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Fix documentation for every_n_epochs parameter of ModelCheckpoint #10421

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Nov 19, 2021
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Fix documentation for every_n_epochs parameter of ModelCheckpoint #10421

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3b5c490
Fix misleading ModelCheckpoint documentation on every_n_epochs parameter
adamreeve Nov 8, 2021
3af1cd6
Merge branch 'master' into checkpoint_doc_fix
carmocca Nov 19, 2021
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10 changes: 8 additions & 2 deletions pytorch_lightning/callbacks/model_checkpoint.py
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Expand Up @@ -114,8 +114,14 @@ class ModelCheckpoint(Callback):
guaranteed to execute at the exact time specified, but should be close.
This must be mutually exclusive with ``every_n_train_steps`` and ``every_n_epochs``.
every_n_epochs: Number of epochs between checkpoints.
If ``every_n_epochs == None or every_n_epochs == 0``, we skip saving when the epoch ends.
To disable, set ``every_n_epochs = 0``. This value must be ``None`` or non-negative.
This value must be ``None`` or non-negative.
To disable saving after each epoch, set ``every_n_epochs = 0``.
If all of ``every_n_epochs``, ``every_n_train_steps`` and
``train_time_interval`` are ``None``, we save a checkpoint at the end of every epoch
(equivalent to ``every_n_epochs = 1``).
If ``every_n_epochs == None`` and either ``every_n_train_steps != None`` or ``train_time_interval != None``,
saving at the end of each epoch is disabled
(equivalent to ``every_n_epochs = 0``).
This must be mutually exclusive with ``every_n_train_steps`` and ``train_time_interval``.
Setting both ``ModelCheckpoint(..., every_n_epochs=V, save_on_train_epoch_end=False)`` and
``Trainer(max_epochs=N, check_val_every_n_epoch=M)``
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