[TPU] Lazy Import (#15656)

Signed-off-by: rshaw@neuralmagic.com <robertgshaw2@gmail.com>
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Robert Shaw 2025-03-27 21:57:01 -04:00 committed by GitHub
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@ -15,7 +15,6 @@ import torch
from torch.distributed import ProcessGroup, TCPStore
from torch.distributed.distributed_c10d import (Backend, PrefixStore,
_get_default_timeout,
_shutdown_backend,
_unregister_process_group,
is_nccl_available)
from torch.distributed.rendezvous import rendezvous
@ -343,5 +342,7 @@ def stateless_destroy_torch_distributed_process_group(
Destroy ProcessGroup returned by
stateless_init_torch_distributed_process_group().
"""
# Lazy import for non-CUDA backends.
from torch.distributed.distributed_c10d import _shutdown_backend
_shutdown_backend(pg)
_unregister_process_group(pg.group_name)