[almostgotcaught]

Because it's slow duh

[georgehotz]

This sounds like prejudice. Have you benchmarked it?

[almostgotcaught]

Yes I literally duplicated your approach for my driver stack last week and surprise surprise the FFI overhead into libc is too high.

[georgehotz]

FFI? This isn't how GPUs work...they are MMIO (mostly)

Those drivers are faster than anything else when used to run fixed command queues (what neural network runs are)