# PCSORSetIterations

Sets the number of inner iterations to be used by the SOR preconditioner. The default is 1.

### Synopsis

    #include "petscpc.h"
    PetscErrorCode PETSCKSP_DLLEXPORT PCSORSetIterations(PC pc,PetscInt its,PetscInt lits)

Collective on PC

### Input Parameters

| pc | - the preconditioner context
| lits | - number of local iterations, smoothings over just variables on processor
| its | - number of parallel iterations to use; each parallel iteration has lits local iterations

### Options Database Key

| -pc_sor_its <its> | - Sets number of iterations
| -pc_sor_lits <lits> | - Sets number of local iterations

Notes: When run on one processor the number of smoothings is lits*its

### Keywords

PC, SOR, SSOR, set, iterations

### See Also

PCSORSetOmega(), PCSORSetSymmetric()

Level:intermediate
Location:src/ksp/pc/impls/sor/sor.c
Index of all PC routines
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Index of all manual pages