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 New functions and features
29 * MSG_parallel_task_execute_with_timeout, to timeout computations.
31 Dropped / renamed functions and features
32 * msg_mailbox_t and associated functions. Use s4u::Mailbox instead.
33 - MSG_mailbox_is_empty() -> Mailbox::empty()
34 - MSG_mailbox_front() -> Mailbox::front()
35 - MSG_mailbox_get_by_alias() -> simgrid::s4u::Mailbox::byName(name)
36 - MSG_mailbox_get_task_ext() -> MSG_task_receive_ext()
37 - MSG_mailbox_get_task_ext_bounded -> MSG_task_receive_ext_bounded
38 - MSG_host_(get/set)_params -> MSG_vm_(get/set)_params
39 * Don't pass the free_f parameter to property related functions:
40 - MSG_host_set_property_value()
41 - MSG_as_router_set_property_value()
42 - MSG_storage_set_property_value()
43 * VM properties. Since msg_vm_t are msg_host_t, just use
44 MSG_host_get_property_value() and friends
45 * MSG_as_router_get_property_value() was redundent with
46 MSG_environment_as_get_property_value().
47 - Removed MSG_as_router_*propert*() functions
48 - Added MSG_environment_as_set_property_value() for consistency
49 * xbt heterogeneous dictionnaries (created with xbt_dict_new()).
50 Well, they are still there for now, but deprecated with a warning.
51 Please switch to xbt_dict_new_homogeneous() before this is removed
53 * Task affinity. Its intended behavior (that was very badly tested
54 and probably not really working) was deceiving what most users
55 would have hoped here.
56 * xbt_os_sem_get_value: unused internally, deprecated on OS X El Capitan
57 * Option network/coordinates is now useless and should be dropped.
60 * Add Exa- and Peta- units such as EiB, EB, Eib, Eb for size, and
61 EiBps, EBps, Eibps, Ebps for bandwidth.
62 They may become useful to some lucky ones.
65 * New functions: msg.Comm.waitAll() and msg.Comm.waitAny()
66 * ex/app_tokenring: new example, very similar to the MSG Token Ring
67 * ex/async_waitAll: new example, on asynchronous communications
69 -- $date Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
71 SimGrid (3.13) stable; urgency=low
73 The Half Release, a.k.a. the Zealous Easter Trim.
75 - We removed half of the lines, that were mostly experimental cruft.
76 v3.12 lasted 286000 lines of code, v3.13 is only 142000 lines
77 (not counting blanks and comments -- according to openhub.net)
78 - The internals are now compiled in C++ (and will soon be clean C++)
79 - We removed 75 klines of XML, 12 klines of Java, 5 klines of cmake,
80 59 klines of C, etc. We added only 29 klines of C++ in replacement.
82 * Backwards Compatibility breaks
83 - Removed Lua simulation bindings (switch to C or Java for that).
84 Lua can still be used to describe platforms
85 - Removed Java kernel plug-ins.
86 Will be reintroduced after the ongoing major internals reorg.
88 - the following functions were removed.
89 They were too specific and should be reimplemented in a generic
90 way, with filter function.
91 - MSG_task_listen_from_host
92 - MSG_mailbox_get_count_host_waiting_tasks
93 - MSG_mailbox_put_with_timeout was removed.
94 Please use MSG_task_send_with_timeout instead.
96 - the SD_application_reinit function was removed. It has been a noop for a while.
97 - The ACCESS_MODE of SD_workstation has been removed. This feature was not really usable and should soon be
98 replaced by a more flexible mechanism.
99 - The following functions thus do not exist anymore
100 - SD_workstation_get_access_mode
101 - SD_workstation_set_access_mode
102 - SD_workstation_get_current_task
103 - Basic estimation functions have been removed but can easily be replaced
104 - SD_route_get_communication_time => SG_route_get_latency() + amount / SD_route_get_bandwidth()
105 - SD_workstation_get_computation_time => amount / sg_host_speed()
107 - VM.setBound(int load) is now VM.setBound(double bound) to meet the MSG semantics.
108 Use VM.getSpeed()*load/100 for the legacy behavior.
110 - option enable_tracing was removed. It was not doing anything for a while.
111 - In the ModelChecker:
112 - the model-checker now ptraces the model-checked process which means
113 you cannot use a debugger on the latter anymore (we might make this
114 optional in the feature);
115 - removed soft-dirty page tracking;
116 - remove model-checked side snapshot management,
117 MC_snapshot() and MC_compare_snapshot();
118 - keep the MC_cut() function as a stub (it was not really working
119 in the previous release).
122 * All options are consistently in kebab-case. Old names are kept as alias.
125 * Switch to platform v4 format.
126 - Rename from 'power' to 'speed' the attributes describing the amount of
127 flops that a <host>, <peer>, <cluster> or <cabinet> can deliver per second.
128 - In <trace_connect>, attribute kind="POWER" is now kind="SPEED".
129 - In <host> and <link>, attributes availability and state are gone.
130 It was redundent with state and availability traces, and with peak values.
131 - In <cluster>, attributes availability_file and state_file are gone.
132 It was too complex and unused.
133 - Kill <gpu>. Was not doing anything.
134 - The DOCTYPE points to the right URL:
135 http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd
136 (the file at this address now documents the changelog since its v1)
137 - A warning is emitted for unit-less values (they are still accepted).
138 - speed. Default: 'f' or 'flops'. Also defined:
139 'Yf', 'Zf', 'Ef', 'Pf', 'Tf', 'Gf', 'Mf', 'kf'
140 'yottaflops', 'zettaflops', 'exaflops', 'petaflops', 'teraflops', 'gigaflops', 'megaflops', 'kiloflops'
141 - bandwidth. Default: 'Bps' bytes per second (or 'bps' for bits but 1 Bps = 8 bps)
142 Also defined in bytes: 'TiBps', 'GiBps', 'MiBps', 'KiBps', 'TBps', 'GBps', 'MBps', 'kBps', 'Bps'
143 And the same in bits: 'Tibps', 'Gibps', 'Mibps', 'Kibps', 'Tbps', 'Gbps', 'Mbps', 'kbps', 'bps'
144 - latency. Default: 's' second. Also defined:
145 'w' week, 'd' day, 'h' hour, 'm' minute, 'ms' millisecond, 'us' microsecond, 'ns' nanosecond, 'ps' picosecond
147 * bin/simgrid_update_xml can upgrade your files automatically (won't convert unit-less values)
148 tools/sg_xml_unit_converter.py may help (but it's just a warning and will probably ever be).
151 * s4u::Host is now the preferred public interface to the Host features.
152 sg_host_* functions are C bindings to the exact same behavior
153 MSG_host_* and SD_workstation_* are #define to the sg_host_* ones
156 * The examples were completely reorganized (in C and Java), for your browsing pleasure.
157 * Kill all deprecated functions (the ones you had when declaring MSG_DEPRECATED).
158 They were deprecated since a few years, and probably did not even compile anymore.
161 * The API has been profoundly modified to directly use the core objects instead of redefining its own.
162 SD_Workstation_t and SD_link_t are now sg_host_t and sg_link_t respectively.
163 Some functions have also been renamed for consistency. Backward compatibility is maintained, but users are
164 encouraged to update their codes. A list of the modified functions can be found at the end of
165 include/simgrid/simdag.h
168 * simgrid::simix::kernelImmediate() is the closure callback. It ensures that
169 the lambda or closure passed as a parameter will run in kernel mode.
170 All the callback functions should be rewritten to that interface at some point.
173 * Reorganizing and cleaning the internals all around the place.
176 * Remove old default barrier/bcast buggy algorithms (see #18407)
177 * Various bug fixes to handle more codes
178 * Remove the need for the --foreground option of smpirun (it is still
179 accepted for backward compatibility).
182 * Kill the setset data container: MC don't use it anymore.
183 * Kill the queue data container: it made more sense with GRAS.
184 * Kill the xbt_peer_t data type: it's useless without GRAS.
185 * Kill rm_cb feature of config sets: it was never useful.
186 * Kill graphxml parsing feature. It was not used.
187 * Kill the deprecated code protected by XBT_USE_DEPRECATED
189 - xbt_dynar_sort_strings(), when the content is char*
190 - xbt_str_parse_int / xbt_str_parse_double, wrapping strtol/strtod
191 They throw exceptions on invalid input;
192 * C++ support for declaring CLI flags (simgrid::config::Flag);
193 * class for abstracting different signal backends (simgrid::xbt::signal).
194 with no external dependencies (we need very simple signals).
197 * refactoring and cleanup of the code;
198 * ongoing process to cleanly separate the model-checking algorithms
199 from the code model-checking support.
201 -- Wed Apr 27 21:00:53 CEST 2016 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
203 SimGrid (3.12) stable; urgency=low
205 The Facelift Release.
208 * Require g++ v4.7 at least to not speak prehistorical C++.
209 * Require Boost 1.48 (for signal2 component).
210 * Java must be version 7 at least when activated.
211 * Builds on Windows again (including Java bindings).
212 * Tracing is now always enabled (no way to turn it out)
213 * Remove GTNetS. It was not working anyway.
214 * Various cleanups in the cmake scripts.
215 * Move headers around to sort them out on installed systems:
216 - instr/instr.h -> simgrid/instr.h
217 - instr/jedule/* -> simgrid/jedule
218 - simdag/datatypes.h was removed
219 - simdag/simdag.h -> simgrid/simdag.h
220 - msg/datatypes.h was removed
221 - msg/msg.h -> simgrid/msg.h
224 * Interface improvement:
225 - Rename MSG_host_is_avail(h) to MSG_host_is_on(h)
226 - Sanitize the interface in MSG_task_ module:
227 - Merge two functions that were close enough but misleading:
228 set_compute_duration(t) -> set_flops_amount(t)
229 get_remaining_computation(t) -> get_flops_amount(t)
230 - set_data_size(t) -> set_bytes_amount(t)
231 get_data_size(t) -> get_bytes_amount(t)
232 - Massive cleanups in the functions related to the energy
233 - MSG_host_get_pstate_number() -> MSG_host_get_nb_pstates()
234 - New: MSG_host_get_pstate()
236 - msg/energy/onoff: switching hosts on and off
238 * Interface improvement:
239 - Rename Host.isAvail() to Host.isOn()
240 - Rename Process.currentProcess() to Process.getCurrentProcess()
241 - Rename Task.setDataSize() to Task.setBytesAmount()
242 - Merge Task.getRemainingDuration() and Task.getComputeDuration() into Task.getFlopsAmount()
244 - #18874: Actually allows the GC to reclaim tasks
248 - SIMIX_process_throw: raises an exception in a remote process
249 * Refactoring: Separate sub-modules
250 - libsmx: the public interface, as libc in a real system
251 - popping: the strange dance that converts a user request into a kernel handling
252 - smx_context_*: the virtualization mechanisms that embed the user code
253 - smx_*: the handling of each simcalls
255 - simcall_host_set_power_peak_at -> simcall_host_set_pstate
256 * Rename smx_action_t into smx_synchro_t, making explicit that these
257 things are used to synchronize processes with their environment.
258 For example, a communication is a sort of synchronization involving
259 the communicating processes (that may block until the exchange) and
260 the platform. The same can be said from computations, etc.
262 - #18888: segfault when a process ends before its kill_time
266 - 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.
267 - MPI_Keyval*, MPI_Attr* functions, as well as MPI_Comm_attr*, MPI_Type_attr* variants (C only, no Fortran support yet)
268 - MPI_Type_set_name, MPI_Type_get_name
269 - MPI_*_c2f and MPI_*_f2c functions
270 - MPI_Info_* functions (beware, get_nthkey may not follow the insertion order)
271 - MPI_Pack, MPI_Unpack and MPI_Pack_size functions
272 - Activate a lot of new tests from the mpich 3 testsuite
274 - Constant times can be injected inside MPI_Wtime and MPI_Test through options smpi/wtime and smpi/test
275 - InfiniBand network model added : Based on the works of Jerome Vienne
276 http://mescal.imag.fr/membres/jean-marc.vincent/index.html/PhD/Vienne.pdf
277 - When smpi/display_timing is set, also display global simulation time and application times
278 - Have smpirun, smpicc and friends display the simgrid git hash version on --git-version
279 * Collective communications
280 - 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
281 - 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/).
282 - Support for Rabenseifner Reduce/Allreduce algorithms (https://fs.hlrs.de/projects/par/mpi//myreduce.html)
284 - Replay now uses algorithms from wanted collective selector
285 - Replay can be used with SMP-aware algorithms
286 - Memory occupation of replay should now be contained (temporary buffers allocated in collective algorithms should be shared between processes)
287 - 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.
289 - [#17799] : have mpi_group_range_incl and mpi_group_range_excl better test some corner cases
290 - Correctly use loopback on fat-tree clusters
291 - Asynchronous small messages shouldn't trigger deadlocks anymore
292 * Energy/DVFS cleanup and improvement
293 - smpi_set_host_power_peak_at() -> smpi_set_host_pstate()
294 - new: smpi_get_host_pstate()
297 - "Full" network optimization flag was broken since Surf++
298 - Better handling of precision flags in maxmin
299 - Fix bug causing sometimes "Impossible" errors
300 - Properly pass cluster properties to included hosts
301 * Improvement of the Energy plugin.
302 - Always update the consumption before returning that value
303 - New property: watt_off to denote the dissipation when the host is off
304 - New functions getWattMinAt and getWattMaxAt to retrieve the
305 dissipation of pstates that we are not currently at.
306 * Java: class NetworkLink renamed to Link
307 * New function: simcall_process_get_kill_time()
308 * Massive rename s/workstation/host/
309 - That's intrusive, but that's good for the project consistency. Sorry.
310 - Change config option "workstation/model" into "host/model"
313 - Add a xbt_heap_update function, to avoid costly xbt_heap_remove+xbt_heap_insert use
314 - Add a xbt wrapper for simcall_mutex_trylock (asked in [#17878])
315 - Add two new log appenders : rollfile and splitfile. Patch by Fabien Chaix.
316 - xbt_dirname and xbt_basename for non-POSIX systems
318 * The model checker now runs as a separate process.
319 * The model checker runs must now be launched with the new simgrid-mc program.
320 * Record/Replay: the MC can display a textual representation of a path in the
321 execution graph. It can then be replayed outside of the model checker.
323 -- Mon Oct 12 06:02:41 CEST 2015 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
325 SimGrid (3.11) stable; urgency=low
330 * Normalizing pointers addresses tool for better diff between logs
333 * Add cloud examples using new VMs
334 - examples/msg/cloud/two_tasks_vm.tesh
335 - examples/msg/cloud/simple_vm.tesh
336 - examples/java/cloud/cloud.tesh
337 - examples/java/cloud/migration/migration.tesh
338 * Add java surf examples:
339 - examples/java/surfPlugin/surf_plugin.tesh
340 - examples/java/reservationSurfPlugin/reservation_surf_plugin.tes
341 - examples/java/surfCpuModel/surf_cpu_model.tesh
342 * Add SMPI+MSG example:
343 - examples/smpi/smpi_msg_masterslave/
348 - msg task destroy cancel test
349 - msg_host on/off test
350 * Move all tests in testsuite to teshsuite (adding tesh files)
351 * Restructure teshsuites
352 - one folder for each kind of test
353 * Restructure AddTests.cmake
355 - structure the order of tests (with sections)
358 * Add virtual machine
359 - creation of a VM on a PM
360 - migration of a VM from a PM to another PM
362 - MSG_process_join(msg_process_t process, double timeout)
363 - msg_bar_t MSG_barrier_init(unsigned int count)
364 - int MSG_barrier_wait(msg_bar_t barrier)
365 - void MSG_barrier_destroy(msg_bar_t barrier)
366 - msg_as_t MSG_environment_as_get_by_name(const char * name)
367 * New option "msg/debug_multiple_use" to help debugging when a task is used
370 - Improvements and finalization of MSG_storage, MSG_file APIs and their
372 - Increase code coverage in test suites
376 * Protect context stacks against stack overflow. The number of protected memory
377 pages allocated on the top of each stack (1 by default) can be configured
378 with the new command line option --cfg=contexts/guard_size:<value>.
379 * Simcalls are now generated by a python script that
380 - generates files included by SimGrid
381 - checks that all the functions exist, and proposes prototypes
383 - remove sem_destroy, file_set_data, comm_destroy, vm_set_state,
384 host_set_data, host_get_data
386 - simcall_process_join(smx_process_t process, double timeout)
387 * Fix bug where sleeping processing could not be suspended.
390 * Translate surf models from C to C++
391 - Generic classes for all models: Model, Resource, Action
392 - A generic interface for each kind of model (CPU, Network, Storage
393 Workstation, WorkstationVM)
395 * Translate surf routings from C to C++
396 * Add callbacks using sigc++ or boost::signals2
397 - Add callback functions for resource creation/destruction
398 - Add callback functions for action state change
399 - Handle Energy as a plugin
400 * Replace swag by boost::intrusive
401 * Add new routing models for clusters. For documentation, see
402 http://simgrid.gforge.inria.fr/simgrid/latest/doc/platform.html#pf_cluster
403 - tori, with topology="TORUS" and topo_parameters="ndim1,ndim2,...,ndimn"
404 parameters for cluster tag
405 - Fat trees, with topology="FAT_TREE" and
406 topo_parameters="h;m1,...,mh;w1,...,wh;p1,...,ph" parameters for cluster tag
407 - see examples/platforms/torus_cluster.xml and
408 examples/platforms/fat_tree_cluster.xml
412 * Hostfiles support host:nb_processes construct to deploy several processes on
414 * Collective communication algorithms should not crash if used with
415 improper number of nodes and report the error.
416 * SMPI now partially supports MPI_Topologies : MPI_Cart_create, MPI_Cart_shift,
417 MPI_Cart_rank, MPI_Cart_get, MPI_Cart_coords, MPI_Cartdim_get,
418 MPI_Dims_create, MPI_Cart_sub are supported.
419 * New interface to use SMPI programmatically (still depends on MSG for
420 some parts, see examples/smpi/smpi_msg_masterslave) :
421 - SMPI_app_instance_register(const char *name, xbt_main_func_t code,
425 * Global variables privatization in MPI executables is now performed at runtime
426 with the option smpi/privatize_global_variables (default:no).
427 Limitations : Linux/BSD only, with mmap enabled. Global variables inside
428 dynamic libraries loaded by the application are not privatized (static
429 linking with these libraries is advised in this case)
432 * Options defined in XML work correctly now.
435 * New cmake option, enable_lib_in_jar, to control whether native libraries are
436 copied into simgrid.jar or not (ON by default). Use this option if you want
437 to reduce the size of the installed simgrid.jar, *and* the native libraries
438 are kept installed elsewhere.
439 * Surf binding with SWIG (code generated in maintainer mode only):
440 - plugin to handle callbacks
441 - CPU model only for the moment
444 * Supernovae build mode is definitively removed. It was used to improve
445 inlining and inter-module optimizations. It is nowadays superseded by
446 link-time optimizations commonly available in compilers.
447 * Update ns-3 find lib. Bindings for ns-3 should work again now.
448 * Add boost dependency for surf++
449 * Add new macro for tests
450 - ADD_TESH(name <tesh_args>)
451 - ADD_TESH_FACTORIES(name "thread;ucontext;raw" <tesh_args>)
455 - xbt_bar_t XBT_barrier_init(unsigned int count)
456 - int XBT_barrier_wait(xbt_bar_t barrier)
457 - void XBT_barrier_destroy(xbt_bar_t barrier)
458 * Make the xbt_os_time module public
460 -- Sat May 31 22:39:38 CEST 2014 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
462 SimGrid (3.10) stable; urgency=low
464 The Clean Diaper Release, a.k.a. SimGrid is leak-free.
467 * Reintegrate Java to the main archive as desynchronizing these
468 package is not acceptable anymore (Java is now considered stable)
469 * Add explicit synchronization facilities through semaphores
470 * Bug fix: Task.setDataSize() only changed the C world, not the value
471 cached in the Java world
474 * Dramatically change the way files are handled. API and internals changed, but
475 this part of MSG was not considered as production grade either.
476 * Add explicit synchronization facilities through semaphores
477 * Add a new function MSG_host_get_process_list()
478 * Preliminary DVFS support (see examples/msg/energy/ for details)
481 * SMPI is now included directly in the libsimgrid as the windows
482 linker doesn't force us on splitting it anymore.
483 * Improvements of the SMPI replay tool:
484 - Most of the collective communications are now rooted in the same process as
485 in the original application.
486 - Traces now rely on the same MPI data type as the application (MPI_BYTE was
487 used until now). Multiple data types can now be used in a trace.
488 - The replay tool now supports traces produce either by TAU or a modified
490 - Bug Fix: the compute part of the reduce action is now taken into account.
491 - Gatherv collective is now supported
492 - SimGrid (SMPI for now) can generate replay traces as well. Option -trace-ti
493 of smpirun outputs time independent traces for the current run. One file
494 is created per process. If too many processes are simulated, this behavior
495 can be changed to one file for all processes by using the
496 tracing/smpi/format/ti_one_file flag
497 * smpirun generates the host file if needed (with given host count and platform)
498 * Integration of more than 100 STAR-MPI, MPICH, OpenMPI collective algorithms
499 - allows to select one in particular with --cfg=smpi/coll_name:algorithm
500 - allows to use the decision logic of OpenMPI(1.7) or MPICH(3.0.4) by setting
501 --cfg=smpi/coll_selector:(mpich/ompi)
502 * Support for new functions : MPI_Issend, MPI_Ssend, Commutative operations in
504 * Add a --cfg:tracing/smpi/internals option, to trace internal communications
505 happening inside a collective SMPI call.
506 * Fix the behavior of complex data types handling.
507 * Make MPI_Wtime another synchronization point to take computations into
509 * Replace MPICH-1 test suite by the one from MPICH 3.0.4. Can be built using
510 enable_smpi_MPICH3_testsuite flag in cmake. Run with ctest.
511 * Add all missing Fortran bindings, SMPI should work with Fortran 90
512 (no privatization of global variables yet)
513 * Preliminary DVFS support (see examples/smpi/energy/ for details)
516 * Verification of liveness properties is now available for SMPI applications
517 (in addition to MSG applications)
518 * Bugged examples using SMPI in examples/smpi/mc/
519 * Add --cfg=model-check/visited option. Allows the verification of infinite
520 programs. Detection of loops in the execution thanks to the system state
521 comparison and reduction of the state space to explore. Can be combined with
522 DPOR for safety properties.
525 * Allow to change SimGrid configuration (see --help) within the code
526 thanks to SD_config() as it can be done in MSG.
527 * Add a new function SD_task_set_amount() upon user request.
530 * Handle units for values (10ms, 10kiloflops, 10Bps, 1GB, ...)
531 * Remove rule based routing (no more PCRE dependency)
532 * Add a limiter_link option to cluster tag, to specify a maximum reachable
533 bandwidth in fullduplex mode when it is less than twice the nominal bandwidth.
534 * Add a loopback_bw and loopback_lat options to cluster tag.
535 * Fix the peer tag that could not be mixed with other AS within a Vivaldi
536 routing. Now peers are encapsulated in an AS and have their own private
537 router but this is transparent.
540 * Our own implementation of getline is renamed xbt_getline, and gets
541 used even if the OS provide a getline(). This should reduce the
542 configuration complexity by using the same code on all platforms.
543 * New type: xbt_cfg_elm_boolean.
544 * Allow to use yes/no for boolean configuration options in the command line.
545 * Allow to disable SimGrid cleanups at exit from command line option.
546 There are situations where one may want a simulation to end with an exit.
547 Unfortunately, calling exit may cause SimGrid to segfault, which is quite
548 annoying when scripting around the simulator. Adding a
549 --cfg=clean_atexit:no allows to circumvent this issue.
552 * Lots of memory leaks were corrected in this release.
553 There is no known memory leaks anymore, in all of our 600+ tests.
554 * New command line option --version, to get SimGrid version information.
555 Packagers may want to add extra words to SIMGRID_VERSION_EXTRA defined in
557 * Supernovae builds are deprecated, and expected to be removed in the next
560 -- Sun Nov 17 00:26:44 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
562 SimGrid (3.9) stable; urgency=low
564 The Grasgory release: GRAS is really dead now.
566 * Complete overhaul of the internal host structures scheme.
569 * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
570 was considered as experimental and badly maintained since then.
571 * Keeping it was thus a trap to our potential users, that could take
572 it instead of MSG or SMPI by mistake despite is pity state.
573 * GRAS seems to have very few users (if any), and no one volunteered
574 to maintain it further. It also induces a lot of XBT code (for
575 portability sake), that must be maintained too.
576 * For all these reasons, we killed GRAS. If someone wants to revive it
577 in the future, don't cry, our git history still remembers of GRAS.
580 * Major overhaul. Merge our documentation again as time proved that
581 splitting it was really not helping our users.
582 * Further improve the developer documentation to help newcomers
583 hacking on SimGrid itself. The user documentation (and in
584 particular, the beginner documentation) is still in a sorry state.
587 * Now works on Windows too!
588 * Much more extensive test suite, from MPICH
591 * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
592 (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
593 dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
594 * Bug fix: let task be scheduled when the last dependency to be solved is
595 a control dependency.
596 * Remove SD_load_environment_script function.
597 Use the C sg_platf function if you want to declare a platform
601 * New function: MSG_process_get_number()
602 * Old function documented: MSG_config()
603 * Remove MSG_load_platform_script function
604 Use the C sg_platf function if you want to declare a platform
608 * Change the default value of the TCP_gamma constant (maximal size of TCP
609 congestion window) to a more realistic 4MiB value. If you notice changes in
610 your simulation results, you can fall back to the previous 20k tiny window
611 by adding --cfg=network/TCP_gamma:20000 on command line.
612 * (Hopefully) fix a bug wrt periodic availability and state traces
613 * Bug fix: use default values at start when first event in availability/state
614 trace is not at time 0.
617 * remove the "new_" part of function name sg_platf_new_trace_connect
618 (resulting in sg_platf_trace_connect), since it does not create
622 * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
623 use case where it's really mandatory, and maintaining it was a pain in
625 * New: xbt_fifo_search(), search an item with a user-provided
626 comparison function instead of dumb pointer comparison.
629 * Fix the lua deployment:
630 Use `simgrid.init_application()` before deployment instead of
631 `simgrid.msg_register_application()` after.
634 * Transfer the tracing files into the corresponding modules.
636 -- Tue Feb 5 11:31:43 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
638 SimGrid (3.8.1) stable; urgency=low
640 The "we are told that some people want to also *install* the simgrid
643 * Add missing file "tesh.1" to the archive.
645 -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
647 SimGrid (3.8) stable; urgency=low
649 The Psssshiiiit release: SimGrid jumps into the Cloud.
652 * Add an experimental interface to manipulate VMs. They are mainly
653 process groups with very few intrinsic semantic, but they should
654 allow you to build the semantic you want easily.
655 * New function: MSG_host_set_property_value()
656 * New function: MSG_process_on_exit(). To clean memory in all cases.
657 * Bug fixes that made the host (and link) failures unusable.
658 * Add a way to auto-restart process when the host in which they are
659 executing comes back (ON_FAILURE="RESTART" on deployment file,
660 MSG_process_auto_restart_set).
661 * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
662 please stop using the old ones, they are DEPRECATED.
664 * Deprecate functions MSG_global_init() / MSG_global_init_args()
665 Please use MSG_init() instead. (reducing the amount of entry
666 points in the library helps us).
667 * Make it impossible to link against the wrong version of the lib
668 * Deprecate MSG_clean(). No need to call it anymore.
669 * Function MSG_get_host_number() is not deprecated anymore.
672 * Split the doc into a user guide and a reference guide.
673 * Start a developper guide to help people hacking on SimGrid.
676 * Enable tracing by default. This modules rocks you should use it.
677 * Remove option custom_flags. Now use environment variables CFLAGS
679 * Use default cmake things to detect lua instead of home grown ones.
680 * New option "enable_mallocators" to disable mallocators, for debugging
681 purpose ("on" by default).
684 * Bug fixes around the resource failures: don't let the processes
685 survive the host they are running onto.
686 * Add an interface to auto-restart processes when the host in which they are
687 executing comes back.
688 * Ensures that SIMIX_clean is called automatically. It's not part of
689 the public interface anymore (bindings should be updated).
692 * Bug fix for when SD_Simulate is called with a positive value: be careful
693 when comparing doubles. Sometimes they are different for non significant
695 * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
696 parallel task whose initial work is distributed among host according
697 to the Amdahl's law. Such tasks are created with a parameter alpha
698 that corresponds to the non-parallelizable part of the computation.
699 SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
700 between two sets of workstations assuming a 1D block distribution (each
701 workstation owns a similar share of data) on both sides.
703 These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
704 Data redistribution will be automatically scheduled once parent and child
705 are both scheduled. The filling of computation_amount and
706 communication_amount structures is now done seamlessly thanks to the chosen
708 * New function SD_workstation_dump to display various information
709 * New function SD_task_set_rate to throttle the bandwidth allowed to be used
710 by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
711 bandwidth on the route onto which the task is scheduled and the amount of
713 To divide the nominal bandwidth by 2, the rate then has to be :
714 rate = bandwidth/(2*amount)
715 * Compute tasks that have failed can now be rescheduled and executed again
716 (from their beginning)
717 * Increasing source code coverage (src/simdag is now covered at 95.8%
721 * Re-implement time-independent trace replay using SMPI (at the
722 smpi_smp_* level) instead of MSG. This should replace
723 examples/msg/actions/actions.c
724 * Implement support of MPI Datatypes (vectors, hvectors, indexed,
725 hindexed and structs)
726 * Implement the exchange of non-contiguous data.
727 [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
728 * Correct behavior of smpi/sender_gap and set its default value to 0
729 * Add option to asynchronously send small messages to allow better
730 simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
731 specifies the size in bytes under which messages will be asynchronously sent.
732 * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
733 * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
736 * New C interface to define a platform: XML is now optional.
737 For more info, please check include/simgrid/platf.h.
738 * New interface to define random platforms from the C:
739 For more info, please check include/simgrid/platf_generator.h and
740 examples/msg/masterslave/masterslave_platfgen.c
741 * Export a sg_cmdline dynar containing all the arguments we got from
745 * Two new tracing options for adding comments to trace file so you
746 can track your experiments (see --help-tracing for details).
747 * New option to generate a impoverished trace file (--cfg=tracing/basic:1)
748 * Adding the SimGrid version that generated the trace file as a comment.
