pytorch

bf882929 - [skip ci] Add explanation for why we split TORCH_CUDA_API (#55641)

[skip ci] Add explanation for why we split TORCH_CUDA_API (#55641) Summary: Provide explanation for why we have (and use) the BUILD_SPLIT_CUDA option as a result of PR https://github.com/pytorch/pytorch/pull/49050. This should hopefully clarify why there is both TORCH_CUDA_CU_API and TORCH_CUDA_CPP_API. Pull Request resolved: https://github.com/pytorch/pytorch/pull/55641 Reviewed By: samestep Differential Revision: D27661729 Pulled By: janeyx99 fbshipit-source-id: a68b44df2b45ce10590b9b0229558a1ad40ce485