News & Events

  • Udayanga Wickramasinghe delivers a talk at ROSS 2014

    Date: 06/10/2014

    The International Workshop on Runtime and Operating Systems for Supercomputers(ROSS 2014) was held in conjunction with ICS 2014, Munich, Germany on June 10, 2014.

    Udayanga delivered the talk on: "Hybrid MPI – A Case Study on Xeon Phi Platform"; U. S. Wickramasinghe, Greg Bronevetsky, Andrew Lumsdaine, and Andrew Friedley.

    ABSTRACT
    New many-core architectures such as Intel Xeon Phi offer applications significantly higher power efficiency than conventional multi-core processors. However, while this processor's compute and communication performance is an excellent match for MPI applications, leveraging its potential in practice has proven difficult because of the mismatch between the MPI distributed memory model and this processor's shared memory communication hardware. Hybrid MPI is a high performance portable implementation of MPI designed for communication over shared memory hardware. It shares the heaps of all the MPI processes that run on the same node, enabling them to communicate directly without unnecessary copies. This paper describes our work to port Hybrid MPI to the Xeon Phi platform, demonstrating that Hybrid MPI offers better performance than the native Intel MPI implementation in terms of memory bandwidth, latency and benchmark performance.

    You can read the rest of the study here.
    You can see the slides here.

    Great job, Udayanga!