petsc-3.14.6 2021-03-30
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MatGetOwnershipRangeColumn

 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 block")

Synopsis

#include "petscmat.h" 
PetscErrorCode MatGetOwnershipRangeColumn(Mat mat,PetscInt *m,PetscInt *n)
Not Collective, unless matrix has not been allocated, then collective on Mat

Input Parameters

mat - the matrix

Output Parameters

m - the global index of the first local column
n - one more than the global index of the last local column

Notes

both output parameters can be NULL on input.

See Also

MatGetOwnershipRange(), MatGetOwnershipRanges(), MatGetOwnershipRangesColumn()

Level

developer

Location

src/mat/interface/matrix.c

Examples

src/mat/tutorials/ex10.c.html
src/snes/tutorials/ex48.c.html

Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages