MatGetLocalSize

For most matrix formats, excluding MATELEMENTAL and MATSCALAPACK, Returns the number of local rows and local columns of a matrix. For all matrices this is the local size of the left and right vectors as returned by MatCreateVecs().

Synopsis

#include "petscmat.h" 
PetscErrorCode MatGetLocalSize(Mat mat, PetscInt *m, PetscInt *n)

Not Collective

Input Parameter

• mat - the matrix

Output Parameters

• m - the number of local rows, use NULL to not obtain this value

• n - the number of local columns, use NULL to not obtain this value

See Also

Matrices, Mat, MatSetSizes(), MatGetSize()

Level

beginner

Location

src/mat/interface/matrix.c

Examples

src/mat/tutorials/ex20f.F90
src/ksp/ksp/tutorials/ex77f.F90
src/ksp/ksp/tutorials/ex27.c
src/ksp/pc/tutorials/ex4.c
src/ksp/ksp/tutorials/ex10.c
src/snes/tutorials/ex12.c
src/ksp/ksp/tutorials/ex72.c
src/ksp/ksp/tutorials/ex71.c
src/ksp/ksp/tutorials/ex87.c
src/ksp/ksp/tutorials/ex77.c

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Index of all Mat routines
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Index of all manual pages