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On the performance of a scalable optical switching architecture for flat intercluster data center network with centralized control

机译：具有集中控制的扁平集群间数据中心网络的可伸缩光交换体系结构的性能

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摘要

Data centers have to sustain the rapid growth of data traffic due to the increasing demand of bandwidth-hungry Internet services. The current fat tree topology causes communication bottlenecks in the server interaction process, resulting in power-hungry O-E-O conversions that limit the minimum latency and the power efficiency of these systems. As a result, recent efforts have advocated that all optical data center networks (DCNs) have the capability to adapt to traffic requirements on demand. We present the design, implementation, and evaluation of a cascaded microelectromechanical systems switches-based DCN architecture which dynamically changes its topology and link capacities, thereby achieving unprecedented flexibility to adapt to dynamic traffic patterns. We analyze it under a data center traffic model to determine its suitability for this type of environment. The proposed architecture can be scaled to 3300 input/output ports by available experimental components with low blocking probability and latency. The blocking probability and latency are about 0.03 and 72 ms at a moderate traffic load for 32 input/output ports based on our numerical results, which are much smaller than the results for 4 input/output ports which are 0.13 and 235 ms, respectively.
机译：由于需要大量带宽的Internet服务的需求，数据中心必须维持数据流量的快速增长。当前的胖树拓扑结构导致服务器交互过程中出现通信瓶颈，从而导致耗电的O-E-O转换限制了这些系统的最小延迟和电源效率。结果，最近的努力提倡所有光学数据中心网络（DCN）都具有适应按需流量需求的能力。我们介绍了基于级联微机电系统交换机的DCN体系结构的设计，实现和评估，该体系结构可动态更改其拓扑结构和链接能力，从而获得前所未有的灵活性以适应动态流量模式。我们在数据中心流量模型下对其进行分析，以确定其是否适合此类环境。所提出的架构可以通过具有低阻塞概率和低等待时间的可用实验组件扩展到3300个输入/输出端口。根据我们的数值结果，对于32个输入/输出端口，在中等流量负载下的阻塞概率和等待时间分别约为0.03和72 ms，远小于4个输入/输出端口的结果，分别为0.13和235 ms。

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  • 来源
    《Optical engineering》 |2014年第7期|075101.1-075101.8|共8页
  • 作者

    Qian Kong; Shanguo Huang; Yu Zhou; Bingli Guo; Yongli Zhao; Min Zhang; Jie Zhang; Wanyi Gu;

  • 作者单位

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communication, Beijing 100876, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communication, Beijing 100876, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communication, Beijing 100876, China;

    Peking University, State Key Laboratory of Advanced Optical Communications and Networks, Beijing 100871, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communication, Beijing 100876, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communication, Beijing 100876, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communication, Beijing 100876, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communication, Beijing 100876, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    data center; switching; optical interconnects; optical network;

    机译：数据中心;交换;光学互连;光网络;

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