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Qualcomm / Layer norm and RMS norm

RMSNorm, int8 and int16 on the NPU

Qualcomm QCS6490, Dragonwing RB3 Gen 2

Fail · Real chip

Recorded result

Fail on per value correctness, as recorded. Latency and peak memory pass. int8 p50 402 us, int16 p50 446 us

Recorded 2026-09-30

Execution conditions

  • Run through Qualcomm AI Hub, QNN SDK 2.50.0, Hexagon v68, OS build 1.6
  • int8, 6 of 131,072 values outside tolerance. int16, 203 of 131,072
  • Peak inference memory 2.33 MB int8, 4.35 MB int16
  • Signed card with the fail recorded, certificate CLV-CDE43-651D0-CE5F1-3E721

Historical result; a new workload requires compatibility checking and fresh Verify.

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Evidence summary imported from the local registry on October 2, 2026. A summary is not a newly issued proof pack.