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.
9 * Use default cmake things to detect lua instead of home grown ones.
12 * Split the doc into a user guide and a reference guide.
15 * Add an experimental interface to manipulate VMs. They are mainly
16 process groups with very few intrinsic semantic, but they should
17 allow you to build the semantic you want easily.
18 * New function: MSG_host_set_property_value()
19 * Deprecate functions MSG_global_init() / MSG_global_init_args()
20 Please use MSG_init() instead. (reducing the amount of entry
21 points in the library helps us).
22 * Make it impossible to link against the wrong version of the lib
23 * Bug fixes that made the host (and link) failures unusable.
26 * Bug fixes around the resource failures: don't let the processes
27 survive the host they are running onto
30 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
31 parallel task whose initial work is distributed among host according
32 to the Amdahl's law. Such tasks are created with a parameter alpha
33 that corresponds to the non-parallelizable part of the computation.
34 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
35 between two sets of workstations assuming a 1D block distribution (each
36 workstation owns a similar share of data) on both sides.
38 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
39 Data redistribution will be automatically scheduled once parent and child
40 are both scheduled. The filling of computation_amount and
41 communication_amount structures is now done seamlessly thanks to the chosen
43 * New function SD_workstation_dump to display various information
46 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
47 and renamed to xbt_str_hash() and xbt_str_hash_ext().
49 -- $date Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
51 SimGrid (3.7.1) stable; urgency=low
54 * Restore the prototype of MSG_process_create_with_environment() to
55 the pre-3.7 situation by removing the kill_time argument.
56 * Add a MSG_process_set_kill_time() function instead.
59 * Fix weird behaviors when dealing with parallel tasks.
62 * Simgrid is now built as a dll.
63 * Simgrid-java now works on Windows.
64 * Simgrid-Java is now included into Windows package.
67 * First pre-build package for MacOSX.
70 * Fix compilation when using MSG_USE_DEPRECATED.
71 * Fix some compilation issues on Macs and Windows.
72 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
73 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
75 We discovered that the Lua console is broken, but we are missing the
76 manpower to fix it right now. The problem existed in 3.7 too, so we
77 are not blocking the release for that. Sorry if you depended on this
78 feature, any help would be really welcome.
80 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
82 SimGrid (3.7) stable; urgency=low
84 The "spring cleanups (before the next Big Project kicks in)" release.
87 * We can specify the SMPI latency/bandwidth factor with command line
88 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
89 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
90 You can also use the "config tag" from platform file by adding this line
91 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
92 (see "example/platforms/tag_config.xml" to use "config tag").
93 Note that the command line supersedes the platform file configuration.
94 * Change the correction factors used in LMM model, according to
95 the latest experiments described in INRIA RR-7821.
96 Accuracy should be improved this way.
97 * Use the partial invalidation optimization by default for the
98 network too. Should produce the exact same results, only faster.
99 * Major cleanup in surf to merge models and split some optimization
100 mechanisms from the core of the models. As a result you can now
101 specify which model to use (e.g., --cfg=network/model:LV08
102 --cfg=cpu/model:Cas01) and which optimization mode to use
103 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
104 Incompatible combinations should err at initialization. See
105 --help-models for the list of all models and optimization modes.
106 * The CLM03 workstation model was dropped for simplicity because it
107 used the deprecated CM02 network model. Use default instead.
108 * Rename the TCP_gamma configuration option to network/TCP_gamma
109 * Rename the coordinates configuration option to
110 network/coordinates, and document it
111 * Use now crosstraffic keyword instead of the terribly misleading
112 fullduplex keyword. It is activated by default now in the current
113 default model, use --cfg=network/crosstraffic:0 to turn it off.
114 * Ongoing refactoring the model parsing to make XML files optional
115 See include/simgrid/platf.h for details (still to be completed)
118 * Major overhaul of the documentation. Almost instructive now :/
119 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
120 functions and friends. This interface was considered as
121 deprecated since over 2 years, it's time to inform our users that it is.
122 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
123 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
124 use these (crappy) functions in your code.
125 These functions will be removed soon. Stop using them now.
126 * Deprecate MSG_get_host_{table,number}
127 Implement MSG_hosts_as_dynar() instead.
128 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
129 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
132 * Stabilize the parallel execution mode of user contexts
133 * Introduce configuration variables to control parallel execution:
134 - contexts/synchro: Synchronization mode to use when running
135 contexts in parallel (either futex, posix or busy_wait)
136 - contexts/parallel_threshold: Minimal number of user contexts
137 that must be part of a scheduling round to switch to parallel
138 execution mode (raw contexts only)
139 * Fix bugs that prevented to use suspend/resume along with
140 synchronization structures.
141 * Fix bugs in process termination that lead to invalid memory access
142 in very specific conditions.
145 * Introduce a parallel mode for the models (controlled by surf/nthreads
146 configuration item). In our tests, running the models in parallel
147 never lead to any speedups because they are so fast that the gain
148 of computing each model in parallel does not amortizes the
149 synchronization costs, even when ultra fast futexes are used.
150 This is released anyway because YMMV.
153 * Performance boost by using a swag internally to compute the set of
154 tasks that are finished and should constitute the return value of
158 * Enable it by default now that it is considered rather stable.
161 * Documentation of the tracing functions.
162 * Performance gains when tracing categorized/uncategorized resource
163 utilization by avoiding calls to get route when updating resource
164 variables. LMM constraints are being used instead.
165 * API changed to set task categories. Use MSG_task_set_category instead
166 of TRACE_msg_set_task_category, and SD_task_set_category instead
167 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
168 * Bugfix for graphicator, routes not correctly obtained, memory leaks
169 * Examples for link user variables added (see at examples/msg/tracing/)
170 * Deprecated function TRACE_msg_set_process_category completely removed
171 * Trace header updated according to the latest Paje file format
172 * Tracing network lazy updates, no longer obligate users to use full updates
173 * --cfg=tracing/platform:1 also registers power/bandwidth variables
174 * Experimental: let user code declare/set/push/pop application states for hosts
175 * API changed to allow the manual creation of graph configuration files
176 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
179 * Improve the API of Lua MSG bindings, using the Lua spirit.
180 * Each simulated process now lives in its own Lua world (globals are
181 automatically duplicated). It helps writing simulators. Will allow
182 to run Splay programs within SimGrid in the future.
183 * Add a Chord example in Lua, equivalent to the MSG one.
186 * Start the implementation of a solution to express temporal
187 properties, not only local assertions. This is still an
188 experimental work in progress, stay clear from it to be safe.
192 - Add new runtime parameters --help-logs and --help-log-categories
193 to display informations about supported logging parameters and
195 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
196 don't exists anymore.
197 * Mallocators: allow value NULL for the reset function.
199 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
200 create homogeneous dictionaries, where all the elements share the
201 same free function. Non homogeneous dictionaries will be
202 deprecated in the next release.
203 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
204 - Multi-level dictionaries are deprecated.
206 - new function xbt_dynar_search_or_negative() that is useful when
207 you have less than 2 million elements in your dynar and don't
208 want of the extra complexity of catching exceptions when the
209 element is not found.
211 - Make xbt_os_thread module (for thread portability) public.
212 Documentation is still to come, sorry.
214 - Cleanups and simplifications to make it maintainable again.
215 - Exotic features (such as memalign and valloc) were removed.
216 - The metadata were extended and improved so that the
217 model-checker becomes able to explore and inspect the heaps.
218 - This may induce a performance drop when enable_model-checking is
219 ON in cmake (even if it's not used in the simulation), but it is
220 necessary at this point to get MC working.
222 Turn model-checking OFF if simulation performance matters to you.
223 Not enabling it at runtime is not enough, disable it in cmake.
225 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
227 SimGrid (3.6.2) stable; urgency=low
229 The "Not coding new stuff allows to polish old things" release.
232 * New bindings to the NS3 packet level simulator (experimental)
233 * Use the raw (efficient) execution contexts instead of the sysv
234 (portable) ones when possible.
235 * libpcre is now mandatory in any cases since not using it led to
236 severe performance loss and possibly other issues
237 * Update the XML platforms:
238 - G5K: include the latest machine in Nancy
239 - GridPP and LCG: new platforms
240 * Documentation was partially updated, at least (more to come)
242 Bug fixes, cosmetics and small improvements
243 * Free terminated processes before the end of the simulation to avoid
244 exhausting the memory of users having very dynamic amount of
246 * Bug fix and cosmetics about canceling non-running tasks
247 * Bug fix about the dot loader's issues when using libcgraph
250 * Create an installer for windows with nsis (amd64 and win32)
251 - Add an hello world project to illustrate simgrid project creation.
252 - Embed libpcre into the Simgrid installer to avoid
253 its compilation burden
254 * The raw execution contexts should work on Apple now
255 * Port to Windows 64 bits
256 - Sysv contexts now have an implementation for this arch
257 - GRAS communication features now support this arch
258 * Drop support for borland compiler on windows
259 - this code was not maintained, and we kinda depend on gcc nowadays
260 * Fix portability issues on kfreebsd/gnu: build error about semaphores
261 * Fix portability issue on unstable ubuntu: linker became picky on
264 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
266 SimGrid (3.6.1) stable; urgency=low
268 The "Oops, we broke Macs too" release
271 * Fixed contexts detection so that raw ones are used when possible
272 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
273 leads to a strange error, with user code segfaulting sometimes when
274 the generated code is not perfectly aligned (which is not
275 controllable from the user side, depends on the amount of code)
278 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
280 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
282 SimGrid (3.6) stable; urgency=medium
284 The Summer Release, also known as the "OMG! They Killed Kenny!" version
287 * Bindings now constitute their own package, separated from the main one.
288 Rationale: reduce our maintenance nightmare by reducing the module coupling
289 They will soon be released on their own on gforge.
291 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
292 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
294 GRAS: It is not considered as stable anymore, but experimental. Sorry.
295 * It's not quite deprecated for now because we have no replacement,
296 but it may soon become the case.
299 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
300 * Fortran: New user-level cache variable to store the rank of the running
301 process. This improves performance by an order of magnitude.
302 * C: New coccinelle script to automatically locate and modify global and
303 local static variables.
304 * Improved SMPI network model with a sender-side gap to account for multiple
308 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
309 only say if a communication is finished, no matter whether it succeeded or
310 failed. You can call MSG_comm_get_status() to know the status of a finished
312 * New function MSG_task_dsend() to send a task and detach it. When a
313 communication is detached, you are never notified of its success or failure
314 and the memory is released automatically once it is finished. This function
315 is useful when you don't care about the end nor the success of a
317 * Change the prototypes of action replay. Sorry for inconvenience,
318 but this is really more efficient this way (and to adapt your code,
319 you just have to fix the initialization, that shouldn't be too long)
320 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
321 ever managed to do anything useful with it.
322 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
323 takes a dynar of communications. It returns immediately and gives the
324 index of a finished communication (if any).
325 * New example: a basic implementation of the Chord P2P algorithm.
328 * New model for multi-core CPUs. You can now use the core attribute to
329 precise the number of cores of a host. This is a basic model. Every
330 process running on the host receives at most the power provided in
331 the DTD (throughput<=power). Total throughput of process cannot exceed
333 * New peer tag. This peer tag creates a tiny AS comprising a host and a
334 router linked by an up-link and a down-link (possibly asymmetrical).
335 This kind of pattern allows to easily build last-mile model style platforms.
336 Aggregating such patterns in a rule-based AS is thus the technique of
337 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
338 * New model for Vivaldi routing. We transformed the Vivaldi network model
339 into a Vivaldi routing model (based on the rule-based model). This allows to
340 combine Vivaldi based latencies with last-mile platforms.
343 * Added a check for NaN of IEEE754 infinite in the double entries of
345 * Introduce a new context factory "raw", highly inspirated from the
346 ucontext factory, but using manually crafted functions in assembly to
347 do the work in an efficient manner.
348 * Allow to change the used context factory at run time, not only at
349 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
350 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
351 contexts at runtime (only with raw contexts or ucontexts).
352 * Completely rewrote this module to allow parallel execution of user
353 processes. Use --cfg=contexts/nthreads:N to execute user processes
354 with N parallel threads (the default is 1, meaning no parallelism).
355 * Allow to decide dynamically between sequential and parallel modes.
356 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
357 processes in parallel only when their number is greater than or equal to P
359 * Added a check for NaN of IEEE754 infinite in the double entries of
363 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
364 won't output the state of processes when interrupted with Ctrl-C
365 * Add a new function xbt_dynar_to_array that transforms a dynar into a
366 NULL-terminated array. This may solve backward compatibility issues
367 due to the change to return type of SD_simulate. See also:
368 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
369 * Add new macros with variable number of arguments.
370 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
371 - in xbt/asserts.h: xbt_assert
372 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
373 - in xbt/ex.h: THROWF and RETHROWF.
374 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
376 * Change xbt_die() to accept a format string with arguments, just like printf.
377 * New data structure: xbt_lib_t, like a dict but more general and with better
381 * New configuration options
382 Options triva/categorized and triva/uncategorized can be used to generate
383 graph configuration files for Triva visualization tool.
384 * Configuration option tracing/platform is renamed to tracing/categorized
385 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
386 * New TRACE_user_link_variable interface:
387 User provides the name of the link and the tracing variable to attach to it
388 * the declaration of tracing categories must be done after the environment
390 * simpler tracing interface, just one way to declare categories
391 TRACE_category or TRACE_category_with_color, it is up to you
392 * links in the trace file are again identified by their names
393 * trace contains the full platform hierarchy exactly as declared using the ASes
394 * Options tracing/msg/[task|process]:1 groups the process by hosts
395 for both cases, tasks and processes must have names that are unique during the simulation
396 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
397 * The experimental option tracing/msg/volume is deprecated
398 its functionality may be reincorporated if needed
400 The tracing generates a trace file with unordered timestamped events,
401 because of the way the core simulator (surf) works. A script available
402 at the tools directory (fix-paje-trace.sh) can be used to put the events
403 in order. We have changed the tracing so it can generate ordered timestamped
404 events in the final trace, but depending on the simulator (and how much time
405 is simulated) that can lead to a huge memory utilization. It is deactivated
406 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
409 * Define a SIMGRID_VERSION macro in simgrid_config.h.
410 - We are trying hard to keep the API stable, but it may happen that
411 some things change (we're a research project after all, not a
412 nuclear plant operating system). If such things should happen, you
413 could rely on that macro to adapt.
414 - current value: 30600 for 3.06.00, aka 3.6
415 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
416 a number that can be compared with SIMGRID_VERSION.
417 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
418 assertions and verbose/debug logging events are disabled at compile time.
420 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
422 SimGrid (3.5) stable; urgency=medium
425 * New feature to any SimGrid-based simulator: Model-Checking
426 Check SIN#1 for more details.
429 * New Model SMPI (three-interval linear regression for correction factors)
430 See RR-7426, available at http://hal.inria.fr/inria-00527150
431 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
432 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
433 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
434 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
435 * See also src/smpi/README
440 - Tracing API changes: TRACE_start and TRACE_end should not be called
441 by user-code. They are automatically called by simulators created
442 with SimDAG, MSG and SMPI if the toolkit is compiled with
443 tracing_enabled=ON. Categories declaration and utilization remain the
444 same for MSG and SimDag.
445 - A function was added to the tracing API to declare categories with
447 - TRACE_category_with_color (char *category, char *color)
448 where color must be in the following format
449 "%f %f %f", red, green, blue
450 and red, green, blue are float values in the interval [0, 1]
451 - User can specify NULL as color parameter, or continue calling
453 On that case, the tracing system will define random colors
454 - The following command-line options are supported:
455 --cfg=tracing/filename:msg.trace
456 --cfg=tracing:1 (activate tracing, needed to use others)
457 --cfg=tracing/platform:1 (categorized resource use)
458 --cfg=tracing/uncategorized:1 (uncategorized resource use)
459 --cfg=tracing/msg/task:1 (task creation)
460 --cfg=tracing/msg/process:1 (process creation, migration)
461 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
462 --cfg=tracing/smpi:1 (SMPI interface tracing)
463 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
464 - examples of examples/msg/tracing updated
466 - DAXLoader and DOTLoader functions can generate tasks with categories
467 - A new function to attribute a category to SD tasks:
468 TRACE_sd_set_task_category (SD_task_t task, char *category)
469 * Tracing the MPI interface implemented by SMPI
470 - Collective operations are traced with states
471 - Point-to-Point operations are traced with states/links
472 - Tracing activated by a parameter "-trace filename" passed
473 to smpirun during execution (considering that simgrid
474 is compiled with tracing enabled)
475 - To run the simulation with gdb, the simulator
476 accepts --cfg=tracing/smpi:1 to trace SMPI
477 - tesh files to check if smpi tracing is ok
478 - See examples/smpi/NAS/DT-trace
479 * GTNetS tracing re-worked
480 - adaptation to the tracing system of GTNets to cope
481 with modifications regarding the fullduplex mode
482 - new tesh files to check if gtnets tracing is ok
485 * Asynchronous communications through the functions:
486 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
487 * New function: MSG_load_platform_script()
488 to make possible using a lua script instead of XML files to set up platforms
489 * New function: MSG_set_function
490 to associate functions to processes, used when bypassing the parser
491 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
493 Platforms: Add some more examples in examples/platforms
494 * Grid'5000: see www.grid5000.fr
495 * *_30000_hosts.xml: various huge files [mainly scalability testing]
498 * Change the XML format. This is a very important modification. SimGrid
499 3.5 introduces a new hierarchical format based on the notion of
500 Autonomous Systems. Compatibility with old format is ensured
501 through the perl script provided in the install bin directory
502 bin/simgrid_update_xml.
503 It is now possible to build platforms with specific routing
504 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
505 connect several platforms together. We will try to provide soon
506 set of realistic platforms exploiting these properties (have a
507 look at examples/platforms/ for the moment).
508 * Take the opportunity of the XML format change to be a good XML citizen:
509 rename link:ctn to link_ctn and similar changes (also dealt with by
511 * Add a new routing scheme (rule-based) using regular expressions. It
512 enables to have an extremely low memory footprint when the
513 underlying routing is simple and can be compactly described. You
514 need to have libpcre4-dev (perl regular expressions) installed if
515 you want to use this routing scheme.
516 * Revive the cluster TAG and allow to easily and efficiently (both in
517 term of memory and speed) connect clusters together. Have a look
518 at teshsuite/simdag/platforms/ to see how this can be done. With
519 this tag, you can create clusters with thousands of tasks at no
520 cost (have a look at examples/platforms/).
521 Note: clusters are implemented as ASes, so there is no need for an
522 enclosing AS tag if you have only one cluster in your platform.
523 * Add new generic functions in the public interface that allows the user
524 to call SURF 'create_resource' methods from your code (same
525 functionality as the XML bypass mechanism but with a much lighter
527 * Add a new model (enabled through command line --cfg=network/model:SMPI)
528 that uses a piecewise linear approximation to produce better
529 results when exchanging small messages.
530 * Add a new parameter to handle correctly full duplex link and account
531 for interferences between uplink and downlink communications
532 (activate with --cfg=fullduplex:1).
535 * Rename the SD_READY (all dependencies are satisfied and task is
536 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
537 dependencies are satisfied) state.
538 This prevents a confusion between the notion of "ready to schedule"
539 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
540 simulated" (SD_RUNNABLE) used by the simulation kernel.
541 * Change the way a task is considered as ready. Instead of removing
542 dependencies when a task is done, a counter is decreased. This way,
543 it is always possible to reach ancestors thanks to the
544 SD_taks_get_parents function (even after the end of the simulation.)
545 * Change the return type of SD_Simulate from (SD_task_t*) into
546 xbt_dynar_t. This function was in handling a dynar internally and
547 converted it into a NULL terminated array for historical reasons.
548 * New function SD_dotload(char*) to load a DAG described in dot
549 format. This loader and the corresponding examples require the
550 installation of the graphviz library.
551 * Fix a bug in the management of tasks of size 0 in the surf network
552 models. This problem was only visible with SIMDAG and you should
553 thus disregard results produced with earlier versions if you
554 relied on this feature (some tasks were blocked because of this).
555 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
556 even though your applications were doing only point-to-point
557 communications and sequential computations. Now you can really use any
558 model you want (of course, if you create real parallel tasks, which are
559 not implemented in most models beside ptaskL07, this will abort).
560 * Add an example that schedules a DAX on an heterogeneous platform
561 using a Min-Min strategy.
562 * New function SD_workstation_get_current_task() that returns the kind
563 of task currently running on a workstation in the sequential access
565 * Raise some warnings when unexecuted tasks remains at the end of the
566 simulation. This is usually caused by cycles in the DAG.
569 * New function: SIMIX_process_set_function() called by MSG_set_function
570 * Change the underlying waiting queue in semaphores so that a process
571 can wait on several of them simultaneously (as in waitany).
572 * Fix the way to handle tokens in semaphores so that all access patterns
573 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
574 * kill the dirty pimple SIMIX_message_sizes_output()
575 Please use (proper) visualization instead
578 * New data container: setset (set of sets of elements)
579 * New module: mmalloc (mapped malloc, allowing to have several
580 independent segments of malloc)
581 * New function: xbt_dict_cursor_set_data()
582 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
583 * New function: xbt_dynar_is_empty()
584 * New function: xbt_fifo_get_last_item()
585 * Fix xbt_dynar_shrink(): use the right element size.
586 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
587 uninitialized areas during expand.
588 * Fix semaphores: previous implementation was severely broken.
589 * Use library init/fini functions for our initialization.
590 - you can use logs and other feature as soon as you want in your
591 code (even before the xbt_init / MSG_init)
592 - xbt_exit is now a no-op and produce a warning when used.
595 * Port GRAS to new SIMIX mechanisms. This allows gras users to
596 benefit from the latest improvement to the simulation kernel.
597 * Kill measurement sockets for now. If you rely on them, sorry. This
598 release is not for you. This feature will be reintroduced in the
599 future, but we cannot delay the release any further.
600 * New function: gras_msgtype_get_name().
601 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
602 * Fix (at last) the pmm example: it should not randomly fail anymore.
604 Build chain: bug fixes and overall polishing
605 * Cmake is now stable enough. Hence, we killed the autotools.
606 * Port to windows ( TM :)
607 * Fix the 'make install' target.
608 No need to use 'make install-simgrid' anymore
609 * Introduce a 'make dist' target compiling a *source* archive
610 'make package' compiles a binary archive
611 * Compile java files only on need
612 * Add --cd and --setenv command line options to tesh
613 * Out of source builds are not fully supported yet, but we are close
614 * Enable supernovae and optimization flags by default for our users
617 * Add layer to set up environment directly from lua, without XML.
618 * The effect of gras_stub_generator can be achieved through
619 lua too (check examples/gras/console/ping_generator.lua)
621 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
623 SimGrid (3.4.1) stable; urgency=low
625 The "Polishing easter eggs is probably a good idea" release.
626 This is a bug fixes release only.
630 * Fix a bug preventing the tasks from begin garbage collected.
633 * Fix a bug occuring when a host involved in a communication fails.
634 This was not detected properly by the other peer involved in the
635 communication. Now, it's reported as a network error.
638 * Warn the user about loop dependencies in data flow of DAX files
639 * Obey the control-flow dependencies of DAX files
642 * Add option "enable_smpi" allowing to not compile SMPI.
643 Probably useful for the (Mac) users experiencing a build error here
644 * Improve the detection of lua5.1 and ruby1.8
646 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
648 SimGrid (3.4) stable; urgency=low
650 The "Easter in Cargese" release. Also known as (major changes):
652 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
653 ~> bindings were greatly improved
654 ~> new tracing infrastructure for better visualization introduced
656 * the "Welcome to configury modernity" release.
657 ~> we switched from autotools to cmake, and improved our cdash
660 A more detailled list of changes follow (full detail in svn log).
662 Java Bindings: Various Cleanups
663 * (install java-gcj-compat-dev on debian-like to use them)
664 * Remove put/get: no need to export deprecated interface in Java
665 Use send/receive instead.
666 * Cleanup the examples and add a README per directory
667 * Remove example autoDestination (that's the only way to go now)
668 * Remove example explicitDestination (was a plain copy of basic)
669 * Make JniException a runtime exception, so that there is no need to
670 declare the fact that you may encounter such a beast. I guess that
671 nobody will ever want to survive such error.
672 * Create specific errors for each MSG case of failure:
673 host failure, transfer failure, timeout, task cancelled
674 * Cleanup the exceptions that may get thrown by each function
675 * Other internal cleanups in Java bindings. Performance still bad :/
676 Ruby and Lua Bindings: create them
677 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
678 * That's new and great, you should try them out.
679 Same functionalities than Java bindings, only even less polished
681 * Kill the useless "rate" argument of SD_task_get_execution_time()
682 Everyone used to provide -1 as a value, it was not used, and the
683 semantic of a possible use wasn't even clear.
684 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
685 either as comm costs or compute costs to mean that there is no
686 such thing for that specific task.
687 * Add a SD_task_set_name() function
688 * Fix SD_task_unschedule() on typed tasks
689 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
690 * In DAX loader, accept useless 'level' attributes to <job> since
691 LIGO DAGs have them (seem to be to ease graphical representation).
693 * Add an example masterslave_mailbox.c using send/receive and not
694 the deprecated put/get interface.
695 * Kill the MSG_paje_output() function. It's a noop since 2 years.
696 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
698 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
699 (declare MSG_USE_DEPRECATED to still have the old name)
700 * Add a MSG_task_set_data() function
701 * About trace replay (see examples/msg/actions):
703 - Allow to work with splitted trace files for each process
704 Give the specific trace file as argument of each process,
705 and call MSG_action_trace_run(NULL)
706 You can still have one merged file for all processes.
707 - Fix implementation of collective operations
708 * Allow task_execute() on 0-sized tasks (closes #10063)
710 * This is the first release of SimGrid where SMPI is not considered
711 beta anymore (even if some corners should still be improved)
712 * Port over the new SIMIX_network submodule (internal refactoring)
713 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
714 * Implement more missing elements of the standard:
716 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
718 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
719 MPI_Scan() MPI_Get_processor_name()
720 - Added implementation of missing case for Alltoall (warning: it's
721 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
722 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
723 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
724 SMPI_MPI_Allgatherv()
726 - MPI_Waitsome() was broken
727 - Allow relative includes in smpicc
728 - Command line cfg argument 'reference_speed' was ignored...
729 - Some functions did not properly lead to auto-benching of user code
730 - smpicc passes -O2 by default (just like openmpi one)
732 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
733 * Bug fixes about timeouts during communications
734 * add SIMIX_message_sizes_output() as a pimple to write to file the
735 amount of messages per size. Use gnuplot to get histogram.
736 Pimple because that's the only user-visible function of simix,
737 defined directly in xbt.h (irk, sorry)
739 - Add a SIMIX_sem_get_capacity() function
740 - Fix interactions with processe resume/suspende
741 - release_forever() was stupidly broken
742 - Fix SIMIX_display_process_status() for processes in a semaphore
743 - Make SIMIX_sem_block_onto() user-visible
744 * Refactoring context stuff:
745 - Use pseudo-OOP for better modularity
746 - reimplement SIMIX_process_kill() without process_schedule() so
747 that the latter can take as invariant that it is called from
749 - Merge context_start into context_new for sake of simplicity
751 * Add a Vivaldi network model, coded live during SUD'10 ;)
752 * Rename configuration variables to start a hierarchy:
753 o cpu_model -> cpu/model
754 o network_model -> network/model
755 o workstation_model -> workstation/model
756 * New configuration variables:
757 o network/bandwidth_factor: correction to bandwith
758 o network/latency_factor: correction to latency
759 o netwotk/weight_S: correction to the weight of competing streams
760 * Add a long description to the models, that users can see with such
761 argument on the command line: --cfg=cpu/model:help
762 * --help-models display the long description of all known models
764 * config: add the ability to set a default value after registration
765 Does not override any previously set value (e.g. from cmd line)
766 * dict: allow to have integer key and data.
767 When so, you need to use the following functions
768 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
769 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
770 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
771 In contrary to regular dicts, the key is not malloced before copy.
772 Mixing scalar and regular elements in the same dict is not tested
774 * Allow to use xbt_dynar_shrink() to expend the dynar instead
775 Tracing for Visualization:
776 * SimGrid is now instrumented in order to generate a trace file for
777 visualization analysis: to use it, need to compile SimGrid with the
778 "tracing" option enabled, and instrument the program using SimGrid with
779 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
780 (among other functions).
781 * The instrumentation only traces the platform utilization for now
782 * Documentation to use the tracing functions and how to analyze the
783 traces with the Triva tool is written.
784 * More information about: SimGrid FAQ (in the section Tracing Simulations
787 * We moved to cmake as default build system. Autotools support will
788 be dropped soon. Check the FAQ for more info about how to use it.
789 * Greatly improved our cdash/ctest interactions
790 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
791 * Added memory checking tests with valgrind; lot of memleak fixing.
792 This may be the first release of simgrid with so few memory issues
793 * Added code coverage tests.
794 Our coverage is still improvable, but at least we see it on cdash.
796 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
798 SimGrid (3.3.4) stable; urgency=low
800 The "Desktop Grid needs love too" release (also called Xmas release).
803 * Major speedup in the maxmin system solving by using lazy evaluation
804 Instead of solving completely the maxmin system at each iteration,
805 only invalidate (and recompute) the modified parts.
806 This new feature is enabled in default models but you can try to
807 turn it on with "--cfg:maxmin-selective-update=1" for other models.
808 * Cas01 IMproved as default CPU model
809 This CPU model is the same Cas01 model, but it uses the
810 maxmin-selective-update flag and a heap structure to manage
811 actions on SURF kernel.
812 It reduces the complexity to find the next action to finish and,
813 consequently, it's faster than the old Cas01.
814 This is the new default CPU model (Cas01).
815 * Rename the old Cas01 model to Cas01_fullupdate
816 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
817 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
818 * CpuTI (CPU Trace Integration)
819 A new CPU model whose objective is simulate faster when using
820 availability trace files.
821 Instead of using a full featured, over engineered maxmin system for
822 CPU modeling, this model does the pre-integration of traces files
823 to calculate the amount of CPU power available, and so, executes
824 faster than the old CPU models.
825 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
826 * Use LV08 as default network model since it gives better accuracy
827 for small messages and shouldn't change things for big ones.
828 Use --cfg=network_model:CM02 to get the previous behavior.
831 ******************************************
832 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
833 ******************************************
834 * The new CPU model may changes simulations!
835 The point is that events occurring at the exact same timestamp
836 are not scheduled in the same order with the old and new
837 version. This may be enough to completely change the execution
838 of simulations in some cases.
839 * The new network model will change simulations!
840 This new model is more realistic than the previous one, so you
841 should consider redoing your old experiments with this model.
842 Sorry for the inconvenience.
845 * Introduce the supernovae compilation mode
846 When compiled that way, the whole SimGrid (or almost) is put in a
847 single compilation unit and compiled in one shoot.
848 This is to help gcc which has difficulties to inline stuff from one
850 The speedup seem to be above 15%, althrough more tests are needed on
851 amd64 to confirm that gain.
854 * Port of MSG's mailbox on top of SIMIX network
855 The put/get mechanism was greatly simplified on the way.
858 * New SIMIX network module. Provides:
859 - Mailbox: rendez-vous mecanism to find with who you want to speak
860 - Synchronous send/recv: easier and hopefully faster since the
861 logic is handled in the maestro process directly now
862 - Asynchronous send/recv: you dreamt of it? It's here now
863 Too bad that nobody cared enough to propagate the change to MSG.
864 * Add semaphores as SIMIX synchronization mechanism.
867 * new function SD_daxload(char*) to load a DAX file
868 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
869 * Introduce typed tasks. Specify its kind and cost at creation.
870 At scheduling, just give where it should be placed, and the cost
871 for each involved resource is automatically computed.
