petsc-3.7.1 2016-05-15
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MatSetBlockSize

Sets the matrix block size.

Synopsis

#include "petscmat.h" 
PetscErrorCode MatSetBlockSize(Mat mat,PetscInt bs)
Logically Collective on Mat Many br

Input Parameters

mat - the matrix Many br
bs - block size Many br

Notes

Block row formats are MATSEQBAIJ, MATMPIBAIJ, MATSEQSBAIJ, MATMPISBAIJ. These formats ALWAYS have square block storage in the matrix. Many br

This must be called before MatSetUp() or MatXXXSetPreallocation() (or will default to 1) and the block size cannot be changed later Many br

Many br

See Also

MatCreateSeqBAIJ(), MatCreateBAIJ(), MatGetBlockSize(), MatSetBlockSizes(), MatGetBlockSizes()

Level:intermediate
Location:
src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/ksp/ksp/examples/tutorials/ex49.c.html
src/ksp/ksp/examples/tutorials/ex55.c.html
src/ksp/ksp/examples/tutorials/ex56.c.html