Abstract
Fresh groundwater reserves, being of vital importance for more than a billion of people living in the coastal zone, are being threatened by saltwater intrusion due to anthropogenic activities and climate change. High resolution three-dimensional (3D), variable-density (VD), groundwater flow and salt transport (FT) numerical models are increasingly being used to support water managers and decision makers in their strategic planning and measures for dealing with the problem of fresh water shortages. However, these computer models typically require long runtimes and large memory usage, making them impractical to use without parallelization. Here, we parallelize SEAWAT, and show that with our parallelization 3D-VD-FT modeling is now feasible for a wide range of hydrogeologists, since a) speedups of more than two orders of magnitude can be obtained as illustrated in this paper, and b) large 3D-VD-FT models are feasible with memory requirements far exceeding single machine memory.
Original language | English |
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Article number | 103976 |
Pages (from-to) | 1-13 |
Number of pages | 13 |
Journal | Advances in Water Resources |
Volume | 154 |
DOIs | |
Publication status | Published - Aug 2021 |
Bibliographical note
Funding Information:We thank Christian D. Langevin and Joseph D. Hughes for their suggestions and comments on parallelization SEAWAT. We also thank Deltares and Utrecht University for making this research possible. This work was part of the development of iMOD WQ (https://oss.deltares.nl/nl/web/imod) and we thank Gijs Janssen for his support. Furthermore, we thank Edwin Sutanudjaja and Martijn Russcher for their support on running jobs on Cartesius. All experiments were carried out on the Dutch national e-infrastructure with the support of the SURF Cooperative. The authors also would like to thank the editor and two anonymous reviewers for their valuable comments and suggestions.
Publisher Copyright:
© 2021 Elsevier Ltd
Funding
We thank Christian D. Langevin and Joseph D. Hughes for their suggestions and comments on parallelization SEAWAT. We also thank Deltares and Utrecht University for making this research possible. This work was part of the development of iMOD WQ (https://oss.deltares.nl/nl/web/imod) and we thank Gijs Janssen for his support. Furthermore, we thank Edwin Sutanudjaja and Martijn Russcher for their support on running jobs on Cartesius. All experiments were carried out on the Dutch national e-infrastructure with the support of the SURF Cooperative. The authors also would like to thank the editor and two anonymous reviewers for their valuable comments and suggestions.
Keywords
- Distributed memory
- Numerical modelling
- Parallel computing
- Salt transport
- SEAWAT
- Variable-density groundwater flow