Clusterized Code Description

The pvm standard form has all nodes exposed to the network and any node can directly communicate with another node. The clusterized version permits a cluster (group of nodes) to be on a private network and not exposed to the general net - it then has a node or group of nodes that are dual-ported with multiple network cards - one to the internal net and the other to the external net. This machine then acts as a portal through which communication is routed to the cluster nodes not exposed to the general net. It is similar to ip masquerading techniques. The physical configuration of the nics does not matter - clusterized refers to the nodes not being exposed to the public net.