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NVIDIA
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Add nvfp4_act_headroom activation calibration for NVFP4
- #2028
#2028
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Aug 3, 2026
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Add nvfp4_act_headroom activation calibration for NVFP4
#2028
cjluo-nv
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main
NVIDIA/Model-Optimizer:main
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chenjiel/nvfp4-act-headroom
NVIDIA/Model-Optimizer:chenjiel/nvfp4-act-headroom
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Commits on Jul 29, 2026
Add nvfp4_act_headroom activation calibration for NVFP4
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Address review: no-clipping invariant, calibrator restore, recipe docs
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Expose shared_states and sync_expert_weight_amax on nvfp4_act_headroom
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Note that the percentile bin representative is deliberately fixed
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Commits on Jul 30, 2026
Restore the configurable calibrated-range top instead of forcing the observed max
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Show all three nvfp4_act_headroom knobs in the shipped recipe
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Calibrate SequentialQuantizer activation leaves; fix the recipe license year
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Reject SequentialQuantizer activations instead of calibrating their leaves
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Select the weight-scale algorithm independently of the activation policy
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Commits on Jul 31, 2026
Merge branch 'main' into chenjiel/nvfp4-act-headroom
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Commits on Aug 3, 2026
Merge branch 'main' into chenjiel/nvfp4-act-headroom
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Update CHANGELOG.rst
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