Quark ONNX Quantization Example#

This folder contains an example of quantizing a resnet152 model using the ONNX quantizer of Quark. The example has the following parts:

Pip requirements
Prepare model
Prepare data
Quantization without CLE
Quantization with CLE
Evaluation

Pip requirements#

Install the necessary python packages:

python -m pip install -r ../utils/requirements.txt

Prepare model#

Export onnx model from resnet152 torch model:

mkdir models && python ../utils/export_onnx.py resnet152

Prepare data#

ILSVRC 2012, commonly known as ‘ImageNet’. This dataset provides access to ImageNet (ILSVRC) 2012 which is the most commonly used subset of ImageNet. This dataset spans 1000 object classes and contains 50,000 validation images.

If you already have an ImageNet datasets, you can directly use your dataset path.

To prepare the test data, please check the download section of the main website: https://huggingface.co/datasets/imagenet-1k/tree/main/data. You need to register and download val_images.tar.gz.

Then, create the validation dataset and calibration dataset:

mkdir val_data && tar -xzf val_images.tar.gz -C val_data
python ../utils/prepare_data.py val_data calib_data

The storage format of the val_data of the ImageNet dataset organized as follows:

val_data
- n01440764
  - ILSVRC2012_val_00000293.JPEG
  - ILSVRC2012_val_00002138.JPEG
  - …
- n01443537
  - ILSVRC2012_val_00000236.JPEG
  - ILSVRC2012_val_00000262.JPEG
  - …
- …
- n15075141
  - ILSVRC2012_val_00001079.JPEG
  - ILSVRC2012_val_00002663.JPEG
  - …

The storage format of the calib_data of the ImageNet dataset organized as follows:

calib_data
- n01440764
  - ILSVRC2012_val_00000293.JPEG
- n01443537
  - ILSVRC2012_val_00000236.JPEG
- …
- n15075141
  - ILSVRC2012_val_00001079.JPEG

Quantization without CLE#

The quantizer takes the float model and produce a quantized model without CLE.

python quantize_model.py --model_name resnet152 \
                         --input_model_path models/resnet152.onnx \
                         --output_model_path models/resnet152_quantized.onnx \
                         --calibration_dataset_path calib_data

This command will generate a quantized model under the models folder, which was quantized by S8S8_AAWS configuration (Int8 symmetric quantization) without CLE.

Quantization with CLE#

The quantizer takes the float model and produce a quantized model with CLE.

python quantize_model.py --model_name resnet152 \
                         --input_model_path models/resnet152.onnx \
                         --output_model_path models/resnet152_cle_quantized.onnx \
                         --include_cle \
                         --calibration_dataset_path calib_data

This command will generate a quantized model under the models folder, which was quantized by S8S8_AAWS configuration (Int8 symmetric quantization) with CLE.

Evaluation#

Test the accuracy of the float model on ImageNet val dataset:

python ../utils/onnx_validate.py val_data --model-name resnet152 --batch-size 1 --onnx-input models/resnet152.onnx

Test the accuracy of the quantized model without CLE on ImageNet val dataset:

python ../utils/onnx_validate.py val_data --model-name resnet152 --batch-size 1 --onnx-input models/resnet152_quantized.onnx

Test the accuracy of the quantized model with CLE on ImageNet val dataset:

python ../utils/onnx_validate.py val_data --model-name resnet152 --batch-size 1 --onnx-input models/resnet152_cle_quantized.onnx

	Float Model	Quantized Model without CLE	Quantized Model with CLE
Model Size	232 MB	59 MB	59 MB
P rec@1	83.456 %	70.042 %	79.664 %
P rec@5	96.580 %	88.502 %	94.854 %

Quark ONNX Quantization Example

Contents