twitter-algorithm-ml/common/testing_utils.py

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from contextlib import contextmanager
import datetime
import os
from unittest.mock import patch
import torch.distributed as dist
from tml.ml_logging.torch_logging import logging
MOCK_ENV = {
"LOCAL_RANK": "0",
"WORLD_SIZE": "1",
"LOCAL_WORLD_SIZE": "1",
"MASTER_ADDR": "localhost",
"MASTER_PORT": "29501",
"RANK": "0",
}
@contextmanager
def mock_pg():
with patch.dict(os.environ, MOCK_ENV):
try:
dist.init_process_group(
backend="gloo",
timeout=datetime.timedelta(1),
)
yield
except:
dist.destroy_process_group()
raise
finally:
dist.destroy_process_group()