Transformative Petascale Particle-In-Cell Simulations

变革性千万亿次细胞内粒子模拟

• 批准号: 1614949
• 负责人: Warren Mori
• 金额: $ 1.23万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-05-01 至 2017-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1614949&HistoricalAwards=false
• 关键词: Transformative; Petascale; Particle; Cell; Simulations

This project will use Blue Waters to enable transformative simulations that will answer several compelling science questions in plasma physics. These questions include: 1. Can laser plasma instabilities be controlled or even harnessed in inertial fusion plasmas? 2. What are the collective processes responsible for the formation of shocks in collisionless plasmas, 3.Can plasma-based acceleration be the basis of new compact accelerators for use at the energy frontier, in medicine, in probing materials, and in novel light sources?The project will use a suite of fully kinetic plasma simulation tools developed by the team to answer these questions. In particular, the plasma simulation tools are based on particle-in-cell (PIC) methods which have been successful in exploring a wide range of frontier topics. Four distinct parallel PIC codes, with varying degrees of physics approximations, will be used in the project. All the codes are highly optimized on a single processor and have very high parallel efficiency.In terms of the broader impact of the project, the PIC codes developed by the project could potentially be used to make scientific discoveries that impact diverse fields beyond the current investigation with significant societal impact such as high-energy physics, fusion energy, and reliability of communication satellites. Additionally, the programming abstractions developed for porting scientific codes to future massively parallel architectures will impact many others areas of scientific computing and identifying these abstractions are the first steps for possibly automating the process. Finally, the proposed research will synergize with the new NSF funded Particle-in-Cell and Kinetic Simulation Software Center (PICKSC) at UCLA and the Institute for Digital Research and Education (IDRE). This will allow results to broadly impact research and education within the plasma particle-in-cell community and the computational science community at UCLA. The PI is currently the director of both PICKSC and IDRE.

该项目将使用Blue Waters进行变革性模拟，以回答等离子体物理学中几个引人注目的科学问题。这些问题包括：1。激光等离子体的不稳定性能否在惯性聚变等离子体中得到控制甚至利用？2. 2 .在无碰撞等离子体中形成激波的集体过程是什么？基于等离子体的加速能否成为用于能源前沿、医学、探测材料和新型光源的新型紧凑型加速器的基础？该项目将使用一套由该团队开发的全动力学等离子体模拟工具来回答这些问题。特别是，等离子体模拟工具是基于粒子在细胞（PIC）方法，已经成功地探索了广泛的前沿课题。四种不同的并行PIC代码，具有不同程度的物理近似，将在项目中使用。所有代码都在单个处理器上进行了高度优化，具有很高的并行效率。就该项目的更广泛影响而言，该项目开发的PIC代码可能会被用于做出科学发现，这些发现会影响到当前调查之外的不同领域，并产生重大的社会影响，如高能物理、核聚变能和通信卫星的可靠性。此外，为将科学代码移植到未来大规模并行体系结构而开发的编程抽象将影响科学计算的许多其他领域，识别这些抽象是可能实现该过程自动化的第一步。最后，拟议的研究将与加州大学洛杉矶分校的新NSF资助的细胞内粒子和动力学模拟软件中心（PICKSC）和数字研究与教育研究所（IDRE）协同工作。这将使结果广泛影响加州大学洛杉矶分校细胞内等离子体粒子社区和计算科学社区的研究和教育。PI目前是PICKSC和IDRE的董事。