Difference between copy_ and _copy_from

C++
1

Hello,

I have added a new backend via PrivateUse1 dispatch key and I had registered copy_ to be registered but I notice that there is also a _copy_from I was wondering what the difference between these two ops are.

When I call .to(device) on without copy_ being registered I get an error even if _copy_from is registered.

2

@almeetb
‘https://github.com/pytorch/pytorch/blob/3c66a3795a58a3866daf6dd9b26d67eded4d5982/aten/src/ATen/native/Copy.cpp#L106’
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