CAREER: Compiler-Inserted Runtime Adaptation for Multicore Processors

职业：针对多核处理器的编译器插入运行时适配

基本信息

批准号：
1054075
负责人：
David Penry
金额：
$ 45万
依托单位：
Brigham Young University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2011
资助国家：
美国
起止时间：
2011-07-15 至 2017-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1054075&HistoricalAwards=false
关键词：
CAREER Compiler Inserted Runtime Adaptation

项目摘要

Increases in the number of cores in multicore processors have lead toincreases in the architectural and environmental diversity present incomputer systems: the number, complexity, and mix of available coresvary greatly and the resources allocated to an application differ fromrun-to-run and within runs.Diversity has a significant impact on application performance;applications must adapt to differences in their architecture andenvironment to achieve good performance. However, developing adaptiveapplications greatly increases the difficulty of writing efficientparallel programs while increasing the level of skill required towrite a parallel application, and may therefore limit programmers'ability to write parallel applications and take full advantage ofmulticore processors.This project develops and disseminates new compilation techniques andruntime adaptation strategies in which a compiler analyzes theconcurrency and locality features of an application, selects a runtimeadaptation strategy based on these features, and adds adaptation tothe application. Key contributions address the challenges ofdiscovering and representing concurrency and locality and selectingadaptation strategies based upon application characteristics.These new compilation techniques and adaptation strategies will freeprogrammers from the need to concern themselves with architectural andenvironmental diversity when writing parallel applications. Thisfreedom will then enable a wide variety of applications to benefitfrom multicore processors, thus ensuring that multicore processorsystems will be able to live up to users' increased performanceexpectations.

多核处理器中核心数量的增加导致计算机系统中架构和环境多样性的增加：可用核心的数量、复杂性和混合差异很大，并且分配给应用程序的资源在运行之间和运行内不同。多样性对应用程序性能有重大影响；应用程序必须适应其架构和环境的差异才能获得良好的性能。然而，开发自适应应用程序大大增加了编写高效并行程序的难度，同时提高了编写并行应用程序所需的技能水平，因此可能限制程序员编写并行应用程序和充分利用多核处理器的能力。该项目开发和传播新的编译技术运行时适配策略，编译器分析应用程序的并发性和局部性特征，根据这些特征选择运行时适配策略，并为应用程序添加适配。主要贡献解决了发现和表示并发性和局部性以及根据应用程序特性选择适应策略的挑战。这些新的编译技术和适应策略将使程序员在编写并行应用程序时无需担心体系结构和环境的多样性。这种自由将使各种应用程序能够从多核处理器中受益，从而确保多核处理器系统能够满足用户不断提高的性能期望。