Beowolf Clusters
Beowulf
opensource parallel computing from NASA.
Beowulf Underground
Internet Parallel Computing Archive
MOSIX for Linux
set of enhancements that transform a cluster of PC"s into a scalable super-multicomputer.
The Oak Ridge Extreme Linux Page
resources for Beowulf cluster builders and programmers.
Tina
self-made super-computer built out of commodity hardware components, running Linux, at the Institute of Theoretical Physics, Magdeburg.