IBM z15中的主动电源管理

IF 1.3 4区 计算机科学 Q1 Computer Science
T. Webel;P. M. Lobo;T. Strach;P. B. Parashurama;S. Purushotham;R. Bertran;A. Buyuktosunoglu
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引用次数: 8

摘要

与z14处理器相比,IBM z15处理器的电源管理增强了几种片上电源管理技术,特别注重减少电压下降管理的响应时间。IBM z15处理器特别强调主动电压下降管理策略,以减少添加到电源电压的保守静态保护带,从而防止最坏情况下的电压下降。z15处理器依赖于从深度流水线处理器的早期阶段中选择的事件作为指示符,以预测短时间内功耗的急剧变化。所选事件的早期信息允许节流通过处理器管线的执行流,并在功率急剧变化发生之前防止功率急剧变化,从而减少电压下降。在z15中,作为主动方案之一,我们将数字功率代理(处理器活动的直接指示器)和关键路径监视器(CPM)结合起来,以更早地主动指示电压下降事件。该主动指示为节气门致动电路提供了足够的时间来防止电压下降。CPM充当实时定时裕度指示器,功率代理充当活动监视器。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Proactive power management in IBM z15
The IBM z15 processor power management enhances several on-chip power management techniques over z14 processor with a specific focus on reducing response time for voltage droop management. The IBM z15 processor puts a specific emphasis on proactive voltage droop management strategy to reduce conservative static guard band that is added to the supply voltage in order to protect against worst-case voltage droops. The z15 processor relies on selected events from the earlier stages of a deep pipeline processor as indicators to predict sharp changes in the power consumption over a short period of time. The early information of the selected events allows to throttle the execution flow through the processor pipeline and prevents the sharp power change before it takes place and thus reduces the voltage droop. In z15, as one of the proactive schemes, we combine both the digital power-proxies, which are direct indicators of the processor activity and the Critical Path Monitors (CPMs) to give an earlier and proactive indication of voltage droop events. This proactive indication provides enough time for the throttle actuation circuits to prevent the voltage droop. CPMs act as real-time timing margin indicators, and power-proxies act to serve as the activity monitors.
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来源期刊
IBM Journal of Research and Development
IBM Journal of Research and Development 工程技术-计算机:硬件
自引率
0.00%
发文量
0
审稿时长
6-12 weeks
期刊介绍: The IBM Journal of Research and Development is a peer-reviewed technical journal, published bimonthly, which features the work of authors in the science, technology and engineering of information systems. Papers are written for the worldwide scientific research and development community and knowledgeable professionals. Submitted papers are welcome from the IBM technical community and from non-IBM authors on topics relevant to the scientific and technical content of the Journal.
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