1 SimGrid (3.8) NOT RELEASED; urgency=low
3 The "SimGrid makes psssshiiiit and jumps into the cloud" release.
6 * Remove option custom_flags. Now use environment variables CFLAGS
10 * Add an experimental interface to manipulate VMs. They are mainly
11 process groups with very few intrinsic semantic, but they should
12 allow you to build the semantic you want easily.
15 * Bug fixes around the resource failures: don't let the processes
16 survive the host they are running onto
19 * New type of typed tasks SD_TASK_COMP_PAR_AMDAHL that represents a
20 parallel task whose initial work is distributed among host according
21 to the Amdahl's law. Such tasks are created with a parameter alpha
22 that corresponds to the non-parallelizable part of the computation.
24 Before calling SD_task_schedulel or SD_task_schedulev, the
25 SD_task_distribute_comp_amdahl function has to be called with the
26 desired number of workstations. The filling of computation_amount and
27 communication_amount (actually empty) structures is then done
29 * New function SD_workstation_dump to display various information
31 -- $date Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
33 SimGrid (3.7.1) stable; urgency=low
36 * Restore the prototype of MSG_process_create_with_environment() to
37 the pre-3.7 situation by removing the kill_time argument.
38 * Add a MSG_process_set_kill_time() function instead.
41 * Fix weird behaviors when dealing with parallel tasks.
44 * Fix compilation when using MSG_USE_DEPRECATED.
45 * Fix some compilation issues on Macs and Windows.
46 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
48 We discovered that the Lua console is broken, but we are missing the
49 manpower to fix it right now. The problem existed in 3.7 too, so we
50 are not blocking the release for that. Sorry if you depended on this
51 feature, any help would be really welcome.
53 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
55 SimGrid (3.7) stable; urgency=low
57 The "spring cleanups (before the next Big Project kicks in)" release.
60 * We can specify the SMPI latency/bandwidth factor with command line
61 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
62 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
63 You can also use the "config tag" from platform file by adding this line
64 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
65 (see "example/platforms/tag_config.xml" to use "config tag").
66 Note that the command line supersedes the platform file configuration.
67 * Change the correction factors used in LMM model, according to
68 the latest experiments described in INRIA RR-7821.
69 Accuracy should be improved this way.
70 * Use the partial invalidation optimization by default for the
71 network too. Should produce the exact same results, only faster.
72 * Major cleanup in surf to merge models and split some optimization
73 mechanisms from the core of the models. As a result you can now
74 specify which model to use (e.g., --cfg=network/model:LV08
75 --cfg=cpu/model:Cas01) and which optimization mode to use
76 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
77 Incompatible combinations should err at initialization. See
78 --help-models for the list of all models and optimization modes.
79 * The CLM03 workstation model was dropped for simplicity because it
80 used the deprecated CM02 network model. Use default instead.
81 * Rename the TCP_gamma configuration option to network/TCP_gamma
82 * Rename the coordinates configuration option to
83 network/coordinates, and document it
84 * Use now crosstraffic keyword instead of the terribly misleading
85 fullduplex keyword. It is activated by default now in the current
86 default model, use --cfg=network/crosstraffic:0 to turn it off.
87 * Ongoing refactoring the model parsing to make XML files optional
88 See include/simgrid/platf.h for details (still to be completed)
91 * Major overhaul of the documentation. Almost instructive now :/
92 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
93 functions and friends. This interface was considered as
94 deprecated since over 2 years, it's time to inform our users that it is.
95 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
96 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
97 use these (crappy) functions in your code.
98 These functions will be removed soon. Stop using them now.
99 * Deprecate MSG_get_host_{table,number}
100 Implement MSG_hosts_as_dynar() instead.
101 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
102 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
105 * Stabilize the parallel execution mode of user contexts
106 * Introduce configuration variables to control parallel execution:
107 - contexts/synchro: Synchronization mode to use when running
108 contexts in parallel (either futex, posix or busy_wait)
109 - contexts/parallel_threshold: Minimal number of user contexts
110 that must be part of a scheduling round to switch to parallel
111 execution mode (raw contexts only)
112 * Fix bugs that prevented to use suspend/resume along with
113 synchronization structures.
114 * Fix bugs in process termination that lead to invalid memory access
115 in very specific conditions.
118 * Introduce a parallel mode for the models (controlled by surf/nthreads
119 configuration item). In our tests, running the models in parallel
120 never lead to any speedups because they are so fast that the gain
121 of computing each model in parallel does not amortizes the
122 synchronization costs, even when ultra fast futexes are used.
123 This is released anyway because YMMV.
126 * Performance boost by using a swag internally to compute the set of
127 tasks that are finished and should constitute the return value of
131 * Enable it by default now that it is considered rather stable.
134 * Documentation of the tracing functions.
135 * Performance gains when tracing categorized/uncategorized resource
136 utilization by avoiding calls to get route when updating resource
137 variables. LMM constraints are being used instead.
138 * API changed to set task categories. Use MSG_task_set_category instead
139 of TRACE_msg_set_task_category, and SD_task_set_category instead
140 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
141 * Bugfix for graphicator, routes not correctly obtained, memory leaks
142 * Examples for link user variables added (see at examples/msg/tracing/)
143 * Deprecated function TRACE_msg_set_process_category completely removed
144 * Trace header updated according to the latest Paje file format
145 * Tracing network lazy updates, no longer obligate users to use full updates
146 * --cfg=tracing/platform:1 also registers power/bandwidth variables
147 * Experimental: let user code declare/set/push/pop application states for hosts
148 * API changed to allow the manual creation of graph configuration files
149 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
152 * Improve the API of Lua MSG bindings, using the Lua spirit.
153 * Each simulated process now lives in its own Lua world (globals are
154 automatically duplicated). It helps writing simulators. Will allow
155 to run Splay programs within SimGrid in the future.
156 * Add a Chord example in Lua, equivalent to the MSG one.
159 * Start the implementation of a solution to express temporal
160 properties, not only local assertions. This is still an
161 experimental work in progress, stay clear from it to be safe.
165 - Add new runtime parameters --help-logs and --help-log-categories
166 to display informations about supported logging parameters and
168 - Old deprecated parameters --{gras,surf,msg.simix,xbt}-log=...
169 don't exists anymore.
170 * Mallocators: allow value NULL for the reset function.
172 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
173 create homogeneous dictionaries, where all the elements share the
174 same free function. Non homogeneous dictionaries will be
175 deprecated in the next release.
176 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
177 - Multi-level dictionaries are deprecated.
179 - new function xbt_dynar_search_or_negative() that is useful when
180 you have less than 2 million elements in your dynar and don't
181 want of the extra complexity of catching exceptions when the
182 element is not found.
184 - Make xbt_os_thread module (for thread portability) public.
185 Documentation is still to come, sorry.
187 - Cleanups and simplifications to make it maintainable again.
188 - Exotic features (such as memalign and valloc) were removed.
189 - The metadata were extended and improved so that the
190 model-checker becomes able to explore and inspect the heaps.
191 - This may induce a performance drop when enable_model-checking is
192 ON in cmake (even if it's not used in the simulation), but it is
193 necessary at this point to get MC working.
195 Turn model-checking OFF if simulation performance matters to you.
196 Not enabling it at runtime is not enough, disable it in cmake.
198 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
200 SimGrid (3.6.2) stable; urgency=low
202 The "Not coding new stuff allows to polish old things" release.
205 * New bindings to the NS3 packet level simulator (experimental)
206 * Use the raw (efficient) execution contexts instead of the sysv
207 (portable) ones when possible.
208 * libpcre is now mandatory in any cases since not using it led to
209 severe performance loss and possibly other issues
210 * Update the XML platforms:
211 - G5K: include the latest machine in Nancy
212 - GridPP and LCG: new platforms
213 * Documentation was partially updated, at least (more to come)
215 Bug fixes, cosmetics and small improvements
216 * Free terminated processes before the end of the simulation to avoid
217 exhausting the memory of users having very dynamic amount of
219 * Bug fix and cosmetics about canceling non-running tasks
220 * Bug fix about the dot loader's issues when using libcgraph
223 * Create an installer for windows with nsis (amd64 and win32)
224 - Add an hello world project to illustrate simgrid project creation.
225 - Embed libpcre into the Simgrid installer to avoid
226 its compilation burden
227 * The raw execution contexts should work on Apple now
228 * Port to Windows 64 bits
229 - Sysv contexts now have an implementation for this arch
230 - GRAS communication features now support this arch
231 * Drop support for borland compiler on windows
232 - this code was not maintained, and we kinda depend on gcc nowadays
233 * Fix portability issues on kfreebsd/gnu: build error about semaphores
234 * Fix portability issue on unstable ubuntu: linker became picky on
237 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
239 SimGrid (3.6.1) stable; urgency=low
241 The "Oops, we broke Macs too" release
244 * Fixed contexts detection so that raw ones are used when possible
245 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
246 leads to a strange error, with user code segfaulting sometimes when
247 the generated code is not perfectly aligned (which is not
248 controllable from the user side, depends on the amount of code)
251 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
253 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
255 SimGrid (3.6) stable; urgency=medium
257 The Summer Release, also known as the "OMG! They Killed Kenny!" version
260 * Bindings now constitute their own package, separated from the main one.
261 Rationale: reduce our maintenance nightmare by reducing the module coupling
262 They will soon be released on their own on gforge.
264 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
265 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
267 GRAS: It is not considered as stable anymore, but experimental. Sorry.
268 * It's not quite deprecated for now because we have no replacement,
269 but it may soon become the case.
272 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
273 * Fortran: New user-level cache variable to store the rank of the running
274 process. This improves performance by an order of magnitude.
275 * C: New coccinelle script to automatically locate and modify global and
276 local static variables.
277 * Improved SMPI network model with a sender-side gap to account for multiple
281 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
282 only say if a communication is finished, no matter whether it succeeded or
283 failed. You can call MSG_comm_get_status() to know the status of a finished
285 * New function MSG_task_dsend() to send a task and detach it. When a
286 communication is detached, you are never notified of its success or failure
287 and the memory is released automatically once it is finished. This function
288 is useful when you don't care about the end nor the success of a
290 * Change the prototypes of action replay. Sorry for inconvenience,
291 but this is really more efficient this way (and to adapt your code,
292 you just have to fix the initialization, that shouldn't be too long)
293 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
294 ever managed to do anything useful with it.
295 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
296 takes a dynar of communications. It returns immediately and gives the
297 index of a finished communication (if any).
298 * New example: a basic implementation of the Chord P2P algorithm.
301 * New model for multi-core CPUs. You can now use the core attribute to
302 precise the number of cores of a host. This is a basic model. Every
303 process running on the host receives at most the power provided in
304 the DTD (throughput<=power). Total throughput of process cannot exceed
306 * New peer tag. This peer tag creates a tiny AS comprising a host and a
307 router linked by an up-link and a down-link (possibly asymmetrical).
