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首页> 外文期刊>Concurrency, practice and experience >Very low computational complexity (VLCC) architecture for optical interconnect in data center networks
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Very low computational complexity (VLCC) architecture for optical interconnect in data center networks

机译：数据中心网络中的光互连具有非常低的计算复杂度（VLCC）架构

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摘要

Real time cloud computing applications require a low latency network. The latency of optical interconnect in Data Center Networks (DCNs) is dependent on the complexity of the routing algorithm. The routing algorithm makes decisions about the forwarding of a packet on each successive node. If a routing algorithm is more complex, it requires more hardware resources to implement, which incurs extra cost and latency to the optical interconnect. This paper analyzes the complexity of existing architectures for the first time by showing Big O notation of complexity for each architecture. Different factors affecting the computational complexity of any routing algorithm are identified. This paper proposes a new architecture named VLCC. It has very low fixed routing complexity irrespective of network size. It has no packet loss at the network layer under many to many and all to one communication pattern. The only packet loss is at the physical layer due to signal degradation caused by optical components. The level of signal degradation is analyzed in terms of received signal power, bit error rate (BER), receiver sensitivity, path loss, and blocking probability. VLCC architecture is highly suitable for real time applications that require deterministic quality of service (QoS), where network performance is not affected by the traffic pattern.
机译：实时云计算应用程序需要低延迟的网络。数据中心网络（DCN）中光互连的等待时间取决于路由算法的复杂性。路由算法做出有关在每个连续节点上转发数据包的决策。如果路由算法更复杂，则需要更多的硬件资源来实施，这会导致光互连的额外成本和延迟。本文通过显示每种体系结构的复杂性的大O表示法首次分析了现有体系结构的复杂性。确定了影响任何路由算法的计算复杂度的不同因素。本文提出了一种名为VLCC的新体系结构。无论网络大小如何，它的固定路由复杂度都非常低。在多对多和全部到一种通信模式下，它在网络层没有数据包丢失。唯一的分组丢失是由于光学组件导致的信号衰减而在物理层造成的。根据接收信号功率，误码率（BER），接收器灵敏度，路径损耗和阻塞概率来分析信号降级的程度。 VLCC体系结构非常适合需要确定性服务质量（QoS）的实时应用，其中网络性能不受流量模式的影响。

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  • 来源
    《Concurrency, practice and experience》 |2018年第10期|e4395.1-e4395.12|共12页
  • 作者

    Mohsin Fayyaz; KhurramAziz; Ghulam Mujtaba; Ahmad Fayyaz; Samee U. Khan;

  • 作者单位

    Department of Electrical Engineering, COMSATS Institute of Information Technology, Abbottabad, Pakistan;

    Department of Electrical Engineering, COMSATS Institute of Information Technology, Islamabad, Pakistan;

    Department of Electrical Engineering, COMSATS Institute of Information Technology, Abbottabad, Pakistan;

    Department of Electrical Engineering, COMSATS Institute of Information Technology, Abbottabad, Pakistan;

    Department of Electrical Engineering, North Dakota State University, Fargo, ND, USA;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    computational complexity; data center networks; optical interconnects;

    机译：计算复杂度;数据中心网络;光学互连;

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