If anyone wants to run a beowulfe cluster using a bunch of SBUS-based UNIX-boxes, this is a great way to start. It comes with 5 adapters... http://cgi.ebay.com/Lot-of-5-Dolphin-SBus-SCI-SPARC-Cluster-Adapter-Cards_W0 QQitemZ5803708439QQcategoryZ3668QQrdZ1QQcmdZViewItem You can download MPI for Solaris which supports this (get ClusterTools for Solaris from SUN).... Ram