1 SimGrid (3.9) NOT RELEASED; urgency=low
4 * Now works on Windows too!
5 * Much more extensive test suite, from MPICH
8 * New function: MSG_process_get_number()
11 * kill synchronized dynars. We cannot think of a usecase where it's
12 really mandatory, and maintaining it was a pain in our codebase.
14 -- $date Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
16 SimGrid (3.8.1) stable; urgency=low
18 The "we are told that some people want to also *install* the simgrid
21 * Add missing file "tesh.1" to the archive.
23 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
25 SimGrid (3.8) stable; urgency=low
27 The Psssshiiiit release: SimGrid jumps into the Cloud.
30 * Add an experimental interface to manipulate VMs. They are mainly
31 process groups with very few intrinsic semantic, but they should
32 allow you to build the semantic you want easily.
33 * New function: MSG_host_set_property_value()
34 * New function: MSG_process_on_exit(). To clean memory in all cases.
35 * Bug fixes that made the host (and link) failures unusable.
36 * Add a way to auto-restart process when the host in which they are
37 executing comes back (ON_FAILURE="RESTART" on deployment file,
38 MSG_process_auto_restart_set).
39 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
40 please stop using the old ones, they are DEPRECATED.
42 * Deprecate functions MSG_global_init() / MSG_global_init_args()
43 Please use MSG_init() instead. (reducing the amount of entry
44 points in the library helps us).
45 * Make it impossible to link against the wrong version of the lib
46 * Deprecate MSG_clean(). No need to call it anymore.
47 * Function MSG_get_host_number() is not deprecated anymore.
50 * Split the doc into a user guide and a reference guide.
51 * Start a developper guide to help people hacking on SimGrid.
54 * Enable tracing by default. This modules rocks you should use it.
55 * Remove option custom_flags. Now use environment variables CFLAGS
57 * Use default cmake things to detect lua instead of home grown ones.
58 * New option "enable_mallocators" to disable mallocators, for debugging
59 purpose ("on" by default).
62 * Bug fixes around the resource failures: don't let the processes
63 survive the host they are running onto.
64 * Add an interface to auto-restart processes when the host in which they are
66 * Ensures that SIMIX_clean is called automatically. It's not part of
67 the public interface anymore (bindings should be updated).
70 * Bug fix for when SD_Simulate is called with a positive value: be careful
71 when comparing doubles. Sometimes they are different for non significant
73 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
74 parallel task whose initial work is distributed among host according
75 to the Amdahl's law. Such tasks are created with a parameter alpha
76 that corresponds to the non-parallelizable part of the computation.
77 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
78 between two sets of workstations assuming a 1D block distribution (each
79 workstation owns a similar share of data) on both sides.
81 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
82 Data redistribution will be automatically scheduled once parent and child
83 are both scheduled. The filling of computation_amount and
84 communication_amount structures is now done seamlessly thanks to the chosen
86 * New function SD_workstation_dump to display various information
87 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
88 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
89 bandwidth on the route onto which the task is scheduled and the amount of
91 To divide the nominal bandwidth by 2, the rate then has to be :
92 rate = bandwidth/(2*amount)
93 * Compute tasks that have failed can now be rescheduled and executed again
94 (from their beginning)
95 * Increasing source code coverage (src/simdag is now covered at 95.8%
99 * Re-implement time-independent trace replay using SMPI (at the
100 smpi_smp_* level) instead of MSG. This should replace
101 examples/msg/actions/actions.c
102 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
103 hindexed and structs)
104 * Implement the exchange of non-contiguous data.
105 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
106 * Correct behavior of smpi/sender_gap and set its default value to 0
107 * Add option to asynchronously send small messages to allow better
108 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
109 specifies the size in bytes under which messages will be asynchronously sent.
110 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
111 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
114 * New C interface to define a platform: XML is now optional.
115 For more info, please check include/simgrid/platf.h.
116 * New interface to define random platforms from the C:
117 For more info, please check include/simgrid/platf_generator.h and
118 examples/msg/masterslave/masterslave_platfgen.c
119 * Export a sg_cmdline dynar containing all the arguments we got from
123 * Two new tracing options for adding comments to trace file so you
124 can track your experiments (see --help-tracing for details).
125 * New option to generate a impoverished trace file (--cfg=tracing/basic:1)
126 * Adding the SimGrid version that generated the trace file as a comment.
127 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
128 * Fix to avoid key clashes on Paje links
129 * Other minor fixes related to the Paje specification
132 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
133 and renamed to xbt_str_hash() and xbt_str_hash_ext().
134 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
135 * Greatly improve the robustness of mmalloc to user errors (such as
136 using an area after freeing it, or freeing it twice)
138 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
140 SimGrid (3.7.1) stable; urgency=low
143 * Restore the prototype of MSG_process_create_with_environment() to
144 the pre-3.7 situation by removing the kill_time argument.
145 * Add a MSG_process_set_kill_time() function instead.
148 * Fix weird behaviors when dealing with parallel tasks.
151 * Simgrid is now built as a dll.
152 * Simgrid-java now works on Windows.
153 * Simgrid-Java is now included into Windows package.
156 * First pre-build package for MacOSX.
159 * Fix compilation when using MSG_USE_DEPRECATED.
160 * Fix some compilation issues on Macs and Windows.
161 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
162 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
164 We discovered that the Lua console is broken, but we are missing the
165 manpower to fix it right now. The problem existed in 3.7 too, so we
166 are not blocking the release for that. Sorry if you depended on this
167 feature, any help would be really welcome.
169 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
171 SimGrid (3.7) stable; urgency=low
173 The "spring cleanups (before the next Big Project kicks in)" release.
176 * We can specify the SMPI latency/bandwidth factor with command line
177 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
178 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
179 You can also use the "config tag" from platform file by adding this line
180 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
181 (see "example/platforms/tag_config.xml" to use "config tag").
182 Note that the command line supersedes the platform file configuration.
183 * Change the correction factors used in LMM model, according to
184 the latest experiments described in INRIA RR-7821.
185 Accuracy should be improved this way.
186 * Use the partial invalidation optimization by default for the
187 network too. Should produce the exact same results, only faster.
188 * Major cleanup in surf to merge models and split some optimization
189 mechanisms from the core of the models. As a result you can now
190 specify which model to use (e.g., --cfg=network/model:LV08
191 --cfg=cpu/model:Cas01) and which optimization mode to use
192 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
193 Incompatible combinations should err at initialization. See
194 --help-models for the list of all models and optimization modes.
195 * The CLM03 workstation model was dropped for simplicity because it
196 used the deprecated CM02 network model. Use default instead.
197 * Rename the TCP_gamma configuration option to network/TCP_gamma
198 * Rename the coordinates configuration option to
199 network/coordinates, and document it
200 * Use now crosstraffic keyword instead of the terribly misleading
201 fullduplex keyword. It is activated by default now in the current
202 default model, use --cfg=network/crosstraffic:0 to turn it off.
203 * Ongoing refactoring the model parsing to make XML files optional
204 See include/simgrid/platf.h for details (still to be completed)
207 * Major overhaul of the documentation. Almost instructive now :/
208 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
209 functions and friends. This interface was considered as
210 deprecated since over 2 years, it's time to inform our users that it is.
211 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
212 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
213 use these (crappy) functions in your code.
214 These functions will be removed soon. Stop using them now.
215 * Deprecate MSG_get_host_{table,number}
216 Implement MSG_hosts_as_dynar() instead.
217 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
218 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
221 * Stabilize the parallel execution mode of user contexts
222 * Introduce configuration variables to control parallel execution:
223 - contexts/synchro: Synchronization mode to use when running
224 contexts in parallel (either futex, posix or busy_wait)
225 - contexts/parallel_threshold: Minimal number of user contexts
226 that must be part of a scheduling round to switch to parallel
227 execution mode (raw contexts only)
228 * Fix bugs that prevented to use suspend/resume along with
229 synchronization structures.
230 * Fix bugs in process termination that lead to invalid memory access
231 in very specific conditions.
234 * Introduce a parallel mode for the models (controlled by surf/nthreads
235 configuration item). In our tests, running the models in parallel
236 never lead to any speedups because they are so fast that the gain
237 of computing each model in parallel does not amortizes the
238 synchronization costs, even when ultra fast futexes are used.
239 This is released anyway because YMMV.
242 * Performance boost by using a swag internally to compute the set of
243 tasks that are finished and should constitute the return value of
247 * Enable it by default now that it is considered rather stable.
250 * Documentation of the tracing functions.
251 * Performance gains when tracing categorized/uncategorized resource
252 utilization by avoiding calls to get route when updating resource
253 variables. LMM constraints are being used instead.
254 * API changed to set task categories. Use MSG_task_set_category instead
255 of TRACE_msg_set_task_category, and SD_task_set_category instead
256 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
257 * Bugfix for graphicator, routes not correctly obtained, memory leaks
258 * Examples for link user variables added (see at examples/msg/tracing/)
259 * Deprecated function TRACE_msg_set_process_category completely removed
260 * Trace header updated according to the latest Paje file format
261 * Tracing network lazy updates, no longer obligate users to use full updates
262 * --cfg=tracing/platform:1 also registers power/bandwidth variables
263 * Experimental: let user code declare/set/push/pop application states for hosts
264 * API changed to allow the manual creation of graph configuration files
265 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
268 * Improve the API of Lua MSG bindings, using the Lua spirit.
269 * Each simulated process now lives in its own Lua world (globals are
270 automatically duplicated). It helps writing simulators. Will allow
271 to run Splay programs within SimGrid in the future.
272 * Add a Chord example in Lua, equivalent to the MSG one.
275 * Start the implementation of a solution to express temporal
276 properties, not only local assertions. This is still an
277 experimental work in progress, stay clear from it to be safe.
281 - Add new runtime parameters --help-logs and --help-log-categories
282 to display informations about supported logging parameters and
284 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
285 don't exists anymore.
286 * Mallocators: allow value NULL for the reset function.
288 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
289 create homogeneous dictionaries, where all the elements share the
290 same free function. Non homogeneous dictionaries will be
291 deprecated in the next release.
292 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
293 - Multi-level dictionaries are deprecated.
295 - new function xbt_dynar_search_or_negative() that is useful when
296 you have less than 2 million elements in your dynar and don't
297 want of the extra complexity of catching exceptions when the
298 element is not found.
300 - Make xbt_os_thread module (for thread portability) public.
301 Documentation is still to come, sorry.
303 - Cleanups and simplifications to make it maintainable again.
304 - Exotic features (such as memalign and valloc) were removed.
305 - The metadata were extended and improved so that the
306 model-checker becomes able to explore and inspect the heaps.
307 - This may induce a performance drop when enable_model-checking is
308 ON in cmake (even if it's not used in the simulation), but it is
309 necessary at this point to get MC working.
311 Turn model-checking OFF if simulation performance matters to you.
312 Not enabling it at runtime is not enough, disable it in cmake.
314 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
316 SimGrid (3.6.2) stable; urgency=low
318 The "Not coding new stuff allows to polish old things" release.
321 * New bindings to the NS3 packet level simulator (experimental)
322 * Use the raw (efficient) execution contexts instead of the sysv
323 (portable) ones when possible.
