petsc-3.4.5 2014-06-29
PCGASMGetSubdomains
Gets the subdomains supported on this processor for the additive Schwarz preconditioner.
Synopsis
#include "petscpc.h"
PetscErrorCode PCGASMGetSubdomains(PC pc,PetscInt *n,IS *iis[],IS *ois[])
Not Collective
Input Parameter
pc -the preconditioner context
Output Parameters
| n | - the number of subdomains for this processor (default value = 1)
|
| iis | - the index sets that define the inner subdomains (without overlap) supported on this processor (can be NULL)
|
| ois | - the index sets that define the outer subdomains (with overlap) supported on this processor (can be NULL)
|
Notes
The user is responsible for destroying the ISs and freeing the returned arrays.
The IS numbering is in the parallel, global numbering of the vector.
Keywords
PC, GASM, get, subdomains, additive Schwarz
See Also
PCGASMSetTotalSubdomains(), PCGASMSetOverlap(), PCGASMGetSubKSP(),
PCGASMCreateSubdomains2D(), PCGASMSetSubdomains(), PCGASMGetSubmatrices()
Level:advanced
Location:src/ksp/pc/impls/gasm/gasm.c
Index of all PC routines
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Index of all manual pages