AF: SMALL: Collaborative Research: Data Structures for Parallel Algorithms

AF：小：协作研究：并行算法的数据结构

• 批准号: 1218017
• 负责人: Kunal Agrawal
• 金额: $ 17.19万
• 依托单位: Washington University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-08-01 至 2016-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1218017&HistoricalAwards=false
• 关键词: AF; SMALL; Collaborative; Research; Data

This project develops a theory for characterizing the performance of parallel data structures and parallel algorithms that use parallel structures. Standard metrics for parallel algorithms, such as "work" (total amount of computation) and "span" (critical-path length), do not naturally generalize in the presence of contention on shared data. Moreover, standard approaches for analyzing sequential data structures, such as amortization, do not seem to generalize when data structures are parallel, in part because the performance depends on the properties of the underlying parallel task schedulers.The specific research goals are as follows: (1) Investigate a methodology for designing and analyzing parallel algorithms that use data structures, especially amortized ones. (2) Design parallel schedulers that ameliorate the contention on parallel data structures. (3) Design parallel data structures that perform provably well with these schedulers.Today parallel computing is ubiquitous. Modern computation platforms---smartphones to network routers, personal computers to large clusters and clouds---each contain multiple processors. Writing parallel code that provably scales well is challenging and techniques for analyzing sequential algorithms and data structures generally do not apply to parallel code. This project will develop a theoretical foundation for characterizing the scalability of parallel programs that contend for access to shared data.

该项目开发了一种表征并行数据结构和使用并行结构的并行算法性能的理论。 并行算法的标准度量，例如“工作”（计算总量）和“跨度”（关键路径长度），在存在共享数据争用的情况下不能自然地概括。 此外，分析顺序数据结构的标准方法（例如摊销）在数据结构并行时似乎无法推广，部分原因是性能取决于底层并行任务调度程序的属性。具体研究目标如下：（ 1）研究设计和分析使用数据结构（尤其是摊销数据结构）的并行算法的方法。 (2) 设计并行调度器来改善并行数据结构的争用。 (3) 设计并行数据结构，通过这些调度程序可以证明性能良好。如今，并行计算无处不在。 现代计算平台——智能手机到网络路由器、个人电脑到大型集群和云——每个平台都包含多个处理器。 编写可证明可良好扩展的并行代码具有挑战性，并且分析顺序算法和数据结构的技术通常不适用于并行代码。 该项目将为表征竞争访问共享数据的并行程序的可扩展性奠定理论基础。