权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

CNS Core: Small: Gmem: Unified Address Space Management for Heterogeneous Systems

CNS 核心：小型：Gmem：异构系统的统一地址空间管理

基本信息

批准号：
2008857
负责人：
Alan Cox
金额：
$ 50万
依托单位：
William Marsh Rice University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-07-15 至 2023-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2008857&HistoricalAwards=false
关键词：
CNS Core Small Gmem Unified

项目摘要

With the decline in year-over-year performance increases achieved by new general-purpose processors, a growing variety of devices, e.g., field-programmable gate arrays, are being added to computers to accelerate applications. Consequently, the operating system (OS) must not only manage access to the computer's memory by applications running on general-purpose processors but also on a diverse array of accelerators. Currently, memory access by these accelerators is managed by different, disconnected parts of the OS, leading to a proliferation of independent, redundant, and often inefficient implementations. This project aims to replace the current fragmented architecture by a unified framework for all devices.Specifically, this project's principal objective is to create a generalized mapping and protection system, called Gmem, that will provide a single, consistent interface within the OS for the creation, management, and destruction of mappings to any physical memory across all devices. Gmem will simplify the overall architecture of the mapping system within the OS. It will enable the authors of device drivers to implement just the device-specific behavior that they need, rather than implementing a complete mapping system. Furthermore, Gmem will provide asynchronous interfaces and employ coupled page table management, which together will enable high performance and strong protection.In its never-ending quest for increased performance, the computing community should expect to see the continued rise of specialized accelerators, increased integration with graphics processing units, networking interfaces, and storage devices, and large amounts of non-volatile memory across the computing system. This conglomeration of components in next generation computing systems requires OS designers to rethink the ways in which the OS manages disparate memory. A broader impact of this project is that it will contribute to the significant innovations in OS software that will be needed to realize the full potential of these systems.Software artifacts and experimental data of long-term value that are created for this project will be available at https://github.com/rice-systems/gmem for at least three years beyond the project's end.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.

随着新的通用处理器实现的性能同比增长的下降，越来越多的设备，例如，现场可编程门阵列正被添加到计算机中以加速应用。因此，操作系统（OS）不仅必须管理在通用处理器上运行的应用程序对计算机内存的访问，而且还必须管理在各种加速器上运行的应用程序对计算机内存的访问。目前，这些加速器的内存访问由操作系统的不同、断开连接的部分管理，导致独立、冗余且通常效率低下的实现激增。这个项目的目标是用一个统一的框架来取代目前分散的架构，具体来说，这个项目的主要目标是创建一个通用的映射和保护系统，称为GARCH，它将在操作系统中提供一个单一的、一致的接口，用于创建、管理和销毁所有设备上任何物理内存的映射。它将使设备驱动程序的作者能够实现他们所需要的设备特定行为，而不是实现一个完整的映射系统。此外，Gencil将提供异步接口，并采用耦合的页表管理，这将共同实现高性能和强大的保护。在其永无止境的追求提高性能，计算社区应该期待看到专用加速器的持续增长，增加与图形处理单元，网络接口和存储设备的集成，以及跨计算系统的大量非易失性存储器。下一代计算系统中组件的这种聚集要求OS设计者重新思考OS管理不同内存的方式。该项目的一个更广泛的影响是，它将有助于实现这些系统的全部潜力所需的操作系统软件的重大创新。为该项目创建的具有长期价值的软件工件和实验数据将在https://github.com/rice-systems/gmem项目结束后至少三年内在www.example.com上提供。该奖项反映了NSF的法定使命，并通过使用基金会的学术价值和更广泛的影响审查标准。