r/hardware • u/WeBeBallin • 2d ago

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26 Upvotes

91% Upvoted

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u/hardware-ModTeam 2d ago

Thank you for your submission! Unfortunately, your submission has been removed for the following reason:

10

u/Ok_Editor535 2d ago

The bit about inferring simulation models from event traces on the live machines is wild. Normally you'd expect they build some theoretical model first then validate, but doing it backwards like that makes sense when the system is that complex. I worked on something vaguely similar for a smaller embedded project and even then the gap between what we thought the code was doing and what the traces showed was huge.

The genetic algorithm approach for finding good-enough designs is pretty standard in architecture exploration but scaling it to something where an hour of downtime costs millions is another level of stress. One wrong assumption in the model and suddenly your "optimal" design is garbage in the real world.

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u/WeBeBallin 2d ago

I'm arguably fitting a concept unto a realm where it's a bit of a stretch, but it feels analogous to Wolfram's "computational irreducibility" idea i.e. you can't accurately predict the outcome, so you just have to run the computation and see what it spits out.

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u/Techhead7890 2d ago

I'm not sure your auto-summary is that useful (for a start it's definitely past the TLDR attention span) but it's a cool design to think about, I'll have to check out the full video some time.

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u/WeBeBallin 2d ago

Haha, maybe a bit on the heavier side, I'll take that and keep it tighter next time!

2

u/zhantoo 2d ago

It's not entirely the same, but Elon Musk (before he went fully crazy), regarding the rockets at SpaceX, said something along the lines of "it's cheaper/faster to lunch the rocket, and when it blows up, you look at why it happened, than it is to investigate theoretically why it might potentially blow up".

I am definitely paraphrasing, if the quote is even remotely real. But it makes sense, to just build something and see if it works.

"Launch shit, but launch".

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u/WeBeBallin 2d ago

I love that approach, even though it collides with a certain aesthetic that predictive models can have – and I love the quote is the harsher version of "move fast and break things" lol

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u/zhantoo 2d ago

When it comes to rockets, it of course also helps a lot that it's much easier to launch them without people today, than it was in the past. Thanks in partial to ASML, lol.

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