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
8 * Enable tracing by default. This modules rocks you should use it.
11 * Add an experimental interface to manipulate VMs. They are mainly
12 process groups with very few intrinsic semantic, but they should
13 allow you to build the semantic you want easily.
14 * New function: MSG_host_set_property_value()
15 * Deprecate functions MSG_global_init() / MSG_global_init_args()
16 Please use MSG_init() instead. (reducing the amount of entry
17 points in the library helps us).
18 * Make it impossible to link against the wrong version of the lib
21 * Bug fixes around the resource failures: don't let the processes
22 survive the host they are running onto
25 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
26 parallel task whose initial work is distributed among host according
27 to the Amdahl's law. Such tasks are created with a parameter alpha
28 that corresponds to the non-parallelizable part of the computation.
29 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
30 between two sets of workstations assuming a 1D block distribution (each
31 workstation owns a similar share of data) on both sides.
33 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
34 Data redistribution will be automatically scheduled once parent and child
35 are both scheduled. The filling of computation_amount and
36 communication_amount structures is now done seamlessly thanks to the chosen
38 * New function SD_workstation_dump to display various information
41 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
42 and renamed to xbt_str_hash() and xbt_str_ext()._
44 -- $date Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
46 SimGrid (3.7.1) stable; urgency=low
49 * Restore the prototype of MSG_process_create_with_environment() to
50 the pre-3.7 situation by removing the kill_time argument.
51 * Add a MSG_process_set_kill_time() function instead.
54 * Fix weird behaviors when dealing with parallel tasks.
57 * Simgrid is now built as a dll.
58 * Simgrid-java now works on Windows.
59 * Simgrid-Java is now included into Windows package.
62 * First pre-build package for MacOSX.
65 * Fix compilation when using MSG_USE_DEPRECATED.
66 * Fix some compilation issues on Macs and Windows.
67 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
68 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
70 We discovered that the Lua console is broken, but we are missing the
71 manpower to fix it right now. The problem existed in 3.7 too, so we
72 are not blocking the release for that. Sorry if you depended on this
73 feature, any help would be really welcome.
75 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
77 SimGrid (3.7) stable; urgency=low
79 The "spring cleanups (before the next Big Project kicks in)" release.
82 * We can specify the SMPI latency/bandwidth factor with command line
83 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
84 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
85 You can also use the "config tag" from platform file by adding this line
86 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
87 (see "example/platforms/tag_config.xml" to use "config tag").
88 Note that the command line supersedes the platform file configuration.
89 * Change the correction factors used in LMM model, according to
90 the latest experiments described in INRIA RR-7821.
91 Accuracy should be improved this way.
92 * Use the partial invalidation optimization by default for the
93 network too. Should produce the exact same results, only faster.
94 * Major cleanup in surf to merge models and split some optimization
95 mechanisms from the core of the models. As a result you can now
96 specify which model to use (e.g., --cfg=network/model:LV08
97 --cfg=cpu/model:Cas01) and which optimization mode to use
98 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
99 Incompatible combinations should err at initialization. See
100 --help-models for the list of all models and optimization modes.
101 * The CLM03 workstation model was dropped for simplicity because it
102 used the deprecated CM02 network model. Use default instead.
103 * Rename the TCP_gamma configuration option to network/TCP_gamma
104 * Rename the coordinates configuration option to
105 network/coordinates, and document it
106 * Use now crosstraffic keyword instead of the terribly misleading
107 fullduplex keyword. It is activated by default now in the current
108 default model, use --cfg=network/crosstraffic:0 to turn it off.
109 * Ongoing refactoring the model parsing to make XML files optional
110 See include/simgrid/platf.h for details (still to be completed)
113 * Major overhaul of the documentation. Almost instructive now :/
114 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
115 functions and friends. This interface was considered as
116 deprecated since over 2 years, it's time to inform our users that it is.
117 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
118 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
119 use these (crappy) functions in your code.
120 These functions will be removed soon. Stop using them now.
121 * Deprecate MSG_get_host_{table,number}
122 Implement MSG_hosts_as_dynar() instead.
123 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
124 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
127 * Stabilize the parallel execution mode of user contexts
128 * Introduce configuration variables to control parallel execution:
129 - contexts/synchro: Synchronization mode to use when running
130 contexts in parallel (either futex, posix or busy_wait)
131 - contexts/parallel_threshold: Minimal number of user contexts
132 that must be part of a scheduling round to switch to parallel
133 execution mode (raw contexts only)
134 * Fix bugs that prevented to use suspend/resume along with
135 synchronization structures.
136 * Fix bugs in process termination that lead to invalid memory access
137 in very specific conditions.
140 * Introduce a parallel mode for the models (controlled by surf/nthreads
141 configuration item). In our tests, running the models in parallel
142 never lead to any speedups because they are so fast that the gain
143 of computing each model in parallel does not amortizes the
144 synchronization costs, even when ultra fast futexes are used.
145 This is released anyway because YMMV.
148 * Performance boost by using a swag internally to compute the set of
149 tasks that are finished and should constitute the return value of
153 * Enable it by default now that it is considered rather stable.
156 * Documentation of the tracing functions.
157 * Performance gains when tracing categorized/uncategorized resource
158 utilization by avoiding calls to get route when updating resource
159 variables. LMM constraints are being used instead.
160 * API changed to set task categories. Use MSG_task_set_category instead
161 of TRACE_msg_set_task_category, and SD_task_set_category instead
162 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
163 * Bugfix for graphicator, routes not correctly obtained, memory leaks
164 * Examples for link user variables added (see at examples/msg/tracing/)
165 * Deprecated function TRACE_msg_set_process_category completely removed
166 * Trace header updated according to the latest Paje file format
167 * Tracing network lazy updates, no longer obligate users to use full updates
168 * --cfg=tracing/platform:1 also registers power/bandwidth variables
169 * Experimental: let user code declare/set/push/pop application states for hosts
170 * API changed to allow the manual creation of graph configuration files
171 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
174 * Improve the API of Lua MSG bindings, using the Lua spirit.
175 * Each simulated process now lives in its own Lua world (globals are
176 automatically duplicated). It helps writing simulators. Will allow
177 to run Splay programs within SimGrid in the future.
178 * Add a Chord example in Lua, equivalent to the MSG one.
181 * Start the implementation of a solution to express temporal
182 properties, not only local assertions. This is still an
183 experimental work in progress, stay clear from it to be safe.
187 - Add new runtime parameters --help-logs and --help-log-categories
188 to display informations about supported logging parameters and
190 - Old deprecated parameters --{gras,surf,msg.simix,xbt}-log=...
191 don't exists anymore.
192 * Mallocators: allow value NULL for the reset function.
194 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
195 create homogeneous dictionaries, where all the elements share the
196 same free function. Non homogeneous dictionaries will be
197 deprecated in the next release.
198 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
199 - Multi-level dictionaries are deprecated.
201 - new function xbt_dynar_search_or_negative() that is useful when
202 you have less than 2 million elements in your dynar and don't
203 want of the extra complexity of catching exceptions when the
204 element is not found.
206 - Make xbt_os_thread module (for thread portability) public.
207 Documentation is still to come, sorry.
209 - Cleanups and simplifications to make it maintainable again.
210 - Exotic features (such as memalign and valloc) were removed.
211 - The metadata were extended and improved so that the
212 model-checker becomes able to explore and inspect the heaps.
213 - This may induce a performance drop when enable_model-checking is
214 ON in cmake (even if it's not used in the simulation), but it is
215 necessary at this point to get MC working.
217 Turn model-checking OFF if simulation performance matters to you.
218 Not enabling it at runtime is not enough, disable it in cmake.
220 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
222 SimGrid (3.6.2) stable; urgency=low
224 The "Not coding new stuff allows to polish old things" release.
227 * New bindings to the NS3 packet level simulator (experimental)
228 * Use the raw (efficient) execution contexts instead of the sysv
229 (portable) ones when possible.
230 * libpcre is now mandatory in any cases since not using it led to
231 severe performance loss and possibly other issues
232 * Update the XML platforms:
233 - G5K: include the latest machine in Nancy
234 - GridPP and LCG: new platforms
235 * Documentation was partially updated, at least (more to come)
237 Bug fixes, cosmetics and small improvements
238 * Free terminated processes before the end of the simulation to avoid
239 exhausting the memory of users having very dynamic amount of
241 * Bug fix and cosmetics about canceling non-running tasks
242 * Bug fix about the dot loader's issues when using libcgraph
245 * Create an installer for windows with nsis (amd64 and win32)
246 - Add an hello world project to illustrate simgrid project creation.
247 - Embed libpcre into the Simgrid installer to avoid
248 its compilation burden
249 * The raw execution contexts should work on Apple now
250 * Port to Windows 64 bits
251 - Sysv contexts now have an implementation for this arch
252 - GRAS communication features now support this arch
253 * Drop support for borland compiler on windows
254 - this code was not maintained, and we kinda depend on gcc nowadays
255 * Fix portability issues on kfreebsd/gnu: build error about semaphores
256 * Fix portability issue on unstable ubuntu: linker became picky on
259 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
261 SimGrid (3.6.1) stable; urgency=low
263 The "Oops, we broke Macs too" release
266 * Fixed contexts detection so that raw ones are used when possible
267 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
268 leads to a strange error, with user code segfaulting sometimes when
269 the generated code is not perfectly aligned (which is not
270 controllable from the user side, depends on the amount of code)
273 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
275 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
277 SimGrid (3.6) stable; urgency=medium
279 The Summer Release, also known as the "OMG! They Killed Kenny!" version
282 * Bindings now constitute their own package, separated from the main one.
283 Rationale: reduce our maintenance nightmare by reducing the module coupling
284 They will soon be released on their own on gforge.
286 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
287 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
289 GRAS: It is not considered as stable anymore, but experimental. Sorry.
290 * It's not quite deprecated for now because we have no replacement,
291 but it may soon become the case.
294 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
295 * Fortran: New user-level cache variable to store the rank of the running
296 process. This improves performance by an order of magnitude.
297 * C: New coccinelle script to automatically locate and modify global and
298 local static variables.
299 * Improved SMPI network model with a sender-side gap to account for multiple
303 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
304 only say if a communication is finished, no matter whether it succeeded or
305 failed. You can call MSG_comm_get_status() to know the status of a finished
307 * New function MSG_task_dsend() to send a task and detach it. When a
308 communication is detached, you are never notified of its success or failure
309 and the memory is released automatically once it is finished. This function
310 is useful when you don't care about the end nor the success of a
312 * Change the prototypes of action replay. Sorry for inconvenience,
313 but this is really more efficient this way (and to adapt your code,
314 you just have to fix the initialization, that shouldn't be too long)
315 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
316 ever managed to do anything useful with it.
317 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
318 takes a dynar of communications. It returns immediately and gives the
319 index of a finished communication (if any).
320 * New example: a basic implementation of the Chord P2P algorithm.
