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Compiling a High-Level Directive-Based Programming Model for GPGPUs

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Languages and Compilers for Parallel Computing (LCPC 2013)

Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 8664))

Abstract

OpenACC is an emerging directive-based programming model for programming accelerators that typically enable non-expert programmers to achieve portable and productive performance of their applications. In this paper, we present the research and development challenges, and our solutions to create an open-source OpenACC compiler in a main stream compiler framework (OpenUH of a branch of Open64). We discuss in details our loop mapping techniques, i.e. how to distribute loop iterations over the GPGPU’s threading architectures, as well as their impacts on performance. The runtime support of this programming model are also presented. The compiler was evaluated with several commonly used benchmarks, and delivered similar performance to those obtained using a commercial compiler. We hope this implementation to serve as compiler infrastructure for researchers to explore advanced compiler techniques, to extend OpenACC to other programming languages, or to build performance tools used with OpenACC programs.

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Acknowledgements

This work was supported in part by the NVIDIA and Department of Energy under Award Agreement No. DE-FC02-12ER26099. We would also like to thank PGI for providing the compilers and support for the evaluation.

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Authors and Affiliations

  1. Department of Computer Science, University of Houston, Houston, TX, 77004, USA

    Xiaonan Tian, Rengan Xu, Yonghong Yan, Zhifeng Yun, Sunita Chandrasekaran & Barbara Chapman

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  1. Xiaonan Tian
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  2. Rengan Xu
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  3. Yonghong Yan
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  4. Zhifeng Yun
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  5. Sunita Chandrasekaran
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  6. Barbara Chapman
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Corresponding author

Correspondence to Xiaonan Tian .

Editor information

Editors and Affiliations

  1. Silicon Valley, Qualcomm Research, San Jose, California, USA

    Călin Cașcaval

  2. Silicon Valley, Qualcomm Research, San Jose, California, USA

    Pablo Montesinos

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Tian, X., Xu, R., Yan, Y., Yun, Z., Chandrasekaran, S., Chapman, B. (2014). Compiling a High-Level Directive-Based Programming Model for GPGPUs. In: Cașcaval, C., Montesinos, P. (eds) Languages and Compilers for Parallel Computing. LCPC 2013. Lecture Notes in Computer Science(), vol 8664. Springer, Cham. https://doi.org/10.1007/978-3-319-09967-5_6

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  • DOI: https://doi.org/10.1007/978-3-319-09967-5_6

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-09966-8

  • Online ISBN: 978-3-319-09967-5

  • eBook Packages: Computer ScienceComputer Science (R0)

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