Novel features and GPU performance analysis for EM particle transport in the Celeritas code
Novel features and GPU performance analysis for EM particle transport in the Celeritas code
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Celeritas 代码中针对 EM 粒子传输的新颖功能和 GPU 性能分析
DOI：
10.1051/epjconf/202125103030
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发表时间：
2021
影响因子：
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通讯作者：
V. Pascuzzi
中科院分区：
文献类型：
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作者：
Seth R. Johnson;S. Tognini;P. Canal;T. Evans;S. Jun;G. Lima;Amanda Lund;V. Pascuzzi
Celeritas是为高能物理探测器的高性能模拟而设计的新型计算传输代码。这项工作描述了它目前的一些能力和设计选择，使高效的设备上物理的快速发展。支撑代码设计的抽象促进了不需要更改高级物理代码的低级性能调整。我们评估了一组独立的变化，这些变化共同产生了比原始GPU代码近40%的加速，在一个小型演示物理应用程序上，单个GPU在单个CPU上运行8.4M轨道的净性能提高了220倍。
Celeritas is a new computational transport code designed for high-performance simulation of high-energy physics detectors. This work describes some of its current capabilities and the design choices that enable the rapid development of efficient on-device physics. The abstractions that underpin the code design facilitate low-level performance tweaks that require no changes to the higher-level physics code. We evaluate a set of independent changes that together yield an almost 40% speedup over the original GPU code for a net performance increase of 220× for a single GPU over a single CPU running 8.4M tracks on a small demonstration physics app.