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Why I joined OpenAI

Brendan Gregg · 6 Feb 2026

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  1. The staggering and fast-growing cost of AI datacenters is a call for performance engineering like no other in history; it's not just about saving costs - it's about saving the planet.
  2. I've realized that performance engineering as we know it may not be enough - I'm thinking of new engineering methods so that we can find bigger optimizations than we have before, and find them faster.
  3. given those technologies are proven for finding datacenter performance wins, it seems likely

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