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Home/Glossary/AWQ

Quantization

AWQ

What it is

Activation-aware weight quantization uses activation statistics to identify weight channels that need extra protection. It applies calibrated scaling so salient channels incur less quantization error.

Why it moves cost and latency

Activation evidence can preserve important weight contributions better than magnitude-only choices. The result still depends on calibration coverage, packing, kernels, and the target workload.

What it looks like in practice

A quantizer gathers representative activations, searches channel scales, and packs the resulting low-precision weights. Serving kernels must implement the same grouping and scaling layout.

Related terms

  • Channelwise quantization->
  • Calibration data->
  • Outlier channels->
  • Four-bit weight-only quantization->
  • GPTQ->

Questions this definition answers

What does AWQ mean in inference serving?

Activation-aware weight quantization uses activation statistics to identify weight channels that need extra protection. It applies calibrated scaling so salient channels incur less quantization error. A quantizer gathers representative activations, searches channel scales, and packs the resulting low-precision weights. Serving kernels must implement the same grouping and scaling layout.

Why can AWQ move cost or latency?

Activation evidence can preserve important weight contributions better than magnitude-only choices. The result still depends on calibration coverage, packing, kernels, and the target workload.

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