SHF: Small: Energy-Efficient Memory Subsystems for the Many-Core Era

SHF：小型：多核时代的节能内存子系统

• 批准号: 0916539
• 负责人: Ricardo Bianchini
• 金额: $ 38.69万
• 依托单位: Rutgers University New Brunswick
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0916539&HistoricalAwards=false
• 关键词: SHF; Small; Energy; Efficient; Memory

The energy consumed by the memory subsystem is increasing as a fraction of the overall server energy consumption. It is anticipated that upcoming low-power, byte-addressable, persistent-memory technologies, namely Phase-Change RAM (PC-RAM) and Spin-Transfer Torque RAM (STT-RAM), are likely to play a major role in conserving server energy. These technologies are far superior to Flash and, most interestingly, may actually replace DRAM as well.The research will study hybrid memory subsystems by combining these technologies and DRAM, as well as DRAM-free memory subsystems. The outcomes of this investigation will be: (1) a body of knowledge about PC-RAM and STT-RAM and their potential benefits and limitations; (2) a collection of memory controller and operating system techniques for using these technologies to conserve energy, while bounding performance degradation to user-defined limits; and (3) a simulation and operating system infrastructure that can be used by others in their investigations of memory and energy issues. This work can promote a new direction in memory subsystem design and energ conservation, one that can have a profound impact on the design of future servers.

内存子系统消耗的能源占服务器总能源消耗的比例正在不断增加。 预计即将推出的低功耗、字节可寻址、持久内存技术，即相变 RAM (PC-RAM) 和自旋转移扭矩 RAM (STT-RAM)，可能会在节省服务器能源方面发挥重要作用。 这些技术远远优于闪存，最有趣的是，实际上也可能取代 DRAM。该研究将通过将这些技术与 DRAM 相结合来研究混合内存子系统，以及无 DRAM 的内存子系统。 这项调查的结果将是：(1) 有关 PC-RAM 和 STT-RAM 及其潜在优点和局限性的知识体系； (2) 内存控制器和操作系统技术的集合，用于使用这些技术来节省能源，同时将性能下降限制在用户定义的限制内； (3) 模拟和操作系统基础设施，可供其他人在研究内存和能源问题时使用。这项工作可以推动内存子系统设计和节能的新方向，对未来服务器的设计产生深远的影响。