Power-aware bandwidth-reconfigurable optical interconnects for high-performance computing (HPC) systems

Avinash Karanth Kodi, Ahmed Louri

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

7 Scopus citations

Abstract

As communication distances and bit rates increase, opto-electronic interconnects are becoming de-facto standard for designing high-bandwidth low-latency interconnection networks for high performance computing (HPC) systems. While bandwidth scaling with efficient multiplexing techniques (wavelengths, time and space) are available, static assignment of wavelengths can be detrimental to network performance for adversial traffic patterns. Dynamic bandwidth reconfiguration based on actual traffic pattern can lead to improved network performance by utilizing idle resources. While dynamic hand-width re-allocation (DBR) techniques can alleviate interconnection bottlenecks, power consumption also increases considerably. In this paper, we propose a dynamically reconfigurable architecture called E-RAPID (Extended-Reconfigurable, All-Photonic Interconnect for Distributed and parallel systems) that not only dynamically reallocates bandwidth, but also reduces the power consumption for all traffic patterns. Our proposed LS (Lock-Step) reconfiguration technique combines Dynamic Power Management (DPM) with DBR techniques, achieving a reduction in power consumption of 25%-50% while degrading the throughput by less than 5%.

Original languageEnglish (US)
Title of host publicationProceedings - 21st International Parallel and Distributed Processing Symposium, IPDPS 2007; Abstracts and CD-ROM
DOIs
StatePublished - Sep 24 2007
Event21st International Parallel and Distributed Processing Symposium, IPDPS 2007 - Long Beach, CA, United States
Duration: Mar 26 2007Mar 30 2007

Publication series

NameProceedings - 21st International Parallel and Distributed Processing Symposium, IPDPS 2007; Abstracts and CD-ROM

Other

Other21st International Parallel and Distributed Processing Symposium, IPDPS 2007
CountryUnited States
CityLong Beach, CA
Period3/26/073/30/07

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ASJC Scopus subject areas

  • Hardware and Architecture
  • Software
  • Mathematics(all)

Cite this

Kodi, A. K., & Louri, A. (2007). Power-aware bandwidth-reconfigurable optical interconnects for high-performance computing (HPC) systems. In Proceedings - 21st International Parallel and Distributed Processing Symposium, IPDPS 2007; Abstracts and CD-ROM [4228001] (Proceedings - 21st International Parallel and Distributed Processing Symposium, IPDPS 2007; Abstracts and CD-ROM). https://doi.org/10.1109/IPDPS.2007.370273