Articles | Volume 16, issue 15
https://doi.org/10.5194/gmd-16-4367-2023
https://doi.org/10.5194/gmd-16-4367-2023
Development and technical paper
 | 
01 Aug 2023
Development and technical paper |  | 01 Aug 2023

GPU-HADVPPM V1.0: a high-efficiency parallel GPU design of the piecewise parabolic method (PPM) for horizontal advection in an air quality model (CAMx V6.10)

Kai Cao, Qizhong Wu, Lingling Wang, Nan Wang, Huaqiong Cheng, Xiao Tang, Dongqing Li, and Lanning Wang

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Cited articles

Bleichrodt, F., Bisseling, R. H., and Dijkstra, H. A.: Accelerating a barotropic ocean model using a GPU, Ocean Model., 41, 16–21, https://doi.org/10.1016/j.ocemod.2011.10.001, 2012. 
Cao, K., Wu, Q., Wang, L., Wang, N., Cheng, H., Tang, X., Li, D., and Wang, L.: The dataset of the manuscript “GPU-HADVPPM V1.0: high-efficient parallel GPU design of the Piecewise Parabolic Method (PPM) for horizontal advection in air quality model (CAMx V6.10)”, Zenodo [data set], https://doi.org/10.5281/zenodo.7765218, 2023. 
Colella, P. and Woodward, P. R.: The Piecewise Parabolic Method (PPM) for gas-dynamical simulations, J. Comput. Phys., 54, 174–201, https://doi.org/10.1016/0021-9991(84)90143-8, 1984. 
ENVIRON: User Guide for Comprehensive Air Quality Model with Extensions Version 6.1, https://camx-wp.azurewebsites.net/Files/CAMxUsersGuide_v6.10.pdf (last access: 19 December 2022), 2014. 
ENVIRON: CAMx version 6.1, ENVIRON [code], available at: https://camx-wp.azurewebsites.net/download/source/, last access: 24 March 2023. 
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Short summary
Offline performance experiment results show that the GPU-HADVPPM on a V100 GPU can achieve up to 1113.6 × speedups to its original version on an E5-2682 v4 CPU. A series of optimization measures are taken, and the CAMx-CUDA model improves the computing efficiency by 128.4 × on a single V100 GPU card. A parallel architecture with an MPI plus CUDA hybrid paradigm is presented, and it can achieve up to 4.5 × speedup when launching eight CPU cores and eight GPU cards.