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88 lines
3.3 KiB
88 lines
3.3 KiB
# Ultralytics YOLO 🚀, AGPL-3.0 license
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import json
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from time import time
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from ultralytics.hub.utils import HUB_WEB_ROOT, PREFIX, events
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from ultralytics.utils import LOGGER, SETTINGS
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from ultralytics.utils.torch_utils import model_info_for_loggers
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def on_pretrain_routine_end(trainer):
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"""Logs info before starting timer for upload rate limit."""
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session = getattr(trainer, 'hub_session', None)
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if session:
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# Start timer for upload rate limit
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LOGGER.info(f'{PREFIX}View model at {HUB_WEB_ROOT}/models/{session.model_id} 🚀')
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session.timers = {'metrics': time(), 'ckpt': time()} # start timer on session.rate_limit
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def on_fit_epoch_end(trainer):
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"""Uploads training progress metrics at the end of each epoch."""
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session = getattr(trainer, 'hub_session', None)
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if session:
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# Upload metrics after val end
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all_plots = {**trainer.label_loss_items(trainer.tloss, prefix='train'), **trainer.metrics}
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if trainer.epoch == 0:
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all_plots = {**all_plots, **model_info_for_loggers(trainer)}
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session.metrics_queue[trainer.epoch] = json.dumps(all_plots)
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if time() - session.timers['metrics'] > session.rate_limits['metrics']:
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session.upload_metrics()
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session.timers['metrics'] = time() # reset timer
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session.metrics_queue = {} # reset queue
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def on_model_save(trainer):
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"""Saves checkpoints to Ultralytics HUB with rate limiting."""
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session = getattr(trainer, 'hub_session', None)
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if session:
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# Upload checkpoints with rate limiting
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is_best = trainer.best_fitness == trainer.fitness
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if time() - session.timers['ckpt'] > session.rate_limits['ckpt']:
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LOGGER.info(f'{PREFIX}Uploading checkpoint {HUB_WEB_ROOT}/models/{session.model_id}')
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session.upload_model(trainer.epoch, trainer.last, is_best)
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session.timers['ckpt'] = time() # reset timer
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def on_train_end(trainer):
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"""Upload final model and metrics to Ultralytics HUB at the end of training."""
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session = getattr(trainer, 'hub_session', None)
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if session:
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# Upload final model and metrics with exponential standoff
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LOGGER.info(f'{PREFIX}Syncing final model...')
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session.upload_model(trainer.epoch, trainer.best, map=trainer.metrics.get('metrics/mAP50-95(B)', 0), final=True)
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session.alive = False # stop heartbeats
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LOGGER.info(f'{PREFIX}Done ✅\n'
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f'{PREFIX}View model at {HUB_WEB_ROOT}/models/{session.model_id} 🚀')
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def on_train_start(trainer):
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"""Run events on train start."""
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events(trainer.args)
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def on_val_start(validator):
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"""Runs events on validation start."""
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events(validator.args)
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def on_predict_start(predictor):
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"""Run events on predict start."""
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events(predictor.args)
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def on_export_start(exporter):
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"""Run events on export start."""
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events(exporter.args)
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callbacks = {
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'on_pretrain_routine_end': on_pretrain_routine_end,
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'on_fit_epoch_end': on_fit_epoch_end,
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'on_model_save': on_model_save,
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'on_train_end': on_train_end,
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'on_train_start': on_train_start,
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'on_val_start': on_val_start,
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'on_predict_start': on_predict_start,
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'on_export_start': on_export_start} if SETTINGS['hub'] is True else {} # verify enabled
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