A low overhead load balancing router for network-on-chip  

作　　者：周小锋 刘露 朱樟明 周端 

机构地区：[1]School of Microelectronics,Xidian University

出　　处：《Journal of Semiconductors》2016年第11期87-93,共7页半导体学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Nos.61474087,61322405,61376039)

摘　　要：The design of a router in a network-on-chip （NoC） system has an important impact on some perfor- mance criteria. In this paper, we propose a low overhead load balancing router （LOLBR） for 2D mesh NoC to enhance routing performance criteria with low hardware overhead. The proposed LOLBR employs a balance tog- gle identifier to control the initial routing direction of X or Y for flit injection. The simplified demultiplexers and multiplexers are used to handle output ports allocation and contention, which provide a guarantee of deadlock avoidance. Simulation results show that the proposed LOLBR yields an improvement of routing performance over the reported routing schemes in average packet latency by 26.5%. The layout area and power consumption of the network compared with the reported routing schemes are 15.3% and 11.6% less respectively.The design of a router in a network-on-chip （NoC） system has an important impact on some perfor- mance criteria. In this paper, we propose a low overhead load balancing router （LOLBR） for 2D mesh NoC to enhance routing performance criteria with low hardware overhead. The proposed LOLBR employs a balance tog- gle identifier to control the initial routing direction of X or Y for flit injection. The simplified demultiplexers and multiplexers are used to handle output ports allocation and contention, which provide a guarantee of deadlock avoidance. Simulation results show that the proposed LOLBR yields an improvement of routing performance over the reported routing schemes in average packet latency by 26.5%. The layout area and power consumption of the network compared with the reported routing schemes are 15.3% and 11.6% less respectively.

关 键 词：NOC low overhead load balancing ROUTER 

分 类 号：TN47[电子电信—微电子学与固体电子学]