基于占用率的体系结构脆弱因子在线计算方法

发布时间：2018-10-16 13:32

【摘要】：随着CMOS工艺的不断进步,单个芯片上集成的晶体管数目快速增长,使得由高能粒子和α粒子辐射产生的软错误逐渐成为影响微处理器可靠性的重要因素。通过计算体系结构脆弱因子,量化分析软错误对微处理器中不同结构的影响,已成为指导微处理器容错设计、提高系统可靠性的重要方法。体系结构脆弱因子在线计算方法,利用体系结构脆弱因子随应用程序运行而变化的特点,指导动态选择容错技术,实现可靠性与性能之间的平衡。在对已有方法分析的基础上,提出一种基于占用率的体系结构脆弱因子在线计算方法,并在Sim-Alpha模拟器上进行验证。通过运行SPEC CPU2000基准测试程序,计算发射队列、重命名缓冲和存取队列的体系结构脆弱因子。实验结果表明,该方法能有效计算微处理器中不同结构的体系结构脆弱因子,与离线计算方法相比,发射队列、重排序缓存和存取队列三个体系结构脆弱因子的平均绝对误差仅为0.10、0.01和0.039。
[Abstract]:With the development of CMOS technology, the number of transistors integrated on a single chip increases rapidly, which makes the soft errors caused by the radiation of high energy particles and 伪 particles gradually become an important factor affecting the reliability of microprocessors. By calculating the frailty factor of architecture and analyzing quantitatively the influence of soft error on different structure of microprocessor, it has become an important method to guide the fault tolerant design of microprocessor and improve the reliability of the system. Based on the characteristics of architecture vulnerability factor changing with application running, the on-line calculation method of architecture vulnerability factor is used to guide dynamic selection of fault-tolerant technology to achieve the balance between reliability and performance. Based on the analysis of the existing methods, an on-line calculation method of vulnerability factor of architecture based on occupancy is proposed and verified on Sim-Alpha simulator. By running the SPEC CPU2000 benchmark program, the architectural frailty factors of transmit queues, renamed buffers and access queues are calculated. The experimental results show that the proposed method can effectively calculate the frailty factors of different architectures in microprocessors. The average absolute errors of the vulnerability factors of the three architectures of resort cache and access queue are only 0. 10 / 0. 01 and 0. 039.
【作者单位】：国网湖南省电力公司信息通信公司;中国科学院计算技术研究所;
【基金】：国家973计划资助项目(2011CB302503)
【分类号】：TP332

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