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Mixture of experts (MoE) models achieve state-of-the-art results in language modeling but suffer from inefficient hardware utilization due to imbalanced token routing and communication overhead. While prior work has focused on optimizing…

We present MegaBlocks, a system for efficient Mixture-of-Experts (MoE) training on GPUs. Our system is motivated by the limitations of current frameworks, which restrict the dynamic routing in MoE layers to satisfy the constraints of…

Machine Learning · Computer Science 2022-11-30 Trevor Gale , Deepak Narayanan , Cliff Young , Matei Zaharia

Mixture of Experts (MoE) models enhance neural network scalability by dynamically selecting relevant experts per input token, enabling larger model sizes while maintaining manageable computation costs. However, efficient training of…

The training of large-scale Mixture of Experts (MoE) models faces a critical memory bottleneck due to severe load imbalance caused by dynamic token routing. This imbalance leads to memory overflow on GPUs with limited capacity, constraining…

Expert Parallelism (EP) permits Mixture of Experts (MoE) models to scale beyond a single GPU. To address load imbalance across GPUs in EP, existing approaches aim to balance the number of tokens each GPU processes. Surprisingly, we find…

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

The mixture-of-experts (MoE) architecture scales model size with sublinear computational increase but suffers from memory-intensive inference due to KV caches and sparse expert activation. Recent disaggregated expert parallelism (DEP)…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-12-29 Xinglin Pan , Shaohuai Shi , Wenxiang Lin , Yuxin Wang , Zhenheng Tang , Wei Wang , Xiaowen Chu

Sparse Mixture-of-Experts (MoE) models can outperform dense large language models at similar computation by activating only a small set of experts per token. However, stacking many expert modules introduces substantial parameter memory,…

Artificial Intelligence · Computer Science 2026-04-03 Xin He , Shunkang Zhang , Kaijie Tang , Shaohuai Shi , Yuxin Wang , Zihao Zeng , Zhenheng Tang , Xiaowen Chu , Haiyan Yin , Ivor W. Tsang , Yew Soon Ong

Mixture-of-Experts (MoE) has emerged as a practical approach to scale up parameters for the Transformer model to achieve better generalization while maintaining a sub-linear increase in computation overhead. Current MoE models are mainly…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-04-03 Shuqing Luo , Jie Peng , Pingzhi Li , Hanrui Wang , Tianlong Chen

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

In order to satisfy timing constraints, modern real-time applications require massively parallel accelerators such as General Purpose Graphic Processing Units (GPGPUs). Generation after generation, the number of computing clusters made…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-05-24 Houssam-Eddine Zahaf , Ignacio Sanudo Olmedo , Jayati Singh , Nicola Capodieci , Sebastien Faucou

In multi-GPU Mixture-of-Experts (MoE) network, experts are distributed across different GPUs, which creates load imbalance as each expert processes different number of tokens. Recent works improve MoE inference load balance by dynamically…

Machine Learning · Computer Science 2025-06-10 Haiyue Ma , Zhixu Du , Yiran Chen

Large Language Models (LLMs) with the Mixture-of-Experts (MoE) architectures have shown promising performance on various tasks. However, due to the huge model sizes, running them in resource-constrained environments where the GPU memory is…

Machine Learning · Computer Science 2025-05-02 Keisuke Kamahori , Tian Tang , Yile Gu , Kan Zhu , Baris Kasikci

Current approaches to scheduling workloads on heterogeneous systems with specialized accelerators often rely on manual partitioning, offloading tasks with specific compute patterns to accelerators. This method requires extensive…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-02-12 Zhenyu Bai , Dan Wu , Pranav Dangi , Dhananjaya Wijerathne , Venkata Pavan Kumar Miriyala , Tulika Mitra

The deployment of mixture-of-experts (MoE) large language models (LLMs) presents significant challenges due to their high memory demands. These challenges become even more pronounced in multi-tenant environments, where shared resources must…

Machine Learning · Computer Science 2025-05-13 HamidReza Imani , Jiaxin Peng , Peiman Mohseni , Abdolah Amirany , Tarek El-Ghazawi

With the widespread adoption of Mixture-of-Experts (MoE) models, there is a growing demand for efficient inference on memory-constrained devices. While offloading expert parameters to CPU memory and loading activated experts on demand has…

Machine Learning · Computer Science 2025-05-13 Yuxin Zhou , Zheng Li , Jun Zhang , Jue Wang , Yiping Wang , Zhongle Xie , Ke Chen , Lidan Shou

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

Recent advancements in Mixture of Experts (MoE) models have significantly increased their parameter scale as well as model performance. Extensive offloading techniques have been proposed to address the GPU memory limitations of MoE…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-11-03 Zhibin Wang , Zhonghui Zhang , Yuhang Zhou , Zibo Wang , Mo Zhou , Peng Jiang , Weilin Cai , Chengying Huan , Rong Gu , Sheng Zhong , Chen Tian

Growing deployment of power and energy efficient throughput accelerators (GPU) in data centers demands enhancement of power-performance co-optimization capabilities of GPUs. Realization of exascale computing using accelerators requires…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-11-06 Nilanjan Goswami , Amer Qouneh , Chao Li , Tao Li

GPUs are vastly underutilized, even when running resource-intensive AI applications, as GPU kernels within each job have diverse resource profiles that may saturate some parts of a device while often leaving other parts idle. Colocating…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-02-17 Paul Elvinger , Foteini Strati , Natalie Enright Jerger , Ana Klimovic