CSR: Small: Towards Solutions of Maximizing Performance and Lifetime for Non-Volatile Main Memory Systems

CSR：小：实现非易失性主内存系统性能和寿命最大化的解决方案

• 批准号: 1015802
• 负责人: Edwin Sha
• 金额: $ 30.2万
• 依托单位: University of Texas at Dallas
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1015802&HistoricalAwards=false
• 关键词: CSR; Small; Towards; Solutions; Maximizing

Non-volatile memories such as flash memory, Phase Change Memory and Magnetic Memory have the characteristics of low-cost, non-volatility, shock-resistivity and power-economy. Because non-volatile memory consumes less idle power than DRAM by orders of magnitude, achieves fast start-up time and can be twice as dense as DRAM, it is desirable for the computing system industry to use these memories not only as non-volatile storage, but also as main memory. In order to make it possible, however, we need answers to two challenges: The first one is the issue of lifetime and the second is the slowness of write activities.The objective of this project is to develop solutions to these problems by reducing write activities on non-volatile memory through software optimization and hardware support, which lead to the practical adoption of non-volatile main memory in mobile and embedded systems.This project, consisting of 3 groups of tasks, considers various types of platforms with single core or multiple cores. The type of cache on each platform can be either a hardware controlled cache or a software controlled one. Best cache consistency protocol is studied so that the required write activities to main memory are minimized. This project develops techniques including Write-Aware Scheduling, Recomputation, and Data Migration. These techniques will be combined to yield the best results on various platforms. Broader impact: The engineers need to learn how to design the new-generation of embedded systems with non-volatile memory. This project will provide effective tools and solutions to the general engineers.

非易失性存储器如闪存、相变存储器、磁存储器等具有低成本、非易失性、抗冲击和节能等特点。由于非易失性存储器消耗的空闲功率比DRAM少几个数量级，实现了快速启动时间，并且密度可以是DRAM的两倍，因此计算系统行业不仅希望将这些存储器用作非易失性存储器，而且还将其用作主存储器。然而，为了使之成为可能，我们需要解决两个挑战：第一个是寿命问题，第二个是写活动缓慢的问题。本项目的目标是通过软件优化和硬件支持减少对非易失性存储器的写操作，从而使非易失性主存储器在移动和嵌入式系统中得到实际采用，从而解决这些问题。该项目由3组任务组成，考虑了各种类型的单核或多核平台。每个平台上的缓存类型可以是硬件控制的缓存，也可以是软件控制的缓存。研究了最优缓存一致性协议，使对主存的写操作最小化。该项目开发了包括写感知调度、重新计算和数据迁移在内的技术。这些技术将结合在一起，在各种平台上产生最佳结果。更广泛的影响：工程师需要学习如何设计具有非易失性存储器的新一代嵌入式系统。该项目将为广大工程技术人员提供有效的工具和解决方案。