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Merge branch 'hepj-test' into 'main' 

增加VIT模型代码

See merge request dcutoolkit/deeplearing/dlexamples_new!39
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PyTorch/NLP/Vision_Transformer/CODE_OF_CONDUCT.md 0 → 100644
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# Code of Conduct
## Our Pledge
In the interest of fostering an open and welcoming environment, we as
contributors and maintainers pledge to make participation in our project and
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## Our Standards
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* Using welcoming and inclusive language
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## Attribution
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PyTorch/NLP/Vision_Transformer/CONTRIBUTING.md 0 → 100644
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# Contributing to mae
We want to make contributing to this project as easy and transparent as
possible.
## Pull Requests
We actively welcome your pull requests.
1. Fork the repo and create your branch from `main`.
2. If you've added code that should be tested, add tests.
3. If you've changed APIs, update the documentation.
4. Ensure the test suite passes.
5. Make sure your code lints.
6. If you haven't already, complete the Contributor License Agreement ("CLA").
## Contributor License Agreement ("CLA")
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Complete your CLA here: <https://code.facebook.com/cla>
## Issues
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## License
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under the LICENSE file in the root directory of this source tree.
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PyTorch/NLP/Vision_Transformer/FINETUNE.md 0 → 100644
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## Fine-tuning Pre-trained MAE for Classification
### Evaluation
As a sanity check, run evaluation using our ImageNet **fine-tuned** models:
<table><tbody>
<!-- START TABLE -->
<!-- TABLE HEADER -->
<th valign="bottom"></th>
<th valign="bottom">ViT-Base</th>
<th valign="bottom">ViT-Large</th>
<th valign="bottom">ViT-Huge</th>
<!-- TABLE BODY -->
<tr><td align="left">fine-tuned checkpoint</td>
<td align="center"><a href="https://dl.fbaipublicfiles.com/mae/finetune/mae_finetuned_vit_base.pth">download</a></td>
<td align="center"><a href="https://dl.fbaipublicfiles.com/mae/finetune/mae_finetuned_vit_large.pth">download</a></td>
<td align="center"><a href="https://dl.fbaipublicfiles.com/mae/finetune/mae_finetuned_vit_huge.pth">download</a></td>
</tr>
<tr><td align="left">md5</td>
<td align="center"><tt>1b25e9</tt></td>
<td align="center"><tt>51f550</tt></td>
<td align="center"><tt>2541f2</tt></td>
</tr>
<tr><td align="left">reference ImageNet accuracy</td>
<td align="center">83.664</td>
<td align="center">85.952</td>
<td align="center">86.928</td>
</tr>
</tbody></table>
Evaluate ViT-Base in a single GPU (`${IMAGENET_DIR}` is a directory containing `{train, val}` sets of ImageNet):
```
python main_finetune.py --eval --resume mae_finetuned_vit_base.pth --model vit_base_patch16 --batch_size 16 --data_path ${IMAGENET_DIR}
```
This should give:
```
* Acc@1 83.664 Acc@5 96.530 loss 0.731
```
Evaluate ViT-Large:
```
python main_finetune.py --eval --resume mae_finetuned_vit_large.pth --model vit_large_patch16 --batch_size 16 --data_path ${IMAGENET_DIR}
```
This should give:
```
* Acc@1 85.952 Acc@5 97.570 loss 0.646
```
Evaluate ViT-Huge:
```
python main_finetune.py --eval --resume mae_finetuned_vit_huge.pth --model vit_huge_patch14 --batch_size 16 --data_path ${IMAGENET_DIR}
```
This should give:
```
* Acc@1 86.928 Acc@5 98.088 loss 0.584
```
### Fine-tuning
Get our pre-trained checkpoints from [here](https://github.com/fairinternal/mae/#pre-trained-checkpoints).
To fine-tune with **multi-node distributed training**, run the following on 4 nodes with 8 GPUs each:
```
python submitit_finetune.py \
--job_dir ${JOB_DIR} \
--nodes 4 \
--batch_size 32 \
--model vit_base_patch16 \
--finetune ${PRETRAIN_CHKPT} \
--epochs 100 \
--blr 5e-4 --layer_decay 0.65 \
--weight_decay 0.05 --drop_path 0.1 --reprob 0.25 --mixup 0.8 --cutmix 1.0 \
--dist_eval --data_path ${IMAGENET_DIR}
```
- Install submitit (`pip install submitit`) first.
- Here the effective batch size is 32 (`batch_size` per gpu) * 4 (`nodes`) * 8 (gpus per node) = 1024.
- `blr` is the base learning rate. The actual `lr` is computed by the [linear scaling rule](https://arxiv.org/abs/1706.02677): `lr` = `blr` * effective batch size / 256.
- We have run 4 trials with different random seeds. The resutls are 83.63, 83.66, 83.52, 83.46 (mean 83.57 and std 0.08).
- Training time is ~7h11m in 32 V100 GPUs.
Script for ViT-Large:
```
python submitit_finetune.py \
--job_dir ${JOB_DIR} \
--nodes 4 --use_volta32 \
--batch_size 32 \
--model vit_large_patch16 \
--finetune ${PRETRAIN_CHKPT} \
--epochs 50 \
--blr 1e-3 --layer_decay 0.75 \
--weight_decay 0.05 --drop_path 0.2 --reprob 0.25 --mixup 0.8 --cutmix 1.0 \
--dist_eval --data_path ${IMAGENET_DIR}
```
- We have run 4 trials with different random seeds. The resutls are 85.95, 85.87, 85.76, 85.88 (mean 85.87 and std 0.07).
- Training time is ~8h52m in 32 V100 GPUs.
Script for ViT-Huge:
```
python submitit_finetune.py \
--job_dir ${JOB_DIR} \
--nodes 8 --use_volta32 \
--batch_size 16 \
--model vit_huge_patch14 \
--finetune ${PRETRAIN_CHKPT} \
--epochs 50 \
--blr 1e-3 --layer_decay 0.75 \
--weight_decay 0.05 --drop_path 0.3 --reprob 0.25 --mixup 0.8 --cutmix 1.0 \
--dist_eval --data_path ${IMAGENET_DIR}
```
- Training time is ~13h9m in 64 V100 GPUs.
To fine-tune our pre-trained ViT-Base with **single-node training**, run the following on 1 node with 8 GPUs:
```
OMP_NUM_THREADS=1 python -m torch.distributed.launch --nproc_per_node=8 main_finetune.py \
--accum_iter 4 \
--batch_size 32 \
--model vit_base_patch16 \
--finetune ${PRETRAIN_CHKPT} \
--epochs 100 \
--blr 5e-4 --layer_decay 0.65 \
--weight_decay 0.05 --drop_path 0.1 --mixup 0.8 --cutmix 1.0 --reprob 0.25 \
--dist_eval --data_path ${IMAGENET_DIR}
```
- Here the effective batch size is 32 (`batch_size` per gpu) * 4 (`accum_iter`) * 8 (gpus) = 1024. `--accum_iter 4` simulates 4 nodes.
#### Notes
- The [pre-trained models we provide](https://github.com/fairinternal/mae/#pre-trained-checkpoints) are trained with *normalized* pixels `--norm_pix_loss` (1600 epochs, Table 3 in paper). The fine-tuning hyper-parameters are slightly different from the default baseline using *unnormalized* pixels.
- The original MAE implementation was in TensorFlow+TPU with no explicit mixed precision. This re-implementation is in PyTorch+GPU with automatic mixed precision (`torch.cuda.amp`). We have observed different numerical behavior between the two platforms. In this repo, we use `--global_pool` for fine-tuning; using `--cls_token` performs similarly, but there is a chance of producing NaN when fine-tuning ViT-Huge in GPUs. We did not observe this issue in TPUs. Turning off amp could solve this issue, but is slower.
- Here we use RandErase following DeiT: `--reprob 0.25`. Its effect is smaller than random variance.
### Linear Probing
Run the following on 4 nodes with 8 GPUs each:
```
python submitit_linprobe.py \
--job_dir ${JOB_DIR} \
--nodes 4 \
--batch_size 512 \
--model vit_base_patch16 --cls_token \
--finetune ${PRETRAIN_CHKPT} \
--epochs 90 \
--blr 0.1 \
--weight_decay 0.0 \
--dist_eval --data_path ${IMAGENET_DIR}
```
- Here the effective batch size is 512 (`batch_size` per gpu) * 4 (`nodes`) * 8 (gpus per node) = 16384.
- `blr` is the base learning rate. The actual `lr` is computed by the [linear scaling rule](https://arxiv.org/abs/1706.02677): `lr` = `blr` * effective batch size / 256.
- Training time is ~2h20m for 90 epochs in 32 V100 GPUs.
- To run single-node training, follow the instruction in fine-tuning.
To train ViT-Large or ViT-Huge, set `--model vit_large_patch16` or `--model vit_huge_patch14`. It is sufficient to train 50 epochs `--epochs 50`.
This PT/GPU code produces *better* results for ViT-L/H (see the table below). This is likely caused by the system difference between TF and PT.
