pytorch

c7e7ea92 - [NamedOptimizer][2/N] Prepare the enablement of state_dict for FSDP (#91147)

[NamedOptimizer][2/N] Prepare the enablement of state_dict for FSDP (#91147) 1. Add param_group check logic and unit test 2. Remove unnecessary check for conditional param update 3. Return the param_group from the inner optimizer so that when param_group is None or not all params are specified, we still return the expected result. Pull Request resolved: https://github.com/pytorch/pytorch/pull/91147 Approved by: https://github.com/fegin