Main Memory Power Management

随着处理器性能和网络带宽的不断提高，能源正在成为许多应用的限制性资源。诸如无线传感器网络、集成了个人管理器（pda）的移动电话、笔记本电脑、甚至Internet托管中心等设备都担心由于电池容量有限或操作和冷却大型服务器群的高成本而导致的功耗问题。在许多这样的系统中，主存可以成为总体功率预算的重要部分，特别是随着低功耗、高性能处理器的出现。本项目研究了跨越计算机系统设计几个层次的主要内存电源管理研究问题：从管理内存电源状态的操作系统，到平台架构的设计特征，最后到内部DRAM组织的细节。该项目将研究每个系统级别内的电源管理设计决策，并探索各个级别之间的交互。

Energy is becoming the limiting resource for many applications, as processor performance and network bandwidth continue to rapidly advance. Devices such as wireless sensor networks, cell phones with integrated personal organizers (PDAs), laptops, and even Internet hosting centers are all concerned about power consumption either due to limited battery capacity or the high cost of operating and cooling large server farms. In many of these systems main memory can become a significant portion of the overall power budget, particularly with the advent of low-power, high-performance processors.This project investigates main memory power management research issues that span several levels of computer system design: from the operating system managing memory power states, to the design characteristics of platform architectures, and finally down to the details of internal DRAM organization.This project will investigate power management design decisions within each system level and explore interactions across levels.