1 SimGrid (3.12) NOT RELEASED; urgency=low
4 * Interface improvement:
5 - Rename MSG_host_is_avail(h) to MSG_host_is_on(h)
6 - Rename MSG_task_set_compute_duration(t) to MSG_task_set_flops_amount(t)
7 - Rename MSG_task_set_data_size(t) to MSG_task_set_bytes_amount(t)
8 Rename MSG_task_get_data_size(t) to MSG_task_get_bytes_amount(t)
9 - Massive cleanups in the functions related to the energy
11 * Interface improvement:
12 - Rename Host.isAvail() to Host.isOn()
13 - Rename Process.currentProcess() to Process.getCurrentProcess()
17 - SIMIX_process_throw: raises an exception in a remote process
18 * Refactoring: Separate submodules
19 - libsmx: the public interface, as libc in a real system
20 - popping: the strange dance that converts a user request into a kernel handling
21 - smx_context_*: the virtualization mechanisms that embeed the user code
22 - smx_*: the handling of each simcalls
23 * Rename smx_action_t into smx_synchro_t, making explicit that these
24 things are used to synchronize processes with their environment.
25 For example, a communication is a sort of synchronization involving
26 the communicating processes (that may block until the exchange) and
27 the platform. The same can be said from computations, etc.
31 - Onesided early support for : MPI_Win_(create, free, fence, get_name, set_name, get_group), MPI_Get, MPI_Put, MPI_Accumulate, MPI_Alloc_mem, MPI_Free_mem.
32 - MPI_Keyval*, MPI_Attr* functions, as well as MPI_Comm_attr*, MPI_Type_attr* variants (C only, no Fortran support yet)
33 - MPI_Type_set_name, MPI_Type_get_name
34 - MPI_*_c2f and MPI_*_f2c functions
35 - MPI_Info_* functions (beware, get_nthkey may not follow the insertion order)
36 - MPI_Pack, MPI_Unpack and MPI_Pack_size functions
37 - Activate a lot of new tests from the mpich 3 testsuite
39 - Constant times can be injected inside MPI_Wtime and MPI_Test through options smpi/wtime and smpi/test
40 - InfiniBand network model added : Based on the works of Jerome Vienne (http://mescal.imag.fr/membres/jean-marc.vincent/index.html/PhD/Vienne.pdf )
41 - When smpi/display_timing is set, also display global simulation time and application times
42 - Have smpirun, smpicc and friends display the simgrid git hash version on --git-version
43 * Collective communications
44 - SMP-aware algorithms are now dynamically handled. An internal communicator is created for each node, and an external one to handle communications between "leaders" of each node
45 - MVAPICH2 (1.9) collective algorithms selector : normal and SMP algorithms are handled, and selection logic is based on the one used on TACC's Stampede cluster (https://www.tacc.utexas.edu/stampede/).
46 - Support for Rabenseifner Reduce/Allreduce algorithms (https://fs.hlrs.de/projects/par/mpi//myreduce.html)
48 - Replay now uses algorithms from wanted collective selector
49 - Replay can be used with SMP-aware algorithms
50 - Memory occupation of replay should now be contained (temporary buffers allocated in collective algorithms should be shared between processes)
51 - Replay can now replay several traces at the same time (check examples/smpi/replay_multiple example), to simulate interactions between several applications on a given platform. User can specify the start time of each instance. This should also allow replay + actual applications to run.
53 - [#17799] : have mpi_group_range_incl and mpi_group_range_excl better test some corner cases
54 - Correctly use loopback on fat-tree clusters
55 - Asynchronous small messages shouldn't trigger deadlocks anymore
58 - "Full" network optimization flag was broken since Surf++
59 - Better handling of precision flags in maxmin
60 - Fix bug causing sometimes "Impossible" errors
61 - Properly pass cluster properties to included hosts
62 * Improvement of the Energy plugin.
63 - Always update the consumption before returning that value
64 - New property: watt_off to denote the disipation when the host is off
67 - Add a xbt_heap_update function, to avoid costly xbt_heap_remove+xbt_heap_insert use
68 - Add a xbt wrapper for simcall_mutex_trylock (asked in [#17878])
69 - Add two new log appenders : rollfile and splitfile. Patch by Fabien Chaix.
71 * Tracing is now always enabled (no way to turn it out)
72 * Move headers around to sort them out on installed systems:
73 - instr/instr.h -> simgrid/instr.h
74 - instr/jedule/* -> simgrid/jedule
76 -- $date Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
78 SimGrid (3.11) stable; urgency=low
83 * Normalizing pointers addresses tool for better diff between logs
86 * Add cloud examples using new VMs
87 - examples/msg/cloud/two_tasks_vm.tesh
88 - examples/msg/cloud/simple_vm.tesh
89 - examples/java/cloud/cloud.tesh
90 - examples/java/cloud/migration/migration.tesh
91 * Add java surf examples:
92 - examples/java/surfPlugin/surf_plugin.tesh
93 - examples/java/reservationSurfPlugin/reservation_surf_plugin.tes
94 - examples/java/surfCpuModel/surf_cpu_model.tesh
95 * Add SMPI+MSG example:
96 - examples/smpi/smpi_msg_masterslave/
101 - msg task destroy cancel test
102 - msg_host on/off test
103 * Move all tests in testsuite to teshsuite (adding tesh files)
104 * Restructure teshsuites
105 - one folder for each kind of test
106 * Restructure AddTests.cmake
108 - structure the order of tests (with sections)
111 * Add virtual machine
112 - creation of a VM on a PM
113 - migration of a VM from a PM to another PM
115 - MSG_process_join(msg_process_t process, double timeout)
116 - msg_bar_t MSG_barrier_init(unsigned int count)
117 - int MSG_barrier_wait(msg_bar_t barrier)
118 - void MSG_barrier_destroy(msg_bar_t barrier)
119 - msg_as_t MSG_environment_as_get_by_name(const char * name)
120 * New option "msg/debug_multiple_use" to help debugging when a task is used
123 - Improvements and finalization of MSG_storage, MSG_file APIs and their
125 - Increase code coverage in test suites
129 * Protect context stacks against stack overflow. The number of protected memory
130 pages allocated on the top of each stack (1 by default) can be configured
131 with the new command line option --cfg=contexts/guard_size:<value>.
132 * Simcalls are now generated by a python script that
133 - generates files included by SimGrid
134 - checks that all the functions exist, and proposes prototypes
136 - remove sem_destroy, file_set_data, comm_destroy, vm_set_state,
137 host_set_data, host_get_data
139 - simcall_process_join(smx_process_t process, double timeout)
140 * Fix bug where sleeping processing could not be suspended.
143 * Translate surf models from C to C++
144 - Generic classes for all models: Model, Resource, Action
145 - A generic interface for each kind of model (CPU, Network, Storage
146 Workstation, WorkstationVM)
148 * Translate surf routings from C to C++
149 * Add callbacks using sigc++ or boost::signals2
150 - Add callback functions for resource creation/destruction
151 - Add callback functions for action state change
152 - Handle Energy as a plugin
153 * Replace swag by boost::intrusive
154 * Add new routing models for clusters. For documentation, see
155 http://simgrid.gforge.inria.fr/simgrid/latest/doc/platform.html#pf_cluster
156 - tori, with topology="TORUS" and topo_parameters="ndim1,ndim2,...,ndimn"
157 parameters for cluster tag
158 - Fat trees, with topology="FAT_TREE" and
159 topo_parameters="h;m1,...,mh;w1,...,wh;p1,...,ph" parameters for cluster tag
160 - see examples/platforms/torus_cluster.xml and
161 examples/platforms/fat_tree_cluster.xml
165 * Hostfiles support host:nb_processes construct to deploy several processes on
167 * Collective communication algorithms should not crash if used with
168 improper number of nodes and report the error.
169 * SMPI now partially supports MPI_Topologies : MPI_Cart_create, MPI_Cart_shift,
170 MPI_Cart_rank, MPI_Cart_get, MPI_Cart_coords, MPI_Cartdim_get,
171 MPI_Dims_create, MPI_Cart_sub are supported.
172 * New interface to use SMPI programmatically (still depends on MSG for
173 some parts, see examples/smpi/smpi_msg_masterslave) :
174 - SMPI_app_instance_register(const char *name, xbt_main_func_t code,
178 * Global variables privatization in MPI executables is now performed at runtime
179 with the option smpi/privatize_global_variables (default:no).
180 Limitations : Linux/BSD only, with mmap enabled. Global variables inside
181 dynamic libraries loaded by the application are not privatized (static
182 linking with these libraries is advised in this case)
185 * Options defined in XML work correctly now.
188 * New cmake option, enable_lib_in_jar, to control whether native libraries are
189 copied into simgrid.jar or not (ON by default). Use this option if you want
190 to reduce the size of the installed simgrid.jar, *and* the native libraries
191 are kept installed elsewhere.
192 * Surf binding with SWIG (code generated in maintainer mode only):
193 - plugin to handle callbacks
194 - CPU model only for the moment
197 * Supernovae build mode is definitively removed. It was used to improve
198 inlining and inter-module optimizations. It is nowadays superseded by
199 link-time optimizations commonly available in compilers.
200 * Update ns-3 find lib. Bindings for ns-3 should work again now.
201 * Add boost dependency for surf++
202 * Add new macro for tests
203 - ADD_TESH(name <tesh_args>)
204 - ADD_TESH_FACTORIES(name "thread;ucontext;raw" <tesh_args>)
208 - xbt_bar_t XBT_barrier_init(unsigned int count)
209 - int XBT_barrier_wait(xbt_bar_t barrier)
210 - void XBT_barrier_destroy(xbt_bar_t barrier)
211 * Make the xbt_os_time module public
213 -- Sat May 31 22:39:38 CEST 2014 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
215 SimGrid (3.10) stable; urgency=low
217 The Clean Diaper Release, a.k.a. SimGrid is leak-free.
220 * Reintegrate Java to the main archive as desynchronizing these
221 package is not acceptable anymore (Java is now considered stable)
222 * Add explicit synchronization facilities through semaphores
223 * Bug fix: Task.setDataSize() only changed the C world, not the value
224 cached in the Java world
227 * Dramatically change the way files are handled. API and internals changed, but
228 this part of MSG was not considered as production grade either.
229 * Add explicit synchronization facilities through semaphores
230 * Add a new function MSG_host_get_process_list()
231 * Preliminary DVFS support (see examples/msg/energy/ for details)
234 * SMPI is now included directly in the libsimgrid as the windows
235 linker doesn't force us on splitting it anymore.
236 * Improvements of the SMPI replay tool:
237 - Most of the collective communications are now rooted in the same process as
238 in the original application.
239 - Traces now rely on the same MPI data type as the application (MPI_BYTE was
240 used until now). Multiple data types can now be used in a trace.
241 - The replay tool now supports traces produce either by TAU or a modified
243 - Bug Fix: the compute part of the reduce action is now taken into account.
244 - Gatherv collective is now supported
245 - SimGrid (SMPI for now) can generate replay traces as well. Option -trace-ti
246 of smpirun outputs time independent traces for the current run. One file
247 is created per process. If too many processes are simulated, this behavior
248 can be changed to one file for all processes by using the
249 tracing/smpi/format/ti_one_file flag
250 * smpirun generates the host file if needed (with given host count and platform)
251 * Integration of more than 100 STAR-MPI, MPICH, OpenMPI collective algorithms
252 - allows to select one in particular with --cfg=smpi/coll_name:algorithm
253 - allows to use the decision logic of OpenMPI(1.7) or MPICH(3.0.4) by setting
254 --cfg=smpi/coll_selector:(mpich/ompi)
255 * Support for new functions : MPI_Issend, MPI_Ssend, Commutative operations in
257 * Add a --cfg:tracing/smpi/internals option, to trace internal communications
258 happening inside a collective SMPI call.
259 * Fix the behavior of complex data types handling.
260 * Make MPI_Wtime another synchronization point to take computations into
262 * Replace MPICH-1 test suite by the one from MPICH 3.0.4. Can be built using
263 enable_smpi_MPICH3_testsuite flag in cmake. Run with ctest.
264 * Add all missing Fortran bindings, SMPI should work with Fortran 90
265 (no privatization of global variables yet)
266 * Preliminary DVFS support (see examples/smpi/energy/ for details)
269 * Verification of liveness properties is now available for SMPI applications
270 (in addition to MSG applications)
271 * Bugged examples using SMPI in examples/smpi/mc/
272 * Add --cfg=model-check/visited option. Allows the verification of infinite
273 programs. Detection of loops in the execution thanks to the system state
274 comparison and reduction of the state space to explore. Can be combined with
275 DPOR for safety properties.
278 * Allow to change SimGrid configuration (see --help) within the code
279 thanks to SD_config() as it can be done in MSG.
280 * Add a new function SD_task_set_amount() upon user request.
283 * Handle units for values (10ms, 10kiloflops, 10Bps, 1GB, ...)
284 * Remove rule based routing (no more PCRE dependency)
285 * Add a limiter_link option to cluster tag, to specify a maximum reachable
286 bandwidth in fullduplex mode when it is less than twice the nominal bandwidth.
287 * Add a loopback_bw and loopback_lat options to cluster tag.
288 * Fix the peer tag that could not be mixed with other AS within a Vivaldi
289 routing. Now peers are encapsulated in an AS and have their own private
290 router but this is transparent.
293 * Our own implementation of getline is renamed xbt_getline, and gets
294 used even if the OS provide a getline(). This should reduce the
295 configuration complexity by using the same code on all platforms.
