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.
23 * New model for multi-core CPUs. You can now use the core attribute to
24 precise the number of cores of a host. This is a basic model. Every
25 process running on the host receive at most the power provided in
26 the DTD (throughput<=power). Total throughput of process cannot exceed
28 * New peer tag. This peer tag creates a tiny AS comprising a host and a
29 router linked by an up-link and a down-link (possibly asymmetrical).
30 This kind of pattern allows to easily build last-mile model style platforms.
31 Aggregating such patterns in a rule-based AS is thus the technique of
32 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
33 * New model for Vivaldi routing. We transformed the Vivaldi network model
34 into a Vivaldi routing model (based on the rule-based model). This allows to
35 combine Vivaldi based latencies with last-mile platforms.
38 * Added a check for NaN of IEEE754 infinite in the double entries of
40 * Introduce a new context factory "raw", highly inspirated from the
41 ucontext factory, but using manually crafted functions in assembly to
42 do the work in an efficient manner.
43 * Allow to change the used context factory at run time, not only at
44 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
45 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
46 contextes at runtime (only with raw contexts or ucontexts).
47 * Completely rewrote this module to allow parallel execution of user
48 processes. Use --cfg=contexts/nthreads:N to execute user processes
49 with N parallel threads (the default is 1, meaning no parallelism).
50 * Allow to decide dynamically between sequential and parallel modes.
51 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
52 processes in parallel only when their number is greater than or equal to P.
55 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
56 won't output the state of processes when interrupted with Ctrl-C
57 * Add a new function xbt_dynar_to_array that transforms a dynar into a
58 NULL-terminated array. This may solve backward compatibility issues
59 due to the change to return type of SD_Simulate. See also:
60 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
61 * Add new macros with variable number of arguments.
62 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
63 - in xbt/asserts.h: xbt_assert
64 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
65 - in xbt/ex.h: THROWF and RETHROWF.
66 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
68 * Change xbt_die() to accept a format string with arguments, just like printf.
71 * New configuration options
72 Options triva/categorized and triva/uncategorized can be used to generate
73 graph configuration files for Triva visualization tool.
74 * Configuration option tracing/platform is renamed to tracing/categorized
75 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
76 * New TRACE_user_link_variable interface:
77 User provides the name of the link and the tracing variable to attach to it
78 * the declaration of tracing categories must be done after the environment creation
79 * simpler tracing interface, just one way to declare categories
80 TRACE_category or TRACE_category_with_color, it is up to you
81 * links in the trace file are again identified by their names
82 * trace contains the full platform hierarchy exactly as declared using the ASes
83 * Options tracing/msg/[task|process]:1 groups the process by hosts
84 for both cases, tasks and processes must have names that are unique during the simulation
85 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
86 * The experimental option tracing/msg/volume is deprecated
87 its functionality may be reincorporated if needed
90 * Define a SIMGRID_VERSION macro in simgrid_config.h.
91 - We are trying hard to keep the API stable, but it may happen that
92 some things change (we're a research project after all, not a
93 nuclear plant operating system). If such things should happen, you
94 could rely on that macro to adapt.
95 - current value: 30600 for 3.06.00, aka 3.6
96 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
97 a number that can be compared with SIMGRID_VERSION.
99 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
101 SimGrid (3.5) stable; urgency=medium
104 * New feature to any SimGrid-based simulator: Model-Checking
105 Check SIN#1 for more details.
108 * New Model SMPI (three-interval linear regression for correction factors)
109 See RR-7426, available at http://hal.inria.fr/inria-00527150
110 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
111 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
112 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
113 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
114 * See also src/smpi/README
119 - Tracing API changes: TRACE_start and TRACE_end should not be called
120 by user-code. They are automatically called by simulators created
121 with SimDAG, MSG and SMPI if the toolkit is compiled with
122 tracing_enabled=ON. Categories declaration and utilization remain the
123 same for MSG and SimDag.
124 - A function was added to the tracing API to declare categories with
126 - TRACE_category_with_color (char *category, char *color)
127 where color must be in the following format
128 "%f %f %f", red, green, blue
129 and red, green, blue are float values in the interval [0, 1]
130 - User can specify NULL as color parameter, or continue calling
132 On that case, the tracing system will define random colors
133 - The following command-line options are supported:
134 --cfg=tracing/filename:msg.trace
135 --cfg=tracing:1 (activate tracing, needed to use others)
136 --cfg=tracing/platform:1 (categorized resource use)
137 --cfg=tracing/uncategorized:1 (uncategorized resource use)
138 --cfg=tracing/msg/task:1 (task creation)
139 --cfg=tracing/msg/process:1 (process creation, migration)
140 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
141 --cfg=tracing/smpi:1 (SMPI interface tracing)
142 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
143 - examples of examples/msg/tracing updated
145 - DAXLoader and DOTLoader functions can generate tasks with categories
146 - A new function to attribute a category to SD tasks:
147 TRACE_sd_set_task_category (SD_task_t task, char *category)
148 * Tracing the MPI interface implemented by SMPI
149 - Collective operations are traced with states
150 - Point-to-Point operations are traced with states/links
151 - Tracing activated by a parameter "-trace filename" passed
152 to smpirun during execution (considering that simgrid
153 is compiled with tracing enabled)
154 - To run the simulation with gdb, the simulator
155 accepts --cfg=tracing/smpi:1 to trace SMPI
156 - tesh files to check if smpi tracing is ok
157 - See examples/smpi/NAS/DT-trace
158 * GTNetS tracing re-worked
159 - adaptation to the tracing system of GTNets to cope
160 with modifications regarding the fullduplex mode
161 - new tesh files to check if gtnets tracing is ok
164 * Asynchronous communications through the functions:
165 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
166 * New function: MSG_load_platform_script()
167 to make possible using a lua script instead of XML files to set up platforms
168 * New function: MSG_set_function
169 to associate functions to processes, used when bypassing the parser
170 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
172 Platforms: Add some more examples in examples/platforms
173 * Grid'5000: see www.grid5000.fr
174 * *_30000_hosts.xml: various huge files [mainly scalability testing]
177 * Change the XML format. This is a very important modification. SimGrid
178 3.5 introduces a new hierarchical format based on the notion of
179 Autonomous Systems. Compatibility with old format is ensured
180 through the perl script provided in the install bin directory
181 bin/simgrid_update_xml.
182 It is now possible to build platforms with specific routing
183 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
184 connect several platforms together. We will try to provide soon
185 set of realistic platforms exploiting these properties (have a
186 look at examples/platforms/ for the moment).
187 * Take the opportunity of the XML format change to be a good XML citizen:
188 rename link:ctn to link_ctn and similar changes (also dealed with by
190 * Add a new routing scheme (rule-based) using regular expressions. It
191 enables to have an extremely low memory footprint when the
192 underlying routing is simple and can be compactly described. You
193 need to have libpcre4-dev (perl regular expressions) installed if
194 you want to use this routing scheme.
195 * Revive the cluster TAG and allow to easily and efficiently (both in
196 term of memory and speed) connect clusters together. Have a look
197 at teshsuite/simdag/platforms/ to see how this can be done. With
198 this tag, you can create clusters with thousands of tasks at no
199 cost (have a look at examples/platforms/).
200 Note: clusters are implemented as ASes, so there is no need for an
201 enclosing AS tag if you have only one cluster in your platform.
202 * Add new generic functions in the public interface that allows the user
203 to call SURF 'create_resource' methods from your code (same
204 functionality as the XML bypass mechanism but with a much lighter
206 * Add a new model (enabled through command line --cfg=network/model:SMPI)
207 that uses a piecewise linear approximation to produce better
208 results when exchanging small messages.
209 * Add a new parameter to handle correctly full duplex link and account
210 for interferences between uplink and downlink communications
211 (activate with --cfg=fullduplex:1).
214 * Rename the SD_READY (all dependencies are satisfied and task is
215 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
216 dependencies are satisfied) state.
217 This prevents a confusion between the notion of "ready to schedule"
218 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
219 simulated" (SD_RUNNABLE) used by the simulation kernel.
220 * Change the way a task is considered as ready. Instead of removing
221 dependencies when a task is done, a counter is decreased. This way,
222 it is always possible to reach ancestors thanks to the
223 SD_taks_get_parents function (even after the end of the simulation.)
224 * Change the return type of SD_Simulate from (SD_task_t*) into
225 xbt_dynar_t. This function was in handling a dynar internally and
226 converted it into a NULL terminated array for historical reasons.
227 * New function SD_dotload(char*) to load a DAG described in dot
228 format. This loader and the corresponding examples require the
229 installation of the graphviz library.
230 * Fix a bug in the management of tasks of size 0 in the surf network
231 models. This problem was only visible with SIMDAG and you should
232 thus disregard results produced with earlier versions if you
233 relied on this feature (some tasks were blocked because of this).
234 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
235 even though your applications were doing only point-to-point
236 communications and sequential computations. Now you can really use any
237 model you want (of course, if you create real parallel tasks, which are
238 not implemented in most models beside ptaskL07, this will abort).
239 * Add an example that schedules a DAX on an heterogeneous platform
240 using a Min-Min strategy.
241 * New function SD_workstation_get_current_task() that returns the kind
242 of task currently running on a workstation in the sequential access
244 * Raise some warnings when unexecuted tasks remains at the end of the
245 simulation. This is usually caused by cycles in the DAG.
248 * New function: SIMIX_process_set_function() called by MSG_set_function
249 * Change the underlying waiting queue in semaphores so that a process
250 can wait on several of them simultaneously (as in waitany).
251 * Fix the way to handle tokens in semaphores so that all access patterns
252 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
253 * kill the dirty pimple SIMIX_message_sizes_output()
254 Please use (proper) visualization instead
257 * New data container: setset (set of sets of elements)
258 * New module: mmalloc (mapped malloc, allowing to have several
259 independent segments of malloc)
260 * New function: xbt_dict_cursor_set_data()
261 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
262 * New function: xbt_dynar_is_empty()
263 * New function: xbt_fifo_get_last_item()
264 * Fix xbt_dynar_shrink(): use the right element size.
265 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
266 uninitialized areas during expand.
267 * Fix semaphores: previous implementation was severely broken.
268 * Use library init/fini functions for our initialization.
269 - you can use logs and other feature as soon as you want in your
270 code (even before the xbt_init / MSG_init)
271 - xbt_exit is now a no-op and produce a warning when used.
274 * Port GRAS to new SIMIX mechanisms. This allows gras users to
275 benefit from the latest improvement to the simulation kernel.
276 * Kill measurement sockets for now. If you rely on them, sorry. This
277 release is not for you. This feature will be reintroduced in the
278 future, but we cannot delay the release any further.
279 * New function: gras_msgtype_get_name().
280 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
281 * Fix (at last) the pmm example: it should not randomly fail anymore.
283 Build chain: bug fixes and overall polishing
284 * Cmake is now stable enough. Hence, we killed the autotools.
285 * Port to windows ( TM :)
286 * Fix the 'make install' target.
287 No need to use 'make install-simgrid' anymore
288 * Introduce a 'make dist' target compiling a *source* archive
289 'make package' compiles a binary archive
290 * Compile java files only on need
291 * Add --cd and --setenv command line options to tesh
292 * Out of source builds are not fully supported yet, but we are close
293 * Enable supernovae and optimization flags by default for our users
296 * Add layer to set up environment directly from lua, without XML.
297 * The effect of gras_stub_generator can be achieved through
298 lua too (check examples/gras/console/ping_generator.lua)
300 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
302 SimGrid (3.4.1) stable; urgency=low
304 The "Polishing easter eggs is probably a good idea" release.
305 This is a bug fixes release only.
309 * Fix a bug preventing the tasks from begin garbage collected.
312 * Fix a bug occuring when a host involved in a communication fails.
313 This was not detected properly by the other peer involved in the
314 communication. Now, it's reported as a network error.
317 * Warn the user about loop dependencies in data flow of DAX files
318 * Obey the control-flow dependencies of DAX files
321 * Add option "enable_smpi" allowing to not compile SMPI.
322 Probably useful for the (Mac) users experiencing a build error here
323 * Improve the detection of lua5.1 and ruby1.8
325 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
327 SimGrid (3.4) stable; urgency=low
329 The "Easter in Cargese" release. Also known as (major changes):
331 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
332 ~> bindings were greatly improved
333 ~> new tracing infrastructure for better visualization introduced
335 * the "Welcome to configury modernity" release.
336 ~> we switched from autotools to cmake, and improved our cdash
339 A more detailled list of changes follow (full detail in svn log).
341 Java Bindings: Various Cleanups
342 * (install java-gcj-compat-dev on debian-like to use them)
343 * Remove put/get: no need to export deprecated interface in Java
344 Use send/receive instead.
345 * Cleanup the examples and add a README per directory
346 * Remove example autoDestination (that's the only way to go now)
347 * Remove example explicitDestination (was a plain copy of basic)
348 * Make JniException a runtime exception, so that there is no need to
349 declare the fact that you may encounter such a beast. I guess that
350 nobody will ever want to survive such error.
351 * Create specific errors for each MSG case of failure:
352 host failure, transfer failure, timeout, task cancelled
353 * Cleanup the exceptions that may get thrown by each function
354 * Other internal cleanups in Java bindings. Performance still bad :/
355 Ruby and Lua Bindings: create them
356 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
357 * That's new and great, you should try them out.
358 Same functionalities than Java bindings, only even less polished
360 * Kill the useless "rate" argument of SD_task_get_execution_time()
361 Everyone used to provide -1 as a value, it was not used, and the
362 semantic of a possible use wasn't even clear.
363 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
364 either as comm costs or compute costs to mean that there is no
365 such thing for that specific task.
366 * Add a SD_task_set_name() function
367 * Fix SD_task_unschedule() on typed tasks
368 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
369 * In DAX loader, accept useless 'level' attributes to <job> since
370 LIGO DAGs have them (seem to be to ease graphical representation).
372 * Add an example masterslave_mailbox.c using send/receive and not
373 the deprecated put/get interface.
374 * Kill the MSG_paje_output() function. It's a noop since 2 years.
375 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
377 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
378 (declare MSG_USE_DEPRECATED to still have the old name)
379 * Add a MSG_task_set_data() function
380 * About trace replay (see examples/msg/actions):
382 - Allow to work with splitted trace files for each process
383 Give the specific trace file as argument of each process,
384 and call MSG_action_trace_run(NULL)
385 You can still have one merged file for all processes.
386 - Fix implementation of collective operations
387 * Allow task_execute() on 0-sized tasks (closes #10063)
389 * This is the first release of SimGrid where SMPI is not considered
390 beta anymore (even if some corners should still be improved)
391 * Port over the new SIMIX_network submodule (internal refactoring)
392 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
393 * Implement more missing elements of the standard:
395 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
397 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
398 MPI_Scan() MPI_Get_processor_name()
399 - Added implementation of missing case for Alltoall (warning: it's
400 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
401 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
402 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
403 SMPI_MPI_Allgatherv()
405 - MPI_Waitsome() was broken
406 - Allow relative includes in smpicc
407 - Command line cfg argument 'reference_speed' was ignored...
408 - Some functions did not properly lead to auto-benching of user code
409 - smpicc passes -O2 by default (just like openmpi one)
411 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
412 * Bug fixes about timeouts during communications
413 * add SIMIX_message_sizes_output() as a pimple to write to file the
414 amount of messages per size. Use gnuplot to get histogram.
415 Pimple because that's the only user-visible function of simix,
416 defined directly in xbt.h (irk, sorry)
418 - Add a SIMIX_sem_get_capacity() function
419 - Fix interactions with processe resume/suspende
420 - release_forever() was stupidly broken
421 - Fix SIMIX_display_process_status() for processes in a semaphore
422 - Make SIMIX_sem_block_onto() user-visible
423 * Refactoring context stuff:
424 - Use pseudo-OOP for better modularity
425 - reimplement SIMIX_process_kill() without process_schedule() so
426 that the latter can take as invariant that it is called from
428 - Merge context_start into context_new for sake of simplicity
430 * Add a Vivaldi network model, coded live during SUD'10 ;)
431 * Rename configuration variables to start a hierarchy:
432 o cpu_model -> cpu/model
433 o network_model -> network/model
434 o workstation_model -> workstation/model
435 * New configuration variables:
436 o network/bandwidth_factor: correction to bandwith
437 o network/latency_factor: correction to latency
438 o netwotk/weight_S: correction to the weight of competing streams
439 * Add a long description to the models, that users can see with such
440 argument on the command line: --cfg=cpu/model:help
441 * --help-models display the long description of all known models
443 * config: add the ability to set a default value after registration
444 Does not override any previously set value (e.g. from cmd line)
445 * dict: allow to have integer key and data.
446 When so, you need to use the following functions
447 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
448 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
449 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
450 In contrary to regular dicts, the key is not malloced before copy.
451 Mixing scalar and regular elements in the same dict is not tested
453 * Allow to use xbt_dynar_shrink() to expend the dynar instead
454 Tracing for Visualization:
455 * SimGrid is now instrumented in order to generate a trace file for
456 visualization analysis: to use it, need to compile SimGrid with the
457 "tracing" option enabled, and instrument the program using SimGrid with
458 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
459 (among other functions).
460 * The instrumentation only traces the platform utilization for now
461 * Documentation to use the tracing functions and how to analyze the
462 traces with the Triva tool is written.
463 * More information about: SimGrid FAQ (in the section Tracing Simulations
466 * We moved to cmake as default build system. Autotools support will
467 be dropped soon. Check the FAQ for more info about how to use it.
468 * Greatly improved our cdash/ctest interactions
469 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
470 * Added memory checking tests with valgrind; lot of memleak fixing.
471 This may be the first release of simgrid with so few memory issues
472 * Added code coverage tests.
473 Our coverage is still improvable, but at least we see it on cdash.
475 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
477 SimGrid (3.3.4) stable; urgency=low
479 The "Desktop Grid needs love too" release (also called Xmas release).
482 * Major speedup in the maxmin system solving by using lazy evaluation
483 Instead of solving completely the maxmin system at each iteration,
484 only invalidate (and recompute) the modified parts.
485 This new feature is enabled in default models but you can try to
486 turn it on with "--cfg:maxmin-selective-update=1" for other models.
487 * Cas01 IMproved as default CPU model
488 This CPU model is the same Cas01 model, but it uses the
489 maxmin-selective-update flag and a heap structure to manage
490 actions on SURF kernel.
491 It reduces the complexity to find the next action to finish and,
492 consequently, it's faster than the old Cas01.
493 This is the new default CPU model (Cas01).
494 * Rename the old Cas01 model to Cas01_fullupdate
495 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
496 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
497 * CpuTI (CPU Trace Integration)
498 A new CPU model whose objective is simulate faster when using
499 availability trace files.
500 Instead of using a full featured, over engineered maxmin system for
501 CPU modeling, this model does the pre-integration of traces files
502 to calculate the amount of CPU power available, and so, executes
503 faster than the old CPU models.
504 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
505 * Use LV08 as default network model since it gives better accuracy
506 for small messages and shouldn't change things for big ones.
507 Use --cfg=network_model:CM02 to get the previous behavior.
510 ******************************************
511 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
512 ******************************************
513 * The new CPU model may changes simulations!
514 The point is that events occurring at the exact same timestamp
515 are not scheduled in the same order with the old and new
516 version. This may be enough to completely change the execution
517 of simulations in some cases.
518 * The new network model will change simulations!
519 This new model is more realistic than the previous one, so you
520 should consider redoing your old experiments with this model.
521 Sorry for the inconvenience.
524 * Introduce the supernovae compilation mode
525 When compiled that way, the whole SimGrid (or almost) is put in a
526 single compilation unit and compiled in one shoot.
527 This is to help gcc which has difficulties to inline stuff from one
529 The speedup seem to be above 15%, althrough more tests are needed on
530 amd64 to confirm that gain.
533 * Port of MSG's mailbox on top of SIMIX network
534 The put/get mechanism was greatly simplified on the way.
537 * New SIMIX network module. Provides:
538 - Mailbox: rendez-vous mecanism to find with who you want to speak
539 - Synchronous send/recv: easier and hopefully faster since the
540 logic is handled in the maestro process directly now
541 - Asynchronous send/recv: you dreamt of it? It's here now
542 Too bad that nobody cared enough to propagate the change to MSG.
543 * Add semaphores as SIMIX synchronization mechanism.
546 * new function SD_daxload(char*) to load a DAX file
547 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
548 * Introduce typed tasks. Specify its kind and cost at creation.
549 At scheduling, just give where it should be placed, and the cost
550 for each involved resource is automatically computed.
551 Existing constructors so far (more to come of course):
552 - SD_task_create_comm_e2e() for end-to-end communication
553 - SD_task_create_comp_seq() for sequential computation
554 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
555 * new function SD_task_dump() for debuging display
556 * new function SD_task_dotty(task,FILE*) writing to file the info
557 about the task in dotty format
558 * SD_task_dependency_exists() can now cope with having one of its
559 arguments NULL. If so, it tests whether the other argument has any
561 * Add getters on list of preceding/following tasks:
562 SD_task_get_parents(task) and SD_task_get_children(task)
563 * Add getters on amount of workstations and list:
564 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
565 * Add getter on task kind: SD_task_get_kind(task)
566 * Update the start_time and finish_time of tasks on completion/failure
567 * Bugfix: Remove task from state swags when destroyed
570 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
573 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
574 dynar with one separate thread per value of the dynar.
575 * Change the prototype of xbt_thread_create(), sorry.
576 Added a boolean parameter indicating whether we want to join this
577 thread (used in SG only for now)
578 * Implement xbt_thread_join and xbt_thread_yield in SG also.
581 * GTNetS wrappers should now be usable again (and betterly tested too)
582 * Fix a major regression from 3.2 where the timeout provided to
583 MSG_task_put_with_timeout() was used as absolute time before which
584 the comm should be done.
585 * Start to fix the <cluster> tag.
586 - Internal links should be good now (beside of the loopback, which
587 use the private link instead)
588 - paths to the external world is still rather broken
589 - the <route:multi> tag is just broken. Actually that's brain-dead.
590 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
591 to make it less stupid
592 ** Check your platform with teshsuite/simdag/platforms/flatifier **
593 * Fix a source-level compatibility glitch from 3.2: after defining
594 MSG_USE_DEPRECATED, you can use the old name
595 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
596 * Allow to compile from the SVN with automake 1.11
597 * Fix some problems when using the "start_time" tag in deployment XMLs.
598 * Fix #8569: XBT/synchro.h has redundant declarations
599 * Fix #8563: MSG return values and exceptions
600 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
601 * Integrate patch #8636: Obey DESTDIR when installing documentation.
602 Thanks to Robson Peixoto.
603 * Fix a vicious bug in dictionaries inducing that some elements were
604 not freed on xbt_dict_free()
606 Portability report of this version:
607 * Main portability targets:
608 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
610 - mac leopard on i386
611 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
612 but nothing critical.
613 * Other platforms: windows, AIX and others were not tested for this release
615 Timing report of this version:
616 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
617 scenario parameters). From 8h to a few seconds in desktop grid settings.
618 * Supernovae brings about 25% speedup on i386.
620 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
622 SimGrid (3.3.3) stable; urgency=low
624 The "Need for Speed" release.
626 The timings done to validate the 3.3.2 were faulty.
627 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
629 The problem was a conversion from a manually handled vector to
630 xbt_dynar_t on the critical path.
631 xbt_dynar_foreach calls functions, inducing stack management crap.
633 We inlined these functions and xbt_dynar_foreach is now breath taking.
634 We also inlined xbt_swag_belong on the way.
636 Here are some approximate speedup measurements (on master/slaves
637 simulations lasting between 10s and 20s each):
638 3.3.1 -> 3.3.2: about same performance
639 3.3.2 -> 3.3.3: 40% speedup
640 3.3.1 -> 3.3.3: 40% speedup
641 3.3.1 with inline patch -> 3.3.3: 30% speedup
643 Our reading is that the refactoring which occurred in 3.3.2 made us
644 suffer much more from the xbt_dynar_foreach low performance, but
645 once we solved this, this refactoring proved to be very performance
646 effective. From the 40% speedup, somehow, 10% are due to the
647 inlining and 30% to the refactoring.
649 That's a pitty that gcc cannot inline functions placed in other files
650 alone. We have to choose between:
651 - break the encapsulation (by putting private data structures and
652 accessors in headers files to help gcc)
653 - live with low performance
654 - switch to a decent compiler such as icc (not quite possible).
656 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
658 SimGrid (3.3.2) stable; urgency=low
660 The "Simplicity does not preceed complexity, but follows it" release.
662 The main contributors of this release were (lexical order):
663 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
666 * Extract the routing logic into its own object.
667 (was dupplicated in network.c and workstation_LV07.c;
668 Allows to implement other ways of storing that info)
669 => kill now useless network_card concept
670 - Use dynar to represent routes (instead of void** + int*)
671 - kill link_set (use surf_network_model->resource_set instead)
672 - Add a command-line option to choose the routing schema to use
673 - Add three new models:
674 * Floyd (shortest path computed at initialization)
675 * Dijikstra (shortest path recomputed all the time)
676 * Cached Dijikstra (shortest path computed on need)
677 All these models where contributed by Silas De Munck, and are
678 described in his ICCS09 paper.
680 * Simplify model declaration
681 (less redirections, less function to write when defining a model)
682 - Factorize stuff between models:
685 surf_model_resource_set(model)
686 surf_model_resource_by_name(model, name)
687 - Unify the types of models in s_surf_model_t (using an union)
688 - Embeed fields of common_public directly into s_surf_model_t
689 - Rename model methods:
690 action_free ~> action_unref
691 action_change_state ~> action_state_set
692 action_get_state ~> action_state_get
693 - Change model methods into functions :
694 (model)->common_public->action_use ~> surf_action_ref
696 * Implement a generic resource; use it as ancestor to specific ones
697 (allows to kill duplicated code in models)
698 Drawback: timer command don't need no name nor properties;
699 workstation_CLM03 don't need no properties
700 (but I guess we can live with those few bytes wasted)
702 * Improve the action object model
703 - implement a constructor avoiding dupplicated code about field
704 initialization in generic_action part.
706 * Kill the SDP model: it has an external dependency, is deprecated
707 in flavor of modern lmm models, and didn't compile since a while
710 * Relocation of the context module from XBT to SIMIX.
711 (the context were decoupled from the simix processes, duplicating a lot of code)
712 => a lot of code was factorized
713 - less overhead is introduced during scheduling
714 - simpler API for the context factory
715 - the logic for process creation,destruction and manipulation was simplified
716 * Simplification of the s_smx_process_t data structure.
717 => accesing the simix level data associated to a process is faster now,
718 and the code is a lot more readable.
721 * Implement some more MPI primitives:
722 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
723 -implementation: Bcast: flat or 2-ary tree (default),
726 Allreduce: Reduce then Bcast
727 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
728 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
729 Alltoallv: flat tree, like ompi
731 * Add support for optimized collectives (Bcast is now binomial by default)
732 * Port smpirun and smpicc to OS X
735 * Kill SD_link_get_properties: hard to maintain and makes very little sense
736 Shout out if you used it.
739 * Display the list of still queued messages in SG mode when existing
743 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
744 * Add xbt_graph_node_get_outedges() [Silas De Munck]
745 * Add xbt_str_from_file(FILE*)
746 * Add xbt_dict_get_key achieving a linear reverse search
747 * Remove the context module
749 Portability report of this version:
750 * Main portability targets:
751 - Linux(debian)/x86/context
752 - Linux(debian)/x86/pthreads
753 - Linux(debian)/amd64/context
754 - Linux(debian)/amd64/pthreads
755 On these, we still have the eratic breakages of gras/pmm and
756 amok/saturate_sg reported in previous version. We still think
757 that the tests are the cause of the fault, not the tested code.
759 - Mac OSX Leopard/x86/context
760 Still false negative in tesh autotesting.
761 Smpi still fails, but this time because readlink does not accept -f
762 Everything seems to work properly beside of that.
765 - AIX version 5.3 (only tested contexts this time)
766 Smpi still fails there because mktemp is not installed.
767 Everything seems to work properly beside of that.
769 I managed to compile it for the first time, but several breakages.
770 Won't delay the release for this exotic platform.
772 * Windows: it's still lagging behind. If you want to help, please
775 Timing report of this version:
776 This version seem to be more than 5% faster than 3.3.1 (on linux
777 64bits with contextes). The gain is less than expected, we are
778 investigating this for next release.
780 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
782 SimGrid (3.3.1) stable; urgency=low
785 * Implement a --cfg-help to show existing configuration variables
786 * Build chain do not require doxygen in maintainer mode
789 * fix a bug on struct sizeof computation, which prevented the
790 exchange of arrays of structs in some conditions
791 - added a regression test about this in datadesc_usage
792 * Allow the exchange of 0-long dynamic vectors.
793 - for that, use -1 as indicator of dynamic size instead of 0
794 - This implied to change any size from unsigned long to long,
795 reducing a bit communication abilities, but I guess that with
796 64bits being quite common, this is more than enough.
797 - This also induce a protocol change, thus bumping network protocol
798 version from 0 to 1 (if we have external users, we have to get
799 clean on that point too ;)
800 - added two regression tests about this in datadesc_usage
801 * Be more verbose when propagating local exceptions
802 This helps debugging.
803 * Display the status of simulated processes when receiving SIGINT in
807 * Allow to control the simulation from a trace file.
808 New functions MSG_action_register() and MSG_action_trace_run()
809 The first one allows to associate a function execution to each
810 kind of action while the second one parses a trace file and
811 triggers the corresponding actions within the system.
812 For now, only a toy example is provided in examples/msg/actions
813 * Add an exemple of process migration in examples/msg/migration
814 * Fix a bug in task exchange which broke MSG_task_get_sender()
815 Add a teshsuite regression test for that.
816 [Bug: if MSG_task_get_sender() is called after sender exit,
818 * Fix a bug which prevented suspend/resume to work properly
819 * Display the status of simulated processes when receiving SIGINT
820 This fixes a regression of v3.3. due to the introduction of SIMIX
821 * Bug fixing in failure management:
822 - trace could not start by a failure at time 0
823 - failure during communications were not working
826 * Add SIMIX_process_set_name() to change the name of the current
827 process in the log messages.
828 * Store smx_hosts in a dict since we only retrieve them by name
829 * Move the configuration infrastructure to surf
832 * Move the configuration infrastructure to surf
835 * Massive internal cleanups:
836 - Store internal structures on processes instead of hosts (allows
837 to have more than one process per host, in addition of being more
839 - Cleanup the initialization/finalization process
840 - Kill a whole bunch of unneeded synchronization:
841 processes run in exclusive manner within the simulator
842 - Move queues from global tables to process data fields
844 - now accept -platform and -hostfile arguments
845 - Pass the right rank value to processes according to the hostfile
846 * Compile the examples by default, and use them as regression tests
847 * Implement MPI_Wtime()
848 * Change the reference speed to a command line option
851 * TCP_gamma can now be specified as command line option using
852 --cfg=TCP_gamma:10000000.0
853 * Change the --surf-path cmd line option into --cfg=path:
856 * Also include strbuff from xbt.h public header
857 * xbt_ex_display(): do not free the exception after displaying
858 This allows to do more with the given exception afterward.
859 Users should call xbt_ex_free() themselves.
863 Portability report of this version:
864 * Main portability targets:
865 - Linux(debian)/x86/context
866 - Linux(debian)/x86/pthreads
867 - Linux(debian)/amd64/context
868 - Linux(debian)/amd64/pthreads
869 These targets fail about 1/10 of times on gras/pmm, but we believe
870 that this is because of the test, not because of simgrid.
871 amok/saturate_sg fails even more rarely, and the test may not be
874 - Mac OSX Leopard/x86/context
875 The test suite still spits tons of errors because some obscure
876 force prevents us from removing the temporary directories
877 arguing that they still contain some metadata I've never heard of.
878 Smpi fails because seq is not installed.
879 Everything seems to work properly beside of that.
882 - AIX version 5.3 (both contexts and pthread)
883 Smpi still fails there because mktemp is not installed.
884 XML inclusions seems rosty on AIX.
886 * Windows: it's still lagging behind. If you want to help, please
889 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
891 SimGrid (3.3) stable; urgency=high
895 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
898 * Introduce the SIMIX module: factorize code between MSG and GRAS.
901 Until now, GRAS were using MSG as an interface to SURF. It was
902 quite difficult because both interface have several differences
903 (MSG channels vs GRAS sockets were the most notable point).
905 This also opens the gate to SMPI (which should occur soon) and speed
906 up simulations by to 40% (even if it were not the main goal).
908 **************************************
909 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
910 **************************************
911 The point is that events occuring at the exact same timestamp are
912 not scheduled in the same order with the old and new version. This
913 may be enough to completely change the execution of simulations in
914 some cases. Sorry for the inconvenience.
916 * Cleanup and upgrade the XML format to push further scalability
917 issues (check http://hal.inria.fr/inria-00256883/ for more info)
919 * Improve the testing infrastructure with tesh. Now a very large part of
920 the code is tested not only by being run but also by checking that the
921 output match an expected output [Mt].
923 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
924 is really less memory-demanding, which should allow you to use
925 larger files in SimGrid [AL].
927 * Inform valgrind about our contextes, so that it becomes usable
928 with the default (and more effecient) version of SimGrid
929 [contributed by Sékou Diakite, many thanks]
932 * Introduce a listener thread in charge of receiving incomming
933 messages from the network. It allows to overlap communication and
934 computation but most notably, it removes some stupid deadlocks due
935 to the fact that so far, a process could not send and receive at
936 the same time. This made most non trivial communication schema
938 * Convert the PIDs from long int to int to match the MSG ones (and
940 * New function: gras_agent_spawn() to launch a new process on
941 current host. Only working in simulation for now. [Mt]
942 * New function: gras_os_hostport() returning a constant form (ie,
943 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
946 * Make the backtrace of exceptions more human readable [Mt]
947 * New module: xbt/str [Mt]
948 a ton of string utility functions (split, join, printf to a newly
949 allocated buffer, trim, etc)
950 * New module: xbt/hash [Mt]
951 SHA1 hashing algorithm (more to come if needed)
952 * New module: xbt/synchro [Mt]
953 synchronization tools (mutex and conditions) working the same way
954 in simulation and in real life (mainly useful for GRAS, but not
956 * New module: xbt/queue [Mt]
957 classical producer/consumer synchronization scheme
958 * xbt_dynar_new_sync() creates a synchronized dynar. All access
959 (using the classical functions will get serialized) [Mt]
960 * Make dictionary internal table dynamic. No need to specify its size
961 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
963 * Make sure the log channels are organized as a tree under windows
964 (because of ANSI C compatibility issue, any channel were child of
968 * Cleaned many thing in surf and fixed a few bugs [AL].
969 * Add a nice command line configuration mechanism to compose models [AL].
970 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
971 the previous one (KCCFLN05). It relies on something that looks like
972 a max-min sharing mechanism but cannot be written as such. A new solver
973 was thus designed [AL].
974 * Add a new solver to lmm. Based on Lagrange optimization and
975 gradient-based descent, it enables to efficiently maximise systems s.a
977 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
979 This solver enables to propose two new network models for TCP Reno and
980 TCP Vegas based on Low's work. These models still need to be fully
981 tested though [Pedro Velho].
984 * Bug fix in SD_simulate. Now the time bound given as argument is
986 * Use the new parallel task model (ptask_L07) as default.
987 * Use the SURF command line configuration mechanism.
988 * 0-size tasks (for synchronization) should now work.
990 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
992 SimGrid (3.2) stable; urgency=high
996 We still experience issues on this platform, but we believe that at
999 GRAS API BREAKAGE (for simplification purpose, sorry):
1000 * the gras_msgtype_by_name is not used anymore. Instead of
1001 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
1002 you can write (and must)
1003 gras_msg_send(toserver, "request", &request);
1004 - If you still want to pass a gras_msgtype_t to the function (to cache
1005 the type and avoid the lookup time), use the gras_msg_send_() variant.
1006 - Impacted functions:
1007 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
1008 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
1009 * The callbacks are now expected to return 0 when everything went well
1010 (just like the main() function)
1012 GRAS new features and improvements:
1013 * New module mecanism where user code can use per process globals [Mt]
1014 This is similar to gras_userdata_*() functions, but for libraries. It
1015 factorize some code developped over and over in the examples and AMOK.
1016 It has still to be documented and used (only amok/peermanagement is
1018 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
1019 loss when they were small enough to fit into the buffer and sent quickly
1020 enough so that they can all get received in one shoot.
1021 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
1022 if not found. Use the *_or_null() variant for the old semantic.
1023 * In gras_msg_handle, do not discard messages without callback.
1024 They are probably messages to be explicitly awaited later (ie, proofs of
1025 mis-synchronization in userland since they are sent before being awaited)
1026 No big deal usually.
1027 * gras_socket_meas_send/recv: semantic changed!
1028 The numerical arguments used to be (1) the total amount of data to send
1029 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
1030 messages. This was need for the fool willing to send more than MAXINT
1031 bytes on quite fat pipes.
1034 * Do really rename the hostmanagement module to peermanagement. [Mt]
1035 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
1036 but this is rather new and this was documented in the module
1037 documentation (poor excuses, I admit)
1038 * Bandwidth measurement semantic changed! This follows the changes to
1039 gras_socket_meas_send/recv explained above.
1042 * A sequential mode has been added to the workstations. When a workstation
1043 is in sequential mode, it can execute only one task, and the other tasks
1044 are waiting in a FIFO. [Christophe Thiery]
1047 * The KCCFLN05 workstation model now handles parallel tasks. It is the
1048 model for SIMDAG. [Christophe Thiery]
1049 * Bug fix in the maxmin solver: Some values were close to 0 instead of
1050 equal to 0, which caused some bad behaviors in
1051 saturated_constraint_set_update. I now use a threshold mechanism like in
1055 * When running manually src/testall, you select specific units [Mt]
1056 testall is the result of our cunit mecanism, and should replace all
1057 the scripty thingy around since bash don't run easily on billware.
1059 * A mallocator system has been added. [Christophe Thiery]
1060 Mallocators allow you to recycle your unused objects instead of freeing them
1061 and allocating new ones.
1063 Documentation update:
1064 * FAQ reworking + New FAQs:
1065 - "Valgrind spits tons of errors!" [Mt]
1066 - "How to repport bugs" [Mt]
1067 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
1068 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
1069 - Communication time measurement within MSG [AL]
1070 - I experience weird communication times when I change the latency [AL]
1071 * GRAS tutorial [Mt]
1073 - an introduction to the framework and to the used communication model
1074 - an initiatic tour introducing the most proheminent features:
1076 . Lesson 0: Installing GRAS
1077 . Lesson 1: Setting up your own project
1078 o Part 2: Message passing
1079 . Lesson 2: Exchanging simple messages
1080 . Lesson 3: Passing arguments to the processes (in SG)
1081 . Lesson 4: Attaching callbacks to messages
1082 . Lesson 5: Using globals in processes
1083 . Lesson 6: Logging informations properly
1084 . Lesson 7: Using internal timers
1085 . Lesson 8: Handling errors through exceptions
1086 . Lesson 9: Exchanging simple data
1087 . Lesson 10: Remote Procedure Calling (RPC)
1088 . Lesson 11: Explicitely waiting for messages
1089 . Recapping of message passing features in GRAS
1090 - A HOWTO section containing:
1091 o HOWTO design a GRAS application
1092 More are due, of course. They will come latter. In the meanwhile, you can
1093 check the examples which are still here.
1095 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
1097 SimGrid (3.1) stable; urgency=high
1101 There was a stack corruption somewhere, visible only when optimizing
1102 with these versions. [Vince]
1105 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
1106 module that enabled to play with Directed Acyclic Graphs. It is built
1107 directly on top of SURF and provides an API rather close to the old
1108 SG. Some old codes using SG are currently under rewrite to check that
1109 all needful functions are provided. [Christophe Thiery]
1112 * Complete rewrite of the KCCFLN05 workstation model. It is now an
1113 extension of the classical CLM03 model that gracefully handles
1114 failures. This is now the default model for MSG and GRAS. It doesn't
1115 handle parallel tasks yet though. [AL]
1116 * Bug fix: Weights were not correctly set in the network part.
1117 WARNING: This may have resulted in incorrect results with simulations
1118 where there are more than one flow on a given link. [AL]
1121 * After a (long ?) discussion on simgrid-devel, we have decided that the
1122 convention we had on units was stupid. That is why it has been decided
1123 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
1124 WARNING : This means that all previous platform files will not work as
1125 such with this version! A warning is issued to ask users to update
1127 A conversion script can be found in the contrib module of the CVS, under
1128 the name contrib/platform_generation/surfxml_update.pl [MQ]
1131 * Bug fix: Processes were started in reverse order, wrt deployment file.
1132 WARNING: if your code relies on this bug, please fix it. [AL]
1133 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
1134 being executed on two different locations. [AL]
1135 * Bug fix: Failures are now better supported thanks to Derrick's tests
1136 (there was many failure situations I hadn't thought of and that weren't
1137 correctly handled). [AL]
1138 * New function: MSG_host_is_avail indicates you whether a given m_host_t
1142 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
1143 Exception occurring on server-side are propagated back to client (!).
1145 API CHANGE: the callback changed their prototype. Change:
1146 int my_handler(gras_socket_t expeditor, void *payload_data) {
1148 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
1149 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
1151 * New! function: gras_msg_handleall to deal with all messages arriving
1152 within a given period.
1153 * New! function: gras_socket_server_range to get a server socket in a
1154 range of port numbers (ease to avoid port number conflicts) [MQ]
1155 * New! gras processes display their backtrace when they get a SIGUSR1
1156 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
1157 Sweet to debug RL processes [MQ]
1161 - Do not force experiment sizes to be expressed in kb, or it becomes
1162 impossible to measure the latency this way (needs one byte-long tests)
1163 WARNING: this changes the amok_bw_* function semantic. [MQ]
1164 - Implements the link saturation stuff. [MQ]
1165 * Peer management module:
1166 New! module factorizing code that we wrote over and over [MQ].
1169 * New module: cunit (my jUnit implementation in ansi C) [MQ]
1170 - Test units are placed directly into the library code, they get extracted
1171 automatically and placed into the src/testall binary.
1172 - Convert most of the XBT tests to this system.
1173 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
1174 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
1175 live in the same C code. This required to change a little bit the API
1176 of surfxml parsing but shouldn't be an issue for end-users. [AL]
1177 * New module: sparse graph structure with basic algorithms (this is work
1178 in progress and the API is not considered to be frozen yet). [AL]
1179 * Display more information on backtraces: source line & function names are
1180 now displayed just like valgrind does (rely on addr2line tool) [MQ]
1181 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
1182 * Reworked a little bit some #include statements to load only required
1183 headers. Some user code that relied on SimGrid to include stdlib or
1184 stdio may need to include it by themselves. [AL]
1185 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
1187 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
1188 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
1189 but I guess that almost nobody used those parts. [MQ]
1191 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
1193 SimGrid (3.0.1) stable; urgency=low
1196 * Unfortunately, I had missed 5 misnamed functions:
1197 xbt_fifo_item_t xbt_fifo_newitem(void);
1198 void xbt_fifo_freeitem(xbt_fifo_item_t);
1199 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
1200 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
1201 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
1202 They're now deprecated. Please use their new versions:
1203 xbt_fifo_item_t xbt_fifo_new_item(void);
1204 void xbt_fifo_free_item(xbt_fifo_item_t);
1205 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
1206 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
1207 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
1209 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
1210 * Documentation: xbt_log module unmercifully reworked [MQ]
1211 * Bugfix: there was a problem with the ending of contexts with
1212 the pthread backend. It caused some weird deadlock or behavior
1213 depending on the pthread implementation. [AL]
1214 * Bugfix: get the exceptions raised in the simulator repport where
1215 and why they come from when they are not catched in time [AL, MQ]
1218 * Bugfix: Do repport the error when two non-connected hosts try to
1219 exchange data (Thanks to Flavien for stumbling into this one) [AL]
1222 * Add additionnal checkings on communications. Assert that two
1223 communicating hosts are connected by a set of links... [AL]
1226 * Add additionnal checkings on channel values in communication [AL]
1227 * New: MSG_task_get_source to see on which host a task was generated [HC]
1228 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
1229 the number of tasks waiting to be received on channel and sent
1231 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
1232 waits for the first task coming from a given host.. [AL]
1234 GRAS new functionnalities: [MQ]
1235 * Enhance the parsing macro to allow the size of multidimentional objects
1236 to be given thru annotations.
1237 * New example (and documentation): Matrix Multiplication a la RPC
1238 (as when I was young!) and fix a bunch of bugs found on the way.
1240 GRAS performance improvements: [MQ]
1242 * Reduce the amount of cbps creation/destruction by making it static to
1243 datadesc_send/recv() and using a (newly created) cbps_reset (based on
1246 * Change libdata to a set so that we can search for stuff by ID (and thus
1247 reduce the insane amount of dict lookups)
1250 * Actually implement gras_datadesc_copy() so that we don't have to mimick
1251 RL communication on top of SG since it's so uneffective.
1252 It may also be used for inter-thread communication in RL, one day.
1253 * Use gras_datadesc_copy() to exchange messages on top of SG
1255 - improve message exchange performance on top of SG
1256 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
1257 * Don't exchange on the network the size of the used part of buffer,
1258 instead, specify the possible buffer size to read().
1260 - reduces the amount of read/write calls (one pair per exchange)
1261 - reduces the amount of exchanged data (the size)
1262 - allows to retrieve all arrived data on receiver side, if we don't need
1263 it right now (subsequent read will peek the buffer)
1264 - allows the receiver to proceed with the begining of the stream before
1265 everything is arrived
1266 - make it possible to build an iov transport (using readv/writev)
1268 - take care of the data with non-stable storage (like stacked data),
1270 * If possible, TCP send uses vector I/O (when writev() is here)
1271 - Don't use it for receive since we send data sizes and data on the
1272 same stream, so we wouldn't be able to chain large amount of chunks
1273 before having to flush the stuff to read the size.
1274 * Rework the transport plugin mecanism to simplify it and reduce the
1275 amount of pointer dereferencement when searching for the right function
1278 * I guess that now, we do almost as few system calls as possible while
1279 doing as few data copy as possible.
1281 To improve it further, we could try to send all the sizes first and then
1282 all the data (to use iov on receiving size), but it's only a partial
1283 solution: when you have 2 dimensional data, the sizes of the second
1284 dimension is data of the first dimension, so you need 3 streams.
1286 I'm not sure the potential performance gains justify the coding burden.
1288 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
1290 SimGrid (3.00) stable; urgency=high
1293 * New! Give the possibility to hijack the surf parser and thus bypass
1294 MSG_create_environment and MSG_launch_application. Have a look at
1295 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
1297 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
1299 SimGrid (2.96) unstable; urgency=low
1304 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
1305 This deprecates the xbt_error_t mecanisms.
1306 It modifies (simplifies) all XBT and GRAS API.
1307 MSG API keeps unchanged (exceptions raised by XBT are catched from
1308 within MSG and masked with existing error handling facilities)
1311 * New! Add a FATPIPE model. [AL]
1312 * New! Add a parallel task model. [AL]
1313 * New! Add automatically a loopback interface (in the default
1314 network model) if none was precised.
1317 * Bugfix: MSG_process_resume now works with the current running process.
1319 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
1320 * Modification of MSG_task_get_compute_duration. Once a task has been
1321 processed, the value returned by this function is now equal to 0. [AL]
1322 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
1323 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
1324 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
1325 of a m_task. For now, MSG_task_cancel only works with computation
1327 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
1328 of the processor (in Mflop/s) regardless of the current load on the
1330 * API Change: use proper naming convention for MSG_getClock and
1331 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
1333 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
1334 This function changes the priority of a computation task. This priority
1335 doesn't affect the transfer rate. A priority of 2 will make a task
1336 receive two times more cpu power than the other ones. This function
1337 has been added to suit the needs of Nguyen The Loc and hasn't been that
1338 much tested yet. So if it fails, please report it and send me your code.
1340 * API Change: removed all functions and types that were marked "deprecated"
1341 since many months. Renamed MSG_global_init_args to MSG_global_init.
1343 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
1345 SimGrid (2.95) unstable; urgency=low
1348 * Steal some nice code to GNU pth to fix context detection and usage [AL]
1349 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
1350 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
1353 * Bugfix: Allow absolute paths for platform description files [MQ]
1354 * Bugfix: do free the variables after use. Leads to drastic performance
1356 * Implement max_duration (ie, timeouts) on resources [AL]
1359 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
1361 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
1362 the needed support (timeouts) [AL]
1365 * Implement measurement sockets. You can now get the bandwidth between two
1366 hosts thanks to AMOK (see below). [MQ]
1367 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
1368 dynar over the network (yeah) [MQ]
1369 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
1370 * simple/static token-ring example. [Alexandre Colucci and MQ]
1371 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
1372 in place before [MQ]
1375 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
1376 type parsing. "short" and "long" modifiers were also ignored; other
1377 modifier (such as reference level) are still ignored. [MQ]
1378 * Embeed the buffer size within the buffer itself on SG. [MQ]
1379 That way, send() are atomic and cannot get intermixed anymore (at least
1380 the ones which are less than 100k; bigger messages still have the issue)
1381 * Array size pushed by the field, not by the field type (or each
1382 and every long int will push stuff to the cbps) [MQ]
1383 * use select() to sleep since it allows to portably sleep less than one
1386 GRAS (minor cleanups)
1387 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
1390 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
1391 * type category 'ignored' killed as it was never used and were difficult
1393 * whether a type can cycle or not is now a flag, leaving room for more
1394 flags (as "ignored", if we feel the need one day ;)
1395 * Rename raw sockets to measurement sockets since "raw" has another
1396 meaning in networking community.
1399 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
1400 and offers features not belonging to GRAS but that most applications
1401 need. One day, it may be a set of plugins loadable at runtime.
1402 * New module: bandwidth
1403 bandwidth measurement between arbitrary nodes running this module. [MQ]
1405 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
1407 SimGrid (2.94) unstable; urgency=low
1409 The first beta release of SimGrid 3 !
1413 * Update the main page and the FAQ. Adding references to gforge.
1416 * Add a gras_os_getpid function.
1419 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
1420 * Extend the logs so that they also print PID, hostname, date, ... if
1422 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
1423 and kill the old version which were in testsuite/
1424 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
1428 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
1429 for users. Instead, each programming environment (GRAS, MSG,...) use it
1430 when needed to provide such a feature to users.
1431 Don't shortcut the mecanism or you will also shortcut the virtualization
1432 you need on the simulator.
1436 * Cleanups in configury with regard to compile optimization/warning flags.
1437 Also add -fno-loop-optimize to any powerpc since it's the optimization
1438 killing gcc (< 3.4.0).
1439 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
1440 needed by MSG examples complications
1441 * Borrow configury beautifications from PHP
1444 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
1445 warning (thanks loris for stumbling into this one).
1446 * Bugfix: stop loading private headers (gras_config.h) from the public
1450 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
1451 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
1452 RL would imply a DNS resolver, which is *hard* to do in a portable way
1453 (and therefore delayed).
1454 * Implement a real timer mecanism and use it in timing macros. This allows
1455 to avoid rounding errors and get a 0.000005 sec precision in timing
1456 macros. While I was at it, various cleanups:
1457 - allow to declare more than one timed section per file (fix a stupid bug)
1458 - move some private declaration to the right place
1459 - merge conditional execution and timing macros into emulation module
1460 - document the module
1461 - make sure the module cleanups its mess on gras_exit
1462 * Documentation improvements:
1463 - (new) how to compile applications using GRAS
1464 - (new) emulation support (timing macros)
1466 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
1468 SimGrid (2.93) unstable; urgency=low
1470 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
1473 - Use Paje properly where used. Still to be sanitized properly.
1474 - Portability fix: Add an implementation of the contexts using pthread
1478 - Add xbt_procname(): returns the name of the current process.
1479 Use it to show the current process's name in all logging.
1481 - fix detection of older flex version and the reaction, since we do
1482 depend on modern ones (we use lex_destroy)
1483 - Better separation of SG and RL in the libs: remove all simulation code
1484 from libgras. As a result, this lib is now only 200k when stripped.
1485 Some of the xbt modules may also be duplicated (two sets and such) and
1486 should be cleaned/killed before SG3.
1487 - Insist on using xlC on AIX because of weird problems involving gcc there.
1488 - Cleanup the make remote stuff. This is now done by scripts
1489 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
1490 mainly for our private use, but we're working on changing them to user
1493 - Bugfix: flush the socket on close only if there is some *output*.
1494 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
1496 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
1499 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
1501 SimGrid (2.92) unstable; urgency=low
1503 Alpha 3 on the path to SimGrid 3
1507 - New! First try of benchmarking macros.
1508 - New! First try so that gras_stub_generator generate deployment and
1509 remote compilation helpers.
1511 - Bugfix: Initialization fix in msg_test.
1515 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
1517 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
1519 - API Change: gras_os_sleep to take the amount of seconds as a double.
1520 Accepting an int was error prone since it was the only location where
1521 seconds were coded as such. It leaded to damn rounding errors.
1522 - Bugfix: Hard to belive that timers ever worked before this.
1524 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
1526 SimGrid (2.91) unstable; urgency=low
1528 Alpha 2 on the path to SimGrid 3
1532 - Bug fix in the lmm_solver.
1534 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
1535 through the function MSG_paje_output.
1536 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
1537 - It is possible to bound the rate of a communication in MSG with
1538 MSG_task_put_bounded() (was already in the previous version but I had forgotten
1539 to write it in the changelog).
1540 - Bug fix to let GRAS run on top of MSG until we move it directly on top
1545 - Various cleanups to the autotools stuff
1546 - Begin to move Gras examples to examples/gras/
1547 - Let make distcheck work again (yeah!)
1549 - documentation overhauled using doxygen.
1550 gtk-doc-tools is dead in SimGrid now.
1551 - Automatically extract all existing logging categories, and add the list
1552 to the documentation (long standing one, to say the less)
1554 - Cleanup the known architecture table. Reorder the entries to group what
1555 should be, and use a more consistent naming scheme.
1556 (some of the test dataset are still to be regenerated)
1557 - New! Allow library to register globals on each process just as userdata
1559 This is implemented using a xbt_dict and not a xbt_set, so we loose the
1560 lookup time (for now).
1561 Use it in msg and trp.
1562 This cleans a lot the internals and helps enforcing privacy of the
1563 headers between the gras components.
1564 - New! Add a timer mechanism, not unlike cron(8) and at(1).
1565 - Bugfix: gras_os_time was delirious in RL.
1566 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
1568 - Reenable GRAS now that it works.
1570 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
1572 SimGrid (2.90) unstable; urgency=low
1574 Alpha 1 on the path to SimGrid 3
1576 * It is a long time since the last release of SimGrid. I'm sorry about
1577 that but as I had told you, I was rewriting a lot of things. I apologize
1578 to those who had been reporting bugs to me and that I had not answered.
1579 If your bug is still in the new version, please tell me. Here is a
1580 summary of the main changes.
1582 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
1583 lead by Martin Quinson. As a consequence SimGrid gains a lot in
1584 portability, speed, and a lot more but you'll figure it out later.
