Combining Hardware and Software Monitoring for Improved Power and Performance Tuning

结合硬件和软件监控以改进功耗和性能调整

• 批准号: 0311180
• 负责人: Ruth Bahar
• 金额: $ 16万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-15 至 2007-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0311180&HistoricalAwards=false
• 关键词: Combining; Hardware; Software; Monitoring; Improved

BaharCombining Hardware and Software Monitoring for Improved Power and Performance TuningAbstractDynamically configuring processor resources to match a program's needs has been shown to be an effective means of reducing CPU power dissipation without sacrificing performance. This research focuses on combining software profiling and hardware monitoring techniques to drive the reconfiguration process. The proposed approach is based on the premise that each has different strengths and weaknesses and their combination will give a better prediction of the dynamic behavior of an application. Using this information, parts of the processor can be run at reduced power or shut down completely when they are not needed and powered up just before they are.Three methods that will be explored for reducing power are: (1) fetch halting, (2) deactivating parts of the logic that select instructions for execution and parts of the issue queue, and (3) deactivating some of the ALU's. The three components are interrelated because fetch halting can decrease the number of instructions that become ready to issue, which can cause some of the functional units to become idle. In addition, not halting the fetch unit can cause the issue queue to fill up and delay turning off queue entries. The goal of this research is to find effective ways of combining software and hardware techniques to significantly lower energy consumption over a range of architectures that may include features such as multithreading and multiple processors on a chip.

Bahar结合硬件和软件监控以提高功耗和性能调优摘要动态配置处理器资源以满足程序的需求已被证明是在不牺牲性能的情况下降低CPU功耗的有效方法。 这项研究的重点是结合软件分析和硬件监控技术来驱动重新配置过程。 所提出的方法基于这样的前提：每种方法都有不同的优点和缺点，它们的组合将更好地预测应用程序的动态行为。 利用此信息，处理器的某些部分可以以降低的功耗运行，或者在不需要时完全关闭，并在需要之前加电。将探索用于降低功耗的三种方法是：（1）读取停止，（2） ) 停用选择执行指令的逻辑部分和发出队列的部分，以及 (3) 停用一些 ALU。 这三个组件是相互关联的，因为读取停止可以减少准备发出的指令数量，这可能导致某些功能单元变得空闲。 此外，不停止获取单元可能会导致发出队列填满并延迟关闭队列条目。 这项研究的目标是找到结合软件和硬件技术的有效方法，以显着降低一系列架构的能耗，这些架构可能包括多线程和芯片上的多个处理器等功能。