Concentration and Its Impact on Mesh and Torus-Based NoC Performance

Abstract

This paper investigates the effects of concentration on the performance of k-ary n-cubes. Simulation results indicate that only large ratios of packet length-to-average hop-count are in favor of concentrated mesh and torus. The Cmesh takes full advantage of its high channel bandwidth to outperform Ctorus. Moreover, non-local traffic suffers more from performance bottleneck than local traffic at routers. Providing dedicated input ports, one for each IP, at routers, reduces the average packet latency compared to a configuration with a single input port shared by all IP cores of the cluster.