mirror of
https://github.com/zebrajr/pytorch.git
synced 2025-12-06 12:20:52 +01:00
29e09a6545
This reverts commit 01edcd4df8.
Reverted https://github.com/pytorch/pytorch/pull/159889 on behalf of https://github.com/jeanschmidt due to internal changes breaks import checks, see [D81845053](https://www.internalfb.com/diff/D81845053) ([comment](https://github.com/pytorch/pytorch/pull/160449#issuecomment-3264887002))
27 lines
1.2 KiB
Python
27 lines
1.2 KiB
Python
from datetime import timedelta
|
|
from typing import Optional
|
|
|
|
from torch._C._distributed_c10d import _DEFAULT_PG_TIMEOUT
|
|
|
|
|
|
__all__ = ["default_pg_timeout", "default_pg_nccl_timeout"]
|
|
|
|
# Default process group wide timeout, if applicable.
|
|
# This only applies to the non-nccl backends
|
|
# To make an attempt at backwards compatibility with THD, we use an
|
|
# extraordinarily high default timeout, given that THD did not have timeouts.
|
|
default_pg_timeout: timedelta = _DEFAULT_PG_TIMEOUT
|
|
# Separate timeout for PGNCCL mainly because it's always been that way in the C++ layer, but until recently
|
|
# there was one default that applied across all backends in the python layer.
|
|
# Later, we could consider merging them back together at the c++ layer if we can align on a same value.
|
|
# (only if TORCH_NCCL_BLOCKING_WAIT or TORCH_NCCL_ASYNC_ERROR_HANDLING is set to 1).
|
|
|
|
try:
|
|
from torch._C._distributed_c10d import _DEFAULT_PG_NCCL_TIMEOUT
|
|
|
|
default_pg_nccl_timeout: Optional[timedelta] = _DEFAULT_PG_NCCL_TIMEOUT
|
|
except ImportError:
|
|
# if C++ NCCL support is not compiled, we don't have access to the default nccl value.
|
|
# if anyone is actually trying to use nccl in this state, it should error.
|
|
default_pg_nccl_timeout = None
|