1 SimGrid (3.7) unstable; urgency=low
3 -- `LC_ALL=C date` Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
5 SimGrid (3.6.1) unstable; urgency=low
7 The "Oops, we broke Macs too" release
10 * Fixed contextes detection so that raw ones are used when possible
11 * On Mac, do not use Posix Ucontextes with gcc v4.[1-5] since this
12 leads to a strange error, with user code segfaulting sometimes when
13 the generated code is not perfectly aligned (which is not
14 controlable from the user side, depends on the amount of code)
17 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
19 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
21 SimGrid (3.6) stable; urgency=medium
23 The Summer Release, also known as the "OMG! They Killed Kenny!" version
26 * Bindings now constitute their own package, separated from the main one.
27 Rationale: reduce our maintainance nightmare by reducing the module coupling
28 They will soon be released on their own on gforge.
30 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
31 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
33 GRAS: It is not considered as stable anymore, but experimental. Sorry.
34 * It's not quite deprecated for now because we have no replacement,
35 but it may soon become the case.
38 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
39 * Fortran: New user-level cache variable to store the rank of the running
40 process. This improves performance by an order of magnitude.
41 * C: New coccinelle script to automatically locate and modifiy global and
42 local static variables.
43 * Improved SMPI network model with a sender-side gap to account for multiple
47 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
48 only say if a communication is finished, no matter whether it succeeded or
49 failed. You can call MSG_comm_get_status() to know the status of a finished
51 * New function MSG_task_dsend() to send a task and detach it. When a
52 communication is detached, you are never notified of its success or failure
53 and the memory is released automatically once it is finished. This function
54 is useful when you don't care about the end nor the success of a
56 * Change the prototypes of action replay. Sorry for inconvenience,
57 but this is really more efficient this way (and to adapt your code,
58 you just have to fix the initialization, that shouldn't be too long)
59 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
60 ever managed to do anything useful with it.
61 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
62 takes a dynar of communications. It returns immediately and gives the
63 index of a finished communication (if any).
64 * New example: a basic implementation of the Chord P2P algorithm.
67 * New model for multi-core CPUs. You can now use the core attribute to
68 precise the number of cores of a host. This is a basic model. Every
69 process running on the host receives at most the power provided in
70 the DTD (throughput<=power). Total throughput of process cannot exceed
72 * New peer tag. This peer tag creates a tiny AS comprising a host and a
73 router linked by an up-link and a down-link (possibly asymmetrical).
74 This kind of pattern allows to easily build last-mile model style platforms.
75 Aggregating such patterns in a rule-based AS is thus the technique of
76 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
77 * New model for Vivaldi routing. We transformed the Vivaldi network model
78 into a Vivaldi routing model (based on the rule-based model). This allows to
79 combine Vivaldi based latencies with last-mile platforms.
82 * Introduce a new context factory "raw", highly inspirated from the
83 ucontext factory, but using manually crafted functions in assembly to
84 do the work in an efficient manner.
85 * Allow to change the used context factory at run time, not only at
86 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
87 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
88 contextes at runtime (only with raw contexts or ucontexts).
89 * Completely rewrote this module to allow parallel execution of user
90 processes. Use --cfg=contexts/nthreads:N to execute user processes
91 with N parallel threads (the default is 1, meaning no parallelism).
92 * Allow to decide dynamically between sequential and parallel modes.
93 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
94 processes in parallel only when their number is greater than or equal to P
96 * Added a check for NaN of IEEE754 infinite in the double entries of
100 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
101 won't output the state of processes when interrupted with Ctrl-C
102 * Add a new function xbt_dynar_to_array that transforms a dynar into a
103 NULL-terminated array. This may solve backward compatibility issues
104 due to the change to return type of SD_simulate. See also:
105 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
106 * Add new macros with variable number of arguments.
107 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
108 - in xbt/asserts.h: xbt_assert
109 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
110 - in xbt/ex.h: THROWF and RETHROWF.
111 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
113 * Change xbt_die() to accept a format string with arguments, just like printf.
114 * New data structure: xbt_lib_t, like a dict but more general and with better
118 * New configuration options
119 Options triva/categorized and triva/uncategorized can be used to generate
120 graph configuration files for Triva visualization tool.
121 * Configuration option tracing/platform is renamed to tracing/categorized
122 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
123 * New TRACE_user_link_variable interface:
124 User provides the name of the link and the tracing variable to attach to it
125 * the declaration of tracing categories must be done after the environment
127 * simpler tracing interface, just one way to declare categories
128 TRACE_category or TRACE_category_with_color, it is up to you
129 * links in the trace file are again identified by their names
130 * trace contains the full platform hierarchy exactly as declared using the ASes
131 * Options tracing/msg/[task|process]:1 groups the process by hosts
132 for both cases, tasks and processes must have names that are unique during the simulation
133 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
134 * The experimental option tracing/msg/volume is deprecated
135 its functionality may be reincorporated if needed
137 The tracing generates a trace file with unordered timestamped events,
138 because of the way the core simulator (surf) works. A script available
139 at the tools directory (fix-paje-trace.sh) can be used to put the events
140 in order. We have changed the tracing so it can generate ordered timestamped
141 events in the final trace, but depending on the simulator (and how much time
142 is simulated) that can lead to a huge memory utilization. It is desactivated
143 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
146 * Define a SIMGRID_VERSION macro in simgrid_config.h.
147 - We are trying hard to keep the API stable, but it may happen that
148 some things change (we're a research project after all, not a
149 nuclear plant operating system). If such things should happen, you
150 could rely on that macro to adapt.
151 - current value: 30600 for 3.06.00, aka 3.6
152 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
153 a number that can be compared with SIMGRID_VERSION.
154 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
155 assertions and verbose/debug logging events are disabled at compile time.
157 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
159 SimGrid (3.5) stable; urgency=medium
162 * New feature to any SimGrid-based simulator: Model-Checking
163 Check SIN#1 for more details.
166 * New Model SMPI (three-interval linear regression for correction factors)
167 See RR-7426, available at http://hal.inria.fr/inria-00527150
168 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
169 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
170 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
171 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
172 * See also src/smpi/README
177 - Tracing API changes: TRACE_start and TRACE_end should not be called
178 by user-code. They are automatically called by simulators created
179 with SimDAG, MSG and SMPI if the toolkit is compiled with
180 tracing_enabled=ON. Categories declaration and utilization remain the
181 same for MSG and SimDag.
182 - A function was added to the tracing API to declare categories with
184 - TRACE_category_with_color (char *category, char *color)
185 where color must be in the following format
186 "%f %f %f", red, green, blue
187 and red, green, blue are float values in the interval [0, 1]
188 - User can specify NULL as color parameter, or continue calling
190 On that case, the tracing system will define random colors
191 - The following command-line options are supported:
192 --cfg=tracing/filename:msg.trace
193 --cfg=tracing:1 (activate tracing, needed to use others)
194 --cfg=tracing/platform:1 (categorized resource use)
195 --cfg=tracing/uncategorized:1 (uncategorized resource use)
196 --cfg=tracing/msg/task:1 (task creation)
197 --cfg=tracing/msg/process:1 (process creation, migration)
198 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
199 --cfg=tracing/smpi:1 (SMPI interface tracing)
200 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
201 - examples of examples/msg/tracing updated
203 - DAXLoader and DOTLoader functions can generate tasks with categories
204 - A new function to attribute a category to SD tasks:
205 TRACE_sd_set_task_category (SD_task_t task, char *category)
206 * Tracing the MPI interface implemented by SMPI
207 - Collective operations are traced with states
208 - Point-to-Point operations are traced with states/links
209 - Tracing activated by a parameter "-trace filename" passed
210 to smpirun during execution (considering that simgrid
211 is compiled with tracing enabled)
212 - To run the simulation with gdb, the simulator
213 accepts --cfg=tracing/smpi:1 to trace SMPI
214 - tesh files to check if smpi tracing is ok
215 - See examples/smpi/NAS/DT-trace
216 * GTNetS tracing re-worked
217 - adaptation to the tracing system of GTNets to cope
218 with modifications regarding the fullduplex mode
219 - new tesh files to check if gtnets tracing is ok
222 * Asynchronous communications through the functions:
223 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
224 * New function: MSG_load_platform_script()
225 to make possible using a lua script instead of XML files to set up platforms
226 * New function: MSG_set_function
227 to associate functions to processes, used when bypassing the parser
228 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
230 Platforms: Add some more examples in examples/platforms
231 * Grid'5000: see www.grid5000.fr
232 * *_30000_hosts.xml: various huge files [mainly scalability testing]
235 * Change the XML format. This is a very important modification. SimGrid
236 3.5 introduces a new hierarchical format based on the notion of
237 Autonomous Systems. Compatibility with old format is ensured
238 through the perl script provided in the install bin directory
239 bin/simgrid_update_xml.
240 It is now possible to build platforms with specific routing
241 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
242 connect several platforms together. We will try to provide soon
243 set of realistic platforms exploiting these properties (have a
244 look at examples/platforms/ for the moment).
245 * Take the opportunity of the XML format change to be a good XML citizen:
246 rename link:ctn to link_ctn and similar changes (also dealed with by
248 * Add a new routing scheme (rule-based) using regular expressions. It
249 enables to have an extremely low memory footprint when the
250 underlying routing is simple and can be compactly described. You
251 need to have libpcre4-dev (perl regular expressions) installed if
252 you want to use this routing scheme.
253 * Revive the cluster TAG and allow to easily and efficiently (both in
254 term of memory and speed) connect clusters together. Have a look
255 at teshsuite/simdag/platforms/ to see how this can be done. With
256 this tag, you can create clusters with thousands of tasks at no
257 cost (have a look at examples/platforms/).
258 Note: clusters are implemented as ASes, so there is no need for an
259 enclosing AS tag if you have only one cluster in your platform.
260 * Add new generic functions in the public interface that allows the user
261 to call SURF 'create_resource' methods from your code (same
262 functionality as the XML bypass mechanism but with a much lighter
264 * Add a new model (enabled through command line --cfg=network/model:SMPI)
265 that uses a piecewise linear approximation to produce better
266 results when exchanging small messages.
267 * Add a new parameter to handle correctly full duplex link and account
268 for interferences between uplink and downlink communications
269 (activate with --cfg=fullduplex:1).
272 * Rename the SD_READY (all dependencies are satisfied and task is
273 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
274 dependencies are satisfied) state.
275 This prevents a confusion between the notion of "ready to schedule"
276 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
277 simulated" (SD_RUNNABLE) used by the simulation kernel.
278 * Change the way a task is considered as ready. Instead of removing
279 dependencies when a task is done, a counter is decreased. This way,
280 it is always possible to reach ancestors thanks to the
281 SD_taks_get_parents function (even after the end of the simulation.)
282 * Change the return type of SD_Simulate from (SD_task_t*) into
283 xbt_dynar_t. This function was in handling a dynar internally and
284 converted it into a NULL terminated array for historical reasons.
285 * New function SD_dotload(char*) to load a DAG described in dot
286 format. This loader and the corresponding examples require the
287 installation of the graphviz library.
288 * Fix a bug in the management of tasks of size 0 in the surf network
289 models. This problem was only visible with SIMDAG and you should
290 thus disregard results produced with earlier versions if you
291 relied on this feature (some tasks were blocked because of this).
292 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
293 even though your applications were doing only point-to-point
294 communications and sequential computations. Now you can really use any
295 model you want (of course, if you create real parallel tasks, which are
296 not implemented in most models beside ptaskL07, this will abort).
297 * Add an example that schedules a DAX on an heterogeneous platform
298 using a Min-Min strategy.
299 * New function SD_workstation_get_current_task() that returns the kind
300 of task currently running on a workstation in the sequential access
302 * Raise some warnings when unexecuted tasks remains at the end of the
303 simulation. This is usually caused by cycles in the DAG.
306 * New function: SIMIX_process_set_function() called by MSG_set_function
307 * Change the underlying waiting queue in semaphores so that a process
308 can wait on several of them simultaneously (as in waitany).
309 * Fix the way to handle tokens in semaphores so that all access patterns
310 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
311 * kill the dirty pimple SIMIX_message_sizes_output()
312 Please use (proper) visualization instead
315 * New data container: setset (set of sets of elements)
316 * New module: mmalloc (mapped malloc, allowing to have several
317 independent segments of malloc)
318 * New function: xbt_dict_cursor_set_data()
319 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
320 * New function: xbt_dynar_is_empty()
321 * New function: xbt_fifo_get_last_item()
322 * Fix xbt_dynar_shrink(): use the right element size.
323 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
324 uninitialized areas during expand.
325 * Fix semaphores: previous implementation was severely broken.
326 * Use library init/fini functions for our initialization.
327 - you can use logs and other feature as soon as you want in your
328 code (even before the xbt_init / MSG_init)
329 - xbt_exit is now a no-op and produce a warning when used.
332 * Port GRAS to new SIMIX mechanisms. This allows gras users to
333 benefit from the latest improvement to the simulation kernel.
334 * Kill measurement sockets for now. If you rely on them, sorry. This
335 release is not for you. This feature will be reintroduced in the
336 future, but we cannot delay the release any further.
337 * New function: gras_msgtype_get_name().
338 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
339 * Fix (at last) the pmm example: it should not randomly fail anymore.
341 Build chain: bug fixes and overall polishing
342 * Cmake is now stable enough. Hence, we killed the autotools.
343 * Port to windows ( TM :)
344 * Fix the 'make install' target.
345 No need to use 'make install-simgrid' anymore
346 * Introduce a 'make dist' target compiling a *source* archive
347 'make package' compiles a binary archive
348 * Compile java files only on need
349 * Add --cd and --setenv command line options to tesh
350 * Out of source builds are not fully supported yet, but we are close
351 * Enable supernovae and optimization flags by default for our users
354 * Add layer to set up environment directly from lua, without XML.
355 * The effect of gras_stub_generator can be achieved through
356 lua too (check examples/gras/console/ping_generator.lua)
358 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
360 SimGrid (3.4.1) stable; urgency=low
362 The "Polishing easter eggs is probably a good idea" release.
363 This is a bug fixes release only.
367 * Fix a bug preventing the tasks from begin garbage collected.
370 * Fix a bug occuring when a host involved in a communication fails.
371 This was not detected properly by the other peer involved in the
372 communication. Now, it's reported as a network error.
375 * Warn the user about loop dependencies in data flow of DAX files
376 * Obey the control-flow dependencies of DAX files
379 * Add option "enable_smpi" allowing to not compile SMPI.
380 Probably useful for the (Mac) users experiencing a build error here
381 * Improve the detection of lua5.1 and ruby1.8
383 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
385 SimGrid (3.4) stable; urgency=low
387 The "Easter in Cargese" release. Also known as (major changes):
389 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
390 ~> bindings were greatly improved
391 ~> new tracing infrastructure for better visualization introduced
393 * the "Welcome to configury modernity" release.
394 ~> we switched from autotools to cmake, and improved our cdash
397 A more detailled list of changes follow (full detail in svn log).
399 Java Bindings: Various Cleanups
400 * (install java-gcj-compat-dev on debian-like to use them)
401 * Remove put/get: no need to export deprecated interface in Java
402 Use send/receive instead.
403 * Cleanup the examples and add a README per directory
404 * Remove example autoDestination (that's the only way to go now)
405 * Remove example explicitDestination (was a plain copy of basic)
406 * Make JniException a runtime exception, so that there is no need to
407 declare the fact that you may encounter such a beast. I guess that
408 nobody will ever want to survive such error.
409 * Create specific errors for each MSG case of failure:
410 host failure, transfer failure, timeout, task cancelled
411 * Cleanup the exceptions that may get thrown by each function
412 * Other internal cleanups in Java bindings. Performance still bad :/
413 Ruby and Lua Bindings: create them
414 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
415 * That's new and great, you should try them out.
416 Same functionalities than Java bindings, only even less polished
418 * Kill the useless "rate" argument of SD_task_get_execution_time()
419 Everyone used to provide -1 as a value, it was not used, and the
420 semantic of a possible use wasn't even clear.
421 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
422 either as comm costs or compute costs to mean that there is no
423 such thing for that specific task.
424 * Add a SD_task_set_name() function
425 * Fix SD_task_unschedule() on typed tasks
426 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
427 * In DAX loader, accept useless 'level' attributes to <job> since
428 LIGO DAGs have them (seem to be to ease graphical representation).
430 * Add an example masterslave_mailbox.c using send/receive and not
431 the deprecated put/get interface.
432 * Kill the MSG_paje_output() function. It's a noop since 2 years.
433 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
435 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
436 (declare MSG_USE_DEPRECATED to still have the old name)
437 * Add a MSG_task_set_data() function
438 * About trace replay (see examples/msg/actions):
440 - Allow to work with splitted trace files for each process
441 Give the specific trace file as argument of each process,
442 and call MSG_action_trace_run(NULL)
443 You can still have one merged file for all processes.
444 - Fix implementation of collective operations
445 * Allow task_execute() on 0-sized tasks (closes #10063)
447 * This is the first release of SimGrid where SMPI is not considered
448 beta anymore (even if some corners should still be improved)
449 * Port over the new SIMIX_network submodule (internal refactoring)
450 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
451 * Implement more missing elements of the standard:
453 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
455 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
456 MPI_Scan() MPI_Get_processor_name()
457 - Added implementation of missing case for Alltoall (warning: it's
458 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
459 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
460 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
461 SMPI_MPI_Allgatherv()
463 - MPI_Waitsome() was broken
464 - Allow relative includes in smpicc
465 - Command line cfg argument 'reference_speed' was ignored...
466 - Some functions did not properly lead to auto-benching of user code
467 - smpicc passes -O2 by default (just like openmpi one)
469 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
470 * Bug fixes about timeouts during communications
471 * add SIMIX_message_sizes_output() as a pimple to write to file the
472 amount of messages per size. Use gnuplot to get histogram.
473 Pimple because that's the only user-visible function of simix,
474 defined directly in xbt.h (irk, sorry)
476 - Add a SIMIX_sem_get_capacity() function
477 - Fix interactions with processe resume/suspende
478 - release_forever() was stupidly broken
479 - Fix SIMIX_display_process_status() for processes in a semaphore
480 - Make SIMIX_sem_block_onto() user-visible
481 * Refactoring context stuff:
482 - Use pseudo-OOP for better modularity
483 - reimplement SIMIX_process_kill() without process_schedule() so
484 that the latter can take as invariant that it is called from
486 - Merge context_start into context_new for sake of simplicity
488 * Add a Vivaldi network model, coded live during SUD'10 ;)
489 * Rename configuration variables to start a hierarchy:
490 o cpu_model -> cpu/model
491 o network_model -> network/model
492 o workstation_model -> workstation/model
493 * New configuration variables:
494 o network/bandwidth_factor: correction to bandwith
495 o network/latency_factor: correction to latency
496 o netwotk/weight_S: correction to the weight of competing streams
497 * Add a long description to the models, that users can see with such
498 argument on the command line: --cfg=cpu/model:help
499 * --help-models display the long description of all known models
501 * config: add the ability to set a default value after registration
502 Does not override any previously set value (e.g. from cmd line)
503 * dict: allow to have integer key and data.
