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<TITLE>MatMPIDenseSetPreallocation</TITLE>
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<A NAME="MatMPIDenseSetPreallocation"><H1>MatMPIDenseSetPreallocation</H1></A>
Sets the array used to store the matrix entries
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscmat.h"
PetscErrorCode MatMPIDenseSetPreallocation(Mat mat,PetscScalar *data)
</PRE>
Not collective
<P>
<H3><FONT COLOR="#CC3333">Input Parameters</FONT></H3>
<DT><B>A </B> -the matrix
<br>
<DT><B>data </B> -optional location of matrix data. Set data=<A HREF="../Sys/PETSC_NULL.html#PETSC_NULL">PETSC_NULL</A> for PETSc
to control all matrix memory allocation.
<br>
</TABLE>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
The dense format is fully compatible with standard Fortran 77
storage by columns.
<P>
The data input variable is intended primarily for Fortran programmers
who wish to allocate their own matrix memory space. Most users should
set data=<A HREF="../Sys/PETSC_NULL.html#PETSC_NULL">PETSC_NULL</A>.
<P>
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
matrix,dense, parallel
<BR>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Mat/MatCreate.html#MatCreate">MatCreate</A>(), <A HREF="../Mat/MatCreateSeqDense.html#MatCreateSeqDense">MatCreateSeqDense</A>(), <A HREF="../Mat/MatSetValues.html#MatSetValues">MatSetValues</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>intermediate
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/mat/impls/dense/mpi/mpidense.c.html#MatMPIDenseSetPreallocation">src/mat/impls/dense/mpi/mpidense.c</A>
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