<table><tbody>
<!-- START TABLE -->
<!-- TABLE HEADER -->
<th valign="bottom"></th>
<th valign="bottom">ViT-Base</th>
<th valign="bottom">ViT-Large</th>
<th valign="bottom">ViT-Huge</th>
<!-- TABLE BODY -->
<tr><td align="left">paper (TF/TPU)</td>
<td align="center">68.0</td>
<td align="center">75.8</td>
<td align="center">76.6</td>
</tr>
<tr><td align="left">this repo (PT/GPU)</td>
<td align="center">67.8</td>
<td align="center">76.0</td>
<td align="center">77.2</td>
</tr>
</tbody></table>
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\ No newline at end of file
PyTorch/NLP/Vision_Transformer/PRETRAIN.md 0 → 100644
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## Pre-training MAE
To pre-train ViT-Large (recommended default) with **multi-node distributed training**, run the following on 8 nodes with 8 GPUs each:
```
python submitit_pretrain.py \
--job_dir ${JOB_DIR} \
--nodes 8 \
--use_volta32 \
--batch_size 64 \
--model mae_vit_large_patch16 \
--norm_pix_loss \
--mask_ratio 0.75 \
--epochs 800 \
--warmup_epochs 40 \
--blr 1.5e-4 --weight_decay 0.05 \
--data_path ${IMAGENET_DIR}
```
- Here the effective batch size is 64 (`batch_size` per gpu) * 8 (`nodes`) * 8 (gpus per node) = 4096. If memory or # gpus is limited, use `--accum_iter` to maintain the effective batch size, which is `batch_size` (per gpu) * `nodes` * 8 (gpus per node) * `accum_iter`.
- `blr` is the base learning rate. The actual `lr` is computed by the [linear scaling rule](https://arxiv.org/abs/1706.02677): `lr` = `blr` * effective batch size / 256.
- Here we use `--norm_pix_loss` as the target for better representation learning. To train a baseline model (e.g., for visualization), use pixel-based construction and turn off `--norm_pix_loss`.
- The exact same hyper-parameters and configs (initialization, augmentation, etc.) are used as our TF/TPU implementation. In our sanity checks, this PT/GPU re-implementation can reproduce the TF/TPU results within reasonable random variation. We get 85.5% [fine-tuning](FINETUNE.md) accuracy by pre-training ViT-Large for 800 epochs (85.4% in paper Table 1d with TF/TPU).
- Training time is ~42h in 64 V100 GPUs (800 epochs).
To train ViT-Base or ViT-Huge, set `--model mae_vit_base_patch16` or `--model mae_vit_huge_patch14`.
PyTorch/NLP/Vision_Transformer/README-origin.md 0 → 100644
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## Masked Autoencoders: A PyTorch Implementation
<p align="center">
<img src="https://user-images.githubusercontent.com/11435359/146857310-f258c86c-fde6-48e8-9cee-badd2b21bd2c.png" width="480">
</p>
This is a PyTorch/GPU re-implementation of the paper [Masked Autoencoders Are Scalable Vision Learners](https://arxiv.org/abs/2111.06377):
```
@Article{MaskedAutoencoders2021,
author = {Kaiming He and Xinlei Chen and Saining Xie and Yanghao Li and Piotr Doll{\'a}r and Ross Girshick},
journal = {arXiv:2111.06377},
title = {Masked Autoencoders Are Scalable Vision Learners},
year = {2021},
}
```
* The original implementation was in TensorFlow+TPU. This re-implementation is in PyTorch+GPU.
* This repo is a modification on the [DeiT repo](https://github.com/facebookresearch/deit). Installation and preparation follow that repo.
* This repo is based on [`timm==0.3.2`](https://github.com/rwightman/pytorch-image-models), for which a [fix](https://github.com/rwightman/pytorch-image-models/issues/420#issuecomment-776459842) is needed to work with PyTorch 1.8.1+.
### Catalog
- [x] Visualization demo
- [x] Pre-trained checkpoints + fine-tuning code
- [x] Pre-training code
### Visualization demo
Run our interactive visualization demo using [Colab notebook](https://colab.research.google.com/github/facebookresearch/mae/blob/main/demo/mae_visualize.ipynb) (no GPU needed):
<p align="center">
<img src="https://user-images.githubusercontent.com/11435359/147859292-77341c70-2ed8-4703-b153-f505dcb6f2f8.png" width="600">
</p>
### Fine-tuning with pre-trained checkpoints
The following table provides the pre-trained checkpoints used in the paper, converted from TF/TPU to PT/GPU:
<table><tbody>
<!-- START TABLE -->
<!-- TABLE HEADER -->
<th valign="bottom"></th>
<th valign="bottom">ViT-Base</th>
<th valign="bottom">ViT-Large</th>
<th valign="bottom">ViT-Huge</th>
<!-- TABLE BODY -->
<tr><td align="left">pre-trained checkpoint</td>
<td align="center"><a href="https://dl.fbaipublicfiles.com/mae/pretrain/mae_pretrain_vit_base.pth">download</a></td>
<td align="center"><a href="https://dl.fbaipublicfiles.com/mae/pretrain/mae_pretrain_vit_large.pth">download</a></td>
<td align="center"><a href="https://dl.fbaipublicfiles.com/mae/pretrain/mae_pretrain_vit_huge.pth">download</a></td>
</tr>
<tr><td align="left">md5</td>
<td align="center"><tt>8cad7c</tt></td>
<td align="center"><tt>b8b06e</tt></td>
<td align="center"><tt>9bdbb0</tt></td>
</tr>
</tbody></table>
The fine-tuning instruction is in [FINETUNE.md](FINETUNE.md).
By fine-tuning these pre-trained models, we rank #1 in these classification tasks (detailed in the paper):
<table><tbody>
<!-- START TABLE -->
<!-- TABLE HEADER -->
<th valign="bottom"></th>
<th valign="bottom">ViT-B</th>
<th valign="bottom">ViT-L</th>
<th valign="bottom">ViT-H</th>
<th valign="bottom">ViT-H<sub>448</sub></th>
<td valign="bottom" style="color:#C0C0C0">prev best</td>
<!-- TABLE BODY -->
<tr><td align="left">ImageNet-1K (no external data)</td>
<td align="center">83.6</td>
<td align="center">85.9</td>
<td align="center">86.9</td>
<td align="center"><b>87.8</b></td>
<td align="center" style="color:#C0C0C0">87.1</td>
</tr>
<td colspan="5"><font size="1"><em>following are evaluation of the same model weights (fine-tuned in original ImageNet-1K):</em></font></td>
<tr>
</tr>
<tr><td align="left">ImageNet-Corruption (error rate) </td>
<td align="center">51.7</td>
<td align="center">41.8</td>
<td align="center"><b>33.8</b></td>
<td align="center">36.8</td>
<td align="center" style="color:#C0C0C0">42.5</td>
</tr>
<tr><td align="left">ImageNet-Adversarial</td>
<td align="center">35.9</td>
<td align="center">57.1</td>
<td align="center">68.2</td>
<td align="center"><b>76.7</b></td>
<td align="center" style="color:#C0C0C0">35.8</td>
</tr>
<tr><td align="left">ImageNet-Rendition</td>
<td align="center">48.3</td>
<td align="center">59.9</td>
<td align="center">64.4</td>
<td align="center"><b>66.5</b></td>
<td align="center" style="color:#C0C0C0">48.7</td>
</tr>
<tr><td align="left">ImageNet-Sketch</td>
<td align="center">34.5</td>
<td align="center">45.3</td>
<td align="center">49.6</td>
<td align="center"><b>50.9</b></td>
<td align="center" style="color:#C0C0C0">36.0</td>
</tr>
<td colspan="5"><font size="1"><em>following are transfer learning by fine-tuning the pre-trained MAE on the target dataset:</em></font></td>
</tr>
<tr><td align="left">iNaturalists 2017</td>
<td align="center">70.5</td>
<td align="center">75.7</td>
<td align="center">79.3</td>
<td align="center"><b>83.4</b></td>
<td align="center" style="color:#C0C0C0">75.4</td>
</tr>
<tr><td align="left">iNaturalists 2018</td>
<td align="center">75.4</td>
<td align="center">80.1</td>
<td align="center">83.0</td>
<td align="center"><b>86.8</b></td>
<td align="center" style="color:#C0C0C0">81.2</td>
</tr>
<tr><td align="left">iNaturalists 2019</td>
<td align="center">80.5</td>
<td align="center">83.4</td>
<td align="center">85.7</td>
<td align="center"><b>88.3</b></td>
<td align="center" style="color:#C0C0C0">84.1</td>
</tr>
<tr><td align="left">Places205</td>
<td align="center">63.9</td>
<td align="center">65.8</td>
<td align="center">65.9</td>
<td align="center"><b>66.8</b></td>
<td align="center" style="color:#C0C0C0">66.0</td>
</tr>
<tr><td align="left">Places365</td>
<td align="center">57.9</td>
<td align="center">59.4</td>
<td align="center">59.8</td>
<td align="center"><b>60.3</b></td>
<td align="center" style="color:#C0C0C0">58.0</td>
</tr>
</tbody></table>
### Pre-training
The pre-training instruction is in [PRETRAIN.md](PRETRAIN.md).
