1 SimGrid (3.14) UNRELEASED; urgency=low
4 * The whole documentation was reworked and reorganized. There is
5 still much room for improvement here, but we're on it.
8 * We now need python3 for our testing infrastructure.
11 * Privatization is now activated by default in smpirun
12 You can turn it off with -no-privatize if something goes wrong.
14 * Call-location tracing for SMPI.
15 You can add the exact location (filename / linenumber) of an MPI call to
16 your trace files and slow down or speed up the simulation between two
17 consecutive calls by using an adjustment file (see the documentation).
19 * Fixed computation of timings for MPI_Send, MPI_Recv & possibly also others
20 We've found a bug that prevented SMPI to account for MPI_Send, MPI_Recv
21 and others (in some cases) in a correct way. That is, the smpi/os, smpi/or
22 values were ignored in some cases. The timings of these functions can now
23 be significantly different.
25 * smpi/cpu-threshold:-1 should become smpi/simulate-computation:no
26 smpi/running-power is renamed to smpi/host-speed
28 Dropped functions and features
29 * msg_mailbox_t and associated functions. Use s4u::Mailbox instead.
30 - MSG_mailbox_is_empty() -> Mailbox::empty()
31 - MSG_mailbox_front() -> Mailbox::front()
32 - MSG_mailbox_get_by_alias() -> simgrid::s4u::Mailbox::byName(name)
33 - MSG_mailbox_get_task_ext() -> MSG_task_receive_ext()
34 - MSG_mailbox_get_task_ext_bounded -> MSG_task_receive_ext_bounded
35 * Task affinity. Its intended behavior (that was very badly tested
36 and probably not really working) was deceiving what most users
37 would have hoped here.
38 * xbt_os_sem_get_value: unused internally, deprecated on OS X El Capitan
41 * Add Exa- and Peta- units such as EiB, EB, Eib, Eb for size, and
42 EiBps, EBps, Eibps, Ebps for bandwidth.
43 They may become useful to some lucky ones.
46 * New functions: msg.Comm.waitAll() and msg.Comm.waitAny()
47 * ex/app_tokenring: new example, very similar to the MSG Token Ring
48 * ex/async_waitAll: new example, on asynchronous communications
50 -- $date Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
52 SimGrid (3.13) stable; urgency=low
54 The Half Release, a.k.a. the Zealous Easter Trim.
56 - We removed half of the lines, that were mostly experimental cruft.
57 v3.12 lasted 286000 lines of code, v3.13 is only 142000 lines
58 (not counting blanks and comments -- according to openhub.net)
59 - The internals are now compiled in C++ (and will soon be clean C++)
60 - We removed 75 klines of XML, 12 klines of Java, 5 klines of cmake,
61 59 klines of C, etc. We added only 29 klines of C++ in replacement.
63 * Backwards Compatibility breaks
64 - Removed Lua simulation bindings (switch to C or Java for that).
65 Lua can still be used to describe platforms
66 - Removed Java kernel plug-ins.
67 Will be reintroduced after the ongoing major internals reorg.
69 - the following functions were removed.
70 They were too specific and should be reimplemented in a generic
71 way, with filter function.
72 - MSG_task_listen_from_host
73 - MSG_mailbox_get_count_host_waiting_tasks
74 - MSG_mailbox_put_with_timeout was removed.
75 Please use MSG_task_send_with_timeout instead.
77 - the SD_application_reinit function was removed. It has been a noop for a while.
78 - The ACCESS_MODE of SD_workstation has been removed. This feature was not really usable and should soon be
79 replaced by a more flexible mechanism.
80 - The following functions thus do not exist anymore
81 - SD_workstation_get_access_mode
82 - SD_workstation_set_access_mode
83 - SD_workstation_get_current_task
84 - Basic estimation functions have been removed but can easily be replaced
85 - SD_route_get_communication_time => SG_route_get_latency() + amount / SD_route_get_bandwidth()
86 - SD_workstation_get_computation_time => amount / sg_host_speed()
88 - VM.setBound(int load) is now VM.setBound(double bound) to meet the MSG semantics.
89 Use VM.getSpeed()*load/100 for the legacy behavior.
91 - option enable_tracing was removed. It was not doing anything for a while.
92 - In the ModelChecker:
93 - the model-checker now ptraces the model-checked process which means
94 you cannot use a debugger on the latter anymore (we might make this
95 optional in the feature);
96 - removed soft-dirty page tracking;
97 - remove model-checked side snapshot management,
98 MC_snapshot() and MC_compare_snapshot();
99 - keep the MC_cut() function as a stub (it was not really working
100 in the previous release).
103 * All options are consistently in kebab-case. Old names are kept as alias.
106 * Switch to platform v4 format.
107 - Rename from 'power' to 'speed' the attributes describing the amount of
108 flops that a <host>, <peer>, <cluster> or <cabinet> can deliver per second.
109 - In <trace_connect>, attribute kind="POWER" is now kind="SPEED".
110 - In <host> and <link>, attributes availability and state are gone.
111 It was redundent with state and availability traces, and with peak values.
112 - In <cluster>, attributes availability_file and state_file are gone.
113 It was too complex and unused.
114 - Kill <gpu>. Was not doing anything.
115 - The DOCTYPE points to the right URL:
116 http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd
117 (the file at this address now documents the changelog since its v1)
118 - A warning is emitted for unit-less values (they are still accepted).
119 - speed. Default: 'f' or 'flops'. Also defined:
120 'Yf', 'Zf', 'Ef', 'Pf', 'Tf', 'Gf', 'Mf', 'kf'
121 'yottaflops', 'zettaflops', 'exaflops', 'petaflops', 'teraflops', 'gigaflops', 'megaflops', 'kiloflops'
122 - bandwidth. Default: 'Bps' bytes per second (or 'bps' for bits but 1 Bps = 8 bps)
123 Also defined in bytes: 'TiBps', 'GiBps', 'MiBps', 'KiBps', 'TBps', 'GBps', 'MBps', 'kBps', 'Bps'
124 And the same in bits: 'Tibps', 'Gibps', 'Mibps', 'Kibps', 'Tbps', 'Gbps', 'Mbps', 'kbps', 'bps'
125 - latency. Default: 's' second. Also defined:
126 'w' week, 'd' day, 'h' hour, 'm' minute, 'ms' millisecond, 'us' microsecond, 'ns' nanosecond, 'ps' picosecond
128 * bin/simgrid_update_xml can upgrade your files automatically (won't convert unit-less values)
129 tools/sg_xml_unit_converter.py may help (but it's just a warning and will probably ever be).
132 * s4u::Host is now the preferred public interface to the Host features.
133 sg_host_* functions are C bindings to the exact same behavior
134 MSG_host_* and SD_workstation_* are #define to the sg_host_* ones
137 * The examples were completely reorganized (in C and Java), for your browsing pleasure.
138 * Kill all deprecated functions (the ones you had when declaring MSG_DEPRECATED).
139 They were deprecated since a few years, and probably did not even compile anymore.
142 * The API has been profoundly modified to directly use the core objects instead of redefining its own.
143 SD_Workstation_t and SD_link_t are now sg_host_t and sg_link_t respectively.
144 Some functions have also been renamed for consistency. Backward compatibility is maintained, but users are
145 encouraged to update their codes. A list of the modified functions can be found at the end of
146 include/simgrid/simdag.h
149 * simgrid::simix::kernelImmediate() is the closure callback. It ensures that
150 the lambda or closure passed as a parameter will run in kernel mode.
151 All the callback functions should be rewritten to that interface at some point.
154 * Reorganizing and cleaning the internals all around the place.
157 * Remove old default barrier/bcast buggy algorithms (see #18407)
158 * Various bug fixes to handle more codes
159 * Remove the need for the --foreground option of smpirun (it is still
160 accepted for backward compatibility).
163 * Kill the setset data container: MC don't use it anymore.
164 * Kill the queue data container: it made more sense with GRAS.
165 * Kill the xbt_peer_t data type: it's useless without GRAS.
166 * Kill rm_cb feature of config sets: it was never useful.
167 * Kill graphxml parsing feature. It was not used.
168 * Kill the deprecated code protected by XBT_USE_DEPRECATED
170 - xbt_dynar_sort_strings(), when the content is char*
171 - xbt_str_parse_int / xbt_str_parse_double, wrapping strtol/strtod
172 They throw exceptions on invalid input;
173 * C++ support for declaring CLI flags (simgrid::config::Flag);
174 * class for abstracting different signal backends (simgrid::xbt::signal).
175 with no external dependencies (we need very simple signals).
178 * refactoring and cleanup of the code;
179 * ongoing process to cleanly separate the model-checking algorithms
180 from the code model-checking support.
182 -- Wed Apr 27 21:00:53 CEST 2016 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
184 SimGrid (3.12) stable; urgency=low
186 The Facelift Release.
189 * Require g++ v4.7 at least to not speak prehistorical C++.
190 * Require Boost 1.48 (for signal2 component).
191 * Java must be version 7 at least when activated.
192 * Builds on Windows again (including Java bindings).
193 * Tracing is now always enabled (no way to turn it out)
194 * Remove GTNetS. It was not working anyway.
195 * Various cleanups in the cmake scripts.
196 * Move headers around to sort them out on installed systems:
197 - instr/instr.h -> simgrid/instr.h
198 - instr/jedule/* -> simgrid/jedule
199 - simdag/datatypes.h was removed
200 - simdag/simdag.h -> simgrid/simdag.h
201 - msg/datatypes.h was removed
202 - msg/msg.h -> simgrid/msg.h
205 * Interface improvement:
206 - Rename MSG_host_is_avail(h) to MSG_host_is_on(h)
207 - Sanitize the interface in MSG_task_ module:
208 - Merge two functions that were close enough but misleading:
209 set_compute_duration(t) -> set_flops_amount(t)
210 get_remaining_computation(t) -> get_flops_amount(t)
211 - set_data_size(t) -> set_bytes_amount(t)
212 get_data_size(t) -> get_bytes_amount(t)
213 - Massive cleanups in the functions related to the energy
214 - MSG_host_get_pstate_number() -> MSG_host_get_nb_pstates()
215 - New: MSG_host_get_pstate()
217 - msg/energy/onoff: switching hosts on and off
219 * Interface improvement:
220 - Rename Host.isAvail() to Host.isOn()
221 - Rename Process.currentProcess() to Process.getCurrentProcess()
222 - Rename Task.setDataSize() to Task.setBytesAmount()
223 - Merge Task.getRemainingDuration() and Task.getComputeDuration() into Task.getFlopsAmount()
225 - #18874: Actually allows the GC to reclaim tasks
229 - SIMIX_process_throw: raises an exception in a remote process
230 * Refactoring: Separate sub-modules
231 - libsmx: the public interface, as libc in a real system
232 - popping: the strange dance that converts a user request into a kernel handling
233 - smx_context_*: the virtualization mechanisms that embed the user code
234 - smx_*: the handling of each simcalls
236 - simcall_host_set_power_peak_at -> simcall_host_set_pstate
237 * Rename smx_action_t into smx_synchro_t, making explicit that these
238 things are used to synchronize processes with their environment.
239 For example, a communication is a sort of synchronization involving
240 the communicating processes (that may block until the exchange) and
241 the platform. The same can be said from computations, etc.
243 - #18888: segfault when a process ends before its kill_time
247 - 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.
248 - MPI_Keyval*, MPI_Attr* functions, as well as MPI_Comm_attr*, MPI_Type_attr* variants (C only, no Fortran support yet)
249 - MPI_Type_set_name, MPI_Type_get_name
250 - MPI_*_c2f and MPI_*_f2c functions
251 - MPI_Info_* functions (beware, get_nthkey may not follow the insertion order)
252 - MPI_Pack, MPI_Unpack and MPI_Pack_size functions
253 - Activate a lot of new tests from the mpich 3 testsuite
255 - Constant times can be injected inside MPI_Wtime and MPI_Test through options smpi/wtime and smpi/test
256 - InfiniBand network model added : Based on the works of Jerome Vienne
257 http://mescal.imag.fr/membres/jean-marc.vincent/index.html/PhD/Vienne.pdf
258 - When smpi/display_timing is set, also display global simulation time and application times
259 - Have smpirun, smpicc and friends display the simgrid git hash version on --git-version
260 * Collective communications
261 - 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
262 - 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/).
263 - Support for Rabenseifner Reduce/Allreduce algorithms (https://fs.hlrs.de/projects/par/mpi//myreduce.html)
265 - Replay now uses algorithms from wanted collective selector
266 - Replay can be used with SMP-aware algorithms
267 - Memory occupation of replay should now be contained (temporary buffers allocated in collective algorithms should be shared between processes)
268 - 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.
270 - [#17799] : have mpi_group_range_incl and mpi_group_range_excl better test some corner cases
271 - Correctly use loopback on fat-tree clusters
272 - Asynchronous small messages shouldn't trigger deadlocks anymore
273 * Energy/DVFS cleanup and improvement
274 - smpi_set_host_power_peak_at() -> smpi_set_host_pstate()
275 - new: smpi_get_host_pstate()
278 - "Full" network optimization flag was broken since Surf++
279 - Better handling of precision flags in maxmin
280 - Fix bug causing sometimes "Impossible" errors
281 - Properly pass cluster properties to included hosts
282 * Improvement of the Energy plugin.
283 - Always update the consumption before returning that value
284 - New property: watt_off to denote the dissipation when the host is off
285 - New functions getWattMinAt and getWattMaxAt to retrieve the
286 dissipation of pstates that we are not currently at.
287 * Java: class NetworkLink renamed to Link
288 * New function: simcall_process_get_kill_time()
289 * Massive rename s/workstation/host/
290 - That's intrusive, but that's good for the project consistency. Sorry.
291 - Change config option "workstation/model" into "host/model"
294 - Add a xbt_heap_update function, to avoid costly xbt_heap_remove+xbt_heap_insert use
295 - Add a xbt wrapper for simcall_mutex_trylock (asked in [#17878])
296 - Add two new log appenders : rollfile and splitfile. Patch by Fabien Chaix.
297 - xbt_dirname and xbt_basename for non-POSIX systems
299 * The model checker now runs as a separate process.
300 * The model checker runs must now be launched with the new simgrid-mc program.
301 * Record/Replay: the MC can display a textual representation of a path in the
302 execution graph. It can then be replayed outside of the model checker.
304 -- Mon Oct 12 06:02:41 CEST 2015 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
306 SimGrid (3.11) stable; urgency=low
311 * Normalizing pointers addresses tool for better diff between logs
314 * Add cloud examples using new VMs
315 - examples/msg/cloud/two_tasks_vm.tesh
316 - examples/msg/cloud/simple_vm.tesh
317 - examples/java/cloud/cloud.tesh
318 - examples/java/cloud/migration/migration.tesh
319 * Add java surf examples:
320 - examples/java/surfPlugin/surf_plugin.tesh
321 - examples/java/reservationSurfPlugin/reservation_surf_plugin.tes
322 - examples/java/surfCpuModel/surf_cpu_model.tesh
323 * Add SMPI+MSG example:
324 - examples/smpi/smpi_msg_masterslave/
329 - msg task destroy cancel test
330 - msg_host on/off test
331 * Move all tests in testsuite to teshsuite (adding tesh files)
332 * Restructure teshsuites
333 - one folder for each kind of test
334 * Restructure AddTests.cmake
336 - structure the order of tests (with sections)
339 * Add virtual machine
340 - creation of a VM on a PM
341 - migration of a VM from a PM to another PM
343 - MSG_process_join(msg_process_t process, double timeout)
344 - msg_bar_t MSG_barrier_init(unsigned int count)
345 - int MSG_barrier_wait(msg_bar_t barrier)
346 - void MSG_barrier_destroy(msg_bar_t barrier)
347 - msg_as_t MSG_environment_as_get_by_name(const char * name)
348 * New option "msg/debug_multiple_use" to help debugging when a task is used
351 - Improvements and finalization of MSG_storage, MSG_file APIs and their
353 - Increase code coverage in test suites
357 * Protect context stacks against stack overflow. The number of protected memory
358 pages allocated on the top of each stack (1 by default) can be configured
359 with the new command line option --cfg=contexts/guard_size:<value>.
360 * Simcalls are now generated by a python script that
361 - generates files included by SimGrid
362 - checks that all the functions exist, and proposes prototypes
364 - remove sem_destroy, file_set_data, comm_destroy, vm_set_state,
365 host_set_data, host_get_data
367 - simcall_process_join(smx_process_t process, double timeout)
368 * Fix bug where sleeping processing could not be suspended.
371 * Translate surf models from C to C++
372 - Generic classes for all models: Model, Resource, Action
373 - A generic interface for each kind of model (CPU, Network, Storage
374 Workstation, WorkstationVM)
376 * Translate surf routings from C to C++
377 * Add callbacks using sigc++ or boost::signals2
378 - Add callback functions for resource creation/destruction
379 - Add callback functions for action state change
380 - Handle Energy as a plugin
381 * Replace swag by boost::intrusive
382 * Add new routing models for clusters. For documentation, see
383 http://simgrid.gforge.inria.fr/simgrid/latest/doc/platform.html#pf_cluster
384 - tori, with topology="TORUS" and topo_parameters="ndim1,ndim2,...,ndimn"
385 parameters for cluster tag
386 - Fat trees, with topology="FAT_TREE" and
387 topo_parameters="h;m1,...,mh;w1,...,wh;p1,...,ph" parameters for cluster tag
388 - see examples/platforms/torus_cluster.xml and
389 examples/platforms/fat_tree_cluster.xml
393 * Hostfiles support host:nb_processes construct to deploy several processes on
395 * Collective communication algorithms should not crash if used with
396 improper number of nodes and report the error.
397 * SMPI now partially supports MPI_Topologies : MPI_Cart_create, MPI_Cart_shift,
398 MPI_Cart_rank, MPI_Cart_get, MPI_Cart_coords, MPI_Cartdim_get,
399 MPI_Dims_create, MPI_Cart_sub are supported.
400 * New interface to use SMPI programmatically (still depends on MSG for
401 some parts, see examples/smpi/smpi_msg_masterslave) :
402 - SMPI_app_instance_register(const char *name, xbt_main_func_t code,
406 * Global variables privatization in MPI executables is now performed at runtime
407 with the option smpi/privatize_global_variables (default:no).
408 Limitations : Linux/BSD only, with mmap enabled. Global variables inside
409 dynamic libraries loaded by the application are not privatized (static
410 linking with these libraries is advised in this case)
413 * Options defined in XML work correctly now.
416 * New cmake option, enable_lib_in_jar, to control whether native libraries are
417 copied into simgrid.jar or not (ON by default). Use this option if you want
418 to reduce the size of the installed simgrid.jar, *and* the native libraries
419 are kept installed elsewhere.
420 * Surf binding with SWIG (code generated in maintainer mode only):
421 - plugin to handle callbacks
422 - CPU model only for the moment
425 * Supernovae build mode is definitively removed. It was used to improve
426 inlining and inter-module optimizations. It is nowadays superseded by
427 link-time optimizations commonly available in compilers.
428 * Update ns-3 find lib. Bindings for ns-3 should work again now.
429 * Add boost dependency for surf++
430 * Add new macro for tests
431 - ADD_TESH(name <tesh_args>)
432 - ADD_TESH_FACTORIES(name "thread;ucontext;raw" <tesh_args>)
436 - xbt_bar_t XBT_barrier_init(unsigned int count)
437 - int XBT_barrier_wait(xbt_bar_t barrier)
438 - void XBT_barrier_destroy(xbt_bar_t barrier)
439 * Make the xbt_os_time module public
441 -- Sat May 31 22:39:38 CEST 2014 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
443 SimGrid (3.10) stable; urgency=low
445 The Clean Diaper Release, a.k.a. SimGrid is leak-free.
448 * Reintegrate Java to the main archive as desynchronizing these
449 package is not acceptable anymore (Java is now considered stable)
450 * Add explicit synchronization facilities through semaphores
451 * Bug fix: Task.setDataSize() only changed the C world, not the value
452 cached in the Java world
455 * Dramatically change the way files are handled. API and internals changed, but
456 this part of MSG was not considered as production grade either.
457 * Add explicit synchronization facilities through semaphores
458 * Add a new function MSG_host_get_process_list()
459 * Preliminary DVFS support (see examples/msg/energy/ for details)
462 * SMPI is now included directly in the libsimgrid as the windows
463 linker doesn't force us on splitting it anymore.
464 * Improvements of the SMPI replay tool:
465 - Most of the collective communications are now rooted in the same process as
466 in the original application.
467 - Traces now rely on the same MPI data type as the application (MPI_BYTE was
468 used until now). Multiple data types can now be used in a trace.
469 - The replay tool now supports traces produce either by TAU or a modified
471 - Bug Fix: the compute part of the reduce action is now taken into account.
472 - Gatherv collective is now supported
473 - SimGrid (SMPI for now) can generate replay traces as well. Option -trace-ti
474 of smpirun outputs time independent traces for the current run. One file
475 is created per process. If too many processes are simulated, this behavior
476 can be changed to one file for all processes by using the
477 tracing/smpi/format/ti_one_file flag
478 * smpirun generates the host file if needed (with given host count and platform)
479 * Integration of more than 100 STAR-MPI, MPICH, OpenMPI collective algorithms
480 - allows to select one in particular with --cfg=smpi/coll_name:algorithm
481 - allows to use the decision logic of OpenMPI(1.7) or MPICH(3.0.4) by setting
482 --cfg=smpi/coll_selector:(mpich/ompi)
483 * Support for new functions : MPI_Issend, MPI_Ssend, Commutative operations in
485 * Add a --cfg:tracing/smpi/internals option, to trace internal communications
486 happening inside a collective SMPI call.
487 * Fix the behavior of complex data types handling.
488 * Make MPI_Wtime another synchronization point to take computations into
490 * Replace MPICH-1 test suite by the one from MPICH 3.0.4. Can be built using
491 enable_smpi_MPICH3_testsuite flag in cmake. Run with ctest.
492 * Add all missing Fortran bindings, SMPI should work with Fortran 90
493 (no privatization of global variables yet)
494 * Preliminary DVFS support (see examples/smpi/energy/ for details)
497 * Verification of liveness properties is now available for SMPI applications
498 (in addition to MSG applications)
499 * Bugged examples using SMPI in examples/smpi/mc/
500 * Add --cfg=model-check/visited option. Allows the verification of infinite
501 programs. Detection of loops in the execution thanks to the system state
502 comparison and reduction of the state space to explore. Can be combined with
503 DPOR for safety properties.
506 * Allow to change SimGrid configuration (see --help) within the code
507 thanks to SD_config() as it can be done in MSG.
508 * Add a new function SD_task_set_amount() upon user request.
511 * Handle units for values (10ms, 10kiloflops, 10Bps, 1GB, ...)
512 * Remove rule based routing (no more PCRE dependency)
513 * Add a limiter_link option to cluster tag, to specify a maximum reachable
514 bandwidth in fullduplex mode when it is less than twice the nominal bandwidth.
515 * Add a loopback_bw and loopback_lat options to cluster tag.
516 * Fix the peer tag that could not be mixed with other AS within a Vivaldi
517 routing. Now peers are encapsulated in an AS and have their own private
518 router but this is transparent.
521 * Our own implementation of getline is renamed xbt_getline, and gets
522 used even if the OS provide a getline(). This should reduce the
523 configuration complexity by using the same code on all platforms.
524 * New type: xbt_cfg_elm_boolean.
525 * Allow to use yes/no for boolean configuration options in the command line.
526 * Allow to disable SimGrid cleanups at exit from command line option.
527 There are situations where one may want a simulation to end with an exit.
528 Unfortunately, calling exit may cause SimGrid to segfault, which is quite
529 annoying when scripting around the simulator. Adding a
530 --cfg=clean_atexit:no allows to circumvent this issue.
533 * Lots of memory leaks were corrected in this release.
534 There is no known memory leaks anymore, in all of our 600+ tests.
535 * New command line option --version, to get SimGrid version information.
536 Packagers may want to add extra words to SIMGRID_VERSION_EXTRA defined in
538 * Supernovae builds are deprecated, and expected to be removed in the next
541 -- Sun Nov 17 00:26:44 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
543 SimGrid (3.9) stable; urgency=low
545 The Grasgory release: GRAS is really dead now.
547 * Complete overhaul of the internal host structures scheme.
550 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
551 was considered as experimental and badly maintained since then.
552 * Keeping it was thus a trap to our potential users, that could take
553 it instead of MSG or SMPI by mistake despite is pity state.
554 * GRAS seems to have very few users (if any), and no one volunteered
555 to maintain it further. It also induces a lot of XBT code (for
556 portability sake), that must be maintained too.
557 * For all these reasons, we killed GRAS. If someone wants to revive it
558 in the future, don't cry, our git history still remembers of GRAS.
561 * Major overhaul. Merge our documentation again as time proved that
562 splitting it was really not helping our users.
563 * Further improve the developer documentation to help newcomers
564 hacking on SimGrid itself. The user documentation (and in
565 particular, the beginner documentation) is still in a sorry state.
568 * Now works on Windows too!
569 * Much more extensive test suite, from MPICH
572 * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
573 (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
574 dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
575 * Bug fix: let task be scheduled when the last dependency to be solved is
576 a control dependency.
577 * Remove SD_load_environment_script function.
578 Use the C sg_platf function if you want to declare a platform
582 * New function: MSG_process_get_number()
583 * Old function documented: MSG_config()
584 * Remove MSG_load_platform_script function
585 Use the C sg_platf function if you want to declare a platform
589 * Change the default value of the TCP_gamma constant (maximal size of TCP
590 congestion window) to a more realistic 4MiB value. If you notice changes in
591 your simulation results, you can fall back to the previous 20k tiny window
592 by adding --cfg=network/TCP_gamma:20000 on command line.
593 * (Hopefully) fix a bug wrt periodic availability and state traces
594 * Bug fix: use default values at start when first event in availability/state
595 trace is not at time 0.
598 * remove the "new_" part of function name sg_platf_new_trace_connect
599 (resulting in sg_platf_trace_connect), since it does not create
603 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
604 use case where it's really mandatory, and maintaining it was a pain in
606 * New: xbt_fifo_search(), search an item with a user-provided
607 comparison function instead of dumb pointer comparison.
610 * Fix the lua deployment:
611 Use `simgrid.init_application()` before deployment instead of
612 `simgrid.msg_register_application()` after.
615 * Transfer the tracing files into the corresponding modules.
617 -- Tue Feb 5 11:31:43 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
619 SimGrid (3.8.1) stable; urgency=low
621 The "we are told that some people want to also *install* the simgrid
624 * Add missing file "tesh.1" to the archive.
626 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
628 SimGrid (3.8) stable; urgency=low
630 The Psssshiiiit release: SimGrid jumps into the Cloud.
633 * Add an experimental interface to manipulate VMs. They are mainly
634 process groups with very few intrinsic semantic, but they should
635 allow you to build the semantic you want easily.
636 * New function: MSG_host_set_property_value()
637 * New function: MSG_process_on_exit(). To clean memory in all cases.
638 * Bug fixes that made the host (and link) failures unusable.
639 * Add a way to auto-restart process when the host in which they are
640 executing comes back (ON_FAILURE="RESTART" on deployment file,
641 MSG_process_auto_restart_set).
642 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
643 please stop using the old ones, they are DEPRECATED.
645 * Deprecate functions MSG_global_init() / MSG_global_init_args()
646 Please use MSG_init() instead. (reducing the amount of entry
647 points in the library helps us).
648 * Make it impossible to link against the wrong version of the lib
649 * Deprecate MSG_clean(). No need to call it anymore.
650 * Function MSG_get_host_number() is not deprecated anymore.
653 * Split the doc into a user guide and a reference guide.
654 * Start a developper guide to help people hacking on SimGrid.
657 * Enable tracing by default. This modules rocks you should use it.
658 * Remove option custom_flags. Now use environment variables CFLAGS
660 * Use default cmake things to detect lua instead of home grown ones.
661 * New option "enable_mallocators" to disable mallocators, for debugging
662 purpose ("on" by default).
665 * Bug fixes around the resource failures: don't let the processes
666 survive the host they are running onto.
667 * Add an interface to auto-restart processes when the host in which they are
668 executing comes back.
669 * Ensures that SIMIX_clean is called automatically. It's not part of
670 the public interface anymore (bindings should be updated).
673 * Bug fix for when SD_Simulate is called with a positive value: be careful
674 when comparing doubles. Sometimes they are different for non significant
676 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
677 parallel task whose initial work is distributed among host according
678 to the Amdahl's law. Such tasks are created with a parameter alpha
679 that corresponds to the non-parallelizable part of the computation.
680 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
681 between two sets of workstations assuming a 1D block distribution (each
682 workstation owns a similar share of data) on both sides.
684 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
685 Data redistribution will be automatically scheduled once parent and child
686 are both scheduled. The filling of computation_amount and
687 communication_amount structures is now done seamlessly thanks to the chosen
689 * New function SD_workstation_dump to display various information
690 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
691 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
692 bandwidth on the route onto which the task is scheduled and the amount of
694 To divide the nominal bandwidth by 2, the rate then has to be :
695 rate = bandwidth/(2*amount)
696 * Compute tasks that have failed can now be rescheduled and executed again
697 (from their beginning)
698 * Increasing source code coverage (src/simdag is now covered at 95.8%
702 * Re-implement time-independent trace replay using SMPI (at the
703 smpi_smp_* level) instead of MSG. This should replace
704 examples/msg/actions/actions.c
705 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
706 hindexed and structs)
707 * Implement the exchange of non-contiguous data.
708 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
709 * Correct behavior of smpi/sender_gap and set its default value to 0
710 * Add option to asynchronously send small messages to allow better
711 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
712 specifies the size in bytes under which messages will be asynchronously sent.
713 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
714 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
717 * New C interface to define a platform: XML is now optional.
718 For more info, please check include/simgrid/platf.h.
719 * New interface to define random platforms from the C:
720 For more info, please check include/simgrid/platf_generator.h and
721 examples/msg/masterslave/masterslave_platfgen.c
722 * Export a sg_cmdline dynar containing all the arguments we got from
726 * Two new tracing options for adding comments to trace file so you
727 can track your experiments (see --help-tracing for details).
728 * New option to generate a impoverished trace file (--cfg=tracing/basic:1)
729 * Adding the SimGrid version that generated the trace file as a comment.
730 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
731 * Fix to avoid key clashes on Paje links
732 * Other minor fixes related to the Paje specification
735 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
736 and renamed to xbt_str_hash() and xbt_str_hash_ext().
737 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
738 * Greatly improve the robustness of mmalloc to user errors (such as
739 using an area after freeing it, or freeing it twice)
741 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
743 SimGrid-java (3.8.1) stable; urgency=low
745 * New module: org.simgrid.trace.Trace (SimGrid trace bindings)
746 Warning: all methods are visible, but only some of them are
747 implemented so far. Check the source (src/jtrace.c)
748 for further information.
749 * New module: org.simgrid.msg.File (SimGrid File management functions)
750 * New Module: org.simgrid.msg.VM (SimGrid interface to mimick IAAS clouds)
751 * Change the meaning of Process.restart: now restart the process from
752 the begining, like MSG_process_restart in C.
753 * Add Process.setAutoRestart: handling of process restart when failed
755 * Add Process.getProperty, Host.getProperty, Host.getProperty: allows
756 you to retrieve the properties of the processes/hosts
757 * Deprecate Msg.clean(): you can just forget about it now.
758 * New function Process.getCount(), that only works when compiling
759 with the not yet released version 3.9 of the C library.
761 * New context factory based on Coroutines. It mandates a modified JVM
762 but then, the simulations run about five times faster, and there is
763 no limit to the amount of processes (beside of the available memory).
765 -- 2012-12-04 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
767 SimGrid (3.7.1) stable; urgency=low
770 * Restore the prototype of MSG_process_create_with_environment() to
771 the pre-3.7 situation by removing the kill_time argument.
772 * Add a MSG_process_set_kill_time() function instead.
775 * Fix weird behaviors when dealing with parallel tasks.
778 * Simgrid is now built as a dll.
779 * Simgrid-java now works on Windows.
780 * Simgrid-Java is now included into Windows package.
783 * First pre-build package for MacOSX.
786 * Fix compilation when using MSG_USE_DEPRECATED.
787 * Fix some compilation issues on Macs and Windows.
788 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
789 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
791 We discovered that the Lua console is broken, but we are missing the
792 manpower to fix it right now. The problem existed in 3.7 too, so we
793 are not blocking the release for that. Sorry if you depended on this
794 feature, any help would be really welcome.
796 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
799 SimGrid-java (3.7.1) stable; urgency=low
801 The "Java aint got to be bloated and slow" release
804 * Various internal cleanups and performance improvement
805 Simulations are expected to run up to twice faster or so
806 * Make Process.kill(process) an instance method, not a static one
807 * User processes are not java.lang.Thread subclasses.
808 This breaks the compatibility (sorry), but previous API was
809 brain-dead, making it impossible to have non-trivial
810 initializations in the process constructor.
811 * Require a full constructor per Process sub-class.
812 Kinda breaks the compatibility (sorry), but this allows a much more
813 efficient way to launch the processes at simulation startup.
814 * Do not embeed our version of semaphores, java 1.5 can be considered
815 as sufficiently prevalent for us to not dupplicate its features.
819 * Add examples for almost every part of the API
820 We spotted and fixed a lot of bugs in the process
822 * New module: asynchronous communication API
823 * New function: Process.sleep()
824 It takes milliseconds as argument, just as java.lang.Thread.sleep()
825 * New module: org.simgrid.msg.Mutex (SimGrid mutexes)
826 * New module: org.simgrid.msg.RngStream (RngStreams random generators)
828 -- 2012-06-12 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
830 SimGrid (3.7) stable; urgency=low
832 The "spring cleanups (before the next Big Project kicks in)" release.
835 * We can specify the SMPI latency/bandwidth factor with command line
836 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
837 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
838 You can also use the "config tag" from platform file by adding this line
839 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
840 (see "example/platforms/tag_config.xml" to use "config tag").
841 Note that the command line supersedes the platform file configuration.
842 * Change the correction factors used in LMM model, according to
843 the latest experiments described in INRIA RR-7821.
844 Accuracy should be improved this way.
845 * Use the partial invalidation optimization by default for the
846 network too. Should produce the exact same results, only faster.
847 * Major cleanup in surf to merge models and split some optimization
848 mechanisms from the core of the models. As a result you can now
849 specify which model to use (e.g., --cfg=network/model:LV08
850 --cfg=cpu/model:Cas01) and which optimization mode to use
851 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
852 Incompatible combinations should err at initialization. See
853 --help-models for the list of all models and optimization modes.
854 * The CLM03 workstation model was dropped for simplicity because it
855 used the deprecated CM02 network model. Use default instead.
856 * Rename the TCP_gamma configuration option to network/TCP_gamma
857 * Rename the coordinates configuration option to
858 network/coordinates, and document it
859 * Use now crosstraffic keyword instead of the terribly misleading
860 fullduplex keyword. It is activated by default now in the current
861 default model, use --cfg=network/crosstraffic:0 to turn it off.
862 * Ongoing refactoring the model parsing to make XML files optional
863 See include/simgrid/platf.h for details (still to be completed)
866 * Major overhaul of the documentation. Almost instructive now :/
867 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
868 functions and friends. This interface was considered as
869 deprecated since over 2 years, it's time to inform our users that it is.
870 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
871 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
872 use these (crappy) functions in your code.
873 These functions will be removed soon. Stop using them now.
874 * Deprecate MSG_get_host_{table,number}
875 Implement MSG_hosts_as_dynar() instead.
876 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
877 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
880 * Stabilize the parallel execution mode of user contexts
881 * Introduce configuration variables to control parallel execution:
882 - contexts/synchro: Synchronization mode to use when running
883 contexts in parallel (either futex, posix or busy_wait)
884 - contexts/parallel_threshold: Minimal number of user contexts
885 that must be part of a scheduling round to switch to parallel
886 execution mode (raw contexts only)
887 * Fix bugs that prevented to use suspend/resume along with
888 synchronization structures.
889 * Fix bugs in process termination that lead to invalid memory access
890 in very specific conditions.
893 * Introduce a parallel mode for the models (controlled by surf/nthreads
894 configuration item). In our tests, running the models in parallel
895 never lead to any speedups because they are so fast that the gain
896 of computing each model in parallel does not amortizes the
897 synchronization costs, even when ultra fast futexes are used.
898 This is released anyway because YMMV.
901 * Performance boost by using a swag internally to compute the set of
902 tasks that are finished and should constitute the return value of
906 * Enable it by default now that it is considered rather stable.
909 * Documentation of the tracing functions.
910 * Performance gains when tracing categorized/uncategorized resource
911 utilization by avoiding calls to get route when updating resource
912 variables. LMM constraints are being used instead.
913 * API changed to set task categories. Use MSG_task_set_category instead
914 of TRACE_msg_set_task_category, and SD_task_set_category instead
915 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
916 * Bugfix for graphicator, routes not correctly obtained, memory leaks
917 * Examples for link user variables added (see at examples/msg/tracing/)
918 * Deprecated function TRACE_msg_set_process_category completely removed
919 * Trace header updated according to the latest Paje file format
920 * Tracing network lazy updates, no longer obligate users to use full updates
921 * --cfg=tracing/platform:1 also registers power/bandwidth variables
922 * Experimental: let user code declare/set/push/pop application states for hosts
923 * API changed to allow the manual creation of graph configuration files
924 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
927 * Improve the API of Lua MSG bindings, using the Lua spirit.
928 * Each simulated process now lives in its own Lua world (globals are
929 automatically duplicated). It helps writing simulators. Will allow
930 to run Splay programs within SimGrid in the future.
931 * Add a Chord example in Lua, equivalent to the MSG one.
934 * Start the implementation of a solution to express temporal
935 properties, not only local assertions. This is still an
936 experimental work in progress, stay clear from it to be safe.
940 - Add new runtime parameters --help-logs and --help-log-categories
941 to display information about supported logging parameters and
943 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
944 don't exists anymore.
945 * Mallocators: allow value NULL for the reset function.
947 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
948 create homogeneous dictionaries, where all the elements share the
949 same free function. Non homogeneous dictionaries will be
950 deprecated in the next release.
951 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
952 - Multi-level dictionaries are deprecated.
954 - new function xbt_dynar_search_or_negative() that is useful when
955 you have less than 2 million elements in your dynar and don't
956 want of the extra complexity of catching exceptions when the
957 element is not found.
959 - Make xbt_os_thread module (for thread portability) public.
960 Documentation is still to come, sorry.
962 - Cleanups and simplifications to make it maintainable again.
963 - Exotic features (such as memalign and valloc) were removed.
964 - The metadata were extended and improved so that the
965 model-checker becomes able to explore and inspect the heaps.
966 - This may induce a performance drop when enable_model-checking is
967 ON in cmake (even if it's not used in the simulation), but it is
968 necessary at this point to get MC working.
970 Turn model-checking OFF if simulation performance matters to you.
971 Not enabling it at runtime is not enough, disable it in cmake.
973 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
976 SimGrid (3.6.2) stable; urgency=low
978 The "Not coding new stuff allows to polish old things" release.
981 * New bindings to the NS3 packet level simulator (experimental)
982 * Use the raw (efficient) execution contexts instead of the sysv
983 (portable) ones when possible.
984 * libpcre is now mandatory in any cases since not using it led to
985 severe performance loss and possibly other issues
986 * Update the XML platforms:
987 - G5K: include the latest machine in Nancy
988 - GridPP and LCG: new platforms
989 * Documentation was partially updated, at least (more to come)
991 Bug fixes, cosmetics and small improvements
992 * Free terminated processes before the end of the simulation to avoid
993 exhausting the memory of users having very dynamic amount of
995 * Bug fix and cosmetics about canceling non-running tasks
996 * Bug fix about the dot loader's issues when using libcgraph
999 * Create an installer for windows with nsis (amd64 and win32)
1000 - Add an hello world project to illustrate simgrid project creation.
1001 - Embed libpcre into the Simgrid installer to avoid
1002 its compilation burden
1003 * The raw execution contexts should work on Apple now
1004 * Port to Windows 64 bits
1005 - Sysv contexts now have an implementation for this arch
1006 - GRAS communication features now support this arch
1007 * Drop support for borland compiler on windows
1008 - this code was not maintained, and we kinda depend on gcc nowadays
1009 * Fix portability issues on kfreebsd/gnu: build error about semaphores
1010 * Fix portability issue on unstable ubuntu: linker became picky on
1013 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1015 SimGrid (3.6.1) stable; urgency=low
1017 The "Oops, we broke Macs too" release
1020 * Fixed contexts detection so that raw ones are used when possible
1021 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
1022 leads to a strange error, with user code segfaulting sometimes when
1023 the generated code is not perfectly aligned (which is not
1024 controllable from the user side, depends on the amount of code)
1027 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
1029 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1031 SimGrid-java (3.6) unstable; urgency=low
1034 * Split of every thing from simgrid v3.5 into a separate package.
1036 -- 2011-10-05 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1038 SimGrid (3.6) stable; urgency=medium
1040 The Summer Release, also known as the "OMG! They Killed Kenny!" version
1043 * Bindings now constitute their own package, separated from the main one.
1044 Rationale: reduce our maintenance nightmare by reducing the module coupling
1045 They will soon be released on their own on gforge.
1047 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
1048 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
1050 GRAS: It is not considered as stable anymore, but experimental. Sorry.
1051 * It's not quite deprecated for now because we have no replacement,
1052 but it may soon become the case.
1055 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
1056 * Fortran: New user-level cache variable to store the rank of the running
1057 process. This improves performance by an order of magnitude.
1058 * C: New coccinelle script to automatically locate and modify global and
1059 local static variables.
1060 * Improved SMPI network model with a sender-side gap to account for multiple
1064 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
1065 only say if a communication is finished, no matter whether it succeeded or
1066 failed. You can call MSG_comm_get_status() to know the status of a finished
1068 * New function MSG_task_dsend() to send a task and detach it. When a
1069 communication is detached, you are never notified of its success or failure
1070 and the memory is released automatically once it is finished. This function
1071 is useful when you don't care about the end nor the success of a
1073 * Change the prototypes of action replay. Sorry for inconvenience,
1074 but this is really more efficient this way (and to adapt your code,
1075 you just have to fix the initialization, that shouldn't be too long)
1076 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
1077 ever managed to do anything useful with it.
1078 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
1079 takes a dynar of communications. It returns immediately and gives the
1080 index of a finished communication (if any).
1081 * New example: a basic implementation of the Chord P2P algorithm.
1084 * New model for multi-core CPUs. You can now use the core attribute to
1085 precise the number of cores of a host. This is a basic model. Every
1086 process running on the host receives at most the power provided in
1087 the DTD (throughput<=power). Total throughput of process cannot exceed
1089 * New peer tag. This peer tag creates a tiny AS comprising a host and a
1090 router linked by an up-link and a down-link (possibly asymmetrical).
1091 This kind of pattern allows to easily build last-mile model style platforms.
1092 Aggregating such patterns in a rule-based AS is thus the technique of
1093 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
1094 * New model for Vivaldi routing. We transformed the Vivaldi network model
1095 into a Vivaldi routing model (based on the rule-based model). This allows to
1096 combine Vivaldi based latencies with last-mile platforms.
1099 * Added a check for NaN of IEEE754 infinite in the double entries of
1101 * Introduce a new context factory "raw", highly inspirated from the
1102 ucontext factory, but using manually crafted functions in assembly to
1103 do the work in an efficient manner.
1104 * Allow to change the used context factory at run time, not only at
1105 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
1106 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
1107 contexts at runtime (only with raw contexts or ucontexts).
1108 * Completely rewrote this module to allow parallel execution of user
1109 processes. Use --cfg=contexts/nthreads:N to execute user processes
1110 with N parallel threads (the default is 1, meaning no parallelism).
1111 * Allow to decide dynamically between sequential and parallel modes.
1112 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
1113 processes in parallel only when their number is greater than or equal to P
1115 * Added a check for NaN of IEEE754 infinite in the double entries of
1119 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
1120 won't output the state of processes when interrupted with Ctrl-C
1121 * Add a new function xbt_dynar_to_array that transforms a dynar into a
1122 NULL-terminated array. This may solve backward compatibility issues
1123 due to the change to return type of SD_simulate. See also:
1124 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
1125 * Add new macros with variable number of arguments.
1126 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
1127 - in xbt/asserts.h: xbt_assert
1128 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
1129 - in xbt/ex.h: THROWF and RETHROWF.
1130 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
1132 * Change xbt_die() to accept a format string with arguments, just like printf.
1133 * New data structure: xbt_lib_t, like a dict but more general and with better
1137 * New configuration options
1138 Options triva/categorized and triva/uncategorized can be used to generate
1139 graph configuration files for Triva visualization tool.
1140 * Configuration option tracing/platform is renamed to tracing/categorized
1141 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
1142 * New TRACE_user_link_variable interface:
1143 User provides the name of the link and the tracing variable to attach to it
1144 * the declaration of tracing categories must be done after the environment
1146 * simpler tracing interface, just one way to declare categories
1147 TRACE_category or TRACE_category_with_color, it is up to you
1148 * links in the trace file are again identified by their names
1149 * trace contains the full platform hierarchy exactly as declared using the ASes
1150 * Options tracing/msg/[task|process]:1 groups the process by hosts
1151 for both cases, tasks and processes must have names that are unique during the simulation
1152 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
1153 * The experimental option tracing/msg/volume is deprecated
1154 its functionality may be reincorporated if needed
1156 The tracing generates a trace file with unordered timestamped events,
1157 because of the way the core simulator (surf) works. A script available
1158 at the tools directory (fix-paje-trace.sh) can be used to put the events
1159 in order. We have changed the tracing so it can generate ordered timestamped
1160 events in the final trace, but depending on the simulator (and how much time
1161 is simulated) that can lead to a huge memory utilization. It is deactivated
1162 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
1164 Build Infrastructure
1165 * Define a SIMGRID_VERSION macro in simgrid_config.h.
1166 - We are trying hard to keep the API stable, but it may happen that
1167 some things change (we're a research project after all, not a
1168 nuclear plant operating system). If such things should happen, you
1169 could rely on that macro to adapt.
1170 - current value: 30600 for 3.06.00, aka 3.6
1171 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
1172 a number that can be compared with SIMGRID_VERSION.
1173 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
1174 assertions and verbose/debug logging events are disabled at compile time.
1176 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1178 SimGrid (3.5) stable; urgency=medium
1181 * New feature to any SimGrid-based simulator: Model-Checking
1182 Check SIN#1 for more details.
1185 * New Model SMPI (three-interval linear regression for correction factors)
1186 See RR-7426, available at http://hal.inria.fr/inria-00527150
1187 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
1188 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
1189 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
1190 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
1191 * See also src/smpi/README
1196 - Tracing API changes: TRACE_start and TRACE_end should not be called
1197 by user-code. They are automatically called by simulators created
1198 with SimDAG, MSG and SMPI if the toolkit is compiled with
1199 tracing_enabled=ON. Categories declaration and utilization remain the
1200 same for MSG and SimDag.
1201 - A function was added to the tracing API to declare categories with
1203 - TRACE_category_with_color (char *category, char *color)
1204 where color must be in the following format
1205 "%f %f %f", red, green, blue
1206 and red, green, blue are float values in the interval [0, 1]
1207 - User can specify NULL as color parameter, or continue calling
1208 TRACE_category (cat)
1209 On that case, the tracing system will define random colors
1210 - The following command-line options are supported:
1211 --cfg=tracing/filename:msg.trace
1212 --cfg=tracing:1 (activate tracing, needed to use others)
1213 --cfg=tracing/platform:1 (categorized resource use)
1214 --cfg=tracing/uncategorized:1 (uncategorized resource use)
1215 --cfg=tracing/msg/task:1 (task creation)
1216 --cfg=tracing/msg/process:1 (process creation, migration)
1217 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
1218 --cfg=tracing/smpi:1 (SMPI interface tracing)
1219 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
1220 - examples of examples/msg/tracing updated
1222 - DAXLoader and DOTLoader functions can generate tasks with categories
1223 - A new function to attribute a category to SD tasks:
1224 TRACE_sd_set_task_category (SD_task_t task, char *category)
1225 * Tracing the MPI interface implemented by SMPI
1226 - Collective operations are traced with states
1227 - Point-to-Point operations are traced with states/links
1228 - Tracing activated by a parameter "-trace filename" passed
1229 to smpirun during execution (considering that simgrid
1230 is compiled with tracing enabled)
1231 - To run the simulation with gdb, the simulator
1232 accepts --cfg=tracing/smpi:1 to trace SMPI
1233 - tesh files to check if smpi tracing is ok
1234 - See examples/smpi/NAS/DT-trace
1235 * GTNetS tracing re-worked
1236 - adaptation to the tracing system of GTNets to cope
1237 with modifications regarding the fullduplex mode
1238 - new tesh files to check if gtnets tracing is ok
1241 * Asynchronous communications through the functions:
1242 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
1243 * New function: MSG_load_platform_script()
1244 to make possible using a lua script instead of XML files to set up platforms
1245 * New function: MSG_set_function
1246 to associate functions to processes, used when bypassing the parser
1247 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
1249 Platforms: Add some more examples in examples/platforms
1250 * Grid'5000: see www.grid5000.fr
1251 * *_30000_hosts.xml: various huge files [mainly scalability testing]
1254 * Change the XML format. This is a very important modification. SimGrid
1255 3.5 introduces a new hierarchical format based on the notion of
1256 Autonomous Systems. Compatibility with old format is ensured
1257 through the perl script provided in the install bin directory
1258 bin/simgrid_update_xml.
1259 It is now possible to build platforms with specific routing
1260 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
1261 connect several platforms together. We will try to provide soon
1262 set of realistic platforms exploiting these properties (have a
1263 look at examples/platforms/ for the moment).
1264 * Take the opportunity of the XML format change to be a good XML citizen:
1265 rename link:ctn to link_ctn and similar changes (also dealt with by
1267 * Add a new routing scheme (rule-based) using regular expressions. It
1268 enables to have an extremely low memory footprint when the
1269 underlying routing is simple and can be compactly described. You
1270 need to have libpcre4-dev (perl regular expressions) installed if
1271 you want to use this routing scheme.
1272 * Revive the cluster TAG and allow to easily and efficiently (both in
1273 term of memory and speed) connect clusters together. Have a look
1274 at teshsuite/simdag/platforms/ to see how this can be done. With
1275 this tag, you can create clusters with thousands of tasks at no
1276 cost (have a look at examples/platforms/).
1277 Note: clusters are implemented as ASes, so there is no need for an
1278 enclosing AS tag if you have only one cluster in your platform.
1279 * Add new generic functions in the public interface that allows the user
1280 to call SURF 'create_resource' methods from your code (same
1281 functionality as the XML bypass mechanism but with a much lighter
1283 * Add a new model (enabled through command line --cfg=network/model:SMPI)
1284 that uses a piecewise linear approximation to produce better
1285 results when exchanging small messages.
1286 * Add a new parameter to handle correctly full duplex link and account
1287 for interferences between uplink and downlink communications
1288 (activate with --cfg=fullduplex:1).
1291 * Rename the SD_READY (all dependencies are satisfied and task is
1292 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
1293 dependencies are satisfied) state.
1294 This prevents a confusion between the notion of "ready to schedule"
1295 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
1296 simulated" (SD_RUNNABLE) used by the simulation kernel.
1297 * Change the way a task is considered as ready. Instead of removing
1298 dependencies when a task is done, a counter is decreased. This way,
1299 it is always possible to reach ancestors thanks to the
1300 SD_taks_get_parents function (even after the end of the simulation.)
1301 * Change the return type of SD_Simulate from (SD_task_t*) into
1302 xbt_dynar_t. This function was in handling a dynar internally and
1303 converted it into a NULL terminated array for historical reasons.
1304 * New function SD_dotload(char*) to load a DAG described in dot
1305 format. This loader and the corresponding examples require the
1306 installation of the graphviz library.
1307 * Fix a bug in the management of tasks of size 0 in the surf network
1308 models. This problem was only visible with SIMDAG and you should
1309 thus disregard results produced with earlier versions if you
1310 relied on this feature (some tasks were blocked because of this).
1311 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
1312 even though your applications were doing only point-to-point
1313 communications and sequential computations. Now you can really use any
1314 model you want (of course, if you create real parallel tasks, which are
1315 not implemented in most models beside ptaskL07, this will abort).
1316 * Add an example that schedules a DAX on an heterogeneous platform
1317 using a Min-Min strategy.
1318 * New function SD_workstation_get_current_task() that returns the kind
1319 of task currently running on a workstation in the sequential access
1321 * Raise some warnings when unexecuted tasks remains at the end of the
1322 simulation. This is usually caused by cycles in the DAG.
1325 * New function: SIMIX_process_set_function() called by MSG_set_function
1326 * Change the underlying waiting queue in semaphores so that a process
1327 can wait on several of them simultaneously (as in waitany).
1328 * Fix the way to handle tokens in semaphores so that all access patterns
1329 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
1330 * kill the dirty pimple SIMIX_message_sizes_output()
1331 Please use (proper) visualization instead
1334 * New data container: setset (set of sets of elements)
1335 * New module: mmalloc (mapped malloc, allowing to have several
1336 independent segments of malloc)
1337 * New function: xbt_dict_cursor_set_data()
1338 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
1339 * New function: xbt_dynar_is_empty()
1340 * New function: xbt_fifo_get_last_item()
1341 * Fix xbt_dynar_shrink(): use the right element size.
1342 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
1343 uninitialized areas during expand.
1344 * Fix semaphores: previous implementation was severely broken.
1345 * Use library init/fini functions for our initialization.
1346 - you can use logs and other feature as soon as you want in your
1347 code (even before the xbt_init / MSG_init)
1348 - xbt_exit is now a no-op and produce a warning when used.
1351 * Port GRAS to new SIMIX mechanisms. This allows gras users to
1352 benefit from the latest improvement to the simulation kernel.
1353 * Kill measurement sockets for now. If you rely on them, sorry. This
1354 release is not for you. This feature will be reintroduced in the
1355 future, but we cannot delay the release any further.
1356 * New function: gras_msgtype_get_name().
1357 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
1358 * Fix (at last) the pmm example: it should not randomly fail anymore.
1360 Build chain: bug fixes and overall polishing
1361 * Cmake is now stable enough. Hence, we killed the autotools.
1362 * Port to windows ( TM :)
1363 * Fix the 'make install' target.
1364 No need to use 'make install-simgrid' anymore
1365 * Introduce a 'make dist' target compiling a *source* archive
1366 'make package' compiles a binary archive
1367 * Compile java files only on need
1368 * Add --cd and --setenv command line options to tesh
1369 * Out of source builds are not fully supported yet, but we are close
1370 * Enable supernovae and optimization flags by default for our users
1373 * Add layer to set up environment directly from lua, without XML.
1374 * The effect of gras_stub_generator can be achieved through
1375 lua too (check examples/gras/console/ping_generator.lua)
1377 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1379 SimGrid (3.4.1) stable; urgency=low
1381 The "Polishing easter eggs is probably a good idea" release.
1382 This is a bug fixes release only.
1386 * Fix a bug preventing the tasks from begin garbage collected.
1389 * Fix a bug occuring when a host involved in a communication fails.
1390 This was not detected properly by the other peer involved in the
1391 communication. Now, it's reported as a network error.
1394 * Warn the user about loop dependencies in data flow of DAX files
1395 * Obey the control-flow dependencies of DAX files
1398 * Add option "enable_smpi" allowing to not compile SMPI.
1399 Probably useful for the (Mac) users experiencing a build error here
1400 * Improve the detection of lua5.1 and ruby1.8
1402 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
1404 SimGrid (3.4) stable; urgency=low
1406 The "Easter in Cargese" release. Also known as (major changes):
1408 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
1409 ~> bindings were greatly improved
1410 ~> new tracing infrastructure for better visualization introduced
1412 * the "Welcome to configury modernity" release.
1413 ~> we switched from autotools to cmake, and improved our cdash
1416 A more detailled list of changes follow (full detail in svn log).
1418 Java Bindings: Various Cleanups
1419 * (install java-gcj-compat-dev on debian-like to use them)
1420 * Remove put/get: no need to export deprecated interface in Java
1421 Use send/receive instead.
1422 * Cleanup the examples and add a README per directory
1423 * Remove example autoDestination (that's the only way to go now)
1424 * Remove example explicitDestination (was a plain copy of basic)
1425 * Make JniException a runtime exception, so that there is no need to
1426 declare the fact that you may encounter such a beast. I guess that
1427 nobody will ever want to survive such error.
1428 * Create specific errors for each MSG case of failure:
1429 host failure, transfer failure, timeout, task cancelled
1430 * Cleanup the exceptions that may get thrown by each function
1431 * Other internal cleanups in Java bindings. Performance still bad :/
1432 Ruby and Lua Bindings: create them
1433 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
1434 * That's new and great, you should try them out.
1435 Same functionalities than Java bindings, only even less polished
1437 * Kill the useless "rate" argument of SD_task_get_execution_time()
1438 Everyone used to provide -1 as a value, it was not used, and the
1439 semantic of a possible use wasn't even clear.
1440 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
1441 either as comm costs or compute costs to mean that there is no
1442 such thing for that specific task.
1443 * Add a SD_task_set_name() function
1444 * Fix SD_task_unschedule() on typed tasks
1445 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
1446 * In DAX loader, accept useless 'level' attributes to <job> since
1447 LIGO DAGs have them (seem to be to ease graphical representation).
1449 * Add an example masterslave_mailbox.c using send/receive and not
1450 the deprecated put/get interface.
1451 * Kill the MSG_paje_output() function. It's a noop since 2 years.
1452 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
1454 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
1455 (declare MSG_USE_DEPRECATED to still have the old name)
1456 * Add a MSG_task_set_data() function
1457 * About trace replay (see examples/msg/actions):
1459 - Allow to work with splitted trace files for each process
1460 Give the specific trace file as argument of each process,
1461 and call MSG_action_trace_run(NULL)
1462 You can still have one merged file for all processes.
1463 - Fix implementation of collective operations
1464 * Allow task_execute() on 0-sized tasks (closes #10063)
1466 * This is the first release of SimGrid where SMPI is not considered
1467 beta anymore (even if some corners should still be improved)
1468 * Port over the new SIMIX_network submodule (internal refactoring)
1469 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
1470 * Implement more missing elements of the standard:
1472 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
1474 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
1475 MPI_Scan() MPI_Get_processor_name()
1476 - Added implementation of missing case for Alltoall (warning: it's
1477 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
1478 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
1479 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
1480 SMPI_MPI_Allgatherv()
1481 * Bug fixes include:
1482 - MPI_Waitsome() was broken
1483 - Allow relative includes in smpicc
1484 - Command line cfg argument 'reference_speed' was ignored...
1485 - Some functions did not properly lead to auto-benching of user code
1486 - smpicc passes -O2 by default (just like openmpi one)
1488 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
1489 * Bug fixes about timeouts during communications
1490 * add SIMIX_message_sizes_output() as a pimple to write to file the
1491 amount of messages per size. Use gnuplot to get histogram.
