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为提高路由器的性能,提出了一种改进的非对称多通道路由器结构,并给出了相应的排队论分析模型,用于片上网络设计方案的性能评估.通过将非对称多通道路由器输入端口中特定输出方向的通道由单个扩展到一组,降低了该方向上的队列头阻塞;通过分析该结构的各种阻塞、报文到达率和服务速率,并借助M/G/1/N排队论模型构建了对应的分析模型.给定通道组中合适的通道数量,该结构可有效降低报文平均延时、提高饱和吞吐率;结构的分析模型与仿真结果之间的平均相对误差小于6.4%.
In order to improve the performance of the router, an improved asymmetric multi-path router architecture is proposed and a corresponding queuing theory analysis model is proposed for evaluating the performance of the on-chip network design scheme. By inputting the asymmetric multi-channel router input port The channel of a specific output direction is expanded from single to a group, which reduces the queue head blocking in this direction. By analyzing various congestion, message arrival rate and service rate of the structure, and by means of M / G / 1 / N queuing theory The corresponding analytical model is constructed. Given the appropriate number of channels in a given channel group, this structure can effectively reduce the average packet delay and increase the saturation throughput rate. The average relative error between the structural analysis model and the simulation results is less than 6.4% .