wehub-resource-sync
135 lines
3.7 KiB
Python
135 lines
3.7 KiB
Python
# Copyright (c) 2023 PaddlePaddle Authors. 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 os
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import time
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import paddle
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from paddle.base import core
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_GLOBAL_TIMERS = None
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def is_timer_initialized():
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return _GLOBAL_TIMERS is not None
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def _ensure_var_is_not_initialized(var, name):
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"""Make sure the input variable is not None."""
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assert var is None, f"{name} has been already initialized."
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def _ensure_var_is_initialized(var, name):
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"""Make sure the input variable is not None."""
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assert var is not None, f"{name} is not initialized."
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def get_timers():
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_ensure_var_is_initialized(_GLOBAL_TIMERS, "timers")
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return _GLOBAL_TIMERS
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def set_timers():
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"""Initialize timers."""
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global _GLOBAL_TIMERS
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_ensure_var_is_not_initialized(_GLOBAL_TIMERS, "timers")
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_GLOBAL_TIMERS = Timers()
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class _Timer:
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"""Timer."""
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def __init__(self, name):
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self.name = name
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self.elapsed_ = 0.0
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self.started_ = False
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self.start_time = time.time()
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def start(self):
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"""Start the timer."""
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assert not self.started_, "timer has already started"
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paddle.device.cuda.synchronize()
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self.start_time = time.time()
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self.started_ = True
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def stop(self):
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"""Stop the timers."""
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assert self.started_, "timer is not started."
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paddle.device.cuda.synchronize()
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self.elapsed_ += time.time() - self.start_time
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self.started_ = False
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def reset(self):
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"""Reset timer."""
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self.elapsed_ = 0.0
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self.started_ = False
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def elapsed(self, reset=True):
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"""Calculate the elapsed time."""
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started_ = self.started_
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# If the timing in progress, end it first.
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if self.started_:
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self.stop()
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# Get the elapsed time.
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elapsed_ = self.elapsed_
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# Reset the elapsed time
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if reset:
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self.reset()
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# If timing was in progress, set it back.
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if started_:
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self.start()
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return elapsed_
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class _GPUEventTimer:
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"""GPUEventTimer."""
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def __init__(self, name):
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self.name = name
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dev_id = int(os.getenv("FLAGS_selected_gpus", "0"))
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self.timer = core.GPUEventTimer(core.CUDAPlace(dev_id))
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def __getattr__(self, name):
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return getattr(self.timer, name)
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class Timers:
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"""Group of timers."""
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def __init__(self):
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self.timers = {}
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def __call__(self, name, use_event=False):
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clazz = _GPUEventTimer if use_event else _Timer
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timer = self.timers.get(name)
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if timer is None:
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timer = clazz(name)
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self.timers[name] = timer
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else:
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assert type(timer) == clazz, (
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f"Invalid timer type: {clazz} vs {type(timer)}"
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)
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return timer
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def log(self, names, normalizer=1.0, reset=True):
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"""Log a group of timers."""
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assert normalizer > 0.0
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string = "time (ms)"
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for name in names:
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elapsed_time = (
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self.timers[name].elapsed(reset=reset) * 1000.0 / normalizer
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)
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string += f" | {name}: {elapsed_time:.2f}"
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print(string, flush=True)
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