296 * New type: xbt_cfg_elm_boolean.
297 * Allow to use yes/no for boolean configuration options in the command line.
298 * Allow to disable SimGrid cleanups at exit from command line option.
299 There are situations where one may want a simulation to end with an exit.
300 Unfortunately, calling exit may cause SimGrid to segfault, which is quite
301 annoying when scripting around the simulator. Adding a
302 --cfg=clean_atexit:no allows to circumvent this issue.
305 * Lots of memory leaks were corrected in this release.
306 There is no known memory leaks anymore, in all of our 600+ tests.
307 * New command line option --version, to get SimGrid version information.
308 Packagers may want to add extra words to SIMGRID_VERSION_EXTRA defined in
310 * Supernovae builds are deprecated, and expected to be removed in the next
313 -- Sun Nov 17 00:26:44 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
315 SimGrid (3.9) stable; urgency=low
317 The Grasgory release: GRAS is really dead now.
319 * Complete overhaul of the internal host structures scheme.
322 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
323 was considered as experimental and badly maintained since then.
324 * Keeping it was thus a trap to our potential users, that could take
325 it instead of MSG or SMPI by mistake despite is pity state.
326 * GRAS seems to have very few users (if any), and no one volunteered
327 to maintain it further. It also induces a lot of XBT code (for
328 portability sake), that must be maintained too.
329 * For all these reasons, we killed GRAS. If someone wants to revive it
330 in the future, don't cry, our git history still remembers of GRAS.
333 * Major overhaul. Merge our documentation again as time proved that
334 splitting it was really not helping our users.
335 * Further improve the developer documentation to help newcomers
336 hacking on SimGrid itself. The user documentation (and in
337 particular, the beginner documentation) is still in a sorry state.
340 * Now works on Windows too!
341 * Much more extensive test suite, from MPICH
344 * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
345 (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
346 dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
347 * Bug fix: let task be scheduled when the last dependency to be solved is
348 a control dependency.
349 * Remove SD_load_environment_script function.
350 Use the C sg_platf function if you want to declare a platform
354 * New function: MSG_process_get_number()
355 * Old function documented: MSG_config()
356 * Remove MSG_load_platform_script function
357 Use the C sg_platf function if you want to declare a platform
361 * Change the default value of the TCP_gamma constant (maximal size of TCP
362 congestion window) to a more realistic 4MiB value. If you notice changes in
363 your simulation results, you can fall back to the previous 20k tiny window
364 by adding --cfg=network/TCP_gamma:20000 on command line.
365 * (Hopefully) fix a bug wrt periodic availability and state traces
366 * Bug fix: use default values at start when first event in availability/state
367 trace is not at time 0.
370 * remove the "new_" part of function name sg_platf_new_trace_connect
371 (resulting in sg_platf_trace_connect), since it does not create
375 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
376 use case where it's really mandatory, and maintaining it was a pain in
378 * New: xbt_fifo_search(), search an item with a user-provided
379 comparison function instead of dumb pointer comparison.
382 * Fix the lua deployment:
383 Use `simgrid.init_application()` before deployment instead of
384 `simgrid.msg_register_application()` after.
387 * Transfer the tracing files into the corresponding modules.
389 -- Tue Feb 5 11:31:43 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
391 SimGrid (3.8.1) stable; urgency=low
393 The "we are told that some people want to also *install* the simgrid
396 * Add missing file "tesh.1" to the archive.
398 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
400 SimGrid (3.8) stable; urgency=low
402 The Psssshiiiit release: SimGrid jumps into the Cloud.
405 * Add an experimental interface to manipulate VMs. They are mainly
406 process groups with very few intrinsic semantic, but they should
407 allow you to build the semantic you want easily.
408 * New function: MSG_host_set_property_value()
409 * New function: MSG_process_on_exit(). To clean memory in all cases.
410 * Bug fixes that made the host (and link) failures unusable.
411 * Add a way to auto-restart process when the host in which they are
412 executing comes back (ON_FAILURE="RESTART" on deployment file,
413 MSG_process_auto_restart_set).
414 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
415 please stop using the old ones, they are DEPRECATED.
417 * Deprecate functions MSG_global_init() / MSG_global_init_args()
418 Please use MSG_init() instead. (reducing the amount of entry
419 points in the library helps us).
420 * Make it impossible to link against the wrong version of the lib
421 * Deprecate MSG_clean(). No need to call it anymore.
422 * Function MSG_get_host_number() is not deprecated anymore.
425 * Split the doc into a user guide and a reference guide.
426 * Start a developper guide to help people hacking on SimGrid.
429 * Enable tracing by default. This modules rocks you should use it.
430 * Remove option custom_flags. Now use environment variables CFLAGS
432 * Use default cmake things to detect lua instead of home grown ones.
433 * New option "enable_mallocators" to disable mallocators, for debugging
434 purpose ("on" by default).
437 * Bug fixes around the resource failures: don't let the processes
438 survive the host they are running onto.
439 * Add an interface to auto-restart processes when the host in which they are
440 executing comes back.
441 * Ensures that SIMIX_clean is called automatically. It's not part of
442 the public interface anymore (bindings should be updated).
445 * Bug fix for when SD_Simulate is called with a positive value: be careful
446 when comparing doubles. Sometimes they are different for non significant
448 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
449 parallel task whose initial work is distributed among host according
450 to the Amdahl's law. Such tasks are created with a parameter alpha
451 that corresponds to the non-parallelizable part of the computation.
452 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
453 between two sets of workstations assuming a 1D block distribution (each
454 workstation owns a similar share of data) on both sides.
456 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
457 Data redistribution will be automatically scheduled once parent and child
458 are both scheduled. The filling of computation_amount and
459 communication_amount structures is now done seamlessly thanks to the chosen
461 * New function SD_workstation_dump to display various information
462 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
463 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
464 bandwidth on the route onto which the task is scheduled and the amount of
466 To divide the nominal bandwidth by 2, the rate then has to be :
467 rate = bandwidth/(2*amount)
468 * Compute tasks that have failed can now be rescheduled and executed again
469 (from their beginning)
470 * Increasing source code coverage (src/simdag is now covered at 95.8%
474 * Re-implement time-independent trace replay using SMPI (at the
475 smpi_smp_* level) instead of MSG. This should replace
476 examples/msg/actions/actions.c
477 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
478 hindexed and structs)
479 * Implement the exchange of non-contiguous data.
480 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
481 * Correct behavior of smpi/sender_gap and set its default value to 0
482 * Add option to asynchronously send small messages to allow better
483 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
484 specifies the size in bytes under which messages will be asynchronously sent.
485 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
486 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
489 * New C interface to define a platform: XML is now optional.
490 For more info, please check include/simgrid/platf.h.
491 * New interface to define random platforms from the C:
492 For more info, please check include/simgrid/platf_generator.h and
493 examples/msg/masterslave/masterslave_platfgen.c
494 * Export a sg_cmdline dynar containing all the arguments we got from
498 * Two new tracing options for adding comments to trace file so you
499 can track your experiments (see --help-tracing for details).
500 * New option to generate a impoverished trace file (--cfg=tracing/basic:1)
501 * Adding the SimGrid version that generated the trace file as a comment.
502 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
503 * Fix to avoid key clashes on Paje links
504 * Other minor fixes related to the Paje specification
507 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
508 and renamed to xbt_str_hash() and xbt_str_hash_ext().
509 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
510 * Greatly improve the robustness of mmalloc to user errors (such as
511 using an area after freeing it, or freeing it twice)
513 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
515 SimGrid (3.7.1) stable; urgency=low
518 * Restore the prototype of MSG_process_create_with_environment() to
519 the pre-3.7 situation by removing the kill_time argument.
520 * Add a MSG_process_set_kill_time() function instead.
523 * Fix weird behaviors when dealing with parallel tasks.
526 * Simgrid is now built as a dll.
527 * Simgrid-java now works on Windows.
528 * Simgrid-Java is now included into Windows package.
531 * First pre-build package for MacOSX.
534 * Fix compilation when using MSG_USE_DEPRECATED.
535 * Fix some compilation issues on Macs and Windows.
536 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
537 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
539 We discovered that the Lua console is broken, but we are missing the
540 manpower to fix it right now. The problem existed in 3.7 too, so we
541 are not blocking the release for that. Sorry if you depended on this
542 feature, any help would be really welcome.
544 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
546 SimGrid (3.7) stable; urgency=low
548 The "spring cleanups (before the next Big Project kicks in)" release.
551 * We can specify the SMPI latency/bandwidth factor with command line
552 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
553 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
554 You can also use the "config tag" from platform file by adding this line
555 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
556 (see "example/platforms/tag_config.xml" to use "config tag").
557 Note that the command line supersedes the platform file configuration.
558 * Change the correction factors used in LMM model, according to
559 the latest experiments described in INRIA RR-7821.
560 Accuracy should be improved this way.
561 * Use the partial invalidation optimization by default for the
562 network too. Should produce the exact same results, only faster.
563 * Major cleanup in surf to merge models and split some optimization
564 mechanisms from the core of the models. As a result you can now
565 specify which model to use (e.g., --cfg=network/model:LV08
566 --cfg=cpu/model:Cas01) and which optimization mode to use
567 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
568 Incompatible combinations should err at initialization. See
569 --help-models for the list of all models and optimization modes.
570 * The CLM03 workstation model was dropped for simplicity because it
571 used the deprecated CM02 network model. Use default instead.
572 * Rename the TCP_gamma configuration option to network/TCP_gamma
573 * Rename the coordinates configuration option to
574 network/coordinates, and document it
575 * Use now crosstraffic keyword instead of the terribly misleading
576 fullduplex keyword. It is activated by default now in the current
577 default model, use --cfg=network/crosstraffic:0 to turn it off.
578 * Ongoing refactoring the model parsing to make XML files optional
579 See include/simgrid/platf.h for details (still to be completed)
582 * Major overhaul of the documentation. Almost instructive now :/
583 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
584 functions and friends. This interface was considered as
585 deprecated since over 2 years, it's time to inform our users that it is.
586 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
587 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
588 use these (crappy) functions in your code.
589 These functions will be removed soon. Stop using them now.
590 * Deprecate MSG_get_host_{table,number}
591 Implement MSG_hosts_as_dynar() instead.
592 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
593 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
596 * Stabilize the parallel execution mode of user contexts
597 * Introduce configuration variables to control parallel execution:
598 - contexts/synchro: Synchronization mode to use when running
599 contexts in parallel (either futex, posix or busy_wait)
600 - contexts/parallel_threshold: Minimal number of user contexts
601 that must be part of a scheduling round to switch to parallel
602 execution mode (raw contexts only)
603 * Fix bugs that prevented to use suspend/resume along with
604 synchronization structures.
605 * Fix bugs in process termination that lead to invalid memory access
606 in very specific conditions.
609 * Introduce a parallel mode for the models (controlled by surf/nthreads
610 configuration item). In our tests, running the models in parallel
611 never lead to any speedups because they are so fast that the gain
612 of computing each model in parallel does not amortizes the
613 synchronization costs, even when ultra fast futexes are used.
614 This is released anyway because YMMV.
617 * Performance boost by using a swag internally to compute the set of
618 tasks that are finished and should constitute the return value of
622 * Enable it by default now that it is considered rather stable.
625 * Documentation of the tracing functions.
626 * Performance gains when tracing categorized/uncategorized resource
627 utilization by avoiding calls to get route when updating resource
628 variables. LMM constraints are being used instead.
629 * API changed to set task categories. Use MSG_task_set_category instead
630 of TRACE_msg_set_task_category, and SD_task_set_category instead
631 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
632 * Bugfix for graphicator, routes not correctly obtained, memory leaks
633 * Examples for link user variables added (see at examples/msg/tracing/)
634 * Deprecated function TRACE_msg_set_process_category completely removed
635 * Trace header updated according to the latest Paje file format
636 * Tracing network lazy updates, no longer obligate users to use full updates
637 * --cfg=tracing/platform:1 also registers power/bandwidth variables
638 * Experimental: let user code declare/set/push/pop application states for hosts
639 * API changed to allow the manual creation of graph configuration files
640 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
643 * Improve the API of Lua MSG bindings, using the Lua spirit.
644 * Each simulated process now lives in its own Lua world (globals are
645 automatically duplicated). It helps writing simulators. Will allow
646 to run Splay programs within SimGrid in the future.
647 * Add a Chord example in Lua, equivalent to the MSG one.
650 * Start the implementation of a solution to express temporal
651 properties, not only local assertions. This is still an
652 experimental work in progress, stay clear from it to be safe.
656 - Add new runtime parameters --help-logs and --help-log-categories
657 to display informations about supported logging parameters and
659 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
660 don't exists anymore.
661 * Mallocators: allow value NULL for the reset function.
663 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
664 create homogeneous dictionaries, where all the elements share the
665 same free function. Non homogeneous dictionaries will be
666 deprecated in the next release.
667 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
668 - Multi-level dictionaries are deprecated.
670 - new function xbt_dynar_search_or_negative() that is useful when
671 you have less than 2 million elements in your dynar and don't
672 want of the extra complexity of catching exceptions when the
673 element is not found.
675 - Make xbt_os_thread module (for thread portability) public.
676 Documentation is still to come, sorry.
678 - Cleanups and simplifications to make it maintainable again.
679 - Exotic features (such as memalign and valloc) were removed.