323 * New model for multi-core CPUs. You can now use the core attribute to
324 precise the number of cores of a host. This is a basic model. Every
325 process running on the host receives at most the power provided in
326 the DTD (throughput<=power). Total throughput of process cannot exceed
328 * New peer tag. This peer tag creates a tiny AS comprising a host and a
329 router linked by an up-link and a down-link (possibly asymmetrical).
330 This kind of pattern allows to easily build last-mile model style platforms.
331 Aggregating such patterns in a rule-based AS is thus the technique of
332 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
333 * New model for Vivaldi routing. We transformed the Vivaldi network model
334 into a Vivaldi routing model (based on the rule-based model). This allows to
335 combine Vivaldi based latencies with last-mile platforms.
338 * Added a check for NaN of IEEE754 infinite in the double entries of
340 * Introduce a new context factory "raw", highly inspirated from the
341 ucontext factory, but using manually crafted functions in assembly to
342 do the work in an efficient manner.
343 * Allow to change the used context factory at run time, not only at
344 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
345 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
346 contexts at runtime (only with raw contexts or ucontexts).
347 * Completely rewrote this module to allow parallel execution of user
348 processes. Use --cfg=contexts/nthreads:N to execute user processes
349 with N parallel threads (the default is 1, meaning no parallelism).
350 * Allow to decide dynamically between sequential and parallel modes.
351 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
352 processes in parallel only when their number is greater than or equal to P
354 * Added a check for NaN of IEEE754 infinite in the double entries of
358 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
359 won't output the state of processes when interrupted with Ctrl-C
360 * Add a new function xbt_dynar_to_array that transforms a dynar into a
361 NULL-terminated array. This may solve backward compatibility issues
362 due to the change to return type of SD_simulate. See also:
363 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
364 * Add new macros with variable number of arguments.
365 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
366 - in xbt/asserts.h: xbt_assert
367 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
368 - in xbt/ex.h: THROWF and RETHROWF.
369 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
371 * Change xbt_die() to accept a format string with arguments, just like printf.
372 * New data structure: xbt_lib_t, like a dict but more general and with better
376 * New configuration options
377 Options triva/categorized and triva/uncategorized can be used to generate
378 graph configuration files for Triva visualization tool.
379 * Configuration option tracing/platform is renamed to tracing/categorized
380 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
381 * New TRACE_user_link_variable interface:
382 User provides the name of the link and the tracing variable to attach to it
383 * the declaration of tracing categories must be done after the environment
385 * simpler tracing interface, just one way to declare categories
386 TRACE_category or TRACE_category_with_color, it is up to you
387 * links in the trace file are again identified by their names
388 * trace contains the full platform hierarchy exactly as declared using the ASes
389 * Options tracing/msg/[task|process]:1 groups the process by hosts
390 for both cases, tasks and processes must have names that are unique during the simulation
391 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
392 * The experimental option tracing/msg/volume is deprecated
393 its functionality may be reincorporated if needed
395 The tracing generates a trace file with unordered timestamped events,
396 because of the way the core simulator (surf) works. A script available
397 at the tools directory (fix-paje-trace.sh) can be used to put the events
398 in order. We have changed the tracing so it can generate ordered timestamped
399 events in the final trace, but depending on the simulator (and how much time
400 is simulated) that can lead to a huge memory utilization. It is deactivated
401 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
404 * Define a SIMGRID_VERSION macro in simgrid_config.h.
405 - We are trying hard to keep the API stable, but it may happen that
406 some things change (we're a research project after all, not a
407 nuclear plant operating system). If such things should happen, you
408 could rely on that macro to adapt.
409 - current value: 30600 for 3.06.00, aka 3.6
410 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
411 a number that can be compared with SIMGRID_VERSION.
412 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
413 assertions and verbose/debug logging events are disabled at compile time.
415 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
417 SimGrid (3.5) stable; urgency=medium
420 * New feature to any SimGrid-based simulator: Model-Checking
421 Check SIN#1 for more details.
424 * New Model SMPI (three-interval linear regression for correction factors)
425 See RR-7426, available at http://hal.inria.fr/inria-00527150
426 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
427 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
428 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
429 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
430 * See also src/smpi/README
435 - Tracing API changes: TRACE_start and TRACE_end should not be called
436 by user-code. They are automatically called by simulators created
437 with SimDAG, MSG and SMPI if the toolkit is compiled with
438 tracing_enabled=ON. Categories declaration and utilization remain the
439 same for MSG and SimDag.
440 - A function was added to the tracing API to declare categories with
442 - TRACE_category_with_color (char *category, char *color)
443 where color must be in the following format
444 "%f %f %f", red, green, blue
445 and red, green, blue are float values in the interval [0, 1]
446 - User can specify NULL as color parameter, or continue calling
448 On that case, the tracing system will define random colors
449 - The following command-line options are supported:
450 --cfg=tracing/filename:msg.trace
451 --cfg=tracing:1 (activate tracing, needed to use others)
452 --cfg=tracing/platform:1 (categorized resource use)
453 --cfg=tracing/uncategorized:1 (uncategorized resource use)
454 --cfg=tracing/msg/task:1 (task creation)
455 --cfg=tracing/msg/process:1 (process creation, migration)
456 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
457 --cfg=tracing/smpi:1 (SMPI interface tracing)
458 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
459 - examples of examples/msg/tracing updated
461 - DAXLoader and DOTLoader functions can generate tasks with categories
462 - A new function to attribute a category to SD tasks:
463 TRACE_sd_set_task_category (SD_task_t task, char *category)
464 * Tracing the MPI interface implemented by SMPI
465 - Collective operations are traced with states
466 - Point-to-Point operations are traced with states/links
467 - Tracing activated by a parameter "-trace filename" passed
468 to smpirun during execution (considering that simgrid
469 is compiled with tracing enabled)
470 - To run the simulation with gdb, the simulator
471 accepts --cfg=tracing/smpi:1 to trace SMPI
472 - tesh files to check if smpi tracing is ok
473 - See examples/smpi/NAS/DT-trace
474 * GTNetS tracing re-worked
475 - adaptation to the tracing system of GTNets to cope
476 with modifications regarding the fullduplex mode
477 - new tesh files to check if gtnets tracing is ok
480 * Asynchronous communications through the functions:
481 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
482 * New function: MSG_load_platform_script()
483 to make possible using a lua script instead of XML files to set up platforms
484 * New function: MSG_set_function
485 to associate functions to processes, used when bypassing the parser
486 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
488 Platforms: Add some more examples in examples/platforms
489 * Grid'5000: see www.grid5000.fr
490 * *_30000_hosts.xml: various huge files [mainly scalability testing]
493 * Change the XML format. This is a very important modification. SimGrid
494 3.5 introduces a new hierarchical format based on the notion of
495 Autonomous Systems. Compatibility with old format is ensured
496 through the perl script provided in the install bin directory
497 bin/simgrid_update_xml.
498 It is now possible to build platforms with specific routing
499 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
500 connect several platforms together. We will try to provide soon
501 set of realistic platforms exploiting these properties (have a
502 look at examples/platforms/ for the moment).
503 * Take the opportunity of the XML format change to be a good XML citizen:
504 rename link:ctn to link_ctn and similar changes (also dealt with by
506 * Add a new routing scheme (rule-based) using regular expressions. It
507 enables to have an extremely low memory footprint when the
508 underlying routing is simple and can be compactly described. You
509 need to have libpcre4-dev (perl regular expressions) installed if
510 you want to use this routing scheme.
511 * Revive the cluster TAG and allow to easily and efficiently (both in
512 term of memory and speed) connect clusters together. Have a look
513 at teshsuite/simdag/platforms/ to see how this can be done. With
514 this tag, you can create clusters with thousands of tasks at no
515 cost (have a look at examples/platforms/).
516 Note: clusters are implemented as ASes, so there is no need for an
517 enclosing AS tag if you have only one cluster in your platform.
518 * Add new generic functions in the public interface that allows the user
519 to call SURF 'create_resource' methods from your code (same
520 functionality as the XML bypass mechanism but with a much lighter
522 * Add a new model (enabled through command line --cfg=network/model:SMPI)
523 that uses a piecewise linear approximation to produce better
524 results when exchanging small messages.
525 * Add a new parameter to handle correctly full duplex link and account
526 for interferences between uplink and downlink communications
527 (activate with --cfg=fullduplex:1).
530 * Rename the SD_READY (all dependencies are satisfied and task is
531 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
532 dependencies are satisfied) state.
533 This prevents a confusion between the notion of "ready to schedule"
534 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
535 simulated" (SD_RUNNABLE) used by the simulation kernel.
536 * Change the way a task is considered as ready. Instead of removing
537 dependencies when a task is done, a counter is decreased. This way,
538 it is always possible to reach ancestors thanks to the
539 SD_taks_get_parents function (even after the end of the simulation.)
540 * Change the return type of SD_Simulate from (SD_task_t*) into
541 xbt_dynar_t. This function was in handling a dynar internally and
542 converted it into a NULL terminated array for historical reasons.
543 * New function SD_dotload(char*) to load a DAG described in dot
544 format. This loader and the corresponding examples require the
545 installation of the graphviz library.
546 * Fix a bug in the management of tasks of size 0 in the surf network
547 models. This problem was only visible with SIMDAG and you should
548 thus disregard results produced with earlier versions if you
549 relied on this feature (some tasks were blocked because of this).
550 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
551 even though your applications were doing only point-to-point
552 communications and sequential computations. Now you can really use any
553 model you want (of course, if you create real parallel tasks, which are
554 not implemented in most models beside ptaskL07, this will abort).
555 * Add an example that schedules a DAX on an heterogeneous platform
556 using a Min-Min strategy.
557 * New function SD_workstation_get_current_task() that returns the kind
558 of task currently running on a workstation in the sequential access
560 * Raise some warnings when unexecuted tasks remains at the end of the
561 simulation. This is usually caused by cycles in the DAG.
564 * New function: SIMIX_process_set_function() called by MSG_set_function
565 * Change the underlying waiting queue in semaphores so that a process
566 can wait on several of them simultaneously (as in waitany).
567 * Fix the way to handle tokens in semaphores so that all access patterns
568 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
569 * kill the dirty pimple SIMIX_message_sizes_output()
570 Please use (proper) visualization instead
573 * New data container: setset (set of sets of elements)
574 * New module: mmalloc (mapped malloc, allowing to have several
575 independent segments of malloc)
576 * New function: xbt_dict_cursor_set_data()
577 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
578 * New function: xbt_dynar_is_empty()
579 * New function: xbt_fifo_get_last_item()
580 * Fix xbt_dynar_shrink(): use the right element size.
581 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
582 uninitialized areas during expand.
583 * Fix semaphores: previous implementation was severely broken.
584 * Use library init/fini functions for our initialization.
585 - you can use logs and other feature as soon as you want in your
586 code (even before the xbt_init / MSG_init)
587 - xbt_exit is now a no-op and produce a warning when used.
590 * Port GRAS to new SIMIX mechanisms. This allows gras users to
591 benefit from the latest improvement to the simulation kernel.
592 * Kill measurement sockets for now. If you rely on them, sorry. This
593 release is not for you. This feature will be reintroduced in the
594 future, but we cannot delay the release any further.
595 * New function: gras_msgtype_get_name().
596 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
597 * Fix (at last) the pmm example: it should not randomly fail anymore.
599 Build chain: bug fixes and overall polishing
600 * Cmake is now stable enough. Hence, we killed the autotools.
601 * Port to windows ( TM :)
602 * Fix the 'make install' target.
603 No need to use 'make install-simgrid' anymore
604 * Introduce a 'make dist' target compiling a *source* archive
605 'make package' compiles a binary archive
606 * Compile java files only on need
607 * Add --cd and --setenv command line options to tesh
608 * Out of source builds are not fully supported yet, but we are close
609 * Enable supernovae and optimization flags by default for our users
612 * Add layer to set up environment directly from lua, without XML.
613 * The effect of gras_stub_generator can be achieved through
614 lua too (check examples/gras/console/ping_generator.lua)
616 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
618 SimGrid (3.4.1) stable; urgency=low
620 The "Polishing easter eggs is probably a good idea" release.
621 This is a bug fixes release only.
625 * Fix a bug preventing the tasks from begin garbage collected.
628 * Fix a bug occuring when a host involved in a communication fails.
629 This was not detected properly by the other peer involved in the
630 communication. Now, it's reported as a network error.
633 * Warn the user about loop dependencies in data flow of DAX files
634 * Obey the control-flow dependencies of DAX files
637 * Add option "enable_smpi" allowing to not compile SMPI.
638 Probably useful for the (Mac) users experiencing a build error here
639 * Improve the detection of lua5.1 and ruby1.8
641 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
643 SimGrid (3.4) stable; urgency=low
645 The "Easter in Cargese" release. Also known as (major changes):
647 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
648 ~> bindings were greatly improved
649 ~> new tracing infrastructure for better visualization introduced
651 * the "Welcome to configury modernity" release.
652 ~> we switched from autotools to cmake, and improved our cdash
655 A more detailled list of changes follow (full detail in svn log).
657 Java Bindings: Various Cleanups
658 * (install java-gcj-compat-dev on debian-like to use them)
659 * Remove put/get: no need to export deprecated interface in Java
660 Use send/receive instead.
661 * Cleanup the examples and add a README per directory
662 * Remove example autoDestination (that's the only way to go now)
663 * Remove example explicitDestination (was a plain copy of basic)
664 * Make JniException a runtime exception, so that there is no need to
665 declare the fact that you may encounter such a beast. I guess that
666 nobody will ever want to survive such error.
667 * Create specific errors for each MSG case of failure:
668 host failure, transfer failure, timeout, task cancelled
669 * Cleanup the exceptions that may get thrown by each function
670 * Other internal cleanups in Java bindings. Performance still bad :/
671 Ruby and Lua Bindings: create them
672 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
673 * That's new and great, you should try them out.
674 Same functionalities than Java bindings, only even less polished
676 * Kill the useless "rate" argument of SD_task_get_execution_time()
677 Everyone used to provide -1 as a value, it was not used, and the
678 semantic of a possible use wasn't even clear.
679 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
680 either as comm costs or compute costs to mean that there is no
681 such thing for that specific task.
682 * Add a SD_task_set_name() function
683 * Fix SD_task_unschedule() on typed tasks
684 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
685 * In DAX loader, accept useless 'level' attributes to <job> since
686 LIGO DAGs have them (seem to be to ease graphical representation).
688 * Add an example masterslave_mailbox.c using send/receive and not
689 the deprecated put/get interface.
690 * Kill the MSG_paje_output() function. It's a noop since 2 years.
691 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
693 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
694 (declare MSG_USE_DEPRECATED to still have the old name)
695 * Add a MSG_task_set_data() function
696 * About trace replay (see examples/msg/actions):
698 - Allow to work with splitted trace files for each process
699 Give the specific trace file as argument of each process,
700 and call MSG_action_trace_run(NULL)
701 You can still have one merged file for all processes.
702 - Fix implementation of collective operations
703 * Allow task_execute() on 0-sized tasks (closes #10063)
705 * This is the first release of SimGrid where SMPI is not considered
706 beta anymore (even if some corners should still be improved)
707 * Port over the new SIMIX_network submodule (internal refactoring)
708 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
709 * Implement more missing elements of the standard:
711 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
713 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
714 MPI_Scan() MPI_Get_processor_name()
715 - Added implementation of missing case for Alltoall (warning: it's
716 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
717 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
718 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
719 SMPI_MPI_Allgatherv()
721 - MPI_Waitsome() was broken
722 - Allow relative includes in smpicc
723 - Command line cfg argument 'reference_speed' was ignored...
724 - Some functions did not properly lead to auto-benching of user code
725 - smpicc passes -O2 by default (just like openmpi one)
727 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
728 * Bug fixes about timeouts during communications
729 * add SIMIX_message_sizes_output() as a pimple to write to file the
730 amount of messages per size. Use gnuplot to get histogram.
731 Pimple because that's the only user-visible function of simix,
732 defined directly in xbt.h (irk, sorry)
734 - Add a SIMIX_sem_get_capacity() function
735 - Fix interactions with processe resume/suspende
736 - release_forever() was stupidly broken
737 - Fix SIMIX_display_process_status() for processes in a semaphore
738 - Make SIMIX_sem_block_onto() user-visible
739 * Refactoring context stuff:
740 - Use pseudo-OOP for better modularity
741 - reimplement SIMIX_process_kill() without process_schedule() so
742 that the latter can take as invariant that it is called from
744 - Merge context_start into context_new for sake of simplicity
746 * Add a Vivaldi network model, coded live during SUD'10 ;)
747 * Rename configuration variables to start a hierarchy:
748 o cpu_model -> cpu/model
749 o network_model -> network/model
750 o workstation_model -> workstation/model
751 * New configuration variables:
752 o network/bandwidth_factor: correction to bandwith
753 o network/latency_factor: correction to latency
754 o netwotk/weight_S: correction to the weight of competing streams
755 * Add a long description to the models, that users can see with such
756 argument on the command line: --cfg=cpu/model:help
757 * --help-models display the long description of all known models
759 * config: add the ability to set a default value after registration
760 Does not override any previously set value (e.g. from cmd line)
761 * dict: allow to have integer key and data.
762 When so, you need to use the following functions
763 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
764 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
765 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
766 In contrary to regular dicts, the key is not malloced before copy.
767 Mixing scalar and regular elements in the same dict is not tested
769 * Allow to use xbt_dynar_shrink() to expend the dynar instead
770 Tracing for Visualization:
771 * SimGrid is now instrumented in order to generate a trace file for
772 visualization analysis: to use it, need to compile SimGrid with the
773 "tracing" option enabled, and instrument the program using SimGrid with
774 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
775 (among other functions).
776 * The instrumentation only traces the platform utilization for now
777 * Documentation to use the tracing functions and how to analyze the
778 traces with the Triva tool is written.
779 * More information about: SimGrid FAQ (in the section Tracing Simulations
782 * We moved to cmake as default build system. Autotools support will
783 be dropped soon. Check the FAQ for more info about how to use it.
784 * Greatly improved our cdash/ctest interactions
785 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
786 * Added memory checking tests with valgrind; lot of memleak fixing.
787 This may be the first release of simgrid with so few memory issues
788 * Added code coverage tests.
789 Our coverage is still improvable, but at least we see it on cdash.
791 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
793 SimGrid (3.3.4) stable; urgency=low
795 The "Desktop Grid needs love too" release (also called Xmas release).
798 * Major speedup in the maxmin system solving by using lazy evaluation
799 Instead of solving completely the maxmin system at each iteration,
800 only invalidate (and recompute) the modified parts.
801 This new feature is enabled in default models but you can try to
802 turn it on with "--cfg:maxmin-selective-update=1" for other models.
803 * Cas01 IMproved as default CPU model
804 This CPU model is the same Cas01 model, but it uses the
805 maxmin-selective-update flag and a heap structure to manage
806 actions on SURF kernel.
807 It reduces the complexity to find the next action to finish and,
808 consequently, it's faster than the old Cas01.
809 This is the new default CPU model (Cas01).
810 * Rename the old Cas01 model to Cas01_fullupdate
811 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
812 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
813 * CpuTI (CPU Trace Integration)
814 A new CPU model whose objective is simulate faster when using
815 availability trace files.
816 Instead of using a full featured, over engineered maxmin system for
817 CPU modeling, this model does the pre-integration of traces files
818 to calculate the amount of CPU power available, and so, executes
819 faster than the old CPU models.
820 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
821 * Use LV08 as default network model since it gives better accuracy
822 for small messages and shouldn't change things for big ones.
823 Use --cfg=network_model:CM02 to get the previous behavior.
826 ******************************************
827 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
828 ******************************************
829 * The new CPU model may changes simulations!
830 The point is that events occurring at the exact same timestamp
831 are not scheduled in the same order with the old and new
832 version. This may be enough to completely change the execution
833 of simulations in some cases.
834 * The new network model will change simulations!
835 This new model is more realistic than the previous one, so you
836 should consider redoing your old experiments with this model.
837 Sorry for the inconvenience.
840 * Introduce the supernovae compilation mode
841 When compiled that way, the whole SimGrid (or almost) is put in a
842 single compilation unit and compiled in one shoot.
843 This is to help gcc which has difficulties to inline stuff from one
845 The speedup seem to be above 15%, althrough more tests are needed on
846 amd64 to confirm that gain.
849 * Port of MSG's mailbox on top of SIMIX network
850 The put/get mechanism was greatly simplified on the way.
853 * New SIMIX network module. Provides:
854 - Mailbox: rendez-vous mecanism to find with who you want to speak
855 - Synchronous send/recv: easier and hopefully faster since the
856 logic is handled in the maestro process directly now
857 - Asynchronous send/recv: you dreamt of it? It's here now
858 Too bad that nobody cared enough to propagate the change to MSG.
859 * Add semaphores as SIMIX synchronization mechanism.
862 * new function SD_daxload(char*) to load a DAX file
863 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
864 * Introduce typed tasks. Specify its kind and cost at creation.
865 At scheduling, just give where it should be placed, and the cost
866 for each involved resource is automatically computed.