749 * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
750 * Fix to avoid key clashes on Paje links
751 * Other minor fixes related to the Paje specification
754 * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
755 and renamed to xbt_str_hash() and xbt_str_hash_ext().
756 * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
757 * Greatly improve the robustness of mmalloc to user errors (such as
758 using an area after freeing it, or freeing it twice)
760 -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
762 SimGrid-java (3.8.1) stable; urgency=low
764 * New module: org.simgrid.trace.Trace (SimGrid trace bindings)
765 Warning: all methods are visible, but only some of them are
766 implemented so far. Check the source (src/jtrace.c)
767 for further information.
768 * New module: org.simgrid.msg.File (SimGrid File management functions)
769 * New Module: org.simgrid.msg.VM (SimGrid interface to mimick IAAS clouds)
770 * Change the meaning of Process.restart: now restart the process from
771 the begining, like MSG_process_restart in C.
772 * Add Process.setAutoRestart: handling of process restart when failed
774 * Add Process.getProperty, Host.getProperty, Host.getProperty: allows
775 you to retrieve the properties of the processes/hosts
776 * Deprecate Msg.clean(): you can just forget about it now.
777 * New function Process.getCount(), that only works when compiling
778 with the not yet released version 3.9 of the C library.
780 * New context factory based on Coroutines. It mandates a modified JVM
781 but then, the simulations run about five times faster, and there is
782 no limit to the amount of processes (beside of the available memory).
784 -- 2012-12-04 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
786 SimGrid (3.7.1) stable; urgency=low
789 * Restore the prototype of MSG_process_create_with_environment() to
790 the pre-3.7 situation by removing the kill_time argument.
791 * Add a MSG_process_set_kill_time() function instead.
794 * Fix weird behaviors when dealing with parallel tasks.
797 * Simgrid is now built as a dll.
798 * Simgrid-java now works on Windows.
799 * Simgrid-Java is now included into Windows package.
802 * First pre-build package for MacOSX.
805 * Fix compilation when using MSG_USE_DEPRECATED.
806 * Fix some compilation issues on Macs and Windows.
807 * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
808 * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
810 We discovered that the Lua console is broken, but we are missing the
811 manpower to fix it right now. The problem existed in 3.7 too, so we
812 are not blocking the release for that. Sorry if you depended on this
813 feature, any help would be really welcome.
815 -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
818 SimGrid-java (3.7.1) stable; urgency=low
820 The "Java aint got to be bloated and slow" release
823 * Various internal cleanups and performance improvement
824 Simulations are expected to run up to twice faster or so
825 * Make Process.kill(process) an instance method, not a static one
826 * User processes are not java.lang.Thread subclasses.
827 This breaks the compatibility (sorry), but previous API was
828 brain-dead, making it impossible to have non-trivial
829 initializations in the process constructor.
830 * Require a full constructor per Process sub-class.
831 Kinda breaks the compatibility (sorry), but this allows a much more
832 efficient way to launch the processes at simulation startup.
833 * Do not embeed our version of semaphores, java 1.5 can be considered
834 as sufficiently prevalent for us to not dupplicate its features.
838 * Add examples for almost every part of the API
839 We spotted and fixed a lot of bugs in the process
841 * New module: asynchronous communication API
842 * New function: Process.sleep()
843 It takes milliseconds as argument, just as java.lang.Thread.sleep()
844 * New module: org.simgrid.msg.Mutex (SimGrid mutexes)
845 * New module: org.simgrid.msg.RngStream (RngStreams random generators)
847 -- 2012-06-12 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
849 SimGrid (3.7) stable; urgency=low
851 The "spring cleanups (before the next Big Project kicks in)" release.
854 * We can specify the SMPI latency/bandwidth factor with command line
855 add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
856 or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
857 You can also use the "config tag" from platform file by adding this line
858 <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
859 (see "example/platforms/tag_config.xml" to use "config tag").
860 Note that the command line supersedes the platform file configuration.
861 * Change the correction factors used in LMM model, according to
862 the latest experiments described in INRIA RR-7821.
863 Accuracy should be improved this way.
864 * Use the partial invalidation optimization by default for the
865 network too. Should produce the exact same results, only faster.
866 * Major cleanup in surf to merge models and split some optimization
867 mechanisms from the core of the models. As a result you can now
868 specify which model to use (e.g., --cfg=network/model:LV08
869 --cfg=cpu/model:Cas01) and which optimization mode to use
870 (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
871 Incompatible combinations should err at initialization. See
872 --help-models for the list of all models and optimization modes.
873 * The CLM03 workstation model was dropped for simplicity because it
874 used the deprecated CM02 network model. Use default instead.
875 * Rename the TCP_gamma configuration option to network/TCP_gamma
876 * Rename the coordinates configuration option to
877 network/coordinates, and document it
878 * Use now crosstraffic keyword instead of the terribly misleading
879 fullduplex keyword. It is activated by default now in the current
880 default model, use --cfg=network/crosstraffic:0 to turn it off.
881 * Ongoing refactoring the model parsing to make XML files optional
882 See include/simgrid/platf.h for details (still to be completed)
885 * Major overhaul of the documentation. Almost instructive now :/
886 * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
887 functions and friends. This interface was considered as
888 deprecated since over 2 years, it's time to inform our users that it is.
889 Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
890 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
891 use these (crappy) functions in your code.
892 These functions will be removed soon. Stop using them now.
893 * Deprecate MSG_get_host_{table,number}
894 Implement MSG_hosts_as_dynar() instead.
895 * Implement MSG_processes_as_dynar() (Closes gforge #13642)
896 * Remove the public field msg_host_t->name. Use MSG_host_get_name()
899 * Stabilize the parallel execution mode of user contexts
900 * Introduce configuration variables to control parallel execution:
901 - contexts/synchro: Synchronization mode to use when running
902 contexts in parallel (either futex, posix or busy_wait)
903 - contexts/parallel_threshold: Minimal number of user contexts
904 that must be part of a scheduling round to switch to parallel
905 execution mode (raw contexts only)
906 * Fix bugs that prevented to use suspend/resume along with
907 synchronization structures.
908 * Fix bugs in process termination that lead to invalid memory access
909 in very specific conditions.
912 * Introduce a parallel mode for the models (controlled by surf/nthreads
913 configuration item). In our tests, running the models in parallel
914 never lead to any speedups because they are so fast that the gain
915 of computing each model in parallel does not amortizes the
916 synchronization costs, even when ultra fast futexes are used.
917 This is released anyway because YMMV.
920 * Performance boost by using a swag internally to compute the set of
921 tasks that are finished and should constitute the return value of
925 * Enable it by default now that it is considered rather stable.
928 * Documentation of the tracing functions.
929 * Performance gains when tracing categorized/uncategorized resource
930 utilization by avoiding calls to get route when updating resource
931 variables. LMM constraints are being used instead.
932 * API changed to set task categories. Use MSG_task_set_category instead
933 of TRACE_msg_set_task_category, and SD_task_set_category instead
934 of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
935 * Bugfix for graphicator, routes not correctly obtained, memory leaks
936 * Examples for link user variables added (see at examples/msg/tracing/)
937 * Deprecated function TRACE_msg_set_process_category completely removed
938 * Trace header updated according to the latest Paje file format
939 * Tracing network lazy updates, no longer obligate users to use full updates
940 * --cfg=tracing/platform:1 also registers power/bandwidth variables
941 * Experimental: let user code declare/set/push/pop application states for hosts
942 * API changed to allow the manual creation of graph configuration files
943 for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
946 * Improve the API of Lua MSG bindings, using the Lua spirit.
947 * Each simulated process now lives in its own Lua world (globals are
948 automatically duplicated). It helps writing simulators. Will allow
949 to run Splay programs within SimGrid in the future.
950 * Add a Chord example in Lua, equivalent to the MSG one.
953 * Start the implementation of a solution to express temporal
954 properties, not only local assertions. This is still an
955 experimental work in progress, stay clear from it to be safe.
959 - Add new runtime parameters --help-logs and --help-log-categories
960 to display information about supported logging parameters and
962 - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
963 don't exists anymore.
964 * Mallocators: allow value NULL for the reset function.
966 - New function xbt_dict_new_homogeneous(void(*)(void*)) to
967 create homogeneous dictionaries, where all the elements share the
968 same free function. Non homogeneous dictionaries will be
969 deprecated in the next release.
970 - Dicts of scalar elements (xbt_dicti_*) are deprecated.
971 - Multi-level dictionaries are deprecated.
973 - new function xbt_dynar_search_or_negative() that is useful when
974 you have less than 2 million elements in your dynar and don't
975 want of the extra complexity of catching exceptions when the
976 element is not found.
978 - Make xbt_os_thread module (for thread portability) public.
979 Documentation is still to come, sorry.
981 - Cleanups and simplifications to make it maintainable again.
982 - Exotic features (such as memalign and valloc) were removed.
983 - The metadata were extended and improved so that the
984 model-checker becomes able to explore and inspect the heaps.
985 - This may induce a performance drop when enable_model-checking is
986 ON in cmake (even if it's not used in the simulation), but it is
987 necessary at this point to get MC working.
989 Turn model-checking OFF if simulation performance matters to you.
990 Not enabling it at runtime is not enough, disable it in cmake.
992 -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
995 SimGrid (3.6.2) stable; urgency=low
997 The "Not coding new stuff allows to polish old things" release.
1000 * New bindings to the NS3 packet level simulator (experimental)
1001 * Use the raw (efficient) execution contexts instead of the sysv
1002 (portable) ones when possible.
1003 * libpcre is now mandatory in any cases since not using it led to
1004 severe performance loss and possibly other issues
1005 * Update the XML platforms:
1006 - G5K: include the latest machine in Nancy
1007 - GridPP and LCG: new platforms
1008 * Documentation was partially updated, at least (more to come)
1010 Bug fixes, cosmetics and small improvements
1011 * Free terminated processes before the end of the simulation to avoid
1012 exhausting the memory of users having very dynamic amount of
1014 * Bug fix and cosmetics about canceling non-running tasks
1015 * Bug fix about the dot loader's issues when using libcgraph
1018 * Create an installer for windows with nsis (amd64 and win32)
1019 - Add an hello world project to illustrate simgrid project creation.
1020 - Embed libpcre into the Simgrid installer to avoid
1021 its compilation burden
1022 * The raw execution contexts should work on Apple now
1023 * Port to Windows 64 bits
1024 - Sysv contexts now have an implementation for this arch
1025 - GRAS communication features now support this arch
1026 * Drop support for borland compiler on windows
1027 - this code was not maintained, and we kinda depend on gcc nowadays
1028 * Fix portability issues on kfreebsd/gnu: build error about semaphores
1029 * Fix portability issue on unstable ubuntu: linker became picky on
1032 -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1034 SimGrid (3.6.1) stable; urgency=low
1036 The "Oops, we broke Macs too" release
1039 * Fixed contexts detection so that raw ones are used when possible
1040 * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
1041 leads to a strange error, with user code segfaulting sometimes when
1042 the generated code is not perfectly aligned (which is not
1043 controllable from the user side, depends on the amount of code)
1046 * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
1048 -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1050 SimGrid-java (3.6) unstable; urgency=low
1053 * Split of every thing from simgrid v3.5 into a separate package.
1055 -- 2011-10-05 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1057 SimGrid (3.6) stable; urgency=medium
1059 The Summer Release, also known as the "OMG! They Killed Kenny!" version
1062 * Bindings now constitute their own package, separated from the main one.
1063 Rationale: reduce our maintenance nightmare by reducing the module coupling
1064 They will soon be released on their own on gforge.
1066 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
1067 svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
1069 GRAS: It is not considered as stable anymore, but experimental. Sorry.
1070 * It's not quite deprecated for now because we have no replacement,
1071 but it may soon become the case.
1074 * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
1075 * Fortran: New user-level cache variable to store the rank of the running
1076 process. This improves performance by an order of magnitude.
1077 * C: New coccinelle script to automatically locate and modify global and
1078 local static variables.
1079 * Improved SMPI network model with a sender-side gap to account for multiple
1083 * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
1084 only say if a communication is finished, no matter whether it succeeded or
1085 failed. You can call MSG_comm_get_status() to know the status of a finished
1087 * New function MSG_task_dsend() to send a task and detach it. When a
1088 communication is detached, you are never notified of its success or failure
1089 and the memory is released automatically once it is finished. This function
1090 is useful when you don't care about the end nor the success of a
1092 * Change the prototypes of action replay. Sorry for inconvenience,
1093 but this is really more efficient this way (and to adapt your code,
1094 you just have to fix the initialization, that shouldn't be too long)
1095 * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
1096 ever managed to do anything useful with it.
1097 * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
1098 takes a dynar of communications. It returns immediately and gives the
1099 index of a finished communication (if any).
1100 * New example: a basic implementation of the Chord P2P algorithm.
1103 * New model for multi-core CPUs. You can now use the core attribute to
1104 precise the number of cores of a host. This is a basic model. Every
1105 process running on the host receives at most the power provided in
1106 the DTD (throughput<=power). Total throughput of process cannot exceed
1108 * New peer tag. This peer tag creates a tiny AS comprising a host and a
1109 router linked by an up-link and a down-link (possibly asymmetrical).
1110 This kind of pattern allows to easily build last-mile model style platforms.
1111 Aggregating such patterns in a rule-based AS is thus the technique of
1112 choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
1113 * New model for Vivaldi routing. We transformed the Vivaldi network model
1114 into a Vivaldi routing model (based on the rule-based model). This allows to
1115 combine Vivaldi based latencies with last-mile platforms.
1118 * Added a check for NaN of IEEE754 infinite in the double entries of
1120 * Introduce a new context factory "raw", highly inspirated from the
1121 ucontext factory, but using manually crafted functions in assembly to
1122 do the work in an efficient manner.
1123 * Allow to change the used context factory at run time, not only at
1124 compilation time. Use --cfg=contexts/factory:raw for maximal speed.
1125 * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
1126 contexts at runtime (only with raw contexts or ucontexts).
1127 * Completely rewrote this module to allow parallel execution of user
1128 processes. Use --cfg=contexts/nthreads:N to execute user processes
1129 with N parallel threads (the default is 1, meaning no parallelism).
1130 * Allow to decide dynamically between sequential and parallel modes.
1131 When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
1132 processes in parallel only when their number is greater than or equal to P
1134 * Added a check for NaN of IEEE754 infinite in the double entries of
1138 * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
1139 won't output the state of processes when interrupted with Ctrl-C
1140 * Add a new function xbt_dynar_to_array that transforms a dynar into a
1141 NULL-terminated array. This may solve backward compatibility issues
1142 due to the change to return type of SD_simulate. See also:
1143 http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
1144 * Add new macros with variable number of arguments.
1145 - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
1146 - in xbt/asserts.h: xbt_assert
1147 - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
1148 - in xbt/ex.h: THROWF and RETHROWF.
1149 Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
1151 * Change xbt_die() to accept a format string with arguments, just like printf.
1152 * New data structure: xbt_lib_t, like a dict but more general and with better
1156 * New configuration options
1157 Options triva/categorized and triva/uncategorized can be used to generate
1158 graph configuration files for Triva visualization tool.
1159 * Configuration option tracing/platform is renamed to tracing/categorized
1160 * XBT logging makes tracing error checks easier, new root log hierarchy: instr
1161 * New TRACE_user_link_variable interface:
1162 User provides the name of the link and the tracing variable to attach to it
1163 * the declaration of tracing categories must be done after the environment
1165 * simpler tracing interface, just one way to declare categories
1166 TRACE_category or TRACE_category_with_color, it is up to you
1167 * links in the trace file are again identified by their names
1168 * trace contains the full platform hierarchy exactly as declared using the ASes
1169 * Options tracing/msg/[task|process]:1 groups the process by hosts
1170 for both cases, tasks and processes must have names that are unique during the simulation
1171 these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
1172 * The experimental option tracing/msg/volume is deprecated
1173 its functionality may be reincorporated if needed
1175 The tracing generates a trace file with unordered timestamped events,
1176 because of the way the core simulator (surf) works. A script available
1177 at the tools directory (fix-paje-trace.sh) can be used to put the events
1178 in order. We have changed the tracing so it can generate ordered timestamped
1179 events in the final trace, but depending on the simulator (and how much time
1180 is simulated) that can lead to a huge memory utilization. It is deactivated
1181 by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
1183 Build Infrastructure
1184 * Define a SIMGRID_VERSION macro in simgrid_config.h.
1185 - We are trying hard to keep the API stable, but it may happen that
1186 some things change (we're a research project after all, not a
1187 nuclear plant operating system). If such things should happen, you
1188 could rely on that macro to adapt.
1189 - current value: 30600 for 3.06.00, aka 3.6
1190 * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
1191 a number that can be compared with SIMGRID_VERSION.
1192 * Add a build option -Denable_debug (set to ON by default): when set to OFF,
1193 assertions and verbose/debug logging events are disabled at compile time.
1195 -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1197 SimGrid (3.5) stable; urgency=medium
1200 * New feature to any SimGrid-based simulator: Model-Checking
1201 Check SIN#1 for more details.
1204 * New Model SMPI (three-interval linear regression for correction factors)
1205 See RR-7426, available at http://hal.inria.fr/inria-00527150
1206 * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
1207 * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
1208 * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
1209 * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
1210 * See also src/smpi/README
1215 - Tracing API changes: TRACE_start and TRACE_end should not be called
1216 by user-code. They are automatically called by simulators created
1217 with SimDAG, MSG and SMPI if the toolkit is compiled with
1218 tracing_enabled=ON. Categories declaration and utilization remain the
1219 same for MSG and SimDag.
1220 - A function was added to the tracing API to declare categories with
1222 - TRACE_category_with_color (char *category, char *color)
1223 where color must be in the following format
1224 "%f %f %f", red, green, blue
1225 and red, green, blue are float values in the interval [0, 1]
1226 - User can specify NULL as color parameter, or continue calling
1227 TRACE_category (cat)
1228 On that case, the tracing system will define random colors
1229 - The following command-line options are supported:
1230 --cfg=tracing/filename:msg.trace
1231 --cfg=tracing:1 (activate tracing, needed to use others)
1232 --cfg=tracing/platform:1 (categorized resource use)
1233 --cfg=tracing/uncategorized:1 (uncategorized resource use)
1234 --cfg=tracing/msg/task:1 (task creation)
1235 --cfg=tracing/msg/process:1 (process creation, migration)
1236 --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
1237 --cfg=tracing/smpi:1 (SMPI interface tracing)
1238 --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
1239 - examples of examples/msg/tracing updated
1241 - DAXLoader and DOTLoader functions can generate tasks with categories
1242 - A new function to attribute a category to SD tasks:
1243 TRACE_sd_set_task_category (SD_task_t task, char *category)
1244 * Tracing the MPI interface implemented by SMPI
1245 - Collective operations are traced with states
1246 - Point-to-Point operations are traced with states/links
1247 - Tracing activated by a parameter "-trace filename" passed
1248 to smpirun during execution (considering that simgrid
1249 is compiled with tracing enabled)
1250 - To run the simulation with gdb, the simulator
1251 accepts --cfg=tracing/smpi:1 to trace SMPI
1252 - tesh files to check if smpi tracing is ok
1253 - See examples/smpi/NAS/DT-trace
1254 * GTNetS tracing re-worked
1255 - adaptation to the tracing system of GTNets to cope
1256 with modifications regarding the fullduplex mode
1257 - new tesh files to check if gtnets tracing is ok
1260 * Asynchronous communications through the functions:
1261 MSG_task_isend/irecv and MSG_comm_test/wait/waitall
1262 * New function: MSG_load_platform_script()
1263 to make possible using a lua script instead of XML files to set up platforms
1264 * New function: MSG_set_function
1265 to associate functions to processes, used when bypassing the parser
1266 * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
1268 Platforms: Add some more examples in examples/platforms
1269 * Grid'5000: see www.grid5000.fr
1270 * *_30000_hosts.xml: various huge files [mainly scalability testing]
1273 * Change the XML format. This is a very important modification. SimGrid
1274 3.5 introduces a new hierarchical format based on the notion of
1275 Autonomous Systems. Compatibility with old format is ensured
1276 through the perl script provided in the install bin directory
1277 bin/simgrid_update_xml.
1278 It is now possible to build platforms with specific routing
1279 mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
1280 connect several platforms together. We will try to provide soon
1281 set of realistic platforms exploiting these properties (have a
1282 look at examples/platforms/ for the moment).
1283 * Take the opportunity of the XML format change to be a good XML citizen:
1284 rename link:ctn to link_ctn and similar changes (also dealt with by
1286 * Add a new routing scheme (rule-based) using regular expressions. It
1287 enables to have an extremely low memory footprint when the
1288 underlying routing is simple and can be compactly described. You
1289 need to have libpcre4-dev (perl regular expressions) installed if
1290 you want to use this routing scheme.
1291 * Revive the cluster TAG and allow to easily and efficiently (both in
1292 term of memory and speed) connect clusters together. Have a look
1293 at teshsuite/simdag/platforms/ to see how this can be done. With
1294 this tag, you can create clusters with thousands of tasks at no
1295 cost (have a look at examples/platforms/).
1296 Note: clusters are implemented as ASes, so there is no need for an
1297 enclosing AS tag if you have only one cluster in your platform.
1298 * Add new generic functions in the public interface that allows the user
1299 to call SURF 'create_resource' methods from your code (same
1300 functionality as the XML bypass mechanism but with a much lighter
1302 * Add a new model (enabled through command line --cfg=network/model:SMPI)
1303 that uses a piecewise linear approximation to produce better
1304 results when exchanging small messages.
1305 * Add a new parameter to handle correctly full duplex link and account
1306 for interferences between uplink and downlink communications
1307 (activate with --cfg=fullduplex:1).
1310 * Rename the SD_READY (all dependencies are satisfied and task is
1311 scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
1312 dependencies are satisfied) state.
1313 This prevents a confusion between the notion of "ready to schedule"
1314 (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
1315 simulated" (SD_RUNNABLE) used by the simulation kernel.
1316 * Change the way a task is considered as ready. Instead of removing
1317 dependencies when a task is done, a counter is decreased. This way,
1318 it is always possible to reach ancestors thanks to the
1319 SD_taks_get_parents function (even after the end of the simulation.)
1320 * Change the return type of SD_Simulate from (SD_task_t*) into
1321 xbt_dynar_t. This function was in handling a dynar internally and
1322 converted it into a NULL terminated array for historical reasons.
1323 * New function SD_dotload(char*) to load a DAG described in dot
1324 format. This loader and the corresponding examples require the
1325 installation of the graphviz library.
1326 * Fix a bug in the management of tasks of size 0 in the surf network
1327 models. This problem was only visible with SIMDAG and you should
1328 thus disregard results produced with earlier versions if you
1329 relied on this feature (some tasks were blocked because of this).
1330 * Fix a bunch of stuff that prevented to use classical models with SIMDAG
1331 even though your applications were doing only point-to-point
1332 communications and sequential computations. Now you can really use any
1333 model you want (of course, if you create real parallel tasks, which are
1334 not implemented in most models beside ptaskL07, this will abort).
1335 * Add an example that schedules a DAX on an heterogeneous platform
1336 using a Min-Min strategy.
1337 * New function SD_workstation_get_current_task() that returns the kind
1338 of task currently running on a workstation in the sequential access
1340 * Raise some warnings when unexecuted tasks remains at the end of the
1341 simulation. This is usually caused by cycles in the DAG.
1344 * New function: SIMIX_process_set_function() called by MSG_set_function
1345 * Change the underlying waiting queue in semaphores so that a process
1346 can wait on several of them simultaneously (as in waitany).
1347 * Fix the way to handle tokens in semaphores so that all access patterns
1348 work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
1349 * kill the dirty pimple SIMIX_message_sizes_output()
1350 Please use (proper) visualization instead
1353 * New data container: setset (set of sets of elements)
1354 * New module: mmalloc (mapped malloc, allowing to have several
1355 independent segments of malloc)
1356 * New function: xbt_dict_cursor_set_data()
1357 * New functions: xbt_dynar_sort(), xbt_dynar_compare()
1358 * New function: xbt_dynar_is_empty()
1359 * New function: xbt_fifo_get_last_item()
1360 * Fix xbt_dynar_shrink(): use the right element size.
1361 * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
1362 uninitialized areas during expand.
1363 * Fix semaphores: previous implementation was severely broken.
1364 * Use library init/fini functions for our initialization.
1365 - you can use logs and other feature as soon as you want in your
1366 code (even before the xbt_init / MSG_init)
1367 - xbt_exit is now a no-op and produce a warning when used.
1370 * Port GRAS to new SIMIX mechanisms. This allows gras users to
1371 benefit from the latest improvement to the simulation kernel.
1372 * Kill measurement sockets for now. If you rely on them, sorry. This
1373 release is not for you. This feature will be reintroduced in the
1374 future, but we cannot delay the release any further.
1375 * New function: gras_msgtype_get_name().
1376 * Implement gras_agent_spawn in RL too (the prototype changed a bit)
1377 * Fix (at last) the pmm example: it should not randomly fail anymore.
1379 Build chain: bug fixes and overall polishing
1380 * Cmake is now stable enough. Hence, we killed the autotools.
1381 * Port to windows ( TM :)
1382 * Fix the 'make install' target.
1383 No need to use 'make install-simgrid' anymore
1384 * Introduce a 'make dist' target compiling a *source* archive
1385 'make package' compiles a binary archive
1386 * Compile java files only on need
1387 * Add --cd and --setenv command line options to tesh
1388 * Out of source builds are not fully supported yet, but we are close
1389 * Enable supernovae and optimization flags by default for our users
1392 * Add layer to set up environment directly from lua, without XML.
1393 * The effect of gras_stub_generator can be achieved through
1394 lua too (check examples/gras/console/ping_generator.lua)
1396 -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
1398 SimGrid (3.4.1) stable; urgency=low
1400 The "Polishing easter eggs is probably a good idea" release.
1401 This is a bug fixes release only.
1405 * Fix a bug preventing the tasks from begin garbage collected.
1408 * Fix a bug occuring when a host involved in a communication fails.
1409 This was not detected properly by the other peer involved in the
1410 communication. Now, it's reported as a network error.
1413 * Warn the user about loop dependencies in data flow of DAX files
1414 * Obey the control-flow dependencies of DAX files
1417 * Add option "enable_smpi" allowing to not compile SMPI.
1418 Probably useful for the (Mac) users experiencing a build error here
1419 * Improve the detection of lua5.1 and ruby1.8
1421 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
1423 SimGrid (3.4) stable; urgency=low
1425 The "Easter in Cargese" release. Also known as (major changes):
1427 * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
1428 ~> bindings were greatly improved
1429 ~> new tracing infrastructure for better visualization introduced
1431 * the "Welcome to configury modernity" release.
1432 ~> we switched from autotools to cmake, and improved our cdash
1435 A more detailled list of changes follow (full detail in svn log).
1437 Java Bindings: Various Cleanups
1438 * (install java-gcj-compat-dev on debian-like to use them)
1439 * Remove put/get: no need to export deprecated interface in Java
1440 Use send/receive instead.
1441 * Cleanup the examples and add a README per directory
1442 * Remove example autoDestination (that's the only way to go now)
1443 * Remove example explicitDestination (was a plain copy of basic)
1444 * Make JniException a runtime exception, so that there is no need to
1445 declare the fact that you may encounter such a beast. I guess that
1446 nobody will ever want to survive such error.
1447 * Create specific errors for each MSG case of failure:
1448 host failure, transfer failure, timeout, task cancelled
1449 * Cleanup the exceptions that may get thrown by each function
1450 * Other internal cleanups in Java bindings. Performance still bad :/
1451 Ruby and Lua Bindings: create them
1452 * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
1453 * That's new and great, you should try them out.
1454 Same functionalities than Java bindings, only even less polished
1456 * Kill the useless "rate" argument of SD_task_get_execution_time()
1457 Everyone used to provide -1 as a value, it was not used, and the
1458 semantic of a possible use wasn't even clear.
1459 * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
1460 either as comm costs or compute costs to mean that there is no
1461 such thing for that specific task.
1462 * Add a SD_task_set_name() function
1463 * Fix SD_task_unschedule() on typed tasks
1464 * Fix SD_task_get_execution_time() to return seconds, not flop*sec
1465 * In DAX loader, accept useless 'level' attributes to <job> since
1466 LIGO DAGs have them (seem to be to ease graphical representation).
1468 * Add an example masterslave_mailbox.c using send/receive and not
1469 the deprecated put/get interface.
1470 * Kill the MSG_paje_output() function. It's a noop since 2 years.
1471 * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
1473 * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
1474 (declare MSG_USE_DEPRECATED to still have the old name)
1475 * Add a MSG_task_set_data() function
1476 * About trace replay (see examples/msg/actions):
1478 - Allow to work with splitted trace files for each process
1479 Give the specific trace file as argument of each process,
1480 and call MSG_action_trace_run(NULL)
1481 You can still have one merged file for all processes.
1482 - Fix implementation of collective operations
1483 * Allow task_execute() on 0-sized tasks (closes #10063)
1485 * This is the first release of SimGrid where SMPI is not considered
1486 beta anymore (even if some corners should still be improved)
1487 * Port over the new SIMIX_network submodule (internal refactoring)
1488 * Basic support to log events as with SMPE (use --cfg=SMPE:1)
1489 * Implement more missing elements of the standard:
1491 - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
1493 - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
1494 MPI_Scan() MPI_Get_processor_name()
1495 - Added implementation of missing case for Alltoall (warning: it's
1496 *not* the bruck variant from OpenMPI; based on Alltoallv instead)
1497 - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
1498 SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
1499 SMPI_MPI_Allgatherv()
1500 * Bug fixes include:
1501 - MPI_Waitsome() was broken
1502 - Allow relative includes in smpicc
1503 - Command line cfg argument 'reference_speed' was ignored...
1504 - Some functions did not properly lead to auto-benching of user code
1505 - smpicc passes -O2 by default (just like openmpi one)
1507 * add SIMIX_action_suspend() and SIMIX_action_resume() functions
1508 * Bug fixes about timeouts during communications
1509 * add SIMIX_message_sizes_output() as a pimple to write to file the
1510 amount of messages per size. Use gnuplot to get histogram.
