http://kldp.org/Translations/html/Cluster_QuickStart-KLDP/Cluster_QuickStart-KLDP.html#toc14
http://www.lam-mpi.org/
http://www.phyast.pitt.edu/beowulf/
http://kldp.org/HOWTO/html/Beowulf/Beowulf-HOWTO.html#toc6
http://kldp.org/HOWTO/html/Parallel-Processing/Parallel-Processing-HOWTO.html#toc3