A digital computer having a plurality of message generating elements each generating and receiving messages and a network for transferring messages among the message generating elements. The network includes a plurality of node clusters interconnected in a tree pattern from a lower leaf level to an upper...http://www.google.de/patents/US5353412?utm_source=gb-gplus-sharePatent US5353412 - Partition control circuit for separately controlling message sending of nodes of tree-shaped routing network to divide the network into a number of partitions
