---
description: Uncover the specifics of Ultralytics ClearML callbacks, from pretrain routine start to training end. Boost your ML model performance.
keywords: Ultralytics, clearML, callbacks, pretrain routine start, validation end, train epoch end, training end
---

## _log_debug_samples
---
### ::: ultralytics.utils.callbacks.clearml._log_debug_samples
<br><br>

## _log_plot
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### ::: ultralytics.utils.callbacks.clearml._log_plot
<br><br>

## on_pretrain_routine_start
---
### ::: ultralytics.utils.callbacks.clearml.on_pretrain_routine_start
<br><br>

## on_train_epoch_end
---
### ::: ultralytics.utils.callbacks.clearml.on_train_epoch_end
<br><br>

## on_fit_epoch_end
---
### ::: ultralytics.utils.callbacks.clearml.on_fit_epoch_end
<br><br>

## on_val_end
---
### ::: ultralytics.utils.callbacks.clearml.on_val_end
<br><br>

## on_train_end
---
### ::: ultralytics.utils.callbacks.clearml.on_train_end
<br><br>