MatSetVariableBlockSizes#
Sets diagonal point-blocks of the matrix that need not be of the same size
Synopsis#
#include "petscmat.h"
PetscErrorCode MatSetVariableBlockSizes(Mat mat, PetscInt nblocks, PetscInt *bsizes)
Logically Collective
Input Parameters#
mat - the matrix
nblocks - the number of blocks on this process, each block can only exist on a single process
bsizes - the block sizes
Notes#
Currently used by PCVPBJACOBI for MATAIJ matrices
Each variable point-block set of degrees of freedom must live on a single MPI process. That is a point block cannot straddle two MPI processes.
See Also#
Matrices, Mat, MatCreateSeqBAIJ(), MatCreateBAIJ(), MatGetBlockSize(), MatSetBlockSizes(), MatGetBlockSizes(), MatGetVariableBlockSizes(),
MatComputeVariableBlockEnvelope(), PCVPBJACOBI
Level#
intermediate
Location#
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages