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TerraceMoE: A Cost Model for Hierarchical MoE All-to-All Communication

Xue, Weicheng et al.
arXiv (OAI Expanded) · Papers
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and-cluster-computingdistributedparallel
Hierarchical two-hop dispatch can reduce slow-fabric traffic in expert-parallel Mixture-of-Experts training, but it adds a second collective and an arrival-side operator chain. We present a cost model for screening that trade at the communication-call level, bounded by validation gates that withdraw
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