petsc-3.12.5 2020-03-29

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DMSetMatrixPreallocateOnly

When DMCreateMatrix() is called the matrix will be properly preallocated but the nonzero structure and zero values will not be set.

Synopsis

#include "petscdm.h"          
#include "petscdmlabel.h"     
#include "petscds.h"     
PetscErrorCode DMSetMatrixPreallocateOnly(DM dm, PetscBool only)

Logically Collective on dm

Input Parameter

	dm	- the DM
	only	- PETSC_TRUE if only want preallocation

See Also

DMCreateMatrix(), DMSetMatrixStructureOnly()

Level

developer

Location

src/dm/interface/dm.c

Examples

src/ts/examples/tutorials/ex50.c.html
src/tao/unconstrained/examples/tutorials/spectraladjointassimilation.c.html

Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages