File: MAT_SOLVER_UMFPACK.html

package info (click to toggle)
petsc 3.1.dfsg-7
  • links: PTS, VCS
  • area: main
  • in suites: squeeze
  • size: 131,360 kB
  • ctags: 491,710
  • sloc: ansic: 288,064; cpp: 66,909; python: 28,799; fortran: 19,153; makefile: 13,945; sh: 3,502; f90: 1,655; xml: 620; csh: 230; java: 13
file content (44 lines) | stat: -rw-r--r-- 3,558 bytes parent folder | download 
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
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
<HTML>
<HEAD>
<META NAME="GENERATOR" CONTENT="DOCTEXT">
<TITLE>MAT_SOLVER_UMFPACK</TITLE>
</HEAD>
<BODY BGCOLOR="FFFFFF">
<A NAME="MAT_SOLVER_UMFPACK"><H1>MAT_SOLVER_UMFPACK</H1></A>
"umfpack" - A matrix type providing direct solvers (LU) for sequential matrices  via the external package UMFPACK. config/configure.py --download-umfpack to install PETSc to use UMFPACK
<P>
Consult UMFPACK documentation for more information about the Control parameters
which correspond to the options database keys below.
<P>
<H3><FONT COLOR="#CC3333">Options Database Keys</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_umfpack_prl </B></TD><TD>- UMFPACK print level: Control[UMFPACK_PRL]
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_umfpack_strategy &lt;AUTO&gt; (choose one of) AUTO UNSYMMETRIC SYMMETRIC 2BY2</B></TD><TD>- . -mat_umfpack_dense_col &lt;alpha_c&gt; - UMFPACK dense column threshold: Control[UMFPACK_DENSE_COL]
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_umfpack_dense_row &lt;0.2&gt;: Control[UMFPACK_DENSE_ROW] </B></TD><TD>- . -mat_umfpack_amd_dense &lt;10&gt;: Control[UMFPACK_AMD_DENSE] 
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_umfpack_block_size &lt;bs&gt; </B></TD><TD>- UMFPACK block size for BLAS-Level 3 calls: Control[UMFPACK_BLOCK_SIZE]
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_umfpack_2by2_tolerance &lt;0.01&gt;: Control[UMFPACK_2BY2_TOLERANCE] </B></TD><TD>- . -mat_umfpack_fixq &lt;0&gt;: Control[UMFPACK_FIXQ] 
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_umfpack_aggressive &lt;1&gt;: Control[UMFPACK_AGGRESSIVE] </B></TD><TD>- . -mat_umfpack_pivot_tolerance &lt;delta&gt; - UMFPACK partial pivot tolerance: Control[UMFPACK_PIVOT_TOLERANCE]
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_umfpack_sym_pivot_tolerance &lt;0.001&gt;: Control[UMFPACK_SYM_PIVOT_TOLERANCE] </B></TD><TD>- .  -mat_umfpack_scale &lt;NONE&gt; (choose one of) NONE SUM MAX
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_umfpack_alloc_init &lt;delta&gt; </B></TD><TD>- UMFPACK factorized matrix allocation modifier: Control[UMFPACK_ALLOC_INIT]
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-mat_umfpack_droptol &lt;0&gt;: Control[UMFPACK_DROPTOL] </B></TD><TD>- - -mat_umfpack_irstep &lt;maxit&gt; - UMFPACK maximum number of iterative refinement steps: Control[UMFPACK_IRSTEP]
</TD></TR>
<P>

<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
 <A HREF="../PC/PCLU.html#PCLU">PCLU</A>, <A HREF="../Mat/MAT_SOLVER_SUPERLU.html#MAT_SOLVER_SUPERLU">MAT_SOLVER_SUPERLU</A>, <A HREF="../Mat/MAT_SOLVER_MUMPS.html#MAT_SOLVER_MUMPS">MAT_SOLVER_MUMPS</A>, <A HREF="../Mat/MAT_SOLVER_SPOOLES.html#MAT_SOLVER_SPOOLES">MAT_SOLVER_SPOOLES</A>, <A HREF="../PC/PCFactorSetMatSolverPackage.html#PCFactorSetMatSolverPackage">PCFactorSetMatSolverPackage</A>(), <A HREF="../Mat/MatSolverPackage.html#MatSolverPackage">MatSolverPackage</A>
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>beginner
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/mat/impls/aij/seq/umfpack/umfpack.c.html#MAT_SOLVER_UMFPACK">src/mat/impls/aij/seq/umfpack/umfpack.c</A>
<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>