Improving Routing Efficiency for Networks-on-Chip through an Efficient Input Selection Strategy

摘要

The choice of selection function has a significant effect on the average packet latency and saturation behavior of networks-on-chip (NoCs). As known, each packet may hold several virtual channel (vc) resources which span multiple routers in the network. These virtual channels constitute a vc chain to the packet. Through observation, we find that the length of the vc chain in the network plays an important role in the performance of an NoC, and it helps to improve the performance of the network to cut short the vc chains. In this paper, we present a simple and efficient input selection function (ISF) based on a brand new priority. The novel ISF cuts down packet latency, simultaneously making more efficient use of resources, and hence boosting throughput. The simulation results show the effectiveness of the new ISF by comparing with other ISFs.