petsc-master 2019-12-10
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MatPartitioningImprove

Improves the quality of a given partition.

Synopsis

#include "petscmat.h" 
PetscErrorCode  MatPartitioningImprove(MatPartitioning matp,IS *partitioning)
Collective on Mat

Input Parameters

matp - the matrix partitioning object
partitioning - the partitioning. For each local node this tells the processor number that that node is assigned to.

Output Parameters

partitioning -the partitioning. For each local node this tells the processor number that that node is assigned to.

Options Database Keys

To improve the quality of the partition
   -mat_partitioning_improve

See Also

MatPartitioningApply(), MatPartitioningCreate(),
MatPartitioningDestroy(), MatPartitioningSetAdjacency(), ISPartitioningToNumbering(), ISPartitioningCount()

Level

beginner

Location

src/mat/partition/partition.c

Implementations

MatPartitioningImprove_Hierarchical in src/mat/partition/impls/hierarchical/hierarchical.c
MatPartitioningImprove_Parmetis in src/mat/partition/impls/pmetis/pmetis.c

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