1492 Pimple because that's the only user-visible function of simix,
1493 defined directly in xbt.h (irk, sorry)
1495 - Add a SIMIX_sem_get_capacity() function
1496 - Fix interactions with processe resume/suspende
1497 - release_forever() was stupidly broken
1498 - Fix SIMIX_display_process_status() for processes in a semaphore
1499 - Make SIMIX_sem_block_onto() user-visible
1500 * Refactoring context stuff:
1501 - Use pseudo-OOP for better modularity
1502 - reimplement SIMIX_process_kill() without process_schedule() so
1503 that the latter can take as invariant that it is called from
1505 - Merge context_start into context_new for sake of simplicity
1507 * Add a Vivaldi network model, coded live during SUD'10 ;)
1508 * Rename configuration variables to start a hierarchy:
1509 o cpu_model -> cpu/model
1510 o network_model -> network/model
1511 o workstation_model -> workstation/model
1512 * New configuration variables:
1513 o network/bandwidth_factor: correction to bandwith
1514 o network/latency_factor: correction to latency
1515 o netwotk/weight_S: correction to the weight of competing streams
1516 * Add a long description to the models, that users can see with such
1517 argument on the command line: --cfg=cpu/model:help
1518 * --help-models display the long description of all known models
1520 * config: add the ability to set a default value after registration
1521 Does not override any previously set value (e.g. from cmd line)
1522 * dict: allow to have integer key and data.
1523 When so, you need to use the following functions
1524 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
1525 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
1526 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
1527 In contrary to regular dicts, the key is not malloced before copy.
1528 Mixing scalar and regular elements in the same dict is not tested
1530 * Allow to use xbt_dynar_shrink() to expend the dynar instead
1531 Tracing for Visualization:
1532 * SimGrid is now instrumented in order to generate a trace file for
1533 visualization analysis: to use it, need to compile SimGrid with the
1534 "tracing" option enabled, and instrument the program using SimGrid with
1535 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
1536 (among other functions).
1537 * The instrumentation only traces the platform utilization for now
1538 * Documentation to use the tracing functions and how to analyze the
1539 traces with the Triva tool is written.
1540 * More information about: SimGrid FAQ (in the section Tracing Simulations
1543 * We moved to cmake as default build system. Autotools support will
1544 be dropped soon. Check the FAQ for more info about how to use it.
1545 * Greatly improved our cdash/ctest interactions
1546 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
1547 * Added memory checking tests with valgrind; lot of memleak fixing.
1548 This may be the first release of simgrid with so few memory issues
1549 * Added code coverage tests.
1550 Our coverage is still improvable, but at least we see it on cdash.
1552 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
1554 SimGrid (3.3.4) stable; urgency=low
1556 The "Desktop Grid needs love too" release (also called Xmas release).
1558 Models improvements:
1559 * Major speedup in the maxmin system solving by using lazy evaluation
1560 Instead of solving completely the maxmin system at each iteration,
1561 only invalidate (and recompute) the modified parts.
1562 This new feature is enabled in default models but you can try to
1563 turn it on with "--cfg:maxmin-selective-update=1" for other models.
1564 * Cas01 IMproved as default CPU model
1565 This CPU model is the same Cas01 model, but it uses the
1566 maxmin-selective-update flag and a heap structure to manage
1567 actions on SURF kernel.
1568 It reduces the complexity to find the next action to finish and,
1569 consequently, it's faster than the old Cas01.
1570 This is the new default CPU model (Cas01).
1571 * Rename the old Cas01 model to Cas01_fullupdate
1572 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
1573 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
1574 * CpuTI (CPU Trace Integration)
1575 A new CPU model whose objective is simulate faster when using
1576 availability trace files.
1577 Instead of using a full featured, over engineered maxmin system for
1578 CPU modeling, this model does the pre-integration of traces files
1579 to calculate the amount of CPU power available, and so, executes
1580 faster than the old CPU models.
1581 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
1582 * Use LV08 as default network model since it gives better accuracy
1583 for small messages and shouldn't change things for big ones.
1584 Use --cfg=network_model:CM02 to get the previous behavior.
1587 ******************************************
1588 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
1589 ******************************************
1590 * The new CPU model may changes simulations!
1591 The point is that events occurring at the exact same timestamp
1592 are not scheduled in the same order with the old and new
1593 version. This may be enough to completely change the execution
1594 of simulations in some cases.
1595 * The new network model will change simulations!
1596 This new model is more realistic than the previous one, so you
1597 should consider redoing your old experiments with this model.
1598 Sorry for the inconvenience.
1601 * Introduce the supernovae compilation mode
1602 When compiled that way, the whole SimGrid (or almost) is put in a
1603 single compilation unit and compiled in one shoot.
1604 This is to help gcc which has difficulties to inline stuff from one
1606 The speedup seem to be above 15%, althrough more tests are needed on
1607 amd64 to confirm that gain.
1610 * Port of MSG's mailbox on top of SIMIX network
1611 The put/get mechanism was greatly simplified on the way.
1614 * New SIMIX network module. Provides:
1615 - Mailbox: rendez-vous mechanism to find with who you want to speak
1616 - Synchronous send/recv: easier and hopefully faster since the
1617 logic is handled in the maestro process directly now
1618 - Asynchronous send/recv: you dreamt of it? It's here now
1619 Too bad that nobody cared enough to propagate the change to MSG.
1620 * Add semaphores as SIMIX synchronization mechanism.
1623 * new function SD_daxload(char*) to load a DAX file
1624 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
1625 * Introduce typed tasks. Specify its kind and cost at creation.
1626 At scheduling, just give where it should be placed, and the cost
1627 for each involved resource is automatically computed.
1628 Existing constructors so far (more to come of course):
1629 - SD_task_create_comm_e2e() for end-to-end communication
1630 - SD_task_create_comp_seq() for sequential computation
1631 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
1632 * new function SD_task_dump() for debuging display
1633 * new function SD_task_dotty(task,FILE*) writing to file the info
1634 about the task in dotty format
1635 * SD_task_dependency_exists() can now cope with having one of its
1636 arguments NULL. If so, it tests whether the other argument has any
1638 * Add getters on list of preceding/following tasks:
1639 SD_task_get_parents(task) and SD_task_get_children(task)
1640 * Add getters on amount of workstations and list:
1641 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
1642 * Add getter on task kind: SD_task_get_kind(task)
1643 * Update the start_time and finish_time of tasks on completion/failure
1644 * Bugfix: Remove task from state swags when destroyed
1647 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
1650 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
1651 dynar with one separate thread per value of the dynar.
1652 * Change the prototype of xbt_thread_create(), sorry.
1653 Added a boolean parameter indicating whether we want to join this
1654 thread (used in SG only for now)
1655 * Implement xbt_thread_join and xbt_thread_yield in SG also.
1658 * GTNetS wrappers should now be usable again (and betterly tested too)
1659 * Fix a major regression from 3.2 where the timeout provided to
1660 MSG_task_put_with_timeout() was used as absolute time before which
1661 the comm should be done.
1662 * Start to fix the <cluster> tag.
1663 - Internal links should be good now (beside of the loopback, which
1664 use the private link instead)
1665 - paths to the external world is still rather broken
1666 - the <route:multi> tag is just broken. Actually that's brain-dead.
1667 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
1668 to make it less stupid
1669 ** Check your platform with teshsuite/simdag/platforms/flatifier **
1670 * Fix a source-level compatibility glitch from 3.2: after defining
1671 MSG_USE_DEPRECATED, you can use the old name
1672 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
1673 * Allow to compile from the SVN with automake 1.11
1674 * Fix some problems when using the "start_time" tag in deployment XMLs.
1675 * Fix #8569: XBT/synchro.h has redundant declarations
1676 * Fix #8563: MSG return values and exceptions
1677 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
1678 * Integrate patch #8636: Obey DESTDIR when installing documentation.
1679 Thanks to Robson Peixoto.
1680 * Fix a vicious bug in dictionaries inducing that some elements were
1681 not freed on xbt_dict_free()
1683 Portability report of this version:
1684 * Main portability targets:
1685 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
1686 on (amd64/i386/ia64)
1687 - mac leopard on i386
1688 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
1689 but nothing critical.
1690 * Other platforms: windows, AIX and others were not tested for this release
1692 Timing report of this version:
1693 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
1694 scenario parameters). From 8h to a few seconds in desktop grid settings.
1695 * Supernovae brings about 25% speedup on i386.
1697 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
1699 SimGrid (3.3.3) stable; urgency=low
1701 The "Need for Speed" release.
1703 The timings done to validate the 3.3.2 were faulty.
1704 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
1706 The problem was a conversion from a manually handled vector to
1707 xbt_dynar_t on the critical path.
1708 xbt_dynar_foreach calls functions, inducing stack management crap.
1710 We inlined these functions and xbt_dynar_foreach is now breath taking.
1711 We also inlined xbt_swag_belong on the way.
1713 Here are some approximate speedup measurements (on master/slaves
1714 simulations lasting between 10s and 20s each):
1715 3.3.1 -> 3.3.2: about same performance
1716 3.3.2 -> 3.3.3: 40% speedup
1717 3.3.1 -> 3.3.3: 40% speedup
1718 3.3.1 with inline patch -> 3.3.3: 30% speedup
1720 Our reading is that the refactoring which occurred in 3.3.2 made us
1721 suffer much more from the xbt_dynar_foreach low performance, but
1722 once we solved this, this refactoring proved to be very performance
1723 effective. From the 40% speedup, somehow, 10% are due to the
1724 inlining and 30% to the refactoring.
1726 That's a pitty that gcc cannot inline functions placed in other files
1727 alone. We have to choose between:
1728 - break the encapsulation (by putting private data structures and
1729 accessors in headers files to help gcc)
1730 - live with low performance
1731 - switch to a decent compiler such as icc (not quite possible).
1733 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
1735 SimGrid (3.3.2) stable; urgency=low
1737 The "Simplicity does not preceed complexity, but follows it" release.
1739 The main contributors of this release were (lexical order):
1740 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
1743 * Extract the routing logic into its own object.
1744 (was dupplicated in network.c and workstation_LV07.c;
1745 Allows to implement other ways of storing that info)
1746 => kill now useless network_card concept
1747 - Use dynar to represent routes (instead of void** + int*)
1748 - kill link_set (use surf_network_model->resource_set instead)
1749 - Add a command-line option to choose the routing schema to use
1750 - Add three new models:
1751 * Floyd (shortest path computed at initialization)
1752 * Dijikstra (shortest path recomputed all the time)
1753 * Cached Dijikstra (shortest path computed on need)
1754 All these models where contributed by Silas De Munck, and are
1755 described in his ICCS09 paper.
1757 * Simplify model declaration
1758 (less redirections, less function to write when defining a model)
1759 - Factorize stuff between models:
1762 surf_model_resource_set(model)
1763 surf_model_resource_by_name(model, name)
1764 - Unify the types of models in s_surf_model_t (using an union)
1765 - Embeed fields of common_public directly into s_surf_model_t
1766 - Rename model methods:
1767 action_free ~> action_unref
1768 action_change_state ~> action_state_set
1769 action_get_state ~> action_state_get
1770 - Change model methods into functions :
1771 (model)->common_public->action_use ~> surf_action_ref
1773 * Implement a generic resource; use it as ancestor to specific ones
1774 (allows to kill duplicated code in models)
1775 Drawback: timer command don't need no name nor properties;
1776 workstation_CLM03 don't need no properties
1777 (but I guess we can live with those few bytes wasted)
1779 * Improve the action object model
1780 - implement a constructor avoiding dupplicated code about field
1781 initialization in generic_action part.
1783 * Kill the SDP model: it has an external dependency, is deprecated
1784 in flavor of modern lmm models, and didn't compile since a while
1787 * Relocation of the context module from XBT to SIMIX.
1788 (the context were decoupled from the simix processes, duplicating a lot of code)
1789 => a lot of code was factorized
1790 - less overhead is introduced during scheduling
1791 - simpler API for the context factory
1792 - the logic for process creation,destruction and manipulation was simplified
1793 * Simplification of the s_smx_process_t data structure.
1794 => accesing the simix level data associated to a process is faster now,
1795 and the code is a lot more readable.
1798 * Implement some more MPI primitives:
1799 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
1800 -implementation: Bcast: flat or 2-ary tree (default),
1801 Barrier: 4-ary tree,
1803 Allreduce: Reduce then Bcast
1804 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
1805 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
1806 Alltoallv: flat tree, like ompi
1808 * Add support for optimized collectives (Bcast is now binomial by default)
1809 * Port smpirun and smpicc to OS X
1812 * Kill SD_link_get_properties: hard to maintain and makes very little sense
1813 Shout out if you used it.
1816 * Display the list of still queued messages in SG mode when existing
1820 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
1821 * Add xbt_graph_node_get_outedges() [Silas De Munck]
1822 * Add xbt_str_from_file(FILE*)
1823 * Add xbt_dict_get_key achieving a linear reverse search
1824 * Remove the context module
1826 Portability report of this version:
1827 * Main portability targets:
1828 - Linux(debian)/x86/context
1829 - Linux(debian)/x86/pthreads
1830 - Linux(debian)/amd64/context
1831 - Linux(debian)/amd64/pthreads
1832 On these, we still have the eratic breakages of gras/pmm and
1833 amok/saturate_sg reported in previous version. We still think
1834 that the tests are the cause of the fault, not the tested code.
1836 - Mac OSX Leopard/x86/context
1837 Still false negative in tesh autotesting.
1838 Smpi still fails, but this time because readlink does not accept -f
1839 Everything seems to work properly beside of that.
1842 - AIX version 5.3 (only tested contexts this time)
1843 Smpi still fails there because mktemp is not installed.
1844 Everything seems to work properly beside of that.
1846 I managed to compile it for the first time, but several breakages.
1847 Won't delay the release for this exotic platform.
1849 * Windows: it's still lagging behind. If you want to help, please
1852 Timing report of this version:
1853 This version seem to be more than 5% faster than 3.3.1 (on linux
1854 64bits with contextes). The gain is less than expected, we are
1855 investigating this for next release.
1857 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
1859 SimGrid (3.3.1) stable; urgency=low
1862 * Implement a --cfg-help to show existing configuration variables
1863 * Build chain do not require doxygen in maintainer mode
1866 * fix a bug on struct sizeof computation, which prevented the
1867 exchange of arrays of structs in some conditions
1868 - added a regression test about this in datadesc_usage
1869 * Allow the exchange of 0-long dynamic vectors.
1870 - for that, use -1 as indicator of dynamic size instead of 0
1871 - This implied to change any size from unsigned long to long,
1872 reducing a bit communication abilities, but I guess that with
1873 64bits being quite common, this is more than enough.
1874 - This also induce a protocol change, thus bumping network protocol
1875 version from 0 to 1 (if we have external users, we have to get
1876 clean on that point too ;)
1877 - added two regression tests about this in datadesc_usage
1878 * Be more verbose when propagating local exceptions
1879 This helps debugging.
1880 * Display the status of simulated processes when receiving SIGINT in
1884 * Allow to control the simulation from a trace file.
1885 New functions MSG_action_register() and MSG_action_trace_run()
1886 The first one allows to associate a function execution to each
1887 kind of action while the second one parses a trace file and
1888 triggers the corresponding actions within the system.
