pytorch

e922826d - [pytorch] simplify lazy initialization of DefaultCPUGenerator singleton (#32897)

[pytorch] simplify lazy initialization of DefaultCPUGenerator singleton (#32897) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/32897 Moving the default static instance into the method to achieve the same purpose. ghstack-source-id: 97570792 Test Plan: - CI Reviewed By: dreiss Differential Revision: D19674566 fbshipit-source-id: 27f54da66dd7667c34905eddaac6579e64aa1118