504 When so, you need to use the following functions
505 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
506 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
507 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
508 In contrary to regular dicts, the key is not malloced before copy.
509 Mixing scalar and regular elements in the same dict is not tested
511 * Allow to use xbt_dynar_shrink() to expend the dynar instead
512 Tracing for Visualization:
513 * SimGrid is now instrumented in order to generate a trace file for
514 visualization analysis: to use it, need to compile SimGrid with the
515 "tracing" option enabled, and instrument the program using SimGrid with
516 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
517 (among other functions).
518 * The instrumentation only traces the platform utilization for now
519 * Documentation to use the tracing functions and how to analyze the
520 traces with the Triva tool is written.
521 * More information about: SimGrid FAQ (in the section Tracing Simulations
524 * We moved to cmake as default build system. Autotools support will
525 be dropped soon. Check the FAQ for more info about how to use it.
526 * Greatly improved our cdash/ctest interactions
527 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
528 * Added memory checking tests with valgrind; lot of memleak fixing.
529 This may be the first release of simgrid with so few memory issues
530 * Added code coverage tests.
531 Our coverage is still improvable, but at least we see it on cdash.
533 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
535 SimGrid (3.3.4) stable; urgency=low
537 The "Desktop Grid needs love too" release (also called Xmas release).
540 * Major speedup in the maxmin system solving by using lazy evaluation
541 Instead of solving completely the maxmin system at each iteration,
542 only invalidate (and recompute) the modified parts.
543 This new feature is enabled in default models but you can try to
544 turn it on with "--cfg:maxmin-selective-update=1" for other models.
545 * Cas01 IMproved as default CPU model
546 This CPU model is the same Cas01 model, but it uses the
547 maxmin-selective-update flag and a heap structure to manage
548 actions on SURF kernel.
549 It reduces the complexity to find the next action to finish and,
550 consequently, it's faster than the old Cas01.
551 This is the new default CPU model (Cas01).
552 * Rename the old Cas01 model to Cas01_fullupdate
553 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
554 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
555 * CpuTI (CPU Trace Integration)
556 A new CPU model whose objective is simulate faster when using
557 availability trace files.
558 Instead of using a full featured, over engineered maxmin system for
559 CPU modeling, this model does the pre-integration of traces files
560 to calculate the amount of CPU power available, and so, executes
561 faster than the old CPU models.
562 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
563 * Use LV08 as default network model since it gives better accuracy
564 for small messages and shouldn't change things for big ones.
565 Use --cfg=network_model:CM02 to get the previous behavior.
568 ******************************************
569 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
570 ******************************************
571 * The new CPU model may changes simulations!
572 The point is that events occurring at the exact same timestamp
573 are not scheduled in the same order with the old and new
574 version. This may be enough to completely change the execution
575 of simulations in some cases.
576 * The new network model will change simulations!
577 This new model is more realistic than the previous one, so you
578 should consider redoing your old experiments with this model.
579 Sorry for the inconvenience.
582 * Introduce the supernovae compilation mode
583 When compiled that way, the whole SimGrid (or almost) is put in a
584 single compilation unit and compiled in one shoot.
585 This is to help gcc which has difficulties to inline stuff from one
587 The speedup seem to be above 15%, althrough more tests are needed on
588 amd64 to confirm that gain.
591 * Port of MSG's mailbox on top of SIMIX network
592 The put/get mechanism was greatly simplified on the way.
595 * New SIMIX network module. Provides:
596 - Mailbox: rendez-vous mecanism to find with who you want to speak
597 - Synchronous send/recv: easier and hopefully faster since the
598 logic is handled in the maestro process directly now
599 - Asynchronous send/recv: you dreamt of it? It's here now
600 Too bad that nobody cared enough to propagate the change to MSG.
601 * Add semaphores as SIMIX synchronization mechanism.
604 * new function SD_daxload(char*) to load a DAX file
605 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
606 * Introduce typed tasks. Specify its kind and cost at creation.
607 At scheduling, just give where it should be placed, and the cost
608 for each involved resource is automatically computed.
609 Existing constructors so far (more to come of course):
610 - SD_task_create_comm_e2e() for end-to-end communication
611 - SD_task_create_comp_seq() for sequential computation
612 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
613 * new function SD_task_dump() for debuging display
614 * new function SD_task_dotty(task,FILE*) writing to file the info
615 about the task in dotty format
616 * SD_task_dependency_exists() can now cope with having one of its
617 arguments NULL. If so, it tests whether the other argument has any
619 * Add getters on list of preceding/following tasks:
620 SD_task_get_parents(task) and SD_task_get_children(task)
621 * Add getters on amount of workstations and list:
622 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
623 * Add getter on task kind: SD_task_get_kind(task)
624 * Update the start_time and finish_time of tasks on completion/failure
625 * Bugfix: Remove task from state swags when destroyed
628 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
631 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
632 dynar with one separate thread per value of the dynar.
633 * Change the prototype of xbt_thread_create(), sorry.
634 Added a boolean parameter indicating whether we want to join this
635 thread (used in SG only for now)
636 * Implement xbt_thread_join and xbt_thread_yield in SG also.
639 * GTNetS wrappers should now be usable again (and betterly tested too)
640 * Fix a major regression from 3.2 where the timeout provided to
641 MSG_task_put_with_timeout() was used as absolute time before which
642 the comm should be done.
643 * Start to fix the <cluster> tag.
644 - Internal links should be good now (beside of the loopback, which
645 use the private link instead)
646 - paths to the external world is still rather broken
647 - the <route:multi> tag is just broken. Actually that's brain-dead.
648 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
649 to make it less stupid
650 ** Check your platform with teshsuite/simdag/platforms/flatifier **
651 * Fix a source-level compatibility glitch from 3.2: after defining
652 MSG_USE_DEPRECATED, you can use the old name
653 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
654 * Allow to compile from the SVN with automake 1.11
655 * Fix some problems when using the "start_time" tag in deployment XMLs.
656 * Fix #8569: XBT/synchro.h has redundant declarations
657 * Fix #8563: MSG return values and exceptions
658 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
659 * Integrate patch #8636: Obey DESTDIR when installing documentation.
660 Thanks to Robson Peixoto.
661 * Fix a vicious bug in dictionaries inducing that some elements were
662 not freed on xbt_dict_free()
664 Portability report of this version:
665 * Main portability targets:
666 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
668 - mac leopard on i386
669 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
670 but nothing critical.
671 * Other platforms: windows, AIX and others were not tested for this release
673 Timing report of this version:
674 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
675 scenario parameters). From 8h to a few seconds in desktop grid settings.
676 * Supernovae brings about 25% speedup on i386.
678 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
680 SimGrid (3.3.3) stable; urgency=low
682 The "Need for Speed" release.
684 The timings done to validate the 3.3.2 were faulty.
685 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
687 The problem was a conversion from a manually handled vector to
688 xbt_dynar_t on the critical path.
689 xbt_dynar_foreach calls functions, inducing stack management crap.
691 We inlined these functions and xbt_dynar_foreach is now breath taking.
692 We also inlined xbt_swag_belong on the way.
694 Here are some approximate speedup measurements (on master/slaves
695 simulations lasting between 10s and 20s each):
696 3.3.1 -> 3.3.2: about same performance
697 3.3.2 -> 3.3.3: 40% speedup
698 3.3.1 -> 3.3.3: 40% speedup
699 3.3.1 with inline patch -> 3.3.3: 30% speedup
701 Our reading is that the refactoring which occurred in 3.3.2 made us
702 suffer much more from the xbt_dynar_foreach low performance, but
703 once we solved this, this refactoring proved to be very performance
704 effective. From the 40% speedup, somehow, 10% are due to the
705 inlining and 30% to the refactoring.
707 That's a pitty that gcc cannot inline functions placed in other files
708 alone. We have to choose between:
709 - break the encapsulation (by putting private data structures and
710 accessors in headers files to help gcc)
711 - live with low performance
712 - switch to a decent compiler such as icc (not quite possible).
714 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
716 SimGrid (3.3.2) stable; urgency=low
718 The "Simplicity does not preceed complexity, but follows it" release.
720 The main contributors of this release were (lexical order):
721 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
724 * Extract the routing logic into its own object.
725 (was dupplicated in network.c and workstation_LV07.c;
726 Allows to implement other ways of storing that info)
727 => kill now useless network_card concept
728 - Use dynar to represent routes (instead of void** + int*)
729 - kill link_set (use surf_network_model->resource_set instead)
730 - Add a command-line option to choose the routing schema to use
731 - Add three new models:
732 * Floyd (shortest path computed at initialization)
733 * Dijikstra (shortest path recomputed all the time)
734 * Cached Dijikstra (shortest path computed on need)
735 All these models where contributed by Silas De Munck, and are
736 described in his ICCS09 paper.
738 * Simplify model declaration
739 (less redirections, less function to write when defining a model)
740 - Factorize stuff between models:
743 surf_model_resource_set(model)
744 surf_model_resource_by_name(model, name)
745 - Unify the types of models in s_surf_model_t (using an union)
746 - Embeed fields of common_public directly into s_surf_model_t
747 - Rename model methods:
748 action_free ~> action_unref
749 action_change_state ~> action_state_set
750 action_get_state ~> action_state_get
751 - Change model methods into functions :
752 (model)->common_public->action_use ~> surf_action_ref
754 * Implement a generic resource; use it as ancestor to specific ones
755 (allows to kill duplicated code in models)
756 Drawback: timer command don't need no name nor properties;
757 workstation_CLM03 don't need no properties
758 (but I guess we can live with those few bytes wasted)
760 * Improve the action object model
761 - implement a constructor avoiding dupplicated code about field
762 initialization in generic_action part.
764 * Kill the SDP model: it has an external dependency, is deprecated
765 in flavor of modern lmm models, and didn't compile since a while
768 * Relocation of the context module from XBT to SIMIX.
769 (the context were decoupled from the simix processes, duplicating a lot of code)
770 => a lot of code was factorized
771 - less overhead is introduced during scheduling
772 - simpler API for the context factory
773 - the logic for process creation,destruction and manipulation was simplified
774 * Simplification of the s_smx_process_t data structure.
775 => accesing the simix level data associated to a process is faster now,
776 and the code is a lot more readable.
779 * Implement some more MPI primitives:
780 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
781 -implementation: Bcast: flat or 2-ary tree (default),
784 Allreduce: Reduce then Bcast
785 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
786 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
787 Alltoallv: flat tree, like ompi
789 * Add support for optimized collectives (Bcast is now binomial by default)
790 * Port smpirun and smpicc to OS X
793 * Kill SD_link_get_properties: hard to maintain and makes very little sense
794 Shout out if you used it.
797 * Display the list of still queued messages in SG mode when existing
801 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
802 * Add xbt_graph_node_get_outedges() [Silas De Munck]
803 * Add xbt_str_from_file(FILE*)
804 * Add xbt_dict_get_key achieving a linear reverse search
805 * Remove the context module
807 Portability report of this version:
808 * Main portability targets:
809 - Linux(debian)/x86/context
810 - Linux(debian)/x86/pthreads
811 - Linux(debian)/amd64/context
812 - Linux(debian)/amd64/pthreads
813 On these, we still have the eratic breakages of gras/pmm and
814 amok/saturate_sg reported in previous version. We still think
815 that the tests are the cause of the fault, not the tested code.
817 - Mac OSX Leopard/x86/context
818 Still false negative in tesh autotesting.
819 Smpi still fails, but this time because readlink does not accept -f
820 Everything seems to work properly beside of that.
823 - AIX version 5.3 (only tested contexts this time)
824 Smpi still fails there because mktemp is not installed.
825 Everything seems to work properly beside of that.
827 I managed to compile it for the first time, but several breakages.
828 Won't delay the release for this exotic platform.
830 * Windows: it's still lagging behind. If you want to help, please
833 Timing report of this version:
834 This version seem to be more than 5% faster than 3.3.1 (on linux
835 64bits with contextes). The gain is less than expected, we are
836 investigating this for next release.
838 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
840 SimGrid (3.3.1) stable; urgency=low
843 * Implement a --cfg-help to show existing configuration variables
844 * Build chain do not require doxygen in maintainer mode
847 * fix a bug on struct sizeof computation, which prevented the
848 exchange of arrays of structs in some conditions
849 - added a regression test about this in datadesc_usage
850 * Allow the exchange of 0-long dynamic vectors.
851 - for that, use -1 as indicator of dynamic size instead of 0
852 - This implied to change any size from unsigned long to long,
853 reducing a bit communication abilities, but I guess that with
854 64bits being quite common, this is more than enough.
855 - This also induce a protocol change, thus bumping network protocol
856 version from 0 to 1 (if we have external users, we have to get
857 clean on that point too ;)
858 - added two regression tests about this in datadesc_usage
859 * Be more verbose when propagating local exceptions
860 This helps debugging.
861 * Display the status of simulated processes when receiving SIGINT in
865 * Allow to control the simulation from a trace file.
866 New functions MSG_action_register() and MSG_action_trace_run()
867 The first one allows to associate a function execution to each
868 kind of action while the second one parses a trace file and
869 triggers the corresponding actions within the system.
870 For now, only a toy example is provided in examples/msg/actions
871 * Add an exemple of process migration in examples/msg/migration
872 * Fix a bug in task exchange which broke MSG_task_get_sender()
873 Add a teshsuite regression test for that.
874 [Bug: if MSG_task_get_sender() is called after sender exit,
876 * Fix a bug which prevented suspend/resume to work properly
877 * Display the status of simulated processes when receiving SIGINT
878 This fixes a regression of v3.3. due to the introduction of SIMIX
879 * Bug fixing in failure management:
880 - trace could not start by a failure at time 0
881 - failure during communications were not working
884 * Add SIMIX_process_set_name() to change the name of the current
885 process in the log messages.
886 * Store smx_hosts in a dict since we only retrieve them by name
887 * Move the configuration infrastructure to surf
890 * Move the configuration infrastructure to surf
893 * Massive internal cleanups:
894 - Store internal structures on processes instead of hosts (allows
895 to have more than one process per host, in addition of being more
897 - Cleanup the initialization/finalization process
898 - Kill a whole bunch of unneeded synchronization:
899 processes run in exclusive manner within the simulator
900 - Move queues from global tables to process data fields
902 - now accept -platform and -hostfile arguments
903 - Pass the right rank value to processes according to the hostfile
904 * Compile the examples by default, and use them as regression tests
905 * Implement MPI_Wtime()
906 * Change the reference speed to a command line option
909 * TCP_gamma can now be specified as command line option using
910 --cfg=TCP_gamma:10000000.0
911 * Change the --surf-path cmd line option into --cfg=path:
914 * Also include strbuff from xbt.h public header
915 * xbt_ex_display(): do not free the exception after displaying
916 This allows to do more with the given exception afterward.
917 Users should call xbt_ex_free() themselves.
921 Portability report of this version:
922 * Main portability targets:
923 - Linux(debian)/x86/context
924 - Linux(debian)/x86/pthreads
925 - Linux(debian)/amd64/context
926 - Linux(debian)/amd64/pthreads
927 These targets fail about 1/10 of times on gras/pmm, but we believe
928 that this is because of the test, not because of simgrid.
929 amok/saturate_sg fails even more rarely, and the test may not be
932 - Mac OSX Leopard/x86/context
933 The test suite still spits tons of errors because some obscure
934 force prevents us from removing the temporary directories
935 arguing that they still contain some metadata I've never heard of.
936 Smpi fails because seq is not installed.
937 Everything seems to work properly beside of that.
940 - AIX version 5.3 (both contexts and pthread)
941 Smpi still fails there because mktemp is not installed.
942 XML inclusions seems rosty on AIX.
944 * Windows: it's still lagging behind. If you want to help, please
947 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
949 SimGrid (3.3) stable; urgency=high
953 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
956 * Introduce the SIMIX module: factorize code between MSG and GRAS.
959 Until now, GRAS were using MSG as an interface to SURF. It was
960 quite difficult because both interface have several differences
961 (MSG channels vs GRAS sockets were the most notable point).
963 This also opens the gate to SMPI (which should occur soon) and speed
964 up simulations by to 40% (even if it were not the main goal).
966 **************************************
967 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
968 **************************************
969 The point is that events occuring at the exact same timestamp are
970 not scheduled in the same order with the old and new version. This
971 may be enough to completely change the execution of simulations in
972 some cases. Sorry for the inconvenience.
974 * Cleanup and upgrade the XML format to push further scalability
975 issues (check http://hal.inria.fr/inria-00256883/ for more info)
977 * Improve the testing infrastructure with tesh. Now a very large part of
978 the code is tested not only by being run but also by checking that the
979 output match an expected output [Mt].
981 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
982 is really less memory-demanding, which should allow you to use
983 larger files in SimGrid [AL].
985 * Inform valgrind about our contextes, so that it becomes usable
986 with the default (and more effecient) version of SimGrid
987 [contributed by Sékou Diakite, many thanks]
990 * Introduce a listener thread in charge of receiving incomming
991 messages from the network. It allows to overlap communication and
992 computation but most notably, it removes some stupid deadlocks due
993 to the fact that so far, a process could not send and receive at
994 the same time. This made most non trivial communication schema
996 * Convert the PIDs from long int to int to match the MSG ones (and
998 * New function: gras_agent_spawn() to launch a new process on
999 current host. Only working in simulation for now. [Mt]
1000 * New function: gras_os_hostport() returning a constant form (ie,
1001 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
1004 * Make the backtrace of exceptions more human readable [Mt]
1005 * New module: xbt/str [Mt]
1006 a ton of string utility functions (split, join, printf to a newly
1007 allocated buffer, trim, etc)
1008 * New module: xbt/hash [Mt]
1009 SHA1 hashing algorithm (more to come if needed)
1010 * New module: xbt/synchro [Mt]
1011 synchronization tools (mutex and conditions) working the same way
1012 in simulation and in real life (mainly useful for GRAS, but not
1014 * New module: xbt/queue [Mt]
1015 classical producer/consumer synchronization scheme
1016 * xbt_dynar_new_sync() creates a synchronized dynar. All access
1017 (using the classical functions will get serialized) [Mt]
1018 * Make dictionary internal table dynamic. No need to specify its size
1019 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
1021 * Make sure the log channels are organized as a tree under windows
1022 (because of ANSI C compatibility issue, any channel were child of
1023 root directly) [Mt].
1026 * Cleaned many thing in surf and fixed a few bugs [AL].
1027 * Add a nice command line configuration mechanism to compose models [AL].
1028 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
1029 the previous one (KCCFLN05). It relies on something that looks like
1030 a max-min sharing mechanism but cannot be written as such. A new solver
1031 was thus designed [AL].
1032 * Add a new solver to lmm. Based on Lagrange optimization and
1033 gradient-based descent, it enables to efficiently maximise systems s.a
1035 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
1037 This solver enables to propose two new network models for TCP Reno and
1038 TCP Vegas based on Low's work. These models still need to be fully
1039 tested though [Pedro Velho].
1042 * Bug fix in SD_simulate. Now the time bound given as argument is
1044 * Use the new parallel task model (ptask_L07) as default.
1045 * Use the SURF command line configuration mechanism.
1046 * 0-size tasks (for synchronization) should now work.
1048 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
1050 SimGrid (3.2) stable; urgency=high
1054 We still experience issues on this platform, but we believe that at
1055 least MSG is usable.
