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JetSpec: Breaking the Scaling Ceiling of Speculative Decoding with Parallel Tree Drafting

Hu, Lanxiang et al.
arXiv (All) · Papers
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computation-and-language
Speculative decoding (SD) accelerates autoregressive Large Language Models (LLMs) by drafting multiple tokens and verifying them in parallel, but it faces a scaling limitation: increasing the draft budget improves speed only when acceptance remains high and drafting overhead stays low. This ceiling
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