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Post training quantization is essential for deploying large language models (LLMs) on resource constrained hardware, yet state of the art methods enforce uniform bit widths across layers, yielding suboptimal accuracy efficiency trade offs.…

Machine Learning · Computer Science 2026-03-19 Arpit Singh Gautam , Saurabh Jha

Recently low-bit (e.g., 8-bit) network quantization has been extensively studied to accelerate the inference. Besides inference, low-bit training with quantized gradients can further bring more considerable acceleration, since the backward…

Machine Learning · Computer Science 2020-01-01 Feng Zhu , Ruihao Gong , Fengwei Yu , Xianglong Liu , Yanfei Wang , Zhelong Li , Xiuqi Yang , Junjie Yan

Recently, long-thought reasoning models achieve strong performance on complex reasoning tasks, but often incur substantial inference overhead, making efficiency a critical concern. Our empirical analysis reveals that the benefit of using…

Artificial Intelligence · Computer Science 2025-05-22 Haotian Luo , Haiying He , Yibo Wang , Jinluan Yang , Rui Liu , Naiqiang Tan , Xiaochun Cao , Dacheng Tao , Li Shen

Post-Training Quantization (PTQ) reduces the memory footprint and computational overhead of deep neural networks by converting full-precision (FP) values into quantized and compressed data types. While PTQ is more cost-efficient than…

Computer Vision and Pattern Recognition · Computer Science 2025-10-08 Ali Zoljodi , Radu Timofte , Masoud Daneshtalab

While Neural Processing Units (NPUs) offer high theoretical efficiency for edge AI, state-of-the-art Vision--Language Models (VLMs) tailored for GPUs often falter on these substrates. We attribute this hardware-model mismatch to two primary…

Computation and Language · Computer Science 2025-12-09 Wei Chen , Liangmin Wu , Yunhai Hu , Zhiyuan Li , Zhiyuan Cheng , Yicheng Qian , Lingyue Zhu , Zhipeng Hu , Luoyi Liang , Qiang Tang , Zhen Liu , Han Yang

We introduce a Power-of-Two low-bit post-training quantization(PTQ) method for deep neural network that meets hardware requirements and does not call for long-time retraining. Power-of-Two quantization can convert the multiplication…

Computer Vision and Pattern Recognition · Computer Science 2022-09-27 Hongyi Yao , Pu Li , Jian Cao , Xiangcheng Liu , Chenying Xie , Bingzhang Wang

Diffusion generative models have become the standard for producing high-quality, coherent video content, yet their slow inference speeds and high computational demands hinder practical deployment. Although both quantization and sparsity can…

Computer Vision and Pattern Recognition · Computer Science 2025-06-09 Akide Liu , Zeyu Zhang , Zhexin Li , Xuehai Bai , Yizeng Han , Jiasheng Tang , Yuanjie Xing , Jichao Wu , Mingyang Yang , Weihua Chen , Jiahao He , Yuanyu He , Fan Wang , Gholamreza Haffari , Bohan Zhuang

We propose LLM-FP4 for quantizing both weights and activations in large language models (LLMs) down to 4-bit floating-point values, in a post-training manner. Existing post-training quantization (PTQ) solutions are primarily integer-based…

Computation and Language · Computer Science 2024-04-30 Shih-yang Liu , Zechun Liu , Xijie Huang , Pingcheng Dong , Kwang-Ting Cheng

Quantization is a technique used in deep neural networks (DNNs) to increase execution performance and hardware efficiency. Uniform post-training quantization (PTQ) methods are common, since they can be implemented efficiently in hardware…

Machine Learning · Computer Science 2021-10-29 Gil Shomron , Freddy Gabbay , Samer Kurzum , Uri Weiser

As the foundation of large language models (LLMs), self-attention module faces the challenge of quadratic time and memory complexity with respect to sequence length. FlashAttention accelerates attention computation and reduces its memory…

Machine Learning · Computer Science 2024-09-27 Shimao Chen , Zirui Liu , Zhiying Wu , Ce Zheng , Peizhuang Cong , Zihan Jiang , Yuhan Wu , Lei Su , Tong Yang

Quantization can accelerate large language model (LLM) inference. Going beyond INT8 quantization, the research community is actively exploring even lower precision, such as INT4. Nonetheless, state-of-the-art INT4 quantization techniques…

Computation and Language · Computer Science 2025-05-02 Yujun Lin , Haotian Tang , Shang Yang , Zhekai Zhang , Guangxuan Xiao , Chuang Gan , Song Han

Integer AI inference significantly reduces computational complexity in embedded systems. Quantization-aware training (QAT) helps mitigate accuracy degradation associated with post-training quantization but still overlooks the impact of…

Machine Learning · Computer Science 2025-10-14 Lion Mueller , Alberto Garcia-Ortiz , Ardalan Najafi , Adam Fuks , Lennart Bamberg

This document presents a vision for a novel AI infrastructure design that has been initially validated through inference simulations on state-of-the-art large language models. Advancements in deep learning and specialized hardware have…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-11-17 Jiamin Li , Lei Qu , Tao Zhang , Grigory Chirkov , Shuotao Xu , Peng Cheng , Lidong Zhou

Despite the proliferation of diverse hardware accelerators (e.g., NPU, TPU, DPU), deploying deep learning models on edge devices with fixed-point hardware is still challenging due to complex model quantization and conversion. Existing model…

Machine Learning · Computer Science 2023-08-07 Manasa Manohara , Sankalp Dayal , Tariq Afzal , Rahul Bakshi , Kahkuen Fu

As the rapid scaling of large language models (LLMs) poses significant challenges for deployment on resource-constrained devices, there is growing interest in extremely low-bit quantization, such as 2-bit. Although prior works have shown…

Machine Learning · Computer Science 2025-06-12 Jung Hyun Lee , Seungjae Shin , Vinnam Kim , Jaeseong You , An Chen

Chain-of-Thought (CoT) prompting symbolized a huge improvement of reasoning capabilities of Large Language Models (LLMs). However, scaling up test-time computation yields extensive CoT sequences, introducing severe inference latency and…

Machine Learning · Computer Science 2026-05-12 Tianhao Qian

Training large Mixture-of-Experts (MoE) models remains computationally prohibitive due to their extreme compute and memory demands. Although low-precision training promises to accelerate computation and reduce memory footprint, existing…

Machine Learning · Computer Science 2025-11-05 Fengjuan Wang , Zhiyi Su , Xingzhu Hu , Cheng Wang , Mou Sun

Ultra low-bit quantization brings substantial efficiency for Transformer-based models, but the accuracy degradation and limited GPU support hinder its wide usage. In this paper, we analyze zero-point distortion in binarization and propose a…

Machine Learning · Computer Science 2026-04-07 Yifu Ding , Xianglong Liu , Shenghao Jin , Jinyang Guo , Jiwen Lu

In this paper, we explore FP8 low-bit data formats for efficient training of large language models (LLMs). Our key insight is that most variables, such as gradients and optimizer states, in LLM training can employ low-precision data formats…

Chain-of-Thought significantly enhances a model's reasoning capability, but it also comes with a considerable increase in inference costs due to long chains. With the observation that the reasoning path can be easily compressed under easy…

Artificial Intelligence · Computer Science 2025-02-14 Xinyin Ma , Guangnian Wan , Runpeng Yu , Gongfan Fang , Xinchao Wang