- Change --cfg=tracing/msg/vm to --cfg=tracing/vm as virtual machine
behavior tracing is no longer limited to MSG
+MSG
+ - The deprecation of MSG is ongoing. A lot of functions are now simple
+ wrappers on the C API of S4U. All these wrappers (and their S4U counterparts
+ can be found in src/msg/msg_legacy.cpp).
+
S4U:
- Introduced new function simgrid::s4u::Host::get_actor_count. This function
returns the number of actors running on a specific host.
- Improve performance when handling timeouts of simix synchros.
SMPI:
+ - SMPI is now tested with ~45 proxy apps from various sources, with none or
+ only minor patching needed : check github.com/simgrid/SMPI-proxy-apps
- Replay: The replay file has been re-written in C++.
- Replay: Tags used for messages sent via MPI_Send / MPI_Recv are now
supported. They are stored in the trace and used when replayed.
+ - Basic support of MPI_Cancel. Robustness not guaranteed.
+ - Support of MPI_Win_allocate_shared, MPI_Win_shared_query, MPI_Comm_split_type
+ (only for MPI_COMM_TYPE_SHARED).
+ - New option : smpi/privatize-libs, to add external shared libs to be privatized
+ by SMPI. They will be copied locally and loaded separately by each process.
+ Example --cfg=smpi/privatize-libs:"libgfortran.so.3;libscalapack.so".
+ - Tracing : add tracing for MPI_Start, Startall, Testall, Testany
+ - Interception of getopt, getopt_long and getopt_long_only calls to avoid issues
+ with internal index optind with multiple processes. Only works if MPI_Init has
+ already been called.
+ - Fortran : SMPI builds a mpi.mod file which should allow use of "use mpi"
+ syntax without preprocessing tricks.
XBT:
- Config: the C API is now deprecated (will be removed in 3.23), and
- #258: daemonized actors hang after all non-daemonized actors have completed
- #267: Linker error on unit_tmgr
- #269: SMPI : tracing of MPI_Wait/all/any broken
+ - SMPI : Fix various crashes with combined use of MPI_PROC_NULL and MPI_IGNORE_STATUS
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