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Large language models (LLMs) enable long-context tasks but face efficiency challenges due to the growing key-value (KV) cache. We propose LeanK, a learning-based method that prunes unimportant key (K) cache channels by leveraging static…

Machine Learning · Computer Science 2025-08-05 Yike Zhang , Zhiyuan He , Huiqiang Jiang , Chengruidong Zhang , Yuqing Yang , Jianyong Wang , Lili Qiu

Parameter-Efficient Fine-Tuning (PEFT) methods have become crucial for rapidly adapting large language models (LLMs) to downstream tasks. Prefix-Tuning, an early and effective PEFT technique, demonstrated the ability to achieve performance…

Computation and Language · Computer Science 2026-04-21 Haonan Wang , Brian Chen , Siquan Li , Xinhe Liang , Hwee Kuan Lee , Kenji Kawaguchi , Tianyang Hu

Prior parameter-efficient fine-tuning (PEFT) algorithms reduce memory usage and computational costs of fine-tuning large neural network models by training only a few additional adapter parameters, rather than the entire model. However, the…

Machine Learning · Computer Science 2025-03-12 Sunghyeon Woo , Sol Namkung , Sunwoo Lee , Inho Jeong , Beomseok Kim , Dongsuk Jeon

The emergence of fine-grained numerical formats like NVFP4 presents new opportunities for efficient Large Language Model (LLM) inference. However, it is difficult to adapt existing Post-Training Quantization (PTQ) strategies to these…

Machine Learning · Computer Science 2026-01-13 Haoqian Meng , Yilun Luo , Yafei Zhao , Wenyuan Liu , Peng Zhang , Xindian Ma

Large language models (LLMs) have recently emerged as powerful tools for tackling many language-processing tasks. Despite their success, training and fine-tuning these models is still far too computationally and memory intensive. In this…

Computer Vision and Pattern Recognition · Computer Science 2024-10-22 Roy Miles , Pradyumna Reddy , Ismail Elezi , Jiankang Deng

Fine-tuning is an important step in adapting foundation models such as large language models to downstream tasks. To make this step more accessible to users with limited computational budgets, it is crucial to develop fine-tuning methods…

Computation and Language · Computer Science 2025-07-28 Cen-Jhih Li , Aditya Bhaskara

Large language model (LLM) training and finetuning are often bottlenecked by limited GPU memory. While existing projection-based optimization methods address this by projecting gradients into a lower-dimensional subspace to reduce optimizer…

Machine Learning · Computer Science 2024-06-26 Aashiq Muhamed , Oscar Li , David Woodruff , Mona Diab , Virginia Smith

The expansion of context windows in large language models (LLMs) to multi-million tokens introduces severe memory and compute bottlenecks, particularly in managing the growing Key-Value (KV) cache. While Compute Express Link (CXL) enables…

Length generalization, the ability to solve problems longer than those seen during training, remains a critical challenge for large language models (LLMs). Previous work modifies positional encodings (PEs) and data formats to improve length…

Computation and Language · Computer Science 2025-05-20 Yi Hu , Shijia Kang , Haotong Yang , Haotian Xu , Muhan Zhang

Long-context supervised fine-tuning (Long-SFT) plays a vital role in enhancing the performance of large language models (LLMs) on long-context tasks. To smoothly adapt LLMs to long-context scenarios, this process typically entails training…

Machine Learning · Computer Science 2025-12-16 Hongtao Xu , Wenting Shen , Yuanxin Wei , Ang Wang , Guo Runfan , Tianxing Wang , Yong Li , Mingzhen Li , Weile Jia

Large Language Models (LLMs) have seen remarkable advancements, achieving state-of-the-art results in diverse applications. Fine-tuning, an important step for adapting LLMs to specific downstream tasks, typically involves further training…

Computation and Language · Computer Science 2026-04-07 Yuchen Yang , Wenze Lin , Enhao Huang , Zhixuan Chu , Hongbin Zhou , Lan Tao , Yiming Li , Zhan Qin , Kui Ren

While Large Language Models (LLMs) have achieved remarkable success in various fields, the efficiency of training and inference remains a major challenge. To address this issue, we propose SUBLLM, short for Subsampling-Upsampling-Bypass…

Computation and Language · Computer Science 2024-08-26 Quandong Wang , Yuxuan Yuan , Xiaoyu Yang , Ruike Zhang , Kang Zhao , Wei Liu , Jian Luan , Daniel Povey , Bin Wang

The scalability of long-context large language models is fundamentally limited by the quadratic memory cost of exact self-attention, which often leads to out-of-memory (OOM) failures on modern hardware. Existing methods improve memory…

Machine Learning · Computer Science 2026-04-23 Yiming Bian , Joshua M. Akey

LLM decoding is bottlenecked for large batches and long contexts by loading the key-value (KV) cache from high-bandwidth memory, which inflates per-token latency, while the sequential nature of decoding limits parallelism. We analyze the…

Machine Learning · Computer Science 2025-05-28 Ted Zadouri , Hubert Strauss , Tri Dao

In high-performance computing, hotspot GPU kernels are primary bottlenecks, and expert manual tuning is costly and hard to port. Large language model methods often assume kernels can be compiled and executed cheaply, which fails in large…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-12-30 Ruifan Chu , Anbang Wang , Xiuxiu Bai , Shuai Liu , Xiaoshe Dong

The DenseNet architecture is highly computationally efficient as a result of feature reuse. However, a naive DenseNet implementation can require a significant amount of GPU memory: If not properly managed, pre-activation batch normalization…

Computer Vision and Pattern Recognition · Computer Science 2017-07-24 Geoff Pleiss , Danlu Chen , Gao Huang , Tongcheng Li , Laurens van der Maaten , Kilian Q. Weinberger

As the length of input text increases, the key-value (KV) cache in LLMs imposes prohibitive GPU memory costs and limits long-context inference on resource constrained devices. Existing approaches, such as KV quantization and pruning, reduce…

Machine Learning · Computer Science 2025-12-24 Tenghui Li , Guoxu Zhou , Xuyang Zhao , Yuning Qiu , Qibin Zhao

Full parameter fine tuning is a key technique for adapting large language models (LLMs) to downstream tasks, but it incurs substantial memory overhead due to the need to cache extensive intermediate activations for backpropagation. This…

Machine Learning · Computer Science 2025-12-25 Ningyuan Liu , Jing Yang , Kaitong Cai , Keze Wang

Parameter-Efficient Fine-Tuning (PEFT) is widely used for adapting Large Language Models (LLMs) for various tasks. Recently, there has been an increasing demand for fine-tuning a single LLM for multiple tasks because it requires overall…

Computation and Language · Computer Science 2026-05-15 Anjir Ahmed Chowdhury , Syed Zawad , Xiaolong Ma , Xu Dong , Feng Yan

With the widespread deployment of long-context large language models (LLMs), there has been a growing demand for efficient support of high-throughput inference. However, as the key-value (KV) cache expands with the sequence length, the…

Machine Learning · Computer Science 2025-04-29 Hanshi Sun , Li-Wen Chang , Wenlei Bao , Size Zheng , Ningxin Zheng , Xin Liu , Harry Dong , Yuejie Chi , Beidi Chen