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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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Volume 8, issue 9
Geosci. Model Dev., 8, 2815–2827, 2015
https://doi.org/10.5194/gmd-8-2815-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Geosci. Model Dev., 8, 2815–2827, 2015
https://doi.org/10.5194/gmd-8-2815-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Development and technical paper 09 Sep 2015

Development and technical paper | 09 Sep 2015

POM.gpu-v1.0: a GPU-based Princeton Ocean Model

S. Xu et al.

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Blumberg, A. F. and Mellor, G. L.: Diagnostic and prognostic numerical circulation studies of the South Atlantic Bight, J. Geophys. Res.-Oceans, (1978–2012), 88, 4579–4592, 1983.
Blumberg, A. F. and Mellor, G. L.: A description of a three-dimensional coastal ocean circulation model, Coast. Est. Sci., 4, 1–16, 1987.
Browne, S., Dongarra, J., Garner, N., Ho, G., and Mucci, P.: A portable programming interface for performance evaluation on modern processors, Int. J. High Perf. Comp. Appl., 14, 189–204, 2000.
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In this paper, we redesign the mpiPOM with GPUs. Specifically, we first convert the model from its original Fortran form to a new CUDA-C version, POM.gpu-v1.0. Then we optimize the code on each of the GPUs, the communications between the GPUs, and the I/O between the GPUs and the CPUs. We show that the performance of the new model on a workstation containing 4 GPUs is comparable to that on a powerful cluster with 408 standard CPU cores, and it reduces the energy consumption by a factor of 6.8.
In this paper, we redesign the mpiPOM with GPUs. Specifically, we first convert the model from...
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