680 - The metadata were extended and improved so that the
681 model-checker becomes able to explore and inspect the heaps.
682 - This may induce a performance drop when enable_model-checking is
683 ON in cmake (even if it's not used in the simulation), but it is
684 necessary at this point to get MC working.
686 Turn model-checking OFF if simulation performance matters to you.
687 Not enabling it at runtime is not enough, disable it in cmake.
689 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
691 SimGrid (3.6.2) stable; urgency=low
693 The "Not coding new stuff allows to polish old things" release.
696 * New bindings to the NS3 packet level simulator (experimental)
697 * Use the raw (efficient) execution contexts instead of the sysv
698 (portable) ones when possible.
699 * libpcre is now mandatory in any cases since not using it led to
700 severe performance loss and possibly other issues
701 * Update the XML platforms:
702 - G5K: include the latest machine in Nancy
703 - GridPP and LCG: new platforms
704 * Documentation was partially updated, at least (more to come)
706 Bug fixes, cosmetics and small improvements
707 * Free terminated processes before the end of the simulation to avoid
708 exhausting the memory of users having very dynamic amount of
710 * Bug fix and cosmetics about canceling non-running tasks
711 * Bug fix about the dot loader's issues when using libcgraph
714 * Create an installer for windows with nsis (amd64 and win32)
715 - Add an hello world project to illustrate simgrid project creation.
716 - Embed libpcre into the Simgrid installer to avoid
717 its compilation burden
718 * The raw execution contexts should work on Apple now
719 * Port to Windows 64 bits
720 - Sysv contexts now have an implementation for this arch
721 - GRAS communication features now support this arch
722 * Drop support for borland compiler on windows
723 - this code was not maintained, and we kinda depend on gcc nowadays
724 * Fix portability issues on kfreebsd/gnu: build error about semaphores
725 * Fix portability issue on unstable ubuntu: linker became picky on
728 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
730 SimGrid (3.6.1) stable; urgency=low
732 The "Oops, we broke Macs too" release
735 * Fixed contexts detection so that raw ones are used when possible
736 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
737 leads to a strange error, with user code segfaulting sometimes when
738 the generated code is not perfectly aligned (which is not
739 controllable from the user side, depends on the amount of code)
742 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
744 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
746 SimGrid (3.6) stable; urgency=medium
748 The Summer Release, also known as the "OMG! They Killed Kenny!" version
751 * Bindings now constitute their own package, separated from the main one.
752 Rationale: reduce our maintenance nightmare by reducing the module coupling
753 They will soon be released on their own on gforge.
755 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
756 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
758 GRAS: It is not considered as stable anymore, but experimental. Sorry.
759 * It's not quite deprecated for now because we have no replacement,
760 but it may soon become the case.
763 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
764 * Fortran: New user-level cache variable to store the rank of the running
765 process. This improves performance by an order of magnitude.
766 * C: New coccinelle script to automatically locate and modify global and
767 local static variables.
768 * Improved SMPI network model with a sender-side gap to account for multiple
772 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
773 only say if a communication is finished, no matter whether it succeeded or
774 failed. You can call MSG_comm_get_status() to know the status of a finished
776 * New function MSG_task_dsend() to send a task and detach it. When a
777 communication is detached, you are never notified of its success or failure
778 and the memory is released automatically once it is finished. This function
779 is useful when you don't care about the end nor the success of a
781 * Change the prototypes of action replay. Sorry for inconvenience,
782 but this is really more efficient this way (and to adapt your code,
783 you just have to fix the initialization, that shouldn't be too long)
784 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
785 ever managed to do anything useful with it.
786 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
787 takes a dynar of communications. It returns immediately and gives the
788 index of a finished communication (if any).
789 * New example: a basic implementation of the Chord P2P algorithm.
792 * New model for multi-core CPUs. You can now use the core attribute to
793 precise the number of cores of a host. This is a basic model. Every
794 process running on the host receives at most the power provided in
795 the DTD (throughput<=power). Total throughput of process cannot exceed
797 * New peer tag. This peer tag creates a tiny AS comprising a host and a
798 router linked by an up-link and a down-link (possibly asymmetrical).
799 This kind of pattern allows to easily build last-mile model style platforms.
800 Aggregating such patterns in a rule-based AS is thus the technique of
801 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
802 * New model for Vivaldi routing. We transformed the Vivaldi network model
803 into a Vivaldi routing model (based on the rule-based model). This allows to
804 combine Vivaldi based latencies with last-mile platforms.
807 * Added a check for NaN of IEEE754 infinite in the double entries of
809 * Introduce a new context factory "raw", highly inspirated from the
810 ucontext factory, but using manually crafted functions in assembly to
811 do the work in an efficient manner.
812 * Allow to change the used context factory at run time, not only at
813 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
814 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
815 contexts at runtime (only with raw contexts or ucontexts).
816 * Completely rewrote this module to allow parallel execution of user
817 processes. Use --cfg=contexts/nthreads:N to execute user processes
818 with N parallel threads (the default is 1, meaning no parallelism).
819 * Allow to decide dynamically between sequential and parallel modes.
820 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
821 processes in parallel only when their number is greater than or equal to P
823 * Added a check for NaN of IEEE754 infinite in the double entries of
827 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
828 won't output the state of processes when interrupted with Ctrl-C
829 * Add a new function xbt_dynar_to_array that transforms a dynar into a
830 NULL-terminated array. This may solve backward compatibility issues
831 due to the change to return type of SD_simulate. See also:
832 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
833 * Add new macros with variable number of arguments.
834 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
835 - in xbt/asserts.h: xbt_assert
836 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
837 - in xbt/ex.h: THROWF and RETHROWF.
838 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
840 * Change xbt_die() to accept a format string with arguments, just like printf.
841 * New data structure: xbt_lib_t, like a dict but more general and with better
845 * New configuration options
846 Options triva/categorized and triva/uncategorized can be used to generate
847 graph configuration files for Triva visualization tool.
848 * Configuration option tracing/platform is renamed to tracing/categorized
849 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
850 * New TRACE_user_link_variable interface:
851 User provides the name of the link and the tracing variable to attach to it
852 * the declaration of tracing categories must be done after the environment
854 * simpler tracing interface, just one way to declare categories
855 TRACE_category or TRACE_category_with_color, it is up to you
856 * links in the trace file are again identified by their names
857 * trace contains the full platform hierarchy exactly as declared using the ASes
858 * Options tracing/msg/[task|process]:1 groups the process by hosts
859 for both cases, tasks and processes must have names that are unique during the simulation
860 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
861 * The experimental option tracing/msg/volume is deprecated
862 its functionality may be reincorporated if needed
864 The tracing generates a trace file with unordered timestamped events,
865 because of the way the core simulator (surf) works. A script available
866 at the tools directory (fix-paje-trace.sh) can be used to put the events
867 in order. We have changed the tracing so it can generate ordered timestamped
868 events in the final trace, but depending on the simulator (and how much time
869 is simulated) that can lead to a huge memory utilization. It is deactivated
870 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
873 * Define a SIMGRID_VERSION macro in simgrid_config.h.
874 - We are trying hard to keep the API stable, but it may happen that
875 some things change (we're a research project after all, not a
876 nuclear plant operating system). If such things should happen, you
877 could rely on that macro to adapt.
878 - current value: 30600 for 3.06.00, aka 3.6
879 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
880 a number that can be compared with SIMGRID_VERSION.
881 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
882 assertions and verbose/debug logging events are disabled at compile time.
884 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
886 SimGrid (3.5) stable; urgency=medium
889 * New feature to any SimGrid-based simulator: Model-Checking
890 Check SIN#1 for more details.
893 * New Model SMPI (three-interval linear regression for correction factors)
894 See RR-7426, available at http://hal.inria.fr/inria-00527150
895 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
896 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
897 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
898 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
899 * See also src/smpi/README
904 - Tracing API changes: TRACE_start and TRACE_end should not be called
905 by user-code. They are automatically called by simulators created
906 with SimDAG, MSG and SMPI if the toolkit is compiled with
907 tracing_enabled=ON. Categories declaration and utilization remain the
908 same for MSG and SimDag.
909 - A function was added to the tracing API to declare categories with
911 - TRACE_category_with_color (char *category, char *color)
912 where color must be in the following format
913 "%f %f %f", red, green, blue
914 and red, green, blue are float values in the interval [0, 1]
915 - User can specify NULL as color parameter, or continue calling
917 On that case, the tracing system will define random colors
918 - The following command-line options are supported:
919 --cfg=tracing/filename:msg.trace
920 --cfg=tracing:1 (activate tracing, needed to use others)
921 --cfg=tracing/platform:1 (categorized resource use)
922 --cfg=tracing/uncategorized:1 (uncategorized resource use)
923 --cfg=tracing/msg/task:1 (task creation)
924 --cfg=tracing/msg/process:1 (process creation, migration)
925 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
926 --cfg=tracing/smpi:1 (SMPI interface tracing)
927 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
928 - examples of examples/msg/tracing updated
930 - DAXLoader and DOTLoader functions can generate tasks with categories
931 - A new function to attribute a category to SD tasks:
932 TRACE_sd_set_task_category (SD_task_t task, char *category)
933 * Tracing the MPI interface implemented by SMPI
934 - Collective operations are traced with states
935 - Point-to-Point operations are traced with states/links
936 - Tracing activated by a parameter "-trace filename" passed
937 to smpirun during execution (considering that simgrid
938 is compiled with tracing enabled)
939 - To run the simulation with gdb, the simulator
940 accepts --cfg=tracing/smpi:1 to trace SMPI
941 - tesh files to check if smpi tracing is ok
942 - See examples/smpi/NAS/DT-trace
943 * GTNetS tracing re-worked
944 - adaptation to the tracing system of GTNets to cope
945 with modifications regarding the fullduplex mode
946 - new tesh files to check if gtnets tracing is ok
949 * Asynchronous communications through the functions:
950 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
951 * New function: MSG_load_platform_script()
952 to make possible using a lua script instead of XML files to set up platforms
953 * New function: MSG_set_function
954 to associate functions to processes, used when bypassing the parser
955 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
957 Platforms: Add some more examples in examples/platforms
958 * Grid'5000: see www.grid5000.fr
959 * *_30000_hosts.xml: various huge files [mainly scalability testing]
962 * Change the XML format. This is a very important modification. SimGrid
963 3.5 introduces a new hierarchical format based on the notion of
964 Autonomous Systems. Compatibility with old format is ensured
965 through the perl script provided in the install bin directory
966 bin/simgrid_update_xml.
967 It is now possible to build platforms with specific routing
968 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
969 connect several platforms together. We will try to provide soon
970 set of realistic platforms exploiting these properties (have a
971 look at examples/platforms/ for the moment).
972 * Take the opportunity of the XML format change to be a good XML citizen:
973 rename link:ctn to link_ctn and similar changes (also dealt with by
975 * Add a new routing scheme (rule-based) using regular expressions. It
976 enables to have an extremely low memory footprint when the
977 underlying routing is simple and can be compactly described. You
978 need to have libpcre4-dev (perl regular expressions) installed if
979 you want to use this routing scheme.
980 * Revive the cluster TAG and allow to easily and efficiently (both in
981 term of memory and speed) connect clusters together. Have a look
982 at teshsuite/simdag/platforms/ to see how this can be done. With
983 this tag, you can create clusters with thousands of tasks at no
984 cost (have a look at examples/platforms/).
985 Note: clusters are implemented as ASes, so there is no need for an
986 enclosing AS tag if you have only one cluster in your platform.
987 * Add new generic functions in the public interface that allows the user
988 to call SURF 'create_resource' methods from your code (same
989 functionality as the XML bypass mechanism but with a much lighter
991 * Add a new model (enabled through command line --cfg=network/model:SMPI)
992 that uses a piecewise linear approximation to produce better
993 results when exchanging small messages.
994 * Add a new parameter to handle correctly full duplex link and account
995 for interferences between uplink and downlink communications
996 (activate with --cfg=fullduplex:1).
999 * Rename the SD_READY (all dependencies are satisfied and task is
1000 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
1001 dependencies are satisfied) state.
1002 This prevents a confusion between the notion of "ready to schedule"
1003 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
1004 simulated" (SD_RUNNABLE) used by the simulation kernel.
1005 * Change the way a task is considered as ready. Instead of removing
1006 dependencies when a task is done, a counter is decreased. This way,
1007 it is always possible to reach ancestors thanks to the
1008 SD_taks_get_parents function (even after the end of the simulation.)
1009 * Change the return type of SD_Simulate from (SD_task_t*) into
1010 xbt_dynar_t. This function was in handling a dynar internally and
1011 converted it into a NULL terminated array for historical reasons.
1012 * New function SD_dotload(char*) to load a DAG described in dot
1013 format. This loader and the corresponding examples require the
1014 installation of the graphviz library.
1015 * Fix a bug in the management of tasks of size 0 in the surf network
1016 models. This problem was only visible with SIMDAG and you should
1017 thus disregard results produced with earlier versions if you
1018 relied on this feature (some tasks were blocked because of this).
1019 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
1020 even though your applications were doing only point-to-point
1021 communications and sequential computations. Now you can really use any
1022 model you want (of course, if you create real parallel tasks, which are
1023 not implemented in most models beside ptaskL07, this will abort).
1024 * Add an example that schedules a DAX on an heterogeneous platform
1025 using a Min-Min strategy.
1026 * New function SD_workstation_get_current_task() that returns the kind
1027 of task currently running on a workstation in the sequential access
1029 * Raise some warnings when unexecuted tasks remains at the end of the
1030 simulation. This is usually caused by cycles in the DAG.
1033 * New function: SIMIX_process_set_function() called by MSG_set_function
1034 * Change the underlying waiting queue in semaphores so that a process
1035 can wait on several of them simultaneously (as in waitany).
1036 * Fix the way to handle tokens in semaphores so that all access patterns
1037 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
1038 * kill the dirty pimple SIMIX_message_sizes_output()
1039 Please use (proper) visualization instead
1042 * New data container: setset (set of sets of elements)
1043 * New module: mmalloc (mapped malloc, allowing to have several
1044 independent segments of malloc)
1045 * New function: xbt_dict_cursor_set_data()
1046 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
1047 * New function: xbt_dynar_is_empty()
1048 * New function: xbt_fifo_get_last_item()
1049 * Fix xbt_dynar_shrink(): use the right element size.
1050 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
1051 uninitialized areas during expand.
1052 * Fix semaphores: previous implementation was severely broken.
1053 * Use library init/fini functions for our initialization.
1054 - you can use logs and other feature as soon as you want in your
1055 code (even before the xbt_init / MSG_init)
1056 - xbt_exit is now a no-op and produce a warning when used.
1059 * Port GRAS to new SIMIX mechanisms. This allows gras users to
1060 benefit from the latest improvement to the simulation kernel.
1061 * Kill measurement sockets for now. If you rely on them, sorry. This
1062 release is not for you. This feature will be reintroduced in the
1063 future, but we cannot delay the release any further.
1064 * New function: gras_msgtype_get_name().
1065 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
1066 * Fix (at last) the pmm example: it should not randomly fail anymore.
1068 Build chain: bug fixes and overall polishing
1069 * Cmake is now stable enough. Hence, we killed the autotools.
1070 * Port to windows ( TM :)
1071 * Fix the 'make install' target.
1072 No need to use 'make install-simgrid' anymore
1073 * Introduce a 'make dist' target compiling a *source* archive
1074 'make package' compiles a binary archive
1075 * Compile java files only on need
1076 * Add --cd and --setenv command line options to tesh
1077 * Out of source builds are not fully supported yet, but we are close
1078 * Enable supernovae and optimization flags by default for our users
1081 * Add layer to set up environment directly from lua, without XML.
1082 * The effect of gras_stub_generator can be achieved through
1083 lua too (check examples/gras/console/ping_generator.lua)
1085 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1087 SimGrid (3.4.1) stable; urgency=low
1089 The "Polishing easter eggs is probably a good idea" release.
1090 This is a bug fixes release only.
1094 * Fix a bug preventing the tasks from begin garbage collected.
1097 * Fix a bug occuring when a host involved in a communication fails.
1098 This was not detected properly by the other peer involved in the
1099 communication. Now, it's reported as a network error.
1102 * Warn the user about loop dependencies in data flow of DAX files
1103 * Obey the control-flow dependencies of DAX files
1106 * Add option "enable_smpi" allowing to not compile SMPI.
1107 Probably useful for the (Mac) users experiencing a build error here
1108 * Improve the detection of lua5.1 and ruby1.8
1110 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
1112 SimGrid (3.4) stable; urgency=low
1114 The "Easter in Cargese" release. Also known as (major changes):
1116 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
1117 ~> bindings were greatly improved
1118 ~> new tracing infrastructure for better visualization introduced
1120 * the "Welcome to configury modernity" release.
1121 ~> we switched from autotools to cmake, and improved our cdash
1124 A more detailled list of changes follow (full detail in svn log).
1126 Java Bindings: Various Cleanups
1127 * (install java-gcj-compat-dev on debian-like to use them)
1128 * Remove put/get: no need to export deprecated interface in Java
1129 Use send/receive instead.
1130 * Cleanup the examples and add a README per directory
1131 * Remove example autoDestination (that's the only way to go now)
1132 * Remove example explicitDestination (was a plain copy of basic)
1133 * Make JniException a runtime exception, so that there is no need to
1134 declare the fact that you may encounter such a beast. I guess that
1135 nobody will ever want to survive such error.
1136 * Create specific errors for each MSG case of failure:
1137 host failure, transfer failure, timeout, task cancelled
1138 * Cleanup the exceptions that may get thrown by each function
1139 * Other internal cleanups in Java bindings. Performance still bad :/
1140 Ruby and Lua Bindings: create them
1141 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
1142 * That's new and great, you should try them out.
1143 Same functionalities than Java bindings, only even less polished
1145 * Kill the useless "rate" argument of SD_task_get_execution_time()
1146 Everyone used to provide -1 as a value, it was not used, and the
1147 semantic of a possible use wasn't even clear.
1148 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
1149 either as comm costs or compute costs to mean that there is no
1150 such thing for that specific task.
1151 * Add a SD_task_set_name() function
1152 * Fix SD_task_unschedule() on typed tasks
1153 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
1154 * In DAX loader, accept useless 'level' attributes to <job> since
1155 LIGO DAGs have them (seem to be to ease graphical representation).
1157 * Add an example masterslave_mailbox.c using send/receive and not
1158 the deprecated put/get interface.
1159 * Kill the MSG_paje_output() function. It's a noop since 2 years.
1160 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
1162 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
1163 (declare MSG_USE_DEPRECATED to still have the old name)
1164 * Add a MSG_task_set_data() function
1165 * About trace replay (see examples/msg/actions):
1167 - Allow to work with splitted trace files for each process
1168 Give the specific trace file as argument of each process,
1169 and call MSG_action_trace_run(NULL)
1170 You can still have one merged file for all processes.
1171 - Fix implementation of collective operations
1172 * Allow task_execute() on 0-sized tasks (closes #10063)
1174 * This is the first release of SimGrid where SMPI is not considered
1175 beta anymore (even if some corners should still be improved)
1176 * Port over the new SIMIX_network submodule (internal refactoring)
1177 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
1178 * Implement more missing elements of the standard:
1180 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
1182 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
1183 MPI_Scan() MPI_Get_processor_name()
1184 - Added implementation of missing case for Alltoall (warning: it's
1185 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
1186 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
1187 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
1188 SMPI_MPI_Allgatherv()
1189 * Bug fixes include:
1190 - MPI_Waitsome() was broken
1191 - Allow relative includes in smpicc
1192 - Command line cfg argument 'reference_speed' was ignored...
1193 - Some functions did not properly lead to auto-benching of user code
1194 - smpicc passes -O2 by default (just like openmpi one)
1196 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
1197 * Bug fixes about timeouts during communications
1198 * add SIMIX_message_sizes_output() as a pimple to write to file the
1199 amount of messages per size. Use gnuplot to get histogram.
1200 Pimple because that's the only user-visible function of simix,
1201 defined directly in xbt.h (irk, sorry)
1203 - Add a SIMIX_sem_get_capacity() function
1204 - Fix interactions with processe resume/suspende
1205 - release_forever() was stupidly broken
1206 - Fix SIMIX_display_process_status() for processes in a semaphore
1207 - Make SIMIX_sem_block_onto() user-visible
1208 * Refactoring context stuff:
1209 - Use pseudo-OOP for better modularity
1210 - reimplement SIMIX_process_kill() without process_schedule() so
1211 that the latter can take as invariant that it is called from
1213 - Merge context_start into context_new for sake of simplicity
1215 * Add a Vivaldi network model, coded live during SUD'10 ;)
1216 * Rename configuration variables to start a hierarchy:
1217 o cpu_model -> cpu/model
1218 o network_model -> network/model
1219 o workstation_model -> workstation/model
1220 * New configuration variables:
1221 o network/bandwidth_factor: correction to bandwith
1222 o network/latency_factor: correction to latency
1223 o netwotk/weight_S: correction to the weight of competing streams
1224 * Add a long description to the models, that users can see with such
1225 argument on the command line: --cfg=cpu/model:help
1226 * --help-models display the long description of all known models
1228 * config: add the ability to set a default value after registration
1229 Does not override any previously set value (e.g. from cmd line)
1230 * dict: allow to have integer key and data.
1231 When so, you need to use the following functions
1232 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
1233 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
1234 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
1235 In contrary to regular dicts, the key is not malloced before copy.
1236 Mixing scalar and regular elements in the same dict is not tested
1238 * Allow to use xbt_dynar_shrink() to expend the dynar instead
1239 Tracing for Visualization:
1240 * SimGrid is now instrumented in order to generate a trace file for
1241 visualization analysis: to use it, need to compile SimGrid with the
1242 "tracing" option enabled, and instrument the program using SimGrid with
1243 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
1244 (among other functions).
1245 * The instrumentation only traces the platform utilization for now
1246 * Documentation to use the tracing functions and how to analyze the
1247 traces with the Triva tool is written.
1248 * More information about: SimGrid FAQ (in the section Tracing Simulations
1251 * We moved to cmake as default build system. Autotools support will
1252 be dropped soon. Check the FAQ for more info about how to use it.
1253 * Greatly improved our cdash/ctest interactions
1254 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
1255 * Added memory checking tests with valgrind; lot of memleak fixing.
1256 This may be the first release of simgrid with so few memory issues
1257 * Added code coverage tests.
1258 Our coverage is still improvable, but at least we see it on cdash.
1260 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
1262 SimGrid (3.3.4) stable; urgency=low
1264 The "Desktop Grid needs love too" release (also called Xmas release).
1266 Models improvements:
1267 * Major speedup in the maxmin system solving by using lazy evaluation
1268 Instead of solving completely the maxmin system at each iteration,
1269 only invalidate (and recompute) the modified parts.
1270 This new feature is enabled in default models but you can try to
1271 turn it on with "--cfg:maxmin-selective-update=1" for other models.
1272 * Cas01 IMproved as default CPU model
1273 This CPU model is the same Cas01 model, but it uses the
1274 maxmin-selective-update flag and a heap structure to manage
1275 actions on SURF kernel.
1276 It reduces the complexity to find the next action to finish and,
1277 consequently, it's faster than the old Cas01.
1278 This is the new default CPU model (Cas01).
1279 * Rename the old Cas01 model to Cas01_fullupdate
1280 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
1281 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
1282 * CpuTI (CPU Trace Integration)
1283 A new CPU model whose objective is simulate faster when using
1284 availability trace files.
1285 Instead of using a full featured, over engineered maxmin system for
1286 CPU modeling, this model does the pre-integration of traces files
1287 to calculate the amount of CPU power available, and so, executes
1288 faster than the old CPU models.
1289 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
1290 * Use LV08 as default network model since it gives better accuracy
1291 for small messages and shouldn't change things for big ones.
1292 Use --cfg=network_model:CM02 to get the previous behavior.
1295 ******************************************
1296 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
1297 ******************************************
1298 * The new CPU model may changes simulations!
1299 The point is that events occurring at the exact same timestamp
1300 are not scheduled in the same order with the old and new
1301 version. This may be enough to completely change the execution
1302 of simulations in some cases.
1303 * The new network model will change simulations!
1304 This new model is more realistic than the previous one, so you
1305 should consider redoing your old experiments with this model.
1306 Sorry for the inconvenience.
1309 * Introduce the supernovae compilation mode
1310 When compiled that way, the whole SimGrid (or almost) is put in a
1311 single compilation unit and compiled in one shoot.
1312 This is to help gcc which has difficulties to inline stuff from one
1314 The speedup seem to be above 15%, althrough more tests are needed on
1315 amd64 to confirm that gain.
1318 * Port of MSG's mailbox on top of SIMIX network
1319 The put/get mechanism was greatly simplified on the way.
1322 * New SIMIX network module. Provides:
1323 - Mailbox: rendez-vous mecanism to find with who you want to speak
1324 - Synchronous send/recv: easier and hopefully faster since the
1325 logic is handled in the maestro process directly now
1326 - Asynchronous send/recv: you dreamt of it? It's here now
1327 Too bad that nobody cared enough to propagate the change to MSG.
1328 * Add semaphores as SIMIX synchronization mechanism.
1331 * new function SD_daxload(char*) to load a DAX file
1332 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
1333 * Introduce typed tasks. Specify its kind and cost at creation.
1334 At scheduling, just give where it should be placed, and the cost
1335 for each involved resource is automatically computed.
1336 Existing constructors so far (more to come of course):
1337 - SD_task_create_comm_e2e() for end-to-end communication
1338 - SD_task_create_comp_seq() for sequential computation
1339 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
1340 * new function SD_task_dump() for debuging display
1341 * new function SD_task_dotty(task,FILE*) writing to file the info
1342 about the task in dotty format
1343 * SD_task_dependency_exists() can now cope with having one of its
1344 arguments NULL. If so, it tests whether the other argument has any
1346 * Add getters on list of preceding/following tasks:
1347 SD_task_get_parents(task) and SD_task_get_children(task)
1348 * Add getters on amount of workstations and list:
1349 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
1350 * Add getter on task kind: SD_task_get_kind(task)
1351 * Update the start_time and finish_time of tasks on completion/failure
1352 * Bugfix: Remove task from state swags when destroyed
1355 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
1358 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
1359 dynar with one separate thread per value of the dynar.
1360 * Change the prototype of xbt_thread_create(), sorry.
1361 Added a boolean parameter indicating whether we want to join this
1362 thread (used in SG only for now)
1363 * Implement xbt_thread_join and xbt_thread_yield in SG also.
1366 * GTNetS wrappers should now be usable again (and betterly tested too)
1367 * Fix a major regression from 3.2 where the timeout provided to
1368 MSG_task_put_with_timeout() was used as absolute time before which
1369 the comm should be done.
