Microsoft CEO Satya Nadella on Thursday tweeted a video of his company’s first deployed massive AI system — or AI “factory” as Nvidia likes to call them. He promised this is the “first of many” such Nvidia AI factories that will be deployed across Microsoft Azure’s global data centers to run OpenAI workloads.

Each system is a cluster of more than 4,600 Nvidia GB300s rack computers sporting the much-in-demand Blackwell Ultra GPU chip and connected via Nvidia’s super-fast networking tech called InfiniBand. (Besides AI chips, Nvidia CEO Jensen Huang also had the foresight to corner the market on InfiniBand when his company acquired Mellanox for $6.9 billion in 2019.)

Microsoft promises that it will be deploying “hundreds of thousands of Blackwell Ultra GPUs” as it rolls out these system

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