Meta Engineering 20261019 Inside Prometheus: Meta’s Journey to a Gigawatt-Scale Supercluster Summary
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The hard part of building a frontier-model cluster is not collecting a large number of GPUs. It is making hundreds of thousands of accelerators, spread across buildings and separated by as much as 100 kilometers, behave like one dependable machine. At that scale, network topology, firmware rollout, spare capacity, cooling, power delivery, and even the failure rate of individual signaling links all become part of model-training performance.
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