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import numpy as np
from collections import deque
from ditk import logging
from time import time
from ding.framework import task
from typing import TYPE_CHECKING
if TYPE_CHECKING:
from ding.framework.context import Context
def epoch_timer(print_per: int = 1, smooth_window: int = 10):
"""
Overview:
Print time cost of each epoch.
Arguments:
- print_per (:obj:`int`): Print each N epoch.
- smooth_window (:obj:`int`): The window size to smooth the mean.
"""
records = deque(maxlen=print_per * smooth_window)
def _epoch_timer(ctx: "Context"):
start = time()
yield
time_cost = time() - start
records.append(time_cost)
if ctx.total_step % print_per == 0:
logging.info(
"[Epoch Timer][Node:{:>2}]: Cost: {:.2f}ms, Mean: {:.2f}ms".format(
task.router.node_id or 0, time_cost * 1000,
np.mean(records) * 1000
)
)
return _epoch_timer
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