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<H2><A NAME="SECTION04534000000000000000">Determine Whether Reasonable Performance Is Achieved</A></H2>
<P>
This chapter contains
performance results for
some ScaLAPACK drivers
on a range of different
platforms.
We recommend
that users compare their performance
results against the ones presented in the previous tables.
For those users whose computer is not listed,
the BLAS timing program [<A HREF="node189.html#laug">3</A>] and
the message-passing benchmark program [<A HREF="node189.html#dunigan96a">46</A>]
can be used to estimate
the values of <IMG WIDTH=39 HEIGHT=25 ALIGN=MIDDLE ALT="tex2html_wrap_inline12088" SRC="img9.gif">, <IMG WIDTH=18 HEIGHT=23 ALIGN=MIDDLE ALT="tex2html_wrap_inline12208" SRC="img30.gif"> and <IMG WIDTH=12 HEIGHT=23 ALIGN=MIDDLE ALT="tex2html_wrap_inline12228" SRC="img35.gif">
for a specific computer.
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The execution time can
then be estimated by
using the material
presented in the
previous section.
<P>
If this chapter
does not contain
performance
data for the
ScaLAPACK routine
a user is using, we
recommend verifying the
performance
with one of the drivers
whose performance is presented
in this chapter.
The publicly available
ScaLAPACK distribution
contains timing programs
for each driver.
This performance sanity
check should convince
the user not only that the
library has been
correctly installed,
but also that it is being used
properly.
Users may also
send
questions, suggestions,
or comments regarding
ScaLAPACK performance
issues to
<TT>scalapack@cs.utk.edu</TT>.
<P>
<BR> <HR>
<P><ADDRESS>
<I>Susan Blackford <BR>
Tue May 13 09:21:01 EDT 1997</I>
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