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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
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<TITLE>DMMGSetOptionsPrefix</TITLE>
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<A NAME="DMMGSetOptionsPrefix"><H1>DMMGSetOptionsPrefix</H1></A>
Sets the prefix used for the solvers inside a <A HREF="../DMMG/DMMG.html#DMMG">DMMG</A>
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscdm.h"
#include "petscksp.h"
#include "petscpcmg.h"
#include "petscdmmg.h"
#include "petscpc.h"
PetscErrorCode DMMGSetOptionsPrefix(DMMG *dmmg,const char prefix[])
</PRE>
This is being deprecated. Use <A HREF="../KSP/KSPSetDM.html#KSPSetDM">KSPSetDM</A>() for linear problems and <A HREF="../SNES/SNESSetDM.html#SNESSetDM">SNESSetDM</A>() for nonlinear problems.
See src/ksp/ksp/examples/tutorials/ex45.c and src/snes/examples/tutorials/ex57.c
<P>
Logically Collective on <A HREF="../Sys/MPI_Comm.html#MPI_Comm">MPI_Comm</A>
<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>dmmg </B></TD><TD>- the <A HREF="../DMMG/DMMG.html#DMMG">DMMG</A> object created with <A HREF="../DMMG/DMMGCreate.html#DMMGCreate">DMMGCreate</A>()
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>prefix </B></TD><TD>- the prefix string
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../DMMG/DMMGDestroy.html#DMMGDestroy">DMMGDestroy</A>(), <A HREF="../DMMG/DMMGSetUser.html#DMMGSetUser">DMMGSetUser</A>(), <A HREF="../DMMG/DMMGGetUser.html#DMMGGetUser">DMMGGetUser</A>(), <A HREF="../DMMG/DMMGCreate.html#DMMGCreate">DMMGCreate</A>(), <A HREF="../DMMG/DMMGSetNullSpace.html#DMMGSetNullSpace">DMMGSetNullSpace</A>()
<BR>
<P>
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>intermediate
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/snes/utils/damg.c.html#DMMGSetOptionsPrefix">src/snes/utils/damg.c</A>
<BR><A HREF="./index.html">Index of all DMMG routines</A>
<BR><A HREF="../../index.html">Table of Contents for all manual pages</A>
<BR><A HREF="../singleindex.html">Index of all manual pages</A>
<A HREF="../../../src/snes/examples/tutorials/ex31.c.html">src/snes/examples/tutorials/ex31.c.html</A><BR>
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