Collaborative Research:Framework:Software:NSCI:Enzo for the Exascale Era (Enzo-E)

合作研究：框架：软件：NSCI：Exascale时代的Enzo（Enzo-E）

• 批准号: 1835426
• 负责人: Brian O'Shea
• 金额: $ 48.01万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-01 至 2023-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1835426&HistoricalAwards=false
• 关键词: Collaborative; Research; Framework; Software; NSCI

The earliest stages of the formation of galaxies and quasars in the universe are soon to be explored with a powerful new generation of ground and space-based observatories. Broad and deep astronomical surveys of the early universe beginning in the next decade using the Large Synoptic Survey Telescope and the James Webb Space Telescope will revolutionize our understanding of the origin of galaxies and quasars, and help constrain the nature of the dark matter which is the dominant matter constituent in the universe. Detailed physical simulations that model the formation of these objects are an indispensible aid to understanding the coming glut of observational data, and to maximize the scientific return of these instruments. In this project, PIs at the Univ. California San Diego, Columbia Univ., Georgia Tech, and Michigan State Univ. are collaborating with the goal of developing a next generation community simulation software framework for the coming generation of supercomputers for cosmological simulations of the young universe. Undergraduate and graduate students will be directly involved in the software development as well as its application to several frontier cosmological research topics. The software framework that will be produced will be disseminated as open source software to enable a much broader range of scientific explorations of astrophysical topics. The project brings together the key developers of the open source Enzo adaptive mesh refinement (AMR) hydrodynamic cosmology code, who will port its software components to a newly developed AMR software framework called Cello. Cello implements the highly scalable array-of-octrees AMR algorithm on top of the powerful Charm++ parallel object system. Designed to be extensible and scalable to millions of processors, the new framework, called Enzo-E, will target exascale high performance computing (HPC) systems of the future. Through this project, the entire Enzo community will have a viable path to exascale simulations of unprecedented size and scope. The PIs have chosen three frontier problems in cosmology to drive the development of the Enzo-E framework: (1) the assembly of the first generation of stars and black holes into the first galaxies; (2) the role of cosmic rays in driving galactic outflows; and (3) the evolution of the intergalactic medium from cosmic dawn to the present day. Annual developer workshops and software releases will keep the broader research community informed and involved in the developments.This project is supported by the Office of Advanced Cyberinfrastructure in the Directorate for Computer & Information Science & Engineering and the Division of Astronomical Sciences in the Directorate of Mathematical and Physical Sciences.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

宇宙中星系和类星体形成的最早阶段很快将通过强大的新一代地面和天基观测站进行探索。下一个十年开始，使用大型综合巡天望远镜和詹姆斯·韦伯太空望远镜对早期宇宙进行广泛而深入的天文观测，将彻底改变我们对星系和类星体起源的理解，并有助于限制暗物质的性质。宇宙中的主要物质成分。对这些物体的形成进行建模的详细物理模拟对于理解即将到来的观测数据过剩以及最大限度地提高这些仪器的科学回报是不可或缺的帮助。在这个项目中，大学的 PI。加州圣地亚哥、哥伦比亚大学、佐治亚理工学院和密歇根州立大学。正在合作，目标是为下一代超级计算机开发下一代社区模拟软件框架，用于年轻宇宙的宇宙学模拟。本科生和研究生将直接参与软件开发及其在多个前沿宇宙学研究课题中的应用。 将生成的软件框架将作为开源软件进行传播，以实现更广泛的天体物理主题的科学探索。该项目汇集了开源 Enzo 自适应网格细化 (AMR) 流体动力学宇宙学代码的主要开发人员，他们将其软件组件移植到新开发的名为 Cello 的 AMR 软件框架中。 Cello 在强大的 Charm++ 并行对象系统之上实现了高度可扩展的八叉树数组 AMR 算法。这个名为 Enzo-E 的新框架旨在可扩展和扩展至数百万个处理器，将面向未来的百亿亿次高性能计算 (HPC) 系统。通过这个项目，整个 Enzo 社区将拥有一条可行的途径来实现前所未有的规模和范围的百亿亿次模拟。 PI们选择了宇宙学中的三个前沿问题来推动Enzo-E框架的发展：（1）第一代恒星和黑洞组装成第一代星系； (2) 宇宙射线在驱动银河外流中的作用； (3)从宇宙黎明到今天的星系际介质的演化。年度开发者研讨会和软件发布将使更广泛的研究界了解情况并参与开发。该项目得到了计算机与信息科学与工程局高级网络基础设施办公室和数学局天文科学部的支持该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。