• CLOSED
    August 23 12:00am
    closed more »
  • FINA Jr. World Championships
    August 23 12:00am
    swim meet more »
  • WOW: Team IUPUI Tables
    August 23 12:00am
    Team IUPUI Tables will be located across campus to answer all your questions and provide free jagswag! more »
  • FINA World Junior Swimming Championships
    August 23 6:00am
    This competition is being hosted by USA Swimming. more »
  • 2017 PETM Back to School Night
    August 23 5:30pm
    School of Physical Education and Tourism Management Back to School Night Join the School of Physical Education and Tourism Management (PETM) and the PETM Alumni Association on the Third Base Party Terrace at Victory Field. Cheer on the Indianapolis Indians as they play against the Toledo Mud Hens!  First pitch is thrown at 7:05 p.m., and more »
Wednesday, August 23, 2017
    IU Calendar




    • CLOSED
      August 23 12:00am
      closed more »
    • FINA Jr. World Championships
      August 23 12:00am
      swim meet more »
    • WOW: Team IUPUI Tables
      August 23 12:00am
      Team IUPUI Tables will be located across campus to answer all your questions and provide free jagswag! more »
    • FINA World Junior Swimming Championships
      August 23 6:00am
      This competition is being hosted by USA Swimming. more »
    • 2017 PETM Back to School Night
      August 23 5:30pm
      School of Physical Education and Tourism Management Back to School Night Join the School of Physical Education and Tourism Management (PETM) and the PETM Alumni Association on the Third Base Party Terrace at Victory Field. Cheer on the Indianapolis Indians as they play against the Toledo Mud Hens!  First pitch is thrown at 7:05 p.m., and more »
    Wednesday, August 23, 2017
      IU Calendar




      • CLOSED
        August 23 12:00am
        closed more »
      • FINA Jr. World Championships
        August 23 12:00am
        swim meet more »
      • WOW: Team IUPUI Tables
        August 23 12:00am
        Team IUPUI Tables will be located across campus to answer all your questions and provide free jagswag! more »
      • FINA World Junior Swimming Championships
        August 23 6:00am
        This competition is being hosted by USA Swimming. more »
      • 2017 PETM Back to School Night
        August 23 5:30pm
        School of Physical Education and Tourism Management Back to School Night Join the School of Physical Education and Tourism Management (PETM) and the PETM Alumni Association on the Third Base Party Terrace at Victory Field. Cheer on the Indianapolis Indians as they play against the Toledo Mud Hens!  First pitch is thrown at 7:05 p.m., and more »
      Wednesday, August 23, 2017
        IU Calendar




        • CLOSED
          August 23 12:00am
          closed more »
        • FINA Jr. World Championships
          August 23 12:00am
          swim meet more »
        • WOW: Team IUPUI Tables
          August 23 12:00am
          Team IUPUI Tables will be located across campus to answer all your questions and provide free jagswag! more »
        • FINA World Junior Swimming Championships
          August 23 6:00am
          This competition is being hosted by USA Swimming. more »
        • 2017 PETM Back to School Night
          August 23 5:30pm
          School of Physical Education and Tourism Management Back to School Night Join the School of Physical Education and Tourism Management (PETM) and the PETM Alumni Association on the Third Base Party Terrace at Victory Field. Cheer on the Indianapolis Indians as they play against the Toledo Mud Hens!  First pitch is thrown at 7:05 p.m., and more »
        Wednesday, August 23, 2017

          About This Event

          Summary

          Summary

          High end parallel and multi-core processors rely on compilers to perform the necessary optimizations and exploit concurrency in order to achieve higher performance. However, source code for high performance computers is extremely complex to analyze and optimize. In particular, program analysis techniques often do not take into account complex expressions during the data dependence analysis phase. Most data dependence tests are only able to analyze linear expressions, even though non-linear expressions occur very often in practice. Therefore, considerable amounts of potential parallelism remain unexploited. In this talk we propose new data dependence analysis techniques to handle such complex instances of the dependence problem and increase program parallelization. Our method is based on a set of polynomial time techniques that can prove or disprove dependences in source codes with non-linear and symbolic expressions, complex loop bounds, arrays with coupled subscripts, and if-statement constraints. In addition our algorithm can produce accurate and complete direction vector information, enabling the compiler to apply further transformations. To validate our method we performed an experimental evaluation and comparison against the I-Test, the Omega test and the Range test in the Perfect and SPEC benchmarks. The experimental results indicate that our dependence analysis tool is accurate, efficient and more effective in program parallelization than the other dependence tests. The improved parallelization results into higher speedups and better program execution performance in several benchmarks.

          Kleanthis Psarris is Professor and Chair of the Department of Computer Science at the University of Texas at San Antonio. He received his B.S. degree in Mathematics from the National University of Athens, Greece in 1984. He received his M.S. degree in Computer Science in 1987, his M.Eng. degree in Electrical Engineering in 1989 and his Ph.D. degree in Computer Science in 1991, all from Stevens Institute of Technology in Hoboken, New Jersey. His research interests are in the areas of Parallel and Distributed Systems, Programming Languages and Compilers, and High Performance Computing. He has designed and implemented state of the art program analysis and compiler optimization techniques and he developed compiler tools to increase program parallelization and improve execution performance on advanced computer architectures. He has published extensively in top journals and conferences in the field and his research has been funded by the National Science Foundation and Department of Defense agencies. He is an Editor of the Parallel Computing journal. He has served on the Program Committees of several international conferences including the ACM International Conference on Supercomputing (ICS) in 1995, 2000, 2006 and 2008, the IEEE International Conference on High Performance Computing and Communications (HPCC) in 2008, 2009, and 2010, and the ACM Symposium on Applied Computing (SAC) in 2003, 2004, 2005 and 2006.

          This seminar will be held on Thursday, January 27th at 11:15 am in SL 110

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          Contact Information

          DeeDee Whittaker
          whittakd@cs.iupui.edu

          Event Site --- None ---
          Registration --- None ---

          Event Schedule

          There are no upcoming dates for this event.

          IU Calendar




          • CLOSED
            August 23 12:00am
            closed more »
          • FINA Jr. World Championships
            August 23 12:00am
            swim meet more »
          • WOW: Team IUPUI Tables
            August 23 12:00am
            Team IUPUI Tables will be located across campus to answer all your questions and provide free jagswag! more »
          • FINA World Junior Swimming Championships
            August 23 6:00am
            This competition is being hosted by USA Swimming. more »
          • 2017 PETM Back to School Night
            August 23 5:30pm
            School of Physical Education and Tourism Management Back to School Night Join the School of Physical Education and Tourism Management (PETM) and the PETM Alumni Association on the Third Base Party Terrace at Victory Field. Cheer on the Indianapolis Indians as they play against the Toledo Mud Hens!  First pitch is thrown at 7:05 p.m., and more »
          Wednesday, August 23, 2017