DyRep: Bootstrapping Training with Dynamic Re-parameterization

Official implementation for paper "DyRep: Bootstrapping Training with Dynamic Re-parameterization", CVPR 2022.

By Tao Huang, Shan You, Bohan Zhang, Yuxuan Du, Fei Wang, Chen Qian, Chang Xu.

🔥 Training code is available here.

Updates

March 11, 2022

The code is available at image_classification_sota.

Getting started

Clone training code

git clone https://github.com/hunto/DyRep.git --recurse-submodules
cd DyRep/image_classification_sota

Then prepare your environment and datasets following the README.md in image_classification_sota.

Implementation of DyRep

The core concept of DyRep is in lib/models/utils/dyrep.py.

Reproducing our results

CIFAR

Dataset	Model	Config	Paper	This repo	Log
CIFAR-10	VGG-16	config	95.22%	95.37%	log
CIFAR-100	VGG-16	config	74.37%	74.60%	log

• CIFAR-10

  sh tools/dist_train.sh 1 configs/strategies/DyRep/cifar.yaml nas_model --model-config configs/models/VGG/vgg16_cifar10.yaml --dyrep --experiment dyrep_cifar10_vgg16
  
• CIFAR-100

  sh tools/dist_train.sh 1 configs/strategies/DyRep/cifar.yaml nas_model --model-config configs/models/VGG/vgg16_cifar100.yaml --dyrep --dataset cifar100 --experiment dyrep_cifar100_vgg16
  

ImageNet

Dataset	Model	Config	Paper	This repo	Log
ImageNet	ResNet-18	config	71.58%	71.66%	log
ImageNet	ResNet-50	config	77.08%	77.22%	log

• ResNets

  sh tools/dist_train.sh 8 configs/strategies/DyRep/resnet.yaml resnet18 --dyrep --experiment dyrep_imagenet_res18
  

• MobileNetV1

  sh tools/dist_train.sh 8 configs/strategies/DyRep/mbv1.yaml mobilenet_v1 --dyrep --experiment dyrep_imagenet_mbv1
  

• RepVGG

  • DyRep-A2

    sh tools/dist_train.sh 8 configs/strategies/DyRep/repvgg_baseline.yaml timm_repvgg_a2 --dyrep --dyrep_recal_bn_every_epoch --experiment dyrep_imagenet_repvgg_a2
    
  • DyRep-B2g4 and DyRep-B3

    sh tools/dist_train.sh 8 configs/strategies/DyRep/repvgg_strong.yaml timm_repvgg_b2g4 --dyrep --dyrep_recal_bn_every_epoch --experiment dyrep_imagenet_repvgg_b2g4
    

Deploying the Trained DyRep Models to Inference Models

sh tools/dist_run.sh tools/convert.py ${GPUS} ${CONFIG} ${MODEL} --resume ${CHECKPOINT}

For example, if you want to deploy the trained ResNet-50 model with the best checkpoint, run

sh tools/dist_run.sh tools/convert.py 8 configs/strategies/DyRep/resnet.yaml resnet50 --dyrep --resume experiments/dyrep_imagenet_res50/best.pth.tar

Then it will run test before and after deployment to ensure the accuracy will not drop.

The final weights of the inference model will be saved in experiments/dyrep_imagenet_res50/convert/model.ckpt.

License

This project is released under the Apache 2.0 license.

Citation

@InProceedings{Huang_2022_CVPR,
    author    = {Huang, Tao and You, Shan and Zhang, Bohan and Du, Yuxuan and Wang, Fei and Qian, Chen and Xu, Chang},
    title     = {DyRep: Bootstrapping Training With Dynamic Re-Parameterization},
    booktitle = {Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)},
    month     = {June},
    year      = {2022},
    pages     = {588-597}
}