The application of GPU accelerated tidal model to two-dimensional hydrodynamic numerical simulation of archipelago

In this work, an unstructured grid finite volume method accelerated with GPU parallel algorithm (GPU-OM) ocean model is developed.The model is implemented to simulate the tidal current situation in the Changshan archipelago water area.Simulate result shows that the GPU-OM can accurate simulate the water with complex shoreline and topography.In addition, the parallel acceleration of GPU-OM, FVCOM and MIKE21 are compared.The performance of GPU-OM executed on Tesla K20X is much better than that of FVCOM with 32 threads and MIKE 21 with 48 threads.