Why GPU and NPU give different results?

[chn-lee-yumi]

I fixed the random seed, and use GPU and NPU to generate an image separately.

This is from GPU:

This is from NPU:

As I know, GPU and NPU both use FP16 for inference. I think they should have the same result. Why they are different?

[atiorh]

This is expected (Also check out the visual in this README section). TL;DR: Kernel numerics are different.

[chn-lee-yumi]

Kernel numerics are different

@atiorh Could you explain this? Does it mean the weights will be slightly changed when loaded to NPU?