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By “encouragement” I think he means “10 years of constant badgering”.

By “encouragement” I think he means “10 years of constant badgering”.

Properties5
typearchive
sourcetwitter
date2023-07-31
tagsarchive, twitter, mike_acton
descriptionBy “encouragement” I think he means “10 years of constant badgering”.

Jul 31, 20231 min read

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Source

  • URL: https://x.com/mike_acton/status/1685875678087147521
  • Author: Mike Acton (@mike_acton)
  • Posted: 2023-07-31 04:50:58

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1/ @mike_acton

By “encouragement” I think he means “10 years of constant badgering”.

If you want the definitive paper on fast reciprocal square root approximation, read Mike Day’s paper: https://arxiv.org/pdf/2307.15600.pdf

2/ @mike_acton

Branches: 2023-07-31-jbaert-wild, 2023-07-31-olafurw-degree-2-one-is-also-fun-86-fold-improvement, 2023-07-31-nullspector-thats-a-nice-precision-but-shouldnt-we-just-use, 2023-07-31-damianGray-what-the-fuck, 2023-08-04-anilcanglk12-0-0000002000108-accurracy-with-one-iteration

5 items under this folder.

  • Aug 04, 2023

    @mike_acton 0.0000002000108 accurracy with one iteration:

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  • Jul 31, 2023

    @mike_acton // what the fuck?

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  • Jul 31, 2023

    @mike_acton Wild.

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  • Jul 31, 2023

    @mike_acton That's a nice precision but shouldn't we just use rsqrtss ? It's less precise but surely faster in recent microarchitectures.

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  • Jul 31, 2023

    @mike_acton degree-2 one is also fun, 86 fold improvement.

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