Never mind Sam Altman's Stargate, which is just beginning to open its portal to distant AI-fueled worlds: Amazon's competing mountain of AI compute power is already up and running.

Amazon Web Services today announced that Project Rainier, its Stargate-rivaling AI "UltraCluster", is now up and running , with "nearly half a million" Trainium2 chips serving the massive machine across multiple datacenters. Just how many datacenters and how much compute power Rainier actually offers wasn't shared, but AWS assured the public in its press release that the machine is "one of the world's largest AI compute clusters," and it came online in record time.

"Project Rainier ... is now fully operational, less than one year after it was first announced," AWS said – and it's not stopping at that half-a-mi

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