There's no doubt about Noam's abilities. But I read through that code, and struggle to see its 'magic' or 'alchemy'. Can you elaborate what you find especially good about that code? (You may assume GPU kernel programming knowledge on my end.)
Unrelated to the particular code above. There's a difference between writing code about or adjacent to a proven idea vs writing code in uncharted territory. I suspect that is what happened here. It's the same thing with say music and art. A lot of people today can play Chuck Berry.
To me the magic Noam moment was when he came to my team and said "that cluster has a bad node in it, but this other one doesn't" and we had to spend like a week tracking down a single bad processor out of thousands.