功率感知系统的软件实现策略
Software Implementation Strategies for Power-Conscious Systems
魏学良   David S.L. Wei
报告人照片   David S.L. Wei received his Ph.D. degree in Computer and Information Science from the University of Pennsylvania in 1991. He is currently a Full Professor of Computer and Information Science Department at Fordham University. Dr. Wei has authored and co-authored more than 120 technical papers in various archival journals and conference proceedings. Dr. Wei ever served as A.E. and guest editor for some leading journals, such as IEEE J-SAC, IEEE TCC, IEEE TBD, etc.
  In this talk, we show the impact of various software implementation techniques on energy saving. Based on the observation that different instructions of a processor cost different amount of energy, we propose three energy saving strategies, namely (i) assigning live variables to registers, (ii) avoiding repetitive address computations, and (iii) minimizing memory accesses. We also study how a variety of algorithm design and implementation techniques affect energy consumption. In particular, we focus on the following aspects: (i) recursive versus iterative (with stacks and without stacks), (ii) different representations of the same algorithm, (iii) different algorithms – with identical asymptotic complexity – for the same problem, and (iv) different input representations. From our experimental results, we conclude that by suitably choosing an algorithm for a problem and applying the energy saving techniques, energy savings in excess of 60% can be achieved.
报告时间:2019年08月26日14时30分    报告地点:西区电三楼315会议室
报名截止日期:2019年08月26日    可选人数:30