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With the petaflop barrier broken, is it time to change the benchmark?
2008-11-20

At a presentation at the SC08 semi-annual supercomputing conference in Austin, Texas, an engineer with Oak Ridge National Laboratories in Tennessee who is an expert on the Linpack benchmark, suggested that the methodology used to determine supercomputer performance using Linmark may be behind the times. Specifically, Jack Dongarra -- the man credited with introducing the High-Performance Linpack (HPL) benchmark to the Top 500 program -- suggested that as supercomputers get bigger and can store more data, their lag times increase exponentially. This implies that making existing supercomputers bigger and faster eventually leads to a point of diminishing returns.

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