Abstract

High-performance computing systems and datacenters will interconnect hundreds to thousands of heterogeneous general purpose or specialized cores in the future. As the number of network end-point sockets scales exponentially, the underlying communication fabric must deliver high bandwidth with low power and reduced switching complexity. While high-radix routers enable smaller diameter networks, the penalty is in increased switching complexity and router power. In this paper, we propose SPRINT (scalable photonic reconfigurable interconnect), which can scale to a large number of cores using photonic switching implemented with silicon micro-ring resonators (MRRs). MRRs are low power, high bandwidth photonic switching devices that can be arranged to function similarly to a high-radix router with reduced complexity and power. We will first show the design of a 64 core cluster using optical interconnects and electrical packet switching. To build scalable switching crossconnects, we investigate the design of 256-, 512- and 1024-socket versions of SPRINT connected to function as passive arrayed-waveguide gratings. Our proposed switching crossconnect with single and dual micro-rings minimizes the hop count to 4 for a 1024 core network while reducing the power dissipation, increasing the bandwidth and reducing the switching complexity.

©2012 Optical Society of America

High-Port and Low-Latency Optical Switches for Disaggregated Data Centers: The Hipoλaos Switch Architecture [Invited]

N. Terzenidis, M. Moralis-Pegios, G. Mourgias-Alexandris, T. Alexoudi, K. Vyrsokinos, and N. Pleros
J. Opt. Commun. Netw. 10(7) B102-B116 (2018)

Hierarchical photoelectric hybrid packet switching network for high-performance computing

Bing-Xi Pei, Shi Xu, Zhang Luo, Qin Wang, Ming-Che Lai, and Wei-Feng He
J. Opt. Commun. Netw. 14(8) 680-690 (2022)

Hierarchical and reconfigurable optical/electrical interconnection network for high-performance computing

Zuoqing Zhao, Bingli Guo, Yu Shang, and Shanguo Huang
J. Opt. Commun. Netw. 12(3) 50-61 (2020)

Definition and Performance Evaluation of a Low-Cost/High-Capacity Scalable Integrated OTN/WDM Switch

V. Eramo, M. Listanti, R. Sabella, and F. Testa
J. Opt. Commun. Netw. 4(12) 1033-1045 (2012)

Low Latency Optical Switch for High Performance Computing With Minimized Processor Energy Load [Invited]

Shiyun Liu, Qixiang Cheng, Muhammad Ridwan Madarbux, Adrian Wonfor, Richard V. Penty, Ian H. White, and Philip M. Watts
J. Opt. Commun. Netw. 7(3) A498-A510 (2015)