CSR---PDOS: Liberating Personal Computing from Hardware

本研究的目标是消除用户状态与特定计算硬件的紧密绑定。近30年前，这种紧密的联系伴随着个人电脑的诞生，从那时起就一直没有改变过。它有许多负面后果：硬件升级是痛苦的，灾难恢复是复杂的，总拥有成本很高。它还迫使移动计算进入一种范式，即每个用户都携带个人硬件，而不是在旅行中免提并利用无处不在的硬件。拟议的研究旨在开发一种名为“互联网暂停/恢复（ISR）”的按需个人计算的新愿景，该愿景利用了无处不在的互联网。本研究探讨了两种成熟技术的交叉问题：虚拟机（VM）技术和分布式文件系统技术。通过在分布式文件系统上分层虚拟机，执行积极的客户端缓存，用户的整个个人计算环境（操作系统，应用程序和用户文件）可以准确安全地传送到互联网上的任何地方。拟议的研究涵盖了操作系统、分布式系统、移动和普适计算，以及安全和隐私。它有三个主要的推力：(a)应对巨大的VMState， (b)保护VM状态的隐私，(c)动态改变客户端厚度。每个推力的工作包括新技术和算法的概念开发，以及它们在原型背景下的实现和实验验证。该原型将以开源形式传播，供其他研究人员和行业使用。

The goal of this research is to remove the tight binding of userstate to specific computing hardware. This tight binding aroseat the birth of personal computing nearly three decades ago, andhas continued unchanged since that time. It has many negativeconsequences: hardware upgrades are painful, disaster recovery iscomplex, and total cost of ownership is high. It also forcesmobile computing into a paradigm of each user carrying personalhardware, rather than traveling hands-free and taking advantageof pervasive hardware.The proposed research aims for a new vision of on-demand personalcomputing called "Internet Suspend/Resume (ISR)" that exploitsthe ubiquitous presence of the Internet. This research exploresissues at the intersection of two well-established technologies:virtual machine (VM) technology and distributed file systemtechnology. By layering a VM on a distributed file system thatperforms aggressive client caching, a user's entire personalcomputing environment (operating system, applications and userfiles) can be accurately and safely delivered anywhere on theInternet.The proposed research spans operating systems, distributedsystems, mobile and pervasive computing, and security andprivacy. Its has three major thrusts: (a) Coping with Huge VMState, (b) Preserving Privacy of VM State, and (c) Dynamically VaryingClient Thickness. The work in each thrust includes conceptualdevelopment of novel techniques and algorithms, as well as theirimplementation and experimental validation in the context of aprototype. This prototype will be disseminated in open sourceform, for use by other researchers and by industry.