MatGetOwnershipRangesColumn#
Returns the ranges of matrix columns associated with rows of a vector one multiplies this vector by that are owned by each processor. (The columns of the “diagonal blocks”, for most sparse matrix formats). See :any:<sec_matlayout> for details on matrix layouts.
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
See Also#
Mat, MatGetOwnershipRange(), MatGetOwnershipRangeColumn(), MatGetOwnershipRanges()
Level#
beginner
Location#
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages