赵旭东,梁书秀,孙昭晨,刘忠波,韩松林,任喜峰.基于GPU并行算法的水动力数学模型建立及其效率分析[J].,2014,54(2):204-209 |
基于GPU并行算法的水动力数学模型建立及其效率分析 |
Foundation and analysis of computational efficiency for hydrodynamic model based on GPU parallel algorithm |
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DOI:10.7511/dllgxb201402008 |
中文关键词: GPU 非结构化网格 水动力模型 |
英文关键词: graphic processing unit (GPU) unstructured grid hydrodynamic model |
基金项目:国家自然科学基金资助项目(51221961);创新研究群体科学基金资助项目(51221961). |
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中文摘要: |
应用非结构化网格建立水动力模型目前已经得到了广泛的应用.针对在网格数过多,且无集群机情况下难以快速获得计算结果这一问题,基于GPU的高性能计算技术,在CUDA开发平台下设计并行算法,建立非结构化网格的二维水动力模型.与利用GTX460显卡和集群机的计算效率对比表明,在保持计算精度的前提下,速度提升了一个量级,且随着网格数的持续递增,可以保持较高的加速比增幅,比较适合应用于大范围海域的水动力模型的数值计算. |
英文摘要: |
Unstructured grid has been widely used to establish hydrodynamic models. To rapidly get the calculation results without a cluster when the number of computational grids is too large, a high-performance computing technology which is based on GPU (graphic processing unit), is adopted to design a parallel algorithm and establish a 2D unstructured grid hydrodynamic model on CUDA (compute unified device architecture) development platform. Through the comparisons to the computational efficiency of a cluster and the Graphic Card of GTX460, the advantages of GPU method are confirmed: the speedup ratio can reach more than 10 times and maintain a high growth as the increase of the number of computational grids. It is suitable for the numerical simulation of large-domain hydrodynamic models. |
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