1585 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
1586 I wanted to release the new MSG as soon as possible and I have
1587 broken GRAS, which is the reason why, for now, only MSG is fully
1588 functional. A laconic description of these projects is available
1589 in the documentation.
1591 * REVOLUTION 2: I have removed SG and I am now using a new simulation
1592 kernel optimized for our needs (called SURF but only the developers
1593 should use it). Hence, MSG is now roughly 30 times faster and I think
1594 that by rewriting a little bit MSG, I could event speed it up a little
1595 bit more. Beside the gain in speed, it is also much easier to encode a
1596 new platform model with SURF than it was with SG. More to come...
1598 * REVOLUTION 3: I have tried to change a little as possible the API of
1599 MSG but a few things really had to disappear. The main differences
1600 with the previous version are :
1601 1) no more m_links_t and the corresponding functions. Platforms are
1602 directly read from a XML description and cannot be hard-coded
1603 anymore. The same format is used for application deployment
1604 description. The new format is described in the documentation.
1605 Have a look in tools/platform_generation. There is a tiny script
1606 that converts from the old platform format to the new one. Concerning
1607 the application deployment format, parsing the old one is tricky.
1608 I think most of you should however be able to convert your files. If
1609 it is really an issue, I can write a C code that does the conversion.
1611 2) the toolbox tbx does not exist anymore. We now have a library
1612 with much more data-structures but without the hash-tables (we have
1613 dictionaries that are much faster).
1615 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
1617 *****************************************************************************
1618 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
1619 * don't feel like converting the oldies. (Mt) *
1620 *****************************************************************************
1623 Version 2.90: "the long awaited one"
1624 - Finished rewriting and debugging MSG. Rewrote the documentation.
1625 - disable GRAS for now since it needs to be ported to the newest SG
1628 - Finish the port to windows (using mingw32 for cross-compile)
1631 - Main loop and datastructures of SURF. A cpu resource object is
1632 functional. Surf can thus be used to create cpu's with variable
1633 performance on which you can execute some actions.
1635 2004-11-15 Martin Quinson
1636 - Port to ARM. Simply added the alignment and size descriptions. Should
1637 work, but the ARM machines are so slow that I didn't had the opportunity
1638 to 'make check' over there yet.
1640 2004-11-15 Arnaud Legrand
1641 - Trace manager now written. It uses a heap structure and is therefore
1642 expected to be efficient. It may however be speeded up (particularly
1643 when many events occur at the same date) by using red and black
1644 trees. One day maybe...
1645 - Max-min linear system solver written. It uses a sparse matrix
1646 structure taking advantage of its expected use. Most operations are
1647 O(1) and free/calloc are called as few as possible. The computation of
1648 the minimum could however be improved by using a red and black tree
1651 2004-11-03 Arnaud Legrand
1652 - Rename every gras_* function that was in xbt/ to its xbt_
1654 - Add a heap and a doubly-linked list to xbt
1655 - Added a dichotomy to the dictionaries. make check works as well before
1656 so I assume that the patch is correct. I do not know however if things
1657 run effectively faster than before now. :)
1659 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
1660 SimGrid, and the version number is bumped to 2.x
1662 2004-10-29 Martin Quinson
1663 - Introduction of the remote errors.
1664 They are the result of a RMI/RPC on the remote machine.
1665 ErrCodes being scalar values, you can't get the host on which those
1666 errors did happen. Extending the error mechanism as in Gnome is possible.
1667 No idea yet whether it is a good idea.
1669 2004-10-28 Martin Quinson
1670 - Interface revolution: the Starred Structure Eradication.
1671 I used to do typedef struct {} toto_t; and then handle *toto_t.
1672 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
1673 - ???_t is a valid type (builded with typedef)
1674 - s_toto_t is a structure (access to fields with .)
1675 - s_toto is a structure needing 'struct' keyword to be used
1676 - e_toto_t is an enum
1677 - toto_t is an 'object' (struct*)
1679 typedef struct s_toto {} s_toto_t, *toto_t;
1680 typedef enum {} e_toto_t;
1681 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
1682 s_toto_t) is private.
1684 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
1685 so that it can set the variable to NULL. It was so for dicts and sets,
1686 it changed for dynars.
1688 - Fix a bunch of memleaks in dict_remove
1689 - Fix a bug in sg/server_socket opening: it failed all the time.
1691 2004-10-07 Martin Quinson
1692 - Speed up dynar lookup operation a bit.
1694 gras_dynar_get is dead.
1696 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
1697 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
1698 (which gives you the address of the stored data).
1700 gras_dynar_get_as is an helpful macro which allows you to retrieve a
1701 copy of the data using an affectation to do the job and not a memcpy.
1703 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
1704 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
1706 It does not really speedup the dynar test because they are
1707 setting elements all the time (and look them seldom). But the dict does
1708 far more lookup than setting.
1710 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
1712 2004-10-05 Martin Quinson
1713 - Allow to (en/dis)able the cycle detection at run time.
1715 Whether we should check for cycle or not is now a property of each
1716 datatype. When you think there may be some cycle, use datadesc_cycle_set.
1717 datadesc_cycle_unset allow to remove this property when previously set.
1719 Note that the cycle detection is off by default since it impacts the
1720 performance. Watch the data you feed GRAS with ;)
1722 This property is hereditary. Any element embedded in a structure having it
1723 set have it set for the time of this data exchange.
1725 You should set it both on sender and receiver side. If you don't set it on
1726 sender side, it will enter an endless loop. If you forget on receiver
1727 side, the cycles won't be recreated after communication.
1729 - Header reorganization.
1730 Kill gras_private.h, each submodule must load the headers it needs.
1732 2004-10-04 Martin Quinson
1733 - Interface revolution: do not try to survive to malloc failure.
1735 Now, gras_malloc and friends call gras_abort() on failure.
1736 As a conclusion, malloc_error is not a valid error anymore, and all
1737 functions for which it was the only gras_error_t return value are
1738 changed. They now return void, or there result directly.
1739 This simplify the API a lot.
1741 2004-09-29 Martin Quinson
1742 - Re-enable raw sockets.
1743 Created by gras_socket_{client,server}_ext;
1744 Used with gras_raw_{send,recv}
1747 It should allow to kill the last bits of gras first version soon.
1749 This is not completely satisfactory yet (duplicate code with
1750 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
1753 - Simplify transport plugin (internal) interface by not passing any
1754 argument to _server and _client, but embedding them in the socket
1757 2004-09-28 Martin Quinson
1758 - Finish the port to AIX.
1759 autoconf was my problem (segfault within the malloc replacement
1760 function. No idea why)
1762 2004-09-16 Martin Quinson
1763 - Fix some size_t madness on 64bit architectures.
1765 2004-09-08 Martin Quinson
1766 - Reduce the number of system headers loaded, overload some more system
1767 calls (such as malloc to cast the result of the system one, and work
1769 - Fix and reintroduce the config support
1771 2004-09-07 Martin Quinson
1772 - Source code reorganization to allow Arnaud to surf all over there.
1773 - Allow to document the logging categories.
1774 - Remove all uppercase from logging categories and useless cleanup in names.
1776 2004-08-18 Martin Quinson
1777 Version 0.6.2 (protocol not changed; API changed)
1778 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
1779 gras_error_t), and NULL when not found. Functions expecting a msgtype
1780 as argument (msg_wait; msg_send) deal with NULL argument by providing a
1781 hopefully usefull message.
1782 - Portability to prehistoric sparcs again
1784 2004-08-17 Martin Quinson
1785 Version 0.6.1 (protocol not changed; ABI not changed)
1786 - prealloc some buffers to speed things up
1788 2004-08-11 Martin Quinson
1789 Version 0.6 (protocol not changed; ABI expended)
1790 - The parsing macro can deal with the references, provided that you add
1791 the relevant annotations (using GRAS_ANNOTE(size,field_name))
1793 2004-08-09 Martin Quinson
1794 Version 0.5 (protocol not changed; ABI changed)
1795 - Allow to off turn the cycle detection code in data exchange at
1796 compilation time. It should be at run time, but I'm short of time (and
1797 the config stuff is still broken). That way, we keep dict out of the
1798 critical path, which is good because the performance is poor:
1799 - search not dichotomial yet
1800 - dynar give no way to access their content and memcpy everytime
1801 - In composed data description (struct, ref and so on), stop foolness of
1802 keeping the subtype's ID, but store the type itself. This keeps sets out
1803 of the critical path, which is good since they rely on dynar and
1804 dictionnaries. The only loose of that is that we cannot detect the
1805 redeclaration of a structure/union with another content (but I'm not sure
1806 the code detected well this error before anyway). We still can detect
1807 the redefinition discrepancy for the other types.
1808 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
1809 it breaks the code because of type-punning used all over the place).
1810 This breaks on all non-gcc architectures (for now).
1812 All those changes (plus the buffer of last time) allow me to gain 2 order
1813 of magnitude on cruel tests consisting of 800000 array of integers on two
1814 level of a hierarchical structure (200 secondes -> 4 secondes)
1817 - the selector of reference must now return the type it points to, not
1818 the ID of this type.
1820 2004-08-06 Martin Quinson
1821 Version 0.4 (protocol changed; ABI not changed)
1822 - Allow to pass --gras-log argument to processes in simulation mode. Really.
1823 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
1824 - Implement a buffer transport, and use it by default (it relies on tcp in
1825 real life and on sg in simulation).
1826 That's a bit hackish since I had a new field to the structure to store
1827 its data without interfering with the subtype ones. Inheritance
1828 is tricky in C. And that's a kind of reverse inheritance with one class
1829 derivating two classes. Or maybe a game with java interfaces. Anyway,
1830 that's damn hard in C (at least).
1831 Moreover, I got tired while trying to ensure plugin separation and
1832 genericity in SG mode. MSG wants me to do weird things, so let's go for
1833 cruel hacks (temporarily of course ;).
1834 See comment in transport_private.h:71
1835 - do not include all the _interface headers in private but in the files
1836 which really need them (to cut the compilation time when they are
1839 2004-07-26 Martin Quinson
1840 Version 0.3 (protocol not changed; ABI changed)
1841 - Major overhault of the datadesc interface to simplify it:
1842 - shorted the function names:
1843 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
1844 - add a trivial way to push/pop integers into the cbps without malloc.
1845 This allows to make really generic sub_type description, which simply
1846 pop their size of the stack.
1847 - add a function gras_datadesc_ref_pop_arr() which does what users want
1848 most of the time: Declare a dynamic array (which pops its size of the
1849 stack) and declare a reference to it. Poor name, but anyway.
1850 - kill the post-send callback, add a post-receive one
1852 2004-07-23 Martin Quinson
1853 Version 0.2 (protocol changed; ABI changed)
1854 - add some testing for cpbs in the test cases, and fix some more bugs.
1855 This invalidate again the little64 data file, since I cannot regenerate
1857 - remove an awfull optimization in the logging stuff, allowing me to:
1858 - understand it again
1859 - learn gcc how to check that the argument match the provided format
1860 - fix all errors revealed by gcc after that
1861 - internal keys of dict are not \0 terminated. Deal with it properly in
1862 loggings instead of segfaulting when the user want to see the logs :-/
1864 2004-07-22 Martin Quinson
1865 - Fix some stupid bug preventing cbps (callback postit) from working
1867 2004-07-21 Martin Quinson
1868 - Some documentation cleanups
1869 - remove the useless last argument of msgtype_declare
1870 - rename the Virtu functions to fit into the 'os' namespace
1871 - move headers src/include -> src/include/gras/ and stop fooling with
1872 gras -> . symbolic link
1873 - make distcheck is now successful
1875 2004-07-19 Martin Quinson
1877 - Build shared library also
1878 - Install html doc to the right location
1879 - stop removing maintainer files in make clean
1880 - build tests only on make check
1882 2004-07-13 Martin Quinson
1884 - No major issue in previous version => change versionning schema
1885 - Re-enable little64 convertion test now that Abdou kindly regenerated the
1886 corresponding dataset.
1888 2004-07-11 Martin Quinson
1890 - Get it working with any kind of structure (we can compute the padding
1891 bytes remotely for all the architectures I have access to)
1892 - Implement the structure parsing macro (still not quite robust/complete)
1893 - Improvement to the remote testing toysuite
1895 2004-07-10 Martin Quinson
1896 [autoconf mechanism]
1897 - get ride of a bunch of deprecated macros
1898 - actually run the test for two-compliment, not only compile it :-/
1899 - test whether the structures get packed (and bail out if yes. Damn.
1900 Alignment is a serious matter)
1901 - test whether the structures get compacted (but respecting the alignment
1902 constraints of each types)
1903 - test whether the array fields of structures can straddle alignment boundaries
1905 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
1906 (took me 2 hours to find that bug, looking at the wrong place)
1907 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
1908 before sending/receiving and are used to compute the offsets of fields
1909 - Given that padding size depend even on compiler options, keep track of
1910 alignment and aligned_size only for the current architecture. Not a big
1911 deal since we send structure fields one after the other (seems
1913 - Add the datastructure used for IEEE paper by the PBIO guys to the test
1914 program, let it work on linux/gcc/little32. portability todo.
1916 2004-07-08 Martin Quinson
1917 - import and improve remote compilation support from FAST
1918 - make sure make check works on half a dozen of machines out there
1920 2004-07-07 Martin Quinson
1921 Let's say it's version 0.0.3 ;)
1922 - Implement conversions (yuhu!)
1923 - Let it work on solaris (beside conversion, of course)
1924 - Stupid me, using rand() to generate the conversion datatests in not wise.
1926 2004-07-06 Martin Quinson
1927 - Let make dist work, since I'm gonna need it to compile on remote hosts
1928 - Let Tests/datadesc_usage write the architecture on which the file was
1929 generated as first byte.
1930 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
1931 architecture descriptions.
1932 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
1933 on those architectures.
1934 - Optimization: send/recv array of scalar in one shoot
1936 2004-07-05 Martin Quinson
1937 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
1939 - Plug a whole bunch of memleaks
1940 - each process now have to call gras_{init,exit}. One day, their log
1941 settings will be separated
1942 - Continue the code factorisation between SG, RL and common in Transport.
1944 2004-07-04 Martin Quinson
1946 - Redistribution between SG and RL.
1947 We wanna have to accept in SG, so move accepted related parts of RL in
1948 the common part. (more precisely, the dynar of all known sockets is no
1949 more a static in transport.c, but part of the process_data)
1951 [gras_stub_generator]
1952 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
1954 2004-07-03 Martin Quinson
1955 - Create a new log channel tbx containing dict, set, log, dynar (to shut
1956 them all up in one shot)
1958 - Fix the ugly case of reference to dynamic array.
1959 - New (semi-public) function gras_datadesc_size to allow the messaging
1960 layer to malloc the needed space for the buffer.
1962 - gras_socket_close now expect the socket to close (and not its address to
1963 put NULL in it after it). This is because the socket passed to handlers
1964 is one of their argument (=> not writable).
1966 - propagate the interface cleanup from last week in datadesc, ie remove a
1967 superfluous level of indirection. User pass adress of variable
1968 containing data (both when sending and receiving), and not of a variable
1969 being a pointer to the data. Let's say that I like it better ;)
1970 The price for that is constructs like "int msg=*(int*)payload" in
1971 handlers, but it's a fine price, IMHO.
1973 - Let it work in RL (yuhu)
1975 2004-06-21 Martin Quinson
1977 - porting SG plugin and SG select to new standards (works almost).
1978 - plug memleaks and fix bugs around.
1981 - cleanup the prototype of data recv and force users to specify when they
1982 want to handle references to objects. Test case working even for cycles.
1983 - plug memleaks. Valgrind is perfectly ok with this.
1985 2004-06-12 Martin Quinson
1987 - cleanup the separation between plugin and main code in plugin creation
1989 2004-06-11 Martin Quinson
1991 - Reput hook for raw sockets, needed for BW experiments
1992 - kill a few lines of dead code
1993 [Data description] Interface cleanup
1994 - gras_datadesc_by_name returns the searched type or NULL.
1995 That way, no variable is needed to use a type desc once, which makes
1997 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
1998 two parameters were strings (field name, type name), leading to
2000 [Dicos] Interface cleanup
2001 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
2002 This is consistant with the dynar API.
2004 2004-04-21 Martin Quinson
2006 - Porting to new standards.
2008 - interface cleanup.
2009 There is no bag anymore, no need to take extra provision to mask the
2010 pointers behind "ID".
2011 Better splitup of functions between files create/exchange/convert.
2012 This is still a bit artificial since convert and receive are so
2013 interleaved, but anyway.
2015 - add a queued message list to procdata (the ones not matching criteria
2017 - factorize some more code between SG and RL wrt procdata
2019 - use gras_exit in example to track memleaks
2020 - get rid of gs_example now that GS is properly integrated into gras
2021 - update run_test to integrate the lastest tests (datadesc)
2023 - rename WARNINGn macros to WARNn since it prooved error-prone
2025 2004-04-19 Martin Quinson
2027 - register init/exit functions within gras module mechanism
2028 - send/receive function.
2029 Convertion is not implemented, but short-cutted if not needed.
2030 struct/array elements are sent one by one (instead of block-wise), but
2031 nobody really cares (yet). Get a prototype before optimizing.
2032 - tests (using a file socket) for DD send/receive on:
2033 - base types: int, float
2034 - array: fixed size, string (ie ref to dynamic string)
2035 - structure: homogeneous, heterogeneous
2036 - chained list, graph with cycle
2037 Believe it or not, valgrind is not too unhappy with the results. The
2038 cycle happily segfaults, but the others are ok. And I'm sick of pointers
2042 - Bugfix when using a filename explicitely (instead of '-')
2044 2004-04-09 Martin Quinson
2046 - factorize more code between RL and SG in socket creation
2047 - Complete the implementation and tests of:
2049 o file (only in RL, and mainly for debugging)
2051 I lost 3 days to design a portable address resolver, and then decided
2052 that the prototype mainly have to run on my box.
2053 Addressing portability too early may be like optimizing too early :-/
2055 - use gras_init in the Tests instead of the crappy parse_log_opt
2056 (the latter function is removed)
2057 [Conditional execution]
2058 - New functions: gras_if_RL/gras_if_SG (basic support for this)
2059 [Code reorganisation]
2060 - Get rid of libgrasutils.a since it makes more trouble than it solves.
2061 Build examples against the RL library, since there is no way to disable
2062 its creation for now.
2064 For information, the beginning of coding on GRAS was back in june
2065 2003. I guess that every line has been rewritten at least twice since