| d5a8f7e6 | 26-Dec-2020 |
Barry Smith <bsmith@mcs.anl.gov> |
Fix pcmgsetlevels() for Fortran to properly convert the C MPI communictors to Fortran
Fix PCMGSetLevels_MG() to support the use of MPI_COMM_NULL for communicators that that live on a subset of the o
Fix pcmgsetlevels() for Fortran to properly convert the C MPI communictors to Fortran
Fix PCMGSetLevels_MG() to support the use of MPI_COMM_NULL for communicators that that live on a subset of the orginal communicator.
Add additional documentation material to PCMGSetLevels() explaining how one must handle the restriction and interpolation operations that move between different levels which have a different number of MPI ranks.
Commit-type: bug-fix, docs /spend 2h Reported-by: Shatrov Oleg <shatrov.oleg.a@gmail.com>
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