1 SimGrid (3.7) unstable; urgency=low
4 * Bug fix: correction of the dot file parsing with the libcgraph
7 * Fix many issues that prevented SimGrid from working
8 correctly on windows (both for 32 and 64 bit architectures):
9 - port win32_ucontext.c to 64 bit arch
10 - now that we rely on gcc, clean xbt/log.h so that it does not
11 add useless bugs that had been introduced to handle the
13 * Create an installer for windows with nsis(amd64 and win32)
14 - Add an hello world project to illustrate simgrid project creation.
15 - Embed libpcre into the Simgrid installer to avoid
16 its compilation burden
18 -- `LC_ALL=C date` Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
22 SimGrid (3.6.1) unstable; urgency=low
24 The "Oops, we broke Macs too" release
27 * Fixed contextes detection so that raw ones are used when possible
28 * On Mac, do not use Posix Ucontextes with gcc v4.[1-5] since this
29 leads to a strange error, with user code segfaulting sometimes when
30 the generated code is not perfectly aligned (which is not
31 controlable from the user side, depends on the amount of code)
34 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
36 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
38 SimGrid (3.6) stable; urgency=medium
40 The Summer Release, also known as the "OMG! They Killed Kenny!" version
43 * Bindings now constitute their own package, separated from the main one.
44 Rationale: reduce our maintainance nightmare by reducing the module coupling
45 They will soon be released on their own on gforge.
47 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
48 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
50 GRAS: It is not considered as stable anymore, but experimental. Sorry.
51 * It's not quite deprecated for now because we have no replacement,
52 but it may soon become the case.
55 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
56 * Fortran: New user-level cache variable to store the rank of the running
57 process. This improves performance by an order of magnitude.
58 * C: New coccinelle script to automatically locate and modifiy global and
59 local static variables.
60 * Improved SMPI network model with a sender-side gap to account for multiple
64 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
65 only say if a communication is finished, no matter whether it succeeded or
66 failed. You can call MSG_comm_get_status() to know the status of a finished
68 * New function MSG_task_dsend() to send a task and detach it. When a
69 communication is detached, you are never notified of its success or failure
70 and the memory is released automatically once it is finished. This function
71 is useful when you don't care about the end nor the success of a
73 * Change the prototypes of action replay. Sorry for inconvenience,
74 but this is really more efficient this way (and to adapt your code,
75 you just have to fix the initialization, that shouldn't be too long)
76 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
77 ever managed to do anything useful with it.
78 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
79 takes a dynar of communications. It returns immediately and gives the
80 index of a finished communication (if any).
81 * New example: a basic implementation of the Chord P2P algorithm.
84 * New model for multi-core CPUs. You can now use the core attribute to
85 precise the number of cores of a host. This is a basic model. Every
86 process running on the host receives at most the power provided in
87 the DTD (throughput<=power). Total throughput of process cannot exceed
89 * New peer tag. This peer tag creates a tiny AS comprising a host and a
90 router linked by an up-link and a down-link (possibly asymmetrical).
91 This kind of pattern allows to easily build last-mile model style platforms.
92 Aggregating such patterns in a rule-based AS is thus the technique of
93 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
94 * New model for Vivaldi routing. We transformed the Vivaldi network model
95 into a Vivaldi routing model (based on the rule-based model). This allows to
96 combine Vivaldi based latencies with last-mile platforms.
99 * Introduce a new context factory "raw", highly inspirated from the
100 ucontext factory, but using manually crafted functions in assembly to
101 do the work in an efficient manner.
102 * Allow to change the used context factory at run time, not only at
103 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
104 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
105 contextes at runtime (only with raw contexts or ucontexts).
106 * Completely rewrote this module to allow parallel execution of user
107 processes. Use --cfg=contexts/nthreads:N to execute user processes
108 with N parallel threads (the default is 1, meaning no parallelism).
109 * Allow to decide dynamically between sequential and parallel modes.
110 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
111 processes in parallel only when their number is greater than or equal to P
113 * Added a check for NaN of IEEE754 infinite in the double entries of
117 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
118 won't output the state of processes when interrupted with Ctrl-C
119 * Add a new function xbt_dynar_to_array that transforms a dynar into a
120 NULL-terminated array. This may solve backward compatibility issues
121 due to the change to return type of SD_simulate. See also:
122 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
123 * Add new macros with variable number of arguments.
124 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
125 - in xbt/asserts.h: xbt_assert
126 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
127 - in xbt/ex.h: THROWF and RETHROWF.
128 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
130 * Change xbt_die() to accept a format string with arguments, just like printf.
131 * New data structure: xbt_lib_t, like a dict but more general and with better
135 * New configuration options
136 Options triva/categorized and triva/uncategorized can be used to generate
137 graph configuration files for Triva visualization tool.
138 * Configuration option tracing/platform is renamed to tracing/categorized
139 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
140 * New TRACE_user_link_variable interface:
141 User provides the name of the link and the tracing variable to attach to it
142 * the declaration of tracing categories must be done after the environment
144 * simpler tracing interface, just one way to declare categories
145 TRACE_category or TRACE_category_with_color, it is up to you
146 * links in the trace file are again identified by their names
147 * trace contains the full platform hierarchy exactly as declared using the ASes
148 * Options tracing/msg/[task|process]:1 groups the process by hosts
149 for both cases, tasks and processes must have names that are unique during the simulation
150 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
151 * The experimental option tracing/msg/volume is deprecated
152 its functionality may be reincorporated if needed
154 The tracing generates a trace file with unordered timestamped events,
155 because of the way the core simulator (surf) works. A script available
156 at the tools directory (fix-paje-trace.sh) can be used to put the events
157 in order. We have changed the tracing so it can generate ordered timestamped
158 events in the final trace, but depending on the simulator (and how much time
159 is simulated) that can lead to a huge memory utilization. It is desactivated
160 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
163 * Define a SIMGRID_VERSION macro in simgrid_config.h.
164 - We are trying hard to keep the API stable, but it may happen that
165 some things change (we're a research project after all, not a
166 nuclear plant operating system). If such things should happen, you
167 could rely on that macro to adapt.
168 - current value: 30600 for 3.06.00, aka 3.6
169 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
170 a number that can be compared with SIMGRID_VERSION.
171 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
172 assertions and verbose/debug logging events are disabled at compile time.
174 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
176 SimGrid (3.5) stable; urgency=medium
179 * New feature to any SimGrid-based simulator: Model-Checking
180 Check SIN#1 for more details.
183 * New Model SMPI (three-interval linear regression for correction factors)
184 See RR-7426, available at http://hal.inria.fr/inria-00527150
185 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
186 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
187 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
188 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
189 * See also src/smpi/README
194 - Tracing API changes: TRACE_start and TRACE_end should not be called
195 by user-code. They are automatically called by simulators created
196 with SimDAG, MSG and SMPI if the toolkit is compiled with
197 tracing_enabled=ON. Categories declaration and utilization remain the
198 same for MSG and SimDag.
199 - A function was added to the tracing API to declare categories with
201 - TRACE_category_with_color (char *category, char *color)
202 where color must be in the following format
203 "%f %f %f", red, green, blue
204 and red, green, blue are float values in the interval [0, 1]
205 - User can specify NULL as color parameter, or continue calling
207 On that case, the tracing system will define random colors
208 - The following command-line options are supported:
209 --cfg=tracing/filename:msg.trace
210 --cfg=tracing:1 (activate tracing, needed to use others)
211 --cfg=tracing/platform:1 (categorized resource use)
212 --cfg=tracing/uncategorized:1 (uncategorized resource use)
213 --cfg=tracing/msg/task:1 (task creation)
214 --cfg=tracing/msg/process:1 (process creation, migration)
215 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
216 --cfg=tracing/smpi:1 (SMPI interface tracing)
217 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
218 - examples of examples/msg/tracing updated
220 - DAXLoader and DOTLoader functions can generate tasks with categories
221 - A new function to attribute a category to SD tasks:
222 TRACE_sd_set_task_category (SD_task_t task, char *category)
223 * Tracing the MPI interface implemented by SMPI
224 - Collective operations are traced with states
225 - Point-to-Point operations are traced with states/links
226 - Tracing activated by a parameter "-trace filename" passed
227 to smpirun during execution (considering that simgrid
228 is compiled with tracing enabled)
229 - To run the simulation with gdb, the simulator
230 accepts --cfg=tracing/smpi:1 to trace SMPI
231 - tesh files to check if smpi tracing is ok
232 - See examples/smpi/NAS/DT-trace
233 * GTNetS tracing re-worked
234 - adaptation to the tracing system of GTNets to cope
235 with modifications regarding the fullduplex mode
236 - new tesh files to check if gtnets tracing is ok
239 * Asynchronous communications through the functions:
240 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
241 * New function: MSG_load_platform_script()
242 to make possible using a lua script instead of XML files to set up platforms
243 * New function: MSG_set_function
244 to associate functions to processes, used when bypassing the parser
245 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
247 Platforms: Add some more examples in examples/platforms
248 * Grid'5000: see www.grid5000.fr
249 * *_30000_hosts.xml: various huge files [mainly scalability testing]
252 * Change the XML format. This is a very important modification. SimGrid
253 3.5 introduces a new hierarchical format based on the notion of
254 Autonomous Systems. Compatibility with old format is ensured
255 through the perl script provided in the install bin directory
256 bin/simgrid_update_xml.
257 It is now possible to build platforms with specific routing
258 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
259 connect several platforms together. We will try to provide soon
260 set of realistic platforms exploiting these properties (have a
261 look at examples/platforms/ for the moment).
262 * Take the opportunity of the XML format change to be a good XML citizen:
263 rename link:ctn to link_ctn and similar changes (also dealed with by
265 * Add a new routing scheme (rule-based) using regular expressions. It
266 enables to have an extremely low memory footprint when the
267 underlying routing is simple and can be compactly described. You
268 need to have libpcre4-dev (perl regular expressions) installed if
269 you want to use this routing scheme.
