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.

淡水储备对生活在沿海地区的超过 10 亿人至关重要，但由于人为活动和气候变化而受到咸水入侵的威胁。高分辨率三维 (3D)、可变密度 (VD)、地下水流和盐分运移 (FT) 数值模型越来越多地被用于支持水资源管理者和决策者的战略规划和应对淡水问题的措施。水资源短缺。然而，这些计算机模型通常需要很长的运行时间和大量的内存使用，这使得在没有并行化的情况下使用它们是不切实际的。在这里，我们并行化 SEAWAT，并表明通过我们的并行化 3D-VD-FT 建模现在对广泛的水文地质学家来说是可行的，