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3 changes: 3 additions & 0 deletions deepspeed/runtime/engine.py
Original file line number Diff line number Diff line change
Expand Up @@ -1482,6 +1482,9 @@ def save_checkpoint(self, save_dir, tag=None, client_state={}, save_latest=True)
if tag is None:
tag = f"global_step{self.global_steps}"

# Ensure tag is a string
tag = str(tag)

# Ensure checkpoint tag is consistent across ranks
self._checkpoint_tag_validation(tag)

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