### License
This project is under the CC-BY-NC 4.0 license. See [LICENSE](LICENSE) for details.
PyTorch/NLP/Vision_Transformer/README.md 0 → 100644
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# 简介
pytorch框架下VIT模型预训练和微调任务，使用数据集为pytorch版本的ImageNet数据集
[代码地址](https://github.com/facebookresearch/mae)
# 数据集&模型地址
```
#昆山
/public/software/apps/DeepLearning/Data/ImageNet-pytorch
#乌镇
/public/DL_DATA/ImageNet-pytorch
```
模型下载地址（finetune时加载）：
[mae_pretrain_vit_base.pth](https://dl.fbaipublicfiles.com/mae/pretrain/mae_pretrain_vit_base.pth)
[mae_pretrain_vit_large.pth](https://dl.fbaipublicfiles.com/mae/pretrain/mae_pretrain_vit_large.pth)
[mae_pretrain_vit_huge.pth](https://dl.fbaipublicfiles.com/mae/pretrain/mae_pretrain_vit_huge.pth)
# 运行前准备
## 依赖包版本
```
需要安装timm包，且版本必须为0.3.2，一些重要依赖包版本如下：
tensorboard 2.0.2
protobuf 3.20.0
matplotlib 3.5.3
numpy 1.21.6
absl-py 1.2.0
```
## 报错
```
报错ImportError: cannot import name ‘container_abcs‘ from ‘torch._six‘
这是由于在1.8版本之后container_abcs就已经被移除了，而代码是基于1.8之前别的版本，所以导入方式不同会出现这样的错误：cannot import name ‘container_abcs’ from ‘torch._six’
因此使用不同版本的torch会出现这个问题。
1.8以下版本使用 ：
from torch._six import container_abcs；
1.8以上版本使用（改成这个）：
import collections.abc as container_abcs
int_classes = int
string_classes = str
```
## 环境变量
```
#环境变量
IMAGENET_DIR 数据集地址
PRETRAIN_CHKPT 模型文件地址
```
# 预训练任务
```
#模型参数
model 模型类型,可选:mae_vit_base_patch16,mae_vit_large_patch16,mae_vit_huge_patch14
预训练不需要加载模型，只需给出模型类型
```
## 单卡
./run_pretrain.sh
```
#!/bin/bash
export HIP_VISIBLE_DEVICE=0
export IMAGENET_DIR=/public/DL_DATA/ImageNet-pytorch
python3 main_pretrain.py --epochs 1 --model mae_vit_base_patch16 --batch_size 64 --model mae_vit_base_patch16 --data_path ${IMAGENET_DIR}
```
## 多卡
./run_pretrain-4.sh
```
export IMAGENET_DIR=/public/DL_DATA/ImageNet-pytorch
export HIP_VISIBLE_DEVICE=0,1,2,3
OMP_NUM_THREADS=1 python3 -m torch.distributed.launch --nproc_per_node=4 main_pretrain.py --epochs 1 --accum_iter 4 --model mae_vit_base_patch16 --batch_size 64 --model mae_vit_base_patch16 --data_path ${IMAGENET_DIR}
```
# 微调任务
```
#模型参数
model 模型类型,可选:vit_base_patch16,vit_large_patch16,vit_huge_patch14,注意这个参数要与PRETRAIN_CHKPT所给模型地址相匹配。例如：vit_base_patch16对应mae_pretrain_vit_base.pth
```
## 单卡
./run-finetune.sh
```
export HIP_VISIBLE_DEVICE=0
export PRETRAIN_CHKPT=/work/home/hepj/model/VIT/mae_pretrain_vit_base.pth
export IMAGENET_DIR=/public/DL_DATA/ImageNet-pytorch
python3 main_finetune.py \
--batch_size 32 \
--model vit_base_patch16 \
--finetune ${PRETRAIN_CHKPT} \
--epochs 1 \
--blr 5e-4 --layer_decay 0.65 \
--weight_decay 0.05 --drop_path 0.1 --mixup 0.8 --cutmix 1.0 --reprob 0.25 \
--dist_eval --data_path ${IMAGENET_DIR}
```
## 多卡
./run-finetune-4.sh
```
export HIP_VISIBLE_DEVICE=0,1,2,3
export PRETRAIN_CHKPT=/work/home/hepj/model/VIT/mae_pretrain_vit_base.pth
export IMAGENET_DIR=/public/DL_DATA/ImageNet-pytorch
OMP_NUM_THREADS=1 python3 -m torch.distributed.launch --nproc_per_node=4 main_finetune.py \
--accum_iter 4 \
--batch_size 32 \
--model vit_base_patch16 \
--finetune ${PRETRAIN_CHKPT} \
--epochs 1 \
--blr 5e-4 --layer_decay 0.65 \
--weight_decay 0.05 --drop_path 0.1 --mixup 0.8 --cutmix 1.0 --reprob 0.25 \
--dist_eval --data_path ${IMAGENET_DIR}
```
# 结果验证
验证使用的模型为mae_finetuned_vit_xxx.pth，下载地址：
[mae_finetuned_vit_base.pth](https://dl.fbaipublicfiles.com/mae/finetune/mae_finetuned_vit_base.pth)
[mae_finetuned_vit_large.pth](https://dl.fbaipublicfiles.com/mae/finetune/mae_finetuned_vit_large.pth)
[mae_finetuned_vit_huge.pth](https://dl.fbaipublicfiles.com/mae/finetune/mae_finetuned_vit_huge.pth)
./run_eval.sh
```
#注意 model 与 resume模型对应
export PRETRAIN_CHKPT=/work/home/hepj/model/VIT/mae_finetuned_vit_base.pth
export IMAGENET_DIR=/public/DL_DATA/ImageNet-pytorch
python main_finetune.py\
--eval\
--resume ${PRETRAIN_CHKPT}\
--model vit_base_patch16\
--batch_size 16\
--data_path ${IMAGENET_DIR}
```
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PyTorch/NLP/Vision_Transformer/engine_finetune.py 0 → 100644
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# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
# This source code is licensed under the license found in the
# LICENSE file in the root directory of this source tree.
# --------------------------------------------------------
# References:
# DeiT: https://github.com/facebookresearch/deit
# BEiT: https://github.com/microsoft/unilm/tree/master/beit
# --------------------------------------------------------
import math
import sys
from typing import Iterable, Optional
import torch
from timm.data import Mixup
from timm.utils import accuracy
import util.misc as misc
import util.lr_sched as lr_sched
def train_one_epoch(model: torch.nn.Module, criterion: torch.nn.Module,
data_loader: Iterable, optimizer: torch.optim.Optimizer,
device: torch.device, epoch: int, loss_scaler, max_norm: float = 0,
mixup_fn: Optional[Mixup] = None, log_writer=None,
args=None):
model.train(True)
metric_logger = misc.MetricLogger(delimiter=" ")
metric_logger.add_meter('lr', misc.SmoothedValue(window_size=1, fmt='{value:.6f}'))
header = 'Epoch: [{}]'.format(epoch)
print_freq = 20
accum_iter = args.accum_iter
optimizer.zero_grad()
if log_writer is not None:
print('log_dir: {}'.format(log_writer.log_dir))
for data_iter_step, (samples, targets) in enumerate(metric_logger.log_every(data_loader, print_freq, header)):
# we use a per iteration (instead of per epoch) lr scheduler
if data_iter_step % accum_iter == 0:
lr_sched.adjust_learning_rate(optimizer, data_iter_step / len(data_loader) + epoch, args)
samples = samples.to(device, non_blocking=True)
targets = targets.to(device, non_blocking=True)
if mixup_fn is not None:
samples, targets = mixup_fn(samples, targets)
with torch.cuda.amp.autocast():
outputs = model(samples)
loss = criterion(outputs, targets)
loss_value = loss.item()
if not math.isfinite(loss_value):
print("Loss is {}, stopping training".format(loss_value))
sys.exit(1)
loss /= accum_iter
loss_scaler(loss, optimizer, clip_grad=max_norm,
parameters=model.parameters(), create_graph=False,
update_grad=(data_iter_step + 1) % accum_iter == 0)
if (data_iter_step + 1) % accum_iter == 0:
optimizer.zero_grad()
torch.cuda.synchronize()
metric_logger.update(loss=loss_value)
min_lr = 10.
max_lr = 0.
for group in optimizer.param_groups:
min_lr = min(min_lr, group["lr"])
max_lr = max(max_lr, group["lr"])
metric_logger.update(lr=max_lr)
loss_value_reduce = misc.all_reduce_mean(loss_value)
if log_writer is not None and (data_iter_step + 1) % accum_iter == 0:
""" We use epoch_1000x as the x-axis in tensorboard.
This calibrates different curves when batch size changes.
