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With just a quick look into some basic physics and logistics of putting a data center in space, the idea becomes comical. First, you have to put massive amounts of hardware, cooling systems, and power into space. Then you have to completely reengineer the data center for space. Then...

29,203 次观看 • 3 天前 •via X (Twitter)

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This is the next big plan for SpaceX: AI Data Centers in Space. • To achieve even a small fraction of a Kardashev Type II civilization (harnessing the full energy of the Sun), AI compute will require orders of magnitude more energy than Earth can ever provide. • Earth only intercepts about 1–2 billionths of the Sun’s total energy output. • Massive-scale AI (e.g., a million times more energy than Earth could produce) can only be powered by capturing far more solar energy in space. • Space-based solar-powered AI satellites/compute clusters are therefore inevitable. • In space, sunlight is continuous (no night, no clouds, no atmosphere), so no batteries are needed. • Solar panels in space can be extremely lightweight and cheap (no glass, no storm-proof framing required). • Cooling in space is dramatically easier and simpler: just radiate heat directly into the cold vacuum — no water, no fans, no liquids, no massive cooling infrastructure. • Most of the mass/volume of current supercomputer racks (e.g., GB300) is cooling hardware; in space that largely disappears. • The cost-effectiveness of electricity and compute in space will soon be overwhelmingly better than on Earth. • Elon’s Prediction: within ~5 years (by ~2030), the lowest-cost way to run large-scale AI will be solar-powered satellites in space. • A terawatt/year of AI compute is essentially impossible on Earth with any realistic build-out of power plants. • Scaling both power generation and cooling on Earth at the required rate is physically and politically unfeasible.

Nic Cruz Patane

49,019 次观看 • 7 个月前

Elon Musk reveals why he believes the cheapest place to put AI will be space within 36 months "The availability of energy is the issue. Everywhere outside of China, electrical output is more or less flat. The output of chips is growing exponentially, but the output of electricity is flat" "How are you going to turn the chips on? Magical power sources? Magical electricity fairies?" "Space is really a regulatory play. It's harder to build on land than it is in space. It's harder to scale on the ground than it is to scale in space" "It's always sunny in space. You don't have a day-night cycle, seasonality, clouds, or an atmosphere. The atmosphere alone results in about a 30% loss of energy" "Any given solar panel can do about five times more power in space than on the ground. You also avoid the cost of having batteries to carry you through the night" "My prediction is that it will be by far the cheapest place to put AI. It will be space in 36 months or less. Maybe 30 months" "The only place you can really scale is space. Once you start thinking in terms of what percentage of the Sun's power you are harnessing, you realize you have to go to space" "Solar cells are already farcically cheap. In China they're around 25-30 cents a watt. Now put them in space, and it's not five times cheaper, it's 10 times cheaper because you don't need any batteries" "The moment your cost of access to space becomes low, by far the cheapest and most scalable way to generate tokens is space. It's not even close" "Those who have lived in software land don't realize they're about to have a hard lesson in hardware. It's actually very difficult to build power plants"

Jaynit

8,359,348 次观看 • 1 个月前