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List of Top 500 Supercomputer Sites Compiled

Statistics on high-performance computers are of major interest to manufacturers, users, and potential users. These people wish to know not only the number of systems installed, but also the location of the various supercomputers within the high-performance computing community and the applications for which these computers are being used. Such statistics can facilitate the establishment of collaborations and the exchange of data and software, providing a better understanding of the high-performance computer market.

Statistical lists of supercomputers are not new. Every year since 1986, Hans Meuer has published system counts of the major vector computer manufacturers, based principally on those at the Mannheim Supercomputer Seminar. Statistics based merely on the name of the manufacturer are no longer useful, however. New statistics are required that reflect the diversification of supercomputers, the enormous performance difference between low-end and high-end models, the increasing availability of massively parallel processing (MPP) systems, and the strong increase in computing power of the high-end workstations.

To provide this new statistical foundation, Meuer, Erich Strohmaier, and CRPC researcher Jack Dongarra decided to assemble and maintain a list of the 500 most powerful computer systems. The list has been compiled with the help of high-performance computer experts, computational scientists, manufacturers, and members of the Internet community who responded to a questionnaire that was sent out. Thanks go out to all the contributors for their cooperation. Parts of other published statistical lists on high-performance computing hardware were also used.

In this "Top 500" list, computers are ranked by their performance on the Linpack Benchmark. While every attempt was made to verify the results obtained from users and vendors, errors are bound to exist and should be brought to the group's attention. They intend to update this list quarterly to keep track with the evolution of computers. Comments and information are welcome and can be sent by electronic mail to top500@rz.uni-mannheim.de .

To receive a copy of the Top 500 report, use anonymous ftp: netlib2.cs.utk.edu; cd benchmark; get top500.ps.

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