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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
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<TITLE>DMMGSetDM</TITLE>
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<A NAME="DMMGSetDM"><H1>DMMGSetDM</H1></A>
Sets the coarse grid information for the grids
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscdm.h"
#include "petscksp.h"
#include "petscpcmg.h"
#include "petscdmmg.h"
#include "petscpc.h"
PetscErrorCode DMMGSetDM(DMMG *dmmg, DM dm)
</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="../DMMG/DMMG.html#DMMG">DMMG</A> and DM
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</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 context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>dm </B></TD><TD>- the DMDA or DMComposite object
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Options Database Keys</FONT></H3>
<DT><B>-dmmg_refine: Use the input problem as the coarse level and refine.</B> -. -dmmg_refine false: Use the input problem as the fine level and coarsen.
<br>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../DMMG/DMMGCreate.html#DMMGCreate">DMMGCreate</A>(), <A HREF="../DMMG/DMMGDestroy.html#DMMGDestroy">DMMGDestroy</A>(), <A HREF="../DMMG/DMMGSetMatType.html#DMMGSetMatType">DMMGSetMatType</A>()
<BR>
<P>
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>advanced
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/snes/utils/damg.c.html#DMMGSetDM">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/ksp/ksp/examples/tutorials/ex22.c.html">src/ksp/ksp/examples/tutorials/ex22.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex25.c.html">src/ksp/ksp/examples/tutorials/ex25.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex28.c.html">src/ksp/ksp/examples/tutorials/ex28.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex29.c.html">src/ksp/ksp/examples/tutorials/ex29.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex31.c.html">src/ksp/ksp/examples/tutorials/ex31.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex32.c.html">src/ksp/ksp/examples/tutorials/ex32.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex34.c.html">src/ksp/ksp/examples/tutorials/ex34.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex35.c.html">src/ksp/ksp/examples/tutorials/ex35.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex37.c.html">src/ksp/ksp/examples/tutorials/ex37.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex47.c.html">src/ksp/ksp/examples/tutorials/ex47.c.html</A><BR>
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