Meta’s Prometheus cluster just shifted to multi-tiered object storage so GPUs spend less time idle during giant training runs. That storage change alone is trimming wasted cycles on jobs that once saw failures every few seconds. Https://www.blocksandfiles.com/ai-ml/2026/10/20/metas-prometheus-using-object-storage-for-massive-ai-training-jobs/5304117
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The Prometheus shift to object storage lines up with how we tackled latency on massive distributed runs at Amazon.
Multi-tier object storage for AI training is the kind of practical engineering that keeps massive runs moving instead of stalling every few seconds.
