A New Worst-Case Throughput Bound for Oblivious Routing in Odd Radix Mesh Network

作者：Sun Guang^*; Chang Chia Wei; Lin Bill

来源：IEEE Computer Architecture Letters, 2013, 12(1): 9-12.

DOI：10.1109/L-CA.2012.5

• Networks-on-Chip (NoC)
• routing
• worst-case throughput
• average-case throughput
• mesh

1/2 network capacity is often believed to be the limit of worst-case throughput for mesh networks. However, this letter provides a new worst-case throughput bound, which is higher than 1/2 network capacity, for odd radix two-dimensional mesh networks. In addition, we propose a routing algorithm called U2TURN that can achieve this worst-case throughput bound. U2TURN considers all routing paths with at most 2 turns and distributes the traffic loads uniformly in both X and Y dimensions. Theoretical analysis and simulation results show that U2TURN outperforms existing routing algorithms in worst-case throughput. Moreover, U2TURN achieves good average-throughput at the expense of approximately 1.5x minimal average hop count.

• 出版日期2013-6
• 单位清华大学