Dr. Li Zhang is the manager of the System Analysis and Optimization group at IBM T.J. Watson Research Center. His research interests include design and optimization of high performance big data systems; performance analysis, control, scheduling, and resource allocation in parallel and distributed systems; traffic modeling and prediction for large scale computer systems. He has also been working on measurement based clock synchronization algorithms. He has co-authored over 100 technical articles and over 50 patents. He received IBM's Outstanding Technical Achievement Award and Research Division Award for his work in performance modeling and optimization for computer systems. He further received IBM's prestigious Corporate Award and Outstanding Technical Achievement Award for developing advanced clock synchronization mechanisms for mainframe computers. A math major at Beijing University, he received his M.S. in Mathematics from Purdue University and his Ph.D. in Operations Research from Columbia University.