DMCreateNeumannOverlap#

Generates an IS, an unassembled (Neumann) Mat, a setup function, and the corresponding context to be used by PCHPDDM.

Synopsis#

#include "petscdmplex.h"   
PetscErrorCode DMCreateNeumannOverlap_Plex(DM dm, IS *ovl, Mat *J, PetscErrorCode (**setup)(Mat, PetscReal, Vec, Vec, PetscReal, IS, void *), void **setup_ctx)

Input Parameter#

  • dm - preconditioner context

Output Parameters#

  • ovl - index set of overlapping subdomains

  • J - unassembled (Neumann) local matrix

  • setup - function for generating the matrix

  • setup_ctx - context for setup

Options Database Keys#

  • -dm_plex_view_neumann_original - view the DM without overlap

  • -dm_plex_view_neumann_overlap - view the DM with overlap as needed by PCHPDDM

See Also#

DMCreate(), DM, MATIS, PCHPDDM, PCHPDDMSetAuxiliaryMat()

Level#

advanced

Location#

src/dm/impls/plex/plexhpddm.c

Implementations#

DMCreateNeumannOverlap_pforest(DM dm, IS *ovl, Mat *J, PetscErrorCode (**setup) in src/dm/impls/forest/p4est/pforest.h
DMCreateNeumannOverlap_Plex(DM dm, IS *ovl, Mat *J, PetscErrorCode (**setup) in src/dm/impls/plex/plexhpddm.c

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