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

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.

新兴存储类内存（SCM）技术将硬盘和固态硬盘（ssd）等存储设备的非易失性与以字节粒度而不是以块级别访问数据的能力相结合。应用程序开发人员可以专注于单个细粒度的存储抽象，而不是处理DRAM内存的字粒度访问和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仲裁块访问具有显著的性能优势，特别是对于基于图和关系处理的现代数据密集型应用。然而，直接SCM访问的使用给应用程序带来了很大的负担，在出现意外的机器故障和软件中断时，要实现事务性和健壮的执行。该研究将确定轻量级、可扩展的架构和软件技术，用于开发健壮的基于scm的软件。目标是通过将程序员从管理事务原子性和持久性的复杂性中解脱出来，使持久内存的软件开发与传统DRAM主内存的编程相媲美。将开发基于增强处理器和内存控制器体系结构的硬件解决方案，以及以轻量级持久性库形式出现的软件解决方案。这些技术将扩展到处理多个线程和内核，并扩展到多个CPU插槽和分布式集群架构。