Comparison of Cray XT3 and XT4 Scalability

Conference · Sun Dec 31 23:00:00 EST 2006

OSTI ID:958788

Worley, Patrick H ^[1]

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1. ORNL

The Cray XT3 and XT4 have similar architectures, differing primarily in memory performance and in bandwidth between the node and interconnect. This paper evaluates and compares the scalability of the XT3 and XT4. Kernel benchmarks are used to verify and to quantify the performance differences between the systems. Application benchmarks are used to examine the impact of these differences on scalability. Both kernel and application benchmarks are used to identify how to use the systems most efficiently.

• 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: 958788
• Country of Publication: United States
• Language: English

Related Subjects

97 MATHEMATICS AND COMPUTING
BENCHMARKS
CRAY COMPUTERS
KERNELS
PERFORMANCE
climate application codes
computer system performance
performance scalability