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feat: save checkpoint before deleting old ones #1453

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merged 4 commits into from
Apr 16, 2020
+10 −1
Merged

feat: save checkpoint before deleting old ones #1453

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a2bb258
feat: save checkpoint before deleting old ones
Ir1d Apr 11, 2020
4073239
fix: make sure that the new model is not deleted
Ir1d Apr 11, 2020
d10e9e4
changelog
Borda Apr 13, 2020
63bc027
Merge branch 'master' into save_before_del
williamFalcon Apr 16, 2020
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3 changes: 3 additions & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).

### Fixed


- Fixed saving checkpoint before deleting old ones ([#1453](https://github.com/PyTorchLightning/pytorch-lightning/pull/1453))

- Fixed loggers - flushing last logged metrics even before continue, e.g. `trainer.test()` results ([#1459](https://github.com/PyTorchLightning/pytorch-lightning/pull/1459))

- Added a missing call to the `on_before_zero_grad` model hook ([#1493](https://github.com/PyTorchLightning/pytorch-lightning/pull/1493)).
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8 changes: 7 additions & 1 deletion pytorch_lightning/callbacks/model_checkpoint.py
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Expand Up @@ -216,10 +216,12 @@ def on_validation_end(self, trainer, pl_module):

def _do_check_save(self, filepath, current, epoch):
# remove kth

del_list = []
if len(self.best_k_models) == self.save_top_k and self.save_top_k > 0:
delpath = self.kth_best_model
self.best_k_models.pop(self.kth_best_model)
self._del_model(delpath)
del_list.append(delpath)

self.best_k_models[filepath] = current
if len(self.best_k_models) == self.save_top_k:
Expand All @@ -238,3 +240,7 @@ def _do_check_save(self, filepath, current, epoch):
f' {current:0.5f} (best {self.best:0.5f}), saving model to'
f' {filepath} as top {self.save_top_k}')
self._save_model(filepath)

for cur_path in del_list:
if cur_path != filepath:
self._del_model(cur_path)