光互连数据中心网络架构与业务路由技术研究
Research on Intra-rack Architecture and Routing Technology of Optical Interconnection Networks for Data Centers
王金涛 1刘逢清1
作者信息
- 1. 南京邮电大学 电子与光学工程学院、柔性电子(未来技术)学院,南京 210023
- 折叠
摘要
[目的]目前已提出的数据中心光互连网络结构中,大多将光网络用于交换机间的机架间通信,而机架内服务器之间的通信则通过电以太网交换机实现.由于电以太网交换机功率较大且数量众多,目前所提出的数据中心光互连网络存在能耗高、带宽低和分组时延大等问题.为了进一步改善数据中心光互连网络的性能,文章提出了一种基于可重排无阻塞三级 Clos网络的机架内光互连网络结构.[方法]在此结构中,机架内服务器通过 1 个三级Clos网络实现相互连接,同时结合文章所提的多波长路由算法可实现机架内服务器间的无阻塞通信.[结果]文章使用 OMNET++软件进行了仿真验证,结果显示,文章所提结构的吞吐量在同等条件下比传统机架内电交换提高 20%,端到端平均时延减少 90%,能耗减少 67%.[结论]通过仿真对比可知,文章所提结构可以改善数据中心光互连网络的带宽利用、分组时延及能耗等性能.
Abstract
[Objective]At present,most of the proposed data center optical interconnection network architectures use optical networks for inter-rack communication among switches,while the intra-rack communication among servers is still realized by electrical Ethernet switches.Due to the large power and large number of electrical Ethernet switches,the existing data center optical interconnection networks have the problems of high energy consumption,low bandwidth provision and large packet de-lay.[Methods]In order to further improve the performance of data center optical interconnection network,this paper proposes an in-rack optical interconnection network architecture based on a rearrangeable non-blocking Clos network.In this architec-ture,servers in the rack are connected to each other through a three-stage Clos network.Non-blocking communication between servers in the rack can be achieved by the proposed multi-wavelength routing algorithm.[Results]In this paper,OMNET++software is used for simulation verification.The simulation results show that the throughput of the proposed architecture is 20%higher than that of the traditional in-rack electrical switching under the same conditions.The average end-to-end delay is reduced by 90%,and the energy consumption is reduced by 67%.[Conclusion]It also demonstrates that the proposed architec-ture can improve the performance of bandwidth usage,packet delay and energy consumption in a data center optical intercon-nection network.
关键词
光互连/数据中心网络/架内通信/多级交换/波长路由Key words
optical interconnection/data center network/intra-rack communication/multistage switching/wavelength routing引用本文复制引用
基金项目
国家自然科学基金资助项目(62004105)
出版年
2024
国家科技期刊平台
NSTL
万方数据