Collaborative Research: AF: Medium: Adventures in Flatland: Algorithms for Modern Memories

合作研究：AF：媒介：平地历险记：现代记忆算法

• 批准号: 2106999
• 负责人: Martin Farach-Colton
• 金额: $ 29.98万
• 依托单位: Rutgers University New Brunswick
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-06-01 至 2024-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2106999&HistoricalAwards=false
• 关键词: Collaborative; Research; AF; Medium; Adventures

The computer industry is in the midst of a revolution in data-storage technology that is forcing a major reevaluation of the algorithms used for moving data through the computer. Every new generation of storage hardware has required a new theoretical understanding of these algorithmic building blocks. Such theoretical improvements have had a profound impact on other fields of computer science, including databases and file systems, and even networks, operating systems, and machine learning. This project aims to develop the algorithmic solutions needed to exploit this seismic shift in storage technology.The team considers three impacts on algorithm performance that arise from new hardware technology such as nonvolatile memories and increased parallelism: (1) there are smaller gaps between levels in latency and in bandwidth, (2) many-core technologies introduce sharing effects on caches, and (3) memory hierarchies do not adhere to a standard strictly nested model. The team is investigating: (a) algorithmic problems in parallel-cache allocation and high-bandwidth-memory scheduling and allocation; (b) data structural problems that arise from different I/O cost models, including those that factor in the computational cost and/or the cost of durability; (c) extensions to the streaming and semi-streaming models, where algorithms have some amount of sequentially accessible working memory in addition to the traditional small pool of randomly accessible memory; (d) new I/O-efficient algorithms for directed graphs. The team is continuing community-building efforts to span systems and algorithms, including founding, steering, and/or running two new conferences and organizing workshops on the theory of non-volatile memory and storage.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

计算机行业正处于数据存储技术的革命之中，这迫使人们对用于通过计算机移动数据的算法进行重大重新评估。每一代新一代的存储硬件都需要对这些算法构建块有新的理论理解。这样的理论改进对计算机科学的其他领域产生了深远的影响，包括数据库和文件系统，甚至网络、操作系统和机器学习。该项目旨在开发利用存储技术中这一巨大转变所需的算法解决方案。该团队考虑了新硬件技术（例如非易失性存储器和增强的并行性）对算法性能的三个影响：（1）延迟和带宽，(2) 多核技术引入了缓存共享效应，(3) 内存层次结构不遵守标准的严格嵌套模型。 该团队正在研究：(a) 并行缓存分配和高带宽内存调度和分配中的算法问题； (b) 不同 I/O 成本模型产生的数据结构问题，包括那些考虑计算成本和/或持久性成本的问题； (c) 流式和半流式模型的扩展，其中算法除了传统的小型随机访问内存池之外，还具有一定量的可顺序访问的工作内存； (d) 有向图的新 I/O 高效算法。 该团队正在继续开展跨系统和算法的社区建设工作，包括创立、指导和/或举办两个新会议以及组织有关非易失性内存和存储理论的研讨会。该奖项反映了 NSF 的法定使命，并被视为值得通过使用基金会的智力优点和更广泛的影响审查标准进行评估来支持。

项目成果

On the Optimal Time/Space Tradeoff for Hash Tables

关于哈希表的最佳时间/空间权衡

• 发表时间: 2022-01
• 期刊: STOC
• 作者: Bender, Michael;Farach;Kuszmaul, John;Kuszmaul, William;Liu, Mingmou
• 通讯作者: Liu, Mingmou

Fast Stencil Computations using Fast Fourier Transforms

使用快速傅里叶变换进行快速模板计算

• 发表时间: 2021-01
• 期刊: Annual ACM Symposium on Parallelism in Algorithms and Architectures
• 作者: Ahmad, Zafar;Chowdhury, Rezaul;Das, Rathish;Ganapathi, Pramod;Gregory, Aaron;Zhu, Yimin
• 通讯作者: Zhu, Yimin

Mitigating False Positives in Filters: to Adapt or to Cache?

减少过滤器中的误报：适应还是缓存？

• 发表时间: 2021-01
• 期刊: SIAM Symposium on Algorithmic Principles of Computer System
• 作者: Bender, Michael;Das, Ratish;Farach;Mo, Tianchi;Tench, David;Wang, Yung Ping
• 通讯作者: Wang, Yung Ping

Low-Depth Parallel Algorithms for the Binary-Forking Model without Atomics

无原子二元分叉模型的低深度并行算法

• 发表时间: 2021-01
• 期刊: Annual ACM Symposium on Parallelism in Algorithms and Architectures
• 作者: Ahmad, Zafar;Chowdhury, Rezaul;Das, Rathish;Ganapathi, Pramod;Gregory, Aaron;Javanmard, Mohammad Mahdi
• 通讯作者: Javanmard, Mohammad Mahdi

Vector Quotient Filters: Overcoming the Time/Space Trade-Off in Filter Design

矢量商滤波器：克服滤波器设计中的时间/空间权衡

• 发表时间: 2021-01
• 期刊: SIGMOD record
• 影响因子: 1.1
• 作者: Pandey, Prashant;Conway, Ale;Durie, Joe;Bender, Michael;Farach;Johnson, Rob
• 通讯作者: Johnson, Rob