#include "petscpc.h" PetscErrorCode PCASMSetLocalSubdomains(PC pc,PetscInt n,IS is,IS is_local)Collective on PC
|pc||- the preconditioner context|
|n||- the number of subdomains for this processor (default value = 1)|
|is||- the index set that defines the subdomains for this processor (or NULL for PETSc to determine subdomains)|
|is_local||- the index sets that define the local part of the subdomains for this processor, not used unless PCASMType is PC_ASM_RESTRICT (or NULL to not provide these)|
By default the ASM preconditioner uses 1 block per processor.
Use PCASMSetTotalSubdomains() to set the subdomains for all processors.
If is_local is provided and PCASMType is PC_ASM_RESTRICT then the solution only over the is_local region is interpolated back to form the global solution (this is the standard restricted additive Schwarz method)
If the is_local is provided and PCASMType is PC_ASM_INTERPOLATE or PC_ASM_NONE then an error is generated since there is no code to handle that case.
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages