Fast control plane for flexible and scalable optical interconnects

Author:

Lu Yunfeng1,Gu Huaxi1,Yu Xiaoshan12,Li Peng1

Affiliation:

1. Xidian University

2. State Key Laboratory of Mathematical Engineering and Advanced Computing

Abstract

The growth of data centers (DC) and high-performance computing (HPC) requires higher bandwidth, but traffic usually occurs between a small number of computing nodes, and the location of the communication bottleneck dynamically changes as the application runs. Therefore, the traditional static network that solves the communication bottleneck by providing excessive bandwidth cannot meet the demand of high performance and low cost at the same time. The reconfiguration of optical interconnects greatly improves the flexibility of the network, which can allocate unutilized bandwidth to node pairs with dense communication and improve resource utilization. However, this flexibility relies on a fast control plane to achieve efficient interaction between devices in the network. We made improvements in traffic collection, topology calculation, and optical switch configuration, and built an experimental platform to evaluate our control plane. The flexibility of optical interconnects shows a good acceleration effect when running applications that solve large-scale problems, and the experimental results show that a proper reconfiguration cycle can reduce the completion time of 3-D Fast Fourier Transform application by up to 53%.

Funder

National Key Research and Development Program of China

National Natural Science Foundation of China

Natural Science Foundation of Shaanxi Province for Distinguished Young Scholars

Fundamental Research Funds for the Central Universities

State Key Laboratory of Computer Architecture

Youth Innovation Team of Shaanxi Universities

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Orchid: enhancing HPC interconnection networks through infrequent topology reconfiguration;Journal of Optical Communications and Networking;2024-05-21

2. Topology configuration scheme for accelerating coflows in a hyper-FleX-LION;Journal of Optical Communications and Networking;2022-09-14

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