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June 1999

The 13th TOP500 list was published at the Supercomputer 1999 in Mannheim (June 10-15, 2000 ).

The upgraded Intel ASCI Red system at Sandia National Laboratory with achieved performance of over 2.1 TFlop/s using 9472 Pentium processors remains the number one computer. The ASCI Blue Mountain system at Los Alamos National Laboratory is number two with 1.6 TFlop/s. These are the only two systems currently exceeding the 1 TFlop/s level on the Linpack benchmark. However the TOP500 already contains 7 systems exceeding 1 TFlop/s peak performance.

The top 10 positions are taken by the 3 DOE ASCI machines, 6 SGI T3E systems and one new Hitachi SR8000 systems at the University of Tokyo. The performance level needed to be listed in one of the first 10 positions has shifted to above 1/2 TFlop/s.

The list continues to change rapidly in all ranges of performance. 70 systems exceed the mark of 100 GFlop/s this time. The last entry of the TOP500 list shows now a performance rate of 24.73 GFlop/s compared to 17.12 GFlop/s in November 1998. 194 systems fell off the list in the last half year due to this increase in the entry level performance. The total accumulated performance of all 500 systems grew from 29.6 TFlop/s in November 1998 to 39.1 TFlop/s in June 1999.

SGI is again leading the list with 182 systems (36.4%) and 48% of the installed Linpack performance. IBM is back in second position with 118 systems ahead of Sun Microsystems with 95 systems.

The number of industrial and commercial sites listed in the TOP500 continues to rise strongly with now 241 systems, which is almost half of the list. Sun and IBM each with 78, SGI with 50 systems and Hewlett-Packard with 30 systems account for almost all of these sites.

The number of "Network of Workstations" is on the rise with now 5 such systems listed. 3 of these were assembled by the installation site while the other two were integrated by Compaq and Siemens. An additional 19 systems on the TOP500 are clusters built with larger SMPs as building nodes.

For more information about the sites and systems in the list, click on the links or view the complete list.