> Can people please try and use their fucking brains for a second?

Have you considered that people smarter than you think it is plausible?

> Have you considered that people smarter than you think it is plausible?

I know many people smarter than me, plenty of them who have spent careers building data centers, and not one of them think this is plausible.

You should consider whether people smarter than the average investor are pulling a fast one.

Maybe we are talking about different things here?

I don't doubt spacex can fail at this.

I also don't doubt we are fairly close to making this plausible.

> plenty of them who have spent careers building data centers

Famously, plenty of people who have spent careers building rockets would swear that reusable rockets would absolutely never work.

>I also don't doubt we are fairly close to making this plausible.

Maybe you should doubt that. There's literally no reason to think this is plausible besides some hype merchants' say-so.

> some hype merchants

Excluding Spacex:

Nvidia, Google, China, European Commission, Blue Origin

And this being HN, a YC funded company has put a single GPU rack in space and demonstrated training a reasonable sized model on it.

But yeah, it's all hype, sure.

On the off chance you're sincere and not just heavily over indexed into Elon stocks:

It's trivial to understand why this is all hype if you pay attention to physics, as another commenter suggested earlier.

https://en.wikipedia.org/wiki/Stefan%E2%80%93Boltzmann_law

Assume you're radiating away the heat for a single B200 (~1kW), and the max radiator temp is 100C, you find A = ~3m^2.

So that's 3 square meters per GPU. Now if you take into account that the largest planar structure deployed into space is ~3k m^2 (https://investors.lockheedmartin.com/news-releases/news-rele...), you're looking at 1000 GPUs.

That's a single aisle in a terrestrial data center.

Cost to deploy on earth vs satellite is left as an exercise to the reader.

You are missing one important thing here.

You do not radiate all the heat away from a GPU, a modern GPU can run pretty hot. Also look up how this is getting better for the next generation of GPUs.

Maybe repeat your calculation with updated assumptions?

But even if you were completely right, your argument is that we can't do this tomorrow, yes I agree. Typical technology development cycles are about 5-10 years.

> You do not radiate all the heat away from a GPU, a modern GPU can run pretty hot.

Fascinating. Tell me more.

Where does the heat energy that isn't radiated away go?

>You do not radiate all the heat away from a GPU, a modern GPU can run pretty hot.

LOL. If you don't radiate the heat the spacecraft just gets indefinitely hotter (until it glows and the heat is forcibly irradiated). It's space, there's no fluid to provide convection.

Have you considered that people smarter than you are scamming you?

Yep, definitely being scammed by not dismissing things outside my area of expertise out of hand.

I wish I had your confidence about everything!

I am yet to see any actual numbers showing how the economics of this would work or compare to the cost of building traditional data centers.

Please come back to reality.

> Yep, definitely being scammed by not dismissing things outside my area of expertise out of hand. I wish I had your confidence about everything!

Instead you put your confidence in Elon, who has zero expertise in this area?

> Instead you put your confidence in Elon

No, I put confidence my ability to do a web search, pretty rare skill nowadays ;)

You'll see that none of these are Elon/spacex, hopefully?

https://medium.com/@cognidownunder/google-just-announced-the...

https://www.ycombinator.com/companies/starcloud

https://www.informationweek.com/it-infrastructure/lunar-data...

https://ascend-horizon.eu/

https://www.axiomspace.com/orbital-data-center