SHF: Small: Characterizing and Optimizing 3D NAND Flash

SHF：小型：表征和优化 3D NAND 闪存

• 批准号: 1908793
• 负责人: Mahmut Kandemir
• 金额: $ 50万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-10-01 至 2024-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1908793&HistoricalAwards=false
• 关键词: SHF; Small; Characterizing; Optimizing; 3D

Inexpensive, reliable and large storage capacities are desirable in almost all application domains of national importance. For example, applications such as climate prediction, nuclear simulation and computational chemistry manipulate enormous datasets. A specific type of storage products, called NAND Flash, are suitable candidates for storing such large datasets given their performance, reliability and power efficiency advantages over traditional disk drives, and thus have seen widespread adoption recently. However, with continuous increase in dataset sizes, conventional NAND products available in the market are experiencing difficulty in coping with high performance and high reliability demands. 3D NAND flash is the newest architectural enhancement in the flash world to address this scalability problem, by enabling flash-memory cells to be stacked vertically in multiple layers. Despite the promise of 3D NAND flash, its fundamental characteristics and internal structures are not well understood as of today, from both the workload behavior and resource utilization perspectives. Yet architectural, firmware and system software level problems and potential opportunities have largely been ignored, which this project seeks to address. The outcome of this project is expected to enhance the design and utilization of 3D NAND storage in many big data application domains. The educational and outreach components of this project includes (1) a new graduate level course on advanced storage system concepts; (2) engaging undergraduates from Penn State's Schreyer Honors College in the research activities; (3) involving students from the Integrated Undergraduate/Graduate (IUG) program at Penn State to interest them in this topic, for possible graduate study in this project; and (4) organizing summer camps for high school girls and high school teachers.Specifically, this project conducts an in-depth study of 3D NAND flash memory (in particular solid state devices built using them), with the intent of identifying the workload and resource utilization characteristics of 3D NAND flash, implementing and evaluating a set of architectural, firmware and system software level optimizations targeting 3D NAND flash architectures as well as 2D/3D NAND flash hybrids. The project consists of four tasks: (1) performing a thorough exploration of various architectural optimizations specific to 3D NAND flash; (2) investigating firmware-level optimizations such as long read latency mitigation, as well as various reliability and lifetime enhancement techniques; (3) conducting an in-depth study of system software level issues such as file system-level request scheduling; and (4) performing a detailed experimental evaluation of the optimizations using different types of application workloads and an in-house 3D NAND simulation infrastructure.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.

在几乎所有国家重要性的应用领域中，都需要廉价，可靠和较大的存储能力。例如，诸如气候预测，核模拟和计算化学之类的应用程序操纵了巨大的数据集。鉴于其性能，可靠性和功率效率优势比传统的磁盘驱动器具有，因此一种称为NAND FLASH的特定类型的存储产品是存储如此大数据集的合适候选者，因此最近已广泛采用。但是，随着数据集大小的不断增加，市场上可用的常规NAND产品在应对高性能和高可靠性需求方面遇到困难。 3D NAND Flash是Flash世界中最新的体系结构增强功能，可以通过使Flash-Memory单元格在多层中垂直堆叠来解决此可扩展性问题。尽管有3D NAND FLASH的承诺，但从工作负载行为和资源利用的角度来看，它的基本特征和内部结构尚未得到充分理解。然而，该项目试图解决的建筑，固件和系统软件级别的问题和潜在机会已被忽略。该项目的结果有望增强许多大数据应用程序域中3D NAND存储的设计和利用。该项目的教育和外展成分包括（1）有关高级存储系统概念的新研究生级课程； （2）从宾夕法尼亚州立大学的Schreyer Honors学院参与研究活动的本科生； （3）参与宾夕法尼亚州立大学综合本科/研究生（IUG）课程的学生对他们感兴趣，以便在该项目中进行研究生学习； （4）组织高中女生和高中老师的夏令营。特别是，该项目对3D NAND（特别是使用它们构建的固态设备）进行了深入研究，目的是确定3D NAND闪光灯的工作量和资源利用特征，实施3D NAND闪光灯，并评估3D型号的架构架构及2架架构级别的架构量3D型号及其目标。 Flash杂种。该项目由四个任务组成：（1）对3D NAND FLASH特定的各种建筑优化进行彻底探索； （2）调查固件级别的优化，例如长期阅读延迟减轻，以及各种可靠性和寿命增强技术； （3）对系统软件级别问题进行深入研究，例如文件系统级请求计划； （4）使用不同类型的应用程序工作负载和内部3D NAND模拟基础架构对优化进行详细的实验评估。该奖项反映了NSF的法定任务，并被认为是通过基金会的知识分子优点和更广泛影响的审查标准来通过评估来获得支持的。

项目成果

Fair Resource Allocation in Consolidated Flash Systems

• 发表时间: 2019-07
• 期刊: Proceedings of the 23rd ACM/IFIP International Middleware Conference
• 作者: Wonil Choi;B. Urgaonkar;M. Kandemir;Myoungsoo Jung

GSSA: A Resource Allocation Scheme Customized for 3D NAND SSDs

• DOI: 10.1109/hpca51647.2021.00043
• 发表时间: 2021-02
• 期刊: 2021 IEEE International Symposium on High-Performance Computer Architecture (HPCA)
• 作者: Chun-Yi Liu;Yunju Lee;Wonil Choi;Myoungsoo Jung;M. Kandemir;C. Das

Fair Write Attribution and Allocation for Consolidated Flash Cache

• DOI: 10.1145/3373376.3378502
• 发表时间: 2020-03
• 期刊: Proceedings of the Twenty-Fifth International Conference on Architectural Support for Programming Languages and Operating Systems
• 作者: Wonil Choi;B. Urgaonkar;M. Kandemir;Myoungsoo Jung;D. Evans

Prolonging 3D NAND SSD lifetime via read latency relaxation

• DOI: 10.1145/3445814.3446733
• 发表时间: 2021-04
• 期刊: Proceedings of the 26th ACM International Conference on Architectural Support for Programming Languages and Operating Systems
• 作者: Chun-Yi Liu;Yunju Lee;Myoungsoo Jung;M. Kandemir;Wonil Choi

Revamping Storage Class Memory With Hardware Automated Memory-Over-Storage Solution

• DOI: 10.1109/isca52012.2021.00065
• 发表时间: 2021-06
• 期刊: 2021 ACM/IEEE 48th Annual International Symposium on Computer Architecture (ISCA)
• 作者: Jie Zhang;Miryeong Kwon;Donghyun Gouk;Sungjoon Koh;N. Kim;M. Kandemir;Myoungsoo Jung