petsc-3.3-p7 2013-05-11

MatXAIJSetPreallocation

 set preallocation for serial and parallel AIJ, BAIJ, and SBAIJ matrices

Synopsis

#include "petscmat.h"  
PetscErrorCode MatXAIJSetPreallocation(Mat A,PetscInt bs,const PetscInt *dnnz,const PetscInt *onnz,const PetscInt *dnnzu,const PetscInt *onnzu)
Collective on Mat

Input Arguments

A - matrix being preallocated
bs - block size
dnnz - number of nonzero blocks per block row of diagonal part of parallel matrix
onnz - number of nonzero blocks per block row of off-diagonal part of parallel matrix
dnnzu - number of nonzero blocks per block row of upper-triangular part of diagonal part of parallel matrix
onnzu - number of nonzero blocks per block row of upper-triangular part of off-diagonal part of parallel matrix

See Also

MatSeqAIJSetPreallocation(), MatMPIAIJSetPreallocation(), MatSeqBAIJSetPreallocation(), MatMPIBAIJSetPreallocation(), MatSeqSBAIJSetPreallocation(), MatMPISBAIJSetPreallocation()

Level:beginner
Location:src/mat/utils/gcreate.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages