PetscSectionGetBlockStarts#

Returns a table indicating which points start new blocks

Synopsis#

#include "petscsection.h"   
PetscErrorCode PetscSectionGetBlockStarts(PetscSection s, PetscBT *blockStarts)

Not Collective, No Fortran Support

Input Parameter#

Output Parameter#

  • blockStarts - The PetscBT with a 1 for each point that begins a block

Notes#

The table is on [0, pEnd - pStart).

This information is used by DMCreateMatrix() to create a variable block size description which is set using MatSetVariableBlockSizes().

See Also#

Low-level Vector Communication, IS, PetscSection, PetscSectionSetBlockStarts(), PetscSectionCreate(), DMCreateMatrix(), MatSetVariableBlockSizes()

Level#

intermediate

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