I created a virtualenv with python 3.10 and installed open3d and PyTorch according to the instructions on open3d-ml webpage: Open3d-ML but when I tested it with import open3d.ml.torch I get the error:
Exception: Open3D was not built with PyTorch support!
Steps to reproduce
python3.10 -m venv .venv
source .venv/bin/activate
pip install --upgrade pip
pip install open3d
pip install torch torchvision torchaudio
Error
% python -c "import open3d.ml.torch as ml3d"
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Users/xx/.venv/lib/python3.10/site-packages/open3d/ml/torch/__init__.py", line 34, in <module>
raise Exception('Open3D was not built with PyTorch support!')
Exception: Open3D was not built with PyTorch support!
Environment:
% python3 --version
Python 3.10.9
% pip freeze
open3d==0.16.1
torch==1.13.1
torchaudio==0.13.1
torchvision==0.14.1
OS
macOS 12.6
Kernel Version: Darwin 21.6.0
I also checked below similar issues but they don't have answers:
https://github.com/isl-org/Open3D/discussions/5849
https://github.com/isl-org/Open3D-ML/issues/557
According to this issue 5849 the problem can't be related only to MacOs because, in a docker with Ubuntu20.04, there is a similar error.
Does anyone know how we can tackle this?
Finally, I decided to build Open3D from the source for Mac M1. I followed almost the official open3d page and thanks to this medium in one of the replies.
For the OS environment see the main question.
conda create --name open3d-ml-build python==3.10
conda activate open3d-ml-build
# install pytorch from pytorch.org
conda install pytorch torchvision torchaudio -c pytorch
# now clone open3d in a desired location
git clone --branch v0.16.1 git@github.com:isl-org/Open3D.git ./foo/open3d-0.16-build
cd open3d-0.16-build
mkdir build && cd build
git clone git@github.com:isl-org/Open3D-ML.git
Now make sure you are in the activeted conda env.
(takes very long and a lot of memory)
Note on Mac M1 you don't have Cuda but Metal Performance Shaders (MPS) so I made CUDA Flags OFF in the cmake configuration.
which python3
>> /Users/XX/miniconda3/envs/open3d-ml-build/bin/python3
# in the build direcotry
cmake -DBUILD_CUDA_MODULE=OFF -DGLIBCXX_USE_CXX11_ABI=OFF \
-DBUILD_PYTORCH_OPS=ON -DBUILD_CUDA_MODULE=OFF \
-DBUNDLE_OPEN3D_ML=ON -DOPEN3D_ML_ROOT=Open3D-ML \
-DBUILD_JUPYTER_EXTENSION:BOOL=OFF \
-DPython3_ROOT=/Users/XX/miniconda3/envs/open3d-ml-build/bin/python3 ..
make -j$(sysctl -n hw.physicalcpu) [verbose=1]
If it fails, try it again or run it with verbose and look for fatal error.
# Install pip package in the current python environment
make install-pip-package
# if error: Module Not found yapf
pip install yapf
# Create Python package in build/lib
make python-package
# Create pip wheel in build/lib
# This creates a .whl file that you can install manually.
make pip-package
Again in the activated conda environment
# if not installed
pip install tensorboard
python3 -c "import open3d; import open3d.ml.torch"
pip freeze | grep torch
torch==1.13.1
torchaudio==0.13.1
torchvision==0.14.1
If you don't get any errors you should be good to go.