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<div id="version" align=right><b>petsc-3.10.3 2018-12-18</b></div>
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<A NAME="MatLMVMSetJ0"><H1>MatLMVMSetJ0</H1></A>
Allows the user to define the initial Jacobian matrix from which the LMVM approximation is built up. Inverse of this initial Jacobian is applied using an internal <A HREF="../KSP/KSP.html#KSP">KSP</A> solver, which defaults to GMRES. This internal <A HREF="../KSP/KSP.html#KSP">KSP</A> solver has the "mat_lmvm_" option prefix.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscksp.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../KSP/MatLMVMSetJ0.html#MatLMVMSetJ0">MatLMVMSetJ0</A>(<A HREF="../Mat/Mat.html#Mat">Mat</A> B, <A HREF="../Mat/Mat.html#Mat">Mat</A> J0)
</PRE>
Note that another LMVM matrix can be used in place of
J0, in which case updating the outer LMVM matrix will
also trigger the update for the inner LMVM matrix. This
is useful in cases where a full-memory diagonal approximation
such as MATLMVMDIAGBRDN is used in place of J0.
<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>B </B></TD><TD>- An LMVM-type matrix
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>J0 </B></TD><TD>- The initial Jacobian matrix
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../KSP/MatLMVMSetJ0PC.html#MatLMVMSetJ0PC">MatLMVMSetJ0PC</A>(), <A HREF="../KSP/MatLMVMSetJ0KSP.html#MatLMVMSetJ0KSP">MatLMVMSetJ0KSP</A>()
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>advanced<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/ksp/ksp/utils/lmvm/lmvmutils.c.html#MatLMVMSetJ0">src/ksp/ksp/utils/lmvm/lmvmutils.c</A>
<BR><A HREF="./index.html">Index of all KSP routines</A>
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