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SP-Allreduce: Symmetric Tree Schedules for Tori and Beyond

Cherniavskii, Mikhail et al.
arXiv (All) · Papers
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and-cluster-computingdistributedparallel
Allreduce is a fundamental communication primitive in large-scale distributed training, and torus interconnects remain widely deployed in high-performance systems. We introduce SP-allreduce, a new allreduce algorithm for $d$-dimensional tori that exploits the symmetry of the topology and routes only
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