ITR: Collaborative Hardware-Software Adaptation for Multimedia Applications

主要处理多媒体数据的移动系统有望成为许多应用领域的主导计算平台。这种系统的设计带来了一些新的挑战，因为它必须考虑苛刻的，动态的，多维的资源需求和约束，能源成为一流的资源。同时，多媒体应用程序在系统资源的输出质量以及峰值和平均需求之间的差异之间进行权衡的能力为优化提供了巨大的机会。因此，应对移动多媒体系统挑战的一种很有前途的方法是设计所有系统层，使其具有适应系统或应用程序变化的能力。此外，为了获得这些调整的全部好处，所有系统层必须合作以达到系统范围的全局最优配置。本研究旨在开发并演示一个集成的跨层自适应系统，其中硬件和所有软件层协同适应不断变化的系统资源和应用需求，在满足能源、时间和带宽资源限制的同时，寻求最大程度的用户满意度。这项工作预计会产生很大的影响，因为它将揭示以前无法获得的实质性性能改进的来源，对于许多应用程序领域日益重要的平台来说。

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.