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Home/Glossary/Eight-bit integer quantization

Quantization

Eight-bit integer quantization

What it is

Eight-bit integer quantization represents selected tensors with integer values and scale factors. It is established for weights and can include activations when calibration and kernels support them.

Why it moves cost and latency

Integer storage reduces memory traffic while retaining more quantization levels than narrower integer formats. Activation quantization adds compute opportunities but makes range selection and outliers more important.

What it looks like in practice

Quantizers choose tensor, channel, or group scales from weights and representative activations. Teams verify kernel coverage and quality because unsupported operations may retain wider precision.

Related terms

  • FP8 quantization->
  • KV cache quantization->
  • Calibration data->
  • Outlier channels->
  • FP8 versus eight-bit integer quantization->
  • Weight-only versus weight-activation quantization->

Questions this definition answers

What does Eight-bit integer quantization mean in inference serving?

Eight-bit integer quantization represents selected tensors with integer values and scale factors. It is established for weights and can include activations when calibration and kernels support them. Quantizers choose tensor, channel, or group scales from weights and representative activations. Teams verify kernel coverage and quality because unsupported operations may retain wider precision.

Why can Eight-bit integer quantization move cost or latency?

Integer storage reduces memory traffic while retaining more quantization levels than narrower integer formats. Activation quantization adds compute opportunities but makes range selection and outliers more important.

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