use venv, Pytorch not found. Please install pytorch first.

[vdfngt]

i use venv， torch is installed，error

  × Getting requirements to build wheel did not run successfully.
  │ exit code: 1
  ╰─> [26 lines of output]
      Traceback (most recent call last):
        File "<string>", line 52, in <module>
      ModuleNotFoundError: No module named 'torch'
      
      During handling of the above exception, another exception occurred:
      
      Traceback (most recent call last):
        File "/home/featurize/work/myenv/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 353, in <module>
          main()
        File "/home/featurize/work/myenv/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 335, in main
          json_out['return_val'] = hook(**hook_input['kwargs'])
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/home/featurize/work/myenv/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 118, in get_requires_for_build_wheel
          return hook(config_settings)
                 ^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-xpxm1xdf/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 331, in get_requires_for_build_wheel
          return self._get_build_requires(config_settings, requirements=[])
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-xpxm1xdf/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 301, in _get_build_requires
          self.run_setup()
        File "/tmp/pip-build-env-xpxm1xdf/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 512, in run_setup
          super().run_setup(setup_script=setup_script)
        File "/tmp/pip-build-env-xpxm1xdf/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 317, in run_setup
          exec(code, locals())
        File "<string>", line 54, in <module>
      ImportError: Pytorch not found. Please install pytorch first.
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

i don't use venv，no this problem

[kubelvla]

I ran to the same problem, chatGPT answer:

Yeah, so torch is clearly installed in the same venv, but MinkowskiEngine fails because pip is building it in isolation by default.

When pip builds with PEP 517 isolation, it creates a temporary clean environment that only contains the declared build dependencies (from pyproject.toml) — PyTorch isn’t declared there, so the temporary environment doesn’t see it, and the build crashes at:

ImportError: Pytorch not found. Please install pytorch first.

Fix: build without isolation so it sees your installed torch

export MAX_JOBS=4 export BLAS=openblas pip install MinkowskiEngine==0.5.4 --no-deps -v --no-build-isolation

That tells pip to run the build using your current environment (with torch already installed).

[heartInsert]

Did you solve it ?

[vdfngt]

没有呀

[heartInsert]

@vdfngt 我人麻了，我需要跑这个，那我怎么弄，我G了

[vdfngt]

不使用venv

[heartInsert]

我用的conda，报同样的错误

[vdfngt]

你在跑什么模型吗

[heartInsert]

是的，一个通过点云预测物体最接抓取位姿的模型

[kubelvla]

Hi, I gave up on installing it as a python package through pip or conda, it is just impossible. If you want minkowski on modern Ubuntu and cuda 12, then make a fresh venv for it and follow these steps (they are my notes for my colleague how to build it from source):

pip install torch==2.4.0 torchvision==0.19.0 torchaudio==2.4.0 --index-url https://download.pytorch.org/whl/cu121

pip install --no-cache-dir --extra-index-url=https://pypi.nvidia.com cuml-cu12

git clone https://github.com/CiSong10/MinkowskiEngine.git

cd MinkowskiEngine/

git checkout cuda12-installation

python setup.py install --blas=openblas

I needed it for the Digiforests dataset, so I had a few more steps after that:

git clone https://github.com/PRBonn/digiforests.git
pip install open3d
{fix the package dep to open3d}:  "open3d>=0.18",
pip install -e .

But I think Minkowski did not depend on these final steps.