1889 For now, only a toy example is provided in examples/msg/actions
1890 * Add an exemple of process migration in examples/msg/migration
1891 * Fix a bug in task exchange which broke MSG_task_get_sender()
1892 Add a teshsuite regression test for that.
1893 [Bug: if MSG_task_get_sender() is called after sender exit,
1895 * Fix a bug which prevented suspend/resume to work properly
1896 * Display the status of simulated processes when receiving SIGINT
1897 This fixes a regression of v3.3. due to the introduction of SIMIX
1898 * Bug fixing in failure management:
1899 - trace could not start by a failure at time 0
1900 - failure during communications were not working
1903 * Add SIMIX_process_set_name() to change the name of the current
1904 process in the log messages.
1905 * Store smx_hosts in a dict since we only retrieve them by name
1906 * Move the configuration infrastructure to surf
1909 * Move the configuration infrastructure to surf
1912 * Massive internal cleanups:
1913 - Store internal structures on processes instead of hosts (allows
1914 to have more than one process per host, in addition of being more
1916 - Cleanup the initialization/finalization process
1917 - Kill a whole bunch of unneeded synchronization:
1918 processes run in exclusive manner within the simulator
1919 - Move queues from global tables to process data fields
1921 - now accept -platform and -hostfile arguments
1922 - Pass the right rank value to processes according to the hostfile
1923 * Compile the examples by default, and use them as regression tests
1924 * Implement MPI_Wtime()
1925 * Change the reference speed to a command line option
1928 * TCP_gamma can now be specified as command line option using
1929 --cfg=TCP_gamma:10000000.0
1930 * Change the --surf-path cmd line option into --cfg=path:
1933 * Also include strbuff from xbt.h public header
1934 * xbt_ex_display(): do not free the exception after displaying
1935 This allows to do more with the given exception afterward.
1936 Users should call xbt_ex_free() themselves.
1940 Portability report of this version:
1941 * Main portability targets:
1942 - Linux(debian)/x86/context
1943 - Linux(debian)/x86/pthreads
1944 - Linux(debian)/amd64/context
1945 - Linux(debian)/amd64/pthreads
1946 These targets fail about 1/10 of times on gras/pmm, but we believe
1947 that this is because of the test, not because of simgrid.
1948 amok/saturate_sg fails even more rarely, and the test may not be
1951 - Mac OSX Leopard/x86/context
1952 The test suite still spits tons of errors because some obscure
1953 force prevents us from removing the temporary directories
1954 arguing that they still contain some metadata I've never heard of.
1955 Smpi fails because seq is not installed.
1956 Everything seems to work properly beside of that.
1959 - AIX version 5.3 (both contexts and pthread)
1960 Smpi still fails there because mktemp is not installed.
1961 XML inclusions seems rosty on AIX.
1963 * Windows: it's still lagging behind. If you want to help, please
1966 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
1968 SimGrid (3.3) stable; urgency=high
1972 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
1973 [Malek Cherier & Mt]
1975 * Introduce the SIMIX module: factorize code between MSG and GRAS.
1978 Until now, GRAS were using MSG as an interface to SURF. It was
1979 quite difficult because both interface have several differences
1980 (MSG channels vs GRAS sockets were the most notable point).
1982 This also opens the gate to SMPI (which should occur soon) and speed
1983 up simulations by to 40% (even if it were not the main goal).
1985 **************************************
1986 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
1987 **************************************
1988 The point is that events occuring at the exact same timestamp are
1989 not scheduled in the same order with the old and new version. This
1990 may be enough to completely change the execution of simulations in
1991 some cases. Sorry for the inconvenience.
1993 * Cleanup and upgrade the XML format to push further scalability
1994 issues (check http://hal.inria.fr/inria-00256883/ for more info)
1996 * Improve the testing infrastructure with tesh. Now a very large part of
1997 the code is tested not only by being run but also by checking that the
1998 output match an expected output [Mt].
2000 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
2001 is really less memory-demanding, which should allow you to use
2002 larger files in SimGrid [AL].
2004 * Inform valgrind about our contextes, so that it becomes usable
2005 with the default (and more effecient) version of SimGrid
2006 [contributed by Sékou Diakite, many thanks]
2009 * Introduce a listener thread in charge of receiving incoming
2010 messages from the network. It allows to overlap communication and
2011 computation but most notably, it removes some stupid deadlocks due
2012 to the fact that so far, a process could not send and receive at
2013 the same time. This made most non trivial communication schema
2015 * Convert the PIDs from long int to int to match the MSG ones (and
2016 linux ones too) [Mt]
2017 * New function: gras_agent_spawn() to launch a new process on
2018 current host. Only working in simulation for now. [Mt]
2019 * New function: gras_os_hostport() returning a constant form (ie,
2020 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
2023 * Make the backtrace of exceptions more human readable [Mt]
2024 * New module: xbt/str [Mt]
2025 a ton of string utility functions (split, join, printf to a newly
2026 allocated buffer, trim, etc)
2027 * New module: xbt/hash [Mt]
2028 SHA1 hashing algorithm (more to come if needed)
2029 * New module: xbt/synchro [Mt]
2030 synchronization tools (mutex and conditions) working the same way
2031 in simulation and in real life (mainly useful for GRAS, but not
2033 * New module: xbt/queue [Mt]
2034 classical producer/consumer synchronization scheme
2035 * xbt_dynar_new_sync() creates a synchronized dynar. All access
2036 (using the classical functions will get serialized) [Mt]
2037 * Make dictionary internal table dynamic. No need to specify its size
2038 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
2040 * Make sure the log channels are organized as a tree under windows
2041 (because of ANSI C compatibility issue, any channel were child of
2042 root directly) [Mt].
2045 * Cleaned many thing in surf and fixed a few bugs [AL].
2046 * Add a nice command line configuration mechanism to compose models [AL].
2047 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
2048 the previous one (KCCFLN05). It relies on something that looks like
2049 a max-min sharing mechanism but cannot be written as such. A new solver
2050 was thus designed [AL].
2051 * Add a new solver to lmm. Based on Lagrange optimization and
2052 gradient-based descent, it enables to efficiently maximise systems s.a
2054 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
2056 This solver enables to propose two new network models for TCP Reno and
2057 TCP Vegas based on Low's work. These models still need to be fully
2058 tested though [Pedro Velho].
2061 * Bug fix in SD_simulate. Now the time bound given as argument is
2063 * Use the new parallel task model (ptask_L07) as default.
2064 * Use the SURF command line configuration mechanism.
2065 * 0-size tasks (for synchronization) should now work.
2067 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
2069 SimGrid (3.2) stable; urgency=high
2073 We still experience issues on this platform, but we believe that at
2074 least MSG is usable.
2076 GRAS API BREAKAGE (for simplification purpose, sorry):
2077 * the gras_msgtype_by_name is not used anymore. Instead of
2078 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
2079 you can write (and must)
2080 gras_msg_send(toserver, "request", &request);
2081 - If you still want to pass a gras_msgtype_t to the function (to cache
2082 the type and avoid the lookup time), use the gras_msg_send_() variant.
2083 - Impacted functions:
2084 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
2085 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
2086 * The callbacks are now expected to return 0 when everything went well
2087 (just like the main() function)
2089 GRAS new features and improvements:
2090 * New module mechanism where user code can use per process globals [Mt]
2091 This is similar to gras_userdata_*() functions, but for libraries. It
2092 factorize some code developped over and over in the examples and AMOK.
2093 It has still to be documented and used (only amok/peermanagement is
2095 * Fix a vicious bug in the TCP buffering mechanism which leaded to message
2096 loss when they were small enough to fit into the buffer and sent quickly
2097 enough so that they can all get received in one shoot.
2098 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
2099 if not found. Use the *_or_null() variant for the old semantic.
2100 * In gras_msg_handle, do not discard messages without callback.
2101 They are probably messages to be explicitly awaited later (ie, proofs of
2102 mis-synchronization in userland since they are sent before being awaited)
2103 No big deal usually.
2104 * gras_socket_meas_send/recv: semantic changed!
2105 The numerical arguments used to be (1) the total amount of data to send
2106 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
2107 messages. This was need for the fool willing to send more than MAXINT
2108 bytes on quite fat pipes.
2111 * Do really rename the hostmanagement module to peermanagement. [Mt]
2112 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
2113 but this is rather new and this was documented in the module
2114 documentation (poor excuses, I admit)
2115 * Bandwidth measurement semantic changed! This follows the changes to
2116 gras_socket_meas_send/recv explained above.
2119 * A sequential mode has been added to the workstations. When a workstation
2120 is in sequential mode, it can execute only one task, and the other tasks
2121 are waiting in a FIFO. [Christophe Thiery]
2124 * The KCCFLN05 workstation model now handles parallel tasks. It is the
2125 model for SIMDAG. [Christophe Thiery]
2126 * Bug fix in the maxmin solver: Some values were close to 0 instead of
2127 equal to 0, which caused some bad behaviors in
2128 saturated_constraint_set_update. I now use a threshold mechanism like in
2132 * When running manually src/testall, you select specific units [Mt]
2133 testall is the result of our cunit mechanism, and should replace all
2134 the scripty thingy around since bash don't run easily on billware.
2136 * A mallocator system has been added. [Christophe Thiery]
2137 Mallocators allow you to recycle your unused objects instead of freeing them
2138 and allocating new ones.
2140 Documentation update:
2141 * FAQ reworking + New FAQs:
2142 - "Valgrind spits tons of errors!" [Mt]
2143 - "How to repport bugs" [Mt]
2144 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
2145 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
2146 - Communication time measurement within MSG [AL]
2147 - I experience weird communication times when I change the latency [AL]
2148 * GRAS tutorial [Mt]
2150 - an introduction to the framework and to the used communication model
2151 - an initiatic tour introducing the most proheminent features:
2153 . Lesson 0: Installing GRAS
2154 . Lesson 1: Setting up your own project
2155 o Part 2: Message passing
2156 . Lesson 2: Exchanging simple messages
2157 . Lesson 3: Passing arguments to the processes (in SG)
2158 . Lesson 4: Attaching callbacks to messages
2159 . Lesson 5: Using globals in processes
2160 . Lesson 6: Logging information properly
2161 . Lesson 7: Using internal timers
2162 . Lesson 8: Handling errors through exceptions
2163 . Lesson 9: Exchanging simple data
2164 . Lesson 10: Remote Procedure Calling (RPC)
2165 . Lesson 11: Explicitely waiting for messages
2166 . Recapping of message passing features in GRAS
2167 - A HOWTO section containing:
2168 o HOWTO design a GRAS application
2169 More are due, of course. They will come latter. In the meanwhile, you can
2170 check the examples which are still here.
2172 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
2174 SimGrid (3.1) stable; urgency=high
2178 There was a stack corruption somewhere, visible only when optimizing
2179 with these versions. [Vince]
2182 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
2183 module that enabled to play with Directed Acyclic Graphs. It is built
2184 directly on top of SURF and provides an API rather close to the old
2185 SG. Some old codes using SG are currently under rewrite to check that
2186 all needful functions are provided. [Christophe Thiery]
2189 * Complete rewrite of the KCCFLN05 workstation model. It is now an
2190 extension of the classical CLM03 model that gracefully handles
2191 failures. This is now the default model for MSG and GRAS. It doesn't
2192 handle parallel tasks yet though. [AL]
2193 * Bug fix: Weights were not correctly set in the network part.
2194 WARNING: This may have resulted in incorrect results with simulations
2195 where there are more than one flow on a given link. [AL]
2198 * After a (long ?) discussion on simgrid-devel, we have decided that the
2199 convention we had on units was stupid. That is why it has been decided
2200 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
2201 WARNING : This means that all previous platform files will not work as
2202 such with this version! A warning is issued to ask users to update
2204 A conversion script can be found in the contrib module of the CVS, under
2205 the name contrib/platform_generation/surfxml_update.pl [MQ]
2208 * Bug fix: Processes were started in reverse order, wrt deployment file.
2209 WARNING: if your code relies on this bug, please fix it. [AL]
2210 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
2211 being executed on two different locations. [AL]
2212 * Bug fix: Failures are now better supported thanks to Derrick's tests
2213 (there was many failure situations I hadn't thought of and that weren't
2214 correctly handled). [AL]
2215 * New function: MSG_host_is_avail indicates you whether a given m_host_t
2219 * New! a real RPC mechanism, as it ought to be since too long. [MQ]
2220 Exception occurring on server-side are propagated back to client (!).
2222 API CHANGE: the callback changed their prototype. Change:
2223 int my_handler(gras_socket_t expeditor, void *payload_data) {
2225 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
2226 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
2228 * New! function: gras_msg_handleall to deal with all messages arriving
2229 within a given period.
2230 * New! function: gras_socket_server_range to get a server socket in a
2231 range of port numbers (ease to avoid port number conflicts) [MQ]
2232 * New! gras processes display their backtrace when they get a SIGUSR1
2233 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
2234 Sweet to debug RL processes [MQ]
2238 - Do not force experiment sizes to be expressed in kb, or it becomes
2239 impossible to measure the latency this way (needs one byte-long tests)
2240 WARNING: this changes the amok_bw_* function semantic. [MQ]
2241 - Implements the link saturation stuff. [MQ]
2242 * Peer management module:
2243 New! module factorizing code that we wrote over and over [MQ].
2246 * New module: cunit (my jUnit implementation in ansi C) [MQ]
2247 - Test units are placed directly into the library code, they get extracted
2248 automatically and placed into the src/testall binary.
2249 - Convert most of the XBT tests to this system.
2250 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
2251 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
2252 live in the same C code. This required to change a little bit the API
2253 of surfxml parsing but shouldn't be an issue for end-users. [AL]
2254 * New module: sparse graph structure with basic algorithms (this is work
2255 in progress and the API is not considered to be frozen yet). [AL]
2256 * Display more information on backtraces: source line & function names are
2257 now displayed just like valgrind does (rely on addr2line tool) [MQ]
2258 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
2259 * Reworked a little bit some #include statements to load only required
2260 headers. Some user code that relied on SimGrid to include stdlib or
2261 stdio may need to include it by themselves. [AL]
2262 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
2264 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
2265 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
2266 but I guess that almost nobody used those parts. [MQ]
2268 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
2270 SimGrid (3.0.1) stable; urgency=low
2273 * Unfortunately, I had missed 5 misnamed functions:
2274 xbt_fifo_item_t xbt_fifo_newitem(void);
2275 void xbt_fifo_freeitem(xbt_fifo_item_t);
2276 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
2277 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
2278 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
2279 They're now deprecated. Please use their new versions:
2280 xbt_fifo_item_t xbt_fifo_new_item(void);
2281 void xbt_fifo_free_item(xbt_fifo_item_t);
2282 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
2283 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
2284 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
2286 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
2287 * Documentation: xbt_log module unmercifully reworked [MQ]
2288 * Bugfix: there was a problem with the ending of contexts with
2289 the pthread backend. It caused some weird deadlock or behavior
2290 depending on the pthread implementation. [AL]
2291 * Bugfix: get the exceptions raised in the simulator repport where
2292 and why they come from when they are not catched in time [AL, MQ]
2295 * Bugfix: Do repport the error when two non-connected hosts try to
2296 exchange data (Thanks to Flavien for stumbling into this one) [AL]
2299 * Add additionnal checkings on communications. Assert that two
2300 communicating hosts are connected by a set of links... [AL]
2303 * Add additionnal checkings on channel values in communication [AL]
2304 * New: MSG_task_get_source to see on which host a task was generated [HC]
2305 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
2306 the number of tasks waiting to be received on channel and sent
2308 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
2309 waits for the first task coming from a given host.. [AL]
2311 GRAS new functionnalities: [MQ]
2312 * Enhance the parsing macro to allow the size of multidimentional objects
2313 to be given thru annotations.
2314 * New example (and documentation): Matrix Multiplication a la RPC
2315 (as when I was young!) and fix a bunch of bugs found on the way.
2317 GRAS performance improvements: [MQ]
2319 * Reduce the amount of cbps creation/destruction by making it static to
2320 datadesc_send/recv() and using a (newly created) cbps_reset (based on
2323 * Change libdata to a set so that we can search for stuff by ID (and thus
2324 reduce the insane amount of dict lookups)
2327 * Actually implement gras_datadesc_copy() so that we don't have to mimick
2328 RL communication on top of SG since it's so uneffective.
2329 It may also be used for inter-thread communication in RL, one day.
2330 * Use gras_datadesc_copy() to exchange messages on top of SG
2332 - improve message exchange performance on top of SG
2333 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
2334 * Don't exchange on the network the size of the used part of buffer,
2335 instead, specify the possible buffer size to read().
2337 - reduces the amount of read/write calls (one pair per exchange)
2338 - reduces the amount of exchanged data (the size)
2339 - allows to retrieve all arrived data on receiver side, if we don't need
2340 it right now (subsequent read will peek the buffer)
2341 - allows the receiver to proceed with the begining of the stream before
2342 everything is arrived
2343 - make it possible to build an iov transport (using readv/writev)
2345 - take care of the data with non-stable storage (like stacked data),
2347 * If possible, TCP send uses vector I/O (when writev() is here)
2348 - Don't use it for receive since we send data sizes and data on the
2349 same stream, so we wouldn't be able to chain large amount of chunks
2350 before having to flush the stuff to read the size.
2351 * Rework the transport plugin mechanism to simplify it and reduce the
2352 amount of pointer dereferencement when searching for the right function
2355 * I guess that now, we do almost as few system calls as possible while
2356 doing as few data copy as possible.
2358 To improve it further, we could try to send all the sizes first and then
2359 all the data (to use iov on receiving size), but it's only a partial
2360 solution: when you have 2 dimensional data, the sizes of the second
2361 dimension is data of the first dimension, so you need 3 streams.
2363 I'm not sure the potential performance gains justify the coding burden.
2365 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
2367 SimGrid (3.00) stable; urgency=high
2370 * New! Give the possibility to hijack the surf parser and thus bypass
2371 MSG_create_environment and MSG_launch_application. Have a look at
2372 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
2374 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
2376 SimGrid (2.96) unstable; urgency=low
2381 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
2382 This deprecates the xbt_error_t mechanisms.
2383 It modifies (simplifies) all XBT and GRAS API.
2384 MSG API keeps unchanged (exceptions raised by XBT are catched from
2385 within MSG and masked with existing error handling facilities)
2388 * New! Add a FATPIPE model. [AL]
2389 * New! Add a parallel task model. [AL]
2390 * New! Add automatically a loopback interface (in the default
2391 network model) if none was precised.
2394 * Bugfix: MSG_process_resume now works with the current running process.
2396 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
2397 * Modification of MSG_task_get_compute_duration. Once a task has been
2398 processed, the value returned by this function is now equal to 0. [AL]
2399 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
2400 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
2401 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
2402 of a m_task. For now, MSG_task_cancel only works with computation
2404 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
2405 of the processor (in Mflop/s) regardless of the current load on the
2407 * API Change: use proper naming convention for MSG_getClock and
2408 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
2410 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
2411 This function changes the priority of a computation task. This priority
2412 doesn't affect the transfer rate. A priority of 2 will make a task
2413 receive two times more cpu power than the other ones. This function
2414 has been added to suit the needs of Nguyen The Loc and hasn't been that
2415 much tested yet. So if it fails, please report it and send me your code.
2417 * API Change: removed all functions and types that were marked "deprecated"
2418 since many months. Renamed MSG_global_init_args to MSG_global_init.
2420 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
2422 SimGrid (2.95) unstable; urgency=low
2425 * Steal some nice code to GNU pth to fix context detection and usage [AL]
2426 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
2427 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
2430 * Bugfix: Allow absolute paths for platform description files [MQ]
2431 * Bugfix: do free the variables after use. Leads to drastic performance
2433 * Implement max_duration (ie, timeouts) on resources [AL]
2436 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
2438 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
2439 the needed support (timeouts) [AL]
2442 * Implement measurement sockets. You can now get the bandwidth between two
2443 hosts thanks to AMOK (see below). [MQ]
2444 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
2445 dynar over the network (yeah) [MQ]
2446 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
2447 * simple/static token-ring example. [Alexandre Colucci and MQ]
2448 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
2449 in place before [MQ]
2452 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
2453 type parsing. "short" and "long" modifiers were also ignored; other
2454 modifier (such as reference level) are still ignored. [MQ]
2455 * Embeed the buffer size within the buffer itself on SG. [MQ]
2456 That way, send() are atomic and cannot get intermixed anymore (at least
2457 the ones which are less than 100k; bigger messages still have the issue)
2458 * Array size pushed by the field, not by the field type (or each
2459 and every long int will push stuff to the cbps) [MQ]
2460 * use select() to sleep since it allows to portably sleep less than one
2463 GRAS (minor cleanups)
2464 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
2467 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
2468 * type category 'ignored' killed as it was never used and were difficult
2470 * whether a type can cycle or not is now a flag, leaving room for more
2471 flags (as "ignored", if we feel the need one day ;)
2472 * Rename raw sockets to measurement sockets since "raw" has another
2473 meaning in networking community.
2476 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
2477 and offers features not belonging to GRAS but that most applications
2478 need. One day, it may be a set of plugins loadable at runtime.
2479 * New module: bandwidth
2480 bandwidth measurement between arbitrary nodes running this module. [MQ]
2482 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
2484 SimGrid (2.94) unstable; urgency=low
2486 The first beta release of SimGrid 3 !
2490 * Update the main page and the FAQ. Adding references to gforge.
2493 * Add a gras_os_getpid function.
2496 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
2497 * Extend the logs so that they also print PID, hostname, date, ... if
2499 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
2500 and kill the old version which were in testsuite/
2501 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
2505 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
2506 for users. Instead, each programming environment (GRAS, MSG,...) use it
2507 when needed to provide such a feature to users.
2508 Don't shortcut the mechanism or you will also shortcut the virtualization
2509 you need on the simulator.
2513 * Cleanups in configury with regard to compile optimization/warning flags.
2514 Also add -fno-loop-optimize to any powerpc since it's the optimization
2515 killing gcc (< 3.4.0).
2516 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
2517 needed by MSG examples complications
2518 * Borrow configury beautifications from PHP
2521 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
2522 warning (thanks loris for stumbling into this one).
2523 * Bugfix: stop loading private headers (gras_config.h) from the public
2527 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
2528 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
2529 RL would imply a DNS resolver, which is *hard* to do in a portable way
2530 (and therefore delayed).
2531 * Implement a real timer mechanism and use it in timing macros. This allows
2532 to avoid rounding errors and get a 0.000005 sec precision in timing
2533 macros. While I was at it, various cleanups:
2534 - allow to declare more than one timed section per file (fix a stupid bug)
2535 - move some private declaration to the right place
2536 - merge conditional execution and timing macros into emulation module
2537 - document the module
2538 - make sure the module cleanups its mess on gras_exit
2539 * Documentation improvements:
2540 - (new) how to compile applications using GRAS
2541 - (new) emulation support (timing macros)
2543 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
2545 SimGrid (2.93) unstable; urgency=low
2547 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
2550 - Use Paje properly where used. Still to be sanitized properly.
2551 - Portability fix: Add an implementation of the contexts using pthread
2555 - Add xbt_procname(): returns the name of the current process.
2556 Use it to show the current process's name in all logging.
2558 - fix detection of older flex version and the reaction, since we do
2559 depend on modern ones (we use lex_destroy)
2560 - Better separation of SG and RL in the libs: remove all simulation code
2561 from libgras. As a result, this lib is now only 200k when stripped.
2562 Some of the xbt modules may also be duplicated (two sets and such) and
2563 should be cleaned/killed before SG3.
2564 - Insist on using xlC on AIX because of weird problems involving gcc there.
2565 - Cleanup the make remote stuff. This is now done by scripts
2566 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
2567 mainly for our private use, but we're working on changing them to user
2570 - Bugfix: flush the socket on close only if there is some *output*.
2571 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
2573 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
2576 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
2578 SimGrid (2.92) unstable; urgency=low
2580 Alpha 3 on the path to SimGrid 3
2584 - New! First try of benchmarking macros.
2585 - New! First try so that gras_stub_generator generate deployment and
2586 remote compilation helpers.
2588 - Bugfix: Initialization fix in msg_test.
2592 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
2594 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
2596 - API Change: gras_os_sleep to take the amount of seconds as a double.
2597 Accepting an int was error prone since it was the only location where
2598 seconds were coded as such. It leaded to damn rounding errors.
2599 - Bugfix: Hard to belive that timers ever worked before this.
2601 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
2603 SimGrid (2.91) unstable; urgency=low
2605 Alpha 2 on the path to SimGrid 3
2609 - Bug fix in the lmm_solver.
2611 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
2612 through the function MSG_paje_output.
2613 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
2614 - It is possible to bound the rate of a communication in MSG with
2615 MSG_task_put_bounded() (was already in the previous version but I had forgotten
2616 to write it in the changelog).
2617 - Bug fix to let GRAS run on top of MSG until we move it directly on top
2622 - Various cleanups to the autotools stuff
2623 - Begin to move Gras examples to examples/gras/
2624 - Let make distcheck work again (yeah!)
2626 - documentation overhauled using doxygen.
2627 gtk-doc-tools is dead in SimGrid now.
2628 - Automatically extract all existing logging categories, and add the list
2629 to the documentation (long standing one, to say the less)
2631 - Cleanup the known architecture table. Reorder the entries to group what
2632 should be, and use a more consistent naming scheme.
2633 (some of the test dataset are still to be regenerated)
2634 - New! Allow library to register globals on each process just as userdata
2636 This is implemented using a xbt_dict and not a xbt_set, so we loose the
2637 lookup time (for now).
2638 Use it in msg and trp.
2639 This cleans a lot the internals and helps enforcing privacy of the
2640 headers between the gras components.
2641 - New! Add a timer mechanism, not unlike cron(8) and at(1).
2642 - Bugfix: gras_os_time was delirious in RL.
2643 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
2645 - Reenable GRAS now that it works.
2647 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
2649 SimGrid (2.90) unstable; urgency=low
2651 Alpha 1 on the path to SimGrid 3
2653 * It is a long time since the last release of SimGrid. I'm sorry about
2654 that but as I had told you, I was rewriting a lot of things. I apologize
2655 to those who had been reporting bugs to me and that I had not answered.
2656 If your bug is still in the new version, please tell me. Here is a
2657 summary of the main changes.
2659 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
2660 lead by Martin Quinson. As a consequence SimGrid gains a lot in
2661 portability, speed, and a lot more but you'll figure it out later.
2662 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
2663 I wanted to release the new MSG as soon as possible and I have
2664 broken GRAS, which is the reason why, for now, only MSG is fully
2665 functional. A laconic description of these projects is available
2666 in the documentation.
2668 * REVOLUTION 2: I have removed SG and I am now using a new simulation
2669 kernel optimized for our needs (called SURF but only the developers
2670 should use it). Hence, MSG is now roughly 30 times faster and I think
2671 that by rewriting a little bit MSG, I could event speed it up a little
2672 bit more. Beside the gain in speed, it is also much easier to encode a
2673 new platform model with SURF than it was with SG. More to come...
2675 * REVOLUTION 3: I have tried to change a little as possible the API of
2676 MSG but a few things really had to disappear. The main differences
2677 with the previous version are :
2678 1) no more m_links_t and the corresponding functions. Platforms are
2679 directly read from a XML description and cannot be hard-coded
2680 anymore. The same format is used for application deployment
2681 description. The new format is described in the documentation.
2682 Have a look in tools/platform_generation. There is a tiny script
2683 that converts from the old platform format to the new one. Concerning
2684 the application deployment format, parsing the old one is tricky.
2685 I think most of you should however be able to convert your files. If
2686 it is really an issue, I can write a C code that does the conversion.
2688 2) the toolbox tbx does not exist anymore. We now have a library
2689 with much more data-structures but without the hash-tables (we have
2690 dictionaries that are much faster).
2692 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
2694 *****************************************************************************
2695 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
2696 * don't feel like converting the oldies. (Mt) *
2697 *****************************************************************************
2700 Version 2.90: "the long awaited one"
2701 - Finished rewriting and debugging MSG. Rewrote the documentation.
2702 - disable GRAS for now since it needs to be ported to the newest SG
2705 - Finish the port to windows (using mingw32 for cross-compile)
2708 - Main loop and datastructures of SURF. A cpu resource object is
2709 functional. Surf can thus be used to create cpu's with variable
2710 performance on which you can execute some actions.
2712 2004-11-15 Martin Quinson
2713 - Port to ARM. Simply added the alignment and size descriptions. Should
2714 work, but the ARM machines are so slow that I didn't had the opportunity
2715 to 'make check' over there yet.
2717 2004-11-15 Arnaud Legrand
2718 - Trace manager now written. It uses a heap structure and is therefore
2719 expected to be efficient. It may however be speeded up (particularly
2720 when many events occur at the same date) by using red and black
2721 trees. One day maybe...
2722 - Max-min linear system solver written. It uses a sparse matrix
2723 structure taking advantage of its expected use. Most operations are
2724 O(1) and free/calloc are called as few as possible. The computation of
2725 the minimum could however be improved by using a red and black tree
2728 2004-11-03 Arnaud Legrand
2729 - Rename every gras_* function that was in xbt/ to its xbt_
2731 - Add a heap and a doubly-linked list to xbt
2732 - Added a dichotomy to the dictionaries. make check works as well before
2733 so I assume that the patch is correct. I do not know however if things
2734 run effectively faster than before now. :)
2736 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
2737 SimGrid, and the version number is bumped to 2.x
2739 2004-10-29 Martin Quinson
2740 - Introduction of the remote errors.
2741 They are the result of a RMI/RPC on the remote machine.
2742 ErrCodes being scalar values, you can't get the host on which those
2743 errors did happen. Extending the error mechanism as in Gnome is possible.
2744 No idea yet whether it is a good idea.
2746 2004-10-28 Martin Quinson
2747 - Interface revolution: the Starred Structure Eradication.
2748 I used to do typedef struct {} toto_t; and then handle *toto_t.
2749 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
2750 - ???_t is a valid type (builded with typedef)
2751 - s_toto_t is a structure (access to fields with .)
2752 - s_toto is a structure needing 'struct' keyword to be used
2753 - e_toto_t is an enum
2754 - toto_t is an 'object' (struct*)
2756 typedef struct s_toto {} s_toto_t, *toto_t;
2757 typedef enum {} e_toto_t;
2758 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
2759 s_toto_t) is private.
2761 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
2762 so that it can set the variable to NULL. It was so for dicts and sets,
2763 it changed for dynars.
2765 - Fix a bunch of memleaks in dict_remove
2766 - Fix a bug in sg/server_socket opening: it failed all the time.
2768 2004-10-07 Martin Quinson
2769 - Speed up dynar lookup operation a bit.
2771 gras_dynar_get is dead.
2773 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
2774 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
2775 (which gives you the address of the stored data).
2777 gras_dynar_get_as is an helpful macro which allows you to retrieve a
2778 copy of the data using an affectation to do the job and not a memcpy.
2780 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
2781 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
2783 It does not really speedup the dynar test because they are
2784 setting elements all the time (and look them seldom). But the dict does
2785 far more lookup than setting.
2787 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
2789 2004-10-05 Martin Quinson
2790 - Allow to (en/dis)able the cycle detection at run time.
2792 Whether we should check for cycle or not is now a property of each
2793 datatype. When you think there may be some cycle, use datadesc_cycle_set.
2794 datadesc_cycle_unset allow to remove this property when previously set.
2796 Note that the cycle detection is off by default since it impacts the
2797 performance. Watch the data you feed GRAS with ;)
2799 This property is hereditary. Any element embedded in a structure having it
2800 set have it set for the time of this data exchange.
2802 You should set it both on sender and receiver side. If you don't set it on
2803 sender side, it will enter an endless loop. If you forget on receiver
2804 side, the cycles won't be recreated after communication.
2806 - Header reorganization.
2807 Kill gras_private.h, each submodule must load the headers it needs.
2809 2004-10-04 Martin Quinson
2810 - Interface revolution: do not try to survive to malloc failure.
2812 Now, gras_malloc and friends call gras_abort() on failure.
2813 As a conclusion, malloc_error is not a valid error anymore, and all
2814 functions for which it was the only gras_error_t return value are
2815 changed. They now return void, or there result directly.
2816 This simplify the API a lot.
2818 2004-09-29 Martin Quinson
2819 - Re-enable raw sockets.
2820 Created by gras_socket_{client,server}_ext;
2821 Used with gras_raw_{send,recv}
2824 It should allow to kill the last bits of gras first version soon.
2826 This is not completely satisfactory yet (duplicate code with
2827 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
2830 - Simplify transport plugin (internal) interface by not passing any
2831 argument to _server and _client, but embedding them in the socket
2834 2004-09-28 Martin Quinson
2835 - Finish the port to AIX.
2836 autoconf was my problem (segfault within the malloc replacement
2837 function. No idea why)
2839 2004-09-16 Martin Quinson
2840 - Fix some size_t madness on 64bit architectures.
2842 2004-09-08 Martin Quinson
2843 - Reduce the number of system headers loaded, overload some more system
2844 calls (such as malloc to cast the result of the system one, and work
2846 - Fix and reintroduce the config support
2848 2004-09-07 Martin Quinson
2849 - Source code reorganization to allow Arnaud to surf all over there.
2850 - Allow to document the logging categories.
2851 - Remove all uppercase from logging categories and useless cleanup in names.
2853 2004-08-18 Martin Quinson
2854 Version 0.6.2 (protocol not changed; API changed)
2855 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
2856 gras_error_t), and NULL when not found. Functions expecting a msgtype
2857 as argument (msg_wait; msg_send) deal with NULL argument by providing a
2858 hopefully usefull message.
2859 - Portability to prehistoric sparcs again
2861 2004-08-17 Martin Quinson
2862 Version 0.6.1 (protocol not changed; ABI not changed)
2863 - prealloc some buffers to speed things up
2865 2004-08-11 Martin Quinson
2866 Version 0.6 (protocol not changed; ABI expended)
2867 - The parsing macro can deal with the references, provided that you add
2868 the relevant annotations (using GRAS_ANNOTE(size,field_name))
2870 2004-08-09 Martin Quinson
2871 Version 0.5 (protocol not changed; ABI changed)
2872 - Allow to off turn the cycle detection code in data exchange at
2873 compilation time. It should be at run time, but I'm short of time (and
2874 the config stuff is still broken). That way, we keep dict out of the
2875 critical path, which is good because the performance is poor:
2876 - search not dichotomial yet
2877 - dynar give no way to access their content and memcpy everytime
2878 - In composed data description (struct, ref and so on), stop foolness of
2879 keeping the subtype's ID, but store the type itself. This keeps sets out
2880 of the critical path, which is good since they rely on dynar and
2881 dictionnaries. The only loose of that is that we cannot detect the
2882 redeclaration of a structure/union with another content (but I'm not sure
2883 the code detected well this error before anyway). We still can detect
2884 the redefinition discrepancy for the other types.
2885 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
2886 it breaks the code because of type-punning used all over the place).
2887 This breaks on all non-gcc architectures (for now).
2889 All those changes (plus the buffer of last time) allow me to gain 2 order
2890 of magnitude on cruel tests consisting of 800000 array of integers on two
2891 level of a hierarchical structure (200 secondes -> 4 secondes)
2894 - the selector of reference must now return the type it points to, not
2895 the ID of this type.
2897 2004-08-06 Martin Quinson
2898 Version 0.4 (protocol changed; ABI not changed)
2899 - Allow to pass --gras-log argument to processes in simulation mode. Really.
2900 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
2901 - Implement a buffer transport, and use it by default (it relies on tcp in
2902 real life and on sg in simulation).
2903 That's a bit hackish since I had a new field to the structure to store
2904 its data without interfering with the subtype ones. Inheritance
2905 is tricky in C. And that's a kind of reverse inheritance with one class
2906 derivating two classes. Or maybe a game with java interfaces. Anyway,
2907 that's damn hard in C (at least).
2908 Moreover, I got tired while trying to ensure plugin separation and
2909 genericity in SG mode. MSG wants me to do weird things, so let's go for
2910 cruel hacks (temporarily of course ;).
2911 See comment in transport_private.h:71
2912 - do not include all the _interface headers in private but in the files
2913 which really need them (to cut the compilation time when they are
2916 2004-07-26 Martin Quinson
2917 Version 0.3 (protocol not changed; ABI changed)
2918 - Major overhault of the datadesc interface to simplify it:
2919 - shorted the function names:
2920 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
2921 - add a trivial way to push/pop integers into the cbps without malloc.
2922 This allows to make really generic sub_type description, which simply
2923 pop their size of the stack.
2924 - add a function gras_datadesc_ref_pop_arr() which does what users want
2925 most of the time: Declare a dynamic array (which pops its size of the
2926 stack) and declare a reference to it. Poor name, but anyway.
2927 - kill the post-send callback, add a post-receive one
2929 2004-07-23 Martin Quinson
2930 Version 0.2 (protocol changed; ABI changed)
2931 - add some testing for cpbs in the test cases, and fix some more bugs.
2932 This invalidate again the little64 data file, since I cannot regenerate
2934 - remove an awfull optimization in the logging stuff, allowing me to:
2935 - understand it again
2936 - learn gcc how to check that the argument match the provided format
2937 - fix all errors revealed by gcc after that
2938 - internal keys of dict are not \0 terminated. Deal with it properly in
2939 loggings instead of segfaulting when the user want to see the logs :-/
2941 2004-07-22 Martin Quinson
2942 - Fix some stupid bug preventing cbps (callback postit) from working
2944 2004-07-21 Martin Quinson
2945 - Some documentation cleanups
2946 - remove the useless last argument of msgtype_declare
2947 - rename the Virtu functions to fit into the 'os' namespace
2948 - move headers src/include -> src/include/gras/ and stop fooling with
2949 gras -> . symbolic link
2950 - make distcheck is now successful
2952 2004-07-19 Martin Quinson
2954 - Build shared library also
2955 - Install html doc to the right location
2956 - stop removing maintainer files in make clean
2957 - build tests only on make check
2959 2004-07-13 Martin Quinson
2961 - No major issue in previous version => change versioning schema
2962 - Re-enable little64 convertion test now that Abdou kindly regenerated the
2963 corresponding dataset.
2965 2004-07-11 Martin Quinson
2967 - Get it working with any kind of structure (we can compute the padding
2968 bytes remotely for all the architectures I have access to)
2969 - Implement the structure parsing macro (still not quite robust/complete)
2970 - Improvement to the remote testing toysuite
2972 2004-07-10 Martin Quinson
2973 [autoconf mechanism]
2974 - get ride of a bunch of deprecated macros
2975 - actually run the test for two-compliment, not only compile it :-/
2976 - test whether the structures get packed (and bail out if yes. Damn.
2977 Alignment is a serious matter)
2978 - test whether the structures get compacted (but respecting the alignment
2979 constraints of each types)
2980 - test whether the array fields of structures can straddle alignment boundaries
2982 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
2983 (took me 2 hours to find that bug, looking at the wrong place)
2984 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
2985 before sending/receiving and are used to compute the offsets of fields
2986 - Given that padding size depend even on compiler options, keep track of
2987 alignment and aligned_size only for the current architecture. Not a big
2988 deal since we send structure fields one after the other (seems
2990 - Add the datastructure used for IEEE paper by the PBIO guys to the test
2991 program, let it work on linux/gcc/little32. portability todo.
2993 2004-07-08 Martin Quinson
2994 - import and improve remote compilation support from FAST
2995 - make sure make check works on half a dozen of machines out there
2997 2004-07-07 Martin Quinson
2998 Let's say it's version 0.0.3 ;)
2999 - Implement conversions (yuhu!)
3000 - Let it work on solaris (beside conversion, of course)
3001 - Stupid me, using rand() to generate the conversion datatests in not wise.
3003 2004-07-06 Martin Quinson
3004 - Let make dist work, since I'm gonna need it to compile on remote hosts
3005 - Let Tests/datadesc_usage write the architecture on which the file was
3006 generated as first byte.
3007 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
3008 architecture descriptions.
3009 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
3010 on those architectures.
3011 - Optimization: send/recv array of scalar in one shoot
3013 2004-07-05 Martin Quinson
3014 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
3016 - Plug a whole bunch of memleaks
3017 - each process now have to call gras_{init,exit}. One day, their log
3018 settings will be separated
3019 - Continue the code factorisation between SG, RL and common in Transport.
3021 2004-07-04 Martin Quinson
3023 - Redistribution between SG and RL.
3024 We wanna have to accept in SG, so move accepted related parts of RL in
3025 the common part. (more precisely, the dynar of all known sockets is no
3026 more a static in transport.c, but part of the process_data)
3028 [gras_stub_generator]
3029 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
3031 2004-07-03 Martin Quinson
3032 - Create a new log channel tbx containing dict, set, log, dynar (to shut
3033 them all up in one shot)
3035 - Fix the ugly case of reference to dynamic array.
3036 - New (semi-public) function gras_datadesc_size to allow the messaging
3037 layer to malloc the needed space for the buffer.
3039 - gras_socket_close now expect the socket to close (and not its address to
3040 put NULL in it after it). This is because the socket passed to handlers
3041 is one of their argument (=> not writable).
3043 - propagate the interface cleanup from last week in datadesc, ie remove a
3044 superfluous level of indirection. User pass adress of variable
3045 containing data (both when sending and receiving), and not of a variable
3046 being a pointer to the data. Let's say that I like it better ;)
3047 The price for that is constructs like "int msg=*(int*)payload" in
3048 handlers, but it's a fine price, IMHO.
3050 - Let it work in RL (yuhu)
3052 2004-06-21 Martin Quinson
3054 - porting SG plugin and SG select to new standards (works almost).
3055 - plug memleaks and fix bugs around.
3058 - cleanup the prototype of data recv and force users to specify when they
3059 want to handle references to objects. Test case working even for cycles.
3060 - plug memleaks. Valgrind is perfectly ok with this.
3062 2004-06-12 Martin Quinson
3064 - cleanup the separation between plugin and main code in plugin creation
3066 2004-06-11 Martin Quinson
3068 - Reput hook for raw sockets, needed for BW experiments
3069 - kill a few lines of dead code
3070 [Data description] Interface cleanup
3071 - gras_datadesc_by_name returns the searched type or NULL.
3072 That way, no variable is needed to use a type desc once, which makes
3074 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
3075 two parameters were strings (field name, type name), leading to
3077 [Dicos] Interface cleanup
3078 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
3079 This is consistant with the dynar API.
3081 2004-04-21 Martin Quinson
3083 - Porting to new standards.
3085 - interface cleanup.
3086 There is no bag anymore, no need to take extra provision to mask the
3087 pointers behind "ID".
3088 Better splitup of functions between files create/exchange/convert.
3089 This is still a bit artificial since convert and receive are so
3090 interleaved, but anyway.
3092 - add a queued message list to procdata (the ones not matching criteria
3094 - factorize some more code between SG and RL wrt procdata
3096 - use gras_exit in example to track memleaks
3097 - get rid of gs_example now that GS is properly integrated into gras
3098 - update run_test to integrate the latest tests (datadesc)
3100 - rename WARNINGn macros to WARNn since it prooved error-prone
3102 2004-04-19 Martin Quinson
3104 - register init/exit functions within gras module mechanism
3105 - send/receive function.
3106 Convertion is not implemented, but short-cutted if not needed.
3107 struct/array elements are sent one by one (instead of block-wise), but
3108 nobody really cares (yet). Get a prototype before optimizing.
3109 - tests (using a file socket) for DD send/receive on:
3110 - base types: int, float
3111 - array: fixed size, string (ie ref to dynamic string)
3112 - structure: homogeneous, heterogeneous
3113 - chained list, graph with cycle
3114 Believe it or not, valgrind is not too unhappy with the results. The
3115 cycle happily segfaults, but the others are ok. And I'm sick of pointers
3119 - Bugfix when using a filename explicitely (instead of '-')
3121 2004-04-09 Martin Quinson
3123 - factorize more code between RL and SG in socket creation
3124 - Complete the implementation and tests of:
3126 o file (only in RL, and mainly for debugging)
3128 I lost 3 days to design a portable address resolver, and then decided
3129 that the prototype mainly have to run on my box.
3130 Addressing portability too early may be like optimizing too early :-/
3132 - use gras_init in the Tests instead of the crappy parse_log_opt
3133 (the latter function is removed)
3134 [Conditional execution]
3135 - New functions: gras_if_RL/gras_if_SG (basic support for this)
3136 [Code reorganisation]
3137 - Get rid of libgrasutils.a since it makes more trouble than it solves.
3138 Build examples against the RL library, since there is no way to disable
3139 its creation for now.
3141 For information, the beginning of coding on GRAS was back in june
3142 2003. I guess that every line has been rewritten at least twice since