Source
Closed-Loop Cooling Explained: The Plumbing Behind Meta’s AI
Meta is implementing closed-loop liquid cooling systems to efficiently manage the high heat generated by AI hardware. This technology recirculates a water-glycol mixture to cool servers without the need for constant water replacement.
Why it matters
This approach allows Meta to increase computing power within existing data center space while significantly reducing water consumption. It ensures AI infrastructure can scale sustainably as hardware becomes more heat-intensive.
The details
- Air-Assisted Liquid Cooling is used in facilities without existing liquid infrastructure. - Closed-loop systems use less annual water than a few full-service restaurants. - Liquid cooling enables higher GPU density per rack than air cooling. - A physics-based simulator was used to safely train reinforcement learning models.
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