Problem in running your code

[kushal-chakraborty]

I tried running your code in my system. But I ran into some error when executing the command python example.py as:
Traceback (most recent call last): File "example.py", line 1, in <module> import torch File "/home/pg2017/cse/17071016/.conda/envs/myenv/lib/python3.7/site-packages/torch/__init__.py", line 102, in <module> from torch._C import * ImportError: /home/pg2017/cse/17071016/.conda/envs/myenv/lib/python3.7/site-packages/torch/lib/libtorch.so.1: undefined symbol: nvrtcGetProgramLogSize

Please address this issue. Waiting for a reply.

[djongpo]

I also encountered the same problem when I installed cupy 5.1.0 and pytorch 1.0.1 in the environment pytorch-extensions and then tried to run the command python example.py. I think there is some problem with torch installation. For that, I used the command,
conda install pytorch==1.0.1 and I have cuda 10.0 installed.

I see that you have listed all dependencies in environment.yml. When I installed all dependencies using the command, conda env update --file environment.yml and then tried running the command python example.py it gives the error:
Traceback (most recent call last): File "/home/pg2017/cse/17071016/.conda/envs/pytorch-extensions/lib/python3.7/site-packages/cupy/__init__.py", line 11, in <module> from cupy import core # NOQA File "/home/pg2017/cse/17071016/.conda/envs/pytorch-extensions/lib/python3.7/site-packages/cupy/core/__init__.py", line 1, in <module> from cupy.core import core # NOQA File "cupy/core/core.pyx", line 1, in init cupy.core.core File "/home/pg2017/cse/17071016/.conda/envs/pytorch-extensions/lib/python3.7/site-packages/cupy/cuda/__init__.py", line 4, in <module> from cupy.cuda import compiler # NOQA File "/home/pg2017/cse/17071016/.conda/envs/pytorch-extensions/lib/python3.7/site-packages/cupy/cuda/compiler.py", line 12, in <module> from cupy.cuda import function File "cupy/cuda/function.pyx", line 1, in init cupy.cuda.function ImportError: libcuda.so.1: cannot open shared object file: No such file or directory

Traceback (most recent call last): File "example.py", line 3, in <module> from roi_pooling.functions.roi_pooling import roi_pooling_2d File "/home/pg2017/cse/17071016/roi_pooling/roi_pooling/functions/roi_pooling.py", line 29, in <module> from ..utils import Dtype, Stream, load_kernel File "/home/pg2017/cse/17071016/roi_pooling/roi_pooling/utils.py", line 17, in <module> import cupy File "/home/pg2017/cse/17071016/.conda/envs/pytorch-extensions/lib/python3.7/site-packages/cupy/__init__.py", line 32, in <module> six.reraise(ImportError, ImportError(msg), exc_info[2]) File "/home/pg2017/cse/17071016/.conda/envs/pytorch-extensions/lib/python3.7/site-packages/six.py", line 692, in reraise raise value.with_traceback(tb) File "/home/pg2017/cse/17071016/.conda/envs/pytorch-extensions/lib/python3.7/site-packages/cupy/__init__.py", line 11, in <module> from cupy import core # NOQA File "/home/pg2017/cse/17071016/.conda/envs/pytorch-extensions/lib/python3.7/site-packages/cupy/core/__init__.py", line 1, in <module> from cupy.core import core # NOQA File "cupy/core/core.pyx", line 1, in init cupy.core.core File "/home/pg2017/cse/17071016/.conda/envs/pytorch-extensions/lib/python3.7/site-packages/cupy/cuda/__init__.py", line 4, in <module> from cupy.cuda import compiler # NOQA File "/home/pg2017/cse/17071016/.conda/envs/pytorch-extensions/lib/python3.7/site-packages/cupy/cuda/compiler.py", line 12, in <module> from cupy.cuda import function File "cupy/cuda/function.pyx", line 1, in init cupy.cuda.function ImportError: CuPy is not correctly installed.

If you are using wheel distribution (cupy-cudaXX), make sure that the version of CuPy you installed matches with the version of CUDA on your host.
Also, confirm that only one CuPy package is installed:
$ pip freeze

original error: libcuda.so.1: cannot open shared object file: No such file or directory

I checked with the command pip freeze that only one version of cupy exists.

What is the problem with libcuda.so? As said by @kushal-chakraborty please address this problem

[escorciav]

Thanks for your interest in our work.

1. Were you able to use it in colab? Please try that first.
2. Please detail the steps used to reproduce the problem. I will try to give guidance.

Please be polite in the wait you request for help.