Articles | Volume 17, issue 16
https://doi.org/10.5194/gmd-17-6301-2024
https://doi.org/10.5194/gmd-17-6301-2024
Development and technical paper
 | 
27 Aug 2024
Development and technical paper |  | 27 Aug 2024

Mixed-precision computing in the GRIST dynamical core for weather and climate modelling

Siyuan Chen, Yi Zhang, Yiming Wang, Zhuang Liu, Xiaohan Li, and Wei Xue

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Cited articles

Baboulin, M., Buttari, A., Dongarra, J., Kurzak, J., Langou, J., Langou, J., Luszczek, P., and Tomov, S.: Accelerating scientific computations with mixed precision algorithms, Comput. Phys. Commun., 180, 2526–2533, https://doi.org/10.1016/j.cpc.2008.11.005, 2009. 
Banderier, H., Zeman, C., Leutwyler, D., Rüdisühli, S., and Schär, C.: Reduced floating-point precision in regional climate simulations: an ensemble-based statistical verification, Geosci. Model Dev., 17, 5573–5586, https://doi.org/10.5194/gmd-17-5573-2024, 2024. 
Bauer, P., Dueben, P. D., Hoefler, T., Quintino, T., Schulthess, T. C., and Wedi, N. P.: The digital revolution of Earth-system science, Nat. Comput. Sci., 1, 104–113, https://doi.org/10.1038/s43588-021-00023-0, 2021. 
Benjamin, S. G., Brown, J. M., Brunet, G., Lynch, P., Saito, K., and Schlatter, T. W.: 100 Years of Progress in Forecasting and NWP Applications, Meteorol. Monogr., 59, 13.11–13.67, https://doi.org/10.1175/AMSMONOGRAPHS-D-18-0020.1, 2019. 
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Short summary
This study explores strategies and techniques for implementing mixed-precision code optimization within an atmosphere model dynamical core. The coded equation terms in the governing equations that are sensitive (or insensitive) to the precision level have been identified. The performance of mixed-precision computing in weather and climate simulations was analyzed.
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