1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
<HTML>
<HEAD> <link rel="canonical" href="http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/DM/DMCreateFieldDecomposition.html" />
<META NAME="GENERATOR" CONTENT="DOCTEXT">
<TITLE>DMCreateFieldDecomposition</TITLE>
</HEAD>
<BODY BGCOLOR="FFFFFF">
<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/DMCreateFieldDecomposition.html "><small>Report Typos and Errors</small></a></div>
<A NAME="DMCreateFieldDecomposition"><H1>DMCreateFieldDecomposition</H1></A>
Returns a list of <A HREF="../IS/IS.html#IS">IS</A> objects defining a decomposition of a problem into subproblems corresponding to different fields: each <A HREF="../IS/IS.html#IS">IS</A> contains the global indices of the dofs of the corresponding field. The optional list of DMs define the <A HREF="../DM/DM.html#DM">DM</A> for each subproblem. Generalizes <A HREF="../DM/DMCreateFieldIS.html#DMCreateFieldIS">DMCreateFieldIS</A>().
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscdm.h"
#include "petscdmlabel.h"
PetscErrorCode DMCreateFieldDecomposition(DM dm, PetscInt *len, char ***namelist, IS **islist, DM **dmlist)
</PRE>
Not collective
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<DT><B>dm </B> -the <A HREF="../DM/DM.html#DM">DM</A> object
<br>
<P>
<H3><FONT COLOR="#CC3333">Output Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>len </B></TD><TD>- The number of subproblems in the field decomposition (or NULL if not requested)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>namelist </B></TD><TD>- The name for each field (or NULL if not requested)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>islist </B></TD><TD>- The global indices for each field (or NULL if not requested)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>dmlist </B></TD><TD>- The DMs for each field subproblem (or NULL, if not requested; if NULL is returned, no DMs are defined)
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
The user is responsible for freeing all requested arrays. In particular, every entry of names should be freed with
<A HREF="../Sys/PetscFree.html#PetscFree">PetscFree</A>(), every entry of is should be destroyed with <A HREF="../IS/ISDestroy.html#ISDestroy">ISDestroy</A>(), every entry of dm should be destroyed with <A HREF="../DM/DMDestroy.html#DMDestroy">DMDestroy</A>(),
and all of the arrays should be freed with <A HREF="../Sys/PetscFree.html#PetscFree">PetscFree</A>().
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../DM/DMDestroy.html#DMDestroy">DMDestroy</A>(), <A HREF="../DM/DMView.html#DMView">DMView</A>(), <A HREF="../DM/DMCreateInterpolation.html#DMCreateInterpolation">DMCreateInterpolation</A>(), <A HREF="../DM/DMCreateColoring.html#DMCreateColoring">DMCreateColoring</A>(), <A HREF="../DM/DMCreateMatrix.html#DMCreateMatrix">DMCreateMatrix</A>(), <A HREF="../DM/DMCreateFieldIS.html#DMCreateFieldIS">DMCreateFieldIS</A>()
<BR><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#DMCreateFieldDecomposition">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>
</BODY></HTML>
|
