CSR---EHS: Software-Modulated Fault Tolerance

CSR---EHS：软件调制容错

• 批准号: 0615250
• 负责人: David August
• 金额: $ 32万
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-07-01 至 2009-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0615250&HistoricalAwards=false
• 关键词: CSR; EHS; Software; Modulated; Fault

Microprocessor performance has been increasing exponentially due in large part to smaller and faster transistors enabled by improved fabrication technology. While such transistors yield performance enhancements, their lower threshold voltages and tighter noise margins make them less reliable, rendering processors that use them more susceptible to transient faults. While many fault-tolerance techniques have been proposed for high-end systems, the high hardware costs of these solutions make them impractical for the desktop and embedded computing markets.This work develops the concept of software-modulated fault tolerance (SMFT) to reduce the cost of reliability by taking advantage of naturally occurring non-uniformity in programs. By letting the system, the programmer, or even the user decide when and how to apply protection, the impact of fault tolerance can be adapted to best suit the needs of the constantly varying system. By increasing reliability only when warranted, SMFT frees up resources to either increase performance or reduce power. With the development of a set of profiler, compiler, and language techniques, this work allows designers to continue scaling processor performance for all markets despite the presence of transient faults.

微处理器的性能在很大程度上是由于改进的制造技术实现了较小且更快的晶体管。 尽管此类晶体管产生了性能的提高，但其较低的阈值电压和更紧密的噪声幅度使它们的可靠性降低，并渲染处理器，使用它们更容易受到短暂故障的影响。 尽管已经针对高端系统提出了许多容易耐受性的技术，但这些解决方案的高硬件成本使它们在台式机和嵌入式计算市场中不切实际。这项工作发展了软件修饰的承受能力（SMFT）的概念，以降低可靠性成本，以通过利用自然在程序中的非均匀性来降低可靠性。 通过让系统，程序员甚至用户决定何时以及如何应用保护，可以对容错的影响进行调整，以最适合不断变化的系统的需求。 SMFT仅在保证时提高可靠性，可以提高资源以提高性能或降低功率。 随着一组探查器，编译器和语言技术的发展，这项工作使设计人员尽管存在瞬时故障，但仍可以继续为所有市场扩展处理器性能。