XPS: EXPL: FP: Architecture and Software for Scalable Persistent Memory

XPS：EXPL：FP：可扩展持久内存的架构和软件

• 批准号: 1439075
• 负责人: Peter Varman
• 金额: $ 26.97万
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-08-01 至 2018-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1439075&HistoricalAwards=false
• 关键词: XPS; EXPL; FP; Architecture; Software; XPS; EXPL; FP; Architecture; Software

Emerging Storage Class Memory (SCM) technologies combine the non-volatility of storage devices like hard disks and solid state drives (SSDs) with the ability to access data at byte granularity rather than at a block level. Application developers can focus on a single fine-grained storage abstraction, rather than deal with word-granularity access for DRAM memory and a block interface for file-based disk storage. Accessing data directly from SCM instead of software-arbitrated block access has significant performance advantages, especially for modern data intensive applications based on graph and relation processing. However the use of direct SCM access places a significant burden on the application to achieve transactional and robust execution in the presence of unexpected machines failures and software aborts. The research will identify lightweight, scalable architectural and software techniques for developing robust SCM-based software. The goal is to make the development of software for persistent memory comparable to programming conventional DRAM main-memory by relieving the programmer from the complexities of managing transactional atomicity and persistence. Both hardware solutions based on enhancements to the processor and memory-controller architecture, and software approaches in the form of a lightweight persistence library will be developed. The techniques will be scaled up to handle multiple threads and cores, and scale out to multiple CPU sockets and to distributed clustered architectures.

新兴的存储类内存（SCM）技术结合了硬盘和固态驱动器（SSD）等存储设备的非挥发性，并能够在字节粒度而不是在块级上访问数据。应用程序开发人员可以专注于单个细粒的存储抽象，而不是处理DRAM内存的单词粒度访问，以及用于基于文件的磁盘存储的块接口。直接从SCM访问数据而不是软件均值块访问具有显着的性能优势，尤其是对于基于图形和关系处理的现代数据密集型应用程序。但是，直接SCM访问的使用给应用程序带来了重大负担，以在存在意外的机器故障和软件中止的情况下实现交易和强大的执行。该研究将确定用于开发可靠基于SCM的软件的轻巧，可扩展的体系结构和软件技术。 目的是通过使程序员摆脱管理交易原子和持久性的复杂性，使其与编程常规DRAM主机相媲美的持续记忆的软件开发。基于对处理器和内存控制器体系结构的增强功能的两种硬件解决方案，以及以轻质持久库的形式的软件方法。这些技术将进行扩展以处理多个线程和内核，并扩展到多个CPU插座并分布式群集体系结构。