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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
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<TITLE>PCSetFromOptions</TITLE>
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<div id="version" align=right><b>petsc-3.10.3 2018-12-18</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-3.10.3 v3.10.3 docs/manualpages/PC/PCSetFromOptions.html "><small>Report Typos and Errors</small></a></div>
<A NAME="PCSetFromOptions"><H1>PCSetFromOptions</H1></A>
Sets <A HREF="../PC/PC.html#PC">PC</A> options from the options database. This routine must be called before <A HREF="../PC/PCSetUp.html#PCSetUp">PCSetUp</A>() if the user is to be allowed to set the preconditioner method.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscpc.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../PC/PCSetFromOptions.html#PCSetFromOptions">PCSetFromOptions</A>(<A HREF="../PC/PC.html#PC">PC</A> pc)
</PRE>
Collective on <A HREF="../PC/PC.html#PC">PC</A>
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<DT><B>pc </B> -the preconditioner context
<br>
<P>
<H3><FONT COLOR="#CC3333">Options Database</FONT></H3>
<DT><B>-pc_use_amat true,false see <A HREF="../PC/PCSetUseAmat.html#PCSetUseAmat">PCSetUseAmat</A>()</B> -
<br>
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
<A HREF="../PC/PC.html#PC">PC</A>, set, from, options, database
<BR>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../PC/PCSetUseAmat.html#PCSetUseAmat">PCSetUseAmat</A>()
<BR>
<P>
<P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>developer<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/ksp/pc/interface/pcset.c.html#PCSetFromOptions">src/ksp/pc/interface/pcset.c</A>
<P><H3><FONT COLOR="CC3333">Implementations</FONT></H3><A HREF="../../../src/ksp/pc/impls/asm/asm.c.html#PCSetFromOptions_ASM">PCSetFromOptions_ASM in src/ksp/pc/impls/asm/asm.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/bddc/bddc.c.html#PCSetFromOptions_BDDC">PCSetFromOptions_BDDC in src/ksp/pc/impls/bddc/bddc.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/bjacobi/bjacobi.c.html#PCSetFromOptions_BJacobi">PCSetFromOptions_BJacobi in src/ksp/pc/impls/bjacobi/bjacobi.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/chowiluviennacl/chowiluviennacl.cxx.html#PCSetFromOptions_CHOWILUVIENNACL">PCSetFromOptions_CHOWILUVIENNACL in src/ksp/pc/impls/chowiluviennacl/chowiluviennacl.cxx</A><BR>
<A HREF="../../../src/ksp/pc/impls/composite/composite.c.html#PCSetFromOptions_Composite">PCSetFromOptions_Composite in src/ksp/pc/impls/composite/composite.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/cp/cp.c.html#PCSetFromOptions_CP">PCSetFromOptions_CP in src/ksp/pc/impls/cp/cp.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/eisens/eisen.c.html#PCSetFromOptions_Eisenstat">PCSetFromOptions_Eisenstat in src/ksp/pc/impls/eisens/eisen.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/factor/cholesky/cholesky.c.html#PCSetFromOptions_Cholesky">PCSetFromOptions_Cholesky in src/ksp/pc/impls/factor/cholesky/cholesky.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/factor/factimpl.c.html#PCSetFromOptions_Factor">PCSetFromOptions_Factor in src/ksp/pc/impls/factor/factimpl.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/factor/icc/icc.c.html#PCSetFromOptions_ICC">PCSetFromOptions_ICC in src/ksp/pc/impls/factor/icc/icc.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/factor/ilu/ilu.c.html#PCSetFromOptions_ILU">PCSetFromOptions_ILU in src/ksp/pc/impls/factor/ilu/ilu.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/factor/lu/lu.c.html#PCSetFromOptions_LU">PCSetFromOptions_LU in src/ksp/pc/impls/factor/lu/lu.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/fieldsplit/fieldsplit.c.html#PCSetFromOptions_FieldSplit">PCSetFromOptions_FieldSplit in src/ksp/pc/impls/fieldsplit/fieldsplit.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/galerkin/galerkin.c.html#PCSetFromOptions_Galerkin">PCSetFromOptions_Galerkin in src/ksp/pc/impls/galerkin/galerkin.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/gamg/agg.c.html#PCSetFromOptions_GAMG_AGG">PCSetFromOptions_GAMG_AGG in src/ksp/pc/impls/gamg/agg.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/gamg/gamg.c.html#PCSetFromOptions_GAMG">PCSetFromOptions_GAMG in src/ksp/pc/impls/gamg/gamg.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/gamg/geo.c.html#PCSetFromOptions_GEO">PCSetFromOptions_GEO in src/ksp/pc/impls/gamg/geo.