SlicedSetPreallocation

 sets the matrix memory preallocation for matrices computed by Sliced

Synopsis

#include "petscda.h"     
#include "petscmat.h"    
PetscErrorCode PETSCDM_DLLEXPORT SlicedSetPreallocation(Sliced slice,PetscInt d_nz,const PetscInt d_nnz[],PetscInt o_nz,const PetscInt o_nnz[])
Not Collective

Input Parameters

See Also

SlicedDestroy(), SlicedCreateGlobalVector(), SlicedGetGlobalIndices(), MatMPIAIJSetPreallocation(),
MatMPIBAIJSetPreallocation()

Level:advanced
Location:src/dm/da/utils/sliced.c
Index of all DA routines
Table of Contents for all manual pages
Index of all manual pages

slice - the Sliced object
d_nz - maximum number of nonzeros in any row of diagonal block
d_nnz - number of nonzeros in each row of diagonal block
o_nz - maximum number of nonzeros in any row of off-diagonal block
o_nnz - number of nonzeros in each row of off-diagonal block