MatMPIDenseSetPreallocation

Sets the array used to store the matrix entries

Synopsis

#include "petscmat.h"  
PetscErrorCode MatMPIDenseSetPreallocation(Mat B, PetscScalar *data)

Collective

Input Parameters

• B - the matrix

• data - optional location of matrix data. Set to NULL for PETSc to control all matrix memory allocation.

Notes

The dense format is fully compatible with standard Fortran storage by columns.

The data input variable is intended primarily for Fortran programmers who wish to allocate their own matrix memory space. Most users should set data to NULL.

See Also

Matrices, Mat, MATMPIDENSE, MatCreate(), MatCreateSeqDense(), MatSetValues()

Level

intermediate

Location

src/mat/impls/dense/mpi/mpidense.c

Implementations

MatMPIDenseSetPreallocation_MPIDense() in src/mat/impls/dense/mpi/mpidense.c

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