petsc-3.14.5 2021-03-03
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# DMCreateSectionSF

Create the PetscSF encoding the parallel dof overlap for the DM based upon the PetscSections describing the data layout.

### Synopsis

    #include "petscdm.h"
    #include "petscdmlabel.h"
    #include "petscds.h"
    PetscErrorCode DMCreateSectionSF(DM dm, PetscSection localSection, PetscSection globalSection)

### Input Parameters

| dm | - The DM
| localSection | - PetscSection describing the local data layout
| globalSection | - PetscSection describing the global data layout

Notes: One usually uses DMGetSectionSF() to obtain the PetscSF

Developer Note: Since this routine has for arguments the two sections from the DM and puts the resulting PetscSF directly into the DM, perhaps this function should not take the local and global sections as input and should just obtain them from the DM?

### See Also

DMGetSectionSF(), DMSetSectionSF(), DMGetLocalSection(), DMGetGlobalSection()

### Level

developer

### Location

src/dm/interface/dm.c
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages