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
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
<HTML>
<HEAD>
<META NAME="GENERATOR" CONTENT="DOCTEXT">
<TITLE>PCREDISTRIBUTE</TITLE>
</HEAD>
<BODY BGCOLOR="FFFFFF">
<A NAME="PCREDISTRIBUTE"><H1>PCREDISTRIBUTE</H1></A>
Redistributes a matrix for load balancing, removing the rows that only have a diagonal entry and then applys a <A HREF="../KSP/KSP.html#KSP">KSP</A> to that new matrix Options for the redistribute preconditioners can be set with -redistribute_ksp_xxx <values> and -redistribute_pc_xxx <values>
<P>
Notes: Usually run this with -ksp_type preonly
<P>
If you have used <A HREF="../Mat/MatZeroRows.html#MatZeroRows">MatZeroRows</A>() to eliminate (for example, Dirichlet) boundary conditions for a symmetric problem then you can use, for example, -ksp_type preonly
-pc_type redistribute -redistribute_ksp_type cg -redistribute_pc_type bjacobi -redistribute_sub_pc_type icc to take advantage of the symmetry.
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../PC/PCCreate.html#PCCreate">PCCreate</A>(), <A HREF="../PC/PCSetType.html#PCSetType">PCSetType</A>(), <A HREF="../PC/PCType.html#PCType">PCType</A> (for list of available types), <A HREF="../PC/PCRedistributeGetKSP.html#PCRedistributeGetKSP">PCRedistributeGetKSP</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>intermediate
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/ksp/pc/impls/redistribute/redistribute.c.html#PCREDISTRIBUTE">src/ksp/pc/impls/redistribute/redistribute.c</A>
<BR><A HREF="./index.html">Index of all PC 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>
|