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# Copyright (c) Microsoft Corporation.
# SPDX-License-Identifier: Apache-2.0
# DeepSpeed Team
import logging
from deepspeed.utils.logging import LoggerFactory
inf_logger = None
def inference_logger(level: int = logging.INFO) -> logging.Logger:
"""
Create the inference logger. NOTE: Logging is not cost free. On a 3960X,
there is a cost of about 6 us per call to a no-op logger, so this should
be used during setup only and not during the inference loop.
Args:
level (int, optional): The logging level. Defaults to logging.INFO.
"""
global inf_logger
if inf_logger is None:
inf_logger = LoggerFactory.create_logger(name="DS-Inference", level=level)
inf_logger.debug("Inference logger created.")
return inf_logger
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