308 This kind of pattern allows to easily build last-mile model style platforms.
309 Aggregating such patterns in a rule-based AS is thus the technique of
310 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
311 * New model for Vivaldi routing. We transformed the Vivaldi network model
312 into a Vivaldi routing model (based on the rule-based model). This allows to
313 combine Vivaldi based latencies with last-mile platforms.
316 * Added a check for NaN of IEEE754 infinite in the double entries of
318 * Introduce a new context factory "raw", highly inspirated from the
319 ucontext factory, but using manually crafted functions in assembly to
320 do the work in an efficient manner.
321 * Allow to change the used context factory at run time, not only at
322 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
323 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
324 contexts at runtime (only with raw contexts or ucontexts).
325 * Completely rewrote this module to allow parallel execution of user
326 processes. Use --cfg=contexts/nthreads:N to execute user processes
327 with N parallel threads (the default is 1, meaning no parallelism).
328 * Allow to decide dynamically between sequential and parallel modes.
329 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
330 processes in parallel only when their number is greater than or equal to P
332 * Added a check for NaN of IEEE754 infinite in the double entries of
336 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
337 won't output the state of processes when interrupted with Ctrl-C
338 * Add a new function xbt_dynar_to_array that transforms a dynar into a
339 NULL-terminated array. This may solve backward compatibility issues
340 due to the change to return type of SD_simulate. See also:
341 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
342 * Add new macros with variable number of arguments.
343 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
344 - in xbt/asserts.h: xbt_assert
345 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
346 - in xbt/ex.h: THROWF and RETHROWF.
347 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
349 * Change xbt_die() to accept a format string with arguments, just like printf.
350 * New data structure: xbt_lib_t, like a dict but more general and with better
354 * New configuration options
355 Options triva/categorized and triva/uncategorized can be used to generate
356 graph configuration files for Triva visualization tool.
357 * Configuration option tracing/platform is renamed to tracing/categorized
358 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
359 * New TRACE_user_link_variable interface:
360 User provides the name of the link and the tracing variable to attach to it
361 * the declaration of tracing categories must be done after the environment
363 * simpler tracing interface, just one way to declare categories
364 TRACE_category or TRACE_category_with_color, it is up to you
365 * links in the trace file are again identified by their names
366 * trace contains the full platform hierarchy exactly as declared using the ASes
367 * Options tracing/msg/[task|process]:1 groups the process by hosts
368 for both cases, tasks and processes must have names that are unique during the simulation
369 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
370 * The experimental option tracing/msg/volume is deprecated
371 its functionality may be reincorporated if needed
373 The tracing generates a trace file with unordered timestamped events,
374 because of the way the core simulator (surf) works. A script available
375 at the tools directory (fix-paje-trace.sh) can be used to put the events
376 in order. We have changed the tracing so it can generate ordered timestamped
377 events in the final trace, but depending on the simulator (and how much time
378 is simulated) that can lead to a huge memory utilization. It is deactivated
379 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
382 * Define a SIMGRID_VERSION macro in simgrid_config.h.
383 - We are trying hard to keep the API stable, but it may happen that
384 some things change (we're a research project after all, not a
385 nuclear plant operating system). If such things should happen, you
386 could rely on that macro to adapt.
387 - current value: 30600 for 3.06.00, aka 3.6
388 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
389 a number that can be compared with SIMGRID_VERSION.
390 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
391 assertions and verbose/debug logging events are disabled at compile time.
393 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
395 SimGrid (3.5) stable; urgency=medium
398 * New feature to any SimGrid-based simulator: Model-Checking
399 Check SIN#1 for more details.
402 * New Model SMPI (three-interval linear regression for correction factors)
403 See RR-7426, available at http://hal.inria.fr/inria-00527150
404 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
405 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
406 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
407 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
408 * See also src/smpi/README
413 - Tracing API changes: TRACE_start and TRACE_end should not be called
414 by user-code. They are automatically called by simulators created
415 with SimDAG, MSG and SMPI if the toolkit is compiled with
416 tracing_enabled=ON. Categories declaration and utilization remain the
417 same for MSG and SimDag.
418 - A function was added to the tracing API to declare categories with
420 - TRACE_category_with_color (char *category, char *color)
421 where color must be in the following format
422 "%f %f %f", red, green, blue
423 and red, green, blue are float values in the interval [0, 1]
424 - User can specify NULL as color parameter, or continue calling
426 On that case, the tracing system will define random colors
427 - The following command-line options are supported:
428 --cfg=tracing/filename:msg.trace
429 --cfg=tracing:1 (activate tracing, needed to use others)
430 --cfg=tracing/platform:1 (categorized resource use)
431 --cfg=tracing/uncategorized:1 (uncategorized resource use)
432 --cfg=tracing/msg/task:1 (task creation)
433 --cfg=tracing/msg/process:1 (process creation, migration)
434 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
435 --cfg=tracing/smpi:1 (SMPI interface tracing)
436 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
437 - examples of examples/msg/tracing updated
439 - DAXLoader and DOTLoader functions can generate tasks with categories
440 - A new function to attribute a category to SD tasks:
441 TRACE_sd_set_task_category (SD_task_t task, char *category)
442 * Tracing the MPI interface implemented by SMPI
443 - Collective operations are traced with states
444 - Point-to-Point operations are traced with states/links
445 - Tracing activated by a parameter "-trace filename" passed
446 to smpirun during execution (considering that simgrid
447 is compiled with tracing enabled)
448 - To run the simulation with gdb, the simulator
449 accepts --cfg=tracing/smpi:1 to trace SMPI
450 - tesh files to check if smpi tracing is ok
451 - See examples/smpi/NAS/DT-trace
452 * GTNetS tracing re-worked
453 - adaptation to the tracing system of GTNets to cope
454 with modifications regarding the fullduplex mode
455 - new tesh files to check if gtnets tracing is ok
458 * Asynchronous communications through the functions:
459 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
460 * New function: MSG_load_platform_script()
461 to make possible using a lua script instead of XML files to set up platforms
462 * New function: MSG_set_function
463 to associate functions to processes, used when bypassing the parser
464 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
466 Platforms: Add some more examples in examples/platforms
467 * Grid'5000: see www.grid5000.fr
468 * *_30000_hosts.xml: various huge files [mainly scalability testing]
471 * Change the XML format. This is a very important modification. SimGrid
472 3.5 introduces a new hierarchical format based on the notion of
473 Autonomous Systems. Compatibility with old format is ensured
474 through the perl script provided in the install bin directory
475 bin/simgrid_update_xml.
476 It is now possible to build platforms with specific routing
477 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
478 connect several platforms together. We will try to provide soon
479 set of realistic platforms exploiting these properties (have a
480 look at examples/platforms/ for the moment).
481 * Take the opportunity of the XML format change to be a good XML citizen:
482 rename link:ctn to link_ctn and similar changes (also dealt with by
484 * Add a new routing scheme (rule-based) using regular expressions. It
485 enables to have an extremely low memory footprint when the
486 underlying routing is simple and can be compactly described. You
487 need to have libpcre4-dev (perl regular expressions) installed if
488 you want to use this routing scheme.
489 * Revive the cluster TAG and allow to easily and efficiently (both in
490 term of memory and speed) connect clusters together. Have a look
491 at teshsuite/simdag/platforms/ to see how this can be done. With
492 this tag, you can create clusters with thousands of tasks at no
493 cost (have a look at examples/platforms/).
494 Note: clusters are implemented as ASes, so there is no need for an
495 enclosing AS tag if you have only one cluster in your platform.
496 * Add new generic functions in the public interface that allows the user
497 to call SURF 'create_resource' methods from your code (same
498 functionality as the XML bypass mechanism but with a much lighter
500 * Add a new model (enabled through command line --cfg=network/model:SMPI)
501 that uses a piecewise linear approximation to produce better
502 results when exchanging small messages.
503 * Add a new parameter to handle correctly full duplex link and account
504 for interferences between uplink and downlink communications
505 (activate with --cfg=fullduplex:1).
508 * Rename the SD_READY (all dependencies are satisfied and task is
509 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
510 dependencies are satisfied) state.
511 This prevents a confusion between the notion of "ready to schedule"
512 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
513 simulated" (SD_RUNNABLE) used by the simulation kernel.
514 * Change the way a task is considered as ready. Instead of removing
515 dependencies when a task is done, a counter is decreased. This way,
516 it is always possible to reach ancestors thanks to the
517 SD_taks_get_parents function (even after the end of the simulation.)
518 * Change the return type of SD_Simulate from (SD_task_t*) into
519 xbt_dynar_t. This function was in handling a dynar internally and
520 converted it into a NULL terminated array for historical reasons.
521 * New function SD_dotload(char*) to load a DAG described in dot
522 format. This loader and the corresponding examples require the
523 installation of the graphviz library.
524 * Fix a bug in the management of tasks of size 0 in the surf network
525 models. This problem was only visible with SIMDAG and you should
526 thus disregard results produced with earlier versions if you
527 relied on this feature (some tasks were blocked because of this).
528 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
529 even though your applications were doing only point-to-point
530 communications and sequential computations. Now you can really use any
531 model you want (of course, if you create real parallel tasks, which are
532 not implemented in most models beside ptaskL07, this will abort).
533 * Add an example that schedules a DAX on an heterogeneous platform
534 using a Min-Min strategy.
535 * New function SD_workstation_get_current_task() that returns the kind
536 of task currently running on a workstation in the sequential access
538 * Raise some warnings when unexecuted tasks remains at the end of the
539 simulation. This is usually caused by cycles in the DAG.
542 * New function: SIMIX_process_set_function() called by MSG_set_function
543 * Change the underlying waiting queue in semaphores so that a process
544 can wait on several of them simultaneously (as in waitany).
545 * Fix the way to handle tokens in semaphores so that all access patterns
546 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
547 * kill the dirty pimple SIMIX_message_sizes_output()
548 Please use (proper) visualization instead
551 * New data container: setset (set of sets of elements)
552 * New module: mmalloc (mapped malloc, allowing to have several
553 independent segments of malloc)
554 * New function: xbt_dict_cursor_set_data()
555 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
556 * New function: xbt_dynar_is_empty()
557 * New function: xbt_fifo_get_last_item()
558 * Fix xbt_dynar_shrink(): use the right element size.
559 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
560 uninitialized areas during expand.
561 * Fix semaphores: previous implementation was severely broken.
562 * Use library init/fini functions for our initialization.
563 - you can use logs and other feature as soon as you want in your
564 code (even before the xbt_init / MSG_init)
565 - xbt_exit is now a no-op and produce a warning when used.
568 * Port GRAS to new SIMIX mechanisms. This allows gras users to
569 benefit from the latest improvement to the simulation kernel.
