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<TITLE>PCType</TITLE>
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<div id="version" align=right><b>petsc-3.7.5 2017-01-01</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-3.7.5 v3.7.5 docs/manualpages/PC/PCType.html "><small>Report Typos and Errors</small></a></div>
<A NAME="PCType"><H1>PCType</H1></A>
String with the name of a PETSc preconditioner method.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
typedef const char* <A HREF="../PC/PCType.html#PCType">PCType</A>;
#define <A HREF="../PC/PCNONE.html#PCNONE">PCNONE</A> "none"
#define <A HREF="../PC/PCJACOBI.html#PCJACOBI">PCJACOBI</A> "jacobi"
#define <A HREF="../PC/PCSOR.html#PCSOR">PCSOR</A> "sor"
#define <A HREF="../PC/PCLU.html#PCLU">PCLU</A> "lu"
#define <A HREF="../PC/PCSHELL.html#PCSHELL">PCSHELL</A> "shell"
#define <A HREF="../PC/PCBJACOBI.html#PCBJACOBI">PCBJACOBI</A> "bjacobi"
#define <A HREF="../PC/PCMG.html#PCMG">PCMG</A> "mg"
#define <A HREF="../PC/PCEISENSTAT.html#PCEISENSTAT">PCEISENSTAT</A> "eisenstat"
#define <A HREF="../PC/PCILU.html#PCILU">PCILU</A> "ilu"
#define <A HREF="../PC/PCICC.html#PCICC">PCICC</A> "icc"
#define <A HREF="../PC/PCASM.html#PCASM">PCASM</A> "asm"
#define <A HREF="../PC/PCGASM.html#PCGASM">PCGASM</A> "gasm"
#define <A HREF="../PC/PCKSP.html#PCKSP">PCKSP</A> "ksp"
#define <A HREF="../PC/PCCOMPOSITE.html#PCCOMPOSITE">PCCOMPOSITE</A> "composite"
#define <A HREF="../PC/PCREDUNDANT.html#PCREDUNDANT">PCREDUNDANT</A> "redundant"
#define <A HREF="../PC/PCSPAI.html#PCSPAI">PCSPAI</A> "spai"
#define <A HREF="../PC/PCNN.html#PCNN">PCNN</A> "nn"
#define <A HREF="../PC/PCCHOLESKY.html#PCCHOLESKY">PCCHOLESKY</A> "cholesky"
#define <A HREF="../PC/PCPBJACOBI.html#PCPBJACOBI">PCPBJACOBI</A> "pbjacobi"
#define <A HREF="../PC/PCMAT.html#PCMAT">PCMAT</A> "mat"
#define <A HREF="../PC/PCHYPRE.html#PCHYPRE">PCHYPRE</A> "hypre"
#define <A HREF="../PC/PCPARMS.html#PCPARMS">PCPARMS</A> "parms"
#define <A HREF="../PC/PCFIELDSPLIT.html#PCFIELDSPLIT">PCFIELDSPLIT</A> "fieldsplit"
#define <A HREF="../PC/PCTFS.html#PCTFS">PCTFS</A> "tfs"
#define <A HREF="../PC/PCML.html#PCML">PCML</A> "ml"
#define <A HREF="../PC/PCGALERKIN.html#PCGALERKIN">PCGALERKIN</A> "galerkin"
#define <A HREF="../PC/PCEXOTIC.html#PCEXOTIC">PCEXOTIC</A> "exotic"
#define <A HREF="../PC/PCCP.html#PCCP">PCCP</A> "cp"
#define PCBFBT "bfbt"
#define <A HREF="../PC/PCLSC.html#PCLSC">PCLSC</A> "lsc"
#define PCPYTHON "python"
#define <A HREF="../PC/PCPFMG.html#PCPFMG">PCPFMG</A> "pfmg"
#define PCSYSPFMG "syspfmg"
#define <A HREF="../PC/PCREDISTRIBUTE.html#PCREDISTRIBUTE">PCREDISTRIBUTE</A> "redistribute"
#define <A HREF="../PC/PCSVD.html#PCSVD">PCSVD</A> "svd"
#define <A HREF="../PC/PCGAMG.html#PCGAMG">PCGAMG</A> "gamg"
#define <A HREF="../PC/PCSACUSP.html#PCSACUSP">PCSACUSP</A> "sacusp" /* these four run on NVIDIA GPUs using CUSP */
#define PCSACUSPPOLY "sacusppoly"
#define PCBICGSTABCUSP "bicgstabcusp"
#define <A HREF="../PC/PCAINVCUSP.html#PCAINVCUSP">PCAINVCUSP</A> "ainvcusp"
#define <A HREF="../PC/PCBDDC.html#PCBDDC">PCBDDC</A> "bddc"
#define PCKACZMARZ "kaczmarz"
#define <A HREF="../PC/PCTELESCOPE.html#PCTELESCOPE">PCTELESCOPE</A> "telescope"
</PRE>
<P>
Notes: Click on the links below to see details on a particular solver
<P>
<A HREF="../PC/PCRegister.html#PCRegister">PCRegister</A>() is used to register preconditioners that are then accessible via <A HREF="../PC/PCSetType.html#PCSetType">PCSetType</A>()
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../PC/PCSetType.html#PCSetType">PCSetType</A>(), <A HREF="../PC/PC.html#PC">PC</A>, <A HREF="../PC/PCCreate.html#PCCreate">PCCreate</A>(), <A HREF="../PC/PCRegister.html#PCRegister">PCRegister</A>(), <A HREF="../PC/PCSetFromOptions.html#PCSetFromOptions">PCSetFromOptions</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>beginner
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/ksp/pc/../../../include/petscpctypes.h.html#PCType">src/ksp/pc/../../../include/petscpctypes.h</A>
<BR><A HREF="./index.html">Index of all PC routines</A>
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