Add function to free GPU memory #3643
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Used this discussion page as a reference: https://discuss.pytorch.org/t/how-can-we-release-gpu-memory-cache/14530/27
Added a function to LudwigModel to free GPU memory. Compared to the function in the discussion page, I did not move the individual parameters in a loop but instead just moved the entire model to CPU (this is clearer logic to read and results in a small amount of extra GPU memory freed), and I did not call
delorgc.collect()(these two calls did not seem to impact GPU memory).Credit to @justinxzhao for writing and testing the code.