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Mixture-of-Experts (MoE) has emerged as a promising paradigm for foundation models due to its efficient and powerful scalability. In this work, we present Sigma-MoE-Tiny, an MoE language model that achieves the highest sparsity compared to…

The Mixture-of-Experts (MoE) technique can scale up the model size of Transformers with an affordable computational overhead. We point out that existing learning-to-route MoE methods suffer from the routing fluctuation issue, i.e., the…

Machine Learning · Computer Science 2022-04-19 Damai Dai , Li Dong , Shuming Ma , Bo Zheng , Zhifang Sui , Baobao Chang , Furu Wei

Mixture-of-Experts (MoE) has emerged as a powerful paradigm for scaling model capacity while preserving computational efficiency. Despite its notable success in large language models (LLMs), existing attempts to apply MoE to Diffusion…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Yujie Wei , Shiwei Zhang , Hangjie Yuan , Yujin Han , Zhekai Chen , Jiayu Wang , Difan Zou , Xihui Liu , Yingya Zhang , Yu Liu , Hongming Shan

Sparse Mixtures of Experts (SMoE) scales model capacity without significant increases in training and inference costs, but exhibits the following two issues: (1) Low expert activation, where only a small subset of experts are activated for…

Computation and Language · Computer Science 2024-04-24 Xun Wu , Shaohan Huang , Wenhui Wang , Furu Wei

The Mixture of Experts (MoE) models are emerging as the latest paradigm for Large Language Models (LLMs). However, due to memory constraints, MoE models with billions or even trillions of parameters can only be deployed in multi-GPU or even…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-01-14 Bowen Zhou , Jinrui Jia , Wenhao He , Yong Zhang , Fang Dong

Mixture-of-Expert (MoE) models outperform conventional models by selectively activating different subnets, named experts, on a per-token basis. This gated computation generates dynamic communications that cannot be determined beforehand,…

Networking and Internet Architecture · Computer Science 2025-09-05 Xudong Liao , Yijun Sun , Han Tian , Xinchen Wan , Yilun Jin , Zilong Wang , Zhenghang Ren , Xinyang Huang , Wenxue Li , Kin Fai Tse , Zhizhen Zhong , Guyue Liu , Ying Zhang , Xiaofeng Ye , Yiming Zhang , Kai Chen

Mixture-of-Experts (MoE) enables efficient scaling of large language models by activating only a subset of experts per input token. However, deploying MoE-based models incurs significant memory overhead due to the need to retain all experts…

Machine Learning · Computer Science 2026-02-24 Geng Zhang , Yuxuan Han , Yuxuan Lou , Yiqi Zhang , Wangbo Zhao , Yang You

Sparsely gated Mixture-of-Expert (MoE) has demonstrated its effectiveness in scaling up deep neural networks to an extreme scale. Despite that numerous efforts have been made to improve the performance of MoE from the model design or system…

Machine Learning · Computer Science 2023-02-21 Chang Chen , Min Li , Zhihua Wu , Dianhai Yu , Chao Yang

Mixture-of-Experts (MoE) models enable efficient scaling of large language models (LLMs) by activating only a subset of experts per input. However, we observe that the commonly used auxiliary load balancing loss often leads to expert…

Computation and Language · Computer Science 2026-01-27 Hongcan Guo , Haolang Lu , Guoshun Nan , Bolun Chu , Jialin Zhuang , Yuan Yang , Wenhao Che , Xinye Cao , Sicong Leng , Qimei Cui , Xudong Jiang

With the recent advancements of deep learning technologies, the performance of voice conversion (VC) in terms of quality and similarity has been significantly improved. However, heavy computations are generally required for…

Sound · Computer Science 2019-12-30 Yu-Tao Chang , Yuan-Hong Yang , Yu-Huai Peng , Syu-Siang Wang , Tai-Shih Chi , Yu Tsao , Hsin-Min Wang

The Mixture-of-Experts (MoE) architecture improves computational efficiency via sparse expert activation, but throughput-oriented inference faces substantial GPU memory pressure due to a significant parameter size and intermediate data.…

Machine Learning · Computer Science 2026-05-20 Muyoung Son , Yi Chen , Seungjae Yoo , Soongyu Choi , Joo-Young Kim

Mixture of Experts (MoE) architecture has become the standard for state-of-the-art large language models, owing to its computational efficiency through sparse expert activation. However, sparsity through finer expert granularity is becoming…

Machine Learning · Computer Science 2026-05-12 Jongseok Park , Sunga Kim , Zhenyu Gu , Ion Stoica , Alvin Cheung

Sparse Mixture-of-Experts (MoE) has been a successful approach for scaling multilingual translation models to billions of parameters without a proportional increase in training computation. However, MoE models are prohibitively large and…

Computation and Language · Computer Science 2021-10-11 Sneha Kudugunta , Yanping Huang , Ankur Bapna , Maxim Krikun , Dmitry Lepikhin , Minh-Thang Luong , Orhan Firat

An increasing number of LLMs employ Mixture-of-Experts (MoE) architectures where the feed-forward layer is replaced by a pool of experts and each token only activates a small subset of them. During autoregressive generation, these models…

Machine Learning · Computer Science 2025-11-05 Costin-Andrei Oncescu , Qingyang Wu , Wai Tong Chung , Robert Wu , Bryan Gopal , Junxiong Wang , Tri Dao , Ben Athiwaratkun

As large language models (LLMs) continue to scale up, mixture-of-experts (MoE) has become a common technology in SOTA models. MoE models rely on expert parallelism (EP) to alleviate memory bottleneck, which introduces all-to-all…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-10-30 Xinru Tang , Jingxiang Hou , Dingcheng Jiang , Taiquan Wei , Jiaxin Liu , Jinyi Deng , Huizheng Wang , Qize Yang , Haoran Shang , Chao Li , Yang Hu , Shouyi Yin

The application of mixture-of-experts (MoE) is gaining popularity due to its ability to improve model's performance. In an MoE structure, the gate layer plays a significant role in distinguishing and routing input features to different…

Machine Learning · Computer Science 2024-02-05 Zhitian Xie , Yinger Zhang , Chenyi Zhuang , Qitao Shi , Zhining Liu , Jinjie Gu , Guannan Zhang

Sparsely-activated Mixture-of-Expert (MoE) layers have found practical applications in enlarging the model size of large-scale foundation models, with only a sub-linear increase in computation demands. Despite the wide adoption of hybrid…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-07-04 Xinglin Pan , Wenxiang Lin , Shaohuai Shi , Xiaowen Chu , Weinong Sun , Bo Li

Large Language Models (LLMs) based on Mixture-of-Experts (MoE) are pivotal in industrial applications for their ability to scale performance efficiently. However, standard MoEs enforce uniform expert sizes,creating a rigidity that fails to…

Computation and Language · Computer Science 2026-04-29 Zhicheng Ma , Xiang Liu , Zhaoxiang Liu , Ning Wang , Yi Shen , Kai Wang , Shuming Shi , Shiguo Lian

Mixture-of-Experts (MoE) models have become a dominant paradigm for scaling large language models, but their rapidly growing parameter sizes introduce a fundamental inefficiency during inference: most expert weights remain idle in GPU…

Machine Learning · Computer Science 2026-05-01 Qingxiu Liu , Cyril Y. He , Hanser Jiang , Zion Wang , Alan Zhao , Patrick P. C. Lee

We present ScatterMoE, an implementation of Sparse Mixture-of-Experts (SMoE) on GPUs. ScatterMoE builds upon existing implementations, and overcoming some of the limitations to improve inference and training speed, and memory footprint.…

Machine Learning · Computer Science 2024-10-07 Shawn Tan , Yikang Shen , Rameswar Panda , Aaron Courville