petsc-3.12.5 2020-03-29
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/examples/tutorials/ex10.c.html
src/snes/examples/tutorials/ex48.c.html
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages