EHCS(EHS), TM: Real-Time Synchronization on Multicore Platforms

EHCS(EHS)，TM：多核平台上的实时同步

• 批准号: 0834132
• 负责人: James Anderson
• 金额: --
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-15 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0834132&HistoricalAwards=false
• 关键词: EHCS; EHS; TM; Real; Time

The advent of multicore platforms has led to renewed interest in multiprocessor real-time systems, with considerable recent work directed at scheduling issues. Unfortunately, the equally-important topic of synchronization, in comparison, has been somewhat neglected. Indeed, the most influential work on this topic was done decades ago, at a time when multiprocessor real-time applications were deemed to be mostly of "academic" interest only. The objective of this project is to re-visit the issue of real-time synchronization in light of the ongoing multicore revolution, with the goal of devising mechanisms that can be practically applied. The fundamental thesis of this project is "simplicity wins." Specifically, real-time synchronization mechanisms, though generally applicable, should be designed with common-case scenarios in mind, using simple techniques that can be reasonably analyzed. This begs the question: What is the common case? To determine this, trace data is collected in this project concerning the synchronization behavior of a wide range of real-time applications. This data is then being used to produce real-time synchronization benchmarks, which will guide development efforts. These efforts consider: real-time multiprocessor locking protocols; techniques for supporting read-mostly synchronization; the use of transactional memory and non-blocking synchronization in real-time applications; and synchronization techniques that can be applied in settings where both real-time and non-real-time components co-exist. Broader impacts include joint research with industry colleagues at AT&T, Honeywell, IBM, Intel, and Sun, and the development of publicly-available open-source software that can be used by other institutions for research and teaching purposes.

多核平台的出现，导致了新的兴趣，多处理器实时系统，有相当多的最近的工作针对调度问题。 不幸的是，相比之下，同样重要的同步主题在某种程度上被忽视了。 事实上，关于这个主题最有影响力的工作是在几十年前完成的，当时多处理器实时应用程序被认为主要是“学术”兴趣。 该项目的目标是根据正在进行的多核革命重新审视实时同步问题，目的是设计可以实际应用的机制。 这个项目的基本论点是“简单取胜。具体来说，实时同步机制虽然普遍适用，但在设计时应考虑到常见情况，使用可以合理分析的简单技术。 这就引出了一个问题：什么是常见情况？为了确定这一点，本项目收集了有关各种实时应用程序同步行为的跟踪数据。 这些数据随后被用于生成实时同步基准，这将指导开发工作。 这些努力考虑到：实时多处理器锁定协议;支持多读同步的技术;实时应用程序中事务内存和非阻塞同步的使用;以及可应用于实时和非实时组件共存的设置中的同步技术。 更广泛的影响包括与AT T、Honeywell、IBM、Intel和Sun的行业同事进行联合研究，以及开发可供其他机构用于研究和教学目的的公开开源软件。