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<div id="version" align=right><b>slepc-3.14.2 2021-02-01</b></div>
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<H1>EPSPRIMMESetBlockSize</H1>
The maximum block size that PRIMME will try to use.
<H3><FONT COLOR="#883300">Synopsis</FONT></H3>
<PRE>
#include "slepceps.h"
PetscErrorCode <A HREF="../EPS/EPSPRIMMESetBlockSize.html#EPSPRIMMESetBlockSize">EPSPRIMMESetBlockSize</A>(<A HREF="../EPS/EPS.html#EPS">EPS</A> eps,PetscInt bs)
</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>bs </B></TD><TD> - block size
</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_primme_blocksize </B></TD><TD> - Sets the max allowed block size value
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Notes</FONT></H3>
If the block size is not set, the value established by primme_initialize
is used.
<P>
The user should set the block size based on the architecture specifics
of the target computer, as well as any a priori knowledge of multiplicities.
The code does NOT require bs > 1 to find multiple eigenvalues. For some
methods, keeping bs = 1 yields the best overall performance.
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../EPS/EPSPRIMMEGetBlockSize.html#EPSPRIMMEGetBlockSize">EPSPRIMMEGetBlockSize</A>()
<BR><P><B><FONT COLOR="#883300">Location: </FONT></B><A HREF="../../../src/eps/impls/external/primme/primme.c.html#EPSPRIMMESetBlockSize">src/eps/impls/external/primme/primme.c</A>
<BR><A HREF="./index.html">Index of all EPS routines</A>
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