PCHPDDMHasNeumannMat#

Informs PCHPDDM that the Mat passed to PCHPDDMSetAuxiliaryMat() is the local Neumann matrix.

Synopsis#

#include "petscpc.h" 
PetscErrorCode PCHPDDMHasNeumannMat(PC pc, PetscBool has)

Input Parameters#

pc - preconditioner context
has - Boolean value

Notes#

This may be used to bypass a call to MatCreateSubMatrices() and to MatConvert() for MATSBAIJ matrices.

If a DMCreateNeumannOverlap() implementation is available in the DM attached to the Pmat, or the Amat, or the PC, the flag is internally set to PETSC_TRUE. Its default value is otherwise PETSC_FALSE.

Level#

intermediate

Location#

src/ksp/pc/impls/hpddm/pchpddm.cxx

Examples#

src/ksp/ksp/tutorials/ex76.c
src/ksp/ksp/tutorials/ex76f.F90

Implementations#

PCHPDDMHasNeumannMat_HPDDM in src/ksp/pc/impls/hpddm/pchpddm.cxx

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