基于国产神威100PF系统的高性能算法库研究

High-performance scientific computing is facing challenges from both the rapid development of supercomputer hardware and the increasing needs of scientific computing applications. As the development of domestic 100PF systems, the study of highly efficient and scalable algorithms and software for large-scale scientific computing is becoming more and more urgent. Under the support of this major project, we have been conducting research on novel basic algorithms and efficient implementation techniques in fluid-structure interaction, climate and weather prediction, HPCG, etc, in which some have scaled to over a million cores or even full-system scale of 3,120,000 cores on Tianhe-2. In addition, we have a solid research background in the PHG scientific computing software and the WeXML domestic mathematical library. Based on the above facts, this proposal intends to promote the relevant research achievements, making the most of the advantage in the previous research of scientific computing software, to further develop and integrate several representative novel basic algorithms for scientific computing and to study key techniques on the implementation of the algorithms on the domestic ShenWei 100PF supercomputer. Through the research of this project, we expect to form a novel domestic algorithm library that supports large-scale scientific computing applications such as the fluid-struction interaction, the climate and weather prediction, etc with the scalability of multi-million cores and beyond.

高性能科学计算面临着来自超级计算机硬件发展和科学计算应用需求的双重挑战。随我国国产100PF异构超算系统的研制和推广，具有支撑大型科学计算能力的高效算法和软件的研究迫在眉睫。受重大计划支持，我们前期已在流固耦合、气候气象、HPCG优化等领域开展了若干科学计算新型基础算法和高效实现技术的研究，个别问题已经在天河2上实现100万核级乃至整机312万核可扩展，构成了集成研究的必要条件。此外，参研单位还在PHG科学计算软件包和WeXML国产数学库软件方面有前期积累。鉴此，本项目旨在凝练和升华重大计划相关研究成果，充分发挥参研单位在并行算法和软件方面等方面的研究优势，立足于国产神威100PF超级计算机，集成和发展若干高性能科学计算新型基础算法，通过开展算法在国产平台上的高效实现关键技术研究，形成高性能基础算法库，并在流固耦合、气候气象等领域形成示范应用，实现数百、上千万核的高可扩展计算。

本项目主要针对国产神威100PF系统——“神威•太湖之光”超级计算机的体系结构特征，开展算法高效实现中的一系列核心关键技术研究，形成国产高性能基础算法库，支撑气候气象、地震波、流固耦合等重点应用领域中典型问题的大规模模拟，同时为国产超算系统的研制提供有价值的参考建议。经过三年时间，项目团队共发表学术论文65篇，申请发明专利4项，获批软件著作权2项，获得包括“戈登•贝尔”奖在内的各类科研奖励共15项，顺利完成了项目计划书中的既定研究任务。

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