Local Traffic-Based Energy-Efficient Hybrid Switching for On-Chip Networks

Yuan He, Jinyu Jiao, Masaaki Kondo

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

Abstract

Advanced flow control mechanisms employed by modern on-chip networks are the reasons of large energy footprint and long per-hop latency. On the other hand, dated and simpler flow controls such as circuit switching can draw far less power and offer an end-to-end latency analogous to wire delay. In this paper, we present a hybrid flow control mechanism, which mixes both virtual channels and circuit-switching, to provide a latency-competitive and energy-efficient on-chip network design. Contrary to existing hybrid switching designs, our proposal is based on local traffic so that circuits are formed without the knowledge of end-to-end traffic. When compared to on-chip networks with virtual channels, our proposal achieves a very competitive latency per flit, for up to 4% lower, while also dramatically suppressing the energy per flit by up to 18%.

Original languageEnglish
Title of host publicationProceedings - 29th Euromicro International Conference on Parallel, Distributed and Network-Based Processing, PDP 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages198-206
Number of pages9
ISBN (Electronic)9781665414555
DOIs
Publication statusPublished - 2021 Mar
Externally publishedYes
Event29th Euromicro International Conference on Parallel, Distributed and Network-Based Processing, PDP 2021 - Virtual, Valladolid, Spain
Duration: 2021 Mar 102021 Mar 12

Publication series

NameProceedings - 29th Euromicro International Conference on Parallel, Distributed and Network-Based Processing, PDP 2021

Conference

Conference29th Euromicro International Conference on Parallel, Distributed and Network-Based Processing, PDP 2021
Country/TerritorySpain
CityVirtual, Valladolid
Period21/3/1021/3/12

Keywords

  • energy
  • hybrid switching
  • latency
  • local traffic
  • on-chip networks

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Information Systems

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