867 Existing constructors so far (more to come of course):
868 - SD_task_create_comm_e2e() for end-to-end communication
869 - SD_task_create_comp_seq() for sequential computation
870 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
871 * new function SD_task_dump() for debuging display
872 * new function SD_task_dotty(task,FILE*) writing to file the info
873 about the task in dotty format
874 * SD_task_dependency_exists() can now cope with having one of its
875 arguments NULL. If so, it tests whether the other argument has any
877 * Add getters on list of preceding/following tasks:
878 SD_task_get_parents(task) and SD_task_get_children(task)
879 * Add getters on amount of workstations and list:
880 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
881 * Add getter on task kind: SD_task_get_kind(task)
882 * Update the start_time and finish_time of tasks on completion/failure
883 * Bugfix: Remove task from state swags when destroyed
886 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
889 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
890 dynar with one separate thread per value of the dynar.
891 * Change the prototype of xbt_thread_create(), sorry.
892 Added a boolean parameter indicating whether we want to join this
893 thread (used in SG only for now)
894 * Implement xbt_thread_join and xbt_thread_yield in SG also.
897 * GTNetS wrappers should now be usable again (and betterly tested too)
898 * Fix a major regression from 3.2 where the timeout provided to
899 MSG_task_put_with_timeout() was used as absolute time before which
900 the comm should be done.
901 * Start to fix the <cluster> tag.
902 - Internal links should be good now (beside of the loopback, which
903 use the private link instead)
904 - paths to the external world is still rather broken
905 - the <route:multi> tag is just broken. Actually that's brain-dead.
906 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
907 to make it less stupid
908 ** Check your platform with teshsuite/simdag/platforms/flatifier **
909 * Fix a source-level compatibility glitch from 3.2: after defining
910 MSG_USE_DEPRECATED, you can use the old name
911 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
912 * Allow to compile from the SVN with automake 1.11
913 * Fix some problems when using the "start_time" tag in deployment XMLs.
914 * Fix #8569: XBT/synchro.h has redundant declarations
915 * Fix #8563: MSG return values and exceptions
916 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
917 * Integrate patch #8636: Obey DESTDIR when installing documentation.
918 Thanks to Robson Peixoto.
919 * Fix a vicious bug in dictionaries inducing that some elements were
920 not freed on xbt_dict_free()
922 Portability report of this version:
923 * Main portability targets:
924 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
926 - mac leopard on i386
927 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
928 but nothing critical.
929 * Other platforms: windows, AIX and others were not tested for this release
931 Timing report of this version:
932 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
933 scenario parameters). From 8h to a few seconds in desktop grid settings.
934 * Supernovae brings about 25% speedup on i386.
936 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
938 SimGrid (3.3.3) stable; urgency=low
940 The "Need for Speed" release.
942 The timings done to validate the 3.3.2 were faulty.
943 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
945 The problem was a conversion from a manually handled vector to
946 xbt_dynar_t on the critical path.
947 xbt_dynar_foreach calls functions, inducing stack management crap.
949 We inlined these functions and xbt_dynar_foreach is now breath taking.
950 We also inlined xbt_swag_belong on the way.
952 Here are some approximate speedup measurements (on master/slaves
953 simulations lasting between 10s and 20s each):
954 3.3.1 -> 3.3.2: about same performance
955 3.3.2 -> 3.3.3: 40% speedup
956 3.3.1 -> 3.3.3: 40% speedup
957 3.3.1 with inline patch -> 3.3.3: 30% speedup
959 Our reading is that the refactoring which occurred in 3.3.2 made us
960 suffer much more from the xbt_dynar_foreach low performance, but
961 once we solved this, this refactoring proved to be very performance
962 effective. From the 40% speedup, somehow, 10% are due to the
963 inlining and 30% to the refactoring.
965 That's a pitty that gcc cannot inline functions placed in other files
966 alone. We have to choose between:
967 - break the encapsulation (by putting private data structures and
968 accessors in headers files to help gcc)
969 - live with low performance
970 - switch to a decent compiler such as icc (not quite possible).
972 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
974 SimGrid (3.3.2) stable; urgency=low
976 The "Simplicity does not preceed complexity, but follows it" release.
978 The main contributors of this release were (lexical order):
979 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
982 * Extract the routing logic into its own object.
983 (was dupplicated in network.c and workstation_LV07.c;
984 Allows to implement other ways of storing that info)
985 => kill now useless network_card concept
986 - Use dynar to represent routes (instead of void** + int*)
987 - kill link_set (use surf_network_model->resource_set instead)
988 - Add a command-line option to choose the routing schema to use
989 - Add three new models:
990 * Floyd (shortest path computed at initialization)
991 * Dijikstra (shortest path recomputed all the time)
992 * Cached Dijikstra (shortest path computed on need)
993 All these models where contributed by Silas De Munck, and are
994 described in his ICCS09 paper.
996 * Simplify model declaration
997 (less redirections, less function to write when defining a model)
998 - Factorize stuff between models:
1001 surf_model_resource_set(model)
1002 surf_model_resource_by_name(model, name)
1003 - Unify the types of models in s_surf_model_t (using an union)
1004 - Embeed fields of common_public directly into s_surf_model_t
1005 - Rename model methods:
1006 action_free ~> action_unref
1007 action_change_state ~> action_state_set
1008 action_get_state ~> action_state_get
1009 - Change model methods into functions :
1010 (model)->common_public->action_use ~> surf_action_ref
1012 * Implement a generic resource; use it as ancestor to specific ones
1013 (allows to kill duplicated code in models)
1014 Drawback: timer command don't need no name nor properties;
1015 workstation_CLM03 don't need no properties
1016 (but I guess we can live with those few bytes wasted)
1018 * Improve the action object model
1019 - implement a constructor avoiding dupplicated code about field
1020 initialization in generic_action part.
1022 * Kill the SDP model: it has an external dependency, is deprecated
1023 in flavor of modern lmm models, and didn't compile since a while
1026 * Relocation of the context module from XBT to SIMIX.
1027 (the context were decoupled from the simix processes, duplicating a lot of code)
1028 => a lot of code was factorized
1029 - less overhead is introduced during scheduling
1030 - simpler API for the context factory
1031 - the logic for process creation,destruction and manipulation was simplified
1032 * Simplification of the s_smx_process_t data structure.
1033 => accesing the simix level data associated to a process is faster now,
1034 and the code is a lot more readable.
1037 * Implement some more MPI primitives:
1038 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
1039 -implementation: Bcast: flat or 2-ary tree (default),
1040 Barrier: 4-ary tree,
1042 Allreduce: Reduce then Bcast
1043 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
1044 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
1045 Alltoallv: flat tree, like ompi
1047 * Add support for optimized collectives (Bcast is now binomial by default)
1048 * Port smpirun and smpicc to OS X
1051 * Kill SD_link_get_properties: hard to maintain and makes very little sense
1052 Shout out if you used it.
1055 * Display the list of still queued messages in SG mode when existing
1059 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
1060 * Add xbt_graph_node_get_outedges() [Silas De Munck]
1061 * Add xbt_str_from_file(FILE*)
1062 * Add xbt_dict_get_key achieving a linear reverse search
1063 * Remove the context module
1065 Portability report of this version:
1066 * Main portability targets:
1067 - Linux(debian)/x86/context
1068 - Linux(debian)/x86/pthreads
1069 - Linux(debian)/amd64/context
1070 - Linux(debian)/amd64/pthreads
1071 On these, we still have the eratic breakages of gras/pmm and
1072 amok/saturate_sg reported in previous version. We still think
1073 that the tests are the cause of the fault, not the tested code.
1075 - Mac OSX Leopard/x86/context
1076 Still false negative in tesh autotesting.
1077 Smpi still fails, but this time because readlink does not accept -f
1078 Everything seems to work properly beside of that.
1081 - AIX version 5.3 (only tested contexts this time)
1082 Smpi still fails there because mktemp is not installed.
1083 Everything seems to work properly beside of that.
1085 I managed to compile it for the first time, but several breakages.
1086 Won't delay the release for this exotic platform.
1088 * Windows: it's still lagging behind. If you want to help, please
1091 Timing report of this version:
1092 This version seem to be more than 5% faster than 3.3.1 (on linux
1093 64bits with contextes). The gain is less than expected, we are
1094 investigating this for next release.
1096 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
1098 SimGrid (3.3.1) stable; urgency=low
1101 * Implement a --cfg-help to show existing configuration variables
1102 * Build chain do not require doxygen in maintainer mode
1105 * fix a bug on struct sizeof computation, which prevented the
1106 exchange of arrays of structs in some conditions
1107 - added a regression test about this in datadesc_usage
1108 * Allow the exchange of 0-long dynamic vectors.
1109 - for that, use -1 as indicator of dynamic size instead of 0
1110 - This implied to change any size from unsigned long to long,
1111 reducing a bit communication abilities, but I guess that with
1112 64bits being quite common, this is more than enough.
1113 - This also induce a protocol change, thus bumping network protocol
1114 version from 0 to 1 (if we have external users, we have to get
1115 clean on that point too ;)
1116 - added two regression tests about this in datadesc_usage
1117 * Be more verbose when propagating local exceptions
1118 This helps debugging.
1119 * Display the status of simulated processes when receiving SIGINT in
1123 * Allow to control the simulation from a trace file.
1124 New functions MSG_action_register() and MSG_action_trace_run()
1125 The first one allows to associate a function execution to each
1126 kind of action while the second one parses a trace file and
1127 triggers the corresponding actions within the system.
1128 For now, only a toy example is provided in examples/msg/actions
1129 * Add an exemple of process migration in examples/msg/migration
1130 * Fix a bug in task exchange which broke MSG_task_get_sender()
1131 Add a teshsuite regression test for that.
1132 [Bug: if MSG_task_get_sender() is called after sender exit,
1134 * Fix a bug which prevented suspend/resume to work properly
1135 * Display the status of simulated processes when receiving SIGINT
1136 This fixes a regression of v3.3. due to the introduction of SIMIX
1137 * Bug fixing in failure management:
1138 - trace could not start by a failure at time 0
1139 - failure during communications were not working
1142 * Add SIMIX_process_set_name() to change the name of the current
1143 process in the log messages.
1144 * Store smx_hosts in a dict since we only retrieve them by name
1145 * Move the configuration infrastructure to surf
1148 * Move the configuration infrastructure to surf
1151 * Massive internal cleanups:
1152 - Store internal structures on processes instead of hosts (allows
1153 to have more than one process per host, in addition of being more
1155 - Cleanup the initialization/finalization process
1156 - Kill a whole bunch of unneeded synchronization:
1157 processes run in exclusive manner within the simulator
1158 - Move queues from global tables to process data fields
1160 - now accept -platform and -hostfile arguments
1161 - Pass the right rank value to processes according to the hostfile
1162 * Compile the examples by default, and use them as regression tests
1163 * Implement MPI_Wtime()
1164 * Change the reference speed to a command line option
1167 * TCP_gamma can now be specified as command line option using
1168 --cfg=TCP_gamma:10000000.0
1169 * Change the --surf-path cmd line option into --cfg=path:
1172 * Also include strbuff from xbt.h public header
1173 * xbt_ex_display(): do not free the exception after displaying
1174 This allows to do more with the given exception afterward.
1175 Users should call xbt_ex_free() themselves.
1179 Portability report of this version:
1180 * Main portability targets:
1181 - Linux(debian)/x86/context
1182 - Linux(debian)/x86/pthreads
1183 - Linux(debian)/amd64/context
1184 - Linux(debian)/amd64/pthreads
1185 These targets fail about 1/10 of times on gras/pmm, but we believe
1186 that this is because of the test, not because of simgrid.
