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Recent advances in power aware design



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Recent Advances in Power Aware Design Tiantian Xie Bogdan Wilamowski Department of Electrical and Computer Engineering Auburn University Auburn USA Email tzx0004 wilambm auburn edu Abstract The paper presents the state of the art study on the recently published literatures subjected to power aware design in various industrial applications The basic conception of power aware design is placed at first and then the recent progress is investigated For each paper a brief summary is given to introduce the related power awareness design technologies and applications Index Terms power awareness embedded system energy management I INTRODUCTION With modern electronic products becoming faster smaller and cheaper in the past half century the power management emerges as a focal point in many commercial systems In high performance systems power aware design techniques aim to maximize performance under power dissipation and power consumption constraints such as in portable equipment In addition a power aware design can also help to reduce the energy cost P Ranganathan a distinguished technologist in the HP lab wrote an article about the concept current research point and future work in Power aware computing 4 recently It is obvious that there is a minimum amount of energy needed to perform certain tasks and a corresponding minimum amount of heat extracted to avoid thermal problems However designs often introduce additional inefficiencies above the actual energy These inefficiencies are often introduced when the system design must reconcile complex trade offs that are difficult to avoid They are often designed for the most aggressive work load performance and worst case risk tolerance Such designs can lead to resource over provisioning to better handle transient peaks and offer redundancy in the case of failure Further sometimes the traditional design focused on the small performance improvement by the cost of power and heat extraction How to reduce these inefficiencies is called



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