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
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
<HTML>
<HEAD> <link rel="canonical" href="http://slepc.upv.es/documentation/current/docs/manualpages/BV/BVMatMult.html" />
<META NAME="GENERATOR" CONTENT="DOCTEXT">
<link rel="stylesheet" href="/slepc.css" type="text/css">
<TITLE>BVMatMult</TITLE>
</HEAD>
<BODY BGCOLOR="FFFFFF">
<div id="version" align=right><b>slepc-3.7.3 2016-09-29</b></div>
<div id="bugreport" align=right><a href="mailto:slepc-maint@upv.es?subject=Typo or Error in Documentation &body=Please describe the typo or error in the documentation: slepc-3.7.3 v3.7.3 docs/manualpages/BV/BVMatMult.html "><small>Report Typos and Errors</small></a></div>
<H1>BVMatMult</H1>
Computes the matrix-vector product for each column, Y=A*V.
<H3><FONT COLOR="#883300">Synopsis</FONT></H3>
<PRE>
#include "slepcbv.h"
PetscErrorCode BVMatMult(BV V,Mat A,BV Y)
</PRE>
Neighbor-wise Collective on Mat and <A HREF="../BV/BV.html#BV">BV</A>
<P>
<H3><FONT COLOR="#883300">Input Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>V </B></TD><TD> - basis vectors context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>A </B></TD><TD> - the matrix
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Output Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0"><TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>Y </B></TD><TD> - the result
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Note</FONT></H3>
Both V and Y must be distributed in the same manner. Only active columns
(excluding the leading ones) are processed.
In the result Y, columns are overwritten starting from the leading ones.
<P>
It is possible to choose whether the computation is done column by column
or as a Mat-Mat product, see <A HREF="../BV/BVSetMatMultMethod.html#BVSetMatMultMethod">BVSetMatMultMethod</A>().
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../BV/BVCopy.html#BVCopy">BVCopy</A>(), <A HREF="../BV/BVSetActiveColumns.html#BVSetActiveColumns">BVSetActiveColumns</A>(), <A HREF="../BV/BVMatMultColumn.html#BVMatMultColumn">BVMatMultColumn</A>(), <A HREF="../BV/BVMatMultHermitianTranspose.html#BVMatMultHermitianTranspose">BVMatMultHermitianTranspose</A>(), <A HREF="../BV/BVSetMatMultMethod.html#BVSetMatMultMethod">BVSetMatMultMethod</A>()
<BR><P><B><FONT COLOR="#883300">Location: </FONT></B><A HREF="../../../src/sys/classes/bv/interface/bvops.c.html#BVMatMult">src/sys/classes/bv/interface/bvops.c</A>
<BR><A HREF="./index.html">Index of all BV 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>
|
