
972 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
973 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
974 * CpuTI (CPU Trace Integration)
975 A new CPU model whose objective is simulate faster when using
976 availability trace files.
977 Instead of using a full featured, over engineered maxmin system for
978 CPU modeling, this model does the pre-integration of traces files
979 to calculate the amount of CPU power available, and so, executes
980 faster than the old CPU models.
981 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
982 * Use LV08 as default network model since it gives better accuracy
983 for small messages and shouldn't change things for big ones.
984 Use --cfg=network_model:CM02 to get the previous behavior.
987 ******************************************
988 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
989 ******************************************
990 * The new CPU model may changes simulations!
991 The point is that events occurring at the exact same timestamp
992 are not scheduled in the same order with the old and new
993 version. This may be enough to completely change the execution
994 of simulations in some cases.
995 * The new network model will change simulations!
996 This new model is more realistic than the previous one, so you
997 should consider redoing your old experiments with this model.
998 Sorry for the inconvenience.
1001 * Introduce the supernovae compilation mode
1002 When compiled that way, the whole SimGrid (or almost) is put in a
1003 single compilation unit and compiled in one shoot.
1004 This is to help gcc which has difficulties to inline stuff from one
1006 The speedup seem to be above 15%, althrough more tests are needed on
1007 amd64 to confirm that gain.
1010 * Port of MSG's mailbox on top of SIMIX network
1011 The put/get mechanism was greatly simplified on the way.
1014 * New SIMIX network module. Provides:
1015 - Mailbox: rendez-vous mecanism to find with who you want to speak
1016 - Synchronous send/recv: easier and hopefully faster since the
1017 logic is handled in the maestro process directly now
1018 - Asynchronous send/recv: you dreamt of it? It's here now
1019 Too bad that nobody cared enough to propagate the change to MSG.
1020 * Add semaphores as SIMIX synchronization mechanism.
1023 * new function SD_daxload(char*) to load a DAX file
1024 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
1025 * Introduce typed tasks. Specify its kind and cost at creation.
1026 At scheduling, just give where it should be placed, and the cost
1027 for each involved resource is automatically computed.
1028 Existing constructors so far (more to come of course):
1029 - SD_task_create_comm_e2e() for end-to-end communication
1030 - SD_task_create_comp_seq() for sequential computation
1031 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
1032 * new function SD_task_dump() for debuging display
1033 * new function SD_task_dotty(task,FILE*) writing to file the info
1034 about the task in dotty format
1035 * SD_task_dependency_exists() can now cope with having one of its
1036 arguments NULL. If so, it tests whether the other argument has any
1038 * Add getters on list of preceding/following tasks:
1039 SD_task_get_parents(task) and SD_task_get_children(task)
1040 * Add getters on amount of workstations and list:
1041 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
1042 * Add getter on task kind: SD_task_get_kind(task)
1043 * Update the start_time and finish_time of tasks on completion/failure
1044 * Bugfix: Remove task from state swags when destroyed
1047 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
1050 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
1051 dynar with one separate thread per value of the dynar.
1052 * Change the prototype of xbt_thread_create(), sorry.
1053 Added a boolean parameter indicating whether we want to join this
1054 thread (used in SG only for now)
1055 * Implement xbt_thread_join and xbt_thread_yield in SG also.
1058 * GTNetS wrappers should now be usable again (and betterly tested too)
1059 * Fix a major regression from 3.2 where the timeout provided to
1060 MSG_task_put_with_timeout() was used as absolute time before which
1061 the comm should be done.
1062 * Start to fix the <cluster> tag.
1063 - Internal links should be good now (beside of the loopback, which
1064 use the private link instead)
1065 - paths to the external world is still rather broken
1066 - the <route:multi> tag is just broken. Actually that's brain-dead.
1067 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
1068 to make it less stupid
1069 ** Check your platform with teshsuite/simdag/platforms/flatifier **
1070 * Fix a source-level compatibility glitch from 3.2: after defining
1071 MSG_USE_DEPRECATED, you can use the old name
1072 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
1073 * Allow to compile from the SVN with automake 1.11
1074 * Fix some problems when using the "start_time" tag in deployment XMLs.
1075 * Fix #8569: XBT/synchro.h has redundant declarations
1076 * Fix #8563: MSG return values and exceptions
1077 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
1078 * Integrate patch #8636: Obey DESTDIR when installing documentation.
1079 Thanks to Robson Peixoto.
1080 * Fix a vicious bug in dictionaries inducing that some elements were
1081 not freed on xbt_dict_free()
1083 Portability report of this version:
1084 * Main portability targets:
1085 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
1086 on (amd64/i386/ia64)
1087 - mac leopard on i386
1088 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
1089 but nothing critical.
1090 * Other platforms: windows, AIX and others were not tested for this release
1092 Timing report of this version:
1093 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
1094 scenario parameters). From 8h to a few seconds in desktop grid settings.
1095 * Supernovae brings about 25% speedup on i386.
1097 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
1099 SimGrid (3.3.3) stable; urgency=low
1101 The "Need for Speed" release.
1103 The timings done to validate the 3.3.2 were faulty.
1104 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
1106 The problem was a conversion from a manually handled vector to
1107 xbt_dynar_t on the critical path.
1108 xbt_dynar_foreach calls functions, inducing stack management crap.
1110 We inlined these functions and xbt_dynar_foreach is now breath taking.
1111 We also inlined xbt_swag_belong on the way.
1113 Here are some approximate speedup measurements (on master/slaves
1114 simulations lasting between 10s and 20s each):
1115 3.3.1 -> 3.3.2: about same performance
1116 3.3.2 -> 3.3.3: 40% speedup
1117 3.3.1 -> 3.3.3: 40% speedup
1118 3.3.1 with inline patch -> 3.3.3: 30% speedup
1120 Our reading is that the refactoring which occurred in 3.3.2 made us
1121 suffer much more from the xbt_dynar_foreach low performance, but
1122 once we solved this, this refactoring proved to be very performance
1123 effective. From the 40% speedup, somehow, 10% are due to the
1124 inlining and 30% to the refactoring.
1126 That's a pitty that gcc cannot inline functions placed in other files
1127 alone. We have to choose between:
1128 - break the encapsulation (by putting private data structures and
1129 accessors in headers files to help gcc)
1130 - live with low performance
1131 - switch to a decent compiler such as icc (not quite possible).
1133 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
1135 SimGrid (3.3.2) stable; urgency=low
1137 The "Simplicity does not preceed complexity, but follows it" release.
1139 The main contributors of this release were (lexical order):
1140 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
1143 * Extract the routing logic into its own object.
1144 (was dupplicated in network.c and workstation_LV07.c;
1145 Allows to implement other ways of storing that info)
1146 => kill now useless network_card concept
1147 - Use dynar to represent routes (instead of void** + int*)
1148 - kill link_set (use surf_network_model->resource_set instead)
1149 - Add a command-line option to choose the routing schema to use
1150 - Add three new models:
1151 * Floyd (shortest path computed at initialization)
1152 * Dijikstra (shortest path recomputed all the time)
1153 * Cached Dijikstra (shortest path computed on need)
1154 All these models where contributed by Silas De Munck, and are
1155 described in his ICCS09 paper.
1157 * Simplify model declaration
1158 (less redirections, less function to write when defining a model)
1159 - Factorize stuff between models:
1162 surf_model_resource_set(model)
1163 surf_model_resource_by_name(model, name)
1164 - Unify the types of models in s_surf_model_t (using an union)
1165 - Embeed fields of common_public directly into s_surf_model_t
1166 - Rename model methods:
1167 action_free ~> action_unref
1168 action_change_state ~> action_state_set
1169 action_get_state ~> action_state_get
1170 - Change model methods into functions :
1171 (model)->common_public->action_use ~> surf_action_ref
1173 * Implement a generic resource; use it as ancestor to specific ones
1174 (allows to kill duplicated code in models)
1175 Drawback: timer command don't need no name nor properties;
1176 workstation_CLM03 don't need no properties
1177 (but I guess we can live with those few bytes wasted)
1179 * Improve the action object model
1180 - implement a constructor avoiding dupplicated code about field
1181 initialization in generic_action part.
1183 * Kill the SDP model: it has an external dependency, is deprecated
1184 in flavor of modern lmm models, and didn't compile since a while
1187 * Relocation of the context module from XBT to SIMIX.
1188 (the context were decoupled from the simix processes, duplicating a lot of code)
1189 => a lot of code was factorized
1190 - less overhead is introduced during scheduling
1191 - simpler API for the context factory
1192 - the logic for process creation,destruction and manipulation was simplified
1193 * Simplification of the s_smx_process_t data structure.
1194 => accesing the simix level data associated to a process is faster now,
1195 and the code is a lot more readable.
1198 * Implement some more MPI primitives:
1199 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
1200 -implementation: Bcast: flat or 2-ary tree (default),
1201 Barrier: 4-ary tree,
1203 Allreduce: Reduce then Bcast
1204 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
1205 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
1206 Alltoallv: flat tree, like ompi
1208 * Add support for optimized collectives (Bcast is now binomial by default)
1209 * Port smpirun and smpicc to OS X
1212 * Kill SD_link_get_properties: hard to maintain and makes very little sense
1213 Shout out if you used it.
1216 * Display the list of still queued messages in SG mode when existing
1220 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
1221 * Add xbt_graph_node_get_outedges() [Silas De Munck]
1222 * Add xbt_str_from_file(FILE*)
1223 * Add xbt_dict_get_key achieving a linear reverse search
1224 * Remove the context module
1226 Portability report of this version:
1227 * Main portability targets:
1228 - Linux(debian)/x86/context
1229 - Linux(debian)/x86/pthreads
1230 - Linux(debian)/amd64/context
1231 - Linux(debian)/amd64/pthreads
1232 On these, we still have the eratic breakages of gras/pmm and
1233 amok/saturate_sg reported in previous version. We still think
1234 that the tests are the cause of the fault, not the tested code.
1236 - Mac OSX Leopard/x86/context
1237 Still false negative in tesh autotesting.
1238 Smpi still fails, but this time because readlink does not accept -f
1239 Everything seems to work properly beside of that.
1242 - AIX version 5.3 (only tested contexts this time)
1243 Smpi still fails there because mktemp is not installed.
1244 Everything seems to work properly beside of that.
1246 I managed to compile it for the first time, but several breakages.
1247 Won't delay the release for this exotic platform.
1249 * Windows: it's still lagging behind. If you want to help, please
1252 Timing report of this version:
1253 This version seem to be more than 5% faster than 3.3.1 (on linux
1254 64bits with contextes). The gain is less than expected, we are
1255 investigating this for next release.
1257 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
1259 SimGrid (3.3.1) stable; urgency=low
1262 * Implement a --cfg-help to show existing configuration variables
1263 * Build chain do not require doxygen in maintainer mode
1266 * fix a bug on struct sizeof computation, which prevented the
1267 exchange of arrays of structs in some conditions
1268 - added a regression test about this in datadesc_usage
1269 * Allow the exchange of 0-long dynamic vectors.
1270 - for that, use -1 as indicator of dynamic size instead of 0
1271 - This implied to change any size from unsigned long to long,
1272 reducing a bit communication abilities, but I guess that with
1273 64bits being quite common, this is more than enough.
1274 - This also induce a protocol change, thus bumping network protocol
1275 version from 0 to 1 (if we have external users, we have to get
1276 clean on that point too ;)
1277 - added two regression tests about this in datadesc_usage
1278 * Be more verbose when propagating local exceptions
1279 This helps debugging.
1280 * Display the status of simulated processes when receiving SIGINT in
1284 * Allow to control the simulation from a trace file.
1285 New functions MSG_action_register() and MSG_action_trace_run()
1286 The first one allows to associate a function execution to each
1287 kind of action while the second one parses a trace file and
1288 triggers the corresponding actions within the system.
1289 For now, only a toy example is provided in examples/msg/actions
1290 * Add an exemple of process migration in examples/msg/migration
1291 * Fix a bug in task exchange which broke MSG_task_get_sender()
1292 Add a teshsuite regression test for that.
1293 [Bug: if MSG_task_get_sender() is called after sender exit,
1295 * Fix a bug which prevented suspend/resume to work properly
1296 * Display the status of simulated processes when receiving SIGINT
1297 This fixes a regression of v3.3. due to the introduction of SIMIX
1298 * Bug fixing in failure management:
1299 - trace could not start by a failure at time 0
1300 - failure during communications were not working
1303 * Add SIMIX_process_set_name() to change the name of the current
1304 process in the log messages.
1305 * Store smx_hosts in a dict since we only retrieve them by name
1306 * Move the configuration infrastructure to surf
1309 * Move the configuration infrastructure to surf
1312 * Massive internal cleanups:
1313 - Store internal structures on processes instead of hosts (allows
1314 to have more than one process per host, in addition of being more
1316 - Cleanup the initialization/finalization process
1317 - Kill a whole bunch of unneeded synchronization:
1318 processes run in exclusive manner within the simulator
1319 - Move queues from global tables to process data fields
1321 - now accept -platform and -hostfile arguments
1322 - Pass the right rank value to processes according to the hostfile
1323 * Compile the examples by default, and use them as regression tests
1324 * Implement MPI_Wtime()
1325 * Change the reference speed to a command line option
1328 * TCP_gamma can now be specified as command line option using
1329 --cfg=TCP_gamma:10000000.0
1330 * Change the --surf-path cmd line option into --cfg=path:
1333 * Also include strbuff from xbt.h public header
1334 * xbt_ex_display(): do not free the exception after displaying
1335 This allows to do more with the given exception afterward.
1336 Users should call xbt_ex_free() themselves.
1340 Portability report of this version:
1341 * Main portability targets:
1342 - Linux(debian)/x86/context
1343 - Linux(debian)/x86/pthreads
1344 - Linux(debian)/amd64/context
1345 - Linux(debian)/amd64/pthreads
1346 These targets fail about 1/10 of times on gras/pmm, but we believe
1347 that this is because of the test, not because of simgrid.
1348 amok/saturate_sg fails even more rarely, and the test may not be
1351 - Mac OSX Leopard/x86/context
1352 The test suite still spits tons of errors because some obscure
1353 force prevents us from removing the temporary directories
1354 arguing that they still contain some metadata I've never heard of.
1355 Smpi fails because seq is not installed.
1356 Everything seems to work properly beside of that.
1359 - AIX version 5.3 (both contexts and pthread)
1360 Smpi still fails there because mktemp is not installed.
1361 XML inclusions seems rosty on AIX.
1363 * Windows: it's still lagging behind. If you want to help, please
1366 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
1368 SimGrid (3.3) stable; urgency=high
1372 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
1373 [Malek Cherier & Mt]
1375 * Introduce the SIMIX module: factorize code between MSG and GRAS.
1378 Until now, GRAS were using MSG as an interface to SURF. It was
1379 quite difficult because both interface have several differences
1380 (MSG channels vs GRAS sockets were the most notable point).
1382 This also opens the gate to SMPI (which should occur soon) and speed
1383 up simulations by to 40% (even if it were not the main goal).
1385 **************************************
1386 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
1387 **************************************
1388 The point is that events occuring at the exact same timestamp are
1389 not scheduled in the same order with the old and new version. This
1390 may be enough to completely change the execution of simulations in
1391 some cases. Sorry for the inconvenience.
1393 * Cleanup and upgrade the XML format to push further scalability
1394 issues (check http://hal.inria.fr/inria-00256883/ for more info)
1396 * Improve the testing infrastructure with tesh. Now a very large part of
1397 the code is tested not only by being run but also by checking that the
1398 output match an expected output [Mt].
1400 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
1401 is really less memory-demanding, which should allow you to use
1402 larger files in SimGrid [AL].
1404 * Inform valgrind about our contextes, so that it becomes usable
1405 with the default (and more effecient) version of SimGrid
1406 [contributed by Sékou Diakite, many thanks]
1409 * Introduce a listener thread in charge of receiving incoming
1410 messages from the network. It allows to overlap communication and
1411 computation but most notably, it removes some stupid deadlocks due
1412 to the fact that so far, a process could not send and receive at
1413 the same time. This made most non trivial communication schema
1415 * Convert the PIDs from long int to int to match the MSG ones (and
1416 linux ones too) [Mt]
1417 * New function: gras_agent_spawn() to launch a new process on
1418 current host. Only working in simulation for now. [Mt]
1419 * New function: gras_os_hostport() returning a constant form (ie,
1420 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
1423 * Make the backtrace of exceptions more human readable [Mt]
1424 * New module: xbt/str [Mt]
1425 a ton of string utility functions (split, join, printf to a newly
1426 allocated buffer, trim, etc)
1427 * New module: xbt/hash [Mt]
1428 SHA1 hashing algorithm (more to come if needed)
1429 * New module: xbt/synchro [Mt]
1430 synchronization tools (mutex and conditions) working the same way
1431 in simulation and in real life (mainly useful for GRAS, but not
1433 * New module: xbt/queue [Mt]
1434 classical producer/consumer synchronization scheme
1435 * xbt_dynar_new_sync() creates a synchronized dynar. All access
1436 (using the classical functions will get serialized) [Mt]
1437 * Make dictionary internal table dynamic. No need to specify its size
1438 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
1440 * Make sure the log channels are organized as a tree under windows
1441 (because of ANSI C compatibility issue, any channel were child of
1442 root directly) [Mt].
1445 * Cleaned many thing in surf and fixed a few bugs [AL].
1446 * Add a nice command line configuration mechanism to compose models [AL].
1447 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
1448 the previous one (KCCFLN05). It relies on something that looks like
1449 a max-min sharing mechanism but cannot be written as such. A new solver
1450 was thus designed [AL].
1451 * Add a new solver to lmm. Based on Lagrange optimization and
1452 gradient-based descent, it enables to efficiently maximise systems s.a
1454 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
1456 This solver enables to propose two new network models for TCP Reno and
1457 TCP Vegas based on Low's work. These models still need to be fully
1458 tested though [Pedro Velho].
1461 * Bug fix in SD_simulate. Now the time bound given as argument is
1463 * Use the new parallel task model (ptask_L07) as default.
1464 * Use the SURF command line configuration mechanism.
1465 * 0-size tasks (for synchronization) should now work.
1467 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
1469 SimGrid (3.2) stable; urgency=high
1473 We still experience issues on this platform, but we believe that at
1474 least MSG is usable.
1476 GRAS API BREAKAGE (for simplification purpose, sorry):
1477 * the gras_msgtype_by_name is not used anymore. Instead of
1478 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
1479 you can write (and must)
1480 gras_msg_send(toserver, "request", &request);
1481 - If you still want to pass a gras_msgtype_t to the function (to cache
1482 the type and avoid the lookup time), use the gras_msg_send_() variant.
1483 - Impacted functions:
1484 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
1485 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
1486 * The callbacks are now expected to return 0 when everything went well
1487 (just like the main() function)
1489 GRAS new features and improvements:
1490 * New module mecanism where user code can use per process globals [Mt]
1491 This is similar to gras_userdata_*() functions, but for libraries. It
1492 factorize some code developped over and over in the examples and AMOK.
1493 It has still to be documented and used (only amok/peermanagement is
1495 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
1496 loss when they were small enough to fit into the buffer and sent quickly
1497 enough so that they can all get received in one shoot.
1498 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
1499 if not found. Use the *_or_null() variant for the old semantic.
1500 * In gras_msg_handle, do not discard messages without callback.
1501 They are probably messages to be explicitly awaited later (ie, proofs of
1502 mis-synchronization in userland since they are sent before being awaited)
1503 No big deal usually.
1504 * gras_socket_meas_send/recv: semantic changed!
1505 The numerical arguments used to be (1) the total amount of data to send
1506 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
1507 messages. This was need for the fool willing to send more than MAXINT
1508 bytes on quite fat pipes.
1511 * Do really rename the hostmanagement module to peermanagement. [Mt]
1512 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
1513 but this is rather new and this was documented in the module
1514 documentation (poor excuses, I admit)
1515 * Bandwidth measurement semantic changed! This follows the changes to
1516 gras_socket_meas_send/recv explained above.
1519 * A sequential mode has been added to the workstations. When a workstation
1520 is in sequential mode, it can execute only one task, and the other tasks
1521 are waiting in a FIFO. [Christophe Thiery]
1524 * The KCCFLN05 workstation model now handles parallel tasks. It is the
1525 model for SIMDAG. [Christophe Thiery]
1526 * Bug fix in the maxmin solver: Some values were close to 0 instead of
1527 equal to 0, which caused some bad behaviors in
1528 saturated_constraint_set_update. I now use a threshold mechanism like in
1532 * When running manually src/testall, you select specific units [Mt]
1533 testall is the result of our cunit mecanism, and should replace all
1534 the scripty thingy around since bash don't run easily on billware.
1536 * A mallocator system has been added. [Christophe Thiery]
1537 Mallocators allow you to recycle your unused objects instead of freeing them
1538 and allocating new ones.
1540 Documentation update:
1541 * FAQ reworking + New FAQs:
1542 - "Valgrind spits tons of errors!" [Mt]
1543 - "How to repport bugs" [Mt]
1544 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
1545 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
1546 - Communication time measurement within MSG [AL]
1547 - I experience weird communication times when I change the latency [AL]
1548 * GRAS tutorial [Mt]
1550 - an introduction to the framework and to the used communication model
1551 - an initiatic tour introducing the most proheminent features:
1553 . Lesson 0: Installing GRAS
1554 . Lesson 1: Setting up your own project
1555 o Part 2: Message passing
1556 . Lesson 2: Exchanging simple messages
1557 . Lesson 3: Passing arguments to the processes (in SG)
1558 . Lesson 4: Attaching callbacks to messages
1559 . Lesson 5: Using globals in processes
1560 . Lesson 6: Logging informations properly
1561 . Lesson 7: Using internal timers
1562 . Lesson 8: Handling errors through exceptions
1563 . Lesson 9: Exchanging simple data
1564 . Lesson 10: Remote Procedure Calling (RPC)
1565 . Lesson 11: Explicitely waiting for messages
1566 . Recapping of message passing features in GRAS
1567 - A HOWTO section containing:
1568 o HOWTO design a GRAS application
1569 More are due, of course. They will come latter. In the meanwhile, you can
1570 check the examples which are still here.
1572 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
1574 SimGrid (3.1) stable; urgency=high
1578 There was a stack corruption somewhere, visible only when optimizing
1579 with these versions. [Vince]
1582 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
1583 module that enabled to play with Directed Acyclic Graphs. It is built
1584 directly on top of SURF and provides an API rather close to the old
1585 SG. Some old codes using SG are currently under rewrite to check that
1586 all needful functions are provided. [Christophe Thiery]
1589 * Complete rewrite of the KCCFLN05 workstation model. It is now an
1590 extension of the classical CLM03 model that gracefully handles
1591 failures. This is now the default model for MSG and GRAS. It doesn't
1592 handle parallel tasks yet though. [AL]
1593 * Bug fix: Weights were not correctly set in the network part.
1594 WARNING: This may have resulted in incorrect results with simulations
1595 where there are more than one flow on a given link. [AL]
1598 * After a (long ?) discussion on simgrid-devel, we have decided that the
1599 convention we had on units was stupid. That is why it has been decided
1600 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
1601 WARNING : This means that all previous platform files will not work as
1602 such with this version! A warning is issued to ask users to update
1604 A conversion script can be found in the contrib module of the CVS, under
1605 the name contrib/platform_generation/surfxml_update.pl [MQ]
1608 * Bug fix: Processes were started in reverse order, wrt deployment file.
1609 WARNING: if your code relies on this bug, please fix it. [AL]
1610 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
1611 being executed on two different locations. [AL]
1612 * Bug fix: Failures are now better supported thanks to Derrick's tests
1613 (there was many failure situations I hadn't thought of and that weren't
1614 correctly handled). [AL]
1615 * New function: MSG_host_is_avail indicates you whether a given m_host_t
1619 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
1620 Exception occurring on server-side are propagated back to client (!).
1622 API CHANGE: the callback changed their prototype. Change:
1623 int my_handler(gras_socket_t expeditor, void *payload_data) {
1625 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
1626 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
1628 * New! function: gras_msg_handleall to deal with all messages arriving
1629 within a given period.
1630 * New! function: gras_socket_server_range to get a server socket in a
1631 range of port numbers (ease to avoid port number conflicts) [MQ]
1632 * New! gras processes display their backtrace when they get a SIGUSR1
1633 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
1634 Sweet to debug RL processes [MQ]
1638 - Do not force experiment sizes to be expressed in kb, or it becomes
1639 impossible to measure the latency this way (needs one byte-long tests)
1640 WARNING: this changes the amok_bw_* function semantic. [MQ]
1641 - Implements the link saturation stuff. [MQ]
1642 * Peer management module:
1643 New! module factorizing code that we wrote over and over [MQ].
1646 * New module: cunit (my jUnit implementation in ansi C) [MQ]
1647 - Test units are placed directly into the library code, they get extracted
1648 automatically and placed into the src/testall binary.
1649 - Convert most of the XBT tests to this system.
1650 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
1651 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
1652 live in the same C code. This required to change a little bit the API
1653 of surfxml parsing but shouldn't be an issue for end-users. [AL]
1654 * New module: sparse graph structure with basic algorithms (this is work
1655 in progress and the API is not considered to be frozen yet). [AL]
1656 * Display more information on backtraces: source line & function names are
1657 now displayed just like valgrind does (rely on addr2line tool) [MQ]
1658 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
1659 * Reworked a little bit some #include statements to load only required
1660 headers. Some user code that relied on SimGrid to include stdlib or
1661 stdio may need to include it by themselves. [AL]
1662 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
1664 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
1665 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
1666 but I guess that almost nobody used those parts. [MQ]
1668 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
1670 SimGrid (3.0.1) stable; urgency=low
1673 * Unfortunately, I had missed 5 misnamed functions:
1674 xbt_fifo_item_t xbt_fifo_newitem(void);
1675 void xbt_fifo_freeitem(xbt_fifo_item_t);
1676 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
1677 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
1678 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
1679 They're now deprecated. Please use their new versions:
1680 xbt_fifo_item_t xbt_fifo_new_item(void);
1681 void xbt_fifo_free_item(xbt_fifo_item_t);
1682 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
1683 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
1684 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
1686 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
1687 * Documentation: xbt_log module unmercifully reworked [MQ]
1688 * Bugfix: there was a problem with the ending of contexts with
1689 the pthread backend. It caused some weird deadlock or behavior
1690 depending on the pthread implementation. [AL]
1691 * Bugfix: get the exceptions raised in the simulator repport where
1692 and why they come from when they are not catched in time [AL, MQ]
1695 * Bugfix: Do repport the error when two non-connected hosts try to
1696 exchange data (Thanks to Flavien for stumbling into this one) [AL]
1699 * Add additionnal checkings on communications. Assert that two
1700 communicating hosts are connected by a set of links... [AL]
1703 * Add additionnal checkings on channel values in communication [AL]
1704 * New: MSG_task_get_source to see on which host a task was generated [HC]
1705 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
1706 the number of tasks waiting to be received on channel and sent
1708 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
1709 waits for the first task coming from a given host.. [AL]
1711 GRAS new functionnalities: [MQ]
1712 * Enhance the parsing macro to allow the size of multidimentional objects
1713 to be given thru annotations.
1714 * New example (and documentation): Matrix Multiplication a la RPC
1715 (as when I was young!) and fix a bunch of bugs found on the way.
1717 GRAS performance improvements: [MQ]
1719 * Reduce the amount of cbps creation/destruction by making it static to
1720 datadesc_send/recv() and using a (newly created) cbps_reset (based on
1723 * Change libdata to a set so that we can search for stuff by ID (and thus
1724 reduce the insane amount of dict lookups)
1727 * Actually implement gras_datadesc_copy() so that we don't have to mimick
1728 RL communication on top of SG since it's so uneffective.
1729 It may also be used for inter-thread communication in RL, one day.
1730 * Use gras_datadesc_copy() to exchange messages on top of SG
1732 - improve message exchange performance on top of SG
1733 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
1734 * Don't exchange on the network the size of the used part of buffer,
1735 instead, specify the possible buffer size to read().
1737 - reduces the amount of read/write calls (one pair per exchange)
1738 - reduces the amount of exchanged data (the size)
1739 - allows to retrieve all arrived data on receiver side, if we don't need
1740 it right now (subsequent read will peek the buffer)
1741 - allows the receiver to proceed with the begining of the stream before
1742 everything is arrived
1743 - make it possible to build an iov transport (using readv/writev)
1745 - take care of the data with non-stable storage (like stacked data),
1747 * If possible, TCP send uses vector I/O (when writev() is here)
1748 - Don't use it for receive since we send data sizes and data on the
1749 same stream, so we wouldn't be able to chain large amount of chunks
1750 before having to flush the stuff to read the size.
1751 * Rework the transport plugin mecanism to simplify it and reduce the
1752 amount of pointer dereferencement when searching for the right function
1755 * I guess that now, we do almost as few system calls as possible while
1756 doing as few data copy as possible.
1758 To improve it further, we could try to send all the sizes first and then
1759 all the data (to use iov on receiving size), but it's only a partial
1760 solution: when you have 2 dimensional data, the sizes of the second
1761 dimension is data of the first dimension, so you need 3 streams.
1763 I'm not sure the potential performance gains justify the coding burden.
1765 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
1767 SimGrid (3.00) stable; urgency=high
1770 * New! Give the possibility to hijack the surf parser and thus bypass
1771 MSG_create_environment and MSG_launch_application. Have a look at
1772 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
1774 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
1776 SimGrid (2.96) unstable; urgency=low
1781 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
1782 This deprecates the xbt_error_t mecanisms.
1783 It modifies (simplifies) all XBT and GRAS API.
1784 MSG API keeps unchanged (exceptions raised by XBT are catched from
1785 within MSG and masked with existing error handling facilities)
1788 * New! Add a FATPIPE model. [AL]
1789 * New! Add a parallel task model. [AL]
1790 * New! Add automatically a loopback interface (in the default
1791 network model) if none was precised.
1794 * Bugfix: MSG_process_resume now works with the current running process.
1796 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
1797 * Modification of MSG_task_get_compute_duration. Once a task has been
1798 processed, the value returned by this function is now equal to 0. [AL]
1799 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
1800 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
1801 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
1802 of a m_task. For now, MSG_task_cancel only works with computation
1804 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
1805 of the processor (in Mflop/s) regardless of the current load on the
1807 * API Change: use proper naming convention for MSG_getClock and
1808 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
1810 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
1811 This function changes the priority of a computation task. This priority
1812 doesn't affect the transfer rate. A priority of 2 will make a task
1813 receive two times more cpu power than the other ones. This function
1814 has been added to suit the needs of Nguyen The Loc and hasn't been that
1815 much tested yet. So if it fails, please report it and send me your code.
1817 * API Change: removed all functions and types that were marked "deprecated"
1818 since many months. Renamed MSG_global_init_args to MSG_global_init.
1820 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
1822 SimGrid (2.95) unstable; urgency=low
1825 * Steal some nice code to GNU pth to fix context detection and usage [AL]
1826 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
1827 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
1830 * Bugfix: Allow absolute paths for platform description files [MQ]
1831 * Bugfix: do free the variables after use. Leads to drastic performance
1833 * Implement max_duration (ie, timeouts) on resources [AL]
1836 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
1838 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
1839 the needed support (timeouts) [AL]
1842 * Implement measurement sockets. You can now get the bandwidth between two
1843 hosts thanks to AMOK (see below). [MQ]
1844 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
1845 dynar over the network (yeah) [MQ]
1846 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
1847 * simple/static token-ring example. [Alexandre Colucci and MQ]
1848 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
1849 in place before [MQ]
1852 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
1853 type parsing. "short" and "long" modifiers were also ignored; other
1854 modifier (such as reference level) are still ignored. [MQ]
1855 * Embeed the buffer size within the buffer itself on SG. [MQ]
1856 That way, send() are atomic and cannot get intermixed anymore (at least
1857 the ones which are less than 100k; bigger messages still have the issue)
1858 * Array size pushed by the field, not by the field type (or each
1859 and every long int will push stuff to the cbps) [MQ]
1860 * use select() to sleep since it allows to portably sleep less than one
1863 GRAS (minor cleanups)
1864 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
1867 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
1868 * type category 'ignored' killed as it was never used and were difficult
1870 * whether a type can cycle or not is now a flag, leaving room for more
1871 flags (as "ignored", if we feel the need one day ;)
1872 * Rename raw sockets to measurement sockets since "raw" has another
1873 meaning in networking community.
1876 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
1877 and offers features not belonging to GRAS but that most applications
1878 need. One day, it may be a set of plugins loadable at runtime.
1879 * New module: bandwidth
1880 bandwidth measurement between arbitrary nodes running this module. [MQ]
1882 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
1884 SimGrid (2.94) unstable; urgency=low
1886 The first beta release of SimGrid 3 !
1890 * Update the main page and the FAQ. Adding references to gforge.
1893 * Add a gras_os_getpid function.
1896 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
1897 * Extend the logs so that they also print PID, hostname, date, ... if
1899 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
1900 and kill the old version which were in testsuite/
1901 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
1905 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
1906 for users. Instead, each programming environment (GRAS, MSG,...) use it
1907 when needed to provide such a feature to users.
1908 Don't shortcut the mecanism or you will also shortcut the virtualization
1909 you need on the simulator.
1913 * Cleanups in configury with regard to compile optimization/warning flags.
1914 Also add -fno-loop-optimize to any powerpc since it's the optimization
1915 killing gcc (< 3.4.0).
1916 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
1917 needed by MSG examples complications
1918 * Borrow configury beautifications from PHP
1921 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
1922 warning (thanks loris for stumbling into this one).
1923 * Bugfix: stop loading private headers (gras_config.h) from the public
1927 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
1928 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
1929 RL would imply a DNS resolver, which is *hard* to do in a portable way
1930 (and therefore delayed).
1931 * Implement a real timer mecanism and use it in timing macros. This allows
1932 to avoid rounding errors and get a 0.000005 sec precision in timing
1933 macros. While I was at it, various cleanups:
1934 - allow to declare more than one timed section per file (fix a stupid bug)
1935 - move some private declaration to the right place
1936 - merge conditional execution and timing macros into emulation module
1937 - document the module
1938 - make sure the module cleanups its mess on gras_exit
1939 * Documentation improvements:
1940 - (new) how to compile applications using GRAS
1941 - (new) emulation support (timing macros)
1943 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
1945 SimGrid (2.93) unstable; urgency=low
1947 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
1950 - Use Paje properly where used. Still to be sanitized properly.
1951 - Portability fix: Add an implementation of the contexts using pthread
1955 - Add xbt_procname(): returns the name of the current process.
1956 Use it to show the current process's name in all logging.
1958 - fix detection of older flex version and the reaction, since we do
1959 depend on modern ones (we use lex_destroy)
1960 - Better separation of SG and RL in the libs: remove all simulation code
1961 from libgras. As a result, this lib is now only 200k when stripped.
1962 Some of the xbt modules may also be duplicated (two sets and such) and
1963 should be cleaned/killed before SG3.
1964 - Insist on using xlC on AIX because of weird problems involving gcc there.
1965 - Cleanup the make remote stuff. This is now done by scripts
1966 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
1967 mainly for our private use, but we're working on changing them to user
1970 - Bugfix: flush the socket on close only if there is some *output*.
1971 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
1973 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
1976 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
1978 SimGrid (2.92) unstable; urgency=low
1980 Alpha 3 on the path to SimGrid 3
1984 - New! First try of benchmarking macros.
1985 - New! First try so that gras_stub_generator generate deployment and
1986 remote compilation helpers.
1988 - Bugfix: Initialization fix in msg_test.
1992 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
1994 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
1996 - API Change: gras_os_sleep to take the amount of seconds as a double.
1997 Accepting an int was error prone since it was the only location where
1998 seconds were coded as such. It leaded to damn rounding errors.
1999 - Bugfix: Hard to belive that timers ever worked before this.
2001 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
2003 SimGrid (2.91) unstable; urgency=low
2005 Alpha 2 on the path to SimGrid 3
2009 - Bug fix in the lmm_solver.
2011 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
2012 through the function MSG_paje_output.
2013 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
2014 - It is possible to bound the rate of a communication in MSG with
2015 MSG_task_put_bounded() (was already in the previous version but I had forgotten
2016 to write it in the changelog).
2017 - Bug fix to let GRAS run on top of MSG until we move it directly on top
2022 - Various cleanups to the autotools stuff
2023 - Begin to move Gras examples to examples/gras/
2024 - Let make distcheck work again (yeah!)
2026 - documentation overhauled using doxygen.
2027 gtk-doc-tools is dead in SimGrid now.
2028 - Automatically extract all existing logging categories, and add the list
2029 to the documentation (long standing one, to say the less)
2031 - Cleanup the known architecture table. Reorder the entries to group what
2032 should be, and use a more consistent naming scheme.
2033 (some of the test dataset are still to be regenerated)
2034 - New! Allow library to register globals on each process just as userdata
2036 This is implemented using a xbt_dict and not a xbt_set, so we loose the
2037 lookup time (for now).
2038 Use it in msg and trp.
2039 This cleans a lot the internals and helps enforcing privacy of the
2040 headers between the gras components.
2041 - New! Add a timer mechanism, not unlike cron(8) and at(1).
2042 - Bugfix: gras_os_time was delirious in RL.
2043 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
2045 - Reenable GRAS now that it works.
2047 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
2049 SimGrid (2.90) unstable; urgency=low
2051 Alpha 1 on the path to SimGrid 3
2053 * It is a long time since the last release of SimGrid. I'm sorry about
2054 that but as I had told you, I was rewriting a lot of things. I apologize
2055 to those who had been reporting bugs to me and that I had not answered.
2056 If your bug is still in the new version, please tell me. Here is a
2057 summary of the main changes.
2059 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
2060 lead by Martin Quinson. As a consequence SimGrid gains a lot in
2061 portability, speed, and a lot more but you'll figure it out later.
2062 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
2063 I wanted to release the new MSG as soon as possible and I have
2064 broken GRAS, which is the reason why, for now, only MSG is fully
2065 functional. A laconic description of these projects is available
2066 in the documentation.
2068 * REVOLUTION 2: I have removed SG and I am now using a new simulation
2069 kernel optimized for our needs (called SURF but only the developers
2070 should use it). Hence, MSG is now roughly 30 times faster and I think
2071 that by rewriting a little bit MSG, I could event speed it up a little
2072 bit more. Beside the gain in speed, it is also much easier to encode a
2073 new platform model with SURF than it was with SG. More to come...
2075 * REVOLUTION 3: I have tried to change a little as possible the API of
2076 MSG but a few things really had to disappear. The main differences
2077 with the previous version are :
2078 1) no more m_links_t and the corresponding functions. Platforms are
2079 directly read from a XML description and cannot be hard-coded
2080 anymore. The same format is used for application deployment
2081 description. The new format is described in the documentation.
2082 Have a look in tools/platform_generation. There is a tiny script
2083 that converts from the old platform format to the new one. Concerning
2084 the application deployment format, parsing the old one is tricky.
2085 I think most of you should however be able to convert your files. If
2086 it is really an issue, I can write a C code that does the conversion.
2088 2) the toolbox tbx does not exist anymore. We now have a library
2089 with much more data-structures but without the hash-tables (we have
2090 dictionaries that are much faster).
2092 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
2094 *****************************************************************************
2095 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
2096 * don't feel like converting the oldies. (Mt) *
2097 *****************************************************************************
2100 Version 2.90: "the long awaited one"
2101 - Finished rewriting and debugging MSG. Rewrote the documentation.
2102 - disable GRAS for now since it needs to be ported to the newest SG
2105 - Finish the port to windows (using mingw32 for cross-compile)
2108 - Main loop and datastructures of SURF. A cpu resource object is
2109 functional. Surf can thus be used to create cpu's with variable
2110 performance on which you can execute some actions.
2112 2004-11-15 Martin Quinson
2113 - Port to ARM. Simply added the alignment and size descriptions. Should
2114 work, but the ARM machines are so slow that I didn't had the opportunity
2115 to 'make check' over there yet.
2117 2004-11-15 Arnaud Legrand
2118 - Trace manager now written. It uses a heap structure and is therefore
2119 expected to be efficient. It may however be speeded up (particularly
2120 when many events occur at the same date) by using red and black
2121 trees. One day maybe...
2122 - Max-min linear system solver written. It uses a sparse matrix
2123 structure taking advantage of its expected use. Most operations are
2124 O(1) and free/calloc are called as few as possible. The computation of
2125 the minimum could however be improved by using a red and black tree
2128 2004-11-03 Arnaud Legrand
2129 - Rename every gras_* function that was in xbt/ to its xbt_
2131 - Add a heap and a doubly-linked list to xbt
2132 - Added a dichotomy to the dictionaries. make check works as well before
2133 so I assume that the patch is correct. I do not know however if things
2134 run effectively faster than before now. :)
2136 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
2137 SimGrid, and the version number is bumped to 2.x
2139 2004-10-29 Martin Quinson
2140 - Introduction of the remote errors.
2141 They are the result of a RMI/RPC on the remote machine.
2142 ErrCodes being scalar values, you can't get the host on which those
2143 errors did happen. Extending the error mechanism as in Gnome is possible.
2144 No idea yet whether it is a good idea.
2146 2004-10-28 Martin Quinson
2147 - Interface revolution: the Starred Structure Eradication.
2148 I used to do typedef struct {} toto_t; and then handle *toto_t.
2149 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
2150 - ???_t is a valid type (builded with typedef)
2151 - s_toto_t is a structure (access to fields with .)
2152 - s_toto is a structure needing 'struct' keyword to be used
2153 - e_toto_t is an enum
2154 - toto_t is an 'object' (struct*)
2156 typedef struct s_toto {} s_toto_t, *toto_t;
2157 typedef enum {} e_toto_t;
2158 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
2159 s_toto_t) is private.
2161 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
2162 so that it can set the variable to NULL. It was so for dicts and sets,
2163 it changed for dynars.
2165 - Fix a bunch of memleaks in dict_remove
2166 - Fix a bug in sg/server_socket opening: it failed all the time.
2168 2004-10-07 Martin Quinson
2169 - Speed up dynar lookup operation a bit.
2171 gras_dynar_get is dead.
2173 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
2174 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
2175 (which gives you the address of the stored data).
2177 gras_dynar_get_as is an helpful macro which allows you to retrieve a
2178 copy of the data using an affectation to do the job and not a memcpy.
2180 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
2181 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
2183 It does not really speedup the dynar test because they are
2184 setting elements all the time (and look them seldom). But the dict does
2185 far more lookup than setting.
2187 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
2189 2004-10-05 Martin Quinson
2190 - Allow to (en/dis)able the cycle detection at run time.
2192 Whether we should check for cycle or not is now a property of each
2193 datatype. When you think there may be some cycle, use datadesc_cycle_set.
2194 datadesc_cycle_unset allow to remove this property when previously set.
2196 Note that the cycle detection is off by default since it impacts the
2197 performance. Watch the data you feed GRAS with ;)
2199 This property is hereditary. Any element embedded in a structure having it
2200 set have it set for the time of this data exchange.
2202 You should set it both on sender and receiver side. If you don't set it on
2203 sender side, it will enter an endless loop. If you forget on receiver
2204 side, the cycles won't be recreated after communication.
2206 - Header reorganization.
2207 Kill gras_private.h, each submodule must load the headers it needs.
2209 2004-10-04 Martin Quinson
2210 - Interface revolution: do not try to survive to malloc failure.
2212 Now, gras_malloc and friends call gras_abort() on failure.
2213 As a conclusion, malloc_error is not a valid error anymore, and all
2214 functions for which it was the only gras_error_t return value are
2215 changed. They now return void, or there result directly.
2216 This simplify the API a lot.
2218 2004-09-29 Martin Quinson
2219 - Re-enable raw sockets.
2220 Created by gras_socket_{client,server}_ext;
2221 Used with gras_raw_{send,recv}
2224 It should allow to kill the last bits of gras first version soon.
2226 This is not completely satisfactory yet (duplicate code with
2227 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
2230 - Simplify transport plugin (internal) interface by not passing any
2231 argument to _server and _client, but embedding them in the socket
2234 2004-09-28 Martin Quinson
2235 - Finish the port to AIX.
2236 autoconf was my problem (segfault within the malloc replacement
2237 function. No idea why)
2239 2004-09-16 Martin Quinson
2240 - Fix some size_t madness on 64bit architectures.
2242 2004-09-08 Martin Quinson
2243 - Reduce the number of system headers loaded, overload some more system
2244 calls (such as malloc to cast the result of the system one, and work
2246 - Fix and reintroduce the config support
2248 2004-09-07 Martin Quinson
2249 - Source code reorganization to allow Arnaud to surf all over there.
2250 - Allow to document the logging categories.
2251 - Remove all uppercase from logging categories and useless cleanup in names.
2253 2004-08-18 Martin Quinson
2254 Version 0.6.2 (protocol not changed; API changed)
2255 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
2256 gras_error_t), and NULL when not found. Functions expecting a msgtype
2257 as argument (msg_wait; msg_send) deal with NULL argument by providing a
2258 hopefully usefull message.
2259 - Portability to prehistoric sparcs again
2261 2004-08-17 Martin Quinson
2262 Version 0.6.1 (protocol not changed; ABI not changed)
2263 - prealloc some buffers to speed things up
2265 2004-08-11 Martin Quinson
2266 Version 0.6 (protocol not changed; ABI expended)
2267 - The parsing macro can deal with the references, provided that you add
2268 the relevant annotations (using GRAS_ANNOTE(size,field_name))
2270 2004-08-09 Martin Quinson
2271 Version 0.5 (protocol not changed; ABI changed)
2272 - Allow to off turn the cycle detection code in data exchange at
2273 compilation time. It should be at run time, but I'm short of time (and
2274 the config stuff is still broken). That way, we keep dict out of the
2275 critical path, which is good because the performance is poor:
2276 - search not dichotomial yet
2277 - dynar give no way to access their content and memcpy everytime
2278 - In composed data description (struct, ref and so on), stop foolness of
2279 keeping the subtype's ID, but store the type itself. This keeps sets out
2280 of the critical path, which is good since they rely on dynar and
2281 dictionnaries. The only loose of that is that we cannot detect the
2282 redeclaration of a structure/union with another content (but I'm not sure
2283 the code detected well this error before anyway). We still can detect
2284 the redefinition discrepancy for the other types.
2285 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
2286 it breaks the code because of type-punning used all over the place).
2287 This breaks on all non-gcc architectures (for now).
2289 All those changes (plus the buffer of last time) allow me to gain 2 order
2290 of magnitude on cruel tests consisting of 800000 array of integers on two
2291 level of a hierarchical structure (200 secondes -> 4 secondes)
2294 - the selector of reference must now return the type it points to, not
2295 the ID of this type.
2297 2004-08-06 Martin Quinson
2298 Version 0.4 (protocol changed; ABI not changed)
2299 - Allow to pass --gras-log argument to processes in simulation mode. Really.
2300 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
2301 - Implement a buffer transport, and use it by default (it relies on tcp in
2302 real life and on sg in simulation).
2303 That's a bit hackish since I had a new field to the structure to store
2304 its data without interfering with the subtype ones. Inheritance
2305 is tricky in C. And that's a kind of reverse inheritance with one class
2306 derivating two classes. Or maybe a game with java interfaces. Anyway,
2307 that's damn hard in C (at least).
2308 Moreover, I got tired while trying to ensure plugin separation and
2309 genericity in SG mode. MSG wants me to do weird things, so let's go for
2310 cruel hacks (temporarily of course ;).
2311 See comment in transport_private.h:71
2312 - do not include all the _interface headers in private but in the files
2313 which really need them (to cut the compilation time when they are
2316 2004-07-26 Martin Quinson
2317 Version 0.3 (protocol not changed; ABI changed)
2318 - Major overhault of the datadesc interface to simplify it:
2319 - shorted the function names:
2320 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
2321 - add a trivial way to push/pop integers into the cbps without malloc.
2322 This allows to make really generic sub_type description, which simply
2323 pop their size of the stack.
2324 - add a function gras_datadesc_ref_pop_arr() which does what users want
2325 most of the time: Declare a dynamic array (which pops its size of the
2326 stack) and declare a reference to it. Poor name, but anyway.
2327 - kill the post-send callback, add a post-receive one
2329 2004-07-23 Martin Quinson
2330 Version 0.2 (protocol changed; ABI changed)
2331 - add some testing for cpbs in the test cases, and fix some more bugs.
2332 This invalidate again the little64 data file, since I cannot regenerate
2334 - remove an awfull optimization in the logging stuff, allowing me to:
2335 - understand it again
2336 - learn gcc how to check that the argument match the provided format
2337 - fix all errors revealed by gcc after that
2338 - internal keys of dict are not \0 terminated. Deal with it properly in
2339 loggings instead of segfaulting when the user want to see the logs :-/
2341 2004-07-22 Martin Quinson
2342 - Fix some stupid bug preventing cbps (callback postit) from working
2344 2004-07-21 Martin Quinson
2345 - Some documentation cleanups
2346 - remove the useless last argument of msgtype_declare
2347 - rename the Virtu functions to fit into the 'os' namespace
2348 - move headers src/include -> src/include/gras/ and stop fooling with
2349 gras -> . symbolic link
2350 - make distcheck is now successful
2352 2004-07-19 Martin Quinson
2354 - Build shared library also
2355 - Install html doc to the right location
2356 - stop removing maintainer files in make clean
2357 - build tests only on make check
2359 2004-07-13 Martin Quinson
2361 - No major issue in previous version => change versionning schema
2362 - Re-enable little64 convertion test now that Abdou kindly regenerated the
2363 corresponding dataset.
