1 SimGrid (3.8) NOT RELEASED; urgency=low
3 The "SimGrid makes psssshiiiit and jumps into the cloud" release.
6 * Add an experimental interface to manipulate VMs. They are mainly
7 process groups with very few intrinsic semantic, but they should
8 allow you to build the semantic you want easily.
9 * New function: MSG_host_set_property_value()
10 * Deprecate functions MSG_global_init() / MSG_global_init_args()
11 Please use MSG_init() instead. (reducing the amount of entry
12 points in the library helps us).
13 * Make it impossible to link against the wrong version of the lib
14 * Bug fixes that made the host (and link) failures unusable.
15 * Add a way to auto-restart process when the host in which they are
16 executing comes back (ON_FAILURE="RESTART" on deployment file,
17 MSG_process_auto_restart_set).
18 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
19 please stop using the old ones, they are DEPRECATED.
20 * Deprecate MSG_clean(). No need to call it anymore.
21 * Function MSG_get_host_number() is not deprecated anymore.
24 * Split the doc into a user guide and a reference guide.
25 * Start a developper guide to help people hacking on SimGrid.
28 * Remove option custom_flags. Now use environment variables CFLAGS
30 * Enable tracing by default. This modules rocks you should use it.
31 * Use default cmake things to detect lua instead of home grown ones.
32 * New option "enable_mallocators" to disable mallocators, for debugging
33 purpose ("on" by default).
36 * Bug fixes around the resource failures: don't let the processes
37 survive the host they are running onto.
38 * Add an interface to execute cleanup functions when a process is killed,
39 to avoid memory leaks.
40 * Add an interface to auto-restart processes when the host in which they are
42 * Ensures that SIMIX_clean is called automatically. It's not part of
43 the public interface anymore (bindings should be updated).
46 * Bug fix for when SD_Simulate is called with a positive value: be careful
47 when comparing doubles. Sometimes they are different for non significant
49 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
50 parallel task whose initial work is distributed among host according
51 to the Amdahl's law. Such tasks are created with a parameter alpha
52 that corresponds to the non-parallelizable part of the computation.
53 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
54 between two sets of workstations assuming a 1D block distribution (each
55 workstation owns a similar share of data) on both sides.
57 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
58 Data redistribution will be automatically scheduled once parent and child
59 are both scheduled. The filling of computation_amount and
60 communication_amount structures is now done seamlessly thanks to the chosen
62 * New function SD_workstation_dump to display various information
63 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
64 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
65 bandwidth on the route onto which the task is scheduled and the amount of
67 To divide the nominal bandwidth by 2, the rate then has to be :
68 rate = bandwidth/(2*amount)
69 * Compute tasks that have failed can now be rescheduled and executed again
70 (from their beginning)
71 * Increasing source code coverage (src/simdag is now covered at 95.8%
75 * Re-implement time-independent trace replay using SMPI (at the
76 smpi_smp_* level) instead of MSG. This should replace
77 examples/msg/actions/actions.c
78 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
80 * Implement the exchange of non-contiguous data.
81 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
82 * Correct behavior of smpi/sender_gap and set its default value to 0
83 * Add option to asynchronously send small messages to allow better
84 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
85 specifies the size in bytes under which messages will be asynchronously sent.
86 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
87 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
91 * Export a sg_cmdline dynar containing all the arguments we got from
95 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
96 and renamed to xbt_str_hash() and xbt_str_hash_ext().
97 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
98 * Greatly improve the robustness of mmalloc to user errors (such as
99 using an area after freeing it, or freeing it twice)
101 -- $date Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
103 SimGrid (3.7.1) stable; urgency=low
106 * Restore the prototype of MSG_process_create_with_environment() to
107 the pre-3.7 situation by removing the kill_time argument.
108 * Add a MSG_process_set_kill_time() function instead.
111 * Fix weird behaviors when dealing with parallel tasks.
114 * Simgrid is now built as a dll.
115 * Simgrid-java now works on Windows.
116 * Simgrid-Java is now included into Windows package.
119 * First pre-build package for MacOSX.
122 * Fix compilation when using MSG_USE_DEPRECATED.
123 * Fix some compilation issues on Macs and Windows.
124 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
125 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
127 We discovered that the Lua console is broken, but we are missing the
128 manpower to fix it right now. The problem existed in 3.7 too, so we
129 are not blocking the release for that. Sorry if you depended on this
130 feature, any help would be really welcome.
132 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
134 SimGrid (3.7) stable; urgency=low
136 The "spring cleanups (before the next Big Project kicks in)" release.
139 * We can specify the SMPI latency/bandwidth factor with command line
140 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
141 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
142 You can also use the "config tag" from platform file by adding this line
143 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
144 (see "example/platforms/tag_config.xml" to use "config tag").
145 Note that the command line supersedes the platform file configuration.
146 * Change the correction factors used in LMM model, according to
147 the latest experiments described in INRIA RR-7821.
148 Accuracy should be improved this way.
149 * Use the partial invalidation optimization by default for the
150 network too. Should produce the exact same results, only faster.
151 * Major cleanup in surf to merge models and split some optimization
152 mechanisms from the core of the models. As a result you can now
153 specify which model to use (e.g., --cfg=network/model:LV08
154 --cfg=cpu/model:Cas01) and which optimization mode to use
155 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
156 Incompatible combinations should err at initialization. See
157 --help-models for the list of all models and optimization modes.
158 * The CLM03 workstation model was dropped for simplicity because it
159 used the deprecated CM02 network model. Use default instead.
160 * Rename the TCP_gamma configuration option to network/TCP_gamma
161 * Rename the coordinates configuration option to
162 network/coordinates, and document it
163 * Use now crosstraffic keyword instead of the terribly misleading
164 fullduplex keyword. It is activated by default now in the current
165 default model, use --cfg=network/crosstraffic:0 to turn it off.
166 * Ongoing refactoring the model parsing to make XML files optional
167 See include/simgrid/platf.h for details (still to be completed)
170 * Major overhaul of the documentation. Almost instructive now :/
171 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
172 functions and friends. This interface was considered as
173 deprecated since over 2 years, it's time to inform our users that it is.
174 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
175 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
176 use these (crappy) functions in your code.
177 These functions will be removed soon. Stop using them now.
178 * Deprecate MSG_get_host_{table,number}
179 Implement MSG_hosts_as_dynar() instead.
180 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
181 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
184 * Stabilize the parallel execution mode of user contexts
185 * Introduce configuration variables to control parallel execution:
186 - contexts/synchro: Synchronization mode to use when running
187 contexts in parallel (either futex, posix or busy_wait)
188 - contexts/parallel_threshold: Minimal number of user contexts
189 that must be part of a scheduling round to switch to parallel
190 execution mode (raw contexts only)
191 * Fix bugs that prevented to use suspend/resume along with
192 synchronization structures.
193 * Fix bugs in process termination that lead to invalid memory access
194 in very specific conditions.
197 * Introduce a parallel mode for the models (controlled by surf/nthreads
198 configuration item). In our tests, running the models in parallel
199 never lead to any speedups because they are so fast that the gain
200 of computing each model in parallel does not amortizes the
201 synchronization costs, even when ultra fast futexes are used.
202 This is released anyway because YMMV.
205 * Performance boost by using a swag internally to compute the set of
206 tasks that are finished and should constitute the return value of
210 * Enable it by default now that it is considered rather stable.
213 * Documentation of the tracing functions.
214 * Performance gains when tracing categorized/uncategorized resource
215 utilization by avoiding calls to get route when updating resource
216 variables. LMM constraints are being used instead.
217 * API changed to set task categories. Use MSG_task_set_category instead
218 of TRACE_msg_set_task_category, and SD_task_set_category instead
219 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
220 * Bugfix for graphicator, routes not correctly obtained, memory leaks
221 * Examples for link user variables added (see at examples/msg/tracing/)
222 * Deprecated function TRACE_msg_set_process_category completely removed
223 * Trace header updated according to the latest Paje file format
224 * Tracing network lazy updates, no longer obligate users to use full updates
225 * --cfg=tracing/platform:1 also registers power/bandwidth variables
226 * Experimental: let user code declare/set/push/pop application states for hosts
227 * API changed to allow the manual creation of graph configuration files
228 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
231 * Improve the API of Lua MSG bindings, using the Lua spirit.
232 * Each simulated process now lives in its own Lua world (globals are
233 automatically duplicated). It helps writing simulators. Will allow
234 to run Splay programs within SimGrid in the future.
235 * Add a Chord example in Lua, equivalent to the MSG one.
238 * Start the implementation of a solution to express temporal
239 properties, not only local assertions. This is still an
240 experimental work in progress, stay clear from it to be safe.
244 - Add new runtime parameters --help-logs and --help-log-categories
245 to display informations about supported logging parameters and
247 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
248 don't exists anymore.
249 * Mallocators: allow value NULL for the reset function.
251 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
252 create homogeneous dictionaries, where all the elements share the
253 same free function. Non homogeneous dictionaries will be
254 deprecated in the next release.
255 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
256 - Multi-level dictionaries are deprecated.
258 - new function xbt_dynar_search_or_negative() that is useful when
259 you have less than 2 million elements in your dynar and don't
260 want of the extra complexity of catching exceptions when the
261 element is not found.
263 - Make xbt_os_thread module (for thread portability) public.
264 Documentation is still to come, sorry.
266 - Cleanups and simplifications to make it maintainable again.
267 - Exotic features (such as memalign and valloc) were removed.
268 - The metadata were extended and improved so that the
269 model-checker becomes able to explore and inspect the heaps.
270 - This may induce a performance drop when enable_model-checking is
271 ON in cmake (even if it's not used in the simulation), but it is
272 necessary at this point to get MC working.
274 Turn model-checking OFF if simulation performance matters to you.
275 Not enabling it at runtime is not enough, disable it in cmake.
277 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
279 SimGrid (3.6.2) stable; urgency=low
281 The "Not coding new stuff allows to polish old things" release.
284 * New bindings to the NS3 packet level simulator (experimental)
285 * Use the raw (efficient) execution contexts instead of the sysv
286 (portable) ones when possible.
287 * libpcre is now mandatory in any cases since not using it led to
288 severe performance loss and possibly other issues
289 * Update the XML platforms:
290 - G5K: include the latest machine in Nancy
291 - GridPP and LCG: new platforms
292 * Documentation was partially updated, at least (more to come)
294 Bug fixes, cosmetics and small improvements
295 * Free terminated processes before the end of the simulation to avoid
296 exhausting the memory of users having very dynamic amount of
298 * Bug fix and cosmetics about canceling non-running tasks
299 * Bug fix about the dot loader's issues when using libcgraph
302 * Create an installer for windows with nsis (amd64 and win32)
303 - Add an hello world project to illustrate simgrid project creation.
304 - Embed libpcre into the Simgrid installer to avoid
305 its compilation burden
306 * The raw execution contexts should work on Apple now
307 * Port to Windows 64 bits
308 - Sysv contexts now have an implementation for this arch
309 - GRAS communication features now support this arch
310 * Drop support for borland compiler on windows
311 - this code was not maintained, and we kinda depend on gcc nowadays
312 * Fix portability issues on kfreebsd/gnu: build error about semaphores
313 * Fix portability issue on unstable ubuntu: linker became picky on
316 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
318 SimGrid (3.6.1) stable; urgency=low
320 The "Oops, we broke Macs too" release
323 * Fixed contexts detection so that raw ones are used when possible
324 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
325 leads to a strange error, with user code segfaulting sometimes when
326 the generated code is not perfectly aligned (which is not
327 controllable from the user side, depends on the amount of code)
330 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
332 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
334 SimGrid (3.6) stable; urgency=medium
336 The Summer Release, also known as the "OMG! They Killed Kenny!" version
339 * Bindings now constitute their own package, separated from the main one.
340 Rationale: reduce our maintenance nightmare by reducing the module coupling
341 They will soon be released on their own on gforge.
343 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
344 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
346 GRAS: It is not considered as stable anymore, but experimental. Sorry.
347 * It's not quite deprecated for now because we have no replacement,
348 but it may soon become the case.
351 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
352 * Fortran: New user-level cache variable to store the rank of the running
353 process. This improves performance by an order of magnitude.
354 * C: New coccinelle script to automatically locate and modify global and
355 local static variables.
356 * Improved SMPI network model with a sender-side gap to account for multiple
360 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
361 only say if a communication is finished, no matter whether it succeeded or
362 failed. You can call MSG_comm_get_status() to know the status of a finished
364 * New function MSG_task_dsend() to send a task and detach it. When a
365 communication is detached, you are never notified of its success or failure
366 and the memory is released automatically once it is finished. This function
367 is useful when you don't care about the end nor the success of a
369 * Change the prototypes of action replay. Sorry for inconvenience,
370 but this is really more efficient this way (and to adapt your code,
371 you just have to fix the initialization, that shouldn't be too long)
372 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
373 ever managed to do anything useful with it.
374 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
375 takes a dynar of communications. It returns immediately and gives the
376 index of a finished communication (if any).
377 * New example: a basic implementation of the Chord P2P algorithm.
380 * New model for multi-core CPUs. You can now use the core attribute to
381 precise the number of cores of a host. This is a basic model. Every
382 process running on the host receives at most the power provided in
383 the DTD (throughput<=power). Total throughput of process cannot exceed
385 * New peer tag. This peer tag creates a tiny AS comprising a host and a
386 router linked by an up-link and a down-link (possibly asymmetrical).
387 This kind of pattern allows to easily build last-mile model style platforms.
388 Aggregating such patterns in a rule-based AS is thus the technique of
389 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
390 * New model for Vivaldi routing. We transformed the Vivaldi network model
391 into a Vivaldi routing model (based on the rule-based model). This allows to
392 combine Vivaldi based latencies with last-mile platforms.
395 * Added a check for NaN of IEEE754 infinite in the double entries of
397 * Introduce a new context factory "raw", highly inspirated from the
398 ucontext factory, but using manually crafted functions in assembly to
399 do the work in an efficient manner.
400 * Allow to change the used context factory at run time, not only at
401 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
402 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
403 contexts at runtime (only with raw contexts or ucontexts).
404 * Completely rewrote this module to allow parallel execution of user
405 processes. Use --cfg=contexts/nthreads:N to execute user processes
406 with N parallel threads (the default is 1, meaning no parallelism).
407 * Allow to decide dynamically between sequential and parallel modes.
408 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
409 processes in parallel only when their number is greater than or equal to P
411 * Added a check for NaN of IEEE754 infinite in the double entries of
415 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
416 won't output the state of processes when interrupted with Ctrl-C
417 * Add a new function xbt_dynar_to_array that transforms a dynar into a
418 NULL-terminated array. This may solve backward compatibility issues
419 due to the change to return type of SD_simulate. See also:
420 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
421 * Add new macros with variable number of arguments.
422 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
423 - in xbt/asserts.h: xbt_assert
424 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
425 - in xbt/ex.h: THROWF and RETHROWF.
426 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
428 * Change xbt_die() to accept a format string with arguments, just like printf.
429 * New data structure: xbt_lib_t, like a dict but more general and with better
433 * New configuration options
434 Options triva/categorized and triva/uncategorized can be used to generate
435 graph configuration files for Triva visualization tool.
436 * Configuration option tracing/platform is renamed to tracing/categorized
437 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
438 * New TRACE_user_link_variable interface:
439 User provides the name of the link and the tracing variable to attach to it
440 * the declaration of tracing categories must be done after the environment
442 * simpler tracing interface, just one way to declare categories
443 TRACE_category or TRACE_category_with_color, it is up to you
444 * links in the trace file are again identified by their names
445 * trace contains the full platform hierarchy exactly as declared using the ASes
446 * Options tracing/msg/[task|process]:1 groups the process by hosts
447 for both cases, tasks and processes must have names that are unique during the simulation
448 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
449 * The experimental option tracing/msg/volume is deprecated
450 its functionality may be reincorporated if needed
452 The tracing generates a trace file with unordered timestamped events,
453 because of the way the core simulator (surf) works. A script available
454 at the tools directory (fix-paje-trace.sh) can be used to put the events
455 in order. We have changed the tracing so it can generate ordered timestamped
456 events in the final trace, but depending on the simulator (and how much time
457 is simulated) that can lead to a huge memory utilization. It is deactivated
458 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
461 * Define a SIMGRID_VERSION macro in simgrid_config.h.
462 - We are trying hard to keep the API stable, but it may happen that
463 some things change (we're a research project after all, not a
464 nuclear plant operating system). If such things should happen, you
465 could rely on that macro to adapt.
466 - current value: 30600 for 3.06.00, aka 3.6
467 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
468 a number that can be compared with SIMGRID_VERSION.
469 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
470 assertions and verbose/debug logging events are disabled at compile time.
472 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
474 SimGrid (3.5) stable; urgency=medium
477 * New feature to any SimGrid-based simulator: Model-Checking
478 Check SIN#1 for more details.
481 * New Model SMPI (three-interval linear regression for correction factors)
482 See RR-7426, available at http://hal.inria.fr/inria-00527150
483 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
484 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
485 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
486 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
487 * See also src/smpi/README
492 - Tracing API changes: TRACE_start and TRACE_end should not be called
493 by user-code. They are automatically called by simulators created
494 with SimDAG, MSG and SMPI if the toolkit is compiled with
495 tracing_enabled=ON. Categories declaration and utilization remain the
496 same for MSG and SimDag.
497 - A function was added to the tracing API to declare categories with
499 - TRACE_category_with_color (char *category, char *color)
500 where color must be in the following format
501 "%f %f %f", red, green, blue
502 and red, green, blue are float values in the interval [0, 1]
503 - User can specify NULL as color parameter, or continue calling
505 On that case, the tracing system will define random colors
506 - The following command-line options are supported:
507 --cfg=tracing/filename:msg.trace
508 --cfg=tracing:1 (activate tracing, needed to use others)
509 --cfg=tracing/platform:1 (categorized resource use)
510 --cfg=tracing/uncategorized:1 (uncategorized resource use)
511 --cfg=tracing/msg/task:1 (task creation)
512 --cfg=tracing/msg/process:1 (process creation, migration)
513 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
514 --cfg=tracing/smpi:1 (SMPI interface tracing)
515 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
516 - examples of examples/msg/tracing updated
518 - DAXLoader and DOTLoader functions can generate tasks with categories
519 - A new function to attribute a category to SD tasks:
520 TRACE_sd_set_task_category (SD_task_t task, char *category)
521 * Tracing the MPI interface implemented by SMPI
522 - Collective operations are traced with states
523 - Point-to-Point operations are traced with states/links
524 - Tracing activated by a parameter "-trace filename" passed
525 to smpirun during execution (considering that simgrid
526 is compiled with tracing enabled)
527 - To run the simulation with gdb, the simulator
528 accepts --cfg=tracing/smpi:1 to trace SMPI
529 - tesh files to check if smpi tracing is ok
530 - See examples/smpi/NAS/DT-trace
531 * GTNetS tracing re-worked
532 - adaptation to the tracing system of GTNets to cope
533 with modifications regarding the fullduplex mode
534 - new tesh files to check if gtnets tracing is ok
537 * Asynchronous communications through the functions:
538 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
539 * New function: MSG_load_platform_script()
540 to make possible using a lua script instead of XML files to set up platforms
541 * New function: MSG_set_function
542 to associate functions to processes, used when bypassing the parser
543 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
545 Platforms: Add some more examples in examples/platforms
546 * Grid'5000: see www.grid5000.fr
547 * *_30000_hosts.xml: various huge files [mainly scalability testing]
550 * Change the XML format. This is a very important modification. SimGrid
551 3.5 introduces a new hierarchical format based on the notion of
552 Autonomous Systems. Compatibility with old format is ensured
553 through the perl script provided in the install bin directory
554 bin/simgrid_update_xml.
555 It is now possible to build platforms with specific routing
556 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
557 connect several platforms together. We will try to provide soon
558 set of realistic platforms exploiting these properties (have a
559 look at examples/platforms/ for the moment).
560 * Take the opportunity of the XML format change to be a good XML citizen:
561 rename link:ctn to link_ctn and similar changes (also dealt with by
563 * Add a new routing scheme (rule-based) using regular expressions. It
564 enables to have an extremely low memory footprint when the
565 underlying routing is simple and can be compactly described. You
566 need to have libpcre4-dev (perl regular expressions) installed if
567 you want to use this routing scheme.
568 * Revive the cluster TAG and allow to easily and efficiently (both in
569 term of memory and speed) connect clusters together. Have a look
570 at teshsuite/simdag/platforms/ to see how this can be done. With
571 this tag, you can create clusters with thousands of tasks at no
572 cost (have a look at examples/platforms/).
573 Note: clusters are implemented as ASes, so there is no need for an
574 enclosing AS tag if you have only one cluster in your platform.
575 * Add new generic functions in the public interface that allows the user
576 to call SURF 'create_resource' methods from your code (same
577 functionality as the XML bypass mechanism but with a much lighter
579 * Add a new model (enabled through command line --cfg=network/model:SMPI)
580 that uses a piecewise linear approximation to produce better
581 results when exchanging small messages.
582 * Add a new parameter to handle correctly full duplex link and account
583 for interferences between uplink and downlink communications
584 (activate with --cfg=fullduplex:1).
587 * Rename the SD_READY (all dependencies are satisfied and task is
588 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
589 dependencies are satisfied) state.
590 This prevents a confusion between the notion of "ready to schedule"
591 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
592 simulated" (SD_RUNNABLE) used by the simulation kernel.
593 * Change the way a task is considered as ready. Instead of removing
594 dependencies when a task is done, a counter is decreased. This way,
595 it is always possible to reach ancestors thanks to the
596 SD_taks_get_parents function (even after the end of the simulation.)
597 * Change the return type of SD_Simulate from (SD_task_t*) into
598 xbt_dynar_t. This function was in handling a dynar internally and
599 converted it into a NULL terminated array for historical reasons.
600 * New function SD_dotload(char*) to load a DAG described in dot
601 format. This loader and the corresponding examples require the
602 installation of the graphviz library.
603 * Fix a bug in the management of tasks of size 0 in the surf network
604 models. This problem was only visible with SIMDAG and you should
605 thus disregard results produced with earlier versions if you
606 relied on this feature (some tasks were blocked because of this).
607 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
608 even though your applications were doing only point-to-point
609 communications and sequential computations. Now you can really use any
610 model you want (of course, if you create real parallel tasks, which are
611 not implemented in most models beside ptaskL07, this will abort).
612 * Add an example that schedules a DAX on an heterogeneous platform
613 using a Min-Min strategy.
614 * New function SD_workstation_get_current_task() that returns the kind
615 of task currently running on a workstation in the sequential access
617 * Raise some warnings when unexecuted tasks remains at the end of the
618 simulation. This is usually caused by cycles in the DAG.
621 * New function: SIMIX_process_set_function() called by MSG_set_function
622 * Change the underlying waiting queue in semaphores so that a process
623 can wait on several of them simultaneously (as in waitany).
624 * Fix the way to handle tokens in semaphores so that all access patterns
625 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
626 * kill the dirty pimple SIMIX_message_sizes_output()
627 Please use (proper) visualization instead
630 * New data container: setset (set of sets of elements)
631 * New module: mmalloc (mapped malloc, allowing to have several
632 independent segments of malloc)
633 * New function: xbt_dict_cursor_set_data()
634 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
635 * New function: xbt_dynar_is_empty()
636 * New function: xbt_fifo_get_last_item()
637 * Fix xbt_dynar_shrink(): use the right element size.
638 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
639 uninitialized areas during expand.
640 * Fix semaphores: previous implementation was severely broken.
641 * Use library init/fini functions for our initialization.
642 - you can use logs and other feature as soon as you want in your
643 code (even before the xbt_init / MSG_init)
644 - xbt_exit is now a no-op and produce a warning when used.
647 * Port GRAS to new SIMIX mechanisms. This allows gras users to
648 benefit from the latest improvement to the simulation kernel.
649 * Kill measurement sockets for now. If you rely on them, sorry. This
650 release is not for you. This feature will be reintroduced in the
651 future, but we cannot delay the release any further.
652 * New function: gras_msgtype_get_name().
653 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
654 * Fix (at last) the pmm example: it should not randomly fail anymore.
656 Build chain: bug fixes and overall polishing
657 * Cmake is now stable enough. Hence, we killed the autotools.
658 * Port to windows ( TM :)
659 * Fix the 'make install' target.
660 No need to use 'make install-simgrid' anymore
661 * Introduce a 'make dist' target compiling a *source* archive
662 'make package' compiles a binary archive
663 * Compile java files only on need
664 * Add --cd and --setenv command line options to tesh
665 * Out of source builds are not fully supported yet, but we are close
666 * Enable supernovae and optimization flags by default for our users
669 * Add layer to set up environment directly from lua, without XML.
670 * The effect of gras_stub_generator can be achieved through
671 lua too (check examples/gras/console/ping_generator.lua)
673 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
675 SimGrid (3.4.1) stable; urgency=low
677 The "Polishing easter eggs is probably a good idea" release.
678 This is a bug fixes release only.
682 * Fix a bug preventing the tasks from begin garbage collected.
685 * Fix a bug occuring when a host involved in a communication fails.
686 This was not detected properly by the other peer involved in the
687 communication. Now, it's reported as a network error.
690 * Warn the user about loop dependencies in data flow of DAX files
691 * Obey the control-flow dependencies of DAX files
694 * Add option "enable_smpi" allowing to not compile SMPI.
695 Probably useful for the (Mac) users experiencing a build error here
696 * Improve the detection of lua5.1 and ruby1.8
698 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
700 SimGrid (3.4) stable; urgency=low
702 The "Easter in Cargese" release. Also known as (major changes):
704 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
705 ~> bindings were greatly improved
706 ~> new tracing infrastructure for better visualization introduced
708 * the "Welcome to configury modernity" release.
709 ~> we switched from autotools to cmake, and improved our cdash
712 A more detailled list of changes follow (full detail in svn log).
714 Java Bindings: Various Cleanups
715 * (install java-gcj-compat-dev on debian-like to use them)
716 * Remove put/get: no need to export deprecated interface in Java
717 Use send/receive instead.
718 * Cleanup the examples and add a README per directory
719 * Remove example autoDestination (that's the only way to go now)
720 * Remove example explicitDestination (was a plain copy of basic)
721 * Make JniException a runtime exception, so that there is no need to
722 declare the fact that you may encounter such a beast. I guess that
723 nobody will ever want to survive such error.
724 * Create specific errors for each MSG case of failure:
725 host failure, transfer failure, timeout, task cancelled
726 * Cleanup the exceptions that may get thrown by each function
727 * Other internal cleanups in Java bindings. Performance still bad :/
728 Ruby and Lua Bindings: create them
729 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
730 * That's new and great, you should try them out.
731 Same functionalities than Java bindings, only even less polished
733 * Kill the useless "rate" argument of SD_task_get_execution_time()
734 Everyone used to provide -1 as a value, it was not used, and the
735 semantic of a possible use wasn't even clear.
736 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
737 either as comm costs or compute costs to mean that there is no
738 such thing for that specific task.
739 * Add a SD_task_set_name() function
740 * Fix SD_task_unschedule() on typed tasks
741 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
742 * In DAX loader, accept useless 'level' attributes to <job> since
743 LIGO DAGs have them (seem to be to ease graphical representation).
745 * Add an example masterslave_mailbox.c using send/receive and not
746 the deprecated put/get interface.
747 * Kill the MSG_paje_output() function. It's a noop since 2 years.
748 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
750 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
751 (declare MSG_USE_DEPRECATED to still have the old name)
752 * Add a MSG_task_set_data() function
753 * About trace replay (see examples/msg/actions):
755 - Allow to work with splitted trace files for each process
756 Give the specific trace file as argument of each process,
757 and call MSG_action_trace_run(NULL)
758 You can still have one merged file for all processes.
759 - Fix implementation of collective operations
760 * Allow task_execute() on 0-sized tasks (closes #10063)
762 * This is the first release of SimGrid where SMPI is not considered
763 beta anymore (even if some corners should still be improved)
764 * Port over the new SIMIX_network submodule (internal refactoring)
765 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
766 * Implement more missing elements of the standard:
768 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
770 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
771 MPI_Scan() MPI_Get_processor_name()
772 - Added implementation of missing case for Alltoall (warning: it's
773 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
774 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
775 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
776 SMPI_MPI_Allgatherv()
778 - MPI_Waitsome() was broken
779 - Allow relative includes in smpicc
780 - Command line cfg argument 'reference_speed' was ignored...
781 - Some functions did not properly lead to auto-benching of user code
782 - smpicc passes -O2 by default (just like openmpi one)
784 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
785 * Bug fixes about timeouts during communications
786 * add SIMIX_message_sizes_output() as a pimple to write to file the
787 amount of messages per size. Use gnuplot to get histogram.
788 Pimple because that's the only user-visible function of simix,
789 defined directly in xbt.h (irk, sorry)
791 - Add a SIMIX_sem_get_capacity() function
792 - Fix interactions with processe resume/suspende
793 - release_forever() was stupidly broken
794 - Fix SIMIX_display_process_status() for processes in a semaphore
795 - Make SIMIX_sem_block_onto() user-visible
796 * Refactoring context stuff:
797 - Use pseudo-OOP for better modularity
798 - reimplement SIMIX_process_kill() without process_schedule() so
799 that the latter can take as invariant that it is called from
801 - Merge context_start into context_new for sake of simplicity
803 * Add a Vivaldi network model, coded live during SUD'10 ;)
804 * Rename configuration variables to start a hierarchy:
805 o cpu_model -> cpu/model
806 o network_model -> network/model
807 o workstation_model -> workstation/model
808 * New configuration variables:
809 o network/bandwidth_factor: correction to bandwith
810 o network/latency_factor: correction to latency
811 o netwotk/weight_S: correction to the weight of competing streams
812 * Add a long description to the models, that users can see with such
813 argument on the command line: --cfg=cpu/model:help
814 * --help-models display the long description of all known models
816 * config: add the ability to set a default value after registration
817 Does not override any previously set value (e.g. from cmd line)
818 * dict: allow to have integer key and data.
819 When so, you need to use the following functions
820 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
821 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
822 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
823 In contrary to regular dicts, the key is not malloced before copy.
824 Mixing scalar and regular elements in the same dict is not tested
826 * Allow to use xbt_dynar_shrink() to expend the dynar instead
827 Tracing for Visualization:
828 * SimGrid is now instrumented in order to generate a trace file for
829 visualization analysis: to use it, need to compile SimGrid with the
830 "tracing" option enabled, and instrument the program using SimGrid with
831 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
832 (among other functions).
833 * The instrumentation only traces the platform utilization for now
834 * Documentation to use the tracing functions and how to analyze the
835 traces with the Triva tool is written.
836 * More information about: SimGrid FAQ (in the section Tracing Simulations
839 * We moved to cmake as default build system. Autotools support will
840 be dropped soon. Check the FAQ for more info about how to use it.
841 * Greatly improved our cdash/ctest interactions
842 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
843 * Added memory checking tests with valgrind; lot of memleak fixing.
844 This may be the first release of simgrid with so few memory issues
845 * Added code coverage tests.
846 Our coverage is still improvable, but at least we see it on cdash.
848 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
850 SimGrid (3.3.4) stable; urgency=low
852 The "Desktop Grid needs love too" release (also called Xmas release).
855 * Major speedup in the maxmin system solving by using lazy evaluation
856 Instead of solving completely the maxmin system at each iteration,
857 only invalidate (and recompute) the modified parts.
858 This new feature is enabled in default models but you can try to
859 turn it on with "--cfg:maxmin-selective-update=1" for other models.
860 * Cas01 IMproved as default CPU model
861 This CPU model is the same Cas01 model, but it uses the
862 maxmin-selective-update flag and a heap structure to manage
863 actions on SURF kernel.
864 It reduces the complexity to find the next action to finish and,
865 consequently, it's faster than the old Cas01.
866 This is the new default CPU model (Cas01).
867 * Rename the old Cas01 model to Cas01_fullupdate
868 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
869 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
870 * CpuTI (CPU Trace Integration)
871 A new CPU model whose objective is simulate faster when using
872 availability trace files.
873 Instead of using a full featured, over engineered maxmin system for
874 CPU modeling, this model does the pre-integration of traces files
875 to calculate the amount of CPU power available, and so, executes
876 faster than the old CPU models.
877 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
878 * Use LV08 as default network model since it gives better accuracy
879 for small messages and shouldn't change things for big ones.
880 Use --cfg=network_model:CM02 to get the previous behavior.
883 ******************************************
884 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
885 ******************************************
886 * The new CPU model may changes simulations!
887 The point is that events occurring at the exact same timestamp
888 are not scheduled in the same order with the old and new
889 version. This may be enough to completely change the execution
890 of simulations in some cases.
891 * The new network model will change simulations!
892 This new model is more realistic than the previous one, so you
893 should consider redoing your old experiments with this model.
894 Sorry for the inconvenience.
897 * Introduce the supernovae compilation mode
898 When compiled that way, the whole SimGrid (or almost) is put in a
899 single compilation unit and compiled in one shoot.
900 This is to help gcc which has difficulties to inline stuff from one
902 The speedup seem to be above 15%, althrough more tests are needed on
903 amd64 to confirm that gain.
906 * Port of MSG's mailbox on top of SIMIX network
907 The put/get mechanism was greatly simplified on the way.
910 * New SIMIX network module. Provides:
911 - Mailbox: rendez-vous mecanism to find with who you want to speak
912 - Synchronous send/recv: easier and hopefully faster since the
913 logic is handled in the maestro process directly now
914 - Asynchronous send/recv: you dreamt of it? It's here now
915 Too bad that nobody cared enough to propagate the change to MSG.
916 * Add semaphores as SIMIX synchronization mechanism.
919 * new function SD_daxload(char*) to load a DAX file
920 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
921 * Introduce typed tasks. Specify its kind and cost at creation.
922 At scheduling, just give where it should be placed, and the cost
923 for each involved resource is automatically computed.
924 Existing constructors so far (more to come of course):
925 - SD_task_create_comm_e2e() for end-to-end communication
926 - SD_task_create_comp_seq() for sequential computation
927 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
928 * new function SD_task_dump() for debuging display
929 * new function SD_task_dotty(task,FILE*) writing to file the info
930 about the task in dotty format
931 * SD_task_dependency_exists() can now cope with having one of its
932 arguments NULL. If so, it tests whether the other argument has any
934 * Add getters on list of preceding/following tasks:
935 SD_task_get_parents(task) and SD_task_get_children(task)
936 * Add getters on amount of workstations and list:
937 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
938 * Add getter on task kind: SD_task_get_kind(task)
939 * Update the start_time and finish_time of tasks on completion/failure
940 * Bugfix: Remove task from state swags when destroyed
943 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
946 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
947 dynar with one separate thread per value of the dynar.
948 * Change the prototype of xbt_thread_create(), sorry.
949 Added a boolean parameter indicating whether we want to join this
950 thread (used in SG only for now)
951 * Implement xbt_thread_join and xbt_thread_yield in SG also.
954 * GTNetS wrappers should now be usable again (and betterly tested too)
955 * Fix a major regression from 3.2 where the timeout provided to
956 MSG_task_put_with_timeout() was used as absolute time before which
957 the comm should be done.
958 * Start to fix the <cluster> tag.
959 - Internal links should be good now (beside of the loopback, which
960 use the private link instead)
961 - paths to the external world is still rather broken
962 - the <route:multi> tag is just broken. Actually that's brain-dead.
963 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
964 to make it less stupid
965 ** Check your platform with teshsuite/simdag/platforms/flatifier **
966 * Fix a source-level compatibility glitch from 3.2: after defining
967 MSG_USE_DEPRECATED, you can use the old name
968 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
969 * Allow to compile from the SVN with automake 1.11
970 * Fix some problems when using the "start_time" tag in deployment XMLs.
971 * Fix #8569: XBT/synchro.h has redundant declarations
972 * Fix #8563: MSG return values and exceptions
973 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
974 * Integrate patch #8636: Obey DESTDIR when installing documentation.
975 Thanks to Robson Peixoto.
976 * Fix a vicious bug in dictionaries inducing that some elements were
977 not freed on xbt_dict_free()
979 Portability report of this version:
980 * Main portability targets:
981 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
983 - mac leopard on i386
984 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
985 but nothing critical.
986 * Other platforms: windows, AIX and others were not tested for this release
988 Timing report of this version:
989 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
990 scenario parameters). From 8h to a few seconds in desktop grid settings.
991 * Supernovae brings about 25% speedup on i386.
993 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
995 SimGrid (3.3.3) stable; urgency=low
997 The "Need for Speed" release.
999 The timings done to validate the 3.3.2 were faulty.
1000 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
1002 The problem was a conversion from a manually handled vector to
1003 xbt_dynar_t on the critical path.
1004 xbt_dynar_foreach calls functions, inducing stack management crap.
1006 We inlined these functions and xbt_dynar_foreach is now breath taking.
1007 We also inlined xbt_swag_belong on the way.
1009 Here are some approximate speedup measurements (on master/slaves
1010 simulations lasting between 10s and 20s each):
1011 3.3.1 -> 3.3.2: about same performance
1012 3.3.2 -> 3.3.3: 40% speedup
1013 3.3.1 -> 3.3.3: 40% speedup
1014 3.3.1 with inline patch -> 3.3.3: 30% speedup
1016 Our reading is that the refactoring which occurred in 3.3.2 made us
1017 suffer much more from the xbt_dynar_foreach low performance, but
1018 once we solved this, this refactoring proved to be very performance
1019 effective. From the 40% speedup, somehow, 10% are due to the
1020 inlining and 30% to the refactoring.
1022 That's a pitty that gcc cannot inline functions placed in other files
1023 alone. We have to choose between:
1024 - break the encapsulation (by putting private data structures and
1025 accessors in headers files to help gcc)
1026 - live with low performance
1027 - switch to a decent compiler such as icc (not quite possible).
1029 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
1031 SimGrid (3.3.2) stable; urgency=low
1033 The "Simplicity does not preceed complexity, but follows it" release.
1035 The main contributors of this release were (lexical order):
1036 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
1039 * Extract the routing logic into its own object.
1040 (was dupplicated in network.c and workstation_LV07.c;
1041 Allows to implement other ways of storing that info)
1042 => kill now useless network_card concept
1043 - Use dynar to represent routes (instead of void** + int*)
1044 - kill link_set (use surf_network_model->resource_set instead)
1045 - Add a command-line option to choose the routing schema to use
1046 - Add three new models:
1047 * Floyd (shortest path computed at initialization)
1048 * Dijikstra (shortest path recomputed all the time)
1049 * Cached Dijikstra (shortest path computed on need)
1050 All these models where contributed by Silas De Munck, and are
1051 described in his ICCS09 paper.
1053 * Simplify model declaration
1054 (less redirections, less function to write when defining a model)
1055 - Factorize stuff between models:
1058 surf_model_resource_set(model)
1059 surf_model_resource_by_name(model, name)
1060 - Unify the types of models in s_surf_model_t (using an union)
1061 - Embeed fields of common_public directly into s_surf_model_t
1062 - Rename model methods:
1063 action_free ~> action_unref
1064 action_change_state ~> action_state_set
1065 action_get_state ~> action_state_get
1066 - Change model methods into functions :
1067 (model)->common_public->action_use ~> surf_action_ref
1069 * Implement a generic resource; use it as ancestor to specific ones
1070 (allows to kill duplicated code in models)
1071 Drawback: timer command don't need no name nor properties;
1072 workstation_CLM03 don't need no properties
1073 (but I guess we can live with those few bytes wasted)
1075 * Improve the action object model
1076 - implement a constructor avoiding dupplicated code about field
1077 initialization in generic_action part.
1079 * Kill the SDP model: it has an external dependency, is deprecated
1080 in flavor of modern lmm models, and didn't compile since a while
1083 * Relocation of the context module from XBT to SIMIX.
1084 (the context were decoupled from the simix processes, duplicating a lot of code)
1085 => a lot of code was factorized
1086 - less overhead is introduced during scheduling
1087 - simpler API for the context factory
1088 - the logic for process creation,destruction and manipulation was simplified
1089 * Simplification of the s_smx_process_t data structure.
1090 => accesing the simix level data associated to a process is faster now,
1091 and the code is a lot more readable.
1094 * Implement some more MPI primitives:
1095 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
1096 -implementation: Bcast: flat or 2-ary tree (default),
1097 Barrier: 4-ary tree,
1099 Allreduce: Reduce then Bcast
1100 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
1101 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
1102 Alltoallv: flat tree, like ompi
1104 * Add support for optimized collectives (Bcast is now binomial by default)
1105 * Port smpirun and smpicc to OS X
1108 * Kill SD_link_get_properties: hard to maintain and makes very little sense
1109 Shout out if you used it.
1112 * Display the list of still queued messages in SG mode when existing
1116 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
1117 * Add xbt_graph_node_get_outedges() [Silas De Munck]
1118 * Add xbt_str_from_file(FILE*)
1119 * Add xbt_dict_get_key achieving a linear reverse search
1120 * Remove the context module
1122 Portability report of this version:
1123 * Main portability targets:
1124 - Linux(debian)/x86/context
1125 - Linux(debian)/x86/pthreads
1126 - Linux(debian)/amd64/context
1127 - Linux(debian)/amd64/pthreads
1128 On these, we still have the eratic breakages of gras/pmm and
1129 amok/saturate_sg reported in previous version. We still think
1130 that the tests are the cause of the fault, not the tested code.
1132 - Mac OSX Leopard/x86/context
1133 Still false negative in tesh autotesting.
1134 Smpi still fails, but this time because readlink does not accept -f
1135 Everything seems to work properly beside of that.
1138 - AIX version 5.3 (only tested contexts this time)
1139 Smpi still fails there because mktemp is not installed.
1140 Everything seems to work properly beside of that.
1142 I managed to compile it for the first time, but several breakages.
1143 Won't delay the release for this exotic platform.
1145 * Windows: it's still lagging behind. If you want to help, please
1148 Timing report of this version:
1149 This version seem to be more than 5% faster than 3.3.1 (on linux
1150 64bits with contextes). The gain is less than expected, we are
1151 investigating this for next release.
1153 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
1155 SimGrid (3.3.1) stable; urgency=low
1158 * Implement a --cfg-help to show existing configuration variables
1159 * Build chain do not require doxygen in maintainer mode
1162 * fix a bug on struct sizeof computation, which prevented the
1163 exchange of arrays of structs in some conditions
1164 - added a regression test about this in datadesc_usage
1165 * Allow the exchange of 0-long dynamic vectors.
1166 - for that, use -1 as indicator of dynamic size instead of 0
1167 - This implied to change any size from unsigned long to long,
1168 reducing a bit communication abilities, but I guess that with
1169 64bits being quite common, this is more than enough.
1170 - This also induce a protocol change, thus bumping network protocol
1171 version from 0 to 1 (if we have external users, we have to get
1172 clean on that point too ;)
1173 - added two regression tests about this in datadesc_usage
1174 * Be more verbose when propagating local exceptions
1175 This helps debugging.
1176 * Display the status of simulated processes when receiving SIGINT in
1180 * Allow to control the simulation from a trace file.
1181 New functions MSG_action_register() and MSG_action_trace_run()
1182 The first one allows to associate a function execution to each
1183 kind of action while the second one parses a trace file and
1184 triggers the corresponding actions within the system.
1185 For now, only a toy example is provided in examples/msg/actions
1186 * Add an exemple of process migration in examples/msg/migration
1187 * Fix a bug in task exchange which broke MSG_task_get_sender()
1188 Add a teshsuite regression test for that.
1189 [Bug: if MSG_task_get_sender() is called after sender exit,
1191 * Fix a bug which prevented suspend/resume to work properly
1192 * Display the status of simulated processes when receiving SIGINT
1193 This fixes a regression of v3.3. due to the introduction of SIMIX
1194 * Bug fixing in failure management:
1195 - trace could not start by a failure at time 0
1196 - failure during communications were not working
1199 * Add SIMIX_process_set_name() to change the name of the current
1200 process in the log messages.
1201 * Store smx_hosts in a dict since we only retrieve them by name
1202 * Move the configuration infrastructure to surf
1205 * Move the configuration infrastructure to surf
1208 * Massive internal cleanups:
1209 - Store internal structures on processes instead of hosts (allows
1210 to have more than one process per host, in addition of being more
1212 - Cleanup the initialization/finalization process
1213 - Kill a whole bunch of unneeded synchronization:
1214 processes run in exclusive manner within the simulator
1215 - Move queues from global tables to process data fields
1217 - now accept -platform and -hostfile arguments
1218 - Pass the right rank value to processes according to the hostfile
1219 * Compile the examples by default, and use them as regression tests
1220 * Implement MPI_Wtime()
1221 * Change the reference speed to a command line option
1224 * TCP_gamma can now be specified as command line option using
1225 --cfg=TCP_gamma:10000000.0
1226 * Change the --surf-path cmd line option into --cfg=path:
1229 * Also include strbuff from xbt.h public header
1230 * xbt_ex_display(): do not free the exception after displaying
1231 This allows to do more with the given exception afterward.
1232 Users should call xbt_ex_free() themselves.
1236 Portability report of this version:
1237 * Main portability targets:
1238 - Linux(debian)/x86/context
1239 - Linux(debian)/x86/pthreads
1240 - Linux(debian)/amd64/context
1241 - Linux(debian)/amd64/pthreads
1242 These targets fail about 1/10 of times on gras/pmm, but we believe
1243 that this is because of the test, not because of simgrid.
1244 amok/saturate_sg fails even more rarely, and the test may not be
1247 - Mac OSX Leopard/x86/context
1248 The test suite still spits tons of errors because some obscure
1249 force prevents us from removing the temporary directories
1250 arguing that they still contain some metadata I've never heard of.
1251 Smpi fails because seq is not installed.
1252 Everything seems to work properly beside of that.
1255 - AIX version 5.3 (both contexts and pthread)
1256 Smpi still fails there because mktemp is not installed.
1257 XML inclusions seems rosty on AIX.
1259 * Windows: it's still lagging behind. If you want to help, please
1262 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
1264 SimGrid (3.3) stable; urgency=high
1268 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
1269 [Malek Cherier & Mt]
1271 * Introduce the SIMIX module: factorize code between MSG and GRAS.
1274 Until now, GRAS were using MSG as an interface to SURF. It was
1275 quite difficult because both interface have several differences
1276 (MSG channels vs GRAS sockets were the most notable point).
1278 This also opens the gate to SMPI (which should occur soon) and speed
1279 up simulations by to 40% (even if it were not the main goal).
1281 **************************************
1282 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
1283 **************************************
1284 The point is that events occuring at the exact same timestamp are
1285 not scheduled in the same order with the old and new version. This
1286 may be enough to completely change the execution of simulations in
1287 some cases. Sorry for the inconvenience.
1289 * Cleanup and upgrade the XML format to push further scalability
1290 issues (check http://hal.inria.fr/inria-00256883/ for more info)
1292 * Improve the testing infrastructure with tesh. Now a very large part of
1293 the code is tested not only by being run but also by checking that the
1294 output match an expected output [Mt].
1296 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
1297 is really less memory-demanding, which should allow you to use
1298 larger files in SimGrid [AL].
1300 * Inform valgrind about our contextes, so that it becomes usable
1301 with the default (and more effecient) version of SimGrid
1302 [contributed by Sékou Diakite, many thanks]
1305 * Introduce a listener thread in charge of receiving incoming
1306 messages from the network. It allows to overlap communication and
1307 computation but most notably, it removes some stupid deadlocks due
1308 to the fact that so far, a process could not send and receive at
1309 the same time. This made most non trivial communication schema
1311 * Convert the PIDs from long int to int to match the MSG ones (and
1312 linux ones too) [Mt]
1313 * New function: gras_agent_spawn() to launch a new process on
1314 current host. Only working in simulation for now. [Mt]
1315 * New function: gras_os_hostport() returning a constant form (ie,
1316 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
1319 * Make the backtrace of exceptions more human readable [Mt]
1320 * New module: xbt/str [Mt]
1321 a ton of string utility functions (split, join, printf to a newly
1322 allocated buffer, trim, etc)
1323 * New module: xbt/hash [Mt]
1324 SHA1 hashing algorithm (more to come if needed)
1325 * New module: xbt/synchro [Mt]
1326 synchronization tools (mutex and conditions) working the same way
1327 in simulation and in real life (mainly useful for GRAS, but not
1329 * New module: xbt/queue [Mt]
1330 classical producer/consumer synchronization scheme
1331 * xbt_dynar_new_sync() creates a synchronized dynar. All access
1332 (using the classical functions will get serialized) [Mt]
1333 * Make dictionary internal table dynamic. No need to specify its size
1334 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
1336 * Make sure the log channels are organized as a tree under windows
1337 (because of ANSI C compatibility issue, any channel were child of
1338 root directly) [Mt].
1341 * Cleaned many thing in surf and fixed a few bugs [AL].
1342 * Add a nice command line configuration mechanism to compose models [AL].
1343 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
1344 the previous one (KCCFLN05). It relies on something that looks like
1345 a max-min sharing mechanism but cannot be written as such. A new solver
1346 was thus designed [AL].
1347 * Add a new solver to lmm. Based on Lagrange optimization and
1348 gradient-based descent, it enables to efficiently maximise systems s.a
1350 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
1352 This solver enables to propose two new network models for TCP Reno and
1353 TCP Vegas based on Low's work. These models still need to be fully
1354 tested though [Pedro Velho].
1357 * Bug fix in SD_simulate. Now the time bound given as argument is
1359 * Use the new parallel task model (ptask_L07) as default.
1360 * Use the SURF command line configuration mechanism.
1361 * 0-size tasks (for synchronization) should now work.
1363 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
1365 SimGrid (3.2) stable; urgency=high
1369 We still experience issues on this platform, but we believe that at
1370 least MSG is usable.
1372 GRAS API BREAKAGE (for simplification purpose, sorry):
1373 * the gras_msgtype_by_name is not used anymore. Instead of
1374 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
1375 you can write (and must)
1376 gras_msg_send(toserver, "request", &request);
1377 - If you still want to pass a gras_msgtype_t to the function (to cache
1378 the type and avoid the lookup time), use the gras_msg_send_() variant.
1379 - Impacted functions:
1380 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
1381 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
1382 * The callbacks are now expected to return 0 when everything went well
1383 (just like the main() function)
1385 GRAS new features and improvements:
1386 * New module mecanism where user code can use per process globals [Mt]
1387 This is similar to gras_userdata_*() functions, but for libraries. It
1388 factorize some code developped over and over in the examples and AMOK.
1389 It has still to be documented and used (only amok/peermanagement is
1391 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
1392 loss when they were small enough to fit into the buffer and sent quickly
1393 enough so that they can all get received in one shoot.
1394 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
1395 if not found. Use the *_or_null() variant for the old semantic.
1396 * In gras_msg_handle, do not discard messages without callback.
1397 They are probably messages to be explicitly awaited later (ie, proofs of
1398 mis-synchronization in userland since they are sent before being awaited)
1399 No big deal usually.
1400 * gras_socket_meas_send/recv: semantic changed!
1401 The numerical arguments used to be (1) the total amount of data to send
1402 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
1403 messages. This was need for the fool willing to send more than MAXINT
1404 bytes on quite fat pipes.
1407 * Do really rename the hostmanagement module to peermanagement. [Mt]
1408 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
1409 but this is rather new and this was documented in the module
1410 documentation (poor excuses, I admit)
1411 * Bandwidth measurement semantic changed! This follows the changes to
1412 gras_socket_meas_send/recv explained above.
1415 * A sequential mode has been added to the workstations. When a workstation
1416 is in sequential mode, it can execute only one task, and the other tasks
1417 are waiting in a FIFO. [Christophe Thiery]
1420 * The KCCFLN05 workstation model now handles parallel tasks. It is the
1421 model for SIMDAG. [Christophe Thiery]
1422 * Bug fix in the maxmin solver: Some values were close to 0 instead of
1423 equal to 0, which caused some bad behaviors in
1424 saturated_constraint_set_update. I now use a threshold mechanism like in
1428 * When running manually src/testall, you select specific units [Mt]
1429 testall is the result of our cunit mecanism, and should replace all
1430 the scripty thingy around since bash don't run easily on billware.
1432 * A mallocator system has been added. [Christophe Thiery]
1433 Mallocators allow you to recycle your unused objects instead of freeing them
1434 and allocating new ones.
1436 Documentation update:
1437 * FAQ reworking + New FAQs:
1438 - "Valgrind spits tons of errors!" [Mt]
1439 - "How to repport bugs" [Mt]
1440 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
1441 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
1442 - Communication time measurement within MSG [AL]
1443 - I experience weird communication times when I change the latency [AL]
1444 * GRAS tutorial [Mt]
1446 - an introduction to the framework and to the used communication model
1447 - an initiatic tour introducing the most proheminent features:
1449 . Lesson 0: Installing GRAS
1450 . Lesson 1: Setting up your own project
1451 o Part 2: Message passing
1452 . Lesson 2: Exchanging simple messages
1453 . Lesson 3: Passing arguments to the processes (in SG)
1454 . Lesson 4: Attaching callbacks to messages
1455 . Lesson 5: Using globals in processes
1456 . Lesson 6: Logging informations properly
1457 . Lesson 7: Using internal timers
1458 . Lesson 8: Handling errors through exceptions
1459 . Lesson 9: Exchanging simple data
1460 . Lesson 10: Remote Procedure Calling (RPC)
1461 . Lesson 11: Explicitely waiting for messages
1462 . Recapping of message passing features in GRAS
1463 - A HOWTO section containing:
1464 o HOWTO design a GRAS application
1465 More are due, of course. They will come latter. In the meanwhile, you can
1466 check the examples which are still here.
1468 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
1470 SimGrid (3.1) stable; urgency=high
1474 There was a stack corruption somewhere, visible only when optimizing
1475 with these versions. [Vince]
1478 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
1479 module that enabled to play with Directed Acyclic Graphs. It is built
1480 directly on top of SURF and provides an API rather close to the old
1481 SG. Some old codes using SG are currently under rewrite to check that
1482 all needful functions are provided. [Christophe Thiery]
1485 * Complete rewrite of the KCCFLN05 workstation model. It is now an
1486 extension of the classical CLM03 model that gracefully handles
1487 failures. This is now the default model for MSG and GRAS. It doesn't
1488 handle parallel tasks yet though. [AL]
1489 * Bug fix: Weights were not correctly set in the network part.
1490 WARNING: This may have resulted in incorrect results with simulations
1491 where there are more than one flow on a given link. [AL]
1494 * After a (long ?) discussion on simgrid-devel, we have decided that the
1495 convention we had on units was stupid. That is why it has been decided
1496 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
1497 WARNING : This means that all previous platform files will not work as
1498 such with this version! A warning is issued to ask users to update
1500 A conversion script can be found in the contrib module of the CVS, under
1501 the name contrib/platform_generation/surfxml_update.pl [MQ]
1504 * Bug fix: Processes were started in reverse order, wrt deployment file.
1505 WARNING: if your code relies on this bug, please fix it. [AL]
1506 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
1507 being executed on two different locations. [AL]
1508 * Bug fix: Failures are now better supported thanks to Derrick's tests
1509 (there was many failure situations I hadn't thought of and that weren't
1510 correctly handled). [AL]
1511 * New function: MSG_host_is_avail indicates you whether a given m_host_t
1515 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
1516 Exception occurring on server-side are propagated back to client (!).
1518 API CHANGE: the callback changed their prototype. Change:
1519 int my_handler(gras_socket_t expeditor, void *payload_data) {
1521 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
1522 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
1524 * New! function: gras_msg_handleall to deal with all messages arriving
1525 within a given period.
1526 * New! function: gras_socket_server_range to get a server socket in a
1527 range of port numbers (ease to avoid port number conflicts) [MQ]
1528 * New! gras processes display their backtrace when they get a SIGUSR1
1529 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
1530 Sweet to debug RL processes [MQ]
1534 - Do not force experiment sizes to be expressed in kb, or it becomes
1535 impossible to measure the latency this way (needs one byte-long tests)
1536 WARNING: this changes the amok_bw_* function semantic. [MQ]
1537 - Implements the link saturation stuff. [MQ]
1538 * Peer management module:
1539 New! module factorizing code that we wrote over and over [MQ].
1542 * New module: cunit (my jUnit implementation in ansi C) [MQ]
1543 - Test units are placed directly into the library code, they get extracted
1544 automatically and placed into the src/testall binary.
1545 - Convert most of the XBT tests to this system.
1546 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
1547 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
1548 live in the same C code. This required to change a little bit the API
1549 of surfxml parsing but shouldn't be an issue for end-users. [AL]
1550 * New module: sparse graph structure with basic algorithms (this is work
1551 in progress and the API is not considered to be frozen yet). [AL]
1552 * Display more information on backtraces: source line & function names are
1553 now displayed just like valgrind does (rely on addr2line tool) [MQ]
1554 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
1555 * Reworked a little bit some #include statements to load only required
1556 headers. Some user code that relied on SimGrid to include stdlib or
1557 stdio may need to include it by themselves. [AL]
1558 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
1560 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
1561 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
1562 but I guess that almost nobody used those parts. [MQ]
1564 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
1566 SimGrid (3.0.1) stable; urgency=low
1569 * Unfortunately, I had missed 5 misnamed functions:
1570 xbt_fifo_item_t xbt_fifo_newitem(void);
1571 void xbt_fifo_freeitem(xbt_fifo_item_t);
1572 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
1573 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
1574 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
1575 They're now deprecated. Please use their new versions:
1576 xbt_fifo_item_t xbt_fifo_new_item(void);
1577 void xbt_fifo_free_item(xbt_fifo_item_t);
1578 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
1579 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
1580 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
1582 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
1583 * Documentation: xbt_log module unmercifully reworked [MQ]
1584 * Bugfix: there was a problem with the ending of contexts with
1585 the pthread backend. It caused some weird deadlock or behavior
1586 depending on the pthread implementation. [AL]
1587 * Bugfix: get the exceptions raised in the simulator repport where
1588 and why they come from when they are not catched in time [AL, MQ]
1591 * Bugfix: Do repport the error when two non-connected hosts try to
1592 exchange data (Thanks to Flavien for stumbling into this one) [AL]
1595 * Add additionnal checkings on communications. Assert that two
1596 communicating hosts are connected by a set of links... [AL]
1599 * Add additionnal checkings on channel values in communication [AL]
1600 * New: MSG_task_get_source to see on which host a task was generated [HC]
1601 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
1602 the number of tasks waiting to be received on channel and sent
1604 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
1605 waits for the first task coming from a given host.. [AL]
1607 GRAS new functionnalities: [MQ]
1608 * Enhance the parsing macro to allow the size of multidimentional objects
1609 to be given thru annotations.
1610 * New example (and documentation): Matrix Multiplication a la RPC
1611 (as when I was young!) and fix a bunch of bugs found on the way.
1613 GRAS performance improvements: [MQ]
1615 * Reduce the amount of cbps creation/destruction by making it static to
1616 datadesc_send/recv() and using a (newly created) cbps_reset (based on
1619 * Change libdata to a set so that we can search for stuff by ID (and thus
1620 reduce the insane amount of dict lookups)
1623 * Actually implement gras_datadesc_copy() so that we don't have to mimick
1624 RL communication on top of SG since it's so uneffective.
1625 It may also be used for inter-thread communication in RL, one day.
1626 * Use gras_datadesc_copy() to exchange messages on top of SG
1628 - improve message exchange performance on top of SG
1629 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
1630 * Don't exchange on the network the size of the used part of buffer,
1631 instead, specify the possible buffer size to read().
1633 - reduces the amount of read/write calls (one pair per exchange)
1634 - reduces the amount of exchanged data (the size)
1635 - allows to retrieve all arrived data on receiver side, if we don't need
1636 it right now (subsequent read will peek the buffer)
1637 - allows the receiver to proceed with the begining of the stream before
1638 everything is arrived
1639 - make it possible to build an iov transport (using readv/writev)
1641 - take care of the data with non-stable storage (like stacked data),
1643 * If possible, TCP send uses vector I/O (when writev() is here)
1644 - Don't use it for receive since we send data sizes and data on the
1645 same stream, so we wouldn't be able to chain large amount of chunks
1646 before having to flush the stuff to read the size.
1647 * Rework the transport plugin mecanism to simplify it and reduce the
1648 amount of pointer dereferencement when searching for the right function
1651 * I guess that now, we do almost as few system calls as possible while
1652 doing as few data copy as possible.
1654 To improve it further, we could try to send all the sizes first and then
1655 all the data (to use iov on receiving size), but it's only a partial
1656 solution: when you have 2 dimensional data, the sizes of the second
1657 dimension is data of the first dimension, so you need 3 streams.
1659 I'm not sure the potential performance gains justify the coding burden.
1661 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
1663 SimGrid (3.00) stable; urgency=high
1666 * New! Give the possibility to hijack the surf parser and thus bypass
1667 MSG_create_environment and MSG_launch_application. Have a look at
1668 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
1670 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
1672 SimGrid (2.96) unstable; urgency=low
1677 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
1678 This deprecates the xbt_error_t mecanisms.
1679 It modifies (simplifies) all XBT and GRAS API.
1680 MSG API keeps unchanged (exceptions raised by XBT are catched from
1681 within MSG and masked with existing error handling facilities)
1684 * New! Add a FATPIPE model. [AL]
1685 * New! Add a parallel task model. [AL]
1686 * New! Add automatically a loopback interface (in the default
1687 network model) if none was precised.
1690 * Bugfix: MSG_process_resume now works with the current running process.
1692 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
1693 * Modification of MSG_task_get_compute_duration. Once a task has been
1694 processed, the value returned by this function is now equal to 0. [AL]
1695 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
1696 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
1697 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
1698 of a m_task. For now, MSG_task_cancel only works with computation
1700 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
1701 of the processor (in Mflop/s) regardless of the current load on the
1703 * API Change: use proper naming convention for MSG_getClock and
1704 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
1706 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
1707 This function changes the priority of a computation task. This priority
1708 doesn't affect the transfer rate. A priority of 2 will make a task
1709 receive two times more cpu power than the other ones. This function
1710 has been added to suit the needs of Nguyen The Loc and hasn't been that
1711 much tested yet. So if it fails, please report it and send me your code.
1713 * API Change: removed all functions and types that were marked "deprecated"
1714 since many months. Renamed MSG_global_init_args to MSG_global_init.
1716 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
1718 SimGrid (2.95) unstable; urgency=low
1721 * Steal some nice code to GNU pth to fix context detection and usage [AL]
1722 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
1723 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
1726 * Bugfix: Allow absolute paths for platform description files [MQ]
1727 * Bugfix: do free the variables after use. Leads to drastic performance
1729 * Implement max_duration (ie, timeouts) on resources [AL]
1732 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
1734 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
1735 the needed support (timeouts) [AL]
1738 * Implement measurement sockets. You can now get the bandwidth between two
1739 hosts thanks to AMOK (see below). [MQ]
1740 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
1741 dynar over the network (yeah) [MQ]
1742 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
1743 * simple/static token-ring example. [Alexandre Colucci and MQ]
1744 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
1745 in place before [MQ]
1748 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
1749 type parsing. "short" and "long" modifiers were also ignored; other
1750 modifier (such as reference level) are still ignored. [MQ]
1751 * Embeed the buffer size within the buffer itself on SG. [MQ]
1752 That way, send() are atomic and cannot get intermixed anymore (at least
1753 the ones which are less than 100k; bigger messages still have the issue)
1754 * Array size pushed by the field, not by the field type (or each
1755 and every long int will push stuff to the cbps) [MQ]
1756 * use select() to sleep since it allows to portably sleep less than one
1759 GRAS (minor cleanups)
1760 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
1763 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
1764 * type category 'ignored' killed as it was never used and were difficult
1766 * whether a type can cycle or not is now a flag, leaving room for more
1767 flags (as "ignored", if we feel the need one day ;)
1768 * Rename raw sockets to measurement sockets since "raw" has another
1769 meaning in networking community.
1772 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
1773 and offers features not belonging to GRAS but that most applications
1774 need. One day, it may be a set of plugins loadable at runtime.
1775 * New module: bandwidth
1776 bandwidth measurement between arbitrary nodes running this module. [MQ]
1778 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
1780 SimGrid (2.94) unstable; urgency=low
1782 The first beta release of SimGrid 3 !
1786 * Update the main page and the FAQ. Adding references to gforge.
1789 * Add a gras_os_getpid function.
1792 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
1793 * Extend the logs so that they also print PID, hostname, date, ... if
1795 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
1796 and kill the old version which were in testsuite/
1797 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
1801 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
1802 for users. Instead, each programming environment (GRAS, MSG,...) use it
1803 when needed to provide such a feature to users.
1804 Don't shortcut the mecanism or you will also shortcut the virtualization
1805 you need on the simulator.
1809 * Cleanups in configury with regard to compile optimization/warning flags.
1810 Also add -fno-loop-optimize to any powerpc since it's the optimization
1811 killing gcc (< 3.4.0).
1812 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
1813 needed by MSG examples complications
1814 * Borrow configury beautifications from PHP
1817 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
1818 warning (thanks loris for stumbling into this one).
1819 * Bugfix: stop loading private headers (gras_config.h) from the public
1823 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
1824 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
1825 RL would imply a DNS resolver, which is *hard* to do in a portable way
1826 (and therefore delayed).
1827 * Implement a real timer mecanism and use it in timing macros. This allows
1828 to avoid rounding errors and get a 0.000005 sec precision in timing
1829 macros. While I was at it, various cleanups:
1830 - allow to declare more than one timed section per file (fix a stupid bug)
1831 - move some private declaration to the right place
1832 - merge conditional execution and timing macros into emulation module
1833 - document the module
1834 - make sure the module cleanups its mess on gras_exit
1835 * Documentation improvements:
1836 - (new) how to compile applications using GRAS
1837 - (new) emulation support (timing macros)
1839 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
1841 SimGrid (2.93) unstable; urgency=low
1843 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
1846 - Use Paje properly where used. Still to be sanitized properly.
1847 - Portability fix: Add an implementation of the contexts using pthread
1851 - Add xbt_procname(): returns the name of the current process.
1852 Use it to show the current process's name in all logging.
1854 - fix detection of older flex version and the reaction, since we do
1855 depend on modern ones (we use lex_destroy)
1856 - Better separation of SG and RL in the libs: remove all simulation code
1857 from libgras. As a result, this lib is now only 200k when stripped.
1858 Some of the xbt modules may also be duplicated (two sets and such) and
1859 should be cleaned/killed before SG3.
1860 - Insist on using xlC on AIX because of weird problems involving gcc there.
1861 - Cleanup the make remote stuff. This is now done by scripts
1862 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
1863 mainly for our private use, but we're working on changing them to user
1866 - Bugfix: flush the socket on close only if there is some *output*.
1867 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
1869 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
1872 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
1874 SimGrid (2.92) unstable; urgency=low
1876 Alpha 3 on the path to SimGrid 3
1880 - New! First try of benchmarking macros.
1881 - New! First try so that gras_stub_generator generate deployment and
1882 remote compilation helpers.
1884 - Bugfix: Initialization fix in msg_test.
1888 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
1890 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
1892 - API Change: gras_os_sleep to take the amount of seconds as a double.
1893 Accepting an int was error prone since it was the only location where
1894 seconds were coded as such. It leaded to damn rounding errors.
1895 - Bugfix: Hard to belive that timers ever worked before this.
1897 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
1899 SimGrid (2.91) unstable; urgency=low
1901 Alpha 2 on the path to SimGrid 3
1905 - Bug fix in the lmm_solver.
1907 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
1908 through the function MSG_paje_output.
1909 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
1910 - It is possible to bound the rate of a communication in MSG with
1911 MSG_task_put_bounded() (was already in the previous version but I had forgotten
1912 to write it in the changelog).
1913 - Bug fix to let GRAS run on top of MSG until we move it directly on top
1918 - Various cleanups to the autotools stuff
1919 - Begin to move Gras examples to examples/gras/
1920 - Let make distcheck work again (yeah!)
1922 - documentation overhauled using doxygen.
1923 gtk-doc-tools is dead in SimGrid now.
1924 - Automatically extract all existing logging categories, and add the list
1925 to the documentation (long standing one, to say the less)
1927 - Cleanup the known architecture table. Reorder the entries to group what
1928 should be, and use a more consistent naming scheme.
1929 (some of the test dataset are still to be regenerated)
1930 - New! Allow library to register globals on each process just as userdata
1932 This is implemented using a xbt_dict and not a xbt_set, so we loose the
1933 lookup time (for now).
1934 Use it in msg and trp.
1935 This cleans a lot the internals and helps enforcing privacy of the
1936 headers between the gras components.
1937 - New! Add a timer mechanism, not unlike cron(8) and at(1).
1938 - Bugfix: gras_os_time was delirious in RL.
1939 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
1941 - Reenable GRAS now that it works.
1943 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
1945 SimGrid (2.90) unstable; urgency=low
1947 Alpha 1 on the path to SimGrid 3
1949 * It is a long time since the last release of SimGrid. I'm sorry about
1950 that but as I had told you, I was rewriting a lot of things. I apologize
1951 to those who had been reporting bugs to me and that I had not answered.
1952 If your bug is still in the new version, please tell me. Here is a
1953 summary of the main changes.
1955 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
1956 lead by Martin Quinson. As a consequence SimGrid gains a lot in
1957 portability, speed, and a lot more but you'll figure it out later.
1958 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
1959 I wanted to release the new MSG as soon as possible and I have
1960 broken GRAS, which is the reason why, for now, only MSG is fully
1961 functional. A laconic description of these projects is available
1962 in the documentation.
1964 * REVOLUTION 2: I have removed SG and I am now using a new simulation
1965 kernel optimized for our needs (called SURF but only the developers
1966 should use it). Hence, MSG is now roughly 30 times faster and I think
1967 that by rewriting a little bit MSG, I could event speed it up a little
1968 bit more. Beside the gain in speed, it is also much easier to encode a
1969 new platform model with SURF than it was with SG. More to come...
1971 * REVOLUTION 3: I have tried to change a little as possible the API of
1972 MSG but a few things really had to disappear. The main differences
1973 with the previous version are :
1974 1) no more m_links_t and the corresponding functions. Platforms are
1975 directly read from a XML description and cannot be hard-coded
1976 anymore. The same format is used for application deployment
1977 description. The new format is described in the documentation.
1978 Have a look in tools/platform_generation. There is a tiny script
1979 that converts from the old platform format to the new one. Concerning
1980 the application deployment format, parsing the old one is tricky.
1981 I think most of you should however be able to convert your files. If
1982 it is really an issue, I can write a C code that does the conversion.
1984 2) the toolbox tbx does not exist anymore. We now have a library
1985 with much more data-structures but without the hash-tables (we have
1986 dictionaries that are much faster).
1988 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
1990 *****************************************************************************
1991 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
1992 * don't feel like converting the oldies. (Mt) *
1993 *****************************************************************************
1996 Version 2.90: "the long awaited one"
1997 - Finished rewriting and debugging MSG. Rewrote the documentation.
1998 - disable GRAS for now since it needs to be ported to the newest SG
2001 - Finish the port to windows (using mingw32 for cross-compile)
2004 - Main loop and datastructures of SURF. A cpu resource object is
2005 functional. Surf can thus be used to create cpu's with variable
2006 performance on which you can execute some actions.
2008 2004-11-15 Martin Quinson
2009 - Port to ARM. Simply added the alignment and size descriptions. Should
2010 work, but the ARM machines are so slow that I didn't had the opportunity
2011 to 'make check' over there yet.
2013 2004-11-15 Arnaud Legrand
2014 - Trace manager now written. It uses a heap structure and is therefore
2015 expected to be efficient. It may however be speeded up (particularly
2016 when many events occur at the same date) by using red and black
2017 trees. One day maybe...
2018 - Max-min linear system solver written. It uses a sparse matrix
2019 structure taking advantage of its expected use. Most operations are
2020 O(1) and free/calloc are called as few as possible. The computation of
2021 the minimum could however be improved by using a red and black tree
2024 2004-11-03 Arnaud Legrand
2025 - Rename every gras_* function that was in xbt/ to its xbt_
2027 - Add a heap and a doubly-linked list to xbt
2028 - Added a dichotomy to the dictionaries. make check works as well before
2029 so I assume that the patch is correct. I do not know however if things
2030 run effectively faster than before now. :)
2032 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
2033 SimGrid, and the version number is bumped to 2.x
2035 2004-10-29 Martin Quinson
2036 - Introduction of the remote errors.
2037 They are the result of a RMI/RPC on the remote machine.
2038 ErrCodes being scalar values, you can't get the host on which those
2039 errors did happen. Extending the error mechanism as in Gnome is possible.
2040 No idea yet whether it is a good idea.
2042 2004-10-28 Martin Quinson
2043 - Interface revolution: the Starred Structure Eradication.
2044 I used to do typedef struct {} toto_t; and then handle *toto_t.
2045 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
2046 - ???_t is a valid type (builded with typedef)
2047 - s_toto_t is a structure (access to fields with .)
2048 - s_toto is a structure needing 'struct' keyword to be used
2049 - e_toto_t is an enum
2050 - toto_t is an 'object' (struct*)
2052 typedef struct s_toto {} s_toto_t, *toto_t;
2053 typedef enum {} e_toto_t;
2054 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
2055 s_toto_t) is private.
2057 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
2058 so that it can set the variable to NULL. It was so for dicts and sets,
2059 it changed for dynars.
2061 - Fix a bunch of memleaks in dict_remove
2062 - Fix a bug in sg/server_socket opening: it failed all the time.
2064 2004-10-07 Martin Quinson
2065 - Speed up dynar lookup operation a bit.
2067 gras_dynar_get is dead.
2069 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
2070 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
2071 (which gives you the address of the stored data).
2073 gras_dynar_get_as is an helpful macro which allows you to retrieve a
2074 copy of the data using an affectation to do the job and not a memcpy.
2076 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
2077 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
2079 It does not really speedup the dynar test because they are
2080 setting elements all the time (and look them seldom). But the dict does
2081 far more lookup than setting.
2083 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
2085 2004-10-05 Martin Quinson
2086 - Allow to (en/dis)able the cycle detection at run time.
2088 Whether we should check for cycle or not is now a property of each
2089 datatype. When you think there may be some cycle, use datadesc_cycle_set.
2090 datadesc_cycle_unset allow to remove this property when previously set.
2092 Note that the cycle detection is off by default since it impacts the
2093 performance. Watch the data you feed GRAS with ;)
2095 This property is hereditary. Any element embedded in a structure having it
2096 set have it set for the time of this data exchange.
2098 You should set it both on sender and receiver side. If you don't set it on
2099 sender side, it will enter an endless loop. If you forget on receiver
2100 side, the cycles won't be recreated after communication.
2102 - Header reorganization.
2103 Kill gras_private.h, each submodule must load the headers it needs.
2105 2004-10-04 Martin Quinson
2106 - Interface revolution: do not try to survive to malloc failure.
2108 Now, gras_malloc and friends call gras_abort() on failure.
2109 As a conclusion, malloc_error is not a valid error anymore, and all
2110 functions for which it was the only gras_error_t return value are
2111 changed. They now return void, or there result directly.
2112 This simplify the API a lot.
2114 2004-09-29 Martin Quinson
2115 - Re-enable raw sockets.
2116 Created by gras_socket_{client,server}_ext;
2117 Used with gras_raw_{send,recv}
2120 It should allow to kill the last bits of gras first version soon.
2122 This is not completely satisfactory yet (duplicate code with
2123 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
2126 - Simplify transport plugin (internal) interface by not passing any
2127 argument to _server and _client, but embedding them in the socket
2130 2004-09-28 Martin Quinson
2131 - Finish the port to AIX.
2132 autoconf was my problem (segfault within the malloc replacement
2133 function. No idea why)
2135 2004-09-16 Martin Quinson
2136 - Fix some size_t madness on 64bit architectures.
2138 2004-09-08 Martin Quinson
2139 - Reduce the number of system headers loaded, overload some more system
2140 calls (such as malloc to cast the result of the system one, and work
2142 - Fix and reintroduce the config support
2144 2004-09-07 Martin Quinson
2145 - Source code reorganization to allow Arnaud to surf all over there.
2146 - Allow to document the logging categories.
2147 - Remove all uppercase from logging categories and useless cleanup in names.
2149 2004-08-18 Martin Quinson
2150 Version 0.6.2 (protocol not changed; API changed)
2151 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
2152 gras_error_t), and NULL when not found. Functions expecting a msgtype
2153 as argument (msg_wait; msg_send) deal with NULL argument by providing a
2154 hopefully usefull message.
2155 - Portability to prehistoric sparcs again
2157 2004-08-17 Martin Quinson
2158 Version 0.6.1 (protocol not changed; ABI not changed)
2159 - prealloc some buffers to speed things up
2161 2004-08-11 Martin Quinson
2162 Version 0.6 (protocol not changed; ABI expended)
2163 - The parsing macro can deal with the references, provided that you add
2164 the relevant annotations (using GRAS_ANNOTE(size,field_name))
2166 2004-08-09 Martin Quinson
2167 Version 0.5 (protocol not changed; ABI changed)
2168 - Allow to off turn the cycle detection code in data exchange at
2169 compilation time. It should be at run time, but I'm short of time (and
2170 the config stuff is still broken). That way, we keep dict out of the
2171 critical path, which is good because the performance is poor:
2172 - search not dichotomial yet
2173 - dynar give no way to access their content and memcpy everytime
2174 - In composed data description (struct, ref and so on), stop foolness of
2175 keeping the subtype's ID, but store the type itself. This keeps sets out
2176 of the critical path, which is good since they rely on dynar and
2177 dictionnaries. The only loose of that is that we cannot detect the
2178 redeclaration of a structure/union with another content (but I'm not sure
2179 the code detected well this error before anyway). We still can detect
2180 the redefinition discrepancy for the other types.
2181 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
2182 it breaks the code because of type-punning used all over the place).
2183 This breaks on all non-gcc architectures (for now).
2185 All those changes (plus the buffer of last time) allow me to gain 2 order
2186 of magnitude on cruel tests consisting of 800000 array of integers on two
2187 level of a hierarchical structure (200 secondes -> 4 secondes)
2190 - the selector of reference must now return the type it points to, not
2191 the ID of this type.
2193 2004-08-06 Martin Quinson
2194 Version 0.4 (protocol changed; ABI not changed)
2195 - Allow to pass --gras-log argument to processes in simulation mode. Really.
2196 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
2197 - Implement a buffer transport, and use it by default (it relies on tcp in
2198 real life and on sg in simulation).
2199 That's a bit hackish since I had a new field to the structure to store
2200 its data without interfering with the subtype ones. Inheritance
2201 is tricky in C. And that's a kind of reverse inheritance with one class
2202 derivating two classes. Or maybe a game with java interfaces. Anyway,
2203 that's damn hard in C (at least).
2204 Moreover, I got tired while trying to ensure plugin separation and
2205 genericity in SG mode. MSG wants me to do weird things, so let's go for
2206 cruel hacks (temporarily of course ;).
2207 See comment in transport_private.h:71
2208 - do not include all the _interface headers in private but in the files
2209 which really need them (to cut the compilation time when they are
2212 2004-07-26 Martin Quinson
2213 Version 0.3 (protocol not changed; ABI changed)
2214 - Major overhault of the datadesc interface to simplify it:
2215 - shorted the function names:
2216 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
2217 - add a trivial way to push/pop integers into the cbps without malloc.
2218 This allows to make really generic sub_type description, which simply
2219 pop their size of the stack.
2220 - add a function gras_datadesc_ref_pop_arr() which does what users want
2221 most of the time: Declare a dynamic array (which pops its size of the
2222 stack) and declare a reference to it. Poor name, but anyway.
2223 - kill the post-send callback, add a post-receive one
2225 2004-07-23 Martin Quinson
2226 Version 0.2 (protocol changed; ABI changed)
2227 - add some testing for cpbs in the test cases, and fix some more bugs.
2228 This invalidate again the little64 data file, since I cannot regenerate
2230 - remove an awfull optimization in the logging stuff, allowing me to:
2231 - understand it again
2232 - learn gcc how to check that the argument match the provided format
2233 - fix all errors revealed by gcc after that
2234 - internal keys of dict are not \0 terminated. Deal with it properly in
2235 loggings instead of segfaulting when the user want to see the logs :-/
2237 2004-07-22 Martin Quinson
2238 - Fix some stupid bug preventing cbps (callback postit) from working
2240 2004-07-21 Martin Quinson
2241 - Some documentation cleanups
2242 - remove the useless last argument of msgtype_declare
2243 - rename the Virtu functions to fit into the 'os' namespace
2244 - move headers src/include -> src/include/gras/ and stop fooling with
2245 gras -> . symbolic link
2246 - make distcheck is now successful
2248 2004-07-19 Martin Quinson
2250 - Build shared library also
2251 - Install html doc to the right location
2252 - stop removing maintainer files in make clean
2253 - build tests only on make check
2255 2004-07-13 Martin Quinson
2257 - No major issue in previous version => change versionning schema
2258 - Re-enable little64 convertion test now that Abdou kindly regenerated the
2259 corresponding dataset.
2261 2004-07-11 Martin Quinson
2263 - Get it working with any kind of structure (we can compute the padding
2264 bytes remotely for all the architectures I have access to)
2265 - Implement the structure parsing macro (still not quite robust/complete)
2266 - Improvement to the remote testing toysuite
2268 2004-07-10 Martin Quinson
2269 [autoconf mechanism]
2270 - get ride of a bunch of deprecated macros
2271 - actually run the test for two-compliment, not only compile it :-/
2272 - test whether the structures get packed (and bail out if yes. Damn.
2273 Alignment is a serious matter)
2274 - test whether the structures get compacted (but respecting the alignment
2275 constraints of each types)
2276 - test whether the array fields of structures can straddle alignment boundaries
2278 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
2279 (took me 2 hours to find that bug, looking at the wrong place)
2280 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
2281 before sending/receiving and are used to compute the offsets of fields
2282 - Given that padding size depend even on compiler options, keep track of
2283 alignment and aligned_size only for the current architecture. Not a big
2284 deal since we send structure fields one after the other (seems
2286 - Add the datastructure used for IEEE paper by the PBIO guys to the test
2287 program, let it work on linux/gcc/little32. portability todo.
2289 2004-07-08 Martin Quinson
2290 - import and improve remote compilation support from FAST
2291 - make sure make check works on half a dozen of machines out there
2293 2004-07-07 Martin Quinson
2294 Let's say it's version 0.0.3 ;)
2295 - Implement conversions (yuhu!)
2296 - Let it work on solaris (beside conversion, of course)
2297 - Stupid me, using rand() to generate the conversion datatests in not wise.
2299 2004-07-06 Martin Quinson
2300 - Let make dist work, since I'm gonna need it to compile on remote hosts
2301 - Let Tests/datadesc_usage write the architecture on which the file was
2302 generated as first byte.
2303 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
2304 architecture descriptions.
2305 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
2306 on those architectures.
2307 - Optimization: send/recv array of scalar in one shoot
2309 2004-07-05 Martin Quinson
2310 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
2312 - Plug a whole bunch of memleaks
2313 - each process now have to call gras_{init,exit}. One day, their log
2314 settings will be separated
2315 - Continue the code factorisation between SG, RL and common in Transport.
2317 2004-07-04 Martin Quinson
2319 - Redistribution between SG and RL.
2320 We wanna have to accept in SG, so move accepted related parts of RL in
2321 the common part. (more precisely, the dynar of all known sockets is no
2322 more a static in transport.c, but part of the process_data)
2324 [gras_stub_generator]
2325 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
2327 2004-07-03 Martin Quinson
2328 - Create a new log channel tbx containing dict, set, log, dynar (to shut
2329 them all up in one shot)
2331 - Fix the ugly case of reference to dynamic array.
2332 - New (semi-public) function gras_datadesc_size to allow the messaging
2333 layer to malloc the needed space for the buffer.
2335 - gras_socket_close now expect the socket to close (and not its address to
2336 put NULL in it after it). This is because the socket passed to handlers
2337 is one of their argument (=> not writable).
2339 - propagate the interface cleanup from last week in datadesc, ie remove a
2340 superfluous level of indirection. User pass adress of variable
2341 containing data (both when sending and receiving), and not of a variable
2342 being a pointer to the data. Let's say that I like it better ;)
2343 The price for that is constructs like "int msg=*(int*)payload" in
2344 handlers, but it's a fine price, IMHO.
2346 - Let it work in RL (yuhu)
2348 2004-06-21 Martin Quinson
2350 - porting SG plugin and SG select to new standards (works almost).
2351 - plug memleaks and fix bugs around.
2354 - cleanup the prototype of data recv and force users to specify when they
2355 want to handle references to objects. Test case working even for cycles.
2356 - plug memleaks. Valgrind is perfectly ok with this.
2358 2004-06-12 Martin Quinson
2360 - cleanup the separation between plugin and main code in plugin creation
2362 2004-06-11 Martin Quinson
2364 - Reput hook for raw sockets, needed for BW experiments
2365 - kill a few lines of dead code
2366 [Data description] Interface cleanup
2367 - gras_datadesc_by_name returns the searched type or NULL.
2368 That way, no variable is needed to use a type desc once, which makes
2370 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
2371 two parameters were strings (field name, type name), leading to
2373 [Dicos] Interface cleanup
2374 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
2375 This is consistant with the dynar API.
2377 2004-04-21 Martin Quinson
2379 - Porting to new standards.
2381 - interface cleanup.
2382 There is no bag anymore, no need to take extra provision to mask the
2383 pointers behind "ID".
2384 Better splitup of functions between files create/exchange/convert.
2385 This is still a bit artificial since convert and receive are so
2386 interleaved, but anyway.
2388 - add a queued message list to procdata (the ones not matching criteria
2390 - factorize some more code between SG and RL wrt procdata
2392 - use gras_exit in example to track memleaks
2393 - get rid of gs_example now that GS is properly integrated into gras
2394 - update run_test to integrate the lastest tests (datadesc)
2396 - rename WARNINGn macros to WARNn since it prooved error-prone
2398 2004-04-19 Martin Quinson
2400 - register init/exit functions within gras module mechanism
2401 - send/receive function.
2402 Convertion is not implemented, but short-cutted if not needed.
2403 struct/array elements are sent one by one (instead of block-wise), but
2404 nobody really cares (yet). Get a prototype before optimizing.
2405 - tests (using a file socket) for DD send/receive on:
2406 - base types: int, float
2407 - array: fixed size, string (ie ref to dynamic string)
2408 - structure: homogeneous, heterogeneous
2409 - chained list, graph with cycle
2410 Believe it or not, valgrind is not too unhappy with the results. The
2411 cycle happily segfaults, but the others are ok. And I'm sick of pointers
2415 - Bugfix when using a filename explicitely (instead of '-')
2417 2004-04-09 Martin Quinson
2419 - factorize more code between RL and SG in socket creation
2420 - Complete the implementation and tests of:
2422 o file (only in RL, and mainly for debugging)
2424 I lost 3 days to design a portable address resolver, and then decided
2425 that the prototype mainly have to run on my box.
2426 Addressing portability too early may be like optimizing too early :-/
2428 - use gras_init in the Tests instead of the crappy parse_log_opt
2429 (the latter function is removed)
2430 [Conditional execution]
2431 - New functions: gras_if_RL/gras_if_SG (basic support for this)
2432 [Code reorganisation]
2433 - Get rid of libgrasutils.a since it makes more trouble than it solves.
2434 Build examples against the RL library, since there is no way to disable
2435 its creation for now.
2437 For information, the beginning of coding on GRAS was back in june
2438 2003. I guess that every line has been rewritten at least twice since