_settings.get_as_int("/physics/cudaDevice") return -1

Omniverse Isaac Sim
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_settings.get_as_int(“/physics/cudaDevice”) return -1 in SimulationContext in extensions, how to fix it?

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Hi @user144975 - The method _settings.get_as_int(“/physics/cudaDevice”) is trying to fetch the ID of the CUDA device being used. A return value of -1 often indicates that no CUDA device is selected or available.

This could be due to several reasons:

  1. No CUDA-compatible device is available: In case there is no CUDA-compatible GPU available on your machine, you will need to ensure you have a CUDA-enabled GPU installed.
  2. CUDA is not installed: Ensure you have installed CUDA toolkit on your machine.
  3. CUDA device is not accessible: Depending on the execution environment of the extension, the CUDA device might not be accessible. In such case, ensure your extension has the necessary permissions to access the CUDA device.
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Thanks to your reply. It is weird because I am sure my cuda is available, and it works fine in standalone app, I assign the value maually, and it works.

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