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
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
<HTML>
<HEAD> <link rel="canonical" href="http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Mat/MatMPIAdjCreateNonemptySubcommMat.html" />
<META NAME="GENERATOR" CONTENT="DOCTEXT">
<TITLE>MatMPIAdjCreateNonemptySubcommMat</TITLE>
</HEAD>
<BODY BGCOLOR="FFFFFF">
<div id="version" align=right><b>petsc-3.10.3 2018-12-18</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-3.10.3 v3.10.3 docs/manualpages/Mat/MatMPIAdjCreateNonemptySubcommMat.html "><small>Report Typos and Errors</small></a></div>
<A NAME="MatMPIAdjCreateNonemptySubcommMat"><H1>MatMPIAdjCreateNonemptySubcommMat</H1></A>
create the same MPIAdj matrix on a subcommunicator containing only processes owning a positive number of rows
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscmat.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../Mat/MatMPIAdjCreateNonemptySubcommMat.html#MatMPIAdjCreateNonemptySubcommMat">MatMPIAdjCreateNonemptySubcommMat</A>(<A HREF="../Mat/Mat.html#Mat">Mat</A> A,<A HREF="../Mat/Mat.html#Mat">Mat</A> *B)
</PRE>
Collective
<P>
<H3><FONT COLOR="#CC3333">Input Arguments</FONT></H3>
<DT><B>A </B> -original MPIAdj matrix
<br>
<P>
<H3><FONT COLOR="#CC3333">Output Arguments</FONT></H3>
<DT><B>B </B> -matrix on subcommunicator, NULL on ranks that owned zero rows of A
<br>
<P>
<P>
<H3><FONT COLOR="#CC3333">Note</FONT></H3>
This function is mostly useful for internal use by mesh partitioning packages that require that every process owns at least one row.
<P>
The matrix B should be destroyed with <A HREF="../Mat/MatDestroy.html#MatDestroy">MatDestroy</A>(). The arrays are not copied, so B should be destroyed before A is destroyed.
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Mat/MatCreateMPIAdj.html#MatCreateMPIAdj">MatCreateMPIAdj</A>()
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>developer<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/mat/impls/adj/mpi/mpiadj.c.html#MatMPIAdjCreateNonemptySubcommMat">src/mat/impls/adj/mpi/mpiadj.c</A>
<P><H3><FONT COLOR="CC3333">Implementations</FONT></H3><A HREF="../../../src/mat/impls/adj/mpi/mpiadj.c.html#MatMPIAdjCreateNonemptySubcommMat_MPIAdj">MatMPIAdjCreateNonemptySubcommMat_MPIAdj in src/mat/impls/adj/mpi/mpiadj.c</A><BR>
<BR><A HREF="./index.html">Index of all Mat 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>
|