1370 * Start to fix the <cluster> tag.
1371 - Internal links should be good now (beside of the loopback, which
1372 use the private link instead)
1373 - paths to the external world is still rather broken
1374 - the <route:multi> tag is just broken. Actually that's brain-dead.
1375 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
1376 to make it less stupid
1377 ** Check your platform with teshsuite/simdag/platforms/flatifier **
1378 * Fix a source-level compatibility glitch from 3.2: after defining
1379 MSG_USE_DEPRECATED, you can use the old name
1380 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
1381 * Allow to compile from the SVN with automake 1.11
1382 * Fix some problems when using the "start_time" tag in deployment XMLs.
1383 * Fix #8569: XBT/synchro.h has redundant declarations
1384 * Fix #8563: MSG return values and exceptions
1385 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
1386 * Integrate patch #8636: Obey DESTDIR when installing documentation.
1387 Thanks to Robson Peixoto.
1388 * Fix a vicious bug in dictionaries inducing that some elements were
1389 not freed on xbt_dict_free()
1391 Portability report of this version:
1392 * Main portability targets:
1393 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
1394 on (amd64/i386/ia64)
1395 - mac leopard on i386
1396 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
1397 but nothing critical.
1398 * Other platforms: windows, AIX and others were not tested for this release
1400 Timing report of this version:
1401 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
1402 scenario parameters). From 8h to a few seconds in desktop grid settings.
1403 * Supernovae brings about 25% speedup on i386.
1405 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
1407 SimGrid (3.3.3) stable; urgency=low
1409 The "Need for Speed" release.
1411 The timings done to validate the 3.3.2 were faulty.
1412 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
1414 The problem was a conversion from a manually handled vector to
1415 xbt_dynar_t on the critical path.
1416 xbt_dynar_foreach calls functions, inducing stack management crap.
1418 We inlined these functions and xbt_dynar_foreach is now breath taking.
1419 We also inlined xbt_swag_belong on the way.
1421 Here are some approximate speedup measurements (on master/slaves
1422 simulations lasting between 10s and 20s each):
1423 3.3.1 -> 3.3.2: about same performance
1424 3.3.2 -> 3.3.3: 40% speedup
1425 3.3.1 -> 3.3.3: 40% speedup
1426 3.3.1 with inline patch -> 3.3.3: 30% speedup
1428 Our reading is that the refactoring which occurred in 3.3.2 made us
1429 suffer much more from the xbt_dynar_foreach low performance, but
1430 once we solved this, this refactoring proved to be very performance
1431 effective. From the 40% speedup, somehow, 10% are due to the
1432 inlining and 30% to the refactoring.
1434 That's a pitty that gcc cannot inline functions placed in other files
1435 alone. We have to choose between:
1436 - break the encapsulation (by putting private data structures and
1437 accessors in headers files to help gcc)
1438 - live with low performance
1439 - switch to a decent compiler such as icc (not quite possible).
1441 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
1443 SimGrid (3.3.2) stable; urgency=low
1445 The "Simplicity does not preceed complexity, but follows it" release.
1447 The main contributors of this release were (lexical order):
1448 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
1451 * Extract the routing logic into its own object.
1452 (was dupplicated in network.c and workstation_LV07.c;
1453 Allows to implement other ways of storing that info)
1454 => kill now useless network_card concept
1455 - Use dynar to represent routes (instead of void** + int*)
1456 - kill link_set (use surf_network_model->resource_set instead)
1457 - Add a command-line option to choose the routing schema to use
1458 - Add three new models:
1459 * Floyd (shortest path computed at initialization)
1460 * Dijikstra (shortest path recomputed all the time)
1461 * Cached Dijikstra (shortest path computed on need)
1462 All these models where contributed by Silas De Munck, and are
1463 described in his ICCS09 paper.
1465 * Simplify model declaration
1466 (less redirections, less function to write when defining a model)
1467 - Factorize stuff between models:
1470 surf_model_resource_set(model)
1471 surf_model_resource_by_name(model, name)
1472 - Unify the types of models in s_surf_model_t (using an union)
1473 - Embeed fields of common_public directly into s_surf_model_t
1474 - Rename model methods:
1475 action_free ~> action_unref
1476 action_change_state ~> action_state_set
1477 action_get_state ~> action_state_get
1478 - Change model methods into functions :
1479 (model)->common_public->action_use ~> surf_action_ref
1481 * Implement a generic resource; use it as ancestor to specific ones
1482 (allows to kill duplicated code in models)
1483 Drawback: timer command don't need no name nor properties;
1484 workstation_CLM03 don't need no properties
1485 (but I guess we can live with those few bytes wasted)
1487 * Improve the action object model
1488 - implement a constructor avoiding dupplicated code about field
1489 initialization in generic_action part.
1491 * Kill the SDP model: it has an external dependency, is deprecated
1492 in flavor of modern lmm models, and didn't compile since a while
1495 * Relocation of the context module from XBT to SIMIX.
1496 (the context were decoupled from the simix processes, duplicating a lot of code)
1497 => a lot of code was factorized
1498 - less overhead is introduced during scheduling
1499 - simpler API for the context factory
1500 - the logic for process creation,destruction and manipulation was simplified
1501 * Simplification of the s_smx_process_t data structure.
1502 => accesing the simix level data associated to a process is faster now,
1503 and the code is a lot more readable.
1506 * Implement some more MPI primitives:
1507 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
1508 -implementation: Bcast: flat or 2-ary tree (default),
1509 Barrier: 4-ary tree,
1511 Allreduce: Reduce then Bcast
1512 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
1513 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
1514 Alltoallv: flat tree, like ompi
1516 * Add support for optimized collectives (Bcast is now binomial by default)
1517 * Port smpirun and smpicc to OS X
1520 * Kill SD_link_get_properties: hard to maintain and makes very little sense
1521 Shout out if you used it.
1524 * Display the list of still queued messages in SG mode when existing
1528 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
1529 * Add xbt_graph_node_get_outedges() [Silas De Munck]
1530 * Add xbt_str_from_file(FILE*)
1531 * Add xbt_dict_get_key achieving a linear reverse search
1532 * Remove the context module
1534 Portability report of this version:
1535 * Main portability targets:
1536 - Linux(debian)/x86/context
1537 - Linux(debian)/x86/pthreads
1538 - Linux(debian)/amd64/context
1539 - Linux(debian)/amd64/pthreads
1540 On these, we still have the eratic breakages of gras/pmm and
1541 amok/saturate_sg reported in previous version. We still think
1542 that the tests are the cause of the fault, not the tested code.
1544 - Mac OSX Leopard/x86/context
1545 Still false negative in tesh autotesting.
1546 Smpi still fails, but this time because readlink does not accept -f
1547 Everything seems to work properly beside of that.
1550 - AIX version 5.3 (only tested contexts this time)
1551 Smpi still fails there because mktemp is not installed.
1552 Everything seems to work properly beside of that.
1554 I managed to compile it for the first time, but several breakages.
1555 Won't delay the release for this exotic platform.
1557 * Windows: it's still lagging behind. If you want to help, please
1560 Timing report of this version:
1561 This version seem to be more than 5% faster than 3.3.1 (on linux
1562 64bits with contextes). The gain is less than expected, we are
1563 investigating this for next release.
1565 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
1567 SimGrid (3.3.1) stable; urgency=low
1570 * Implement a --cfg-help to show existing configuration variables
1571 * Build chain do not require doxygen in maintainer mode
1574 * fix a bug on struct sizeof computation, which prevented the
1575 exchange of arrays of structs in some conditions
1576 - added a regression test about this in datadesc_usage
1577 * Allow the exchange of 0-long dynamic vectors.
1578 - for that, use -1 as indicator of dynamic size instead of 0
1579 - This implied to change any size from unsigned long to long,
1580 reducing a bit communication abilities, but I guess that with
1581 64bits being quite common, this is more than enough.
1582 - This also induce a protocol change, thus bumping network protocol
1583 version from 0 to 1 (if we have external users, we have to get
1584 clean on that point too ;)
1585 - added two regression tests about this in datadesc_usage
1586 * Be more verbose when propagating local exceptions
1587 This helps debugging.
1588 * Display the status of simulated processes when receiving SIGINT in
1592 * Allow to control the simulation from a trace file.
1593 New functions MSG_action_register() and MSG_action_trace_run()
1594 The first one allows to associate a function execution to each
1595 kind of action while the second one parses a trace file and
1596 triggers the corresponding actions within the system.
1597 For now, only a toy example is provided in examples/msg/actions
1598 * Add an exemple of process migration in examples/msg/migration
1599 * Fix a bug in task exchange which broke MSG_task_get_sender()
1600 Add a teshsuite regression test for that.
1601 [Bug: if MSG_task_get_sender() is called after sender exit,
1603 * Fix a bug which prevented suspend/resume to work properly
1604 * Display the status of simulated processes when receiving SIGINT
1605 This fixes a regression of v3.3. due to the introduction of SIMIX
1606 * Bug fixing in failure management:
1607 - trace could not start by a failure at time 0
1608 - failure during communications were not working
1611 * Add SIMIX_process_set_name() to change the name of the current
1612 process in the log messages.
1613 * Store smx_hosts in a dict since we only retrieve them by name
1614 * Move the configuration infrastructure to surf
1617 * Move the configuration infrastructure to surf
1620 * Massive internal cleanups:
1621 - Store internal structures on processes instead of hosts (allows
1622 to have more than one process per host, in addition of being more
1624 - Cleanup the initialization/finalization process
1625 - Kill a whole bunch of unneeded synchronization:
1626 processes run in exclusive manner within the simulator
1627 - Move queues from global tables to process data fields
1629 - now accept -platform and -hostfile arguments
1630 - Pass the right rank value to processes according to the hostfile
1631 * Compile the examples by default, and use them as regression tests
1632 * Implement MPI_Wtime()
1633 * Change the reference speed to a command line option
1636 * TCP_gamma can now be specified as command line option using
1637 --cfg=TCP_gamma:10000000.0
1638 * Change the --surf-path cmd line option into --cfg=path:
1641 * Also include strbuff from xbt.h public header
1642 * xbt_ex_display(): do not free the exception after displaying
1643 This allows to do more with the given exception afterward.
1644 Users should call xbt_ex_free() themselves.
1648 Portability report of this version:
1649 * Main portability targets:
1650 - Linux(debian)/x86/context
1651 - Linux(debian)/x86/pthreads
1652 - Linux(debian)/amd64/context
1653 - Linux(debian)/amd64/pthreads
1654 These targets fail about 1/10 of times on gras/pmm, but we believe
1655 that this is because of the test, not because of simgrid.
1656 amok/saturate_sg fails even more rarely, and the test may not be
1659 - Mac OSX Leopard/x86/context
1660 The test suite still spits tons of errors because some obscure
1661 force prevents us from removing the temporary directories
1662 arguing that they still contain some metadata I've never heard of.
1663 Smpi fails because seq is not installed.
1664 Everything seems to work properly beside of that.
1667 - AIX version 5.3 (both contexts and pthread)
1668 Smpi still fails there because mktemp is not installed.
1669 XML inclusions seems rosty on AIX.
1671 * Windows: it's still lagging behind. If you want to help, please
1674 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
1676 SimGrid (3.3) stable; urgency=high
1680 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
1681 [Malek Cherier & Mt]
1683 * Introduce the SIMIX module: factorize code between MSG and GRAS.
1686 Until now, GRAS were using MSG as an interface to SURF. It was
1687 quite difficult because both interface have several differences
1688 (MSG channels vs GRAS sockets were the most notable point).
1690 This also opens the gate to SMPI (which should occur soon) and speed
1691 up simulations by to 40% (even if it were not the main goal).
1693 **************************************
1694 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
1695 **************************************
1696 The point is that events occuring at the exact same timestamp are
1697 not scheduled in the same order with the old and new version. This
1698 may be enough to completely change the execution of simulations in
1699 some cases. Sorry for the inconvenience.
1701 * Cleanup and upgrade the XML format to push further scalability
1702 issues (check http://hal.inria.fr/inria-00256883/ for more info)
1704 * Improve the testing infrastructure with tesh. Now a very large part of
1705 the code is tested not only by being run but also by checking that the
1706 output match an expected output [Mt].
1708 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
1709 is really less memory-demanding, which should allow you to use
1710 larger files in SimGrid [AL].
1712 * Inform valgrind about our contextes, so that it becomes usable
1713 with the default (and more effecient) version of SimGrid
1714 [contributed by Sékou Diakite, many thanks]
1717 * Introduce a listener thread in charge of receiving incoming
1718 messages from the network. It allows to overlap communication and
1719 computation but most notably, it removes some stupid deadlocks due
1720 to the fact that so far, a process could not send and receive at
1721 the same time. This made most non trivial communication schema
1723 * Convert the PIDs from long int to int to match the MSG ones (and
1724 linux ones too) [Mt]
1725 * New function: gras_agent_spawn() to launch a new process on
1726 current host. Only working in simulation for now. [Mt]
1727 * New function: gras_os_hostport() returning a constant form (ie,
1728 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
1731 * Make the backtrace of exceptions more human readable [Mt]
1732 * New module: xbt/str [Mt]
1733 a ton of string utility functions (split, join, printf to a newly
1734 allocated buffer, trim, etc)
1735 * New module: xbt/hash [Mt]
1736 SHA1 hashing algorithm (more to come if needed)
1737 * New module: xbt/synchro [Mt]
1738 synchronization tools (mutex and conditions) working the same way
1739 in simulation and in real life (mainly useful for GRAS, but not
1741 * New module: xbt/queue [Mt]
1742 classical producer/consumer synchronization scheme
1743 * xbt_dynar_new_sync() creates a synchronized dynar. All access
1744 (using the classical functions will get serialized) [Mt]
1745 * Make dictionary internal table dynamic. No need to specify its size
1746 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
1748 * Make sure the log channels are organized as a tree under windows
1749 (because of ANSI C compatibility issue, any channel were child of
1750 root directly) [Mt].
