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The Mixture-of-Experts (MoE) architecture is crucial for scaling large language models, but its scalability is severely limited by inter-GPU communication bottlenecks in multi-GPU systems. Although overlapping communication with computation…

Hardware Architecture · Computer Science 2026-05-08 Zhuoshan Zhou , Chen Zhang , Shuyi Zhang , Qijun Zhang , Haibo Wang , Zhe Zhou , Zhipeng Tu , Guangyu Sun , Yijia Diao , Zhigang Ji , Jingwen Leng , Guanghui He , Minyi Guo

Mixture-of-Experts (MoE) model architectures can significantly reduce the number of activated parameters per token, enabling computationally efficient training and inference. However, their large overall parameter counts and model sizes…

Machine Learning · Computer Science 2026-02-13 Arian Raje , Anupam Nayak , Gauri Joshi

Sparse Mixture of Experts (MoE) models offer a scalable and efficient architecture for training large neural networks by activating only a subset of parameters ("experts") for each input. A learned router computes a distribution over these…

Machine Learning · Computer Science 2025-10-14 Nabil Omi , Siddhartha Sen , Ali Farhadi

Sparsely-activated Mixture-of-experts (MoE) models allow the number of parameters to greatly increase while keeping the amount of computation for a given token or a given sample unchanged. However, a poor expert routing strategy (e.g. one…

Machine Learning · Computer Science 2022-10-17 Yanqi Zhou , Tao Lei , Hanxiao Liu , Nan Du , Yanping Huang , Vincent Zhao , Andrew Dai , Zhifeng Chen , Quoc Le , James Laudon

Frontier models increasingly adopt Mixture-of-Experts (MoE) architectures to achieve large-model performance at reduced cost. However, training MoE models on HPC platforms is hindered by large memory footprints, frequent large-scale…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-05-07 Sajal Dash , Feiyi Wang

Mixture-of-Experts (MoE) is an emerging technique for scaling large models with sparse activation. MoE models are typically trained in a distributed manner with an expert parallelism scheme, where experts in each MoE layer are distributed…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-11-26 Fahao Chen , Peng Li , Zicong Hong , Zhou Su , Song Guo

Mixture-of-Expert (MoE) models enable efficient inference by employing smaller experts and activating only a subset of them per token. MoE serving engines distribute experts across multiple GPUs and route tokens to appropriate GPUs at…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-05-20 Sourish Wawdhane , Avinash Kumar , Poulami Das

Sparsely-gated mixture-of-experts (MoE) has been widely adopted to scale deep learning models to trillion-plus parameters with fixed computational cost. The algorithmic performance of MoE relies on its token routing mechanism that forwards…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-06-06 Changho Hwang , Wei Cui , Yifan Xiong , Ziyue Yang , Ze Liu , Han Hu , Zilong Wang , Rafael Salas , Jithin Jose , Prabhat Ram , Joe Chau , Peng Cheng , Fan Yang , Mao Yang , Yongqiang Xiong

In large language models like the Generative Pre-trained Transformer, the Mixture of Experts paradigm has emerged as a powerful technique for enhancing model expressiveness and accuracy. However, deploying GPT MoE models for parallel…

Machine Learning · Computer Science 2024-01-18 Jinghan Yao , Quentin Anthony , Aamir Shafi , Hari Subramoni , Dhabaleswar K. , Panda

Mixture of Experts (MoE) models enable parameter-efficient scaling through sparse expert activations, yet optimizing their inference and memory costs remains challenging due to limited understanding of their specialization behavior. We…

Machine Learning · Computer Science 2026-03-09 Marmik Chaudhari , Idhant Gulati , Nishkal Hundia , Pranav Karra , Shivam Raval

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

The Mixtures-of-Experts (MoE) model is a widespread distributed and integrated learning method for large language models (LLM), which is favored due to its ability to sparsify and expand models efficiently. However, the performance of MoE…

Machine Learning · Computer Science 2024-05-24 Jing Li , Zhijie Sun , Xuan He , Li Zeng , Yi Lin , Entong Li , Binfan Zheng , Rongqian Zhao , Xin Chen

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

The Mixture of Experts (MoE) is a widely known neural architecture where an ensemble of specialized sub-models optimizes overall performance with a constant computational cost. However, conventional MoEs pose challenges at scale due to the…

Computation and Language · Computer Science 2023-09-12 Ted Zadouri , Ahmet Üstün , Arash Ahmadian , Beyza Ermiş , Acyr Locatelli , Sara Hooker

Scaling Mixture-of-Experts (MoE) training introduces systems challenges absent in dense models. Because each token activates only a subset of experts, this sparsity allows total parameters to grow much faster than per-token computation,…

In recent years, Mixture-of-Experts (MoE) has emerged as an effective approach for enhancing the capacity of deep neural network (DNN) with sub-linear computational costs. However, storing all experts on GPUs incurs significant memory…

Machine Learning · Computer Science 2025-03-11 Suraiya Tairin , Shohaib Mahmud , Haiying Shen , Anand Iyer

Mixture-of-Experts (MoE) architectures offer the promise of larger model capacity without the prohibitive costs of fully dense designs. However, in real-world inference serving, load skew across experts often leads to suboptimal device…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-05-30 Shaoyu Wang , Guangrong He , Geon-Woo Kim , Yanqi Zhou , Seo Jin Park

The Mixture of Experts (MoE) architecture has emerged as a key technique for scaling Large Language Models by activating only a subset of experts per query. Deploying MoE on consumer-grade edge hardware, however, is constrained by limited…

Artificial Intelligence · Computer Science 2026-05-05 Guoying Zhu , Meng Li , Haipeng Dai , Xuechen Liu , Weijun Wang , Keran Li , Jun xiao , Ligeng Chen , Wei Wang

Mixture-of-Experts (MoE) architectures have become the key to scaling modern LLMs, yet little is understood about how their sparse routing dynamics respond to multilingual data. In this work, we analyze expert routing patterns using…

Computation and Language · Computer Science 2026-02-19 Lucas Bandarkar , Chenyuan Yang , Mohsen Fayyaz , Junlin Hu , Nanyun Peng

Mixture-of-Experts (MoE) architectures have emerged as a key strategy for scaling large language models (LLMs) efficiently. However, current MoE systems suffer from severe load imbalance, where only a small subset of experts is consistently…

Machine Learning · Computer Science 2025-06-27 Jiajie Yang