低延迟路由器中高效开关分配机制的实现与评测

开关分配位于片上网络路由器流水线的关键路径上,对路由器以至整个片上网络的性能都会产生很大影响.已有的开关分配方法主要针对标准流水线路由器进行分析改进,缺乏对低延迟路由器中基于时间序列的开关分配方法的研究.本文首次在低延迟路由器上实现了基于时间序列的开关分配机制,并针对分配过程中优先矩阵的构造特点进行了优化改进.仿真实验结果表明在低延迟路由器中采用基于时间序列的开关分配策略可以使片上网络的性能得到很大提升.

Design and Implementation of Efficient Switching in Low-latency Router

Switch allocation is a critical stage of router pipelines for On-Chip Networks, whose performance influences the overall performance of a router and even the whole NoC greatly. However, the existing time-series based switch allocation mainly is considered in canonical five-pipeline router architecture, and the researching in low-latency router is absent. So this paper made the first attempt to implement the time-series based switch allocation in low-latency router, and made improvement based on the construction features of priority matrixes in switch allocating. Simulation experiments results show that the combining time-series switch with low-latency router can greatly improve the performance of state-of-the-art NoCs.