MOSIX Cluster and Multi-Cluster Operating System
MOSIX is a management system targeted for high performance computing on Linux clusters and multi-clusters. It supports both interactive processes and batch jobs.
In MOSIX there is no need to modify or link applications with any library, copy files or login to remote nodes, or even assign processes to different nodes. It is all done automatically, similar to a single computer with multiple processors - just fork and forget.
More information: www.mosix.org