petsc-3.10.2 2018-10-09
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MatSubdomainsCreateCoalesce

Creates index subdomains by coalescing adjacent ranks' ownership ranges.

Synopsis

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

Input Parameters

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

Output Parameters

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

Notes

number of subdomains must be smaller than the communicator size

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