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model_checkpoint to save all models #1359

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Apr 5, 2020
Merged

model_checkpoint to save all models #1359

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model_checkpoint to save all models
jamesjjcondon Mar 16, 2020
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changelog
Borda Apr 5, 2020
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Borda Apr 5, 2020
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5 changes: 3 additions & 2 deletions pytorch_lightning/callbacks/model_checkpoint.py
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Original file line number Diff line number Diff line change
Expand Up @@ -77,7 +77,7 @@ def __init__(self, filepath, monitor: str = 'val_loss', verbose: bool = False,
save_top_k: int = 1, save_weights_only: bool = False,
mode: str = 'auto', period: int = 1, prefix: str = ''):
super().__init__()
if save_top_k and os.path.isdir(filepath) and len(os.listdir(filepath)) > 0:
if save_top_k > 0 and os.path.isdir(filepath) and len(os.listdir(filepath)) > 0:
warnings.warn(
f"Checkpoint directory {filepath} exists and is not empty with save_top_k != 0."
"All files in this directory will be deleted when a checkpoint is saved!"
Expand Down Expand Up @@ -216,7 +216,8 @@ def _do_check_save(self, filepath, current, epoch):
if len(self.best_k_models) == self.save_top_k:
delpath = self.kth_best_model
self.best_k_models.pop(self.kth_best_model)
self._del_model(delpath)
if self.save_top_k > 0:
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self._del_model(delpath)

self.best_k_models[filepath] = current
if len(self.best_k_models) == self.save_top_k:
Expand Down