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.

微处理器性能已经呈指数级增长，这在很大程度上是由于通过改进的制造技术实现的更小和更快的晶体管。 虽然这种晶体管产生性能增强，但它们的较低阈值电压和较紧的噪声容限使它们不太可靠，使使用它们的处理器更容易受到瞬态故障的影响。 虽然许多容错技术已被提出用于高端系统，这些解决方案的高硬件成本使他们不切实际的桌面和嵌入式computingmarket.This工作的软件调制容错（SMFT）的概念，以减少成本的可靠性，利用自然发生的非均匀性程序。 通过让系统、程序员甚至用户决定何时以及如何应用保护，可以调整容错的影响，以最好地适应不断变化的系统的需求。 通过仅在保证的情况下提高可靠性，SMFT释放了资源以提高性能或降低功耗。 随着一组分析器，编译器和语言技术的发展，这项工作允许设计人员继续扩展处理器性能的所有市场，尽管存在瞬时故障。