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[Tunix] Use self.config.return_logprobs to determine if logprobs should be returned. #1304

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Merged
copybara-service merged 1 commit into from
Mar 26, 2026
+5 −1
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[Tunix] Use self.config.return_logprobs to determine if logprobs should be returned. #1304

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6 changes: 5 additions & 1 deletion tunix/generate/vllm_sampler.py
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Original file line number Diff line number Diff line change
Expand Up @@ -483,6 +483,10 @@ def __call__(
decoded_outputs, out_logprobs, out_tokens = self.detokenize(
input_strings, outputs
)
if self.config.return_logprobs and (
out_logprobs is None or out_logprobs[0] is None
):
raise ValueError("Logprobs are not returned from the vLLM.")

max_tokens_length = max(len(x) for x in prompt_ids)

Expand All @@ -505,5 +509,5 @@ def __call__(
logits=None,
tokens=out_tokens[0],
padded_prompt_tokens=all_input_ids,
logprobs=out_logprobs[0] if len(out_logprobs[0]) else None,
logprobs=out_logprobs[0] if self.config.return_logprobs else None,
)
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