Software-controlled data prefetching is a promising technique for improving the performance of the memory subsystem to match today's high-performance processors. While prefctching is useful in hiding the latency, issuing prefetches incurs an instruction overhead and can increase the load on the memory subsystem. As a resu 1c are must be taken to ensure that such overheads do not exceed the benefits.
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Mowry et al. (1992) studied this question.
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