petsc-3.13.6 2020-09-29
PCSORGetOmega
Gets the SOR relaxation coefficient, omega (where omega = 1.0 by default).
Synopsis
#include "petscpc.h"
PetscErrorCode PCSORGetOmega(PC pc,PetscReal *omega)
Logically Collective on PC
Input Parameter
pc -the preconditioner context
Output Parameter
omega -relaxation coefficient (0 < omega < 2).
Options Database Key
-pc_sor_omega <omega> -Sets omega
See Also
PCSORSetSymmetric(), PCSORSetIterations(), PCEisenstatSetOmega(), PCSORSetOmega()
Level
intermediate
Location
src/ksp/pc/impls/sor/sor.c
Implementations
PCSORGetOmega_SOR in src/ksp/pc/impls/sor/sor.c
Index of all PC routines
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Index of all manual pages