CSR: Medium: Collaborative Research: Portable Performance for Parallel Managed Languages Across the Many-Core Spectrum

CSR：媒介：协作研究：跨多核频谱的并行托管语言的可移植性能

• 批准号: 1833291
• 负责人: J. Eliot Moss
• 金额: $ 0.91万
• 依托单位: University of Massachusetts Amherst
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-08-13 至 2019-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1833291&HistoricalAwards=false
• 关键词: CSR; Medium; Collaborative; Research; Portable

Computers with many tens to hundreds of ?cores? are on their way, but programming languages and toolsthat exploit them well have lagged. At the same time, there are emerging programming languages intendedfor writing programs to run on these computers. These languages, such as X10 and Fortress, add support fornew concepts that make it easier to write many-core programs, but there does not yet exist good compiler andrun-time support for these languages. Systems that run Java, namely Java virtual machines such as those thatrun on virtually every laptop, desktop, and server today, supply much of what the new languages need, butfall short in some important ways. In particular they do not provide for saying in which part of memory toplace particular objects, on which core to run which computations, easy ways to get all cores busy workingon different parts of a big piece of data, or for synchronizing and getting right all the data manipulationshappening at the same time. This project is extending an existing research Java virtual machine (JikesRVM) with support for many ways of doing the things that the new languages need in order to run wellon many-core computers. The primary goal is to devise extensions to standard Java virtual machines forthis new world, and to make it possible for many others to experiment with different ways of implementingthese extensions, thus leveraging the creativity of the whole community of language and virtual machineresearchers. Secondary goals include offering reasonably good initial implementations of virtual machineextensions as a starting point for future research and development, and proposing specific extensions to theJava virtual machine specification standard.

具有数十到数百个“核心”的计算机？正在路上，但很好地利用它们的编程语言和工具却滞后了。与此同时，出现了一些新兴的编程语言，旨在编写在这些计算机上运行的程序。这些语言（例如 X10 和 Fortress）增加了对新概念的支持，使编写多核程序变得更加容易，但这些语言尚不存在良好的编译器和运行时支持。运行 Java 的系统，即 Java 虚拟机，例如当今几乎每台笔记本电脑、台式机和服务器上运行的虚拟机，提供了新语言所需的大部分功能，但在某些重要方面存在缺陷。特别是，它们没有提供说明在内存的哪个部分放置特定对象、在哪个核心上运行哪些计算、让所有核心忙于处理大数据的不同部分的简单方法，或者同步和正确处理所有数据的方法。数据操作同时发生。该项目正在扩展现有的研究 Java 虚拟机 (JikesRVM)，支持新语言在多核计算机上良好运行所需的多种方法。主要目标是为这个新世界设计标准 Java 虚拟机的扩展，并使许多其他人能够尝试实现这些扩展的不同方法，从而充分利用整个语言和虚拟机研究人员社区的创造力。次要目标包括提供相当好的虚拟机扩展的初始实现作为未来研究和开发的起点，并提出 Java 虚拟机规范标准的特定扩展。