What programmers need to know about hardware prefetching? | Future Chips

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yass " Most common prefetchers today can only detect constant-stride patterns / Use arrays as much as possible. "

2012/12/03 リンク

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What programmers need to know about hardware prefetching? | Future Chips

Hardware prefetching is an important performance enhancing feature of today’s microprocessors. It... Hardware prefetching is an important performance enhancing feature of today’s microprocessors. It has been shown to improve performance by 10-30% without requiring any programmer effort. However, it is possible for a programmer to throw away this benefit by making naive design decisions. Avoiding the common pitfalls only requires the programmer to have a 10K foot view of how a hardware prefetcher