1 SimGrid (3.10) NOT RELEASED; urgency=low
4 * Our own implementation of getline is renamed xbt_getline, and gets
5 used even if the OS provide a getline(). This should reduce the
6 configuration complexity by using the same code on all platforms.
9 * Reintegrate Java to the main archive as desynchronizing these
10 package is not acceptable anymore (Java is now considered stable)
11 * Bugfix: Task.setDataSize() only changed the C world, not the value
12 cached in the Java world
14 -- $date Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
16 SimGrid (3.9) stable; urgency=low
18 The Grasgory release: GRAS is really dead now.
20 * Complete overhaul of the internal host structures scheme.
23 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
24 was considered as experimental and badly maintained since then.
25 * Keeping it was thus a trap to our potential users, that could take
26 it instead of MSG or SMPI by mistake despite is pity state.
27 * GRAS seems to have very few users (if any), and no one volunteered
28 to maintain it further. It also induces a lot of XBT code (for
29 portability sake), that must be maintained too.
30 * For all these reasons, we killed GRAS. If someone wants to revive it
31 in the future, don't cry, our git history still remembers of GRAS.
34 * Major overhaul. Merge our documentation again as time proved that
35 splitting it was really not helping our users.
36 * Further improve the developer documentation to help newcomers
37 hacking on SimGrid itself. The user documentation (and in
38 particular, the beginner documentation) is still in a sorry state.
41 * Now works on Windows too!
42 * Much more extensive test suite, from MPICH
45 * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
46 (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
47 dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
48 * Bug fix: let task be scheduled when the last dependency to be solved is
50 * Remove SD_load_environment_script function.
51 Use the C sg_platf function if you want to declare a platform
55 * New function: MSG_process_get_number()
56 * Old function documented: MSG_config()
57 * Remove MSG_load_platform_script function
58 Use the C sg_platf function if you want to declare a platform
62 * Change the default value of the TCP_gamma constant (maximal size of TCP
63 congestion window) to a more realistic 4MiB value. If you notice changes in
64 your simulation results, you can fall back to the previous 20k tiny window
65 by adding --cfg=network/TCP_gamma:20000 on command line.
66 * (Hopefully) fix a bug wrt periodic availability and state traces
67 * Bug fix: use default values at start when first event in availability/state
68 trace is not at time 0.
71 * remove the "new_" part of function name sg_platf_new_trace_connect
72 (resulting in sg_platf_trace_connect), since it does not create
76 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
77 use case where it's really mandatory, and maintaining it was a pain in
79 * New: xbt_fifo_search(), search an item with a user-provided
80 comparison function instead of dumb pointer comparison.
83 * Fix the lua deployment:
84 Use `simgrid.init_application()` before deployment instead of
85 `simgrid.msg_register_application()` after.
88 * Transfer the tracing files into the corresponding modules.
90 -- Tue Jan 29 19:38:56 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
92 SimGrid (3.8.1) stable; urgency=low
94 The "we are told that some people want to also *install* the simgrid
97 * Add missing file "tesh.1" to the archive.
99 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
101 SimGrid (3.8) stable; urgency=low
103 The Psssshiiiit release: SimGrid jumps into the Cloud.
106 * Add an experimental interface to manipulate VMs. They are mainly
107 process groups with very few intrinsic semantic, but they should
108 allow you to build the semantic you want easily.
109 * New function: MSG_host_set_property_value()
110 * New function: MSG_process_on_exit(). To clean memory in all cases.
111 * Bug fixes that made the host (and link) failures unusable.
112 * Add a way to auto-restart process when the host in which they are
113 executing comes back (ON_FAILURE="RESTART" on deployment file,
114 MSG_process_auto_restart_set).
115 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
116 please stop using the old ones, they are DEPRECATED.
118 * Deprecate functions MSG_global_init() / MSG_global_init_args()
119 Please use MSG_init() instead. (reducing the amount of entry
120 points in the library helps us).
121 * Make it impossible to link against the wrong version of the lib
122 * Deprecate MSG_clean(). No need to call it anymore.
123 * Function MSG_get_host_number() is not deprecated anymore.
126 * Split the doc into a user guide and a reference guide.
127 * Start a developper guide to help people hacking on SimGrid.
130 * Enable tracing by default. This modules rocks you should use it.
131 * Remove option custom_flags. Now use environment variables CFLAGS
133 * Use default cmake things to detect lua instead of home grown ones.
134 * New option "enable_mallocators" to disable mallocators, for debugging
135 purpose ("on" by default).
138 * Bug fixes around the resource failures: don't let the processes
139 survive the host they are running onto.
140 * Add an interface to auto-restart processes when the host in which they are
141 executing comes back.
142 * Ensures that SIMIX_clean is called automatically. It's not part of
143 the public interface anymore (bindings should be updated).
146 * Bug fix for when SD_Simulate is called with a positive value: be careful
147 when comparing doubles. Sometimes they are different for non significant
149 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
150 parallel task whose initial work is distributed among host according
151 to the Amdahl's law. Such tasks are created with a parameter alpha
152 that corresponds to the non-parallelizable part of the computation.
153 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
154 between two sets of workstations assuming a 1D block distribution (each
155 workstation owns a similar share of data) on both sides.
157 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
158 Data redistribution will be automatically scheduled once parent and child
159 are both scheduled. The filling of computation_amount and
160 communication_amount structures is now done seamlessly thanks to the chosen
162 * New function SD_workstation_dump to display various information
163 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
164 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
165 bandwidth on the route onto which the task is scheduled and the amount of
167 To divide the nominal bandwidth by 2, the rate then has to be :
168 rate = bandwidth/(2*amount)
169 * Compute tasks that have failed can now be rescheduled and executed again
170 (from their beginning)
171 * Increasing source code coverage (src/simdag is now covered at 95.8%
175 * Re-implement time-independent trace replay using SMPI (at the
176 smpi_smp_* level) instead of MSG. This should replace
177 examples/msg/actions/actions.c
178 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
179 hindexed and structs)
180 * Implement the exchange of non-contiguous data.
181 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
182 * Correct behavior of smpi/sender_gap and set its default value to 0
183 * Add option to asynchronously send small messages to allow better
184 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
185 specifies the size in bytes under which messages will be asynchronously sent.
186 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
187 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
190 * New C interface to define a platform: XML is now optional.
191 For more info, please check include/simgrid/platf.h.
192 * New interface to define random platforms from the C:
193 For more info, please check include/simgrid/platf_generator.h and
194 examples/msg/masterslave/masterslave_platfgen.c
195 * Export a sg_cmdline dynar containing all the arguments we got from
199 * Two new tracing options for adding comments to trace file so you
200 can track your experiments (see --help-tracing for details).
201 * New option to generate a impoverished trace file (--cfg=tracing/basic:1)
202 * Adding the SimGrid version that generated the trace file as a comment.
203 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
204 * Fix to avoid key clashes on Paje links
205 * Other minor fixes related to the Paje specification
208 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
209 and renamed to xbt_str_hash() and xbt_str_hash_ext().
210 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
211 * Greatly improve the robustness of mmalloc to user errors (such as
212 using an area after freeing it, or freeing it twice)
214 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
216 SimGrid (3.7.1) stable; urgency=low
219 * Restore the prototype of MSG_process_create_with_environment() to
220 the pre-3.7 situation by removing the kill_time argument.
221 * Add a MSG_process_set_kill_time() function instead.
224 * Fix weird behaviors when dealing with parallel tasks.
227 * Simgrid is now built as a dll.
228 * Simgrid-java now works on Windows.
229 * Simgrid-Java is now included into Windows package.
232 * First pre-build package for MacOSX.
235 * Fix compilation when using MSG_USE_DEPRECATED.
236 * Fix some compilation issues on Macs and Windows.
237 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
238 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
240 We discovered that the Lua console is broken, but we are missing the
241 manpower to fix it right now. The problem existed in 3.7 too, so we
242 are not blocking the release for that. Sorry if you depended on this
243 feature, any help would be really welcome.
245 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
247 SimGrid (3.7) stable; urgency=low
249 The "spring cleanups (before the next Big Project kicks in)" release.
252 * We can specify the SMPI latency/bandwidth factor with command line
253 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
254 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
255 You can also use the "config tag" from platform file by adding this line
256 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
257 (see "example/platforms/tag_config.xml" to use "config tag").
258 Note that the command line supersedes the platform file configuration.
259 * Change the correction factors used in LMM model, according to
260 the latest experiments described in INRIA RR-7821.
261 Accuracy should be improved this way.
262 * Use the partial invalidation optimization by default for the
263 network too. Should produce the exact same results, only faster.
264 * Major cleanup in surf to merge models and split some optimization
265 mechanisms from the core of the models. As a result you can now
266 specify which model to use (e.g., --cfg=network/model:LV08
267 --cfg=cpu/model:Cas01) and which optimization mode to use
268 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
269 Incompatible combinations should err at initialization. See
270 --help-models for the list of all models and optimization modes.
271 * The CLM03 workstation model was dropped for simplicity because it
272 used the deprecated CM02 network model. Use default instead.
273 * Rename the TCP_gamma configuration option to network/TCP_gamma
274 * Rename the coordinates configuration option to
275 network/coordinates, and document it
276 * Use now crosstraffic keyword instead of the terribly misleading
277 fullduplex keyword. It is activated by default now in the current
278 default model, use --cfg=network/crosstraffic:0 to turn it off.
279 * Ongoing refactoring the model parsing to make XML files optional
280 See include/simgrid/platf.h for details (still to be completed)
283 * Major overhaul of the documentation. Almost instructive now :/
284 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
285 functions and friends. This interface was considered as
286 deprecated since over 2 years, it's time to inform our users that it is.
287 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
288 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
289 use these (crappy) functions in your code.
290 These functions will be removed soon. Stop using them now.
291 * Deprecate MSG_get_host_{table,number}
292 Implement MSG_hosts_as_dynar() instead.
293 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
294 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
297 * Stabilize the parallel execution mode of user contexts
298 * Introduce configuration variables to control parallel execution:
299 - contexts/synchro: Synchronization mode to use when running
300 contexts in parallel (either futex, posix or busy_wait)
301 - contexts/parallel_threshold: Minimal number of user contexts
302 that must be part of a scheduling round to switch to parallel
303 execution mode (raw contexts only)
304 * Fix bugs that prevented to use suspend/resume along with
305 synchronization structures.
306 * Fix bugs in process termination that lead to invalid memory access
307 in very specific conditions.
310 * Introduce a parallel mode for the models (controlled by surf/nthreads
311 configuration item). In our tests, running the models in parallel
312 never lead to any speedups because they are so fast that the gain
313 of computing each model in parallel does not amortizes the
314 synchronization costs, even when ultra fast futexes are used.
315 This is released anyway because YMMV.
318 * Performance boost by using a swag internally to compute the set of
319 tasks that are finished and should constitute the return value of
323 * Enable it by default now that it is considered rather stable.
326 * Documentation of the tracing functions.
327 * Performance gains when tracing categorized/uncategorized resource
328 utilization by avoiding calls to get route when updating resource
329 variables. LMM constraints are being used instead.
330 * API changed to set task categories. Use MSG_task_set_category instead
331 of TRACE_msg_set_task_category, and SD_task_set_category instead
332 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
333 * Bugfix for graphicator, routes not correctly obtained, memory leaks
334 * Examples for link user variables added (see at examples/msg/tracing/)
335 * Deprecated function TRACE_msg_set_process_category completely removed
336 * Trace header updated according to the latest Paje file format
337 * Tracing network lazy updates, no longer obligate users to use full updates
338 * --cfg=tracing/platform:1 also registers power/bandwidth variables
339 * Experimental: let user code declare/set/push/pop application states for hosts
340 * API changed to allow the manual creation of graph configuration files
341 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
344 * Improve the API of Lua MSG bindings, using the Lua spirit.
345 * Each simulated process now lives in its own Lua world (globals are
346 automatically duplicated). It helps writing simulators. Will allow
347 to run Splay programs within SimGrid in the future.
348 * Add a Chord example in Lua, equivalent to the MSG one.
351 * Start the implementation of a solution to express temporal
352 properties, not only local assertions. This is still an
353 experimental work in progress, stay clear from it to be safe.
357 - Add new runtime parameters --help-logs and --help-log-categories
358 to display informations about supported logging parameters and
360 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
361 don't exists anymore.
362 * Mallocators: allow value NULL for the reset function.
364 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
365 create homogeneous dictionaries, where all the elements share the
366 same free function. Non homogeneous dictionaries will be
367 deprecated in the next release.
368 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
369 - Multi-level dictionaries are deprecated.
371 - new function xbt_dynar_search_or_negative() that is useful when
372 you have less than 2 million elements in your dynar and don't
373 want of the extra complexity of catching exceptions when the
374 element is not found.
376 - Make xbt_os_thread module (for thread portability) public.
377 Documentation is still to come, sorry.
379 - Cleanups and simplifications to make it maintainable again.
380 - Exotic features (such as memalign and valloc) were removed.
381 - The metadata were extended and improved so that the
382 model-checker becomes able to explore and inspect the heaps.
383 - This may induce a performance drop when enable_model-checking is
384 ON in cmake (even if it's not used in the simulation), but it is
385 necessary at this point to get MC working.
387 Turn model-checking OFF if simulation performance matters to you.
388 Not enabling it at runtime is not enough, disable it in cmake.
390 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
392 SimGrid (3.6.2) stable; urgency=low
394 The "Not coding new stuff allows to polish old things" release.
397 * New bindings to the NS3 packet level simulator (experimental)
398 * Use the raw (efficient) execution contexts instead of the sysv
399 (portable) ones when possible.
400 * libpcre is now mandatory in any cases since not using it led to
401 severe performance loss and possibly other issues
402 * Update the XML platforms:
403 - G5K: include the latest machine in Nancy
404 - GridPP and LCG: new platforms
405 * Documentation was partially updated, at least (more to come)
407 Bug fixes, cosmetics and small improvements
408 * Free terminated processes before the end of the simulation to avoid
409 exhausting the memory of users having very dynamic amount of
411 * Bug fix and cosmetics about canceling non-running tasks
412 * Bug fix about the dot loader's issues when using libcgraph
415 * Create an installer for windows with nsis (amd64 and win32)
416 - Add an hello world project to illustrate simgrid project creation.
417 - Embed libpcre into the Simgrid installer to avoid
418 its compilation burden
419 * The raw execution contexts should work on Apple now
420 * Port to Windows 64 bits
421 - Sysv contexts now have an implementation for this arch
422 - GRAS communication features now support this arch
423 * Drop support for borland compiler on windows
424 - this code was not maintained, and we kinda depend on gcc nowadays
425 * Fix portability issues on kfreebsd/gnu: build error about semaphores
426 * Fix portability issue on unstable ubuntu: linker became picky on
429 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
431 SimGrid (3.6.1) stable; urgency=low
433 The "Oops, we broke Macs too" release
436 * Fixed contexts detection so that raw ones are used when possible
437 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
438 leads to a strange error, with user code segfaulting sometimes when
439 the generated code is not perfectly aligned (which is not
440 controllable from the user side, depends on the amount of code)
443 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
445 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
447 SimGrid (3.6) stable; urgency=medium
449 The Summer Release, also known as the "OMG! They Killed Kenny!" version
452 * Bindings now constitute their own package, separated from the main one.
453 Rationale: reduce our maintenance nightmare by reducing the module coupling
454 They will soon be released on their own on gforge.
456 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
457 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
459 GRAS: It is not considered as stable anymore, but experimental. Sorry.
460 * It's not quite deprecated for now because we have no replacement,
461 but it may soon become the case.
464 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
465 * Fortran: New user-level cache variable to store the rank of the running
466 process. This improves performance by an order of magnitude.
467 * C: New coccinelle script to automatically locate and modify global and
468 local static variables.
469 * Improved SMPI network model with a sender-side gap to account for multiple
473 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
474 only say if a communication is finished, no matter whether it succeeded or
475 failed. You can call MSG_comm_get_status() to know the status of a finished
477 * New function MSG_task_dsend() to send a task and detach it. When a
478 communication is detached, you are never notified of its success or failure
479 and the memory is released automatically once it is finished. This function
480 is useful when you don't care about the end nor the success of a
482 * Change the prototypes of action replay. Sorry for inconvenience,
483 but this is really more efficient this way (and to adapt your code,
484 you just have to fix the initialization, that shouldn't be too long)
485 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
486 ever managed to do anything useful with it.
487 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
488 takes a dynar of communications. It returns immediately and gives the
489 index of a finished communication (if any).
490 * New example: a basic implementation of the Chord P2P algorithm.
493 * New model for multi-core CPUs. You can now use the core attribute to
494 precise the number of cores of a host. This is a basic model. Every
495 process running on the host receives at most the power provided in
496 the DTD (throughput<=power). Total throughput of process cannot exceed
498 * New peer tag. This peer tag creates a tiny AS comprising a host and a
499 router linked by an up-link and a down-link (possibly asymmetrical).
500 This kind of pattern allows to easily build last-mile model style platforms.
501 Aggregating such patterns in a rule-based AS is thus the technique of
502 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
503 * New model for Vivaldi routing. We transformed the Vivaldi network model
504 into a Vivaldi routing model (based on the rule-based model). This allows to
505 combine Vivaldi based latencies with last-mile platforms.
508 * Added a check for NaN of IEEE754 infinite in the double entries of
510 * Introduce a new context factory "raw", highly inspirated from the
511 ucontext factory, but using manually crafted functions in assembly to
512 do the work in an efficient manner.
513 * Allow to change the used context factory at run time, not only at
514 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
515 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
516 contexts at runtime (only with raw contexts or ucontexts).
517 * Completely rewrote this module to allow parallel execution of user
518 processes. Use --cfg=contexts/nthreads:N to execute user processes
519 with N parallel threads (the default is 1, meaning no parallelism).
520 * Allow to decide dynamically between sequential and parallel modes.
521 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
522 processes in parallel only when their number is greater than or equal to P
524 * Added a check for NaN of IEEE754 infinite in the double entries of
528 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
529 won't output the state of processes when interrupted with Ctrl-C
530 * Add a new function xbt_dynar_to_array that transforms a dynar into a
531 NULL-terminated array. This may solve backward compatibility issues
532 due to the change to return type of SD_simulate. See also:
533 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
534 * Add new macros with variable number of arguments.
535 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
536 - in xbt/asserts.h: xbt_assert
537 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
538 - in xbt/ex.h: THROWF and RETHROWF.
539 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
541 * Change xbt_die() to accept a format string with arguments, just like printf.
542 * New data structure: xbt_lib_t, like a dict but more general and with better
546 * New configuration options
547 Options triva/categorized and triva/uncategorized can be used to generate
548 graph configuration files for Triva visualization tool.
549 * Configuration option tracing/platform is renamed to tracing/categorized
550 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
551 * New TRACE_user_link_variable interface:
552 User provides the name of the link and the tracing variable to attach to it
553 * the declaration of tracing categories must be done after the environment
555 * simpler tracing interface, just one way to declare categories
556 TRACE_category or TRACE_category_with_color, it is up to you
557 * links in the trace file are again identified by their names
558 * trace contains the full platform hierarchy exactly as declared using the ASes
559 * Options tracing/msg/[task|process]:1 groups the process by hosts
560 for both cases, tasks and processes must have names that are unique during the simulation
561 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
562 * The experimental option tracing/msg/volume is deprecated
563 its functionality may be reincorporated if needed
565 The tracing generates a trace file with unordered timestamped events,
566 because of the way the core simulator (surf) works. A script available
567 at the tools directory (fix-paje-trace.sh) can be used to put the events
568 in order. We have changed the tracing so it can generate ordered timestamped
569 events in the final trace, but depending on the simulator (and how much time
570 is simulated) that can lead to a huge memory utilization. It is deactivated
571 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
574 * Define a SIMGRID_VERSION macro in simgrid_config.h.
575 - We are trying hard to keep the API stable, but it may happen that
576 some things change (we're a research project after all, not a
577 nuclear plant operating system). If such things should happen, you
578 could rely on that macro to adapt.
579 - current value: 30600 for 3.06.00, aka 3.6
580 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
581 a number that can be compared with SIMGRID_VERSION.
582 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
583 assertions and verbose/debug logging events are disabled at compile time.
585 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
587 SimGrid (3.5) stable; urgency=medium
590 * New feature to any SimGrid-based simulator: Model-Checking
591 Check SIN#1 for more details.
594 * New Model SMPI (three-interval linear regression for correction factors)
595 See RR-7426, available at http://hal.inria.fr/inria-00527150
596 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
597 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
598 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
599 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
600 * See also src/smpi/README
605 - Tracing API changes: TRACE_start and TRACE_end should not be called
606 by user-code. They are automatically called by simulators created
607 with SimDAG, MSG and SMPI if the toolkit is compiled with
608 tracing_enabled=ON. Categories declaration and utilization remain the
609 same for MSG and SimDag.
610 - A function was added to the tracing API to declare categories with
612 - TRACE_category_with_color (char *category, char *color)
613 where color must be in the following format
614 "%f %f %f", red, green, blue
615 and red, green, blue are float values in the interval [0, 1]
616 - User can specify NULL as color parameter, or continue calling
618 On that case, the tracing system will define random colors
619 - The following command-line options are supported:
620 --cfg=tracing/filename:msg.trace
621 --cfg=tracing:1 (activate tracing, needed to use others)
622 --cfg=tracing/platform:1 (categorized resource use)
623 --cfg=tracing/uncategorized:1 (uncategorized resource use)
624 --cfg=tracing/msg/task:1 (task creation)
625 --cfg=tracing/msg/process:1 (process creation, migration)
626 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
627 --cfg=tracing/smpi:1 (SMPI interface tracing)
628 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
629 - examples of examples/msg/tracing updated
631 - DAXLoader and DOTLoader functions can generate tasks with categories
632 - A new function to attribute a category to SD tasks:
633 TRACE_sd_set_task_category (SD_task_t task, char *category)
634 * Tracing the MPI interface implemented by SMPI
635 - Collective operations are traced with states
636 - Point-to-Point operations are traced with states/links
637 - Tracing activated by a parameter "-trace filename" passed
638 to smpirun during execution (considering that simgrid
639 is compiled with tracing enabled)
640 - To run the simulation with gdb, the simulator
641 accepts --cfg=tracing/smpi:1 to trace SMPI
642 - tesh files to check if smpi tracing is ok
643 - See examples/smpi/NAS/DT-trace
644 * GTNetS tracing re-worked
645 - adaptation to the tracing system of GTNets to cope
646 with modifications regarding the fullduplex mode
647 - new tesh files to check if gtnets tracing is ok
650 * Asynchronous communications through the functions:
651 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
652 * New function: MSG_load_platform_script()
653 to make possible using a lua script instead of XML files to set up platforms
654 * New function: MSG_set_function
655 to associate functions to processes, used when bypassing the parser
656 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
658 Platforms: Add some more examples in examples/platforms
659 * Grid'5000: see www.grid5000.fr
660 * *_30000_hosts.xml: various huge files [mainly scalability testing]
663 * Change the XML format. This is a very important modification. SimGrid
664 3.5 introduces a new hierarchical format based on the notion of
665 Autonomous Systems. Compatibility with old format is ensured
666 through the perl script provided in the install bin directory
667 bin/simgrid_update_xml.
668 It is now possible to build platforms with specific routing
669 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
670 connect several platforms together. We will try to provide soon
671 set of realistic platforms exploiting these properties (have a
672 look at examples/platforms/ for the moment).
673 * Take the opportunity of the XML format change to be a good XML citizen:
674 rename link:ctn to link_ctn and similar changes (also dealt with by
676 * Add a new routing scheme (rule-based) using regular expressions. It
677 enables to have an extremely low memory footprint when the
678 underlying routing is simple and can be compactly described. You
679 need to have libpcre4-dev (perl regular expressions) installed if
680 you want to use this routing scheme.
681 * Revive the cluster TAG and allow to easily and efficiently (both in
682 term of memory and speed) connect clusters together. Have a look
683 at teshsuite/simdag/platforms/ to see how this can be done. With
684 this tag, you can create clusters with thousands of tasks at no
685 cost (have a look at examples/platforms/).
686 Note: clusters are implemented as ASes, so there is no need for an
687 enclosing AS tag if you have only one cluster in your platform.
688 * Add new generic functions in the public interface that allows the user
689 to call SURF 'create_resource' methods from your code (same
690 functionality as the XML bypass mechanism but with a much lighter
692 * Add a new model (enabled through command line --cfg=network/model:SMPI)
693 that uses a piecewise linear approximation to produce better
694 results when exchanging small messages.
695 * Add a new parameter to handle correctly full duplex link and account
696 for interferences between uplink and downlink communications
697 (activate with --cfg=fullduplex:1).
700 * Rename the SD_READY (all dependencies are satisfied and task is
701 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
702 dependencies are satisfied) state.
703 This prevents a confusion between the notion of "ready to schedule"
704 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
705 simulated" (SD_RUNNABLE) used by the simulation kernel.
706 * Change the way a task is considered as ready. Instead of removing
707 dependencies when a task is done, a counter is decreased. This way,
708 it is always possible to reach ancestors thanks to the
709 SD_taks_get_parents function (even after the end of the simulation.)
710 * Change the return type of SD_Simulate from (SD_task_t*) into
711 xbt_dynar_t. This function was in handling a dynar internally and
712 converted it into a NULL terminated array for historical reasons.
713 * New function SD_dotload(char*) to load a DAG described in dot
714 format. This loader and the corresponding examples require the
715 installation of the graphviz library.
716 * Fix a bug in the management of tasks of size 0 in the surf network
717 models. This problem was only visible with SIMDAG and you should
718 thus disregard results produced with earlier versions if you
719 relied on this feature (some tasks were blocked because of this).
720 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
721 even though your applications were doing only point-to-point
722 communications and sequential computations. Now you can really use any
723 model you want (of course, if you create real parallel tasks, which are
724 not implemented in most models beside ptaskL07, this will abort).
725 * Add an example that schedules a DAX on an heterogeneous platform
726 using a Min-Min strategy.
727 * New function SD_workstation_get_current_task() that returns the kind
728 of task currently running on a workstation in the sequential access
730 * Raise some warnings when unexecuted tasks remains at the end of the
731 simulation. This is usually caused by cycles in the DAG.
734 * New function: SIMIX_process_set_function() called by MSG_set_function
735 * Change the underlying waiting queue in semaphores so that a process
736 can wait on several of them simultaneously (as in waitany).
737 * Fix the way to handle tokens in semaphores so that all access patterns
738 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
739 * kill the dirty pimple SIMIX_message_sizes_output()
740 Please use (proper) visualization instead
743 * New data container: setset (set of sets of elements)
744 * New module: mmalloc (mapped malloc, allowing to have several
745 independent segments of malloc)
746 * New function: xbt_dict_cursor_set_data()
747 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
748 * New function: xbt_dynar_is_empty()
749 * New function: xbt_fifo_get_last_item()
750 * Fix xbt_dynar_shrink(): use the right element size.
751 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
752 uninitialized areas during expand.
753 * Fix semaphores: previous implementation was severely broken.
754 * Use library init/fini functions for our initialization.
755 - you can use logs and other feature as soon as you want in your
756 code (even before the xbt_init / MSG_init)
757 - xbt_exit is now a no-op and produce a warning when used.
760 * Port GRAS to new SIMIX mechanisms. This allows gras users to
761 benefit from the latest improvement to the simulation kernel.
762 * Kill measurement sockets for now. If you rely on them, sorry. This
763 release is not for you. This feature will be reintroduced in the
764 future, but we cannot delay the release any further.
765 * New function: gras_msgtype_get_name().
766 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
767 * Fix (at last) the pmm example: it should not randomly fail anymore.
769 Build chain: bug fixes and overall polishing
770 * Cmake is now stable enough. Hence, we killed the autotools.
771 * Port to windows ( TM :)
772 * Fix the 'make install' target.
773 No need to use 'make install-simgrid' anymore
774 * Introduce a 'make dist' target compiling a *source* archive
775 'make package' compiles a binary archive
776 * Compile java files only on need
777 * Add --cd and --setenv command line options to tesh
778 * Out of source builds are not fully supported yet, but we are close
779 * Enable supernovae and optimization flags by default for our users
782 * Add layer to set up environment directly from lua, without XML.
783 * The effect of gras_stub_generator can be achieved through
784 lua too (check examples/gras/console/ping_generator.lua)
786 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
788 SimGrid (3.4.1) stable; urgency=low
790 The "Polishing easter eggs is probably a good idea" release.
791 This is a bug fixes release only.
795 * Fix a bug preventing the tasks from begin garbage collected.
798 * Fix a bug occuring when a host involved in a communication fails.
799 This was not detected properly by the other peer involved in the
800 communication. Now, it's reported as a network error.
803 * Warn the user about loop dependencies in data flow of DAX files
804 * Obey the control-flow dependencies of DAX files
807 * Add option "enable_smpi" allowing to not compile SMPI.
808 Probably useful for the (Mac) users experiencing a build error here
809 * Improve the detection of lua5.1 and ruby1.8
811 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
813 SimGrid (3.4) stable; urgency=low
815 The "Easter in Cargese" release. Also known as (major changes):
817 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
818 ~> bindings were greatly improved
819 ~> new tracing infrastructure for better visualization introduced
821 * the "Welcome to configury modernity" release.
822 ~> we switched from autotools to cmake, and improved our cdash
825 A more detailled list of changes follow (full detail in svn log).
827 Java Bindings: Various Cleanups
828 * (install java-gcj-compat-dev on debian-like to use them)
829 * Remove put/get: no need to export deprecated interface in Java
830 Use send/receive instead.
831 * Cleanup the examples and add a README per directory
832 * Remove example autoDestination (that's the only way to go now)
833 * Remove example explicitDestination (was a plain copy of basic)
834 * Make JniException a runtime exception, so that there is no need to
835 declare the fact that you may encounter such a beast. I guess that
836 nobody will ever want to survive such error.
837 * Create specific errors for each MSG case of failure:
838 host failure, transfer failure, timeout, task cancelled
839 * Cleanup the exceptions that may get thrown by each function
840 * Other internal cleanups in Java bindings. Performance still bad :/
841 Ruby and Lua Bindings: create them
842 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
843 * That's new and great, you should try them out.
844 Same functionalities than Java bindings, only even less polished
846 * Kill the useless "rate" argument of SD_task_get_execution_time()
847 Everyone used to provide -1 as a value, it was not used, and the
848 semantic of a possible use wasn't even clear.
849 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
850 either as comm costs or compute costs to mean that there is no
851 such thing for that specific task.
852 * Add a SD_task_set_name() function
853 * Fix SD_task_unschedule() on typed tasks
854 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
855 * In DAX loader, accept useless 'level' attributes to <job> since
856 LIGO DAGs have them (seem to be to ease graphical representation).
858 * Add an example masterslave_mailbox.c using send/receive and not
859 the deprecated put/get interface.
860 * Kill the MSG_paje_output() function. It's a noop since 2 years.
861 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
863 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
864 (declare MSG_USE_DEPRECATED to still have the old name)
865 * Add a MSG_task_set_data() function
866 * About trace replay (see examples/msg/actions):
868 - Allow to work with splitted trace files for each process
869 Give the specific trace file as argument of each process,
870 and call MSG_action_trace_run(NULL)
871 You can still have one merged file for all processes.
872 - Fix implementation of collective operations
873 * Allow task_execute() on 0-sized tasks (closes #10063)
875 * This is the first release of SimGrid where SMPI is not considered
876 beta anymore (even if some corners should still be improved)
877 * Port over the new SIMIX_network submodule (internal refactoring)
878 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
879 * Implement more missing elements of the standard:
881 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
883 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
884 MPI_Scan() MPI_Get_processor_name()
885 - Added implementation of missing case for Alltoall (warning: it's
886 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
887 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
888 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
889 SMPI_MPI_Allgatherv()
891 - MPI_Waitsome() was broken
892 - Allow relative includes in smpicc
893 - Command line cfg argument 'reference_speed' was ignored...
894 - Some functions did not properly lead to auto-benching of user code
895 - smpicc passes -O2 by default (just like openmpi one)
897 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
898 * Bug fixes about timeouts during communications
899 * add SIMIX_message_sizes_output() as a pimple to write to file the
900 amount of messages per size. Use gnuplot to get histogram.
901 Pimple because that's the only user-visible function of simix,
902 defined directly in xbt.h (irk, sorry)
904 - Add a SIMIX_sem_get_capacity() function
905 - Fix interactions with processe resume/suspende
906 - release_forever() was stupidly broken
907 - Fix SIMIX_display_process_status() for processes in a semaphore
908 - Make SIMIX_sem_block_onto() user-visible
909 * Refactoring context stuff:
910 - Use pseudo-OOP for better modularity
911 - reimplement SIMIX_process_kill() without process_schedule() so
912 that the latter can take as invariant that it is called from
914 - Merge context_start into context_new for sake of simplicity
916 * Add a Vivaldi network model, coded live during SUD'10 ;)
917 * Rename configuration variables to start a hierarchy:
918 o cpu_model -> cpu/model
919 o network_model -> network/model
920 o workstation_model -> workstation/model
921 * New configuration variables:
922 o network/bandwidth_factor: correction to bandwith
923 o network/latency_factor: correction to latency
924 o netwotk/weight_S: correction to the weight of competing streams
925 * Add a long description to the models, that users can see with such
926 argument on the command line: --cfg=cpu/model:help
927 * --help-models display the long description of all known models
929 * config: add the ability to set a default value after registration
930 Does not override any previously set value (e.g. from cmd line)
931 * dict: allow to have integer key and data.
932 When so, you need to use the following functions
933 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
934 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
935 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
936 In contrary to regular dicts, the key is not malloced before copy.
937 Mixing scalar and regular elements in the same dict is not tested
939 * Allow to use xbt_dynar_shrink() to expend the dynar instead
940 Tracing for Visualization:
941 * SimGrid is now instrumented in order to generate a trace file for
942 visualization analysis: to use it, need to compile SimGrid with the
943 "tracing" option enabled, and instrument the program using SimGrid with
944 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
945 (among other functions).
946 * The instrumentation only traces the platform utilization for now
947 * Documentation to use the tracing functions and how to analyze the
948 traces with the Triva tool is written.
949 * More information about: SimGrid FAQ (in the section Tracing Simulations
952 * We moved to cmake as default build system. Autotools support will
953 be dropped soon. Check the FAQ for more info about how to use it.
954 * Greatly improved our cdash/ctest interactions
955 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
956 * Added memory checking tests with valgrind; lot of memleak fixing.
957 This may be the first release of simgrid with so few memory issues
958 * Added code coverage tests.
959 Our coverage is still improvable, but at least we see it on cdash.
961 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
963 SimGrid (3.3.4) stable; urgency=low
965 The "Desktop Grid needs love too" release (also called Xmas release).
968 * Major speedup in the maxmin system solving by using lazy evaluation
969 Instead of solving completely the maxmin system at each iteration,
970 only invalidate (and recompute) the modified parts.
971 This new feature is enabled in default models but you can try to
972 turn it on with "--cfg:maxmin-selective-update=1" for other models.
973 * Cas01 IMproved as default CPU model
974 This CPU model is the same Cas01 model, but it uses the
975 maxmin-selective-update flag and a heap structure to manage
976 actions on SURF kernel.
977 It reduces the complexity to find the next action to finish and,
978 consequently, it's faster than the old Cas01.
979 This is the new default CPU model (Cas01).
980 * Rename the old Cas01 model to Cas01_fullupdate
981 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
982 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
983 * CpuTI (CPU Trace Integration)
984 A new CPU model whose objective is simulate faster when using
985 availability trace files.
986 Instead of using a full featured, over engineered maxmin system for
987 CPU modeling, this model does the pre-integration of traces files
988 to calculate the amount of CPU power available, and so, executes
989 faster than the old CPU models.
990 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
991 * Use LV08 as default network model since it gives better accuracy
992 for small messages and shouldn't change things for big ones.
993 Use --cfg=network_model:CM02 to get the previous behavior.
996 ******************************************
997 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
998 ******************************************
999 * The new CPU model may changes simulations!
1000 The point is that events occurring at the exact same timestamp
1001 are not scheduled in the same order with the old and new
1002 version. This may be enough to completely change the execution
1003 of simulations in some cases.
1004 * The new network model will change simulations!
1005 This new model is more realistic than the previous one, so you
1006 should consider redoing your old experiments with this model.
1007 Sorry for the inconvenience.
1010 * Introduce the supernovae compilation mode
1011 When compiled that way, the whole SimGrid (or almost) is put in a
1012 single compilation unit and compiled in one shoot.
1013 This is to help gcc which has difficulties to inline stuff from one
1015 The speedup seem to be above 15%, althrough more tests are needed on
1016 amd64 to confirm that gain.
1019 * Port of MSG's mailbox on top of SIMIX network
1020 The put/get mechanism was greatly simplified on the way.
1023 * New SIMIX network module. Provides:
1024 - Mailbox: rendez-vous mecanism to find with who you want to speak
1025 - Synchronous send/recv: easier and hopefully faster since the
1026 logic is handled in the maestro process directly now
1027 - Asynchronous send/recv: you dreamt of it? It's here now
1028 Too bad that nobody cared enough to propagate the change to MSG.
1029 * Add semaphores as SIMIX synchronization mechanism.
1032 * new function SD_daxload(char*) to load a DAX file
1033 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
1034 * Introduce typed tasks. Specify its kind and cost at creation.
1035 At scheduling, just give where it should be placed, and the cost
1036 for each involved resource is automatically computed.
1037 Existing constructors so far (more to come of course):
1038 - SD_task_create_comm_e2e() for end-to-end communication
1039 - SD_task_create_comp_seq() for sequential computation
1040 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
1041 * new function SD_task_dump() for debuging display
1042 * new function SD_task_dotty(task,FILE*) writing to file the info
1043 about the task in dotty format
1044 * SD_task_dependency_exists() can now cope with having one of its
1045 arguments NULL. If so, it tests whether the other argument has any
1047 * Add getters on list of preceding/following tasks:
1048 SD_task_get_parents(task) and SD_task_get_children(task)
1049 * Add getters on amount of workstations and list:
1050 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
1051 * Add getter on task kind: SD_task_get_kind(task)
1052 * Update the start_time and finish_time of tasks on completion/failure
1053 * Bugfix: Remove task from state swags when destroyed
1056 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
1059 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
1060 dynar with one separate thread per value of the dynar.
1061 * Change the prototype of xbt_thread_create(), sorry.
1062 Added a boolean parameter indicating whether we want to join this
1063 thread (used in SG only for now)
1064 * Implement xbt_thread_join and xbt_thread_yield in SG also.
1067 * GTNetS wrappers should now be usable again (and betterly tested too)
1068 * Fix a major regression from 3.2 where the timeout provided to
1069 MSG_task_put_with_timeout() was used as absolute time before which
1070 the comm should be done.
1071 * Start to fix the <cluster> tag.
1072 - Internal links should be good now (beside of the loopback, which
1073 use the private link instead)
1074 - paths to the external world is still rather broken
1075 - the <route:multi> tag is just broken. Actually that's brain-dead.
1076 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
1077 to make it less stupid
1078 ** Check your platform with teshsuite/simdag/platforms/flatifier **
1079 * Fix a source-level compatibility glitch from 3.2: after defining
1080 MSG_USE_DEPRECATED, you can use the old name
1081 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
1082 * Allow to compile from the SVN with automake 1.11
1083 * Fix some problems when using the "start_time" tag in deployment XMLs.
1084 * Fix #8569: XBT/synchro.h has redundant declarations
1085 * Fix #8563: MSG return values and exceptions
1086 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
1087 * Integrate patch #8636: Obey DESTDIR when installing documentation.
1088 Thanks to Robson Peixoto.
1089 * Fix a vicious bug in dictionaries inducing that some elements were
1090 not freed on xbt_dict_free()
1092 Portability report of this version:
1093 * Main portability targets:
1094 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
1095 on (amd64/i386/ia64)
1096 - mac leopard on i386
1097 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
1098 but nothing critical.
1099 * Other platforms: windows, AIX and others were not tested for this release
1101 Timing report of this version:
1102 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
1103 scenario parameters). From 8h to a few seconds in desktop grid settings.
1104 * Supernovae brings about 25% speedup on i386.
1106 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
1108 SimGrid (3.3.3) stable; urgency=low
1110 The "Need for Speed" release.
1112 The timings done to validate the 3.3.2 were faulty.
1113 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
1115 The problem was a conversion from a manually handled vector to
1116 xbt_dynar_t on the critical path.
1117 xbt_dynar_foreach calls functions, inducing stack management crap.
1119 We inlined these functions and xbt_dynar_foreach is now breath taking.
1120 We also inlined xbt_swag_belong on the way.
1122 Here are some approximate speedup measurements (on master/slaves
1123 simulations lasting between 10s and 20s each):
1124 3.3.1 -> 3.3.2: about same performance
1125 3.3.2 -> 3.3.3: 40% speedup
1126 3.3.1 -> 3.3.3: 40% speedup
1127 3.3.1 with inline patch -> 3.3.3: 30% speedup
1129 Our reading is that the refactoring which occurred in 3.3.2 made us
1130 suffer much more from the xbt_dynar_foreach low performance, but
1131 once we solved this, this refactoring proved to be very performance
1132 effective. From the 40% speedup, somehow, 10% are due to the
1133 inlining and 30% to the refactoring.
1135 That's a pitty that gcc cannot inline functions placed in other files
1136 alone. We have to choose between:
1137 - break the encapsulation (by putting private data structures and
1138 accessors in headers files to help gcc)
1139 - live with low performance
1140 - switch to a decent compiler such as icc (not quite possible).
1142 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
1144 SimGrid (3.3.2) stable; urgency=low
1146 The "Simplicity does not preceed complexity, but follows it" release.
1148 The main contributors of this release were (lexical order):
1149 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
1152 * Extract the routing logic into its own object.
1153 (was dupplicated in network.c and workstation_LV07.c;
1154 Allows to implement other ways of storing that info)
1155 => kill now useless network_card concept
1156 - Use dynar to represent routes (instead of void** + int*)
1157 - kill link_set (use surf_network_model->resource_set instead)
1158 - Add a command-line option to choose the routing schema to use
1159 - Add three new models:
1160 * Floyd (shortest path computed at initialization)
1161 * Dijikstra (shortest path recomputed all the time)
1162 * Cached Dijikstra (shortest path computed on need)
1163 All these models where contributed by Silas De Munck, and are
1164 described in his ICCS09 paper.
1166 * Simplify model declaration
1167 (less redirections, less function to write when defining a model)
1168 - Factorize stuff between models:
1171 surf_model_resource_set(model)
1172 surf_model_resource_by_name(model, name)
1173 - Unify the types of models in s_surf_model_t (using an union)
1174 - Embeed fields of common_public directly into s_surf_model_t
1175 - Rename model methods:
1176 action_free ~> action_unref
1177 action_change_state ~> action_state_set
1178 action_get_state ~> action_state_get
1179 - Change model methods into functions :
1180 (model)->common_public->action_use ~> surf_action_ref
1182 * Implement a generic resource; use it as ancestor to specific ones
1183 (allows to kill duplicated code in models)
1184 Drawback: timer command don't need no name nor properties;
1185 workstation_CLM03 don't need no properties
1186 (but I guess we can live with those few bytes wasted)
1188 * Improve the action object model
1189 - implement a constructor avoiding dupplicated code about field
1190 initialization in generic_action part.
1192 * Kill the SDP model: it has an external dependency, is deprecated
1193 in flavor of modern lmm models, and didn't compile since a while
1196 * Relocation of the context module from XBT to SIMIX.
1197 (the context were decoupled from the simix processes, duplicating a lot of code)
1198 => a lot of code was factorized
1199 - less overhead is introduced during scheduling
1200 - simpler API for the context factory
1201 - the logic for process creation,destruction and manipulation was simplified
1202 * Simplification of the s_smx_process_t data structure.
1203 => accesing the simix level data associated to a process is faster now,
1204 and the code is a lot more readable.
1207 * Implement some more MPI primitives:
1208 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
1209 -implementation: Bcast: flat or 2-ary tree (default),
1210 Barrier: 4-ary tree,
1212 Allreduce: Reduce then Bcast
1213 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
1214 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
1215 Alltoallv: flat tree, like ompi
1217 * Add support for optimized collectives (Bcast is now binomial by default)
1218 * Port smpirun and smpicc to OS X
1221 * Kill SD_link_get_properties: hard to maintain and makes very little sense
1222 Shout out if you used it.
1225 * Display the list of still queued messages in SG mode when existing
1229 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
1230 * Add xbt_graph_node_get_outedges() [Silas De Munck]
1231 * Add xbt_str_from_file(FILE*)
1232 * Add xbt_dict_get_key achieving a linear reverse search
1233 * Remove the context module
1235 Portability report of this version:
1236 * Main portability targets:
1237 - Linux(debian)/x86/context
1238 - Linux(debian)/x86/pthreads
1239 - Linux(debian)/amd64/context
1240 - Linux(debian)/amd64/pthreads
1241 On these, we still have the eratic breakages of gras/pmm and
1242 amok/saturate_sg reported in previous version. We still think
1243 that the tests are the cause of the fault, not the tested code.
1245 - Mac OSX Leopard/x86/context
1246 Still false negative in tesh autotesting.
1247 Smpi still fails, but this time because readlink does not accept -f
1248 Everything seems to work properly beside of that.
1251 - AIX version 5.3 (only tested contexts this time)
1252 Smpi still fails there because mktemp is not installed.
1253 Everything seems to work properly beside of that.
1255 I managed to compile it for the first time, but several breakages.
1256 Won't delay the release for this exotic platform.
1258 * Windows: it's still lagging behind. If you want to help, please
1261 Timing report of this version:
1262 This version seem to be more than 5% faster than 3.3.1 (on linux
1263 64bits with contextes). The gain is less than expected, we are
1264 investigating this for next release.
