I/O Performance on a Massively Parallel Cray XT3/XT4

Conference · Mon Dec 31 23:00:00 EST 2007

OSTI ID:931129

Fahey, Mark R ^[1]; Larkin, Jeffrey M ^[1]; Adams, Joylika Yvette ^[1]

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1. ORNL

This paper will present an overview of the current status of I/O on the Cray XT line of supercomputers and provide guidance to application developers and users for achieving efficient I/O. A large amount of I/O benchmark results will be presented, motivated by projected I/O requirements for some widely-used scientific applications in the DOE. Finally, the authors will interpret and summarize these benchmark results to give forward-looking guidance for I/O in large-scale application runs on a Cray XT3/XT4.

• Research Organization: Oak Ridge National Laboratory (ORNL); Center for Computational Sciences
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 931129
• Country of Publication: United States
• Language: English

Related Subjects

97 MATHEMATICS AND COMPUTING
99 GENERAL AND MISCELLANEOUS
COMPUTER CODES
CRAY COMPUTERS
PARALLEL PROCESSING
PERFORMANCE
RECOMMENDATIONS
SUPERCOMPUTERS