PETSc version 3.15.5
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