CAREER: Algorithms and Implementations For New Storage Technologies

新的和新兴的固态非易失性（NV）技术（诸如NAND闪存和相变存储器）创建了一类新的高速存储设备，既作为传统的I/O系统又作为系统主存储器的扩展。为了在未来的计算机中充分利用这些技术，我们需要能够建模和理解它们在这样的系统中的行为，并创建算法和架构，利用它们的优势，同时弥补它们的弱点。这项工作（a）研究固态持久存储器技术的系统行为的模型和算法，以实现今天的技术不可能实现的性能，可靠性和功能，（B）检查操作系统到存储接口的替代模型以最佳地利用NV技术特性，以及（c）研究新的操作系统算法，用于管理通过在系统内的主存级混合NV和DRAM技术而呈现的新的存储器模型。作为计算机系统中的主要持久介质的状态存储为应用利用存储的方式的变革性改变提供了机会;本研究的目标是实现这些变化，而不是通过迄今为止与这些技术一起使用的磁盘仿真策略来实现可能的增量改进。研究成果将包括开源软件和硬件;该项目还涉及开发本科操作系统教育课程，以及中学、本科和研究生阶段的学生参与。

New and emerging solid-state non-volatile (NV) technologies such as NAND Flash and Phase Change Memory create a new class of high-speed storage devices, both as traditional I/O systems and as extensions of system main memory. To make best use of these technologies in tomorrow's computers we need to be able to model and understand their behavior in such systems, and create algorithms and architectures which leverage their strengths while compensating for their weaknesses.This work (a) investigates models and algorithms for system behavior of solid-state persistent memory technologies, to achieve performance, reliability, and functionality not possible with today's techniques, (b) examines alternate models for OS-to-storage interfaces to make best use of NV technology characteristics, and (c) researches new operating system algorithms for managing the novel memory model presented by mixing NV and DRAM technologies at the main-memory level within a system.The coming transition from disk to low-latency solid-state storage as the primary persistent media in computer systems presents an opportunity for transformative changes in the way applications make use of storage; the goal of this research is to achieve such changes, rather than the incremental improvements possible via the disk emulation strategy used with these technologies to date. Research results will include open-source software and hardware; the project also involves development of curricula for undergraduate operating systems education and student involvement at the secondary, undergraduate, and graduate level.