ImportError: dlopen(): Symbol not found after installation about pytorch3d HOT 15 CLOSED

@sinanmut your issue is now resolved. @semihcanturk we are making some changes so the library can be built for cpu only. We will try to get this fixed ASAP. In the meantime please see #29 for instructions on how to run the tutorials in a collab environment.

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I don't have any errors any more, thanks a lot!

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oh, my apologies - I think the issue arose from the cloned repo (where the tutorials are) rather than the installed pytorch3d package. It seems to be resolved now that I ran python3 setup.py build develop on the repository root.

I have, however, encountered a new one in RuntimeError: Not implemented on the CPU. Will file it under a separate issue though as it is not directly related to the one in the title.

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@semihcanturk this looks like an error with building CUDA. Can you share more details about the environment you are using e.g. CUDA version?

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I was trying to get it working on CPU only, don't have CUDA available unfortunately. INSTALL.md mentions some components have CPU implementations in C++/Pytorch as well, but I assume this particular tutorial requires GPU implementations in this case.

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See also #29 (which is a dupe of this issue but with a different title and seen running in the tutorial colab notebooks context)

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Hi,
I have cuda 10.0 and t trying to build the package with "python setup.py install --user". I am getting the save error for "from pytorch3d.structures import Meshes".

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@sinanmut @REscanDon @semihcanturk I am looking into this and will report back soon.

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@semihcanturk a fix has been landed in master so please try again with the latest version of the repo. If you still experience problems feel free to reopen this issue.

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I'm afraid the issue persists on my end. Reinstalled the latest master via pip3 install git+https://github.com/facebookresearch/pytorch3d.git, and the error is very much the same, except the last section:

ImportError: dlopen(/Users/semo/PycharmProjects/pytorch3d/pytorch3d/_C.cpython-37m-darwin.so, 2): Symbol not found: __Z23RasterizeMeshesFineCudaRKN2at6TensorES2_ifiib
  Referenced from: /Users/semo/PycharmProjects/pytorch3d/pytorch3d/_C.cpython-37m-darwin.so
  Expected in: flat namespace
 in /Users/semo/PycharmProjects/pytorch3d/pytorch3d/_C.cpython-37m-darwin.so

has been replaced by this simpler message:
ImportError: cannot import name '_C' from 'pytorch3d' (/Users/semo/PycharmProjects/pytorch3d/pytorch3d/__init__.py)

Can you reopen the issue? Thanks!

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@semihcanturk can you try doing import torch before importing pytorch3d?

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That is how it is right now. I also tried moving import torch to a cell above the one that imports pytorch3d and ran the cells sequentially, but neither case worked.

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@semihcanturk it seems PyTorch3D was not installed properly. Did you try pip uninstall and reinstalling?

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yup. tried uninstall/installing both the default pip install pytorch3d (v 0.0.1) and the latest master via pip install git+https://github.com/facebookresearch/pytorch3d.git (v 0.1), but the issue remains.

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ok great! I will close this issue!

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