• Competition Pool
    October 23 11:00am
    lap swim more »
  • Homecoming: De-stress Fest
    October 23 6:00pm
    Kick back, relax, and relieve the stress of midterms at De-stress fest.  more »
  • Competition Pool
    October 24 5:30am
    lap swim more »
  • Indiana Civic Health Index Breakfast
    October 24 8:30am
    A launch event to announce the results of the Indiana Civic Health Index, an analysis of where Hoosiers stand on several indicators of civic engagement.  This initiative is led by the Indiana Bar Association. more »
  • Homecoming: Treat 'n' Tuesday
    October 24 10:00am
    Join Traditions Board and paint a pumpkin. In the spirit of Homecoming, we challenge you to paint a pumpkin that shows off your IUPUI pride! more »
Monday, October 23, 2017
    IU Calendar




    • Competition Pool
      October 23 11:00am
      lap swim more »
    • Homecoming: De-stress Fest
      October 23 6:00pm
      Kick back, relax, and relieve the stress of midterms at De-stress fest.  more »
    • Competition Pool
      October 24 5:30am
      lap swim more »
    • Indiana Civic Health Index Breakfast
      October 24 8:30am
      A launch event to announce the results of the Indiana Civic Health Index, an analysis of where Hoosiers stand on several indicators of civic engagement.  This initiative is led by the Indiana Bar Association. more »
    • Homecoming: Treat 'n' Tuesday
      October 24 10:00am
      Join Traditions Board and paint a pumpkin. In the spirit of Homecoming, we challenge you to paint a pumpkin that shows off your IUPUI pride! more »
    Monday, October 23, 2017
      IU Calendar




      • Competition Pool
        October 23 11:00am
        lap swim more »
      • Homecoming: De-stress Fest
        October 23 6:00pm
        Kick back, relax, and relieve the stress of midterms at De-stress fest.  more »
      • Competition Pool
        October 24 5:30am
        lap swim more »
      • Indiana Civic Health Index Breakfast
        October 24 8:30am
        A launch event to announce the results of the Indiana Civic Health Index, an analysis of where Hoosiers stand on several indicators of civic engagement.  This initiative is led by the Indiana Bar Association. more »
      • Homecoming: Treat 'n' Tuesday
        October 24 10:00am
        Join Traditions Board and paint a pumpkin. In the spirit of Homecoming, we challenge you to paint a pumpkin that shows off your IUPUI pride! more »
      Monday, October 23, 2017
        IU Calendar




        • Competition Pool
          October 23 11:00am
          lap swim more »
        • Homecoming: De-stress Fest
          October 23 6:00pm
          Kick back, relax, and relieve the stress of midterms at De-stress fest.  more »
        • Competition Pool
          October 24 5:30am
          lap swim more »
        • Indiana Civic Health Index Breakfast
          October 24 8:30am
          A launch event to announce the results of the Indiana Civic Health Index, an analysis of where Hoosiers stand on several indicators of civic engagement.  This initiative is led by the Indiana Bar Association. more »
        • Homecoming: Treat 'n' Tuesday
          October 24 10:00am
          Join Traditions Board and paint a pumpkin. In the spirit of Homecoming, we challenge you to paint a pumpkin that shows off your IUPUI pride! more »
        Monday, October 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




          • Competition Pool
            October 23 11:00am
            lap swim more »
          • Homecoming: De-stress Fest
            October 23 6:00pm
            Kick back, relax, and relieve the stress of midterms at De-stress fest.  more »
          • Competition Pool
            October 24 5:30am
            lap swim more »
          • Indiana Civic Health Index Breakfast
            October 24 8:30am
            A launch event to announce the results of the Indiana Civic Health Index, an analysis of where Hoosiers stand on several indicators of civic engagement.  This initiative is led by the Indiana Bar Association. more »
          • Homecoming: Treat 'n' Tuesday
            October 24 10:00am
            Join Traditions Board and paint a pumpkin. In the spirit of Homecoming, we challenge you to paint a pumpkin that shows off your IUPUI pride! more »
          Monday, October 23, 2017