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I/O performance on a massively parallel Cray XT3/XT4

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3 Author(s)
Fahey, M. ; Oak Ridge Nat. Lab., Oak Ridge, TN ; Larkin, J. ; Adams, J.

We present an overview of the current status of input/output (I/O) on the Cray XT line of supercomputers and provide guidance to application developers and users for achieving efficient I/O. Many I/O benchmark results are presented, based on projected I/O requirements for some widely used scientific applications in the Department of Energy. Finally, we interpret and summarize these benchmark results to provide forward-looking guidance for I/O in large-scale application runs on a Cray XT3/XT4.

Published in:

Parallel and Distributed Processing, 2008. IPDPS 2008. IEEE International Symposium on

Date of Conference:

14-18 April 2008