Disable Python user site in Apptainer jobs#787
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Summary
PYTHONNOUSERSITE=1is present before Python starts in the container.PYTHONNOUSERSITE=1inside the container shell as a belt-and-suspenders guard.Why
Apptainer mounts
$HOMEby default. Because the container Python is 3.12, Python was discovering host packages under~/.local/lib/python3.12/site-packagesinside the container. In ORCD H200 debug runs this caused CuPy to import from the host user site and warn about mixedcupy-cuda12x/cupy-cuda13xinstalls.The container already includes the needed CuPy package, so the harness should keep host user-site packages out of
sys.path.Validation
bash -n scripts/slurm_apptainer_train.sbatchbash -n scripts/slurm_apptainer_eval.sbatchPYTHONNOUSERSITE=1:site.ENABLE_USER_SITEisFalse/home/jrusak/.local/...is not onsys.pathcupyimports from/usr/local/lib/python3.12/dist-packages/cupycupy-cuda13x==13.6.0is installed in the visible environmentdask.arrayimports and computes successfullyxarrayopens/orcd/data/abodner/002/jrusak/om4_onedeg_v3/OM4.zarr