ITR: Collaborative Hardware-Software Adaptation for Multimedia Applications

点击翻译按钮获取中文摘要

Mobile systems primarily processing multimedia data are expected to becomea dominant computing platform for many application domains. The design ofsuch systems imposes several new challenges, as it must consider demanding,dynamic, and multidimensional resource requirements and constraints, withenergy becoming a first-class resource. At the same time, the ability ofmultimedia applications to trade off output quality for system resourcesand the difference between their peak and average demands offers a hugeopportunity for optimization.A promising approach to meet the challenges of mobile multimedia systems,therefore, is to design all system layers with an ability to adapt inresponse to system or application changes. Further, to reap the fullbenefits of these adaptations, all system layers must cooperate to reach asystem-wide globally-optimal configuration. This research seeks to developand demonstrate an integrated cross-layer adaptive system where hardwareand all software layers cooperatively adapt to changing system resourcesand application demands, seeking to maximize user satisfaction whilemeeting resource constraints of energy, time, and bandwidth. This work isexpected to have a large impact because it will expose sources ofsubstantial performance improvement not available before, for a platform ofincreasing importance to many application domains.