A bypass-based low latency network-on-chip router

doi:10.1587/elex.16.20181147

	A bypass-based low latency network-on-chip router
	Guo, Peng1,2 ; Liu, Qingbin1,2 ; Chen, Ruizhi1,2 ; Yang, Lei1 ; Wang, Donglin1
发表期刊	IEICE ELECTRONICS EXPRESS
ISSN	1349-2543
	2019-02-25
卷号	16 期号:4 页码:12
通讯作者	Guo, Peng(iagp1991@163.com)
摘要	As the most critical components of Network on chip (NoC), the routers need to select suitable output ports and guarantee every flit accesses the hardware resource exclusively. Thus they are normally designed with several pipelines. However, most flits don't compete for the same output port with other flits in real applications. In this work, we introduce a bypass path to the traditional router thus the non-conflict flits can be forwarded directly. Combined with several other optimizations, we propose a bypass-based low latency NoC router (BNR). When no congestion occurs, BNR can transfer the flit through the bypass path with only one cycle. Otherwise, the flits are transferred through the conventional path with two hops. Besides, we also present a simplified version, BNR-S. Compared with BNR, it only bypasses the short packets and will reduce the area overhead significantly. For the synthetic traffic with different injection rate, BNR achieves 1.48x and 1.31x speedup than the two baselines while BNR-S achieves 1.3x and 1.15x. They also bring obvious benefits for several real applications. In addition, the experiments also illustrate that the proposed bypass mechanism can reduce dynamic power.
关键词	network-on-chip router bypass low latency
DOI	10.1587/elex.16.20181147
收录类别	SCI
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Electrical & Electronic
WOS记录号	WOS:000462020400011
出版者	IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ia.ac.cn/handle/173211/23472
专题	国家专用集成电路设计工程技术研究中心
通讯作者	Guo, Peng
作者单位	1.Chinese Acad Sci, Inst Automat, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China
第一作者单位	中国科学院自动化研究所
通讯作者单位	中国科学院自动化研究所
推荐引用方式 GB/T 7714	Guo, Peng,Liu, Qingbin,Chen, Ruizhi,et al. A bypass-based low latency network-on-chip router[J]. IEICE ELECTRONICS EXPRESS,2019,16(4):12.
APA	Guo, Peng,Liu, Qingbin,Chen, Ruizhi,Yang, Lei,&Wang, Donglin.(2019).A bypass-based low latency network-on-chip router.IEICE ELECTRONICS EXPRESS,16(4),12.
MLA	Guo, Peng,et al."A bypass-based low latency network-on-chip router".IEICE ELECTRONICS EXPRESS 16.4(2019):12.