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<TITLE>DMLocalToLocalBegin</TITLE>
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<div id="version" align=right><b>petsc-3.7.5 2017-01-01</b></div>
<div id="bugreport" align=right><a href="mailto:petsc-maint@mcs.anl.gov?subject=Typo or Error in Documentation &body=Please describe the typo or error in the documentation: petsc-3.7.5 v3.7.5 docs/manualpages/DM/DMLocalToLocalBegin.html "><small>Report Typos and Errors</small></a></div>
<A NAME="DMLocalToLocalBegin"><H1>DMLocalToLocalBegin</H1></A>
Maps from a local vector (including ghost points that contain irrelevant values) to another local vector where the ghost points in the second are set correctly. Must be followed by <A HREF="../DM/DMLocalToLocalEnd.html#DMLocalToLocalEnd">DMLocalToLocalEnd</A>().
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscdm.h"
#include "petscdmlabel.h"
PetscErrorCode DMLocalToLocalBegin(DM dm,Vec g,InsertMode mode,Vec l)
</PRE>
Neighbor-wise Collective on <A HREF="../DM/DM.html#DM">DM</A> and <A HREF="../Vec/Vec.html#Vec">Vec</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>dm </B></TD><TD>- the <A HREF="../DM/DM.html#DM">DM</A> object
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>g </B></TD><TD>- the original local vector
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>mode </B></TD><TD>- one of <A HREF="../Sys/INSERT_VALUES.html#INSERT_VALUES">INSERT_VALUES</A> or <A HREF="../Sys/ADD_VALUES.html#ADD_VALUES">ADD_VALUES</A>
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<DT><B>l </B> -the local vector with correct ghost values
<br>
<P>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
The local vectors used here need not be the same as those
obtained from <A HREF="../DM/DMCreateLocalVector.html#DMCreateLocalVector">DMCreateLocalVector</A>(), BUT they
must have the same parallel data layout; they could, for example, be
obtained with <A HREF="../Vec/VecDuplicate.html#VecDuplicate">VecDuplicate</A>() from the <A HREF="../DM/DM.html#DM">DM</A> originating vectors.
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
<A HREF="../DM/DM.html#DM">DM</A>, local-to-local, begin
<BR>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../DM/DMCoarsen.html#DMCoarsen">DMCoarsen</A>(), <A HREF="../DM/DMDestroy.html#DMDestroy">DMDestroy</A>(), <A HREF="../DM/DMView.html#DMView">DMView</A>(), <A HREF="../DM/DMCreateLocalVector.html#DMCreateLocalVector">DMCreateLocalVector</A>(), <A HREF="../DM/DMCreateGlobalVector.html#DMCreateGlobalVector">DMCreateGlobalVector</A>(), <A HREF="../DM/DMCreateInterpolation.html#DMCreateInterpolation">DMCreateInterpolation</A>(), <A HREF="../DM/DMLocalToLocalEnd.html#DMLocalToLocalEnd">DMLocalToLocalEnd</A>(), <A HREF="../DM/DMGlobalToLocalEnd.html#DMGlobalToLocalEnd">DMGlobalToLocalEnd</A>(), <A HREF="../DM/DMLocalToGlobalBegin.html#DMLocalToGlobalBegin">DMLocalToGlobalBegin</A>()
<BR>
<P>
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>intermediate
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/dm/interface/dm.c.html#DMLocalToLocalBegin">src/dm/interface/dm.c</A>
<BR><A HREF="./index.html">Index of all DM 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>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/dm/examples/tutorials/ex13f90.F90.html">src/dm/examples/tutorials/ex13f90.F90.html</A><BR>
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