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Special report: Graphics processing units speed results in extreme-scale supercomputers

Hybrid platforms accelerate answers and insights in science and engineering

The Accelerating Computational Science Symposium 2012 report.

In the quest to simulate the natural world from subatomic particles to the vast cosmos and the engineered world from turbines to advanced fuels, can scientists and engineers benefit from extreme-scale supercomputers that use application-code accelerators called GPUs (for graphics processing units)? Comparing GPU accelerators with today's fastest central processing units (CPUs), early results from diverse areas of research show 1.5- to 3-fold speedups for most codes. That acceleration means increased realism of simulations and decreased time to results. With the availability of new, higher-performance GPUs later this year, such as the Kepler GPU chip to be installed in the 20-petaflop Titan supercomputer at Oak Ridge National Laboratory (ORNL), application speedups are expected to be even more substantial.

A special report titled Accelerating Computational Science Symposium 2012 details these findings, which were presented earlier this year at Accelerating Computational Science Symposium 2012 in Washington, D.C. The Oak Ridge Leadership Computing Facility, which ORNL operates for the U.S. Department of Energy Office of Science, co-hosted the meeting with the National Center for Supercomputing Applications and the Swiss National Supercomputing Centre. Additional sponsors were Cray Inc., and NVIDIA. The meeting convened nearly 100 experts in science, engineering, and computing from around the world to discuss research advances that are now possible with extreme-scale hybrid supercomputers, which combine traditional CPUs with high-performance, energy-efficient GPUs. Attendees explored how hybrid supercomputers speed discoveries, such as deeper understanding of phenomena from earthquakes to supernovas, and innovations, such as next-generation catalysts, materials, engines, and reactors.


The Accelerating Computational Science Symposium 2012 report is available for download here: http://www.olcf.ornl.gov/wp-content/uploads/2010/03/ACSS_FINAL_web.pdf.

óby Dawn Levy


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