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Performance Portability Analysis for Real-Time Simulations of Smoke Propagation Using OpenACC

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Book cover High Performance Computing (ISC High Performance 2017)

Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 10524))

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Abstract

Real-time simulations of smoke propagation during fires in complex geometries challenge engineers, physicists, mathematicians and computer scientists due to the complexity of fluid dynamics and the large number of involved physical and chemical processes. Recently, several application scenarios emerged that require real-time predictions during an incident to support the rescue teams. Therefore, we develop the CFD-based simulation software JuROr aiming to run in real-time by leveraging parallel computer architectures like CPUs and GPUs. For that, we parallelize the code with OpenACC directives that promise maintenance of a single source base by delegating some architecture-agnostic optimizations to the compiler. We investigate the performance portability of JuROr using PGI’s OpenACC implementation across four Intel CPUs and three NVIDIA GPUs. We present the achieved performance shares as part of a roofline model where we focus on traditionally-computed arithmetic code intensities, as well as on a measurement approach based on performance counters.

The original version of this chapter was revised: The ORCIDs of second and third authors have been corrected. The erratum to this chapter is available at https://doi.org/10.1007/978-3-319-67630-2_54

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Acknowledgements

This study was performed within the project ORPHEUS funded by the Federal Ministry of Education and Research (BMBF) Program on ‘Research for Civil Security - Protection and Rescue in complex Disaster Situations’ (funding code 13N13266). Some simulations were performed with computing resources granted by RWTH Aachen University under project rwth0207.

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Authors and Affiliations

  1. JSC, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52428, Jülich, Germany

    Anne Küsters & Lukas Arnold

  2. IT Center, RWTH Aachen University, Seffenter Weg 23, 52074, Aachen, Germany

    Sandra Wienke

  3. JARA-HPC, 52074, Aachen, Germany

    Sandra Wienke

Authors
  1. Anne Küsters
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  2. Sandra Wienke
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  3. Lukas Arnold
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Corresponding author

Correspondence to Anne Küsters .

Editor information

Editors and Affiliations

  1. Deutsches Klimarechenzentrum (DKRZ), Hamburg, Hamburg, Germany

    Julian M. Kunkel

  2. TITECH, Tokyo, Japan

    Rio Yokota

  3. Department of Computer Science, University of Delaware, Newark, Delaware, USA

    Michela Taufer

  4. Lawrence Berkeley National Laboratory, Berkeley, California, USA

    John Shalf

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Küsters, A., Wienke, S., Arnold, L. (2017). Performance Portability Analysis for Real-Time Simulations of Smoke Propagation Using OpenACC. In: Kunkel, J., Yokota, R., Taufer, M., Shalf, J. (eds) High Performance Computing. ISC High Performance 2017. Lecture Notes in Computer Science(), vol 10524. Springer, Cham. https://doi.org/10.1007/978-3-319-67630-2_35

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  • DOI: https://doi.org/10.1007/978-3-319-67630-2_35

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-67629-6

  • Online ISBN: 978-3-319-67630-2

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