570 * Kill measurement sockets for now. If you rely on them, sorry. This
571 release is not for you. This feature will be reintroduced in the
572 future, but we cannot delay the release any further.
573 * New function: gras_msgtype_get_name().
574 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
575 * Fix (at last) the pmm example: it should not randomly fail anymore.
577 Build chain: bug fixes and overall polishing
578 * Cmake is now stable enough. Hence, we killed the autotools.
579 * Port to windows ( TM :)
580 * Fix the 'make install' target.
581 No need to use 'make install-simgrid' anymore
582 * Introduce a 'make dist' target compiling a *source* archive
583 'make package' compiles a binary archive
584 * Compile java files only on need
585 * Add --cd and --setenv command line options to tesh
586 * Out of source builds are not fully supported yet, but we are close
587 * Enable supernovae and optimization flags by default for our users
590 * Add layer to set up environment directly from lua, without XML.
591 * The effect of gras_stub_generator can be achieved through
592 lua too (check examples/gras/console/ping_generator.lua)
594 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
596 SimGrid (3.4.1) stable; urgency=low
598 The "Polishing easter eggs is probably a good idea" release.
599 This is a bug fixes release only.
603 * Fix a bug preventing the tasks from begin garbage collected.
606 * Fix a bug occuring when a host involved in a communication fails.
607 This was not detected properly by the other peer involved in the
608 communication. Now, it's reported as a network error.
611 * Warn the user about loop dependencies in data flow of DAX files
612 * Obey the control-flow dependencies of DAX files
615 * Add option "enable_smpi" allowing to not compile SMPI.
616 Probably useful for the (Mac) users experiencing a build error here
617 * Improve the detection of lua5.1 and ruby1.8
619 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
621 SimGrid (3.4) stable; urgency=low
623 The "Easter in Cargese" release. Also known as (major changes):
625 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
626 ~> bindings were greatly improved
627 ~> new tracing infrastructure for better visualization introduced
629 * the "Welcome to configury modernity" release.
630 ~> we switched from autotools to cmake, and improved our cdash
633 A more detailled list of changes follow (full detail in svn log).
635 Java Bindings: Various Cleanups
636 * (install java-gcj-compat-dev on debian-like to use them)
637 * Remove put/get: no need to export deprecated interface in Java
638 Use send/receive instead.
639 * Cleanup the examples and add a README per directory
640 * Remove example autoDestination (that's the only way to go now)
641 * Remove example explicitDestination (was a plain copy of basic)
642 * Make JniException a runtime exception, so that there is no need to
643 declare the fact that you may encounter such a beast. I guess that
644 nobody will ever want to survive such error.
645 * Create specific errors for each MSG case of failure:
646 host failure, transfer failure, timeout, task cancelled
647 * Cleanup the exceptions that may get thrown by each function
648 * Other internal cleanups in Java bindings. Performance still bad :/
649 Ruby and Lua Bindings: create them
650 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
651 * That's new and great, you should try them out.
652 Same functionalities than Java bindings, only even less polished
654 * Kill the useless "rate" argument of SD_task_get_execution_time()
655 Everyone used to provide -1 as a value, it was not used, and the
656 semantic of a possible use wasn't even clear.
657 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
658 either as comm costs or compute costs to mean that there is no
659 such thing for that specific task.
660 * Add a SD_task_set_name() function
661 * Fix SD_task_unschedule() on typed tasks
662 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
663 * In DAX loader, accept useless 'level' attributes to <job> since
664 LIGO DAGs have them (seem to be to ease graphical representation).
666 * Add an example masterslave_mailbox.c using send/receive and not
667 the deprecated put/get interface.
668 * Kill the MSG_paje_output() function. It's a noop since 2 years.
669 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
671 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
672 (declare MSG_USE_DEPRECATED to still have the old name)
673 * Add a MSG_task_set_data() function
674 * About trace replay (see examples/msg/actions):
676 - Allow to work with splitted trace files for each process
677 Give the specific trace file as argument of each process,
678 and call MSG_action_trace_run(NULL)
679 You can still have one merged file for all processes.
680 - Fix implementation of collective operations
681 * Allow task_execute() on 0-sized tasks (closes #10063)
683 * This is the first release of SimGrid where SMPI is not considered
684 beta anymore (even if some corners should still be improved)
685 * Port over the new SIMIX_network submodule (internal refactoring)
686 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
687 * Implement more missing elements of the standard:
689 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
691 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
692 MPI_Scan() MPI_Get_processor_name()
693 - Added implementation of missing case for Alltoall (warning: it's
694 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
695 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
696 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
697 SMPI_MPI_Allgatherv()
699 - MPI_Waitsome() was broken
700 - Allow relative includes in smpicc
701 - Command line cfg argument 'reference_speed' was ignored...
702 - Some functions did not properly lead to auto-benching of user code
703 - smpicc passes -O2 by default (just like openmpi one)
705 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
706 * Bug fixes about timeouts during communications
707 * add SIMIX_message_sizes_output() as a pimple to write to file the
708 amount of messages per size. Use gnuplot to get histogram.
709 Pimple because that's the only user-visible function of simix,
710 defined directly in xbt.h (irk, sorry)
712 - Add a SIMIX_sem_get_capacity() function
713 - Fix interactions with processe resume/suspende
714 - release_forever() was stupidly broken
715 - Fix SIMIX_display_process_status() for processes in a semaphore
716 - Make SIMIX_sem_block_onto() user-visible
717 * Refactoring context stuff:
718 - Use pseudo-OOP for better modularity
719 - reimplement SIMIX_process_kill() without process_schedule() so
720 that the latter can take as invariant that it is called from
722 - Merge context_start into context_new for sake of simplicity
724 * Add a Vivaldi network model, coded live during SUD'10 ;)
725 * Rename configuration variables to start a hierarchy:
726 o cpu_model -> cpu/model
727 o network_model -> network/model
728 o workstation_model -> workstation/model
729 * New configuration variables:
730 o network/bandwidth_factor: correction to bandwith
731 o network/latency_factor: correction to latency
732 o netwotk/weight_S: correction to the weight of competing streams
733 * Add a long description to the models, that users can see with such
734 argument on the command line: --cfg=cpu/model:help
735 * --help-models display the long description of all known models
737 * config: add the ability to set a default value after registration
738 Does not override any previously set value (e.g. from cmd line)
739 * dict: allow to have integer key and data.
740 When so, you need to use the following functions
741 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
742 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
743 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
744 In contrary to regular dicts, the key is not malloced before copy.
745 Mixing scalar and regular elements in the same dict is not tested
747 * Allow to use xbt_dynar_shrink() to expend the dynar instead
748 Tracing for Visualization:
749 * SimGrid is now instrumented in order to generate a trace file for
750 visualization analysis: to use it, need to compile SimGrid with the
751 "tracing" option enabled, and instrument the program using SimGrid with
752 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
753 (among other functions).
754 * The instrumentation only traces the platform utilization for now
755 * Documentation to use the tracing functions and how to analyze the
756 traces with the Triva tool is written.
757 * More information about: SimGrid FAQ (in the section Tracing Simulations
760 * We moved to cmake as default build system. Autotools support will
761 be dropped soon. Check the FAQ for more info about how to use it.
762 * Greatly improved our cdash/ctest interactions
763 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
764 * Added memory checking tests with valgrind; lot of memleak fixing.
765 This may be the first release of simgrid with so few memory issues
766 * Added code coverage tests.
767 Our coverage is still improvable, but at least we see it on cdash.
769 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
771 SimGrid (3.3.4) stable; urgency=low
773 The "Desktop Grid needs love too" release (also called Xmas release).
776 * Major speedup in the maxmin system solving by using lazy evaluation
777 Instead of solving completely the maxmin system at each iteration,
778 only invalidate (and recompute) the modified parts.
779 This new feature is enabled in default models but you can try to
780 turn it on with "--cfg:maxmin-selective-update=1" for other models.
781 * Cas01 IMproved as default CPU model
782 This CPU model is the same Cas01 model, but it uses the
783 maxmin-selective-update flag and a heap structure to manage
784 actions on SURF kernel.
785 It reduces the complexity to find the next action to finish and,
786 consequently, it's faster than the old Cas01.
787 This is the new default CPU model (Cas01).
788 * Rename the old Cas01 model to Cas01_fullupdate
789 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
790 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
791 * CpuTI (CPU Trace Integration)
792 A new CPU model whose objective is simulate faster when using
793 availability trace files.
794 Instead of using a full featured, over engineered maxmin system for
795 CPU modeling, this model does the pre-integration of traces files
796 to calculate the amount of CPU power available, and so, executes
797 faster than the old CPU models.
798 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
799 * Use LV08 as default network model since it gives better accuracy
800 for small messages and shouldn't change things for big ones.
801 Use --cfg=network_model:CM02 to get the previous behavior.
804 ******************************************
805 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
806 ******************************************
807 * The new CPU model may changes simulations!
808 The point is that events occurring at the exact same timestamp
809 are not scheduled in the same order with the old and new
810 version. This may be enough to completely change the execution
811 of simulations in some cases.
812 * The new network model will change simulations!
813 This new model is more realistic than the previous one, so you
814 should consider redoing your old experiments with this model.
815 Sorry for the inconvenience.
818 * Introduce the supernovae compilation mode
819 When compiled that way, the whole SimGrid (or almost) is put in a
820 single compilation unit and compiled in one shoot.
821 This is to help gcc which has difficulties to inline stuff from one
823 The speedup seem to be above 15%, althrough more tests are needed on
824 amd64 to confirm that gain.
827 * Port of MSG's mailbox on top of SIMIX network
828 The put/get mechanism was greatly simplified on the way.
831 * New SIMIX network module. Provides:
832 - Mailbox: rendez-vous mecanism to find with who you want to speak
833 - Synchronous send/recv: easier and hopefully faster since the
834 logic is handled in the maestro process directly now
835 - Asynchronous send/recv: you dreamt of it? It's here now
836 Too bad that nobody cared enough to propagate the change to MSG.
837 * Add semaphores as SIMIX synchronization mechanism.
840 * new function SD_daxload(char*) to load a DAX file
841 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
842 * Introduce typed tasks. Specify its kind and cost at creation.
843 At scheduling, just give where it should be placed, and the cost
844 for each involved resource is automatically computed.
845 Existing constructors so far (more to come of course):
846 - SD_task_create_comm_e2e() for end-to-end communication
847 - SD_task_create_comp_seq() for sequential computation
848 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
849 * new function SD_task_dump() for debuging display
850 * new function SD_task_dotty(task,FILE*) writing to file the info
851 about the task in dotty format
852 * SD_task_dependency_exists() can now cope with having one of its
853 arguments NULL. If so, it tests whether the other argument has any
855 * Add getters on list of preceding/following tasks:
856 SD_task_get_parents(task) and SD_task_get_children(task)
857 * Add getters on amount of workstations and list:
858 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
859 * Add getter on task kind: SD_task_get_kind(task)
860 * Update the start_time and finish_time of tasks on completion/failure
861 * Bugfix: Remove task from state swags when destroyed
864 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
867 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
868 dynar with one separate thread per value of the dynar.
