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A comment on Ask HN: Do you feel the quality of SWE has gone down?. Parent comment

Re:Ask HN: Do you feel the quality of SWE has gone down? by jfim on Saturday November 23, 2019 @04:36PM (#21616735)
The loops should be inverted. It should be for y, then for x, which accesses the memory in a linear fashion instead of in stride.

This presentation (PDF) explains why: https://www.aristeia.com/TalkNotes/ACCU2011_CPUCaches.pdf

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