Add debugging output when only one GPU is detected in CUDA tests.#13089
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Add debugging output when only one GPU is detected in CUDA tests.#13089copybara-service[bot] wants to merge 1 commit intomasterfrom
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When cudaGetDeviceCount returns 1, print environment variables (CUDA_VISIBLE_DEVICES, NVIDIA_VISIBLE_DEVICES), list /dev/nvidia*, and run nvidia-smi -L. Hopefully this helps diagnose issues where not all expected GPUs are visible to the CUDA application. Right now I cannot reproduce the failure locally. PiperOrigin-RevId: 910973478
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Add debugging output when only one GPU is detected in CUDA tests.
When cudaGetDeviceCount returns 1, print environment variables
(CUDA_VISIBLE_DEVICES, NVIDIA_VISIBLE_DEVICES), list /dev/nvidia*,
and run nvidia-smi -L.
Hopefully this helps diagnose issues where not all expected GPUs are visible
to the CUDA application. Right now I cannot reproduce the failure locally.