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<H1><A NAME="SECTION04540000000000000000">Performance Improvement</A></H1>
<A NAME="secperfimprovement"> </A>
<A NAME="4245"> </A>
<P>
Before experimenting with different data layouts, users should make sure that
they are using the fastest BLACS and BLAS libraries.
<P>
Three major
factors influence
the performance of a
ScaLAPACK routine: the
flop rate achieved by
the BLAS on each node,
the computational
load balance, and
the communication costs.
<P>
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<UL><A NAME="CHILD_LINKS"> </A>
<LI> <A NAME="tex2html3799" HREF="node128.html#SECTION04541000000000000000">Choosing a Faster BLACS Library</A>
<LI> <A NAME="tex2html3800" HREF="node129.html#SECTION04542000000000000000">Choosing a Faster BLAS Library</A>
<LI> <A NAME="tex2html3801" HREF="node130.html#SECTION04543000000000000000">Tuning the Distribution Parameters for Better Performance</A>
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<P><ADDRESS>
<I>Susan Blackford <BR>
Tue May 13 09:21:01 EDT 1997</I>
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