petsc-3.13.6 2020-09-29
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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

See Also

MatGetOwnershipRange(), MatGetOwnershipRangeColumn(), MatGetOwnershipRanges()

Level

beginner

Location

src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages