Looking for references on Beowulf performance for undergrad paper

[Matt Osborne]

Hi, writing a paper on Beowulf's and the performance benefits gained from
such a system. Looking for information on the performance increase from 1
to x nodes and the difference in performance of some code running on the
Beowulf to the code on a single processor. Any help appreciated! =]

Regards,
Matt Osborne
Electrical/Computer Engineering
Christian Brothers University
Memphis, Tennessee