X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/4703f3b61b5b80fc392e35c833e82b202c5c04d3..8c8b9738cccd1563c0ea30e2ef2a370338ae8bbb:/ChangeLog diff --git a/ChangeLog b/ChangeLog index 3998feb6e6..4b11676c9f 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,38 +1,102 @@ SimGrid (3.8) NOT RELEASED; urgency=low - The "SimGrid makes psssshiiiit and jumps into the cloud" release. - - CMAKE: - * Remove option custom_flags. Now use environment variables CFLAGS - and LDFLAGS. - * Enable tracing by default. This modules rocks you should use it. + The Psssshiiiit release: SimGrid jumps into the Cloud. MSG: * Add an experimental interface to manipulate VMs. They are mainly process groups with very few intrinsic semantic, but they should allow you to build the semantic you want easily. * New function: MSG_host_set_property_value() + * New function: MSG_process_on_exit(). To clean memory in all cases. + * Bug fixes that made the host (and link) failures unusable. + * Add a way to auto-restart process when the host in which they are + executing comes back (ON_FAILURE="RESTART" on deployment file, + MSG_process_auto_restart_set). + * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_), + please stop using the old ones, they are DEPRECATED. + + * Deprecate functions MSG_global_init() / MSG_global_init_args() + Please use MSG_init() instead. (reducing the amount of entry + points in the library helps us). + * Make it impossible to link against the wrong version of the lib + * Deprecate MSG_clean(). No need to call it anymore. + * Function MSG_get_host_number() is not deprecated anymore. + + Documentation: + * Split the doc into a user guide and a reference guide. + * Start a developper guide to help people hacking on SimGrid. + + Cmake: + * Enable tracing by default. This modules rocks you should use it. + * Remove option custom_flags. Now use environment variables CFLAGS + and LDFLAGS. + * Use default cmake things to detect lua instead of home grown ones. + * New option "enable_mallocators" to disable mallocators, for debugging + purpose ("on" by default). Simix: * Bug fixes around the resource failures: don't let the processes - survive the host they are running onto + survive the host they are running onto. + * Add an interface to auto-restart processes when the host in which they are + executing comes back. + * Ensures that SIMIX_clean is called automatically. It's not part of + the public interface anymore (bindings should be updated). SimDag: - * New type of typed tasks SD_TASK_COMP_PAR_AMDAHL that represents a + * Bug fix for when SD_Simulate is called with a positive value: be careful + when comparing doubles. Sometimes they are different for non significant + digits only. + * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a parallel task whose initial work is distributed among host according to the Amdahl's law. Such tasks are created with a parameter alpha that corresponds to the non-parallelizable part of the computation. - - Before calling SD_task_schedulel or SD_task_schedulev, the - SD_task_distribute_comp_amdahl function has to be called with the - desired number of workstations. The filling of computation_amount and - communication_amount (actually empty) structures is then done - seamlessly. + SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution + between two sets of workstations assuming a 1D block distribution (each + workstation owns a similar share of data) on both sides. + + These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev. + Data redistribution will be automatically scheduled once parent and child + are both scheduled. The filling of computation_amount and + communication_amount structures is now done seamlessly thanks to the chosen + assumptions. * New function SD_workstation_dump to display various information + * New function SD_task_set_rate to throttle the bandwidth allowed to be used + by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal + bandwidth on the route onto which the task is scheduled and the amount of + data to transfer. + To divide the nominal bandwidth by 2, the rate then has to be : + rate = bandwidth/(2*amount) + * Compute tasks that have failed can now be rescheduled and executed again + (from their beginning) + * Increasing source code coverage (src/simdag is now covered at 95.8% + on average) + + SMPI: + * Re-implement time-independent trace replay using SMPI (at the + smpi_smp_* level) instead of MSG. This should replace + examples/msg/actions/actions.c + * Implement support of MPI Datatypes (vectors, hvectors, indexed, + hindexed and structs) + * Implement the exchange of non-contiguous data. + [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys. + * Correct behavior of smpi/sender_gap and set its default value to 0 + * Add option to asynchronously send small messages to allow better + simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value + specifies the size in bytes under which messages will be asynchronously sent. + * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions + * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388] + + + SimGrid: + * Export a sg_cmdline dynar containing all the arguments we got from + the command line. XBT: * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public, - and renamed to xbt_str_hash() and xbt_str_ext()._ + and renamed to xbt_str_hash() and xbt_str_hash_ext(). + * New function: xbt_os_timer_resume() to restart a timer w/o resetting it. + * Greatly improve the robustness of mmalloc to user errors (such as + using an area after freeing it, or freeing it twice) -- $date Da SimGrid team @@ -180,7 +244,7 @@ SimGrid (3.7) stable; urgency=low - Add new runtime parameters --help-logs and --help-log-categories to display informations about supported logging parameters and categories. - - Old deprecated parameters --{gras,surf,msg.simix,xbt}-log=... + - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=... don't exists anymore. * Mallocators: allow value NULL for the reset function. * Dicts: