2 Commits

Author	SHA1	Message	Date
Mark Olesen	34143b433a	ENH: allow disabling of initial MPI_Comm_dup(MPI_COMM_WORLD,...) ... - can use -mpi-no-comm-dup to suppress the initial communicator duplication (to avoid potential deadlock with coupled processes). This is partly related to comments in merge-request !735 ENH: simplify parsing/removal of local -world option - can extract the world name in a single pass and also makes the parsing robuster. ENH: support regular MPI_Comm_split() - the two-step method of Allgather + Comm_create_group may not be expected by other applications (issue #3127) and that can lead to deadlock, so also add in code for the regular MPI_Comm_split. Does not support re-sorting keys! FIX: faulty logic for splitting communicators - only affected more recent develop branch	2025-04-30 12:38:45 +02:00
Mark Olesen	b69db76b67	ENH: bundle together freed/outstanding MPI request handling ... - improve communicator wrapping - avoid indexing errors when using partial subranks - UPstream::is_subrank (for testing partial subranks)	2022-12-09 10:59:32 +01:00