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GRACE-MoE: Grouping and Replication with Locality-Aware Routing for Efficient Distributed MoE Inference

3 Pith papers cite this work. Polarity classification is still indexing.

3 Pith papers citing it
abstract

Sparse Mixture of Experts (SMoE) enables scalable parameter growth in large language models (LLMs) by selectively activating a subset of experts, and its large parameter count necessitates distributed deployment for inference. However, distributed inference faces a critical dilemma: although communication overhead constitutes the primary bottleneck, reducing it often exacerbates computational load imbalance, leading to resource waste. In this paper, we present GRACE-MoE, which stands for Grouping and Replication with Locality-Aware Routing for SMoE inference. GRACE-MoE is a lossless co-optimization framework that integrates expert grouping to reduce communication and dynamic replication to correct load skew, together with locality-aware routing to resolve replica selection. To underpin this coordinated optimization in multi-node settings, GRACE-MoE adopts a hierarchical sparse communication design that reduces cross-node traffic while implicitly aligning execution across nodes, thereby mitigating synchronization overhead. Experiments on diverse models and multi-node, multi-GPU environments demonstrate that GRACE-MoE efficiently reduces end-to-end inference latency, achieving up to 4.66x speedup over existing systems, and the code will be released upon acceptance.

citation-role summary

other 1

citation-polarity summary

fields

cs.LG 2 cs.CL 1

years

2026 3

verdicts

UNVERDICTED 3

roles

other 1

polarities

unclear 1

representative citing papers

Hierarchical Mixture-of-Experts with Two-Stage Optimization

cs.LG · 2026-05-08 · unverdicted · novelty 6.0

Hi-MoE uses two-level hierarchical routing objectives to enforce group-level balance while promoting within-group specialization, yielding better perplexity and expert utilization than prior MoE baselines in NLP and vision tasks.

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