[Question] How does the GPU know the reward function?

[fmhall]

I've been playing around with the repo and I'm a bit confused with the GPU code.

Here's my confusion:

if you set const ZERO_BYTE: u8 = 0xff; for the sake of demonstration, the CPU code will now search for addresses that start with 0xff....

However, the GPU code continues to search for addresses with leading zeros. Why is this?

Thanks in advance. I'm a noob when it comes to working with the GPU.