关键词: 软错误, 故障传播, 崩溃, 体系结构正确执行, 动态依赖图

Abstract: Fault injection is a traditional approach to study the propagation of soft errors. However, applying this approach to study a large number of soft errors needs too much time. To attack this problem, this paper proposes an approach to analyze the propagation of soft errors and obtain their outcomes based on dynamic instructions. All possible soft errors are classified into the errors which are able to impact program outputs, and the errors which have no impact on program outputs by the architecturally correct execution analysis after dynamic instructions corresponding to the program are traced. An analysis model for the propagation of soft errors is constructed based on the dynamic de-pendency graph, and a crash model is also built. Based on them, an algorithm is put forward to analyze the propagation of given soft errors that have impact on the program outputs, and to predict crashes. The experimental results show that the proposed approach has lower false negative rate and costs less mean time for analyzing a soft error than the existing approach.

Key words: soft error, error propagation, crash, architecturally correct execution, dynamic dependency graph