1753 * Cleaned many thing in surf and fixed a few bugs [AL].
1754 * Add a nice command line configuration mechanism to compose models [AL].
1755 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
1756 the previous one (KCCFLN05). It relies on something that looks like
1757 a max-min sharing mechanism but cannot be written as such. A new solver
1758 was thus designed [AL].
1759 * Add a new solver to lmm. Based on Lagrange optimization and
1760 gradient-based descent, it enables to efficiently maximise systems s.a
1762 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
1764 This solver enables to propose two new network models for TCP Reno and
1765 TCP Vegas based on Low's work. These models still need to be fully
1766 tested though [Pedro Velho].
1769 * Bug fix in SD_simulate. Now the time bound given as argument is
1771 * Use the new parallel task model (ptask_L07) as default.
1772 * Use the SURF command line configuration mechanism.
1773 * 0-size tasks (for synchronization) should now work.
1775 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
1777 SimGrid (3.2) stable; urgency=high
1781 We still experience issues on this platform, but we believe that at
1782 least MSG is usable.
1784 GRAS API BREAKAGE (for simplification purpose, sorry):
1785 * the gras_msgtype_by_name is not used anymore. Instead of
1786 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
1787 you can write (and must)
1788 gras_msg_send(toserver, "request", &request);
1789 - If you still want to pass a gras_msgtype_t to the function (to cache
1790 the type and avoid the lookup time), use the gras_msg_send_() variant.
1791 - Impacted functions:
1792 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
1793 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
1794 * The callbacks are now expected to return 0 when everything went well
1795 (just like the main() function)
1797 GRAS new features and improvements:
1798 * New module mecanism where user code can use per process globals [Mt]
1799 This is similar to gras_userdata_*() functions, but for libraries. It
1800 factorize some code developped over and over in the examples and AMOK.
1801 It has still to be documented and used (only amok/peermanagement is
1803 * Fix a vicious bug in the TCP buffering mecanism which leaded to message
1804 loss when they were small enough to fit into the buffer and sent quickly
1805 enough so that they can all get received in one shoot.
1806 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
1807 if not found. Use the *_or_null() variant for the old semantic.
1808 * In gras_msg_handle, do not discard messages without callback.
1809 They are probably messages to be explicitly awaited later (ie, proofs of
1810 mis-synchronization in userland since they are sent before being awaited)
1811 No big deal usually.
1812 * gras_socket_meas_send/recv: semantic changed!
1813 The numerical arguments used to be (1) the total amount of data to send
1814 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
1815 messages. This was need for the fool willing to send more than MAXINT
1816 bytes on quite fat pipes.
1819 * Do really rename the hostmanagement module to peermanagement. [Mt]
1820 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
1821 but this is rather new and this was documented in the module
1822 documentation (poor excuses, I admit)
1823 * Bandwidth measurement semantic changed! This follows the changes to
1824 gras_socket_meas_send/recv explained above.
1827 * A sequential mode has been added to the workstations. When a workstation
1828 is in sequential mode, it can execute only one task, and the other tasks
1829 are waiting in a FIFO. [Christophe Thiery]
1832 * The KCCFLN05 workstation model now handles parallel tasks. It is the
1833 model for SIMDAG. [Christophe Thiery]
1834 * Bug fix in the maxmin solver: Some values were close to 0 instead of
1835 equal to 0, which caused some bad behaviors in
1836 saturated_constraint_set_update. I now use a threshold mechanism like in
1840 * When running manually src/testall, you select specific units [Mt]
1841 testall is the result of our cunit mecanism, and should replace all
1842 the scripty thingy around since bash don't run easily on billware.
1844 * A mallocator system has been added. [Christophe Thiery]
1845 Mallocators allow you to recycle your unused objects instead of freeing them
1846 and allocating new ones.
1848 Documentation update:
1849 * FAQ reworking + New FAQs:
1850 - "Valgrind spits tons of errors!" [Mt]
1851 - "How to repport bugs" [Mt]
1852 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
1853 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
1854 - Communication time measurement within MSG [AL]
1855 - I experience weird communication times when I change the latency [AL]
1856 * GRAS tutorial [Mt]
1858 - an introduction to the framework and to the used communication model
1859 - an initiatic tour introducing the most proheminent features:
1861 . Lesson 0: Installing GRAS
1862 . Lesson 1: Setting up your own project
1863 o Part 2: Message passing
1864 . Lesson 2: Exchanging simple messages
1865 . Lesson 3: Passing arguments to the processes (in SG)
1866 . Lesson 4: Attaching callbacks to messages
1867 . Lesson 5: Using globals in processes
1868 . Lesson 6: Logging informations properly
1869 . Lesson 7: Using internal timers
1870 . Lesson 8: Handling errors through exceptions
1871 . Lesson 9: Exchanging simple data
1872 . Lesson 10: Remote Procedure Calling (RPC)
1873 . Lesson 11: Explicitely waiting for messages
1874 . Recapping of message passing features in GRAS
1875 - A HOWTO section containing:
1876 o HOWTO design a GRAS application
1877 More are due, of course. They will come latter. In the meanwhile, you can
1878 check the examples which are still here.
1880 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
1882 SimGrid (3.1) stable; urgency=high
1886 There was a stack corruption somewhere, visible only when optimizing
1887 with these versions. [Vince]
1890 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
1891 module that enabled to play with Directed Acyclic Graphs. It is built
1892 directly on top of SURF and provides an API rather close to the old
1893 SG. Some old codes using SG are currently under rewrite to check that
1894 all needful functions are provided. [Christophe Thiery]
1897 * Complete rewrite of the KCCFLN05 workstation model. It is now an
1898 extension of the classical CLM03 model that gracefully handles
1899 failures. This is now the default model for MSG and GRAS. It doesn't
1900 handle parallel tasks yet though. [AL]
1901 * Bug fix: Weights were not correctly set in the network part.
1902 WARNING: This may have resulted in incorrect results with simulations
1903 where there are more than one flow on a given link. [AL]
1906 * After a (long ?) discussion on simgrid-devel, we have decided that the
1907 convention we had on units was stupid. That is why it has been decided
1908 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
1909 WARNING : This means that all previous platform files will not work as
1910 such with this version! A warning is issued to ask users to update
1912 A conversion script can be found in the contrib module of the CVS, under
1913 the name contrib/platform_generation/surfxml_update.pl [MQ]
1916 * Bug fix: Processes were started in reverse order, wrt deployment file.
1917 WARNING: if your code relies on this bug, please fix it. [AL]
1918 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
1919 being executed on two different locations. [AL]
1920 * Bug fix: Failures are now better supported thanks to Derrick's tests
1921 (there was many failure situations I hadn't thought of and that weren't
1922 correctly handled). [AL]
1923 * New function: MSG_host_is_avail indicates you whether a given m_host_t
1927 * New! a real RPC mecanism, as it ought to be since too long. [MQ]
1928 Exception occurring on server-side are propagated back to client (!).
1930 API CHANGE: the callback changed their prototype. Change:
1931 int my_handler(gras_socket_t expeditor, void *payload_data) {
1933 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
1934 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
1936 * New! function: gras_msg_handleall to deal with all messages arriving
1937 within a given period.
1938 * New! function: gras_socket_server_range to get a server socket in a
1939 range of port numbers (ease to avoid port number conflicts) [MQ]
1940 * New! gras processes display their backtrace when they get a SIGUSR1
1941 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
1942 Sweet to debug RL processes [MQ]
1946 - Do not force experiment sizes to be expressed in kb, or it becomes
1947 impossible to measure the latency this way (needs one byte-long tests)
1948 WARNING: this changes the amok_bw_* function semantic. [MQ]
1949 - Implements the link saturation stuff. [MQ]
1950 * Peer management module:
1951 New! module factorizing code that we wrote over and over [MQ].
1954 * New module: cunit (my jUnit implementation in ansi C) [MQ]
1955 - Test units are placed directly into the library code, they get extracted
1956 automatically and placed into the src/testall binary.
1957 - Convert most of the XBT tests to this system.
1958 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
1959 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
1960 live in the same C code. This required to change a little bit the API
1961 of surfxml parsing but shouldn't be an issue for end-users. [AL]
1962 * New module: sparse graph structure with basic algorithms (this is work
1963 in progress and the API is not considered to be frozen yet). [AL]
1964 * Display more information on backtraces: source line & function names are
1965 now displayed just like valgrind does (rely on addr2line tool) [MQ]
1966 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
1967 * Reworked a little bit some #include statements to load only required
1968 headers. Some user code that relied on SimGrid to include stdlib or
1969 stdio may need to include it by themselves. [AL]
1970 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
1972 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
1973 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
1974 but I guess that almost nobody used those parts. [MQ]
1976 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
1978 SimGrid (3.0.1) stable; urgency=low
1981 * Unfortunately, I had missed 5 misnamed functions:
1982 xbt_fifo_item_t xbt_fifo_newitem(void);
1983 void xbt_fifo_freeitem(xbt_fifo_item_t);
1984 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
1985 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
1986 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
1987 They're now deprecated. Please use their new versions:
1988 xbt_fifo_item_t xbt_fifo_new_item(void);
1989 void xbt_fifo_free_item(xbt_fifo_item_t);
1990 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
1991 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
1992 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
1994 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
1995 * Documentation: xbt_log module unmercifully reworked [MQ]
1996 * Bugfix: there was a problem with the ending of contexts with
1997 the pthread backend. It caused some weird deadlock or behavior
1998 depending on the pthread implementation. [AL]
1999 * Bugfix: get the exceptions raised in the simulator repport where
2000 and why they come from when they are not catched in time [AL, MQ]
2003 * Bugfix: Do repport the error when two non-connected hosts try to
2004 exchange data (Thanks to Flavien for stumbling into this one) [AL]
2007 * Add additionnal checkings on communications. Assert that two
2008 communicating hosts are connected by a set of links... [AL]
2011 * Add additionnal checkings on channel values in communication [AL]
2012 * New: MSG_task_get_source to see on which host a task was generated [HC]
2013 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
2014 the number of tasks waiting to be received on channel and sent
2016 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
2017 waits for the first task coming from a given host.. [AL]
2019 GRAS new functionnalities: [MQ]
2020 * Enhance the parsing macro to allow the size of multidimentional objects
2021 to be given thru annotations.
2022 * New example (and documentation): Matrix Multiplication a la RPC
2023 (as when I was young!) and fix a bunch of bugs found on the way.
2025 GRAS performance improvements: [MQ]
2027 * Reduce the amount of cbps creation/destruction by making it static to
2028 datadesc_send/recv() and using a (newly created) cbps_reset (based on
2031 * Change libdata to a set so that we can search for stuff by ID (and thus
2032 reduce the insane amount of dict lookups)
2035 * Actually implement gras_datadesc_copy() so that we don't have to mimick
2036 RL communication on top of SG since it's so uneffective.
2037 It may also be used for inter-thread communication in RL, one day.
2038 * Use gras_datadesc_copy() to exchange messages on top of SG
2040 - improve message exchange performance on top of SG
2041 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
2042 * Don't exchange on the network the size of the used part of buffer,
2043 instead, specify the possible buffer size to read().
2045 - reduces the amount of read/write calls (one pair per exchange)
2046 - reduces the amount of exchanged data (the size)
2047 - allows to retrieve all arrived data on receiver side, if we don't need
2048 it right now (subsequent read will peek the buffer)
2049 - allows the receiver to proceed with the begining of the stream before
2050 everything is arrived
2051 - make it possible to build an iov transport (using readv/writev)
2053 - take care of the data with non-stable storage (like stacked data),
2055 * If possible, TCP send uses vector I/O (when writev() is here)
2056 - Don't use it for receive since we send data sizes and data on the
2057 same stream, so we wouldn't be able to chain large amount of chunks
2058 before having to flush the stuff to read the size.
2059 * Rework the transport plugin mecanism to simplify it and reduce the
2060 amount of pointer dereferencement when searching for the right function
2063 * I guess that now, we do almost as few system calls as possible while
2064 doing as few data copy as possible.
2066 To improve it further, we could try to send all the sizes first and then
2067 all the data (to use iov on receiving size), but it's only a partial
2068 solution: when you have 2 dimensional data, the sizes of the second
2069 dimension is data of the first dimension, so you need 3 streams.
2071 I'm not sure the potential performance gains justify the coding burden.
2073 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
2075 SimGrid (3.00) stable; urgency=high
2078 * New! Give the possibility to hijack the surf parser and thus bypass
2079 MSG_create_environment and MSG_launch_application. Have a look at
2080 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
2082 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
2084 SimGrid (2.96) unstable; urgency=low
2089 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
2090 This deprecates the xbt_error_t mecanisms.
2091 It modifies (simplifies) all XBT and GRAS API.
2092 MSG API keeps unchanged (exceptions raised by XBT are catched from
2093 within MSG and masked with existing error handling facilities)
2096 * New! Add a FATPIPE model. [AL]
2097 * New! Add a parallel task model. [AL]
2098 * New! Add automatically a loopback interface (in the default
2099 network model) if none was precised.
