PCILUSetUseInPlace
Tells the system to do an in-place incomplete factorization. Collective on PC
Synopsis
#include "petscpc.h"
int PCILUSetUseInPlace(PC pc)
Input Parameters
| pc | - the preconditioner context
|
Options Database Key
| -pc_ilu_in_place | - Activates in-place factorization
|
Notes
PCILUSetUseInPlace() is intended for use with matrix-free variants of
Krylov methods, or when a different matrices are employed for the linear
system and preconditioner, or with ASM preconditioning. Do NOT use
this option if the linear system
matrix also serves as the preconditioning matrix, since the factored
matrix would then overwrite the original matrix.
Only works well with ILU(0).
Keywords
PC, set, factorization, inplace, in-place, ILU
See Also
PCLUSetUseInPlace()
Level:intermediate
Location:src/sles/pc/impls/ilu/ilu.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages