Just look at a car. Maybe half a square meter of “radiator” is enough to dissipate hundreds of kW of heat, because it can dump it into a convenient mass of fluid. That’s way more heat than the ISS’s radiators handle, and three orders of magnitude less area.
Or do a simple experiment at home. Light a match. Hold your finger near it. Then put your finger in the flame. How much faster did the heat transfer when you made contact? Enough to go from feeling mildly warm to causing injury.
its not exactly good advertisement for conductive or convective heat transfer if its really employing thermal radiation under the hood!
but do you want big tech to shit where you eat? or do you want them to go to the bathroom upstairs?
At some point I'm thinking the large resistance to the idea I am seeing in a forum populated with programmers is the salivation-inducing idea that all that datacenter hardware will eventually get sold for less and less, but if we launch them to space there won't be any cheap devalued datacenter hardware to put in their man-caves.
However, what do you reckon the energy balance is for launching the 1 GW datacenter components into space and assembling it?
The economics and energy balance is where I too am very skeptical, at least near term.
Quick back of envelope calculations gave me a payback time of about 10 years, so which is only a single order of magnitude off which can easily accumulate by lack of access to detailed plans.
I can not exclude they see something (or can charge themselves lower launch costs, etc.) that makes it entirely feasible, but also can't confirm its infeasible economically. For example I have no insight of what fraction of terrestrial datacenter establishment cost goes into various "frictions" like paying goverments and lawyers to gloss over all the details, paying permission taxes etc. I can see how space can become attractive in other ways.
Then again if you look at the energetic cost to do a training run, it seems MW facilities would suffice. So why do we read all the noise about restarting nuclear power plants or trying to secure new power plants strictly for AI? It certainly could make sense if governments are willing to throw top dollar at searching algorithmic / mathematical breakthroughs in cryptography. Even if the compute is overpriced, you could have a lot of LLM's reasoning in space to find the breakthroughs before strategic competitors do. Its a math and logic race unfolding before our eyes, and its getting next to no coverage.
The resistance to the idea is because it doesn’t make any sense. It makes everything more difficult and more expensive and there’s no benefit.
It's you who didn't answer my question :)
Would you prefer big tech to shit where we eat, or go to the bathroom upstairs?
The reason I'm talking about computers on the ground using the atmosphere for cooling is because that's how things are done right now and that's the obvious alternative to space-based computing.
Why does it matter what I prefer? I'd love to see all industry in space and Earth turned into a garden. I'm not talking about what I want. I'm talking about the economics. I'm asking why so many people are talking about putting data centers in space when doing so would be so much more difficult than putting data centers on Earth. If your argument is that it's more difficult but it's worth the extra effort so we don't "shit where we eat," great, but that's the first time I've ever seen that argument put forth. None of the actual players are making that case.