installing monai in develop mode doesn't build with cuda

[sarbabi]

after installing pytorch in a virtual env and torch.cuda.is_available() is True.

$BUILD_MONAI=1 python setup.py develop

starts with

(venv_monai) [saeed@isigpu2]$ BUILD_MONAI=1 python setup.py develop
setup.py with torch 1.12.0+cu116
BUILD_MONAI_CPP=True, BUILD_MONAI_CUDA=False, TORCH_VERSION=11200.

I checked in the setup.py, seems like the reason is $CUDA_HOME environment variable is empty, configuring address in CUDA_HOME, still returns another error: no such folder in $CUDA_HOME/bin/nvcc.

I can't have sudo access to install nvcc, but I guess it should not be necessary, Or I'm missing something?

Any help appreciated.
Best,
Saeed

[wyli]

perhaps the change mentioned in this ticket would enable forced install? #4621

[sarbabi]

not really, in setup.py this line is:
BUILD_CUDA = (CUDA_HOME is not None) if torch.cuda.is_available() else FORCE_CUDA

so in my setup since torch.cuda.is_available() is True, gives value False to BUILD_CUDA (since my CUDA_HOME is None)

I tried to find what should I provide as CUDA_HOME and tried some addresses with no success, since it tries to find some file in $CUDA_HOME/bin/nvcc.

[wyli]

ok, nvcc is needed... I think you can install it without sudo, for example: conda install cudatoolkit-dev -c conda-forge

[sarbabi]

Thanks, could install nvcc without root access using the method in this link:
pyg-team/pytorch_geometric#392
Best, Saeed