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Hyun-Eem Choi

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Preprint Sep 2026

Accurate Simulation of Distributed Training Jobs with Network Contention Modeling

MoSim is introduced, a GPU-cluster simulator that models DT job execution under dynamic network contention, which reduces simulation error for average JCT by up to 3.28%, and reduces input construction overhead by 44.6% by avoiding real-GPU profiling.

Yeonho Yoo, Hyunho Lee, Hyun-Eem Choi et al. · 0 citations

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