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<div id="version" align=right><b>slepc-3.14.2 2021-02-01</b></div>
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<H1>EPSJDSetInitialSize</H1>
Sets the initial size of the searching space.
<H3><FONT COLOR="#883300">Synopsis</FONT></H3>
<PRE>
#include "slepceps.h"
PetscErrorCode <A HREF="../EPS/EPSJDSetInitialSize.html#EPSJDSetInitialSize">EPSJDSetInitialSize</A>(<A HREF="../EPS/EPS.html#EPS">EPS</A> eps,PetscInt initialsize)
</PRE>
Logically Collective on eps
<P>
<H3><FONT COLOR="#883300">Input Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>eps </B></TD><TD> - the eigenproblem solver context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>initialsize </B></TD><TD> - number of vectors of the initial searching subspace
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Options Database Key</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-eps_jd_initial_size </B></TD><TD> - number of vectors of the initial searching subspace
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Notes</FONT></H3>
If <A HREF="../EPS/EPSJDGetKrylovStart.html#EPSJDGetKrylovStart">EPSJDGetKrylovStart</A>() is PETSC_FALSE and the user provides vectors with
<A HREF="../EPS/EPSSetInitialSpace.html#EPSSetInitialSpace">EPSSetInitialSpace</A>(), up to initialsize vectors will be used; and if the
provided vectors are not enough, the solver completes the subspace with
random vectors. In the case of <A HREF="../EPS/EPSJDGetKrylovStart.html#EPSJDGetKrylovStart">EPSJDGetKrylovStart</A>() being PETSC_TRUE, the solver
gets the first vector provided by the user or, if not available, a random vector,
and expands the Krylov basis up to initialsize vectors.
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../EPS/EPSJDGetInitialSize.html#EPSJDGetInitialSize">EPSJDGetInitialSize</A>(), <A HREF="../EPS/EPSJDGetKrylovStart.html#EPSJDGetKrylovStart">EPSJDGetKrylovStart</A>()
<BR><P><B><FONT COLOR="#883300">Location: </FONT></B><A HREF="../../../src/eps/impls/davidson/jd/jd.c.html#EPSJDSetInitialSize">src/eps/impls/davidson/jd/jd.c</A>
<BR><A HREF="./index.html">Index of all EPS routines</A>
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