SimGrid (3.12) NOT RELEASED; urgency=low
- (to complete)
+ cMSG:
+ * Interface improvement:
+ - Rename MSG_host_is_avail(h) to MSG_host_is_on(h)
+ jMSG:
+ * Interface improvement:
+ - Rename Host.isAvail() to Host.isOn()
+
+ SIMIX:
+ * New functions
+ - SIMIX_process_throw: raises an exception in a remote process
+ * Refactoring: Separate submodules
+ - libsmx: the public interface, as libc in a real system
+ - popping: the strange dance that converts a user request into a kernel handling
+ - smx_context_*: the virtualization mechanisms that embeed the user code
+ - smx_*: the handling of each simcalls
+ * Rename smx_action_t into smx_synchro_t, making explicit that these
+ things are used to synchronize processes with their environment.
+ For example, a communication is a sort of synchronization involving
+ the communicating processes (that may block until the exchange) and
+ the platform. The same can be said from computations, etc.
+
+ SMPI:
+ * New functions
+ - 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.
+ - MPI_Keyval*, MPI_Attr* functions, as well as MPI_Comm_attr*, MPI_Type_attr* variants (C only, no Fortran support yet)
+ - MPI_Type_set_name, MPI_Type_get_name
+ - MPI_*_c2f and MPI_*_f2c functions
+ - MPI_Info_* functions (beware, get_nthkey may not follow the insertion order)
+ - MPI_Pack, MPI_Unpack and MPI_Pack_size functions
+ - Activate a lot of new tests from the mpich 3 testsuite
+ * Features
+ - Constant times can be injected inside MPI_Wtime and MPI_Test through options smpi/wtime and smpi/test
+ - InfiniBand network model added : Based on the works of Jerome Vienne (http://mescal.imag.fr/membres/jean-marc.vincent/index.html/PhD/Vienne.pdf )
+ - When smpi/display_timing is set, also display global simulation time and application times
+ * Collective communications
+ - 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
+ - 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/).
+ - Support for Rabenseifner Reduce/Allreduce algorithms (https://fs.hlrs.de/projects/par/mpi//myreduce.html)
+ * Replay
+ - Replay now uses algorithms from wanted collective selector
+ - Replay can be used with SMP-aware algorithms
+ - Memory occupation of replay should now be contained (temporary buffers allocated in collective algorithms should be shared between processes)
+ - 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.
+ * Bug fixes
+ - [#17799] : have mpi_group_range_incl and mpi_group_range_excl better test some corner cases
+ - Correctly use loopback on fat-tree clusters
+ - Asynchronous small messages shouldn't trigger deadlocks anymore
+ SURF
+ * Bug fixes
+ - "Full" network optimization flag was broken since Surf++
+ - Better handling of precision flags in maxmin
+ - Fix bug causing sometimes "Impossible" errors
+ XBT
+ * New functions
+ - Add a xbt_heap_update function, to avoid costly xbt_heap_remove+xbt_heap_insert use
+ - Add a xbt wrapper for simcall_mutex_trylock (asked in [#17878])
+
-- $date Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
