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首页> 外文期刊>Atmospheric and oceanic optics >Monte Carlo Simulation of the Solar Radiation Transfer in a Cloudy Atmosphere with the Use of Graphic Processor and NVIDIA CUDA Technology
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Monte Carlo Simulation of the Solar Radiation Transfer in a Cloudy Atmosphere with the Use of Graphic Processor and NVIDIA CUDA Technology

机译：Monte Carlo在多云的氛围中使用图形处理器和NVIDIA CUDA技术模拟了太阳辐射转移的仿真

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摘要

Problems of improving the efficiency of the Monte Carlo numerical simulation of solar radiation propagation in the Earth’s atmosphere by transition from sequential to parallel computations are discussed. A new parallel algorithm oriented to a computational system with the NVIDIA CUDA enabled graphics processor is presented. The efficiency of parallelization is analyzed by an example of calculating the upward and downward fluxes of solar radiation both in a vertically homogeneous and in an inhomogeneous model of the atmosphere. The results of testing the new algorithm under various atmospheric conditions including continuous single-layered and multilayered cloudiness are presented, with allowance for selective molecular absorption and without regard to it. The results of testing the code using video cards with different computational capabilities are analyzed. It is shown that the changeover of computing from conventional PCs to the architecture of graphics processors gives more than a hundredfold increase in performance and fully reveals the capabilities of the technology used.
机译：讨论了通过从顺序到并行计算转换到地球大气中太阳辐射传播的蒙特卡罗数值模拟的效率问题。提出了一种具有NVIDIA CUDA的计算系统的新的并行算法，已启用NVIDIA CUDA的图形处理器。通过在垂直均匀和大气的不均匀模型中计算太阳辐射的向上和向下助熔剂的示例来分析并行化的效率。介绍了在各种大气条件下测试新算法的结果，包括连续单层和多层浑浊，具有选择性分子吸收的余量，而不考虑其。分析使用具有不同计算能力的视频卡测试代码的结果。结果表明，从传统PC计算到图形处理器的架构的转换，表现出超过百倍的性能，并完全揭示所用技术的能力。

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