1 SimGrid (3.6) unstable; urgency=low
4 * Change the prototypes of action replay. Sorry for inconvenience,
5 but this is really more efficient this way (and to adapt your code,
6 you just have to fix the initialization, that shouldn't be too long)
7 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
8 ever managed to do anything useful with it.
9 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
10 takes a dynar of communications. It returns immediately and gives the
11 index of a finished communication (if any).
12 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
13 only say if a communication is finished, no matter whether it succeeded or
14 failed. You can call MSG_comm_get_status() to know the status of a finished
16 * New function MSG_task_dsend() to send a task and detach it. When a
17 communication is detached, you are never notified of its success or failure
18 and the memory is released automatically once it is finished. This function
19 is useful when you don't care about the end nor the success of a
20 communication you send.
21 * New example: a basic implementation of the Chord P2P algorithm.
24 * New model for multi-core CPUs. You can now use the core attribute to
25 precise the number of cores of a host. This is a basic model. Every
26 process running on the host receive at most the power provided in
27 the DTD (throughput<=power). Total throughput of process cannot exceed
29 * New peer tag. This peer tag creates a tiny AS comprising a host and a
30 router linked by an up-link and a down-link (possibly asymmetrical).
31 This kind of pattern allows to easily build last-mile model style platforms.
32 Aggregating such patterns in a rule-based AS is thus the technique of
33 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
34 * New model for Vivaldi routing. We transformed the Vivaldi network model
35 into a Vivaldi routing model (based on the rule-based model). This allows to
36 combine Vivaldi based latencies with last-mile platforms.
39 * Added a check for NaN of IEEE754 infinite in the double entries of
41 * Introduce a new context factory "raw", highly inspirated from the
42 ucontext factory, but using manually crafted functions in assembly to
43 do the work in an efficient manner.
44 * Allow to change the used context factory at run time, not only at
45 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
46 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
47 contextes at runtime (only with raw contexts or ucontexts).
48 * Completely rewrote this module to allow parallel execution of user
49 processes. Use --cfg=contexts/nthreads:N to execute user processes
50 with N parallel threads (the default is 1, meaning no parallelism).
51 * Allow to decide dynamically between sequential and parallel modes.
52 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
53 processes in parallel only when their number is greater than or equal to P.
56 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
57 won't output the state of processes when interrupted with Ctrl-C
58 * Add a new function xbt_dynar_to_array that transforms a dynar into a
59 NULL-terminated array. This may solve backward compatibility issues
60 due to the change to return type of SD_Simulate. See also:
61 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
62 * Add new macros with variable number of arguments.
63 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
64 - in xbt/asserts.h: xbt_assert
65 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
66 - in xbt/ex.h: THROWF and RETHROWF.
67 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
69 * Change xbt_die() to accept a format string with arguments, just like printf.
70 * New data structure: xbt_lib_t, like a dict but more general and with better memory handling.
73 * New configuration options
74 Options triva/categorized and triva/uncategorized can be used to generate
75 graph configuration files for Triva visualization tool.
76 * Configuration option tracing/platform is renamed to tracing/categorized
77 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
78 * New TRACE_user_link_variable interface:
79 User provides the name of the link and the tracing variable to attach to it
80 * the declaration of tracing categories must be done after the environment creation
81 * simpler tracing interface, just one way to declare categories
82 TRACE_category or TRACE_category_with_color, it is up to you
83 * links in the trace file are again identified by their names
84 * trace contains the full platform hierarchy exactly as declared using the ASes
85 * Options tracing/msg/[task|process]:1 groups the process by hosts
86 for both cases, tasks and processes must have names that are unique during the simulation
87 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
88 * The experimental option tracing/msg/volume is deprecated
89 its functionality may be reincorporated if needed
91 The tracing generates a trace file with unordered timestamped events,
92 because of the way the core simulator (surf) works. A script available
93 at the tools directory (fix-paje-trace.sh) can be used to put the events
94 in order. We have changed the tracing so it can generate ordered timestamped
95 events in the final trace, but depending on the simulator (and how much time
96 is simulated) that can lead to a huge memory utilization. It is desactivated
97 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
100 * Define a SIMGRID_VERSION macro in simgrid_config.h.
101 - We are trying hard to keep the API stable, but it may happen that
102 some things change (we're a research project after all, not a
103 nuclear plant operating system). If such things should happen, you
104 could rely on that macro to adapt.
105 - current value: 30600 for 3.06.00, aka 3.6
106 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
107 a number that can be compared with SIMGRID_VERSION.
108 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
109 assertions and verbose/debug logging events are disabled at compile time.
111 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
113 SimGrid (3.5) stable; urgency=medium
116 * New feature to any SimGrid-based simulator: Model-Checking
117 Check SIN#1 for more details.
120 * New Model SMPI (three-interval linear regression for correction factors)
121 See RR-7426, available at http://hal.inria.fr/inria-00527150
122 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
123 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
124 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
125 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
126 * See also src/smpi/README
131 - Tracing API changes: TRACE_start and TRACE_end should not be called
132 by user-code. They are automatically called by simulators created
133 with SimDAG, MSG and SMPI if the toolkit is compiled with
134 tracing_enabled=ON. Categories declaration and utilization remain the
135 same for MSG and SimDag.
136 - A function was added to the tracing API to declare categories with
138 - TRACE_category_with_color (char *category, char *color)
139 where color must be in the following format
140 "%f %f %f", red, green, blue
141 and red, green, blue are float values in the interval [0, 1]
142 - User can specify NULL as color parameter, or continue calling
144 On that case, the tracing system will define random colors
145 - The following command-line options are supported:
146 --cfg=tracing/filename:msg.trace
147 --cfg=tracing:1 (activate tracing, needed to use others)
148 --cfg=tracing/platform:1 (categorized resource use)
149 --cfg=tracing/uncategorized:1 (uncategorized resource use)
150 --cfg=tracing/msg/task:1 (task creation)
151 --cfg=tracing/msg/process:1 (process creation, migration)
152 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
153 --cfg=tracing/smpi:1 (SMPI interface tracing)
154 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
155 - examples of examples/msg/tracing updated
157 - DAXLoader and DOTLoader functions can generate tasks with categories
158 - A new function to attribute a category to SD tasks:
159 TRACE_sd_set_task_category (SD_task_t task, char *category)
160 * Tracing the MPI interface implemented by SMPI
161 - Collective operations are traced with states
162 - Point-to-Point operations are traced with states/links
163 - Tracing activated by a parameter "-trace filename" passed
164 to smpirun during execution (considering that simgrid
165 is compiled with tracing enabled)
166 - To run the simulation with gdb, the simulator
167 accepts --cfg=tracing/smpi:1 to trace SMPI
168 - tesh files to check if smpi tracing is ok
169 - See examples/smpi/NAS/DT-trace
170 * GTNetS tracing re-worked
171 - adaptation to the tracing system of GTNets to cope
172 with modifications regarding the fullduplex mode
173 - new tesh files to check if gtnets tracing is ok
176 * Asynchronous communications through the functions:
177 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
178 * New function: MSG_load_platform_script()
179 to make possible using a lua script instead of XML files to set up platforms
180 * New function: MSG_set_function
181 to associate functions to processes, used when bypassing the parser
182 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
184 Platforms: Add some more examples in examples/platforms
185 * Grid'5000: see www.grid5000.fr
186 * *_30000_hosts.xml: various huge files [mainly scalability testing]
189 * Change the XML format. This is a very important modification. SimGrid
190 3.5 introduces a new hierarchical format based on the notion of
191 Autonomous Systems. Compatibility with old format is ensured
192 through the perl script provided in the install bin directory
193 bin/simgrid_update_xml.
194 It is now possible to build platforms with specific routing
195 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
196 connect several platforms together. We will try to provide soon
197 set of realistic platforms exploiting these properties (have a
198 look at examples/platforms/ for the moment).
199 * Take the opportunity of the XML format change to be a good XML citizen:
200 rename link:ctn to link_ctn and similar changes (also dealed with by
202 * Add a new routing scheme (rule-based) using regular expressions. It
203 enables to have an extremely low memory footprint when the
204 underlying routing is simple and can be compactly described. You
205 need to have libpcre4-dev (perl regular expressions) installed if
206 you want to use this routing scheme.
207 * Revive the cluster TAG and allow to easily and efficiently (both in
208 term of memory and speed) connect clusters together. Have a look
209 at teshsuite/simdag/platforms/ to see how this can be done. With
210 this tag, you can create clusters with thousands of tasks at no
211 cost (have a look at examples/platforms/).
212 Note: clusters are implemented as ASes, so there is no need for an
213 enclosing AS tag if you have only one cluster in your platform.
214 * Add new generic functions in the public interface that allows the user
215 to call SURF 'create_resource' methods from your code (same
216 functionality as the XML bypass mechanism but with a much lighter
218 * Add a new model (enabled through command line --cfg=network/model:SMPI)
219 that uses a piecewise linear approximation to produce better
220 results when exchanging small messages.
221 * Add a new parameter to handle correctly full duplex link and account
222 for interferences between uplink and downlink communications
223 (activate with --cfg=fullduplex:1).
226 * Rename the SD_READY (all dependencies are satisfied and task is
227 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
228 dependencies are satisfied) state.
229 This prevents a confusion between the notion of "ready to schedule"
230 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
231 simulated" (SD_RUNNABLE) used by the simulation kernel.
232 * Change the way a task is considered as ready. Instead of removing
233 dependencies when a task is done, a counter is decreased. This way,
234 it is always possible to reach ancestors thanks to the
235 SD_taks_get_parents function (even after the end of the simulation.)
236 * Change the return type of SD_Simulate from (SD_task_t*) into
237 xbt_dynar_t. This function was in handling a dynar internally and
238 converted it into a NULL terminated array for historical reasons.
239 * New function SD_dotload(char*) to load a DAG described in dot
240 format. This loader and the corresponding examples require the
241 installation of the graphviz library.
242 * Fix a bug in the management of tasks of size 0 in the surf network
243 models. This problem was only visible with SIMDAG and you should
244 thus disregard results produced with earlier versions if you
245 relied on this feature (some tasks were blocked because of this).
246 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
247 even though your applications were doing only point-to-point
248 communications and sequential computations. Now you can really use any
249 model you want (of course, if you create real parallel tasks, which are
250 not implemented in most models beside ptaskL07, this will abort).
251 * Add an example that schedules a DAX on an heterogeneous platform
252 using a Min-Min strategy.
253 * New function SD_workstation_get_current_task() that returns the kind
254 of task currently running on a workstation in the sequential access
256 * Raise some warnings when unexecuted tasks remains at the end of the
257 simulation. This is usually caused by cycles in the DAG.
260 * New function: SIMIX_process_set_function() called by MSG_set_function
261 * Change the underlying waiting queue in semaphores so that a process
262 can wait on several of them simultaneously (as in waitany).
263 * Fix the way to handle tokens in semaphores so that all access patterns
264 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
265 * kill the dirty pimple SIMIX_message_sizes_output()
266 Please use (proper) visualization instead
269 * New data container: setset (set of sets of elements)
270 * New module: mmalloc (mapped malloc, allowing to have several
271 independent segments of malloc)
272 * New function: xbt_dict_cursor_set_data()
273 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
274 * New function: xbt_dynar_is_empty()
275 * New function: xbt_fifo_get_last_item()
276 * Fix xbt_dynar_shrink(): use the right element size.
277 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
278 uninitialized areas during expand.
279 * Fix semaphores: previous implementation was severely broken.
280 * Use library init/fini functions for our initialization.
281 - you can use logs and other feature as soon as you want in your
282 code (even before the xbt_init / MSG_init)
283 - xbt_exit is now a no-op and produce a warning when used.
286 * Port GRAS to new SIMIX mechanisms. This allows gras users to
287 benefit from the latest improvement to the simulation kernel.
288 * Kill measurement sockets for now. If you rely on them, sorry. This
289 release is not for you. This feature will be reintroduced in the
290 future, but we cannot delay the release any further.
291 * New function: gras_msgtype_get_name().
292 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
293 * Fix (at last) the pmm example: it should not randomly fail anymore.
295 Build chain: bug fixes and overall polishing
296 * Cmake is now stable enough. Hence, we killed the autotools.
297 * Port to windows ( TM :)
298 * Fix the 'make install' target.
299 No need to use 'make install-simgrid' anymore
300 * Introduce a 'make dist' target compiling a *source* archive
301 'make package' compiles a binary archive
302 * Compile java files only on need
303 * Add --cd and --setenv command line options to tesh
304 * Out of source builds are not fully supported yet, but we are close
305 * Enable supernovae and optimization flags by default for our users
308 * Add layer to set up environment directly from lua, without XML.
309 * The effect of gras_stub_generator can be achieved through
310 lua too (check examples/gras/console/ping_generator.lua)
312 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
314 SimGrid (3.4.1) stable; urgency=low
316 The "Polishing easter eggs is probably a good idea" release.
317 This is a bug fixes release only.
321 * Fix a bug preventing the tasks from begin garbage collected.
324 * Fix a bug occuring when a host involved in a communication fails.
325 This was not detected properly by the other peer involved in the
326 communication. Now, it's reported as a network error.
329 * Warn the user about loop dependencies in data flow of DAX files
330 * Obey the control-flow dependencies of DAX files
333 * Add option "enable_smpi" allowing to not compile SMPI.
334 Probably useful for the (Mac) users experiencing a build error here
335 * Improve the detection of lua5.1 and ruby1.8
337 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
339 SimGrid (3.4) stable; urgency=low
341 The "Easter in Cargese" release. Also known as (major changes):
343 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
344 ~> bindings were greatly improved
345 ~> new tracing infrastructure for better visualization introduced
347 * the "Welcome to configury modernity" release.
348 ~> we switched from autotools to cmake, and improved our cdash
351 A more detailled list of changes follow (full detail in svn log).
353 Java Bindings: Various Cleanups
354 * (install java-gcj-compat-dev on debian-like to use them)
355 * Remove put/get: no need to export deprecated interface in Java
356 Use send/receive instead.
357 * Cleanup the examples and add a README per directory
358 * Remove example autoDestination (that's the only way to go now)
359 * Remove example explicitDestination (was a plain copy of basic)
360 * Make JniException a runtime exception, so that there is no need to
361 declare the fact that you may encounter such a beast. I guess that
362 nobody will ever want to survive such error.
363 * Create specific errors for each MSG case of failure:
364 host failure, transfer failure, timeout, task cancelled
365 * Cleanup the exceptions that may get thrown by each function
366 * Other internal cleanups in Java bindings. Performance still bad :/
367 Ruby and Lua Bindings: create them
368 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
369 * That's new and great, you should try them out.
370 Same functionalities than Java bindings, only even less polished
372 * Kill the useless "rate" argument of SD_task_get_execution_time()
373 Everyone used to provide -1 as a value, it was not used, and the
374 semantic of a possible use wasn't even clear.
375 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
376 either as comm costs or compute costs to mean that there is no
377 such thing for that specific task.
378 * Add a SD_task_set_name() function
379 * Fix SD_task_unschedule() on typed tasks
380 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
381 * In DAX loader, accept useless 'level' attributes to <job> since
382 LIGO DAGs have them (seem to be to ease graphical representation).
384 * Add an example masterslave_mailbox.c using send/receive and not
385 the deprecated put/get interface.
386 * Kill the MSG_paje_output() function. It's a noop since 2 years.
387 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
389 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
390 (declare MSG_USE_DEPRECATED to still have the old name)
391 * Add a MSG_task_set_data() function
392 * About trace replay (see examples/msg/actions):
394 - Allow to work with splitted trace files for each process
395 Give the specific trace file as argument of each process,
396 and call MSG_action_trace_run(NULL)
397 You can still have one merged file for all processes.
398 - Fix implementation of collective operations
399 * Allow task_execute() on 0-sized tasks (closes #10063)
401 * This is the first release of SimGrid where SMPI is not considered
402 beta anymore (even if some corners should still be improved)
403 * Port over the new SIMIX_network submodule (internal refactoring)
404 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
405 * Implement more missing elements of the standard:
407 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
409 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
410 MPI_Scan() MPI_Get_processor_name()
411 - Added implementation of missing case for Alltoall (warning: it's
412 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
413 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
414 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
415 SMPI_MPI_Allgatherv()
417 - MPI_Waitsome() was broken
418 - Allow relative includes in smpicc
419 - Command line cfg argument 'reference_speed' was ignored...
420 - Some functions did not properly lead to auto-benching of user code
421 - smpicc passes -O2 by default (just like openmpi one)
423 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
424 * Bug fixes about timeouts during communications
425 * add SIMIX_message_sizes_output() as a pimple to write to file the
426 amount of messages per size. Use gnuplot to get histogram.
427 Pimple because that's the only user-visible function of simix,
428 defined directly in xbt.h (irk, sorry)
430 - Add a SIMIX_sem_get_capacity() function
431 - Fix interactions with processe resume/suspende
432 - release_forever() was stupidly broken
433 - Fix SIMIX_display_process_status() for processes in a semaphore
434 - Make SIMIX_sem_block_onto() user-visible
435 * Refactoring context stuff:
436 - Use pseudo-OOP for better modularity
437 - reimplement SIMIX_process_kill() without process_schedule() so
438 that the latter can take as invariant that it is called from
440 - Merge context_start into context_new for sake of simplicity
442 * Add a Vivaldi network model, coded live during SUD'10 ;)
443 * Rename configuration variables to start a hierarchy:
444 o cpu_model -> cpu/model
445 o network_model -> network/model
446 o workstation_model -> workstation/model
447 * New configuration variables:
448 o network/bandwidth_factor: correction to bandwith
449 o network/latency_factor: correction to latency
450 o netwotk/weight_S: correction to the weight of competing streams
451 * Add a long description to the models, that users can see with such
452 argument on the command line: --cfg=cpu/model:help
453 * --help-models display the long description of all known models
455 * config: add the ability to set a default value after registration
456 Does not override any previously set value (e.g. from cmd line)
457 * dict: allow to have integer key and data.
458 When so, you need to use the following functions
459 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
460 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
461 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
462 In contrary to regular dicts, the key is not malloced before copy.
463 Mixing scalar and regular elements in the same dict is not tested
465 * Allow to use xbt_dynar_shrink() to expend the dynar instead
466 Tracing for Visualization:
467 * SimGrid is now instrumented in order to generate a trace file for
468 visualization analysis: to use it, need to compile SimGrid with the
469 "tracing" option enabled, and instrument the program using SimGrid with
470 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
471 (among other functions).
472 * The instrumentation only traces the platform utilization for now
473 * Documentation to use the tracing functions and how to analyze the
474 traces with the Triva tool is written.
475 * More information about: SimGrid FAQ (in the section Tracing Simulations
478 * We moved to cmake as default build system. Autotools support will
479 be dropped soon. Check the FAQ for more info about how to use it.
480 * Greatly improved our cdash/ctest interactions
481 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
482 * Added memory checking tests with valgrind; lot of memleak fixing.
483 This may be the first release of simgrid with so few memory issues
484 * Added code coverage tests.
485 Our coverage is still improvable, but at least we see it on cdash.
487 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
489 SimGrid (3.3.4) stable; urgency=low
491 The "Desktop Grid needs love too" release (also called Xmas release).
494 * Major speedup in the maxmin system solving by using lazy evaluation
495 Instead of solving completely the maxmin system at each iteration,
496 only invalidate (and recompute) the modified parts.
497 This new feature is enabled in default models but you can try to
498 turn it on with "--cfg:maxmin-selective-update=1" for other models.
499 * Cas01 IMproved as default CPU model
500 This CPU model is the same Cas01 model, but it uses the
501 maxmin-selective-update flag and a heap structure to manage
502 actions on SURF kernel.
503 It reduces the complexity to find the next action to finish and,
504 consequently, it's faster than the old Cas01.
505 This is the new default CPU model (Cas01).
506 * Rename the old Cas01 model to Cas01_fullupdate
507 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
508 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
509 * CpuTI (CPU Trace Integration)
510 A new CPU model whose objective is simulate faster when using
511 availability trace files.
512 Instead of using a full featured, over engineered maxmin system for
513 CPU modeling, this model does the pre-integration of traces files
514 to calculate the amount of CPU power available, and so, executes
515 faster than the old CPU models.
516 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
517 * Use LV08 as default network model since it gives better accuracy
518 for small messages and shouldn't change things for big ones.
519 Use --cfg=network_model:CM02 to get the previous behavior.
522 ******************************************
523 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
524 ******************************************
525 * The new CPU model may changes simulations!
526 The point is that events occurring at the exact same timestamp
527 are not scheduled in the same order with the old and new
528 version. This may be enough to completely change the execution
529 of simulations in some cases.
530 * The new network model will change simulations!
531 This new model is more realistic than the previous one, so you
532 should consider redoing your old experiments with this model.
533 Sorry for the inconvenience.
536 * Introduce the supernovae compilation mode
537 When compiled that way, the whole SimGrid (or almost) is put in a
538 single compilation unit and compiled in one shoot.
539 This is to help gcc which has difficulties to inline stuff from one
541 The speedup seem to be above 15%, althrough more tests are needed on
542 amd64 to confirm that gain.
545 * Port of MSG's mailbox on top of SIMIX network
546 The put/get mechanism was greatly simplified on the way.
549 * New SIMIX network module. Provides:
550 - Mailbox: rendez-vous mecanism to find with who you want to speak
551 - Synchronous send/recv: easier and hopefully faster since the
552 logic is handled in the maestro process directly now
553 - Asynchronous send/recv: you dreamt of it? It's here now
554 Too bad that nobody cared enough to propagate the change to MSG.
555 * Add semaphores as SIMIX synchronization mechanism.
558 * new function SD_daxload(char*) to load a DAX file
559 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
560 * Introduce typed tasks. Specify its kind and cost at creation.
561 At scheduling, just give where it should be placed, and the cost
562 for each involved resource is automatically computed.
563 Existing constructors so far (more to come of course):
564 - SD_task_create_comm_e2e() for end-to-end communication
565 - SD_task_create_comp_seq() for sequential computation
566 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
567 * new function SD_task_dump() for debuging display
568 * new function SD_task_dotty(task,FILE*) writing to file the info
569 about the task in dotty format
570 * SD_task_dependency_exists() can now cope with having one of its
571 arguments NULL. If so, it tests whether the other argument has any
573 * Add getters on list of preceding/following tasks:
574 SD_task_get_parents(task) and SD_task_get_children(task)
575 * Add getters on amount of workstations and list:
576 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
577 * Add getter on task kind: SD_task_get_kind(task)
578 * Update the start_time and finish_time of tasks on completion/failure
579 * Bugfix: Remove task from state swags when destroyed
582 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
585 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
586 dynar with one separate thread per value of the dynar.
587 * Change the prototype of xbt_thread_create(), sorry.
588 Added a boolean parameter indicating whether we want to join this
589 thread (used in SG only for now)
590 * Implement xbt_thread_join and xbt_thread_yield in SG also.
593 * GTNetS wrappers should now be usable again (and betterly tested too)
594 * Fix a major regression from 3.2 where the timeout provided to
595 MSG_task_put_with_timeout() was used as absolute time before which
596 the comm should be done.
597 * Start to fix the <cluster> tag.
598 - Internal links should be good now (beside of the loopback, which
599 use the private link instead)
600 - paths to the external world is still rather broken
601 - the <route:multi> tag is just broken. Actually that's brain-dead.
602 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
603 to make it less stupid
604 ** Check your platform with teshsuite/simdag/platforms/flatifier **
605 * Fix a source-level compatibility glitch from 3.2: after defining
606 MSG_USE_DEPRECATED, you can use the old name
607 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
608 * Allow to compile from the SVN with automake 1.11
609 * Fix some problems when using the "start_time" tag in deployment XMLs.
610 * Fix #8569: XBT/synchro.h has redundant declarations
611 * Fix #8563: MSG return values and exceptions
612 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
613 * Integrate patch #8636: Obey DESTDIR when installing documentation.
614 Thanks to Robson Peixoto.
615 * Fix a vicious bug in dictionaries inducing that some elements were
616 not freed on xbt_dict_free()
618 Portability report of this version:
619 * Main portability targets:
620 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
622 - mac leopard on i386
623 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
624 but nothing critical.
625 * Other platforms: windows, AIX and others were not tested for this release
627 Timing report of this version:
628 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
629 scenario parameters). From 8h to a few seconds in desktop grid settings.
630 * Supernovae brings about 25% speedup on i386.
632 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
634 SimGrid (3.3.3) stable; urgency=low
636 The "Need for Speed" release.
638 The timings done to validate the 3.3.2 were faulty.
639 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
641 The problem was a conversion from a manually handled vector to
642 xbt_dynar_t on the critical path.
643 xbt_dynar_foreach calls functions, inducing stack management crap.
645 We inlined these functions and xbt_dynar_foreach is now breath taking.
646 We also inlined xbt_swag_belong on the way.
648 Here are some approximate speedup measurements (on master/slaves
649 simulations lasting between 10s and 20s each):
650 3.3.1 -> 3.3.2: about same performance
651 3.3.2 -> 3.3.3: 40% speedup
652 3.3.1 -> 3.3.3: 40% speedup
653 3.3.1 with inline patch -> 3.3.3: 30% speedup
655 Our reading is that the refactoring which occurred in 3.3.2 made us
656 suffer much more from the xbt_dynar_foreach low performance, but
657 once we solved this, this refactoring proved to be very performance
658 effective. From the 40% speedup, somehow, 10% are due to the
659 inlining and 30% to the refactoring.
661 That's a pitty that gcc cannot inline functions placed in other files
662 alone. We have to choose between:
663 - break the encapsulation (by putting private data structures and
664 accessors in headers files to help gcc)
665 - live with low performance
666 - switch to a decent compiler such as icc (not quite possible).
668 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
670 SimGrid (3.3.2) stable; urgency=low
672 The "Simplicity does not preceed complexity, but follows it" release.
674 The main contributors of this release were (lexical order):
675 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
678 * Extract the routing logic into its own object.
679 (was dupplicated in network.c and workstation_LV07.c;
680 Allows to implement other ways of storing that info)
681 => kill now useless network_card concept
682 - Use dynar to represent routes (instead of void** + int*)
683 - kill link_set (use surf_network_model->resource_set instead)
684 - Add a command-line option to choose the routing schema to use
685 - Add three new models:
686 * Floyd (shortest path computed at initialization)
687 * Dijikstra (shortest path recomputed all the time)
688 * Cached Dijikstra (shortest path computed on need)
689 All these models where contributed by Silas De Munck, and are
690 described in his ICCS09 paper.
692 * Simplify model declaration
693 (less redirections, less function to write when defining a model)
694 - Factorize stuff between models:
697 surf_model_resource_set(model)
698 surf_model_resource_by_name(model, name)
699 - Unify the types of models in s_surf_model_t (using an union)
700 - Embeed fields of common_public directly into s_surf_model_t
701 - Rename model methods:
702 action_free ~> action_unref
703 action_change_state ~> action_state_set
704 action_get_state ~> action_state_get
705 - Change model methods into functions :
706 (model)->common_public->action_use ~> surf_action_ref
708 * Implement a generic resource; use it as ancestor to specific ones
709 (allows to kill duplicated code in models)
710 Drawback: timer command don't need no name nor properties;
711 workstation_CLM03 don't need no properties
712 (but I guess we can live with those few bytes wasted)
714 * Improve the action object model
715 - implement a constructor avoiding dupplicated code about field
716 initialization in generic_action part.
718 * Kill the SDP model: it has an external dependency, is deprecated
719 in flavor of modern lmm models, and didn't compile since a while
722 * Relocation of the context module from XBT to SIMIX.
723 (the context were decoupled from the simix processes, duplicating a lot of code)
724 => a lot of code was factorized
725 - less overhead is introduced during scheduling
726 - simpler API for the context factory
727 - the logic for process creation,destruction and manipulation was simplified
728 * Simplification of the s_smx_process_t data structure.
729 => accesing the simix level data associated to a process is faster now,
730 and the code is a lot more readable.
