PetscSectionGetPointLayout#
Get a PetscLayout for the points with nonzero dof counts of the unnamed default field within this PetscSections local chart
Synopsis#
#include "petscsection.h"
PetscErrorCode PetscSectionGetPointLayout(MPI_Comm comm, PetscSection s, PetscLayout *layout)
Collective
Input Parameters#
comm - The
MPI_Comms - The
PetscSection
Output Parameter#
layout - The point layout for the data that defines the section
Notes#
PetscSectionGetValueLayout() provides similar information but counting the total number of degrees of freedom on the MPI process (excluding constrained
degrees of freedom).
This count includes constrained degrees of freedom
This is usually called on the default global section.
Example#
The chart is [2,5), point 2 has 2 dof, point 3 has 0 dof, point 4 has 1 dof
The local size of the `PetscLayout` is 2 since 2 points have a non-zero number of dof
Developer Note#
I find the names of these two functions extremely non-informative
See Also#
PetscSection, PetscSection, PetscSectionGetValueLayout(), PetscSectionCreate()
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