869 * Change the prototype of xbt_thread_create(), sorry.
870 Added a boolean parameter indicating whether we want to join this
871 thread (used in SG only for now)
872 * Implement xbt_thread_join and xbt_thread_yield in SG also.
875 * GTNetS wrappers should now be usable again (and betterly tested too)
876 * Fix a major regression from 3.2 where the timeout provided to
877 MSG_task_put_with_timeout() was used as absolute time before which
878 the comm should be done.
879 * Start to fix the <cluster> tag.
880 - Internal links should be good now (beside of the loopback, which
881 use the private link instead)
882 - paths to the external world is still rather broken
883 - the <route:multi> tag is just broken. Actually that's brain-dead.
884 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
885 to make it less stupid
886 ** Check your platform with teshsuite/simdag/platforms/flatifier **
887 * Fix a source-level compatibility glitch from 3.2: after defining
888 MSG_USE_DEPRECATED, you can use the old name
889 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
890 * Allow to compile from the SVN with automake 1.11
891 * Fix some problems when using the "start_time" tag in deployment XMLs.
892 * Fix #8569: XBT/synchro.h has redundant declarations
893 * Fix #8563: MSG return values and exceptions
894 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
895 * Integrate patch #8636: Obey DESTDIR when installing documentation.
896 Thanks to Robson Peixoto.
897 * Fix a vicious bug in dictionaries inducing that some elements were
898 not freed on xbt_dict_free()
900 Portability report of this version:
901 * Main portability targets:
902 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
904 - mac leopard on i386
905 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
906 but nothing critical.
907 * Other platforms: windows, AIX and others were not tested for this release
909 Timing report of this version:
910 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
911 scenario parameters). From 8h to a few seconds in desktop grid settings.
912 * Supernovae brings about 25% speedup on i386.
914 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
916 SimGrid (3.3.3) stable; urgency=low
918 The "Need for Speed" release.
920 The timings done to validate the 3.3.2 were faulty.
921 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
923 The problem was a conversion from a manually handled vector to
924 xbt_dynar_t on the critical path.
925 xbt_dynar_foreach calls functions, inducing stack management crap.
927 We inlined these functions and xbt_dynar_foreach is now breath taking.
928 We also inlined xbt_swag_belong on the way.
930 Here are some approximate speedup measurements (on master/slaves
931 simulations lasting between 10s and 20s each):
932 3.3.1 -> 3.3.2: about same performance
933 3.3.2 -> 3.3.3: 40% speedup
934 3.3.1 -> 3.3.3: 40% speedup
935 3.3.1 with inline patch -> 3.3.3: 30% speedup
937 Our reading is that the refactoring which occurred in 3.3.2 made us
938 suffer much more from the xbt_dynar_foreach low performance, but
939 once we solved this, this refactoring proved to be very performance
940 effective. From the 40% speedup, somehow, 10% are due to the
941 inlining and 30% to the refactoring.
943 That's a pitty that gcc cannot inline functions placed in other files
944 alone. We have to choose between:
945 - break the encapsulation (by putting private data structures and
946 accessors in headers files to help gcc)
947 - live with low performance
948 - switch to a decent compiler such as icc (not quite possible).
950 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
952 SimGrid (3.3.2) stable; urgency=low
954 The "Simplicity does not preceed complexity, but follows it" release.
956 The main contributors of this release were (lexical order):
957 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
960 * Extract the routing logic into its own object.
961 (was dupplicated in network.c and workstation_LV07.c;
962 Allows to implement other ways of storing that info)
963 => kill now useless network_card concept
964 - Use dynar to represent routes (instead of void** + int*)
965 - kill link_set (use surf_network_model->resource_set instead)
966 - Add a command-line option to choose the routing schema to use
967 - Add three new models:
968 * Floyd (shortest path computed at initialization)
969 * Dijikstra (shortest path recomputed all the time)
970 * Cached Dijikstra (shortest path computed on need)
971 All these models where contributed by Silas De Munck, and are
972 described in his ICCS09 paper.
974 * Simplify model declaration
975 (less redirections, less function to write when defining a model)
976 - Factorize stuff between models:
979 surf_model_resource_set(model)
980 surf_model_resource_by_name(model, name)
981 - Unify the types of models in s_surf_model_t (using an union)
982 - Embeed fields of common_public directly into s_surf_model_t
983 - Rename model methods:
984 action_free ~> action_unref
985 action_change_state ~> action_state_set
986 action_get_state ~> action_state_get
987 - Change model methods into functions :
988 (model)->common_public->action_use ~> surf_action_ref
990 * Implement a generic resource; use it as ancestor to specific ones
991 (allows to kill duplicated code in models)
992 Drawback: timer command don't need no name nor properties;
993 workstation_CLM03 don't need no properties
994 (but I guess we can live with those few bytes wasted)
996 * Improve the action object model
997 - implement a constructor avoiding dupplicated code about field
998 initialization in generic_action part.
1000 * Kill the SDP model: it has an external dependency, is deprecated
1001 in flavor of modern lmm models, and didn't compile since a while
1004 * Relocation of the context module from XBT to SIMIX.
1005 (the context were decoupled from the simix processes, duplicating a lot of code)
1006 => a lot of code was factorized
1007 - less overhead is introduced during scheduling
1008 - simpler API for the context factory
1009 - the logic for process creation,destruction and manipulation was simplified
1010 * Simplification of the s_smx_process_t data structure.
1011 => accesing the simix level data associated to a process is faster now,
1012 and the code is a lot more readable.
1015 * Implement some more MPI primitives:
1016 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
1017 -implementation: Bcast: flat or 2-ary tree (default),
1018 Barrier: 4-ary tree,
1020 Allreduce: Reduce then Bcast
1021 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
1022 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
1023 Alltoallv: flat tree, like ompi
1025 * Add support for optimized collectives (Bcast is now binomial by default)
1026 * Port smpirun and smpicc to OS X
1029 * Kill SD_link_get_properties: hard to maintain and makes very little sense
1030 Shout out if you used it.
1033 * Display the list of still queued messages in SG mode when existing
1037 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
1038 * Add xbt_graph_node_get_outedges() [Silas De Munck]
1039 * Add xbt_str_from_file(FILE*)
1040 * Add xbt_dict_get_key achieving a linear reverse search
1041 * Remove the context module
1043 Portability report of this version:
1044 * Main portability targets:
1045 - Linux(debian)/x86/context
1046 - Linux(debian)/x86/pthreads
1047 - Linux(debian)/amd64/context
1048 - Linux(debian)/amd64/pthreads
1049 On these, we still have the eratic breakages of gras/pmm and
1050 amok/saturate_sg reported in previous version. We still think
1051 that the tests are the cause of the fault, not the tested code.
1053 - Mac OSX Leopard/x86/context
1054 Still false negative in tesh autotesting.
1055 Smpi still fails, but this time because readlink does not accept -f
1056 Everything seems to work properly beside of that.
1059 - AIX version 5.3 (only tested contexts this time)
1060 Smpi still fails there because mktemp is not installed.
1061 Everything seems to work properly beside of that.
1063 I managed to compile it for the first time, but several breakages.
1064 Won't delay the release for this exotic platform.
1066 * Windows: it's still lagging behind. If you want to help, please
1069 Timing report of this version:
1070 This version seem to be more than 5% faster than 3.3.1 (on linux
1071 64bits with contextes). The gain is less than expected, we are
1072 investigating this for next release.
1074 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
1076 SimGrid (3.3.1) stable; urgency=low
1079 * Implement a --cfg-help to show existing configuration variables
1080 * Build chain do not require doxygen in maintainer mode
1083 * fix a bug on struct sizeof computation, which prevented the
1084 exchange of arrays of structs in some conditions
1085 - added a regression test about this in datadesc_usage
1086 * Allow the exchange of 0-long dynamic vectors.
1087 - for that, use -1 as indicator of dynamic size instead of 0
1088 - This implied to change any size from unsigned long to long,
1089 reducing a bit communication abilities, but I guess that with
1090 64bits being quite common, this is more than enough.
1091 - This also induce a protocol change, thus bumping network protocol
1092 version from 0 to 1 (if we have external users, we have to get
1093 clean on that point too ;)
1094 - added two regression tests about this in datadesc_usage
1095 * Be more verbose when propagating local exceptions
1096 This helps debugging.
1097 * Display the status of simulated processes when receiving SIGINT in
1101 * Allow to control the simulation from a trace file.
1102 New functions MSG_action_register() and MSG_action_trace_run()
1103 The first one allows to associate a function execution to each
1104 kind of action while the second one parses a trace file and
1105 triggers the corresponding actions within the system.
1106 For now, only a toy example is provided in examples/msg/actions
1107 * Add an exemple of process migration in examples/msg/migration
1108 * Fix a bug in task exchange which broke MSG_task_get_sender()
1109 Add a teshsuite regression test for that.
1110 [Bug: if MSG_task_get_sender() is called after sender exit,
1112 * Fix a bug which prevented suspend/resume to work properly
1113 * Display the status of simulated processes when receiving SIGINT
1114 This fixes a regression of v3.3. due to the introduction of SIMIX
1115 * Bug fixing in failure management:
1116 - trace could not start by a failure at time 0
1117 - failure during communications were not working
1120 * Add SIMIX_process_set_name() to change the name of the current
1121 process in the log messages.
1122 * Store smx_hosts in a dict since we only retrieve them by name
1123 * Move the configuration infrastructure to surf
1126 * Move the configuration infrastructure to surf
1129 * Massive internal cleanups:
1130 - Store internal structures on processes instead of hosts (allows
1131 to have more than one process per host, in addition of being more
1133 - Cleanup the initialization/finalization process
1134 - Kill a whole bunch of unneeded synchronization:
1135 processes run in exclusive manner within the simulator
1136 - Move queues from global tables to process data fields
1138 - now accept -platform and -hostfile arguments
1139 - Pass the right rank value to processes according to the hostfile
1140 * Compile the examples by default, and use them as regression tests
1141 * Implement MPI_Wtime()
1142 * Change the reference speed to a command line option
1145 * TCP_gamma can now be specified as command line option using
1146 --cfg=TCP_gamma:10000000.0
1147 * Change the --surf-path cmd line option into --cfg=path:
1150 * Also include strbuff from xbt.h public header
1151 * xbt_ex_display(): do not free the exception after displaying
1152 This allows to do more with the given exception afterward.
1153 Users should call xbt_ex_free() themselves.
1157 Portability report of this version:
1158 * Main portability targets:
1159 - Linux(debian)/x86/context
1160 - Linux(debian)/x86/pthreads
1161 - Linux(debian)/amd64/context
1162 - Linux(debian)/amd64/pthreads
1163 These targets fail about 1/10 of times on gras/pmm, but we believe
1164 that this is because of the test, not because of simgrid.
