National Center for Supercomputing Applications

Help for Supercomputer Users

NCSA's User Support/Help Desk
Phone: 217-244-0710
Email: help@ncsa.illinois.edu

XSEDE website

NCSA leads the Extreme Science and Engineering Discovery Environment (XSEDE), a nationwide collaboration that provides U.S. researchers with the world's most advanced, powerful collection of integrated digital resources and services.

Blue Waters: Sustained Petascale Performance

One year ago, NCSA and Cray joined forces to create the Blue Waters sustained petascale computing system. Over the past year, the entire system has been deployed and is performing well in acceptance tests, delivering sustained performance of 1 petaflop on a range of science and engineering apps.

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Top problems with the TOP500

NCSA's Bill Kramer argues that the TOP500 list as it is currently compiled does not provide an accurate evaluation of supercomputers and that broader, more accurate metrics are needed. NCSA will not submit data on the Blue Waters petascale supercomputer for the TOP500 list.

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