petsc-master 2014-12-18
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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
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages

Examples

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