872 Existing constructors so far (more to come of course):
873 - SD_task_create_comm_e2e() for end-to-end communication
874 - SD_task_create_comp_seq() for sequential computation
875 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
876 * new function SD_task_dump() for debuging display
877 * new function SD_task_dotty(task,FILE*) writing to file the info
878 about the task in dotty format
879 * SD_task_dependency_exists() can now cope with having one of its
880 arguments NULL. If so, it tests whether the other argument has any
882 * Add getters on list of preceding/following tasks:
883 SD_task_get_parents(task) and SD_task_get_children(task)
884 * Add getters on amount of workstations and list:
885 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
886 * Add getter on task kind: SD_task_get_kind(task)
887 * Update the start_time and finish_time of tasks on completion/failure
888 * Bugfix: Remove task from state swags when destroyed
891 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
894 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
895 dynar with one separate thread per value of the dynar.
896 * Change the prototype of xbt_thread_create(), sorry.
897 Added a boolean parameter indicating whether we want to join this
898 thread (used in SG only for now)
899 * Implement xbt_thread_join and xbt_thread_yield in SG also.
902 * GTNetS wrappers should now be usable again (and betterly tested too)
903 * Fix a major regression from 3.2 where the timeout provided to
904 MSG_task_put_with_timeout() was used as absolute time before which
905 the comm should be done.
906 * Start to fix the <cluster> tag.
907 - Internal links should be good now (beside of the loopback, which
908 use the private link instead)
909 - paths to the external world is still rather broken
910 - the <route:multi> tag is just broken. Actually that's brain-dead.
911 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
912 to make it less stupid
913 ** Check your platform with teshsuite/simdag/platforms/flatifier **
914 * Fix a source-level compatibility glitch from 3.2: after defining
915 MSG_USE_DEPRECATED, you can use the old name
916 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
917 * Allow to compile from the SVN with automake 1.11
918 * Fix some problems when using the "start_time" tag in deployment XMLs.
919 * Fix #8569: XBT/synchro.h has redundant declarations
920 * Fix #8563: MSG return values and exceptions
921 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
922 * Integrate patch #8636: Obey DESTDIR when installing documentation.
923 Thanks to Robson Peixoto.
924 * Fix a vicious bug in dictionaries inducing that some elements were
925 not freed on xbt_dict_free()
927 Portability report of this version:
928 * Main portability targets:
929 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
931 - mac leopard on i386
932 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
933 but nothing critical.
934 * Other platforms: windows, AIX and others were not tested for this release
936 Timing report of this version:
937 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
938 scenario parameters). From 8h to a few seconds in desktop grid settings.
939 * Supernovae brings about 25% speedup on i386.
941 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
943 SimGrid (3.3.3) stable; urgency=low
945 The "Need for Speed" release.
947 The timings done to validate the 3.3.2 were faulty.
948 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
950 The problem was a conversion from a manually handled vector to
951 xbt_dynar_t on the critical path.
952 xbt_dynar_foreach calls functions, inducing stack management crap.
954 We inlined these functions and xbt_dynar_foreach is now breath taking.
955 We also inlined xbt_swag_belong on the way.
957 Here are some approximate speedup measurements (on master/slaves
958 simulations lasting between 10s and 20s each):
959 3.3.1 -> 3.3.2: about same performance
960 3.3.2 -> 3.3.3: 40% speedup
961 3.3.1 -> 3.3.3: 40% speedup
962 3.3.1 with inline patch -> 3.3.3: 30% speedup
964 Our reading is that the refactoring which occurred in 3.3.2 made us
965 suffer much more from the xbt_dynar_foreach low performance, but
966 once we solved this, this refactoring proved to be very performance
967 effective. From the 40% speedup, somehow, 10% are due to the
968 inlining and 30% to the refactoring.
970 That's a pitty that gcc cannot inline functions placed in other files
971 alone. We have to choose between:
972 - break the encapsulation (by putting private data structures and
973 accessors in headers files to help gcc)
974 - live with low performance
975 - switch to a decent compiler such as icc (not quite possible).
977 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
979 SimGrid (3.3.2) stable; urgency=low
981 The "Simplicity does not preceed complexity, but follows it" release.
983 The main contributors of this release were (lexical order):
984 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
987 * Extract the routing logic into its own object.
988 (was dupplicated in network.c and workstation_LV07.c;
989 Allows to implement other ways of storing that info)
990 => kill now useless network_card concept
991 - Use dynar to represent routes (instead of void** + int*)
992 - kill link_set (use surf_network_model->resource_set instead)
993 - Add a command-line option to choose the routing schema to use
994 - Add three new models:
995 * Floyd (shortest path computed at initialization)
996 * Dijikstra (shortest path recomputed all the time)
997 * Cached Dijikstra (shortest path computed on need)
998 All these models where contributed by Silas De Munck, and are
999 described in his ICCS09 paper.
1001 * Simplify model declaration
1002 (less redirections, less function to write when defining a model)
1003 - Factorize stuff between models:
1006 surf_model_resource_set(model)
1007 surf_model_resource_by_name(model, name)
1008 - Unify the types of models in s_surf_model_t (using an union)
1009 - Embeed fields of common_public directly into s_surf_model_t
1010 - Rename model methods:
1011 action_free ~> action_unref
1012 action_change_state ~> action_state_set
1013 action_get_state ~> action_state_get
1014 - Change model methods into functions :
1015 (model)->common_public->action_use ~> surf_action_ref
1017 * Implement a generic resource; use it as ancestor to specific ones
1018 (allows to kill duplicated code in models)
1019 Drawback: timer command don't need no name nor properties;
1020 workstation_CLM03 don't need no properties
1021 (but I guess we can live with those few bytes wasted)
1023 * Improve the action object model
1024 - implement a constructor avoiding dupplicated code about field
1025 initialization in generic_action part.
1027 * Kill the SDP model: it has an external dependency, is deprecated
1028 in flavor of modern lmm models, and didn't compile since a while
1031 * Relocation of the context module from XBT to SIMIX.
1032 (the context were decoupled from the simix processes, duplicating a lot of code)
1033 => a lot of code was factorized
1034 - less overhead is introduced during scheduling
1035 - simpler API for the context factory
1036 - the logic for process creation,destruction and manipulation was simplified
1037 * Simplification of the s_smx_process_t data structure.
1038 => accesing the simix level data associated to a process is faster now,
1039 and the code is a lot more readable.
1042 * Implement some more MPI primitives:
1043 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
1044 -implementation: Bcast: flat or 2-ary tree (default),
1045 Barrier: 4-ary tree,
1047 Allreduce: Reduce then Bcast
1048 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
1049 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
1050 Alltoallv: flat tree, like ompi
1052 * Add support for optimized collectives (Bcast is now binomial by default)
1053 * Port smpirun and smpicc to OS X
1056 * Kill SD_link_get_properties: hard to maintain and makes very little sense
1057 Shout out if you used it.
1060 * Display the list of still queued messages in SG mode when existing
1064 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
1065 * Add xbt_graph_node_get_outedges() [Silas De Munck]
1066 * Add xbt_str_from_file(FILE*)
1067 * Add xbt_dict_get_key achieving a linear reverse search
1068 * Remove the context module
1070 Portability report of this version:
1071 * Main portability targets:
1072 - Linux(debian)/x86/context
1073 - Linux(debian)/x86/pthreads
1074 - Linux(debian)/amd64/context
1075 - Linux(debian)/amd64/pthreads
1076 On these, we still have the eratic breakages of gras/pmm and
1077 amok/saturate_sg reported in previous version. We still think
1078 that the tests are the cause of the fault, not the tested code.
1080 - Mac OSX Leopard/x86/context
1081 Still false negative in tesh autotesting.
1082 Smpi still fails, but this time because readlink does not accept -f
1083 Everything seems to work properly beside of that.
1086 - AIX version 5.3 (only tested contexts this time)
1087 Smpi still fails there because mktemp is not installed.
1088 Everything seems to work properly beside of that.
1090 I managed to compile it for the first time, but several breakages.
1091 Won't delay the release for this exotic platform.
1093 * Windows: it's still lagging behind. If you want to help, please
1096 Timing report of this version:
1097 This version seem to be more than 5% faster than 3.3.1 (on linux
1098 64bits with contextes). The gain is less than expected, we are
1099 investigating this for next release.
1101 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
1103 SimGrid (3.3.1) stable; urgency=low
1106 * Implement a --cfg-help to show existing configuration variables
1107 * Build chain do not require doxygen in maintainer mode
1110 * fix a bug on struct sizeof computation, which prevented the
1111 exchange of arrays of structs in some conditions
1112 - added a regression test about this in datadesc_usage
1113 * Allow the exchange of 0-long dynamic vectors.
1114 - for that, use -1 as indicator of dynamic size instead of 0
1115 - This implied to change any size from unsigned long to long,
1116 reducing a bit communication abilities, but I guess that with
1117 64bits being quite common, this is more than enough.
1118 - This also induce a protocol change, thus bumping network protocol
1119 version from 0 to 1 (if we have external users, we have to get
1120 clean on that point too ;)
1121 - added two regression tests about this in datadesc_usage
1122 * Be more verbose when propagating local exceptions
1123 This helps debugging.
1124 * Display the status of simulated processes when receiving SIGINT in
1128 * Allow to control the simulation from a trace file.
1129 New functions MSG_action_register() and MSG_action_trace_run()
1130 The first one allows to associate a function execution to each
1131 kind of action while the second one parses a trace file and
1132 triggers the corresponding actions within the system.
1133 For now, only a toy example is provided in examples/msg/actions
1134 * Add an exemple of process migration in examples/msg/migration
1135 * Fix a bug in task exchange which broke MSG_task_get_sender()
1136 Add a teshsuite regression test for that.
1137 [Bug: if MSG_task_get_sender() is called after sender exit,
1139 * Fix a bug which prevented suspend/resume to work properly
1140 * Display the status of simulated processes when receiving SIGINT
1141 This fixes a regression of v3.3. due to the introduction of SIMIX
1142 * Bug fixing in failure management:
1143 - trace could not start by a failure at time 0
1144 - failure during communications were not working
1147 * Add SIMIX_process_set_name() to change the name of the current
1148 process in the log messages.
1149 * Store smx_hosts in a dict since we only retrieve them by name
1150 * Move the configuration infrastructure to surf
1153 * Move the configuration infrastructure to surf
1156 * Massive internal cleanups:
1157 - Store internal structures on processes instead of hosts (allows
1158 to have more than one process per host, in addition of being more
1160 - Cleanup the initialization/finalization process
1161 - Kill a whole bunch of unneeded synchronization:
1162 processes run in exclusive manner within the simulator
1163 - Move queues from global tables to process data fields
1165 - now accept -platform and -hostfile arguments
1166 - Pass the right rank value to processes according to the hostfile
1167 * Compile the examples by default, and use them as regression tests
1168 * Implement MPI_Wtime()
1169 * Change the reference speed to a command line option
1172 * TCP_gamma can now be specified as command line option using
1173 --cfg=TCP_gamma:10000000.0
1174 * Change the --surf-path cmd line option into --cfg=path:
1177 * Also include strbuff from xbt.h public header
1178 * xbt_ex_display(): do not free the exception after displaying
1179 This allows to do more with the given exception afterward.
1180 Users should call xbt_ex_free() themselves.
1184 Portability report of this version:
1185 * Main portability targets:
1186 - Linux(debian)/x86/context
1187 - Linux(debian)/x86/pthreads
1188 - Linux(debian)/amd64/context
1189 - Linux(debian)/amd64/pthreads
1190 These targets fail about 1/10 of times on gras/pmm, but we believe
1191 that this is because of the test, not because of simgrid.
1192 amok/saturate_sg fails even more rarely, and the test may not be
1195 - Mac OSX Leopard/x86/context
1196 The test suite still spits tons of errors because some obscure
1197 force prevents us from removing the temporary directories
1198 arguing that they still contain some metadata I've never heard of.
1199 Smpi fails because seq is not installed.
1200 Everything seems to work properly beside of that.
1203 - AIX version 5.3 (both contexts and pthread)
1204 Smpi still fails there because mktemp is not installed.
1205 XML inclusions seems rosty on AIX.
1207 * Windows: it's still lagging behind. If you want to help, please
1210 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
1212 SimGrid (3.3) stable; urgency=high
1216 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
1217 [Malek Cherier & Mt]
1219 * Introduce the SIMIX module: factorize code between MSG and GRAS.
1222 Until now, GRAS were using MSG as an interface to SURF. It was
1223 quite difficult because both interface have several differences
1224 (MSG channels vs GRAS sockets were the most notable point).
1226 This also opens the gate to SMPI (which should occur soon) and speed
1227 up simulations by to 40% (even if it were not the main goal).
1229 **************************************
1230 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
1231 **************************************
1232 The point is that events occuring at the exact same timestamp are
1233 not scheduled in the same order with the old and new version. This
1234 may be enough to completely change the execution of simulations in
1235 some cases. Sorry for the inconvenience.
1237 * Cleanup and upgrade the XML format to push further scalability
1238 issues (check http://hal.inria.fr/inria-00256883/ for more info)
1240 * Improve the testing infrastructure with tesh. Now a very large part of
1241 the code is tested not only by being run but also by checking that the
1242 output match an expected output [Mt].
1244 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
1245 is really less memory-demanding, which should allow you to use
1246 larger files in SimGrid [AL].
1248 * Inform valgrind about our contextes, so that it becomes usable
1249 with the default (and more effecient) version of SimGrid
1250 [contributed by Sékou Diakite, many thanks]
1253 * Introduce a listener thread in charge of receiving incoming
1254 messages from the network. It allows to overlap communication and
1255 computation but most notably, it removes some stupid deadlocks due
1256 to the fact that so far, a process could not send and receive at
1257 the same time. This made most non trivial communication schema
1259 * Convert the PIDs from long int to int to match the MSG ones (and
1260 linux ones too) [Mt]
1261 * New function: gras_agent_spawn() to launch a new process on
1262 current host. Only working in simulation for now. [Mt]
1263 * New function: gras_os_hostport() returning a constant form (ie,
1264 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
1267 * Make the backtrace of exceptions more human readable [Mt]
1268 * New module: xbt/str [Mt]
1269 a ton of string utility functions (split, join, printf to a newly
1270 allocated buffer, trim, etc)
1271 * New module: xbt/hash [Mt]
1272 SHA1 hashing algorithm (more to come if needed)
1273 * New module: xbt/synchro [Mt]
1274 synchronization tools (mutex and conditions) working the same way
1275 in simulation and in real life (mainly useful for GRAS, but not
1277 * New module: xbt/queue [Mt]
1278 classical producer/consumer synchronization scheme
1279 * xbt_dynar_new_sync() creates a synchronized dynar. All access
1280 (using the classical functions will get serialized) [Mt]
1281 * Make dictionary internal table dynamic. No need to specify its size
1282 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
1284 * Make sure the log channels are organized as a tree under windows
1285 (because of ANSI C compatibility issue, any channel were child of
1286 root directly) [Mt].
1289 * Cleaned many thing in surf and fixed a few bugs [AL].
1290 * Add a nice command line configuration mechanism to compose models [AL].
1291 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
1292 the previous one (KCCFLN05). It relies on something that looks like
1293 a max-min sharing mechanism but cannot be written as such. A new solver
1294 was thus designed [AL].
1295 * Add a new solver to lmm. Based on Lagrange optimization and
1296 gradient-based descent, it enables to efficiently maximise systems s.a
1298 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
1300 This solver enables to propose two new network models for TCP Reno and
1301 TCP Vegas based on Low's work. These models still need to be fully
1302 tested though [Pedro Velho].
1305 * Bug fix in SD_simulate. Now the time bound given as argument is
1307 * Use the new parallel task model (ptask_L07) as default.
1308 * Use the SURF command line configuration mechanism.
1309 * 0-size tasks (for synchronization) should now work.
1311 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
1313 SimGrid (3.2) stable; urgency=high
1317 We still experience issues on this platform, but we believe that at
1318 least MSG is usable.
1320 GRAS API BREAKAGE (for simplification purpose, sorry):
1321 * the gras_msgtype_by_name is not used anymore. Instead of
1322 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
1323 you can write (and must)
1324 gras_msg_send(toserver, "request", &request);
1325 - If you still want to pass a gras_msgtype_t to the function (to cache
1326 the type and avoid the lookup time), use the gras_msg_send_() variant.
1327 - Impacted functions:
1328 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
1329 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
1330 * The callbacks are now expected to return 0 when everything went well
1331 (just like the main() function)
1333 GRAS new features and improvements:
1334 * New module mecanism where user code can use per process globals [Mt]
1335 This is similar to gras_userdata_*() functions, but for libraries. It
1336 factorize some code developped over and over in the examples and AMOK.
1337 It has still to be documented and used (only amok/peermanagement is
1339 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
1340 loss when they were small enough to fit into the buffer and sent quickly
1341 enough so that they can all get received in one shoot.
1342 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
1343 if not found. Use the *_or_null() variant for the old semantic.
1344 * In gras_msg_handle, do not discard messages without callback.
1345 They are probably messages to be explicitly awaited later (ie, proofs of
1346 mis-synchronization in userland since they are sent before being awaited)
1347 No big deal usually.
1348 * gras_socket_meas_send/recv: semantic changed!
1349 The numerical arguments used to be (1) the total amount of data to send
1350 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
1351 messages. This was need for the fool willing to send more than MAXINT
1352 bytes on quite fat pipes.
1355 * Do really rename the hostmanagement module to peermanagement. [Mt]
1356 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
1357 but this is rather new and this was documented in the module
1358 documentation (poor excuses, I admit)
1359 * Bandwidth measurement semantic changed! This follows the changes to
1360 gras_socket_meas_send/recv explained above.
1363 * A sequential mode has been added to the workstations. When a workstation
1364 is in sequential mode, it can execute only one task, and the other tasks
1365 are waiting in a FIFO. [Christophe Thiery]
1368 * The KCCFLN05 workstation model now handles parallel tasks. It is the
1369 model for SIMDAG. [Christophe Thiery]
1370 * Bug fix in the maxmin solver: Some values were close to 0 instead of
1371 equal to 0, which caused some bad behaviors in
1372 saturated_constraint_set_update. I now use a threshold mechanism like in
1376 * When running manually src/testall, you select specific units [Mt]
1377 testall is the result of our cunit mecanism, and should replace all
1378 the scripty thingy around since bash don't run easily on billware.
1380 * A mallocator system has been added. [Christophe Thiery]
1381 Mallocators allow you to recycle your unused objects instead of freeing them
1382 and allocating new ones.
1384 Documentation update:
1385 * FAQ reworking + New FAQs:
1386 - "Valgrind spits tons of errors!" [Mt]
1387 - "How to repport bugs" [Mt]
1388 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
1389 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
1390 - Communication time measurement within MSG [AL]
1391 - I experience weird communication times when I change the latency [AL]
1392 * GRAS tutorial [Mt]
1394 - an introduction to the framework and to the used communication model
1395 - an initiatic tour introducing the most proheminent features:
1397 . Lesson 0: Installing GRAS
1398 . Lesson 1: Setting up your own project
1399 o Part 2: Message passing
1400 . Lesson 2: Exchanging simple messages
1401 . Lesson 3: Passing arguments to the processes (in SG)
1402 . Lesson 4: Attaching callbacks to messages
1403 . Lesson 5: Using globals in processes
1404 . Lesson 6: Logging informations properly
1405 . Lesson 7: Using internal timers
1406 . Lesson 8: Handling errors through exceptions
1407 . Lesson 9: Exchanging simple data
1408 . Lesson 10: Remote Procedure Calling (RPC)
1409 . Lesson 11: Explicitely waiting for messages
1410 . Recapping of message passing features in GRAS
1411 - A HOWTO section containing:
1412 o HOWTO design a GRAS application
1413 More are due, of course. They will come latter. In the meanwhile, you can
1414 check the examples which are still here.
1416 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
1418 SimGrid (3.1) stable; urgency=high
1422 There was a stack corruption somewhere, visible only when optimizing
1423 with these versions. [Vince]
1426 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
1427 module that enabled to play with Directed Acyclic Graphs. It is built
1428 directly on top of SURF and provides an API rather close to the old
1429 SG. Some old codes using SG are currently under rewrite to check that
1430 all needful functions are provided. [Christophe Thiery]
1433 * Complete rewrite of the KCCFLN05 workstation model. It is now an
1434 extension of the classical CLM03 model that gracefully handles
1435 failures. This is now the default model for MSG and GRAS. It doesn't
1436 handle parallel tasks yet though. [AL]
1437 * Bug fix: Weights were not correctly set in the network part.
1438 WARNING: This may have resulted in incorrect results with simulations
1439 where there are more than one flow on a given link. [AL]
1442 * After a (long ?) discussion on simgrid-devel, we have decided that the
1443 convention we had on units was stupid. That is why it has been decided
1444 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
1445 WARNING : This means that all previous platform files will not work as
1446 such with this version! A warning is issued to ask users to update
1448 A conversion script can be found in the contrib module of the CVS, under
1449 the name contrib/platform_generation/surfxml_update.pl [MQ]
1452 * Bug fix: Processes were started in reverse order, wrt deployment file.
1453 WARNING: if your code relies on this bug, please fix it. [AL]
1454 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
1455 being executed on two different locations. [AL]
1456 * Bug fix: Failures are now better supported thanks to Derrick's tests
1457 (there was many failure situations I hadn't thought of and that weren't
1458 correctly handled). [AL]
1459 * New function: MSG_host_is_avail indicates you whether a given m_host_t
1463 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
1464 Exception occurring on server-side are propagated back to client (!).
1466 API CHANGE: the callback changed their prototype. Change:
1467 int my_handler(gras_socket_t expeditor, void *payload_data) {
1469 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
1470 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
1472 * New! function: gras_msg_handleall to deal with all messages arriving
1473 within a given period.
1474 * New! function: gras_socket_server_range to get a server socket in a
1475 range of port numbers (ease to avoid port number conflicts) [MQ]
1476 * New! gras processes display their backtrace when they get a SIGUSR1
1477 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
1478 Sweet to debug RL processes [MQ]
1482 - Do not force experiment sizes to be expressed in kb, or it becomes
1483 impossible to measure the latency this way (needs one byte-long tests)
1484 WARNING: this changes the amok_bw_* function semantic. [MQ]
1485 - Implements the link saturation stuff. [MQ]
1486 * Peer management module:
1487 New! module factorizing code that we wrote over and over [MQ].
1490 * New module: cunit (my jUnit implementation in ansi C) [MQ]
1491 - Test units are placed directly into the library code, they get extracted
1492 automatically and placed into the src/testall binary.
1493 - Convert most of the XBT tests to this system.
1494 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
1495 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
1496 live in the same C code. This required to change a little bit the API
1497 of surfxml parsing but shouldn't be an issue for end-users. [AL]
1498 * New module: sparse graph structure with basic algorithms (this is work
1499 in progress and the API is not considered to be frozen yet). [AL]
1500 * Display more information on backtraces: source line & function names are
1501 now displayed just like valgrind does (rely on addr2line tool) [MQ]
1502 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
1503 * Reworked a little bit some #include statements to load only required
1504 headers. Some user code that relied on SimGrid to include stdlib or
1505 stdio may need to include it by themselves. [AL]
1506 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
1508 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
1509 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
1510 but I guess that almost nobody used those parts. [MQ]
1512 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
1514 SimGrid (3.0.1) stable; urgency=low
1517 * Unfortunately, I had missed 5 misnamed functions:
1518 xbt_fifo_item_t xbt_fifo_newitem(void);
1519 void xbt_fifo_freeitem(xbt_fifo_item_t);
1520 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
1521 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
1522 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
1523 They're now deprecated. Please use their new versions:
1524 xbt_fifo_item_t xbt_fifo_new_item(void);
1525 void xbt_fifo_free_item(xbt_fifo_item_t);
1526 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
1527 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
1528 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
1530 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
1531 * Documentation: xbt_log module unmercifully reworked [MQ]
1532 * Bugfix: there was a problem with the ending of contexts with
1533 the pthread backend. It caused some weird deadlock or behavior
1534 depending on the pthread implementation. [AL]
1535 * Bugfix: get the exceptions raised in the simulator repport where
1536 and why they come from when they are not catched in time [AL, MQ]
1539 * Bugfix: Do repport the error when two non-connected hosts try to
1540 exchange data (Thanks to Flavien for stumbling into this one) [AL]
1543 * Add additionnal checkings on communications. Assert that two
1544 communicating hosts are connected by a set of links... [AL]
1547 * Add additionnal checkings on channel values in communication [AL]
1548 * New: MSG_task_get_source to see on which host a task was generated [HC]
1549 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
1550 the number of tasks waiting to be received on channel and sent
1552 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
1553 waits for the first task coming from a given host.. [AL]
1555 GRAS new functionnalities: [MQ]
1556 * Enhance the parsing macro to allow the size of multidimentional objects
1557 to be given thru annotations.
1558 * New example (and documentation): Matrix Multiplication a la RPC
1559 (as when I was young!) and fix a bunch of bugs found on the way.
1561 GRAS performance improvements: [MQ]
1563 * Reduce the amount of cbps creation/destruction by making it static to
1564 datadesc_send/recv() and using a (newly created) cbps_reset (based on
1567 * Change libdata to a set so that we can search for stuff by ID (and thus
1568 reduce the insane amount of dict lookups)
1571 * Actually implement gras_datadesc_copy() so that we don't have to mimick
1572 RL communication on top of SG since it's so uneffective.
1573 It may also be used for inter-thread communication in RL, one day.
1574 * Use gras_datadesc_copy() to exchange messages on top of SG
1576 - improve message exchange performance on top of SG
1577 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
1578 * Don't exchange on the network the size of the used part of buffer,
1579 instead, specify the possible buffer size to read().
1581 - reduces the amount of read/write calls (one pair per exchange)
1582 - reduces the amount of exchanged data (the size)
1583 - allows to retrieve all arrived data on receiver side, if we don't need
1584 it right now (subsequent read will peek the buffer)
1585 - allows the receiver to proceed with the begining of the stream before
1586 everything is arrived
1587 - make it possible to build an iov transport (using readv/writev)
1589 - take care of the data with non-stable storage (like stacked data),
1591 * If possible, TCP send uses vector I/O (when writev() is here)
1592 - Don't use it for receive since we send data sizes and data on the
1593 same stream, so we wouldn't be able to chain large amount of chunks
1594 before having to flush the stuff to read the size.
1595 * Rework the transport plugin mecanism to simplify it and reduce the
1596 amount of pointer dereferencement when searching for the right function
1599 * I guess that now, we do almost as few system calls as possible while
1600 doing as few data copy as possible.
1602 To improve it further, we could try to send all the sizes first and then
1603 all the data (to use iov on receiving size), but it's only a partial
1604 solution: when you have 2 dimensional data, the sizes of the second
1605 dimension is data of the first dimension, so you need 3 streams.
1607 I'm not sure the potential performance gains justify the coding burden.
1609 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
1611 SimGrid (3.00) stable; urgency=high
1614 * New! Give the possibility to hijack the surf parser and thus bypass
1615 MSG_create_environment and MSG_launch_application. Have a look at
1616 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
1618 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
1620 SimGrid (2.96) unstable; urgency=low
1625 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
1626 This deprecates the xbt_error_t mecanisms.
1627 It modifies (simplifies) all XBT and GRAS API.
1628 MSG API keeps unchanged (exceptions raised by XBT are catched from
1629 within MSG and masked with existing error handling facilities)
1632 * New! Add a FATPIPE model. [AL]
1633 * New! Add a parallel task model. [AL]
1634 * New! Add automatically a loopback interface (in the default
1635 network model) if none was precised.
1638 * Bugfix: MSG_process_resume now works with the current running process.
1640 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
1641 * Modification of MSG_task_get_compute_duration. Once a task has been
1642 processed, the value returned by this function is now equal to 0. [AL]
1643 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
1644 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
1645 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
1646 of a m_task. For now, MSG_task_cancel only works with computation
1648 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
1649 of the processor (in Mflop/s) regardless of the current load on the
1651 * API Change: use proper naming convention for MSG_getClock and
1652 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
1654 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
1655 This function changes the priority of a computation task. This priority
1656 doesn't affect the transfer rate. A priority of 2 will make a task
1657 receive two times more cpu power than the other ones. This function
1658 has been added to suit the needs of Nguyen The Loc and hasn't been that
1659 much tested yet. So if it fails, please report it and send me your code.
1661 * API Change: removed all functions and types that were marked "deprecated"
1662 since many months. Renamed MSG_global_init_args to MSG_global_init.
1664 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
1666 SimGrid (2.95) unstable; urgency=low
1669 * Steal some nice code to GNU pth to fix context detection and usage [AL]
1670 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
1671 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
1674 * Bugfix: Allow absolute paths for platform description files [MQ]
1675 * Bugfix: do free the variables after use. Leads to drastic performance
1677 * Implement max_duration (ie, timeouts) on resources [AL]
1680 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
1682 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
1683 the needed support (timeouts) [AL]
1686 * Implement measurement sockets. You can now get the bandwidth between two
1687 hosts thanks to AMOK (see below). [MQ]
1688 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
1689 dynar over the network (yeah) [MQ]
1690 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
1691 * simple/static token-ring example. [Alexandre Colucci and MQ]
1692 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
1693 in place before [MQ]
1696 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
1697 type parsing. "short" and "long" modifiers were also ignored; other
1698 modifier (such as reference level) are still ignored. [MQ]
1699 * Embeed the buffer size within the buffer itself on SG. [MQ]
1700 That way, send() are atomic and cannot get intermixed anymore (at least
1701 the ones which are less than 100k; bigger messages still have the issue)
1702 * Array size pushed by the field, not by the field type (or each
1703 and every long int will push stuff to the cbps) [MQ]
1704 * use select() to sleep since it allows to portably sleep less than one
1707 GRAS (minor cleanups)
1708 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
1711 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
1712 * type category 'ignored' killed as it was never used and were difficult
1714 * whether a type can cycle or not is now a flag, leaving room for more
1715 flags (as "ignored", if we feel the need one day ;)
1716 * Rename raw sockets to measurement sockets since "raw" has another
1717 meaning in networking community.
1720 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
1721 and offers features not belonging to GRAS but that most applications
1722 need. One day, it may be a set of plugins loadable at runtime.
1723 * New module: bandwidth
1724 bandwidth measurement between arbitrary nodes running this module. [MQ]
1726 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
1728 SimGrid (2.94) unstable; urgency=low
1730 The first beta release of SimGrid 3 !
1734 * Update the main page and the FAQ. Adding references to gforge.
1737 * Add a gras_os_getpid function.
1740 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
1741 * Extend the logs so that they also print PID, hostname, date, ... if
1743 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
1744 and kill the old version which were in testsuite/
1745 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
1749 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
1750 for users. Instead, each programming environment (GRAS, MSG,...) use it
1751 when needed to provide such a feature to users.
1752 Don't shortcut the mecanism or you will also shortcut the virtualization
1753 you need on the simulator.
1757 * Cleanups in configury with regard to compile optimization/warning flags.
1758 Also add -fno-loop-optimize to any powerpc since it's the optimization
1759 killing gcc (< 3.4.0).
1760 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
1761 needed by MSG examples complications
1762 * Borrow configury beautifications from PHP
1765 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
1766 warning (thanks loris for stumbling into this one).
1767 * Bugfix: stop loading private headers (gras_config.h) from the public
1771 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
1772 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
1773 RL would imply a DNS resolver, which is *hard* to do in a portable way
1774 (and therefore delayed).
1775 * Implement a real timer mecanism and use it in timing macros. This allows
1776 to avoid rounding errors and get a 0.000005 sec precision in timing
1777 macros. While I was at it, various cleanups:
1778 - allow to declare more than one timed section per file (fix a stupid bug)
1779 - move some private declaration to the right place
1780 - merge conditional execution and timing macros into emulation module
1781 - document the module
1782 - make sure the module cleanups its mess on gras_exit
1783 * Documentation improvements:
1784 - (new) how to compile applications using GRAS
1785 - (new) emulation support (timing macros)
1787 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
1789 SimGrid (2.93) unstable; urgency=low
1791 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
1794 - Use Paje properly where used. Still to be sanitized properly.
1795 - Portability fix: Add an implementation of the contexts using pthread
1799 - Add xbt_procname(): returns the name of the current process.
1800 Use it to show the current process's name in all logging.
1802 - fix detection of older flex version and the reaction, since we do
1803 depend on modern ones (we use lex_destroy)
1804 - Better separation of SG and RL in the libs: remove all simulation code
1805 from libgras. As a result, this lib is now only 200k when stripped.
1806 Some of the xbt modules may also be duplicated (two sets and such) and
1807 should be cleaned/killed before SG3.
1808 - Insist on using xlC on AIX because of weird problems involving gcc there.
1809 - Cleanup the make remote stuff. This is now done by scripts
1810 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
1811 mainly for our private use, but we're working on changing them to user
1814 - Bugfix: flush the socket on close only if there is some *output*.
1815 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
1817 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
1820 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
1822 SimGrid (2.92) unstable; urgency=low
1824 Alpha 3 on the path to SimGrid 3
1828 - New! First try of benchmarking macros.
1829 - New! First try so that gras_stub_generator generate deployment and
1830 remote compilation helpers.
1832 - Bugfix: Initialization fix in msg_test.
1836 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
1838 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
1840 - API Change: gras_os_sleep to take the amount of seconds as a double.
1841 Accepting an int was error prone since it was the only location where
1842 seconds were coded as such. It leaded to damn rounding errors.
1843 - Bugfix: Hard to belive that timers ever worked before this.
1845 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
1847 SimGrid (2.91) unstable; urgency=low
1849 Alpha 2 on the path to SimGrid 3
1853 - Bug fix in the lmm_solver.
1855 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
1856 through the function MSG_paje_output.
1857 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
1858 - It is possible to bound the rate of a communication in MSG with
1859 MSG_task_put_bounded() (was already in the previous version but I had forgotten
1860 to write it in the changelog).
1861 - Bug fix to let GRAS run on top of MSG until we move it directly on top
1866 - Various cleanups to the autotools stuff
1867 - Begin to move Gras examples to examples/gras/
1868 - Let make distcheck work again (yeah!)
1870 - documentation overhauled using doxygen.
1871 gtk-doc-tools is dead in SimGrid now.
1872 - Automatically extract all existing logging categories, and add the list
1873 to the documentation (long standing one, to say the less)
1875 - Cleanup the known architecture table. Reorder the entries to group what
1876 should be, and use a more consistent naming scheme.
1877 (some of the test dataset are still to be regenerated)
1878 - New! Allow library to register globals on each process just as userdata
1880 This is implemented using a xbt_dict and not a xbt_set, so we loose the
1881 lookup time (for now).
1882 Use it in msg and trp.
1883 This cleans a lot the internals and helps enforcing privacy of the
1884 headers between the gras components.
1885 - New! Add a timer mechanism, not unlike cron(8) and at(1).
1886 - Bugfix: gras_os_time was delirious in RL.
1887 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
1889 - Reenable GRAS now that it works.
1891 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
1893 SimGrid (2.90) unstable; urgency=low
1895 Alpha 1 on the path to SimGrid 3
1897 * It is a long time since the last release of SimGrid. I'm sorry about
1898 that but as I had told you, I was rewriting a lot of things. I apologize
1899 to those who had been reporting bugs to me and that I had not answered.
1900 If your bug is still in the new version, please tell me. Here is a
1901 summary of the main changes.
1903 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
1904 lead by Martin Quinson. As a consequence SimGrid gains a lot in
1905 portability, speed, and a lot more but you'll figure it out later.
1906 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
1907 I wanted to release the new MSG as soon as possible and I have
1908 broken GRAS, which is the reason why, for now, only MSG is fully
1909 functional. A laconic description of these projects is available
1910 in the documentation.
1912 * REVOLUTION 2: I have removed SG and I am now using a new simulation
1913 kernel optimized for our needs (called SURF but only the developers
1914 should use it). Hence, MSG is now roughly 30 times faster and I think
1915 that by rewriting a little bit MSG, I could event speed it up a little
1916 bit more. Beside the gain in speed, it is also much easier to encode a
1917 new platform model with SURF than it was with SG. More to come...
1919 * REVOLUTION 3: I have tried to change a little as possible the API of
1920 MSG but a few things really had to disappear. The main differences
1921 with the previous version are :
1922 1) no more m_links_t and the corresponding functions. Platforms are
1923 directly read from a XML description and cannot be hard-coded
1924 anymore. The same format is used for application deployment
1925 description. The new format is described in the documentation.
1926 Have a look in tools/platform_generation. There is a tiny script
1927 that converts from the old platform format to the new one. Concerning
1928 the application deployment format, parsing the old one is tricky.
1929 I think most of you should however be able to convert your files. If
1930 it is really an issue, I can write a C code that does the conversion.
1932 2) the toolbox tbx does not exist anymore. We now have a library
1933 with much more data-structures but without the hash-tables (we have
1934 dictionaries that are much faster).
1936 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
1938 *****************************************************************************
1939 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
1940 * don't feel like converting the oldies. (Mt) *
1941 *****************************************************************************
1944 Version 2.90: "the long awaited one"
1945 - Finished rewriting and debugging MSG. Rewrote the documentation.
1946 - disable GRAS for now since it needs to be ported to the newest SG
1949 - Finish the port to windows (using mingw32 for cross-compile)
1952 - Main loop and datastructures of SURF. A cpu resource object is
1953 functional. Surf can thus be used to create cpu's with variable
1954 performance on which you can execute some actions.
1956 2004-11-15 Martin Quinson
1957 - Port to ARM. Simply added the alignment and size descriptions. Should
1958 work, but the ARM machines are so slow that I didn't had the opportunity
1959 to 'make check' over there yet.
1961 2004-11-15 Arnaud Legrand
1962 - Trace manager now written. It uses a heap structure and is therefore
1963 expected to be efficient. It may however be speeded up (particularly
1964 when many events occur at the same date) by using red and black
1965 trees. One day maybe...
1966 - Max-min linear system solver written. It uses a sparse matrix
1967 structure taking advantage of its expected use. Most operations are
1968 O(1) and free/calloc are called as few as possible. The computation of
1969 the minimum could however be improved by using a red and black tree
1972 2004-11-03 Arnaud Legrand
1973 - Rename every gras_* function that was in xbt/ to its xbt_
1975 - Add a heap and a doubly-linked list to xbt
1976 - Added a dichotomy to the dictionaries. make check works as well before
1977 so I assume that the patch is correct. I do not know however if things
1978 run effectively faster than before now. :)
1980 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
1981 SimGrid, and the version number is bumped to 2.x
1983 2004-10-29 Martin Quinson
1984 - Introduction of the remote errors.
1985 They are the result of a RMI/RPC on the remote machine.
1986 ErrCodes being scalar values, you can't get the host on which those
1987 errors did happen. Extending the error mechanism as in Gnome is possible.
1988 No idea yet whether it is a good idea.
1990 2004-10-28 Martin Quinson
1991 - Interface revolution: the Starred Structure Eradication.
1992 I used to do typedef struct {} toto_t; and then handle *toto_t.
1993 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
1994 - ???_t is a valid type (builded with typedef)
1995 - s_toto_t is a structure (access to fields with .)
1996 - s_toto is a structure needing 'struct' keyword to be used
1997 - e_toto_t is an enum
1998 - toto_t is an 'object' (struct*)
2000 typedef struct s_toto {} s_toto_t, *toto_t;
2001 typedef enum {} e_toto_t;
2002 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
2003 s_toto_t) is private.
2005 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
2006 so that it can set the variable to NULL. It was so for dicts and sets,
2007 it changed for dynars.
2009 - Fix a bunch of memleaks in dict_remove
2010 - Fix a bug in sg/server_socket opening: it failed all the time.
2012 2004-10-07 Martin Quinson
2013 - Speed up dynar lookup operation a bit.
2015 gras_dynar_get is dead.
2017 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
2018 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
2019 (which gives you the address of the stored data).
2021 gras_dynar_get_as is an helpful macro which allows you to retrieve a
2022 copy of the data using an affectation to do the job and not a memcpy.
2024 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
2025 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
2027 It does not really speedup the dynar test because they are
2028 setting elements all the time (and look them seldom). But the dict does
2029 far more lookup than setting.
2031 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
2033 2004-10-05 Martin Quinson
2034 - Allow to (en/dis)able the cycle detection at run time.
2036 Whether we should check for cycle or not is now a property of each
2037 datatype. When you think there may be some cycle, use datadesc_cycle_set.
2038 datadesc_cycle_unset allow to remove this property when previously set.
2040 Note that the cycle detection is off by default since it impacts the
2041 performance. Watch the data you feed GRAS with ;)
2043 This property is hereditary. Any element embedded in a structure having it
2044 set have it set for the time of this data exchange.
2046 You should set it both on sender and receiver side. If you don't set it on
2047 sender side, it will enter an endless loop. If you forget on receiver
2048 side, the cycles won't be recreated after communication.
2050 - Header reorganization.
2051 Kill gras_private.h, each submodule must load the headers it needs.
2053 2004-10-04 Martin Quinson
2054 - Interface revolution: do not try to survive to malloc failure.
2056 Now, gras_malloc and friends call gras_abort() on failure.
2057 As a conclusion, malloc_error is not a valid error anymore, and all
2058 functions for which it was the only gras_error_t return value are
2059 changed. They now return void, or there result directly.
2060 This simplify the API a lot.
2062 2004-09-29 Martin Quinson
2063 - Re-enable raw sockets.
2064 Created by gras_socket_{client,server}_ext;
2065 Used with gras_raw_{send,recv}
2068 It should allow to kill the last bits of gras first version soon.
2070 This is not completely satisfactory yet (duplicate code with
2071 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
2074 - Simplify transport plugin (internal) interface by not passing any
2075 argument to _server and _client, but embedding them in the socket
2078 2004-09-28 Martin Quinson
2079 - Finish the port to AIX.
2080 autoconf was my problem (segfault within the malloc replacement
2081 function. No idea why)
2083 2004-09-16 Martin Quinson
2084 - Fix some size_t madness on 64bit architectures.
2086 2004-09-08 Martin Quinson
2087 - Reduce the number of system headers loaded, overload some more system
2088 calls (such as malloc to cast the result of the system one, and work
2090 - Fix and reintroduce the config support
2092 2004-09-07 Martin Quinson
2093 - Source code reorganization to allow Arnaud to surf all over there.
2094 - Allow to document the logging categories.
2095 - Remove all uppercase from logging categories and useless cleanup in names.
2097 2004-08-18 Martin Quinson
2098 Version 0.6.2 (protocol not changed; API changed)
2099 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
2100 gras_error_t), and NULL when not found. Functions expecting a msgtype
2101 as argument (msg_wait; msg_send) deal with NULL argument by providing a
2102 hopefully usefull message.
2103 - Portability to prehistoric sparcs again
2105 2004-08-17 Martin Quinson
2106 Version 0.6.1 (protocol not changed; ABI not changed)
2107 - prealloc some buffers to speed things up
2109 2004-08-11 Martin Quinson
2110 Version 0.6 (protocol not changed; ABI expended)
2111 - The parsing macro can deal with the references, provided that you add
2112 the relevant annotations (using GRAS_ANNOTE(size,field_name))
2114 2004-08-09 Martin Quinson
2115 Version 0.5 (protocol not changed; ABI changed)
2116 - Allow to off turn the cycle detection code in data exchange at
2117 compilation time. It should be at run time, but I'm short of time (and
2118 the config stuff is still broken). That way, we keep dict out of the
2119 critical path, which is good because the performance is poor:
2120 - search not dichotomial yet
2121 - dynar give no way to access their content and memcpy everytime
2122 - In composed data description (struct, ref and so on), stop foolness of
2123 keeping the subtype's ID, but store the type itself. This keeps sets out
2124 of the critical path, which is good since they rely on dynar and
2125 dictionnaries. The only loose of that is that we cannot detect the
2126 redeclaration of a structure/union with another content (but I'm not sure
2127 the code detected well this error before anyway). We still can detect
2128 the redefinition discrepancy for the other types.
2129 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
2130 it breaks the code because of type-punning used all over the place).
2131 This breaks on all non-gcc architectures (for now).
2133 All those changes (plus the buffer of last time) allow me to gain 2 order
2134 of magnitude on cruel tests consisting of 800000 array of integers on two
2135 level of a hierarchical structure (200 secondes -> 4 secondes)
2138 - the selector of reference must now return the type it points to, not
2139 the ID of this type.
2141 2004-08-06 Martin Quinson
2142 Version 0.4 (protocol changed; ABI not changed)
2143 - Allow to pass --gras-log argument to processes in simulation mode. Really.
2144 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
2145 - Implement a buffer transport, and use it by default (it relies on tcp in
2146 real life and on sg in simulation).
2147 That's a bit hackish since I had a new field to the structure to store
2148 its data without interfering with the subtype ones. Inheritance
2149 is tricky in C. And that's a kind of reverse inheritance with one class
2150 derivating two classes. Or maybe a game with java interfaces. Anyway,
2151 that's damn hard in C (at least).
2152 Moreover, I got tired while trying to ensure plugin separation and
2153 genericity in SG mode. MSG wants me to do weird things, so let's go for
2154 cruel hacks (temporarily of course ;).
2155 See comment in transport_private.h:71
2156 - do not include all the _interface headers in private but in the files
2157 which really need them (to cut the compilation time when they are
2160 2004-07-26 Martin Quinson
2161 Version 0.3 (protocol not changed; ABI changed)
2162 - Major overhault of the datadesc interface to simplify it:
2163 - shorted the function names:
2164 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
2165 - add a trivial way to push/pop integers into the cbps without malloc.
2166 This allows to make really generic sub_type description, which simply
2167 pop their size of the stack.
2168 - add a function gras_datadesc_ref_pop_arr() which does what users want
2169 most of the time: Declare a dynamic array (which pops its size of the
2170 stack) and declare a reference to it. Poor name, but anyway.
2171 - kill the post-send callback, add a post-receive one
2173 2004-07-23 Martin Quinson
2174 Version 0.2 (protocol changed; ABI changed)
2175 - add some testing for cpbs in the test cases, and fix some more bugs.
2176 This invalidate again the little64 data file, since I cannot regenerate
2178 - remove an awfull optimization in the logging stuff, allowing me to:
2179 - understand it again
2180 - learn gcc how to check that the argument match the provided format
2181 - fix all errors revealed by gcc after that
2182 - internal keys of dict are not \0 terminated. Deal with it properly in
2183 loggings instead of segfaulting when the user want to see the logs :-/
2185 2004-07-22 Martin Quinson
2186 - Fix some stupid bug preventing cbps (callback postit) from working
2188 2004-07-21 Martin Quinson
2189 - Some documentation cleanups
2190 - remove the useless last argument of msgtype_declare
2191 - rename the Virtu functions to fit into the 'os' namespace
2192 - move headers src/include -> src/include/gras/ and stop fooling with
2193 gras -> . symbolic link
2194 - make distcheck is now successful
2196 2004-07-19 Martin Quinson
2198 - Build shared library also
2199 - Install html doc to the right location
2200 - stop removing maintainer files in make clean
2201 - build tests only on make check
2203 2004-07-13 Martin Quinson
2205 - No major issue in previous version => change versionning schema
2206 - Re-enable little64 convertion test now that Abdou kindly regenerated the
2207 corresponding dataset.
2209 2004-07-11 Martin Quinson
2211 - Get it working with any kind of structure (we can compute the padding
2212 bytes remotely for all the architectures I have access to)
2213 - Implement the structure parsing macro (still not quite robust/complete)
2214 - Improvement to the remote testing toysuite
2216 2004-07-10 Martin Quinson
2217 [autoconf mechanism]
2218 - get ride of a bunch of deprecated macros
2219 - actually run the test for two-compliment, not only compile it :-/
2220 - test whether the structures get packed (and bail out if yes. Damn.
2221 Alignment is a serious matter)
2222 - test whether the structures get compacted (but respecting the alignment
2223 constraints of each types)
2224 - test whether the array fields of structures can straddle alignment boundaries
2226 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
2227 (took me 2 hours to find that bug, looking at the wrong place)
2228 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
2229 before sending/receiving and are used to compute the offsets of fields
2230 - Given that padding size depend even on compiler options, keep track of
2231 alignment and aligned_size only for the current architecture. Not a big
2232 deal since we send structure fields one after the other (seems
2234 - Add the datastructure used for IEEE paper by the PBIO guys to the test
2235 program, let it work on linux/gcc/little32. portability todo.
2237 2004-07-08 Martin Quinson
2238 - import and improve remote compilation support from FAST
2239 - make sure make check works on half a dozen of machines out there
2241 2004-07-07 Martin Quinson
2242 Let's say it's version 0.0.3 ;)
2243 - Implement conversions (yuhu!)
2244 - Let it work on solaris (beside conversion, of course)
2245 - Stupid me, using rand() to generate the conversion datatests in not wise.
2247 2004-07-06 Martin Quinson
2248 - Let make dist work, since I'm gonna need it to compile on remote hosts
2249 - Let Tests/datadesc_usage write the architecture on which the file was
2250 generated as first byte.
2251 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
2252 architecture descriptions.
2253 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
2254 on those architectures.
2255 - Optimization: send/recv array of scalar in one shoot
2257 2004-07-05 Martin Quinson
2258 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
2260 - Plug a whole bunch of memleaks
2261 - each process now have to call gras_{init,exit}. One day, their log
2262 settings will be separated
2263 - Continue the code factorisation between SG, RL and common in Transport.
2265 2004-07-04 Martin Quinson
2267 - Redistribution between SG and RL.
2268 We wanna have to accept in SG, so move accepted related parts of RL in
2269 the common part. (more precisely, the dynar of all known sockets is no
2270 more a static in transport.c, but part of the process_data)
2272 [gras_stub_generator]
2273 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
2275 2004-07-03 Martin Quinson
2276 - Create a new log channel tbx containing dict, set, log, dynar (to shut
2277 them all up in one shot)
2279 - Fix the ugly case of reference to dynamic array.
2280 - New (semi-public) function gras_datadesc_size to allow the messaging
2281 layer to malloc the needed space for the buffer.
2283 - gras_socket_close now expect the socket to close (and not its address to
2284 put NULL in it after it). This is because the socket passed to handlers
2285 is one of their argument (=> not writable).
2287 - propagate the interface cleanup from last week in datadesc, ie remove a
2288 superfluous level of indirection. User pass adress of variable
2289 containing data (both when sending and receiving), and not of a variable
2290 being a pointer to the data. Let's say that I like it better ;)
2291 The price for that is constructs like "int msg=*(int*)payload" in
2292 handlers, but it's a fine price, IMHO.
2294 - Let it work in RL (yuhu)
2296 2004-06-21 Martin Quinson
2298 - porting SG plugin and SG select to new standards (works almost).
2299 - plug memleaks and fix bugs around.
2302 - cleanup the prototype of data recv and force users to specify when they
2303 want to handle references to objects. Test case working even for cycles.
2304 - plug memleaks. Valgrind is perfectly ok with this.
2306 2004-06-12 Martin Quinson
2308 - cleanup the separation between plugin and main code in plugin creation
2310 2004-06-11 Martin Quinson
2312 - Reput hook for raw sockets, needed for BW experiments
2313 - kill a few lines of dead code
2314 [Data description] Interface cleanup
2315 - gras_datadesc_by_name returns the searched type or NULL.
2316 That way, no variable is needed to use a type desc once, which makes
2318 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
2319 two parameters were strings (field name, type name), leading to
2321 [Dicos] Interface cleanup
2322 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
2323 This is consistant with the dynar API.
2325 2004-04-21 Martin Quinson
2327 - Porting to new standards.
2329 - interface cleanup.
2330 There is no bag anymore, no need to take extra provision to mask the
2331 pointers behind "ID".
2332 Better splitup of functions between files create/exchange/convert.
2333 This is still a bit artificial since convert and receive are so
2334 interleaved, but anyway.
2336 - add a queued message list to procdata (the ones not matching criteria
2338 - factorize some more code between SG and RL wrt procdata
2340 - use gras_exit in example to track memleaks
2341 - get rid of gs_example now that GS is properly integrated into gras
2342 - update run_test to integrate the lastest tests (datadesc)
2344 - rename WARNINGn macros to WARNn since it prooved error-prone
2346 2004-04-19 Martin Quinson
2348 - register init/exit functions within gras module mechanism
2349 - send/receive function.
2350 Convertion is not implemented, but short-cutted if not needed.
2351 struct/array elements are sent one by one (instead of block-wise), but
2352 nobody really cares (yet). Get a prototype before optimizing.
2353 - tests (using a file socket) for DD send/receive on:
2354 - base types: int, float
2355 - array: fixed size, string (ie ref to dynamic string)
2356 - structure: homogeneous, heterogeneous
2357 - chained list, graph with cycle
2358 Believe it or not, valgrind is not too unhappy with the results. The
2359 cycle happily segfaults, but the others are ok. And I'm sick of pointers
2363 - Bugfix when using a filename explicitely (instead of '-')
2365 2004-04-09 Martin Quinson
2367 - factorize more code between RL and SG in socket creation
2368 - Complete the implementation and tests of:
2370 o file (only in RL, and mainly for debugging)
2372 I lost 3 days to design a portable address resolver, and then decided
2373 that the prototype mainly have to run on my box.
2374 Addressing portability too early may be like optimizing too early :-/
2376 - use gras_init in the Tests instead of the crappy parse_log_opt
2377 (the latter function is removed)
2378 [Conditional execution]
2379 - New functions: gras_if_RL/gras_if_SG (basic support for this)
2380 [Code reorganisation]
2381 - Get rid of libgrasutils.a since it makes more trouble than it solves.
2382 Build examples against the RL library, since there is no way to disable
2383 its creation for now.
2385 For information, the beginning of coding on GRAS was back in june
2386 2003. I guess that every line has been rewritten at least twice since