1057 GRAS API BREAKAGE (for simplification purpose, sorry):
1058 * the gras_msgtype_by_name is not used anymore. Instead of
1059 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
1060 you can write (and must)
1061 gras_msg_send(toserver, "request", &request);
1062 - If you still want to pass a gras_msgtype_t to the function (to cache
1063 the type and avoid the lookup time), use the gras_msg_send_() variant.
1064 - Impacted functions:
1065 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
1066 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
1067 * The callbacks are now expected to return 0 when everything went well
1068 (just like the main() function)
1070 GRAS new features and improvements:
1071 * New module mecanism where user code can use per process globals [Mt]
1072 This is similar to gras_userdata_*() functions, but for libraries. It
1073 factorize some code developped over and over in the examples and AMOK.
1074 It has still to be documented and used (only amok/peermanagement is
1076 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
1077 loss when they were small enough to fit into the buffer and sent quickly
1078 enough so that they can all get received in one shoot.
1079 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
1080 if not found. Use the *_or_null() variant for the old semantic.
1081 * In gras_msg_handle, do not discard messages without callback.
1082 They are probably messages to be explicitly awaited later (ie, proofs of
1083 mis-synchronization in userland since they are sent before being awaited)
1084 No big deal usually.
1085 * gras_socket_meas_send/recv: semantic changed!
1086 The numerical arguments used to be (1) the total amount of data to send
1087 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
1088 messages. This was need for the fool willing to send more than MAXINT
1089 bytes on quite fat pipes.
1092 * Do really rename the hostmanagement module to peermanagement. [Mt]
1093 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
1094 but this is rather new and this was documented in the module
1095 documentation (poor excuses, I admit)
1096 * Bandwidth measurement semantic changed! This follows the changes to
1097 gras_socket_meas_send/recv explained above.
1100 * A sequential mode has been added to the workstations. When a workstation
1101 is in sequential mode, it can execute only one task, and the other tasks
1102 are waiting in a FIFO. [Christophe Thiery]
1105 * The KCCFLN05 workstation model now handles parallel tasks. It is the
1106 model for SIMDAG. [Christophe Thiery]
1107 * Bug fix in the maxmin solver: Some values were close to 0 instead of
1108 equal to 0, which caused some bad behaviors in
1109 saturated_constraint_set_update. I now use a threshold mechanism like in
1113 * When running manually src/testall, you select specific units [Mt]
1114 testall is the result of our cunit mecanism, and should replace all
1115 the scripty thingy around since bash don't run easily on billware.
1117 * A mallocator system has been added. [Christophe Thiery]
1118 Mallocators allow you to recycle your unused objects instead of freeing them
1119 and allocating new ones.
1121 Documentation update:
1122 * FAQ reworking + New FAQs:
1123 - "Valgrind spits tons of errors!" [Mt]
1124 - "How to repport bugs" [Mt]
1125 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
1126 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
1127 - Communication time measurement within MSG [AL]
1128 - I experience weird communication times when I change the latency [AL]
1129 * GRAS tutorial [Mt]
1131 - an introduction to the framework and to the used communication model
1132 - an initiatic tour introducing the most proheminent features:
1134 . Lesson 0: Installing GRAS
1135 . Lesson 1: Setting up your own project
1136 o Part 2: Message passing
1137 . Lesson 2: Exchanging simple messages
1138 . Lesson 3: Passing arguments to the processes (in SG)
1139 . Lesson 4: Attaching callbacks to messages
1140 . Lesson 5: Using globals in processes
1141 . Lesson 6: Logging informations properly
1142 . Lesson 7: Using internal timers
1143 . Lesson 8: Handling errors through exceptions
1144 . Lesson 9: Exchanging simple data
1145 . Lesson 10: Remote Procedure Calling (RPC)
1146 . Lesson 11: Explicitely waiting for messages
1147 . Recapping of message passing features in GRAS
1148 - A HOWTO section containing:
1149 o HOWTO design a GRAS application
1150 More are due, of course. They will come latter. In the meanwhile, you can
1151 check the examples which are still here.
1153 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
1155 SimGrid (3.1) stable; urgency=high
1159 There was a stack corruption somewhere, visible only when optimizing
1160 with these versions. [Vince]
1163 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
1164 module that enabled to play with Directed Acyclic Graphs. It is built
1165 directly on top of SURF and provides an API rather close to the old
1166 SG. Some old codes using SG are currently under rewrite to check that
1167 all needful functions are provided. [Christophe Thiery]
1170 * Complete rewrite of the KCCFLN05 workstation model. It is now an
1171 extension of the classical CLM03 model that gracefully handles
1172 failures. This is now the default model for MSG and GRAS. It doesn't
1173 handle parallel tasks yet though. [AL]
1174 * Bug fix: Weights were not correctly set in the network part.
1175 WARNING: This may have resulted in incorrect results with simulations
1176 where there are more than one flow on a given link. [AL]
1179 * After a (long ?) discussion on simgrid-devel, we have decided that the
1180 convention we had on units was stupid. That is why it has been decided
1181 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
1182 WARNING : This means that all previous platform files will not work as
1183 such with this version! A warning is issued to ask users to update
1185 A conversion script can be found in the contrib module of the CVS, under
1186 the name contrib/platform_generation/surfxml_update.pl [MQ]
1189 * Bug fix: Processes were started in reverse order, wrt deployment file.
1190 WARNING: if your code relies on this bug, please fix it. [AL]
1191 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
1192 being executed on two different locations. [AL]
1193 * Bug fix: Failures are now better supported thanks to Derrick's tests
1194 (there was many failure situations I hadn't thought of and that weren't
1195 correctly handled). [AL]
1196 * New function: MSG_host_is_avail indicates you whether a given m_host_t
1200 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
1201 Exception occurring on server-side are propagated back to client (!).
1203 API CHANGE: the callback changed their prototype. Change:
1204 int my_handler(gras_socket_t expeditor, void *payload_data) {
1206 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
1207 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
1209 * New! function: gras_msg_handleall to deal with all messages arriving
1210 within a given period.
1211 * New! function: gras_socket_server_range to get a server socket in a
1212 range of port numbers (ease to avoid port number conflicts) [MQ]
1213 * New! gras processes display their backtrace when they get a SIGUSR1
1214 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
1215 Sweet to debug RL processes [MQ]
1219 - Do not force experiment sizes to be expressed in kb, or it becomes
1220 impossible to measure the latency this way (needs one byte-long tests)
1221 WARNING: this changes the amok_bw_* function semantic. [MQ]
1222 - Implements the link saturation stuff. [MQ]
1223 * Peer management module:
1224 New! module factorizing code that we wrote over and over [MQ].
1227 * New module: cunit (my jUnit implementation in ansi C) [MQ]
1228 - Test units are placed directly into the library code, they get extracted
1229 automatically and placed into the src/testall binary.
1230 - Convert most of the XBT tests to this system.
1231 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
1232 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
1233 live in the same C code. This required to change a little bit the API
1234 of surfxml parsing but shouldn't be an issue for end-users. [AL]
1235 * New module: sparse graph structure with basic algorithms (this is work
1236 in progress and the API is not considered to be frozen yet). [AL]
1237 * Display more information on backtraces: source line & function names are
1238 now displayed just like valgrind does (rely on addr2line tool) [MQ]
1239 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
1240 * Reworked a little bit some #include statements to load only required
1241 headers. Some user code that relied on SimGrid to include stdlib or
1242 stdio may need to include it by themselves. [AL]
1243 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
1245 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
1246 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
1247 but I guess that almost nobody used those parts. [MQ]
1249 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
1251 SimGrid (3.0.1) stable; urgency=low
1254 * Unfortunately, I had missed 5 misnamed functions:
1255 xbt_fifo_item_t xbt_fifo_newitem(void);
1256 void xbt_fifo_freeitem(xbt_fifo_item_t);
1257 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
1258 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
1259 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
1260 They're now deprecated. Please use their new versions:
1261 xbt_fifo_item_t xbt_fifo_new_item(void);
1262 void xbt_fifo_free_item(xbt_fifo_item_t);
1263 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
1264 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
1265 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
1267 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
1268 * Documentation: xbt_log module unmercifully reworked [MQ]
1269 * Bugfix: there was a problem with the ending of contexts with
1270 the pthread backend. It caused some weird deadlock or behavior
1271 depending on the pthread implementation. [AL]
1272 * Bugfix: get the exceptions raised in the simulator repport where
1273 and why they come from when they are not catched in time [AL, MQ]
1276 * Bugfix: Do repport the error when two non-connected hosts try to
1277 exchange data (Thanks to Flavien for stumbling into this one) [AL]
1280 * Add additionnal checkings on communications. Assert that two
1281 communicating hosts are connected by a set of links... [AL]
1284 * Add additionnal checkings on channel values in communication [AL]
1285 * New: MSG_task_get_source to see on which host a task was generated [HC]
1286 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
1287 the number of tasks waiting to be received on channel and sent
1289 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
1290 waits for the first task coming from a given host.. [AL]
1292 GRAS new functionnalities: [MQ]
1293 * Enhance the parsing macro to allow the size of multidimentional objects
1294 to be given thru annotations.
1295 * New example (and documentation): Matrix Multiplication a la RPC
1296 (as when I was young!) and fix a bunch of bugs found on the way.
1298 GRAS performance improvements: [MQ]
1300 * Reduce the amount of cbps creation/destruction by making it static to
1301 datadesc_send/recv() and using a (newly created) cbps_reset (based on
1304 * Change libdata to a set so that we can search for stuff by ID (and thus
1305 reduce the insane amount of dict lookups)
1308 * Actually implement gras_datadesc_copy() so that we don't have to mimick
1309 RL communication on top of SG since it's so uneffective.
1310 It may also be used for inter-thread communication in RL, one day.
1311 * Use gras_datadesc_copy() to exchange messages on top of SG
1313 - improve message exchange performance on top of SG
1314 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
1315 * Don't exchange on the network the size of the used part of buffer,
1316 instead, specify the possible buffer size to read().
1318 - reduces the amount of read/write calls (one pair per exchange)
1319 - reduces the amount of exchanged data (the size)
1320 - allows to retrieve all arrived data on receiver side, if we don't need
1321 it right now (subsequent read will peek the buffer)
1322 - allows the receiver to proceed with the begining of the stream before
1323 everything is arrived
1324 - make it possible to build an iov transport (using readv/writev)
1326 - take care of the data with non-stable storage (like stacked data),
1328 * If possible, TCP send uses vector I/O (when writev() is here)
1329 - Don't use it for receive since we send data sizes and data on the
1330 same stream, so we wouldn't be able to chain large amount of chunks
1331 before having to flush the stuff to read the size.
1332 * Rework the transport plugin mecanism to simplify it and reduce the
1333 amount of pointer dereferencement when searching for the right function
1336 * I guess that now, we do almost as few system calls as possible while
1337 doing as few data copy as possible.
1339 To improve it further, we could try to send all the sizes first and then
1340 all the data (to use iov on receiving size), but it's only a partial
1341 solution: when you have 2 dimensional data, the sizes of the second
1342 dimension is data of the first dimension, so you need 3 streams.
1344 I'm not sure the potential performance gains justify the coding burden.
1346 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
1348 SimGrid (3.00) stable; urgency=high
1351 * New! Give the possibility to hijack the surf parser and thus bypass
1352 MSG_create_environment and MSG_launch_application. Have a look at
1353 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
1355 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
1357 SimGrid (2.96) unstable; urgency=low
1362 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
1363 This deprecates the xbt_error_t mecanisms.
1364 It modifies (simplifies) all XBT and GRAS API.
1365 MSG API keeps unchanged (exceptions raised by XBT are catched from
1366 within MSG and masked with existing error handling facilities)
1369 * New! Add a FATPIPE model. [AL]
1370 * New! Add a parallel task model. [AL]
1371 * New! Add automatically a loopback interface (in the default
1372 network model) if none was precised.
1375 * Bugfix: MSG_process_resume now works with the current running process.
1377 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
1378 * Modification of MSG_task_get_compute_duration. Once a task has been
1379 processed, the value returned by this function is now equal to 0. [AL]
1380 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
1381 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
1382 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
1383 of a m_task. For now, MSG_task_cancel only works with computation
1385 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
1386 of the processor (in Mflop/s) regardless of the current load on the
1388 * API Change: use proper naming convention for MSG_getClock and
1389 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
1391 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
1392 This function changes the priority of a computation task. This priority
1393 doesn't affect the transfer rate. A priority of 2 will make a task
1394 receive two times more cpu power than the other ones. This function
1395 has been added to suit the needs of Nguyen The Loc and hasn't been that
1396 much tested yet. So if it fails, please report it and send me your code.
1398 * API Change: removed all functions and types that were marked "deprecated"
1399 since many months. Renamed MSG_global_init_args to MSG_global_init.
1401 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
1403 SimGrid (2.95) unstable; urgency=low
1406 * Steal some nice code to GNU pth to fix context detection and usage [AL]
1407 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
1408 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
1411 * Bugfix: Allow absolute paths for platform description files [MQ]
1412 * Bugfix: do free the variables after use. Leads to drastic performance
1414 * Implement max_duration (ie, timeouts) on resources [AL]
1417 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
1419 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
1420 the needed support (timeouts) [AL]
1423 * Implement measurement sockets. You can now get the bandwidth between two
1424 hosts thanks to AMOK (see below). [MQ]
1425 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
1426 dynar over the network (yeah) [MQ]
1427 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
1428 * simple/static token-ring example. [Alexandre Colucci and MQ]
1429 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
1430 in place before [MQ]
1433 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
1434 type parsing. "short" and "long" modifiers were also ignored; other
1435 modifier (such as reference level) are still ignored. [MQ]
1436 * Embeed the buffer size within the buffer itself on SG. [MQ]
1437 That way, send() are atomic and cannot get intermixed anymore (at least
1438 the ones which are less than 100k; bigger messages still have the issue)
1439 * Array size pushed by the field, not by the field type (or each
1440 and every long int will push stuff to the cbps) [MQ]
1441 * use select() to sleep since it allows to portably sleep less than one
1444 GRAS (minor cleanups)
1445 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
1448 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
1449 * type category 'ignored' killed as it was never used and were difficult
1451 * whether a type can cycle or not is now a flag, leaving room for more
1452 flags (as "ignored", if we feel the need one day ;)
1453 * Rename raw sockets to measurement sockets since "raw" has another
1454 meaning in networking community.
1457 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
1458 and offers features not belonging to GRAS but that most applications
1459 need. One day, it may be a set of plugins loadable at runtime.
1460 * New module: bandwidth
1461 bandwidth measurement between arbitrary nodes running this module. [MQ]
1463 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
1465 SimGrid (2.94) unstable; urgency=low
1467 The first beta release of SimGrid 3 !
1471 * Update the main page and the FAQ. Adding references to gforge.
1474 * Add a gras_os_getpid function.
1477 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
1478 * Extend the logs so that they also print PID, hostname, date, ... if
1480 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
1481 and kill the old version which were in testsuite/
1482 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
1486 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
1487 for users. Instead, each programming environment (GRAS, MSG,...) use it
1488 when needed to provide such a feature to users.
1489 Don't shortcut the mecanism or you will also shortcut the virtualization
1490 you need on the simulator.
1494 * Cleanups in configury with regard to compile optimization/warning flags.
1495 Also add -fno-loop-optimize to any powerpc since it's the optimization
1496 killing gcc (< 3.4.0).
1497 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
1498 needed by MSG examples complications
1499 * Borrow configury beautifications from PHP
1502 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
1503 warning (thanks loris for stumbling into this one).
1504 * Bugfix: stop loading private headers (gras_config.h) from the public
1508 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
1509 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
1510 RL would imply a DNS resolver, which is *hard* to do in a portable way
1511 (and therefore delayed).
1512 * Implement a real timer mecanism and use it in timing macros. This allows
1513 to avoid rounding errors and get a 0.000005 sec precision in timing
1514 macros. While I was at it, various cleanups:
1515 - allow to declare more than one timed section per file (fix a stupid bug)
1516 - move some private declaration to the right place
1517 - merge conditional execution and timing macros into emulation module
1518 - document the module
1519 - make sure the module cleanups its mess on gras_exit
1520 * Documentation improvements:
1521 - (new) how to compile applications using GRAS
1522 - (new) emulation support (timing macros)
1524 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
1526 SimGrid (2.93) unstable; urgency=low
1528 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
1531 - Use Paje properly where used. Still to be sanitized properly.
1532 - Portability fix: Add an implementation of the contexts using pthread
1536 - Add xbt_procname(): returns the name of the current process.
1537 Use it to show the current process's name in all logging.
1539 - fix detection of older flex version and the reaction, since we do
1540 depend on modern ones (we use lex_destroy)
1541 - Better separation of SG and RL in the libs: remove all simulation code
1542 from libgras. As a result, this lib is now only 200k when stripped.
1543 Some of the xbt modules may also be duplicated (two sets and such) and
1544 should be cleaned/killed before SG3.
1545 - Insist on using xlC on AIX because of weird problems involving gcc there.
1546 - Cleanup the make remote stuff. This is now done by scripts
1547 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
1548 mainly for our private use, but we're working on changing them to user
1551 - Bugfix: flush the socket on close only if there is some *output*.
1552 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
1554 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
1557 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
1559 SimGrid (2.92) unstable; urgency=low
1561 Alpha 3 on the path to SimGrid 3
1565 - New! First try of benchmarking macros.
1566 - New! First try so that gras_stub_generator generate deployment and
1567 remote compilation helpers.
1569 - Bugfix: Initialization fix in msg_test.
1573 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
1575 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
1577 - API Change: gras_os_sleep to take the amount of seconds as a double.
1578 Accepting an int was error prone since it was the only location where
1579 seconds were coded as such. It leaded to damn rounding errors.
1580 - Bugfix: Hard to belive that timers ever worked before this.
1582 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
1584 SimGrid (2.91) unstable; urgency=low
1586 Alpha 2 on the path to SimGrid 3
1590 - Bug fix in the lmm_solver.
1592 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
1593 through the function MSG_paje_output.
1594 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
1595 - It is possible to bound the rate of a communication in MSG with
1596 MSG_task_put_bounded() (was already in the previous version but I had forgotten
1597 to write it in the changelog).
1598 - Bug fix to let GRAS run on top of MSG until we move it directly on top
1603 - Various cleanups to the autotools stuff
1604 - Begin to move Gras examples to examples/gras/
1605 - Let make distcheck work again (yeah!)
1607 - documentation overhauled using doxygen.
1608 gtk-doc-tools is dead in SimGrid now.
1609 - Automatically extract all existing logging categories, and add the list
1610 to the documentation (long standing one, to say the less)
1612 - Cleanup the known architecture table. Reorder the entries to group what
1613 should be, and use a more consistent naming scheme.
1614 (some of the test dataset are still to be regenerated)
1615 - New! Allow library to register globals on each process just as userdata
1617 This is implemented using a xbt_dict and not a xbt_set, so we loose the
1618 lookup time (for now).
1619 Use it in msg and trp.
1620 This cleans a lot the internals and helps enforcing privacy of the
1621 headers between the gras components.
1622 - New! Add a timer mechanism, not unlike cron(8) and at(1).
1623 - Bugfix: gras_os_time was delirious in RL.
1624 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
1626 - Reenable GRAS now that it works.
1628 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
1630 SimGrid (2.90) unstable; urgency=low
1632 Alpha 1 on the path to SimGrid 3
1634 * It is a long time since the last release of SimGrid. I'm sorry about
1635 that but as I had told you, I was rewriting a lot of things. I apologize
1636 to those who had been reporting bugs to me and that I had not answered.
1637 If your bug is still in the new version, please tell me. Here is a
1638 summary of the main changes.
1640 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
1641 lead by Martin Quinson. As a consequence SimGrid gains a lot in
1642 portability, speed, and a lot more but you'll figure it out later.
1643 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
1644 I wanted to release the new MSG as soon as possible and I have
1645 broken GRAS, which is the reason why, for now, only MSG is fully
1646 functional. A laconic description of these projects is available
1647 in the documentation.
1649 * REVOLUTION 2: I have removed SG and I am now using a new simulation
1650 kernel optimized for our needs (called SURF but only the developers
1651 should use it). Hence, MSG is now roughly 30 times faster and I think
1652 that by rewriting a little bit MSG, I could event speed it up a little
1653 bit more. Beside the gain in speed, it is also much easier to encode a
1654 new platform model with SURF than it was with SG. More to come...
1656 * REVOLUTION 3: I have tried to change a little as possible the API of
1657 MSG but a few things really had to disappear. The main differences
1658 with the previous version are :
1659 1) no more m_links_t and the corresponding functions. Platforms are
1660 directly read from a XML description and cannot be hard-coded
1661 anymore. The same format is used for application deployment
1662 description. The new format is described in the documentation.
1663 Have a look in tools/platform_generation. There is a tiny script
1664 that converts from the old platform format to the new one. Concerning
1665 the application deployment format, parsing the old one is tricky.
1666 I think most of you should however be able to convert your files. If
1667 it is really an issue, I can write a C code that does the conversion.
1669 2) the toolbox tbx does not exist anymore. We now have a library
1670 with much more data-structures but without the hash-tables (we have
1671 dictionaries that are much faster).
1673 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
1675 *****************************************************************************
1676 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
1677 * don't feel like converting the oldies. (Mt) *
1678 *****************************************************************************
1681 Version 2.90: "the long awaited one"
1682 - Finished rewriting and debugging MSG. Rewrote the documentation.
1683 - disable GRAS for now since it needs to be ported to the newest SG
1686 - Finish the port to windows (using mingw32 for cross-compile)
1689 - Main loop and datastructures of SURF. A cpu resource object is
1690 functional. Surf can thus be used to create cpu's with variable
1691 performance on which you can execute some actions.
1693 2004-11-15 Martin Quinson
1694 - Port to ARM. Simply added the alignment and size descriptions. Should
1695 work, but the ARM machines are so slow that I didn't had the opportunity
1696 to 'make check' over there yet.
1698 2004-11-15 Arnaud Legrand
1699 - Trace manager now written. It uses a heap structure and is therefore
1700 expected to be efficient. It may however be speeded up (particularly
1701 when many events occur at the same date) by using red and black
1702 trees. One day maybe...
1703 - Max-min linear system solver written. It uses a sparse matrix
1704 structure taking advantage of its expected use. Most operations are
1705 O(1) and free/calloc are called as few as possible. The computation of
1706 the minimum could however be improved by using a red and black tree
1709 2004-11-03 Arnaud Legrand
1710 - Rename every gras_* function that was in xbt/ to its xbt_
1712 - Add a heap and a doubly-linked list to xbt
1713 - Added a dichotomy to the dictionaries. make check works as well before
1714 so I assume that the patch is correct. I do not know however if things
1715 run effectively faster than before now. :)
1717 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
1718 SimGrid, and the version number is bumped to 2.x
1720 2004-10-29 Martin Quinson
1721 - Introduction of the remote errors.
1722 They are the result of a RMI/RPC on the remote machine.
1723 ErrCodes being scalar values, you can't get the host on which those
1724 errors did happen. Extending the error mechanism as in Gnome is possible.
1725 No idea yet whether it is a good idea.
1727 2004-10-28 Martin Quinson
1728 - Interface revolution: the Starred Structure Eradication.
1729 I used to do typedef struct {} toto_t; and then handle *toto_t.
1730 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
1731 - ???_t is a valid type (builded with typedef)
1732 - s_toto_t is a structure (access to fields with .)
1733 - s_toto is a structure needing 'struct' keyword to be used
1734 - e_toto_t is an enum
1735 - toto_t is an 'object' (struct*)
1737 typedef struct s_toto {} s_toto_t, *toto_t;
1738 typedef enum {} e_toto_t;
1739 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
1740 s_toto_t) is private.
1742 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
1743 so that it can set the variable to NULL. It was so for dicts and sets,
1744 it changed for dynars.
1746 - Fix a bunch of memleaks in dict_remove
1747 - Fix a bug in sg/server_socket opening: it failed all the time.
1749 2004-10-07 Martin Quinson
1750 - Speed up dynar lookup operation a bit.
1752 gras_dynar_get is dead.
1754 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
1755 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
1756 (which gives you the address of the stored data).
1758 gras_dynar_get_as is an helpful macro which allows you to retrieve a
1759 copy of the data using an affectation to do the job and not a memcpy.
1761 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
1762 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
1764 It does not really speedup the dynar test because they are
1765 setting elements all the time (and look them seldom). But the dict does
1766 far more lookup than setting.
1768 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
1770 2004-10-05 Martin Quinson
1771 - Allow to (en/dis)able the cycle detection at run time.
1773 Whether we should check for cycle or not is now a property of each
1774 datatype. When you think there may be some cycle, use datadesc_cycle_set.
1775 datadesc_cycle_unset allow to remove this property when previously set.
1777 Note that the cycle detection is off by default since it impacts the
1778 performance. Watch the data you feed GRAS with ;)
1780 This property is hereditary. Any element embedded in a structure having it
1781 set have it set for the time of this data exchange.
1783 You should set it both on sender and receiver side. If you don't set it on
1784 sender side, it will enter an endless loop. If you forget on receiver
1785 side, the cycles won't be recreated after communication.
1787 - Header reorganization.
1788 Kill gras_private.h, each submodule must load the headers it needs.
1790 2004-10-04 Martin Quinson
1791 - Interface revolution: do not try to survive to malloc failure.
1793 Now, gras_malloc and friends call gras_abort() on failure.
1794 As a conclusion, malloc_error is not a valid error anymore, and all
1795 functions for which it was the only gras_error_t return value are
1796 changed. They now return void, or there result directly.
1797 This simplify the API a lot.
1799 2004-09-29 Martin Quinson
1800 - Re-enable raw sockets.
1801 Created by gras_socket_{client,server}_ext;
1802 Used with gras_raw_{send,recv}
1805 It should allow to kill the last bits of gras first version soon.
1807 This is not completely satisfactory yet (duplicate code with
1808 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
1811 - Simplify transport plugin (internal) interface by not passing any
1812 argument to _server and _client, but embedding them in the socket
1815 2004-09-28 Martin Quinson
1816 - Finish the port to AIX.
1817 autoconf was my problem (segfault within the malloc replacement
1818 function. No idea why)
1820 2004-09-16 Martin Quinson
1821 - Fix some size_t madness on 64bit architectures.
1823 2004-09-08 Martin Quinson
1824 - Reduce the number of system headers loaded, overload some more system
1825 calls (such as malloc to cast the result of the system one, and work
1827 - Fix and reintroduce the config support
1829 2004-09-07 Martin Quinson
1830 - Source code reorganization to allow Arnaud to surf all over there.
1831 - Allow to document the logging categories.
1832 - Remove all uppercase from logging categories and useless cleanup in names.
1834 2004-08-18 Martin Quinson
1835 Version 0.6.2 (protocol not changed; API changed)
1836 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
1837 gras_error_t), and NULL when not found. Functions expecting a msgtype
1838 as argument (msg_wait; msg_send) deal with NULL argument by providing a
1839 hopefully usefull message.
1840 - Portability to prehistoric sparcs again
1842 2004-08-17 Martin Quinson
1843 Version 0.6.1 (protocol not changed; ABI not changed)
1844 - prealloc some buffers to speed things up
1846 2004-08-11 Martin Quinson
1847 Version 0.6 (protocol not changed; ABI expended)
1848 - The parsing macro can deal with the references, provided that you add
1849 the relevant annotations (using GRAS_ANNOTE(size,field_name))
1851 2004-08-09 Martin Quinson
1852 Version 0.5 (protocol not changed; ABI changed)
1853 - Allow to off turn the cycle detection code in data exchange at
1854 compilation time. It should be at run time, but I'm short of time (and
1855 the config stuff is still broken). That way, we keep dict out of the
1856 critical path, which is good because the performance is poor:
1857 - search not dichotomial yet
1858 - dynar give no way to access their content and memcpy everytime
1859 - In composed data description (struct, ref and so on), stop foolness of
1860 keeping the subtype's ID, but store the type itself. This keeps sets out
1861 of the critical path, which is good since they rely on dynar and
1862 dictionnaries. The only loose of that is that we cannot detect the
1863 redeclaration of a structure/union with another content (but I'm not sure
1864 the code detected well this error before anyway). We still can detect
1865 the redefinition discrepancy for the other types.
1866 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
1867 it breaks the code because of type-punning used all over the place).
1868 This breaks on all non-gcc architectures (for now).
1870 All those changes (plus the buffer of last time) allow me to gain 2 order
1871 of magnitude on cruel tests consisting of 800000 array of integers on two
1872 level of a hierarchical structure (200 secondes -> 4 secondes)
1875 - the selector of reference must now return the type it points to, not
1876 the ID of this type.
1878 2004-08-06 Martin Quinson
1879 Version 0.4 (protocol changed; ABI not changed)
1880 - Allow to pass --gras-log argument to processes in simulation mode. Really.
1881 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
1882 - Implement a buffer transport, and use it by default (it relies on tcp in
1883 real life and on sg in simulation).
1884 That's a bit hackish since I had a new field to the structure to store
1885 its data without interfering with the subtype ones. Inheritance
1886 is tricky in C. And that's a kind of reverse inheritance with one class
1887 derivating two classes. Or maybe a game with java interfaces. Anyway,
1888 that's damn hard in C (at least).
1889 Moreover, I got tired while trying to ensure plugin separation and
1890 genericity in SG mode. MSG wants me to do weird things, so let's go for
1891 cruel hacks (temporarily of course ;).
1892 See comment in transport_private.h:71
1893 - do not include all the _interface headers in private but in the files
1894 which really need them (to cut the compilation time when they are
1897 2004-07-26 Martin Quinson
1898 Version 0.3 (protocol not changed; ABI changed)
1899 - Major overhault of the datadesc interface to simplify it:
1900 - shorted the function names:
1901 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
1902 - add a trivial way to push/pop integers into the cbps without malloc.
1903 This allows to make really generic sub_type description, which simply
1904 pop their size of the stack.
1905 - add a function gras_datadesc_ref_pop_arr() which does what users want
1906 most of the time: Declare a dynamic array (which pops its size of the
1907 stack) and declare a reference to it. Poor name, but anyway.
1908 - kill the post-send callback, add a post-receive one
1910 2004-07-23 Martin Quinson
1911 Version 0.2 (protocol changed; ABI changed)
1912 - add some testing for cpbs in the test cases, and fix some more bugs.
1913 This invalidate again the little64 data file, since I cannot regenerate
1915 - remove an awfull optimization in the logging stuff, allowing me to:
1916 - understand it again
1917 - learn gcc how to check that the argument match the provided format
1918 - fix all errors revealed by gcc after that
1919 - internal keys of dict are not \0 terminated. Deal with it properly in
1920 loggings instead of segfaulting when the user want to see the logs :-/
1922 2004-07-22 Martin Quinson
1923 - Fix some stupid bug preventing cbps (callback postit) from working
1925 2004-07-21 Martin Quinson
1926 - Some documentation cleanups
1927 - remove the useless last argument of msgtype_declare
1928 - rename the Virtu functions to fit into the 'os' namespace
1929 - move headers src/include -> src/include/gras/ and stop fooling with
1930 gras -> . symbolic link
1931 - make distcheck is now successful
1933 2004-07-19 Martin Quinson
1935 - Build shared library also
1936 - Install html doc to the right location
1937 - stop removing maintainer files in make clean
1938 - build tests only on make check
1940 2004-07-13 Martin Quinson
1942 - No major issue in previous version => change versionning schema
1943 - Re-enable little64 convertion test now that Abdou kindly regenerated the
1944 corresponding dataset.
1946 2004-07-11 Martin Quinson
1948 - Get it working with any kind of structure (we can compute the padding
1949 bytes remotely for all the architectures I have access to)
1950 - Implement the structure parsing macro (still not quite robust/complete)
1951 - Improvement to the remote testing toysuite
1953 2004-07-10 Martin Quinson
1954 [autoconf mechanism]
1955 - get ride of a bunch of deprecated macros
1956 - actually run the test for two-compliment, not only compile it :-/
1957 - test whether the structures get packed (and bail out if yes. Damn.
1958 Alignment is a serious matter)
1959 - test whether the structures get compacted (but respecting the alignment
1960 constraints of each types)
1961 - test whether the array fields of structures can straddle alignment boundaries
1963 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
1964 (took me 2 hours to find that bug, looking at the wrong place)
1965 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
1966 before sending/receiving and are used to compute the offsets of fields
1967 - Given that padding size depend even on compiler options, keep track of
1968 alignment and aligned_size only for the current architecture. Not a big
1969 deal since we send structure fields one after the other (seems
1971 - Add the datastructure used for IEEE paper by the PBIO guys to the test
1972 program, let it work on linux/gcc/little32. portability todo.
1974 2004-07-08 Martin Quinson
1975 - import and improve remote compilation support from FAST
1976 - make sure make check works on half a dozen of machines out there
1978 2004-07-07 Martin Quinson
1979 Let's say it's version 0.0.3 ;)
1980 - Implement conversions (yuhu!)
1981 - Let it work on solaris (beside conversion, of course)
1982 - Stupid me, using rand() to generate the conversion datatests in not wise.
1984 2004-07-06 Martin Quinson
1985 - Let make dist work, since I'm gonna need it to compile on remote hosts
1986 - Let Tests/datadesc_usage write the architecture on which the file was
1987 generated as first byte.
1988 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
1989 architecture descriptions.
1990 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
1991 on those architectures.
1992 - Optimization: send/recv array of scalar in one shoot
1994 2004-07-05 Martin Quinson
1995 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
1997 - Plug a whole bunch of memleaks
1998 - each process now have to call gras_{init,exit}. One day, their log
1999 settings will be separated
2000 - Continue the code factorisation between SG, RL and common in Transport.
2002 2004-07-04 Martin Quinson
2004 - Redistribution between SG and RL.
2005 We wanna have to accept in SG, so move accepted related parts of RL in
2006 the common part. (more precisely, the dynar of all known sockets is no
2007 more a static in transport.c, but part of the process_data)
2009 [gras_stub_generator]
2010 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
2012 2004-07-03 Martin Quinson
2013 - Create a new log channel tbx containing dict, set, log, dynar (to shut
2014 them all up in one shot)
2016 - Fix the ugly case of reference to dynamic array.
2017 - New (semi-public) function gras_datadesc_size to allow the messaging
2018 layer to malloc the needed space for the buffer.
2020 - gras_socket_close now expect the socket to close (and not its address to
2021 put NULL in it after it). This is because the socket passed to handlers
2022 is one of their argument (=> not writable).
2024 - propagate the interface cleanup from last week in datadesc, ie remove a
2025 superfluous level of indirection. User pass adress of variable
2026 containing data (both when sending and receiving), and not of a variable
2027 being a pointer to the data. Let's say that I like it better ;)
2028 The price for that is constructs like "int msg=*(int*)payload" in
2029 handlers, but it's a fine price, IMHO.
2031 - Let it work in RL (yuhu)
2033 2004-06-21 Martin Quinson
2035 - porting SG plugin and SG select to new standards (works almost).
2036 - plug memleaks and fix bugs around.
2039 - cleanup the prototype of data recv and force users to specify when they
2040 want to handle references to objects. Test case working even for cycles.
2041 - plug memleaks. Valgrind is perfectly ok with this.
2043 2004-06-12 Martin Quinson
2045 - cleanup the separation between plugin and main code in plugin creation
2047 2004-06-11 Martin Quinson
2049 - Reput hook for raw sockets, needed for BW experiments
2050 - kill a few lines of dead code
2051 [Data description] Interface cleanup
2052 - gras_datadesc_by_name returns the searched type or NULL.
2053 That way, no variable is needed to use a type desc once, which makes
2055 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
2056 two parameters were strings (field name, type name), leading to
2058 [Dicos] Interface cleanup
2059 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
2060 This is consistant with the dynar API.
2062 2004-04-21 Martin Quinson
2064 - Porting to new standards.
2066 - interface cleanup.
2067 There is no bag anymore, no need to take extra provision to mask the
2068 pointers behind "ID".
2069 Better splitup of functions between files create/exchange/convert.
2070 This is still a bit artificial since convert and receive are so
2071 interleaved, but anyway.
2073 - add a queued message list to procdata (the ones not matching criteria
2075 - factorize some more code between SG and RL wrt procdata
2077 - use gras_exit in example to track memleaks
2078 - get rid of gs_example now that GS is properly integrated into gras
2079 - update run_test to integrate the lastest tests (datadesc)
2081 - rename WARNINGn macros to WARNn since it prooved error-prone
2083 2004-04-19 Martin Quinson
2085 - register init/exit functions within gras module mechanism
2086 - send/receive function.
2087 Convertion is not implemented, but short-cutted if not needed.
2088 struct/array elements are sent one by one (instead of block-wise), but
2089 nobody really cares (yet). Get a prototype before optimizing.
2090 - tests (using a file socket) for DD send/receive on:
2091 - base types: int, float
2092 - array: fixed size, string (ie ref to dynamic string)
2093 - structure: homogeneous, heterogeneous
2094 - chained list, graph with cycle
2095 Believe it or not, valgrind is not too unhappy with the results. The
2096 cycle happily segfaults, but the others are ok. And I'm sick of pointers
2100 - Bugfix when using a filename explicitely (instead of '-')
2102 2004-04-09 Martin Quinson
2104 - factorize more code between RL and SG in socket creation
2105 - Complete the implementation and tests of:
2107 o file (only in RL, and mainly for debugging)
2109 I lost 3 days to design a portable address resolver, and then decided
2110 that the prototype mainly have to run on my box.
2111 Addressing portability too early may be like optimizing too early :-/
2113 - use gras_init in the Tests instead of the crappy parse_log_opt
2114 (the latter function is removed)
2115 [Conditional execution]
2116 - New functions: gras_if_RL/gras_if_SG (basic support for this)
2117 [Code reorganisation]
2118 - Get rid of libgrasutils.a since it makes more trouble than it solves.
2119 Build examples against the RL library, since there is no way to disable
2120 its creation for now.
2122 For information, the beginning of coding on GRAS was back in june
2123 2003. I guess that every line has been rewritten at least twice since