2102 * Bugfix: MSG_process_resume now works with the current running process.
2104 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
2105 * Modification of MSG_task_get_compute_duration. Once a task has been
2106 processed, the value returned by this function is now equal to 0. [AL]
2107 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
2108 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
2109 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
2110 of a m_task. For now, MSG_task_cancel only works with computation
2112 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
2113 of the processor (in Mflop/s) regardless of the current load on the
2115 * API Change: use proper naming convention for MSG_getClock and
2116 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
2118 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
2119 This function changes the priority of a computation task. This priority
2120 doesn't affect the transfer rate. A priority of 2 will make a task
2121 receive two times more cpu power than the other ones. This function
2122 has been added to suit the needs of Nguyen The Loc and hasn't been that
2123 much tested yet. So if it fails, please report it and send me your code.
2125 * API Change: removed all functions and types that were marked "deprecated"
2126 since many months. Renamed MSG_global_init_args to MSG_global_init.
2128 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
2130 SimGrid (2.95) unstable; urgency=low
2133 * Steal some nice code to GNU pth to fix context detection and usage [AL]
2134 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
2135 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
2138 * Bugfix: Allow absolute paths for platform description files [MQ]
2139 * Bugfix: do free the variables after use. Leads to drastic performance
2141 * Implement max_duration (ie, timeouts) on resources [AL]
2144 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
2146 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
2147 the needed support (timeouts) [AL]
2150 * Implement measurement sockets. You can now get the bandwidth between two
2151 hosts thanks to AMOK (see below). [MQ]
2152 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
2153 dynar over the network (yeah) [MQ]
2154 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
2155 * simple/static token-ring example. [Alexandre Colucci and MQ]
2156 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
2157 in place before [MQ]
2160 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
2161 type parsing. "short" and "long" modifiers were also ignored; other
2162 modifier (such as reference level) are still ignored. [MQ]
2163 * Embeed the buffer size within the buffer itself on SG. [MQ]
2164 That way, send() are atomic and cannot get intermixed anymore (at least
2165 the ones which are less than 100k; bigger messages still have the issue)
2166 * Array size pushed by the field, not by the field type (or each
2167 and every long int will push stuff to the cbps) [MQ]
2168 * use select() to sleep since it allows to portably sleep less than one
2171 GRAS (minor cleanups)
2172 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
2175 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
2176 * type category 'ignored' killed as it was never used and were difficult
2178 * whether a type can cycle or not is now a flag, leaving room for more
2179 flags (as "ignored", if we feel the need one day ;)
2180 * Rename raw sockets to measurement sockets since "raw" has another
2181 meaning in networking community.
2184 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
2185 and offers features not belonging to GRAS but that most applications
2186 need. One day, it may be a set of plugins loadable at runtime.
2187 * New module: bandwidth
2188 bandwidth measurement between arbitrary nodes running this module. [MQ]
2190 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
2192 SimGrid (2.94) unstable; urgency=low
2194 The first beta release of SimGrid 3 !
2198 * Update the main page and the FAQ. Adding references to gforge.
2201 * Add a gras_os_getpid function.
2204 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
2205 * Extend the logs so that they also print PID, hostname, date, ... if
2207 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
2208 and kill the old version which were in testsuite/
2209 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
2213 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
2214 for users. Instead, each programming environment (GRAS, MSG,...) use it
2215 when needed to provide such a feature to users.
2216 Don't shortcut the mecanism or you will also shortcut the virtualization
2217 you need on the simulator.
2221 * Cleanups in configury with regard to compile optimization/warning flags.
2222 Also add -fno-loop-optimize to any powerpc since it's the optimization
2223 killing gcc (< 3.4.0).
2224 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
2225 needed by MSG examples complications
2226 * Borrow configury beautifications from PHP
2229 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
2230 warning (thanks loris for stumbling into this one).
2231 * Bugfix: stop loading private headers (gras_config.h) from the public
2235 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
2236 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
2237 RL would imply a DNS resolver, which is *hard* to do in a portable way
2238 (and therefore delayed).
2239 * Implement a real timer mecanism and use it in timing macros. This allows
2240 to avoid rounding errors and get a 0.000005 sec precision in timing
2241 macros. While I was at it, various cleanups:
2242 - allow to declare more than one timed section per file (fix a stupid bug)
2243 - move some private declaration to the right place
2244 - merge conditional execution and timing macros into emulation module
2245 - document the module
2246 - make sure the module cleanups its mess on gras_exit
2247 * Documentation improvements:
2248 - (new) how to compile applications using GRAS
2249 - (new) emulation support (timing macros)
2251 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
2253 SimGrid (2.93) unstable; urgency=low
2255 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
2258 - Use Paje properly where used. Still to be sanitized properly.
2259 - Portability fix: Add an implementation of the contexts using pthread
2263 - Add xbt_procname(): returns the name of the current process.
2264 Use it to show the current process's name in all logging.
2266 - fix detection of older flex version and the reaction, since we do
2267 depend on modern ones (we use lex_destroy)
2268 - Better separation of SG and RL in the libs: remove all simulation code
2269 from libgras. As a result, this lib is now only 200k when stripped.
2270 Some of the xbt modules may also be duplicated (two sets and such) and
2271 should be cleaned/killed before SG3.
2272 - Insist on using xlC on AIX because of weird problems involving gcc there.
2273 - Cleanup the make remote stuff. This is now done by scripts
2274 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
2275 mainly for our private use, but we're working on changing them to user
2278 - Bugfix: flush the socket on close only if there is some *output*.
2279 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
2281 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
2284 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
2286 SimGrid (2.92) unstable; urgency=low
2288 Alpha 3 on the path to SimGrid 3
2292 - New! First try of benchmarking macros.
2293 - New! First try so that gras_stub_generator generate deployment and
2294 remote compilation helpers.
2296 - Bugfix: Initialization fix in msg_test.
2300 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
2302 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
2304 - API Change: gras_os_sleep to take the amount of seconds as a double.
2305 Accepting an int was error prone since it was the only location where
2306 seconds were coded as such. It leaded to damn rounding errors.
2307 - Bugfix: Hard to belive that timers ever worked before this.
2309 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
2311 SimGrid (2.91) unstable; urgency=low
2313 Alpha 2 on the path to SimGrid 3
2317 - Bug fix in the lmm_solver.
2319 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
2320 through the function MSG_paje_output.
2321 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
2322 - It is possible to bound the rate of a communication in MSG with
2323 MSG_task_put_bounded() (was already in the previous version but I had forgotten
2324 to write it in the changelog).
2325 - Bug fix to let GRAS run on top of MSG until we move it directly on top
2330 - Various cleanups to the autotools stuff
2331 - Begin to move Gras examples to examples/gras/
2332 - Let make distcheck work again (yeah!)
2334 - documentation overhauled using doxygen.
2335 gtk-doc-tools is dead in SimGrid now.
2336 - Automatically extract all existing logging categories, and add the list
2337 to the documentation (long standing one, to say the less)
2339 - Cleanup the known architecture table. Reorder the entries to group what
2340 should be, and use a more consistent naming scheme.
2341 (some of the test dataset are still to be regenerated)
2342 - New! Allow library to register globals on each process just as userdata
2344 This is implemented using a xbt_dict and not a xbt_set, so we loose the
2345 lookup time (for now).
2346 Use it in msg and trp.
2347 This cleans a lot the internals and helps enforcing privacy of the
2348 headers between the gras components.
2349 - New! Add a timer mechanism, not unlike cron(8) and at(1).
2350 - Bugfix: gras_os_time was delirious in RL.
2351 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
2353 - Reenable GRAS now that it works.
2355 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
2357 SimGrid (2.90) unstable; urgency=low
2359 Alpha 1 on the path to SimGrid 3
2361 * It is a long time since the last release of SimGrid. I'm sorry about
2362 that but as I had told you, I was rewriting a lot of things. I apologize
2363 to those who had been reporting bugs to me and that I had not answered.
2364 If your bug is still in the new version, please tell me. Here is a
2365 summary of the main changes.
2367 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
2368 lead by Martin Quinson. As a consequence SimGrid gains a lot in
2369 portability, speed, and a lot more but you'll figure it out later.
2370 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
2371 I wanted to release the new MSG as soon as possible and I have
2372 broken GRAS, which is the reason why, for now, only MSG is fully
2373 functional. A laconic description of these projects is available
2374 in the documentation.
2376 * REVOLUTION 2: I have removed SG and I am now using a new simulation
2377 kernel optimized for our needs (called SURF but only the developers
2378 should use it). Hence, MSG is now roughly 30 times faster and I think
2379 that by rewriting a little bit MSG, I could event speed it up a little
2380 bit more. Beside the gain in speed, it is also much easier to encode a
2381 new platform model with SURF than it was with SG. More to come...
2383 * REVOLUTION 3: I have tried to change a little as possible the API of
2384 MSG but a few things really had to disappear. The main differences
2385 with the previous version are :
2386 1) no more m_links_t and the corresponding functions. Platforms are
2387 directly read from a XML description and cannot be hard-coded
2388 anymore. The same format is used for application deployment
2389 description. The new format is described in the documentation.
2390 Have a look in tools/platform_generation. There is a tiny script
2391 that converts from the old platform format to the new one. Concerning
2392 the application deployment format, parsing the old one is tricky.
2393 I think most of you should however be able to convert your files. If
2394 it is really an issue, I can write a C code that does the conversion.
2396 2) the toolbox tbx does not exist anymore. We now have a library
2397 with much more data-structures but without the hash-tables (we have
2398 dictionaries that are much faster).
2400 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
2402 *****************************************************************************
2403 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
2404 * don't feel like converting the oldies. (Mt) *
2405 *****************************************************************************
2408 Version 2.90: "the long awaited one"
2409 - Finished rewriting and debugging MSG. Rewrote the documentation.
2410 - disable GRAS for now since it needs to be ported to the newest SG
2413 - Finish the port to windows (using mingw32 for cross-compile)
2416 - Main loop and datastructures of SURF. A cpu resource object is
2417 functional. Surf can thus be used to create cpu's with variable
2418 performance on which you can execute some actions.
2420 2004-11-15 Martin Quinson
2421 - Port to ARM. Simply added the alignment and size descriptions. Should
2422 work, but the ARM machines are so slow that I didn't had the opportunity
2423 to 'make check' over there yet.
2425 2004-11-15 Arnaud Legrand
2426 - Trace manager now written. It uses a heap structure and is therefore
2427 expected to be efficient. It may however be speeded up (particularly
2428 when many events occur at the same date) by using red and black
2429 trees. One day maybe...
2430 - Max-min linear system solver written. It uses a sparse matrix
2431 structure taking advantage of its expected use. Most operations are
2432 O(1) and free/calloc are called as few as possible. The computation of
2433 the minimum could however be improved by using a red and black tree
2436 2004-11-03 Arnaud Legrand
2437 - Rename every gras_* function that was in xbt/ to its xbt_
2439 - Add a heap and a doubly-linked list to xbt
2440 - Added a dichotomy to the dictionaries. make check works as well before
2441 so I assume that the patch is correct. I do not know however if things
2442 run effectively faster than before now. :)
2444 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
2445 SimGrid, and the version number is bumped to 2.x
2447 2004-10-29 Martin Quinson
2448 - Introduction of the remote errors.
2449 They are the result of a RMI/RPC on the remote machine.
2450 ErrCodes being scalar values, you can't get the host on which those
2451 errors did happen. Extending the error mechanism as in Gnome is possible.
2452 No idea yet whether it is a good idea.
2454 2004-10-28 Martin Quinson
2455 - Interface revolution: the Starred Structure Eradication.
2456 I used to do typedef struct {} toto_t; and then handle *toto_t.
2457 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
2458 - ???_t is a valid type (builded with typedef)
2459 - s_toto_t is a structure (access to fields with .)
2460 - s_toto is a structure needing 'struct' keyword to be used
2461 - e_toto_t is an enum
2462 - toto_t is an 'object' (struct*)
2464 typedef struct s_toto {} s_toto_t, *toto_t;
2465 typedef enum {} e_toto_t;
2466 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
2467 s_toto_t) is private.
2469 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
2470 so that it can set the variable to NULL. It was so for dicts and sets,
2471 it changed for dynars.
2473 - Fix a bunch of memleaks in dict_remove
2474 - Fix a bug in sg/server_socket opening: it failed all the time.
2476 2004-10-07 Martin Quinson
2477 - Speed up dynar lookup operation a bit.
2479 gras_dynar_get is dead.
2481 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
2482 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
2483 (which gives you the address of the stored data).
2485 gras_dynar_get_as is an helpful macro which allows you to retrieve a
2486 copy of the data using an affectation to do the job and not a memcpy.
2488 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
2489 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
2491 It does not really speedup the dynar test because they are
2492 setting elements all the time (and look them seldom). But the dict does
2493 far more lookup than setting.
2495 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
2497 2004-10-05 Martin Quinson
2498 - Allow to (en/dis)able the cycle detection at run time.
2500 Whether we should check for cycle or not is now a property of each
2501 datatype. When you think there may be some cycle, use datadesc_cycle_set.
2502 datadesc_cycle_unset allow to remove this property when previously set.
