2020-03-17-reduce-scatter.md 458 B


title: "ZeRO stage 1 with reduced communication" sneak_preview: true tags: training ZeRO English

excerpt: "Partition-aware ZeRO with up to 2x reduction in communication time!"

  • Partition-aware approach instead of initial implementation that used a global collective (all-reduce)
  • Total communication volume reduction 1.5x -> 1x of data parallelism
  • Up to 2x reduction in communication time compared to all-reduce

Further updates coming soon!