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xAI joins SpaceX

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Re: xAI joins SpaceX

#91
The whole universe was supposed to be turned into paperclips, now it is being turned into graphics cards to produce images of barely legal girls on X.

And Musk keeps grifting about Kardashev 2 civilizations while his rockets do not even reach the moon.

If SpaceX goes public, that will rescue his xAi shares. I wonder how he will rescue his Tesla shares.

Re: xAI joins SpaceX

#94

Well surely this acquisition is above board. Nothing funny going on here, just good old business as usual.

> Well surely this acquisition is above board. What makes you think it isn’t?

Musk has a history of having one of his more successful companies buying one of his less successful companies. xAI bought X, and Tesla bought SolarCity

Re: xAI joins SpaceX

#95
So they use a valid and valuable company to hide a giant dumpster fire company. To add to that, their best argument is "AI in space", which has some real "solar roadways" energy to it. I honestly don't know how any SpaceX shareholder could approve this.

Re: xAI joins SpaceX

#96

SpaceX is too big to fail. It's important for national security. I wonder if Elon wants to tangle all his businesses into SpaceX so they are all kept afloat by SpaceX's importance.

Starship has a large number of critical milestones coming: Can it land and quickly reuse the upper stage? If not, it can't make refueling flights without building a dozen or two starships. Can it carry the full specified payload? If not, it can't even try to refuel in orbit. If it can't refuel in orbit, it can't go beyond earth orbit. Etc.

Everything has to go right or it will be irrelevant before it works.

Re: xAI joins SpaceX

#97

I still don't understand the "data center in space" narrative. How are they going to solve the cooling issue?

Cooling a datacenter in space isn't really any harder than cooling a starlink in space, the ratio of solar panels to radiating area will have to be about the same. There is nothing uniquely heat-producing about GPUs, ultimately almost all energy collected by a satellite's solar panels ends up as heat in the satellite. IMO the big problem is the lack of maintainability.

I think that it's not just about the ratio. To me the difference is that Starlink sattelites are fixed-scope, miniature satellites that perform a limited range of tasks. When you talk about GPUs, though, your goal is maximizing the amount of compute you send up. Which means you need to push as many of these GPUs up there as possible, to the extent where you'd need huge megastructures with solar panels and radiators that would probably start pushing the limits of what in-space construction can do. Sure, the ratio would be the same, but what about the scale?

And you also need it to make sense not just from a maintenance standpoint, but from a financial one. In what world would launching what's equivalent to huge facilities that work perfectly fine on the ground make sense? What's the point? If we had a space elevator and nearly free space deployment, then yeah maybe, but how does this plan square with our current reality?

Oh, and don't forget about getting some good shielding for all those precise, cutting-edge processors.

Re: xAI joins SpaceX

#100

> The basic math is that launching a million tons per year of satellites generating 100 kW of compute power per ton would add 100 gigawatts of AI compute capacity annually, with no ongoing operational or maintenance needs. Ultimately, there is a path to launching 1 TW/year from Earth. > My estimate is that within 2 to 3 years, the lowest cost way to generate AI compute will be in space. This is so obviously false. Fo…

They'll just be decommissioned and burn up in space. nVidia will make space-grade GPUs on a 2-3 year cycle.
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