petsc-dev 2014-04-18
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PCASMCreateSubdomains

Creates the index sets for the overlapping Schwarz preconditioner for a 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 Parameters

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()

In the Fortran version you must provide the array outis[] already allocated of length n.

Keywords

PC, ASM, additive Schwarz, create, subdomains, unstructured grid

See Also

PCASMSetLocalSubdomains(), PCASMDestroySubdomains()

Level:advanced
Location:
src/ksp/pc/impls/asm/asm.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages