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Software Cost Analysis of GPU-Accelerated Aeroacoustics Simulations in C++ with OpenACC

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High Performance Computing (ISC High Performance 2016)

Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 9945))

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Abstract

Aeroacoustics simulations leverage the tremendous computational power of today’s supercomputers, e.g., to predict the noise emissions of airplanes. The emergence of GPUs that are usable through directive-based programming models like OpenACC promises a cost-efficient solution for flow-induced noise simulations with respect to hardware expenditure and development time. However, OpenACC’s capabilities for real-world C++ codes have been scarcely investigated so far and software costs are rarely evaluated and modeled for this kind of high-performance projects. In this paper, we present our OpenACC parallelization of ZFS, an aeroacoustics simulation framework written in C++, and its early performance results. From our implementation work, we derive common pitfalls and lessons-learned for real-world C++ codes using OpenACC. Furthermore, we borrow software cost estimation techniques from software engineering to evaluate the development efforts needed in a directive-based HPC environment. We discuss applicability and challenges of the popular COCOMO II model applied to the parallelization of ZFS.

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Notes

  1. 1.

    The High-Q Club, http://www.fz-juelich.de/ias/jsc/EN/Expertise/High-Q-Club/ZFS/_node.html.

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Author information

Authors and Affiliations

  1. IT Center, RWTH Aachen University, Aachen, Germany

    Marco Nicolini, Julian Miller, Sandra Wienke & Matthias S. Müller

  2. JARA – High-Performance Computing, Aachen, Germany

    Sandra Wienke, Michael Schlottke-Lakemper & Matthias S. Müller

  3. Institute of Aerodynamics, RWTH Aachen University, Aachen, Germany

    Michael Schlottke-Lakemper & Matthias Meinke

Authors
  1. Marco Nicolini
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  2. Julian Miller
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  3. Sandra Wienke
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  4. Michael Schlottke-Lakemper
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  5. Matthias Meinke
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  6. Matthias S. Müller
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Corresponding author

Correspondence to Julian Miller .

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Editors and Affiliations

  1. University of Delaware, Newark, Delaware, USA

    Michela Taufer

  2. Forschungszentrum Jülich, Jülich, Germany

    Bernd Mohr

  3. DKRZ, Hamburg, Germany

    Julian M. Kunkel

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Nicolini, M., Miller, J., Wienke, S., Schlottke-Lakemper, M., Meinke, M., Müller, M.S. (2016). Software Cost Analysis of GPU-Accelerated Aeroacoustics Simulations in C++ with OpenACC. In: Taufer, M., Mohr, B., Kunkel, J. (eds) High Performance Computing. ISC High Performance 2016. Lecture Notes in Computer Science(), vol 9945. Springer, Cham. https://doi.org/10.1007/978-3-319-46079-6_36

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  • DOI: https://doi.org/10.1007/978-3-319-46079-6_36

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