PCJacobiSetUseAbs#

Causes the Jacobi preconditioner PCJACOBI to use the absolute values of the diagonal divisors in the preconditioner

Synopsis#

#include "petscpc.h" 
PetscErrorCode PCJacobiSetUseAbs(PC pc, PetscBool flg)

Logically Collective

Input Parameters#

  • pc - the preconditioner context

  • flg - whether to use absolute values or not

Options Database Key#

  • -pc_jacobi_abs - use absolute values

Note#

This takes affect at the next construction of the preconditioner

See Also#

KSP: Linear System Solvers, PCJACOBI, PCJacobiaSetType(), PCJacobiGetUseAbs()

Level#

intermediate

Location#

src/ksp/pc/impls/jacobi/jacobi.c

Implementations#

PCJacobiSetUseAbs_Jacobi() in src/ksp/pc/impls/jacobi/jacobi.c


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