地下水流动模拟在多gpu上的并行化

Proceedings of the 3rd International Conference on High Performance Compilation, Computing and Communications Pub Date : 2019-03-08 DOI:10.1145/3318265.3318271

Ho-Sung Sun, Xiaohui Ji, Xu-sheng Wang

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引用次数: 1

摘要

GPU在地下水流动模拟中得到了应用。为了进一步提高GPU地下水模拟的性能，本文研究了在多个GPU上并行化三维地下水流动模拟的方法。地下水流动模拟中最耗时的部分是求解方程，在多个gpu上并行化。将PCG求解器并行化求解方程。为了最大限度地提高并行PCG的通信效率，采用了减少不必要的数据通信和通信与计算重叠的优化方法。使用6块NVIDIA K40m gpu进行的实验测试表明，稳态模拟时PCG求解器和地下水流动模拟的最大加速分别可达36.3和11。

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Parallelization of groundwater flow simulation on multiple GPUs

GPU has been applied in groundwater flow simulation. In order to improve the performance of the GPU groundwater simulation further, this paper studied the method of parallelizing three-dimensional groundwater flow simulation on multiple GPUs. The most time-consuming part in the groundwater flow simulation, solving equations, is parallelized on multiple GPUs. The PCG solver is parallelized to solve equations. To maximize the communication efficiency of the parallelized PCG, optimizations that reduce the unnecessary data communication and overlap the communication with calculation were used. Experimental tests using 6 NVIDIA K40m GPUs show that the maximum speedup of the PCG solver and the groundwater flow simulation is up to 36.3 and 11 respectively for a steady-state simulation.

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Proceedings of the 3rd International Conference on High Performance Compilation, Computing and Communications

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