超级计算环境容错机制

中国科学院超级计算环境是整合了包括总中心、分中心和所级中心计算资源的3层架构超级计算环境.为提升超级计算环境的可靠性，提供稳定、可靠的计算服务，其容错机制的研究成为超级计算环境的一个研究重点.在对容错基本思想及各类计算机容错技术进行充分调研的基础上，提出一种适用于超级计算环境的容错框架，依据该框架给出了不同层次的容错方案，并对不同层次的容错开销进行了分析和比较，验证了不同层次容错方案对应用程序所带来的影响.

Fault-Tolerant Mechanism in Supercomputing Environment

The three layers supercomputing environment of Chinese Academy of Sciences is built to integrate the computing resources of the head center in Beijing, eight regional centers and several campus-level centers. To enhance the reliability of the supercomputing environment and provide stable and reliable computing services, the fault-tolerant mechanism research has become a research priority of the supercomputing environment. In this paper, the fault-tolerant basic concepts and computer fault-tolerant technologies are introduced at first. Next, a fault-tolerant framework of the supercomputing environment is proposed. Then the fault-tolerant solutions of different levels based on the framework and the performance test results in Deepcomp 7000 are presented. Finally, the fault-tolerant overheads of different levels are compared and analyzed to verify the impact on the application.