arXiv AI By Wenhui Lv, Yunming Liao, Hongli Xu, Yang Xu, Junhao Cheng

Efficient CPU-GPU collaborative MoE inference via Adaptive Expert Assignment

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arXiv:2610. 23006v1 Announce Type: new Abstract: Mixture-of-Experts (MoE) models reduce inference computation through sparse expert activation, but their large expert memory footprint often exceeds GPU capacity, making expert offloading necessary for memory-constrained inference.

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arXiv Machine Learning
Oct 2

Efficient Expert-Parallel Communication on PCIe-Connected Consumer GPUs

ThunderEP is a new communication design for expert parallelism on PCIe-connected consumer GPUs that eliminates relay hops, uses DMA engines to avoid GPU compute contention, and reduces CPU polling overhead. Integrated into vLLM, it outperforms NCCL on RTX 4090 and RTX 5090 GPUs, delivering average speedups of 2.00× for dispatch, 1.53× for combine, and up to 1.66× end‑to‑end over existing MoE inference frameworks.

By Jaehwan Lee, Sangmin Lee, Chaewon Kim, Junsik Shin, Jaejin Lee