Re:Intel i7 loop performance anomaly
by comex on Tuesday December 03, 2013 @08:26PM
(#6844440)
Boy. I know more or less informed speculation is the best we can do, but it would sure be fun if detailed information about the CPU were public so such things could actually be tracked down.
[ Parent
| on HN ]
Re:Intel i7 loop performance anomaly
by anon_cownerd on Wednesday December 04, 2013 @01:31AM
(#6845366)
I agree, but asking this of Intel is the equivalent to asking Google to bare the details of their search ranking algorithm so that we could understand some odd search result. The clever tricks and optimizations they do in the cores are their crown jewels, just as the guts of clever, highly-tuned algorithms are for many software companies. It just so happens that many people have a high-level knowledge of modern out-of-order CPUs (just as many people have read Google's PageRank paper) and so can speculate about what might be going on inside.