On-line sensing for healthier FPGA systems
On-line sensing for healthier FPGA systems
复制标题
在线传感让 FPGA 系统更健康
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
J. Hayes
中科院分区：
文献类型：
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作者：
K. Zick;J. Hayes
电子系统越来越多地受到组件变化、热热点、不均匀磨损和其他微妙物理现象的影响。基于FPGA的系统有独特的机会来适应这种影响。然而，所需要的是用于感测物理参数的低成本、细粒度的方法。本文提出了一种方法，包括一个紧凑的多用途传感器实现的可重构逻辑，仪表的应用程序的方法，并增强测量程序的在线检测。该传感器采用高效计数器和改进的环形振荡器，仅需8个LUT。我们描述了如何测量延迟，静态功率，动态功率和温度的变化。我们证明了所提出的方法与基于Virtex-5的实验系统。该系统配备了100多个传感器，总开销仅为1.3%。来自热控制实验的结果提供了一些令人惊讶的见解，并说明了该方法的强大功能。在线传感可以帮助打开物理自适应计算的大门，包括基于FPGA的系统的细粒度电源，可靠性和健康管理方案。
Electronic systems increasingly suffer from component variation, thermal hotspots, uneven wearout, and other subtle physical phenomena. Systems based on FPGAs have unique opportunities for adapting to such effects. Required, however, is a low-cost, fine-grained method for sensing physical parameters. This paper presents an approach to on-line sensing that includes a compact multi-use sensor implemented in reconfigurable logic, methods for instrumenting an application, and enhanced measurement procedures. The sensor utilizes a highly-efficient counter and improved ring oscillator, and requires just 8 LUTs. We describe how to measure variations in delay, static power, dynamic power, and temperature. We demonstrate the proposed approach with an experimental system based on a Virtex-5. The system is instrumented with over 100 sensors with a total overhead of only 1.3%. Results from thermally-controlled experiments provide some surprising insights and illustrate the power of the approach. On-line sensing can help open the door to physically-adaptive computing, including fine-grained power, reliability, and health management schemes for FPGA-based systems.