PetscPartitionerMultistageSetStages#

Sets stages for the partitioning

Synopsis#

#include "petscpartitioner.h" 
PetscErrorCode PetscPartitionerMultistageSetStages(PetscPartitioner part, PetscInt levels, MPI_Group lgroup[])

Collective

Input Parameters#

part - the PetscPartitioner object.
levels - the number of stages.
lgroup - array of MPI_Groups for each stage.

Notes#

MPI_Comm_create(comm, lgroup[l], &lcomm) is used to compute the communicator for the stage partitioner at level l. The groups must be specified in the process numbering of the partitioner communicator. lgroup[0] must be collectively specified and it must represent a proper subset of the communicator associated with the original partitioner. For each level, ranks can be listed in one group only (but they can be listed on different levels)

Level#

advanced

Location#

src/dm/partitioner/impls/multistage/mspart.c

Index of all MatGraphOperations routines
Table of Contents for all manual pages
Index of all manual pages