DMSetMatrixPreallocateSkip#

When DMCreateMatrix() is called the matrix sizes and ISLocalToGlobalMapping will be properly set, but the data structures to store values in the matrices will not be preallocated.

Synopsis#

#include "petscdm.h"          
#include "petscdmlabel.h"     
#include "petscds.h"     
PetscErrorCode DMSetMatrixPreallocateSkip(DM dm, PetscBool skip)

Logically Collective

Input Parameters#

Note#

This is most useful to reduce initialization costs when MatSetPreallocationCOO() and MatSetValuesCOO() will be used.

See Also#

DM Basics, DM, DMCreateMatrix(), DMSetMatrixStructureOnly(), DMSetMatrixPreallocateOnly()

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