324 * libpcre is now mandatory in any cases since not using it led to
325 severe performance loss and possibly other issues
326 * Update the XML platforms:
327 - G5K: include the latest machine in Nancy
328 - GridPP and LCG: new platforms
329 * Documentation was partially updated, at least (more to come)
331 Bug fixes, cosmetics and small improvements
332 * Free terminated processes before the end of the simulation to avoid
333 exhausting the memory of users having very dynamic amount of
335 * Bug fix and cosmetics about canceling non-running tasks
336 * Bug fix about the dot loader's issues when using libcgraph
339 * Create an installer for windows with nsis (amd64 and win32)
340 - Add an hello world project to illustrate simgrid project creation.
341 - Embed libpcre into the Simgrid installer to avoid
342 its compilation burden
343 * The raw execution contexts should work on Apple now
344 * Port to Windows 64 bits
345 - Sysv contexts now have an implementation for this arch
346 - GRAS communication features now support this arch
347 * Drop support for borland compiler on windows
348 - this code was not maintained, and we kinda depend on gcc nowadays
349 * Fix portability issues on kfreebsd/gnu: build error about semaphores
350 * Fix portability issue on unstable ubuntu: linker became picky on
353 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
355 SimGrid (3.6.1) stable; urgency=low
357 The "Oops, we broke Macs too" release
360 * Fixed contexts detection so that raw ones are used when possible
361 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
362 leads to a strange error, with user code segfaulting sometimes when
363 the generated code is not perfectly aligned (which is not
364 controllable from the user side, depends on the amount of code)
367 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
369 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
371 SimGrid (3.6) stable; urgency=medium
373 The Summer Release, also known as the "OMG! They Killed Kenny!" version
376 * Bindings now constitute their own package, separated from the main one.
377 Rationale: reduce our maintenance nightmare by reducing the module coupling
378 They will soon be released on their own on gforge.
380 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
381 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
383 GRAS: It is not considered as stable anymore, but experimental. Sorry.
384 * It's not quite deprecated for now because we have no replacement,
385 but it may soon become the case.
388 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
389 * Fortran: New user-level cache variable to store the rank of the running
390 process. This improves performance by an order of magnitude.
391 * C: New coccinelle script to automatically locate and modify global and
392 local static variables.
393 * Improved SMPI network model with a sender-side gap to account for multiple
397 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
398 only say if a communication is finished, no matter whether it succeeded or
399 failed. You can call MSG_comm_get_status() to know the status of a finished
401 * New function MSG_task_dsend() to send a task and detach it. When a
402 communication is detached, you are never notified of its success or failure
403 and the memory is released automatically once it is finished. This function
404 is useful when you don't care about the end nor the success of a
406 * Change the prototypes of action replay. Sorry for inconvenience,
407 but this is really more efficient this way (and to adapt your code,
408 you just have to fix the initialization, that shouldn't be too long)
409 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
410 ever managed to do anything useful with it.
411 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
412 takes a dynar of communications. It returns immediately and gives the
413 index of a finished communication (if any).
414 * New example: a basic implementation of the Chord P2P algorithm.
417 * New model for multi-core CPUs. You can now use the core attribute to
418 precise the number of cores of a host. This is a basic model. Every
419 process running on the host receives at most the power provided in
420 the DTD (throughput<=power). Total throughput of process cannot exceed
422 * New peer tag. This peer tag creates a tiny AS comprising a host and a
423 router linked by an up-link and a down-link (possibly asymmetrical).
424 This kind of pattern allows to easily build last-mile model style platforms.
425 Aggregating such patterns in a rule-based AS is thus the technique of
426 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
427 * New model for Vivaldi routing. We transformed the Vivaldi network model
428 into a Vivaldi routing model (based on the rule-based model). This allows to
429 combine Vivaldi based latencies with last-mile platforms.
432 * Added a check for NaN of IEEE754 infinite in the double entries of
434 * Introduce a new context factory "raw", highly inspirated from the
435 ucontext factory, but using manually crafted functions in assembly to
436 do the work in an efficient manner.
437 * Allow to change the used context factory at run time, not only at
438 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
439 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
440 contexts at runtime (only with raw contexts or ucontexts).
441 * Completely rewrote this module to allow parallel execution of user
442 processes. Use --cfg=contexts/nthreads:N to execute user processes
443 with N parallel threads (the default is 1, meaning no parallelism).
444 * Allow to decide dynamically between sequential and parallel modes.
445 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
446 processes in parallel only when their number is greater than or equal to P
448 * Added a check for NaN of IEEE754 infinite in the double entries of
452 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
453 won't output the state of processes when interrupted with Ctrl-C
454 * Add a new function xbt_dynar_to_array that transforms a dynar into a
455 NULL-terminated array. This may solve backward compatibility issues
456 due to the change to return type of SD_simulate. See also:
457 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
458 * Add new macros with variable number of arguments.
459 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
460 - in xbt/asserts.h: xbt_assert
461 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
462 - in xbt/ex.h: THROWF and RETHROWF.
463 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
465 * Change xbt_die() to accept a format string with arguments, just like printf.
466 * New data structure: xbt_lib_t, like a dict but more general and with better
470 * New configuration options
471 Options triva/categorized and triva/uncategorized can be used to generate
472 graph configuration files for Triva visualization tool.
473 * Configuration option tracing/platform is renamed to tracing/categorized
474 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
475 * New TRACE_user_link_variable interface:
476 User provides the name of the link and the tracing variable to attach to it
477 * the declaration of tracing categories must be done after the environment
479 * simpler tracing interface, just one way to declare categories
480 TRACE_category or TRACE_category_with_color, it is up to you
481 * links in the trace file are again identified by their names
482 * trace contains the full platform hierarchy exactly as declared using the ASes
483 * Options tracing/msg/[task|process]:1 groups the process by hosts
484 for both cases, tasks and processes must have names that are unique during the simulation
485 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
486 * The experimental option tracing/msg/volume is deprecated
487 its functionality may be reincorporated if needed
489 The tracing generates a trace file with unordered timestamped events,
490 because of the way the core simulator (surf) works. A script available
491 at the tools directory (fix-paje-trace.sh) can be used to put the events
492 in order. We have changed the tracing so it can generate ordered timestamped
493 events in the final trace, but depending on the simulator (and how much time
494 is simulated) that can lead to a huge memory utilization. It is deactivated
495 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
498 * Define a SIMGRID_VERSION macro in simgrid_config.h.
499 - We are trying hard to keep the API stable, but it may happen that
500 some things change (we're a research project after all, not a
501 nuclear plant operating system). If such things should happen, you
502 could rely on that macro to adapt.
503 - current value: 30600 for 3.06.00, aka 3.6
504 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
505 a number that can be compared with SIMGRID_VERSION.
506 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
507 assertions and verbose/debug logging events are disabled at compile time.
509 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
511 SimGrid (3.5) stable; urgency=medium
514 * New feature to any SimGrid-based simulator: Model-Checking
515 Check SIN#1 for more details.
518 * New Model SMPI (three-interval linear regression for correction factors)
519 See RR-7426, available at http://hal.inria.fr/inria-00527150
520 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
521 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
522 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
523 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
524 * See also src/smpi/README
529 - Tracing API changes: TRACE_start and TRACE_end should not be called
530 by user-code. They are automatically called by simulators created
531 with SimDAG, MSG and SMPI if the toolkit is compiled with
532 tracing_enabled=ON. Categories declaration and utilization remain the
533 same for MSG and SimDag.
534 - A function was added to the tracing API to declare categories with
536 - TRACE_category_with_color (char *category, char *color)
537 where color must be in the following format
538 "%f %f %f", red, green, blue
539 and red, green, blue are float values in the interval [0, 1]
540 - User can specify NULL as color parameter, or continue calling
542 On that case, the tracing system will define random colors
543 - The following command-line options are supported:
544 --cfg=tracing/filename:msg.trace
545 --cfg=tracing:1 (activate tracing, needed to use others)
546 --cfg=tracing/platform:1 (categorized resource use)
547 --cfg=tracing/uncategorized:1 (uncategorized resource use)
548 --cfg=tracing/msg/task:1 (task creation)
549 --cfg=tracing/msg/process:1 (process creation, migration)
550 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
551 --cfg=tracing/smpi:1 (SMPI interface tracing)
552 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
553 - examples of examples/msg/tracing updated
555 - DAXLoader and DOTLoader functions can generate tasks with categories
556 - A new function to attribute a category to SD tasks:
557 TRACE_sd_set_task_category (SD_task_t task, char *category)
558 * Tracing the MPI interface implemented by SMPI
559 - Collective operations are traced with states
560 - Point-to-Point operations are traced with states/links
561 - Tracing activated by a parameter "-trace filename" passed
562 to smpirun during execution (considering that simgrid
563 is compiled with tracing enabled)
564 - To run the simulation with gdb, the simulator
565 accepts --cfg=tracing/smpi:1 to trace SMPI
566 - tesh files to check if smpi tracing is ok
567 - See examples/smpi/NAS/DT-trace
568 * GTNetS tracing re-worked
569 - adaptation to the tracing system of GTNets to cope
570 with modifications regarding the fullduplex mode
571 - new tesh files to check if gtnets tracing is ok
574 * Asynchronous communications through the functions:
575 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
576 * New function: MSG_load_platform_script()
577 to make possible using a lua script instead of XML files to set up platforms
578 * New function: MSG_set_function
579 to associate functions to processes, used when bypassing the parser
580 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
582 Platforms: Add some more examples in examples/platforms
583 * Grid'5000: see www.grid5000.fr
584 * *_30000_hosts.xml: various huge files [mainly scalability testing]
587 * Change the XML format. This is a very important modification. SimGrid
588 3.5 introduces a new hierarchical format based on the notion of
589 Autonomous Systems. Compatibility with old format is ensured
590 through the perl script provided in the install bin directory
591 bin/simgrid_update_xml.
592 It is now possible to build platforms with specific routing
593 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
594 connect several platforms together. We will try to provide soon
595 set of realistic platforms exploiting these properties (have a
596 look at examples/platforms/ for the moment).
597 * Take the opportunity of the XML format change to be a good XML citizen:
598 rename link:ctn to link_ctn and similar changes (also dealt with by
600 * Add a new routing scheme (rule-based) using regular expressions. It
601 enables to have an extremely low memory footprint when the
602 underlying routing is simple and can be compactly described. You
603 need to have libpcre4-dev (perl regular expressions) installed if
604 you want to use this routing scheme.
605 * Revive the cluster TAG and allow to easily and efficiently (both in
606 term of memory and speed) connect clusters together. Have a look
607 at teshsuite/simdag/platforms/ to see how this can be done. With
608 this tag, you can create clusters with thousands of tasks at no
609 cost (have a look at examples/platforms/).
610 Note: clusters are implemented as ASes, so there is no need for an
611 enclosing AS tag if you have only one cluster in your platform.
612 * Add new generic functions in the public interface that allows the user
613 to call SURF 'create_resource' methods from your code (same
614 functionality as the XML bypass mechanism but with a much lighter
616 * Add a new model (enabled through command line --cfg=network/model:SMPI)
617 that uses a piecewise linear approximation to produce better
618 results when exchanging small messages.
619 * Add a new parameter to handle correctly full duplex link and account
620 for interferences between uplink and downlink communications
621 (activate with --cfg=fullduplex:1).
624 * Rename the SD_READY (all dependencies are satisfied and task is
625 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
626 dependencies are satisfied) state.
