PetscSectionCreateGlobalSectionCensored#
Create a PetscSection
describing the globallayout using a local (sequential) PetscSection
on each MPI process and an PetscSF
describing the section point overlap.
Synopsis#
#include "petscsection.h"
PetscErrorCode PetscSectionCreateGlobalSectionCensored(PetscSection s, PetscSF sf, PetscBool includeConstraints, PetscInt numExcludes, const PetscInt excludes[], PetscSection *gsection)
Input Parameters#
s - The
PetscSection
for the local field layoutsf - The
PetscSF
describing parallel layout of the section pointsincludeConstraints - By default this is
PETSC_FALSE
, meaning that the global vector will not possess constrained dofsnumExcludes - The number of exclusion ranges, this must have the same value on all MPI processes
excludes - An array [start_0, end_0, start_1, end_1, …] where there are
numExcludes
pairs and must have the same values on all MPI processes
Output Parameter#
gsection - The
PetscSection
for the global field layout
Notes#
On each MPI process gsection
inherits the chart of the s
on that process.
This sets negative sizes and offsets to points not owned by this process as defined by sf
but that are within the local value of the chart of gsection
.
In those locations the value of size is -(size+1) and the value of the offset on the remote process is -(off+1).
This routine augments PetscSectionCreateGlobalSection()
by allowing one to exclude certain ranges in the chart of the PetscSection
Developer Note#
This is a terrible function name
See Also#
PetscSection, PetscSection
, PetscSectionCreate()
, PetscSectionCreateGlobalSectionCensored()
Level#
advanced
Location#
src/vec/is/section/interface/section.c
Index of all PetscSection routines
Table of Contents for all manual pages
Index of all manual pages