MPI standard states a user MPI_Op and/or user MPI_Datatype can be free'd
after a call to a non blocking collective and before the non-blocking
collective completes.
Retain user (only) MPI_Op and MPI_Datatype when the non blocking call is
invoked, and set a request callback so they are free'd when the MPI_Request
completes.
Thanks Thomas Ponweiser for reporting this
Fixesopen-mpi/ompi#2151Fixesopen-mpi/ompi#1304
Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>
move openmpi/ompi/mpiext/FOO/c/mpiext_FOO_c.h to
openmpi/ompi/mpiext/FOO_c.h in order to use consistent
paths with mpif.h extensions
Refs. open-mpi/ompi#6019
Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>