1 SimGrid (3.9) NOT RELEASED; urgency=low
3 The Grasgory release: GRAS is really dead now.
6 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
7 was considered as experimental and badly maintained since then.
8 * Keeping it was thus a trap to our potential users, that could take
9 it instead of MSG or SMPI by mistake despite is pity state.
10 * GRAS seems to have very few users (if any), and no one volunteered
11 to maintain it further. It also induces a lot of XBT code (for
12 portability sake), that must be maintained too.
13 * For all these reasons, we killed GRAS. If someone wants to revive it
14 in the future, don't cry, our git history still remembers of GRAS.
17 * Now works on Windows too!
18 * Much more extensive test suite, from MPICH
21 * New function: MSG_process_get_number()
22 * Old function documented: MSG_config()
25 * Change the default value of the TCP_gamma constant (maximal size of TCP
26 congestion window) to a more realistic 4MiB value. If you notice changes in
27 your simulation results, you can fall back to the previous 20k tiny window
28 by adding --cfg=network/TCP_gamma:20000 on command line.
29 * Bug fix about the way periodic availability/state traces are handled.
30 * Bug fix: use default values at start when first event in availability/state
31 trace is not at time 0.
34 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
35 usecase where it's really mandatory, and maintaining it was a pain in
37 * New: xbt_fifo_search(), search an item with a user-provided
38 comparison function instead of dumb pointer comparison.
40 -- $date Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
42 SimGrid (3.8.1) stable; urgency=low
44 The "we are told that some people want to also *install* the simgrid
47 * Add missing file "tesh.1" to the archive.
49 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
51 SimGrid (3.8) stable; urgency=low
53 The Psssshiiiit release: SimGrid jumps into the Cloud.
56 * Add an experimental interface to manipulate VMs. They are mainly
57 process groups with very few intrinsic semantic, but they should
58 allow you to build the semantic you want easily.
59 * New function: MSG_host_set_property_value()
60 * New function: MSG_process_on_exit(). To clean memory in all cases.
61 * Bug fixes that made the host (and link) failures unusable.
62 * Add a way to auto-restart process when the host in which they are
63 executing comes back (ON_FAILURE="RESTART" on deployment file,
64 MSG_process_auto_restart_set).
65 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
66 please stop using the old ones, they are DEPRECATED.
68 * Deprecate functions MSG_global_init() / MSG_global_init_args()
69 Please use MSG_init() instead. (reducing the amount of entry
70 points in the library helps us).
71 * Make it impossible to link against the wrong version of the lib
72 * Deprecate MSG_clean(). No need to call it anymore.
73 * Function MSG_get_host_number() is not deprecated anymore.
76 * Split the doc into a user guide and a reference guide.
77 * Start a developper guide to help people hacking on SimGrid.
80 * Enable tracing by default. This modules rocks you should use it.
81 * Remove option custom_flags. Now use environment variables CFLAGS
83 * Use default cmake things to detect lua instead of home grown ones.
84 * New option "enable_mallocators" to disable mallocators, for debugging
85 purpose ("on" by default).
88 * Bug fixes around the resource failures: don't let the processes
89 survive the host they are running onto.
90 * Add an interface to auto-restart processes when the host in which they are
92 * Ensures that SIMIX_clean is called automatically. It's not part of
93 the public interface anymore (bindings should be updated).
96 * Bug fix for when SD_Simulate is called with a positive value: be careful
97 when comparing doubles. Sometimes they are different for non significant
99 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
100 parallel task whose initial work is distributed among host according
101 to the Amdahl's law. Such tasks are created with a parameter alpha
102 that corresponds to the non-parallelizable part of the computation.
103 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
104 between two sets of workstations assuming a 1D block distribution (each
105 workstation owns a similar share of data) on both sides.
107 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
108 Data redistribution will be automatically scheduled once parent and child
109 are both scheduled. The filling of computation_amount and
110 communication_amount structures is now done seamlessly thanks to the chosen
112 * New function SD_workstation_dump to display various information
113 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
114 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
115 bandwidth on the route onto which the task is scheduled and the amount of
117 To divide the nominal bandwidth by 2, the rate then has to be :
118 rate = bandwidth/(2*amount)
119 * Compute tasks that have failed can now be rescheduled and executed again
120 (from their beginning)
121 * Increasing source code coverage (src/simdag is now covered at 95.8%
125 * Re-implement time-independent trace replay using SMPI (at the
126 smpi_smp_* level) instead of MSG. This should replace
127 examples/msg/actions/actions.c
128 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
129 hindexed and structs)
130 * Implement the exchange of non-contiguous data.
131 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
132 * Correct behavior of smpi/sender_gap and set its default value to 0
133 * Add option to asynchronously send small messages to allow better
134 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
135 specifies the size in bytes under which messages will be asynchronously sent.
136 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
137 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
140 * New C interface to define a platform: XML is now optional.
141 For more info, please check include/simgrid/platf.h.
142 * New interface to define random platforms from the C:
143 For more info, please check include/simgrid/platf_generator.h and
144 examples/msg/masterslave/masterslave_platfgen.c
145 * Export a sg_cmdline dynar containing all the arguments we got from
149 * Two new tracing options for adding comments to trace file so you
150 can track your experiments (see --help-tracing for details).
151 * New option to generate a impoverished trace file (--cfg=tracing/basic:1)
152 * Adding the SimGrid version that generated the trace file as a comment.
153 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
154 * Fix to avoid key clashes on Paje links
155 * Other minor fixes related to the Paje specification
158 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
159 and renamed to xbt_str_hash() and xbt_str_hash_ext().
160 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
161 * Greatly improve the robustness of mmalloc to user errors (such as
162 using an area after freeing it, or freeing it twice)
164 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
166 SimGrid (3.7.1) stable; urgency=low
169 * Restore the prototype of MSG_process_create_with_environment() to
170 the pre-3.7 situation by removing the kill_time argument.
171 * Add a MSG_process_set_kill_time() function instead.
174 * Fix weird behaviors when dealing with parallel tasks.
177 * Simgrid is now built as a dll.
178 * Simgrid-java now works on Windows.
179 * Simgrid-Java is now included into Windows package.
182 * First pre-build package for MacOSX.
185 * Fix compilation when using MSG_USE_DEPRECATED.
186 * Fix some compilation issues on Macs and Windows.
187 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
188 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
190 We discovered that the Lua console is broken, but we are missing the
191 manpower to fix it right now. The problem existed in 3.7 too, so we
192 are not blocking the release for that. Sorry if you depended on this
193 feature, any help would be really welcome.
195 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
197 SimGrid (3.7) stable; urgency=low
199 The "spring cleanups (before the next Big Project kicks in)" release.
202 * We can specify the SMPI latency/bandwidth factor with command line
203 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
204 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
205 You can also use the "config tag" from platform file by adding this line
206 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
207 (see "example/platforms/tag_config.xml" to use "config tag").
208 Note that the command line supersedes the platform file configuration.
209 * Change the correction factors used in LMM model, according to
210 the latest experiments described in INRIA RR-7821.
211 Accuracy should be improved this way.
212 * Use the partial invalidation optimization by default for the
213 network too. Should produce the exact same results, only faster.
214 * Major cleanup in surf to merge models and split some optimization
215 mechanisms from the core of the models. As a result you can now
216 specify which model to use (e.g., --cfg=network/model:LV08
217 --cfg=cpu/model:Cas01) and which optimization mode to use
218 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
219 Incompatible combinations should err at initialization. See
220 --help-models for the list of all models and optimization modes.
221 * The CLM03 workstation model was dropped for simplicity because it
222 used the deprecated CM02 network model. Use default instead.
223 * Rename the TCP_gamma configuration option to network/TCP_gamma
224 * Rename the coordinates configuration option to
225 network/coordinates, and document it
226 * Use now crosstraffic keyword instead of the terribly misleading
227 fullduplex keyword. It is activated by default now in the current
228 default model, use --cfg=network/crosstraffic:0 to turn it off.
229 * Ongoing refactoring the model parsing to make XML files optional
230 See include/simgrid/platf.h for details (still to be completed)
233 * Major overhaul of the documentation. Almost instructive now :/
234 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
235 functions and friends. This interface was considered as
236 deprecated since over 2 years, it's time to inform our users that it is.
237 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
238 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
239 use these (crappy) functions in your code.
240 These functions will be removed soon. Stop using them now.
241 * Deprecate MSG_get_host_{table,number}
242 Implement MSG_hosts_as_dynar() instead.
243 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
244 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
247 * Stabilize the parallel execution mode of user contexts
248 * Introduce configuration variables to control parallel execution:
249 - contexts/synchro: Synchronization mode to use when running
250 contexts in parallel (either futex, posix or busy_wait)
251 - contexts/parallel_threshold: Minimal number of user contexts
252 that must be part of a scheduling round to switch to parallel
253 execution mode (raw contexts only)
254 * Fix bugs that prevented to use suspend/resume along with
255 synchronization structures.
256 * Fix bugs in process termination that lead to invalid memory access
257 in very specific conditions.
260 * Introduce a parallel mode for the models (controlled by surf/nthreads
261 configuration item). In our tests, running the models in parallel
262 never lead to any speedups because they are so fast that the gain
263 of computing each model in parallel does not amortizes the
264 synchronization costs, even when ultra fast futexes are used.
265 This is released anyway because YMMV.
268 * Performance boost by using a swag internally to compute the set of
269 tasks that are finished and should constitute the return value of
273 * Enable it by default now that it is considered rather stable.
276 * Documentation of the tracing functions.
277 * Performance gains when tracing categorized/uncategorized resource
278 utilization by avoiding calls to get route when updating resource
279 variables. LMM constraints are being used instead.
280 * API changed to set task categories. Use MSG_task_set_category instead
281 of TRACE_msg_set_task_category, and SD_task_set_category instead
282 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
283 * Bugfix for graphicator, routes not correctly obtained, memory leaks
284 * Examples for link user variables added (see at examples/msg/tracing/)
285 * Deprecated function TRACE_msg_set_process_category completely removed
286 * Trace header updated according to the latest Paje file format
287 * Tracing network lazy updates, no longer obligate users to use full updates
288 * --cfg=tracing/platform:1 also registers power/bandwidth variables
289 * Experimental: let user code declare/set/push/pop application states for hosts
290 * API changed to allow the manual creation of graph configuration files
291 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
294 * Improve the API of Lua MSG bindings, using the Lua spirit.
295 * Each simulated process now lives in its own Lua world (globals are
296 automatically duplicated). It helps writing simulators. Will allow
297 to run Splay programs within SimGrid in the future.
298 * Add a Chord example in Lua, equivalent to the MSG one.
301 * Start the implementation of a solution to express temporal
302 properties, not only local assertions. This is still an
303 experimental work in progress, stay clear from it to be safe.
307 - Add new runtime parameters --help-logs and --help-log-categories
308 to display informations about supported logging parameters and
310 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
311 don't exists anymore.
312 * Mallocators: allow value NULL for the reset function.
314 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
315 create homogeneous dictionaries, where all the elements share the
316 same free function. Non homogeneous dictionaries will be
317 deprecated in the next release.
318 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
319 - Multi-level dictionaries are deprecated.
321 - new function xbt_dynar_search_or_negative() that is useful when
322 you have less than 2 million elements in your dynar and don't
323 want of the extra complexity of catching exceptions when the
324 element is not found.
326 - Make xbt_os_thread module (for thread portability) public.
327 Documentation is still to come, sorry.
329 - Cleanups and simplifications to make it maintainable again.
330 - Exotic features (such as memalign and valloc) were removed.
331 - The metadata were extended and improved so that the
332 model-checker becomes able to explore and inspect the heaps.
333 - This may induce a performance drop when enable_model-checking is
334 ON in cmake (even if it's not used in the simulation), but it is
335 necessary at this point to get MC working.
337 Turn model-checking OFF if simulation performance matters to you.
338 Not enabling it at runtime is not enough, disable it in cmake.
340 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
342 SimGrid (3.6.2) stable; urgency=low
344 The "Not coding new stuff allows to polish old things" release.
347 * New bindings to the NS3 packet level simulator (experimental)
348 * Use the raw (efficient) execution contexts instead of the sysv
349 (portable) ones when possible.
350 * libpcre is now mandatory in any cases since not using it led to
351 severe performance loss and possibly other issues
352 * Update the XML platforms:
353 - G5K: include the latest machine in Nancy
354 - GridPP and LCG: new platforms
355 * Documentation was partially updated, at least (more to come)
357 Bug fixes, cosmetics and small improvements
358 * Free terminated processes before the end of the simulation to avoid
359 exhausting the memory of users having very dynamic amount of
361 * Bug fix and cosmetics about canceling non-running tasks
362 * Bug fix about the dot loader's issues when using libcgraph
365 * Create an installer for windows with nsis (amd64 and win32)
366 - Add an hello world project to illustrate simgrid project creation.
367 - Embed libpcre into the Simgrid installer to avoid
368 its compilation burden
369 * The raw execution contexts should work on Apple now
370 * Port to Windows 64 bits
371 - Sysv contexts now have an implementation for this arch
372 - GRAS communication features now support this arch
373 * Drop support for borland compiler on windows
374 - this code was not maintained, and we kinda depend on gcc nowadays
375 * Fix portability issues on kfreebsd/gnu: build error about semaphores
376 * Fix portability issue on unstable ubuntu: linker became picky on
379 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
381 SimGrid (3.6.1) stable; urgency=low
383 The "Oops, we broke Macs too" release
386 * Fixed contexts detection so that raw ones are used when possible
387 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
388 leads to a strange error, with user code segfaulting sometimes when
389 the generated code is not perfectly aligned (which is not
390 controllable from the user side, depends on the amount of code)
393 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
395 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
397 SimGrid (3.6) stable; urgency=medium
399 The Summer Release, also known as the "OMG! They Killed Kenny!" version
402 * Bindings now constitute their own package, separated from the main one.
403 Rationale: reduce our maintenance nightmare by reducing the module coupling
404 They will soon be released on their own on gforge.
406 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
407 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
409 GRAS: It is not considered as stable anymore, but experimental. Sorry.
410 * It's not quite deprecated for now because we have no replacement,
411 but it may soon become the case.
414 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
415 * Fortran: New user-level cache variable to store the rank of the running
416 process. This improves performance by an order of magnitude.
417 * C: New coccinelle script to automatically locate and modify global and
418 local static variables.
419 * Improved SMPI network model with a sender-side gap to account for multiple
423 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
424 only say if a communication is finished, no matter whether it succeeded or
425 failed. You can call MSG_comm_get_status() to know the status of a finished
427 * New function MSG_task_dsend() to send a task and detach it. When a
428 communication is detached, you are never notified of its success or failure
429 and the memory is released automatically once it is finished. This function
430 is useful when you don't care about the end nor the success of a
432 * Change the prototypes of action replay. Sorry for inconvenience,
433 but this is really more efficient this way (and to adapt your code,
434 you just have to fix the initialization, that shouldn't be too long)
435 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
436 ever managed to do anything useful with it.
437 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
438 takes a dynar of communications. It returns immediately and gives the
439 index of a finished communication (if any).
440 * New example: a basic implementation of the Chord P2P algorithm.
443 * New model for multi-core CPUs. You can now use the core attribute to
444 precise the number of cores of a host. This is a basic model. Every
445 process running on the host receives at most the power provided in
446 the DTD (throughput<=power). Total throughput of process cannot exceed
448 * New peer tag. This peer tag creates a tiny AS comprising a host and a
449 router linked by an up-link and a down-link (possibly asymmetrical).
450 This kind of pattern allows to easily build last-mile model style platforms.
451 Aggregating such patterns in a rule-based AS is thus the technique of
452 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
453 * New model for Vivaldi routing. We transformed the Vivaldi network model
454 into a Vivaldi routing model (based on the rule-based model). This allows to
455 combine Vivaldi based latencies with last-mile platforms.
458 * Added a check for NaN of IEEE754 infinite in the double entries of
460 * Introduce a new context factory "raw", highly inspirated from the
461 ucontext factory, but using manually crafted functions in assembly to
462 do the work in an efficient manner.
463 * Allow to change the used context factory at run time, not only at
464 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
465 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
466 contexts at runtime (only with raw contexts or ucontexts).
467 * Completely rewrote this module to allow parallel execution of user
468 processes. Use --cfg=contexts/nthreads:N to execute user processes
469 with N parallel threads (the default is 1, meaning no parallelism).
470 * Allow to decide dynamically between sequential and parallel modes.
471 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
472 processes in parallel only when their number is greater than or equal to P
474 * Added a check for NaN of IEEE754 infinite in the double entries of
478 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
479 won't output the state of processes when interrupted with Ctrl-C
480 * Add a new function xbt_dynar_to_array that transforms a dynar into a
481 NULL-terminated array. This may solve backward compatibility issues
482 due to the change to return type of SD_simulate. See also:
483 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
484 * Add new macros with variable number of arguments.
485 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
486 - in xbt/asserts.h: xbt_assert
487 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
488 - in xbt/ex.h: THROWF and RETHROWF.
489 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
491 * Change xbt_die() to accept a format string with arguments, just like printf.
492 * New data structure: xbt_lib_t, like a dict but more general and with better
496 * New configuration options
497 Options triva/categorized and triva/uncategorized can be used to generate
498 graph configuration files for Triva visualization tool.
499 * Configuration option tracing/platform is renamed to tracing/categorized
500 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
501 * New TRACE_user_link_variable interface:
502 User provides the name of the link and the tracing variable to attach to it
503 * the declaration of tracing categories must be done after the environment
505 * simpler tracing interface, just one way to declare categories
506 TRACE_category or TRACE_category_with_color, it is up to you
507 * links in the trace file are again identified by their names
508 * trace contains the full platform hierarchy exactly as declared using the ASes
509 * Options tracing/msg/[task|process]:1 groups the process by hosts
510 for both cases, tasks and processes must have names that are unique during the simulation
511 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
512 * The experimental option tracing/msg/volume is deprecated
513 its functionality may be reincorporated if needed
515 The tracing generates a trace file with unordered timestamped events,
516 because of the way the core simulator (surf) works. A script available
517 at the tools directory (fix-paje-trace.sh) can be used to put the events
518 in order. We have changed the tracing so it can generate ordered timestamped
519 events in the final trace, but depending on the simulator (and how much time
520 is simulated) that can lead to a huge memory utilization. It is deactivated
521 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
524 * Define a SIMGRID_VERSION macro in simgrid_config.h.
525 - We are trying hard to keep the API stable, but it may happen that
526 some things change (we're a research project after all, not a
527 nuclear plant operating system). If such things should happen, you
528 could rely on that macro to adapt.
529 - current value: 30600 for 3.06.00, aka 3.6
530 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
531 a number that can be compared with SIMGRID_VERSION.
532 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
533 assertions and verbose/debug logging events are disabled at compile time.
535 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
537 SimGrid (3.5) stable; urgency=medium
540 * New feature to any SimGrid-based simulator: Model-Checking
541 Check SIN#1 for more details.
544 * New Model SMPI (three-interval linear regression for correction factors)
545 See RR-7426, available at http://hal.inria.fr/inria-00527150
546 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
547 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
548 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
549 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
550 * See also src/smpi/README
555 - Tracing API changes: TRACE_start and TRACE_end should not be called
556 by user-code. They are automatically called by simulators created
557 with SimDAG, MSG and SMPI if the toolkit is compiled with
558 tracing_enabled=ON. Categories declaration and utilization remain the
559 same for MSG and SimDag.
560 - A function was added to the tracing API to declare categories with
562 - TRACE_category_with_color (char *category, char *color)
563 where color must be in the following format
564 "%f %f %f", red, green, blue
565 and red, green, blue are float values in the interval [0, 1]
566 - User can specify NULL as color parameter, or continue calling
568 On that case, the tracing system will define random colors
569 - The following command-line options are supported:
570 --cfg=tracing/filename:msg.trace
571 --cfg=tracing:1 (activate tracing, needed to use others)
572 --cfg=tracing/platform:1 (categorized resource use)
573 --cfg=tracing/uncategorized:1 (uncategorized resource use)
574 --cfg=tracing/msg/task:1 (task creation)
575 --cfg=tracing/msg/process:1 (process creation, migration)
576 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
577 --cfg=tracing/smpi:1 (SMPI interface tracing)
578 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
579 - examples of examples/msg/tracing updated
581 - DAXLoader and DOTLoader functions can generate tasks with categories
582 - A new function to attribute a category to SD tasks:
583 TRACE_sd_set_task_category (SD_task_t task, char *category)
584 * Tracing the MPI interface implemented by SMPI
585 - Collective operations are traced with states
586 - Point-to-Point operations are traced with states/links
587 - Tracing activated by a parameter "-trace filename" passed
588 to smpirun during execution (considering that simgrid
589 is compiled with tracing enabled)
590 - To run the simulation with gdb, the simulator
591 accepts --cfg=tracing/smpi:1 to trace SMPI
592 - tesh files to check if smpi tracing is ok
593 - See examples/smpi/NAS/DT-trace
594 * GTNetS tracing re-worked
595 - adaptation to the tracing system of GTNets to cope
596 with modifications regarding the fullduplex mode
597 - new tesh files to check if gtnets tracing is ok
600 * Asynchronous communications through the functions:
601 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
602 * New function: MSG_load_platform_script()
603 to make possible using a lua script instead of XML files to set up platforms
604 * New function: MSG_set_function
605 to associate functions to processes, used when bypassing the parser
606 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
608 Platforms: Add some more examples in examples/platforms
609 * Grid'5000: see www.grid5000.fr
610 * *_30000_hosts.xml: various huge files [mainly scalability testing]
613 * Change the XML format. This is a very important modification. SimGrid
614 3.5 introduces a new hierarchical format based on the notion of
615 Autonomous Systems. Compatibility with old format is ensured
616 through the perl script provided in the install bin directory
617 bin/simgrid_update_xml.
618 It is now possible to build platforms with specific routing
619 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
620 connect several platforms together. We will try to provide soon
621 set of realistic platforms exploiting these properties (have a
622 look at examples/platforms/ for the moment).
623 * Take the opportunity of the XML format change to be a good XML citizen:
624 rename link:ctn to link_ctn and similar changes (also dealt with by
626 * Add a new routing scheme (rule-based) using regular expressions. It
627 enables to have an extremely low memory footprint when the
628 underlying routing is simple and can be compactly described. You
629 need to have libpcre4-dev (perl regular expressions) installed if
630 you want to use this routing scheme.
631 * Revive the cluster TAG and allow to easily and efficiently (both in
632 term of memory and speed) connect clusters together. Have a look
633 at teshsuite/simdag/platforms/ to see how this can be done. With
634 this tag, you can create clusters with thousands of tasks at no
635 cost (have a look at examples/platforms/).
636 Note: clusters are implemented as ASes, so there is no need for an
637 enclosing AS tag if you have only one cluster in your platform.
638 * Add new generic functions in the public interface that allows the user
639 to call SURF 'create_resource' methods from your code (same
640 functionality as the XML bypass mechanism but with a much lighter
642 * Add a new model (enabled through command line --cfg=network/model:SMPI)
643 that uses a piecewise linear approximation to produce better
644 results when exchanging small messages.
645 * Add a new parameter to handle correctly full duplex link and account
646 for interferences between uplink and downlink communications
647 (activate with --cfg=fullduplex:1).
650 * Rename the SD_READY (all dependencies are satisfied and task is
651 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
652 dependencies are satisfied) state.
653 This prevents a confusion between the notion of "ready to schedule"
654 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
655 simulated" (SD_RUNNABLE) used by the simulation kernel.
656 * Change the way a task is considered as ready. Instead of removing
657 dependencies when a task is done, a counter is decreased. This way,
658 it is always possible to reach ancestors thanks to the
659 SD_taks_get_parents function (even after the end of the simulation.)
660 * Change the return type of SD_Simulate from (SD_task_t*) into
661 xbt_dynar_t. This function was in handling a dynar internally and
662 converted it into a NULL terminated array for historical reasons.
663 * New function SD_dotload(char*) to load a DAG described in dot
664 format. This loader and the corresponding examples require the
665 installation of the graphviz library.
666 * Fix a bug in the management of tasks of size 0 in the surf network
667 models. This problem was only visible with SIMDAG and you should
668 thus disregard results produced with earlier versions if you
669 relied on this feature (some tasks were blocked because of this).
670 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
671 even though your applications were doing only point-to-point
672 communications and sequential computations. Now you can really use any
673 model you want (of course, if you create real parallel tasks, which are
674 not implemented in most models beside ptaskL07, this will abort).
675 * Add an example that schedules a DAX on an heterogeneous platform
676 using a Min-Min strategy.
677 * New function SD_workstation_get_current_task() that returns the kind
678 of task currently running on a workstation in the sequential access
680 * Raise some warnings when unexecuted tasks remains at the end of the
681 simulation. This is usually caused by cycles in the DAG.
684 * New function: SIMIX_process_set_function() called by MSG_set_function
685 * Change the underlying waiting queue in semaphores so that a process
686 can wait on several of them simultaneously (as in waitany).
687 * Fix the way to handle tokens in semaphores so that all access patterns
688 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
689 * kill the dirty pimple SIMIX_message_sizes_output()
690 Please use (proper) visualization instead
693 * New data container: setset (set of sets of elements)
694 * New module: mmalloc (mapped malloc, allowing to have several
695 independent segments of malloc)
696 * New function: xbt_dict_cursor_set_data()
697 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
698 * New function: xbt_dynar_is_empty()
699 * New function: xbt_fifo_get_last_item()
700 * Fix xbt_dynar_shrink(): use the right element size.
701 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
702 uninitialized areas during expand.
703 * Fix semaphores: previous implementation was severely broken.
704 * Use library init/fini functions for our initialization.
705 - you can use logs and other feature as soon as you want in your
706 code (even before the xbt_init / MSG_init)
707 - xbt_exit is now a no-op and produce a warning when used.
710 * Port GRAS to new SIMIX mechanisms. This allows gras users to
711 benefit from the latest improvement to the simulation kernel.
712 * Kill measurement sockets for now. If you rely on them, sorry. This
713 release is not for you. This feature will be reintroduced in the
714 future, but we cannot delay the release any further.
715 * New function: gras_msgtype_get_name().
716 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
717 * Fix (at last) the pmm example: it should not randomly fail anymore.
719 Build chain: bug fixes and overall polishing
720 * Cmake is now stable enough. Hence, we killed the autotools.
721 * Port to windows ( TM :)
722 * Fix the 'make install' target.
723 No need to use 'make install-simgrid' anymore
724 * Introduce a 'make dist' target compiling a *source* archive
725 'make package' compiles a binary archive
726 * Compile java files only on need
727 * Add --cd and --setenv command line options to tesh
728 * Out of source builds are not fully supported yet, but we are close
729 * Enable supernovae and optimization flags by default for our users
732 * Add layer to set up environment directly from lua, without XML.
733 * The effect of gras_stub_generator can be achieved through
734 lua too (check examples/gras/console/ping_generator.lua)
736 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
738 SimGrid (3.4.1) stable; urgency=low
740 The "Polishing easter eggs is probably a good idea" release.
741 This is a bug fixes release only.
745 * Fix a bug preventing the tasks from begin garbage collected.
748 * Fix a bug occuring when a host involved in a communication fails.
749 This was not detected properly by the other peer involved in the
750 communication. Now, it's reported as a network error.
753 * Warn the user about loop dependencies in data flow of DAX files
754 * Obey the control-flow dependencies of DAX files
757 * Add option "enable_smpi" allowing to not compile SMPI.
758 Probably useful for the (Mac) users experiencing a build error here
759 * Improve the detection of lua5.1 and ruby1.8
761 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
763 SimGrid (3.4) stable; urgency=low
765 The "Easter in Cargese" release. Also known as (major changes):
767 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
768 ~> bindings were greatly improved
769 ~> new tracing infrastructure for better visualization introduced
771 * the "Welcome to configury modernity" release.
772 ~> we switched from autotools to cmake, and improved our cdash
775 A more detailled list of changes follow (full detail in svn log).
777 Java Bindings: Various Cleanups
778 * (install java-gcj-compat-dev on debian-like to use them)
779 * Remove put/get: no need to export deprecated interface in Java
780 Use send/receive instead.
781 * Cleanup the examples and add a README per directory
782 * Remove example autoDestination (that's the only way to go now)
783 * Remove example explicitDestination (was a plain copy of basic)
784 * Make JniException a runtime exception, so that there is no need to
785 declare the fact that you may encounter such a beast. I guess that
786 nobody will ever want to survive such error.
787 * Create specific errors for each MSG case of failure:
788 host failure, transfer failure, timeout, task cancelled
789 * Cleanup the exceptions that may get thrown by each function
790 * Other internal cleanups in Java bindings. Performance still bad :/
791 Ruby and Lua Bindings: create them
792 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
793 * That's new and great, you should try them out.
794 Same functionalities than Java bindings, only even less polished
796 * Kill the useless "rate" argument of SD_task_get_execution_time()
797 Everyone used to provide -1 as a value, it was not used, and the
798 semantic of a possible use wasn't even clear.
799 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
800 either as comm costs or compute costs to mean that there is no
801 such thing for that specific task.
802 * Add a SD_task_set_name() function
803 * Fix SD_task_unschedule() on typed tasks
804 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
805 * In DAX loader, accept useless 'level' attributes to <job> since
806 LIGO DAGs have them (seem to be to ease graphical representation).
808 * Add an example masterslave_mailbox.c using send/receive and not
809 the deprecated put/get interface.
810 * Kill the MSG_paje_output() function. It's a noop since 2 years.
811 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
813 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
814 (declare MSG_USE_DEPRECATED to still have the old name)
815 * Add a MSG_task_set_data() function
816 * About trace replay (see examples/msg/actions):
818 - Allow to work with splitted trace files for each process
819 Give the specific trace file as argument of each process,
820 and call MSG_action_trace_run(NULL)
821 You can still have one merged file for all processes.
822 - Fix implementation of collective operations
823 * Allow task_execute() on 0-sized tasks (closes #10063)
825 * This is the first release of SimGrid where SMPI is not considered
826 beta anymore (even if some corners should still be improved)
827 * Port over the new SIMIX_network submodule (internal refactoring)
828 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
829 * Implement more missing elements of the standard:
831 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
833 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
834 MPI_Scan() MPI_Get_processor_name()
835 - Added implementation of missing case for Alltoall (warning: it's
836 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
837 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
838 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
839 SMPI_MPI_Allgatherv()
841 - MPI_Waitsome() was broken
842 - Allow relative includes in smpicc
843 - Command line cfg argument 'reference_speed' was ignored...
844 - Some functions did not properly lead to auto-benching of user code
845 - smpicc passes -O2 by default (just like openmpi one)
847 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
848 * Bug fixes about timeouts during communications
849 * add SIMIX_message_sizes_output() as a pimple to write to file the
850 amount of messages per size. Use gnuplot to get histogram.
851 Pimple because that's the only user-visible function of simix,
852 defined directly in xbt.h (irk, sorry)
854 - Add a SIMIX_sem_get_capacity() function
855 - Fix interactions with processe resume/suspende
856 - release_forever() was stupidly broken
857 - Fix SIMIX_display_process_status() for processes in a semaphore
858 - Make SIMIX_sem_block_onto() user-visible
859 * Refactoring context stuff:
860 - Use pseudo-OOP for better modularity
861 - reimplement SIMIX_process_kill() without process_schedule() so
862 that the latter can take as invariant that it is called from
864 - Merge context_start into context_new for sake of simplicity
866 * Add a Vivaldi network model, coded live during SUD'10 ;)
867 * Rename configuration variables to start a hierarchy:
868 o cpu_model -> cpu/model
869 o network_model -> network/model
870 o workstation_model -> workstation/model
871 * New configuration variables:
872 o network/bandwidth_factor: correction to bandwith
873 o network/latency_factor: correction to latency
874 o netwotk/weight_S: correction to the weight of competing streams
875 * Add a long description to the models, that users can see with such
876 argument on the command line: --cfg=cpu/model:help
877 * --help-models display the long description of all known models
879 * config: add the ability to set a default value after registration
880 Does not override any previously set value (e.g. from cmd line)
881 * dict: allow to have integer key and data.
882 When so, you need to use the following functions
883 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
884 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
885 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
886 In contrary to regular dicts, the key is not malloced before copy.
887 Mixing scalar and regular elements in the same dict is not tested
889 * Allow to use xbt_dynar_shrink() to expend the dynar instead
890 Tracing for Visualization:
891 * SimGrid is now instrumented in order to generate a trace file for
892 visualization analysis: to use it, need to compile SimGrid with the
893 "tracing" option enabled, and instrument the program using SimGrid with
894 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
895 (among other functions).
896 * The instrumentation only traces the platform utilization for now
897 * Documentation to use the tracing functions and how to analyze the
898 traces with the Triva tool is written.
899 * More information about: SimGrid FAQ (in the section Tracing Simulations
902 * We moved to cmake as default build system. Autotools support will
903 be dropped soon. Check the FAQ for more info about how to use it.
904 * Greatly improved our cdash/ctest interactions
905 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
906 * Added memory checking tests with valgrind; lot of memleak fixing.
907 This may be the first release of simgrid with so few memory issues
908 * Added code coverage tests.
909 Our coverage is still improvable, but at least we see it on cdash.
911 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
913 SimGrid (3.3.4) stable; urgency=low
915 The "Desktop Grid needs love too" release (also called Xmas release).
918 * Major speedup in the maxmin system solving by using lazy evaluation
919 Instead of solving completely the maxmin system at each iteration,
920 only invalidate (and recompute) the modified parts.
921 This new feature is enabled in default models but you can try to
922 turn it on with "--cfg:maxmin-selective-update=1" for other models.
923 * Cas01 IMproved as default CPU model
924 This CPU model is the same Cas01 model, but it uses the
925 maxmin-selective-update flag and a heap structure to manage
926 actions on SURF kernel.
927 It reduces the complexity to find the next action to finish and,
928 consequently, it's faster than the old Cas01.
929 This is the new default CPU model (Cas01).
930 * Rename the old Cas01 model to Cas01_fullupdate
931 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
932 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
933 * CpuTI (CPU Trace Integration)
934 A new CPU model whose objective is simulate faster when using
935 availability trace files.
936 Instead of using a full featured, over engineered maxmin system for
937 CPU modeling, this model does the pre-integration of traces files
938 to calculate the amount of CPU power available, and so, executes
939 faster than the old CPU models.
940 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
941 * Use LV08 as default network model since it gives better accuracy
942 for small messages and shouldn't change things for big ones.
943 Use --cfg=network_model:CM02 to get the previous behavior.
946 ******************************************
947 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
948 ******************************************
949 * The new CPU model may changes simulations!
950 The point is that events occurring at the exact same timestamp
951 are not scheduled in the same order with the old and new
952 version. This may be enough to completely change the execution
953 of simulations in some cases.
954 * The new network model will change simulations!
955 This new model is more realistic than the previous one, so you
956 should consider redoing your old experiments with this model.
957 Sorry for the inconvenience.
960 * Introduce the supernovae compilation mode
961 When compiled that way, the whole SimGrid (or almost) is put in a
962 single compilation unit and compiled in one shoot.
963 This is to help gcc which has difficulties to inline stuff from one
965 The speedup seem to be above 15%, althrough more tests are needed on
966 amd64 to confirm that gain.
969 * Port of MSG's mailbox on top of SIMIX network
970 The put/get mechanism was greatly simplified on the way.
973 * New SIMIX network module. Provides:
974 - Mailbox: rendez-vous mecanism to find with who you want to speak
975 - Synchronous send/recv: easier and hopefully faster since the
976 logic is handled in the maestro process directly now
977 - Asynchronous send/recv: you dreamt of it? It's here now
978 Too bad that nobody cared enough to propagate the change to MSG.
979 * Add semaphores as SIMIX synchronization mechanism.
982 * new function SD_daxload(char*) to load a DAX file
983 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
984 * Introduce typed tasks. Specify its kind and cost at creation.
985 At scheduling, just give where it should be placed, and the cost
986 for each involved resource is automatically computed.
987 Existing constructors so far (more to come of course):
988 - SD_task_create_comm_e2e() for end-to-end communication
989 - SD_task_create_comp_seq() for sequential computation
990 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
991 * new function SD_task_dump() for debuging display
992 * new function SD_task_dotty(task,FILE*) writing to file the info
993 about the task in dotty format
994 * SD_task_dependency_exists() can now cope with having one of its
995 arguments NULL. If so, it tests whether the other argument has any
997 * Add getters on list of preceding/following tasks:
998 SD_task_get_parents(task) and SD_task_get_children(task)
999 * Add getters on amount of workstations and list:
1000 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
1001 * Add getter on task kind: SD_task_get_kind(task)
1002 * Update the start_time and finish_time of tasks on completion/failure
1003 * Bugfix: Remove task from state swags when destroyed
1006 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
1009 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
1010 dynar with one separate thread per value of the dynar.
1011 * Change the prototype of xbt_thread_create(), sorry.
1012 Added a boolean parameter indicating whether we want to join this
1013 thread (used in SG only for now)
1014 * Implement xbt_thread_join and xbt_thread_yield in SG also.
1017 * GTNetS wrappers should now be usable again (and betterly tested too)
1018 * Fix a major regression from 3.2 where the timeout provided to
1019 MSG_task_put_with_timeout() was used as absolute time before which
1020 the comm should be done.
1021 * Start to fix the <cluster> tag.
1022 - Internal links should be good now (beside of the loopback, which
1023 use the private link instead)
1024 - paths to the external world is still rather broken
1025 - the <route:multi> tag is just broken. Actually that's brain-dead.
1026 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
1027 to make it less stupid
1028 ** Check your platform with teshsuite/simdag/platforms/flatifier **
1029 * Fix a source-level compatibility glitch from 3.2: after defining
1030 MSG_USE_DEPRECATED, you can use the old name
1031 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
1032 * Allow to compile from the SVN with automake 1.11
1033 * Fix some problems when using the "start_time" tag in deployment XMLs.
1034 * Fix #8569: XBT/synchro.h has redundant declarations
1035 * Fix #8563: MSG return values and exceptions
1036 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
1037 * Integrate patch #8636: Obey DESTDIR when installing documentation.
1038 Thanks to Robson Peixoto.
1039 * Fix a vicious bug in dictionaries inducing that some elements were
1040 not freed on xbt_dict_free()
1042 Portability report of this version:
1043 * Main portability targets:
1044 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
1045 on (amd64/i386/ia64)
1046 - mac leopard on i386
1047 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
1048 but nothing critical.
1049 * Other platforms: windows, AIX and others were not tested for this release
1051 Timing report of this version:
1052 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
1053 scenario parameters). From 8h to a few seconds in desktop grid settings.
1054 * Supernovae brings about 25% speedup on i386.
1056 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
1058 SimGrid (3.3.3) stable; urgency=low
1060 The "Need for Speed" release.
1062 The timings done to validate the 3.3.2 were faulty.
1063 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
1065 The problem was a conversion from a manually handled vector to
1066 xbt_dynar_t on the critical path.
1067 xbt_dynar_foreach calls functions, inducing stack management crap.
1069 We inlined these functions and xbt_dynar_foreach is now breath taking.
1070 We also inlined xbt_swag_belong on the way.
1072 Here are some approximate speedup measurements (on master/slaves
1073 simulations lasting between 10s and 20s each):
1074 3.3.1 -> 3.3.2: about same performance
1075 3.3.2 -> 3.3.3: 40% speedup
1076 3.3.1 -> 3.3.3: 40% speedup
1077 3.3.1 with inline patch -> 3.3.3: 30% speedup
1079 Our reading is that the refactoring which occurred in 3.3.2 made us
1080 suffer much more from the xbt_dynar_foreach low performance, but
1081 once we solved this, this refactoring proved to be very performance
1082 effective. From the 40% speedup, somehow, 10% are due to the
1083 inlining and 30% to the refactoring.
1085 That's a pitty that gcc cannot inline functions placed in other files
1086 alone. We have to choose between:
1087 - break the encapsulation (by putting private data structures and
1088 accessors in headers files to help gcc)
1089 - live with low performance
1090 - switch to a decent compiler such as icc (not quite possible).
1092 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
1094 SimGrid (3.3.2) stable; urgency=low
1096 The "Simplicity does not preceed complexity, but follows it" release.
1098 The main contributors of this release were (lexical order):
1099 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
1102 * Extract the routing logic into its own object.
1103 (was dupplicated in network.c and workstation_LV07.c;
1104 Allows to implement other ways of storing that info)
1105 => kill now useless network_card concept
1106 - Use dynar to represent routes (instead of void** + int*)
1107 - kill link_set (use surf_network_model->resource_set instead)
1108 - Add a command-line option to choose the routing schema to use
1109 - Add three new models:
1110 * Floyd (shortest path computed at initialization)
1111 * Dijikstra (shortest path recomputed all the time)
1112 * Cached Dijikstra (shortest path computed on need)
1113 All these models where contributed by Silas De Munck, and are
1114 described in his ICCS09 paper.
1116 * Simplify model declaration
1117 (less redirections, less function to write when defining a model)
1118 - Factorize stuff between models:
1121 surf_model_resource_set(model)
1122 surf_model_resource_by_name(model, name)
1123 - Unify the types of models in s_surf_model_t (using an union)
1124 - Embeed fields of common_public directly into s_surf_model_t
1125 - Rename model methods:
1126 action_free ~> action_unref
1127 action_change_state ~> action_state_set
1128 action_get_state ~> action_state_get
1129 - Change model methods into functions :
1130 (model)->common_public->action_use ~> surf_action_ref
1132 * Implement a generic resource; use it as ancestor to specific ones
1133 (allows to kill duplicated code in models)
1134 Drawback: timer command don't need no name nor properties;
1135 workstation_CLM03 don't need no properties
1136 (but I guess we can live with those few bytes wasted)
1138 * Improve the action object model
1139 - implement a constructor avoiding dupplicated code about field
1140 initialization in generic_action part.
1142 * Kill the SDP model: it has an external dependency, is deprecated
1143 in flavor of modern lmm models, and didn't compile since a while
1146 * Relocation of the context module from XBT to SIMIX.
1147 (the context were decoupled from the simix processes, duplicating a lot of code)
1148 => a lot of code was factorized
1149 - less overhead is introduced during scheduling
1150 - simpler API for the context factory
1151 - the logic for process creation,destruction and manipulation was simplified
1152 * Simplification of the s_smx_process_t data structure.
1153 => accesing the simix level data associated to a process is faster now,
1154 and the code is a lot more readable.
1157 * Implement some more MPI primitives:
1158 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
1159 -implementation: Bcast: flat or 2-ary tree (default),
1160 Barrier: 4-ary tree,
1162 Allreduce: Reduce then Bcast
1163 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
1164 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
1165 Alltoallv: flat tree, like ompi
1167 * Add support for optimized collectives (Bcast is now binomial by default)
1168 * Port smpirun and smpicc to OS X
1171 * Kill SD_link_get_properties: hard to maintain and makes very little sense
1172 Shout out if you used it.
1175 * Display the list of still queued messages in SG mode when existing
1179 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
1180 * Add xbt_graph_node_get_outedges() [Silas De Munck]
1181 * Add xbt_str_from_file(FILE*)
1182 * Add xbt_dict_get_key achieving a linear reverse search
1183 * Remove the context module
1185 Portability report of this version:
1186 * Main portability targets:
1187 - Linux(debian)/x86/context
1188 - Linux(debian)/x86/pthreads
1189 - Linux(debian)/amd64/context
1190 - Linux(debian)/amd64/pthreads
1191 On these, we still have the eratic breakages of gras/pmm and
1192 amok/saturate_sg reported in previous version. We still think
1193 that the tests are the cause of the fault, not the tested code.
1195 - Mac OSX Leopard/x86/context
1196 Still false negative in tesh autotesting.
1197 Smpi still fails, but this time because readlink does not accept -f
1198 Everything seems to work properly beside of that.
1201 - AIX version 5.3 (only tested contexts this time)
1202 Smpi still fails there because mktemp is not installed.
1203 Everything seems to work properly beside of that.
1205 I managed to compile it for the first time, but several breakages.
1206 Won't delay the release for this exotic platform.
1208 * Windows: it's still lagging behind. If you want to help, please
1211 Timing report of this version:
1212 This version seem to be more than 5% faster than 3.3.1 (on linux
1213 64bits with contextes). The gain is less than expected, we are
1214 investigating this for next release.
1216 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
1218 SimGrid (3.3.1) stable; urgency=low
1221 * Implement a --cfg-help to show existing configuration variables
1222 * Build chain do not require doxygen in maintainer mode
1225 * fix a bug on struct sizeof computation, which prevented the
1226 exchange of arrays of structs in some conditions
1227 - added a regression test about this in datadesc_usage
1228 * Allow the exchange of 0-long dynamic vectors.
1229 - for that, use -1 as indicator of dynamic size instead of 0
1230 - This implied to change any size from unsigned long to long,
1231 reducing a bit communication abilities, but I guess that with
1232 64bits being quite common, this is more than enough.
1233 - This also induce a protocol change, thus bumping network protocol
1234 version from 0 to 1 (if we have external users, we have to get
1235 clean on that point too ;)
1236 - added two regression tests about this in datadesc_usage
1237 * Be more verbose when propagating local exceptions
1238 This helps debugging.
1239 * Display the status of simulated processes when receiving SIGINT in
1243 * Allow to control the simulation from a trace file.
1244 New functions MSG_action_register() and MSG_action_trace_run()
1245 The first one allows to associate a function execution to each
1246 kind of action while the second one parses a trace file and
1247 triggers the corresponding actions within the system.
1248 For now, only a toy example is provided in examples/msg/actions
1249 * Add an exemple of process migration in examples/msg/migration
1250 * Fix a bug in task exchange which broke MSG_task_get_sender()
1251 Add a teshsuite regression test for that.
1252 [Bug: if MSG_task_get_sender() is called after sender exit,
1254 * Fix a bug which prevented suspend/resume to work properly
1255 * Display the status of simulated processes when receiving SIGINT
1256 This fixes a regression of v3.3. due to the introduction of SIMIX
1257 * Bug fixing in failure management:
1258 - trace could not start by a failure at time 0
1259 - failure during communications were not working
1262 * Add SIMIX_process_set_name() to change the name of the current
1263 process in the log messages.
1264 * Store smx_hosts in a dict since we only retrieve them by name
1265 * Move the configuration infrastructure to surf
1268 * Move the configuration infrastructure to surf
1271 * Massive internal cleanups:
1272 - Store internal structures on processes instead of hosts (allows
1273 to have more than one process per host, in addition of being more
1275 - Cleanup the initialization/finalization process
1276 - Kill a whole bunch of unneeded synchronization:
1277 processes run in exclusive manner within the simulator
1278 - Move queues from global tables to process data fields
1280 - now accept -platform and -hostfile arguments
1281 - Pass the right rank value to processes according to the hostfile
1282 * Compile the examples by default, and use them as regression tests
1283 * Implement MPI_Wtime()
1284 * Change the reference speed to a command line option
1287 * TCP_gamma can now be specified as command line option using
1288 --cfg=TCP_gamma:10000000.0
1289 * Change the --surf-path cmd line option into --cfg=path:
1292 * Also include strbuff from xbt.h public header
1293 * xbt_ex_display(): do not free the exception after displaying
1294 This allows to do more with the given exception afterward.
1295 Users should call xbt_ex_free() themselves.
1299 Portability report of this version:
1300 * Main portability targets:
1301 - Linux(debian)/x86/context
1302 - Linux(debian)/x86/pthreads
1303 - Linux(debian)/amd64/context
1304 - Linux(debian)/amd64/pthreads
1305 These targets fail about 1/10 of times on gras/pmm, but we believe
1306 that this is because of the test, not because of simgrid.
1307 amok/saturate_sg fails even more rarely, and the test may not be
1310 - Mac OSX Leopard/x86/context
1311 The test suite still spits tons of errors because some obscure
1312 force prevents us from removing the temporary directories
1313 arguing that they still contain some metadata I've never heard of.
1314 Smpi fails because seq is not installed.
1315 Everything seems to work properly beside of that.
1318 - AIX version 5.3 (both contexts and pthread)
1319 Smpi still fails there because mktemp is not installed.
1320 XML inclusions seems rosty on AIX.
1322 * Windows: it's still lagging behind. If you want to help, please
1325 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
1327 SimGrid (3.3) stable; urgency=high
1331 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
1332 [Malek Cherier & Mt]
1334 * Introduce the SIMIX module: factorize code between MSG and GRAS.
1337 Until now, GRAS were using MSG as an interface to SURF. It was
1338 quite difficult because both interface have several differences
1339 (MSG channels vs GRAS sockets were the most notable point).
1341 This also opens the gate to SMPI (which should occur soon) and speed
1342 up simulations by to 40% (even if it were not the main goal).
1344 **************************************
1345 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
1346 **************************************
1347 The point is that events occuring at the exact same timestamp are
1348 not scheduled in the same order with the old and new version. This
1349 may be enough to completely change the execution of simulations in
1350 some cases. Sorry for the inconvenience.
1352 * Cleanup and upgrade the XML format to push further scalability
1353 issues (check http://hal.inria.fr/inria-00256883/ for more info)
1355 * Improve the testing infrastructure with tesh. Now a very large part of
1356 the code is tested not only by being run but also by checking that the
1357 output match an expected output [Mt].
1359 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
1360 is really less memory-demanding, which should allow you to use
1361 larger files in SimGrid [AL].
1363 * Inform valgrind about our contextes, so that it becomes usable
1364 with the default (and more effecient) version of SimGrid
1365 [contributed by Sékou Diakite, many thanks]
1368 * Introduce a listener thread in charge of receiving incoming
1369 messages from the network. It allows to overlap communication and
1370 computation but most notably, it removes some stupid deadlocks due
1371 to the fact that so far, a process could not send and receive at
1372 the same time. This made most non trivial communication schema
1374 * Convert the PIDs from long int to int to match the MSG ones (and
1375 linux ones too) [Mt]
1376 * New function: gras_agent_spawn() to launch a new process on
1377 current host. Only working in simulation for now. [Mt]
1378 * New function: gras_os_hostport() returning a constant form (ie,
1379 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
1382 * Make the backtrace of exceptions more human readable [Mt]
1383 * New module: xbt/str [Mt]
1384 a ton of string utility functions (split, join, printf to a newly
1385 allocated buffer, trim, etc)
1386 * New module: xbt/hash [Mt]
1387 SHA1 hashing algorithm (more to come if needed)
1388 * New module: xbt/synchro [Mt]
1389 synchronization tools (mutex and conditions) working the same way
1390 in simulation and in real life (mainly useful for GRAS, but not
1392 * New module: xbt/queue [Mt]
1393 classical producer/consumer synchronization scheme
1394 * xbt_dynar_new_sync() creates a synchronized dynar. All access
1395 (using the classical functions will get serialized) [Mt]
1396 * Make dictionary internal table dynamic. No need to specify its size
1397 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
1399 * Make sure the log channels are organized as a tree under windows
1400 (because of ANSI C compatibility issue, any channel were child of
1401 root directly) [Mt].
1404 * Cleaned many thing in surf and fixed a few bugs [AL].
1405 * Add a nice command line configuration mechanism to compose models [AL].
1406 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
1407 the previous one (KCCFLN05). It relies on something that looks like
1408 a max-min sharing mechanism but cannot be written as such. A new solver
1409 was thus designed [AL].
1410 * Add a new solver to lmm. Based on Lagrange optimization and
1411 gradient-based descent, it enables to efficiently maximise systems s.a
1413 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
1415 This solver enables to propose two new network models for TCP Reno and
1416 TCP Vegas based on Low's work. These models still need to be fully
1417 tested though [Pedro Velho].
1420 * Bug fix in SD_simulate. Now the time bound given as argument is
1422 * Use the new parallel task model (ptask_L07) as default.
1423 * Use the SURF command line configuration mechanism.
1424 * 0-size tasks (for synchronization) should now work.
1426 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
1428 SimGrid (3.2) stable; urgency=high
1432 We still experience issues on this platform, but we believe that at
1433 least MSG is usable.
1435 GRAS API BREAKAGE (for simplification purpose, sorry):
1436 * the gras_msgtype_by_name is not used anymore. Instead of
1437 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
1438 you can write (and must)
1439 gras_msg_send(toserver, "request", &request);
1440 - If you still want to pass a gras_msgtype_t to the function (to cache
1441 the type and avoid the lookup time), use the gras_msg_send_() variant.
1442 - Impacted functions:
1443 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
1444 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
1445 * The callbacks are now expected to return 0 when everything went well
1446 (just like the main() function)
1448 GRAS new features and improvements:
1449 * New module mecanism where user code can use per process globals [Mt]
1450 This is similar to gras_userdata_*() functions, but for libraries. It
1451 factorize some code developped over and over in the examples and AMOK.
1452 It has still to be documented and used (only amok/peermanagement is
1454 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
1455 loss when they were small enough to fit into the buffer and sent quickly
1456 enough so that they can all get received in one shoot.
1457 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
1458 if not found. Use the *_or_null() variant for the old semantic.
1459 * In gras_msg_handle, do not discard messages without callback.
1460 They are probably messages to be explicitly awaited later (ie, proofs of
1461 mis-synchronization in userland since they are sent before being awaited)
1462 No big deal usually.
1463 * gras_socket_meas_send/recv: semantic changed!
1464 The numerical arguments used to be (1) the total amount of data to send
1465 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
1466 messages. This was need for the fool willing to send more than MAXINT
1467 bytes on quite fat pipes.
1470 * Do really rename the hostmanagement module to peermanagement. [Mt]
1471 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
1472 but this is rather new and this was documented in the module
1473 documentation (poor excuses, I admit)
1474 * Bandwidth measurement semantic changed! This follows the changes to
1475 gras_socket_meas_send/recv explained above.
1478 * A sequential mode has been added to the workstations. When a workstation
1479 is in sequential mode, it can execute only one task, and the other tasks
1480 are waiting in a FIFO. [Christophe Thiery]
1483 * The KCCFLN05 workstation model now handles parallel tasks. It is the
1484 model for SIMDAG. [Christophe Thiery]
1485 * Bug fix in the maxmin solver: Some values were close to 0 instead of
1486 equal to 0, which caused some bad behaviors in
1487 saturated_constraint_set_update. I now use a threshold mechanism like in
1491 * When running manually src/testall, you select specific units [Mt]
1492 testall is the result of our cunit mecanism, and should replace all
1493 the scripty thingy around since bash don't run easily on billware.
1495 * A mallocator system has been added. [Christophe Thiery]
1496 Mallocators allow you to recycle your unused objects instead of freeing them
1497 and allocating new ones.
1499 Documentation update:
1500 * FAQ reworking + New FAQs:
1501 - "Valgrind spits tons of errors!" [Mt]
1502 - "How to repport bugs" [Mt]
1503 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
1504 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
1505 - Communication time measurement within MSG [AL]
1506 - I experience weird communication times when I change the latency [AL]
1507 * GRAS tutorial [Mt]
1509 - an introduction to the framework and to the used communication model
1510 - an initiatic tour introducing the most proheminent features:
1512 . Lesson 0: Installing GRAS
1513 . Lesson 1: Setting up your own project
1514 o Part 2: Message passing
1515 . Lesson 2: Exchanging simple messages
1516 . Lesson 3: Passing arguments to the processes (in SG)
1517 . Lesson 4: Attaching callbacks to messages
1518 . Lesson 5: Using globals in processes
1519 . Lesson 6: Logging informations properly
1520 . Lesson 7: Using internal timers
1521 . Lesson 8: Handling errors through exceptions
1522 . Lesson 9: Exchanging simple data
1523 . Lesson 10: Remote Procedure Calling (RPC)
1524 . Lesson 11: Explicitely waiting for messages
1525 . Recapping of message passing features in GRAS
1526 - A HOWTO section containing:
1527 o HOWTO design a GRAS application
1528 More are due, of course. They will come latter. In the meanwhile, you can
1529 check the examples which are still here.
1531 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
1533 SimGrid (3.1) stable; urgency=high
1537 There was a stack corruption somewhere, visible only when optimizing
1538 with these versions. [Vince]
1541 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
1542 module that enabled to play with Directed Acyclic Graphs. It is built
1543 directly on top of SURF and provides an API rather close to the old
1544 SG. Some old codes using SG are currently under rewrite to check that
1545 all needful functions are provided. [Christophe Thiery]
1548 * Complete rewrite of the KCCFLN05 workstation model. It is now an
1549 extension of the classical CLM03 model that gracefully handles
1550 failures. This is now the default model for MSG and GRAS. It doesn't
1551 handle parallel tasks yet though. [AL]
1552 * Bug fix: Weights were not correctly set in the network part.
1553 WARNING: This may have resulted in incorrect results with simulations
1554 where there are more than one flow on a given link. [AL]
1557 * After a (long ?) discussion on simgrid-devel, we have decided that the
1558 convention we had on units was stupid. That is why it has been decided
1559 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
1560 WARNING : This means that all previous platform files will not work as
1561 such with this version! A warning is issued to ask users to update
1563 A conversion script can be found in the contrib module of the CVS, under
1564 the name contrib/platform_generation/surfxml_update.pl [MQ]
1567 * Bug fix: Processes were started in reverse order, wrt deployment file.
1568 WARNING: if your code relies on this bug, please fix it. [AL]
1569 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
1570 being executed on two different locations. [AL]
1571 * Bug fix: Failures are now better supported thanks to Derrick's tests
1572 (there was many failure situations I hadn't thought of and that weren't
1573 correctly handled). [AL]
1574 * New function: MSG_host_is_avail indicates you whether a given m_host_t
1578 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
1579 Exception occurring on server-side are propagated back to client (!).
1581 API CHANGE: the callback changed their prototype. Change:
1582 int my_handler(gras_socket_t expeditor, void *payload_data) {
1584 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
1585 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
1587 * New! function: gras_msg_handleall to deal with all messages arriving
1588 within a given period.
1589 * New! function: gras_socket_server_range to get a server socket in a
1590 range of port numbers (ease to avoid port number conflicts) [MQ]
1591 * New! gras processes display their backtrace when they get a SIGUSR1
1592 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
1593 Sweet to debug RL processes [MQ]
1597 - Do not force experiment sizes to be expressed in kb, or it becomes
1598 impossible to measure the latency this way (needs one byte-long tests)
1599 WARNING: this changes the amok_bw_* function semantic. [MQ]
1600 - Implements the link saturation stuff. [MQ]
1601 * Peer management module:
1602 New! module factorizing code that we wrote over and over [MQ].
1605 * New module: cunit (my jUnit implementation in ansi C) [MQ]
1606 - Test units are placed directly into the library code, they get extracted
1607 automatically and placed into the src/testall binary.
1608 - Convert most of the XBT tests to this system.
1609 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
1610 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
1611 live in the same C code. This required to change a little bit the API
1612 of surfxml parsing but shouldn't be an issue for end-users. [AL]
1613 * New module: sparse graph structure with basic algorithms (this is work
1614 in progress and the API is not considered to be frozen yet). [AL]
1615 * Display more information on backtraces: source line & function names are
1616 now displayed just like valgrind does (rely on addr2line tool) [MQ]
1617 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
1618 * Reworked a little bit some #include statements to load only required
1619 headers. Some user code that relied on SimGrid to include stdlib or
1620 stdio may need to include it by themselves. [AL]
1621 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
1623 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
1624 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
1625 but I guess that almost nobody used those parts. [MQ]
1627 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
1629 SimGrid (3.0.1) stable; urgency=low
1632 * Unfortunately, I had missed 5 misnamed functions:
1633 xbt_fifo_item_t xbt_fifo_newitem(void);
1634 void xbt_fifo_freeitem(xbt_fifo_item_t);
1635 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
1636 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
1637 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
1638 They're now deprecated. Please use their new versions:
1639 xbt_fifo_item_t xbt_fifo_new_item(void);
1640 void xbt_fifo_free_item(xbt_fifo_item_t);
1641 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
1642 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
1643 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
1645 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
1646 * Documentation: xbt_log module unmercifully reworked [MQ]
1647 * Bugfix: there was a problem with the ending of contexts with
1648 the pthread backend. It caused some weird deadlock or behavior
1649 depending on the pthread implementation. [AL]
1650 * Bugfix: get the exceptions raised in the simulator repport where
1651 and why they come from when they are not catched in time [AL, MQ]
1654 * Bugfix: Do repport the error when two non-connected hosts try to
1655 exchange data (Thanks to Flavien for stumbling into this one) [AL]
1658 * Add additionnal checkings on communications. Assert that two
1659 communicating hosts are connected by a set of links... [AL]
1662 * Add additionnal checkings on channel values in communication [AL]
1663 * New: MSG_task_get_source to see on which host a task was generated [HC]
1664 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
1665 the number of tasks waiting to be received on channel and sent
1667 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
1668 waits for the first task coming from a given host.. [AL]
1670 GRAS new functionnalities: [MQ]
1671 * Enhance the parsing macro to allow the size of multidimentional objects
1672 to be given thru annotations.
1673 * New example (and documentation): Matrix Multiplication a la RPC
1674 (as when I was young!) and fix a bunch of bugs found on the way.
1676 GRAS performance improvements: [MQ]
1678 * Reduce the amount of cbps creation/destruction by making it static to
1679 datadesc_send/recv() and using a (newly created) cbps_reset (based on
1682 * Change libdata to a set so that we can search for stuff by ID (and thus
1683 reduce the insane amount of dict lookups)
1686 * Actually implement gras_datadesc_copy() so that we don't have to mimick
1687 RL communication on top of SG since it's so uneffective.
1688 It may also be used for inter-thread communication in RL, one day.
1689 * Use gras_datadesc_copy() to exchange messages on top of SG
1691 - improve message exchange performance on top of SG
1692 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
1693 * Don't exchange on the network the size of the used part of buffer,
1694 instead, specify the possible buffer size to read().
1696 - reduces the amount of read/write calls (one pair per exchange)
1697 - reduces the amount of exchanged data (the size)
1698 - allows to retrieve all arrived data on receiver side, if we don't need
1699 it right now (subsequent read will peek the buffer)
1700 - allows the receiver to proceed with the begining of the stream before
1701 everything is arrived
1702 - make it possible to build an iov transport (using readv/writev)
1704 - take care of the data with non-stable storage (like stacked data),
1706 * If possible, TCP send uses vector I/O (when writev() is here)
1707 - Don't use it for receive since we send data sizes and data on the
1708 same stream, so we wouldn't be able to chain large amount of chunks
1709 before having to flush the stuff to read the size.
1710 * Rework the transport plugin mecanism to simplify it and reduce the
1711 amount of pointer dereferencement when searching for the right function
1714 * I guess that now, we do almost as few system calls as possible while
1715 doing as few data copy as possible.
1717 To improve it further, we could try to send all the sizes first and then
1718 all the data (to use iov on receiving size), but it's only a partial
1719 solution: when you have 2 dimensional data, the sizes of the second
1720 dimension is data of the first dimension, so you need 3 streams.
1722 I'm not sure the potential performance gains justify the coding burden.
1724 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
1726 SimGrid (3.00) stable; urgency=high
1729 * New! Give the possibility to hijack the surf parser and thus bypass
1730 MSG_create_environment and MSG_launch_application. Have a look at
1731 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
1733 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
1735 SimGrid (2.96) unstable; urgency=low
1740 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
1741 This deprecates the xbt_error_t mecanisms.
1742 It modifies (simplifies) all XBT and GRAS API.
1743 MSG API keeps unchanged (exceptions raised by XBT are catched from
1744 within MSG and masked with existing error handling facilities)
1747 * New! Add a FATPIPE model. [AL]
1748 * New! Add a parallel task model. [AL]
1749 * New! Add automatically a loopback interface (in the default
1750 network model) if none was precised.
1753 * Bugfix: MSG_process_resume now works with the current running process.
1755 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
1756 * Modification of MSG_task_get_compute_duration. Once a task has been
1757 processed, the value returned by this function is now equal to 0. [AL]
1758 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
1759 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
1760 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
1761 of a m_task. For now, MSG_task_cancel only works with computation
1763 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
1764 of the processor (in Mflop/s) regardless of the current load on the
1766 * API Change: use proper naming convention for MSG_getClock and
1767 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
1769 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
1770 This function changes the priority of a computation task. This priority
1771 doesn't affect the transfer rate. A priority of 2 will make a task
1772 receive two times more cpu power than the other ones. This function
1773 has been added to suit the needs of Nguyen The Loc and hasn't been that
1774 much tested yet. So if it fails, please report it and send me your code.
1776 * API Change: removed all functions and types that were marked "deprecated"
1777 since many months. Renamed MSG_global_init_args to MSG_global_init.
1779 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
1781 SimGrid (2.95) unstable; urgency=low
1784 * Steal some nice code to GNU pth to fix context detection and usage [AL]
1785 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
1786 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
1789 * Bugfix: Allow absolute paths for platform description files [MQ]
1790 * Bugfix: do free the variables after use. Leads to drastic performance
1792 * Implement max_duration (ie, timeouts) on resources [AL]
1795 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
1797 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
1798 the needed support (timeouts) [AL]
1801 * Implement measurement sockets. You can now get the bandwidth between two
1802 hosts thanks to AMOK (see below). [MQ]
1803 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
1804 dynar over the network (yeah) [MQ]
1805 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
1806 * simple/static token-ring example. [Alexandre Colucci and MQ]
1807 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
1808 in place before [MQ]
1811 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
1812 type parsing. "short" and "long" modifiers were also ignored; other
1813 modifier (such as reference level) are still ignored. [MQ]
1814 * Embeed the buffer size within the buffer itself on SG. [MQ]
1815 That way, send() are atomic and cannot get intermixed anymore (at least
1816 the ones which are less than 100k; bigger messages still have the issue)
1817 * Array size pushed by the field, not by the field type (or each
1818 and every long int will push stuff to the cbps) [MQ]
1819 * use select() to sleep since it allows to portably sleep less than one
1822 GRAS (minor cleanups)
1823 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
1826 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
1827 * type category 'ignored' killed as it was never used and were difficult
1829 * whether a type can cycle or not is now a flag, leaving room for more
1830 flags (as "ignored", if we feel the need one day ;)
1831 * Rename raw sockets to measurement sockets since "raw" has another
1832 meaning in networking community.
1835 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
1836 and offers features not belonging to GRAS but that most applications
1837 need. One day, it may be a set of plugins loadable at runtime.
1838 * New module: bandwidth
1839 bandwidth measurement between arbitrary nodes running this module. [MQ]
1841 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
1843 SimGrid (2.94) unstable; urgency=low
1845 The first beta release of SimGrid 3 !
1849 * Update the main page and the FAQ. Adding references to gforge.
1852 * Add a gras_os_getpid function.
1855 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
1856 * Extend the logs so that they also print PID, hostname, date, ... if
1858 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
1859 and kill the old version which were in testsuite/
1860 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
1864 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
1865 for users. Instead, each programming environment (GRAS, MSG,...) use it
1866 when needed to provide such a feature to users.
1867 Don't shortcut the mecanism or you will also shortcut the virtualization
1868 you need on the simulator.
1872 * Cleanups in configury with regard to compile optimization/warning flags.
1873 Also add -fno-loop-optimize to any powerpc since it's the optimization
1874 killing gcc (< 3.4.0).
1875 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
1876 needed by MSG examples complications
1877 * Borrow configury beautifications from PHP
1880 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
1881 warning (thanks loris for stumbling into this one).
1882 * Bugfix: stop loading private headers (gras_config.h) from the public
1886 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
1887 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
1888 RL would imply a DNS resolver, which is *hard* to do in a portable way
1889 (and therefore delayed).
1890 * Implement a real timer mecanism and use it in timing macros. This allows
1891 to avoid rounding errors and get a 0.000005 sec precision in timing
1892 macros. While I was at it, various cleanups:
1893 - allow to declare more than one timed section per file (fix a stupid bug)
1894 - move some private declaration to the right place
1895 - merge conditional execution and timing macros into emulation module
1896 - document the module
1897 - make sure the module cleanups its mess on gras_exit
1898 * Documentation improvements:
1899 - (new) how to compile applications using GRAS
1900 - (new) emulation support (timing macros)
1902 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
1904 SimGrid (2.93) unstable; urgency=low
1906 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
1909 - Use Paje properly where used. Still to be sanitized properly.
1910 - Portability fix: Add an implementation of the contexts using pthread
1914 - Add xbt_procname(): returns the name of the current process.
1915 Use it to show the current process's name in all logging.
1917 - fix detection of older flex version and the reaction, since we do
1918 depend on modern ones (we use lex_destroy)
1919 - Better separation of SG and RL in the libs: remove all simulation code
1920 from libgras. As a result, this lib is now only 200k when stripped.
1921 Some of the xbt modules may also be duplicated (two sets and such) and
1922 should be cleaned/killed before SG3.
1923 - Insist on using xlC on AIX because of weird problems involving gcc there.
1924 - Cleanup the make remote stuff. This is now done by scripts
1925 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
1926 mainly for our private use, but we're working on changing them to user
1929 - Bugfix: flush the socket on close only if there is some *output*.
1930 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
1932 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
1935 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
1937 SimGrid (2.92) unstable; urgency=low
1939 Alpha 3 on the path to SimGrid 3
1943 - New! First try of benchmarking macros.
1944 - New! First try so that gras_stub_generator generate deployment and
1945 remote compilation helpers.
1947 - Bugfix: Initialization fix in msg_test.
1951 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
1953 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
1955 - API Change: gras_os_sleep to take the amount of seconds as a double.
1956 Accepting an int was error prone since it was the only location where
1957 seconds were coded as such. It leaded to damn rounding errors.
1958 - Bugfix: Hard to belive that timers ever worked before this.
1960 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
1962 SimGrid (2.91) unstable; urgency=low
1964 Alpha 2 on the path to SimGrid 3
1968 - Bug fix in the lmm_solver.
1970 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
1971 through the function MSG_paje_output.
1972 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
1973 - It is possible to bound the rate of a communication in MSG with
1974 MSG_task_put_bounded() (was already in the previous version but I had forgotten
1975 to write it in the changelog).
1976 - Bug fix to let GRAS run on top of MSG until we move it directly on top
1981 - Various cleanups to the autotools stuff
1982 - Begin to move Gras examples to examples/gras/
1983 - Let make distcheck work again (yeah!)
1985 - documentation overhauled using doxygen.
1986 gtk-doc-tools is dead in SimGrid now.
1987 - Automatically extract all existing logging categories, and add the list
1988 to the documentation (long standing one, to say the less)
1990 - Cleanup the known architecture table. Reorder the entries to group what
1991 should be, and use a more consistent naming scheme.
1992 (some of the test dataset are still to be regenerated)
1993 - New! Allow library to register globals on each process just as userdata
1995 This is implemented using a xbt_dict and not a xbt_set, so we loose the
1996 lookup time (for now).
1997 Use it in msg and trp.
1998 This cleans a lot the internals and helps enforcing privacy of the
1999 headers between the gras components.
2000 - New! Add a timer mechanism, not unlike cron(8) and at(1).
2001 - Bugfix: gras_os_time was delirious in RL.
2002 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
2004 - Reenable GRAS now that it works.
2006 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
2008 SimGrid (2.90) unstable; urgency=low
2010 Alpha 1 on the path to SimGrid 3
2012 * It is a long time since the last release of SimGrid. I'm sorry about
2013 that but as I had told you, I was rewriting a lot of things. I apologize
2014 to those who had been reporting bugs to me and that I had not answered.
2015 If your bug is still in the new version, please tell me. Here is a
2016 summary of the main changes.
2018 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
2019 lead by Martin Quinson. As a consequence SimGrid gains a lot in
2020 portability, speed, and a lot more but you'll figure it out later.
2021 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
2022 I wanted to release the new MSG as soon as possible and I have
2023 broken GRAS, which is the reason why, for now, only MSG is fully
2024 functional. A laconic description of these projects is available
2025 in the documentation.
2027 * REVOLUTION 2: I have removed SG and I am now using a new simulation
2028 kernel optimized for our needs (called SURF but only the developers
2029 should use it). Hence, MSG is now roughly 30 times faster and I think
2030 that by rewriting a little bit MSG, I could event speed it up a little
2031 bit more. Beside the gain in speed, it is also much easier to encode a
2032 new platform model with SURF than it was with SG. More to come...
2034 * REVOLUTION 3: I have tried to change a little as possible the API of
2035 MSG but a few things really had to disappear. The main differences
2036 with the previous version are :
2037 1) no more m_links_t and the corresponding functions. Platforms are
2038 directly read from a XML description and cannot be hard-coded
2039 anymore. The same format is used for application deployment
2040 description. The new format is described in the documentation.
2041 Have a look in tools/platform_generation. There is a tiny script
2042 that converts from the old platform format to the new one. Concerning
2043 the application deployment format, parsing the old one is tricky.
2044 I think most of you should however be able to convert your files. If
2045 it is really an issue, I can write a C code that does the conversion.
2047 2) the toolbox tbx does not exist anymore. We now have a library
2048 with much more data-structures but without the hash-tables (we have
2049 dictionaries that are much faster).
2051 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
2053 *****************************************************************************
2054 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
2055 * don't feel like converting the oldies. (Mt) *
2056 *****************************************************************************
2059 Version 2.90: "the long awaited one"
2060 - Finished rewriting and debugging MSG. Rewrote the documentation.
2061 - disable GRAS for now since it needs to be ported to the newest SG
2064 - Finish the port to windows (using mingw32 for cross-compile)
2067 - Main loop and datastructures of SURF. A cpu resource object is
2068 functional. Surf can thus be used to create cpu's with variable
2069 performance on which you can execute some actions.
2071 2004-11-15 Martin Quinson
2072 - Port to ARM. Simply added the alignment and size descriptions. Should
2073 work, but the ARM machines are so slow that I didn't had the opportunity
2074 to 'make check' over there yet.
2076 2004-11-15 Arnaud Legrand
2077 - Trace manager now written. It uses a heap structure and is therefore
2078 expected to be efficient. It may however be speeded up (particularly
2079 when many events occur at the same date) by using red and black
2080 trees. One day maybe...
2081 - Max-min linear system solver written. It uses a sparse matrix
2082 structure taking advantage of its expected use. Most operations are
2083 O(1) and free/calloc are called as few as possible. The computation of
2084 the minimum could however be improved by using a red and black tree
2087 2004-11-03 Arnaud Legrand
2088 - Rename every gras_* function that was in xbt/ to its xbt_
2090 - Add a heap and a doubly-linked list to xbt
2091 - Added a dichotomy to the dictionaries. make check works as well before
2092 so I assume that the patch is correct. I do not know however if things
2093 run effectively faster than before now. :)
2095 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
2096 SimGrid, and the version number is bumped to 2.x
2098 2004-10-29 Martin Quinson
2099 - Introduction of the remote errors.
2100 They are the result of a RMI/RPC on the remote machine.
2101 ErrCodes being scalar values, you can't get the host on which those
2102 errors did happen. Extending the error mechanism as in Gnome is possible.
2103 No idea yet whether it is a good idea.
2105 2004-10-28 Martin Quinson
2106 - Interface revolution: the Starred Structure Eradication.
2107 I used to do typedef struct {} toto_t; and then handle *toto_t.
2108 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
2109 - ???_t is a valid type (builded with typedef)
2110 - s_toto_t is a structure (access to fields with .)
2111 - s_toto is a structure needing 'struct' keyword to be used
2112 - e_toto_t is an enum
2113 - toto_t is an 'object' (struct*)
2115 typedef struct s_toto {} s_toto_t, *toto_t;
2116 typedef enum {} e_toto_t;
2117 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
2118 s_toto_t) is private.
2120 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
2121 so that it can set the variable to NULL. It was so for dicts and sets,
2122 it changed for dynars.
2124 - Fix a bunch of memleaks in dict_remove
2125 - Fix a bug in sg/server_socket opening: it failed all the time.
2127 2004-10-07 Martin Quinson
2128 - Speed up dynar lookup operation a bit.
2130 gras_dynar_get is dead.
2132 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
2133 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
2134 (which gives you the address of the stored data).
2136 gras_dynar_get_as is an helpful macro which allows you to retrieve a
2137 copy of the data using an affectation to do the job and not a memcpy.
2139 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
2140 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
2142 It does not really speedup the dynar test because they are
2143 setting elements all the time (and look them seldom). But the dict does
2144 far more lookup than setting.
2146 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
2148 2004-10-05 Martin Quinson
2149 - Allow to (en/dis)able the cycle detection at run time.
2151 Whether we should check for cycle or not is now a property of each
2152 datatype. When you think there may be some cycle, use datadesc_cycle_set.
2153 datadesc_cycle_unset allow to remove this property when previously set.
2155 Note that the cycle detection is off by default since it impacts the
2156 performance. Watch the data you feed GRAS with ;)
2158 This property is hereditary. Any element embedded in a structure having it
2159 set have it set for the time of this data exchange.
2161 You should set it both on sender and receiver side. If you don't set it on
2162 sender side, it will enter an endless loop. If you forget on receiver
2163 side, the cycles won't be recreated after communication.
2165 - Header reorganization.
2166 Kill gras_private.h, each submodule must load the headers it needs.
2168 2004-10-04 Martin Quinson
2169 - Interface revolution: do not try to survive to malloc failure.
2171 Now, gras_malloc and friends call gras_abort() on failure.
2172 As a conclusion, malloc_error is not a valid error anymore, and all
2173 functions for which it was the only gras_error_t return value are
2174 changed. They now return void, or there result directly.
2175 This simplify the API a lot.
2177 2004-09-29 Martin Quinson
2178 - Re-enable raw sockets.
2179 Created by gras_socket_{client,server}_ext;
2180 Used with gras_raw_{send,recv}
2183 It should allow to kill the last bits of gras first version soon.
2185 This is not completely satisfactory yet (duplicate code with
2186 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
2189 - Simplify transport plugin (internal) interface by not passing any
2190 argument to _server and _client, but embedding them in the socket
2193 2004-09-28 Martin Quinson
2194 - Finish the port to AIX.
2195 autoconf was my problem (segfault within the malloc replacement
2196 function. No idea why)
2198 2004-09-16 Martin Quinson
2199 - Fix some size_t madness on 64bit architectures.
2201 2004-09-08 Martin Quinson
2202 - Reduce the number of system headers loaded, overload some more system
2203 calls (such as malloc to cast the result of the system one, and work
2205 - Fix and reintroduce the config support
2207 2004-09-07 Martin Quinson
2208 - Source code reorganization to allow Arnaud to surf all over there.
2209 - Allow to document the logging categories.
2210 - Remove all uppercase from logging categories and useless cleanup in names.
2212 2004-08-18 Martin Quinson
2213 Version 0.6.2 (protocol not changed; API changed)
2214 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
2215 gras_error_t), and NULL when not found. Functions expecting a msgtype
2216 as argument (msg_wait; msg_send) deal with NULL argument by providing a
2217 hopefully usefull message.
2218 - Portability to prehistoric sparcs again
2220 2004-08-17 Martin Quinson
2221 Version 0.6.1 (protocol not changed; ABI not changed)
2222 - prealloc some buffers to speed things up
2224 2004-08-11 Martin Quinson
2225 Version 0.6 (protocol not changed; ABI expended)
2226 - The parsing macro can deal with the references, provided that you add
2227 the relevant annotations (using GRAS_ANNOTE(size,field_name))
2229 2004-08-09 Martin Quinson
2230 Version 0.5 (protocol not changed; ABI changed)
2231 - Allow to off turn the cycle detection code in data exchange at
2232 compilation time. It should be at run time, but I'm short of time (and
2233 the config stuff is still broken). That way, we keep dict out of the
2234 critical path, which is good because the performance is poor:
2235 - search not dichotomial yet
2236 - dynar give no way to access their content and memcpy everytime
2237 - In composed data description (struct, ref and so on), stop foolness of
2238 keeping the subtype's ID, but store the type itself. This keeps sets out
2239 of the critical path, which is good since they rely on dynar and
2240 dictionnaries. The only loose of that is that we cannot detect the
2241 redeclaration of a structure/union with another content (but I'm not sure
2242 the code detected well this error before anyway). We still can detect
2243 the redefinition discrepancy for the other types.
2244 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
2245 it breaks the code because of type-punning used all over the place).
2246 This breaks on all non-gcc architectures (for now).
2248 All those changes (plus the buffer of last time) allow me to gain 2 order
2249 of magnitude on cruel tests consisting of 800000 array of integers on two
2250 level of a hierarchical structure (200 secondes -> 4 secondes)
2253 - the selector of reference must now return the type it points to, not
2254 the ID of this type.
2256 2004-08-06 Martin Quinson
2257 Version 0.4 (protocol changed; ABI not changed)
2258 - Allow to pass --gras-log argument to processes in simulation mode. Really.
2259 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
2260 - Implement a buffer transport, and use it by default (it relies on tcp in
2261 real life and on sg in simulation).
2262 That's a bit hackish since I had a new field to the structure to store
2263 its data without interfering with the subtype ones. Inheritance
2264 is tricky in C. And that's a kind of reverse inheritance with one class
2265 derivating two classes. Or maybe a game with java interfaces. Anyway,
2266 that's damn hard in C (at least).
2267 Moreover, I got tired while trying to ensure plugin separation and
2268 genericity in SG mode. MSG wants me to do weird things, so let's go for
2269 cruel hacks (temporarily of course ;).
2270 See comment in transport_private.h:71
2271 - do not include all the _interface headers in private but in the files
2272 which really need them (to cut the compilation time when they are
2275 2004-07-26 Martin Quinson
2276 Version 0.3 (protocol not changed; ABI changed)
2277 - Major overhault of the datadesc interface to simplify it:
2278 - shorted the function names:
2279 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
2280 - add a trivial way to push/pop integers into the cbps without malloc.
2281 This allows to make really generic sub_type description, which simply
2282 pop their size of the stack.
2283 - add a function gras_datadesc_ref_pop_arr() which does what users want
2284 most of the time: Declare a dynamic array (which pops its size of the
2285 stack) and declare a reference to it. Poor name, but anyway.
2286 - kill the post-send callback, add a post-receive one
2288 2004-07-23 Martin Quinson
2289 Version 0.2 (protocol changed; ABI changed)
2290 - add some testing for cpbs in the test cases, and fix some more bugs.
2291 This invalidate again the little64 data file, since I cannot regenerate
2293 - remove an awfull optimization in the logging stuff, allowing me to:
2294 - understand it again
2295 - learn gcc how to check that the argument match the provided format
2296 - fix all errors revealed by gcc after that
2297 - internal keys of dict are not \0 terminated. Deal with it properly in
2298 loggings instead of segfaulting when the user want to see the logs :-/
2300 2004-07-22 Martin Quinson
2301 - Fix some stupid bug preventing cbps (callback postit) from working
2303 2004-07-21 Martin Quinson
2304 - Some documentation cleanups
2305 - remove the useless last argument of msgtype_declare
2306 - rename the Virtu functions to fit into the 'os' namespace
2307 - move headers src/include -> src/include/gras/ and stop fooling with
2308 gras -> . symbolic link
2309 - make distcheck is now successful
2311 2004-07-19 Martin Quinson
2313 - Build shared library also
2314 - Install html doc to the right location
2315 - stop removing maintainer files in make clean
2316 - build tests only on make check
2318 2004-07-13 Martin Quinson
2320 - No major issue in previous version => change versionning schema
2321 - Re-enable little64 convertion test now that Abdou kindly regenerated the
2322 corresponding dataset.
2324 2004-07-11 Martin Quinson
2326 - Get it working with any kind of structure (we can compute the padding
2327 bytes remotely for all the architectures I have access to)
2328 - Implement the structure parsing macro (still not quite robust/complete)
2329 - Improvement to the remote testing toysuite
2331 2004-07-10 Martin Quinson
2332 [autoconf mechanism]
2333 - get ride of a bunch of deprecated macros
2334 - actually run the test for two-compliment, not only compile it :-/
2335 - test whether the structures get packed (and bail out if yes. Damn.
2336 Alignment is a serious matter)
2337 - test whether the structures get compacted (but respecting the alignment
2338 constraints of each types)
2339 - test whether the array fields of structures can straddle alignment boundaries
2341 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
2342 (took me 2 hours to find that bug, looking at the wrong place)
2343 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
2344 before sending/receiving and are used to compute the offsets of fields
2345 - Given that padding size depend even on compiler options, keep track of
2346 alignment and aligned_size only for the current architecture. Not a big
2347 deal since we send structure fields one after the other (seems
2349 - Add the datastructure used for IEEE paper by the PBIO guys to the test
2350 program, let it work on linux/gcc/little32. portability todo.
2352 2004-07-08 Martin Quinson
2353 - import and improve remote compilation support from FAST
2354 - make sure make check works on half a dozen of machines out there
2356 2004-07-07 Martin Quinson
2357 Let's say it's version 0.0.3 ;)
2358 - Implement conversions (yuhu!)
2359 - Let it work on solaris (beside conversion, of course)
2360 - Stupid me, using rand() to generate the conversion datatests in not wise.
2362 2004-07-06 Martin Quinson
2363 - Let make dist work, since I'm gonna need it to compile on remote hosts
2364 - Let Tests/datadesc_usage write the architecture on which the file was
2365 generated as first byte.
2366 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
2367 architecture descriptions.
2368 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
2369 on those architectures.
2370 - Optimization: send/recv array of scalar in one shoot
2372 2004-07-05 Martin Quinson
2373 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
2375 - Plug a whole bunch of memleaks
2376 - each process now have to call gras_{init,exit}. One day, their log
2377 settings will be separated
2378 - Continue the code factorisation between SG, RL and common in Transport.
2380 2004-07-04 Martin Quinson
2382 - Redistribution between SG and RL.
2383 We wanna have to accept in SG, so move accepted related parts of RL in
2384 the common part. (more precisely, the dynar of all known sockets is no
2385 more a static in transport.c, but part of the process_data)
2387 [gras_stub_generator]
2388 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
2390 2004-07-03 Martin Quinson
2391 - Create a new log channel tbx containing dict, set, log, dynar (to shut
2392 them all up in one shot)
2394 - Fix the ugly case of reference to dynamic array.
2395 - New (semi-public) function gras_datadesc_size to allow the messaging
2396 layer to malloc the needed space for the buffer.
2398 - gras_socket_close now expect the socket to close (and not its address to
2399 put NULL in it after it). This is because the socket passed to handlers
2400 is one of their argument (=> not writable).
2402 - propagate the interface cleanup from last week in datadesc, ie remove a
2403 superfluous level of indirection. User pass adress of variable
2404 containing data (both when sending and receiving), and not of a variable
2405 being a pointer to the data. Let's say that I like it better ;)
2406 The price for that is constructs like "int msg=*(int*)payload" in
2407 handlers, but it's a fine price, IMHO.
2409 - Let it work in RL (yuhu)
2411 2004-06-21 Martin Quinson
2413 - porting SG plugin and SG select to new standards (works almost).
2414 - plug memleaks and fix bugs around.
2417 - cleanup the prototype of data recv and force users to specify when they
2418 want to handle references to objects. Test case working even for cycles.
2419 - plug memleaks. Valgrind is perfectly ok with this.
2421 2004-06-12 Martin Quinson
2423 - cleanup the separation between plugin and main code in plugin creation
2425 2004-06-11 Martin Quinson
2427 - Reput hook for raw sockets, needed for BW experiments
2428 - kill a few lines of dead code
2429 [Data description] Interface cleanup
2430 - gras_datadesc_by_name returns the searched type or NULL.
2431 That way, no variable is needed to use a type desc once, which makes
2433 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
2434 two parameters were strings (field name, type name), leading to
2436 [Dicos] Interface cleanup
2437 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
2438 This is consistant with the dynar API.
2440 2004-04-21 Martin Quinson
2442 - Porting to new standards.
2444 - interface cleanup.
2445 There is no bag anymore, no need to take extra provision to mask the
2446 pointers behind "ID".
2447 Better splitup of functions between files create/exchange/convert.
2448 This is still a bit artificial since convert and receive are so
2449 interleaved, but anyway.
2451 - add a queued message list to procdata (the ones not matching criteria
2453 - factorize some more code between SG and RL wrt procdata
2455 - use gras_exit in example to track memleaks
2456 - get rid of gs_example now that GS is properly integrated into gras
2457 - update run_test to integrate the latest tests (datadesc)
2459 - rename WARNINGn macros to WARNn since it prooved error-prone
2461 2004-04-19 Martin Quinson
2463 - register init/exit functions within gras module mechanism
2464 - send/receive function.
2465 Convertion is not implemented, but short-cutted if not needed.
2466 struct/array elements are sent one by one (instead of block-wise), but
2467 nobody really cares (yet). Get a prototype before optimizing.
2468 - tests (using a file socket) for DD send/receive on:
2469 - base types: int, float
2470 - array: fixed size, string (ie ref to dynamic string)
2471 - structure: homogeneous, heterogeneous
2472 - chained list, graph with cycle
2473 Believe it or not, valgrind is not too unhappy with the results. The
2474 cycle happily segfaults, but the others are ok. And I'm sick of pointers
2478 - Bugfix when using a filename explicitely (instead of '-')
2480 2004-04-09 Martin Quinson
2482 - factorize more code between RL and SG in socket creation
2483 - Complete the implementation and tests of:
2485 o file (only in RL, and mainly for debugging)
2487 I lost 3 days to design a portable address resolver, and then decided
2488 that the prototype mainly have to run on my box.
2489 Addressing portability too early may be like optimizing too early :-/
2491 - use gras_init in the Tests instead of the crappy parse_log_opt
2492 (the latter function is removed)
2493 [Conditional execution]
2494 - New functions: gras_if_RL/gras_if_SG (basic support for this)
2495 [Code reorganisation]
2496 - Get rid of libgrasutils.a since it makes more trouble than it solves.
2497 Build examples against the RL library, since there is no way to disable
2498 its creation for now.
2500 For information, the beginning of coding on GRAS was back in june
2501 2003. I guess that every line has been rewritten at least twice since