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The immense model sizes of large language models (LLMs) challenge deployment on memory-limited consumer GPUs. Although model compression and parameter offloading are common strategies to address memory limitations, compression can degrade…

Computation and Language · Computer Science 2025-10-10 Pei-Shuo Wang , Jian-Jia Chen , Chun-Che Yang , Chi-Chih Chang , Ning-Chi Huang , Mohamed S. Abdelfattah , Kai-Chiang Wu

Speculative Decoding (SD) enforces strict distributional equivalence to the target model when accepting candidate tokens. While it maintains the target model's generation quality, this strict equivalence limits the speedup achievable by SD…

Artificial Intelligence · Computer Science 2025-06-04 Maximilian Holsman , Yukun Huang , Bhuwan Dhingra

Speculative decoding can substantially accelerate LLM inference, but realizing its benefits in practice is challenging due to evolving workloads and system-level constraints. We present TIDE (Temporal Incremental Draft Engine), a…

Machine Learning · Computer Science 2026-02-06 Jiyoung Park , Hankyu Jang , Changseok Song , Wookeun Jung

Speculative decoding accelerates autoregressive generation by letting a lightweight draft model propose future tokens that a larger target model then verifies in parallel. In practice, however, draft models are usually trained on broad…

Computation and Language · Computer Science 2026-03-31 Mohamad Zbib , Mohamad Bazzi , Ammar Mohanna , Hasan Abed Al Kader Hammoud , Bernard Ghanem

Speculative decoding has become a widely adopted as an effective technique for lossless inference acceleration when deploying large language models (LLMs). While on-the-fly self-speculative methods offer seamless integration and broad…

Machine Learning · Computer Science 2025-11-03 Zhiyuan Ning , Jiawei Shao , Ruge Xu , Xinfei Guo , Jun Zhang , Chi Zhang , Xuelong Li

With the increasingly giant scales of (causal) large language models (LLMs), the inference efficiency comes as one of the core concerns along the improved performance. In contrast to the memory footprint, the latency bottleneck seems to be…

Computation and Language · Computer Science 2024-04-24 Chen Zhang , Zhuorui Liu , Dawei Song

Large Language Models (LLMs) face significant computational bottlenecks during inference due to the quadratic complexity of self-attention mechanisms, particularly as context lengths increase. We introduce SpecAttn, a novel training-free…

Computation and Language · Computer Science 2025-11-03 Harsh Shah

Large Language Models (LLMs) have become essential in advancing natural language processing (NLP) tasks, but their sequential token generation limits inference speed. Multi-Draft Speculative Decoding (MDSD) offers a promising solution by…

Computation and Language · Computer Science 2024-11-11 Ryan Sun , Tianyi Zhou , Xun Chen , Lichao Sun

Diffusion large language models (dLLMs) have shown advantages in text generation, particularly due to their inherent ability for parallel decoding. However, constrained by the quality--speed trade-off, existing inference solutions adopt…

Computation and Language · Computer Science 2026-02-09 Lizhuo Luo , Zhuoran Shi , Jiajun Luo , Zhi Wang , Shen Ren , Wenya Wang , Tianwei Zhang

This technical report describes the design and training of novel speculative decoding draft models, for accelerating the inference speeds of large language models in a production environment. By conditioning draft predictions on both…

Computation and Language · Computer Science 2024-06-10 Davis Wertheimer , Joshua Rosenkranz , Thomas Parnell , Sahil Suneja , Pavithra Ranganathan , Raghu Ganti , Mudhakar Srivatsa

Efficiency, as a critical practical challenge for LLM-driven agentic and reasoning systems, is increasingly constrained by the inherent latency of autoregressive (AR) decoding. Speculative decoding mitigates this cost through a draft-verify…

Machine Learning · Computer Science 2025-12-18 Zicong Cheng , Guo-Wei Yang , Jia Li , Zhijie Deng , Meng-Hao Guo , Shi-Min Hu

Speculative decoding has become a widely adopted technique for accelerating large language model (LLM) inference by drafting multiple candidate tokens and verifying them with a target model in parallel. Its efficiency, however, critically…

Computation and Language · Computer Science 2026-05-19 Shuoyang Sun , Chang Dai , Hao Fang , Kuofeng Gao , Xinhao Zhong , Yi Sun , Fan Mo , Shu-Tao Xia , Bin Chen

Speculative decoding (SPD) accelerates large language model (LLM) inference by letting a smaller draft model propose multiple future tokens that are verified in parallel by a larger target model. The dominant SPD paradigm treats the target…

Computation and Language · Computer Science 2026-05-26 Jinze Li , Yixing Xu , Guanchen Li , Jinfeng Xu , Shuo Yang , Yang Zhang , Xuanwu Yin , Dong Li , Edith C. H. Ngai , Emad Barsoum

Large language model (LLM)-based generative list-wise recommendation has advanced rapidly, but decoding remains sequential and thus latency-prone. To accelerate inference without changing the target distribution, speculative decoding (SD)…

Information Retrieval · Computer Science 2026-05-01 Jiaju Chen , Chongming Gao , Chenxiao Fan , Haoyan Liu , Qingpeng Cai , Peng Jiang , Xiangnan He

Inference efficiency in Large Language Models (LLMs) is fundamentally limited by their serial, autoregressive generation, especially as reasoning becomes a key capability and response sequences grow longer. Speculative decoding (SD) offers…

Machine Learning · Computer Science 2026-02-02 Haoyun Jiang , Junqi He , Feng Hong , Xinlong Yang , Jianwei Zhang , Zheng Li , Zhengyang Zhuge , Zhiyong Chen , Bo Han , Junyang Lin , Jiangchao Yao

Auto-Regressive (AR) models have recently gained prominence in image generation, often matching or even surpassing the performance of diffusion models. However, one major limitation of AR models is their sequential nature, which processes…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Doohyuk Jang , Sihwan Park , June Yong Yang , Yeonsung Jung , Jihun Yun , Souvik Kundu , Sung-Yub Kim , Eunho Yang

Speculative decoding promises faster inference for large language models (LLMs), yet existing methods fail to generalize to real-world settings. Benchmarks typically assume short contexts (e.g., 2K tokens), whereas practical workloads…

Computation and Language · Computer Science 2025-10-10 Jaeseong Lee , seung-won hwang , Aurick Qiao , Gabriele Oliaro , Ye Wang , Samyam Rajbhandari

Reinforcement learning(RL) post-training has become essential for aligning large language models (LLMs), yet its efficiency is increasingly constrained by the rollout phase, where long trajectories are generated token by token. We identify…

We introduce Reward-Guided Speculative Decoding (RSD), a novel framework aimed at improving the efficiency of inference in large language models (LLMs). RSD synergistically combines a lightweight draft model with a more powerful target…

Computation and Language · Computer Science 2025-06-27 Baohao Liao , Yuhui Xu , Hanze Dong , Junnan Li , Christof Monz , Silvio Savarese , Doyen Sahoo , Caiming Xiong

The rapid advancement of large language models (LLMs) has revolutionized code generation tasks across various programming languages. However, the unique characteristics of programming languages, particularly those like Verilog with specific…

Machine Learning · Computer Science 2025-03-19 Changran Xu , Yi Liu , Yunhao Zhou , Shan Huang , Ningyi Xu , Qiang Xu