ImportError: No module named _corr

[ZeeshanNadir]

After successfully building the external correlation package for pytorch, when I run the PWC-Net I get the following error:
File "./correlation_package/_ext/corr/__init__.py", line 3, in
from ._corr import lib as _lib, ffi as _ffi
ImportError: No module named _corr

Looking inside the folders, I don't see any module "_corr". Can you please help me resolve this.

Python version 2.7
PyTorch 0.2

[wyhcqq]

I also meet this problem， have you solve that？

[wyhcqq]

if you solved this, tell me, please

[HeliosZhao]

I meet the same problem, and have no idea how to solve it

[jeffbaena]

Hi all,
I also run into the same problem and at the end I went for this version of pwc (PWC-net_ROB) which uses cupy and weighted ported from caffe https://github.com/sniklaus/pytorch-pwc

For the correlation layer another hint might be using the implementation of https://github.com/ClementPinard/FlowNetPytorch , I believe it is well made and in the repository there are also some links to the original nvidia impelementation. You have to skim a bit through the rep to find everything, but I have used it and it is good.

I hope this helps,
Stefano