"""
epoch_1000x = int((data_iter_step / len(data_loader) + epoch) * 1000)
log_writer.add_scalar('loss', loss_value_reduce, epoch_1000x)
log_writer.add_scalar('lr', max_lr, epoch_1000x)
# gather the stats from all processes
metric_logger.synchronize_between_processes()
print("Averaged stats:", metric_logger)
return {k: meter.global_avg for k, meter in metric_logger.meters.items()}
@torch.no_grad()
def evaluate(data_loader, model, device):
criterion = torch.nn.CrossEntropyLoss()
metric_logger = misc.MetricLogger(delimiter=" ")
header = 'Test:'
# switch to evaluation mode
model.eval()
for batch in metric_logger.log_every(data_loader, 10, header):
images = batch[0]
target = batch[-1]
images = images.to(device, non_blocking=True)
target = target.to(device, non_blocking=True)
# compute output
with torch.cuda.amp.autocast():
output = model(images)
loss = criterion(output, target)
acc1, acc5 = accuracy(output, target, topk=(1, 5))
batch_size = images.shape[0]
metric_logger.update(loss=loss.item())
metric_logger.meters['acc1'].update(acc1.item(), n=batch_size)
metric_logger.meters['acc5'].update(acc5.item(), n=batch_size)
# gather the stats from all processes
metric_logger.synchronize_between_processes()
print('* Acc@1 {top1.global_avg:.3f} Acc@5 {top5.global_avg:.3f} loss {losses.global_avg:.3f}'
.format(top1=metric_logger.acc1, top5=metric_logger.acc5, losses=metric_logger.loss))
return {k: meter.global_avg for k, meter in metric_logger.meters.items()}
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PyTorch/NLP/Vision_Transformer/engine_pretrain.py 0 → 100644
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# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
# This source code is licensed under the license found in the
# LICENSE file in the root directory of this source tree.
# --------------------------------------------------------
# References:
# DeiT: https://github.com/facebookresearch/deit
# BEiT: https://github.com/microsoft/unilm/tree/master/beit
# --------------------------------------------------------
import math
import sys
from typing import Iterable
import torch
import util.misc as misc
import util.lr_sched as lr_sched
def train_one_epoch(model: torch.nn.Module,
data_loader: Iterable, optimizer: torch.optim.Optimizer,
device: torch.device, epoch: int, loss_scaler,
log_writer=None,
args=None):
model.train(True)
metric_logger = misc.MetricLogger(delimiter=" ")
metric_logger.add_meter('lr', misc.SmoothedValue(window_size=1, fmt='{value:.6f}'))
header = 'Epoch: [{}]'.format(epoch)
print_freq = 20
accum_iter = args.accum_iter
optimizer.zero_grad()
if log_writer is not None:
print('log_dir: {}'.format(log_writer.log_dir))
for data_iter_step, (samples, _) in enumerate(metric_logger.log_every(data_loader, print_freq, header)):
# we use a per iteration (instead of per epoch) lr scheduler
if data_iter_step % accum_iter == 0:
lr_sched.adjust_learning_rate(optimizer, data_iter_step / len(data_loader) + epoch, args)
samples = samples.to(device, non_blocking=True)
with torch.cuda.amp.autocast():
loss, _, _ = model(samples, mask_ratio=args.mask_ratio)
loss_value = loss.item()
if not math.isfinite(loss_value):
print("Loss is {}, stopping training".format(loss_value))
sys.exit(1)
loss /= accum_iter
loss_scaler(loss, optimizer, parameters=model.parameters(),
update_grad=(data_iter_step + 1) % accum_iter == 0)
if (data_iter_step + 1) % accum_iter == 0:
optimizer.zero_grad()
torch.cuda.synchronize()
metric_logger.update(loss=loss_value)
lr = optimizer.param_groups[0]["lr"]
metric_logger.update(lr=lr)
loss_value_reduce = misc.all_reduce_mean(loss_value)
if log_writer is not None and (data_iter_step + 1) % accum_iter == 0:
""" We use epoch_1000x as the x-axis in tensorboard.
This calibrates different curves when batch size changes.
"""
epoch_1000x = int((data_iter_step / len(data_loader) + epoch) * 1000)
log_writer.add_scalar('train_loss', loss_value_reduce, epoch_1000x)
log_writer.add_scalar('lr', lr, epoch_1000x)
# gather the stats from all processes
metric_logger.synchronize_between_processes()
print("Averaged stats:", metric_logger)
return {k: meter.global_avg for k, meter in metric_logger.meters.items()}
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PyTorch/NLP/Vision_Transformer/main_finetune.py 0 → 100644
View file @ c056df78
# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
# This source code is licensed under the license found in the
# LICENSE file in the root directory of this source tree.
# --------------------------------------------------------
# References:
# DeiT: https://github.com/facebookresearch/deit
# BEiT: https://github.com/microsoft/unilm/tree/master/beit
# --------------------------------------------------------
import argparse
import datetime
import json
import numpy as np
import os
import time
from pathlib import Path
import torch
import torch.backends.cudnn as cudnn
from torch.utils.tensorboard import SummaryWriter
import timm
assert timm.__version__ == "0.3.2" # version check
from timm.models.layers import trunc_normal_
from timm.data.mixup import Mixup
from timm.loss import LabelSmoothingCrossEntropy, SoftTargetCrossEntropy
import util.lr_decay as lrd
import util.misc as misc
from util.datasets import build_dataset
from util.pos_embed import interpolate_pos_embed
from util.misc import NativeScalerWithGradNormCount as NativeScaler
import models_vit
from engine_finetune import train_one_epoch, evaluate
def get_args_parser():
parser = argparse.ArgumentParser('MAE fine-tuning for image classification', add_help=False)
parser.add_argument('--batch_size', default=64, type=int,
help='Batch size per GPU (effective batch size is batch_size * accum_iter * # gpus')
parser.add_argument('--epochs', default=50, type=int)
parser.add_argument('--accum_iter', default=1, type=int,
help='Accumulate gradient iterations (for increasing the effective batch size under memory constraints)')
# Model parameters
parser.add_argument('--model', default='vit_large_patch16', type=str, metavar='MODEL',
help='Name of model to train')
parser.add_argument('--input_size', default=224, type=int,
help='images input size')
parser.add_argument('--drop_path', type=float, default=0.1, metavar='PCT',
help='Drop path rate (default: 0.1)')
# Optimizer parameters
parser.add_argument('--clip_grad', type=float, default=None, metavar='NORM',
help='Clip gradient norm (default: None, no clipping)')
parser.add_argument('--weight_decay', type=float, default=0.05,
help='weight decay (default: 0.05)')
parser.add_argument('--lr', type=float, default=None, metavar='LR',
help='learning rate (absolute lr)')
parser.add_argument('--blr', type=float, default=1e-3, metavar='LR',
help='base learning rate: absolute_lr = base_lr * total_batch_size / 256')
parser.add_argument('--layer_decay', type=float, default=0.75,
help='layer-wise lr decay from ELECTRA/BEiT')
parser.add_argument('--min_lr', type=float, default=1e-6, metavar='LR',
help='lower lr bound for cyclic schedulers that hit 0')
parser.add_argument('--warmup_epochs', type=int, default=5, metavar='N',
help='epochs to warmup LR')
# Augmentation parameters
parser.add_argument('--color_jitter', type=float, default=None, metavar='PCT',
help='Color jitter factor (enabled only when not using Auto/RandAug)')
parser.add_argument('--aa', type=str, default='rand-m9-mstd0.5-inc1', metavar='NAME',
help='Use AutoAugment policy. "v0" or "original". " + "(default: rand-m9-mstd0.5-inc1)'),
parser.add_argument('--smoothing', type=float, default=0.1,
help='Label smoothing (default: 0.1)')
# * Random Erase params
parser.add_argument('--reprob', type=float, default=0.25, metavar='PCT',
help='Random erase prob (default: 0.25)')
parser.add_argument('--remode', type=str, default='pixel',
help='Random erase mode (default: "pixel")')
parser.add_argument('--recount', type=int, default=1,
help='Random erase count (default: 1)')
parser.add_argument('--resplit', action='store_true', default=False,
help='Do not random erase first (clean) augmentation split')
# * Mixup params
parser.add_argument('--mixup', type=float, default=0,
help='mixup alpha, mixup enabled if > 0.')
parser.add_argument('--cutmix', type=float, default=0,
help='cutmix alpha, cutmix enabled if > 0.')
parser.add_argument('--cutmix_minmax', type=float, nargs='+', default=None,
help='cutmix min/max ratio, overrides alpha and enables cutmix if set (default: None)')
parser.add_argument('--mixup_prob', type=float, default=1.0,
help='Probability of performing mixup or cutmix when either/both is enabled')
parser.add_argument('--mixup_switch_prob', type=float, default=0.5,
help='Probability of switching to cutmix when both mixup and cutmix enabled')
parser.add_argument('--mixup_mode', type=str, default='batch',
help='How to apply mixup/cutmix params. Per "batch", "pair", or "elem"')
# * Finetuning params
parser.add_argument('--finetune', default='',
help='finetune from checkpoint')
parser.add_argument('--global_pool', action='store_true')
parser.set_defaults(global_pool=True)
parser.add_argument('--cls_token', action='store_false', dest='global_pool',
help='Use class token instead of global pool for classification')
# Dataset parameters
parser.add_argument('--data_path', default='/datasets01/imagenet_full_size/061417/', type=str,
help='dataset path')
parser.add_argument('--nb_classes', default=1000, type=int,
help='number of the classification types')
parser.add_argument('--output_dir', default='./output_dir',
help='path where to save, empty for no saving')
parser.add_argument('--log_dir', default='./output_dir',
help='path where to tensorboard log')
parser.add_argument('--device', default='cuda',
help='device to use for training / testing')
parser.add_argument('--seed', default=0, type=int)
parser.add_argument('--resume', default='',
help='resume from checkpoint')
parser.add_argument('--start_epoch', default=0, type=int, metavar='N',
help='start epoch')
parser.add_argument('--eval', action='store_true',
help='Perform evaluation only')
parser.add_argument('--dist_eval', action='store_true', default=False,
help='Enabling distributed evaluation (recommended during training for faster monitor')
parser.add_argument('--num_workers', default=10, type=int)
parser.add_argument('--pin_mem', action='store_true',
help='Pin CPU memory in DataLoader for more efficient (sometimes) transfer to GPU.')
parser.add_argument('--no_pin_mem', action='store_false', dest='pin_mem')
parser.set_defaults(pin_mem=True)
# distributed training parameters
parser.add_argument('--world_size', default=1, type=int,
help='number of distributed processes')
parser.add_argument('--local_rank', default=-1, type=int)
parser.add_argument('--dist_on_itp', action='store_true')
parser.add_argument('--dist_url', default='env://',
help='url used to set up distributed training')
return parser
def main(args):
misc.init_distributed_mode(args)
print('job dir: {}'.format(os.path.dirname(os.path.realpath(__file__))))
print("{}".format(args).replace(', ', ',\n'))
device = torch.device(args.device)
# fix the seed for reproducibility
seed = args.seed + misc.get_rank()
torch.manual_seed(seed)
np.random.seed(seed)
cudnn.benchmark = True
dataset_train = build_dataset(is_train=True, args=args)
dataset_val = build_dataset(is_train=False, args=args)
if True: # args.distributed:
num_tasks = misc.get_world_size()
global_rank = misc.get_rank()
sampler_train = torch.utils.data.DistributedSampler(
dataset_train, num_replicas=num_tasks, rank=global_rank, shuffle=True
)
print("Sampler_train = %s" % str(sampler_train))
if args.dist_eval:
if len(dataset_val) % num_tasks != 0:
print('Warning: Enabling distributed evaluation with an eval dataset not divisible by process number. '
'This will slightly alter validation results as extra duplicate entries are added to achieve '
'equal num of samples per-process.')
sampler_val = torch.utils.data.DistributedSampler(
dataset_val, num_replicas=num_tasks, rank=global_rank, shuffle=True) # shuffle=True to reduce monitor bias
else:
sampler_val = torch.utils.data.SequentialSampler(dataset_val)
else:
sampler_train = torch.utils.data.RandomSampler(dataset_train)
sampler_val = torch.utils.data.SequentialSampler(dataset_val)
if global_rank == 0 and args.log_dir is not None and not args.eval:
os.makedirs(args.log_dir, exist_ok=True)
log_writer = SummaryWriter(log_dir=args.log_dir)
else:
log_writer = None
data_loader_train = torch.utils.data.DataLoader(
dataset_train, sampler=sampler_train,
batch_size=args.batch_size,
num_workers=args.num_workers,
pin_memory=args.pin_mem,
drop_last=True,
)
data_loader_val = torch.utils.data.DataLoader(
dataset_val, sampler=sampler_val,
batch_size=args.batch_size,
num_workers=args.num_workers,
pin_memory=args.pin_mem,
drop_last=False
)
mixup_fn = None
mixup_active = args.mixup > 0 or args.cutmix > 0. or args.cutmix_minmax is not None
if mixup_active:
print("Mixup is activated!")
mixup_fn = Mixup(
mixup_alpha=args.mixup, cutmix_alpha=args.cutmix, cutmix_minmax=args.cutmix_minmax,
prob=args.mixup_prob, switch_prob=args.mixup_switch_prob, mode=args.mixup_mode,
label_smoothing=args.smoothing, num_classes=args.nb_classes)
model = models_vit.__dict__[args.model](
num_classes=args.nb_classes,
drop_path_rate=args.drop_path,
global_pool=args.global_pool,
)
if args.finetune and not args.eval:
checkpoint = torch.load(args.finetune, map_location='cpu')
print("Load pre-trained checkpoint from: %s" % args.finetune)
checkpoint_model = checkpoint['model']
state_dict = model.state_dict()
for k in ['head.weight', 'head.bias']:
if k in checkpoint_model and checkpoint_model[k].shape != state_dict[k].shape:
print(f"Removing key {k} from pretrained checkpoint")
del checkpoint_model[k]
# interpolate position embedding
interpolate_pos_embed(model, checkpoint_model)
# load pre-trained model
msg = model.load_state_dict(checkpoint_model, strict=False)
print(msg)
if args.global_pool:
assert set(msg.missing_keys) == {'head.weight', 'head.bias', 'fc_norm.weight', 'fc_norm.bias'}
else:
assert set(msg.missing_keys) == {'head.weight', 'head.bias'}
# manually initialize fc layer
trunc_normal_(model.head.weight, std=2e-5)
model.to(device)
model_without_ddp = model
n_parameters = sum(p.numel() for p in model.parameters() if p.requires_grad)
print("Model = %s" % str(model_without_ddp))
print('number of params (M): %.2f' % (n_parameters / 1.e6))
eff_batch_size = args.batch_size * args.accum_iter * misc.get_world_size()
if args.lr is None: # only base_lr is specified
args.lr = args.blr * eff_batch_size / 256
print("base lr: %.2e" % (args.lr * 256 / eff_batch_size))
print("actual lr: %.2e" % args.lr)
print("accumulate grad iterations: %d" % args.accum_iter)
print("effective batch size: %d" % eff_batch_size)
if args.distributed:
model = torch.nn.parallel.DistributedDataParallel(model, device_ids=[args.gpu])
model_without_ddp = model.module
# build optimizer with layer-wise lr decay (lrd)
param_groups = lrd.param_groups_lrd(model_without_ddp, args.weight_decay,
no_weight_decay_list=model_without_ddp.no_weight_decay(),
layer_decay=args.layer_decay
)
optimizer = torch.optim.AdamW(param_groups, lr=args.lr)
loss_scaler = NativeScaler()
if mixup_fn is not None:
# smoothing is handled with mixup label transform
criterion = SoftTargetCrossEntropy()
elif args.smoothing > 0.:
criterion = LabelSmoothingCrossEntropy(smoothing=args.smoothing)
else:
criterion = torch.nn.CrossEntropyLoss()
print("criterion = %s" % str(criterion))
misc.load_model(args=args, model_without_ddp=model_without_ddp, optimizer=optimizer, loss_scaler=loss_scaler)
if args.eval:
test_stats = evaluate(data_loader_val, model, device)
print(f"Accuracy of the network on the {len(dataset_val)} test images: {test_stats['acc1']:.1f}%")
exit(0)
print(f"Start training for {args.epochs} epochs")
start_time = time.time()
max_accuracy = 0.0
for epoch in range(args.start_epoch, args.epochs):
if args.distributed:
data_loader_train.sampler.set_epoch(epoch)
train_stats = train_one_epoch(
model, criterion, data_loader_train,
optimizer, device, epoch, loss_scaler,
args.clip_grad, mixup_fn,
log_writer=log_writer,
args=args
)
if args.output_dir:
misc.save_model(
args=args, model=model, model_without_ddp=model_without_ddp, optimizer=optimizer,
loss_scaler=loss_scaler, epoch=epoch)
test_stats = evaluate(data_loader_val, model, device)
print(f"Accuracy of the network on the {len(dataset_val)} test images: {test_stats['acc1']:.1f}%")
max_accuracy = max(max_accuracy, test_stats["acc1"])
print(f'Max accuracy: {max_accuracy:.2f}%')
if log_writer is not None:
log_writer.add_scalar('perf/test_acc1', test_stats['acc1'], epoch)
log_writer.add_scalar('perf/test_acc5', test_stats['acc5'], epoch)
log_writer.add_scalar('perf/test_loss', test_stats['loss'], epoch)
log_stats = {**{f'train_{k}': v for k, v in train_stats.items()},
**{f'test_{k}': v for k, v in test_stats.items()},
'epoch': epoch,
'n_parameters': n_parameters}
if args.output_dir and misc.is_main_process():
if log_writer is not None:
log_writer.flush()
with open(os.path.join(args.output_dir, "log.txt"), mode="a", encoding="utf-8") as f:
f.write(json.dumps(log_stats) + "\n")
total_time = time.time() - start_time
total_time_str = str(datetime.timedelta(seconds=int(total_time)))
print('Training time {}'.format(total_time_str))
if __name__ == '__main__':
args = get_args_parser()
args = args.parse_args()
if args.output_dir:
Path(args.output_dir).mkdir(parents=True, exist_ok=True)
main(args)
PyTorch/NLP/Vision_Transformer/main_linprobe.py 0 → 100644
View file @ c056df78
# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
# This source code is licensed under the license found in the
# LICENSE file in the root directory of this source tree.
# --------------------------------------------------------
# References:
# DeiT: https://github.com/facebookresearch/deit
# MoCo v3: https://github.com/facebookresearch/moco-v3
# --------------------------------------------------------
import argparse
import datetime
import json
import numpy as np
import os
import time
from pathlib import Path
import torch
import torch.backends.cudnn as cudnn
from torch.utils.tensorboard import SummaryWriter
import torchvision.transforms as transforms
import torchvision.datasets as datasets
import timm
assert timm.__version__ == "0.3.2" # version check
from timm.models.layers import trunc_normal_
import util.misc as misc
from util.pos_embed import interpolate_pos_embed
from util.misc import NativeScalerWithGradNormCount as NativeScaler
from util.lars import LARS
from util.crop import RandomResizedCrop
import models_vit
from engine_finetune import train_one_epoch, evaluate
def get_args_parser():
parser = argparse.ArgumentParser('MAE linear probing for image classification', add_help=False)
parser.add_argument('--batch_size', default=512, type=int,
help='Batch size per GPU (effective batch size is batch_size * accum_iter * # gpus')
parser.add_argument('--epochs', default=90, type=int)
parser.add_argument('--accum_iter', default=1, type=int,
help='Accumulate gradient iterations (for increasing the effective batch size under memory constraints)')
# Model parameters
parser.add_argument('--model', default='vit_large_patch16', type=str, metavar='MODEL',
help='Name of model to train')
# Optimizer parameters
parser.add_argument('--weight_decay', type=float, default=0,
help='weight decay (default: 0 for linear probe following MoCo v1)')
parser.add_argument('--lr', type=float, default=None, metavar='LR',
help='learning rate (absolute lr)')
parser.add_argument('--blr', type=float, default=0.1, metavar='LR',
help='base learning rate: absolute_lr = base_lr * total_batch_size / 256')
parser.add_argument('--min_lr', type=float, default=0., metavar='LR',
help='lower lr bound for cyclic schedulers that hit 0')
parser.add_argument('--warmup_epochs', type=int, default=10, metavar='N',
help='epochs to warmup LR')
# * Finetuning params
parser.add_argument('--finetune', default='',
help='finetune from checkpoint')
parser.add_argument('--global_pool', action='store_true')
parser.set_defaults(global_pool=False)
parser.add_argument('--cls_token', action='store_false', dest='global_pool',
help='Use class token instead of global pool for classification')
# Dataset parameters
parser.add_argument('--data_path', default='/datasets01/imagenet_full_size/061417/', type=str,
help='dataset path')
parser.add_argument('--nb_classes', default=1000, type=int,
help='number of the classification types')
parser.add_argument('--output_dir', default='./output_dir',
help='path where to save, empty for no saving')
parser.add_argument('--log_dir', default='./output_dir',
help='path where to tensorboard log')
parser.add_argument('--device', default='cuda',
help='device to use for training / testing')
parser.add_argument('--seed', default=0, type=int)
parser.add_argument('--resume', default='',
help='resume from checkpoint')
parser.add_argument('--start_epoch', default=0, type=int, metavar='N',
help='start epoch')
parser.add_argument('--eval', action='store_true',
help='Perform evaluation only')
parser.add_argument('--dist_eval', action='store_true', default=False,
help='Enabling distributed evaluation (recommended during training for faster monitor')
parser.add_argument('--num_workers', default=10, type=int)
parser.add_argument('--pin_mem', action='store_true',
help='Pin CPU memory in DataLoader for more efficient (sometimes) transfer to GPU.')
parser.add_argument('--no_pin_mem', action='store_false', dest='pin_mem')
parser.set_defaults(pin_mem=True)
# distributed training parameters
parser.add_argument('--world_size', default=1, type=int,
help='number of distributed processes')
parser.add_argument('--local_rank', default=-1, type=int)
parser.add_argument('--dist_on_itp', action='store_true')
parser.add_argument('--dist_url', default='env://',
help='url used to set up distributed training')
return parser
def main(args):
misc.init_distributed_mode(args)
print('job dir: {}'.format(os.path.dirname(os.path.realpath(__file__))))
print("{}".format(args).replace(', ', ',\n'))
device = torch.device(args.device)
# fix the seed for reproducibility
seed = args.seed + misc.get_rank()
torch.manual_seed(seed)
np.random.seed(seed)
cudnn.benchmark = True
# linear probe: weak augmentation
transform_train = transforms.Compose([
RandomResizedCrop(224, interpolation=3),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
transforms.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225])])
transform_val = transforms.Compose([
transforms.Resize(256, interpolation=3),
transforms.CenterCrop(224),
transforms.ToTensor(),
transforms.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225])])
dataset_train = datasets.ImageFolder(os.path.join(args.data_path, 'train'), transform=transform_train)
dataset_val = datasets.ImageFolder(os.path.join(args.data_path, 'val'), transform=transform_val)
print(dataset_train)
print(dataset_val)
if True: # args.distributed:
num_tasks = misc.get_world_size()
global_rank = misc.get_rank()
sampler_train = torch.utils.data.DistributedSampler(
dataset_train, num_replicas=num_tasks, rank=global_rank, shuffle=True
)
print("Sampler_train = %s" % str(sampler_train))
if args.dist_eval:
if len(dataset_val) % num_tasks != 0:
print('Warning: Enabling distributed evaluation with an eval dataset not divisible by process number. '
'This will slightly alter validation results as extra duplicate entries are added to achieve '
'equal num of samples per-process.')
sampler_val = torch.utils.data.DistributedSampler(
dataset_val, num_replicas=num_tasks, rank=global_rank, shuffle=True) # shuffle=True to reduce monitor bias
else:
sampler_val = torch.utils.data.SequentialSampler(dataset_val)
else:
sampler_train = torch.utils.data.RandomSampler(dataset_train)
sampler_val = torch.utils.data.SequentialSampler(dataset_val)
if global_rank == 0 and args.log_dir is not None and not args.eval:
os.makedirs(args.log_dir, exist_ok=True)
log_writer = SummaryWriter(log_dir=args.log_dir)
else:
log_writer = None
data_loader_train = torch.utils.data.DataLoader(
dataset_train, sampler=sampler_train,
batch_size=args.batch_size,
num_workers=args.num_workers,
pin_memory=args.pin_mem,
drop_last=True,
)
data_loader_val = torch.utils.data.DataLoader(
dataset_val, sampler=sampler_val,
batch_size=args.batch_size,
num_workers=args.num_workers,
pin_memory=args.pin_mem,
drop_last=False
)
model = models_vit.__dict__[args.model](
num_classes=args.nb_classes,
global_pool=args.global_pool,
)
if args.finetune and not args.eval:
checkpoint = torch.load(args.finetune, map_location='cpu')
print("Load pre-trained checkpoint from: %s" % args.finetune)
checkpoint_model = checkpoint['model']
state_dict = model.state_dict()
for k in ['head.weight', 'head.bias']:
if k in checkpoint_model and checkpoint_model[k].shape != state_dict[k].shape:
print(f"Removing key {k} from pretrained checkpoint")
del checkpoint_model[k]
# interpolate position embedding
interpolate_pos_embed(model, checkpoint_model)
# load pre-trained model
msg = model.load_state_dict(checkpoint_model, strict=False)
print(msg)
if args.global_pool:
assert set(msg.missing_keys) == {'head.weight', 'head.bias', 'fc_norm.weight', 'fc_norm.bias'}
else:
assert set(msg.missing_keys) == {'head.weight', 'head.bias'}
# manually initialize fc layer: following MoCo v3
trunc_normal_(model.head.weight, std=0.01)
# for linear prob only
# hack: revise model's head with BN
model.head = torch.nn.Sequential(torch.nn.BatchNorm1d(model.head.in_features, affine=False, eps=1e-6), model.head)
# freeze all but the head
for _, p in model.named_parameters():
p.requires_grad = False
for _, p in model.head.named_parameters():
p.requires_grad = True
model.to(device)
model_without_ddp = model
n_parameters = sum(p.numel() for p in model.parameters() if p.requires_grad)
print("Model = %s" % str(model_without_ddp))
print('number of params (M): %.2f' % (n_parameters / 1.e6))
eff_batch_size = args.batch_size * args.accum_iter * misc.get_world_size()
if args.lr is None: # only base_lr is specified
args.lr = args.blr * eff_batch_size / 256
print("base lr: %.2e" % (args.lr * 256 / eff_batch_size))
print("actual lr: %.2e" % args.lr)
print("accumulate grad iterations: %d" % args.accum_iter)
print("effective batch size: %d" % eff_batch_size)
if args.distributed:
model = torch.nn.parallel.DistributedDataParallel(model, device_ids=[args.gpu])
model_without_ddp = model.module
optimizer = LARS(model_without_ddp.head.parameters(), lr=args.lr, weight_decay=args.weight_decay)
print(optimizer)
loss_scaler = NativeScaler()
criterion = torch.nn.CrossEntropyLoss()
print("criterion = %s" % str(criterion))
misc.load_model(args=args, model_without_ddp=model_without_ddp, optimizer=optimizer, loss_scaler=loss_scaler)
if args.eval:
test_stats = evaluate(data_loader_val, model, device)
