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From: Lawrence D'Oliveiro <ldo@nz.invalid>
Newsgroups: comp.arch
Subject: Re: Is Intel exceptionally unsuccessful as an architecture designer?
Date: Fri, 20 Sep 2024 04:05:35 -0000 (UTC)
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On Fri, 20 Sep 2024 00:58:44 +0000, MitchAlsup1 wrote:

> Hint:: They can context switch every instruction.

How does that help?

> So if an instruction
> does not complete in its cycle, they switch to a different set of
> threads;

That will need to do its own memory accesses. But the memory interface is 
still busy trying to complete the access for the previous thread.

> Also note: a single instruction causes 32-128 threads to make 1 step of
> forward progress.

How many memory accesses does it take to complete that one step?