Journal
ENVIRONMENTAL MODELLING & SOFTWARE
Volume 101, Issue -, Pages 64-72Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envsoft.2017.12.004
Keywords
Groundwater modelling; Unconfined aquifers; Heterogeneous and anisotropic media; High-performance computing; CUDA (TM)
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Funding
- CNPq [460329/2014-6]
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The application of computer simulation models plays a significant role in the understanding of water dynamics in basins. The recent and explosive growth of the processing capabilities of General-Purpose Graphics Processing Units (GPGPUs) has resulted in widespread interest in parallel computing from the modelling community. In this paper, we present a GPGPU implementation of finite-differences solution of the equations of the 2D groundwater flow in unconfined aquifers for heterogeneous and anisotropic media. We show that the GPGPU-accelerated solution implemented using CUDA(1) C/C++ largely outperforms the corresponding serial solution in C/Cthornthorn. The results show that the GPGPU-accelerated implementation is capable of providing up to a 56-fold speedup in the solution using an ordinary office computer equipped with an inexpensive GPU(2) card. The code developed for this research is available for download and use at http://modelagemambientaluffs.blogspot.com.br/. (C) 2017 Elsevier Ltd. All rights reserved.
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