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0707香港科大陈凯: Congestion Control forHigh-speed Extremely Shallow-buffered Datacenter Networks
2017-07-06 09:09  

 :Congestion Control forHigh-speed Extremely Shallow-buffered Datacenter Networks

报告人:陈凯  香港科技大学博导、副教授

 间:201777日(星期五)下午3:00  

 点:秀山校区逸夫楼202

 象:全校感兴趣教师

主办单位:计算机科学与技术学院

报告人简介:

Kai Chen is an Associate Professor with Department of Computer Scienceand Engineering, Hong Kong University of Science and Technology. He receivedhis PhD in Computer Science from Northwestern University, Evanston IL in 2012.His research interests include networked systems design and implementation,data center networks, and networking support for cloud, big-data anddeep-learning/AI systems. He values practical system research, has published invarious top venues such as SIGCOMM and NSDI, and is now actively working withbig IT companies such as Tencent, Huawei, Microsoft, Nvidia, etc., to translatehis research into practice.

陈凯:香港科技大学计算机科学与工程系副教授,博士生导师,系统网络实验室主任,香港科大-微信人工智能联合实验室副主任。主要研究方向包括数据中心网络、云计算、大数据与人工智能系统。担任多个国际学术期刊编委和学术会议主席,目前发表学术论文60余篇,拥有科技发明15项,其中2项成果已成功部署到工业界,与微软、腾讯、华为等IT公司保持密切合作, 承担多项香港政府课题研究,参与国家973重大基础研究。

报告简介:

     The link speed in production datacenters isgrowing fast, from 1Gbps to 40Gbps or even 100Gbps. However, the buffer size ofcommodity switches increases slowly, e.g., from 4MB at 1Gbps to 16MB at100Gbps, thus significantly outpaced by the link speed. In such extremelyshallow-buffered datacenter networks, prior TCP/ECN solutions suffer fromeither excessive packet losses or significant throughput degradation. In thistalk, I will introduce BCC (Buffer-aware Congestion Control), a simple yeteffective solution to this problem. BCC operates based on real-time sharedbuffer utilization: when the buffer is abundant, BCC delivers both highthroughput and low packet loss rate; when it becomes scarce, BCC maintain lowpacket losses at the cost of sacrificing a small amount of throughput. We havevalidated BCC’s efficacy in a 100G testbed and demonstrate its superiorperformance using extensive simulations.

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