name 'corr_sampler' is not defined

[rishabhpahuja]

To implement the faster version of RAFT, if I change the default value of --corr_implementation to reg_cuda, I get the error of "name 'corr_sampler' is not defined".

[lahavlipson]

Were you able to successfully run python setup.py install under sampler/?

[HaiLiExp]

I met a compatability issue
The detected CUDA version (11.0) mismatches the version that was used to compile
PyTorch (11.7). Please make sure to use the same CUDA versions.
Is it possible to get the a python version of this file please, so that it would be more version compatible?

[impact-x]

["reg", "alt", "reg_cuda", "alt_cuda"] Can you tell me what these options mean and their differences? Thank you！