Toward runtime power management of exascale networks by on/off control of links

Ehsan Totoni, Nikhil Jain, Laxmikant V. Kale

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

Abstract

Higher radix networks, such as high-dimensional tori and multi-level directly connected networks, are being used for supercomputers as they become larger but need lower diameter. These networks have more resources (e.g. links) in order to provide good performance for a range of applications. We observe that a sizeable fraction of the links in the interconnect are never used or underutilized during execution of common parallel applications. Thus, in order to save power, we propose addition of hardware support for on/off control of links in software and their management using adaptive runtime systems. We study the effectiveness of our approach using real applications (NAMD, MILC), and application benchmarks (NAS Parallel Benchmarks, Jacobi). They are simulated on representative topologies such as 6-D Torus and Dragonfly (e.g. IBM PERCS, Cray Aries). For common applications, our approach can save up to 16% of total machine's power and energy, without any performance penalty.

Original languageEnglish (US)
Title of host publicationProceedings - IEEE 27th International Parallel and Distributed Processing Symposium Workshops and PhD Forum, IPDPSW 2013
PublisherIEEE Computer Society
Pages915-922
Number of pages8
ISBN (Print)9780769549798
DOIs
StatePublished - Jan 1 2013
Event2013 IEEE 37th Annual Computer Software and Applications Conference, COMPSAC 2013 - Boston, MA, Japan
Duration: Jul 22 2013Jul 26 2013

Publication series

NameProceedings - IEEE 27th International Parallel and Distributed Processing Symposium Workshops and PhD Forum, IPDPSW 2013

Other

Other2013 IEEE 37th Annual Computer Software and Applications Conference, COMPSAC 2013
CountryJapan
CityBoston, MA
Period7/22/137/26/13

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Software
  • Theoretical Computer Science

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  • Cite this

    Totoni, E., Jain, N., & Kale, L. V. (2013). Toward runtime power management of exascale networks by on/off control of links. In Proceedings - IEEE 27th International Parallel and Distributed Processing Symposium Workshops and PhD Forum, IPDPSW 2013 (pp. 915-922). [6650973] (Proceedings - IEEE 27th International Parallel and Distributed Processing Symposium Workshops and PhD Forum, IPDPSW 2013). IEEE Computer Society. https://doi.org/10.1109/IPDPSW.2013.191