关键词: 容错, 周期优化, 检查点, 计算流体力学, 开发框架

Abstract: For the fault-tolerance shortage of CFD (Computational Fluid Dynamics)-oriented application development framework, a new fault-tolerance period optimization method was proposed. The method computed the ideal best fault-tolerance period based on the probability model of system's faults, and online determined the occasion of real check points with the consideration of CFD fields output characteristic. The experimental results of three applications show that on the systems with different mean time between faults, compared with the fault-tolerance method based on performing fault-tolerance between fixed steps, the proposed method can always get the best fault-tolerance overheads. Based on this method, user can set the fault-tolerance period with framework interfaces conveniently and reduce the fault-tolerance overheads.

Key words: fault-tolerance, period optimization, check point, Computational Fluid Dynamics (CFD), development framework