Skip cuML probe on CPU-only hosts in resolve_backend#37
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`check_cuml_available()` does a full `import cuml` which is very slow and pointless when no GPU is present. `resolve_backend()` now short-circuites: `check_cuml_available()` now only runs when `cuda_available` is True.
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check_cuml_available()does a fullimport cumlwhich is very slow and pointless when no GPU is present.resolve_backend()now short-circuites:check_cuml_available()now only runs whencuda_availableis True.I encountered this when using a uv venv that installed
cumlbut the app was running on a login node with no GPU attached. The code was importingcumlwhich slowed down the kick-start time drastically. Fixed it by using a short-circuit optimization, programming 101.