June 16-20, 2013

Leipzig, Germany

Session Details

Name: High-End Systems towards Exascale
Time: Thursday, June 20, 2013
9:00 AM - 10:30 AM
Room:   Hall 1
CCL - Congress Center Leipzig
Breaks:10:30 AM - 11:00 AM Coffee Break
Chair(s):   Erich Strohmaier, LBNL
Abstract:   The session will demonstrate some activities towards Exascale-Systems under various points of view.

  • The lessons learned from applications in moving them from conventional CPU architectures to hybrid system (Titan supercomputer at the Oak Ridge National Laboratory) and the resulting implications for the HPC-community.

  • The increased scale of computation, depth of memory hierarchies, range of latencies, and other topics will continue to have a major impact on software and algorithm developments. On the basis of five areas of research the importance impact for these developments will be presented.

  • The rapidly growing scale of modern scientific computing is exacerbating issues of numerical reproducibility. A computation running on various numbers of CPUs may give significantly different numerical results (i.e. highly ill-conditioned underlying systems). The presentation will describe several types of scientific computations where these difficulties are seen, together with how they have been handled using one of a variety of software solutions.

  • The enormous pressure to improve the combustion efficiency in transportation and power generation devices will persist well into this century. One key study in this area is the development of predictive models coupling chemistry with turbulent transport under real-world conditions. The co-design approach (within the Center for Exascale Simulation of Combustion in Turbulence/ExaCT) of combining architectural simulation, machine independent measurements and analysis to explore hardware tradeoffs, with combustion proxy applications representing the workload to the Exascale ecosystem, will be described.
Presentations: What Does Titan Tell Us about Preparing for Exascale Supercomputers?
9:00 AM - 9:20 AM
    Buddy Bland, ORNL
Critical Issues at Exascale for Algorithm & Software Design
9:20 AM - 9:40 AM
    Jack Dongarra, University of Tennessee & ORNL
Numerical Reproducibility in Exascale Computing
9:40 AM - 10:00 AM
    David H. Bailey, LBNL
Exascale Co-Design of Combustion in Turbulence (ExaCT)
10:00 AM - 10:20 AM
    Jacqueline H. Chen, Sandia National Laboratories
Questions & Answers
10:20 AM - 10:30 AM
Program may be subject to changes.