Comment on An in-space construction firm says it can help build massive data centers in orbit

• vrighter@discuss.tchncs.de ⁨3⁩ ⁨days⁩ ago

  and forget about running 4nm chips in space. shit has to be radiation hardened, which means bigger process nodes and higher energy cost, and lower speed

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  • FaceDeer@fedia.io ⁨3⁩ ⁨days⁩ ago

    Another thing they probably didn't think of. Nobody's run chips in space before.

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    • vrighter@discuss.tchncs.de ⁨3⁩ ⁨days⁩ ago

      they did think of it. lots of people have. I just mentioned what was required. Rad hardened processors are usually 10 to 20 times slower than what we have on the surface

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      • FaceDeer@fedia.io ⁨2⁩ ⁨days⁩ ago

        So don't use rad-hardened processors, put them in a radiation vault instead. Those become more mass-efficient the more hardware you're putting inside them.

        Really, I assure you the people proposing these things have put more thought and expertise into it than a bunch of random Fediverse commentators.

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• vrighter@discuss.tchncs.de ⁨3⁩ ⁨days⁩ ago

  for starters, at the loads they’re running at, they have literally hundreds of gpu failures a day. How do you propose doing that in space?

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  • FaceDeer@fedia.io ⁨3⁩ ⁨days⁩ ago

    Include spares.

    I hope they're reading this thread and taking notes, they probably didn't think of that.

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    • vrighter@discuss.tchncs.de ⁨3⁩ ⁨days⁩ ago

      and the infrastructure and robotics to replace them, of course.

      Assuming 200 nvidia H100 failures a day (conservativo, reality is worse) that’s an extra ~340kg of weight you’d need to launch per day. Which is an extra 120 tons yearly.

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      • FaceDeer@fedia.io ⁨3⁩ ⁨days⁩ ago

        So, one Starship launch per year. Doesn't sound like a problem.

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