Update skipIfNoCuda decorator/Force GPU tests run in GPU CIs

[salilsdesai]

In response to #1552

• Update the skipIfNoCuda decorator to raise an error if the TORCHAUDIO_TEST_FORCE_CUDA variable is set but CUDA is not available
• Update CI to use TORCHAUDIO_TEST_FORCE_CUDA in gpu unittests

[mthrok]

Hi @salilsdesai

Thanks for working on this. Instead of changing config.yml directly, you need to apply the change to config.yml.in and use regenerate.py to update config.yml. We do this because we have to define the same CI jobs to different Python / CUDA version.

[mthrok]

-e has to be before "${image_name}"

[mthrok]

Looks like our CI does have GPU but the firmware is too old. I see a warning

  c:\users\circleci\project\env\lib\site-packages\torch\cuda\__init__.py:52: UserWarning: CUDA initialization: The NVIDIA driver on your system is too old (found version 10010). Please update your GPU driver by downloading and installing a new version from the URL: http://www.nvidia.com/Download/index.aspx Alternatively, go to: https://pytorch.org to install a PyTorch version that has been compiled with your version of the CUDA driver. (Triggered internally at  ..\c10\cuda\CUDAFunctions.cpp:115.)

https://app.circleci.com/pipelines/github/pytorch/audio/6271/workflows/66eeb5f8-1841-4b97-a0b2-9c7a36adf4a5/jobs/232928/steps

Let me see what's the alternative way to install PyTorch.

[mthrok]

@salilsdesai Can you leave the Windows as-is for now? The Windows CI situation is somewhat complicated to resolve, so we will tackle later. The you are adding is variable so let's merge it first.

[salilsdesai]

@salilsdesai Can you leave the Windows as-is for now? The Windows CI situation is somewhat complicated to resolve, so we will tackle later. The you are adding is variable so let's merge it first.

Oh, you mean I should revert the windows gpu test, right? I'll do that now then.

[mthrok]

@salilsdesai Can you leave the Windows as-is for now? The Windows CI situation is somewhat complicated to resolve, so we will tackle later. The you are adding is variable so let's merge it first.

Oh, you mean I should revert the windows gpu test, right? I'll do that now then.

Yes, exactly. Thanks for updating it.