Hi all, I am trying to install lightning-gpu with mpi support under python3.10, and I have been having some trouble with it. I am following the instructions here: https://docs.pennylane.ai/projects/lightning/en/stable/lightning_gpu/installation.html When I run this command: CMAKE_ARGS="-DENABLE_M…

Hi @justin6626 , I’m not sure, I’m checking with the team so I’ll let you know what I hear from them. Alternatively you can create a Docker image with the following steps: FROM nvcr.io/nvidia/cuquantum-appliance:24.08-x86_64 as base ENV DEBIAN_FRONTEND=noninteractive ENV PATH=/usr/local/cuda/bin:…

Thank you very much! I will try that out and see if it works. I’m not very familiar with installing in editable mode. What would it do in this particular case?

Hi @justin6626 , With my instructions above you would not be installing with editable mode. Note that it doesn’t have the “-e” that you had in your original post. :smiley:

Sorry about that! I was actually wondering if not installing in editable mode would lead to any problems.

No, it shouldn’t lead to any problems. Regarding your original post I heard back from the team. The issue you were having might be rather about the pip version than Python version. What version are you using at the moment? --config-settings is an option of pip, introduced with Changelog - pip doc…

It looks like the pip version was the problem. Thank you very much for your help!

It looks like I spoke to soon. When I run sudo pip install -e . --config-settings editable_mode=compat -vv I get the following error: -- Configuring incomplete, errors occurred! Traceback (most recent call last): File "/tmp/pip-build-env-jazjr65m/overlay/local/lib/python3.10/dist-packages/…

Hi @justin6626 , So when you install lightning.qubit it works but not lightning.gpu? I’d say this confirms that your original error with --config-settings is due to the pip version. Did you try creating a Docker image with the instructions I shared a few days ago?

Sorry about the delay on this. I ended up going a different route in my approach, so it’s no longer an issue.

Trouble installing lightning-gpu with mpi support under Python3.10

PennyLane Help

CatalinaAlbornoz February 13, 2025, 2:17am 11

Thanks for confirming @justin6626

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Trouble installing lightning-gpu with mpi support under Python3.10

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