Fix for [libtorch_cpu.so: undefined symbol: iJIT_NotifyEvent] running setup.py

[nistream]

Symption

The setup command crashed with the following output:

(hybrik) {username}:~/HybrIK$ python setup.py develop
Traceback (most recent call last):
  File "setup.py", line 6, in <module>
    from torch.utils.cpp_extension import BuildExtension, CUDAExtension
  File "/home/{username}/anaconda3/envs/hybrik/lib/python3.8/site-packages/torch/__init__.py", line 197, in <module>
    from torch._C import *  # noqa: F403
ImportError: /home/{username}/anaconda3/envs/hybrik/lib/python3.8/site-packages/torch/lib/libtorch_cpu.so: undefined symbol: iJIT_NotifyEvent

Cause (Suspected)

The installed PyTorch version (or the conda channel it came from) is no longer compatible with your current system environment.

Solution

1. Remove the broken environment:

   conda deactivate
   conda env remove -n hybrik

2. Rerun the installation steps, REPLACING this:

   conda install pytorch==1.9.1 torchvision==0.10.1 -c pytorch

   WITH this:

   pip install torch==1.9.1+cu111 torchvision==0.10.1+cu111 -f https://download.pytorch.org/whl/torch_stable.html
   

3. If encounter the following error:

   error: Couldn't find a setup script in /tmp/easy_install-8uovd3gj/scipy-1.16.0rc1.tar.gz

   Just run

   pip install scipy

   Then rerun:

   python setup.py develop

4. Everything should now work as expected.

Environment

• Ubuntu 22.04.5 LTS
• NVIDIA RTX 4090

[nistream]

See also #186