2504 Note that the cycle detection is off by default since it impacts the
2505 performance. Watch the data you feed GRAS with ;)
2507 This property is hereditary. Any element embedded in a structure having it
2508 set have it set for the time of this data exchange.
2510 You should set it both on sender and receiver side. If you don't set it on
2511 sender side, it will enter an endless loop. If you forget on receiver
2512 side, the cycles won't be recreated after communication.
2514 - Header reorganization.
2515 Kill gras_private.h, each submodule must load the headers it needs.
2517 2004-10-04 Martin Quinson
2518 - Interface revolution: do not try to survive to malloc failure.
2520 Now, gras_malloc and friends call gras_abort() on failure.
2521 As a conclusion, malloc_error is not a valid error anymore, and all
2522 functions for which it was the only gras_error_t return value are
2523 changed. They now return void, or there result directly.
2524 This simplify the API a lot.
2526 2004-09-29 Martin Quinson
2527 - Re-enable raw sockets.
2528 Created by gras_socket_{client,server}_ext;
2529 Used with gras_raw_{send,recv}
2532 It should allow to kill the last bits of gras first version soon.
2534 This is not completely satisfactory yet (duplicate code with
2535 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
2538 - Simplify transport plugin (internal) interface by not passing any
2539 argument to _server and _client, but embedding them in the socket
2542 2004-09-28 Martin Quinson
2543 - Finish the port to AIX.
2544 autoconf was my problem (segfault within the malloc replacement
2545 function. No idea why)
2547 2004-09-16 Martin Quinson
2548 - Fix some size_t madness on 64bit architectures.
2550 2004-09-08 Martin Quinson
2551 - Reduce the number of system headers loaded, overload some more system
2552 calls (such as malloc to cast the result of the system one, and work
2554 - Fix and reintroduce the config support
2556 2004-09-07 Martin Quinson
2557 - Source code reorganization to allow Arnaud to surf all over there.
2558 - Allow to document the logging categories.
2559 - Remove all uppercase from logging categories and useless cleanup in names.
2561 2004-08-18 Martin Quinson
2562 Version 0.6.2 (protocol not changed; API changed)
2563 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
2564 gras_error_t), and NULL when not found. Functions expecting a msgtype
2565 as argument (msg_wait; msg_send) deal with NULL argument by providing a
2566 hopefully usefull message.
2567 - Portability to prehistoric sparcs again
2569 2004-08-17 Martin Quinson
2570 Version 0.6.1 (protocol not changed; ABI not changed)
2571 - prealloc some buffers to speed things up
2573 2004-08-11 Martin Quinson
2574 Version 0.6 (protocol not changed; ABI expended)
2575 - The parsing macro can deal with the references, provided that you add
2576 the relevant annotations (using GRAS_ANNOTE(size,field_name))
2578 2004-08-09 Martin Quinson
2579 Version 0.5 (protocol not changed; ABI changed)
2580 - Allow to off turn the cycle detection code in data exchange at
2581 compilation time. It should be at run time, but I'm short of time (and
2582 the config stuff is still broken). That way, we keep dict out of the
2583 critical path, which is good because the performance is poor:
2584 - search not dichotomial yet
2585 - dynar give no way to access their content and memcpy everytime
2586 - In composed data description (struct, ref and so on), stop foolness of
2587 keeping the subtype's ID, but store the type itself. This keeps sets out
2588 of the critical path, which is good since they rely on dynar and
2589 dictionnaries. The only loose of that is that we cannot detect the
2590 redeclaration of a structure/union with another content (but I'm not sure
2591 the code detected well this error before anyway). We still can detect
2592 the redefinition discrepancy for the other types.
2593 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
2594 it breaks the code because of type-punning used all over the place).
2595 This breaks on all non-gcc architectures (for now).
2597 All those changes (plus the buffer of last time) allow me to gain 2 order
2598 of magnitude on cruel tests consisting of 800000 array of integers on two
2599 level of a hierarchical structure (200 secondes -> 4 secondes)
2602 - the selector of reference must now return the type it points to, not
2603 the ID of this type.
2605 2004-08-06 Martin Quinson
2606 Version 0.4 (protocol changed; ABI not changed)
2607 - Allow to pass --gras-log argument to processes in simulation mode. Really.
2608 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
2609 - Implement a buffer transport, and use it by default (it relies on tcp in
2610 real life and on sg in simulation).
2611 That's a bit hackish since I had a new field to the structure to store
2612 its data without interfering with the subtype ones. Inheritance
2613 is tricky in C. And that's a kind of reverse inheritance with one class
2614 derivating two classes. Or maybe a game with java interfaces. Anyway,
2615 that's damn hard in C (at least).
2616 Moreover, I got tired while trying to ensure plugin separation and
2617 genericity in SG mode. MSG wants me to do weird things, so let's go for
2618 cruel hacks (temporarily of course ;).
2619 See comment in transport_private.h:71
2620 - do not include all the _interface headers in private but in the files
2621 which really need them (to cut the compilation time when they are
2624 2004-07-26 Martin Quinson
2625 Version 0.3 (protocol not changed; ABI changed)
2626 - Major overhault of the datadesc interface to simplify it:
2627 - shorted the function names:
2628 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
2629 - add a trivial way to push/pop integers into the cbps without malloc.
2630 This allows to make really generic sub_type description, which simply
2631 pop their size of the stack.
2632 - add a function gras_datadesc_ref_pop_arr() which does what users want
2633 most of the time: Declare a dynamic array (which pops its size of the
2634 stack) and declare a reference to it. Poor name, but anyway.
2635 - kill the post-send callback, add a post-receive one
2637 2004-07-23 Martin Quinson
2638 Version 0.2 (protocol changed; ABI changed)
2639 - add some testing for cpbs in the test cases, and fix some more bugs.
2640 This invalidate again the little64 data file, since I cannot regenerate
2642 - remove an awfull optimization in the logging stuff, allowing me to:
2643 - understand it again
2644 - learn gcc how to check that the argument match the provided format
2645 - fix all errors revealed by gcc after that
2646 - internal keys of dict are not \0 terminated. Deal with it properly in
2647 loggings instead of segfaulting when the user want to see the logs :-/
2649 2004-07-22 Martin Quinson
2650 - Fix some stupid bug preventing cbps (callback postit) from working
2652 2004-07-21 Martin Quinson
2653 - Some documentation cleanups
2654 - remove the useless last argument of msgtype_declare
2655 - rename the Virtu functions to fit into the 'os' namespace
2656 - move headers src/include -> src/include/gras/ and stop fooling with
2657 gras -> . symbolic link
2658 - make distcheck is now successful
2660 2004-07-19 Martin Quinson
2662 - Build shared library also
2663 - Install html doc to the right location
2664 - stop removing maintainer files in make clean
2665 - build tests only on make check
2667 2004-07-13 Martin Quinson
2669 - No major issue in previous version => change versionning schema
2670 - Re-enable little64 convertion test now that Abdou kindly regenerated the
2671 corresponding dataset.
2673 2004-07-11 Martin Quinson
2675 - Get it working with any kind of structure (we can compute the padding
2676 bytes remotely for all the architectures I have access to)
2677 - Implement the structure parsing macro (still not quite robust/complete)
2678 - Improvement to the remote testing toysuite
2680 2004-07-10 Martin Quinson
2681 [autoconf mechanism]
2682 - get ride of a bunch of deprecated macros
2683 - actually run the test for two-compliment, not only compile it :-/
2684 - test whether the structures get packed (and bail out if yes. Damn.
2685 Alignment is a serious matter)
2686 - test whether the structures get compacted (but respecting the alignment
2687 constraints of each types)
2688 - test whether the array fields of structures can straddle alignment boundaries
2690 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
2691 (took me 2 hours to find that bug, looking at the wrong place)
2692 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
2693 before sending/receiving and are used to compute the offsets of fields
2694 - Given that padding size depend even on compiler options, keep track of
2695 alignment and aligned_size only for the current architecture. Not a big
2696 deal since we send structure fields one after the other (seems
2698 - Add the datastructure used for IEEE paper by the PBIO guys to the test
2699 program, let it work on linux/gcc/little32. portability todo.
2701 2004-07-08 Martin Quinson
2702 - import and improve remote compilation support from FAST
2703 - make sure make check works on half a dozen of machines out there
2705 2004-07-07 Martin Quinson
2706 Let's say it's version 0.0.3 ;)
2707 - Implement conversions (yuhu!)
2708 - Let it work on solaris (beside conversion, of course)
2709 - Stupid me, using rand() to generate the conversion datatests in not wise.
2711 2004-07-06 Martin Quinson
2712 - Let make dist work, since I'm gonna need it to compile on remote hosts
2713 - Let Tests/datadesc_usage write the architecture on which the file was
2714 generated as first byte.
2715 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
2716 architecture descriptions.
2717 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
2718 on those architectures.
2719 - Optimization: send/recv array of scalar in one shoot
2721 2004-07-05 Martin Quinson
2722 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
2724 - Plug a whole bunch of memleaks
2725 - each process now have to call gras_{init,exit}. One day, their log
2726 settings will be separated
2727 - Continue the code factorisation between SG, RL and common in Transport.
2729 2004-07-04 Martin Quinson
2731 - Redistribution between SG and RL.
2732 We wanna have to accept in SG, so move accepted related parts of RL in
2733 the common part. (more precisely, the dynar of all known sockets is no
2734 more a static in transport.c, but part of the process_data)
2736 [gras_stub_generator]
2737 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
2739 2004-07-03 Martin Quinson
2740 - Create a new log channel tbx containing dict, set, log, dynar (to shut
2741 them all up in one shot)
2743 - Fix the ugly case of reference to dynamic array.
2744 - New (semi-public) function gras_datadesc_size to allow the messaging
2745 layer to malloc the needed space for the buffer.
2747 - gras_socket_close now expect the socket to close (and not its address to
2748 put NULL in it after it). This is because the socket passed to handlers
2749 is one of their argument (=> not writable).
2751 - propagate the interface cleanup from last week in datadesc, ie remove a
2752 superfluous level of indirection. User pass adress of variable
2753 containing data (both when sending and receiving), and not of a variable
2754 being a pointer to the data. Let's say that I like it better ;)
2755 The price for that is constructs like "int msg=*(int*)payload" in
2756 handlers, but it's a fine price, IMHO.
2758 - Let it work in RL (yuhu)
2760 2004-06-21 Martin Quinson
2762 - porting SG plugin and SG select to new standards (works almost).
2763 - plug memleaks and fix bugs around.
2766 - cleanup the prototype of data recv and force users to specify when they
2767 want to handle references to objects. Test case working even for cycles.
2768 - plug memleaks. Valgrind is perfectly ok with this.
2770 2004-06-12 Martin Quinson
2772 - cleanup the separation between plugin and main code in plugin creation
2774 2004-06-11 Martin Quinson
2776 - Reput hook for raw sockets, needed for BW experiments
2777 - kill a few lines of dead code
2778 [Data description] Interface cleanup
2779 - gras_datadesc_by_name returns the searched type or NULL.
2780 That way, no variable is needed to use a type desc once, which makes
2782 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
2783 two parameters were strings (field name, type name), leading to
2785 [Dicos] Interface cleanup
2786 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
2787 This is consistant with the dynar API.
2789 2004-04-21 Martin Quinson
2791 - Porting to new standards.
2793 - interface cleanup.
2794 There is no bag anymore, no need to take extra provision to mask the
2795 pointers behind "ID".
2796 Better splitup of functions between files create/exchange/convert.
2797 This is still a bit artificial since convert and receive are so
2798 interleaved, but anyway.
2800 - add a queued message list to procdata (the ones not matching criteria
2802 - factorize some more code between SG and RL wrt procdata
2804 - use gras_exit in example to track memleaks
2805 - get rid of gs_example now that GS is properly integrated into gras
2806 - update run_test to integrate the latest tests (datadesc)
2808 - rename WARNINGn macros to WARNn since it prooved error-prone
2810 2004-04-19 Martin Quinson
2812 - register init/exit functions within gras module mechanism
2813 - send/receive function.
2814 Convertion is not implemented, but short-cutted if not needed.
2815 struct/array elements are sent one by one (instead of block-wise), but
2816 nobody really cares (yet). Get a prototype before optimizing.
2817 - tests (using a file socket) for DD send/receive on:
2818 - base types: int, float
2819 - array: fixed size, string (ie ref to dynamic string)
2820 - structure: homogeneous, heterogeneous
2821 - chained list, graph with cycle
2822 Believe it or not, valgrind is not too unhappy with the results. The
2823 cycle happily segfaults, but the others are ok. And I'm sick of pointers
2827 - Bugfix when using a filename explicitely (instead of '-')
2829 2004-04-09 Martin Quinson
2831 - factorize more code between RL and SG in socket creation
2832 - Complete the implementation and tests of:
2834 o file (only in RL, and mainly for debugging)
2836 I lost 3 days to design a portable address resolver, and then decided
2837 that the prototype mainly have to run on my box.
2838 Addressing portability too early may be like optimizing too early :-/
2840 - use gras_init in the Tests instead of the crappy parse_log_opt
2841 (the latter function is removed)
2842 [Conditional execution]
2843 - New functions: gras_if_RL/gras_if_SG (basic support for this)
2844 [Code reorganisation]
2845 - Get rid of libgrasutils.a since it makes more trouble than it solves.
2846 Build examples against the RL library, since there is no way to disable
2847 its creation for now.
2849 For information, the beginning of coding on GRAS was back in june
2850 2003. I guess that every line has been rewritten at least twice since