This work compares performance between the latest generation of parallel vector supercomputers and leading commodity-based superscalar architectures, across a broad range of scientific domains. Overall results show that the Japanese Earth Simulator achieves the highest aggregate performance on any architecture tested to date across our full application suite, demonstrating the tremendous potential of modern parallel vector systems. The last decade has witnessed a rapid proliferation of superscalar cache-based microprocessors to build high-end computing (HEC) platforms, primarily because of their generality, scalability, and cost effectiveness. However, the growing gap between sustained and peak performance for fullscale scientific applications on conventional supercomputers has become a major concern in high performance computing. This proble
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