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ltbarcly3 • today at 5:50 PM • 1 reply • view on HN

Lol it's always cute to see the amount of confidence that people have for AI when they can't tell if the work it did is actually good.


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IshKebab • today at 6:32 PM

I don't think that's quite fair - this guy is clearly quite familiar with CPU design, it's very easy to run coremark, dhrystone, etc. to get a decent idea of performance, and for verification there's a reference model written in Sail you can compare against (though tbf it sounds like he didn't). AI is good at writing large test corpuses these days too.

So I would say it is relatively easy to tell if a vibe coded RISC-V CPU is actually good today. It's not like non-vibe coded RISC-V CPUs were amazingly well verified before anyway (except Ibex anyway). Even CVA6 has had some embarrassing bugs.

I expect this is a decent RISC-V core, but I also expect I could make one just as easily.

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