Tolerating transient faults in MARS

[1990] Digest of Papers. Fault-Tolerant Computing: 20th International Symposium Pub Date : 1990-06-26 DOI:10.1109/FTCS.1990.89384

H. Kopetz, H. Kantz, G. Grünsteidl, P. Puschner, J. Reisinger

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引用次数: 87

Abstract

The concepts of transient fault handling in the MARS architecture are discussed. After an overview of the MARS architecture, the mechanisms for the detection of transient faults are discussed in detail. In addition to extensive checks in the hardware and in the operating system, time-redundant execution of application tasks is proposed for the detection of transient faults. The time difference between the effective and the maximum execution time of an application task is used for this purpose. Whenever a transient fault has been detected, the affected component is turned off and reintegrated immediately by retrieving the uncorrupted state of the actively redundant partner component. In order to reduce the probability of spare exhaustion (in the case of permanent faults) 'shadow components' are introduced. The reliability improvement, which can be realized by these techniques, is calculated by detailed reliability models of the architecture, where the parameters are based on experimental results measured on the present MARS prototype implementation.<>

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容忍火星瞬态故障

讨论了MARS体系结构中瞬态故障处理的概念。在概述了MARS体系结构之后，详细讨论了瞬态故障检测的机制。除了在硬件和操作系统中进行广泛的检查外，还提出了应用程序任务的时间冗余执行，以检测瞬态故障。应用程序任务的有效执行时间和最大执行时间之间的时间差用于此目的。每当检测到临时故障时，受影响的组件将被关闭，并通过检索主动冗余伙伴组件的未损坏状态立即重新集成。为了减少备用耗尽的概率(在永久性故障的情况下)引入了“影子组件”。这些技术所能实现的可靠性改进是通过详细的体系结构可靠性模型来计算的，其中的参数是基于在目前的MARS原型实现上测量的实验结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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[1990] Digest of Papers. Fault-Tolerant Computing: 20th International Symposium

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