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Build issue: No module named _th_fft

See original GitHub issue

I’ve installed pytorch_fft from source using python setup.py install --prefix=/my/prefix. I’m getting an error:

import pytorch_fft
#Traceback (most recent call last):
#  File "<stdin>", line 1, in <module>
#  File "pytorch_fft/__init__.py", line 1, in <module>
#    from . import fft
#  File "pytorch_fft/fft/__init__.py", line 1, in <module>
#    from .fft import *
#  File "pytorch_fft/fft/fft.py", line 3, in <module>
#    from .._ext import th_fft
#  File "pytorch_fft/_ext/th_fft/__init__.py", line 3, in <module>
#    from ._th_fft import lib as _lib, ffi as _ffi
#ImportError: No module named _th_fft

It seems the installer is confused (note the strange /home/... directory structure):

pytorch_fft $ find build/
#build/
#build/lib.linux-x86_64-2.7
#build/lib.linux-x86_64-2.7/_th_fft.so
#build/lib.linux-x86_64-2.7/pytorch_fft
#build/lib.linux-x86_64-2.7/pytorch_fft/fft
#build/lib.linux-x86_64-2.7/pytorch_fft/fft/autograd.py
#build/lib.linux-x86_64-2.7/pytorch_fft/fft/__init__.py
#build/lib.linux-x86_64-2.7/pytorch_fft/fft/fft.py
#build/lib.linux-x86_64-2.7/pytorch_fft/__init__.py
#build/lib.linux-x86_64-2.7/pytorch_fft/_ext
#build/lib.linux-x86_64-2.7/pytorch_fft/_ext/__init__.py
#build/lib.linux-x86_64-2.7/pytorch_fft/_ext/th_fft
#build/lib.linux-x86_64-2.7/pytorch_fft/_ext/th_fft/__init__.py
#build/temp.linux-x86_64-2.7
#build/temp.linux-x86_64-2.7/_th_fft.c
#build/temp.linux-x86_64-2.7/build
#build/temp.linux-x86_64-2.7/build/temp.linux-x86_64-2.7
#build/temp.linux-x86_64-2.7/build/temp.linux-x86_64-2.7/_th_fft.o
#build/temp.linux-x86_64-2.7/home
#build/temp.linux-x86_64-2.7/home/mscho
#build/temp.linux-x86_64-2.7/home/mscho/vadim
#build/temp.linux-x86_64-2.7/home/mscho/vadim/pytorch_fft
#build/temp.linux-x86_64-2.7/home/mscho/vadim/pytorch_fft/pytorch_fft
#build/temp.linux-x86_64-2.7/home/mscho/vadim/pytorch_fft/pytorch_fft/src
#build/temp.linux-x86_64-2.7/home/mscho/vadim/pytorch_fft/pytorch_fft/src/th_fft_cuda.o
#build/bdist.linux-x86_64

Issue Analytics

State:
Created 6 years ago
Comments:8 (6 by maintainers)

Top GitHub Comments

1reaction

gdlgcommented, Apr 18, 2018

Hi @riceric22 I can reproduce the problem. It seems that the problem was introduced by the last commit 390b2c0a126dc5b942cccca8c8634b6ec213c72c. However to reproduce the problem, you need a clean version of the code with no leftover build files from a previously successful build. If you have successfully built the project with an older version, you won’t notice the problem.

To trigger the problem, either clone the repository fresh from Github or remove the build folders: rm build/ dist/ pytorch_fft.egg-info/ -Rf then run python setup.py install.

I think that 390b2c0a126dc5b942cccca8c8634b6ec213c72c is not the correct fix for #23 however it breaks the install for quite a few persons and it would be better to revert it.

0reactions

gdlgcommented, Apr 21, 2018

Thanks.