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[trainer] fix KeyError at end of pretrain (#8099)

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Ma, Xiaochen 2025-05-19 18:01:26 +08:00 committed by GitHub
parent 89a0d10c18
commit 16e26236eb
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1 changed files with 15 additions and 5 deletions
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src/llamafactory/train/pt/workflow.py
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@ -77,12 +77,22 @@ def run_pt(
# Evaluation
if training_args.do_eval:
metrics = trainer.evaluate(metric_key_prefix="eval")
try:
perplexity = math.exp(metrics["eval_loss"])
except OverflowError:
perplexity = float("inf")
metrics["perplexity"] = perplexity
if isinstance(dataset_module.get("eval_dataset"), dict):
for key in dataset_module["eval_dataset"].keys():
try:
perplexity = math.exp(metrics[f"eval_{key}_loss"])
except OverflowError:
perplexity = float("inf")
metrics[f"eval_{key}_perplexity"] = perplexity
else:
try:
perplexity = math.exp(metrics["eval_loss"])
except OverflowError:
perplexity = float("inf")
metrics["eval_perplexity"] = perplexity
trainer.log_metrics("eval", metrics)
trainer.save_metrics("eval", metrics)