Author

Jakob Krebs

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Preprint Oct 2026

Ofan: Optimal Load Balancing for AI Training

The extreme collective completion time (CCT) demands of AI workloads challenge existing packet spraying algorithms, which can have trouble efficiently load-balancing workloads that are sent at full line rates. We trace this to a structural cause: on a fat tree, once a packet picks its upward path, the downward path to...

Sarah McClure, E. Cohen, Jakob Krebs et al. · 0 citations

Jul 2026

MoX: Efficient MoE Routing on Direct-Connect Topologies

This work shows that efficient offline-optimized routing enables efficient MoE training and inference on direct-connect topologies without the need for MoE traffic matrix or dynamic topology reconfiguration.

Ori Cohen, Jakob Krebs, Daniel Amir et al. · arXiv.org · 0 citations