1511 Pimple because that's the only user-visible function of simix,
1512 defined directly in xbt.h (irk, sorry)
1514 - Add a SIMIX_sem_get_capacity() function
1515 - Fix interactions with processe resume/suspende
1516 - release_forever() was stupidly broken
1517 - Fix SIMIX_display_process_status() for processes in a semaphore
1518 - Make SIMIX_sem_block_onto() user-visible
1519 * Refactoring context stuff:
1520 - Use pseudo-OOP for better modularity
1521 - reimplement SIMIX_process_kill() without process_schedule() so
1522 that the latter can take as invariant that it is called from
1524 - Merge context_start into context_new for sake of simplicity
1526 * Add a Vivaldi network model, coded live during SUD'10 ;)
1527 * Rename configuration variables to start a hierarchy:
1528 o cpu_model -> cpu/model
1529 o network_model -> network/model
1530 o workstation_model -> workstation/model
1531 * New configuration variables:
1532 o network/bandwidth_factor: correction to bandwith
1533 o network/latency_factor: correction to latency
1534 o netwotk/weight_S: correction to the weight of competing streams
1535 * Add a long description to the models, that users can see with such
1536 argument on the command line: --cfg=cpu/model:help
1537 * --help-models display the long description of all known models
1539 * config: add the ability to set a default value after registration
1540 Does not override any previously set value (e.g. from cmd line)
1541 * dict: allow to have integer key and data.
1542 When so, you need to use the following functions
1543 void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
1544 uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
1545 void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
1546 In contrary to regular dicts, the key is not malloced before copy.
1547 Mixing scalar and regular elements in the same dict is not tested
1549 * Allow to use xbt_dynar_shrink() to expend the dynar instead
1550 Tracing for Visualization:
1551 * SimGrid is now instrumented in order to generate a trace file for
1552 visualization analysis: to use it, need to compile SimGrid with the
1553 "tracing" option enabled, and instrument the program using SimGrid with
1554 TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
1555 (among other functions).
1556 * The instrumentation only traces the platform utilization for now
1557 * Documentation to use the tracing functions and how to analyze the
1558 traces with the Triva tool is written.
1559 * More information about: SimGrid FAQ (in the section Tracing Simulations
1562 * We moved to cmake as default build system. Autotools support will
1563 be dropped soon. Check the FAQ for more info about how to use it.
1564 * Greatly improved our cdash/ctest interactions
1565 Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
1566 * Added memory checking tests with valgrind; lot of memleak fixing.
1567 This may be the first release of simgrid with so few memory issues
1568 * Added code coverage tests.
1569 Our coverage is still improvable, but at least we see it on cdash.
1571 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
1573 SimGrid (3.3.4) stable; urgency=low
1575 The "Desktop Grid needs love too" release (also called Xmas release).
1577 Models improvements:
1578 * Major speedup in the maxmin system solving by using lazy evaluation
1579 Instead of solving completely the maxmin system at each iteration,
1580 only invalidate (and recompute) the modified parts.
1581 This new feature is enabled in default models but you can try to
1582 turn it on with "--cfg:maxmin-selective-update=1" for other models.
1583 * Cas01 IMproved as default CPU model
1584 This CPU model is the same Cas01 model, but it uses the
1585 maxmin-selective-update flag and a heap structure to manage
1586 actions on SURF kernel.
1587 It reduces the complexity to find the next action to finish and,
1588 consequently, it's faster than the old Cas01.
1589 This is the new default CPU model (Cas01).
1590 * Rename the old Cas01 model to Cas01_fullupdate
1591 Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
1592 Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
1593 * CpuTI (CPU Trace Integration)
1594 A new CPU model whose objective is simulate faster when using
1595 availability trace files.
1596 Instead of using a full featured, over engineered maxmin system for
1597 CPU modeling, this model does the pre-integration of traces files
1598 to calculate the amount of CPU power available, and so, executes
1599 faster than the old CPU models.
1600 Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
1601 * Use LV08 as default network model since it gives better accuracy
1602 for small messages and shouldn't change things for big ones.
1603 Use --cfg=network_model:CM02 to get the previous behavior.
1606 ******************************************
1607 *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
1608 ******************************************
1609 * The new CPU model may changes simulations!
1610 The point is that events occurring at the exact same timestamp
1611 are not scheduled in the same order with the old and new
1612 version. This may be enough to completely change the execution
1613 of simulations in some cases.
1614 * The new network model will change simulations!
1615 This new model is more realistic than the previous one, so you
1616 should consider redoing your old experiments with this model.
1617 Sorry for the inconvenience.
1620 * Introduce the supernovae compilation mode
1621 When compiled that way, the whole SimGrid (or almost) is put in a
1622 single compilation unit and compiled in one shoot.
1623 This is to help gcc which has difficulties to inline stuff from one
1625 The speedup seem to be above 15%, althrough more tests are needed on
1626 amd64 to confirm that gain.
1629 * Port of MSG's mailbox on top of SIMIX network
1630 The put/get mechanism was greatly simplified on the way.
1633 * New SIMIX network module. Provides:
1634 - Mailbox: rendez-vous mechanism to find with who you want to speak
1635 - Synchronous send/recv: easier and hopefully faster since the
1636 logic is handled in the maestro process directly now
1637 - Asynchronous send/recv: you dreamt of it? It's here now
1638 Too bad that nobody cared enough to propagate the change to MSG.
1639 * Add semaphores as SIMIX synchronization mechanism.
1642 * new function SD_daxload(char*) to load a DAX file
1643 (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
1644 * Introduce typed tasks. Specify its kind and cost at creation.
1645 At scheduling, just give where it should be placed, and the cost
1646 for each involved resource is automatically computed.
1647 Existing constructors so far (more to come of course):
1648 - SD_task_create_comm_e2e() for end-to-end communication
1649 - SD_task_create_comp_seq() for sequential computation
1650 Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
1651 * new function SD_task_dump() for debuging display
1652 * new function SD_task_dotty(task,FILE*) writing to file the info
1653 about the task in dotty format
1654 * SD_task_dependency_exists() can now cope with having one of its
1655 arguments NULL. If so, it tests whether the other argument has any
1657 * Add getters on list of preceding/following tasks:
1658 SD_task_get_parents(task) and SD_task_get_children(task)
1659 * Add getters on amount of workstations and list:
1660 SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
1661 * Add getter on task kind: SD_task_get_kind(task)
1662 * Update the start_time and finish_time of tasks on completion/failure
1663 * Bugfix: Remove task from state swags when destroyed
1666 * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
1669 * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
1670 dynar with one separate thread per value of the dynar.
1671 * Change the prototype of xbt_thread_create(), sorry.
1672 Added a boolean parameter indicating whether we want to join this
1673 thread (used in SG only for now)
1674 * Implement xbt_thread_join and xbt_thread_yield in SG also.
1677 * GTNetS wrappers should now be usable again (and betterly tested too)
1678 * Fix a major regression from 3.2 where the timeout provided to
1679 MSG_task_put_with_timeout() was used as absolute time before which
1680 the comm should be done.
1681 * Start to fix the <cluster> tag.
1682 - Internal links should be good now (beside of the loopback, which
1683 use the private link instead)
1684 - paths to the external world is still rather broken
1685 - the <route:multi> tag is just broken. Actually that's brain-dead.
1686 We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
1687 to make it less stupid
1688 ** Check your platform with teshsuite/simdag/platforms/flatifier **
1689 * Fix a source-level compatibility glitch from 3.2: after defining
1690 MSG_USE_DEPRECATED, you can use the old name
1691 MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
1692 * Allow to compile from the SVN with automake 1.11
1693 * Fix some problems when using the "start_time" tag in deployment XMLs.
1694 * Fix #8569: XBT/synchro.h has redundant declarations
1695 * Fix #8563: MSG return values and exceptions
1696 Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
1697 * Integrate patch #8636: Obey DESTDIR when installing documentation.
1698 Thanks to Robson Peixoto.
1699 * Fix a vicious bug in dictionaries inducing that some elements were
1700 not freed on xbt_dict_free()
1702 Portability report of this version:
1703 * Main portability targets:
1704 - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
1705 on (amd64/i386/ia64)
1706 - mac leopard on i386
1707 Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
1708 but nothing critical.
1709 * Other platforms: windows, AIX and others were not tested for this release
1711 Timing report of this version:
1712 * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
1713 scenario parameters). From 8h to a few seconds in desktop grid settings.
1714 * Supernovae brings about 25% speedup on i386.
1716 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
1718 SimGrid (3.3.3) stable; urgency=low
1720 The "Need for Speed" release.
1722 The timings done to validate the 3.3.2 were faulty.
1723 Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
1725 The problem was a conversion from a manually handled vector to
1726 xbt_dynar_t on the critical path.
1727 xbt_dynar_foreach calls functions, inducing stack management crap.
1729 We inlined these functions and xbt_dynar_foreach is now breath taking.
1730 We also inlined xbt_swag_belong on the way.
1732 Here are some approximate speedup measurements (on master/slaves
1733 simulations lasting between 10s and 20s each):
1734 3.3.1 -> 3.3.2: about same performance
1735 3.3.2 -> 3.3.3: 40% speedup
1736 3.3.1 -> 3.3.3: 40% speedup
1737 3.3.1 with inline patch -> 3.3.3: 30% speedup
1739 Our reading is that the refactoring which occurred in 3.3.2 made us
1740 suffer much more from the xbt_dynar_foreach low performance, but
1741 once we solved this, this refactoring proved to be very performance
1742 effective. From the 40% speedup, somehow, 10% are due to the
1743 inlining and 30% to the refactoring.
1745 That's a pitty that gcc cannot inline functions placed in other files
1746 alone. We have to choose between:
1747 - break the encapsulation (by putting private data structures and
1748 accessors in headers files to help gcc)
1749 - live with low performance
1750 - switch to a decent compiler such as icc (not quite possible).
1752 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
1754 SimGrid (3.3.2) stable; urgency=low
1756 The "Simplicity does not preceed complexity, but follows it" release.
1758 The main contributors of this release were (lexical order):
1759 Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
1762 * Extract the routing logic into its own object.
1763 (was dupplicated in network.c and workstation_LV07.c;
1764 Allows to implement other ways of storing that info)
1765 => kill now useless network_card concept
1766 - Use dynar to represent routes (instead of void** + int*)
1767 - kill link_set (use surf_network_model->resource_set instead)
1768 - Add a command-line option to choose the routing schema to use
1769 - Add three new models:
1770 * Floyd (shortest path computed at initialization)
1771 * Dijikstra (shortest path recomputed all the time)
1772 * Cached Dijikstra (shortest path computed on need)
1773 All these models where contributed by Silas De Munck, and are
1774 described in his ICCS09 paper.
1776 * Simplify model declaration
1777 (less redirections, less function to write when defining a model)
1778 - Factorize stuff between models:
1781 surf_model_resource_set(model)
1782 surf_model_resource_by_name(model, name)
1783 - Unify the types of models in s_surf_model_t (using an union)
1784 - Embeed fields of common_public directly into s_surf_model_t
1785 - Rename model methods:
1786 action_free ~> action_unref
1787 action_change_state ~> action_state_set
1788 action_get_state ~> action_state_get
1789 - Change model methods into functions :
1790 (model)->common_public->action_use ~> surf_action_ref
1792 * Implement a generic resource; use it as ancestor to specific ones
1793 (allows to kill duplicated code in models)
1794 Drawback: timer command don't need no name nor properties;
1795 workstation_CLM03 don't need no properties
1796 (but I guess we can live with those few bytes wasted)
1798 * Improve the action object model
1799 - implement a constructor avoiding dupplicated code about field
1800 initialization in generic_action part.
1802 * Kill the SDP model: it has an external dependency, is deprecated
1803 in flavor of modern lmm models, and didn't compile since a while
1806 * Relocation of the context module from XBT to SIMIX.
1807 (the context were decoupled from the simix processes, duplicating a lot of code)
1808 => a lot of code was factorized
1809 - less overhead is introduced during scheduling
1810 - simpler API for the context factory
1811 - the logic for process creation,destruction and manipulation was simplified
1812 * Simplification of the s_smx_process_t data structure.
1813 => accesing the simix level data associated to a process is faster now,
1814 and the code is a lot more readable.
1817 * Implement some more MPI primitives:
1818 MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
1819 -implementation: Bcast: flat or 2-ary tree (default),
1820 Barrier: 4-ary tree,
1822 Allreduce: Reduce then Bcast
1823 Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
1824 Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
1825 Alltoallv: flat tree, like ompi
1827 * Add support for optimized collectives (Bcast is now binomial by default)
1828 * Port smpirun and smpicc to OS X
1831 * Kill SD_link_get_properties: hard to maintain and makes very little sense
1832 Shout out if you used it.
1835 * Display the list of still queued messages in SG mode when existing
1839 * Add xbt_set_get_by_name_or_null() [Silas De Munck]
1840 * Add xbt_graph_node_get_outedges() [Silas De Munck]
1841 * Add xbt_str_from_file(FILE*)
1842 * Add xbt_dict_get_key achieving a linear reverse search
1843 * Remove the context module
1845 Portability report of this version:
1846 * Main portability targets:
1847 - Linux(debian)/x86/context
1848 - Linux(debian)/x86/pthreads
1849 - Linux(debian)/amd64/context
1850 - Linux(debian)/amd64/pthreads
1851 On these, we still have the eratic breakages of gras/pmm and
1852 amok/saturate_sg reported in previous version. We still think
1853 that the tests are the cause of the fault, not the tested code.
1855 - Mac OSX Leopard/x86/context
1856 Still false negative in tesh autotesting.
1857 Smpi still fails, but this time because readlink does not accept -f
1858 Everything seems to work properly beside of that.
1861 - AIX version 5.3 (only tested contexts this time)
1862 Smpi still fails there because mktemp is not installed.
1863 Everything seems to work properly beside of that.
1865 I managed to compile it for the first time, but several breakages.
1866 Won't delay the release for this exotic platform.
1868 * Windows: it's still lagging behind. If you want to help, please
1871 Timing report of this version:
1872 This version seem to be more than 5% faster than 3.3.1 (on linux
1873 64bits with contextes). The gain is less than expected, we are
1874 investigating this for next release.
1876 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
1878 SimGrid (3.3.1) stable; urgency=low
1881 * Implement a --cfg-help to show existing configuration variables
1882 * Build chain do not require doxygen in maintainer mode
1885 * fix a bug on struct sizeof computation, which prevented the
1886 exchange of arrays of structs in some conditions
1887 - added a regression test about this in datadesc_usage
1888 * Allow the exchange of 0-long dynamic vectors.
1889 - for that, use -1 as indicator of dynamic size instead of 0
1890 - This implied to change any size from unsigned long to long,
1891 reducing a bit communication abilities, but I guess that with
1892 64bits being quite common, this is more than enough.
1893 - This also induce a protocol change, thus bumping network protocol
1894 version from 0 to 1 (if we have external users, we have to get
1895 clean on that point too ;)
1896 - added two regression tests about this in datadesc_usage
1897 * Be more verbose when propagating local exceptions
1898 This helps debugging.
1899 * Display the status of simulated processes when receiving SIGINT in
1903 * Allow to control the simulation from a trace file.
1904 New functions MSG_action_register() and MSG_action_trace_run()
1905 The first one allows to associate a function execution to each
1906 kind of action while the second one parses a trace file and
1907 triggers the corresponding actions within the system.
1908 For now, only a toy example is provided in examples/msg/actions
1909 * Add an exemple of process migration in examples/msg/migration
1910 * Fix a bug in task exchange which broke MSG_task_get_sender()
1911 Add a teshsuite regression test for that.
1912 [Bug: if MSG_task_get_sender() is called after sender exit,
1914 * Fix a bug which prevented suspend/resume to work properly
1915 * Display the status of simulated processes when receiving SIGINT
1916 This fixes a regression of v3.3. due to the introduction of SIMIX
1917 * Bug fixing in failure management:
1918 - trace could not start by a failure at time 0
1919 - failure during communications were not working
1922 * Add SIMIX_process_set_name() to change the name of the current
1923 process in the log messages.
1924 * Store smx_hosts in a dict since we only retrieve them by name
1925 * Move the configuration infrastructure to surf
1928 * Move the configuration infrastructure to surf
1931 * Massive internal cleanups:
1932 - Store internal structures on processes instead of hosts (allows
1933 to have more than one process per host, in addition of being more
1935 - Cleanup the initialization/finalization process
1936 - Kill a whole bunch of unneeded synchronization:
1937 processes run in exclusive manner within the simulator
1938 - Move queues from global tables to process data fields
1940 - now accept -platform and -hostfile arguments
1941 - Pass the right rank value to processes according to the hostfile
1942 * Compile the examples by default, and use them as regression tests
1943 * Implement MPI_Wtime()
1944 * Change the reference speed to a command line option
1947 * TCP_gamma can now be specified as command line option using
1948 --cfg=TCP_gamma:10000000.0
1949 * Change the --surf-path cmd line option into --cfg=path:
1952 * Also include strbuff from xbt.h public header
1953 * xbt_ex_display(): do not free the exception after displaying
1954 This allows to do more with the given exception afterward.
1955 Users should call xbt_ex_free() themselves.
1959 Portability report of this version:
1960 * Main portability targets:
1961 - Linux(debian)/x86/context
1962 - Linux(debian)/x86/pthreads
1963 - Linux(debian)/amd64/context
1964 - Linux(debian)/amd64/pthreads
1965 These targets fail about 1/10 of times on gras/pmm, but we believe
1966 that this is because of the test, not because of simgrid.
1967 amok/saturate_sg fails even more rarely, and the test may not be
1970 - Mac OSX Leopard/x86/context
1971 The test suite still spits tons of errors because some obscure
1972 force prevents us from removing the temporary directories
1973 arguing that they still contain some metadata I've never heard of.
1974 Smpi fails because seq is not installed.
1975 Everything seems to work properly beside of that.
1978 - AIX version 5.3 (both contexts and pthread)
1979 Smpi still fails there because mktemp is not installed.
1980 XML inclusions seems rosty on AIX.
1982 * Windows: it's still lagging behind. If you want to help, please
1985 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
1987 SimGrid (3.3) stable; urgency=high
1991 * JAVA BINDINGS for MSG (you dreamt of them? We made them)
1992 [Malek Cherier & Mt]
1994 * Introduce the SIMIX module: factorize code between MSG and GRAS.
1997 Until now, GRAS were using MSG as an interface to SURF. It was
1998 quite difficult because both interface have several differences
1999 (MSG channels vs GRAS sockets were the most notable point).
2001 This also opens the gate to SMPI (which should occur soon) and speed
2002 up simulations by to 40% (even if it were not the main goal).
2004 **************************************
2005 *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
2006 **************************************
2007 The point is that events occuring at the exact same timestamp are
2008 not scheduled in the same order with the old and new version. This
2009 may be enough to completely change the execution of simulations in
2010 some cases. Sorry for the inconvenience.
2012 * Cleanup and upgrade the XML format to push further scalability
2013 issues (check http://hal.inria.fr/inria-00256883/ for more info)
2015 * Improve the testing infrastructure with tesh. Now a very large part of
2016 the code is tested not only by being run but also by checking that the
2017 output match an expected output [Mt].
2019 * Move on to FleXML v1.7 for the embeeded XML parsers. This version
2020 is really less memory-demanding, which should allow you to use
2021 larger files in SimGrid [AL].
2023 * Inform valgrind about our contextes, so that it becomes usable
2024 with the default (and more effecient) version of SimGrid
2025 [contributed by Sékou Diakite, many thanks]
2028 * Introduce a listener thread in charge of receiving incoming
2029 messages from the network. It allows to overlap communication and
2030 computation but most notably, it removes some stupid deadlocks due
2031 to the fact that so far, a process could not send and receive at
2032 the same time. This made most non trivial communication schema
2034 * Convert the PIDs from long int to int to match the MSG ones (and
2035 linux ones too) [Mt]
2036 * New function: gras_agent_spawn() to launch a new process on
2037 current host. Only working in simulation for now. [Mt]
2038 * New function: gras_os_hostport() returning a constant form (ie,
2039 not needing to be freed) of "gras_os_hostname():gras_os_myport()"
2042 * Make the backtrace of exceptions more human readable [Mt]
2043 * New module: xbt/str [Mt]
2044 a ton of string utility functions (split, join, printf to a newly
2045 allocated buffer, trim, etc)
2046 * New module: xbt/hash [Mt]
2047 SHA1 hashing algorithm (more to come if needed)
2048 * New module: xbt/synchro [Mt]
2049 synchronization tools (mutex and conditions) working the same way
2050 in simulation and in real life (mainly useful for GRAS, but not
2052 * New module: xbt/queue [Mt]
2053 classical producer/consumer synchronization scheme
2054 * xbt_dynar_new_sync() creates a synchronized dynar. All access
2055 (using the classical functions will get serialized) [Mt]
2056 * Make dictionary internal table dynamic. No need to specify its size
2057 anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
2059 * Make sure the log channels are organized as a tree under windows
2060 (because of ANSI C compatibility issue, any channel were child of
2061 root directly) [Mt].
2064 * Cleaned many thing in surf and fixed a few bugs [AL].
2065 * Add a nice command line configuration mechanism to compose models [AL].
2066 * Add a new model for parallel tasks (ptask_L07) that is less buggy than
2067 the previous one (KCCFLN05). It relies on something that looks like
2068 a max-min sharing mechanism but cannot be written as such. A new solver
2069 was thus designed [AL].
2070 * Add a new solver to lmm. Based on Lagrange optimization and
2071 gradient-based descent, it enables to efficiently maximise systems s.a
2073 sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
2075 This solver enables to propose two new network models for TCP Reno and
2076 TCP Vegas based on Low's work. These models still need to be fully
2077 tested though [Pedro Velho].
2080 * Bug fix in SD_simulate. Now the time bound given as argument is
2082 * Use the new parallel task model (ptask_L07) as default.
2083 * Use the SURF command line configuration mechanism.
2084 * 0-size tasks (for synchronization) should now work.
2086 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
2088 SimGrid (3.2) stable; urgency=high
2092 We still experience issues on this platform, but we believe that at
2093 least MSG is usable.
2095 GRAS API BREAKAGE (for simplification purpose, sorry):
2096 * the gras_msgtype_by_name is not used anymore. Instead of
2097 gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
2098 you can write (and must)
2099 gras_msg_send(toserver, "request", &request);
2100 - If you still want to pass a gras_msgtype_t to the function (to cache
2101 the type and avoid the lookup time), use the gras_msg_send_() variant.
2102 - Impacted functions:
2103 gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
2104 gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
2105 * The callbacks are now expected to return 0 when everything went well
2106 (just like the main() function)
2108 GRAS new features and improvements:
2109 * New module mechanism where user code can use per process globals [Mt]
2110 This is similar to gras_userdata_*() functions, but for libraries. It
2111 factorize some code developped over and over in the examples and AMOK.
2112 It has still to be documented and used (only amok/peermanagement is
2114 * Fix a vicious bug in the TCP buffering mechanism which leaded to message
2115 loss when they were small enough to fit into the buffer and sent quickly
2116 enough so that they can all get received in one shoot.
2117 * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
2118 if not found. Use the *_or_null() variant for the old semantic.
2119 * In gras_msg_handle, do not discard messages without callback.
2120 They are probably messages to be explicitly awaited later (ie, proofs of
2121 mis-synchronization in userland since they are sent before being awaited)
2122 No big deal usually.
2123 * gras_socket_meas_send/recv: semantic changed!
2124 The numerical arguments used to be (1) the total amount of data to send
2125 and (2) msg_size. This was changed to (1) msg_size and (2) amount of
2126 messages. This was need for the fool willing to send more than MAXINT
2127 bytes on quite fat pipes.
2130 * Do really rename the hostmanagement module to peermanagement. [Mt]
2131 Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
2132 but this is rather new and this was documented in the module
2133 documentation (poor excuses, I admit)
2134 * Bandwidth measurement semantic changed! This follows the changes to
2135 gras_socket_meas_send/recv explained above.
2138 * A sequential mode has been added to the workstations. When a workstation
2139 is in sequential mode, it can execute only one task, and the other tasks
2140 are waiting in a FIFO. [Christophe Thiery]
2143 * The KCCFLN05 workstation model now handles parallel tasks. It is the
2144 model for SIMDAG. [Christophe Thiery]
2145 * Bug fix in the maxmin solver: Some values were close to 0 instead of
2146 equal to 0, which caused some bad behaviors in
2147 saturated_constraint_set_update. I now use a threshold mechanism like in
2151 * When running manually src/testall, you select specific units [Mt]
2152 testall is the result of our cunit mechanism, and should replace all
2153 the scripty thingy around since bash don't run easily on billware.
2155 * A mallocator system has been added. [Christophe Thiery]
2156 Mallocators allow you to recycle your unused objects instead of freeing them
2157 and allocating new ones.
2159 Documentation update:
2160 * FAQ reworking + New FAQs:
2161 - "Valgrind spits tons of errors!" [Mt]
2162 - "How to repport bugs" [Mt]
2163 - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
2164 - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
2165 - Communication time measurement within MSG [AL]
2166 - I experience weird communication times when I change the latency [AL]
2167 * GRAS tutorial [Mt]
2169 - an introduction to the framework and to the used communication model
2170 - an initiatic tour introducing the most proheminent features:
2172 . Lesson 0: Installing GRAS
2173 . Lesson 1: Setting up your own project
2174 o Part 2: Message passing
2175 . Lesson 2: Exchanging simple messages
2176 . Lesson 3: Passing arguments to the processes (in SG)
2177 . Lesson 4: Attaching callbacks to messages
2178 . Lesson 5: Using globals in processes
2179 . Lesson 6: Logging information properly
2180 . Lesson 7: Using internal timers
2181 . Lesson 8: Handling errors through exceptions
2182 . Lesson 9: Exchanging simple data
2183 . Lesson 10: Remote Procedure Calling (RPC)
2184 . Lesson 11: Explicitely waiting for messages
2185 . Recapping of message passing features in GRAS
2186 - A HOWTO section containing:
2187 o HOWTO design a GRAS application
2188 More are due, of course. They will come latter. In the meanwhile, you can
2189 check the examples which are still here.
2191 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
2193 SimGrid (3.1) stable; urgency=high
2197 There was a stack corruption somewhere, visible only when optimizing
2198 with these versions. [Vince]
2201 * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
2202 module that enabled to play with Directed Acyclic Graphs. It is built
2203 directly on top of SURF and provides an API rather close to the old
2204 SG. Some old codes using SG are currently under rewrite to check that
2205 all needful functions are provided. [Christophe Thiery]
2208 * Complete rewrite of the KCCFLN05 workstation model. It is now an
2209 extension of the classical CLM03 model that gracefully handles
2210 failures. This is now the default model for MSG and GRAS. It doesn't
2211 handle parallel tasks yet though. [AL]
2212 * Bug fix: Weights were not correctly set in the network part.
2213 WARNING: This may have resulted in incorrect results with simulations
2214 where there are more than one flow on a given link. [AL]
2217 * After a (long ?) discussion on simgrid-devel, we have decided that the
2218 convention we had on units was stupid. That is why it has been decided
2219 to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
2220 WARNING : This means that all previous platform files will not work as
2221 such with this version! A warning is issued to ask users to update
2223 A conversion script can be found in the contrib module of the CVS, under
2224 the name contrib/platform_generation/surfxml_update.pl [MQ]
2227 * Bug fix: Processes were started in reverse order, wrt deployment file.
2228 WARNING: if your code relies on this bug, please fix it. [AL]
2229 * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
2230 being executed on two different locations. [AL]
2231 * Bug fix: Failures are now better supported thanks to Derrick's tests
2232 (there was many failure situations I hadn't thought of and that weren't
2233 correctly handled). [AL]
2234 * New function: MSG_host_is_avail indicates you whether a given m_host_t
2238 * New! a real RPC mechanism, as it ought to be since too long. [MQ]
2239 Exception occurring on server-side are propagated back to client (!).
2241 API CHANGE: the callback changed their prototype. Change:
2242 int my_handler(gras_socket_t expeditor, void *payload_data) {
2244 int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
2245 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
2247 * New! function: gras_msg_handleall to deal with all messages arriving
2248 within a given period.
2249 * New! function: gras_socket_server_range to get a server socket in a
2250 range of port numbers (ease to avoid port number conflicts) [MQ]
2251 * New! gras processes display their backtrace when they get a SIGUSR1
2252 or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
2253 Sweet to debug RL processes [MQ]
2257 - Do not force experiment sizes to be expressed in kb, or it becomes
2258 impossible to measure the latency this way (needs one byte-long tests)
2259 WARNING: this changes the amok_bw_* function semantic. [MQ]
2260 - Implements the link saturation stuff. [MQ]
2261 * Peer management module:
2262 New! module factorizing code that we wrote over and over [MQ].
2265 * New module: cunit (my jUnit implementation in ansi C) [MQ]
2266 - Test units are placed directly into the library code, they get extracted
2267 automatically and placed into the src/testall binary.
2268 - Convert most of the XBT tests to this system.
2269 * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
2270 * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
2271 live in the same C code. This required to change a little bit the API
2272 of surfxml parsing but shouldn't be an issue for end-users. [AL]
2273 * New module: sparse graph structure with basic algorithms (this is work
2274 in progress and the API is not considered to be frozen yet). [AL]
2275 * Display more information on backtraces: source line & function names are
2276 now displayed just like valgrind does (rely on addr2line tool) [MQ]
2277 * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
2278 * Reworked a little bit some #include statements to load only required
2279 headers. Some user code that relied on SimGrid to include stdlib or
2280 stdio may need to include it by themselves. [AL]
2281 * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
2283 * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
2284 meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
2285 but I guess that almost nobody used those parts. [MQ]
2287 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
2289 SimGrid (3.0.1) stable; urgency=low
2292 * Unfortunately, I had missed 5 misnamed functions:
2293 xbt_fifo_item_t xbt_fifo_newitem(void);
2294 void xbt_fifo_freeitem(xbt_fifo_item_t);
2295 xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
2296 xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
2297 xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
2298 They're now deprecated. Please use their new versions:
2299 xbt_fifo_item_t xbt_fifo_new_item(void);
2300 void xbt_fifo_free_item(xbt_fifo_item_t);
2301 xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
2302 xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
2303 xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
2305 * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
2306 * Documentation: xbt_log module unmercifully reworked [MQ]
2307 * Bugfix: there was a problem with the ending of contexts with
2308 the pthread backend. It caused some weird deadlock or behavior
2309 depending on the pthread implementation. [AL]
2310 * Bugfix: get the exceptions raised in the simulator repport where
2311 and why they come from when they are not catched in time [AL, MQ]
2314 * Bugfix: Do repport the error when two non-connected hosts try to
2315 exchange data (Thanks to Flavien for stumbling into this one) [AL]
2318 * Add additionnal checkings on communications. Assert that two
2319 communicating hosts are connected by a set of links... [AL]
2322 * Add additionnal checkings on channel values in communication [AL]
2323 * New: MSG_task_get_source to see on which host a task was generated [HC]
2324 * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
2325 the number of tasks waiting to be received on channel and sent
2327 * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
2328 waits for the first task coming from a given host.. [AL]
2330 GRAS new functionnalities: [MQ]
2331 * Enhance the parsing macro to allow the size of multidimentional objects
2332 to be given thru annotations.
2333 * New example (and documentation): Matrix Multiplication a la RPC
2334 (as when I was young!) and fix a bunch of bugs found on the way.
2336 GRAS performance improvements: [MQ]
2338 * Reduce the amount of cbps creation/destruction by making it static to
2339 datadesc_send/recv() and using a (newly created) cbps_reset (based on
2342 * Change libdata to a set so that we can search for stuff by ID (and thus
2343 reduce the insane amount of dict lookups)
2346 * Actually implement gras_datadesc_copy() so that we don't have to mimick
2347 RL communication on top of SG since it's so uneffective.
2348 It may also be used for inter-thread communication in RL, one day.
2349 * Use gras_datadesc_copy() to exchange messages on top of SG
2351 - improve message exchange performance on top of SG
2352 - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
2353 * Don't exchange on the network the size of the used part of buffer,
2354 instead, specify the possible buffer size to read().
2356 - reduces the amount of read/write calls (one pair per exchange)
2357 - reduces the amount of exchanged data (the size)
2358 - allows to retrieve all arrived data on receiver side, if we don't need
2359 it right now (subsequent read will peek the buffer)
2360 - allows the receiver to proceed with the begining of the stream before
2361 everything is arrived
2362 - make it possible to build an iov transport (using readv/writev)
2364 - take care of the data with non-stable storage (like stacked data),
2366 * If possible, TCP send uses vector I/O (when writev() is here)
2367 - Don't use it for receive since we send data sizes and data on the
2368 same stream, so we wouldn't be able to chain large amount of chunks
2369 before having to flush the stuff to read the size.
2370 * Rework the transport plugin mechanism to simplify it and reduce the
2371 amount of pointer dereferencement when searching for the right function
2374 * I guess that now, we do almost as few system calls as possible while
2375 doing as few data copy as possible.
2377 To improve it further, we could try to send all the sizes first and then
2378 all the data (to use iov on receiving size), but it's only a partial
2379 solution: when you have 2 dimensional data, the sizes of the second
2380 dimension is data of the first dimension, so you need 3 streams.
2382 I'm not sure the potential performance gains justify the coding burden.
2384 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
2386 SimGrid (3.00) stable; urgency=high
2389 * New! Give the possibility to hijack the surf parser and thus bypass
2390 MSG_create_environment and MSG_launch_application. Have a look at
2391 examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
2393 -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
2395 SimGrid (2.96) unstable; urgency=low
2400 * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
2401 This deprecates the xbt_error_t mechanisms.
2402 It modifies (simplifies) all XBT and GRAS API.
2403 MSG API keeps unchanged (exceptions raised by XBT are catched from
2404 within MSG and masked with existing error handling facilities)
2407 * New! Add a FATPIPE model. [AL]
2408 * New! Add a parallel task model. [AL]
2409 * New! Add automatically a loopback interface (in the default
2410 network model) if none was precised.
2413 * Bugfix: MSG_process_resume now works with the current running process.
2415 * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
2416 * Modification of MSG_task_get_compute_duration. Once a task has been
2417 processed, the value returned by this function is now equal to 0. [AL]
2418 * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
2419 MSG_error_t MSG_task_cancel(m_task_t task). Add a state
2420 (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
2421 of a m_task. For now, MSG_task_cancel only works with computation
2423 * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
2424 of the processor (in Mflop/s) regardless of the current load on the
2426 * API Change: use proper naming convention for MSG_getClock and
2427 MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
2429 * New! Add void MSG_task_set_priority(m_task_t task, double priority).
2430 This function changes the priority of a computation task. This priority
2431 doesn't affect the transfer rate. A priority of 2 will make a task
2432 receive two times more cpu power than the other ones. This function
2433 has been added to suit the needs of Nguyen The Loc and hasn't been that
2434 much tested yet. So if it fails, please report it and send me your code.
2436 * API Change: removed all functions and types that were marked "deprecated"
2437 since many months. Renamed MSG_global_init_args to MSG_global_init.
2439 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
2441 SimGrid (2.95) unstable; urgency=low
2444 * Steal some nice code to GNU pth to fix context detection and usage [AL]
2445 * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
2446 * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
2449 * Bugfix: Allow absolute paths for platform description files [MQ]
2450 * Bugfix: do free the variables after use. Leads to drastic performance
2452 * Implement max_duration (ie, timeouts) on resources [AL]
2455 * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
2457 * Implement MSG_channel_select_from() to help GRAS now that SURF provide
2458 the needed support (timeouts) [AL]
2461 * Implement measurement sockets. You can now get the bandwidth between two
2462 hosts thanks to AMOK (see below). [MQ]
2463 * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
2464 dynar over the network (yeah) [MQ]
2465 * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
2466 * simple/static token-ring example. [Alexandre Colucci and MQ]
2467 * Use MSG_channel_select_from() and remove the *slow* hack we had to put
2468 in place before [MQ]
2471 * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
2472 type parsing. "short" and "long" modifiers were also ignored; other
2473 modifier (such as reference level) are still ignored. [MQ]
2474 * Embeed the buffer size within the buffer itself on SG. [MQ]
2475 That way, send() are atomic and cannot get intermixed anymore (at least
2476 the ones which are less than 100k; bigger messages still have the issue)
2477 * Array size pushed by the field, not by the field type (or each
2478 and every long int will push stuff to the cbps) [MQ]
2479 * use select() to sleep since it allows to portably sleep less than one
2482 GRAS (minor cleanups)
2483 * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
2486 * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
2487 * type category 'ignored' killed as it was never used and were difficult
2489 * whether a type can cycle or not is now a flag, leaving room for more
2490 flags (as "ignored", if we feel the need one day ;)
2491 * Rename raw sockets to measurement sockets since "raw" has another
2492 meaning in networking community.
2495 * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
2496 and offers features not belonging to GRAS but that most applications
2497 need. One day, it may be a set of plugins loadable at runtime.
2498 * New module: bandwidth
2499 bandwidth measurement between arbitrary nodes running this module. [MQ]
2501 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
2503 SimGrid (2.94) unstable; urgency=low
2505 The first beta release of SimGrid 3 !
2509 * Update the main page and the FAQ. Adding references to gforge.
2512 * Add a gras_os_getpid function.
2515 * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
2516 * Extend the logs so that they also print PID, hostname, date, ... if
2518 * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
2519 and kill the old version which were in testsuite/
2520 * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
2524 * Add xbt_os_time(). As the rest of xbt/portability, this is not public
2525 for users. Instead, each programming environment (GRAS, MSG,...) use it
2526 when needed to provide such a feature to users.
2527 Don't shortcut the mechanism or you will also shortcut the virtualization
2528 you need on the simulator.
2532 * Cleanups in configury with regard to compile optimization/warning flags.
2533 Also add -fno-loop-optimize to any powerpc since it's the optimization
2534 killing gcc (< 3.4.0).
2535 * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
2536 needed by MSG examples complications
2537 * Borrow configury beautifications from PHP
2540 * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
2541 warning (thanks loris for stumbling into this one).
2542 * Bugfix: stop loading private headers (gras_config.h) from the public
2546 * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
2547 * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
2548 RL would imply a DNS resolver, which is *hard* to do in a portable way
2549 (and therefore delayed).
2550 * Implement a real timer mechanism and use it in timing macros. This allows
2551 to avoid rounding errors and get a 0.000005 sec precision in timing
2552 macros. While I was at it, various cleanups:
2553 - allow to declare more than one timed section per file (fix a stupid bug)
2554 - move some private declaration to the right place
2555 - merge conditional execution and timing macros into emulation module
2556 - document the module
2557 - make sure the module cleanups its mess on gras_exit
2558 * Documentation improvements:
2559 - (new) how to compile applications using GRAS
2560 - (new) emulation support (timing macros)
2562 -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
2564 SimGrid (2.93) unstable; urgency=low
2566 Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
2569 - Use Paje properly where used. Still to be sanitized properly.
2570 - Portability fix: Add an implementation of the contexts using pthread
2574 - Add xbt_procname(): returns the name of the current process.
2575 Use it to show the current process's name in all logging.
2577 - fix detection of older flex version and the reaction, since we do
2578 depend on modern ones (we use lex_destroy)
2579 - Better separation of SG and RL in the libs: remove all simulation code
2580 from libgras. As a result, this lib is now only 200k when stripped.
2581 Some of the xbt modules may also be duplicated (two sets and such) and
2582 should be cleaned/killed before SG3.
2583 - Insist on using xlC on AIX because of weird problems involving gcc there.
2584 - Cleanup the make remote stuff. This is now done by scripts
2585 tools/graspe-{master,slave} (GRAS Platform Expender). This is still
2586 mainly for our private use, but we're working on changing them to user
2589 - Bugfix: flush the socket on close only if there is some *output*.
2590 - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
2592 - Add MSG_task_get_name. The task names are mainly for debugging purpose,
2595 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
2597 SimGrid (2.92) unstable; urgency=low
2599 Alpha 3 on the path to SimGrid 3
2603 - New! First try of benchmarking macros.
2604 - New! First try so that gras_stub_generator generate deployment and
2605 remote compilation helpers.
2607 - Bugfix: Initialization fix in msg_test.
2611 - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
2613 - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
2615 - API Change: gras_os_sleep to take the amount of seconds as a double.
2616 Accepting an int was error prone since it was the only location where
2617 seconds were coded as such. It leaded to damn rounding errors.
2618 - Bugfix: Hard to belive that timers ever worked before this.
2620 -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
2622 SimGrid (2.91) unstable; urgency=low
2624 Alpha 2 on the path to SimGrid 3
2628 - Bug fix in the lmm_solver.
2630 - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
2631 through the function MSG_paje_output.
2632 - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
2633 - It is possible to bound the rate of a communication in MSG with
2634 MSG_task_put_bounded() (was already in the previous version but I had forgotten
2635 to write it in the changelog).
2636 - Bug fix to let GRAS run on top of MSG until we move it directly on top
2641 - Various cleanups to the autotools stuff
2642 - Begin to move Gras examples to examples/gras/
2643 - Let make distcheck work again (yeah!)
2645 - documentation overhauled using doxygen.
2646 gtk-doc-tools is dead in SimGrid now.
2647 - Automatically extract all existing logging categories, and add the list
2648 to the documentation (long standing one, to say the less)
2650 - Cleanup the known architecture table. Reorder the entries to group what
2651 should be, and use a more consistent naming scheme.
2652 (some of the test dataset are still to be regenerated)
2653 - New! Allow library to register globals on each process just as userdata
2655 This is implemented using a xbt_dict and not a xbt_set, so we loose the
2656 lookup time (for now).
2657 Use it in msg and trp.
2658 This cleans a lot the internals and helps enforcing privacy of the
2659 headers between the gras components.
2660 - New! Add a timer mechanism, not unlike cron(8) and at(1).
2661 - Bugfix: gras_os_time was delirious in RL.
2662 - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
2664 - Reenable GRAS now that it works.
2666 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
2668 SimGrid (2.90) unstable; urgency=low
2670 Alpha 1 on the path to SimGrid 3
2672 * It is a long time since the last release of SimGrid. I'm sorry about
2673 that but as I had told you, I was rewriting a lot of things. I apologize
2674 to those who had been reporting bugs to me and that I had not answered.
2675 If your bug is still in the new version, please tell me. Here is a
2676 summary of the main changes.
2678 * REVOLUTION 1: The SimGrid project has merged with the GRAS project
2679 lead by Martin Quinson. As a consequence SimGrid gains a lot in
2680 portability, speed, and a lot more but you'll figure it out later.
2681 SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
2682 I wanted to release the new MSG as soon as possible and I have
2683 broken GRAS, which is the reason why, for now, only MSG is fully
2684 functional. A laconic description of these projects is available
2685 in the documentation.
2687 * REVOLUTION 2: I have removed SG and I am now using a new simulation
2688 kernel optimized for our needs (called SURF but only the developers
2689 should use it). Hence, MSG is now roughly 30 times faster and I think
2690 that by rewriting a little bit MSG, I could event speed it up a little
2691 bit more. Beside the gain in speed, it is also much easier to encode a
2692 new platform model with SURF than it was with SG. More to come...
2694 * REVOLUTION 3: I have tried to change a little as possible the API of
2695 MSG but a few things really had to disappear. The main differences
2696 with the previous version are :
2697 1) no more m_links_t and the corresponding functions. Platforms are
2698 directly read from a XML description and cannot be hard-coded
2699 anymore. The same format is used for application deployment
2700 description. The new format is described in the documentation.
2701 Have a look in tools/platform_generation. There is a tiny script
2702 that converts from the old platform format to the new one. Concerning
2703 the application deployment format, parsing the old one is tricky.
2704 I think most of you should however be able to convert your files. If
2705 it is really an issue, I can write a C code that does the conversion.
2707 2) the toolbox tbx does not exist anymore. We now have a library
2708 with much more data-structures but without the hash-tables (we have
2709 dictionaries that are much faster).
2711 -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
2713 *****************************************************************************
2714 * Follows the old GRAS changelog. It does not follow the same syntax, but I *
2715 * don't feel like converting the oldies. (Mt) *
2716 *****************************************************************************
2719 Version 2.90: "the long awaited one"
2720 - Finished rewriting and debugging MSG. Rewrote the documentation.
2721 - disable GRAS for now since it needs to be ported to the newest SG
2724 - Finish the port to windows (using mingw32 for cross-compile)
2727 - Main loop and datastructures of SURF. A cpu resource object is
2728 functional. Surf can thus be used to create cpu's with variable
2729 performance on which you can execute some actions.
2731 2004-11-15 Martin Quinson
2732 - Port to ARM. Simply added the alignment and size descriptions. Should
2733 work, but the ARM machines are so slow that I didn't had the opportunity
2734 to 'make check' over there yet.
2736 2004-11-15 Arnaud Legrand
2737 - Trace manager now written. It uses a heap structure and is therefore
2738 expected to be efficient. It may however be speeded up (particularly
2739 when many events occur at the same date) by using red and black
2740 trees. One day maybe...
2741 - Max-min linear system solver written. It uses a sparse matrix
2742 structure taking advantage of its expected use. Most operations are
2743 O(1) and free/calloc are called as few as possible. The computation of
2744 the minimum could however be improved by using a red and black tree
2747 2004-11-03 Arnaud Legrand
2748 - Rename every gras_* function that was in xbt/ to its xbt_
2750 - Add a heap and a doubly-linked list to xbt
2751 - Added a dichotomy to the dictionaries. make check works as well before
2752 so I assume that the patch is correct. I do not know however if things
2753 run effectively faster than before now. :)
2755 Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
2756 SimGrid, and the version number is bumped to 2.x
2758 2004-10-29 Martin Quinson
2759 - Introduction of the remote errors.
2760 They are the result of a RMI/RPC on the remote machine.
2761 ErrCodes being scalar values, you can't get the host on which those
2762 errors did happen. Extending the error mechanism as in Gnome is possible.
2763 No idea yet whether it is a good idea.
2765 2004-10-28 Martin Quinson
2766 - Interface revolution: the Starred Structure Eradication.
2767 I used to do typedef struct {} toto_t; and then handle *toto_t.
2768 Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
2769 - ???_t is a valid type (builded with typedef)
2770 - s_toto_t is a structure (access to fields with .)
2771 - s_toto is a structure needing 'struct' keyword to be used
2772 - e_toto_t is an enum
2773 - toto_t is an 'object' (struct*)
2775 typedef struct s_toto {} s_toto_t, *toto_t;
2776 typedef enum {} e_toto_t;
2777 Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
2778 s_toto_t) is private.
2780 - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
2781 so that it can set the variable to NULL. It was so for dicts and sets,
2782 it changed for dynars.
2784 - Fix a bunch of memleaks in dict_remove
2785 - Fix a bug in sg/server_socket opening: it failed all the time.
2787 2004-10-07 Martin Quinson
2788 - Speed up dynar lookup operation a bit.
2790 gras_dynar_get is dead.
2792 Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
2793 but should be avoided for efficiency reasons) and gras_dynar_get_ptr
2794 (which gives you the address of the stored data).
2796 gras_dynar_get_as is an helpful macro which allows you to retrieve a
2797 copy of the data using an affectation to do the job and not a memcpy.
2799 int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
2800 int toto = *(int*)gras_dynar_get_ptr(dyn,0);
2802 It does not really speedup the dynar test because they are
2803 setting elements all the time (and look them seldom). But the dict does
2804 far more lookup than setting.
2806 So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
2808 2004-10-05 Martin Quinson
2809 - Allow to (en/dis)able the cycle detection at run time.
2811 Whether we should check for cycle or not is now a property of each
2812 datatype. When you think there may be some cycle, use datadesc_cycle_set.
2813 datadesc_cycle_unset allow to remove this property when previously set.
2815 Note that the cycle detection is off by default since it impacts the
2816 performance. Watch the data you feed GRAS with ;)
2818 This property is hereditary. Any element embedded in a structure having it
2819 set have it set for the time of this data exchange.
2821 You should set it both on sender and receiver side. If you don't set it on
2822 sender side, it will enter an endless loop. If you forget on receiver
2823 side, the cycles won't be recreated after communication.
2825 - Header reorganization.
2826 Kill gras_private.h, each submodule must load the headers it needs.
2828 2004-10-04 Martin Quinson
2829 - Interface revolution: do not try to survive to malloc failure.
2831 Now, gras_malloc and friends call gras_abort() on failure.
2832 As a conclusion, malloc_error is not a valid error anymore, and all
2833 functions for which it was the only gras_error_t return value are
2834 changed. They now return void, or there result directly.
2835 This simplify the API a lot.
2837 2004-09-29 Martin Quinson
2838 - Re-enable raw sockets.
2839 Created by gras_socket_{client,server}_ext;
2840 Used with gras_raw_{send,recv}
2843 It should allow to kill the last bits of gras first version soon.
2845 This is not completely satisfactory yet (duplicate code with
2846 chunk_{send,recv}; a bit out of the plugin mechanism), but it should
2849 - Simplify transport plugin (internal) interface by not passing any
2850 argument to _server and _client, but embedding them in the socket
2853 2004-09-28 Martin Quinson
2854 - Finish the port to AIX.
2855 autoconf was my problem (segfault within the malloc replacement
2856 function. No idea why)
2858 2004-09-16 Martin Quinson
2859 - Fix some size_t madness on 64bit architectures.
2861 2004-09-08 Martin Quinson
2862 - Reduce the number of system headers loaded, overload some more system
2863 calls (such as malloc to cast the result of the system one, and work
2865 - Fix and reintroduce the config support
2867 2004-09-07 Martin Quinson
2868 - Source code reorganization to allow Arnaud to surf all over there.
2869 - Allow to document the logging categories.
2870 - Remove all uppercase from logging categories and useless cleanup in names.
2872 2004-08-18 Martin Quinson
2873 Version 0.6.2 (protocol not changed; API changed)
2874 - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
2875 gras_error_t), and NULL when not found. Functions expecting a msgtype
2876 as argument (msg_wait; msg_send) deal with NULL argument by providing a
2877 hopefully usefull message.
2878 - Portability to prehistoric sparcs again
2880 2004-08-17 Martin Quinson
2881 Version 0.6.1 (protocol not changed; ABI not changed)
2882 - prealloc some buffers to speed things up
2884 2004-08-11 Martin Quinson
2885 Version 0.6 (protocol not changed; ABI expended)
2886 - The parsing macro can deal with the references, provided that you add
2887 the relevant annotations (using GRAS_ANNOTE(size,field_name))
2889 2004-08-09 Martin Quinson
2890 Version 0.5 (protocol not changed; ABI changed)
2891 - Allow to off turn the cycle detection code in data exchange at
2892 compilation time. It should be at run time, but I'm short of time (and
2893 the config stuff is still broken). That way, we keep dict out of the
2894 critical path, which is good because the performance is poor:
2895 - search not dichotomial yet
2896 - dynar give no way to access their content and memcpy everytime
2897 - In composed data description (struct, ref and so on), stop foolness of
2898 keeping the subtype's ID, but store the type itself. This keeps sets out
2899 of the critical path, which is good since they rely on dynar and
2900 dictionnaries. The only loose of that is that we cannot detect the
2901 redeclaration of a structure/union with another content (but I'm not sure
2902 the code detected well this error before anyway). We still can detect
2903 the redefinition discrepancy for the other types.
2904 - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
2905 it breaks the code because of type-punning used all over the place).
2906 This breaks on all non-gcc architectures (for now).
2908 All those changes (plus the buffer of last time) allow me to gain 2 order
2909 of magnitude on cruel tests consisting of 800000 array of integers on two
2910 level of a hierarchical structure (200 secondes -> 4 secondes)
2913 - the selector of reference must now return the type it points to, not
2914 the ID of this type.
2916 2004-08-06 Martin Quinson
2917 Version 0.4 (protocol changed; ABI not changed)
2918 - Allow to pass --gras-log argument to processes in simulation mode. Really.
2919 - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
2920 - Implement a buffer transport, and use it by default (it relies on tcp in
2921 real life and on sg in simulation).
2922 That's a bit hackish since I had a new field to the structure to store
2923 its data without interfering with the subtype ones. Inheritance
2924 is tricky in C. And that's a kind of reverse inheritance with one class
2925 derivating two classes. Or maybe a game with java interfaces. Anyway,
2926 that's damn hard in C (at least).
2927 Moreover, I got tired while trying to ensure plugin separation and
2928 genericity in SG mode. MSG wants me to do weird things, so let's go for
2929 cruel hacks (temporarily of course ;).
2930 See comment in transport_private.h:71
2931 - do not include all the _interface headers in private but in the files
2932 which really need them (to cut the compilation time when they are
2935 2004-07-26 Martin Quinson
2936 Version 0.3 (protocol not changed; ABI changed)
2937 - Major overhault of the datadesc interface to simplify it:
2938 - shorted the function names:
2939 s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
2940 - add a trivial way to push/pop integers into the cbps without malloc.
2941 This allows to make really generic sub_type description, which simply
2942 pop their size of the stack.
2943 - add a function gras_datadesc_ref_pop_arr() which does what users want
2944 most of the time: Declare a dynamic array (which pops its size of the
2945 stack) and declare a reference to it. Poor name, but anyway.
2946 - kill the post-send callback, add a post-receive one
2948 2004-07-23 Martin Quinson
2949 Version 0.2 (protocol changed; ABI changed)
2950 - add some testing for cpbs in the test cases, and fix some more bugs.
2951 This invalidate again the little64 data file, since I cannot regenerate
2953 - remove an awfull optimization in the logging stuff, allowing me to:
2954 - understand it again
2955 - learn gcc how to check that the argument match the provided format
2956 - fix all errors revealed by gcc after that
2957 - internal keys of dict are not \0 terminated. Deal with it properly in
2958 loggings instead of segfaulting when the user want to see the logs :-/
2960 2004-07-22 Martin Quinson
2961 - Fix some stupid bug preventing cbps (callback postit) from working
2963 2004-07-21 Martin Quinson
2964 - Some documentation cleanups
2965 - remove the useless last argument of msgtype_declare
2966 - rename the Virtu functions to fit into the 'os' namespace
2967 - move headers src/include -> src/include/gras/ and stop fooling with
2968 gras -> . symbolic link
2969 - make distcheck is now successful
2971 2004-07-19 Martin Quinson
2973 - Build shared library also
2974 - Install html doc to the right location
2975 - stop removing maintainer files in make clean
2976 - build tests only on make check
2978 2004-07-13 Martin Quinson
2980 - No major issue in previous version => change versioning schema
2981 - Re-enable little64 convertion test now that Abdou kindly regenerated the
2982 corresponding dataset.
2984 2004-07-11 Martin Quinson
2986 - Get it working with any kind of structure (we can compute the padding
2987 bytes remotely for all the architectures I have access to)
2988 - Implement the structure parsing macro (still not quite robust/complete)
2989 - Improvement to the remote testing toysuite
2991 2004-07-10 Martin Quinson
2992 [autoconf mechanism]
2993 - get ride of a bunch of deprecated macros
2994 - actually run the test for two-compliment, not only compile it :-/
2995 - test whether the structures get packed (and bail out if yes. Damn.
2996 Alignment is a serious matter)
2997 - test whether the structures get compacted (but respecting the alignment
2998 constraints of each types)
2999 - test whether the array fields of structures can straddle alignment boundaries
3001 - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
3002 (took me 2 hours to find that bug, looking at the wrong place)
3003 - Add gras_datadesc_declare_{union,struct}_close(). They must be used
3004 before sending/receiving and are used to compute the offsets of fields
3005 - Given that padding size depend even on compiler options, keep track of
3006 alignment and aligned_size only for the current architecture. Not a big
3007 deal since we send structure fields one after the other (seems
3009 - Add the datastructure used for IEEE paper by the PBIO guys to the test
3010 program, let it work on linux/gcc/little32. portability todo.
3012 2004-07-08 Martin Quinson
3013 - import and improve remote compilation support from FAST
3014 - make sure make check works on half a dozen of machines out there
3016 2004-07-07 Martin Quinson
3017 Let's say it's version 0.0.3 ;)
3018 - Implement conversions (yuhu!)
3019 - Let it work on solaris (beside conversion, of course)
3020 - Stupid me, using rand() to generate the conversion datatests in not wise.
3022 2004-07-06 Martin Quinson
3023 - Let make dist work, since I'm gonna need it to compile on remote hosts
3024 - Let Tests/datadesc_usage write the architecture on which the file was
3025 generated as first byte.
3026 - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
3027 architecture descriptions.
3028 - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
3029 on those architectures.
3030 - Optimization: send/recv array of scalar in one shoot
3032 2004-07-05 Martin Quinson
3033 - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
3035 - Plug a whole bunch of memleaks
3036 - each process now have to call gras_{init,exit}. One day, their log
3037 settings will be separated
3038 - Continue the code factorisation between SG, RL and common in Transport.
3040 2004-07-04 Martin Quinson
3042 - Redistribution between SG and RL.
3043 We wanna have to accept in SG, so move accepted related parts of RL in
3044 the common part. (more precisely, the dynar of all known sockets is no
3045 more a static in transport.c, but part of the process_data)
3047 [gras_stub_generator]
3048 - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
3050 2004-07-03 Martin Quinson
3051 - Create a new log channel tbx containing dict, set, log, dynar (to shut
3052 them all up in one shot)
3054 - Fix the ugly case of reference to dynamic array.
3055 - New (semi-public) function gras_datadesc_size to allow the messaging
3056 layer to malloc the needed space for the buffer.
3058 - gras_socket_close now expect the socket to close (and not its address to
3059 put NULL in it after it). This is because the socket passed to handlers
3060 is one of their argument (=> not writable).
3062 - propagate the interface cleanup from last week in datadesc, ie remove a
3063 superfluous level of indirection. User pass adress of variable
3064 containing data (both when sending and receiving), and not of a variable
3065 being a pointer to the data. Let's say that I like it better ;)
3066 The price for that is constructs like "int msg=*(int*)payload" in
3067 handlers, but it's a fine price, IMHO.
3069 - Let it work in RL (yuhu)
3071 2004-06-21 Martin Quinson
3073 - porting SG plugin and SG select to new standards (works almost).
3074 - plug memleaks and fix bugs around.
3077 - cleanup the prototype of data recv and force users to specify when they
3078 want to handle references to objects. Test case working even for cycles.
3079 - plug memleaks. Valgrind is perfectly ok with this.
3081 2004-06-12 Martin Quinson
3083 - cleanup the separation between plugin and main code in plugin creation
3085 2004-06-11 Martin Quinson
3087 - Reput hook for raw sockets, needed for BW experiments
3088 - kill a few lines of dead code
3089 [Data description] Interface cleanup
3090 - gras_datadesc_by_name returns the searched type or NULL.
3091 That way, no variable is needed to use a type desc once, which makes
3093 - gras_datadesc_declare_[struct|union]_append_name is removed. The last
3094 two parameters were strings (field name, type name), leading to
3096 [Dicos] Interface cleanup
3097 - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
3098 This is consistant with the dynar API.
3100 2004-04-21 Martin Quinson
3102 - Porting to new standards.
3104 - interface cleanup.
3105 There is no bag anymore, no need to take extra provision to mask the
3106 pointers behind "ID".
3107 Better splitup of functions between files create/exchange/convert.
3108 This is still a bit artificial since convert and receive are so
3109 interleaved, but anyway.
3111 - add a queued message list to procdata (the ones not matching criteria
3113 - factorize some more code between SG and RL wrt procdata
3115 - use gras_exit in example to track memleaks
3116 - get rid of gs_example now that GS is properly integrated into gras
3117 - update run_test to integrate the latest tests (datadesc)
3119 - rename WARNINGn macros to WARNn since it prooved error-prone
3121 2004-04-19 Martin Quinson
3123 - register init/exit functions within gras module mechanism
3124 - send/receive function.
3125 Convertion is not implemented, but short-cutted if not needed.
3126 struct/array elements are sent one by one (instead of block-wise), but
3127 nobody really cares (yet). Get a prototype before optimizing.
3128 - tests (using a file socket) for DD send/receive on:
3129 - base types: int, float
3130 - array: fixed size, string (ie ref to dynamic string)
3131 - structure: homogeneous, heterogeneous
3132 - chained list, graph with cycle
3133 Believe it or not, valgrind is not too unhappy with the results. The
3134 cycle happily segfaults, but the others are ok. And I'm sick of pointers
3138 - Bugfix when using a filename explicitely (instead of '-')
3140 2004-04-09 Martin Quinson
3142 - factorize more code between RL and SG in socket creation
3143 - Complete the implementation and tests of:
3145 o file (only in RL, and mainly for debugging)
3147 I lost 3 days to design a portable address resolver, and then decided
3148 that the prototype mainly have to run on my box.
3149 Addressing portability too early may be like optimizing too early :-/
3151 - use gras_init in the Tests instead of the crappy parse_log_opt
3152 (the latter function is removed)
3153 [Conditional execution]
3154 - New functions: gras_if_RL/gras_if_SG (basic support for this)
3155 [Code reorganisation]
3156 - Get rid of libgrasutils.a since it makes more trouble than it solves.
3157 Build examples against the RL library, since there is no way to disable
3158 its creation for now.
3160 For information, the beginning of coding on GRAS was back in june
3161 2003. I guess that every line has been rewritten at least twice since