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|AMD Opteron™ Processor-Powered Cray Supercomputers Post Best Overall
Results On HPC Challenge Benchmark Tests|
AUSTIN, TX and SEATTLE -Two Cray supercomputer
products that masterfully leverage the AMD Opteron™ processor and HyperTransport™ technology, the Cray XT3™ and Cray
XD1™ systems, have posted leading overall results on the HPC Challenge benchmark tests, AMD (NYSE: AMD) and Cray
(NASDAQ NM: CRAY) reported today.
HPC Challenge results are gaining importance as customers increasingly use
them to help decide which high-performance computers to buy. For example, CSCS, the Swiss National Supercomputing
Center, relied heavily on HPC Challenge results when it recently selected a Cray XT3 system with 1,100 AMD Opteron
processors that will be one of Europe's most powerful supercomputers.
According to CSCS Director
Marie-Christine Sawley, "We chose the HPC Challenge benchmark suite for our recent 'Horizon' procurement because
we can measure and analyze the characteristics of a given supercomputer architecture with it. It lowers the burden
on the bidders, speeds up your procurement project, and still allows you to gauge the effects of a given
architecture on your key user applications by mapping their characteristic requirements onto the individual HPCC
In comparing customer-reported HPC Challenge results for three large-scale
systems of about the same size, an 1,100-processor Cray XT3 supercomputer had the best scores on seven of the 10
"condensed results" tests, compared to an SGI Altix 3700 system with 1,008 processors and an IBM Blue Gene system
with 1,024 processors. In the seven tests, the Cray XT3 typically outperformed the next-best system by a factor of
two to five times, and was up to 17 times faster than the third-ranking system.
128-processor scalar systems, the Cray XD1 supercomputer demonstrated leading results on four tests, more than any
other microprocessor-based system. The Cray XD1 system did especially well in the random ring latency and global FFT
In addition, a Cray X1E™ vector supercomputer with 248 multistreaming processors was more
than 10 times faster than the nearest competitor on the important global random access test, measuring random
updates of memory.
Results cited are those posted as of June 15, 2005 on the HPC Challenge
"When systems do well across the board on the HPC Challenge
benchmark tests, as Cray supercomputers do, it's clear that they were purpose-built for high-performance
computing," said Steve Scott, Cray chief technology officer. "Many HPC systems today were designed for other markets
and do well on only one or two HPC Challenge tests. AMD Opteron processors and HyperTransport technology provide a
powerful foundation for the direct connect, balanced system architectures of our Cray XT3 and Cray XD1
"Cray supercomputers based on AMD Opteron processors with Direct Connect
Architecture give customers remarkable performance for their money on real-world problems," said Rich Oehler,
Corporate Fellow at AMD. "AMD64 technology is being designed into many of the world's most powerful computers,
including the world's largest AMD Opteron processor-based system, 'Red Storm,' a Cray supercomputer located at
Sandia National Laboratories, that when analyzed on real-world problems and applications, has no match for providing
architectural balance in a high-performance system."
About the HPC Challenge Benchmark Tests
Assembled by Jack Dongarra and Piotr Luszczek of the University of Tennessee, with collaborators from the U.S.
and Europe, the HPC Challenge benchmark suite tests multiple capabilities that can make a major difference in the
real-world performance of HPC systems. The test suite includes High Performance Linpack, the single test of
theoretical peak processor performance that is the basis for the semi-annual TOP500 supercomputer ranking, and
substantially augments this with six additional tests. More tests may be added over time.
"Linpack is useful, but no single test can accurately reflect the overall performance of HPC systems,"
Dongarra said. "The HPC Challenge benchmark test suite stresses not only the processors, but the memory system and
the interconnect. It is a better indicator of how an HPC system will perform across a spectrum of real-world
The new set of tests, co-sponsored by the National Science Foundation, U.S.
Department of Energy and DARPA HPCS (High Productivity Computing Systems) program, was introduced at the SC2003
annual supercomputing conference in November 2003.
Viernes, 17 Junio, 2005 - 10:31