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首页> 外文期刊>Plasma physics and controlled fusion >Target normal sheath acceleration and laser wakefield acceleration particle-in-cell simulations performance on CPU & GPU architectures for high-power laser systems
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Target normal sheath acceleration and laser wakefield acceleration particle-in-cell simulations performance on CPU & GPU architectures for high-power laser systems

机译：针对高功率激光系统的CPU和GPU架构上的目标正常鞘加速度和激光韦克菲尔德加速粒子仿真性能

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摘要

We present an integrated study on the scalability and performance of particle-in-cell (PIC) code simulations on CPU and GPU architectures of high parallelization focused on target normal sheath acceleration (TNSA) and laser wakefield acceleration (LWFA) experiments. The developed models follow the experimental specifications of the high-power lasers systems hosted at the infrastructures of the Institute of Plasma Physics & Lasers of the Hellenic Mediterranean University in Crete, Greece and the Extreme Light Infrastructure - Nuclear Physics in Romania. The simulations are implemented on the High-Performance Computer for Advanced Research Information System of the Greek National Infrastructures for Research and Technology. Two representative experiments for TNSA and for LWFA are initially simulated by 2D models with the minimum computational resource demands and the results are used as a reference for the scalability and performance investigation. We further extend our study to 3D models aiming to reproduce the physics involved in both laser-plasma particle accelerators. A detailed analysis of the simulation results, accompanied with the computational demands, scalability and performance of the CPU and the GPU architectures, is provided. Our research findings highlight the key features and parameters of the physical and numerical models which drive simulations to converge to reliable results by means of physics, computational and runtime demands and shed light on their influence on the efficiency and performance of the PIC simulations.
机译：我们对CPU和GPU架构的粒子内（PIC）代码模拟的可扩展性和性能进行了综合研究，其高分化专注于目标正常鞘加速度（TNSA）和激光韦克菲尔德加速（LWFA）实验。开发的模型遵循在克里特岛，希腊希腊和极端轻型基础设施 - 罗马尼亚的克雷特地中海大学的等离子物理和激光器的基础设施中托管的高功率激光器系统的实验规范。在研究和技术的希腊国家基础设施高级研究信息系统的高性能计算机上实现了模拟。 TNSA和LWFA的两个代表性实验最初由2D模型模拟，具有最小计算资源需求，结果用作可扩展性和性能调查的参考。我们进一步扩展了我们的研究，以旨在再现激光 - 血浆粒子促进剂涉及的物理学的3D模型。提供了对仿真结果的详细分析，附带CPU和GPU架构的计算需求，可扩展性和性能和GPU架构。我们的研究发现突出了物理和数值模型的关键特征和参数，它通过物理学，计算和运行时需求和揭示了对PIC模拟的效率和性能的影响来汇编以汇编成可靠的结果。

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