pytorch

5ffe24fc - [vulkan][ez] fix always printing out a warning when retrieving the global context (#86697)

[vulkan][ez] fix always printing out a warning when retrieving the global context (#86697) Summary: D40151818 (https://github.com/pytorch/pytorch/commit/82ed5ca3401e965067fd03a6bac57978f884f715) replaces the `TORCH_CHECK` with a `TORCH_WARN` but since it does not check if the context is valid the message gets printed every time. This diff fixes that. Test Plan: Referring to [Pytorch Vulkan Testing Procedures](https://fb.quip.com/fZALAc9zhlcU) On Mac: 1. `vulkan_api_test` on Mac 2. model comparison binary on Mac On Android: 1. `vulkan_api_test` on Android 2. benchmark binary on Android Reviewed By: salilsdesai Differential Revision: D40266820 Pull Request resolved: https://github.com/pytorch/pytorch/pull/86697 Approved by: https://github.com/kirklandsign