A GPU accelerated Boussinesq-type model for coastal waves

Kezhao Fang; Jiawen Sun; Guangchun Song; Gang Wang; Hao Wu; Zhongbo Liu

doi:10.1007/s13131-022-2004-6

Volume 41 Issue 9

Aug. 2022

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Article Navigation > Acta Oceanologica Sinica > 2022 > 41(9): 158-168

Kezhao Fang, Jiawen Sun, Guangchun Song, Gang Wang, Hao Wu, Zhongbo Liu. A GPU accelerated Boussinesq-type model for coastal waves[J]. Acta Oceanologica Sinica, 2022, 41(9): 158-168. doi: 10.1007/s13131-022-2004-6

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Kezhao Fang, Jiawen Sun, Guangchun Song, Gang Wang, Hao Wu, Zhongbo Liu. A GPU accelerated Boussinesq-type model for coastal waves[J]. Acta Oceanologica Sinica, 2022, 41(9): 158-168. doi: 10.1007/s13131-022-2004-6

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A GPU accelerated Boussinesq-type model for coastal waves

doi: 10.1007/s13131-022-2004-6

Kezhao Fang^{1, 2},
Jiawen Sun^{1, 2
,
,},
Guangchun Song¹,
Gang Wang³,
Hao Wu^{1, 2},
Zhongbo Liu⁴

1.
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
2.
National Marine Environmental Monitoring Center, Dalian 116023, China
3.
Marine Geological Resources Survey Center of Hebei Province, Qinhuangdao 066001, China
4.
College of Transportation Engineering, Dalian Maritime University, Dalian 116026, China

Funds: The National Key Research and Development Program under contract No. 2019YFC1407700; the National Natural Science Foundation of China under contract Nos 51779022, 52071057 and 51809053.

More Information

Corresponding author: E-mail: jwsun@nmemc.org.cn
Received Date: 2021-09-02
Accepted Date: 2022-02-14

Available Online: 2022-08-03

Publish Date: 2022-08-31

Abstract

Abstract

This study presents an efficient Boussinesq-type wave model accelerated by a single Graphics Processing Unit (GPU). The model uses the hybrid finite volume and finite difference method to solve weakly dispersive and nonlinear Boussinesq equations in the horizontal plane, enabling the model to have the shock-capturing ability to deal with breaking waves and moving shoreline properly. The code is written in CUDA C. To achieve better performance, the model uses cyclic reduction technique to solve massive tridiagonal linear systems and overlapped tiling/shared memory to reduce global memory access and enhance data reuse. Four numerical tests are conducted to validate the GPU implementation. The performance of the GPU model is evaluated by running a series of numerical simulations on two GPU platforms with different hardware configurations. Compared with the CPU version, the maximum speedup ratios for single-precision and double-precision calculations are 55.56 and 32.57, respectively.
- Boussinesq model,
- GPU,
- speedup ratio,
- coastal waves

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References(27)

References

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