733 * Implement some more MPI primitives:
734 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
735 -implementation: Bcast: flat or 2-ary tree (default),
738 Allreduce: Reduce then Bcast
739 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
740 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
741 Alltoallv: flat tree, like ompi
743 * Add support for optimized collectives (Bcast is now binomial by default)
744 * Port smpirun and smpicc to OS X
747 * Kill SD_link_get_properties: hard to maintain and makes very little sense
748 Shout out if you used it.
751 * Display the list of still queued messages in SG mode when existing
755 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
756 * Add xbt_graph_node_get_outedges() [Silas De Munck]
757 * Add xbt_str_from_file(FILE*)
758 * Add xbt_dict_get_key achieving a linear reverse search
759 * Remove the context module
761 Portability report of this version:
762 * Main portability targets:
763 - Linux(debian)/x86/context
764 - Linux(debian)/x86/pthreads
765 - Linux(debian)/amd64/context
766 - Linux(debian)/amd64/pthreads
767 On these, we still have the eratic breakages of gras/pmm and
768 amok/saturate_sg reported in previous version. We still think
769 that the tests are the cause of the fault, not the tested code.
771 - Mac OSX Leopard/x86/context
772 Still false negative in tesh autotesting.
773 Smpi still fails, but this time because readlink does not accept -f
774 Everything seems to work properly beside of that.
777 - AIX version 5.3 (only tested contexts this time)
778 Smpi still fails there because mktemp is not installed.
779 Everything seems to work properly beside of that.
781 I managed to compile it for the first time, but several breakages.
782 Won't delay the release for this exotic platform.
784 * Windows: it's still lagging behind. If you want to help, please
787 Timing report of this version:
788 This version seem to be more than 5% faster than 3.3.1 (on linux
789 64bits with contextes). The gain is less than expected, we are
790 investigating this for next release.
792 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
794 SimGrid (3.3.1) stable; urgency=low
797 * Implement a --cfg-help to show existing configuration variables
798 * Build chain do not require doxygen in maintainer mode
801 * fix a bug on struct sizeof computation, which prevented the
802 exchange of arrays of structs in some conditions
803 - added a regression test about this in datadesc_usage
804 * Allow the exchange of 0-long dynamic vectors.
805 - for that, use -1 as indicator of dynamic size instead of 0
806 - This implied to change any size from unsigned long to long,
807 reducing a bit communication abilities, but I guess that with
808 64bits being quite common, this is more than enough.
809 - This also induce a protocol change, thus bumping network protocol
810 version from 0 to 1 (if we have external users, we have to get
811 clean on that point too ;)
812 - added two regression tests about this in datadesc_usage
813 * Be more verbose when propagating local exceptions
814 This helps debugging.
815 * Display the status of simulated processes when receiving SIGINT in
819 * Allow to control the simulation from a trace file.
820 New functions MSG_action_register() and MSG_action_trace_run()
821 The first one allows to associate a function execution to each
822 kind of action while the second one parses a trace file and
823 triggers the corresponding actions within the system.
824 For now, only a toy example is provided in examples/msg/actions
825 * Add an exemple of process migration in examples/msg/migration
826 * Fix a bug in task exchange which broke MSG_task_get_sender()
827 Add a teshsuite regression test for that.
828 [Bug: if MSG_task_get_sender() is called after sender exit,
830 * Fix a bug which prevented suspend/resume to work properly
831 * Display the status of simulated processes when receiving SIGINT
832 This fixes a regression of v3.3. due to the introduction of SIMIX
833 * Bug fixing in failure management:
834 - trace could not start by a failure at time 0
835 - failure during communications were not working
838 * Add SIMIX_process_set_name() to change the name of the current
839 process in the log messages.
840 * Store smx_hosts in a dict since we only retrieve them by name
841 * Move the configuration infrastructure to surf
844 * Move the configuration infrastructure to surf
847 * Massive internal cleanups:
848 - Store internal structures on processes instead of hosts (allows
849 to have more than one process per host, in addition of being more
851 - Cleanup the initialization/finalization process
852 - Kill a whole bunch of unneeded synchronization:
853 processes run in exclusive manner within the simulator
854 - Move queues from global tables to process data fields
856 - now accept -platform and -hostfile arguments
857 - Pass the right rank value to processes according to the hostfile
858 * Compile the examples by default, and use them as regression tests
859 * Implement MPI_Wtime()
860 * Change the reference speed to a command line option
863 * TCP_gamma can now be specified as command line option using
864 --cfg=TCP_gamma:10000000.0
865 * Change the --surf-path cmd line option into --cfg=path:
868 * Also include strbuff from xbt.h public header
869 * xbt_ex_display(): do not free the exception after displaying
870 This allows to do more with the given exception afterward.
871 Users should call xbt_ex_free() themselves.
875 Portability report of this version:
876 * Main portability targets:
877 - Linux(debian)/x86/context
878 - Linux(debian)/x86/pthreads
879 - Linux(debian)/amd64/context
880 - Linux(debian)/amd64/pthreads
881 These targets fail about 1/10 of times on gras/pmm, but we believe
882 that this is because of the test, not because of simgrid.
883 amok/saturate_sg fails even more rarely, and the test may not be
886 - Mac OSX Leopard/x86/context
887 The test suite still spits tons of errors because some obscure
888 force prevents us from removing the temporary directories
889 arguing that they still contain some metadata I've never heard of.
890 Smpi fails because seq is not installed.
891 Everything seems to work properly beside of that.
894 - AIX version 5.3 (both contexts and pthread)
895 Smpi still fails there because mktemp is not installed.
896 XML inclusions seems rosty on AIX.
898 * Windows: it's still lagging behind. If you want to help, please
901 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
903 SimGrid (3.3) stable; urgency=high
907 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
910 * Introduce the SIMIX module: factorize code between MSG and GRAS.
913 Until now, GRAS were using MSG as an interface to SURF. It was
914 quite difficult because both interface have several differences
915 (MSG channels vs GRAS sockets were the most notable point).
917 This also opens the gate to SMPI (which should occur soon) and speed
918 up simulations by to 40% (even if it were not the main goal).
920 **************************************
921 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
922 **************************************
923 The point is that events occuring at the exact same timestamp are
924 not scheduled in the same order with the old and new version. This
925 may be enough to completely change the execution of simulations in
926 some cases. Sorry for the inconvenience.
928 * Cleanup and upgrade the XML format to push further scalability
929 issues (check http://hal.inria.fr/inria-00256883/ for more info)
931 * Improve the testing infrastructure with tesh. Now a very large part of
932 the code is tested not only by being run but also by checking that the
933 output match an expected output [Mt].
935 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
936 is really less memory-demanding, which should allow you to use
937 larger files in SimGrid [AL].
939 * Inform valgrind about our contextes, so that it becomes usable
940 with the default (and more effecient) version of SimGrid
941 [contributed by Sékou Diakite, many thanks]
944 * Introduce a listener thread in charge of receiving incomming
945 messages from the network. It allows to overlap communication and
946 computation but most notably, it removes some stupid deadlocks due
947 to the fact that so far, a process could not send and receive at
948 the same time. This made most non trivial communication schema
950 * Convert the PIDs from long int to int to match the MSG ones (and
952 * New function: gras_agent_spawn() to launch a new process on
953 current host. Only working in simulation for now. [Mt]
954 * New function: gras_os_hostport() returning a constant form (ie,
955 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
958 * Make the backtrace of exceptions more human readable [Mt]
959 * New module: xbt/str [Mt]
960 a ton of string utility functions (split, join, printf to a newly
961 allocated buffer, trim, etc)
962 * New module: xbt/hash [Mt]
963 SHA1 hashing algorithm (more to come if needed)
964 * New module: xbt/synchro [Mt]
965 synchronization tools (mutex and conditions) working the same way
966 in simulation and in real life (mainly useful for GRAS, but not
968 * New module: xbt/queue [Mt]
969 classical producer/consumer synchronization scheme
970 * xbt_dynar_new_sync() creates a synchronized dynar. All access
971 (using the classical functions will get serialized) [Mt]
972 * Make dictionary internal table dynamic. No need to specify its size
973 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
975 * Make sure the log channels are organized as a tree under windows
976 (because of ANSI C compatibility issue, any channel were child of
980 * Cleaned many thing in surf and fixed a few bugs [AL].
981 * Add a nice command line configuration mechanism to compose models [AL].
982 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
983 the previous one (KCCFLN05). It relies on something that looks like
984 a max-min sharing mechanism but cannot be written as such. A new solver
985 was thus designed [AL].
986 * Add a new solver to lmm. Based on Lagrange optimization and
987 gradient-based descent, it enables to efficiently maximise systems s.a
989 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
991 This solver enables to propose two new network models for TCP Reno and
992 TCP Vegas based on Low's work. These models still need to be fully
993 tested though [Pedro Velho].
996 * Bug fix in SD_simulate. Now the time bound given as argument is
998 * Use the new parallel task model (ptask_L07) as default.
999 * Use the SURF command line configuration mechanism.
1000 * 0-size tasks (for synchronization) should now work.
1002 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
1004 SimGrid (3.2) stable; urgency=high
1008 We still experience issues on this platform, but we believe that at
1009 least MSG is usable.
1011 GRAS API BREAKAGE (for simplification purpose, sorry):
1012 * the gras_msgtype_by_name is not used anymore. Instead of
1013 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
1014 you can write (and must)
1015 gras_msg_send(toserver, "request", &request);
1016 - If you still want to pass a gras_msgtype_t to the function (to cache
1017 the type and avoid the lookup time), use the gras_msg_send_() variant.
1018 - Impacted functions:
1019 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
1020 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
1021 * The callbacks are now expected to return 0 when everything went well
1022 (just like the main() function)
1024 GRAS new features and improvements:
1025 * New module mecanism where user code can use per process globals [Mt]
1026 This is similar to gras_userdata_*() functions, but for libraries. It
1027 factorize some code developped over and over in the examples and AMOK.
1028 It has still to be documented and used (only amok/peermanagement is
1030 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
1031 loss when they were small enough to fit into the buffer and sent quickly
1032 enough so that they can all get received in one shoot.
1033 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
1034 if not found. Use the *_or_null() variant for the old semantic.
1035 * In gras_msg_handle, do not discard messages without callback.
1036 They are probably messages to be explicitly awaited later (ie, proofs of
1037 mis-synchronization in userland since they are sent before being awaited)
1038 No big deal usually.
1039 * gras_socket_meas_send/recv: semantic changed!
1040 The numerical arguments used to be (1) the total amount of data to send
1041 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
1042 messages. This was need for the fool willing to send more than MAXINT
1043 bytes on quite fat pipes.
1046 * Do really rename the hostmanagement module to peermanagement. [Mt]
1047 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
1048 but this is rather new and this was documented in the module
1049 documentation (poor excuses, I admit)
1050 * Bandwidth measurement semantic changed! This follows the changes to
1051 gras_socket_meas_send/recv explained above.
1054 * A sequential mode has been added to the workstations. When a workstation
1055 is in sequential mode, it can execute only one task, and the other tasks
1056 are waiting in a FIFO. [Christophe Thiery]
1059 * The KCCFLN05 workstation model now handles parallel tasks. It is the
1060 model for SIMDAG. [Christophe Thiery]
1061 * Bug fix in the maxmin solver: Some values were close to 0 instead of
1062 equal to 0, which caused some bad behaviors in
1063 saturated_constraint_set_update. I now use a threshold mechanism like in
1067 * When running manually src/testall, you select specific units [Mt]
1068 testall is the result of our cunit mecanism, and should replace all
1069 the scripty thingy around since bash don't run easily on billware.
1071 * A mallocator system has been added. [Christophe Thiery]
1072 Mallocators allow you to recycle your unused objects instead of freeing them
1073 and allocating new ones.
1075 Documentation update:
1076 * FAQ reworking + New FAQs:
1077 - "Valgrind spits tons of errors!" [Mt]
1078 - "How to repport bugs" [Mt]
1079 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
1080 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
1081 - Communication time measurement within MSG [AL]
1082 - I experience weird communication times when I change the latency [AL]
1083 * GRAS tutorial [Mt]
1085 - an introduction to the framework and to the used communication model
1086 - an initiatic tour introducing the most proheminent features:
1088 . Lesson 0: Installing GRAS
1089 . Lesson 1: Setting up your own project
1090 o Part 2: Message passing
1091 . Lesson 2: Exchanging simple messages
1092 . Lesson 3: Passing arguments to the processes (in SG)
1093 . Lesson 4: Attaching callbacks to messages
1094 . Lesson 5: Using globals in processes
1095 . Lesson 6: Logging informations properly
1096 . Lesson 7: Using internal timers
1097 . Lesson 8: Handling errors through exceptions
1098 . Lesson 9: Exchanging simple data
1099 . Lesson 10: Remote Procedure Calling (RPC)
1100 . Lesson 11: Explicitely waiting for messages
1101 . Recapping of message passing features in GRAS
1102 - A HOWTO section containing:
1103 o HOWTO design a GRAS application
1104 More are due, of course. They will come latter. In the meanwhile, you can
1105 check the examples which are still here.
1107 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
1109 SimGrid (3.1) stable; urgency=high
1113 There was a stack corruption somewhere, visible only when optimizing
1114 with these versions. [Vince]
1117 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
1118 module that enabled to play with Directed Acyclic Graphs. It is built
1119 directly on top of SURF and provides an API rather close to the old
1120 SG. Some old codes using SG are currently under rewrite to check that
1121 all needful functions are provided. [Christophe Thiery]
1124 * Complete rewrite of the KCCFLN05 workstation model. It is now an
1125 extension of the classical CLM03 model that gracefully handles
1126 failures. This is now the default model for MSG and GRAS. It doesn't
1127 handle parallel tasks yet though. [AL]
1128 * Bug fix: Weights were not correctly set in the network part.
1129 WARNING: This may have resulted in incorrect results with simulations
1130 where there are more than one flow on a given link. [AL]
1133 * After a (long ?) discussion on simgrid-devel, we have decided that the
1134 convention we had on units was stupid. That is why it has been decided
1135 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
1136 WARNING : This means that all previous platform files will not work as
1137 such with this version! A warning is issued to ask users to update
1139 A conversion script can be found in the contrib module of the CVS, under
1140 the name contrib/platform_generation/surfxml_update.pl [MQ]
1143 * Bug fix: Processes were started in reverse order, wrt deployment file.
1144 WARNING: if your code relies on this bug, please fix it. [AL]
1145 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
1146 being executed on two different locations. [AL]
1147 * Bug fix: Failures are now better supported thanks to Derrick's tests
1148 (there was many failure situations I hadn't thought of and that weren't
1149 correctly handled). [AL]
1150 * New function: MSG_host_is_avail indicates you whether a given m_host_t
1154 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
1155 Exception occurring on server-side are propagated back to client (!).
1157 API CHANGE: the callback changed their prototype. Change:
1158 int my_handler(gras_socket_t expeditor, void *payload_data) {
1160 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
1161 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
1163 * New! function: gras_msg_handleall to deal with all messages arriving
1164 within a given period.
1165 * New! function: gras_socket_server_range to get a server socket in a
1166 range of port numbers (ease to avoid port number conflicts) [MQ]
1167 * New! gras processes display their backtrace when they get a SIGUSR1
1168 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
1169 Sweet to debug RL processes [MQ]
1173 - Do not force experiment sizes to be expressed in kb, or it becomes
1174 impossible to measure the latency this way (needs one byte-long tests)
1175 WARNING: this changes the amok_bw_* function semantic. [MQ]
1176 - Implements the link saturation stuff. [MQ]
1177 * Peer management module:
1178 New! module factorizing code that we wrote over and over [MQ].
1181 * New module: cunit (my jUnit implementation in ansi C) [MQ]
1182 - Test units are placed directly into the library code, they get extracted
1183 automatically and placed into the src/testall binary.
1184 - Convert most of the XBT tests to this system.
1185 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
1186 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
1187 live in the same C code. This required to change a little bit the API
1188 of surfxml parsing but shouldn't be an issue for end-users. [AL]
1189 * New module: sparse graph structure with basic algorithms (this is work
1190 in progress and the API is not considered to be frozen yet). [AL]
1191 * Display more information on backtraces: source line & function names are
1192 now displayed just like valgrind does (rely on addr2line tool) [MQ]
1193 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
1194 * Reworked a little bit some #include statements to load only required
1195 headers. Some user code that relied on SimGrid to include stdlib or
1196 stdio may need to include it by themselves. [AL]
1197 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
1199 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
1200 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
1201 but I guess that almost nobody used those parts. [MQ]
1203 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
1205 SimGrid (3.0.1) stable; urgency=low
1208 * Unfortunately, I had missed 5 misnamed functions:
1209 xbt_fifo_item_t xbt_fifo_newitem(void);
1210 void xbt_fifo_freeitem(xbt_fifo_item_t);
1211 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
1212 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
1213 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
1214 They're now deprecated. Please use their new versions:
1215 xbt_fifo_item_t xbt_fifo_new_item(void);
1216 void xbt_fifo_free_item(xbt_fifo_item_t);
1217 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
1218 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
1219 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
1221 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
1222 * Documentation: xbt_log module unmercifully reworked [MQ]
1223 * Bugfix: there was a problem with the ending of contexts with
1224 the pthread backend. It caused some weird deadlock or behavior
1225 depending on the pthread implementation. [AL]
1226 * Bugfix: get the exceptions raised in the simulator repport where
1227 and why they come from when they are not catched in time [AL, MQ]
1230 * Bugfix: Do repport the error when two non-connected hosts try to
1231 exchange data (Thanks to Flavien for stumbling into this one) [AL]
1234 * Add additionnal checkings on communications. Assert that two
1235 communicating hosts are connected by a set of links... [AL]
1238 * Add additionnal checkings on channel values in communication [AL]
1239 * New: MSG_task_get_source to see on which host a task was generated [HC]
1240 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
1241 the number of tasks waiting to be received on channel and sent
1243 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
1244 waits for the first task coming from a given host.. [AL]
1246 GRAS new functionnalities: [MQ]
1247 * Enhance the parsing macro to allow the size of multidimentional objects
1248 to be given thru annotations.
1249 * New example (and documentation): Matrix Multiplication a la RPC
1250 (as when I was young!) and fix a bunch of bugs found on the way.
1252 GRAS performance improvements: [MQ]
1254 * Reduce the amount of cbps creation/destruction by making it static to
1255 datadesc_send/recv() and using a (newly created) cbps_reset (based on
1258 * Change libdata to a set so that we can search for stuff by ID (and thus
1259 reduce the insane amount of dict lookups)
1262 * Actually implement gras_datadesc_copy() so that we don't have to mimick
1263 RL communication on top of SG since it's so uneffective.
1264 It may also be used for inter-thread communication in RL, one day.
1265 * Use gras_datadesc_copy() to exchange messages on top of SG
1267 - improve message exchange performance on top of SG
1268 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
1269 * Don't exchange on the network the size of the used part of buffer,
1270 instead, specify the possible buffer size to read().
1272 - reduces the amount of read/write calls (one pair per exchange)
1273 - reduces the amount of exchanged data (the size)
1274 - allows to retrieve all arrived data on receiver side, if we don't need
1275 it right now (subsequent read will peek the buffer)
1276 - allows the receiver to proceed with the begining of the stream before
1277 everything is arrived
1278 - make it possible to build an iov transport (using readv/writev)
1280 - take care of the data with non-stable storage (like stacked data),
1282 * If possible, TCP send uses vector I/O (when writev() is here)
1283 - Don't use it for receive since we send data sizes and data on the
1284 same stream, so we wouldn't be able to chain large amount of chunks
1285 before having to flush the stuff to read the size.
1286 * Rework the transport plugin mecanism to simplify it and reduce the
1287 amount of pointer dereferencement when searching for the right function
1290 * I guess that now, we do almost as few system calls as possible while
1291 doing as few data copy as possible.
1293 To improve it further, we could try to send all the sizes first and then
1294 all the data (to use iov on receiving size), but it's only a partial
1295 solution: when you have 2 dimensional data, the sizes of the second
1296 dimension is data of the first dimension, so you need 3 streams.
1298 I'm not sure the potential performance gains justify the coding burden.
1300 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
1302 SimGrid (3.00) stable; urgency=high
1305 * New! Give the possibility to hijack the surf parser and thus bypass
1306 MSG_create_environment and MSG_launch_application. Have a look at
1307 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
1309 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
1311 SimGrid (2.96) unstable; urgency=low
1316 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
1317 This deprecates the xbt_error_t mecanisms.
1318 It modifies (simplifies) all XBT and GRAS API.
1319 MSG API keeps unchanged (exceptions raised by XBT are catched from
1320 within MSG and masked with existing error handling facilities)
1323 * New! Add a FATPIPE model. [AL]
1324 * New! Add a parallel task model. [AL]
1325 * New! Add automatically a loopback interface (in the default
1326 network model) if none was precised.
1329 * Bugfix: MSG_process_resume now works with the current running process.
1331 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
1332 * Modification of MSG_task_get_compute_duration. Once a task has been
1333 processed, the value returned by this function is now equal to 0. [AL]
1334 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
1335 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
1336 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
1337 of a m_task. For now, MSG_task_cancel only works with computation
1339 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
1340 of the processor (in Mflop/s) regardless of the current load on the
1342 * API Change: use proper naming convention for MSG_getClock and
1343 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
1345 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
1346 This function changes the priority of a computation task. This priority
1347 doesn't affect the transfer rate. A priority of 2 will make a task
1348 receive two times more cpu power than the other ones. This function
1349 has been added to suit the needs of Nguyen The Loc and hasn't been that
1350 much tested yet. So if it fails, please report it and send me your code.
1352 * API Change: removed all functions and types that were marked "deprecated"
1353 since many months. Renamed MSG_global_init_args to MSG_global_init.
1355 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
1357 SimGrid (2.95) unstable; urgency=low
1360 * Steal some nice code to GNU pth to fix context detection and usage [AL]
1361 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
1362 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
1365 * Bugfix: Allow absolute paths for platform description files [MQ]
1366 * Bugfix: do free the variables after use. Leads to drastic performance
1368 * Implement max_duration (ie, timeouts) on resources [AL]
1371 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
1373 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
1374 the needed support (timeouts) [AL]
1377 * Implement measurement sockets. You can now get the bandwidth between two
1378 hosts thanks to AMOK (see below). [MQ]
1379 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
1380 dynar over the network (yeah) [MQ]
1381 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
1382 * simple/static token-ring example. [Alexandre Colucci and MQ]
1383 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
1384 in place before [MQ]
1387 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
1388 type parsing. "short" and "long" modifiers were also ignored; other
1389 modifier (such as reference level) are still ignored. [MQ]
1390 * Embeed the buffer size within the buffer itself on SG. [MQ]
1391 That way, send() are atomic and cannot get intermixed anymore (at least
1392 the ones which are less than 100k; bigger messages still have the issue)
1393 * Array size pushed by the field, not by the field type (or each
1394 and every long int will push stuff to the cbps) [MQ]
1395 * use select() to sleep since it allows to portably sleep less than one
1398 GRAS (minor cleanups)
1399 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
1402 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
1403 * type category 'ignored' killed as it was never used and were difficult
1405 * whether a type can cycle or not is now a flag, leaving room for more
1406 flags (as "ignored", if we feel the need one day ;)
1407 * Rename raw sockets to measurement sockets since "raw" has another
1408 meaning in networking community.
1411 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
1412 and offers features not belonging to GRAS but that most applications
1413 need. One day, it may be a set of plugins loadable at runtime.
1414 * New module: bandwidth
1415 bandwidth measurement between arbitrary nodes running this module. [MQ]
1417 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
1419 SimGrid (2.94) unstable; urgency=low
1421 The first beta release of SimGrid 3 !
1425 * Update the main page and the FAQ. Adding references to gforge.
1428 * Add a gras_os_getpid function.
1431 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
1432 * Extend the logs so that they also print PID, hostname, date, ... if
1434 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
1435 and kill the old version which were in testsuite/
1436 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
1440 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
1441 for users. Instead, each programming environment (GRAS, MSG,...) use it
1442 when needed to provide such a feature to users.
1443 Don't shortcut the mecanism or you will also shortcut the virtualization
1444 you need on the simulator.
1448 * Cleanups in configury with regard to compile optimization/warning flags.
1449 Also add -fno-loop-optimize to any powerpc since it's the optimization
1450 killing gcc (< 3.4.0).
1451 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
1452 needed by MSG examples complications
1453 * Borrow configury beautifications from PHP
1456 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
1457 warning (thanks loris for stumbling into this one).
1458 * Bugfix: stop loading private headers (gras_config.h) from the public
1462 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
1463 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
1464 RL would imply a DNS resolver, which is *hard* to do in a portable way
1465 (and therefore delayed).
1466 * Implement a real timer mecanism and use it in timing macros. This allows
1467 to avoid rounding errors and get a 0.000005 sec precision in timing
1468 macros. While I was at it, various cleanups:
1469 - allow to declare more than one timed section per file (fix a stupid bug)
1470 - move some private declaration to the right place
1471 - merge conditional execution and timing macros into emulation module
1472 - document the module
1473 - make sure the module cleanups its mess on gras_exit
1474 * Documentation improvements:
1475 - (new) how to compile applications using GRAS
1476 - (new) emulation support (timing macros)
1478 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
1480 SimGrid (2.93) unstable; urgency=low
1482 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
1485 - Use Paje properly where used. Still to be sanitized properly.
1486 - Portability fix: Add an implementation of the contexts using pthread
1490 - Add xbt_procname(): returns the name of the current process.
1491 Use it to show the current process's name in all logging.
1493 - fix detection of older flex version and the reaction, since we do
1494 depend on modern ones (we use lex_destroy)
1495 - Better separation of SG and RL in the libs: remove all simulation code
1496 from libgras. As a result, this lib is now only 200k when stripped.
1497 Some of the xbt modules may also be duplicated (two sets and such) and
1498 should be cleaned/killed before SG3.
1499 - Insist on using xlC on AIX because of weird problems involving gcc there.
1500 - Cleanup the make remote stuff. This is now done by scripts
1501 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
1502 mainly for our private use, but we're working on changing them to user
1505 - Bugfix: flush the socket on close only if there is some *output*.
1506 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
1508 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
1511 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
1513 SimGrid (2.92) unstable; urgency=low
1515 Alpha 3 on the path to SimGrid 3
1519 - New! First try of benchmarking macros.
1520 - New! First try so that gras_stub_generator generate deployment and
1521 remote compilation helpers.
1523 - Bugfix: Initialization fix in msg_test.
1527 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
1529 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
1531 - API Change: gras_os_sleep to take the amount of seconds as a double.
1532 Accepting an int was error prone since it was the only location where
1533 seconds were coded as such. It leaded to damn rounding errors.
1534 - Bugfix: Hard to belive that timers ever worked before this.
1536 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
1538 SimGrid (2.91) unstable; urgency=low
1540 Alpha 2 on the path to SimGrid 3
1544 - Bug fix in the lmm_solver.
1546 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
1547 through the function MSG_paje_output.
1548 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
1549 - It is possible to bound the rate of a communication in MSG with
1550 MSG_task_put_bounded() (was already in the previous version but I had forgotten
1551 to write it in the changelog).
1552 - Bug fix to let GRAS run on top of MSG until we move it directly on top
1557 - Various cleanups to the autotools stuff
1558 - Begin to move Gras examples to examples/gras/
1559 - Let make distcheck work again (yeah!)
1561 - documentation overhauled using doxygen.
1562 gtk-doc-tools is dead in SimGrid now.
1563 - Automatically extract all existing logging categories, and add the list
1564 to the documentation (long standing one, to say the less)
1566 - Cleanup the known architecture table. Reorder the entries to group what
1567 should be, and use a more consistent naming scheme.
1568 (some of the test dataset are still to be regenerated)
1569 - New! Allow library to register globals on each process just as userdata
1571 This is implemented using a xbt_dict and not a xbt_set, so we loose the
1572 lookup time (for now).
1573 Use it in msg and trp.
1574 This cleans a lot the internals and helps enforcing privacy of the
1575 headers between the gras components.
1576 - New! Add a timer mechanism, not unlike cron(8) and at(1).
1577 - Bugfix: gras_os_time was delirious in RL.
1578 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
1580 - Reenable GRAS now that it works.
1582 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
1584 SimGrid (2.90) unstable; urgency=low
1586 Alpha 1 on the path to SimGrid 3
1588 * It is a long time since the last release of SimGrid. I'm sorry about
1589 that but as I had told you, I was rewriting a lot of things. I apologize
1590 to those who had been reporting bugs to me and that I had not answered.
1591 If your bug is still in the new version, please tell me. Here is a
1592 summary of the main changes.
1594 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
1595 lead by Martin Quinson. As a consequence SimGrid gains a lot in
1596 portability, speed, and a lot more but you'll figure it out later.
1597 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
1598 I wanted to release the new MSG as soon as possible and I have
1599 broken GRAS, which is the reason why, for now, only MSG is fully
1600 functional. A laconic description of these projects is available
1601 in the documentation.
1603 * REVOLUTION 2: I have removed SG and I am now using a new simulation
1604 kernel optimized for our needs (called SURF but only the developers
1605 should use it). Hence, MSG is now roughly 30 times faster and I think
1606 that by rewriting a little bit MSG, I could event speed it up a little
1607 bit more. Beside the gain in speed, it is also much easier to encode a
1608 new platform model with SURF than it was with SG. More to come...
1610 * REVOLUTION 3: I have tried to change a little as possible the API of
1611 MSG but a few things really had to disappear. The main differences
1612 with the previous version are :
1613 1) no more m_links_t and the corresponding functions. Platforms are
1614 directly read from a XML description and cannot be hard-coded
1615 anymore. The same format is used for application deployment
1616 description. The new format is described in the documentation.
1617 Have a look in tools/platform_generation. There is a tiny script
1618 that converts from the old platform format to the new one. Concerning
1619 the application deployment format, parsing the old one is tricky.
1620 I think most of you should however be able to convert your files. If
1621 it is really an issue, I can write a C code that does the conversion.
1623 2) the toolbox tbx does not exist anymore. We now have a library
1624 with much more data-structures but without the hash-tables (we have
1625 dictionaries that are much faster).
1627 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
1629 *****************************************************************************
1630 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
1631 * don't feel like converting the oldies. (Mt) *
1632 *****************************************************************************
1635 Version 2.90: "the long awaited one"
1636 - Finished rewriting and debugging MSG. Rewrote the documentation.
1637 - disable GRAS for now since it needs to be ported to the newest SG
1640 - Finish the port to windows (using mingw32 for cross-compile)
1643 - Main loop and datastructures of SURF. A cpu resource object is
1644 functional. Surf can thus be used to create cpu's with variable
1645 performance on which you can execute some actions.
1647 2004-11-15 Martin Quinson
1648 - Port to ARM. Simply added the alignment and size descriptions. Should
1649 work, but the ARM machines are so slow that I didn't had the opportunity
1650 to 'make check' over there yet.
1652 2004-11-15 Arnaud Legrand
1653 - Trace manager now written. It uses a heap structure and is therefore
1654 expected to be efficient. It may however be speeded up (particularly
1655 when many events occur at the same date) by using red and black
1656 trees. One day maybe...
1657 - Max-min linear system solver written. It uses a sparse matrix
1658 structure taking advantage of its expected use. Most operations are
1659 O(1) and free/calloc are called as few as possible. The computation of
1660 the minimum could however be improved by using a red and black tree
1663 2004-11-03 Arnaud Legrand
1664 - Rename every gras_* function that was in xbt/ to its xbt_
1666 - Add a heap and a doubly-linked list to xbt
1667 - Added a dichotomy to the dictionaries. make check works as well before
1668 so I assume that the patch is correct. I do not know however if things
1669 run effectively faster than before now. :)
1671 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
1672 SimGrid, and the version number is bumped to 2.x
1674 2004-10-29 Martin Quinson
1675 - Introduction of the remote errors.
1676 They are the result of a RMI/RPC on the remote machine.
1677 ErrCodes being scalar values, you can't get the host on which those
1678 errors did happen. Extending the error mechanism as in Gnome is possible.
1679 No idea yet whether it is a good idea.
1681 2004-10-28 Martin Quinson
1682 - Interface revolution: the Starred Structure Eradication.
1683 I used to do typedef struct {} toto_t; and then handle *toto_t.
1684 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
1685 - ???_t is a valid type (builded with typedef)
1686 - s_toto_t is a structure (access to fields with .)
1687 - s_toto is a structure needing 'struct' keyword to be used
1688 - e_toto_t is an enum
1689 - toto_t is an 'object' (struct*)
1691 typedef struct s_toto {} s_toto_t, *toto_t;
1692 typedef enum {} e_toto_t;
1693 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
1694 s_toto_t) is private.
1696 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
1697 so that it can set the variable to NULL. It was so for dicts and sets,
1698 it changed for dynars.
1700 - Fix a bunch of memleaks in dict_remove
1701 - Fix a bug in sg/server_socket opening: it failed all the time.
1703 2004-10-07 Martin Quinson
1704 - Speed up dynar lookup operation a bit.
1706 gras_dynar_get is dead.
1708 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
1709 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
1710 (which gives you the address of the stored data).
1712 gras_dynar_get_as is an helpful macro which allows you to retrieve a
1713 copy of the data using an affectation to do the job and not a memcpy.
1715 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
1716 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
1718 It does not really speedup the dynar test because they are
1719 setting elements all the time (and look them seldom). But the dict does
1720 far more lookup than setting.
1722 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
1724 2004-10-05 Martin Quinson
1725 - Allow to (en/dis)able the cycle detection at run time.
1727 Whether we should check for cycle or not is now a property of each
1728 datatype. When you think there may be some cycle, use datadesc_cycle_set.
1729 datadesc_cycle_unset allow to remove this property when previously set.
1731 Note that the cycle detection is off by default since it impacts the
1732 performance. Watch the data you feed GRAS with ;)
1734 This property is hereditary. Any element embedded in a structure having it
1735 set have it set for the time of this data exchange.
1737 You should set it both on sender and receiver side. If you don't set it on
1738 sender side, it will enter an endless loop. If you forget on receiver
1739 side, the cycles won't be recreated after communication.
1741 - Header reorganization.
1742 Kill gras_private.h, each submodule must load the headers it needs.
1744 2004-10-04 Martin Quinson
1745 - Interface revolution: do not try to survive to malloc failure.
1747 Now, gras_malloc and friends call gras_abort() on failure.
1748 As a conclusion, malloc_error is not a valid error anymore, and all
1749 functions for which it was the only gras_error_t return value are
1750 changed. They now return void, or there result directly.
1751 This simplify the API a lot.
1753 2004-09-29 Martin Quinson
1754 - Re-enable raw sockets.
1755 Created by gras_socket_{client,server}_ext;
1756 Used with gras_raw_{send,recv}
1759 It should allow to kill the last bits of gras first version soon.
1761 This is not completely satisfactory yet (duplicate code with
1762 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
1765 - Simplify transport plugin (internal) interface by not passing any
1766 argument to _server and _client, but embedding them in the socket
1769 2004-09-28 Martin Quinson
1770 - Finish the port to AIX.
1771 autoconf was my problem (segfault within the malloc replacement
1772 function. No idea why)
1774 2004-09-16 Martin Quinson
1775 - Fix some size_t madness on 64bit architectures.
1777 2004-09-08 Martin Quinson
1778 - Reduce the number of system headers loaded, overload some more system
1779 calls (such as malloc to cast the result of the system one, and work
1781 - Fix and reintroduce the config support
1783 2004-09-07 Martin Quinson
1784 - Source code reorganization to allow Arnaud to surf all over there.
1785 - Allow to document the logging categories.
1786 - Remove all uppercase from logging categories and useless cleanup in names.
1788 2004-08-18 Martin Quinson
1789 Version 0.6.2 (protocol not changed; API changed)
1790 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
1791 gras_error_t), and NULL when not found. Functions expecting a msgtype
1792 as argument (msg_wait; msg_send) deal with NULL argument by providing a
1793 hopefully usefull message.
1794 - Portability to prehistoric sparcs again
1796 2004-08-17 Martin Quinson
1797 Version 0.6.1 (protocol not changed; ABI not changed)
1798 - prealloc some buffers to speed things up
1800 2004-08-11 Martin Quinson
1801 Version 0.6 (protocol not changed; ABI expended)
1802 - The parsing macro can deal with the references, provided that you add
1803 the relevant annotations (using GRAS_ANNOTE(size,field_name))
1805 2004-08-09 Martin Quinson
1806 Version 0.5 (protocol not changed; ABI changed)
1807 - Allow to off turn the cycle detection code in data exchange at
1808 compilation time. It should be at run time, but I'm short of time (and
1809 the config stuff is still broken). That way, we keep dict out of the
1810 critical path, which is good because the performance is poor:
1811 - search not dichotomial yet
1812 - dynar give no way to access their content and memcpy everytime
1813 - In composed data description (struct, ref and so on), stop foolness of
1814 keeping the subtype's ID, but store the type itself. This keeps sets out
1815 of the critical path, which is good since they rely on dynar and
1816 dictionnaries. The only loose of that is that we cannot detect the
1817 redeclaration of a structure/union with another content (but I'm not sure
1818 the code detected well this error before anyway). We still can detect
1819 the redefinition discrepancy for the other types.
1820 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
1821 it breaks the code because of type-punning used all over the place).
1822 This breaks on all non-gcc architectures (for now).
1824 All those changes (plus the buffer of last time) allow me to gain 2 order
1825 of magnitude on cruel tests consisting of 800000 array of integers on two
1826 level of a hierarchical structure (200 secondes -> 4 secondes)
1829 - the selector of reference must now return the type it points to, not
1830 the ID of this type.
