From Wikipedia, the free encyclopedia Cray XT5
Cray XT5
Cray XT5 urable Processor Units (RPUs) provided by DRC Comput-
er Corporation.
The XT5m variant is a mid-ranged supercomputer
with most of the features of the XT5, but having a
2-dimensional torus network topology and scalable to 6
cabinets.
In the fall of 2008, Cray delivered a 1.3 petaflops XT5
system to National Center for Computational Sciences at
Oak Ridge National Laboratories. This system, with over
150,000 processing cores, was dubbed "Jaguar" and was
the second fastest system in the world for the LINPACK
Jaguar, a Cray XT5 supercomputer at National Center for benchmark,[2] the fastest system available for open sci-
Computational Sciences at Oak Ridge National Laboratories
ence and the first system to exceed a petaflops sustained
Active November 6, 2007 performance on a 64-bit scientific application.[3]
Jaguar underwent an upgrade to 224,256 cores in
Ranking TOP500
2009, after which its performance jumped to 1.75
Sources top500.org petaflops, taking it to the number one position in the
34th edition of the TOP500 list in fall 2009.[4] It remained
number one in the June 2010 edition,[5] but in October
2010 was surpassed by the Chinese Tianhe-1A, which
achieved a performance of 2.57 petaflops.[6]
Another XT5 system, Kraken, with 99,072 cores and
0.83 petaflops, is currently at position number eight in
the TOP500 list as of November 2010.[5]
References
[1] Cray XT System Software 2.1 Release Overview
(S–2425–21). Cray Inc. 2008. http://www.nersc.gov/
vendor_docs/cray/S-2425-21-OS2.1-Release-
Overview.pdf.
[2] TOP500 November 2008
Kraken, a Cray XT5 supercomputer at National Institute for
[3] National Center for Computational Sciences: Jaguar
Computational Sciences at Oak Ridge National Laboratories
[4] TOP500 November 2009
[5] ^ TOP500 June 2010
The Cray XT5 is an updated version of the Cray XT4
[6] "China claims supercomputer crown". BBC News
supercomputer, launched on November 6, 2007. It in-
Online. 28 October 2010. http://www.bbc.co.uk/
cludes a faster version of the XT4’s SeaStar2 interconnect
news/technology-11644252. Retrieved 29 October
router called SeaStar2+, and can be configured either
2010.
with XT4 compute blades, which have four dual-core
AMD Opteron processor sockets, or XT5 blades, with
eight sockets supporting dual or quad-core Opterons. External links
The XT5 uses a 3-dimensional torus network topology. • Cray Introduces Next-Generation Supercomputers
The XT5 family run the Cray Linux Environment, for- • Cray Linux Environment
merly known as UNICOS/lc.[1] This incorporates SUSE
Linux Enterprise Server and Cray’s Compute Node Linux.
The XT5h (hybrid) variant also includes support for
Cray X2 vector processor blades, and Cray XR1 blades
which combine Opterons with FPGA-based Reconfig-
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From Wikipedia, the free encyclopedia Cray XT5
Categories:
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• Computer hardware stubs
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