PCASMCreateSubdomains#
Creates the index sets for the overlapping Schwarz preconditioner, PCASM,  for any problem on a general grid.
Synopsis#
#include "petscpc.h" 
PetscErrorCode PCASMCreateSubdomains(Mat A, PetscInt n, IS *outis[])
Collective
Input Parameters#
- A - The global matrix operator 
- n - the number of local blocks 
Output Parameter#
- outis - the array of index sets defining the subdomains 
Note#
This generates nonoverlapping subdomains; the PCASM will generate the overlap
from these if you use PCASMSetLocalSubdomains()
Fortran Notes#
You must provide the array outis already allocated of length n.
See Also#
KSP: Linear System Solvers, PCASM, PCASMSetLocalSubdomains(), PCASMDestroySubdomains()
Level#
advanced
Location#
Examples#
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages