CPA-CSA: Tera-PCM: A Low Power Terabyte Main Memory using Phase Change Memory

CPA-CSA：Tera-PCM：使用相变存储器的低功耗太字节主存储器

• 批准号: 0811295
• 负责人: Bruce Childers
• 金额: $ 30万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-07-15 至 2012-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0811295&HistoricalAwards=false
• 关键词: CPA; CSA; Tera; PCM; Low

The emergence of chip multiprocessors (CMPs) is ushering in a new era of high-performance on the desktop. Within several years, desktop computers could have tens to even hundreds of CPUs, leading to petascale performance. However, a problem looms on the horizon: current memory technology will not keep pace with the terabyte size and scales of future application data sets.This project aims to overcome the obstacles of building a terabyte and beyond main memory. Our approach replaces a large main memory constructed with conventional DRAM with an even larger main memory constructed with phase-change memory (PCM). PCM has good scalability, exceptionally low power consumption, and no susceptibility to errors. To use PCM, there are several challenges, including relatively slow performance and poor write endurance. We will develop a new memory architecture, called Tera-PCM, to manage PCM acceess latency and to increase PCM longevity. Our hypothesis is that Tera-PCM can be used to construct a terabyte memory for desktop CMPs that is performance and endurance competitive with DRAM at a lower power cost. The project will impact both undergraduate and graduate students, through research opportunities and industry internships. Students from under-represented groups in computer science and computer engineering will be recruited to participate, furthering diversity.

芯片多处理器 (CMP) 的出现正在开创桌面高性能的新时代。几年之内，台式计算机可能拥有数十个甚至数百个 CPU，从而实现千万亿级性能。然而，一个问题迫在眉睫：当前的内存技术将无法跟上未来应用数据集的 TB 大小和规模。该项目旨在克服构建 TB 级及超越主内存的障碍。我们的方法用相变存储器 (PCM) 构建的更大主存储器取代了传统 DRAM 构建的大型主存储器。 PCM 具有良好的可扩展性、极低的功耗且不易出错。使用PCM存在一些挑战，包括性能相对较慢和写入耐久性较差。我们将开发一种名为 Tera-PCM 的新内存架构，以管理 PCM 访问延迟并延长 PCM 寿命。我们的假设是，Tera-PCM 可用于构建用于桌面 CMP 的 TB 内存，其性能和耐用性可以以较低的功耗成本与 DRAM 相媲美。 该项目将通过研究机会和行业实习影响本科生和研究生。 来自计算机科学和计算机工程领域代表性不足群体的学生将被招募参与，进一步促进多样性。