可重构数据中心网络研究综述

超大规模数据中心成为数字社会的关键基础设施.用户端应用的激增使得数据中心网络(Data Center Networks,DCNs)的东西向流量呈指数级增长,同时端应用的多样化也导致了严重的流量倾斜问题.此外,后摩尔时代的到来和Dennard缩放的失效使得数据中心网络设备容量的增速趋缓.数据中心网络面临用户激增、流量倾斜...

State-of-the-art Survey on Reconfigurable Data Center Networks

Hyper-scale data centers have become the key infrastructure in digital society.The prosperity of user applications has caused exponential growth of east-west traffic in the Data Center Networks(DCNs),and simultaneously,the diversification of user applications has led to serious traffic skew problems.On the other hand,the growth of network equipment capacity becomes slow in the post-Moore era,with the breakdown of Dennard scaling.Reconfigurable Data Center Networks(RDCNs)emerge when data centers are facing the pressures from the surge of users and the skew traffic as well as the CMOS performance wall.Firstly,this paper presents five motivations of RDCNs.Then,two types of enabling physical technologies for RDCNs are summarized and the research status of RDCNs is elaborated in detail in terms of the three-design space,i.e.,link-level reconfiguration,layer-level reconfiguration and topology-level reconfiguration.In addition,theoretical research results of RDCNs are introduced.Finally,the future work is presented and the whole paper is concluded.