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
|
<!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/MATKAIJ.html" />
<META NAME="GENERATOR" CONTENT="DOCTEXT">
<TITLE>MATKAIJ</TITLE>
</HEAD>
<BODY BGCOLOR="FFFFFF">
<div id="version" align=right><b>petsc-3.14.5 2021-03-03</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-3.14.5 v3.14.5 docs/manualpages/Mat/MATKAIJ.html "><small>Report Typos and Errors</small></a></div>
<A NAME="MATKAIJ"><H1>MATKAIJ</H1></A>
<A HREF="../Mat/MATKAIJ.html#MATKAIJ">MATKAIJ</A> = "kaij" - A matrix type to be used to evaluate matrices of form [I \otimes S + A \otimes T], where S is a dense (p \times q) matrix, T is a dense (p \times q) matrix, A is an AIJ (n \times n) matrix, and I is the identity matrix. The resulting matrix is (np \times nq). S and T are always stored independently on all processes as <A HREF="../Sys/PetscScalar.html#PetscScalar">PetscScalar</A> arrays in column-major format.
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
A linear system with multiple right-hand sides, AX = B, can be expressed in the KAIJ-friendly form of (A \otimes I) x = b,
where x and b are column vectors containing the row-major representations of X and B.
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Mat/MatKAIJSetAIJ.html#MatKAIJSetAIJ">MatKAIJSetAIJ</A>(), <A HREF="../Mat/MatKAIJSetS.html#MatKAIJSetS">MatKAIJSetS</A>(), <A HREF="../Mat/MatKAIJSetT.html#MatKAIJSetT">MatKAIJSetT</A>(), <A HREF="../Mat/MatKAIJGetAIJ.html#MatKAIJGetAIJ">MatKAIJGetAIJ</A>(), <A HREF="../Mat/MatKAIJGetS.html#MatKAIJGetS">MatKAIJGetS</A>(), <A HREF="../Mat/MatKAIJGetT.html#MatKAIJGetT">MatKAIJGetT</A>(), <A HREF="../Mat/MatCreateKAIJ.html#MatCreateKAIJ">MatCreateKAIJ</A>()
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>advanced<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/mat/impls/kaij/kaij.c.html#MATKAIJ">src/mat/impls/kaij/kaij.c</A>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/ksp/ksp/tutorials/ex74.c.html">src/ksp/ksp/tutorials/ex74.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/tutorials/ex77.c.html">src/ksp/ksp/tutorials/ex77.c.html</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>
|