1832 2004-08-06 Martin Quinson
1833 Version 0.4 (protocol changed; ABI not changed)
1834 - Allow to pass --gras-log argument to processes in simulation mode. Really.
1835 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
1836 - Implement a buffer transport, and use it by default (it relies on tcp in
1837 real life and on sg in simulation).
1838 That's a bit hackish since I had a new field to the structure to store
1839 its data without interfering with the subtype ones. Inheritance
1840 is tricky in C. And that's a kind of reverse inheritance with one class
1841 derivating two classes. Or maybe a game with java interfaces. Anyway,
1842 that's damn hard in C (at least).
1843 Moreover, I got tired while trying to ensure plugin separation and
1844 genericity in SG mode. MSG wants me to do weird things, so let's go for
1845 cruel hacks (temporarily of course ;).
1846 See comment in transport_private.h:71
1847 - do not include all the _interface headers in private but in the files
1848 which really need them (to cut the compilation time when they are
1851 2004-07-26 Martin Quinson
1852 Version 0.3 (protocol not changed; ABI changed)
1853 - Major overhault of the datadesc interface to simplify it:
1854 - shorted the function names:
1855 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
1856 - add a trivial way to push/pop integers into the cbps without malloc.
1857 This allows to make really generic sub_type description, which simply
1858 pop their size of the stack.
1859 - add a function gras_datadesc_ref_pop_arr() which does what users want
1860 most of the time: Declare a dynamic array (which pops its size of the
1861 stack) and declare a reference to it. Poor name, but anyway.
1862 - kill the post-send callback, add a post-receive one
1864 2004-07-23 Martin Quinson
1865 Version 0.2 (protocol changed; ABI changed)
1866 - add some testing for cpbs in the test cases, and fix some more bugs.
1867 This invalidate again the little64 data file, since I cannot regenerate
1869 - remove an awfull optimization in the logging stuff, allowing me to:
1870 - understand it again
1871 - learn gcc how to check that the argument match the provided format
1872 - fix all errors revealed by gcc after that
1873 - internal keys of dict are not \0 terminated. Deal with it properly in
1874 loggings instead of segfaulting when the user want to see the logs :-/
1876 2004-07-22 Martin Quinson
1877 - Fix some stupid bug preventing cbps (callback postit) from working
1879 2004-07-21 Martin Quinson
1880 - Some documentation cleanups
1881 - remove the useless last argument of msgtype_declare
1882 - rename the Virtu functions to fit into the 'os' namespace
1883 - move headers src/include -> src/include/gras/ and stop fooling with
1884 gras -> . symbolic link
1885 - make distcheck is now successful
1887 2004-07-19 Martin Quinson
1889 - Build shared library also
1890 - Install html doc to the right location
1891 - stop removing maintainer files in make clean
1892 - build tests only on make check
1894 2004-07-13 Martin Quinson
1896 - No major issue in previous version => change versionning schema
1897 - Re-enable little64 convertion test now that Abdou kindly regenerated the
1898 corresponding dataset.
1900 2004-07-11 Martin Quinson
1902 - Get it working with any kind of structure (we can compute the padding
1903 bytes remotely for all the architectures I have access to)
1904 - Implement the structure parsing macro (still not quite robust/complete)
1905 - Improvement to the remote testing toysuite
1907 2004-07-10 Martin Quinson
1908 [autoconf mechanism]
1909 - get ride of a bunch of deprecated macros
1910 - actually run the test for two-compliment, not only compile it :-/
1911 - test whether the structures get packed (and bail out if yes. Damn.
1912 Alignment is a serious matter)
1913 - test whether the structures get compacted (but respecting the alignment
1914 constraints of each types)
1915 - test whether the array fields of structures can straddle alignment boundaries
1917 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
1918 (took me 2 hours to find that bug, looking at the wrong place)
1919 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
1920 before sending/receiving and are used to compute the offsets of fields
1921 - Given that padding size depend even on compiler options, keep track of
1922 alignment and aligned_size only for the current architecture. Not a big
1923 deal since we send structure fields one after the other (seems
1925 - Add the datastructure used for IEEE paper by the PBIO guys to the test
1926 program, let it work on linux/gcc/little32. portability todo.
1928 2004-07-08 Martin Quinson
1929 - import and improve remote compilation support from FAST
1930 - make sure make check works on half a dozen of machines out there
1932 2004-07-07 Martin Quinson
1933 Let's say it's version 0.0.3 ;)
1934 - Implement conversions (yuhu!)
1935 - Let it work on solaris (beside conversion, of course)
1936 - Stupid me, using rand() to generate the conversion datatests in not wise.
1938 2004-07-06 Martin Quinson
1939 - Let make dist work, since I'm gonna need it to compile on remote hosts
1940 - Let Tests/datadesc_usage write the architecture on which the file was
1941 generated as first byte.
1942 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
1943 architecture descriptions.
1944 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
1945 on those architectures.
1946 - Optimization: send/recv array of scalar in one shoot
1948 2004-07-05 Martin Quinson
1949 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
1951 - Plug a whole bunch of memleaks
1952 - each process now have to call gras_{init,exit}. One day, their log
1953 settings will be separated
1954 - Continue the code factorisation between SG, RL and common in Transport.
1956 2004-07-04 Martin Quinson
1958 - Redistribution between SG and RL.
1959 We wanna have to accept in SG, so move accepted related parts of RL in
1960 the common part. (more precisely, the dynar of all known sockets is no
1961 more a static in transport.c, but part of the process_data)
1963 [gras_stub_generator]
1964 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
1966 2004-07-03 Martin Quinson
1967 - Create a new log channel tbx containing dict, set, log, dynar (to shut
1968 them all up in one shot)
1970 - Fix the ugly case of reference to dynamic array.
1971 - New (semi-public) function gras_datadesc_size to allow the messaging
1972 layer to malloc the needed space for the buffer.
1974 - gras_socket_close now expect the socket to close (and not its address to
1975 put NULL in it after it). This is because the socket passed to handlers
1976 is one of their argument (=> not writable).
1978 - propagate the interface cleanup from last week in datadesc, ie remove a
1979 superfluous level of indirection. User pass adress of variable
1980 containing data (both when sending and receiving), and not of a variable
1981 being a pointer to the data. Let's say that I like it better ;)
1982 The price for that is constructs like "int msg=*(int*)payload" in
1983 handlers, but it's a fine price, IMHO.
1985 - Let it work in RL (yuhu)
1987 2004-06-21 Martin Quinson
1989 - porting SG plugin and SG select to new standards (works almost).
1990 - plug memleaks and fix bugs around.
1993 - cleanup the prototype of data recv and force users to specify when they
1994 want to handle references to objects. Test case working even for cycles.
1995 - plug memleaks. Valgrind is perfectly ok with this.
1997 2004-06-12 Martin Quinson
1999 - cleanup the separation between plugin and main code in plugin creation
2001 2004-06-11 Martin Quinson
2003 - Reput hook for raw sockets, needed for BW experiments
2004 - kill a few lines of dead code
2005 [Data description] Interface cleanup
2006 - gras_datadesc_by_name returns the searched type or NULL.
2007 That way, no variable is needed to use a type desc once, which makes
2009 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
2010 two parameters were strings (field name, type name), leading to
2012 [Dicos] Interface cleanup
2013 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
2014 This is consistant with the dynar API.
2016 2004-04-21 Martin Quinson
2018 - Porting to new standards.
2020 - interface cleanup.
2021 There is no bag anymore, no need to take extra provision to mask the
2022 pointers behind "ID".
2023 Better splitup of functions between files create/exchange/convert.
2024 This is still a bit artificial since convert and receive are so
2025 interleaved, but anyway.
2027 - add a queued message list to procdata (the ones not matching criteria
2029 - factorize some more code between SG and RL wrt procdata
2031 - use gras_exit in example to track memleaks
2032 - get rid of gs_example now that GS is properly integrated into gras
2033 - update run_test to integrate the lastest tests (datadesc)
2035 - rename WARNINGn macros to WARNn since it prooved error-prone
2037 2004-04-19 Martin Quinson
2039 - register init/exit functions within gras module mechanism
2040 - send/receive function.
2041 Convertion is not implemented, but short-cutted if not needed.
2042 struct/array elements are sent one by one (instead of block-wise), but
2043 nobody really cares (yet). Get a prototype before optimizing.
2044 - tests (using a file socket) for DD send/receive on:
2045 - base types: int, float
2046 - array: fixed size, string (ie ref to dynamic string)
2047 - structure: homogeneous, heterogeneous
2048 - chained list, graph with cycle
2049 Believe it or not, valgrind is not too unhappy with the results. The
2050 cycle happily segfaults, but the others are ok. And I'm sick of pointers
2054 - Bugfix when using a filename explicitely (instead of '-')
2056 2004-04-09 Martin Quinson
2058 - factorize more code between RL and SG in socket creation
2059 - Complete the implementation and tests of:
2061 o file (only in RL, and mainly for debugging)
2063 I lost 3 days to design a portable address resolver, and then decided
2064 that the prototype mainly have to run on my box.
2065 Addressing portability too early may be like optimizing too early :-/
2067 - use gras_init in the Tests instead of the crappy parse_log_opt
2068 (the latter function is removed)
2069 [Conditional execution]
2070 - New functions: gras_if_RL/gras_if_SG (basic support for this)
2071 [Code reorganisation]
2072 - Get rid of libgrasutils.a since it makes more trouble than it solves.
2073 Build examples against the RL library, since there is no way to disable
2074 its creation for now.
2076 For information, the beginning of coding on GRAS was back in june
2077 2003. I guess that every line has been rewritten at least twice since