1165 amok/saturate_sg fails even more rarely, and the test may not be
1168 - Mac OSX Leopard/x86/context
1169 The test suite still spits tons of errors because some obscure
1170 force prevents us from removing the temporary directories
1171 arguing that they still contain some metadata I've never heard of.
1172 Smpi fails because seq is not installed.
1173 Everything seems to work properly beside of that.
1176 - AIX version 5.3 (both contexts and pthread)
1177 Smpi still fails there because mktemp is not installed.
1178 XML inclusions seems rosty on AIX.
1180 * Windows: it's still lagging behind. If you want to help, please
1183 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
1185 SimGrid (3.3) stable; urgency=high
1189 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
1190 [Malek Cherier & Mt]
1192 * Introduce the SIMIX module: factorize code between MSG and GRAS.
1195 Until now, GRAS were using MSG as an interface to SURF. It was
1196 quite difficult because both interface have several differences
1197 (MSG channels vs GRAS sockets were the most notable point).
1199 This also opens the gate to SMPI (which should occur soon) and speed
1200 up simulations by to 40% (even if it were not the main goal).
1202 **************************************
1203 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
1204 **************************************
1205 The point is that events occuring at the exact same timestamp are
1206 not scheduled in the same order with the old and new version. This
1207 may be enough to completely change the execution of simulations in
1208 some cases. Sorry for the inconvenience.
1210 * Cleanup and upgrade the XML format to push further scalability
1211 issues (check http://hal.inria.fr/inria-00256883/ for more info)
1213 * Improve the testing infrastructure with tesh. Now a very large part of
1214 the code is tested not only by being run but also by checking that the
1215 output match an expected output [Mt].
1217 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
1218 is really less memory-demanding, which should allow you to use
1219 larger files in SimGrid [AL].
1221 * Inform valgrind about our contextes, so that it becomes usable
1222 with the default (and more effecient) version of SimGrid
1223 [contributed by Sékou Diakite, many thanks]
1226 * Introduce a listener thread in charge of receiving incoming
1227 messages from the network. It allows to overlap communication and
1228 computation but most notably, it removes some stupid deadlocks due
1229 to the fact that so far, a process could not send and receive at
1230 the same time. This made most non trivial communication schema
1232 * Convert the PIDs from long int to int to match the MSG ones (and
1233 linux ones too) [Mt]
1234 * New function: gras_agent_spawn() to launch a new process on
1235 current host. Only working in simulation for now. [Mt]
1236 * New function: gras_os_hostport() returning a constant form (ie,
1237 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
1240 * Make the backtrace of exceptions more human readable [Mt]
1241 * New module: xbt/str [Mt]
1242 a ton of string utility functions (split, join, printf to a newly
1243 allocated buffer, trim, etc)
1244 * New module: xbt/hash [Mt]
1245 SHA1 hashing algorithm (more to come if needed)
1246 * New module: xbt/synchro [Mt]
1247 synchronization tools (mutex and conditions) working the same way
1248 in simulation and in real life (mainly useful for GRAS, but not
1250 * New module: xbt/queue [Mt]
1251 classical producer/consumer synchronization scheme
1252 * xbt_dynar_new_sync() creates a synchronized dynar. All access
1253 (using the classical functions will get serialized) [Mt]
1254 * Make dictionary internal table dynamic. No need to specify its size
1255 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
1257 * Make sure the log channels are organized as a tree under windows
1258 (because of ANSI C compatibility issue, any channel were child of
1259 root directly) [Mt].
1262 * Cleaned many thing in surf and fixed a few bugs [AL].
1263 * Add a nice command line configuration mechanism to compose models [AL].
1264 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
1265 the previous one (KCCFLN05). It relies on something that looks like
1266 a max-min sharing mechanism but cannot be written as such. A new solver
1267 was thus designed [AL].
1268 * Add a new solver to lmm. Based on Lagrange optimization and
1269 gradient-based descent, it enables to efficiently maximise systems s.a
1271 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
1273 This solver enables to propose two new network models for TCP Reno and
1274 TCP Vegas based on Low's work. These models still need to be fully
1275 tested though [Pedro Velho].
1278 * Bug fix in SD_simulate. Now the time bound given as argument is
1280 * Use the new parallel task model (ptask_L07) as default.
1281 * Use the SURF command line configuration mechanism.
1282 * 0-size tasks (for synchronization) should now work.
1284 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
1286 SimGrid (3.2) stable; urgency=high
1290 We still experience issues on this platform, but we believe that at
1291 least MSG is usable.
1293 GRAS API BREAKAGE (for simplification purpose, sorry):
1294 * the gras_msgtype_by_name is not used anymore. Instead of
1295 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
1296 you can write (and must)
1297 gras_msg_send(toserver, "request", &request);
1298 - If you still want to pass a gras_msgtype_t to the function (to cache
1299 the type and avoid the lookup time), use the gras_msg_send_() variant.
1300 - Impacted functions:
1301 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
1302 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
1303 * The callbacks are now expected to return 0 when everything went well
1304 (just like the main() function)
1306 GRAS new features and improvements:
1307 * New module mecanism where user code can use per process globals [Mt]
1308 This is similar to gras_userdata_*() functions, but for libraries. It
1309 factorize some code developped over and over in the examples and AMOK.
1310 It has still to be documented and used (only amok/peermanagement is
1312 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
1313 loss when they were small enough to fit into the buffer and sent quickly
1314 enough so that they can all get received in one shoot.
1315 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
1316 if not found. Use the *_or_null() variant for the old semantic.
1317 * In gras_msg_handle, do not discard messages without callback.
1318 They are probably messages to be explicitly awaited later (ie, proofs of
1319 mis-synchronization in userland since they are sent before being awaited)
1320 No big deal usually.
1321 * gras_socket_meas_send/recv: semantic changed!
1322 The numerical arguments used to be (1) the total amount of data to send
1323 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
1324 messages. This was need for the fool willing to send more than MAXINT
1325 bytes on quite fat pipes.
1328 * Do really rename the hostmanagement module to peermanagement. [Mt]
1329 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
1330 but this is rather new and this was documented in the module
1331 documentation (poor excuses, I admit)
1332 * Bandwidth measurement semantic changed! This follows the changes to
1333 gras_socket_meas_send/recv explained above.
1336 * A sequential mode has been added to the workstations. When a workstation
1337 is in sequential mode, it can execute only one task, and the other tasks
1338 are waiting in a FIFO. [Christophe Thiery]
1341 * The KCCFLN05 workstation model now handles parallel tasks. It is the
1342 model for SIMDAG. [Christophe Thiery]
1343 * Bug fix in the maxmin solver: Some values were close to 0 instead of
1344 equal to 0, which caused some bad behaviors in
1345 saturated_constraint_set_update. I now use a threshold mechanism like in
1349 * When running manually src/testall, you select specific units [Mt]
1350 testall is the result of our cunit mecanism, and should replace all
1351 the scripty thingy around since bash don't run easily on billware.
1353 * A mallocator system has been added. [Christophe Thiery]
1354 Mallocators allow you to recycle your unused objects instead of freeing them
1355 and allocating new ones.
1357 Documentation update:
1358 * FAQ reworking + New FAQs:
1359 - "Valgrind spits tons of errors!" [Mt]
1360 - "How to repport bugs" [Mt]
1361 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
1362 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
1363 - Communication time measurement within MSG [AL]
1364 - I experience weird communication times when I change the latency [AL]
1365 * GRAS tutorial [Mt]
1367 - an introduction to the framework and to the used communication model
1368 - an initiatic tour introducing the most proheminent features:
1370 . Lesson 0: Installing GRAS
1371 . Lesson 1: Setting up your own project
1372 o Part 2: Message passing
1373 . Lesson 2: Exchanging simple messages
1374 . Lesson 3: Passing arguments to the processes (in SG)
1375 . Lesson 4: Attaching callbacks to messages
1376 . Lesson 5: Using globals in processes
1377 . Lesson 6: Logging informations properly
1378 . Lesson 7: Using internal timers
1379 . Lesson 8: Handling errors through exceptions
1380 . Lesson 9: Exchanging simple data
1381 . Lesson 10: Remote Procedure Calling (RPC)
1382 . Lesson 11: Explicitely waiting for messages
1383 . Recapping of message passing features in GRAS
1384 - A HOWTO section containing:
1385 o HOWTO design a GRAS application
1386 More are due, of course. They will come latter. In the meanwhile, you can
1387 check the examples which are still here.
1389 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
1391 SimGrid (3.1) stable; urgency=high
1395 There was a stack corruption somewhere, visible only when optimizing
1396 with these versions. [Vince]
1399 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
1400 module that enabled to play with Directed Acyclic Graphs. It is built
1401 directly on top of SURF and provides an API rather close to the old
1402 SG. Some old codes using SG are currently under rewrite to check that
1403 all needful functions are provided. [Christophe Thiery]
1406 * Complete rewrite of the KCCFLN05 workstation model. It is now an
1407 extension of the classical CLM03 model that gracefully handles
1408 failures. This is now the default model for MSG and GRAS. It doesn't
1409 handle parallel tasks yet though. [AL]
1410 * Bug fix: Weights were not correctly set in the network part.
1411 WARNING: This may have resulted in incorrect results with simulations
1412 where there are more than one flow on a given link. [AL]
1415 * After a (long ?) discussion on simgrid-devel, we have decided that the
1416 convention we had on units was stupid. That is why it has been decided
1417 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
1418 WARNING : This means that all previous platform files will not work as
1419 such with this version! A warning is issued to ask users to update
1421 A conversion script can be found in the contrib module of the CVS, under
1422 the name contrib/platform_generation/surfxml_update.pl [MQ]
1425 * Bug fix: Processes were started in reverse order, wrt deployment file.
1426 WARNING: if your code relies on this bug, please fix it. [AL]
1427 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
1428 being executed on two different locations. [AL]
1429 * Bug fix: Failures are now better supported thanks to Derrick's tests
1430 (there was many failure situations I hadn't thought of and that weren't
1431 correctly handled). [AL]
1432 * New function: MSG_host_is_avail indicates you whether a given m_host_t
1436 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
1437 Exception occurring on server-side are propagated back to client (!).
1439 API CHANGE: the callback changed their prototype. Change:
1440 int my_handler(gras_socket_t expeditor, void *payload_data) {
1442 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
1443 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
1445 * New! function: gras_msg_handleall to deal with all messages arriving
1446 within a given period.
1447 * New! function: gras_socket_server_range to get a server socket in a
1448 range of port numbers (ease to avoid port number conflicts) [MQ]
1449 * New! gras processes display their backtrace when they get a SIGUSR1
1450 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
1451 Sweet to debug RL processes [MQ]
1455 - Do not force experiment sizes to be expressed in kb, or it becomes
1456 impossible to measure the latency this way (needs one byte-long tests)
1457 WARNING: this changes the amok_bw_* function semantic. [MQ]
1458 - Implements the link saturation stuff. [MQ]
1459 * Peer management module:
1460 New! module factorizing code that we wrote over and over [MQ].
1463 * New module: cunit (my jUnit implementation in ansi C) [MQ]
1464 - Test units are placed directly into the library code, they get extracted
1465 automatically and placed into the src/testall binary.
1466 - Convert most of the XBT tests to this system.
1467 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
1468 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
1469 live in the same C code. This required to change a little bit the API
1470 of surfxml parsing but shouldn't be an issue for end-users. [AL]
1471 * New module: sparse graph structure with basic algorithms (this is work
1472 in progress and the API is not considered to be frozen yet). [AL]
1473 * Display more information on backtraces: source line & function names are
1474 now displayed just like valgrind does (rely on addr2line tool) [MQ]
1475 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
1476 * Reworked a little bit some #include statements to load only required
1477 headers. Some user code that relied on SimGrid to include stdlib or
1478 stdio may need to include it by themselves. [AL]
1479 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
1481 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
1482 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
1483 but I guess that almost nobody used those parts. [MQ]
1485 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
1487 SimGrid (3.0.1) stable; urgency=low
1490 * Unfortunately, I had missed 5 misnamed functions:
1491 xbt_fifo_item_t xbt_fifo_newitem(void);
1492 void xbt_fifo_freeitem(xbt_fifo_item_t);
1493 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
1494 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
1495 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
1496 They're now deprecated. Please use their new versions:
1497 xbt_fifo_item_t xbt_fifo_new_item(void);
1498 void xbt_fifo_free_item(xbt_fifo_item_t);
1499 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
1500 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
1501 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
1503 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
1504 * Documentation: xbt_log module unmercifully reworked [MQ]
1505 * Bugfix: there was a problem with the ending of contexts with
1506 the pthread backend. It caused some weird deadlock or behavior
1507 depending on the pthread implementation. [AL]
1508 * Bugfix: get the exceptions raised in the simulator repport where
1509 and why they come from when they are not catched in time [AL, MQ]
1512 * Bugfix: Do repport the error when two non-connected hosts try to
1513 exchange data (Thanks to Flavien for stumbling into this one) [AL]
1516 * Add additionnal checkings on communications. Assert that two
1517 communicating hosts are connected by a set of links... [AL]
1520 * Add additionnal checkings on channel values in communication [AL]
1521 * New: MSG_task_get_source to see on which host a task was generated [HC]
1522 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
1523 the number of tasks waiting to be received on channel and sent
1525 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
1526 waits for the first task coming from a given host.. [AL]
1528 GRAS new functionnalities: [MQ]
1529 * Enhance the parsing macro to allow the size of multidimentional objects
1530 to be given thru annotations.
1531 * New example (and documentation): Matrix Multiplication a la RPC
1532 (as when I was young!) and fix a bunch of bugs found on the way.
1534 GRAS performance improvements: [MQ]
1536 * Reduce the amount of cbps creation/destruction by making it static to
1537 datadesc_send/recv() and using a (newly created) cbps_reset (based on
1540 * Change libdata to a set so that we can search for stuff by ID (and thus
1541 reduce the insane amount of dict lookups)
1544 * Actually implement gras_datadesc_copy() so that we don't have to mimick
1545 RL communication on top of SG since it's so uneffective.
1546 It may also be used for inter-thread communication in RL, one day.
1547 * Use gras_datadesc_copy() to exchange messages on top of SG
1549 - improve message exchange performance on top of SG
1550 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
1551 * Don't exchange on the network the size of the used part of buffer,
1552 instead, specify the possible buffer size to read().
1554 - reduces the amount of read/write calls (one pair per exchange)
1555 - reduces the amount of exchanged data (the size)
1556 - allows to retrieve all arrived data on receiver side, if we don't need
1557 it right now (subsequent read will peek the buffer)
1558 - allows the receiver to proceed with the begining of the stream before
1559 everything is arrived
1560 - make it possible to build an iov transport (using readv/writev)
1562 - take care of the data with non-stable storage (like stacked data),
1564 * If possible, TCP send uses vector I/O (when writev() is here)
1565 - Don't use it for receive since we send data sizes and data on the
1566 same stream, so we wouldn't be able to chain large amount of chunks
1567 before having to flush the stuff to read the size.
1568 * Rework the transport plugin mecanism to simplify it and reduce the
1569 amount of pointer dereferencement when searching for the right function
1572 * I guess that now, we do almost as few system calls as possible while
1573 doing as few data copy as possible.
1575 To improve it further, we could try to send all the sizes first and then
1576 all the data (to use iov on receiving size), but it's only a partial
1577 solution: when you have 2 dimensional data, the sizes of the second
1578 dimension is data of the first dimension, so you need 3 streams.
1580 I'm not sure the potential performance gains justify the coding burden.
1582 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
1584 SimGrid (3.00) stable; urgency=high
1587 * New! Give the possibility to hijack the surf parser and thus bypass
1588 MSG_create_environment and MSG_launch_application. Have a look at
1589 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
1591 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
1593 SimGrid (2.96) unstable; urgency=low
1598 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
1599 This deprecates the xbt_error_t mecanisms.
1600 It modifies (simplifies) all XBT and GRAS API.
1601 MSG API keeps unchanged (exceptions raised by XBT are catched from
1602 within MSG and masked with existing error handling facilities)
1605 * New! Add a FATPIPE model. [AL]
1606 * New! Add a parallel task model. [AL]
1607 * New! Add automatically a loopback interface (in the default
1608 network model) if none was precised.
1611 * Bugfix: MSG_process_resume now works with the current running process.
1613 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
1614 * Modification of MSG_task_get_compute_duration. Once a task has been
1615 processed, the value returned by this function is now equal to 0. [AL]
1616 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
1617 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
1618 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
1619 of a m_task. For now, MSG_task_cancel only works with computation
1621 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
1622 of the processor (in Mflop/s) regardless of the current load on the
1624 * API Change: use proper naming convention for MSG_getClock and
1625 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
1627 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
1628 This function changes the priority of a computation task. This priority
1629 doesn't affect the transfer rate. A priority of 2 will make a task
1630 receive two times more cpu power than the other ones. This function
1631 has been added to suit the needs of Nguyen The Loc and hasn't been that
1632 much tested yet. So if it fails, please report it and send me your code.
1634 * API Change: removed all functions and types that were marked "deprecated"
1635 since many months. Renamed MSG_global_init_args to MSG_global_init.
1637 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
1639 SimGrid (2.95) unstable; urgency=low
1642 * Steal some nice code to GNU pth to fix context detection and usage [AL]
1643 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
1644 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
1647 * Bugfix: Allow absolute paths for platform description files [MQ]
1648 * Bugfix: do free the variables after use. Leads to drastic performance
1650 * Implement max_duration (ie, timeouts) on resources [AL]
1653 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
1655 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
1656 the needed support (timeouts) [AL]
1659 * Implement measurement sockets. You can now get the bandwidth between two
1660 hosts thanks to AMOK (see below). [MQ]
1661 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
1662 dynar over the network (yeah) [MQ]
1663 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
1664 * simple/static token-ring example. [Alexandre Colucci and MQ]
1665 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
1666 in place before [MQ]
1669 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
1670 type parsing. "short" and "long" modifiers were also ignored; other
1671 modifier (such as reference level) are still ignored. [MQ]
1672 * Embeed the buffer size within the buffer itself on SG. [MQ]
1673 That way, send() are atomic and cannot get intermixed anymore (at least
1674 the ones which are less than 100k; bigger messages still have the issue)
1675 * Array size pushed by the field, not by the field type (or each
1676 and every long int will push stuff to the cbps) [MQ]
1677 * use select() to sleep since it allows to portably sleep less than one
1680 GRAS (minor cleanups)
1681 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
1684 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
1685 * type category 'ignored' killed as it was never used and were difficult
1687 * whether a type can cycle or not is now a flag, leaving room for more
1688 flags (as "ignored", if we feel the need one day ;)
1689 * Rename raw sockets to measurement sockets since "raw" has another
1690 meaning in networking community.
1693 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
1694 and offers features not belonging to GRAS but that most applications
1695 need. One day, it may be a set of plugins loadable at runtime.
1696 * New module: bandwidth
1697 bandwidth measurement between arbitrary nodes running this module. [MQ]
1699 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
1701 SimGrid (2.94) unstable; urgency=low
1703 The first beta release of SimGrid 3 !
1707 * Update the main page and the FAQ. Adding references to gforge.
1710 * Add a gras_os_getpid function.
1713 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
1714 * Extend the logs so that they also print PID, hostname, date, ... if
1716 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
1717 and kill the old version which were in testsuite/
1718 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
1722 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
1723 for users. Instead, each programming environment (GRAS, MSG,...) use it
1724 when needed to provide such a feature to users.
1725 Don't shortcut the mecanism or you will also shortcut the virtualization
1726 you need on the simulator.
1730 * Cleanups in configury with regard to compile optimization/warning flags.
1731 Also add -fno-loop-optimize to any powerpc since it's the optimization
1732 killing gcc (< 3.4.0).
1733 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
1734 needed by MSG examples complications
1735 * Borrow configury beautifications from PHP
1738 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
1739 warning (thanks loris for stumbling into this one).
1740 * Bugfix: stop loading private headers (gras_config.h) from the public
1744 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
1745 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
1746 RL would imply a DNS resolver, which is *hard* to do in a portable way
1747 (and therefore delayed).
1748 * Implement a real timer mecanism and use it in timing macros. This allows
1749 to avoid rounding errors and get a 0.000005 sec precision in timing
1750 macros. While I was at it, various cleanups:
1751 - allow to declare more than one timed section per file (fix a stupid bug)
1752 - move some private declaration to the right place
1753 - merge conditional execution and timing macros into emulation module
1754 - document the module
1755 - make sure the module cleanups its mess on gras_exit
1756 * Documentation improvements:
1757 - (new) how to compile applications using GRAS
1758 - (new) emulation support (timing macros)
1760 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
1762 SimGrid (2.93) unstable; urgency=low
1764 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
1767 - Use Paje properly where used. Still to be sanitized properly.
1768 - Portability fix: Add an implementation of the contexts using pthread
1772 - Add xbt_procname(): returns the name of the current process.
1773 Use it to show the current process's name in all logging.
1775 - fix detection of older flex version and the reaction, since we do
1776 depend on modern ones (we use lex_destroy)
1777 - Better separation of SG and RL in the libs: remove all simulation code
1778 from libgras. As a result, this lib is now only 200k when stripped.
1779 Some of the xbt modules may also be duplicated (two sets and such) and
1780 should be cleaned/killed before SG3.
1781 - Insist on using xlC on AIX because of weird problems involving gcc there.
1782 - Cleanup the make remote stuff. This is now done by scripts
1783 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
1784 mainly for our private use, but we're working on changing them to user
1787 - Bugfix: flush the socket on close only if there is some *output*.
1788 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
1790 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
1793 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
1795 SimGrid (2.92) unstable; urgency=low
1797 Alpha 3 on the path to SimGrid 3
1801 - New! First try of benchmarking macros.
1802 - New! First try so that gras_stub_generator generate deployment and
1803 remote compilation helpers.
1805 - Bugfix: Initialization fix in msg_test.
1809 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
1811 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
1813 - API Change: gras_os_sleep to take the amount of seconds as a double.
1814 Accepting an int was error prone since it was the only location where
1815 seconds were coded as such. It leaded to damn rounding errors.
1816 - Bugfix: Hard to belive that timers ever worked before this.
1818 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
1820 SimGrid (2.91) unstable; urgency=low
1822 Alpha 2 on the path to SimGrid 3
1826 - Bug fix in the lmm_solver.
1828 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
1829 through the function MSG_paje_output.
1830 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
1831 - It is possible to bound the rate of a communication in MSG with
1832 MSG_task_put_bounded() (was already in the previous version but I had forgotten
1833 to write it in the changelog).
1834 - Bug fix to let GRAS run on top of MSG until we move it directly on top
1839 - Various cleanups to the autotools stuff
1840 - Begin to move Gras examples to examples/gras/
1841 - Let make distcheck work again (yeah!)
1843 - documentation overhauled using doxygen.
1844 gtk-doc-tools is dead in SimGrid now.
1845 - Automatically extract all existing logging categories, and add the list
1846 to the documentation (long standing one, to say the less)
1848 - Cleanup the known architecture table. Reorder the entries to group what
1849 should be, and use a more consistent naming scheme.
1850 (some of the test dataset are still to be regenerated)
1851 - New! Allow library to register globals on each process just as userdata
1853 This is implemented using a xbt_dict and not a xbt_set, so we loose the
1854 lookup time (for now).
1855 Use it in msg and trp.
1856 This cleans a lot the internals and helps enforcing privacy of the
1857 headers between the gras components.
1858 - New! Add a timer mechanism, not unlike cron(8) and at(1).
1859 - Bugfix: gras_os_time was delirious in RL.
1860 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
1862 - Reenable GRAS now that it works.
1864 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
1866 SimGrid (2.90) unstable; urgency=low
1868 Alpha 1 on the path to SimGrid 3
1870 * It is a long time since the last release of SimGrid. I'm sorry about
1871 that but as I had told you, I was rewriting a lot of things. I apologize
1872 to those who had been reporting bugs to me and that I had not answered.
1873 If your bug is still in the new version, please tell me. Here is a
1874 summary of the main changes.
1876 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
1877 lead by Martin Quinson. As a consequence SimGrid gains a lot in
1878 portability, speed, and a lot more but you'll figure it out later.
1879 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
1880 I wanted to release the new MSG as soon as possible and I have
1881 broken GRAS, which is the reason why, for now, only MSG is fully
1882 functional. A laconic description of these projects is available
1883 in the documentation.
1885 * REVOLUTION 2: I have removed SG and I am now using a new simulation
1886 kernel optimized for our needs (called SURF but only the developers
1887 should use it). Hence, MSG is now roughly 30 times faster and I think
1888 that by rewriting a little bit MSG, I could event speed it up a little
1889 bit more. Beside the gain in speed, it is also much easier to encode a
1890 new platform model with SURF than it was with SG. More to come...
1892 * REVOLUTION 3: I have tried to change a little as possible the API of
1893 MSG but a few things really had to disappear. The main differences
1894 with the previous version are :
1895 1) no more m_links_t and the corresponding functions. Platforms are
1896 directly read from a XML description and cannot be hard-coded
1897 anymore. The same format is used for application deployment
1898 description. The new format is described in the documentation.
1899 Have a look in tools/platform_generation. There is a tiny script
1900 that converts from the old platform format to the new one. Concerning
1901 the application deployment format, parsing the old one is tricky.
1902 I think most of you should however be able to convert your files. If
1903 it is really an issue, I can write a C code that does the conversion.
1905 2) the toolbox tbx does not exist anymore. We now have a library
1906 with much more data-structures but without the hash-tables (we have
1907 dictionaries that are much faster).
1909 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
1911 *****************************************************************************
1912 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
1913 * don't feel like converting the oldies. (Mt) *
1914 *****************************************************************************
1917 Version 2.90: "the long awaited one"
1918 - Finished rewriting and debugging MSG. Rewrote the documentation.
1919 - disable GRAS for now since it needs to be ported to the newest SG
1922 - Finish the port to windows (using mingw32 for cross-compile)
1925 - Main loop and datastructures of SURF. A cpu resource object is
1926 functional. Surf can thus be used to create cpu's with variable
1927 performance on which you can execute some actions.
1929 2004-11-15 Martin Quinson
1930 - Port to ARM. Simply added the alignment and size descriptions. Should
1931 work, but the ARM machines are so slow that I didn't had the opportunity
1932 to 'make check' over there yet.
1934 2004-11-15 Arnaud Legrand
1935 - Trace manager now written. It uses a heap structure and is therefore
1936 expected to be efficient. It may however be speeded up (particularly
1937 when many events occur at the same date) by using red and black
1938 trees. One day maybe...
1939 - Max-min linear system solver written. It uses a sparse matrix
1940 structure taking advantage of its expected use. Most operations are
1941 O(1) and free/calloc are called as few as possible. The computation of
1942 the minimum could however be improved by using a red and black tree
1945 2004-11-03 Arnaud Legrand
1946 - Rename every gras_* function that was in xbt/ to its xbt_
1948 - Add a heap and a doubly-linked list to xbt
1949 - Added a dichotomy to the dictionaries. make check works as well before
1950 so I assume that the patch is correct. I do not know however if things
1951 run effectively faster than before now. :)
1953 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
1954 SimGrid, and the version number is bumped to 2.x
1956 2004-10-29 Martin Quinson
1957 - Introduction of the remote errors.
1958 They are the result of a RMI/RPC on the remote machine.
1959 ErrCodes being scalar values, you can't get the host on which those
1960 errors did happen. Extending the error mechanism as in Gnome is possible.
1961 No idea yet whether it is a good idea.
1963 2004-10-28 Martin Quinson
1964 - Interface revolution: the Starred Structure Eradication.
1965 I used to do typedef struct {} toto_t; and then handle *toto_t.
1966 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
1967 - ???_t is a valid type (builded with typedef)
1968 - s_toto_t is a structure (access to fields with .)
1969 - s_toto is a structure needing 'struct' keyword to be used
1970 - e_toto_t is an enum
1971 - toto_t is an 'object' (struct*)
1973 typedef struct s_toto {} s_toto_t, *toto_t;
1974 typedef enum {} e_toto_t;
1975 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
1976 s_toto_t) is private.
1978 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
1979 so that it can set the variable to NULL. It was so for dicts and sets,
1980 it changed for dynars.
1982 - Fix a bunch of memleaks in dict_remove
1983 - Fix a bug in sg/server_socket opening: it failed all the time.
1985 2004-10-07 Martin Quinson
1986 - Speed up dynar lookup operation a bit.
1988 gras_dynar_get is dead.
1990 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
1991 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
1992 (which gives you the address of the stored data).
1994 gras_dynar_get_as is an helpful macro which allows you to retrieve a
1995 copy of the data using an affectation to do the job and not a memcpy.
1997 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
1998 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
2000 It does not really speedup the dynar test because they are
2001 setting elements all the time (and look them seldom). But the dict does
2002 far more lookup than setting.
2004 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
2006 2004-10-05 Martin Quinson
2007 - Allow to (en/dis)able the cycle detection at run time.
2009 Whether we should check for cycle or not is now a property of each
2010 datatype. When you think there may be some cycle, use datadesc_cycle_set.
2011 datadesc_cycle_unset allow to remove this property when previously set.
2013 Note that the cycle detection is off by default since it impacts the
2014 performance. Watch the data you feed GRAS with ;)
2016 This property is hereditary. Any element embedded in a structure having it
2017 set have it set for the time of this data exchange.
2019 You should set it both on sender and receiver side. If you don't set it on
2020 sender side, it will enter an endless loop. If you forget on receiver
2021 side, the cycles won't be recreated after communication.
2023 - Header reorganization.
2024 Kill gras_private.h, each submodule must load the headers it needs.
2026 2004-10-04 Martin Quinson
2027 - Interface revolution: do not try to survive to malloc failure.
2029 Now, gras_malloc and friends call gras_abort() on failure.
2030 As a conclusion, malloc_error is not a valid error anymore, and all
2031 functions for which it was the only gras_error_t return value are
2032 changed. They now return void, or there result directly.
2033 This simplify the API a lot.
2035 2004-09-29 Martin Quinson
2036 - Re-enable raw sockets.
2037 Created by gras_socket_{client,server}_ext;
2038 Used with gras_raw_{send,recv}
2041 It should allow to kill the last bits of gras first version soon.
2043 This is not completely satisfactory yet (duplicate code with
2044 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
2047 - Simplify transport plugin (internal) interface by not passing any
2048 argument to _server and _client, but embedding them in the socket
2051 2004-09-28 Martin Quinson
2052 - Finish the port to AIX.
2053 autoconf was my problem (segfault within the malloc replacement
2054 function. No idea why)
2056 2004-09-16 Martin Quinson
2057 - Fix some size_t madness on 64bit architectures.
2059 2004-09-08 Martin Quinson
2060 - Reduce the number of system headers loaded, overload some more system
2061 calls (such as malloc to cast the result of the system one, and work
2063 - Fix and reintroduce the config support
2065 2004-09-07 Martin Quinson
2066 - Source code reorganization to allow Arnaud to surf all over there.
2067 - Allow to document the logging categories.
2068 - Remove all uppercase from logging categories and useless cleanup in names.
2070 2004-08-18 Martin Quinson
2071 Version 0.6.2 (protocol not changed; API changed)
2072 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
2073 gras_error_t), and NULL when not found. Functions expecting a msgtype
2074 as argument (msg_wait; msg_send) deal with NULL argument by providing a
2075 hopefully usefull message.
2076 - Portability to prehistoric sparcs again
2078 2004-08-17 Martin Quinson
2079 Version 0.6.1 (protocol not changed; ABI not changed)
2080 - prealloc some buffers to speed things up
2082 2004-08-11 Martin Quinson
2083 Version 0.6 (protocol not changed; ABI expended)
2084 - The parsing macro can deal with the references, provided that you add
2085 the relevant annotations (using GRAS_ANNOTE(size,field_name))
2087 2004-08-09 Martin Quinson
2088 Version 0.5 (protocol not changed; ABI changed)
2089 - Allow to off turn the cycle detection code in data exchange at
2090 compilation time. It should be at run time, but I'm short of time (and
2091 the config stuff is still broken). That way, we keep dict out of the
2092 critical path, which is good because the performance is poor:
2093 - search not dichotomial yet
2094 - dynar give no way to access their content and memcpy everytime
2095 - In composed data description (struct, ref and so on), stop foolness of
2096 keeping the subtype's ID, but store the type itself. This keeps sets out
2097 of the critical path, which is good since they rely on dynar and
2098 dictionnaries. The only loose of that is that we cannot detect the
2099 redeclaration of a structure/union with another content (but I'm not sure
2100 the code detected well this error before anyway). We still can detect
2101 the redefinition discrepancy for the other types.
2102 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
2103 it breaks the code because of type-punning used all over the place).
2104 This breaks on all non-gcc architectures (for now).
2106 All those changes (plus the buffer of last time) allow me to gain 2 order
2107 of magnitude on cruel tests consisting of 800000 array of integers on two
2108 level of a hierarchical structure (200 secondes -> 4 secondes)
2111 - the selector of reference must now return the type it points to, not
2112 the ID of this type.
2114 2004-08-06 Martin Quinson
2115 Version 0.4 (protocol changed; ABI not changed)
2116 - Allow to pass --gras-log argument to processes in simulation mode. Really.
2117 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
2118 - Implement a buffer transport, and use it by default (it relies on tcp in
2119 real life and on sg in simulation).
2120 That's a bit hackish since I had a new field to the structure to store
2121 its data without interfering with the subtype ones. Inheritance
2122 is tricky in C. And that's a kind of reverse inheritance with one class
2123 derivating two classes. Or maybe a game with java interfaces. Anyway,
2124 that's damn hard in C (at least).
2125 Moreover, I got tired while trying to ensure plugin separation and
2126 genericity in SG mode. MSG wants me to do weird things, so let's go for
2127 cruel hacks (temporarily of course ;).
2128 See comment in transport_private.h:71
2129 - do not include all the _interface headers in private but in the files
2130 which really need them (to cut the compilation time when they are
2133 2004-07-26 Martin Quinson
2134 Version 0.3 (protocol not changed; ABI changed)
2135 - Major overhault of the datadesc interface to simplify it:
2136 - shorted the function names:
2137 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
2138 - add a trivial way to push/pop integers into the cbps without malloc.
2139 This allows to make really generic sub_type description, which simply
2140 pop their size of the stack.
2141 - add a function gras_datadesc_ref_pop_arr() which does what users want
2142 most of the time: Declare a dynamic array (which pops its size of the
2143 stack) and declare a reference to it. Poor name, but anyway.
2144 - kill the post-send callback, add a post-receive one
2146 2004-07-23 Martin Quinson
2147 Version 0.2 (protocol changed; ABI changed)
2148 - add some testing for cpbs in the test cases, and fix some more bugs.
2149 This invalidate again the little64 data file, since I cannot regenerate
2151 - remove an awfull optimization in the logging stuff, allowing me to:
2152 - understand it again
2153 - learn gcc how to check that the argument match the provided format
2154 - fix all errors revealed by gcc after that
2155 - internal keys of dict are not \0 terminated. Deal with it properly in
2156 loggings instead of segfaulting when the user want to see the logs :-/
2158 2004-07-22 Martin Quinson
2159 - Fix some stupid bug preventing cbps (callback postit) from working
2161 2004-07-21 Martin Quinson
2162 - Some documentation cleanups
2163 - remove the useless last argument of msgtype_declare
2164 - rename the Virtu functions to fit into the 'os' namespace
2165 - move headers src/include -> src/include/gras/ and stop fooling with
2166 gras -> . symbolic link
2167 - make distcheck is now successful
2169 2004-07-19 Martin Quinson
2171 - Build shared library also
2172 - Install html doc to the right location
2173 - stop removing maintainer files in make clean
2174 - build tests only on make check
2176 2004-07-13 Martin Quinson
2178 - No major issue in previous version => change versionning schema
2179 - Re-enable little64 convertion test now that Abdou kindly regenerated the
2180 corresponding dataset.
2182 2004-07-11 Martin Quinson
2184 - Get it working with any kind of structure (we can compute the padding
2185 bytes remotely for all the architectures I have access to)
2186 - Implement the structure parsing macro (still not quite robust/complete)
2187 - Improvement to the remote testing toysuite
2189 2004-07-10 Martin Quinson
2190 [autoconf mechanism]
2191 - get ride of a bunch of deprecated macros
2192 - actually run the test for two-compliment, not only compile it :-/
2193 - test whether the structures get packed (and bail out if yes. Damn.
2194 Alignment is a serious matter)
2195 - test whether the structures get compacted (but respecting the alignment
2196 constraints of each types)
2197 - test whether the array fields of structures can straddle alignment boundaries
2199 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
2200 (took me 2 hours to find that bug, looking at the wrong place)
2201 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
2202 before sending/receiving and are used to compute the offsets of fields
2203 - Given that padding size depend even on compiler options, keep track of
2204 alignment and aligned_size only for the current architecture. Not a big
2205 deal since we send structure fields one after the other (seems
2207 - Add the datastructure used for IEEE paper by the PBIO guys to the test
2208 program, let it work on linux/gcc/little32. portability todo.
2210 2004-07-08 Martin Quinson
2211 - import and improve remote compilation support from FAST
2212 - make sure make check works on half a dozen of machines out there
2214 2004-07-07 Martin Quinson
2215 Let's say it's version 0.0.3 ;)
2216 - Implement conversions (yuhu!)
2217 - Let it work on solaris (beside conversion, of course)
2218 - Stupid me, using rand() to generate the conversion datatests in not wise.
2220 2004-07-06 Martin Quinson
2221 - Let make dist work, since I'm gonna need it to compile on remote hosts
2222 - Let Tests/datadesc_usage write the architecture on which the file was
2223 generated as first byte.
2224 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
2225 architecture descriptions.
2226 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
2227 on those architectures.
2228 - Optimization: send/recv array of scalar in one shoot
2230 2004-07-05 Martin Quinson
2231 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
2233 - Plug a whole bunch of memleaks
2234 - each process now have to call gras_{init,exit}. One day, their log
2235 settings will be separated
2236 - Continue the code factorisation between SG, RL and common in Transport.
2238 2004-07-04 Martin Quinson
2240 - Redistribution between SG and RL.
2241 We wanna have to accept in SG, so move accepted related parts of RL in
2242 the common part. (more precisely, the dynar of all known sockets is no
2243 more a static in transport.c, but part of the process_data)
2245 [gras_stub_generator]
2246 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
2248 2004-07-03 Martin Quinson
2249 - Create a new log channel tbx containing dict, set, log, dynar (to shut
2250 them all up in one shot)
2252 - Fix the ugly case of reference to dynamic array.
2253 - New (semi-public) function gras_datadesc_size to allow the messaging
2254 layer to malloc the needed space for the buffer.
2256 - gras_socket_close now expect the socket to close (and not its address to
2257 put NULL in it after it). This is because the socket passed to handlers
2258 is one of their argument (=> not writable).
2260 - propagate the interface cleanup from last week in datadesc, ie remove a
2261 superfluous level of indirection. User pass adress of variable
2262 containing data (both when sending and receiving), and not of a variable
2263 being a pointer to the data. Let's say that I like it better ;)
2264 The price for that is constructs like "int msg=*(int*)payload" in
2265 handlers, but it's a fine price, IMHO.
2267 - Let it work in RL (yuhu)
2269 2004-06-21 Martin Quinson
2271 - porting SG plugin and SG select to new standards (works almost).
2272 - plug memleaks and fix bugs around.
2275 - cleanup the prototype of data recv and force users to specify when they
2276 want to handle references to objects. Test case working even for cycles.
2277 - plug memleaks. Valgrind is perfectly ok with this.
2279 2004-06-12 Martin Quinson
2281 - cleanup the separation between plugin and main code in plugin creation
2283 2004-06-11 Martin Quinson
2285 - Reput hook for raw sockets, needed for BW experiments
2286 - kill a few lines of dead code
2287 [Data description] Interface cleanup
2288 - gras_datadesc_by_name returns the searched type or NULL.
2289 That way, no variable is needed to use a type desc once, which makes
2291 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
2292 two parameters were strings (field name, type name), leading to
2294 [Dicos] Interface cleanup
2295 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
2296 This is consistant with the dynar API.
2298 2004-04-21 Martin Quinson
2300 - Porting to new standards.
2302 - interface cleanup.
2303 There is no bag anymore, no need to take extra provision to mask the
2304 pointers behind "ID".
2305 Better splitup of functions between files create/exchange/convert.
2306 This is still a bit artificial since convert and receive are so
2307 interleaved, but anyway.
2309 - add a queued message list to procdata (the ones not matching criteria
2311 - factorize some more code between SG and RL wrt procdata
2313 - use gras_exit in example to track memleaks
2314 - get rid of gs_example now that GS is properly integrated into gras
2315 - update run_test to integrate the lastest tests (datadesc)
2317 - rename WARNINGn macros to WARNn since it prooved error-prone
2319 2004-04-19 Martin Quinson
2321 - register init/exit functions within gras module mechanism
2322 - send/receive function.
2323 Convertion is not implemented, but short-cutted if not needed.
2324 struct/array elements are sent one by one (instead of block-wise), but
2325 nobody really cares (yet). Get a prototype before optimizing.
2326 - tests (using a file socket) for DD send/receive on:
2327 - base types: int, float
2328 - array: fixed size, string (ie ref to dynamic string)
2329 - structure: homogeneous, heterogeneous
2330 - chained list, graph with cycle
2331 Believe it or not, valgrind is not too unhappy with the results. The
2332 cycle happily segfaults, but the others are ok. And I'm sick of pointers
2336 - Bugfix when using a filename explicitely (instead of '-')
2338 2004-04-09 Martin Quinson
2340 - factorize more code between RL and SG in socket creation
2341 - Complete the implementation and tests of:
2343 o file (only in RL, and mainly for debugging)
2345 I lost 3 days to design a portable address resolver, and then decided
2346 that the prototype mainly have to run on my box.
2347 Addressing portability too early may be like optimizing too early :-/
2349 - use gras_init in the Tests instead of the crappy parse_log_opt
2350 (the latter function is removed)
2351 [Conditional execution]
2352 - New functions: gras_if_RL/gras_if_SG (basic support for this)
2353 [Code reorganisation]
2354 - Get rid of libgrasutils.a since it makes more trouble than it solves.
2355 Build examples against the RL library, since there is no way to disable
2356 its creation for now.
2358 For information, the beginning of coding on GRAS was back in june
2359 2003. I guess that every line has been rewritten at least twice since