SpaceX completed its 50th Starlink launch of 2026 today. With this mission, SpaceX has deployed 1,375 Starlink satellites so far this year, and another Starlink launch is scheduled for later tonight.
(photo below is real)
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.