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<div id="version" align=right><b>petsc-3.4.2 2013-07-02</b></div>
<A NAME="PCGASMSetDMSubdomains"><H1>PCGASMSetDMSubdomains</H1></A>
Indicates whether to use <A HREF="../DM/DMCreateDomainDecomposition.html#DMCreateDomainDecomposition">DMCreateDomainDecomposition</A>() to define the subdomains, whenever possible. Logically Collective
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscpc.h"
PetscErrorCode PCGASMSetDMSubdomains(PC pc,PetscBool flg)
</PRE>
<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>pc </B></TD><TD>- the preconditioner
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>flg </B></TD><TD>- boolean indicating whether to use subdomains defined by the DM
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Options Database Key</FONT></H3>
<DT><B>-pc_gasm_dm_subdomains</B> -
<br>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
<A HREF="../PC/PCGASMSetTotalSubdomains.html#PCGASMSetTotalSubdomains">PCGASMSetTotalSubdomains</A>() and <A HREF="../PC/PCGASMSetOverlap.html#PCGASMSetOverlap">PCGASMSetOverlap</A>() take precedence over <A HREF="../PC/PCGASMSetDMSubdomains.html#PCGASMSetDMSubdomains">PCGASMSetDMSubdomains</A>(),
so setting either of the first two effectively turns the latter off.
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
<A HREF="../PC/PC.html#PC">PC</A>, ASM, DM, set, subdomains, additive Schwarz
<BR>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../PC/PCGASMGetDMSubdomains.html#PCGASMGetDMSubdomains">PCGASMGetDMSubdomains</A>(), <A HREF="../PC/PCGASMSetTotalSubdomains.html#PCGASMSetTotalSubdomains">PCGASMSetTotalSubdomains</A>(), <A HREF="../PC/PCGASMSetOverlap.html#PCGASMSetOverlap">PCGASMSetOverlap</A>()
<BR><A HREF="../PC/PCGASMCreateSubdomains2D.html#PCGASMCreateSubdomains2D">PCGASMCreateSubdomains2D</A>()
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>intermediate
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/ksp/pc/impls/gasm/gasm.c.html#PCGASMSetDMSubdomains">src/ksp/pc/impls/gasm/gasm.c</A>
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