Unable to install dependencies

[piyush-bagad]

On running conda env create -f environment.yml, I am getting the following error:

Collecting package metadata: done
Solving environment: failed

ResolvePackageNotFound:
  - pytorch3d=0.2.0

I tried with pip but that throws up error on this line from pytorch3d import _C.

[ranahanocka]

Hi @piyush-bagad ,

It seems you need update the conda package manager (which is a good idea in general).

I think if you run this
conda update -c defaults conda

it will solve your problem. In general, you can check the version with conda -V. I am using conda 4.8.3.

[piyush-bagad]

Thanks @ranahanocka for the response. I updated to version 4.8.3

However, the problem still is not solved.

Collecting package metadata (repodata.json): done
Solving environment: failed

ResolvePackageNotFound:
  - pytorch3d=0.2.0

=>  point2mesh (master) $ conda -V
conda 4.8.3

[piyush-bagad]

I tried using pip but get this error:

(sample) =>  point2mesh (master) $ python
Python 3.7.7 (default, Mar 10 2020, 15:43:03)
[Clang 11.0.0 (clang-1100.0.33.17)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pytorch3d
>>> from pytorch3d import _C
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: dlopen(/Users/piyushbagad/virtual_environments/sample/lib/python3.7/site-packages/pytorch3d/_C.cpython-37m-darwin.so, 2): Library not loaded: @rpath/libc10.dylib
  Referenced from: /Users/piyushbagad/virtual_environments/sample/lib/python3.7/site-packages/pytorch3d/_C.cpython-37m-darwin.so
  Reason: image not found
>>> import torch
>>> from pytorch3d import _C
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: dlopen(/Users/piyushbagad/virtual_environments/sample/lib/python3.7/site-packages/pytorch3d/_C.cpython-37m-darwin.so, 2): Library not loaded: @rpath/libtorch_cpu.dylib
  Referenced from: /Users/piyushbagad/virtual_environments/sample/lib/python3.7/site-packages/pytorch3d/_C.cpython-37m-darwin.so
  Reason: image not found
>>>

[piyush-bagad]

I think there is some problem with pytorch3d==0.2.0. I am getting the same issue with conda environment

(pytorch3d) =>  point2mesh (master) $ python
Python 3.8.3 (default, May 19 2020, 13:54:14)
[Clang 10.0.0 ] :: Anaconda, Inc. on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pytorch3d
>>> from pytorch3d import _C
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: dlopen(/usr/local/anaconda3/envs/pytorch3d/lib/python3.8/site-packages/pytorch3d/_C.cpython-38-darwin.so, 2): Library not loaded: @rpath/libc10.dylib
  Referenced from: /usr/local/anaconda3/envs/pytorch3d/lib/python3.8/site-packages/pytorch3d/_C.cpython-38-darwin.so
  Reason: image not found
>>>

[ranahanocka]

Hi @piyush-bagad ,

So it seems you are using a mac, which according to the pytorch3d installation instructions should be done with pip.

Unfortunately, I don't have a mac so I can't reproduce your issue. But there is a mention of this issue in PyTorch 3D with some potential work arounds. If the issue persists, maybe you can open an issue in PyTorch3D.

[pocaha]

Dear @ranahanocka,

first and foremost, thank you very much for the code and congrats for the interesting work.
I am using windows and have the same problems as @piyush-bagad. I updated conda many times. I think it is a problem with PyTorch3D as you said...

[ranahanocka]

Hi @pocaha (and @piyush-bagad ),

I think it may be an issue with pytorch e.g.,. Maybe you can try installing the nightly version .

With conda : conda install -c pytorch pytorch-nightly

with pip (for macos, without cuda support):
pip install --pre torch torchvision -f https://download.pytorch.org/whl/nightly/cpu/torch_nightly.html

(reference)

[jrmh96]

For anyone still struggling w. this on MacOS, I am on Big Sur and got it to work by using python venv and using following versions:
torch 1.5.0
torchvision 0.5.0
pytorch3d 0.2.0