petsc-3.14.6 2021-03-30

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