Main Memory Power Management

随着处理器性能和网络带宽的持续快速发展，能源正成为许多应用程序的限制性资源。 无线传感器网络、集成个人管理器（PDA）的手机、笔记本电脑甚至互联网托管中心等设备都非常关注功耗，因为它们的电池容量有限，或者运行和冷却大型服务器群的成本很高。 在许多这样的系统中，主存储器可以成为总功率预算的重要部分，特别是随着低功率、高性能处理器的出现。本项目研究跨越计算机系统设计的几个层次的主存储器功率管理研究问题：从管理存储器功率状态的操作系统，到平台架构的设计特性，最后是DRAM内部组织的细节。2这个项目将研究每个系统级别内的电源管理设计决策，并探索跨级别的交互作用。

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.