Undefined symbol: _ZN5torch3jit17parseSchemaOrNameERKSs

📚 Installation

Environment

• OS: Ubuntu 18.04
• Python version: 3.6.9
• PyTorch version: 1.4.0
• CUDA/cuDNN version: 10.0
• GCC version: 7.4
• How did you try to install PyTorch Geometric and its extensions (pip, source): pip
• Any other relevant information: I have been using this library for a long time. I am quite surprised by this sudden error, even after couple of reinstalls.

Checklist

• I followed the installation guide.
• I cannot find my error message in the FAQ.
• I set up CUDA correctly and can compile CUDA code via nvcc.
• I have cloned the repository and tried a manual installation from source.
• I do have multiple CUDA versions on my machine.
• I checked if the official extension example runs on my machine.
• The offical extension example runs on my machine.

Additional context

Error log while importing:

>>> import torch
>>> import torch_scatter
Traceback (most recent call last):
  File "/home/pranav/.local/lib/python3.6/site-packages/torch_scatter/__init__.py", line 13, in <module>
    library, [osp.dirname(__file__)]).origin)
  File "/usr/lib/python3/dist-packages/torch/_ops.py", line 106, in load_library
    ctypes.CDLL(path)
  File "/usr/lib/python3.6/ctypes/__init__.py", line 348, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: /home/pranav/.local/lib/python3.6/site-packages/torch_scatter/_version.so: undefined symbol: _ZN5torch3jit17parseSchemaOrNameERKSs

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/pranav/.local/lib/python3.6/site-packages/torch_scatter/__init__.py", line 21, in <module>
    raise OSError(e)
OSError: /home/pranav/.local/lib/python3.6/site-packages/torch_scatter/_version.so: undefined symbol: _ZN5torch3jit17parseSchemaOrNameERKSs
>>> import torch_sparse
Traceback (most recent call last):
  File "/home/pranav/.local/lib/python3.6/site-packages/torch_sparse/__init__.py", line 14, in <module>
    library, [osp.dirname(__file__)]).origin)
  File "/usr/lib/python3/dist-packages/torch/_ops.py", line 106, in load_library
    ctypes.CDLL(path)
  File "/usr/lib/python3.6/ctypes/__init__.py", line 348, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: /home/pranav/.local/lib/python3.6/site-packages/torch_sparse/_version.so: undefined symbol: _ZN5torch3jit17parseSchemaOrNameERKSs

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/pranav/.local/lib/python3.6/site-packages/torch_sparse/__init__.py", line 22, in <module>
    raise OSError(e)
OSError: /home/pranav/.local/lib/python3.6/site-packages/torch_sparse/_version.so: undefined symbol: _ZN5torch3jit17parseSchemaOrNameERKSs

[dongwei156]

I have solved this problem. The reason is that: do not install pytorch via anaconda-navigator ! It will install both cpu and gpu versions, even though you only select the pytorch. You can download the specific version of the pytorch from:

https://download.pytorch.org/whl/torch_stable.html,

and this problem will be solved. All dependent packages are listed: cu101/torch-1.4.0-cp38-cp38-linux_x86_64.whl cu101/torchvision-0.5.0-cp38-cp38-linux_x86_64.whl torch_cluster-1.5.3+cu101-cp38-cp38-linux_x86_64.whl torch_scatter-2.0.4+cu101-cp38-cp38-linux_x86_64.whl torch_sparse-0.6.1+cu101-cp38-cp38-linux_x86_64.whl torch_spline_conv-1.2.0+cu101-cp38-cp38-linux_x86_64.whl

The author is right! Multi-versions of pytorch (CPU and GPU) result in this problem!

[rusty1s]

This error is usually explained by using multiple PyTorch or multiple CUDA versions, and the extensions get compiled with the one that you are not using within PyTorch. BTW, you can now also try out our Python binaries for a smoother installation.