627 This prevents a confusion between the notion of "ready to schedule"
628 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
629 simulated" (SD_RUNNABLE) used by the simulation kernel.
630 * Change the way a task is considered as ready. Instead of removing
631 dependencies when a task is done, a counter is decreased. This way,
632 it is always possible to reach ancestors thanks to the
633 SD_taks_get_parents function (even after the end of the simulation.)
634 * Change the return type of SD_Simulate from (SD_task_t*) into
635 xbt_dynar_t. This function was in handling a dynar internally and
636 converted it into a NULL terminated array for historical reasons.
637 * New function SD_dotload(char*) to load a DAG described in dot
638 format. This loader and the corresponding examples require the
639 installation of the graphviz library.
640 * Fix a bug in the management of tasks of size 0 in the surf network
641 models. This problem was only visible with SIMDAG and you should
642 thus disregard results produced with earlier versions if you
643 relied on this feature (some tasks were blocked because of this).
644 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
645 even though your applications were doing only point-to-point
646 communications and sequential computations. Now you can really use any
647 model you want (of course, if you create real parallel tasks, which are
648 not implemented in most models beside ptaskL07, this will abort).
649 * Add an example that schedules a DAX on an heterogeneous platform
650 using a Min-Min strategy.
651 * New function SD_workstation_get_current_task() that returns the kind
652 of task currently running on a workstation in the sequential access
654 * Raise some warnings when unexecuted tasks remains at the end of the
655 simulation. This is usually caused by cycles in the DAG.
658 * New function: SIMIX_process_set_function() called by MSG_set_function
659 * Change the underlying waiting queue in semaphores so that a process
660 can wait on several of them simultaneously (as in waitany).
661 * Fix the way to handle tokens in semaphores so that all access patterns
662 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
663 * kill the dirty pimple SIMIX_message_sizes_output()
664 Please use (proper) visualization instead
667 * New data container: setset (set of sets of elements)
668 * New module: mmalloc (mapped malloc, allowing to have several
669 independent segments of malloc)
670 * New function: xbt_dict_cursor_set_data()
671 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
672 * New function: xbt_dynar_is_empty()
673 * New function: xbt_fifo_get_last_item()
674 * Fix xbt_dynar_shrink(): use the right element size.
675 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
676 uninitialized areas during expand.
677 * Fix semaphores: previous implementation was severely broken.
678 * Use library init/fini functions for our initialization.
679 - you can use logs and other feature as soon as you want in your
680 code (even before the xbt_init / MSG_init)
681 - xbt_exit is now a no-op and produce a warning when used.
684 * Port GRAS to new SIMIX mechanisms. This allows gras users to
685 benefit from the latest improvement to the simulation kernel.
686 * Kill measurement sockets for now. If you rely on them, sorry. This
687 release is not for you. This feature will be reintroduced in the
688 future, but we cannot delay the release any further.
689 * New function: gras_msgtype_get_name().
690 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
691 * Fix (at last) the pmm example: it should not randomly fail anymore.
693 Build chain: bug fixes and overall polishing
694 * Cmake is now stable enough. Hence, we killed the autotools.
695 * Port to windows ( TM :)
696 * Fix the 'make install' target.
697 No need to use 'make install-simgrid' anymore
698 * Introduce a 'make dist' target compiling a *source* archive
699 'make package' compiles a binary archive
700 * Compile java files only on need
701 * Add --cd and --setenv command line options to tesh
702 * Out of source builds are not fully supported yet, but we are close
703 * Enable supernovae and optimization flags by default for our users
706 * Add layer to set up environment directly from lua, without XML.
707 * The effect of gras_stub_generator can be achieved through
708 lua too (check examples/gras/console/ping_generator.lua)
710 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
712 SimGrid (3.4.1) stable; urgency=low
714 The "Polishing easter eggs is probably a good idea" release.
715 This is a bug fixes release only.
719 * Fix a bug preventing the tasks from begin garbage collected.
722 * Fix a bug occuring when a host involved in a communication fails.
723 This was not detected properly by the other peer involved in the
724 communication. Now, it's reported as a network error.
727 * Warn the user about loop dependencies in data flow of DAX files
728 * Obey the control-flow dependencies of DAX files
731 * Add option "enable_smpi" allowing to not compile SMPI.
732 Probably useful for the (Mac) users experiencing a build error here
733 * Improve the detection of lua5.1 and ruby1.8
735 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
737 SimGrid (3.4) stable; urgency=low
739 The "Easter in Cargese" release. Also known as (major changes):
741 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
742 ~> bindings were greatly improved
743 ~> new tracing infrastructure for better visualization introduced
745 * the "Welcome to configury modernity" release.
746 ~> we switched from autotools to cmake, and improved our cdash
749 A more detailled list of changes follow (full detail in svn log).
751 Java Bindings: Various Cleanups
752 * (install java-gcj-compat-dev on debian-like to use them)
753 * Remove put/get: no need to export deprecated interface in Java
754 Use send/receive instead.
755 * Cleanup the examples and add a README per directory
756 * Remove example autoDestination (that's the only way to go now)
757 * Remove example explicitDestination (was a plain copy of basic)
758 * Make JniException a runtime exception, so that there is no need to
759 declare the fact that you may encounter such a beast. I guess that
760 nobody will ever want to survive such error.
761 * Create specific errors for each MSG case of failure:
762 host failure, transfer failure, timeout, task cancelled
763 * Cleanup the exceptions that may get thrown by each function
764 * Other internal cleanups in Java bindings. Performance still bad :/
765 Ruby and Lua Bindings: create them
766 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
767 * That's new and great, you should try them out.
768 Same functionalities than Java bindings, only even less polished
770 * Kill the useless "rate" argument of SD_task_get_execution_time()
771 Everyone used to provide -1 as a value, it was not used, and the
772 semantic of a possible use wasn't even clear.
773 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
774 either as comm costs or compute costs to mean that there is no
775 such thing for that specific task.
776 * Add a SD_task_set_name() function
777 * Fix SD_task_unschedule() on typed tasks
778 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
779 * In DAX loader, accept useless 'level' attributes to <job> since
780 LIGO DAGs have them (seem to be to ease graphical representation).
782 * Add an example masterslave_mailbox.c using send/receive and not
783 the deprecated put/get interface.
784 * Kill the MSG_paje_output() function. It's a noop since 2 years.
785 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
787 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
788 (declare MSG_USE_DEPRECATED to still have the old name)
789 * Add a MSG_task_set_data() function
790 * About trace replay (see examples/msg/actions):
792 - Allow to work with splitted trace files for each process
793 Give the specific trace file as argument of each process,
794 and call MSG_action_trace_run(NULL)
795 You can still have one merged file for all processes.
796 - Fix implementation of collective operations
797 * Allow task_execute() on 0-sized tasks (closes #10063)
799 * This is the first release of SimGrid where SMPI is not considered
800 beta anymore (even if some corners should still be improved)
801 * Port over the new SIMIX_network submodule (internal refactoring)
802 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
803 * Implement more missing elements of the standard:
805 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
807 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
808 MPI_Scan() MPI_Get_processor_name()
809 - Added implementation of missing case for Alltoall (warning: it's
810 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
811 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
812 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
813 SMPI_MPI_Allgatherv()
815 - MPI_Waitsome() was broken
816 - Allow relative includes in smpicc
817 - Command line cfg argument 'reference_speed' was ignored...
818 - Some functions did not properly lead to auto-benching of user code
819 - smpicc passes -O2 by default (just like openmpi one)
821 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
822 * Bug fixes about timeouts during communications
823 * add SIMIX_message_sizes_output() as a pimple to write to file the
824 amount of messages per size. Use gnuplot to get histogram.
825 Pimple because that's the only user-visible function of simix,
826 defined directly in xbt.h (irk, sorry)
828 - Add a SIMIX_sem_get_capacity() function
829 - Fix interactions with processe resume/suspende
830 - release_forever() was stupidly broken
831 - Fix SIMIX_display_process_status() for processes in a semaphore
832 - Make SIMIX_sem_block_onto() user-visible
833 * Refactoring context stuff:
834 - Use pseudo-OOP for better modularity
835 - reimplement SIMIX_process_kill() without process_schedule() so
836 that the latter can take as invariant that it is called from
838 - Merge context_start into context_new for sake of simplicity
840 * Add a Vivaldi network model, coded live during SUD'10 ;)
841 * Rename configuration variables to start a hierarchy:
842 o cpu_model -> cpu/model
843 o network_model -> network/model
844 o workstation_model -> workstation/model
845 * New configuration variables:
846 o network/bandwidth_factor: correction to bandwith
847 o network/latency_factor: correction to latency
848 o netwotk/weight_S: correction to the weight of competing streams
849 * Add a long description to the models, that users can see with such
850 argument on the command line: --cfg=cpu/model:help
851 * --help-models display the long description of all known models
853 * config: add the ability to set a default value after registration
854 Does not override any previously set value (e.g. from cmd line)
855 * dict: allow to have integer key and data.
856 When so, you need to use the following functions
857 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
858 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
859 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
860 In contrary to regular dicts, the key is not malloced before copy.
861 Mixing scalar and regular elements in the same dict is not tested
863 * Allow to use xbt_dynar_shrink() to expend the dynar instead
864 Tracing for Visualization:
865 * SimGrid is now instrumented in order to generate a trace file for
866 visualization analysis: to use it, need to compile SimGrid with the
867 "tracing" option enabled, and instrument the program using SimGrid with
868 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
869 (among other functions).
870 * The instrumentation only traces the platform utilization for now
871 * Documentation to use the tracing functions and how to analyze the
872 traces with the Triva tool is written.
873 * More information about: SimGrid FAQ (in the section Tracing Simulations
876 * We moved to cmake as default build system. Autotools support will
877 be dropped soon. Check the FAQ for more info about how to use it.
878 * Greatly improved our cdash/ctest interactions
879 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
880 * Added memory checking tests with valgrind; lot of memleak fixing.
881 This may be the first release of simgrid with so few memory issues
882 * Added code coverage tests.
883 Our coverage is still improvable, but at least we see it on cdash.
885 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
887 SimGrid (3.3.4) stable; urgency=low
889 The "Desktop Grid needs love too" release (also called Xmas release).
892 * Major speedup in the maxmin system solving by using lazy evaluation
893 Instead of solving completely the maxmin system at each iteration,
894 only invalidate (and recompute) the modified parts.
895 This new feature is enabled in default models but you can try to
896 turn it on with "--cfg:maxmin-selective-update=1" for other models.
897 * Cas01 IMproved as default CPU model
898 This CPU model is the same Cas01 model, but it uses the
899 maxmin-selective-update flag and a heap structure to manage
900 actions on SURF kernel.
901 It reduces the complexity to find the next action to finish and,
902 consequently, it's faster than the old Cas01.
903 This is the new default CPU model (Cas01).
904 * Rename the old Cas01 model to Cas01_fullupdate
905 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
906 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
907 * CpuTI (CPU Trace Integration)
908 A new CPU model whose objective is simulate faster when using
909 availability trace files.
910 Instead of using a full featured, over engineered maxmin system for
911 CPU modeling, this model does the pre-integration of traces files
912 to calculate the amount of CPU power available, and so, executes
913 faster than the old CPU models.
914 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
915 * Use LV08 as default network model since it gives better accuracy
916 for small messages and shouldn't change things for big ones.
917 Use --cfg=network_model:CM02 to get the previous behavior.
920 ******************************************
921 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
922 ******************************************
923 * The new CPU model may changes simulations!
924 The point is that events occurring at the exact same timestamp
925 are not scheduled in the same order with the old and new
926 version. This may be enough to completely change the execution
927 of simulations in some cases.
928 * The new network model will change simulations!
929 This new model is more realistic than the previous one, so you
930 should consider redoing your old experiments with this model.
931 Sorry for the inconvenience.
934 * Introduce the supernovae compilation mode
935 When compiled that way, the whole SimGrid (or almost) is put in a
936 single compilation unit and compiled in one shoot.
937 This is to help gcc which has difficulties to inline stuff from one
939 The speedup seem to be above 15%, althrough more tests are needed on
940 amd64 to confirm that gain.
943 * Port of MSG's mailbox on top of SIMIX network
944 The put/get mechanism was greatly simplified on the way.
947 * New SIMIX network module. Provides:
948 - Mailbox: rendez-vous mecanism to find with who you want to speak
949 - Synchronous send/recv: easier and hopefully faster since the
950 logic is handled in the maestro process directly now
951 - Asynchronous send/recv: you dreamt of it? It's here now
952 Too bad that nobody cared enough to propagate the change to MSG.
953 * Add semaphores as SIMIX synchronization mechanism.
956 * new function SD_daxload(char*) to load a DAX file
957 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
958 * Introduce typed tasks. Specify its kind and cost at creation.
959 At scheduling, just give where it should be placed, and the cost
960 for each involved resource is automatically computed.
961 Existing constructors so far (more to come of course):
962 - SD_task_create_comm_e2e() for end-to-end communication
963 - SD_task_create_comp_seq() for sequential computation
964 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
965 * new function SD_task_dump() for debuging display
966 * new function SD_task_dotty(task,FILE*) writing to file the info
967 about the task in dotty format
968 * SD_task_dependency_exists() can now cope with having one of its
969 arguments NULL. If so, it tests whether the other argument has any
971 * Add getters on list of preceding/following tasks:
972 SD_task_get_parents(task) and SD_task_get_children(task)
973 * Add getters on amount of workstations and list:
974 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
975 * Add getter on task kind: SD_task_get_kind(task)
976 * Update the start_time and finish_time of tasks on completion/failure
977 * Bugfix: Remove task from state swags when destroyed
980 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
983 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
984 dynar with one separate thread per value of the dynar.
985 * Change the prototype of xbt_thread_create(), sorry.
986 Added a boolean parameter indicating whether we want to join this
987 thread (used in SG only for now)
988 * Implement xbt_thread_join and xbt_thread_yield in SG also.
991 * GTNetS wrappers should now be usable again (and betterly tested too)
992 * Fix a major regression from 3.2 where the timeout provided to
993 MSG_task_put_with_timeout() was used as absolute time before which
994 the comm should be done.
995 * Start to fix the <cluster> tag.
996 - Internal links should be good now (beside of the loopback, which
997 use the private link instead)
998 - paths to the external world is still rather broken
999 - the <route:multi> tag is just broken. Actually that's brain-dead.
1000 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
1001 to make it less stupid
1002 ** Check your platform with teshsuite/simdag/platforms/flatifier **
1003 * Fix a source-level compatibility glitch from 3.2: after defining
1004 MSG_USE_DEPRECATED, you can use the old name
1005 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
1006 * Allow to compile from the SVN with automake 1.11
1007 * Fix some problems when using the "start_time" tag in deployment XMLs.
1008 * Fix #8569: XBT/synchro.h has redundant declarations
1009 * Fix #8563: MSG return values and exceptions
1010 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
1011 * Integrate patch #8636: Obey DESTDIR when installing documentation.
1012 Thanks to Robson Peixoto.
1013 * Fix a vicious bug in dictionaries inducing that some elements were
1014 not freed on xbt_dict_free()
1016 Portability report of this version:
1017 * Main portability targets:
1018 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
1019 on (amd64/i386/ia64)
1020 - mac leopard on i386
1021 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
1022 but nothing critical.
1023 * Other platforms: windows, AIX and others were not tested for this release
1025 Timing report of this version:
1026 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
1027 scenario parameters). From 8h to a few seconds in desktop grid settings.
1028 * Supernovae brings about 25% speedup on i386.
1030 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
1032 SimGrid (3.3.3) stable; urgency=low
1034 The "Need for Speed" release.
1036 The timings done to validate the 3.3.2 were faulty.
1037 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
1039 The problem was a conversion from a manually handled vector to
1040 xbt_dynar_t on the critical path.
1041 xbt_dynar_foreach calls functions, inducing stack management crap.
1043 We inlined these functions and xbt_dynar_foreach is now breath taking.
1044 We also inlined xbt_swag_belong on the way.
1046 Here are some approximate speedup measurements (on master/slaves
1047 simulations lasting between 10s and 20s each):
1048 3.3.1 -> 3.3.2: about same performance
1049 3.3.2 -> 3.3.3: 40% speedup
1050 3.3.1 -> 3.3.3: 40% speedup
1051 3.3.1 with inline patch -> 3.3.3: 30% speedup
1053 Our reading is that the refactoring which occurred in 3.3.2 made us
1054 suffer much more from the xbt_dynar_foreach low performance, but
1055 once we solved this, this refactoring proved to be very performance
1056 effective. From the 40% speedup, somehow, 10% are due to the
1057 inlining and 30% to the refactoring.
1059 That's a pitty that gcc cannot inline functions placed in other files
1060 alone. We have to choose between:
1061 - break the encapsulation (by putting private data structures and
1062 accessors in headers files to help gcc)
1063 - live with low performance
1064 - switch to a decent compiler such as icc (not quite possible).
1066 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
1068 SimGrid (3.3.2) stable; urgency=low
1070 The "Simplicity does not preceed complexity, but follows it" release.
1072 The main contributors of this release were (lexical order):
1073 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
1076 * Extract the routing logic into its own object.
1077 (was dupplicated in network.c and workstation_LV07.c;
1078 Allows to implement other ways of storing that info)
1079 => kill now useless network_card concept
1080 - Use dynar to represent routes (instead of void** + int*)
1081 - kill link_set (use surf_network_model->resource_set instead)
1082 - Add a command-line option to choose the routing schema to use
1083 - Add three new models:
1084 * Floyd (shortest path computed at initialization)
1085 * Dijikstra (shortest path recomputed all the time)
1086 * Cached Dijikstra (shortest path computed on need)
1087 All these models where contributed by Silas De Munck, and are
1088 described in his ICCS09 paper.
1090 * Simplify model declaration
1091 (less redirections, less function to write when defining a model)
1092 - Factorize stuff between models:
1095 surf_model_resource_set(model)
1096 surf_model_resource_by_name(model, name)
1097 - Unify the types of models in s_surf_model_t (using an union)
1098 - Embeed fields of common_public directly into s_surf_model_t
1099 - Rename model methods:
1100 action_free ~> action_unref
1101 action_change_state ~> action_state_set
1102 action_get_state ~> action_state_get
1103 - Change model methods into functions :
1104 (model)->common_public->action_use ~> surf_action_ref
1106 * Implement a generic resource; use it as ancestor to specific ones
1107 (allows to kill duplicated code in models)
1108 Drawback: timer command don't need no name nor properties;
1109 workstation_CLM03 don't need no properties
1110 (but I guess we can live with those few bytes wasted)
1112 * Improve the action object model
1113 - implement a constructor avoiding dupplicated code about field
1114 initialization in generic_action part.
1116 * Kill the SDP model: it has an external dependency, is deprecated
1117 in flavor of modern lmm models, and didn't compile since a while
1120 * Relocation of the context module from XBT to SIMIX.
1121 (the context were decoupled from the simix processes, duplicating a lot of code)
1122 => a lot of code was factorized
1123 - less overhead is introduced during scheduling
1124 - simpler API for the context factory
1125 - the logic for process creation,destruction and manipulation was simplified
1126 * Simplification of the s_smx_process_t data structure.
1127 => accesing the simix level data associated to a process is faster now,
1128 and the code is a lot more readable.
1131 * Implement some more MPI primitives:
1132 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
1133 -implementation: Bcast: flat or 2-ary tree (default),
1134 Barrier: 4-ary tree,
1136 Allreduce: Reduce then Bcast
1137 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
1138 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
1139 Alltoallv: flat tree, like ompi
1141 * Add support for optimized collectives (Bcast is now binomial by default)
1142 * Port smpirun and smpicc to OS X
1145 * Kill SD_link_get_properties: hard to maintain and makes very little sense
1146 Shout out if you used it.
1149 * Display the list of still queued messages in SG mode when existing
1153 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
1154 * Add xbt_graph_node_get_outedges() [Silas De Munck]
1155 * Add xbt_str_from_file(FILE*)
1156 * Add xbt_dict_get_key achieving a linear reverse search
1157 * Remove the context module
1159 Portability report of this version:
1160 * Main portability targets:
1161 - Linux(debian)/x86/context
1162 - Linux(debian)/x86/pthreads
1163 - Linux(debian)/amd64/context
1164 - Linux(debian)/amd64/pthreads
1165 On these, we still have the eratic breakages of gras/pmm and
1166 amok/saturate_sg reported in previous version. We still think
1167 that the tests are the cause of the fault, not the tested code.
1169 - Mac OSX Leopard/x86/context
1170 Still false negative in tesh autotesting.
1171 Smpi still fails, but this time because readlink does not accept -f
1172 Everything seems to work properly beside of that.
1175 - AIX version 5.3 (only tested contexts this time)
1176 Smpi still fails there because mktemp is not installed.
1177 Everything seems to work properly beside of that.
1179 I managed to compile it for the first time, but several breakages.
1180 Won't delay the release for this exotic platform.
1182 * Windows: it's still lagging behind. If you want to help, please
1185 Timing report of this version:
1186 This version seem to be more than 5% faster than 3.3.1 (on linux
1187 64bits with contextes). The gain is less than expected, we are
1188 investigating this for next release.
1190 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
1192 SimGrid (3.3.1) stable; urgency=low
1195 * Implement a --cfg-help to show existing configuration variables
1196 * Build chain do not require doxygen in maintainer mode
1199 * fix a bug on struct sizeof computation, which prevented the
1200 exchange of arrays of structs in some conditions
1201 - added a regression test about this in datadesc_usage
1202 * Allow the exchange of 0-long dynamic vectors.
1203 - for that, use -1 as indicator of dynamic size instead of 0
1204 - This implied to change any size from unsigned long to long,
1205 reducing a bit communication abilities, but I guess that with
1206 64bits being quite common, this is more than enough.
1207 - This also induce a protocol change, thus bumping network protocol
1208 version from 0 to 1 (if we have external users, we have to get
1209 clean on that point too ;)
1210 - added two regression tests about this in datadesc_usage
1211 * Be more verbose when propagating local exceptions
1212 This helps debugging.
1213 * Display the status of simulated processes when receiving SIGINT in
1217 * Allow to control the simulation from a trace file.
1218 New functions MSG_action_register() and MSG_action_trace_run()
1219 The first one allows to associate a function execution to each
1220 kind of action while the second one parses a trace file and
1221 triggers the corresponding actions within the system.
1222 For now, only a toy example is provided in examples/msg/actions
1223 * Add an exemple of process migration in examples/msg/migration
1224 * Fix a bug in task exchange which broke MSG_task_get_sender()
1225 Add a teshsuite regression test for that.
1226 [Bug: if MSG_task_get_sender() is called after sender exit,
1228 * Fix a bug which prevented suspend/resume to work properly
1229 * Display the status of simulated processes when receiving SIGINT
1230 This fixes a regression of v3.3. due to the introduction of SIMIX
1231 * Bug fixing in failure management:
1232 - trace could not start by a failure at time 0
1233 - failure during communications were not working
1236 * Add SIMIX_process_set_name() to change the name of the current
1237 process in the log messages.
1238 * Store smx_hosts in a dict since we only retrieve them by name
1239 * Move the configuration infrastructure to surf
1242 * Move the configuration infrastructure to surf
1245 * Massive internal cleanups:
1246 - Store internal structures on processes instead of hosts (allows
1247 to have more than one process per host, in addition of being more
1249 - Cleanup the initialization/finalization process
1250 - Kill a whole bunch of unneeded synchronization:
1251 processes run in exclusive manner within the simulator
1252 - Move queues from global tables to process data fields
1254 - now accept -platform and -hostfile arguments
1255 - Pass the right rank value to processes according to the hostfile
1256 * Compile the examples by default, and use them as regression tests
1257 * Implement MPI_Wtime()
1258 * Change the reference speed to a command line option
1261 * TCP_gamma can now be specified as command line option using
1262 --cfg=TCP_gamma:10000000.0
1263 * Change the --surf-path cmd line option into --cfg=path:
1266 * Also include strbuff from xbt.h public header
1267 * xbt_ex_display(): do not free the exception after displaying
1268 This allows to do more with the given exception afterward.
1269 Users should call xbt_ex_free() themselves.
1273 Portability report of this version:
1274 * Main portability targets:
1275 - Linux(debian)/x86/context
1276 - Linux(debian)/x86/pthreads
1277 - Linux(debian)/amd64/context
1278 - Linux(debian)/amd64/pthreads
1279 These targets fail about 1/10 of times on gras/pmm, but we believe
1280 that this is because of the test, not because of simgrid.
1281 amok/saturate_sg fails even more rarely, and the test may not be
1284 - Mac OSX Leopard/x86/context
1285 The test suite still spits tons of errors because some obscure
1286 force prevents us from removing the temporary directories
1287 arguing that they still contain some metadata I've never heard of.
1288 Smpi fails because seq is not installed.
1289 Everything seems to work properly beside of that.
1292 - AIX version 5.3 (both contexts and pthread)
1293 Smpi still fails there because mktemp is not installed.
1294 XML inclusions seems rosty on AIX.
1296 * Windows: it's still lagging behind. If you want to help, please
1299 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
1301 SimGrid (3.3) stable; urgency=high
1305 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
1306 [Malek Cherier & Mt]
1308 * Introduce the SIMIX module: factorize code between MSG and GRAS.
1311 Until now, GRAS were using MSG as an interface to SURF. It was
1312 quite difficult because both interface have several differences
1313 (MSG channels vs GRAS sockets were the most notable point).
1315 This also opens the gate to SMPI (which should occur soon) and speed
1316 up simulations by to 40% (even if it were not the main goal).
1318 **************************************
1319 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
1320 **************************************
1321 The point is that events occuring at the exact same timestamp are
1322 not scheduled in the same order with the old and new version. This
1323 may be enough to completely change the execution of simulations in
1324 some cases. Sorry for the inconvenience.
1326 * Cleanup and upgrade the XML format to push further scalability
1327 issues (check http://hal.inria.fr/inria-00256883/ for more info)
1329 * Improve the testing infrastructure with tesh. Now a very large part of
1330 the code is tested not only by being run but also by checking that the
1331 output match an expected output [Mt].
1333 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
1334 is really less memory-demanding, which should allow you to use
1335 larger files in SimGrid [AL].
1337 * Inform valgrind about our contextes, so that it becomes usable
1338 with the default (and more effecient) version of SimGrid
1339 [contributed by Sékou Diakite, many thanks]
1342 * Introduce a listener thread in charge of receiving incoming
1343 messages from the network. It allows to overlap communication and
1344 computation but most notably, it removes some stupid deadlocks due
1345 to the fact that so far, a process could not send and receive at
1346 the same time. This made most non trivial communication schema
1348 * Convert the PIDs from long int to int to match the MSG ones (and
1349 linux ones too) [Mt]
1350 * New function: gras_agent_spawn() to launch a new process on
1351 current host. Only working in simulation for now. [Mt]
1352 * New function: gras_os_hostport() returning a constant form (ie,
1353 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
1356 * Make the backtrace of exceptions more human readable [Mt]
1357 * New module: xbt/str [Mt]
1358 a ton of string utility functions (split, join, printf to a newly
1359 allocated buffer, trim, etc)
1360 * New module: xbt/hash [Mt]
1361 SHA1 hashing algorithm (more to come if needed)
1362 * New module: xbt/synchro [Mt]
1363 synchronization tools (mutex and conditions) working the same way
1364 in simulation and in real life (mainly useful for GRAS, but not
1366 * New module: xbt/queue [Mt]
1367 classical producer/consumer synchronization scheme
1368 * xbt_dynar_new_sync() creates a synchronized dynar. All access
1369 (using the classical functions will get serialized) [Mt]
1370 * Make dictionary internal table dynamic. No need to specify its size
1371 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
1373 * Make sure the log channels are organized as a tree under windows
1374 (because of ANSI C compatibility issue, any channel were child of
1375 root directly) [Mt].
1378 * Cleaned many thing in surf and fixed a few bugs [AL].
1379 * Add a nice command line configuration mechanism to compose models [AL].
1380 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
1381 the previous one (KCCFLN05). It relies on something that looks like
1382 a max-min sharing mechanism but cannot be written as such. A new solver
1383 was thus designed [AL].
1384 * Add a new solver to lmm. Based on Lagrange optimization and
1385 gradient-based descent, it enables to efficiently maximise systems s.a
1387 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
1389 This solver enables to propose two new network models for TCP Reno and
1390 TCP Vegas based on Low's work. These models still need to be fully
1391 tested though [Pedro Velho].
1394 * Bug fix in SD_simulate. Now the time bound given as argument is
1396 * Use the new parallel task model (ptask_L07) as default.
1397 * Use the SURF command line configuration mechanism.
1398 * 0-size tasks (for synchronization) should now work.
1400 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
1402 SimGrid (3.2) stable; urgency=high
1406 We still experience issues on this platform, but we believe that at
1407 least MSG is usable.
1409 GRAS API BREAKAGE (for simplification purpose, sorry):
1410 * the gras_msgtype_by_name is not used anymore. Instead of
1411 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
1412 you can write (and must)
1413 gras_msg_send(toserver, "request", &request);
1414 - If you still want to pass a gras_msgtype_t to the function (to cache
1415 the type and avoid the lookup time), use the gras_msg_send_() variant.
1416 - Impacted functions:
1417 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
1418 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
1419 * The callbacks are now expected to return 0 when everything went well
1420 (just like the main() function)
1422 GRAS new features and improvements:
1423 * New module mecanism where user code can use per process globals [Mt]
1424 This is similar to gras_userdata_*() functions, but for libraries. It
1425 factorize some code developped over and over in the examples and AMOK.
1426 It has still to be documented and used (only amok/peermanagement is
1428 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
1429 loss when they were small enough to fit into the buffer and sent quickly
1430 enough so that they can all get received in one shoot.
1431 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
1432 if not found. Use the *_or_null() variant for the old semantic.
1433 * In gras_msg_handle, do not discard messages without callback.
1434 They are probably messages to be explicitly awaited later (ie, proofs of
1435 mis-synchronization in userland since they are sent before being awaited)
1436 No big deal usually.
1437 * gras_socket_meas_send/recv: semantic changed!
1438 The numerical arguments used to be (1) the total amount of data to send
1439 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
1440 messages. This was need for the fool willing to send more than MAXINT
1441 bytes on quite fat pipes.
1444 * Do really rename the hostmanagement module to peermanagement. [Mt]
1445 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
1446 but this is rather new and this was documented in the module
1447 documentation (poor excuses, I admit)
1448 * Bandwidth measurement semantic changed! This follows the changes to
1449 gras_socket_meas_send/recv explained above.
1452 * A sequential mode has been added to the workstations. When a workstation
1453 is in sequential mode, it can execute only one task, and the other tasks
1454 are waiting in a FIFO. [Christophe Thiery]
1457 * The KCCFLN05 workstation model now handles parallel tasks. It is the
1458 model for SIMDAG. [Christophe Thiery]
1459 * Bug fix in the maxmin solver: Some values were close to 0 instead of
1460 equal to 0, which caused some bad behaviors in
1461 saturated_constraint_set_update. I now use a threshold mechanism like in
1465 * When running manually src/testall, you select specific units [Mt]
1466 testall is the result of our cunit mecanism, and should replace all
1467 the scripty thingy around since bash don't run easily on billware.
1469 * A mallocator system has been added. [Christophe Thiery]
1470 Mallocators allow you to recycle your unused objects instead of freeing them
1471 and allocating new ones.
1473 Documentation update:
1474 * FAQ reworking + New FAQs:
1475 - "Valgrind spits tons of errors!" [Mt]
1476 - "How to repport bugs" [Mt]
1477 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
1478 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
1479 - Communication time measurement within MSG [AL]
1480 - I experience weird communication times when I change the latency [AL]
1481 * GRAS tutorial [Mt]
1483 - an introduction to the framework and to the used communication model
1484 - an initiatic tour introducing the most proheminent features:
1486 . Lesson 0: Installing GRAS
1487 . Lesson 1: Setting up your own project
1488 o Part 2: Message passing
1489 . Lesson 2: Exchanging simple messages
1490 . Lesson 3: Passing arguments to the processes (in SG)
1491 . Lesson 4: Attaching callbacks to messages
1492 . Lesson 5: Using globals in processes
1493 . Lesson 6: Logging informations properly
1494 . Lesson 7: Using internal timers
1495 . Lesson 8: Handling errors through exceptions
1496 . Lesson 9: Exchanging simple data
1497 . Lesson 10: Remote Procedure Calling (RPC)
1498 . Lesson 11: Explicitely waiting for messages
1499 . Recapping of message passing features in GRAS
1500 - A HOWTO section containing:
1501 o HOWTO design a GRAS application
1502 More are due, of course. They will come latter. In the meanwhile, you can
1503 check the examples which are still here.
1505 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
1507 SimGrid (3.1) stable; urgency=high
1511 There was a stack corruption somewhere, visible only when optimizing
1512 with these versions. [Vince]
1515 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
1516 module that enabled to play with Directed Acyclic Graphs. It is built
1517 directly on top of SURF and provides an API rather close to the old
1518 SG. Some old codes using SG are currently under rewrite to check that
1519 all needful functions are provided. [Christophe Thiery]
1522 * Complete rewrite of the KCCFLN05 workstation model. It is now an
1523 extension of the classical CLM03 model that gracefully handles
1524 failures. This is now the default model for MSG and GRAS. It doesn't
1525 handle parallel tasks yet though. [AL]
1526 * Bug fix: Weights were not correctly set in the network part.
1527 WARNING: This may have resulted in incorrect results with simulations
1528 where there are more than one flow on a given link. [AL]
1531 * After a (long ?) discussion on simgrid-devel, we have decided that the
1532 convention we had on units was stupid. That is why it has been decided
1533 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
1534 WARNING : This means that all previous platform files will not work as
1535 such with this version! A warning is issued to ask users to update
1537 A conversion script can be found in the contrib module of the CVS, under
1538 the name contrib/platform_generation/surfxml_update.pl [MQ]
1541 * Bug fix: Processes were started in reverse order, wrt deployment file.
1542 WARNING: if your code relies on this bug, please fix it. [AL]
1543 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
1544 being executed on two different locations. [AL]
1545 * Bug fix: Failures are now better supported thanks to Derrick's tests
1546 (there was many failure situations I hadn't thought of and that weren't
1547 correctly handled). [AL]
1548 * New function: MSG_host_is_avail indicates you whether a given m_host_t
1552 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
1553 Exception occurring on server-side are propagated back to client (!).
1555 API CHANGE: the callback changed their prototype. Change:
1556 int my_handler(gras_socket_t expeditor, void *payload_data) {
1558 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
1559 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
1561 * New! function: gras_msg_handleall to deal with all messages arriving
1562 within a given period.
1563 * New! function: gras_socket_server_range to get a server socket in a
1564 range of port numbers (ease to avoid port number conflicts) [MQ]
1565 * New! gras processes display their backtrace when they get a SIGUSR1
1566 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
1567 Sweet to debug RL processes [MQ]
1571 - Do not force experiment sizes to be expressed in kb, or it becomes
1572 impossible to measure the latency this way (needs one byte-long tests)
1573 WARNING: this changes the amok_bw_* function semantic. [MQ]
1574 - Implements the link saturation stuff. [MQ]
1575 * Peer management module:
1576 New! module factorizing code that we wrote over and over [MQ].
1579 * New module: cunit (my jUnit implementation in ansi C) [MQ]
1580 - Test units are placed directly into the library code, they get extracted
1581 automatically and placed into the src/testall binary.
1582 - Convert most of the XBT tests to this system.
1583 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
1584 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
1585 live in the same C code. This required to change a little bit the API
1586 of surfxml parsing but shouldn't be an issue for end-users. [AL]
1587 * New module: sparse graph structure with basic algorithms (this is work
1588 in progress and the API is not considered to be frozen yet). [AL]
1589 * Display more information on backtraces: source line & function names are
1590 now displayed just like valgrind does (rely on addr2line tool) [MQ]
1591 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
1592 * Reworked a little bit some #include statements to load only required
1593 headers. Some user code that relied on SimGrid to include stdlib or
1594 stdio may need to include it by themselves. [AL]
1595 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
1597 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
1598 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
1599 but I guess that almost nobody used those parts. [MQ]
1601 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
1603 SimGrid (3.0.1) stable; urgency=low
1606 * Unfortunately, I had missed 5 misnamed functions:
1607 xbt_fifo_item_t xbt_fifo_newitem(void);
1608 void xbt_fifo_freeitem(xbt_fifo_item_t);
1609 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
1610 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
1611 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
1612 They're now deprecated. Please use their new versions:
1613 xbt_fifo_item_t xbt_fifo_new_item(void);
1614 void xbt_fifo_free_item(xbt_fifo_item_t);
1615 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
1616 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
1617 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
1619 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
1620 * Documentation: xbt_log module unmercifully reworked [MQ]
1621 * Bugfix: there was a problem with the ending of contexts with
1622 the pthread backend. It caused some weird deadlock or behavior
1623 depending on the pthread implementation. [AL]
1624 * Bugfix: get the exceptions raised in the simulator repport where
1625 and why they come from when they are not catched in time [AL, MQ]
1628 * Bugfix: Do repport the error when two non-connected hosts try to
1629 exchange data (Thanks to Flavien for stumbling into this one) [AL]
1632 * Add additionnal checkings on communications. Assert that two
1633 communicating hosts are connected by a set of links... [AL]
1636 * Add additionnal checkings on channel values in communication [AL]
1637 * New: MSG_task_get_source to see on which host a task was generated [HC]
1638 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
1639 the number of tasks waiting to be received on channel and sent
1641 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
1642 waits for the first task coming from a given host.. [AL]
1644 GRAS new functionnalities: [MQ]
1645 * Enhance the parsing macro to allow the size of multidimentional objects
1646 to be given thru annotations.
1647 * New example (and documentation): Matrix Multiplication a la RPC
1648 (as when I was young!) and fix a bunch of bugs found on the way.
1650 GRAS performance improvements: [MQ]
1652 * Reduce the amount of cbps creation/destruction by making it static to
1653 datadesc_send/recv() and using a (newly created) cbps_reset (based on
1656 * Change libdata to a set so that we can search for stuff by ID (and thus
1657 reduce the insane amount of dict lookups)
1660 * Actually implement gras_datadesc_copy() so that we don't have to mimick
1661 RL communication on top of SG since it's so uneffective.
1662 It may also be used for inter-thread communication in RL, one day.
1663 * Use gras_datadesc_copy() to exchange messages on top of SG
1665 - improve message exchange performance on top of SG
1666 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
1667 * Don't exchange on the network the size of the used part of buffer,
1668 instead, specify the possible buffer size to read().
1670 - reduces the amount of read/write calls (one pair per exchange)
1671 - reduces the amount of exchanged data (the size)
1672 - allows to retrieve all arrived data on receiver side, if we don't need
1673 it right now (subsequent read will peek the buffer)
1674 - allows the receiver to proceed with the begining of the stream before
1675 everything is arrived
1676 - make it possible to build an iov transport (using readv/writev)
1678 - take care of the data with non-stable storage (like stacked data),
1680 * If possible, TCP send uses vector I/O (when writev() is here)
1681 - Don't use it for receive since we send data sizes and data on the
1682 same stream, so we wouldn't be able to chain large amount of chunks
1683 before having to flush the stuff to read the size.
1684 * Rework the transport plugin mecanism to simplify it and reduce the
1685 amount of pointer dereferencement when searching for the right function
1688 * I guess that now, we do almost as few system calls as possible while
1689 doing as few data copy as possible.
1691 To improve it further, we could try to send all the sizes first and then
1692 all the data (to use iov on receiving size), but it's only a partial
1693 solution: when you have 2 dimensional data, the sizes of the second
1694 dimension is data of the first dimension, so you need 3 streams.
1696 I'm not sure the potential performance gains justify the coding burden.
1698 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
1700 SimGrid (3.00) stable; urgency=high
1703 * New! Give the possibility to hijack the surf parser and thus bypass
1704 MSG_create_environment and MSG_launch_application. Have a look at
1705 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
1707 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
1709 SimGrid (2.96) unstable; urgency=low
1714 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
1715 This deprecates the xbt_error_t mecanisms.
1716 It modifies (simplifies) all XBT and GRAS API.
1717 MSG API keeps unchanged (exceptions raised by XBT are catched from
1718 within MSG and masked with existing error handling facilities)
1721 * New! Add a FATPIPE model. [AL]
1722 * New! Add a parallel task model. [AL]
1723 * New! Add automatically a loopback interface (in the default
1724 network model) if none was precised.
1727 * Bugfix: MSG_process_resume now works with the current running process.
1729 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
1730 * Modification of MSG_task_get_compute_duration. Once a task has been
1731 processed, the value returned by this function is now equal to 0. [AL]
1732 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
1733 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
1734 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
1735 of a m_task. For now, MSG_task_cancel only works with computation
1737 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
1738 of the processor (in Mflop/s) regardless of the current load on the
1740 * API Change: use proper naming convention for MSG_getClock and
1741 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
1743 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
1744 This function changes the priority of a computation task. This priority
1745 doesn't affect the transfer rate. A priority of 2 will make a task
1746 receive two times more cpu power than the other ones. This function
1747 has been added to suit the needs of Nguyen The Loc and hasn't been that
1748 much tested yet. So if it fails, please report it and send me your code.
1750 * API Change: removed all functions and types that were marked "deprecated"
1751 since many months. Renamed MSG_global_init_args to MSG_global_init.
1753 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
1755 SimGrid (2.95) unstable; urgency=low
1758 * Steal some nice code to GNU pth to fix context detection and usage [AL]
1759 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
1760 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
1763 * Bugfix: Allow absolute paths for platform description files [MQ]
1764 * Bugfix: do free the variables after use. Leads to drastic performance
1766 * Implement max_duration (ie, timeouts) on resources [AL]
1769 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
1771 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
1772 the needed support (timeouts) [AL]
1775 * Implement measurement sockets. You can now get the bandwidth between two
1776 hosts thanks to AMOK (see below). [MQ]
1777 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
1778 dynar over the network (yeah) [MQ]
1779 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
1780 * simple/static token-ring example. [Alexandre Colucci and MQ]
1781 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
1782 in place before [MQ]
1785 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
1786 type parsing. "short" and "long" modifiers were also ignored; other
1787 modifier (such as reference level) are still ignored. [MQ]
1788 * Embeed the buffer size within the buffer itself on SG. [MQ]
1789 That way, send() are atomic and cannot get intermixed anymore (at least
1790 the ones which are less than 100k; bigger messages still have the issue)
1791 * Array size pushed by the field, not by the field type (or each
1792 and every long int will push stuff to the cbps) [MQ]
1793 * use select() to sleep since it allows to portably sleep less than one
1796 GRAS (minor cleanups)
1797 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
1800 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
1801 * type category 'ignored' killed as it was never used and were difficult
1803 * whether a type can cycle or not is now a flag, leaving room for more
1804 flags (as "ignored", if we feel the need one day ;)
1805 * Rename raw sockets to measurement sockets since "raw" has another
1806 meaning in networking community.
1809 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
1810 and offers features not belonging to GRAS but that most applications
1811 need. One day, it may be a set of plugins loadable at runtime.
1812 * New module: bandwidth
1813 bandwidth measurement between arbitrary nodes running this module. [MQ]
1815 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
1817 SimGrid (2.94) unstable; urgency=low
1819 The first beta release of SimGrid 3 !
1823 * Update the main page and the FAQ. Adding references to gforge.
1826 * Add a gras_os_getpid function.
1829 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
1830 * Extend the logs so that they also print PID, hostname, date, ... if
1832 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
1833 and kill the old version which were in testsuite/
1834 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
1838 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
1839 for users. Instead, each programming environment (GRAS, MSG,...) use it
1840 when needed to provide such a feature to users.
1841 Don't shortcut the mecanism or you will also shortcut the virtualization
1842 you need on the simulator.
1846 * Cleanups in configury with regard to compile optimization/warning flags.
1847 Also add -fno-loop-optimize to any powerpc since it's the optimization
1848 killing gcc (< 3.4.0).
1849 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
1850 needed by MSG examples complications
1851 * Borrow configury beautifications from PHP
1854 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
1855 warning (thanks loris for stumbling into this one).
1856 * Bugfix: stop loading private headers (gras_config.h) from the public
1860 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
1861 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
1862 RL would imply a DNS resolver, which is *hard* to do in a portable way
1863 (and therefore delayed).
1864 * Implement a real timer mecanism and use it in timing macros. This allows
1865 to avoid rounding errors and get a 0.000005 sec precision in timing
1866 macros. While I was at it, various cleanups:
1867 - allow to declare more than one timed section per file (fix a stupid bug)
1868 - move some private declaration to the right place
1869 - merge conditional execution and timing macros into emulation module
1870 - document the module
1871 - make sure the module cleanups its mess on gras_exit
1872 * Documentation improvements:
1873 - (new) how to compile applications using GRAS
1874 - (new) emulation support (timing macros)
1876 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
1878 SimGrid (2.93) unstable; urgency=low
1880 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
1883 - Use Paje properly where used. Still to be sanitized properly.
1884 - Portability fix: Add an implementation of the contexts using pthread
1888 - Add xbt_procname(): returns the name of the current process.
1889 Use it to show the current process's name in all logging.
1891 - fix detection of older flex version and the reaction, since we do
1892 depend on modern ones (we use lex_destroy)
1893 - Better separation of SG and RL in the libs: remove all simulation code
1894 from libgras. As a result, this lib is now only 200k when stripped.
1895 Some of the xbt modules may also be duplicated (two sets and such) and
1896 should be cleaned/killed before SG3.
1897 - Insist on using xlC on AIX because of weird problems involving gcc there.
1898 - Cleanup the make remote stuff. This is now done by scripts
1899 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
1900 mainly for our private use, but we're working on changing them to user
1903 - Bugfix: flush the socket on close only if there is some *output*.
1904 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
1906 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
1909 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
1911 SimGrid (2.92) unstable; urgency=low
1913 Alpha 3 on the path to SimGrid 3
1917 - New! First try of benchmarking macros.
1918 - New! First try so that gras_stub_generator generate deployment and
1919 remote compilation helpers.
1921 - Bugfix: Initialization fix in msg_test.
1925 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
1927 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
1929 - API Change: gras_os_sleep to take the amount of seconds as a double.
1930 Accepting an int was error prone since it was the only location where
1931 seconds were coded as such. It leaded to damn rounding errors.
1932 - Bugfix: Hard to belive that timers ever worked before this.
1934 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
1936 SimGrid (2.91) unstable; urgency=low
1938 Alpha 2 on the path to SimGrid 3
1942 - Bug fix in the lmm_solver.
1944 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
1945 through the function MSG_paje_output.
1946 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
1947 - It is possible to bound the rate of a communication in MSG with
1948 MSG_task_put_bounded() (was already in the previous version but I had forgotten
1949 to write it in the changelog).
1950 - Bug fix to let GRAS run on top of MSG until we move it directly on top
1955 - Various cleanups to the autotools stuff
1956 - Begin to move Gras examples to examples/gras/
1957 - Let make distcheck work again (yeah!)
1959 - documentation overhauled using doxygen.
1960 gtk-doc-tools is dead in SimGrid now.
1961 - Automatically extract all existing logging categories, and add the list
1962 to the documentation (long standing one, to say the less)
1964 - Cleanup the known architecture table. Reorder the entries to group what
1965 should be, and use a more consistent naming scheme.
1966 (some of the test dataset are still to be regenerated)
1967 - New! Allow library to register globals on each process just as userdata
1969 This is implemented using a xbt_dict and not a xbt_set, so we loose the
1970 lookup time (for now).
1971 Use it in msg and trp.
1972 This cleans a lot the internals and helps enforcing privacy of the
1973 headers between the gras components.
1974 - New! Add a timer mechanism, not unlike cron(8) and at(1).
1975 - Bugfix: gras_os_time was delirious in RL.
1976 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
1978 - Reenable GRAS now that it works.
1980 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
1982 SimGrid (2.90) unstable; urgency=low
1984 Alpha 1 on the path to SimGrid 3
1986 * It is a long time since the last release of SimGrid. I'm sorry about
1987 that but as I had told you, I was rewriting a lot of things. I apologize
1988 to those who had been reporting bugs to me and that I had not answered.
1989 If your bug is still in the new version, please tell me. Here is a
1990 summary of the main changes.
1992 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
1993 lead by Martin Quinson. As a consequence SimGrid gains a lot in
1994 portability, speed, and a lot more but you'll figure it out later.
1995 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
1996 I wanted to release the new MSG as soon as possible and I have
1997 broken GRAS, which is the reason why, for now, only MSG is fully
1998 functional. A laconic description of these projects is available
1999 in the documentation.
2001 * REVOLUTION 2: I have removed SG and I am now using a new simulation
2002 kernel optimized for our needs (called SURF but only the developers
2003 should use it). Hence, MSG is now roughly 30 times faster and I think
2004 that by rewriting a little bit MSG, I could event speed it up a little
2005 bit more. Beside the gain in speed, it is also much easier to encode a
2006 new platform model with SURF than it was with SG. More to come...
2008 * REVOLUTION 3: I have tried to change a little as possible the API of
2009 MSG but a few things really had to disappear. The main differences
2010 with the previous version are :
2011 1) no more m_links_t and the corresponding functions. Platforms are
2012 directly read from a XML description and cannot be hard-coded
2013 anymore. The same format is used for application deployment
2014 description. The new format is described in the documentation.
2015 Have a look in tools/platform_generation. There is a tiny script
2016 that converts from the old platform format to the new one. Concerning
2017 the application deployment format, parsing the old one is tricky.
2018 I think most of you should however be able to convert your files. If
2019 it is really an issue, I can write a C code that does the conversion.
2021 2) the toolbox tbx does not exist anymore. We now have a library
2022 with much more data-structures but without the hash-tables (we have
2023 dictionaries that are much faster).
2025 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
2027 *****************************************************************************
2028 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
2029 * don't feel like converting the oldies. (Mt) *
2030 *****************************************************************************
2033 Version 2.90: "the long awaited one"
2034 - Finished rewriting and debugging MSG. Rewrote the documentation.
2035 - disable GRAS for now since it needs to be ported to the newest SG
2038 - Finish the port to windows (using mingw32 for cross-compile)
2041 - Main loop and datastructures of SURF. A cpu resource object is
2042 functional. Surf can thus be used to create cpu's with variable
2043 performance on which you can execute some actions.
2045 2004-11-15 Martin Quinson
2046 - Port to ARM. Simply added the alignment and size descriptions. Should
2047 work, but the ARM machines are so slow that I didn't had the opportunity
2048 to 'make check' over there yet.
2050 2004-11-15 Arnaud Legrand
2051 - Trace manager now written. It uses a heap structure and is therefore
2052 expected to be efficient. It may however be speeded up (particularly
2053 when many events occur at the same date) by using red and black
2054 trees. One day maybe...
2055 - Max-min linear system solver written. It uses a sparse matrix
2056 structure taking advantage of its expected use. Most operations are
2057 O(1) and free/calloc are called as few as possible. The computation of
2058 the minimum could however be improved by using a red and black tree
2061 2004-11-03 Arnaud Legrand
2062 - Rename every gras_* function that was in xbt/ to its xbt_
2064 - Add a heap and a doubly-linked list to xbt
2065 - Added a dichotomy to the dictionaries. make check works as well before
2066 so I assume that the patch is correct. I do not know however if things
2067 run effectively faster than before now. :)
2069 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
2070 SimGrid, and the version number is bumped to 2.x
2072 2004-10-29 Martin Quinson
2073 - Introduction of the remote errors.
2074 They are the result of a RMI/RPC on the remote machine.
2075 ErrCodes being scalar values, you can't get the host on which those
2076 errors did happen. Extending the error mechanism as in Gnome is possible.
2077 No idea yet whether it is a good idea.
2079 2004-10-28 Martin Quinson
2080 - Interface revolution: the Starred Structure Eradication.
2081 I used to do typedef struct {} toto_t; and then handle *toto_t.
2082 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
2083 - ???_t is a valid type (builded with typedef)
2084 - s_toto_t is a structure (access to fields with .)
2085 - s_toto is a structure needing 'struct' keyword to be used
2086 - e_toto_t is an enum
2087 - toto_t is an 'object' (struct*)
2089 typedef struct s_toto {} s_toto_t, *toto_t;
2090 typedef enum {} e_toto_t;
2091 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
2092 s_toto_t) is private.
2094 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
2095 so that it can set the variable to NULL. It was so for dicts and sets,
2096 it changed for dynars.
2098 - Fix a bunch of memleaks in dict_remove
2099 - Fix a bug in sg/server_socket opening: it failed all the time.
2101 2004-10-07 Martin Quinson
2102 - Speed up dynar lookup operation a bit.
2104 gras_dynar_get is dead.
2106 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
2107 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
2108 (which gives you the address of the stored data).
2110 gras_dynar_get_as is an helpful macro which allows you to retrieve a
2111 copy of the data using an affectation to do the job and not a memcpy.
2113 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
2114 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
2116 It does not really speedup the dynar test because they are
2117 setting elements all the time (and look them seldom). But the dict does
2118 far more lookup than setting.
2120 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
2122 2004-10-05 Martin Quinson
2123 - Allow to (en/dis)able the cycle detection at run time.
2125 Whether we should check for cycle or not is now a property of each
2126 datatype. When you think there may be some cycle, use datadesc_cycle_set.
2127 datadesc_cycle_unset allow to remove this property when previously set.
2129 Note that the cycle detection is off by default since it impacts the
2130 performance. Watch the data you feed GRAS with ;)
2132 This property is hereditary. Any element embedded in a structure having it
2133 set have it set for the time of this data exchange.
2135 You should set it both on sender and receiver side. If you don't set it on
2136 sender side, it will enter an endless loop. If you forget on receiver
2137 side, the cycles won't be recreated after communication.
2139 - Header reorganization.
2140 Kill gras_private.h, each submodule must load the headers it needs.
2142 2004-10-04 Martin Quinson
2143 - Interface revolution: do not try to survive to malloc failure.
2145 Now, gras_malloc and friends call gras_abort() on failure.
2146 As a conclusion, malloc_error is not a valid error anymore, and all
2147 functions for which it was the only gras_error_t return value are
2148 changed. They now return void, or there result directly.
2149 This simplify the API a lot.
2151 2004-09-29 Martin Quinson
2152 - Re-enable raw sockets.
2153 Created by gras_socket_{client,server}_ext;
2154 Used with gras_raw_{send,recv}
2157 It should allow to kill the last bits of gras first version soon.
2159 This is not completely satisfactory yet (duplicate code with
2160 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
2163 - Simplify transport plugin (internal) interface by not passing any
2164 argument to _server and _client, but embedding them in the socket
2167 2004-09-28 Martin Quinson
2168 - Finish the port to AIX.
2169 autoconf was my problem (segfault within the malloc replacement
2170 function. No idea why)
2172 2004-09-16 Martin Quinson
2173 - Fix some size_t madness on 64bit architectures.
2175 2004-09-08 Martin Quinson
2176 - Reduce the number of system headers loaded, overload some more system
2177 calls (such as malloc to cast the result of the system one, and work
2179 - Fix and reintroduce the config support
2181 2004-09-07 Martin Quinson
2182 - Source code reorganization to allow Arnaud to surf all over there.
2183 - Allow to document the logging categories.
2184 - Remove all uppercase from logging categories and useless cleanup in names.
2186 2004-08-18 Martin Quinson
2187 Version 0.6.2 (protocol not changed; API changed)
2188 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
2189 gras_error_t), and NULL when not found. Functions expecting a msgtype
2190 as argument (msg_wait; msg_send) deal with NULL argument by providing a
2191 hopefully usefull message.
2192 - Portability to prehistoric sparcs again
2194 2004-08-17 Martin Quinson
2195 Version 0.6.1 (protocol not changed; ABI not changed)
2196 - prealloc some buffers to speed things up
2198 2004-08-11 Martin Quinson
2199 Version 0.6 (protocol not changed; ABI expended)
2200 - The parsing macro can deal with the references, provided that you add
2201 the relevant annotations (using GRAS_ANNOTE(size,field_name))
2203 2004-08-09 Martin Quinson
2204 Version 0.5 (protocol not changed; ABI changed)
2205 - Allow to off turn the cycle detection code in data exchange at
2206 compilation time. It should be at run time, but I'm short of time (and
2207 the config stuff is still broken). That way, we keep dict out of the
2208 critical path, which is good because the performance is poor:
2209 - search not dichotomial yet
2210 - dynar give no way to access their content and memcpy everytime
2211 - In composed data description (struct, ref and so on), stop foolness of
2212 keeping the subtype's ID, but store the type itself. This keeps sets out
2213 of the critical path, which is good since they rely on dynar and
2214 dictionnaries. The only loose of that is that we cannot detect the
2215 redeclaration of a structure/union with another content (but I'm not sure
2216 the code detected well this error before anyway). We still can detect
2217 the redefinition discrepancy for the other types.
2218 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
2219 it breaks the code because of type-punning used all over the place).
2220 This breaks on all non-gcc architectures (for now).
2222 All those changes (plus the buffer of last time) allow me to gain 2 order
2223 of magnitude on cruel tests consisting of 800000 array of integers on two
2224 level of a hierarchical structure (200 secondes -> 4 secondes)
2227 - the selector of reference must now return the type it points to, not
2228 the ID of this type.
2230 2004-08-06 Martin Quinson
2231 Version 0.4 (protocol changed; ABI not changed)
2232 - Allow to pass --gras-log argument to processes in simulation mode. Really.
2233 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
2234 - Implement a buffer transport, and use it by default (it relies on tcp in
2235 real life and on sg in simulation).
2236 That's a bit hackish since I had a new field to the structure to store
2237 its data without interfering with the subtype ones. Inheritance
2238 is tricky in C. And that's a kind of reverse inheritance with one class
2239 derivating two classes. Or maybe a game with java interfaces. Anyway,
2240 that's damn hard in C (at least).
2241 Moreover, I got tired while trying to ensure plugin separation and
2242 genericity in SG mode. MSG wants me to do weird things, so let's go for
2243 cruel hacks (temporarily of course ;).
2244 See comment in transport_private.h:71
2245 - do not include all the _interface headers in private but in the files
2246 which really need them (to cut the compilation time when they are
2249 2004-07-26 Martin Quinson
2250 Version 0.3 (protocol not changed; ABI changed)
2251 - Major overhault of the datadesc interface to simplify it:
2252 - shorted the function names:
2253 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
2254 - add a trivial way to push/pop integers into the cbps without malloc.
2255 This allows to make really generic sub_type description, which simply
2256 pop their size of the stack.
2257 - add a function gras_datadesc_ref_pop_arr() which does what users want
2258 most of the time: Declare a dynamic array (which pops its size of the
2259 stack) and declare a reference to it. Poor name, but anyway.
2260 - kill the post-send callback, add a post-receive one
2262 2004-07-23 Martin Quinson
2263 Version 0.2 (protocol changed; ABI changed)
2264 - add some testing for cpbs in the test cases, and fix some more bugs.
2265 This invalidate again the little64 data file, since I cannot regenerate
2267 - remove an awfull optimization in the logging stuff, allowing me to:
2268 - understand it again
2269 - learn gcc how to check that the argument match the provided format
2270 - fix all errors revealed by gcc after that
2271 - internal keys of dict are not \0 terminated. Deal with it properly in
2272 loggings instead of segfaulting when the user want to see the logs :-/
2274 2004-07-22 Martin Quinson
2275 - Fix some stupid bug preventing cbps (callback postit) from working
2277 2004-07-21 Martin Quinson
2278 - Some documentation cleanups
2279 - remove the useless last argument of msgtype_declare
2280 - rename the Virtu functions to fit into the 'os' namespace
2281 - move headers src/include -> src/include/gras/ and stop fooling with
2282 gras -> . symbolic link
2283 - make distcheck is now successful
2285 2004-07-19 Martin Quinson
2287 - Build shared library also
2288 - Install html doc to the right location
2289 - stop removing maintainer files in make clean
2290 - build tests only on make check
2292 2004-07-13 Martin Quinson
2294 - No major issue in previous version => change versionning schema
2295 - Re-enable little64 convertion test now that Abdou kindly regenerated the
2296 corresponding dataset.
2298 2004-07-11 Martin Quinson
2300 - Get it working with any kind of structure (we can compute the padding
2301 bytes remotely for all the architectures I have access to)
2302 - Implement the structure parsing macro (still not quite robust/complete)
2303 - Improvement to the remote testing toysuite
2305 2004-07-10 Martin Quinson
2306 [autoconf mechanism]
2307 - get ride of a bunch of deprecated macros
2308 - actually run the test for two-compliment, not only compile it :-/
2309 - test whether the structures get packed (and bail out if yes. Damn.
2310 Alignment is a serious matter)
2311 - test whether the structures get compacted (but respecting the alignment
2312 constraints of each types)
2313 - test whether the array fields of structures can straddle alignment boundaries
2315 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
2316 (took me 2 hours to find that bug, looking at the wrong place)
2317 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
2318 before sending/receiving and are used to compute the offsets of fields
2319 - Given that padding size depend even on compiler options, keep track of
2320 alignment and aligned_size only for the current architecture. Not a big
2321 deal since we send structure fields one after the other (seems
2323 - Add the datastructure used for IEEE paper by the PBIO guys to the test
2324 program, let it work on linux/gcc/little32. portability todo.
2326 2004-07-08 Martin Quinson
2327 - import and improve remote compilation support from FAST
2328 - make sure make check works on half a dozen of machines out there
2330 2004-07-07 Martin Quinson
2331 Let's say it's version 0.0.3 ;)
2332 - Implement conversions (yuhu!)
2333 - Let it work on solaris (beside conversion, of course)
2334 - Stupid me, using rand() to generate the conversion datatests in not wise.
2336 2004-07-06 Martin Quinson
2337 - Let make dist work, since I'm gonna need it to compile on remote hosts
2338 - Let Tests/datadesc_usage write the architecture on which the file was
2339 generated as first byte.
2340 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
2341 architecture descriptions.
2342 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
2343 on those architectures.
2344 - Optimization: send/recv array of scalar in one shoot
2346 2004-07-05 Martin Quinson
2347 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
2349 - Plug a whole bunch of memleaks
2350 - each process now have to call gras_{init,exit}. One day, their log
2351 settings will be separated
2352 - Continue the code factorisation between SG, RL and common in Transport.
2354 2004-07-04 Martin Quinson
2356 - Redistribution between SG and RL.
2357 We wanna have to accept in SG, so move accepted related parts of RL in
2358 the common part. (more precisely, the dynar of all known sockets is no
2359 more a static in transport.c, but part of the process_data)
2361 [gras_stub_generator]
2362 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
2364 2004-07-03 Martin Quinson
2365 - Create a new log channel tbx containing dict, set, log, dynar (to shut
2366 them all up in one shot)
2368 - Fix the ugly case of reference to dynamic array.
2369 - New (semi-public) function gras_datadesc_size to allow the messaging
2370 layer to malloc the needed space for the buffer.
2372 - gras_socket_close now expect the socket to close (and not its address to
2373 put NULL in it after it). This is because the socket passed to handlers
2374 is one of their argument (=> not writable).
2376 - propagate the interface cleanup from last week in datadesc, ie remove a
2377 superfluous level of indirection. User pass adress of variable
2378 containing data (both when sending and receiving), and not of a variable
2379 being a pointer to the data. Let's say that I like it better ;)
2380 The price for that is constructs like "int msg=*(int*)payload" in
2381 handlers, but it's a fine price, IMHO.
2383 - Let it work in RL (yuhu)
2385 2004-06-21 Martin Quinson
2387 - porting SG plugin and SG select to new standards (works almost).
2388 - plug memleaks and fix bugs around.
2391 - cleanup the prototype of data recv and force users to specify when they
2392 want to handle references to objects. Test case working even for cycles.
2393 - plug memleaks. Valgrind is perfectly ok with this.
2395 2004-06-12 Martin Quinson
2397 - cleanup the separation between plugin and main code in plugin creation
2399 2004-06-11 Martin Quinson
2401 - Reput hook for raw sockets, needed for BW experiments
2402 - kill a few lines of dead code
2403 [Data description] Interface cleanup
2404 - gras_datadesc_by_name returns the searched type or NULL.
2405 That way, no variable is needed to use a type desc once, which makes
2407 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
2408 two parameters were strings (field name, type name), leading to
2410 [Dicos] Interface cleanup
2411 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
2412 This is consistant with the dynar API.
2414 2004-04-21 Martin Quinson
2416 - Porting to new standards.
2418 - interface cleanup.
2419 There is no bag anymore, no need to take extra provision to mask the
2420 pointers behind "ID".
2421 Better splitup of functions between files create/exchange/convert.
2422 This is still a bit artificial since convert and receive are so
2423 interleaved, but anyway.
2425 - add a queued message list to procdata (the ones not matching criteria
2427 - factorize some more code between SG and RL wrt procdata
2429 - use gras_exit in example to track memleaks
2430 - get rid of gs_example now that GS is properly integrated into gras
2431 - update run_test to integrate the latest tests (datadesc)
2433 - rename WARNINGn macros to WARNn since it prooved error-prone
2435 2004-04-19 Martin Quinson
2437 - register init/exit functions within gras module mechanism
2438 - send/receive function.
2439 Convertion is not implemented, but short-cutted if not needed.
2440 struct/array elements are sent one by one (instead of block-wise), but
2441 nobody really cares (yet). Get a prototype before optimizing.
2442 - tests (using a file socket) for DD send/receive on:
2443 - base types: int, float
2444 - array: fixed size, string (ie ref to dynamic string)
2445 - structure: homogeneous, heterogeneous
2446 - chained list, graph with cycle
2447 Believe it or not, valgrind is not too unhappy with the results. The
2448 cycle happily segfaults, but the others are ok. And I'm sick of pointers
2452 - Bugfix when using a filename explicitely (instead of '-')
2454 2004-04-09 Martin Quinson
2456 - factorize more code between RL and SG in socket creation
2457 - Complete the implementation and tests of:
2459 o file (only in RL, and mainly for debugging)
2461 I lost 3 days to design a portable address resolver, and then decided
2462 that the prototype mainly have to run on my box.
2463 Addressing portability too early may be like optimizing too early :-/
2465 - use gras_init in the Tests instead of the crappy parse_log_opt
2466 (the latter function is removed)
2467 [Conditional execution]
2468 - New functions: gras_if_RL/gras_if_SG (basic support for this)
2469 [Code reorganisation]
2470 - Get rid of libgrasutils.a since it makes more trouble than it solves.
2471 Build examples against the RL library, since there is no way to disable
2472 its creation for now.
2474 For information, the beginning of coding on GRAS was back in june
2475 2003. I guess that every line has been rewritten at least twice since