Question about install HIP to run on nvidia gpu

[huccpp]

I try to install HIP to run on nvidia gpu.
I looked at the instruction here:
https://rocm.docs.amd.com/projects/HIP/en/latest/install/install.html
I am on ubuntu 20.04. Earlier I have installed nvidia hpc sdk,
but the path of cuda it contains is not at /usr/local/cuda as written (it is at /opt/nvidia/.../cuda).
How to specify the path for the apt install?
And in this case, do I need to do the step
sudo apt-get install ubuntu-drivers-common && sudo ubuntu-drivers autoinstall
sudo reboot
?
Thanks a lot.

[harkgill-amd]

Hi @huccpp, I believe your current installation at /opt/nvidia is due to cuda being installed from the Ubuntu repositories. If you install the toolkit from the official website, the installation should be done under /usr/local.

[huccpp]

Hello @harkgill-amd,
Thanks for your reply. Earlier I installed the nvidia hpc sdk from
https://developer.nvidia.com/hpc-sdk-downloads
which includes things in cuda toolkits, but inside /opt/nvidia/ .
The problem is that I wonder whether it is possible to install HIP without installing cuda toolkits as its contents are already in my nvidia hpc sdk installation (also to avoid possible conflicts).
Thanks.
huccpp

[harkgill-amd]

I know of users working around the official cuda toolkit dependency by adding a | nvidia-cuda-toolkit (>= 7.5) in the hip-runtime-nvidia .deb file, see #820 (comment). Please note that this is not officially supported and may cause errors for dependencies that look for the cuda installation at /usr/local/cuda.

Not sure if the installation from the HPC SDK link satisfies either of these package requirements but it would be worth giving a try. If you could also share any errors encountered during the installation, that would be helpful in further investigating.

EDIT: You can also set the default CUDA installation path with the CUDA_PATH environment variable (ref).

[huccpp]

Thanks a lot, @harkgill-amd. I eventually installed it successfully.
huccpp

[harkgill-amd]

No problem, happy to hear it's working on your end. Will close out this issue.