Grace Blackwell needs a new scheduler: 27% more usable GPUs from the same racks

Not all high-speed interconnects are created equal, and using the wrong one can be quite costly: running the same distributed training job over InfiniBand rather than NVLink can degrade performance by

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1. 2026-10-29 23:45
   Hacker News Grace Blackwell needs a new scheduler: 27% more usable GPUs from the same racks

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