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#
KSP: Linear System Solvers, PCSOR, PCSORSetSymmetric(), PCSORSetIterations(), PCEisenstatSetOmega(), MatSetOption()
Level#
intermediate
Location#
Implementations#
PCSORSetOmega_SOR() in src/ksp/pc/impls/sor/sor.c
Index of all PC routines
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Index of all manual pages