IBM BlueGene is the world's fastest computer once again

The BlueGene/L System, jointly developed by IBM and the U.S. Department of Energy, remains the world's fastest supercomputer, topping the latest biannual list that saw five new entrants into the top 10.

The BlueGene/L System has held the No. 1 spot since November 2004. The latest list of top 500 computers was released Monday at SC07, the international conference on high-performance computing in Reno, Nev.

The current IBM system has been significantly expanded, achieving a Linpack benchmark performance of 478.2 teraflops. A teraflop (TFlop/s) equals a trillion calculations per second. Six months ago, the BlueGene held the top position with 280.6 TFlop/s.

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See the Top 500 Supercomputers