MatSubdomainsCreateCoalesce#

Creates index subdomains by coalescing adjacent MPI processes’ ownership ranges.

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatSubdomainsCreateCoalesce(Mat A, PetscInt N, PetscInt *n, IS *iss[])

Collective

Input Parameters#

A - the matrix to create subdomains from
N - requested number of subdomains

Output Parameters#

n - number of subdomains resulting on this MPI process
iss - IS list with indices of subdomains on this MPI process

Note#

The number of subdomains must be smaller than the communicator size

See Also#

Matrices, Mat, IS

Level#

advanced

Location#

src/mat/interface/matrix.c

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