SpaceX has almost finished writing V1.0 of an in-house AI training stack in C that exact-maps to 220k GB300s with 800G NICs, making heavy use of pipeline parallelism and getting as close to bare metal as possible.
The potential speed improvement vs JAX for large training runs is over an order of magnitude.
The hydraulic pin holding the tower arm in place did not retract.
If that can be fixed tonight, there will be another launch attempt tomorrow at 5:30 CT.
It’s hard to understand what the other 39% are thinking.
Once you drive a Tesla, it’s like driving an all-seeing sensor with a super computer behind the scenes doing all the decision making, driving and navigation. Also, you never have to go to a gas station.