The Spidergon STNoC

Abstract

Spidergon STNoC is a state-of-the-art, low-cost on-chip interconnect that plays a vital role in enabling multiprocessor system-on-chip by providing structure, performance, and modularity. This chapter outlines topological and routing characteristics of the packet-switched Spidergon STNoC, focusing on its low diameter, vertex-symmetric, point-to-point chordal ring topology, and its low-cost, efficient deterministic, shortest-path routing algorithm. It also describes interesting design tools and discusses new Spidergon extensions toward fault tolerant routing.