Compile test fix

[DN6]

What does this PR do?

Running into a strange error when Pytest is collecting the tests with the new device agonistic tests checks

Running

 RUN_SLOW=yes python -m pytest -s -v tests/

Will lead to the following error

ERROR tests/pipelines/text_to_video_synthesis/test_video_to_video.py - ValueError: You have passed a device of type 'cuda' which should work with 'fp16', but 'cuda' does not seem to be correctly installed on your machine: Deterministic behavior was enabled with either `torch.use_deterministic_algorithms(True)` or `at::Context::setDeterministicAlgorithms(true)`, but this operation is not deterministic because it uses CuBLAS and you have CUDA >= 10.2. To enable deterministic behavior in this case, you must set an environment variable before running your PyTorch application: CUBLAS_WORKSPACE_CONFIG=:4096:8 or CUBLAS_WORKSPACE_CONFIG=:16:8. For more information, go to 

Because two of of the checks use a nondeterministic op (@) to veritfy whether fp16/fp64 is supported.

But running any test that throws this error directly works fine

 RUN_SLOW=yes python -m pytest -s -v tests/<path to test>

Changing the check to use a deterministic operation to fix this. Although I'm not 100% sure why the collection step fails.

Fixes # (issue)

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[DN6]

@patrickvonplaten Gentle ping

[patrickvonplaten]

Nice!