NeTS: Large: Collaborative Research: HCPN: Hybrid Circuit/Packet Networking

NeTS：大型：协作研究：HCPN：混合电路/分组网络

• 批准号: 1314721
• 负责人: David Andersen
• 金额: $ 59.94万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-08-01 至 2018-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1314721&HistoricalAwards=false
• 关键词: NeTS; Large; Collaborative; Research; HCPN

Ever-larger data centers are powering the cloud computing revolution, but the scale of these installations is currently limited by the ability to provide sufficient internal network connectivity. Delivering scalable packet-switched interconnects that can support the continually increasing data rates required between literally hundreds of thousands of servers is an extremely challenging problem that is only getting harder. This project leverages microsecond optical circuit-switch technology to develop a hybrid switching paradigm that spans the gap between traditional circuit switching and full-fledged packet switching, achieving a level of performance and scale not previously attainable. This will result in a hybrid switch whose optical switching capacity is orders of magnitude larger than the electrical packet switch, yet whose performance from an end-to-end perspective is largely indistinguishable from a giant (electrical) packet switch.The research provides a quantitative baseline for hybrid network design across a wide range of present and future technologies. The project will consist of five parts: i) traffic characterization to identify the class of network traffic that a circuit switch can support as well as the partitioning of the traffic between the circuit and packet portions of the network; ii) circuit scheduling to enable the circuit switch to rapidly multiplex a set of circuits across a large set of data center traffic flows; iii) traffic conditioning to reduce the variability of traffic at the end hosts, easing the demands placed on switch scheduling; iv) a prototype hybrid network that can use an optical circuit switch that operates three orders of magnitude faster than existing solutions; and v) a trend analysis to understand the tradeoffs resulting from potential future technology advances.The work stands to dramatically improve data center networks, significantly reducing operating costs and increasing energy efficiency. The research material will be incorporated into courses, helping to train the next generation of computer networking scientists and engineers. The PIs will also continue ongoing outreach to high school students, both through the UCSD COSMOS summer program and through talks delivered at local high schools.

越来越大的数据中心正在推动云计算革命，但这些设施的规模目前受到提供足够内部网络连接能力的限制。提供可扩展的分组交换互连，以支持数十万台服务器之间所需的持续增长的数据速率，这是一个极具挑战性的问题，而且只会变得越来越困难。该项目利用微秒光电路交换技术开发一种混合交换模式，跨越传统电路交换和成熟的分组交换之间的差距，实现了以前无法达到的性能和规模水平。这将导致混合交换机的光交换容量的数量级大于电气分组交换机，但其性能从端到端的角度来看，在很大程度上是一个巨大的（电气）分组交换机的区别。这项研究提供了一个定量的基准混合网络设计在广泛的范围内，现在和未来的技术。该项目将包括五个部分：i）流量特征，以确定电路交换机可以支持的网络流量类别以及网络的电路和分组部分之间的流量划分; ii）电路调度，以使电路交换机能够快速多路复用一组电路跨越大量数据中心流量流; iii）流量调节，以减少终端主机处的流量的可变性，减轻对交换机调度的要求; iv）可以使用比现有解决方案快三个数量级的光电路交换机的原型混合网络;以及v）趋势分析，以了解潜在的未来技术进步所带来的权衡。这项工作将显著改善数据中心网络，显著降低运营成本并提高能源效率。研究材料将被纳入课程，帮助培养下一代计算机网络科学家和工程师。PI还将继续通过UCSD COSMOS暑期项目和在当地高中举行的讲座，向高中生进行宣传。