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[trainer] fix batch processing in PPO trainer (#7576)

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gechengze 2025-04-02 21:17:48 +08:00 committed by GitHub
parent 903db09822
commit 11997593be
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1 changed files with 5 additions and 3 deletions
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src/llamafactory/train/ppo/trainer.py
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@ -241,9 +241,11 @@ class CustomPPOTrainer(PPOTrainer, Trainer):
self.tokenizer.padding_side = "right" # change padding side
queries, responses, rewards = [], [], []
for idx in range(0, self.config.batch_size, self.config.mini_batch_size):
mini_batch_queries, mini_batch_responses = self.get_inputs(
batch[idx : idx + self.config.mini_batch_size]
)
mini_batch = {
"input_ids": batch["input_ids"][idx : idx + self.config.mini_batch_size],
"attention_mask": batch["attention_mask"][idx : idx + self.config.mini_batch_size]
}
mini_batch_queries, mini_batch_responses = self.get_inputs(mini_batch)
mini_batch_rewards = self.get_rewards(mini_batch_queries, mini_batch_responses)
queries.extend(mini_batch_queries)
responses.extend(mini_batch_responses)