pytorch

d23ce297 - allow changing the cuda allocator settings even after the process started (#84970)

allow changing the cuda allocator settings even after the process started (#84970) Summary: - expose a python call to set the allocator settings, it uses the same format as the value for PYTORCH_CUDA_ALLOCATOR - keep the implementation contained within the cpp file to avoid increasing build times, only expose a function to call the setting - make some of the Allocator Config methods public, now it looks more like a singleton Test Plan: added the unit test Differential Revision: D39487522 Pull Request resolved: https://github.com/pytorch/pytorch/pull/84970 Approved by: https://github.com/zdevito