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On the trade-offs between energy to solution and runtime for real-world CFD test-cases

Authors:

Michael Bareford,

Michèle WeilandAuthors Info & Claims

EASC '16: Proceedings of the Exascale Applications and Software Conference 2016

Article No.: 6, Pages 1 - 8

https://doi.org/10.1145/2938615.2938619

Published: 26 April 2016 Publication History

Abstract

This paper provides an insight into the optimisation of runtime and energy performance for two widely-used CFD codes. Energy efficiency is a hot-topic in HPC and methods to reduce the energy consumption of large machines are an active area of research. In this paper, we examine the energy efficiency and runtime performance of the SBLI and Nektar++ codes, using small but real-world test cases. The codes are instrumented in sufficient detail to reveal significant variability in energy usage during the course of the simulations. In addition, the test cases are run at different CPU frequencies and the consequences of changing this parameter, for both runtime performance (time to solution) and power performance (energy to solution) are presented.

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Cited By

Wright SRidgers CMudalige GLantra ZWilliams JSunderland AThorne SArter W(2024)Developing Performance Portable Plasma Edge Simulations: A SurveyComputer Physics Communications10.1016/j.cpc.2024.109123(109123)Online publication date: Feb-2024
https://doi.org/10.1016/j.cpc.2024.109123
Weiland MParsons M(2022)EPCC’s Exascale Journey: A Retrospective of the Past 10 Years and a Vision of the FutureComputing in Science & Engineering10.1109/MCSE.2021.311910124:1(8-13)Online publication date: 1-Jan-2022
https://doi.org/10.1109/MCSE.2021.3119101

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cover image ACM Other conferences

EASC '16: Proceedings of the Exascale Applications and Software Conference 2016

April 2016

59 pages

ISBN:9781450341226

DOI:10.1145/2938615

Copyright © 2016 ACM.

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than the author(s) must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected].

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 26 April 2016

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EU Horizon 2020 Framework Programme (H2020)

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EASC '16

EASC '16: Exascale Applications and Software Conference 2016

April 26 - 29, 2016

Stockholm, Sweden

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Cited By

Wright SRidgers CMudalige GLantra ZWilliams JSunderland AThorne SArter W(2024)Developing Performance Portable Plasma Edge Simulations: A SurveyComputer Physics Communications10.1016/j.cpc.2024.109123(109123)Online publication date: Feb-2024
https://doi.org/10.1016/j.cpc.2024.109123
Weiland MParsons M(2022)EPCC’s Exascale Journey: A Retrospective of the Past 10 Years and a Vision of the FutureComputing in Science & Engineering10.1109/MCSE.2021.311910124:1(8-13)Online publication date: 1-Jan-2022
https://doi.org/10.1109/MCSE.2021.3119101

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