175 lines
5.2 KiB
Python
175 lines
5.2 KiB
Python
# Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import time
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import json
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import logging
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import os
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import inspect
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import sys
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import re
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from contextlib import contextmanager
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import functools
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NVLOGGER_VERSION='0.1.0'
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NVLOGGER_TOKEN= ':::NVLOG'
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NVLOGGER_NAME="nv_dl_logger"
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NVLOGGER_FILE_NAME="nv_dl_logger"
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RUN_SCOPE = 0
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EPOCH_SCOPE = 1
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TRAIN_ITER_SCOPE = 2
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EVAL_ITER_SCOPE = 3
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LOGGING_SCOPE = {
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RUN_SCOPE,
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EPOCH_SCOPE,
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TRAIN_ITER_SCOPE,
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EVAL_ITER_SCOPE
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}
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def get_caller(stack_index=2, root_dir=None):
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caller = inspect.getframeinfo(inspect.stack()[stack_index][0])
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# Trim the file names for readability.
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filename = caller.filename
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if root_dir is not None:
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filename = re.sub("^" + root_dir + "/", "", filename)
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return "%s:%d" % (filename, caller.lineno)
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class NVLogger(object):
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__instance = None
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token = NVLOGGER_TOKEN
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version = NVLOGGER_VERSION
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stack_offset = 0
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extra_print = False
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model = "NN"
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root_dir = None
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worker = [0]
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prefix = ''
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log_file = None
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file_handler = None
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@staticmethod
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def get_instance():
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if NVLogger.__instance is None:
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NVLogger()
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return NVLogger.__instance
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def set_worker(self, worker):
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if worker is None:
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self.prefix = ''
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self.worker = [0]
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else:
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self.prefix = json.dumps(worker)
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self.worker = list(worker)
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def set_file(self, file_name=None):
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if file_name is None:
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self.log_file = os.getenv(NVLOGGER_FILE_NAME)
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else:
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self.log_file = file_name
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if self.log_file:
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self.file_handler = logging.FileHandler(self.log_file)
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self.file_handler.setLevel(logging.DEBUG)
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self.logger.addHandler(self.file_handler)
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self.stream_handler.setLevel(logging.INFO)
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else:
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self.stream_handler.setLevel(logging.DEBUG)
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def __init__(self):
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if NVLogger.__instance is None:
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NVLogger.__instance = self
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else:
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raise Exception("This class is a singleton!")
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self.logger = logging.getLogger(NVLOGGER_NAME)
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self.logger.setLevel(logging.DEBUG)
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self.stream_handler = logging.StreamHandler(stream=sys.stdout)
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self.stream_handler.setLevel(logging.DEBUG)
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self.logger.addHandler(self.stream_handler)
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def print_vars(self, variables, forced=False, stack_offset=0):
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if isinstance(variables, dict):
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for v in variables.keys():
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self.log(key=v, value=variables[v], forced=forced, stack_offset=stack_offset+1)
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def print_vars2(self, key, variables, forced=False, stack_offset=0):
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if isinstance(variables, dict):
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self.log(key=key, value=variables, forced=forced, stack_offset=stack_offset+1)
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def log(self, key, value=None, forced=False, stack_offset=0):
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# only the 0-worker will log
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if not forced and self.worker != 0:
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pass
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if value is None:
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msg = key
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else:
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str_json = json.dumps(value)
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msg = '{key}: {value}'.format(key=key, value=str_json)
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call_site = get_caller(2 + self.stack_offset + stack_offset, root_dir=self.root_dir)
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now = time.time()
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message = msg
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if self.extra_print:
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print()
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self.logger.debug(message)
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LOGGER = NVLogger.get_instance()
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@contextmanager
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def timed_block(prefix, value=None, logger=LOGGER, forced=False, stack_offset=2):
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""" This function helps with timed blocks
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----
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Parameters:
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prefix - one of items from TIMED_BLOCKS; the action to be timed
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logger - NVLogger object
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forced - if True then the events are always logged (even if it should be skipped)
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"""
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if logger is None:
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pass
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logger.log(key=prefix + "_start", value=value, forced=forced, stack_offset=stack_offset)
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yield logger
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logger.log(key=prefix + "_stop", forced=forced, stack_offset=stack_offset)
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def timed_function(prefix, variable=None, forced=False):
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""" This decorator helps with timed functions
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----
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Parameters:
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prefix - one of items from TIME_BLOCK; the action to be timed
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logger - NVLogger object
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forced - if True then the events are always logged (even if it should be skipped)
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"""
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def timed_function_decorator(func):
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@functools.wraps(func)
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def wrapper(*args, **kwargs):
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logger = kwargs.get('logger', LOGGER)
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value = kwargs.get(variable, next(iter(args), None))
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with timed_block(prefix=prefix, logger=logger, value=value, forced=forced, stack_offset=3):
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func(*args, **kwargs)
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return wrapper
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return timed_function_decorator
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