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<A NAME="PetscMapCreateMPI"><H1>PetscMapCreateMPI</H1></A>
Creates a map object.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscvec.h"
int PetscMapCreateMPI(MPI_Comm comm,int n,int N,PetscMap *m)
</PRE>
Collective on MPI_Comm
<P>
<H3><FONT COLOR="#CC3333">Input Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B><A HREF="../Sys/comm.html#comm">comm</A> </B></TD><TD>- the MPI communicator to use
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>n </B></TD><TD>- local vector length (or PETSC_DECIDE to have calculated if N is given)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>N </B></TD><TD>- global vector length (or PETSC_DECIDE to have calculated if n is given)
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<DT><B>mm </B> -the map object
<br>
<P>
<H3><FONT COLOR="#CC3333">Suggested by</FONT></H3>
Robert Clay and Alan Williams, developers of ISIS++, Sandia National Laboratories.
<P>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Vec/PetscMapDestroy.html#PetscMapDestroy">PetscMapDestroy</A>(), <A HREF="../Vec/PetscMapGetLocalSize.html#PetscMapGetLocalSize">PetscMapGetLocalSize</A>(), <A HREF="../Vec/PetscMapGetSize.html#PetscMapGetSize">PetscMapGetSize</A>(), <A HREF="../Vec/PetscMapGetGlobalRange.html#PetscMapGetGlobalRange">PetscMapGetGlobalRange</A>(),
<BR><A HREF="../Vec/PetscMapGetLocalRange.html#PetscMapGetLocalRange">PetscMapGetLocalRange</A>()
<P>
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>developer
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/vec/impls/mpi/pmap.c.html#PetscMapCreateMPI">src/vec/impls/mpi/pmap.c</A>
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