1266 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
1268 SimGrid (3.3.1) stable; urgency=low
1271 * Implement a --cfg-help to show existing configuration variables
1272 * Build chain do not require doxygen in maintainer mode
1275 * fix a bug on struct sizeof computation, which prevented the
1276 exchange of arrays of structs in some conditions
1277 - added a regression test about this in datadesc_usage
1278 * Allow the exchange of 0-long dynamic vectors.
1279 - for that, use -1 as indicator of dynamic size instead of 0
1280 - This implied to change any size from unsigned long to long,
1281 reducing a bit communication abilities, but I guess that with
1282 64bits being quite common, this is more than enough.
1283 - This also induce a protocol change, thus bumping network protocol
1284 version from 0 to 1 (if we have external users, we have to get
1285 clean on that point too ;)
1286 - added two regression tests about this in datadesc_usage
1287 * Be more verbose when propagating local exceptions
1288 This helps debugging.
1289 * Display the status of simulated processes when receiving SIGINT in
1293 * Allow to control the simulation from a trace file.
1294 New functions MSG_action_register() and MSG_action_trace_run()
1295 The first one allows to associate a function execution to each
1296 kind of action while the second one parses a trace file and
1297 triggers the corresponding actions within the system.
1298 For now, only a toy example is provided in examples/msg/actions
1299 * Add an exemple of process migration in examples/msg/migration
1300 * Fix a bug in task exchange which broke MSG_task_get_sender()
1301 Add a teshsuite regression test for that.
1302 [Bug: if MSG_task_get_sender() is called after sender exit,
1304 * Fix a bug which prevented suspend/resume to work properly
1305 * Display the status of simulated processes when receiving SIGINT
1306 This fixes a regression of v3.3. due to the introduction of SIMIX
1307 * Bug fixing in failure management:
1308 - trace could not start by a failure at time 0
1309 - failure during communications were not working
1312 * Add SIMIX_process_set_name() to change the name of the current
1313 process in the log messages.
1314 * Store smx_hosts in a dict since we only retrieve them by name
1315 * Move the configuration infrastructure to surf
1318 * Move the configuration infrastructure to surf
1321 * Massive internal cleanups:
1322 - Store internal structures on processes instead of hosts (allows
1323 to have more than one process per host, in addition of being more
1325 - Cleanup the initialization/finalization process
1326 - Kill a whole bunch of unneeded synchronization:
1327 processes run in exclusive manner within the simulator
1328 - Move queues from global tables to process data fields
1330 - now accept -platform and -hostfile arguments
1331 - Pass the right rank value to processes according to the hostfile
1332 * Compile the examples by default, and use them as regression tests
1333 * Implement MPI_Wtime()
1334 * Change the reference speed to a command line option
1337 * TCP_gamma can now be specified as command line option using
1338 --cfg=TCP_gamma:10000000.0
1339 * Change the --surf-path cmd line option into --cfg=path:
1342 * Also include strbuff from xbt.h public header
1343 * xbt_ex_display(): do not free the exception after displaying
1344 This allows to do more with the given exception afterward.
1345 Users should call xbt_ex_free() themselves.
1349 Portability report of this version:
1350 * Main portability targets:
1351 - Linux(debian)/x86/context
1352 - Linux(debian)/x86/pthreads
1353 - Linux(debian)/amd64/context
1354 - Linux(debian)/amd64/pthreads
1355 These targets fail about 1/10 of times on gras/pmm, but we believe
1356 that this is because of the test, not because of simgrid.
1357 amok/saturate_sg fails even more rarely, and the test may not be
1360 - Mac OSX Leopard/x86/context
1361 The test suite still spits tons of errors because some obscure
1362 force prevents us from removing the temporary directories
1363 arguing that they still contain some metadata I've never heard of.
1364 Smpi fails because seq is not installed.
1365 Everything seems to work properly beside of that.
1368 - AIX version 5.3 (both contexts and pthread)
1369 Smpi still fails there because mktemp is not installed.
1370 XML inclusions seems rosty on AIX.
1372 * Windows: it's still lagging behind. If you want to help, please
1375 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
1377 SimGrid (3.3) stable; urgency=high
1381 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
1382 [Malek Cherier & Mt]
1384 * Introduce the SIMIX module: factorize code between MSG and GRAS.
1387 Until now, GRAS were using MSG as an interface to SURF. It was
1388 quite difficult because both interface have several differences
1389 (MSG channels vs GRAS sockets were the most notable point).
1391 This also opens the gate to SMPI (which should occur soon) and speed
1392 up simulations by to 40% (even if it were not the main goal).
1394 **************************************
1395 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
1396 **************************************
1397 The point is that events occuring at the exact same timestamp are
1398 not scheduled in the same order with the old and new version. This
1399 may be enough to completely change the execution of simulations in
1400 some cases. Sorry for the inconvenience.
1402 * Cleanup and upgrade the XML format to push further scalability
1403 issues (check http://hal.inria.fr/inria-00256883/ for more info)
1405 * Improve the testing infrastructure with tesh. Now a very large part of
1406 the code is tested not only by being run but also by checking that the
1407 output match an expected output [Mt].
1409 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
1410 is really less memory-demanding, which should allow you to use
1411 larger files in SimGrid [AL].
1413 * Inform valgrind about our contextes, so that it becomes usable
1414 with the default (and more effecient) version of SimGrid
1415 [contributed by Sékou Diakite, many thanks]
1418 * Introduce a listener thread in charge of receiving incoming
1419 messages from the network. It allows to overlap communication and
1420 computation but most notably, it removes some stupid deadlocks due
1421 to the fact that so far, a process could not send and receive at
1422 the same time. This made most non trivial communication schema
1424 * Convert the PIDs from long int to int to match the MSG ones (and
1425 linux ones too) [Mt]
1426 * New function: gras_agent_spawn() to launch a new process on
1427 current host. Only working in simulation for now. [Mt]
1428 * New function: gras_os_hostport() returning a constant form (ie,
1429 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
1432 * Make the backtrace of exceptions more human readable [Mt]
1433 * New module: xbt/str [Mt]
1434 a ton of string utility functions (split, join, printf to a newly
1435 allocated buffer, trim, etc)
1436 * New module: xbt/hash [Mt]
1437 SHA1 hashing algorithm (more to come if needed)
1438 * New module: xbt/synchro [Mt]
1439 synchronization tools (mutex and conditions) working the same way
1440 in simulation and in real life (mainly useful for GRAS, but not
1442 * New module: xbt/queue [Mt]
1443 classical producer/consumer synchronization scheme
1444 * xbt_dynar_new_sync() creates a synchronized dynar. All access
1445 (using the classical functions will get serialized) [Mt]
1446 * Make dictionary internal table dynamic. No need to specify its size
1447 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
1449 * Make sure the log channels are organized as a tree under windows
1450 (because of ANSI C compatibility issue, any channel were child of
1451 root directly) [Mt].
1454 * Cleaned many thing in surf and fixed a few bugs [AL].
1455 * Add a nice command line configuration mechanism to compose models [AL].
1456 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
1457 the previous one (KCCFLN05). It relies on something that looks like
1458 a max-min sharing mechanism but cannot be written as such. A new solver
1459 was thus designed [AL].
1460 * Add a new solver to lmm. Based on Lagrange optimization and
1461 gradient-based descent, it enables to efficiently maximise systems s.a
1463 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
1465 This solver enables to propose two new network models for TCP Reno and
1466 TCP Vegas based on Low's work. These models still need to be fully
1467 tested though [Pedro Velho].
1470 * Bug fix in SD_simulate. Now the time bound given as argument is
1472 * Use the new parallel task model (ptask_L07) as default.
1473 * Use the SURF command line configuration mechanism.
1474 * 0-size tasks (for synchronization) should now work.
1476 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
1478 SimGrid (3.2) stable; urgency=high
1482 We still experience issues on this platform, but we believe that at
1483 least MSG is usable.
1485 GRAS API BREAKAGE (for simplification purpose, sorry):
1486 * the gras_msgtype_by_name is not used anymore. Instead of
1487 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
1488 you can write (and must)
1489 gras_msg_send(toserver, "request", &request);
1490 - If you still want to pass a gras_msgtype_t to the function (to cache
1491 the type and avoid the lookup time), use the gras_msg_send_() variant.
1492 - Impacted functions:
1493 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
1494 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
1495 * The callbacks are now expected to return 0 when everything went well
1496 (just like the main() function)
1498 GRAS new features and improvements:
1499 * New module mecanism where user code can use per process globals [Mt]
1500 This is similar to gras_userdata_*() functions, but for libraries. It
1501 factorize some code developped over and over in the examples and AMOK.
1502 It has still to be documented and used (only amok/peermanagement is
1504 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
1505 loss when they were small enough to fit into the buffer and sent quickly
1506 enough so that they can all get received in one shoot.
1507 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
1508 if not found. Use the *_or_null() variant for the old semantic.
1509 * In gras_msg_handle, do not discard messages without callback.
1510 They are probably messages to be explicitly awaited later (ie, proofs of
1511 mis-synchronization in userland since they are sent before being awaited)
1512 No big deal usually.
1513 * gras_socket_meas_send/recv: semantic changed!
1514 The numerical arguments used to be (1) the total amount of data to send
1515 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
1516 messages. This was need for the fool willing to send more than MAXINT
1517 bytes on quite fat pipes.
1520 * Do really rename the hostmanagement module to peermanagement. [Mt]
1521 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
1522 but this is rather new and this was documented in the module
1523 documentation (poor excuses, I admit)
1524 * Bandwidth measurement semantic changed! This follows the changes to
1525 gras_socket_meas_send/recv explained above.
1528 * A sequential mode has been added to the workstations. When a workstation
1529 is in sequential mode, it can execute only one task, and the other tasks
1530 are waiting in a FIFO. [Christophe Thiery]
1533 * The KCCFLN05 workstation model now handles parallel tasks. It is the
1534 model for SIMDAG. [Christophe Thiery]
1535 * Bug fix in the maxmin solver: Some values were close to 0 instead of
1536 equal to 0, which caused some bad behaviors in
1537 saturated_constraint_set_update. I now use a threshold mechanism like in
1541 * When running manually src/testall, you select specific units [Mt]
1542 testall is the result of our cunit mecanism, and should replace all
1543 the scripty thingy around since bash don't run easily on billware.
1545 * A mallocator system has been added. [Christophe Thiery]
1546 Mallocators allow you to recycle your unused objects instead of freeing them
1547 and allocating new ones.
1549 Documentation update:
1550 * FAQ reworking + New FAQs:
1551 - "Valgrind spits tons of errors!" [Mt]
1552 - "How to repport bugs" [Mt]
1553 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
1554 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
1555 - Communication time measurement within MSG [AL]
1556 - I experience weird communication times when I change the latency [AL]
1557 * GRAS tutorial [Mt]
1559 - an introduction to the framework and to the used communication model
1560 - an initiatic tour introducing the most proheminent features:
1562 . Lesson 0: Installing GRAS
1563 . Lesson 1: Setting up your own project
1564 o Part 2: Message passing
1565 . Lesson 2: Exchanging simple messages
1566 . Lesson 3: Passing arguments to the processes (in SG)
1567 . Lesson 4: Attaching callbacks to messages
1568 . Lesson 5: Using globals in processes
1569 . Lesson 6: Logging informations properly
1570 . Lesson 7: Using internal timers
1571 . Lesson 8: Handling errors through exceptions
1572 . Lesson 9: Exchanging simple data
1573 . Lesson 10: Remote Procedure Calling (RPC)
1574 . Lesson 11: Explicitely waiting for messages
1575 . Recapping of message passing features in GRAS
1576 - A HOWTO section containing:
1577 o HOWTO design a GRAS application
1578 More are due, of course. They will come latter. In the meanwhile, you can
1579 check the examples which are still here.
1581 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
1583 SimGrid (3.1) stable; urgency=high
1587 There was a stack corruption somewhere, visible only when optimizing
1588 with these versions. [Vince]
1591 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
1592 module that enabled to play with Directed Acyclic Graphs. It is built
1593 directly on top of SURF and provides an API rather close to the old
1594 SG. Some old codes using SG are currently under rewrite to check that
1595 all needful functions are provided. [Christophe Thiery]
1598 * Complete rewrite of the KCCFLN05 workstation model. It is now an
1599 extension of the classical CLM03 model that gracefully handles
1600 failures. This is now the default model for MSG and GRAS. It doesn't
1601 handle parallel tasks yet though. [AL]
1602 * Bug fix: Weights were not correctly set in the network part.
1603 WARNING: This may have resulted in incorrect results with simulations
1604 where there are more than one flow on a given link. [AL]
1607 * After a (long ?) discussion on simgrid-devel, we have decided that the
1608 convention we had on units was stupid. That is why it has been decided
1609 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
1610 WARNING : This means that all previous platform files will not work as
1611 such with this version! A warning is issued to ask users to update
1613 A conversion script can be found in the contrib module of the CVS, under
1614 the name contrib/platform_generation/surfxml_update.pl [MQ]
1617 * Bug fix: Processes were started in reverse order, wrt deployment file.
1618 WARNING: if your code relies on this bug, please fix it. [AL]
1619 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
1620 being executed on two different locations. [AL]
1621 * Bug fix: Failures are now better supported thanks to Derrick's tests
1622 (there was many failure situations I hadn't thought of and that weren't
1623 correctly handled). [AL]
1624 * New function: MSG_host_is_avail indicates you whether a given m_host_t
1628 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
1629 Exception occurring on server-side are propagated back to client (!).
1631 API CHANGE: the callback changed their prototype. Change:
1632 int my_handler(gras_socket_t expeditor, void *payload_data) {
1634 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
1635 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
1637 * New! function: gras_msg_handleall to deal with all messages arriving
1638 within a given period.
1639 * New! function: gras_socket_server_range to get a server socket in a
1640 range of port numbers (ease to avoid port number conflicts) [MQ]
1641 * New! gras processes display their backtrace when they get a SIGUSR1
1642 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
1643 Sweet to debug RL processes [MQ]
1647 - Do not force experiment sizes to be expressed in kb, or it becomes
1648 impossible to measure the latency this way (needs one byte-long tests)
1649 WARNING: this changes the amok_bw_* function semantic. [MQ]
1650 - Implements the link saturation stuff. [MQ]
1651 * Peer management module:
1652 New! module factorizing code that we wrote over and over [MQ].
1655 * New module: cunit (my jUnit implementation in ansi C) [MQ]
1656 - Test units are placed directly into the library code, they get extracted
1657 automatically and placed into the src/testall binary.
1658 - Convert most of the XBT tests to this system.
1659 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
1660 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
1661 live in the same C code. This required to change a little bit the API
1662 of surfxml parsing but shouldn't be an issue for end-users. [AL]
1663 * New module: sparse graph structure with basic algorithms (this is work
1664 in progress and the API is not considered to be frozen yet). [AL]
1665 * Display more information on backtraces: source line & function names are
1666 now displayed just like valgrind does (rely on addr2line tool) [MQ]
1667 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
1668 * Reworked a little bit some #include statements to load only required
1669 headers. Some user code that relied on SimGrid to include stdlib or
1670 stdio may need to include it by themselves. [AL]
1671 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
1673 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
1674 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
1675 but I guess that almost nobody used those parts. [MQ]
1677 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
1679 SimGrid (3.0.1) stable; urgency=low
1682 * Unfortunately, I had missed 5 misnamed functions:
1683 xbt_fifo_item_t xbt_fifo_newitem(void);
1684 void xbt_fifo_freeitem(xbt_fifo_item_t);
1685 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
1686 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
1687 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
1688 They're now deprecated. Please use their new versions:
1689 xbt_fifo_item_t xbt_fifo_new_item(void);
1690 void xbt_fifo_free_item(xbt_fifo_item_t);
1691 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
1692 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
1693 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
1695 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
1696 * Documentation: xbt_log module unmercifully reworked [MQ]
1697 * Bugfix: there was a problem with the ending of contexts with
1698 the pthread backend. It caused some weird deadlock or behavior
1699 depending on the pthread implementation. [AL]
1700 * Bugfix: get the exceptions raised in the simulator repport where
1701 and why they come from when they are not catched in time [AL, MQ]
1704 * Bugfix: Do repport the error when two non-connected hosts try to
1705 exchange data (Thanks to Flavien for stumbling into this one) [AL]
1708 * Add additionnal checkings on communications. Assert that two
1709 communicating hosts are connected by a set of links... [AL]
1712 * Add additionnal checkings on channel values in communication [AL]
1713 * New: MSG_task_get_source to see on which host a task was generated [HC]
1714 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
1715 the number of tasks waiting to be received on channel and sent
1717 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
1718 waits for the first task coming from a given host.. [AL]
1720 GRAS new functionnalities: [MQ]
1721 * Enhance the parsing macro to allow the size of multidimentional objects
1722 to be given thru annotations.
1723 * New example (and documentation): Matrix Multiplication a la RPC
1724 (as when I was young!) and fix a bunch of bugs found on the way.
1726 GRAS performance improvements: [MQ]
1728 * Reduce the amount of cbps creation/destruction by making it static to
1729 datadesc_send/recv() and using a (newly created) cbps_reset (based on
1732 * Change libdata to a set so that we can search for stuff by ID (and thus
1733 reduce the insane amount of dict lookups)
1736 * Actually implement gras_datadesc_copy() so that we don't have to mimick
1737 RL communication on top of SG since it's so uneffective.
1738 It may also be used for inter-thread communication in RL, one day.
1739 * Use gras_datadesc_copy() to exchange messages on top of SG
1741 - improve message exchange performance on top of SG
1742 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
1743 * Don't exchange on the network the size of the used part of buffer,
1744 instead, specify the possible buffer size to read().
1746 - reduces the amount of read/write calls (one pair per exchange)
1747 - reduces the amount of exchanged data (the size)
1748 - allows to retrieve all arrived data on receiver side, if we don't need
1749 it right now (subsequent read will peek the buffer)
1750 - allows the receiver to proceed with the begining of the stream before
1751 everything is arrived
1752 - make it possible to build an iov transport (using readv/writev)
1754 - take care of the data with non-stable storage (like stacked data),
1756 * If possible, TCP send uses vector I/O (when writev() is here)
1757 - Don't use it for receive since we send data sizes and data on the
1758 same stream, so we wouldn't be able to chain large amount of chunks
1759 before having to flush the stuff to read the size.
1760 * Rework the transport plugin mecanism to simplify it and reduce the
1761 amount of pointer dereferencement when searching for the right function
1764 * I guess that now, we do almost as few system calls as possible while
1765 doing as few data copy as possible.
1767 To improve it further, we could try to send all the sizes first and then
1768 all the data (to use iov on receiving size), but it's only a partial
1769 solution: when you have 2 dimensional data, the sizes of the second
1770 dimension is data of the first dimension, so you need 3 streams.
1772 I'm not sure the potential performance gains justify the coding burden.
1774 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
1776 SimGrid (3.00) stable; urgency=high
1779 * New! Give the possibility to hijack the surf parser and thus bypass
1780 MSG_create_environment and MSG_launch_application. Have a look at
1781 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
1783 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
1785 SimGrid (2.96) unstable; urgency=low
1790 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
1791 This deprecates the xbt_error_t mecanisms.
1792 It modifies (simplifies) all XBT and GRAS API.
1793 MSG API keeps unchanged (exceptions raised by XBT are catched from
1794 within MSG and masked with existing error handling facilities)
1797 * New! Add a FATPIPE model. [AL]
1798 * New! Add a parallel task model. [AL]
1799 * New! Add automatically a loopback interface (in the default
1800 network model) if none was precised.
1803 * Bugfix: MSG_process_resume now works with the current running process.
1805 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
1806 * Modification of MSG_task_get_compute_duration. Once a task has been
1807 processed, the value returned by this function is now equal to 0. [AL]
1808 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
1809 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
1810 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
1811 of a m_task. For now, MSG_task_cancel only works with computation
1813 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
1814 of the processor (in Mflop/s) regardless of the current load on the
1816 * API Change: use proper naming convention for MSG_getClock and
1817 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
1819 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
1820 This function changes the priority of a computation task. This priority
1821 doesn't affect the transfer rate. A priority of 2 will make a task
1822 receive two times more cpu power than the other ones. This function
1823 has been added to suit the needs of Nguyen The Loc and hasn't been that
1824 much tested yet. So if it fails, please report it and send me your code.
1826 * API Change: removed all functions and types that were marked "deprecated"
1827 since many months. Renamed MSG_global_init_args to MSG_global_init.
1829 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
1831 SimGrid (2.95) unstable; urgency=low
1834 * Steal some nice code to GNU pth to fix context detection and usage [AL]
1835 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
1836 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
1839 * Bugfix: Allow absolute paths for platform description files [MQ]
1840 * Bugfix: do free the variables after use. Leads to drastic performance
1842 * Implement max_duration (ie, timeouts) on resources [AL]
1845 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
1847 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
1848 the needed support (timeouts) [AL]
1851 * Implement measurement sockets. You can now get the bandwidth between two
1852 hosts thanks to AMOK (see below). [MQ]
1853 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
1854 dynar over the network (yeah) [MQ]
1855 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
1856 * simple/static token-ring example. [Alexandre Colucci and MQ]
1857 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
1858 in place before [MQ]
1861 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
1862 type parsing. "short" and "long" modifiers were also ignored; other
1863 modifier (such as reference level) are still ignored. [MQ]
1864 * Embeed the buffer size within the buffer itself on SG. [MQ]
1865 That way, send() are atomic and cannot get intermixed anymore (at least
1866 the ones which are less than 100k; bigger messages still have the issue)
1867 * Array size pushed by the field, not by the field type (or each
1868 and every long int will push stuff to the cbps) [MQ]
1869 * use select() to sleep since it allows to portably sleep less than one
1872 GRAS (minor cleanups)
1873 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
1876 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
1877 * type category 'ignored' killed as it was never used and were difficult
1879 * whether a type can cycle or not is now a flag, leaving room for more
1880 flags (as "ignored", if we feel the need one day ;)
1881 * Rename raw sockets to measurement sockets since "raw" has another
1882 meaning in networking community.
1885 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
1886 and offers features not belonging to GRAS but that most applications
1887 need. One day, it may be a set of plugins loadable at runtime.
1888 * New module: bandwidth
1889 bandwidth measurement between arbitrary nodes running this module. [MQ]
1891 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
1893 SimGrid (2.94) unstable; urgency=low
1895 The first beta release of SimGrid 3 !
1899 * Update the main page and the FAQ. Adding references to gforge.
1902 * Add a gras_os_getpid function.
1905 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
1906 * Extend the logs so that they also print PID, hostname, date, ... if
1908 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
1909 and kill the old version which were in testsuite/
1910 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
1914 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
1915 for users. Instead, each programming environment (GRAS, MSG,...) use it
1916 when needed to provide such a feature to users.
1917 Don't shortcut the mecanism or you will also shortcut the virtualization
1918 you need on the simulator.
1922 * Cleanups in configury with regard to compile optimization/warning flags.
1923 Also add -fno-loop-optimize to any powerpc since it's the optimization
1924 killing gcc (< 3.4.0).
1925 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
1926 needed by MSG examples complications
1927 * Borrow configury beautifications from PHP
1930 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
1931 warning (thanks loris for stumbling into this one).
1932 * Bugfix: stop loading private headers (gras_config.h) from the public
1936 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
1937 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
1938 RL would imply a DNS resolver, which is *hard* to do in a portable way
1939 (and therefore delayed).
1940 * Implement a real timer mecanism and use it in timing macros. This allows
1941 to avoid rounding errors and get a 0.000005 sec precision in timing
1942 macros. While I was at it, various cleanups:
1943 - allow to declare more than one timed section per file (fix a stupid bug)
1944 - move some private declaration to the right place
1945 - merge conditional execution and timing macros into emulation module
1946 - document the module
1947 - make sure the module cleanups its mess on gras_exit
1948 * Documentation improvements:
1949 - (new) how to compile applications using GRAS
1950 - (new) emulation support (timing macros)
1952 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
1954 SimGrid (2.93) unstable; urgency=low
1956 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
1959 - Use Paje properly where used. Still to be sanitized properly.
1960 - Portability fix: Add an implementation of the contexts using pthread
1964 - Add xbt_procname(): returns the name of the current process.
1965 Use it to show the current process's name in all logging.
1967 - fix detection of older flex version and the reaction, since we do
1968 depend on modern ones (we use lex_destroy)
1969 - Better separation of SG and RL in the libs: remove all simulation code
1970 from libgras. As a result, this lib is now only 200k when stripped.
1971 Some of the xbt modules may also be duplicated (two sets and such) and
1972 should be cleaned/killed before SG3.
1973 - Insist on using xlC on AIX because of weird problems involving gcc there.
1974 - Cleanup the make remote stuff. This is now done by scripts
1975 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
1976 mainly for our private use, but we're working on changing them to user
1979 - Bugfix: flush the socket on close only if there is some *output*.
1980 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
1982 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
1985 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
1987 SimGrid (2.92) unstable; urgency=low
1989 Alpha 3 on the path to SimGrid 3
1993 - New! First try of benchmarking macros.
1994 - New! First try so that gras_stub_generator generate deployment and
1995 remote compilation helpers.
1997 - Bugfix: Initialization fix in msg_test.
2001 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
2003 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
2005 - API Change: gras_os_sleep to take the amount of seconds as a double.
2006 Accepting an int was error prone since it was the only location where
2007 seconds were coded as such. It leaded to damn rounding errors.
2008 - Bugfix: Hard to belive that timers ever worked before this.
2010 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
2012 SimGrid (2.91) unstable; urgency=low
2014 Alpha 2 on the path to SimGrid 3
2018 - Bug fix in the lmm_solver.
2020 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
2021 through the function MSG_paje_output.
2022 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
2023 - It is possible to bound the rate of a communication in MSG with
2024 MSG_task_put_bounded() (was already in the previous version but I had forgotten
2025 to write it in the changelog).
2026 - Bug fix to let GRAS run on top of MSG until we move it directly on top
2031 - Various cleanups to the autotools stuff
2032 - Begin to move Gras examples to examples/gras/
2033 - Let make distcheck work again (yeah!)
2035 - documentation overhauled using doxygen.
2036 gtk-doc-tools is dead in SimGrid now.
2037 - Automatically extract all existing logging categories, and add the list
2038 to the documentation (long standing one, to say the less)
2040 - Cleanup the known architecture table. Reorder the entries to group what
2041 should be, and use a more consistent naming scheme.
2042 (some of the test dataset are still to be regenerated)
2043 - New! Allow library to register globals on each process just as userdata
2045 This is implemented using a xbt_dict and not a xbt_set, so we loose the
2046 lookup time (for now).
2047 Use it in msg and trp.
2048 This cleans a lot the internals and helps enforcing privacy of the
2049 headers between the gras components.
2050 - New! Add a timer mechanism, not unlike cron(8) and at(1).
2051 - Bugfix: gras_os_time was delirious in RL.
2052 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
2054 - Reenable GRAS now that it works.
2056 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
2058 SimGrid (2.90) unstable; urgency=low
2060 Alpha 1 on the path to SimGrid 3
2062 * It is a long time since the last release of SimGrid. I'm sorry about
2063 that but as I had told you, I was rewriting a lot of things. I apologize
2064 to those who had been reporting bugs to me and that I had not answered.
2065 If your bug is still in the new version, please tell me. Here is a
2066 summary of the main changes.
2068 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
2069 lead by Martin Quinson. As a consequence SimGrid gains a lot in
2070 portability, speed, and a lot more but you'll figure it out later.
2071 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
2072 I wanted to release the new MSG as soon as possible and I have
2073 broken GRAS, which is the reason why, for now, only MSG is fully
2074 functional. A laconic description of these projects is available
2075 in the documentation.
2077 * REVOLUTION 2: I have removed SG and I am now using a new simulation
2078 kernel optimized for our needs (called SURF but only the developers
2079 should use it). Hence, MSG is now roughly 30 times faster and I think
2080 that by rewriting a little bit MSG, I could event speed it up a little
2081 bit more. Beside the gain in speed, it is also much easier to encode a
2082 new platform model with SURF than it was with SG. More to come...
2084 * REVOLUTION 3: I have tried to change a little as possible the API of
2085 MSG but a few things really had to disappear. The main differences
2086 with the previous version are :
2087 1) no more m_links_t and the corresponding functions. Platforms are
2088 directly read from a XML description and cannot be hard-coded
2089 anymore. The same format is used for application deployment
2090 description. The new format is described in the documentation.
2091 Have a look in tools/platform_generation. There is a tiny script
2092 that converts from the old platform format to the new one. Concerning
2093 the application deployment format, parsing the old one is tricky.
2094 I think most of you should however be able to convert your files. If
2095 it is really an issue, I can write a C code that does the conversion.
2097 2) the toolbox tbx does not exist anymore. We now have a library
2098 with much more data-structures but without the hash-tables (we have
2099 dictionaries that are much faster).
2101 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
2103 *****************************************************************************
2104 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
2105 * don't feel like converting the oldies. (Mt) *
2106 *****************************************************************************
2109 Version 2.90: "the long awaited one"
2110 - Finished rewriting and debugging MSG. Rewrote the documentation.
2111 - disable GRAS for now since it needs to be ported to the newest SG
2114 - Finish the port to windows (using mingw32 for cross-compile)
2117 - Main loop and datastructures of SURF. A cpu resource object is
2118 functional. Surf can thus be used to create cpu's with variable
2119 performance on which you can execute some actions.
2121 2004-11-15 Martin Quinson
2122 - Port to ARM. Simply added the alignment and size descriptions. Should
2123 work, but the ARM machines are so slow that I didn't had the opportunity
2124 to 'make check' over there yet.
2126 2004-11-15 Arnaud Legrand
2127 - Trace manager now written. It uses a heap structure and is therefore
2128 expected to be efficient. It may however be speeded up (particularly
2129 when many events occur at the same date) by using red and black
2130 trees. One day maybe...
2131 - Max-min linear system solver written. It uses a sparse matrix
2132 structure taking advantage of its expected use. Most operations are
2133 O(1) and free/calloc are called as few as possible. The computation of
2134 the minimum could however be improved by using a red and black tree
2137 2004-11-03 Arnaud Legrand
2138 - Rename every gras_* function that was in xbt/ to its xbt_
2140 - Add a heap and a doubly-linked list to xbt
2141 - Added a dichotomy to the dictionaries. make check works as well before
2142 so I assume that the patch is correct. I do not know however if things
2143 run effectively faster than before now. :)
2145 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
2146 SimGrid, and the version number is bumped to 2.x
2148 2004-10-29 Martin Quinson
2149 - Introduction of the remote errors.
2150 They are the result of a RMI/RPC on the remote machine.
2151 ErrCodes being scalar values, you can't get the host on which those
2152 errors did happen. Extending the error mechanism as in Gnome is possible.
2153 No idea yet whether it is a good idea.
2155 2004-10-28 Martin Quinson
2156 - Interface revolution: the Starred Structure Eradication.
2157 I used to do typedef struct {} toto_t; and then handle *toto_t.
2158 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
2159 - ???_t is a valid type (builded with typedef)
2160 - s_toto_t is a structure (access to fields with .)
2161 - s_toto is a structure needing 'struct' keyword to be used
2162 - e_toto_t is an enum
2163 - toto_t is an 'object' (struct*)
2165 typedef struct s_toto {} s_toto_t, *toto_t;
2166 typedef enum {} e_toto_t;
2167 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
2168 s_toto_t) is private.
2170 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
2171 so that it can set the variable to NULL. It was so for dicts and sets,
2172 it changed for dynars.
2174 - Fix a bunch of memleaks in dict_remove
2175 - Fix a bug in sg/server_socket opening: it failed all the time.
2177 2004-10-07 Martin Quinson
2178 - Speed up dynar lookup operation a bit.
2180 gras_dynar_get is dead.
2182 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
2183 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
2184 (which gives you the address of the stored data).
2186 gras_dynar_get_as is an helpful macro which allows you to retrieve a
2187 copy of the data using an affectation to do the job and not a memcpy.
2189 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
2190 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
2192 It does not really speedup the dynar test because they are
2193 setting elements all the time (and look them seldom). But the dict does
2194 far more lookup than setting.
2196 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
2198 2004-10-05 Martin Quinson
2199 - Allow to (en/dis)able the cycle detection at run time.
2201 Whether we should check for cycle or not is now a property of each
2202 datatype. When you think there may be some cycle, use datadesc_cycle_set.
2203 datadesc_cycle_unset allow to remove this property when previously set.
2205 Note that the cycle detection is off by default since it impacts the
2206 performance. Watch the data you feed GRAS with ;)
2208 This property is hereditary. Any element embedded in a structure having it
2209 set have it set for the time of this data exchange.
2211 You should set it both on sender and receiver side. If you don't set it on
2212 sender side, it will enter an endless loop. If you forget on receiver
2213 side, the cycles won't be recreated after communication.
2215 - Header reorganization.
2216 Kill gras_private.h, each submodule must load the headers it needs.
2218 2004-10-04 Martin Quinson
2219 - Interface revolution: do not try to survive to malloc failure.
2221 Now, gras_malloc and friends call gras_abort() on failure.
2222 As a conclusion, malloc_error is not a valid error anymore, and all
2223 functions for which it was the only gras_error_t return value are
2224 changed. They now return void, or there result directly.
2225 This simplify the API a lot.
2227 2004-09-29 Martin Quinson
2228 - Re-enable raw sockets.
2229 Created by gras_socket_{client,server}_ext;
2230 Used with gras_raw_{send,recv}
2233 It should allow to kill the last bits of gras first version soon.
2235 This is not completely satisfactory yet (duplicate code with
2236 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
2239 - Simplify transport plugin (internal) interface by not passing any
2240 argument to _server and _client, but embedding them in the socket
2243 2004-09-28 Martin Quinson
2244 - Finish the port to AIX.
2245 autoconf was my problem (segfault within the malloc replacement
2246 function. No idea why)
2248 2004-09-16 Martin Quinson
2249 - Fix some size_t madness on 64bit architectures.
2251 2004-09-08 Martin Quinson
2252 - Reduce the number of system headers loaded, overload some more system
2253 calls (such as malloc to cast the result of the system one, and work
2255 - Fix and reintroduce the config support
2257 2004-09-07 Martin Quinson
2258 - Source code reorganization to allow Arnaud to surf all over there.
2259 - Allow to document the logging categories.
2260 - Remove all uppercase from logging categories and useless cleanup in names.
2262 2004-08-18 Martin Quinson
2263 Version 0.6.2 (protocol not changed; API changed)
2264 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
2265 gras_error_t), and NULL when not found. Functions expecting a msgtype
2266 as argument (msg_wait; msg_send) deal with NULL argument by providing a
2267 hopefully usefull message.
2268 - Portability to prehistoric sparcs again
2270 2004-08-17 Martin Quinson
2271 Version 0.6.1 (protocol not changed; ABI not changed)
2272 - prealloc some buffers to speed things up
2274 2004-08-11 Martin Quinson
2275 Version 0.6 (protocol not changed; ABI expended)
2276 - The parsing macro can deal with the references, provided that you add
2277 the relevant annotations (using GRAS_ANNOTE(size,field_name))
2279 2004-08-09 Martin Quinson
2280 Version 0.5 (protocol not changed; ABI changed)
2281 - Allow to off turn the cycle detection code in data exchange at
2282 compilation time. It should be at run time, but I'm short of time (and
2283 the config stuff is still broken). That way, we keep dict out of the
2284 critical path, which is good because the performance is poor:
2285 - search not dichotomial yet
2286 - dynar give no way to access their content and memcpy everytime
2287 - In composed data description (struct, ref and so on), stop foolness of
2288 keeping the subtype's ID, but store the type itself. This keeps sets out
2289 of the critical path, which is good since they rely on dynar and
2290 dictionnaries. The only loose of that is that we cannot detect the
2291 redeclaration of a structure/union with another content (but I'm not sure
2292 the code detected well this error before anyway). We still can detect
2293 the redefinition discrepancy for the other types.
2294 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
2295 it breaks the code because of type-punning used all over the place).
2296 This breaks on all non-gcc architectures (for now).
2298 All those changes (plus the buffer of last time) allow me to gain 2 order
2299 of magnitude on cruel tests consisting of 800000 array of integers on two
2300 level of a hierarchical structure (200 secondes -> 4 secondes)
2303 - the selector of reference must now return the type it points to, not
2304 the ID of this type.
2306 2004-08-06 Martin Quinson
2307 Version 0.4 (protocol changed; ABI not changed)
2308 - Allow to pass --gras-log argument to processes in simulation mode. Really.
2309 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
2310 - Implement a buffer transport, and use it by default (it relies on tcp in
2311 real life and on sg in simulation).
2312 That's a bit hackish since I had a new field to the structure to store
2313 its data without interfering with the subtype ones. Inheritance
2314 is tricky in C. And that's a kind of reverse inheritance with one class
2315 derivating two classes. Or maybe a game with java interfaces. Anyway,
2316 that's damn hard in C (at least).
2317 Moreover, I got tired while trying to ensure plugin separation and
2318 genericity in SG mode. MSG wants me to do weird things, so let's go for
2319 cruel hacks (temporarily of course ;).
2320 See comment in transport_private.h:71
2321 - do not include all the _interface headers in private but in the files
2322 which really need them (to cut the compilation time when they are
2325 2004-07-26 Martin Quinson
2326 Version 0.3 (protocol not changed; ABI changed)
2327 - Major overhault of the datadesc interface to simplify it:
2328 - shorted the function names:
2329 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
2330 - add a trivial way to push/pop integers into the cbps without malloc.
2331 This allows to make really generic sub_type description, which simply
2332 pop their size of the stack.
2333 - add a function gras_datadesc_ref_pop_arr() which does what users want
2334 most of the time: Declare a dynamic array (which pops its size of the
2335 stack) and declare a reference to it. Poor name, but anyway.
2336 - kill the post-send callback, add a post-receive one
2338 2004-07-23 Martin Quinson
2339 Version 0.2 (protocol changed; ABI changed)
2340 - add some testing for cpbs in the test cases, and fix some more bugs.
2341 This invalidate again the little64 data file, since I cannot regenerate
2343 - remove an awfull optimization in the logging stuff, allowing me to:
2344 - understand it again
2345 - learn gcc how to check that the argument match the provided format
2346 - fix all errors revealed by gcc after that
2347 - internal keys of dict are not \0 terminated. Deal with it properly in
2348 loggings instead of segfaulting when the user want to see the logs :-/
2350 2004-07-22 Martin Quinson
2351 - Fix some stupid bug preventing cbps (callback postit) from working
2353 2004-07-21 Martin Quinson
2354 - Some documentation cleanups
2355 - remove the useless last argument of msgtype_declare
2356 - rename the Virtu functions to fit into the 'os' namespace
2357 - move headers src/include -> src/include/gras/ and stop fooling with
2358 gras -> . symbolic link
2359 - make distcheck is now successful
2361 2004-07-19 Martin Quinson
2363 - Build shared library also
2364 - Install html doc to the right location
2365 - stop removing maintainer files in make clean
2366 - build tests only on make check
2368 2004-07-13 Martin Quinson
2370 - No major issue in previous version => change versionning schema
2371 - Re-enable little64 convertion test now that Abdou kindly regenerated the
2372 corresponding dataset.
2374 2004-07-11 Martin Quinson
2376 - Get it working with any kind of structure (we can compute the padding
2377 bytes remotely for all the architectures I have access to)
2378 - Implement the structure parsing macro (still not quite robust/complete)
2379 - Improvement to the remote testing toysuite
2381 2004-07-10 Martin Quinson
2382 [autoconf mechanism]
2383 - get ride of a bunch of deprecated macros
2384 - actually run the test for two-compliment, not only compile it :-/
2385 - test whether the structures get packed (and bail out if yes. Damn.
2386 Alignment is a serious matter)
2387 - test whether the structures get compacted (but respecting the alignment
2388 constraints of each types)
2389 - test whether the array fields of structures can straddle alignment boundaries
2391 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
2392 (took me 2 hours to find that bug, looking at the wrong place)
2393 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
2394 before sending/receiving and are used to compute the offsets of fields
2395 - Given that padding size depend even on compiler options, keep track of
2396 alignment and aligned_size only for the current architecture. Not a big
2397 deal since we send structure fields one after the other (seems
2399 - Add the datastructure used for IEEE paper by the PBIO guys to the test
2400 program, let it work on linux/gcc/little32. portability todo.
2402 2004-07-08 Martin Quinson
2403 - import and improve remote compilation support from FAST
2404 - make sure make check works on half a dozen of machines out there
2406 2004-07-07 Martin Quinson
2407 Let's say it's version 0.0.3 ;)
2408 - Implement conversions (yuhu!)
2409 - Let it work on solaris (beside conversion, of course)
2410 - Stupid me, using rand() to generate the conversion datatests in not wise.
2412 2004-07-06 Martin Quinson
2413 - Let make dist work, since I'm gonna need it to compile on remote hosts
2414 - Let Tests/datadesc_usage write the architecture on which the file was
2415 generated as first byte.
2416 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
2417 architecture descriptions.
2418 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
2419 on those architectures.
2420 - Optimization: send/recv array of scalar in one shoot
2422 2004-07-05 Martin Quinson
2423 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
2425 - Plug a whole bunch of memleaks
2426 - each process now have to call gras_{init,exit}. One day, their log
2427 settings will be separated
2428 - Continue the code factorisation between SG, RL and common in Transport.
2430 2004-07-04 Martin Quinson
2432 - Redistribution between SG and RL.
2433 We wanna have to accept in SG, so move accepted related parts of RL in
2434 the common part. (more precisely, the dynar of all known sockets is no
2435 more a static in transport.c, but part of the process_data)
2437 [gras_stub_generator]
2438 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
2440 2004-07-03 Martin Quinson
2441 - Create a new log channel tbx containing dict, set, log, dynar (to shut
2442 them all up in one shot)
2444 - Fix the ugly case of reference to dynamic array.
2445 - New (semi-public) function gras_datadesc_size to allow the messaging
2446 layer to malloc the needed space for the buffer.
2448 - gras_socket_close now expect the socket to close (and not its address to
2449 put NULL in it after it). This is because the socket passed to handlers
2450 is one of their argument (=> not writable).
2452 - propagate the interface cleanup from last week in datadesc, ie remove a
2453 superfluous level of indirection. User pass adress of variable
2454 containing data (both when sending and receiving), and not of a variable
2455 being a pointer to the data. Let's say that I like it better ;)
2456 The price for that is constructs like "int msg=*(int*)payload" in
2457 handlers, but it's a fine price, IMHO.
2459 - Let it work in RL (yuhu)
2461 2004-06-21 Martin Quinson
2463 - porting SG plugin and SG select to new standards (works almost).
2464 - plug memleaks and fix bugs around.
2467 - cleanup the prototype of data recv and force users to specify when they
2468 want to handle references to objects. Test case working even for cycles.
2469 - plug memleaks. Valgrind is perfectly ok with this.
2471 2004-06-12 Martin Quinson
2473 - cleanup the separation between plugin and main code in plugin creation
2475 2004-06-11 Martin Quinson
2477 - Reput hook for raw sockets, needed for BW experiments
2478 - kill a few lines of dead code
2479 [Data description] Interface cleanup
2480 - gras_datadesc_by_name returns the searched type or NULL.
2481 That way, no variable is needed to use a type desc once, which makes
2483 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
2484 two parameters were strings (field name, type name), leading to
2486 [Dicos] Interface cleanup
2487 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
2488 This is consistant with the dynar API.
2490 2004-04-21 Martin Quinson
2492 - Porting to new standards.
2494 - interface cleanup.
2495 There is no bag anymore, no need to take extra provision to mask the
2496 pointers behind "ID".
2497 Better splitup of functions between files create/exchange/convert.
2498 This is still a bit artificial since convert and receive are so
2499 interleaved, but anyway.
2501 - add a queued message list to procdata (the ones not matching criteria
2503 - factorize some more code between SG and RL wrt procdata
2505 - use gras_exit in example to track memleaks
2506 - get rid of gs_example now that GS is properly integrated into gras
2507 - update run_test to integrate the latest tests (datadesc)
2509 - rename WARNINGn macros to WARNn since it prooved error-prone
2511 2004-04-19 Martin Quinson
2513 - register init/exit functions within gras module mechanism
2514 - send/receive function.
2515 Convertion is not implemented, but short-cutted if not needed.
2516 struct/array elements are sent one by one (instead of block-wise), but
2517 nobody really cares (yet). Get a prototype before optimizing.
2518 - tests (using a file socket) for DD send/receive on:
2519 - base types: int, float
2520 - array: fixed size, string (ie ref to dynamic string)
2521 - structure: homogeneous, heterogeneous
2522 - chained list, graph with cycle
2523 Believe it or not, valgrind is not too unhappy with the results. The
2524 cycle happily segfaults, but the others are ok. And I'm sick of pointers
2528 - Bugfix when using a filename explicitely (instead of '-')
2530 2004-04-09 Martin Quinson
2532 - factorize more code between RL and SG in socket creation
2533 - Complete the implementation and tests of:
2535 o file (only in RL, and mainly for debugging)
2537 I lost 3 days to design a portable address resolver, and then decided
2538 that the prototype mainly have to run on my box.
2539 Addressing portability too early may be like optimizing too early :-/
2541 - use gras_init in the Tests instead of the crappy parse_log_opt
2542 (the latter function is removed)
2543 [Conditional execution]
2544 - New functions: gras_if_RL/gras_if_SG (basic support for this)
2545 [Code reorganisation]
2546 - Get rid of libgrasutils.a since it makes more trouble than it solves.
2547 Build examples against the RL library, since there is no way to disable
2548 its creation for now.
2550 For information, the beginning of coding on GRAS was back in june
2551 2003. I guess that every line has been rewritten at least twice since