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Mixture-of-Experts (MoE) has been adopted by many leading large models to reduce computational requirements. However, frequent inter-GPU communication in MoE expert parallelism (EP) becomes a performance challenge. We observe substantial…

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

The Mixture of Experts (MoE) model becomes an important choice of large language models nowadays because of its scalability with sublinear computational complexity for training and inference. However, existing MoE models suffer from two…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-04-25 Xin Chen , Hengheng Zhang , Xiaotao Gu , Kaifeng Bi , Lingxi Xie , Qi Tian

Mixture-of-Experts models have become a dominant architecture for scaling Large Language Models by activating only a sparse subset of experts per token. However, latency-critical MoE inference faces a fundamental tension: while expert…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-02-04 Qianchao Zhu , Xucheng Ye , Yuliang Liu , Haodong Ouyang , Chengru Song

In mobile edge computing (MEC) networks, mobile users generate diverse machine learning tasks dynamically over time. These tasks are typically offloaded to the nearest available edge server, by considering communication and computational…

Machine Learning · Computer Science 2025-03-26 Hongbo Li , Lingjie Duan

Fine-grained, per-micro-batch load balancing is essential for efficient Mixture-of-Experts (MoE) training, yet every prior dynamic scheduling scheme pays for it with extra communication that is hard to hide. Especially on modern…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-04-22 Shuyao Qi , Haoyuan Liu , Shizhen Zhao

Diffusion language models (DLMs) enable parallel, non-autoregressive text generation, yet existing DLM mixture-of-experts (MoE) models inherit token-choice (TC) routing from autoregressive systems, leading to load imbalance and rigid…

Production LLM workloads increasingly serve discriminative tasks, such as classification, recommendation, and verification, whose answers are read from the logits of a single prefill pass with no autoregressive decoding. Serving these…

Machine Learning · Computer Science 2026-05-18 Zhaoyuan Su , Olatunji Ruwase , Karthik Ganesan , Aurick Qiao , Samyam Rajbhandari , Juncheng Yang , Yue Cheng , Yuxiong He

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

Modern RL-based post-training for large language models (LLMs) co-locate trajectory sampling and policy optimisation on the same GPU cluster, forcing the system to switch between inference and training workloads. This serial context…

Machine Learning · Computer Science 2025-08-13 Jie Xiao , Changyuan Fan , Qingnan Ren , Alfred Long , Yuchen Zhang , Rymon Yu , Eric Yang , Lynn Ai , Shaoduo Gan

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) is a neural network architecture that adds sparsely activated expert blocks to a base model, increasing the number of parameters without impacting computational costs. However, current distributed deep learning…

Machine Learning · Computer Science 2023-05-16 Siddharth Singh , Olatunji Ruwase , Ammar Ahmad Awan , Samyam Rajbhandari , Yuxiong He , Abhinav Bhatele

The Mixture of Experts (MoE) is an effective architecture for scaling large language models by leveraging sparse expert activation to balance performance and efficiency. However, under expert parallelism, MoE suffers from inference…

Machine Learning · Computer Science 2026-05-12 Shwai He , Weilin Cai , Jiayi Huang , Ang Li

Mixture-of-Experts (MoE) has become a practical architecture for scaling LLM capacity while keeping per-token compute modest, but deploying MoE models on a single, memory-limited GPU remains difficult because expert weights dominate the HBM…

Performance · Computer Science 2026-02-09 Kexin Chu , Dawei Xiang , Zixu Shen , Yiwei Yang , Zecheng Liu , Wei Zhang

Large Language Models (LLMs) are increasingly deployed as Internet/Web services (LLM-as-a-Service) with strict latency Service-Level Objectives (SLOs) under tight GPU memory budgets. Mixture-of-Experts (MoE) models improve quality and…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-04-10 Yuning Zhang , Grant Pinkert , Nan Yang , Yanli Li , Dong Yuan

Training large deep learning models requires parallelization techniques to scale. In existing methods such as Data Parallelism or ZeRO-DP, micro-batches of data are processed in parallel, which creates two drawbacks: the total memory…

Machine Learning · Computer Science 2024-03-15 Louis Fournier , Edouard Oyallon

We present context parallelism for long-context large language model inference, which achieves near-linear scaling for long-context prefill latency with up to 128 H100 GPUs across 16 nodes. Particularly, our method achieves 1M context…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-04-22 Amy Yang , Jingyi Yang , Aya Ibrahim , Xinfeng Xie , Bangsheng Tang , Grigory Sizov , Jeremy Reizenstein , Jongsoo Park , Jianyu Huang

Large language models like GPT-4 are resource-intensive, but recent advancements suggest that smaller, specialized experts can outperform the monolithic models on specific tasks. The Collaboration-of-Experts (CoE) approach integrates…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-04-11 Jiashun Suo , Xiaojian Liao , Limin Xiao , Li Ruan , Jinquan Wang , Xiao Su , Zhisheng Huo

Large language models (LLMs) have emerged due to their capability to generate high-quality content across diverse contexts. To reduce their explosively increasing demands for computing resources, a mixture of experts (MoE) has emerged. The…

Hardware Architecture · Computer Science 2025-11-04 Sungmin Yun , Kwanhee Kyung , Juhwan Cho , Jaewan Choi , Jongmin Kim , Byeongho Kim , Sukhan Lee , Kyomin Sohn , Jung Ho Ahn

Current inference systems for Mixture-of-Experts (MoE) models primarily employ static parallelization strategies. However, these static approaches cannot consistently achieve optimal performance across different inference scenarios, as they…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-08-28 Haoran Lin , Xianzhi Yu , Kang Zhao , Han Bao , Zongyuan Zhan , Ting Hu , Wulong Liu , Zekun Yin , Xin Li , Weiguo Liu

The expansion of large language models is increasingly limited by the constrained memory capacity of modern GPUs. To mitigate this, Mixture-of-Experts (MoE) architectures activate only a small portion of parameters during inference,…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-10-31 Zixu Shen , Kexin Chu , Yifan Zhang , Dawei Xiang , Runxin Wu , Wei Zhang