...memory.

Machines such as the CRAY Y-MP can perform two loads, a store, and a multiply-add operation all in one cycle, whereas the CRAY-2 and IBM 3090 VF cannot. For further details of how the performance of the BLAS are affected by such factors see [19].

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...polyalgorithms

In a polyalgorithm the actual algorithm used depends on the computing environment and the input data. The optimal algorithm in a particular instance is automatically selected at runtime.

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