面向网络延迟均衡性的片上网络交叉开关分配策略

Network latency equalization-oriented switch allocation strategy for networks-on-chip

针对路由器中的交叉开关分配,提出面向网络延迟均衡性的分配策略,旨在通过更加公平的交叉开关分配策略提升网络延迟均衡性,从而进一步提升系统性能。通过在全系统模拟器上运行SPEC CPU2006实验表明,与传统的分离式分配策略和最新的TS-Router分配策略相比,延迟标准差分别平均降低了13. 8%和3. 9%,而最大延迟分别平均降低了45. 6%和15. 1%。在系统性能方面,相比于TS-Router,所提分配策略在IPC上平均提升了0. 8%。在分离式分配器的基础上完成了硬件实现,并给出了速度、面积和功耗方面的开销评估。

According to the problem of switch allocation,a network latency equalization-oriented switch allocation strategy was proposed to improve system performance by designing a more fairness switch allocation strategy and improving the degree of network latency equalization. The evaluation of the design with SPEC CPU2006 benchmarks was performed in a full-system simulator. Compared with the canonical separable switch allocator and the TS-Router (recently proposed switch allocator),the experiments show that the approach decreases LSD (latency standard deviation) by 13. 8% and 3. 9% respectively,as well as ML (maximum latency) by 45. 6% and 15. 1% respectively. The approach improves system throughput by 0. 8% over that of TS-Router. Finally,the design is implemented based on the separable switch allocator,and it can perform the evaluation in speed,area and power.