1187 amok/saturate_sg fails even more rarely, and the test may not be
1190 - Mac OSX Leopard/x86/context
1191 The test suite still spits tons of errors because some obscure
1192 force prevents us from removing the temporary directories
1193 arguing that they still contain some metadata I've never heard of.
1194 Smpi fails because seq is not installed.
1195 Everything seems to work properly beside of that.
1198 - AIX version 5.3 (both contexts and pthread)
1199 Smpi still fails there because mktemp is not installed.
1200 XML inclusions seems rosty on AIX.
1202 * Windows: it's still lagging behind. If you want to help, please
1205 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
1207 SimGrid (3.3) stable; urgency=high
1211 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
1212 [Malek Cherier & Mt]
1214 * Introduce the SIMIX module: factorize code between MSG and GRAS.
1217 Until now, GRAS were using MSG as an interface to SURF. It was
1218 quite difficult because both interface have several differences
1219 (MSG channels vs GRAS sockets were the most notable point).
1221 This also opens the gate to SMPI (which should occur soon) and speed
1222 up simulations by to 40% (even if it were not the main goal).
1224 **************************************
1225 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
1226 **************************************
1227 The point is that events occuring at the exact same timestamp are
1228 not scheduled in the same order with the old and new version. This
1229 may be enough to completely change the execution of simulations in
1230 some cases. Sorry for the inconvenience.
1232 * Cleanup and upgrade the XML format to push further scalability
1233 issues (check http://hal.inria.fr/inria-00256883/ for more info)
1235 * Improve the testing infrastructure with tesh. Now a very large part of
1236 the code is tested not only by being run but also by checking that the
1237 output match an expected output [Mt].
1239 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
1240 is really less memory-demanding, which should allow you to use
1241 larger files in SimGrid [AL].
1243 * Inform valgrind about our contextes, so that it becomes usable
1244 with the default (and more effecient) version of SimGrid
1245 [contributed by Sékou Diakite, many thanks]
1248 * Introduce a listener thread in charge of receiving incoming
1249 messages from the network. It allows to overlap communication and
1250 computation but most notably, it removes some stupid deadlocks due
1251 to the fact that so far, a process could not send and receive at
1252 the same time. This made most non trivial communication schema
1254 * Convert the PIDs from long int to int to match the MSG ones (and
1255 linux ones too) [Mt]
1256 * New function: gras_agent_spawn() to launch a new process on
1257 current host. Only working in simulation for now. [Mt]
1258 * New function: gras_os_hostport() returning a constant form (ie,
1259 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
1262 * Make the backtrace of exceptions more human readable [Mt]
1263 * New module: xbt/str [Mt]
1264 a ton of string utility functions (split, join, printf to a newly
1265 allocated buffer, trim, etc)
1266 * New module: xbt/hash [Mt]
1267 SHA1 hashing algorithm (more to come if needed)
1268 * New module: xbt/synchro [Mt]
1269 synchronization tools (mutex and conditions) working the same way
1270 in simulation and in real life (mainly useful for GRAS, but not
1272 * New module: xbt/queue [Mt]
1273 classical producer/consumer synchronization scheme
1274 * xbt_dynar_new_sync() creates a synchronized dynar. All access
1275 (using the classical functions will get serialized) [Mt]
1276 * Make dictionary internal table dynamic. No need to specify its size
1277 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
1279 * Make sure the log channels are organized as a tree under windows
1280 (because of ANSI C compatibility issue, any channel were child of
1281 root directly) [Mt].
1284 * Cleaned many thing in surf and fixed a few bugs [AL].
1285 * Add a nice command line configuration mechanism to compose models [AL].
1286 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
1287 the previous one (KCCFLN05). It relies on something that looks like
1288 a max-min sharing mechanism but cannot be written as such. A new solver
1289 was thus designed [AL].
1290 * Add a new solver to lmm. Based on Lagrange optimization and
1291 gradient-based descent, it enables to efficiently maximise systems s.a
1293 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
1295 This solver enables to propose two new network models for TCP Reno and
1296 TCP Vegas based on Low's work. These models still need to be fully
1297 tested though [Pedro Velho].
1300 * Bug fix in SD_simulate. Now the time bound given as argument is
1302 * Use the new parallel task model (ptask_L07) as default.
1303 * Use the SURF command line configuration mechanism.
1304 * 0-size tasks (for synchronization) should now work.
1306 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
1308 SimGrid (3.2) stable; urgency=high
1312 We still experience issues on this platform, but we believe that at
1313 least MSG is usable.
1315 GRAS API BREAKAGE (for simplification purpose, sorry):
1316 * the gras_msgtype_by_name is not used anymore. Instead of
1317 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
1318 you can write (and must)
1319 gras_msg_send(toserver, "request", &request);
1320 - If you still want to pass a gras_msgtype_t to the function (to cache
1321 the type and avoid the lookup time), use the gras_msg_send_() variant.
1322 - Impacted functions:
1323 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
1324 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
1325 * The callbacks are now expected to return 0 when everything went well
1326 (just like the main() function)
1328 GRAS new features and improvements:
1329 * New module mecanism where user code can use per process globals [Mt]
1330 This is similar to gras_userdata_*() functions, but for libraries. It
1331 factorize some code developped over and over in the examples and AMOK.
1332 It has still to be documented and used (only amok/peermanagement is
1334 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
1335 loss when they were small enough to fit into the buffer and sent quickly
1336 enough so that they can all get received in one shoot.
1337 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
1338 if not found. Use the *_or_null() variant for the old semantic.
1339 * In gras_msg_handle, do not discard messages without callback.
1340 They are probably messages to be explicitly awaited later (ie, proofs of
1341 mis-synchronization in userland since they are sent before being awaited)
1342 No big deal usually.
1343 * gras_socket_meas_send/recv: semantic changed!
1344 The numerical arguments used to be (1) the total amount of data to send
1345 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
1346 messages. This was need for the fool willing to send more than MAXINT
1347 bytes on quite fat pipes.
1350 * Do really rename the hostmanagement module to peermanagement. [Mt]
1351 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
1352 but this is rather new and this was documented in the module
1353 documentation (poor excuses, I admit)
1354 * Bandwidth measurement semantic changed! This follows the changes to
1355 gras_socket_meas_send/recv explained above.
1358 * A sequential mode has been added to the workstations. When a workstation
1359 is in sequential mode, it can execute only one task, and the other tasks
1360 are waiting in a FIFO. [Christophe Thiery]
1363 * The KCCFLN05 workstation model now handles parallel tasks. It is the
1364 model for SIMDAG. [Christophe Thiery]
1365 * Bug fix in the maxmin solver: Some values were close to 0 instead of
1366 equal to 0, which caused some bad behaviors in
1367 saturated_constraint_set_update. I now use a threshold mechanism like in
1371 * When running manually src/testall, you select specific units [Mt]
1372 testall is the result of our cunit mecanism, and should replace all
1373 the scripty thingy around since bash don't run easily on billware.
1375 * A mallocator system has been added. [Christophe Thiery]
1376 Mallocators allow you to recycle your unused objects instead of freeing them
1377 and allocating new ones.
1379 Documentation update:
1380 * FAQ reworking + New FAQs:
1381 - "Valgrind spits tons of errors!" [Mt]
1382 - "How to repport bugs" [Mt]
1383 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
1384 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
1385 - Communication time measurement within MSG [AL]
1386 - I experience weird communication times when I change the latency [AL]
1387 * GRAS tutorial [Mt]
1389 - an introduction to the framework and to the used communication model
1390 - an initiatic tour introducing the most proheminent features:
1392 . Lesson 0: Installing GRAS
1393 . Lesson 1: Setting up your own project
1394 o Part 2: Message passing
1395 . Lesson 2: Exchanging simple messages
1396 . Lesson 3: Passing arguments to the processes (in SG)
1397 . Lesson 4: Attaching callbacks to messages
1398 . Lesson 5: Using globals in processes
1399 . Lesson 6: Logging informations properly
1400 . Lesson 7: Using internal timers
1401 . Lesson 8: Handling errors through exceptions
1402 . Lesson 9: Exchanging simple data
1403 . Lesson 10: Remote Procedure Calling (RPC)
1404 . Lesson 11: Explicitely waiting for messages
1405 . Recapping of message passing features in GRAS
1406 - A HOWTO section containing:
1407 o HOWTO design a GRAS application
1408 More are due, of course. They will come latter. In the meanwhile, you can
1409 check the examples which are still here.
1411 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
1413 SimGrid (3.1) stable; urgency=high
1417 There was a stack corruption somewhere, visible only when optimizing
1418 with these versions. [Vince]
1421 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
1422 module that enabled to play with Directed Acyclic Graphs. It is built
1423 directly on top of SURF and provides an API rather close to the old
1424 SG. Some old codes using SG are currently under rewrite to check that
1425 all needful functions are provided. [Christophe Thiery]
1428 * Complete rewrite of the KCCFLN05 workstation model. It is now an
1429 extension of the classical CLM03 model that gracefully handles
1430 failures. This is now the default model for MSG and GRAS. It doesn't
1431 handle parallel tasks yet though. [AL]
1432 * Bug fix: Weights were not correctly set in the network part.
1433 WARNING: This may have resulted in incorrect results with simulations
1434 where there are more than one flow on a given link. [AL]
1437 * After a (long ?) discussion on simgrid-devel, we have decided that the
1438 convention we had on units was stupid. That is why it has been decided
1439 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
1440 WARNING : This means that all previous platform files will not work as
1441 such with this version! A warning is issued to ask users to update
1443 A conversion script can be found in the contrib module of the CVS, under
1444 the name contrib/platform_generation/surfxml_update.pl [MQ]
1447 * Bug fix: Processes were started in reverse order, wrt deployment file.
1448 WARNING: if your code relies on this bug, please fix it. [AL]
1449 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
1450 being executed on two different locations. [AL]
1451 * Bug fix: Failures are now better supported thanks to Derrick's tests
1452 (there was many failure situations I hadn't thought of and that weren't
1453 correctly handled). [AL]
1454 * New function: MSG_host_is_avail indicates you whether a given m_host_t
1458 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
1459 Exception occurring on server-side are propagated back to client (!).
1461 API CHANGE: the callback changed their prototype. Change:
1462 int my_handler(gras_socket_t expeditor, void *payload_data) {
1464 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
1465 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
1467 * New! function: gras_msg_handleall to deal with all messages arriving
1468 within a given period.
1469 * New! function: gras_socket_server_range to get a server socket in a
1470 range of port numbers (ease to avoid port number conflicts) [MQ]
1471 * New! gras processes display their backtrace when they get a SIGUSR1
1472 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
1473 Sweet to debug RL processes [MQ]
1477 - Do not force experiment sizes to be expressed in kb, or it becomes
1478 impossible to measure the latency this way (needs one byte-long tests)
1479 WARNING: this changes the amok_bw_* function semantic. [MQ]
1480 - Implements the link saturation stuff. [MQ]
1481 * Peer management module:
1482 New! module factorizing code that we wrote over and over [MQ].
1485 * New module: cunit (my jUnit implementation in ansi C) [MQ]
1486 - Test units are placed directly into the library code, they get extracted
1487 automatically and placed into the src/testall binary.
1488 - Convert most of the XBT tests to this system.
1489 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
1490 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
1491 live in the same C code. This required to change a little bit the API
1492 of surfxml parsing but shouldn't be an issue for end-users. [AL]
1493 * New module: sparse graph structure with basic algorithms (this is work
1494 in progress and the API is not considered to be frozen yet). [AL]
1495 * Display more information on backtraces: source line & function names are
1496 now displayed just like valgrind does (rely on addr2line tool) [MQ]
1497 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
1498 * Reworked a little bit some #include statements to load only required
1499 headers. Some user code that relied on SimGrid to include stdlib or
1500 stdio may need to include it by themselves. [AL]
1501 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
1503 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
1504 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
1505 but I guess that almost nobody used those parts. [MQ]
1507 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
1509 SimGrid (3.0.1) stable; urgency=low
1512 * Unfortunately, I had missed 5 misnamed functions:
1513 xbt_fifo_item_t xbt_fifo_newitem(void);
1514 void xbt_fifo_freeitem(xbt_fifo_item_t);
1515 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
1516 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
1517 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
1518 They're now deprecated. Please use their new versions:
1519 xbt_fifo_item_t xbt_fifo_new_item(void);
1520 void xbt_fifo_free_item(xbt_fifo_item_t);
1521 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
1522 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
1523 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
1525 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
1526 * Documentation: xbt_log module unmercifully reworked [MQ]
1527 * Bugfix: there was a problem with the ending of contexts with
1528 the pthread backend. It caused some weird deadlock or behavior
1529 depending on the pthread implementation. [AL]
1530 * Bugfix: get the exceptions raised in the simulator repport where
1531 and why they come from when they are not catched in time [AL, MQ]
1534 * Bugfix: Do repport the error when two non-connected hosts try to
1535 exchange data (Thanks to Flavien for stumbling into this one) [AL]
1538 * Add additionnal checkings on communications. Assert that two
1539 communicating hosts are connected by a set of links... [AL]
1542 * Add additionnal checkings on channel values in communication [AL]
1543 * New: MSG_task_get_source to see on which host a task was generated [HC]
1544 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
1545 the number of tasks waiting to be received on channel and sent
1547 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
1548 waits for the first task coming from a given host.. [AL]
1550 GRAS new functionnalities: [MQ]
1551 * Enhance the parsing macro to allow the size of multidimentional objects
1552 to be given thru annotations.
1553 * New example (and documentation): Matrix Multiplication a la RPC
1554 (as when I was young!) and fix a bunch of bugs found on the way.
1556 GRAS performance improvements: [MQ]
1558 * Reduce the amount of cbps creation/destruction by making it static to
1559 datadesc_send/recv() and using a (newly created) cbps_reset (based on
1562 * Change libdata to a set so that we can search for stuff by ID (and thus
1563 reduce the insane amount of dict lookups)
1566 * Actually implement gras_datadesc_copy() so that we don't have to mimick
1567 RL communication on top of SG since it's so uneffective.
1568 It may also be used for inter-thread communication in RL, one day.
1569 * Use gras_datadesc_copy() to exchange messages on top of SG
1571 - improve message exchange performance on top of SG
1572 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
1573 * Don't exchange on the network the size of the used part of buffer,
1574 instead, specify the possible buffer size to read().
1576 - reduces the amount of read/write calls (one pair per exchange)
1577 - reduces the amount of exchanged data (the size)
1578 - allows to retrieve all arrived data on receiver side, if we don't need
1579 it right now (subsequent read will peek the buffer)
1580 - allows the receiver to proceed with the begining of the stream before
1581 everything is arrived
1582 - make it possible to build an iov transport (using readv/writev)
1584 - take care of the data with non-stable storage (like stacked data),
1586 * If possible, TCP send uses vector I/O (when writev() is here)
1587 - Don't use it for receive since we send data sizes and data on the
1588 same stream, so we wouldn't be able to chain large amount of chunks
1589 before having to flush the stuff to read the size.
1590 * Rework the transport plugin mecanism to simplify it and reduce the
1591 amount of pointer dereferencement when searching for the right function
1594 * I guess that now, we do almost as few system calls as possible while
1595 doing as few data copy as possible.
1597 To improve it further, we could try to send all the sizes first and then
1598 all the data (to use iov on receiving size), but it's only a partial
1599 solution: when you have 2 dimensional data, the sizes of the second
1600 dimension is data of the first dimension, so you need 3 streams.
1602 I'm not sure the potential performance gains justify the coding burden.
1604 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
1606 SimGrid (3.00) stable; urgency=high
1609 * New! Give the possibility to hijack the surf parser and thus bypass
1610 MSG_create_environment and MSG_launch_application. Have a look at
1611 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
1613 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
1615 SimGrid (2.96) unstable; urgency=low
1620 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
1621 This deprecates the xbt_error_t mecanisms.
1622 It modifies (simplifies) all XBT and GRAS API.
1623 MSG API keeps unchanged (exceptions raised by XBT are catched from
1624 within MSG and masked with existing error handling facilities)
1627 * New! Add a FATPIPE model. [AL]
1628 * New! Add a parallel task model. [AL]
1629 * New! Add automatically a loopback interface (in the default
1630 network model) if none was precised.
1633 * Bugfix: MSG_process_resume now works with the current running process.
1635 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
1636 * Modification of MSG_task_get_compute_duration. Once a task has been
1637 processed, the value returned by this function is now equal to 0. [AL]
1638 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
1639 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
1640 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
1641 of a m_task. For now, MSG_task_cancel only works with computation
1643 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
1644 of the processor (in Mflop/s) regardless of the current load on the
1646 * API Change: use proper naming convention for MSG_getClock and
1647 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
1649 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
1650 This function changes the priority of a computation task. This priority
1651 doesn't affect the transfer rate. A priority of 2 will make a task
1652 receive two times more cpu power than the other ones. This function
1653 has been added to suit the needs of Nguyen The Loc and hasn't been that
1654 much tested yet. So if it fails, please report it and send me your code.
1656 * API Change: removed all functions and types that were marked "deprecated"
1657 since many months. Renamed MSG_global_init_args to MSG_global_init.
1659 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
1661 SimGrid (2.95) unstable; urgency=low
1664 * Steal some nice code to GNU pth to fix context detection and usage [AL]
1665 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
1666 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
1669 * Bugfix: Allow absolute paths for platform description files [MQ]
1670 * Bugfix: do free the variables after use. Leads to drastic performance
1672 * Implement max_duration (ie, timeouts) on resources [AL]
1675 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
1677 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
1678 the needed support (timeouts) [AL]
1681 * Implement measurement sockets. You can now get the bandwidth between two
1682 hosts thanks to AMOK (see below). [MQ]
1683 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
1684 dynar over the network (yeah) [MQ]
1685 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
1686 * simple/static token-ring example. [Alexandre Colucci and MQ]
1687 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
1688 in place before [MQ]
1691 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
1692 type parsing. "short" and "long" modifiers were also ignored; other
1693 modifier (such as reference level) are still ignored. [MQ]
1694 * Embeed the buffer size within the buffer itself on SG. [MQ]
1695 That way, send() are atomic and cannot get intermixed anymore (at least
1696 the ones which are less than 100k; bigger messages still have the issue)
1697 * Array size pushed by the field, not by the field type (or each
1698 and every long int will push stuff to the cbps) [MQ]
1699 * use select() to sleep since it allows to portably sleep less than one
1702 GRAS (minor cleanups)
1703 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
1706 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
1707 * type category 'ignored' killed as it was never used and were difficult
1709 * whether a type can cycle or not is now a flag, leaving room for more
1710 flags (as "ignored", if we feel the need one day ;)
1711 * Rename raw sockets to measurement sockets since "raw" has another
1712 meaning in networking community.
1715 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
1716 and offers features not belonging to GRAS but that most applications
1717 need. One day, it may be a set of plugins loadable at runtime.
1718 * New module: bandwidth
1719 bandwidth measurement between arbitrary nodes running this module. [MQ]
1721 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
1723 SimGrid (2.94) unstable; urgency=low
1725 The first beta release of SimGrid 3 !
1729 * Update the main page and the FAQ. Adding references to gforge.
1732 * Add a gras_os_getpid function.
1735 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
1736 * Extend the logs so that they also print PID, hostname, date, ... if
1738 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
1739 and kill the old version which were in testsuite/
1740 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
1744 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
1745 for users. Instead, each programming environment (GRAS, MSG,...) use it
1746 when needed to provide such a feature to users.
1747 Don't shortcut the mecanism or you will also shortcut the virtualization
1748 you need on the simulator.
1752 * Cleanups in configury with regard to compile optimization/warning flags.
1753 Also add -fno-loop-optimize to any powerpc since it's the optimization
1754 killing gcc (< 3.4.0).
1755 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
1756 needed by MSG examples complications
1757 * Borrow configury beautifications from PHP
1760 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
1761 warning (thanks loris for stumbling into this one).
1762 * Bugfix: stop loading private headers (gras_config.h) from the public
1766 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
1767 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
1768 RL would imply a DNS resolver, which is *hard* to do in a portable way
1769 (and therefore delayed).
1770 * Implement a real timer mecanism and use it in timing macros. This allows
1771 to avoid rounding errors and get a 0.000005 sec precision in timing
1772 macros. While I was at it, various cleanups:
1773 - allow to declare more than one timed section per file (fix a stupid bug)
1774 - move some private declaration to the right place
1775 - merge conditional execution and timing macros into emulation module
1776 - document the module
1777 - make sure the module cleanups its mess on gras_exit
1778 * Documentation improvements:
1779 - (new) how to compile applications using GRAS
1780 - (new) emulation support (timing macros)
1782 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
1784 SimGrid (2.93) unstable; urgency=low
1786 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
1789 - Use Paje properly where used. Still to be sanitized properly.
1790 - Portability fix: Add an implementation of the contexts using pthread
1794 - Add xbt_procname(): returns the name of the current process.
1795 Use it to show the current process's name in all logging.
1797 - fix detection of older flex version and the reaction, since we do
1798 depend on modern ones (we use lex_destroy)
1799 - Better separation of SG and RL in the libs: remove all simulation code
1800 from libgras. As a result, this lib is now only 200k when stripped.
1801 Some of the xbt modules may also be duplicated (two sets and such) and
1802 should be cleaned/killed before SG3.
1803 - Insist on using xlC on AIX because of weird problems involving gcc there.
1804 - Cleanup the make remote stuff. This is now done by scripts
1805 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
1806 mainly for our private use, but we're working on changing them to user
1809 - Bugfix: flush the socket on close only if there is some *output*.
1810 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
1812 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
1815 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
1817 SimGrid (2.92) unstable; urgency=low
1819 Alpha 3 on the path to SimGrid 3
1823 - New! First try of benchmarking macros.
1824 - New! First try so that gras_stub_generator generate deployment and
1825 remote compilation helpers.
1827 - Bugfix: Initialization fix in msg_test.
1831 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
1833 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
1835 - API Change: gras_os_sleep to take the amount of seconds as a double.
1836 Accepting an int was error prone since it was the only location where
1837 seconds were coded as such. It leaded to damn rounding errors.
1838 - Bugfix: Hard to belive that timers ever worked before this.
1840 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
1842 SimGrid (2.91) unstable; urgency=low
1844 Alpha 2 on the path to SimGrid 3
1848 - Bug fix in the lmm_solver.
1850 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
1851 through the function MSG_paje_output.
1852 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
1853 - It is possible to bound the rate of a communication in MSG with
1854 MSG_task_put_bounded() (was already in the previous version but I had forgotten
1855 to write it in the changelog).
1856 - Bug fix to let GRAS run on top of MSG until we move it directly on top
1861 - Various cleanups to the autotools stuff
1862 - Begin to move Gras examples to examples/gras/
1863 - Let make distcheck work again (yeah!)
1865 - documentation overhauled using doxygen.
1866 gtk-doc-tools is dead in SimGrid now.
1867 - Automatically extract all existing logging categories, and add the list
1868 to the documentation (long standing one, to say the less)
1870 - Cleanup the known architecture table. Reorder the entries to group what
1871 should be, and use a more consistent naming scheme.
1872 (some of the test dataset are still to be regenerated)
1873 - New! Allow library to register globals on each process just as userdata
1875 This is implemented using a xbt_dict and not a xbt_set, so we loose the
1876 lookup time (for now).
1877 Use it in msg and trp.
1878 This cleans a lot the internals and helps enforcing privacy of the
1879 headers between the gras components.
1880 - New! Add a timer mechanism, not unlike cron(8) and at(1).
1881 - Bugfix: gras_os_time was delirious in RL.
1882 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
1884 - Reenable GRAS now that it works.
1886 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
1888 SimGrid (2.90) unstable; urgency=low
1890 Alpha 1 on the path to SimGrid 3
1892 * It is a long time since the last release of SimGrid. I'm sorry about
1893 that but as I had told you, I was rewriting a lot of things. I apologize
1894 to those who had been reporting bugs to me and that I had not answered.
1895 If your bug is still in the new version, please tell me. Here is a
1896 summary of the main changes.
1898 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
1899 lead by Martin Quinson. As a consequence SimGrid gains a lot in
1900 portability, speed, and a lot more but you'll figure it out later.
1901 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
1902 I wanted to release the new MSG as soon as possible and I have
1903 broken GRAS, which is the reason why, for now, only MSG is fully
1904 functional. A laconic description of these projects is available
1905 in the documentation.
1907 * REVOLUTION 2: I have removed SG and I am now using a new simulation
1908 kernel optimized for our needs (called SURF but only the developers
1909 should use it). Hence, MSG is now roughly 30 times faster and I think
1910 that by rewriting a little bit MSG, I could event speed it up a little
1911 bit more. Beside the gain in speed, it is also much easier to encode a
1912 new platform model with SURF than it was with SG. More to come...
1914 * REVOLUTION 3: I have tried to change a little as possible the API of
1915 MSG but a few things really had to disappear. The main differences
1916 with the previous version are :
1917 1) no more m_links_t and the corresponding functions. Platforms are
1918 directly read from a XML description and cannot be hard-coded
1919 anymore. The same format is used for application deployment
1920 description. The new format is described in the documentation.
1921 Have a look in tools/platform_generation. There is a tiny script
1922 that converts from the old platform format to the new one. Concerning
1923 the application deployment format, parsing the old one is tricky.
1924 I think most of you should however be able to convert your files. If
1925 it is really an issue, I can write a C code that does the conversion.
1927 2) the toolbox tbx does not exist anymore. We now have a library
1928 with much more data-structures but without the hash-tables (we have
1929 dictionaries that are much faster).
1931 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
1933 *****************************************************************************
1934 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
1935 * don't feel like converting the oldies. (Mt) *
1936 *****************************************************************************
1939 Version 2.90: "the long awaited one"
1940 - Finished rewriting and debugging MSG. Rewrote the documentation.
1941 - disable GRAS for now since it needs to be ported to the newest SG
1944 - Finish the port to windows (using mingw32 for cross-compile)
1947 - Main loop and datastructures of SURF. A cpu resource object is
1948 functional. Surf can thus be used to create cpu's with variable
1949 performance on which you can execute some actions.
1951 2004-11-15 Martin Quinson
1952 - Port to ARM. Simply added the alignment and size descriptions. Should
1953 work, but the ARM machines are so slow that I didn't had the opportunity
1954 to 'make check' over there yet.
1956 2004-11-15 Arnaud Legrand
1957 - Trace manager now written. It uses a heap structure and is therefore
1958 expected to be efficient. It may however be speeded up (particularly
1959 when many events occur at the same date) by using red and black
1960 trees. One day maybe...
1961 - Max-min linear system solver written. It uses a sparse matrix
1962 structure taking advantage of its expected use. Most operations are
1963 O(1) and free/calloc are called as few as possible. The computation of
1964 the minimum could however be improved by using a red and black tree
1967 2004-11-03 Arnaud Legrand
1968 - Rename every gras_* function that was in xbt/ to its xbt_
1970 - Add a heap and a doubly-linked list to xbt
1971 - Added a dichotomy to the dictionaries. make check works as well before
1972 so I assume that the patch is correct. I do not know however if things
1973 run effectively faster than before now. :)
1975 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
1976 SimGrid, and the version number is bumped to 2.x
1978 2004-10-29 Martin Quinson
1979 - Introduction of the remote errors.
1980 They are the result of a RMI/RPC on the remote machine.
1981 ErrCodes being scalar values, you can't get the host on which those
1982 errors did happen. Extending the error mechanism as in Gnome is possible.
1983 No idea yet whether it is a good idea.
1985 2004-10-28 Martin Quinson
1986 - Interface revolution: the Starred Structure Eradication.
1987 I used to do typedef struct {} toto_t; and then handle *toto_t.
1988 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
1989 - ???_t is a valid type (builded with typedef)
1990 - s_toto_t is a structure (access to fields with .)
1991 - s_toto is a structure needing 'struct' keyword to be used
1992 - e_toto_t is an enum
1993 - toto_t is an 'object' (struct*)
1995 typedef struct s_toto {} s_toto_t, *toto_t;
1996 typedef enum {} e_toto_t;
1997 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
1998 s_toto_t) is private.
2000 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
2001 so that it can set the variable to NULL. It was so for dicts and sets,
2002 it changed for dynars.
2004 - Fix a bunch of memleaks in dict_remove
2005 - Fix a bug in sg/server_socket opening: it failed all the time.
2007 2004-10-07 Martin Quinson
2008 - Speed up dynar lookup operation a bit.
2010 gras_dynar_get is dead.
2012 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
2013 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
2014 (which gives you the address of the stored data).
2016 gras_dynar_get_as is an helpful macro which allows you to retrieve a
2017 copy of the data using an affectation to do the job and not a memcpy.
2019 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
2020 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
2022 It does not really speedup the dynar test because they are
2023 setting elements all the time (and look them seldom). But the dict does
2024 far more lookup than setting.
2026 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
2028 2004-10-05 Martin Quinson
2029 - Allow to (en/dis)able the cycle detection at run time.
2031 Whether we should check for cycle or not is now a property of each
2032 datatype. When you think there may be some cycle, use datadesc_cycle_set.
2033 datadesc_cycle_unset allow to remove this property when previously set.
2035 Note that the cycle detection is off by default since it impacts the
2036 performance. Watch the data you feed GRAS with ;)
2038 This property is hereditary. Any element embedded in a structure having it
2039 set have it set for the time of this data exchange.
2041 You should set it both on sender and receiver side. If you don't set it on
2042 sender side, it will enter an endless loop. If you forget on receiver
2043 side, the cycles won't be recreated after communication.
2045 - Header reorganization.
2046 Kill gras_private.h, each submodule must load the headers it needs.
2048 2004-10-04 Martin Quinson
2049 - Interface revolution: do not try to survive to malloc failure.
2051 Now, gras_malloc and friends call gras_abort() on failure.
2052 As a conclusion, malloc_error is not a valid error anymore, and all
2053 functions for which it was the only gras_error_t return value are
2054 changed. They now return void, or there result directly.
2055 This simplify the API a lot.
2057 2004-09-29 Martin Quinson
2058 - Re-enable raw sockets.
2059 Created by gras_socket_{client,server}_ext;
2060 Used with gras_raw_{send,recv}
2063 It should allow to kill the last bits of gras first version soon.
2065 This is not completely satisfactory yet (duplicate code with
2066 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
2069 - Simplify transport plugin (internal) interface by not passing any
2070 argument to _server and _client, but embedding them in the socket
2073 2004-09-28 Martin Quinson
2074 - Finish the port to AIX.
2075 autoconf was my problem (segfault within the malloc replacement
2076 function. No idea why)
2078 2004-09-16 Martin Quinson
2079 - Fix some size_t madness on 64bit architectures.
2081 2004-09-08 Martin Quinson
2082 - Reduce the number of system headers loaded, overload some more system
2083 calls (such as malloc to cast the result of the system one, and work
2085 - Fix and reintroduce the config support
2087 2004-09-07 Martin Quinson
2088 - Source code reorganization to allow Arnaud to surf all over there.
2089 - Allow to document the logging categories.
2090 - Remove all uppercase from logging categories and useless cleanup in names.
2092 2004-08-18 Martin Quinson
2093 Version 0.6.2 (protocol not changed; API changed)
2094 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
2095 gras_error_t), and NULL when not found. Functions expecting a msgtype
2096 as argument (msg_wait; msg_send) deal with NULL argument by providing a
2097 hopefully usefull message.
2098 - Portability to prehistoric sparcs again
2100 2004-08-17 Martin Quinson
2101 Version 0.6.1 (protocol not changed; ABI not changed)
2102 - prealloc some buffers to speed things up
2104 2004-08-11 Martin Quinson
2105 Version 0.6 (protocol not changed; ABI expended)
2106 - The parsing macro can deal with the references, provided that you add
2107 the relevant annotations (using GRAS_ANNOTE(size,field_name))
2109 2004-08-09 Martin Quinson
2110 Version 0.5 (protocol not changed; ABI changed)
2111 - Allow to off turn the cycle detection code in data exchange at
2112 compilation time. It should be at run time, but I'm short of time (and
2113 the config stuff is still broken). That way, we keep dict out of the
2114 critical path, which is good because the performance is poor:
2115 - search not dichotomial yet
2116 - dynar give no way to access their content and memcpy everytime
2117 - In composed data description (struct, ref and so on), stop foolness of
2118 keeping the subtype's ID, but store the type itself. This keeps sets out
2119 of the critical path, which is good since they rely on dynar and
2120 dictionnaries. The only loose of that is that we cannot detect the
2121 redeclaration of a structure/union with another content (but I'm not sure
2122 the code detected well this error before anyway). We still can detect
2123 the redefinition discrepancy for the other types.
2124 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
2125 it breaks the code because of type-punning used all over the place).
2126 This breaks on all non-gcc architectures (for now).
2128 All those changes (plus the buffer of last time) allow me to gain 2 order
2129 of magnitude on cruel tests consisting of 800000 array of integers on two
2130 level of a hierarchical structure (200 secondes -> 4 secondes)
2133 - the selector of reference must now return the type it points to, not
2134 the ID of this type.
2136 2004-08-06 Martin Quinson
2137 Version 0.4 (protocol changed; ABI not changed)
2138 - Allow to pass --gras-log argument to processes in simulation mode. Really.
2139 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
2140 - Implement a buffer transport, and use it by default (it relies on tcp in
2141 real life and on sg in simulation).
2142 That's a bit hackish since I had a new field to the structure to store
2143 its data without interfering with the subtype ones. Inheritance
2144 is tricky in C. And that's a kind of reverse inheritance with one class
2145 derivating two classes. Or maybe a game with java interfaces. Anyway,
2146 that's damn hard in C (at least).
2147 Moreover, I got tired while trying to ensure plugin separation and
2148 genericity in SG mode. MSG wants me to do weird things, so let's go for
2149 cruel hacks (temporarily of course ;).
2150 See comment in transport_private.h:71
2151 - do not include all the _interface headers in private but in the files
2152 which really need them (to cut the compilation time when they are
2155 2004-07-26 Martin Quinson
2156 Version 0.3 (protocol not changed; ABI changed)
2157 - Major overhault of the datadesc interface to simplify it:
2158 - shorted the function names:
2159 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
2160 - add a trivial way to push/pop integers into the cbps without malloc.
2161 This allows to make really generic sub_type description, which simply
2162 pop their size of the stack.
2163 - add a function gras_datadesc_ref_pop_arr() which does what users want
2164 most of the time: Declare a dynamic array (which pops its size of the
2165 stack) and declare a reference to it. Poor name, but anyway.
2166 - kill the post-send callback, add a post-receive one
2168 2004-07-23 Martin Quinson
2169 Version 0.2 (protocol changed; ABI changed)
2170 - add some testing for cpbs in the test cases, and fix some more bugs.
2171 This invalidate again the little64 data file, since I cannot regenerate
2173 - remove an awfull optimization in the logging stuff, allowing me to:
2174 - understand it again
2175 - learn gcc how to check that the argument match the provided format
2176 - fix all errors revealed by gcc after that
2177 - internal keys of dict are not \0 terminated. Deal with it properly in
2178 loggings instead of segfaulting when the user want to see the logs :-/
2180 2004-07-22 Martin Quinson
2181 - Fix some stupid bug preventing cbps (callback postit) from working
2183 2004-07-21 Martin Quinson
2184 - Some documentation cleanups
2185 - remove the useless last argument of msgtype_declare
2186 - rename the Virtu functions to fit into the 'os' namespace
2187 - move headers src/include -> src/include/gras/ and stop fooling with
2188 gras -> . symbolic link
2189 - make distcheck is now successful
2191 2004-07-19 Martin Quinson
2193 - Build shared library also
2194 - Install html doc to the right location
2195 - stop removing maintainer files in make clean
2196 - build tests only on make check
2198 2004-07-13 Martin Quinson
2200 - No major issue in previous version => change versionning schema
2201 - Re-enable little64 convertion test now that Abdou kindly regenerated the
2202 corresponding dataset.
2204 2004-07-11 Martin Quinson
2206 - Get it working with any kind of structure (we can compute the padding
2207 bytes remotely for all the architectures I have access to)
2208 - Implement the structure parsing macro (still not quite robust/complete)
2209 - Improvement to the remote testing toysuite
2211 2004-07-10 Martin Quinson
2212 [autoconf mechanism]
2213 - get ride of a bunch of deprecated macros
2214 - actually run the test for two-compliment, not only compile it :-/
2215 - test whether the structures get packed (and bail out if yes. Damn.
2216 Alignment is a serious matter)
2217 - test whether the structures get compacted (but respecting the alignment
2218 constraints of each types)
2219 - test whether the array fields of structures can straddle alignment boundaries
2221 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
2222 (took me 2 hours to find that bug, looking at the wrong place)
2223 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
2224 before sending/receiving and are used to compute the offsets of fields
2225 - Given that padding size depend even on compiler options, keep track of
2226 alignment and aligned_size only for the current architecture. Not a big
2227 deal since we send structure fields one after the other (seems
2229 - Add the datastructure used for IEEE paper by the PBIO guys to the test
2230 program, let it work on linux/gcc/little32. portability todo.
2232 2004-07-08 Martin Quinson
2233 - import and improve remote compilation support from FAST
2234 - make sure make check works on half a dozen of machines out there
2236 2004-07-07 Martin Quinson
2237 Let's say it's version 0.0.3 ;)
2238 - Implement conversions (yuhu!)
2239 - Let it work on solaris (beside conversion, of course)
2240 - Stupid me, using rand() to generate the conversion datatests in not wise.
2242 2004-07-06 Martin Quinson
2243 - Let make dist work, since I'm gonna need it to compile on remote hosts
2244 - Let Tests/datadesc_usage write the architecture on which the file was
2245 generated as first byte.
2246 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
2247 architecture descriptions.
2248 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
2249 on those architectures.
2250 - Optimization: send/recv array of scalar in one shoot
2252 2004-07-05 Martin Quinson
2253 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
2255 - Plug a whole bunch of memleaks
2256 - each process now have to call gras_{init,exit}. One day, their log
2257 settings will be separated
2258 - Continue the code factorisation between SG, RL and common in Transport.
2260 2004-07-04 Martin Quinson
2262 - Redistribution between SG and RL.
2263 We wanna have to accept in SG, so move accepted related parts of RL in
2264 the common part. (more precisely, the dynar of all known sockets is no
2265 more a static in transport.c, but part of the process_data)
2267 [gras_stub_generator]
2268 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
2270 2004-07-03 Martin Quinson
2271 - Create a new log channel tbx containing dict, set, log, dynar (to shut
2272 them all up in one shot)
2274 - Fix the ugly case of reference to dynamic array.
2275 - New (semi-public) function gras_datadesc_size to allow the messaging
2276 layer to malloc the needed space for the buffer.
2278 - gras_socket_close now expect the socket to close (and not its address to
2279 put NULL in it after it). This is because the socket passed to handlers
2280 is one of their argument (=> not writable).
2282 - propagate the interface cleanup from last week in datadesc, ie remove a
2283 superfluous level of indirection. User pass adress of variable
2284 containing data (both when sending and receiving), and not of a variable
2285 being a pointer to the data. Let's say that I like it better ;)
2286 The price for that is constructs like "int msg=*(int*)payload" in
2287 handlers, but it's a fine price, IMHO.
2289 - Let it work in RL (yuhu)
2291 2004-06-21 Martin Quinson
2293 - porting SG plugin and SG select to new standards (works almost).
2294 - plug memleaks and fix bugs around.
2297 - cleanup the prototype of data recv and force users to specify when they
2298 want to handle references to objects. Test case working even for cycles.
2299 - plug memleaks. Valgrind is perfectly ok with this.
2301 2004-06-12 Martin Quinson
2303 - cleanup the separation between plugin and main code in plugin creation
2305 2004-06-11 Martin Quinson
2307 - Reput hook for raw sockets, needed for BW experiments
2308 - kill a few lines of dead code
2309 [Data description] Interface cleanup
2310 - gras_datadesc_by_name returns the searched type or NULL.
2311 That way, no variable is needed to use a type desc once, which makes
2313 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
2314 two parameters were strings (field name, type name), leading to
2316 [Dicos] Interface cleanup
2317 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
2318 This is consistant with the dynar API.
2320 2004-04-21 Martin Quinson
2322 - Porting to new standards.
2324 - interface cleanup.
2325 There is no bag anymore, no need to take extra provision to mask the
2326 pointers behind "ID".
2327 Better splitup of functions between files create/exchange/convert.
2328 This is still a bit artificial since convert and receive are so
2329 interleaved, but anyway.
2331 - add a queued message list to procdata (the ones not matching criteria
2333 - factorize some more code between SG and RL wrt procdata
2335 - use gras_exit in example to track memleaks
2336 - get rid of gs_example now that GS is properly integrated into gras
2337 - update run_test to integrate the lastest tests (datadesc)
2339 - rename WARNINGn macros to WARNn since it prooved error-prone
2341 2004-04-19 Martin Quinson
2343 - register init/exit functions within gras module mechanism
2344 - send/receive function.
2345 Convertion is not implemented, but short-cutted if not needed.
2346 struct/array elements are sent one by one (instead of block-wise), but
2347 nobody really cares (yet). Get a prototype before optimizing.
2348 - tests (using a file socket) for DD send/receive on:
2349 - base types: int, float
2350 - array: fixed size, string (ie ref to dynamic string)
2351 - structure: homogeneous, heterogeneous
2352 - chained list, graph with cycle
2353 Believe it or not, valgrind is not too unhappy with the results. The
2354 cycle happily segfaults, but the others are ok. And I'm sick of pointers
2358 - Bugfix when using a filename explicitely (instead of '-')
2360 2004-04-09 Martin Quinson
2362 - factorize more code between RL and SG in socket creation
2363 - Complete the implementation and tests of:
2365 o file (only in RL, and mainly for debugging)
2367 I lost 3 days to design a portable address resolver, and then decided
2368 that the prototype mainly have to run on my box.
2369 Addressing portability too early may be like optimizing too early :-/
2371 - use gras_init in the Tests instead of the crappy parse_log_opt
2372 (the latter function is removed)
2373 [Conditional execution]
2374 - New functions: gras_if_RL/gras_if_SG (basic support for this)
2375 [Code reorganisation]
2376 - Get rid of libgrasutils.a since it makes more trouble than it solves.
2377 Build examples against the RL library, since there is no way to disable
2378 its creation for now.
2380 For information, the beginning of coding on GRAS was back in june
2381 2003. I guess that every line has been rewritten at least twice since