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Design the numerics policy for a fleet that spans Hopper and Blackwell: formats per generation, fallbacks, and how you validate them.

Even a format with the same name differs between the two generations: block-scaled FP8 uses FP32 scales on Hopper and power-of-two scales on Blackwell. The answer designs formats, fallbacks and gates so a user routed to either pool gets a model the team has actually tested.

Updated Oct 2026 · Worked answers on inference mechanisms, with calculations, implementation details, and follow-up questions.

Even a format with the same name differs between the two generations: block-scaled FP8 uses FP32 scales on Hopper and power-of-two scales on Blackwell. The answer designs formats, fallbacks and gates so a user routed to either pool gets a model the team has actually tested.

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