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Greedy Decoding Is Not Precision-Invariant: Cross-Precision Output Divergence in LLM Inference

Du, Gaoyuan et al.
arXiv (All) · Papers
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Greedy decoding from large language models is commonly treated as deterministic. We show it is not precision-invariant: the same model, prompt, and decoding algorithm produce different outputs in BF16 versus FP16 on identical hardware. Across our evaluations of six models (1.1B-7B parameters, four f
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