petsc-3.13.6 2020-09-29

MatGetLocalSize

Returns the number of local rows and local columns of a matrix, that is the local size of the left and right vectors as returned by MatCreateVecs().

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

Not Collective

mat -the matrix

	m	- the number of local rows
	n	- the number of local columns

Note: both output parameters can be NULL on input.

beginner