PCSORSetIterations#

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

Synopsis#

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

Logically Collective

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 Keys#

  • -pc_sor_its - Sets number of iterations

  • -pc_sor_lits - Sets number of local iterations

Note#

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

See Also#

PCSOR, PCSORSetOmega(), PCSORSetSymmetric()

Level#

intermediate

Location#

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

Implementations#

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

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