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<TITLE>MatFactorSetSchurIS</TITLE>
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<div id="version" align=right><b>petsc-3.14.5 2021-03-03</b></div>
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<A NAME="MatFactorSetSchurIS"><H1>MatFactorSetSchurIS</H1></A>
Set indices corresponding to the Schur complement you wish to have computed
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscmat.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../Mat/MatFactorSetSchurIS.html#MatFactorSetSchurIS">MatFactorSetSchurIS</A>(<A HREF="../Mat/Mat.html#Mat">Mat</A> mat,<A HREF="../IS/IS.html#IS">IS</A> is)
</PRE>
Collective on <A HREF="../Mat/Mat.html#Mat">Mat</A>
<P>
<H3><FONT COLOR="#CC3333">Input Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>mat </B></TD><TD>- the factored matrix
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>is </B></TD><TD>- the index set defining the Schur indices (0-based)
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
Call <A HREF="../Mat/MatFactorSolveSchurComplement.html#MatFactorSolveSchurComplement">MatFactorSolveSchurComplement</A>() or <A HREF="../Mat/MatFactorSolveSchurComplementTranspose.html#MatFactorSolveSchurComplementTranspose">MatFactorSolveSchurComplementTranspose</A>() after this call to solve a Schur complement system.
<P>
You can call <A HREF="../Mat/MatFactorGetSchurComplement.html#MatFactorGetSchurComplement">MatFactorGetSchurComplement</A>() or <A HREF="../Mat/MatFactorCreateSchurComplement.html#MatFactorCreateSchurComplement">MatFactorCreateSchurComplement</A>() after this call.
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Mat/MatGetFactor.html#MatGetFactor">MatGetFactor</A>(), <A HREF="../Mat/MatFactorGetSchurComplement.html#MatFactorGetSchurComplement">MatFactorGetSchurComplement</A>(), <A HREF="../Mat/MatFactorRestoreSchurComplement.html#MatFactorRestoreSchurComplement">MatFactorRestoreSchurComplement</A>(), <A HREF="../Mat/MatFactorCreateSchurComplement.html#MatFactorCreateSchurComplement">MatFactorCreateSchurComplement</A>(), <A HREF="../Mat/MatFactorSolveSchurComplement.html#MatFactorSolveSchurComplement">MatFactorSolveSchurComplement</A>(),
<BR><A HREF="../Mat/MatFactorSolveSchurComplementTranspose.html#MatFactorSolveSchurComplementTranspose">MatFactorSolveSchurComplementTranspose</A>(), <A HREF="../Mat/MatFactorSolveSchurComplement.html#MatFactorSolveSchurComplement">MatFactorSolveSchurComplement</A>()
<P>
<P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>developer<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/mat/interface/matrix.c.html#MatFactorSetSchurIS">src/mat/interface/matrix.c</A>
<P><H3><FONT COLOR="CC3333">Implementations</FONT></H3><A HREF="../../../src/mat/impls/aij/mpi/mumps/mumps.c.html#MatFactorSetSchurIS_MUMPS">MatFactorSetSchurIS_MUMPS in src/mat/impls/aij/mpi/mumps/mumps.c</A><BR>
<A HREF="../../../src/mat/impls/aij/seq/mkl_pardiso/mkl_pardiso.c.html#MatFactorSetSchurIS_MKL_PARDISO">MatFactorSetSchurIS_MKL_PARDISO in src/mat/impls/aij/seq/mkl_pardiso/mkl_pardiso.c</A><BR>
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