[NPU] Update quantization&CI documentation (#21100)
Co-authored-by: Tamir Baydasov <41994229+TamirBaydasov@users.noreply.github.com>
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Артем Савкин
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Tamir Baydasov
Tamir Baydasov
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# Quantization on Ascend
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To load already quantized models, simply load the model weights and config. Again, if the model has been quantized offline, there's no need to add `--quantization` argument when starting the engine. The quantization method will be automatically parsed from the downloaded `quant_model_description.json` or `config.json` config.
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SGLang support **mix-bits** quantization (independently defines and loads each layer depending on the type of quantification specified in the `quant_model_description'.json`). [Advanced mix-bits for MoE](https://github.com/sgl-project/sglang/pull/17361) in progress, will add independent quantization determination for the w13 (up-gate) and w2 (down) layers).
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[ModelSlim on Ascend support](https://github.com/sgl-project/sglang/pull/14504)
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| Quantization scheme | Layer type | A2 Supported | A3 Supported | A5 Supported | Diffusion models |
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|-----------------------------------------------------------|--------------------------|:----------------------------------------:|:----------------------------------------:|:------------------------------------------:|:------------------------------------------:|
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| W4A4 dynamic | Linear | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** | **<span style="color: green;">√</span>** |
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| W8A8 static | Linear | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** | **<span style="color: green;">√</span>** |
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| W8A8 dynamic | Linear | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** | **<span style="color: green;">√</span>** |
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| [MXFP8](https://github.com/sgl-project/sglang/pull/20922) | Linear | **<span style="color: red;">x</span>** | **<span style="color: red;">x</span>** | **<span style="color: blue;">WIP</span>** | **<span style="color: blue;">WIP</span>** |
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| W4A4 dynamic | MoE | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** | **<span style="color: red;">x</span>** |
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| W4A8 dynamic | MoE | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** | **<span style="color: red;">x</span>** |
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| W8A8 dynamic | MoE | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** | **<span style="color: red;">x</span>** |
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| [MXFP8](https://github.com/sgl-project/sglang/pull/20922) | MoE | **<span style="color: red;">x</span>** | **<span style="color: red;">x</span>** | **<span style="color: blue;">WIP</span>** | **<span style="color: red;">x</span>** |
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[AWQ on Ascend support](https://github.com/sgl-project/sglang/pull/10158):
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| Quantization scheme | Layer type | A2 Supported | A3 Supported | A5 Supported |
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|--------------------------------|--------------------------|:----------------------------------------:|:----------------------------------------:|:------------------------------------------:|
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| W4A16 | Linear | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** |
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| W8A16 | Linear | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** |
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| W4A16 | MoE | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** |
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GPTQ on Ascend support
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| Quantization scheme | Layer type | A2 Supported | A3 Supported | A5 Supported |
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|----------------------------------------------------------------------------|--------------------------|:----------------------------------------:|:----------------------------------------:|:-----------------------------------------:|
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| [W4A16](https://github.com/sgl-project/sglang/pull/15203) | Linear | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** |
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| [W8A16](https://github.com/sgl-project/sglang/pull/15203) | Linear | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** |
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| [W4A16 MOE](https://github.com/sgl-project/sglang/pull/16364) | MoE | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** |
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| [W8A16 MOE](https://github.com/sgl-project/sglang/pull/16364) | MoE | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** |
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[Auto-round on Ascend support](https://github.com/sgl-project/sglang/pull/16699)
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| Quantization scheme | Layer type | A2 Supported | A3 Supported | A5 Supported |
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|--------------------------------|--------------------------|:----------------------------------------:|:----------------------------------------:|:-----------------------------------------:|
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| W4A16 | Linear | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** |
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| W8A16 | Linear | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** |
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| W4A16 | MoE | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** |
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| W8A16 | MoE | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** |
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Compressed-tensors (LLM Compressor) on Ascend support:
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| Quantization scheme | Layer type | A2 Supported | A3 Supported | A5 Supported |
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|-----------------------------------------------------------------------------------------------|--------------------------|:----------------------------------------:|:----------------------------------------:|:-----------------------------------------:|
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| [W8A8 dynamic](https://github.com/sgl-project/sglang/pull/14504) | Linear | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** |
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| [W4A8 dynamic with/without activation clip](https://github.com/sgl-project/sglang/pull/14736) | MoE | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** |
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| [W4A16 MOE](https://github.com/sgl-project/sglang/pull/12759) | MoE | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** |
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| [W8A8 dynamic](https://github.com/sgl-project/sglang/pull/14504) | MoE | **<span style="color: green;">√</span>** | **<span style="color: green;">√</span>** | **<span style="color: yellow;">TBD</span>** |
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[GGUF on Ascend support](https://github.com/sgl-project/sglang/pull/17883)
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in progress
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