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<TITLE>PetscSFFetchAndOpEnd</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/PetscSF/PetscSFFetchAndOpEnd.html "><small>Report Typos and Errors</small></a></div>
<A NAME="PetscSFFetchAndOpEnd"><H1>PetscSFFetchAndOpEnd</H1></A>
end operation started in matching call to <A HREF="../PetscSF/PetscSFFetchAndOpBegin.html#PetscSFFetchAndOpBegin">PetscSFFetchAndOpBegin</A>() to fetch values from roots and update atomically by applying operation using my leaf value
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscsf.h"
PetscErrorCode PetscSFFetchAndOpEnd(PetscSF sf,MPI_Datatype unit,void *rootdata,const void *leafdata,void *leafupdate,MPI_Op op)
</PRE>
Collective
<P>
<H3><FONT COLOR="#CC3333">Input Arguments</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>sf </B></TD><TD>- star forest
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>unit </B></TD><TD>- data type
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>leafdata </B></TD><TD>- leaf values to use in reduction
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>op </B></TD><TD>- operation to use for reduction
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Arguments</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>rootdata </B></TD><TD>- root values to be updated, input state is seen by first process to perform an update
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>leafupdate </B></TD><TD>- state at each leaf's respective root immediately prior to my atomic update
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../PetscSF/PetscSFComputeDegreeEnd.html#PetscSFComputeDegreeEnd">PetscSFComputeDegreeEnd</A>(), <A HREF="../PetscSF/PetscSFReduceEnd.html#PetscSFReduceEnd">PetscSFReduceEnd</A>(), <A HREF="../PetscSF/PetscSFSetGraph.html#PetscSFSetGraph">PetscSFSetGraph</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>advanced
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/vec/is/sf/interface/sf.c.html#PetscSFFetchAndOpEnd">src/vec/is/sf/interface/sf.c</A>
<BR><A HREF="./index.html">Index of all PetscSF 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/vec/is/sf/examples/tutorials/ex1.c.html">src/vec/is/sf/examples/tutorials/ex1.c.html</A><BR>
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