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Handling of transient and permanent faults in dynamically scheduled super-scalar processors

机译：动态调度的超标量处理器中的瞬时和永久故障的处理

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摘要

This article describes architectural extensions for a dynamically scheduled processor to enable three different operation modes, ranging from high-performance, to high-reliability. With minor extensions of the control path, the resources of the super-scalar data-path can be used either for high-performance execution, fail-safe-operation, or fault-tolerant-operation. Furthermore, the online error-correction capabilities are combined with reconfiguration techniques for permanent fault handling. This reconfiguration can take defective components out of operation permanently, and can be triggered on-demand during runtime, depending on the frequency of online corrected faults. A comprehensive fault simulation was carried out in order to evaluate hardware overhead, fault coverage and performance penalties of the proposed approach. Moreover, the impact of the permanent reconfiguration regarding the reliability and performance is investigated.
机译：本文介绍了动态调度处理器的体系结构扩展，以启用从高性能到高可靠性的三种不同的操作模式。通过对控制路径进行较小的扩展，超标量数据路径的资源可以用于高性能执行，故障安全操作或容错操作。此外，在线纠错功能与重新配置技术相结合，可用于永久性故障处理。这种重新配置可以使有故障的组件永久停止运行，并可以在运行时按需触发，具体取决于在线纠正故障的频率。为了评估所提出方法的硬件开销，故障覆盖率和性能损失，进行了全面的故障仿真。此外，研究了永久性重新配置对可靠性和性能的影响。

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