petsc-3.8.2 2017-11-09
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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
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/tao/unconstrained/examples/tutorials/heat-data-assimulation.c.html