pytorch

2515ab93 - [FSDP][Docs] Add note on `NCCL_CROSS_NIC=1` for HSDP (#107784)

[FSDP][Docs] Add note on `NCCL_CROSS_NIC=1` for HSDP (#107784) Pull Request resolved: https://github.com/pytorch/pytorch/pull/107784 Approved by: https://github.com/fegin ghstack dependencies: #106068, #106080