PCSORSetOmega

Sets the SOR relaxation coefficient, omega (where omega = 1.0 by default).

Synopsis

#include "petscpc.h" 
PetscErrorCode PCSORSetOmega(PC pc, PetscReal omega)

Logically Collective

Input Parameters

• pc - the preconditioner context

• omega - relaxation coefficient (0 < omega < 2).

Options Database Key

• -pc_sor_omega - Sets omega

Note

If omega != 1, you will need to set the MAT_USE_INODES option to PETSC_FALSE on the matrix.

See Also

PCSOR, PCSORSetSymmetric(), PCSORSetIterations(), PCEisenstatSetOmega(), MatSetOption()

Level

intermediate

Location

src/ksp/pc/impls/sor/sor.c

Implementations

PCSORSetOmega_SOR in src/ksp/pc/impls/sor/sor.c

---

Edit on GitLab

Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages