#include "petscpc.h" PetscErrorCode PCSPAISetSp(PC pc,int sp)
| pc | - the preconditioner | |
| n | - 0 or 1 |
Notes: If A has a symmetric nonzero pattern use -sp 1 to improve performance by eliminating some communication in the parallel version. Even if A does not have a symmetric nonzero pattern -sp 1 may well lead to good results, but the code will not follow the published SPAI algorithm exactly.
Level:intermediate
Location:src/ksp/pc/impls/spai/ispai.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages