Collaborative Research: CSR---EHS: Cross-System Modeling and Management for Variation-Adaptive Computing

这个项目的目标是为开发低级系统建模和参数调优技术，以及将它们与高级体系结构和系统管理方法联系起来，制定策略和抽象。该项目还旨在通过更深入的分析方法支持现有的制造后调整技术，并在系统使用过程中使用更动态的管理技术来增强这些一次性调整。要从非常静态的（一次性的）调优转向非常动态的（持续的）功率性能调优，需要具有不同细节和抽象的模型。这允许操作系统动态使用快速但抽象的模型，以便动态调整功率/热行为，以保持在预算范围内，同时满足性能目标。也可以使用微架构技术，但同样需要通过良好的模型和度量技术来指导它们的使用。该项目将处理这些建模问题和相关的动态管理技术。该研究项目力求在几个方面产生广泛的影响。首先，该项目具有知识传播和技术转让的重要组成部分。本项目提出的建模和管理技术将被传播和免费发布。在对本科生研究和代表性不足群体的大力支持的基础上，pi将通过这种合作继续并扩大此类活动。由于CMU和普林斯顿的地理位置接近，在整个项目中，统一两种努力的小组会议将是可能的。

The goal of this project is to lay out strategies and abstractions for developing lower-level system modeling and parameter tuning techniques, and for linking these to higher-level architectural and system management approaches. The project also aims to back existing post-manufacturing tuning techniques with deeper analytic methods, and to augment these one-time adjustments with more dynamic management techniques that are ongoing as the system is in use. To make the shift from very static (one-time) tuning towards very dynamic (ongoing) power-performance tuning, one needs models whose detail and abstraction vary. This allows fast, but abstract models to be used dynamically by the operating system, in order to dynamically adjust power/thermal behavior in order to stay within budget while also meeting performance goals. Microarchitectural techniques can also be employed, but likewise need to be informed by good models and measurement techniques to guide their use. The project will address these modeling issues and the associated on-the-fly management techniques.The research program pursues broad impact in several ways. First, the project has an important component for knowledge dissemination and technology transfer. The modeling and management techniques proposed in this project will be disseminated and released for free use. Building on a record of strong support for undergraduate research and underrepresented groups, the PIs will continue and broaden such activities through this collaboration. Because of the geographic proximity of CMU and Princeton, group meetings unifying the two efforts will be possible throughout the project.