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Source code for catalyst.core.callbacks.timer

from catalyst.core.callback import Callback, CallbackNode, CallbackOrder
from catalyst.core.runner import IRunner
from catalyst.tools.time_manager import TimeManager

EPS = 1e-8


[docs]class TimerCallback(Callback): """Logs pipeline execution time."""
[docs] def __init__(self): """@TODO: Docs. Contribution is welcome.""" super().__init__(order=CallbackOrder.metric + 1, node=CallbackNode.all) self.timer = TimeManager()
[docs] def on_loader_start(self, runner: IRunner) -> None: """Loader start hook. Args: runner (IRunner): current runner """ self.timer.reset() self.timer.start("_timer/batch_time") self.timer.start("_timer/data_time")
[docs] def on_loader_end(self, runner: IRunner) -> None: """Loader end hook. Args: runner (IRunner): current runner """ self.timer.reset()
[docs] def on_batch_start(self, runner: IRunner) -> None: """Batch start hook. Args: runner (IRunner): current runner """ self.timer.stop("_timer/data_time") self.timer.start("_timer/model_time")
[docs] def on_batch_end(self, runner: IRunner) -> None: """Batch end hook. Args: runner (IRunner): current runner """ self.timer.stop("_timer/model_time") self.timer.stop("_timer/batch_time") # @TODO: just a trick self.timer.elapsed["_timer/_fps"] = runner.batch_size / ( self.timer.elapsed["_timer/batch_time"] + EPS ) for key, value in self.timer.elapsed.items(): runner.batch_metrics[key] = value self.timer.reset() self.timer.start("_timer/batch_time") self.timer.start("_timer/data_time")
__all__ = ["TimerCallback"]