2365 2004-07-11 Martin Quinson
2367 - Get it working with any kind of structure (we can compute the padding
2368 bytes remotely for all the architectures I have access to)
2369 - Implement the structure parsing macro (still not quite robust/complete)
2370 - Improvement to the remote testing toysuite
2372 2004-07-10 Martin Quinson
2373 [autoconf mechanism]
2374 - get ride of a bunch of deprecated macros
2375 - actually run the test for two-compliment, not only compile it :-/
2376 - test whether the structures get packed (and bail out if yes. Damn.
2377 Alignment is a serious matter)
2378 - test whether the structures get compacted (but respecting the alignment
2379 constraints of each types)
2380 - test whether the array fields of structures can straddle alignment boundaries
2382 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
2383 (took me 2 hours to find that bug, looking at the wrong place)
2384 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
2385 before sending/receiving and are used to compute the offsets of fields
2386 - Given that padding size depend even on compiler options, keep track of
2387 alignment and aligned_size only for the current architecture. Not a big
2388 deal since we send structure fields one after the other (seems
2390 - Add the datastructure used for IEEE paper by the PBIO guys to the test
2391 program, let it work on linux/gcc/little32. portability todo.
2393 2004-07-08 Martin Quinson
2394 - import and improve remote compilation support from FAST
2395 - make sure make check works on half a dozen of machines out there
2397 2004-07-07 Martin Quinson
2398 Let's say it's version 0.0.3 ;)
2399 - Implement conversions (yuhu!)
2400 - Let it work on solaris (beside conversion, of course)
2401 - Stupid me, using rand() to generate the conversion datatests in not wise.
2403 2004-07-06 Martin Quinson
2404 - Let make dist work, since I'm gonna need it to compile on remote hosts
2405 - Let Tests/datadesc_usage write the architecture on which the file was
2406 generated as first byte.
2407 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
2408 architecture descriptions.
2409 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
2410 on those architectures.
2411 - Optimization: send/recv array of scalar in one shoot
2413 2004-07-05 Martin Quinson
2414 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
2416 - Plug a whole bunch of memleaks
2417 - each process now have to call gras_{init,exit}. One day, their log
2418 settings will be separated
2419 - Continue the code factorisation between SG, RL and common in Transport.
2421 2004-07-04 Martin Quinson
2423 - Redistribution between SG and RL.
2424 We wanna have to accept in SG, so move accepted related parts of RL in
2425 the common part. (more precisely, the dynar of all known sockets is no
2426 more a static in transport.c, but part of the process_data)
2428 [gras_stub_generator]
2429 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
2431 2004-07-03 Martin Quinson
2432 - Create a new log channel tbx containing dict, set, log, dynar (to shut
2433 them all up in one shot)
2435 - Fix the ugly case of reference to dynamic array.
2436 - New (semi-public) function gras_datadesc_size to allow the messaging
2437 layer to malloc the needed space for the buffer.
2439 - gras_socket_close now expect the socket to close (and not its address to
2440 put NULL in it after it). This is because the socket passed to handlers
2441 is one of their argument (=> not writable).
2443 - propagate the interface cleanup from last week in datadesc, ie remove a
2444 superfluous level of indirection. User pass adress of variable
2445 containing data (both when sending and receiving), and not of a variable
2446 being a pointer to the data. Let's say that I like it better ;)
2447 The price for that is constructs like "int msg=*(int*)payload" in
2448 handlers, but it's a fine price, IMHO.
2450 - Let it work in RL (yuhu)
2452 2004-06-21 Martin Quinson
2454 - porting SG plugin and SG select to new standards (works almost).
2455 - plug memleaks and fix bugs around.
2458 - cleanup the prototype of data recv and force users to specify when they
2459 want to handle references to objects. Test case working even for cycles.
2460 - plug memleaks. Valgrind is perfectly ok with this.
2462 2004-06-12 Martin Quinson
2464 - cleanup the separation between plugin and main code in plugin creation
2466 2004-06-11 Martin Quinson
2468 - Reput hook for raw sockets, needed for BW experiments
2469 - kill a few lines of dead code
2470 [Data description] Interface cleanup
2471 - gras_datadesc_by_name returns the searched type or NULL.
2472 That way, no variable is needed to use a type desc once, which makes
2474 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
2475 two parameters were strings (field name, type name), leading to
2477 [Dicos] Interface cleanup
2478 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
2479 This is consistant with the dynar API.
2481 2004-04-21 Martin Quinson
2483 - Porting to new standards.
2485 - interface cleanup.
2486 There is no bag anymore, no need to take extra provision to mask the
2487 pointers behind "ID".
2488 Better splitup of functions between files create/exchange/convert.
2489 This is still a bit artificial since convert and receive are so
2490 interleaved, but anyway.
2492 - add a queued message list to procdata (the ones not matching criteria
2494 - factorize some more code between SG and RL wrt procdata
2496 - use gras_exit in example to track memleaks
2497 - get rid of gs_example now that GS is properly integrated into gras
2498 - update run_test to integrate the latest tests (datadesc)
2500 - rename WARNINGn macros to WARNn since it prooved error-prone
2502 2004-04-19 Martin Quinson
2504 - register init/exit functions within gras module mechanism
2505 - send/receive function.
2506 Convertion is not implemented, but short-cutted if not needed.
2507 struct/array elements are sent one by one (instead of block-wise), but
2508 nobody really cares (yet). Get a prototype before optimizing.
2509 - tests (using a file socket) for DD send/receive on:
2510 - base types: int, float
2511 - array: fixed size, string (ie ref to dynamic string)
2512 - structure: homogeneous, heterogeneous
2513 - chained list, graph with cycle
2514 Believe it or not, valgrind is not too unhappy with the results. The
2515 cycle happily segfaults, but the others are ok. And I'm sick of pointers
2519 - Bugfix when using a filename explicitely (instead of '-')
2521 2004-04-09 Martin Quinson
2523 - factorize more code between RL and SG in socket creation
2524 - Complete the implementation and tests of:
2526 o file (only in RL, and mainly for debugging)
2528 I lost 3 days to design a portable address resolver, and then decided
2529 that the prototype mainly have to run on my box.
2530 Addressing portability too early may be like optimizing too early :-/
2532 - use gras_init in the Tests instead of the crappy parse_log_opt
2533 (the latter function is removed)
2534 [Conditional execution]
2535 - New functions: gras_if_RL/gras_if_SG (basic support for this)
2536 [Code reorganisation]
2537 - Get rid of libgrasutils.a since it makes more trouble than it solves.
2538 Build examples against the RL library, since there is no way to disable
2539 its creation for now.
2541 For information, the beginning of coding on GRAS was back in june
2542 2003. I guess that every line has been rewritten at least twice since