A broadcast algorithm for all-port wormhole-routed torus networks

A new approach to broadcast in wormhole-routed two- and three-dimensional torus networks is proposed. The approach extends the concept of dominating sets from graph theory by accounting for the relative distance-insensitivity of the wormhole routing switching strategy and by taking advantage of an allport communication architecture. The resulting broadcast operation is based on a tree structure that uses multiple levels of extended dominating nodes (EDN). Performance results are presented that confirm the advantage of this method over recursive doubling