Hybrid Network of Packet Switching and STDM in a Multi-FPGA System

Tomoki Shimizu, Kohei Ito, Kensuke Iizuka, Kazuei Hironaka, Hideharu Amano

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A multi-FPGA system, Flow-in-Cloud (FiC) system is currently being developed as a server for Multi-access Edge Computing (MEC), one of the core technologies of 5G. FiC system is composed of mid-range FPGAs directly connected by highspeed serial links and works virtually as a single FPGA with huge resources. Since the applications of MEC are sometimes timing- critical, a Static Time Division Multiplexing (STDM) network has been built on the FiC system. However, the STDM network suffers from the extended latency and low usage of the network resource especially when the network traffic is light. Here, we propose a hybrid router that allows packet switching to use empty slots of the STDM. The evaluation results from a real system appear that packet switching is 2.42 times faster than STDM with 8 boards FFT. Also, we propose and evaluate a dynamic allocation method that changes the switching mode according to the network load.

Original languageEnglish
Title of host publicationIEEE Symposium in Low-Power and High-Speed Chips, COOL CHIPS 2021 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665415033
DOIs
Publication statusPublished - 2021 Apr 14
Event24th IEEE Symposium in Low-Power and High-Speed Chips, COOL CHIPS 2021 - Virtual, Online, Japan
Duration: 2021 Apr 142021 Apr 16

Publication series

NameIEEE Symposium in Low-Power and High-Speed Chips, COOL CHIPS 2021 - Proceedings

Conference

Conference24th IEEE Symposium in Low-Power and High-Speed Chips, COOL CHIPS 2021
Country/TerritoryJapan
CityVirtual, Online
Period21/4/1421/4/16

ASJC Scopus subject areas

  • Hardware and Architecture

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