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An unstructured CFD mini-application for the performance prediction of a production CFD code
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Owenson, A. M. B, Wright, S. A., Bunt, R. A., Ho, Y. K., Street, M. J. and Jarvis, S. A. (2020) An unstructured CFD mini-application for the performance prediction of a production CFD code. Concurrency and Computation: Practice and Experience, 32 (10). e5443. doi:10.1002/cpe.5443 ISSN 1532-0626.
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Official URL: https://doi.org/10.1002/cpe.5443
Abstract
Maintaining the performance of large scientific codes is a difficult task. To aid in this task a number of mini-applications have been developed that are more tractable to analyse than large-scale production codes, while retaining the performance characteristics of them. These “mini-apps” also enable faster hardware evaluation and, for sensitive commercial codes, allow evaluation of code and system changes outside of access approval processes. In this paper we develop MG-CFD, a mini-application that represents a geometric multigrid, unstructured computational fluid dynamics (CFD) code, designed to exhibit similar performance characteristics without sharing commercially sensitive code. We detail our experiences of developing this application, using guidelines detailed in existing research and contributing further to these. Our application is validated against the inviscid flux routine of HYDRA, a CFD code developed by Rolls-Royce plc. for turbomachinery design. This paper (i) documents the development of MG-CFD, (ii) introduces an associated performance model with which it is possible to assess the performance of HYDRA on new HPC architectures; (iii) demonstrates that it is possible to use MG-CFD and the performance models to predict the performance of HYDRA with a mean error of 9.2% for strong-scaling studies.
Item Type: | Journal Article | |||||||||||||||
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Subjects: | Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software | |||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Computer Science | |||||||||||||||
Library of Congress Subject Headings (LCSH): | Computational fluid dynamics -- Software, Supercomputers | |||||||||||||||
Journal or Publication Title: | Concurrency and Computation: Practice and Experience | |||||||||||||||
Publisher: | John Wiley & Sons Ltd. | |||||||||||||||
ISSN: | 1532-0626 | |||||||||||||||
Official Date: | 25 May 2020 | |||||||||||||||
Dates: |
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Volume: | 32 | |||||||||||||||
Number: | 10 | |||||||||||||||
Article Number: | e5443 | |||||||||||||||
DOI: | 10.1002/cpe.5443 | |||||||||||||||
Status: | Peer Reviewed | |||||||||||||||
Publication Status: | Published | |||||||||||||||
Reuse Statement (publisher, data, author rights): | © John Wiley & Sons Ltd | |||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||
Date of first compliant deposit: | 26 June 2019 | |||||||||||||||
Date of first compliant Open Access: | 28 June 2019 | |||||||||||||||
RIOXX Funder/Project Grant: |
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