PCGASMGetSubmatrices#
Gets the local submatrices (for this MPI rank only) for the PCGASM additive Schwarz preconditioner.
Synopsis#
#include "petscpc.h"
PetscErrorCode PCGASMGetSubmatrices(PC pc, PetscInt *n, Mat *mat[])
Not Collective
Input Parameter#
pc - the preconditioner context
Output Parameters#
n - the number of matrices for this MPI rank (default value = 1)
mat - the matrices
Note#
Matrices returned by this routine have the same communicators as the index sets (IS)
used to define subdomains in PCGASMSetSubdomains()
See Also#
KSP: Linear System Solvers, PCGASM, PCGASMSetOverlap(), PCGASMGetSubKSP(),
PCGASMCreateSubdomains2D(), PCGASMSetSubdomains(), PCGASMGetSubdomains()
Level#
advanced
Location#
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages