[QST] Why do I get an ModuleNotFoundError? No module named 'rmm._cuda.stream' about cudf HOT 2 CLOSED

Thanks for the question. I am not sure what the root cause is for this. Can you try running the following on the RHEL 8 machine?

import rmm
print(rmm.__file__)
print(rmm.__version__)
print(dir(rmm))

I will try to set up a reproducer on Rocky 8 later today (the closest OS to RHEL 8.9).

Also, I see your path has names like condabin. Have you tried conda instead of pip?

from cudf.

It turns out that there was a version conflict in the underlying CUDA tookit. The problem is gone after reinstallation.

from cudf.