petsc-3.14.6 2021-03-30

MatGetOwnershipRangesColumn

Returns the range of matrix columns associated with rows of a vector one multiplies by that owned by this processor. (The columns of the "diagonal blocks" for each process)

Synopsis

#include "petscmat.h" 
PetscErrorCode MatGetOwnershipRangesColumn(Mat mat,const PetscInt **ranges)

Not Collective, unless matrix has not been allocated, then collective on Mat

Input Parameters

mat

- the matrix

Output Parameters

ranges

- start of each processors portion plus one more then the total length at the end

Level

beginner

Location