petsc-3.14.6 2021-03-30

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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