270 * Revive the cluster TAG and allow to easily and efficiently (both in
271 term of memory and speed) connect clusters together. Have a look
272 at teshsuite/simdag/platforms/ to see how this can be done. With
273 this tag, you can create clusters with thousands of tasks at no
274 cost (have a look at examples/platforms/).
275 Note: clusters are implemented as ASes, so there is no need for an
276 enclosing AS tag if you have only one cluster in your platform.
277 * Add new generic functions in the public interface that allows the user
278 to call SURF 'create_resource' methods from your code (same
279 functionality as the XML bypass mechanism but with a much lighter
281 * Add a new model (enabled through command line --cfg=network/model:SMPI)
282 that uses a piecewise linear approximation to produce better
283 results when exchanging small messages.
284 * Add a new parameter to handle correctly full duplex link and account
285 for interferences between uplink and downlink communications
286 (activate with --cfg=fullduplex:1).
289 * Rename the SD_READY (all dependencies are satisfied and task is
290 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
291 dependencies are satisfied) state.
292 This prevents a confusion between the notion of "ready to schedule"
293 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
294 simulated" (SD_RUNNABLE) used by the simulation kernel.
295 * Change the way a task is considered as ready. Instead of removing
296 dependencies when a task is done, a counter is decreased. This way,
297 it is always possible to reach ancestors thanks to the
298 SD_taks_get_parents function (even after the end of the simulation.)
299 * Change the return type of SD_Simulate from (SD_task_t*) into
300 xbt_dynar_t. This function was in handling a dynar internally and
301 converted it into a NULL terminated array for historical reasons.
302 * New function SD_dotload(char*) to load a DAG described in dot
303 format. This loader and the corresponding examples require the
304 installation of the graphviz library.
305 * Fix a bug in the management of tasks of size 0 in the surf network
306 models. This problem was only visible with SIMDAG and you should
307 thus disregard results produced with earlier versions if you
308 relied on this feature (some tasks were blocked because of this).
309 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
310 even though your applications were doing only point-to-point
311 communications and sequential computations. Now you can really use any
312 model you want (of course, if you create real parallel tasks, which are
313 not implemented in most models beside ptaskL07, this will abort).
314 * Add an example that schedules a DAX on an heterogeneous platform
315 using a Min-Min strategy.
316 * New function SD_workstation_get_current_task() that returns the kind
317 of task currently running on a workstation in the sequential access
319 * Raise some warnings when unexecuted tasks remains at the end of the
320 simulation. This is usually caused by cycles in the DAG.
323 * New function: SIMIX_process_set_function() called by MSG_set_function
324 * Change the underlying waiting queue in semaphores so that a process
325 can wait on several of them simultaneously (as in waitany).
326 * Fix the way to handle tokens in semaphores so that all access patterns
327 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
328 * kill the dirty pimple SIMIX_message_sizes_output()
329 Please use (proper) visualization instead
332 * New data container: setset (set of sets of elements)
333 * New module: mmalloc (mapped malloc, allowing to have several
334 independent segments of malloc)
335 * New function: xbt_dict_cursor_set_data()
336 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
337 * New function: xbt_dynar_is_empty()
338 * New function: xbt_fifo_get_last_item()
339 * Fix xbt_dynar_shrink(): use the right element size.
340 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
341 uninitialized areas during expand.
342 * Fix semaphores: previous implementation was severely broken.
343 * Use library init/fini functions for our initialization.
344 - you can use logs and other feature as soon as you want in your
345 code (even before the xbt_init / MSG_init)
346 - xbt_exit is now a no-op and produce a warning when used.
349 * Port GRAS to new SIMIX mechanisms. This allows gras users to
350 benefit from the latest improvement to the simulation kernel.
351 * Kill measurement sockets for now. If you rely on them, sorry. This
352 release is not for you. This feature will be reintroduced in the
353 future, but we cannot delay the release any further.
354 * New function: gras_msgtype_get_name().
355 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
356 * Fix (at last) the pmm example: it should not randomly fail anymore.
358 Build chain: bug fixes and overall polishing
359 * Cmake is now stable enough. Hence, we killed the autotools.
360 * Port to windows ( TM :)
361 * Fix the 'make install' target.
362 No need to use 'make install-simgrid' anymore
363 * Introduce a 'make dist' target compiling a *source* archive
364 'make package' compiles a binary archive
365 * Compile java files only on need
366 * Add --cd and --setenv command line options to tesh
367 * Out of source builds are not fully supported yet, but we are close
368 * Enable supernovae and optimization flags by default for our users
371 * Add layer to set up environment directly from lua, without XML.
372 * The effect of gras_stub_generator can be achieved through
373 lua too (check examples/gras/console/ping_generator.lua)
375 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
377 SimGrid (3.4.1) stable; urgency=low
379 The "Polishing easter eggs is probably a good idea" release.
380 This is a bug fixes release only.
384 * Fix a bug preventing the tasks from begin garbage collected.
387 * Fix a bug occuring when a host involved in a communication fails.
388 This was not detected properly by the other peer involved in the
389 communication. Now, it's reported as a network error.
392 * Warn the user about loop dependencies in data flow of DAX files
393 * Obey the control-flow dependencies of DAX files
396 * Add option "enable_smpi" allowing to not compile SMPI.
397 Probably useful for the (Mac) users experiencing a build error here
398 * Improve the detection of lua5.1 and ruby1.8
400 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
402 SimGrid (3.4) stable; urgency=low
404 The "Easter in Cargese" release. Also known as (major changes):
406 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
407 ~> bindings were greatly improved
408 ~> new tracing infrastructure for better visualization introduced
410 * the "Welcome to configury modernity" release.
411 ~> we switched from autotools to cmake, and improved our cdash
414 A more detailled list of changes follow (full detail in svn log).
416 Java Bindings: Various Cleanups
417 * (install java-gcj-compat-dev on debian-like to use them)
418 * Remove put/get: no need to export deprecated interface in Java
419 Use send/receive instead.
420 * Cleanup the examples and add a README per directory
421 * Remove example autoDestination (that's the only way to go now)
422 * Remove example explicitDestination (was a plain copy of basic)
423 * Make JniException a runtime exception, so that there is no need to
424 declare the fact that you may encounter such a beast. I guess that
425 nobody will ever want to survive such error.
426 * Create specific errors for each MSG case of failure:
427 host failure, transfer failure, timeout, task cancelled
428 * Cleanup the exceptions that may get thrown by each function
429 * Other internal cleanups in Java bindings. Performance still bad :/
430 Ruby and Lua Bindings: create them
431 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
432 * That's new and great, you should try them out.
433 Same functionalities than Java bindings, only even less polished
435 * Kill the useless "rate" argument of SD_task_get_execution_time()
436 Everyone used to provide -1 as a value, it was not used, and the
437 semantic of a possible use wasn't even clear.
438 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
439 either as comm costs or compute costs to mean that there is no
440 such thing for that specific task.
441 * Add a SD_task_set_name() function
442 * Fix SD_task_unschedule() on typed tasks
443 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
444 * In DAX loader, accept useless 'level' attributes to <job> since
445 LIGO DAGs have them (seem to be to ease graphical representation).
447 * Add an example masterslave_mailbox.c using send/receive and not
448 the deprecated put/get interface.
449 * Kill the MSG_paje_output() function. It's a noop since 2 years.
450 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
452 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
453 (declare MSG_USE_DEPRECATED to still have the old name)
454 * Add a MSG_task_set_data() function
455 * About trace replay (see examples/msg/actions):
457 - Allow to work with splitted trace files for each process
458 Give the specific trace file as argument of each process,
459 and call MSG_action_trace_run(NULL)
460 You can still have one merged file for all processes.
461 - Fix implementation of collective operations
462 * Allow task_execute() on 0-sized tasks (closes #10063)
464 * This is the first release of SimGrid where SMPI is not considered
465 beta anymore (even if some corners should still be improved)
466 * Port over the new SIMIX_network submodule (internal refactoring)
467 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
468 * Implement more missing elements of the standard:
470 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
472 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
473 MPI_Scan() MPI_Get_processor_name()
474 - Added implementation of missing case for Alltoall (warning: it's
475 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
476 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
477 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
478 SMPI_MPI_Allgatherv()
480 - MPI_Waitsome() was broken
481 - Allow relative includes in smpicc
482 - Command line cfg argument 'reference_speed' was ignored...
483 - Some functions did not properly lead to auto-benching of user code
484 - smpicc passes -O2 by default (just like openmpi one)
486 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
487 * Bug fixes about timeouts during communications
488 * add SIMIX_message_sizes_output() as a pimple to write to file the
489 amount of messages per size. Use gnuplot to get histogram.
490 Pimple because that's the only user-visible function of simix,
491 defined directly in xbt.h (irk, sorry)
493 - Add a SIMIX_sem_get_capacity() function
494 - Fix interactions with processe resume/suspende
495 - release_forever() was stupidly broken
496 - Fix SIMIX_display_process_status() for processes in a semaphore
497 - Make SIMIX_sem_block_onto() user-visible
498 * Refactoring context stuff:
499 - Use pseudo-OOP for better modularity
500 - reimplement SIMIX_process_kill() without process_schedule() so
501 that the latter can take as invariant that it is called from
503 - Merge context_start into context_new for sake of simplicity
505 * Add a Vivaldi network model, coded live during SUD'10 ;)
506 * Rename configuration variables to start a hierarchy:
507 o cpu_model -> cpu/model
508 o network_model -> network/model
509 o workstation_model -> workstation/model
510 * New configuration variables:
511 o network/bandwidth_factor: correction to bandwith
512 o network/latency_factor: correction to latency
513 o netwotk/weight_S: correction to the weight of competing streams
514 * Add a long description to the models, that users can see with such
515 argument on the command line: --cfg=cpu/model:help
516 * --help-models display the long description of all known models
518 * config: add the ability to set a default value after registration
519 Does not override any previously set value (e.g. from cmd line)
520 * dict: allow to have integer key and data.
521 When so, you need to use the following functions
522 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
523 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
524 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
525 In contrary to regular dicts, the key is not malloced before copy.
526 Mixing scalar and regular elements in the same dict is not tested
528 * Allow to use xbt_dynar_shrink() to expend the dynar instead
529 Tracing for Visualization:
530 * SimGrid is now instrumented in order to generate a trace file for
531 visualization analysis: to use it, need to compile SimGrid with the
532 "tracing" option enabled, and instrument the program using SimGrid with
533 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
534 (among other functions).
535 * The instrumentation only traces the platform utilization for now
536 * Documentation to use the tracing functions and how to analyze the
537 traces with the Triva tool is written.
538 * More information about: SimGrid FAQ (in the section Tracing Simulations
541 * We moved to cmake as default build system. Autotools support will
542 be dropped soon. Check the FAQ for more info about how to use it.
543 * Greatly improved our cdash/ctest interactions
544 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
545 * Added memory checking tests with valgrind; lot of memleak fixing.
546 This may be the first release of simgrid with so few memory issues
547 * Added code coverage tests.
548 Our coverage is still improvable, but at least we see it on cdash.
550 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
552 SimGrid (3.3.4) stable; urgency=low
554 The "Desktop Grid needs love too" release (also called Xmas release).
557 * Major speedup in the maxmin system solving by using lazy evaluation
558 Instead of solving completely the maxmin system at each iteration,
559 only invalidate (and recompute) the modified parts.
560 This new feature is enabled in default models but you can try to
561 turn it on with "--cfg:maxmin-selective-update=1" for other models.
562 * Cas01 IMproved as default CPU model
563 This CPU model is the same Cas01 model, but it uses the
564 maxmin-selective-update flag and a heap structure to manage
565 actions on SURF kernel.
566 It reduces the complexity to find the next action to finish and,
567 consequently, it's faster than the old Cas01.
568 This is the new default CPU model (Cas01).
569 * Rename the old Cas01 model to Cas01_fullupdate
570 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
571 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
572 * CpuTI (CPU Trace Integration)
573 A new CPU model whose objective is simulate faster when using
574 availability trace files.
575 Instead of using a full featured, over engineered maxmin system for
576 CPU modeling, this model does the pre-integration of traces files
577 to calculate the amount of CPU power available, and so, executes
578 faster than the old CPU models.
579 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
580 * Use LV08 as default network model since it gives better accuracy
581 for small messages and shouldn't change things for big ones.
582 Use --cfg=network_model:CM02 to get the previous behavior.
585 ******************************************
586 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
587 ******************************************
588 * The new CPU model may changes simulations!
589 The point is that events occurring at the exact same timestamp
590 are not scheduled in the same order with the old and new
591 version. This may be enough to completely change the execution
592 of simulations in some cases.
593 * The new network model will change simulations!
594 This new model is more realistic than the previous one, so you
595 should consider redoing your old experiments with this model.
596 Sorry for the inconvenience.
599 * Introduce the supernovae compilation mode
600 When compiled that way, the whole SimGrid (or almost) is put in a
601 single compilation unit and compiled in one shoot.
602 This is to help gcc which has difficulties to inline stuff from one
604 The speedup seem to be above 15%, althrough more tests are needed on
605 amd64 to confirm that gain.
608 * Port of MSG's mailbox on top of SIMIX network
609 The put/get mechanism was greatly simplified on the way.
612 * New SIMIX network module. Provides:
613 - Mailbox: rendez-vous mecanism to find with who you want to speak
614 - Synchronous send/recv: easier and hopefully faster since the
615 logic is handled in the maestro process directly now
616 - Asynchronous send/recv: you dreamt of it? It's here now
617 Too bad that nobody cared enough to propagate the change to MSG.
618 * Add semaphores as SIMIX synchronization mechanism.
621 * new function SD_daxload(char*) to load a DAX file
622 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
623 * Introduce typed tasks. Specify its kind and cost at creation.
624 At scheduling, just give where it should be placed, and the cost
625 for each involved resource is automatically computed.
626 Existing constructors so far (more to come of course):
627 - SD_task_create_comm_e2e() for end-to-end communication
628 - SD_task_create_comp_seq() for sequential computation
629 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
630 * new function SD_task_dump() for debuging display
631 * new function SD_task_dotty(task,FILE*) writing to file the info
632 about the task in dotty format
633 * SD_task_dependency_exists() can now cope with having one of its
634 arguments NULL. If so, it tests whether the other argument has any
636 * Add getters on list of preceding/following tasks:
637 SD_task_get_parents(task) and SD_task_get_children(task)
638 * Add getters on amount of workstations and list:
639 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
640 * Add getter on task kind: SD_task_get_kind(task)
641 * Update the start_time and finish_time of tasks on completion/failure
642 * Bugfix: Remove task from state swags when destroyed
645 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
648 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
649 dynar with one separate thread per value of the dynar.
650 * Change the prototype of xbt_thread_create(), sorry.
651 Added a boolean parameter indicating whether we want to join this
652 thread (used in SG only for now)
653 * Implement xbt_thread_join and xbt_thread_yield in SG also.
656 * GTNetS wrappers should now be usable again (and betterly tested too)
657 * Fix a major regression from 3.2 where the timeout provided to
658 MSG_task_put_with_timeout() was used as absolute time before which
659 the comm should be done.
660 * Start to fix the <cluster> tag.
661 - Internal links should be good now (beside of the loopback, which
662 use the private link instead)
663 - paths to the external world is still rather broken
664 - the <route:multi> tag is just broken. Actually that's brain-dead.
665 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
666 to make it less stupid
667 ** Check your platform with teshsuite/simdag/platforms/flatifier **
668 * Fix a source-level compatibility glitch from 3.2: after defining
669 MSG_USE_DEPRECATED, you can use the old name
670 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
671 * Allow to compile from the SVN with automake 1.11
672 * Fix some problems when using the "start_time" tag in deployment XMLs.
673 * Fix #8569: XBT/synchro.h has redundant declarations
674 * Fix #8563: MSG return values and exceptions
675 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
676 * Integrate patch #8636: Obey DESTDIR when installing documentation.
677 Thanks to Robson Peixoto.
678 * Fix a vicious bug in dictionaries inducing that some elements were
679 not freed on xbt_dict_free()
681 Portability report of this version:
682 * Main portability targets:
683 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
685 - mac leopard on i386
686 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
687 but nothing critical.
688 * Other platforms: windows, AIX and others were not tested for this release
690 Timing report of this version:
691 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
692 scenario parameters). From 8h to a few seconds in desktop grid settings.
693 * Supernovae brings about 25% speedup on i386.
695 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
697 SimGrid (3.3.3) stable; urgency=low
699 The "Need for Speed" release.
701 The timings done to validate the 3.3.2 were faulty.
702 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
704 The problem was a conversion from a manually handled vector to
705 xbt_dynar_t on the critical path.
706 xbt_dynar_foreach calls functions, inducing stack management crap.
708 We inlined these functions and xbt_dynar_foreach is now breath taking.
709 We also inlined xbt_swag_belong on the way.
711 Here are some approximate speedup measurements (on master/slaves
712 simulations lasting between 10s and 20s each):
713 3.3.1 -> 3.3.2: about same performance
714 3.3.2 -> 3.3.3: 40% speedup
715 3.3.1 -> 3.3.3: 40% speedup
716 3.3.1 with inline patch -> 3.3.3: 30% speedup
718 Our reading is that the refactoring which occurred in 3.3.2 made us
719 suffer much more from the xbt_dynar_foreach low performance, but
720 once we solved this, this refactoring proved to be very performance
721 effective. From the 40% speedup, somehow, 10% are due to the
722 inlining and 30% to the refactoring.
724 That's a pitty that gcc cannot inline functions placed in other files
725 alone. We have to choose between:
726 - break the encapsulation (by putting private data structures and
727 accessors in headers files to help gcc)
728 - live with low performance
729 - switch to a decent compiler such as icc (not quite possible).
731 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
733 SimGrid (3.3.2) stable; urgency=low
735 The "Simplicity does not preceed complexity, but follows it" release.
737 The main contributors of this release were (lexical order):
738 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
741 * Extract the routing logic into its own object.
742 (was dupplicated in network.c and workstation_LV07.c;
743 Allows to implement other ways of storing that info)
744 => kill now useless network_card concept
745 - Use dynar to represent routes (instead of void** + int*)
746 - kill link_set (use surf_network_model->resource_set instead)
747 - Add a command-line option to choose the routing schema to use
748 - Add three new models:
749 * Floyd (shortest path computed at initialization)
750 * Dijikstra (shortest path recomputed all the time)
751 * Cached Dijikstra (shortest path computed on need)
752 All these models where contributed by Silas De Munck, and are
753 described in his ICCS09 paper.
755 * Simplify model declaration
756 (less redirections, less function to write when defining a model)
757 - Factorize stuff between models:
760 surf_model_resource_set(model)
761 surf_model_resource_by_name(model, name)
762 - Unify the types of models in s_surf_model_t (using an union)
763 - Embeed fields of common_public directly into s_surf_model_t
764 - Rename model methods:
765 action_free ~> action_unref
766 action_change_state ~> action_state_set
767 action_get_state ~> action_state_get
768 - Change model methods into functions :
769 (model)->common_public->action_use ~> surf_action_ref
771 * Implement a generic resource; use it as ancestor to specific ones
772 (allows to kill duplicated code in models)
773 Drawback: timer command don't need no name nor properties;
774 workstation_CLM03 don't need no properties
775 (but I guess we can live with those few bytes wasted)
777 * Improve the action object model
778 - implement a constructor avoiding dupplicated code about field
779 initialization in generic_action part.
781 * Kill the SDP model: it has an external dependency, is deprecated
782 in flavor of modern lmm models, and didn't compile since a while
785 * Relocation of the context module from XBT to SIMIX.
786 (the context were decoupled from the simix processes, duplicating a lot of code)
787 => a lot of code was factorized
788 - less overhead is introduced during scheduling
789 - simpler API for the context factory
790 - the logic for process creation,destruction and manipulation was simplified
791 * Simplification of the s_smx_process_t data structure.
792 => accesing the simix level data associated to a process is faster now,
793 and the code is a lot more readable.
796 * Implement some more MPI primitives:
797 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
798 -implementation: Bcast: flat or 2-ary tree (default),
801 Allreduce: Reduce then Bcast
802 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
803 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
804 Alltoallv: flat tree, like ompi
806 * Add support for optimized collectives (Bcast is now binomial by default)
807 * Port smpirun and smpicc to OS X
810 * Kill SD_link_get_properties: hard to maintain and makes very little sense
811 Shout out if you used it.
814 * Display the list of still queued messages in SG mode when existing
818 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
819 * Add xbt_graph_node_get_outedges() [Silas De Munck]
820 * Add xbt_str_from_file(FILE*)
821 * Add xbt_dict_get_key achieving a linear reverse search
822 * Remove the context module
824 Portability report of this version:
825 * Main portability targets:
826 - Linux(debian)/x86/context
827 - Linux(debian)/x86/pthreads
828 - Linux(debian)/amd64/context
829 - Linux(debian)/amd64/pthreads
830 On these, we still have the eratic breakages of gras/pmm and
831 amok/saturate_sg reported in previous version. We still think
832 that the tests are the cause of the fault, not the tested code.
834 - Mac OSX Leopard/x86/context
835 Still false negative in tesh autotesting.
836 Smpi still fails, but this time because readlink does not accept -f
837 Everything seems to work properly beside of that.
840 - AIX version 5.3 (only tested contexts this time)
841 Smpi still fails there because mktemp is not installed.
842 Everything seems to work properly beside of that.
844 I managed to compile it for the first time, but several breakages.
845 Won't delay the release for this exotic platform.
847 * Windows: it's still lagging behind. If you want to help, please
850 Timing report of this version:
851 This version seem to be more than 5% faster than 3.3.1 (on linux
852 64bits with contextes). The gain is less than expected, we are
853 investigating this for next release.
855 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
857 SimGrid (3.3.1) stable; urgency=low
860 * Implement a --cfg-help to show existing configuration variables
861 * Build chain do not require doxygen in maintainer mode
864 * fix a bug on struct sizeof computation, which prevented the
865 exchange of arrays of structs in some conditions
866 - added a regression test about this in datadesc_usage
867 * Allow the exchange of 0-long dynamic vectors.
868 - for that, use -1 as indicator of dynamic size instead of 0
869 - This implied to change any size from unsigned long to long,
870 reducing a bit communication abilities, but I guess that with
871 64bits being quite common, this is more than enough.
872 - This also induce a protocol change, thus bumping network protocol
873 version from 0 to 1 (if we have external users, we have to get
874 clean on that point too ;)
875 - added two regression tests about this in datadesc_usage
876 * Be more verbose when propagating local exceptions
877 This helps debugging.
878 * Display the status of simulated processes when receiving SIGINT in
882 * Allow to control the simulation from a trace file.
883 New functions MSG_action_register() and MSG_action_trace_run()
884 The first one allows to associate a function execution to each
885 kind of action while the second one parses a trace file and
886 triggers the corresponding actions within the system.
887 For now, only a toy example is provided in examples/msg/actions
888 * Add an exemple of process migration in examples/msg/migration
889 * Fix a bug in task exchange which broke MSG_task_get_sender()
890 Add a teshsuite regression test for that.
891 [Bug: if MSG_task_get_sender() is called after sender exit,
893 * Fix a bug which prevented suspend/resume to work properly
894 * Display the status of simulated processes when receiving SIGINT
895 This fixes a regression of v3.3. due to the introduction of SIMIX
896 * Bug fixing in failure management:
897 - trace could not start by a failure at time 0
898 - failure during communications were not working
901 * Add SIMIX_process_set_name() to change the name of the current
902 process in the log messages.
903 * Store smx_hosts in a dict since we only retrieve them by name
904 * Move the configuration infrastructure to surf
907 * Move the configuration infrastructure to surf
910 * Massive internal cleanups:
911 - Store internal structures on processes instead of hosts (allows
912 to have more than one process per host, in addition of being more
914 - Cleanup the initialization/finalization process
915 - Kill a whole bunch of unneeded synchronization:
916 processes run in exclusive manner within the simulator
917 - Move queues from global tables to process data fields
919 - now accept -platform and -hostfile arguments
920 - Pass the right rank value to processes according to the hostfile
921 * Compile the examples by default, and use them as regression tests
922 * Implement MPI_Wtime()
923 * Change the reference speed to a command line option
926 * TCP_gamma can now be specified as command line option using
927 --cfg=TCP_gamma:10000000.0
928 * Change the --surf-path cmd line option into --cfg=path:
931 * Also include strbuff from xbt.h public header
932 * xbt_ex_display(): do not free the exception after displaying
933 This allows to do more with the given exception afterward.
934 Users should call xbt_ex_free() themselves.
938 Portability report of this version:
939 * Main portability targets:
940 - Linux(debian)/x86/context
941 - Linux(debian)/x86/pthreads
942 - Linux(debian)/amd64/context
943 - Linux(debian)/amd64/pthreads
944 These targets fail about 1/10 of times on gras/pmm, but we believe
945 that this is because of the test, not because of simgrid.
946 amok/saturate_sg fails even more rarely, and the test may not be
949 - Mac OSX Leopard/x86/context
950 The test suite still spits tons of errors because some obscure
951 force prevents us from removing the temporary directories
952 arguing that they still contain some metadata I've never heard of.
953 Smpi fails because seq is not installed.
954 Everything seems to work properly beside of that.
957 - AIX version 5.3 (both contexts and pthread)
958 Smpi still fails there because mktemp is not installed.
959 XML inclusions seems rosty on AIX.
961 * Windows: it's still lagging behind. If you want to help, please
964 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
966 SimGrid (3.3) stable; urgency=high
970 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
973 * Introduce the SIMIX module: factorize code between MSG and GRAS.
976 Until now, GRAS were using MSG as an interface to SURF. It was
977 quite difficult because both interface have several differences
978 (MSG channels vs GRAS sockets were the most notable point).
980 This also opens the gate to SMPI (which should occur soon) and speed
981 up simulations by to 40% (even if it were not the main goal).
983 **************************************
984 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
985 **************************************
986 The point is that events occuring at the exact same timestamp are
987 not scheduled in the same order with the old and new version. This
988 may be enough to completely change the execution of simulations in
989 some cases. Sorry for the inconvenience.
991 * Cleanup and upgrade the XML format to push further scalability
992 issues (check http://hal.inria.fr/inria-00256883/ for more info)
994 * Improve the testing infrastructure with tesh. Now a very large part of
995 the code is tested not only by being run but also by checking that the
996 output match an expected output [Mt].
998 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
999 is really less memory-demanding, which should allow you to use
1000 larger files in SimGrid [AL].
1002 * Inform valgrind about our contextes, so that it becomes usable
1003 with the default (and more effecient) version of SimGrid
1004 [contributed by Sékou Diakite, many thanks]
1007 * Introduce a listener thread in charge of receiving incomming
1008 messages from the network. It allows to overlap communication and
1009 computation but most notably, it removes some stupid deadlocks due
1010 to the fact that so far, a process could not send and receive at
1011 the same time. This made most non trivial communication schema
1013 * Convert the PIDs from long int to int to match the MSG ones (and
1014 linux ones too) [Mt]
1015 * New function: gras_agent_spawn() to launch a new process on
1016 current host. Only working in simulation for now. [Mt]
1017 * New function: gras_os_hostport() returning a constant form (ie,
1018 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
1021 * Make the backtrace of exceptions more human readable [Mt]
1022 * New module: xbt/str [Mt]
1023 a ton of string utility functions (split, join, printf to a newly
1024 allocated buffer, trim, etc)
1025 * New module: xbt/hash [Mt]
1026 SHA1 hashing algorithm (more to come if needed)
1027 * New module: xbt/synchro [Mt]
1028 synchronization tools (mutex and conditions) working the same way
1029 in simulation and in real life (mainly useful for GRAS, but not
1031 * New module: xbt/queue [Mt]
1032 classical producer/consumer synchronization scheme
1033 * xbt_dynar_new_sync() creates a synchronized dynar. All access
1034 (using the classical functions will get serialized) [Mt]
1035 * Make dictionary internal table dynamic. No need to specify its size
1036 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
1038 * Make sure the log channels are organized as a tree under windows
1039 (because of ANSI C compatibility issue, any channel were child of
1040 root directly) [Mt].
1043 * Cleaned many thing in surf and fixed a few bugs [AL].
1044 * Add a nice command line configuration mechanism to compose models [AL].
1045 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
1046 the previous one (KCCFLN05). It relies on something that looks like
1047 a max-min sharing mechanism but cannot be written as such. A new solver
1048 was thus designed [AL].
1049 * Add a new solver to lmm. Based on Lagrange optimization and
1050 gradient-based descent, it enables to efficiently maximise systems s.a
1052 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
1054 This solver enables to propose two new network models for TCP Reno and
1055 TCP Vegas based on Low's work. These models still need to be fully
1056 tested though [Pedro Velho].
1059 * Bug fix in SD_simulate. Now the time bound given as argument is
1061 * Use the new parallel task model (ptask_L07) as default.
1062 * Use the SURF command line configuration mechanism.
1063 * 0-size tasks (for synchronization) should now work.
1065 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
1067 SimGrid (3.2) stable; urgency=high
1071 We still experience issues on this platform, but we believe that at
1072 least MSG is usable.
1074 GRAS API BREAKAGE (for simplification purpose, sorry):
1075 * the gras_msgtype_by_name is not used anymore. Instead of
1076 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
1077 you can write (and must)
1078 gras_msg_send(toserver, "request", &request);
1079 - If you still want to pass a gras_msgtype_t to the function (to cache
1080 the type and avoid the lookup time), use the gras_msg_send_() variant.
1081 - Impacted functions:
1082 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
1083 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
1084 * The callbacks are now expected to return 0 when everything went well
1085 (just like the main() function)
1087 GRAS new features and improvements:
1088 * New module mecanism where user code can use per process globals [Mt]
1089 This is similar to gras_userdata_*() functions, but for libraries. It
1090 factorize some code developped over and over in the examples and AMOK.
1091 It has still to be documented and used (only amok/peermanagement is
1093 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
1094 loss when they were small enough to fit into the buffer and sent quickly
1095 enough so that they can all get received in one shoot.
1096 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
1097 if not found. Use the *_or_null() variant for the old semantic.
1098 * In gras_msg_handle, do not discard messages without callback.
1099 They are probably messages to be explicitly awaited later (ie, proofs of
1100 mis-synchronization in userland since they are sent before being awaited)
1101 No big deal usually.
1102 * gras_socket_meas_send/recv: semantic changed!
1103 The numerical arguments used to be (1) the total amount of data to send
1104 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
1105 messages. This was need for the fool willing to send more than MAXINT
1106 bytes on quite fat pipes.
1109 * Do really rename the hostmanagement module to peermanagement. [Mt]
1110 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
1111 but this is rather new and this was documented in the module
1112 documentation (poor excuses, I admit)
1113 * Bandwidth measurement semantic changed! This follows the changes to
1114 gras_socket_meas_send/recv explained above.
1117 * A sequential mode has been added to the workstations. When a workstation
1118 is in sequential mode, it can execute only one task, and the other tasks
1119 are waiting in a FIFO. [Christophe Thiery]
1122 * The KCCFLN05 workstation model now handles parallel tasks. It is the
1123 model for SIMDAG. [Christophe Thiery]
1124 * Bug fix in the maxmin solver: Some values were close to 0 instead of
1125 equal to 0, which caused some bad behaviors in
1126 saturated_constraint_set_update. I now use a threshold mechanism like in
1130 * When running manually src/testall, you select specific units [Mt]
1131 testall is the result of our cunit mecanism, and should replace all
1132 the scripty thingy around since bash don't run easily on billware.
1134 * A mallocator system has been added. [Christophe Thiery]
1135 Mallocators allow you to recycle your unused objects instead of freeing them
1136 and allocating new ones.
1138 Documentation update:
1139 * FAQ reworking + New FAQs:
1140 - "Valgrind spits tons of errors!" [Mt]
1141 - "How to repport bugs" [Mt]
1142 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
1143 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
1144 - Communication time measurement within MSG [AL]
1145 - I experience weird communication times when I change the latency [AL]
1146 * GRAS tutorial [Mt]
1148 - an introduction to the framework and to the used communication model
1149 - an initiatic tour introducing the most proheminent features:
1151 . Lesson 0: Installing GRAS
1152 . Lesson 1: Setting up your own project
1153 o Part 2: Message passing
1154 . Lesson 2: Exchanging simple messages
1155 . Lesson 3: Passing arguments to the processes (in SG)
1156 . Lesson 4: Attaching callbacks to messages
1157 . Lesson 5: Using globals in processes
1158 . Lesson 6: Logging informations properly
1159 . Lesson 7: Using internal timers
1160 . Lesson 8: Handling errors through exceptions
1161 . Lesson 9: Exchanging simple data
1162 . Lesson 10: Remote Procedure Calling (RPC)
1163 . Lesson 11: Explicitely waiting for messages
1164 . Recapping of message passing features in GRAS
1165 - A HOWTO section containing:
1166 o HOWTO design a GRAS application
1167 More are due, of course. They will come latter. In the meanwhile, you can
1168 check the examples which are still here.
1170 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
1172 SimGrid (3.1) stable; urgency=high
1176 There was a stack corruption somewhere, visible only when optimizing
1177 with these versions. [Vince]
1180 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
1181 module that enabled to play with Directed Acyclic Graphs. It is built
1182 directly on top of SURF and provides an API rather close to the old
1183 SG. Some old codes using SG are currently under rewrite to check that
1184 all needful functions are provided. [Christophe Thiery]
1187 * Complete rewrite of the KCCFLN05 workstation model. It is now an
1188 extension of the classical CLM03 model that gracefully handles
1189 failures. This is now the default model for MSG and GRAS. It doesn't
1190 handle parallel tasks yet though. [AL]
1191 * Bug fix: Weights were not correctly set in the network part.
1192 WARNING: This may have resulted in incorrect results with simulations
1193 where there are more than one flow on a given link. [AL]
1196 * After a (long ?) discussion on simgrid-devel, we have decided that the
1197 convention we had on units was stupid. That is why it has been decided
1198 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
1199 WARNING : This means that all previous platform files will not work as
1200 such with this version! A warning is issued to ask users to update
1202 A conversion script can be found in the contrib module of the CVS, under
1203 the name contrib/platform_generation/surfxml_update.pl [MQ]
1206 * Bug fix: Processes were started in reverse order, wrt deployment file.
1207 WARNING: if your code relies on this bug, please fix it. [AL]
1208 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
1209 being executed on two different locations. [AL]
1210 * Bug fix: Failures are now better supported thanks to Derrick's tests
1211 (there was many failure situations I hadn't thought of and that weren't
1212 correctly handled). [AL]
1213 * New function: MSG_host_is_avail indicates you whether a given m_host_t
1217 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
1218 Exception occurring on server-side are propagated back to client (!).
1220 API CHANGE: the callback changed their prototype. Change:
1221 int my_handler(gras_socket_t expeditor, void *payload_data) {
1223 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
1224 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
1226 * New! function: gras_msg_handleall to deal with all messages arriving
1227 within a given period.
1228 * New! function: gras_socket_server_range to get a server socket in a
1229 range of port numbers (ease to avoid port number conflicts) [MQ]
1230 * New! gras processes display their backtrace when they get a SIGUSR1
1231 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
1232 Sweet to debug RL processes [MQ]
1236 - Do not force experiment sizes to be expressed in kb, or it becomes
1237 impossible to measure the latency this way (needs one byte-long tests)
1238 WARNING: this changes the amok_bw_* function semantic. [MQ]
1239 - Implements the link saturation stuff. [MQ]
1240 * Peer management module:
1241 New! module factorizing code that we wrote over and over [MQ].
1244 * New module: cunit (my jUnit implementation in ansi C) [MQ]
1245 - Test units are placed directly into the library code, they get extracted
1246 automatically and placed into the src/testall binary.
1247 - Convert most of the XBT tests to this system.
1248 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
1249 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
1250 live in the same C code. This required to change a little bit the API
1251 of surfxml parsing but shouldn't be an issue for end-users. [AL]
1252 * New module: sparse graph structure with basic algorithms (this is work
1253 in progress and the API is not considered to be frozen yet). [AL]
1254 * Display more information on backtraces: source line & function names are
1255 now displayed just like valgrind does (rely on addr2line tool) [MQ]
1256 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
1257 * Reworked a little bit some #include statements to load only required
1258 headers. Some user code that relied on SimGrid to include stdlib or
1259 stdio may need to include it by themselves. [AL]
1260 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
1262 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
1263 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
1264 but I guess that almost nobody used those parts. [MQ]
1266 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
1268 SimGrid (3.0.1) stable; urgency=low
1271 * Unfortunately, I had missed 5 misnamed functions:
1272 xbt_fifo_item_t xbt_fifo_newitem(void);
1273 void xbt_fifo_freeitem(xbt_fifo_item_t);
1274 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
1275 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
1276 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
1277 They're now deprecated. Please use their new versions:
1278 xbt_fifo_item_t xbt_fifo_new_item(void);
1279 void xbt_fifo_free_item(xbt_fifo_item_t);
1280 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
1281 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
1282 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
1284 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
1285 * Documentation: xbt_log module unmercifully reworked [MQ]
1286 * Bugfix: there was a problem with the ending of contexts with
1287 the pthread backend. It caused some weird deadlock or behavior
1288 depending on the pthread implementation. [AL]
1289 * Bugfix: get the exceptions raised in the simulator repport where
1290 and why they come from when they are not catched in time [AL, MQ]
1293 * Bugfix: Do repport the error when two non-connected hosts try to
1294 exchange data (Thanks to Flavien for stumbling into this one) [AL]
1297 * Add additionnal checkings on communications. Assert that two
1298 communicating hosts are connected by a set of links... [AL]
1301 * Add additionnal checkings on channel values in communication [AL]
1302 * New: MSG_task_get_source to see on which host a task was generated [HC]
1303 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
1304 the number of tasks waiting to be received on channel and sent
1306 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
1307 waits for the first task coming from a given host.. [AL]
1309 GRAS new functionnalities: [MQ]
1310 * Enhance the parsing macro to allow the size of multidimentional objects
1311 to be given thru annotations.
1312 * New example (and documentation): Matrix Multiplication a la RPC
1313 (as when I was young!) and fix a bunch of bugs found on the way.
1315 GRAS performance improvements: [MQ]
1317 * Reduce the amount of cbps creation/destruction by making it static to
1318 datadesc_send/recv() and using a (newly created) cbps_reset (based on
1321 * Change libdata to a set so that we can search for stuff by ID (and thus
1322 reduce the insane amount of dict lookups)
1325 * Actually implement gras_datadesc_copy() so that we don't have to mimick
1326 RL communication on top of SG since it's so uneffective.
1327 It may also be used for inter-thread communication in RL, one day.
1328 * Use gras_datadesc_copy() to exchange messages on top of SG
1330 - improve message exchange performance on top of SG
1331 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
1332 * Don't exchange on the network the size of the used part of buffer,
1333 instead, specify the possible buffer size to read().
1335 - reduces the amount of read/write calls (one pair per exchange)
1336 - reduces the amount of exchanged data (the size)
1337 - allows to retrieve all arrived data on receiver side, if we don't need
1338 it right now (subsequent read will peek the buffer)
1339 - allows the receiver to proceed with the begining of the stream before
1340 everything is arrived
1341 - make it possible to build an iov transport (using readv/writev)
1343 - take care of the data with non-stable storage (like stacked data),
1345 * If possible, TCP send uses vector I/O (when writev() is here)
1346 - Don't use it for receive since we send data sizes and data on the
1347 same stream, so we wouldn't be able to chain large amount of chunks
1348 before having to flush the stuff to read the size.
1349 * Rework the transport plugin mecanism to simplify it and reduce the
1350 amount of pointer dereferencement when searching for the right function
1353 * I guess that now, we do almost as few system calls as possible while
1354 doing as few data copy as possible.
1356 To improve it further, we could try to send all the sizes first and then
1357 all the data (to use iov on receiving size), but it's only a partial
1358 solution: when you have 2 dimensional data, the sizes of the second
1359 dimension is data of the first dimension, so you need 3 streams.
1361 I'm not sure the potential performance gains justify the coding burden.
1363 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
1365 SimGrid (3.00) stable; urgency=high
1368 * New! Give the possibility to hijack the surf parser and thus bypass
1369 MSG_create_environment and MSG_launch_application. Have a look at
1370 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
1372 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
1374 SimGrid (2.96) unstable; urgency=low
1379 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
1380 This deprecates the xbt_error_t mecanisms.
1381 It modifies (simplifies) all XBT and GRAS API.
1382 MSG API keeps unchanged (exceptions raised by XBT are catched from
1383 within MSG and masked with existing error handling facilities)
1386 * New! Add a FATPIPE model. [AL]
1387 * New! Add a parallel task model. [AL]
1388 * New! Add automatically a loopback interface (in the default
1389 network model) if none was precised.
1392 * Bugfix: MSG_process_resume now works with the current running process.
1394 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
1395 * Modification of MSG_task_get_compute_duration. Once a task has been
1396 processed, the value returned by this function is now equal to 0. [AL]
1397 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
1398 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
1399 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
1400 of a m_task. For now, MSG_task_cancel only works with computation
1402 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
1403 of the processor (in Mflop/s) regardless of the current load on the
1405 * API Change: use proper naming convention for MSG_getClock and
1406 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
1408 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
1409 This function changes the priority of a computation task. This priority
1410 doesn't affect the transfer rate. A priority of 2 will make a task
1411 receive two times more cpu power than the other ones. This function
1412 has been added to suit the needs of Nguyen The Loc and hasn't been that
1413 much tested yet. So if it fails, please report it and send me your code.
1415 * API Change: removed all functions and types that were marked "deprecated"
1416 since many months. Renamed MSG_global_init_args to MSG_global_init.
1418 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
1420 SimGrid (2.95) unstable; urgency=low
1423 * Steal some nice code to GNU pth to fix context detection and usage [AL]
1424 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
1425 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
1428 * Bugfix: Allow absolute paths for platform description files [MQ]
1429 * Bugfix: do free the variables after use. Leads to drastic performance
1431 * Implement max_duration (ie, timeouts) on resources [AL]
1434 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
1436 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
1437 the needed support (timeouts) [AL]
1440 * Implement measurement sockets. You can now get the bandwidth between two
1441 hosts thanks to AMOK (see below). [MQ]
1442 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
1443 dynar over the network (yeah) [MQ]
1444 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
1445 * simple/static token-ring example. [Alexandre Colucci and MQ]
1446 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
1447 in place before [MQ]
1450 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
1451 type parsing. "short" and "long" modifiers were also ignored; other
1452 modifier (such as reference level) are still ignored. [MQ]
1453 * Embeed the buffer size within the buffer itself on SG. [MQ]
1454 That way, send() are atomic and cannot get intermixed anymore (at least
1455 the ones which are less than 100k; bigger messages still have the issue)
1456 * Array size pushed by the field, not by the field type (or each
1457 and every long int will push stuff to the cbps) [MQ]
1458 * use select() to sleep since it allows to portably sleep less than one
1461 GRAS (minor cleanups)
1462 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
1465 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
1466 * type category 'ignored' killed as it was never used and were difficult
1468 * whether a type can cycle or not is now a flag, leaving room for more
1469 flags (as "ignored", if we feel the need one day ;)
1470 * Rename raw sockets to measurement sockets since "raw" has another
1471 meaning in networking community.
1474 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
1475 and offers features not belonging to GRAS but that most applications
1476 need. One day, it may be a set of plugins loadable at runtime.
1477 * New module: bandwidth
1478 bandwidth measurement between arbitrary nodes running this module. [MQ]
1480 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
1482 SimGrid (2.94) unstable; urgency=low
1484 The first beta release of SimGrid 3 !
1488 * Update the main page and the FAQ. Adding references to gforge.
1491 * Add a gras_os_getpid function.
1494 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
1495 * Extend the logs so that they also print PID, hostname, date, ... if
1497 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
1498 and kill the old version which were in testsuite/
1499 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
1503 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
1504 for users. Instead, each programming environment (GRAS, MSG,...) use it
1505 when needed to provide such a feature to users.
1506 Don't shortcut the mecanism or you will also shortcut the virtualization
1507 you need on the simulator.
1511 * Cleanups in configury with regard to compile optimization/warning flags.
1512 Also add -fno-loop-optimize to any powerpc since it's the optimization
1513 killing gcc (< 3.4.0).
1514 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
1515 needed by MSG examples complications
1516 * Borrow configury beautifications from PHP
1519 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
1520 warning (thanks loris for stumbling into this one).
1521 * Bugfix: stop loading private headers (gras_config.h) from the public
1525 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
1526 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
1527 RL would imply a DNS resolver, which is *hard* to do in a portable way
1528 (and therefore delayed).
1529 * Implement a real timer mecanism and use it in timing macros. This allows
1530 to avoid rounding errors and get a 0.000005 sec precision in timing
1531 macros. While I was at it, various cleanups:
1532 - allow to declare more than one timed section per file (fix a stupid bug)
1533 - move some private declaration to the right place
1534 - merge conditional execution and timing macros into emulation module
1535 - document the module
1536 - make sure the module cleanups its mess on gras_exit
1537 * Documentation improvements:
1538 - (new) how to compile applications using GRAS
1539 - (new) emulation support (timing macros)
1541 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
1543 SimGrid (2.93) unstable; urgency=low
1545 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
1548 - Use Paje properly where used. Still to be sanitized properly.
1549 - Portability fix: Add an implementation of the contexts using pthread
1553 - Add xbt_procname(): returns the name of the current process.
1554 Use it to show the current process's name in all logging.
1556 - fix detection of older flex version and the reaction, since we do
1557 depend on modern ones (we use lex_destroy)
1558 - Better separation of SG and RL in the libs: remove all simulation code
1559 from libgras. As a result, this lib is now only 200k when stripped.
1560 Some of the xbt modules may also be duplicated (two sets and such) and
1561 should be cleaned/killed before SG3.
1562 - Insist on using xlC on AIX because of weird problems involving gcc there.
1563 - Cleanup the make remote stuff. This is now done by scripts
1564 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
1565 mainly for our private use, but we're working on changing them to user
1568 - Bugfix: flush the socket on close only if there is some *output*.
1569 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
1571 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
1574 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
1576 SimGrid (2.92) unstable; urgency=low
1578 Alpha 3 on the path to SimGrid 3
1582 - New! First try of benchmarking macros.
1583 - New! First try so that gras_stub_generator generate deployment and
1584 remote compilation helpers.
1586 - Bugfix: Initialization fix in msg_test.
1590 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
1592 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
1594 - API Change: gras_os_sleep to take the amount of seconds as a double.
1595 Accepting an int was error prone since it was the only location where
1596 seconds were coded as such. It leaded to damn rounding errors.
1597 - Bugfix: Hard to belive that timers ever worked before this.
1599 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
1601 SimGrid (2.91) unstable; urgency=low
1603 Alpha 2 on the path to SimGrid 3
1607 - Bug fix in the lmm_solver.
1609 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
1610 through the function MSG_paje_output.
1611 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
1612 - It is possible to bound the rate of a communication in MSG with
1613 MSG_task_put_bounded() (was already in the previous version but I had forgotten
1614 to write it in the changelog).
1615 - Bug fix to let GRAS run on top of MSG until we move it directly on top
1620 - Various cleanups to the autotools stuff
1621 - Begin to move Gras examples to examples/gras/
1622 - Let make distcheck work again (yeah!)
1624 - documentation overhauled using doxygen.
1625 gtk-doc-tools is dead in SimGrid now.
1626 - Automatically extract all existing logging categories, and add the list
1627 to the documentation (long standing one, to say the less)
1629 - Cleanup the known architecture table. Reorder the entries to group what
1630 should be, and use a more consistent naming scheme.
1631 (some of the test dataset are still to be regenerated)
1632 - New! Allow library to register globals on each process just as userdata
1634 This is implemented using a xbt_dict and not a xbt_set, so we loose the
1635 lookup time (for now).
1636 Use it in msg and trp.
1637 This cleans a lot the internals and helps enforcing privacy of the
1638 headers between the gras components.
1639 - New! Add a timer mechanism, not unlike cron(8) and at(1).
1640 - Bugfix: gras_os_time was delirious in RL.
1641 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
1643 - Reenable GRAS now that it works.
1645 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
1647 SimGrid (2.90) unstable; urgency=low
1649 Alpha 1 on the path to SimGrid 3
1651 * It is a long time since the last release of SimGrid. I'm sorry about
1652 that but as I had told you, I was rewriting a lot of things. I apologize
1653 to those who had been reporting bugs to me and that I had not answered.
1654 If your bug is still in the new version, please tell me. Here is a
1655 summary of the main changes.
1657 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
1658 lead by Martin Quinson. As a consequence SimGrid gains a lot in
1659 portability, speed, and a lot more but you'll figure it out later.
1660 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
1661 I wanted to release the new MSG as soon as possible and I have
1662 broken GRAS, which is the reason why, for now, only MSG is fully
1663 functional. A laconic description of these projects is available
1664 in the documentation.
1666 * REVOLUTION 2: I have removed SG and I am now using a new simulation
1667 kernel optimized for our needs (called SURF but only the developers
1668 should use it). Hence, MSG is now roughly 30 times faster and I think
1669 that by rewriting a little bit MSG, I could event speed it up a little
1670 bit more. Beside the gain in speed, it is also much easier to encode a
1671 new platform model with SURF than it was with SG. More to come...
1673 * REVOLUTION 3: I have tried to change a little as possible the API of
1674 MSG but a few things really had to disappear. The main differences
1675 with the previous version are :
1676 1) no more m_links_t and the corresponding functions. Platforms are
1677 directly read from a XML description and cannot be hard-coded
1678 anymore. The same format is used for application deployment
1679 description. The new format is described in the documentation.
1680 Have a look in tools/platform_generation. There is a tiny script
1681 that converts from the old platform format to the new one. Concerning
1682 the application deployment format, parsing the old one is tricky.
1683 I think most of you should however be able to convert your files. If
1684 it is really an issue, I can write a C code that does the conversion.
1686 2) the toolbox tbx does not exist anymore. We now have a library
1687 with much more data-structures but without the hash-tables (we have
1688 dictionaries that are much faster).
1690 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
1692 *****************************************************************************
1693 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
1694 * don't feel like converting the oldies. (Mt) *
1695 *****************************************************************************
1698 Version 2.90: "the long awaited one"
1699 - Finished rewriting and debugging MSG. Rewrote the documentation.
1700 - disable GRAS for now since it needs to be ported to the newest SG
1703 - Finish the port to windows (using mingw32 for cross-compile)
1706 - Main loop and datastructures of SURF. A cpu resource object is
1707 functional. Surf can thus be used to create cpu's with variable
1708 performance on which you can execute some actions.
1710 2004-11-15 Martin Quinson
1711 - Port to ARM. Simply added the alignment and size descriptions. Should
1712 work, but the ARM machines are so slow that I didn't had the opportunity
1713 to 'make check' over there yet.
1715 2004-11-15 Arnaud Legrand
1716 - Trace manager now written. It uses a heap structure and is therefore
1717 expected to be efficient. It may however be speeded up (particularly
1718 when many events occur at the same date) by using red and black
1719 trees. One day maybe...
1720 - Max-min linear system solver written. It uses a sparse matrix
1721 structure taking advantage of its expected use. Most operations are
1722 O(1) and free/calloc are called as few as possible. The computation of
1723 the minimum could however be improved by using a red and black tree
1726 2004-11-03 Arnaud Legrand
1727 - Rename every gras_* function that was in xbt/ to its xbt_
1729 - Add a heap and a doubly-linked list to xbt
1730 - Added a dichotomy to the dictionaries. make check works as well before
1731 so I assume that the patch is correct. I do not know however if things
1732 run effectively faster than before now. :)
1734 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
1735 SimGrid, and the version number is bumped to 2.x
1737 2004-10-29 Martin Quinson
1738 - Introduction of the remote errors.
1739 They are the result of a RMI/RPC on the remote machine.
1740 ErrCodes being scalar values, you can't get the host on which those
1741 errors did happen. Extending the error mechanism as in Gnome is possible.
1742 No idea yet whether it is a good idea.
1744 2004-10-28 Martin Quinson
1745 - Interface revolution: the Starred Structure Eradication.
1746 I used to do typedef struct {} toto_t; and then handle *toto_t.
1747 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
1748 - ???_t is a valid type (builded with typedef)
1749 - s_toto_t is a structure (access to fields with .)
1750 - s_toto is a structure needing 'struct' keyword to be used
1751 - e_toto_t is an enum
1752 - toto_t is an 'object' (struct*)
1754 typedef struct s_toto {} s_toto_t, *toto_t;
1755 typedef enum {} e_toto_t;
1756 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
1757 s_toto_t) is private.
1759 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
1760 so that it can set the variable to NULL. It was so for dicts and sets,
1761 it changed for dynars.
1763 - Fix a bunch of memleaks in dict_remove
1764 - Fix a bug in sg/server_socket opening: it failed all the time.
1766 2004-10-07 Martin Quinson
1767 - Speed up dynar lookup operation a bit.
1769 gras_dynar_get is dead.
1771 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
1772 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
1773 (which gives you the address of the stored data).
1775 gras_dynar_get_as is an helpful macro which allows you to retrieve a
1776 copy of the data using an affectation to do the job and not a memcpy.
1778 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
1779 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
1781 It does not really speedup the dynar test because they are
1782 setting elements all the time (and look them seldom). But the dict does
1783 far more lookup than setting.
1785 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
1787 2004-10-05 Martin Quinson
1788 - Allow to (en/dis)able the cycle detection at run time.
1790 Whether we should check for cycle or not is now a property of each
1791 datatype. When you think there may be some cycle, use datadesc_cycle_set.
1792 datadesc_cycle_unset allow to remove this property when previously set.
1794 Note that the cycle detection is off by default since it impacts the
1795 performance. Watch the data you feed GRAS with ;)
1797 This property is hereditary. Any element embedded in a structure having it
1798 set have it set for the time of this data exchange.
1800 You should set it both on sender and receiver side. If you don't set it on
1801 sender side, it will enter an endless loop. If you forget on receiver
1802 side, the cycles won't be recreated after communication.
1804 - Header reorganization.
1805 Kill gras_private.h, each submodule must load the headers it needs.
1807 2004-10-04 Martin Quinson
1808 - Interface revolution: do not try to survive to malloc failure.
1810 Now, gras_malloc and friends call gras_abort() on failure.
1811 As a conclusion, malloc_error is not a valid error anymore, and all
1812 functions for which it was the only gras_error_t return value are
1813 changed. They now return void, or there result directly.
1814 This simplify the API a lot.
1816 2004-09-29 Martin Quinson
1817 - Re-enable raw sockets.
1818 Created by gras_socket_{client,server}_ext;
1819 Used with gras_raw_{send,recv}
1822 It should allow to kill the last bits of gras first version soon.
1824 This is not completely satisfactory yet (duplicate code with
1825 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
1828 - Simplify transport plugin (internal) interface by not passing any
1829 argument to _server and _client, but embedding them in the socket
1832 2004-09-28 Martin Quinson
1833 - Finish the port to AIX.
1834 autoconf was my problem (segfault within the malloc replacement
1835 function. No idea why)
1837 2004-09-16 Martin Quinson
1838 - Fix some size_t madness on 64bit architectures.
1840 2004-09-08 Martin Quinson
1841 - Reduce the number of system headers loaded, overload some more system
1842 calls (such as malloc to cast the result of the system one, and work
1844 - Fix and reintroduce the config support
1846 2004-09-07 Martin Quinson
1847 - Source code reorganization to allow Arnaud to surf all over there.
1848 - Allow to document the logging categories.
1849 - Remove all uppercase from logging categories and useless cleanup in names.
1851 2004-08-18 Martin Quinson
1852 Version 0.6.2 (protocol not changed; API changed)
1853 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
1854 gras_error_t), and NULL when not found. Functions expecting a msgtype
1855 as argument (msg_wait; msg_send) deal with NULL argument by providing a
1856 hopefully usefull message.
1857 - Portability to prehistoric sparcs again
1859 2004-08-17 Martin Quinson
1860 Version 0.6.1 (protocol not changed; ABI not changed)
1861 - prealloc some buffers to speed things up
1863 2004-08-11 Martin Quinson
1864 Version 0.6 (protocol not changed; ABI expended)
1865 - The parsing macro can deal with the references, provided that you add
1866 the relevant annotations (using GRAS_ANNOTE(size,field_name))
1868 2004-08-09 Martin Quinson
1869 Version 0.5 (protocol not changed; ABI changed)
1870 - Allow to off turn the cycle detection code in data exchange at
1871 compilation time. It should be at run time, but I'm short of time (and
1872 the config stuff is still broken). That way, we keep dict out of the
1873 critical path, which is good because the performance is poor:
1874 - search not dichotomial yet
1875 - dynar give no way to access their content and memcpy everytime
1876 - In composed data description (struct, ref and so on), stop foolness of
1877 keeping the subtype's ID, but store the type itself. This keeps sets out
1878 of the critical path, which is good since they rely on dynar and
1879 dictionnaries. The only loose of that is that we cannot detect the
1880 redeclaration of a structure/union with another content (but I'm not sure
1881 the code detected well this error before anyway). We still can detect
1882 the redefinition discrepancy for the other types.
1883 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
1884 it breaks the code because of type-punning used all over the place).
1885 This breaks on all non-gcc architectures (for now).
1887 All those changes (plus the buffer of last time) allow me to gain 2 order
1888 of magnitude on cruel tests consisting of 800000 array of integers on two
1889 level of a hierarchical structure (200 secondes -> 4 secondes)
1892 - the selector of reference must now return the type it points to, not
1893 the ID of this type.
1895 2004-08-06 Martin Quinson
1896 Version 0.4 (protocol changed; ABI not changed)
1897 - Allow to pass --gras-log argument to processes in simulation mode. Really.
1898 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
1899 - Implement a buffer transport, and use it by default (it relies on tcp in
1900 real life and on sg in simulation).
1901 That's a bit hackish since I had a new field to the structure to store
1902 its data without interfering with the subtype ones. Inheritance
1903 is tricky in C. And that's a kind of reverse inheritance with one class
1904 derivating two classes. Or maybe a game with java interfaces. Anyway,
1905 that's damn hard in C (at least).
1906 Moreover, I got tired while trying to ensure plugin separation and
1907 genericity in SG mode. MSG wants me to do weird things, so let's go for
1908 cruel hacks (temporarily of course ;).
1909 See comment in transport_private.h:71
1910 - do not include all the _interface headers in private but in the files
1911 which really need them (to cut the compilation time when they are
1914 2004-07-26 Martin Quinson
1915 Version 0.3 (protocol not changed; ABI changed)
1916 - Major overhault of the datadesc interface to simplify it:
1917 - shorted the function names:
1918 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
1919 - add a trivial way to push/pop integers into the cbps without malloc.
1920 This allows to make really generic sub_type description, which simply
1921 pop their size of the stack.
1922 - add a function gras_datadesc_ref_pop_arr() which does what users want
1923 most of the time: Declare a dynamic array (which pops its size of the
1924 stack) and declare a reference to it. Poor name, but anyway.
1925 - kill the post-send callback, add a post-receive one
1927 2004-07-23 Martin Quinson
1928 Version 0.2 (protocol changed; ABI changed)
1929 - add some testing for cpbs in the test cases, and fix some more bugs.
1930 This invalidate again the little64 data file, since I cannot regenerate
1932 - remove an awfull optimization in the logging stuff, allowing me to:
1933 - understand it again
1934 - learn gcc how to check that the argument match the provided format
1935 - fix all errors revealed by gcc after that
1936 - internal keys of dict are not \0 terminated. Deal with it properly in
1937 loggings instead of segfaulting when the user want to see the logs :-/
1939 2004-07-22 Martin Quinson
1940 - Fix some stupid bug preventing cbps (callback postit) from working
1942 2004-07-21 Martin Quinson
1943 - Some documentation cleanups
1944 - remove the useless last argument of msgtype_declare
1945 - rename the Virtu functions to fit into the 'os' namespace
1946 - move headers src/include -> src/include/gras/ and stop fooling with
1947 gras -> . symbolic link
1948 - make distcheck is now successful
1950 2004-07-19 Martin Quinson
1952 - Build shared library also
1953 - Install html doc to the right location
1954 - stop removing maintainer files in make clean
1955 - build tests only on make check
1957 2004-07-13 Martin Quinson
1959 - No major issue in previous version => change versionning schema
1960 - Re-enable little64 convertion test now that Abdou kindly regenerated the
1961 corresponding dataset.
1963 2004-07-11 Martin Quinson
1965 - Get it working with any kind of structure (we can compute the padding
1966 bytes remotely for all the architectures I have access to)
1967 - Implement the structure parsing macro (still not quite robust/complete)
1968 - Improvement to the remote testing toysuite
1970 2004-07-10 Martin Quinson
1971 [autoconf mechanism]
1972 - get ride of a bunch of deprecated macros
1973 - actually run the test for two-compliment, not only compile it :-/
1974 - test whether the structures get packed (and bail out if yes. Damn.
1975 Alignment is a serious matter)
1976 - test whether the structures get compacted (but respecting the alignment
1977 constraints of each types)
1978 - test whether the array fields of structures can straddle alignment boundaries
1980 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
1981 (took me 2 hours to find that bug, looking at the wrong place)
1982 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
1983 before sending/receiving and are used to compute the offsets of fields
1984 - Given that padding size depend even on compiler options, keep track of
1985 alignment and aligned_size only for the current architecture. Not a big
1986 deal since we send structure fields one after the other (seems
1988 - Add the datastructure used for IEEE paper by the PBIO guys to the test
1989 program, let it work on linux/gcc/little32. portability todo.
1991 2004-07-08 Martin Quinson
1992 - import and improve remote compilation support from FAST
1993 - make sure make check works on half a dozen of machines out there
1995 2004-07-07 Martin Quinson
1996 Let's say it's version 0.0.3 ;)
1997 - Implement conversions (yuhu!)
1998 - Let it work on solaris (beside conversion, of course)
1999 - Stupid me, using rand() to generate the conversion datatests in not wise.
2001 2004-07-06 Martin Quinson
2002 - Let make dist work, since I'm gonna need it to compile on remote hosts
2003 - Let Tests/datadesc_usage write the architecture on which the file was
2004 generated as first byte.
2005 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
2006 architecture descriptions.
2007 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
2008 on those architectures.
2009 - Optimization: send/recv array of scalar in one shoot
2011 2004-07-05 Martin Quinson
2012 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
2014 - Plug a whole bunch of memleaks
2015 - each process now have to call gras_{init,exit}. One day, their log
2016 settings will be separated
2017 - Continue the code factorisation between SG, RL and common in Transport.
2019 2004-07-04 Martin Quinson
2021 - Redistribution between SG and RL.
2022 We wanna have to accept in SG, so move accepted related parts of RL in
2023 the common part. (more precisely, the dynar of all known sockets is no
2024 more a static in transport.c, but part of the process_data)
2026 [gras_stub_generator]
2027 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
2029 2004-07-03 Martin Quinson
2030 - Create a new log channel tbx containing dict, set, log, dynar (to shut
2031 them all up in one shot)
2033 - Fix the ugly case of reference to dynamic array.
2034 - New (semi-public) function gras_datadesc_size to allow the messaging
2035 layer to malloc the needed space for the buffer.
2037 - gras_socket_close now expect the socket to close (and not its address to
2038 put NULL in it after it). This is because the socket passed to handlers
2039 is one of their argument (=> not writable).
2041 - propagate the interface cleanup from last week in datadesc, ie remove a
2042 superfluous level of indirection. User pass adress of variable
2043 containing data (both when sending and receiving), and not of a variable
2044 being a pointer to the data. Let's say that I like it better ;)
2045 The price for that is constructs like "int msg=*(int*)payload" in
2046 handlers, but it's a fine price, IMHO.
2048 - Let it work in RL (yuhu)
2050 2004-06-21 Martin Quinson
2052 - porting SG plugin and SG select to new standards (works almost).
2053 - plug memleaks and fix bugs around.
2056 - cleanup the prototype of data recv and force users to specify when they
2057 want to handle references to objects. Test case working even for cycles.
2058 - plug memleaks. Valgrind is perfectly ok with this.
2060 2004-06-12 Martin Quinson
2062 - cleanup the separation between plugin and main code in plugin creation
2064 2004-06-11 Martin Quinson
2066 - Reput hook for raw sockets, needed for BW experiments
2067 - kill a few lines of dead code
2068 [Data description] Interface cleanup
2069 - gras_datadesc_by_name returns the searched type or NULL.
2070 That way, no variable is needed to use a type desc once, which makes
2072 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
2073 two parameters were strings (field name, type name), leading to
2075 [Dicos] Interface cleanup
2076 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
2077 This is consistant with the dynar API.
2079 2004-04-21 Martin Quinson
2081 - Porting to new standards.
2083 - interface cleanup.
2084 There is no bag anymore, no need to take extra provision to mask the
2085 pointers behind "ID".
2086 Better splitup of functions between files create/exchange/convert.
2087 This is still a bit artificial since convert and receive are so
2088 interleaved, but anyway.
2090 - add a queued message list to procdata (the ones not matching criteria
2092 - factorize some more code between SG and RL wrt procdata
2094 - use gras_exit in example to track memleaks
2095 - get rid of gs_example now that GS is properly integrated into gras
2096 - update run_test to integrate the lastest tests (datadesc)
2098 - rename WARNINGn macros to WARNn since it prooved error-prone
2100 2004-04-19 Martin Quinson
2102 - register init/exit functions within gras module mechanism
2103 - send/receive function.
2104 Convertion is not implemented, but short-cutted if not needed.
2105 struct/array elements are sent one by one (instead of block-wise), but
2106 nobody really cares (yet). Get a prototype before optimizing.
2107 - tests (using a file socket) for DD send/receive on:
2108 - base types: int, float
2109 - array: fixed size, string (ie ref to dynamic string)
2110 - structure: homogeneous, heterogeneous
2111 - chained list, graph with cycle
2112 Believe it or not, valgrind is not too unhappy with the results. The
2113 cycle happily segfaults, but the others are ok. And I'm sick of pointers
2117 - Bugfix when using a filename explicitely (instead of '-')
2119 2004-04-09 Martin Quinson
2121 - factorize more code between RL and SG in socket creation
2122 - Complete the implementation and tests of:
2124 o file (only in RL, and mainly for debugging)
2126 I lost 3 days to design a portable address resolver, and then decided
2127 that the prototype mainly have to run on my box.
2128 Addressing portability too early may be like optimizing too early :-/
2130 - use gras_init in the Tests instead of the crappy parse_log_opt
2131 (the latter function is removed)
2132 [Conditional execution]
2133 - New functions: gras_if_RL/gras_if_SG (basic support for this)
2134 [Code reorganisation]
2135 - Get rid of libgrasutils.a since it makes more trouble than it solves.
2136 Build examples against the RL library, since there is no way to disable
2137 its creation for now.
2139 For information, the beginning of coding on GRAS was back in june
2140 2003. I guess that every line has been rewritten at least twice since