时间：2011-06-17（周五）下午3:00-4:30

地点：校学术活动中心二楼小报告厅

报告人：谢涛，博士，Associate Professor

单位：美国圣地亚哥州立大学(San Diego State University)计算机科学系

题目：PEARL: Performance, Energy, and Reliability Balanced Dynamic Data Redistribution for Next Generation Disk Arrays

摘要：Current disk arrays consist purely of hard disk drives, which normally provide huge storage capacities with low-cost and high-throughput for data-intensive applications. Nevertheless, they have some inherent disadvantages such as long access latencies and energy-inefficiency due to their build-in mechanical mechanisms. Flash-memory based solid state disks, on the other hand, although currently more expensive and inadequate in write cycles, offer much faster random read accesses and are much more robust and energy efficient. To combine the complementary merits of hard disks and flash disks, in this project we propose a hybrid disk array architecture named HIT (hybrid disk storage) for data-intensive applications. Next, a dynamic data redistribution strategy called PEARL (performance,energy,andreliability balanced), which can periodically redistribute data between flash disks and hard disks to adapt to the changing data access patterns, is developed on top of the HIT architecture.

报告人简介：谢涛博士是美国圣地亚哥州立大学计算机科学系的终身副教授。主要研究领域为高性能计算、存储系统、集群及网格计算、并行处理、分布式系统、实时嵌入式系统、动态资源管理及性能评估。主持过多项美国国家科学基金项目。在IEEE Transactions on Parallel and Distributed Systems, ACM Transactions on Storage，IEEE Transactions on Computers，ACM Transactions on Embedded Computing System等国际刊物和会议上发表论文约50余篇，担任IEEE Transactions on Computers，IEEE Transactions on Parallel and Distributed Systems，IEEE Transactions on Knowledge and Data Engineering等多种杂志和国际会议的审稿人，并担任过多次国际会议的专题主席。2010年获得了圣地亚哥州立大学科学学院杰出教授奖，2009年获得美国国家科学基金会早期科研生涯奖，2007年获得Langmuir奖提名。