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/gasm/gasm.c.html#PCSetFromOptions_GASM">PCSetFromOptions_GASM in src/ksp/pc/impls/gasm/gasm.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/hypre/hypre.c.html#PCSetFromOptions_HYPRE_Pilut">PCSetFromOptions_HYPRE_Pilut in src/ksp/pc/impls/hypre/hypre.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/hypre/hypre.c.html#PCSetFromOptions_HYPRE_BoomerAMG">PCSetFromOptions_HYPRE_BoomerAMG in src/ksp/pc/impls/hypre/hypre.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/hypre/hypre.c.html#PCSetFromOptions_HYPRE_ParaSails">PCSetFromOptions_HYPRE_ParaSails in src/ksp/pc/impls/hypre/hypre.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/hypre/hypre.c.html#PCSetFromOptions_HYPRE_AMS">PCSetFromOptions_HYPRE_AMS in src/ksp/pc/impls/hypre/hypre.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/hypre/hypre.c.html#PCSetFromOptions_HYPRE_ADS">PCSetFromOptions_HYPRE_ADS in src/ksp/pc/impls/hypre/hypre.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/hypre/hypre.c.html#PCSetFromOptions_HYPRE">PCSetFromOptions_HYPRE in src/ksp/pc/impls/hypre/hypre.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/hypre/hypre.c.html#PCSetFromOptions_PFMG">PCSetFromOptions_PFMG in src/ksp/pc/impls/hypre/hypre.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/hypre/hypre.c.html#PCSetFromOptions_SysPFMG">PCSetFromOptions_SysPFMG in src/ksp/pc/impls/hypre/hypre.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/jacobi/jacobi.c.html#PCSetFromOptions_Jacobi">PCSetFromOptions_Jacobi in src/ksp/pc/impls/jacobi/jacobi.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/kaczmarz/kaczmarz.c.html#PCSetFromOptions_Kaczmarz">PCSetFromOptions_Kaczmarz in src/ksp/pc/impls/kaczmarz/kaczmarz.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/ksp/pcksp.c.html#PCSetFromOptions_KSP">PCSetFromOptions_KSP in src/ksp/pc/impls/ksp/pcksp.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/lmvm/lmvmpc.c.html#PCSetFromOptions_LMVM">PCSetFromOptions_LMVM in src/ksp/pc/impls/lmvm/lmvmpc.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/lsc/lsc.c.html#PCSetFromOptions_LSC">PCSetFromOptions_LSC in src/ksp/pc/impls/lsc/lsc.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/mg/mg.c.html#PCSetFromOptions_MG">PCSetFromOptions_MG in src/ksp/pc/impls/mg/mg.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/ml/ml.c.html#PCSetFromOptions_ML">PCSetFromOptions_ML in src/ksp/pc/impls/ml/ml.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/parms/parms.c.html#PCSetFromOptions_PARMS">PCSetFromOptions_PARMS in src/ksp/pc/impls/parms/parms.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/patch/pcpatch.c.html#PCSetFromOptions_PATCH">PCSetFromOptions_PATCH in src/ksp/pc/impls/patch/pcpatch.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/redistribute/redistribute.c.html#PCSetFromOptions_Redistribute">PCSetFromOptions_Redistribute in src/ksp/pc/impls/redistribute/redistribute.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/redundant/redundant.c.html#PCSetFromOptions_Redundant">PCSetFromOptions_Redundant in src/ksp/pc/impls/redundant/redundant.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/rowscalingviennacl/rowscalingviennacl.cxx.html#PCSetFromOptions_ROWSCALINGVIENNACL">PCSetFromOptions_ROWSCALINGVIENNACL in src/ksp/pc/impls/rowscalingviennacl/rowscalingviennacl.cxx</A><BR>
<A HREF="../../../src/ksp/pc/impls/saviennacl/saviennacl.cxx.html#PCSetFromOptions_SAVIENNACL">PCSetFromOptions_SAVIENNACL in src/ksp/pc/impls/saviennacl/saviennacl.cxx</A><BR>
<A HREF="../../../src/ksp/pc/impls/sor/sor.c.html#PCSetFromOptions_SOR">PCSetFromOptions_SOR in src/ksp/pc/impls/sor/sor.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/spai/ispai.c.html#PCSetFromOptions_SPAI">PCSetFromOptions_SPAI in src/ksp/pc/impls/spai/ispai.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/svd/svd.c.html#PCSetFromOptions_SVD">PCSetFromOptions_SVD in src/ksp/pc/impls/svd/svd.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/telescope/telescope.c.html#PCSetFromOptions_Telescope">PCSetFromOptions_Telescope in src/ksp/pc/impls/telescope/telescope.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/tfs/tfs.c.html#PCSetFromOptions_TFS">PCSetFromOptions_TFS in src/ksp/pc/impls/tfs/tfs.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/wb/wb.c.html#PCSetFromOptions_Exotic">PCSetFromOptions_Exotic in src/ksp/pc/impls/wb/wb.c</A><BR>
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