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Subnormal floating-point numbers remain a real performance cost on Intel processors, but not on AMD or ARM processors.

Drawn from what Daniel Lemire said

Subjectssemiconductorssoftware performance
What these subjects mean

semiconductors The chips and the companies that make them: NVIDIA, TSMC, ASML, and what a fab can and cannot do.

software performance Speed as a mark of quality: bloat, boot times, and software that got slower on hardware that got faster.

What Daniel Lemire actually said

  1. Daniel Lemire Computer science professor who works on fast data processing
    Thus it appears that on the latest AMD and ARM processors subnormals might not be a concern. But they remain very much a performance issue under Intel processors.

    ↗Subnormal floating-point numbers are expensive… on Intel processorslemire.me

    15 Sept 2026

Added to korrents 20 Sept 2026 · How quotes work · Something wrong? Tell us

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