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首页> 外文期刊>Annals of nuclear energy >Investigation of the efficiency optimization for the improved subgroup resonance self-shielding treatment on the GPU platform
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Investigation of the efficiency optimization for the improved subgroup resonance self-shielding treatment on the GPU platform

机译：对GPU平台改进子组共振自屏自屏蔽效率优化的研究

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摘要

The improved subgroup method adopts a fine energy mesh to handle the resonance interference effect, then the neutron slowing-down equation is solved for group condensation to obtain the multigroup cross section. A large calculating burden is raised in this process. In this paper, an acceleration scheme by the multigroup kernel method is investigated on both GPU and CPU platform. First, the subgroup fixed source and the neutron slowing-down equations are both defined to multigroup kernels to prevent the repetitive MOC sweep, and the group batch is introduced to save the memory usage. Then, the resonance treatment code is developed on the CPU/GPU heterogeneous clusters. Finally, the efficiency between the multigroup kernel and conventional group-by-group method is compared. The numerical verification shows that the multigroup kernel method in the GPU platform could effectively accelerate the solutions of both subgroup fixed source and neutron slowing-down equations. (C) 2021 Elsevier Ltd. All rights reserved.
机译：改进的子组方法采用精细能量啮合来处理谐振干扰效果，然后解决中子减速方程用于组冷凝以获得多群横截面。在这个过程中提出了大量的计算负担。本文在GPU和CPU平台上研究了Multigroup内核方法的加速方案。首先，子组固定源和中子减速方程都定义为Multigroup内核，以防止重复的MOC扫描，并引入组批次以节省内存使用情况。然后，在CPU / GPU异构簇上开发共振处理代码。最后，比较了Multigroup内核和传统逐组方法之间的效率。数值验证表明，GPU平台中的Multigroup内核方法可以有效地加速子组固定源和中子减速方程的解决方案。 （c）2021 elestvier有限公司保留所有权利。

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  • 来源
    《Annals of nuclear energy》 |2021年第9期|108318.1-108318.15|共15页
  • 作者

    Li Song; Zhang Qian; Zhang Zhijian; Song Peitao; Liang Liang; Zhao Qiang;

  • 作者单位

    Harbin Engn Univ Fundamental Sci Nucl Safety & Simulat Technol Lab Coll Nucl Sci & Technol 145 Nantong St Harbin 150001 Heilongjiang Peoples R China;

    Harbin Engn Univ Fundamental Sci Nucl Safety & Simulat Technol Lab Coll Nucl Sci & Technol 145 Nantong St Harbin 150001 Heilongjiang Peoples R China;

    Harbin Engn Univ Fundamental Sci Nucl Safety & Simulat Technol Lab Coll Nucl Sci & Technol 145 Nantong St Harbin 150001 Heilongjiang Peoples R China;

    Harbin Engn Univ Fundamental Sci Nucl Safety & Simulat Technol Lab Coll Nucl Sci & Technol 145 Nantong St Harbin 150001 Heilongjiang Peoples R China;

    Harbin Engn Univ Fundamental Sci Nucl Safety & Simulat Technol Lab Coll Nucl Sci & Technol 145 Nantong St Harbin 150001 Heilongjiang Peoples R China;

    Harbin Engn Univ Fundamental Sci Nucl Safety & Simulat Technol Lab Coll Nucl Sci & Technol 145 Nantong St Harbin 150001 Heilongjiang Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Resonance self-shielding; Subgroup method; Neutron slowing-down; Method of characteristics; GPU acceleration;

    机译：共振自我屏蔽;亚组方法;中子减速;特征方法;GPU加速;

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