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dagmxtoday at 2:46 PM1 replyview on HN

This is a pretty phenomenal article.

Even for those who don’t care about LLM use, this is just a great article on optimizing Swift performance, which is sadly something that doesn’t have a lot of written material for.

I’m curious if the AMX instructions are truly secret. In theory you could use an M4 or above and get them via SME I think but I’m just guessing as I’ve never tried intrinsic from Swift myself.


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mathisfun123today at 3:34 PM

> get them via SME

I have no idea what this means - AMX was replaced by SME on M4. It's a new unit not just an "abstract intrinsic" (which would make zero sense).

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