MatPartitioningApply#

Gets a partitioning for the graph represented by a sparse matrix.

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatPartitioningApply(MatPartitioning matp, IS *partitioning)

Collective

Input Parameter#

matp - the matrix partitioning object

Output Parameter#

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

Options Database Keys#

-mat_partitioning_type - set the partitioning package or algorithm to use
-mat_partitioning_view - display information about the partitioning object

The user can define additional partitionings; see MatPartitioningRegister().

See Also#

Matrices, Mat, MatPartitioning, MatPartitioningType, MatPartitioningRegister(), MatPartitioningCreate(), MatPartitioningDestroy(), MatPartitioningSetAdjacency(), ISPartitioningToNumbering(), ISPartitioningCount()

Level#

beginner

Location#

src/mat/partition/partition.c

Examples#

src/ksp/ksp/tutorials/ex64.c
src/mat/tutorials/ex11.c
src/mat/tutorials/ex15.c
src/mat/tutorials/ex15f.F90
src/mat/tutorials/ex17.c
src/mat/tutorials/ex17f.F90

Implementations#

MatPartitioningApply_Chaco in src/mat/partition/impls/chaco/chaco.c
MatPartitioningApply_Hierarchical in src/mat/partition/impls/hierarchical/hierarchical.c
MatPartitioningApply_Party in src/mat/partition/impls/party/party.c
MatPartitioningApply_Parmetis in src/mat/partition/impls/pmetis/pmetis.c
MatPartitioningApply_PTScotch in src/mat/partition/impls/scotch/scotch.c

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