print(f"Accuracy of the network on the {len(dataset_val)} test images: {test_stats['acc1']:.1f}%")
exit(0)
print(f"Start training for {args.epochs} epochs")
start_time = time.time()
max_accuracy = 0.0
for epoch in range(args.start_epoch, args.epochs):
if args.distributed:
data_loader_train.sampler.set_epoch(epoch)
train_stats = train_one_epoch(
model, criterion, data_loader_train,
optimizer, device, epoch, loss_scaler,
max_norm=None,
log_writer=log_writer,
args=args
)
if args.output_dir:
misc.save_model(
args=args, model=model, model_without_ddp=model_without_ddp, optimizer=optimizer,
loss_scaler=loss_scaler, epoch=epoch)
test_stats = evaluate(data_loader_val, model, device)
print(f"Accuracy of the network on the {len(dataset_val)} test images: {test_stats['acc1']:.1f}%")
max_accuracy = max(max_accuracy, test_stats["acc1"])
print(f'Max accuracy: {max_accuracy:.2f}%')
if log_writer is not None:
log_writer.add_scalar('perf/test_acc1', test_stats['acc1'], epoch)
log_writer.add_scalar('perf/test_acc5', test_stats['acc5'], epoch)
log_writer.add_scalar('perf/test_loss', test_stats['loss'], epoch)
log_stats = {**{f'train_{k}': v for k, v in train_stats.items()},
**{f'test_{k}': v for k, v in test_stats.items()},
'epoch': epoch,
'n_parameters': n_parameters}
if args.output_dir and misc.is_main_process():
if log_writer is not None:
log_writer.flush()
with open(os.path.join(args.output_dir, "log.txt"), mode="a", encoding="utf-8") as f:
f.write(json.dumps(log_stats) + "\n")
total_time = time.time() - start_time
total_time_str = str(datetime.timedelta(seconds=int(total_time)))
print('Training time {}'.format(total_time_str))
if __name__ == '__main__':
args = get_args_parser()
args = args.parse_args()
if args.output_dir:
Path(args.output_dir).mkdir(parents=True, exist_ok=True)
main(args)
PyTorch/NLP/Vision_Transformer/main_pretrain.py 0 → 100644
View file @ c056df78
# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
# This source code is licensed under the license found in the
# LICENSE file in the root directory of this source tree.
# --------------------------------------------------------
# References:
# DeiT: https://github.com/facebookresearch/deit
# BEiT: https://github.com/microsoft/unilm/tree/master/beit
# --------------------------------------------------------
import argparse
import datetime
import json
import numpy as np
import os
import time
from pathlib import Path
import torch
import torch.backends.cudnn as cudnn
from torch.utils.tensorboard import SummaryWriter
import torchvision.transforms as transforms
import torchvision.datasets as datasets
import timm
assert timm.__version__ == "0.3.2" # version check
import timm.optim.optim_factory as optim_factory
import util.misc as misc
from util.misc import NativeScalerWithGradNormCount as NativeScaler
import models_mae
from engine_pretrain import train_one_epoch
def get_args_parser():
parser = argparse.ArgumentParser('MAE pre-training', add_help=False)
parser.add_argument('--batch_size', default=64, type=int,
help='Batch size per GPU (effective batch size is batch_size * accum_iter * # gpus')
parser.add_argument('--epochs', default=400, type=int)
parser.add_argument('--accum_iter', default=1, type=int,
help='Accumulate gradient iterations (for increasing the effective batch size under memory constraints)')
# Model parameters
parser.add_argument('--model', default='mae_vit_large_patch16', type=str, metavar='MODEL',
help='Name of model to train')
parser.add_argument('--input_size', default=224, type=int,
help='images input size')
parser.add_argument('--mask_ratio', default=0.75, type=float,
help='Masking ratio (percentage of removed patches).')
parser.add_argument('--norm_pix_loss', action='store_true',
help='Use (per-patch) normalized pixels as targets for computing loss')
parser.set_defaults(norm_pix_loss=False)
# Optimizer parameters
parser.add_argument('--weight_decay', type=float, default=0.05,
help='weight decay (default: 0.05)')
parser.add_argument('--lr', type=float, default=None, metavar='LR',
help='learning rate (absolute lr)')
parser.add_argument('--blr', type=float, default=1e-3, metavar='LR',
help='base learning rate: absolute_lr = base_lr * total_batch_size / 256')
parser.add_argument('--min_lr', type=float, default=0., metavar='LR',
help='lower lr bound for cyclic schedulers that hit 0')
parser.add_argument('--warmup_epochs', type=int, default=40, metavar='N',
help='epochs to warmup LR')
# Dataset parameters
parser.add_argument('--data_path', default='/datasets01/imagenet_full_size/061417/', type=str,
help='dataset path')
parser.add_argument('--output_dir', default='./output_dir',
help='path where to save, empty for no saving')
parser.add_argument('--log_dir', default='./output_dir',
help='path where to tensorboard log')
parser.add_argument('--device', default='cuda',
help='device to use for training / testing')
parser.add_argument('--seed', default=0, type=int)
parser.add_argument('--resume', default='',
help='resume from checkpoint')
parser.add_argument('--start_epoch', default=0, type=int, metavar='N',
help='start epoch')
parser.add_argument('--num_workers', default=10, type=int)
parser.add_argument('--pin_mem', action='store_true',
help='Pin CPU memory in DataLoader for more efficient (sometimes) transfer to GPU.')
parser.add_argument('--no_pin_mem', action='store_false', dest='pin_mem')
parser.set_defaults(pin_mem=True)
# distributed training parameters
parser.add_argument('--world_size', default=1, type=int,
help='number of distributed processes')
parser.add_argument('--local_rank', default=-1, type=int)
parser.add_argument('--dist_on_itp', action='store_true')
parser.add_argument('--dist_url', default='env://',
help='url used to set up distributed training')
return parser
def main(args):
misc.init_distributed_mode(args)
print('job dir: {}'.format(os.path.dirname(os.path.realpath(__file__))))
print("{}".format(args).replace(', ', ',\n'))
device = torch.device(args.device)
# fix the seed for reproducibility
seed = args.seed + misc.get_rank()
torch.manual_seed(seed)
np.random.seed(seed)
cudnn.benchmark = True
# simple augmentation
transform_train = transforms.Compose([
transforms.RandomResizedCrop(args.input_size, scale=(0.2, 1.0), interpolation=3), # 3 is bicubic
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
transforms.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225])])
dataset_train = datasets.ImageFolder(os.path.join(args.data_path, 'train'), transform=transform_train)
print(dataset_train)
if True: # args.distributed:
num_tasks = misc.get_world_size()
global_rank = misc.get_rank()
sampler_train = torch.utils.data.DistributedSampler(
dataset_train, num_replicas=num_tasks, rank=global_rank, shuffle=True
)
print("Sampler_train = %s" % str(sampler_train))
else:
sampler_train = torch.utils.data.RandomSampler(dataset_train)
if global_rank == 0 and args.log_dir is not None:
os.makedirs(args.log_dir, exist_ok=True)
log_writer = SummaryWriter(log_dir=args.log_dir)
else:
log_writer = None
data_loader_train = torch.utils.data.DataLoader(
dataset_train, sampler=sampler_train,
batch_size=args.batch_size,
num_workers=args.num_workers,
pin_memory=args.pin_mem,
drop_last=True,
)
# define the model
model = models_mae.__dict__[args.model](norm_pix_loss=args.norm_pix_loss)
model.to(device)
model_without_ddp = model
print("Model = %s" % str(model_without_ddp))
eff_batch_size = args.batch_size * args.accum_iter * misc.get_world_size()
if args.lr is None: # only base_lr is specified
args.lr = args.blr * eff_batch_size / 256
print("base lr: %.2e" % (args.lr * 256 / eff_batch_size))
print("actual lr: %.2e" % args.lr)
print("accumulate grad iterations: %d" % args.accum_iter)
print("effective batch size: %d" % eff_batch_size)
if args.distributed:
model = torch.nn.parallel.DistributedDataParallel(model, device_ids=[args.gpu], find_unused_parameters=True)
model_without_ddp = model.module
# following timm: set wd as 0 for bias and norm layers
param_groups = optim_factory.add_weight_decay(model_without_ddp, args.weight_decay)
optimizer = torch.optim.AdamW(param_groups, lr=args.lr, betas=(0.9, 0.95))
print(optimizer)
loss_scaler = NativeScaler()
misc.load_model(args=args, model_without_ddp=model_without_ddp, optimizer=optimizer, loss_scaler=loss_scaler)
print(f"Start training for {args.epochs} epochs")
start_time = time.time()
for epoch in range(args.start_epoch, args.epochs):
if args.distributed:
data_loader_train.sampler.set_epoch(epoch)
train_stats = train_one_epoch(
model, data_loader_train,
optimizer, device, epoch, loss_scaler,
log_writer=log_writer,
args=args
)
if args.output_dir and (epoch % 20 == 0 or epoch + 1 == args.epochs):
misc.save_model(
args=args, model=model, model_without_ddp=model_without_ddp, optimizer=optimizer,
loss_scaler=loss_scaler, epoch=epoch)
log_stats = {**{f'train_{k}': v for k, v in train_stats.items()},
'epoch': epoch,}
if args.output_dir and misc.is_main_process():
if log_writer is not None:
log_writer.flush()
with open(os.path.join(args.output_dir, "log.txt"), mode="a", encoding="utf-8") as f:
f.write(json.dumps(log_stats) + "\n")
total_time = time.time() - start_time
total_time_str = str(datetime.timedelta(seconds=int(total_time)))
print('Training time {}'.format(total_time_str))
if __name__ == '__main__':
args = get_args_parser()
args = args.parse_args()
if args.output_dir:
Path(args.output_dir).mkdir(parents=True, exist_ok=True)
main(args)
PyTorch/NLP/Vision_Transformer/models_mae.py 0 → 100644
View file @ c056df78
# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
# This source code is licensed under the license found in the
# LICENSE file in the root directory of this source tree.
# --------------------------------------------------------
# References:
# timm: https://github.com/rwightman/pytorch-image-models/tree/master/timm
# DeiT: https://github.com/facebookresearch/deit
# --------------------------------------------------------
from functools import partial
import torch
import torch.nn as nn
from timm.models.vision_transformer import PatchEmbed, Block
from util.pos_embed import get_2d_sincos_pos_embed
class MaskedAutoencoderViT(nn.Module):
""" Masked Autoencoder with VisionTransformer backbone
"""
def __init__(self, img_size=224, patch_size=16, in_chans=3,
embed_dim=1024, depth=24, num_heads=16,
decoder_embed_dim=512, decoder_depth=8, decoder_num_heads=16,
mlp_ratio=4., norm_layer=nn.LayerNorm, norm_pix_loss=False):
super().__init__()
# --------------------------------------------------------------------------
# MAE encoder specifics
self.patch_embed = PatchEmbed(img_size, patch_size, in_chans, embed_dim)
num_patches = self.patch_embed.num_patches
self.cls_token = nn.Parameter(torch.zeros(1, 1, embed_dim))
self.pos_embed = nn.Parameter(torch.zeros(1, num_patches + 1, embed_dim), requires_grad=False) # fixed sin-cos embedding
self.blocks = nn.ModuleList([
Block(embed_dim, num_heads, mlp_ratio, qkv_bias=True, qk_scale=None, norm_layer=norm_layer)
for i in range(depth)])
self.norm = norm_layer(embed_dim)
# --------------------------------------------------------------------------
# --------------------------------------------------------------------------
# MAE decoder specifics
self.decoder_embed = nn.Linear(embed_dim, decoder_embed_dim, bias=True)
self.mask_token = nn.Parameter(torch.zeros(1, 1, decoder_embed_dim))
self.decoder_pos_embed = nn.Parameter(torch.zeros(1, num_patches + 1, decoder_embed_dim), requires_grad=False) # fixed sin-cos embedding
self.decoder_blocks = nn.ModuleList([
Block(decoder_embed_dim, decoder_num_heads, mlp_ratio, qkv_bias=True, qk_scale=None, norm_layer=norm_layer)
for i in range(decoder_depth)])
self.decoder_norm = norm_layer(decoder_embed_dim)
self.decoder_pred = nn.Linear(decoder_embed_dim, patch_size**2 * in_chans, bias=True) # decoder to patch
# --------------------------------------------------------------------------
self.norm_pix_loss = norm_pix_loss
self.initialize_weights()
def initialize_weights(self):
# initialization
# initialize (and freeze) pos_embed by sin-cos embedding
pos_embed = get_2d_sincos_pos_embed(self.pos_embed.shape[-1], int(self.patch_embed.num_patches**.5), cls_token=True)
self.pos_embed.data.copy_(torch.from_numpy(pos_embed).float().unsqueeze(0))
decoder_pos_embed = get_2d_sincos_pos_embed(self.decoder_pos_embed.shape[-1], int(self.patch_embed.num_patches**.5), cls_token=True)
self.decoder_pos_embed.data.copy_(torch.from_numpy(decoder_pos_embed).float().unsqueeze(0))
# initialize patch_embed like nn.Linear (instead of nn.Conv2d)
w = self.patch_embed.proj.weight.data
torch.nn.init.xavier_uniform_(w.view([w.shape[0], -1]))
# timm's trunc_normal_(std=.02) is effectively normal_(std=0.02) as cutoff is too big (2.)
torch.nn.init.normal_(self.cls_token, std=.02)
torch.nn.init.normal_(self.mask_token, std=.02)
# initialize nn.Linear and nn.LayerNorm
self.apply(self._init_weights)
def _init_weights(self, m):
if isinstance(m, nn.Linear):
# we use xavier_uniform following official JAX ViT:
torch.nn.init.xavier_uniform_(m.weight)
if isinstance(m, nn.Linear) and m.bias is not None:
nn.init.constant_(m.bias, 0)
elif isinstance(m, nn.LayerNorm):
nn.init.constant_(m.bias, 0)
nn.init.constant_(m.weight, 1.0)
def patchify(self, imgs):
"""
imgs: (N, 3, H, W)
x: (N, L, patch_size**2 *3)
"""
p = self.patch_embed.patch_size[0]
assert imgs.shape[2] == imgs.shape[3] and imgs.shape[2] % p == 0
h = w = imgs.shape[2] // p
x = imgs.reshape(shape=(imgs.shape[0], 3, h, p, w, p))
x = torch.einsum('nchpwq->nhwpqc', x)
x = x.reshape(shape=(imgs.shape[0], h * w, p**2 * 3))
return x
def unpatchify(self, x):
"""
x: (N, L, patch_size**2 *3)
imgs: (N, 3, H, W)
"""
p = self.patch_embed.patch_size[0]
h = w = int(x.shape[1]**.5)
assert h * w == x.shape[1]
x = x.reshape(shape=(x.shape[0], h, w, p, p, 3))
x = torch.einsum('nhwpqc->nchpwq', x)
imgs = x.reshape(shape=(x.shape[0], 3, h * p, h * p))
return imgs
def random_masking(self, x, mask_ratio):
"""
Perform per-sample random masking by per-sample shuffling.
Per-sample shuffling is done by argsort random noise.
x: [N, L, D], sequence
"""
N, L, D = x.shape # batch, length, dim
len_keep = int(L * (1 - mask_ratio))
noise = torch.rand(N, L, device=x.device) # noise in [0, 1]
# sort noise for each sample
ids_shuffle = torch.argsort(noise, dim=1) # ascend: small is keep, large is remove
ids_restore = torch.argsort(ids_shuffle, dim=1)
# keep the first subset
ids_keep = ids_shuffle[:, :len_keep]
x_masked = torch.gather(x, dim=1, index=ids_keep.unsqueeze(-1).repeat(1, 1, D))
# generate the binary mask: 0 is keep, 1 is remove
mask = torch.ones([N, L], device=x.device)
mask[:, :len_keep] = 0
# unshuffle to get the binary mask
mask = torch.gather(mask, dim=1, index=ids_restore)
return x_masked, mask, ids_restore
def forward_encoder(self, x, mask_ratio):
# embed patches
x = self.patch_embed(x)
# add pos embed w/o cls token
x = x + self.pos_embed[:, 1:, :]
# masking: length -> length * mask_ratio
x, mask, ids_restore = self.random_masking(x, mask_ratio)
# append cls token
cls_token = self.cls_token + self.pos_embed[:, :1, :]
cls_tokens = cls_token.expand(x.shape[0], -1, -1)
x = torch.cat((cls_tokens, x), dim=1)
# apply Transformer blocks
for blk in self.blocks:
x = blk(x)
x = self.norm(x)
return x, mask, ids_restore
def forward_decoder(self, x, ids_restore):
# embed tokens
x = self.decoder_embed(x)
# append mask tokens to sequence
mask_tokens = self.mask_token.repeat(x.shape[0], ids_restore.shape[1] + 1 - x.shape[1], 1)
x_ = torch.cat([x[:, 1:, :], mask_tokens], dim=1) # no cls token
x_ = torch.gather(x_, dim=1, index=ids_restore.unsqueeze(-1).repeat(1, 1, x.shape[2])) # unshuffle
x = torch.cat([x[:, :1, :], x_], dim=1) # append cls token
# add pos embed
x = x + self.decoder_pos_embed
# apply Transformer blocks
for blk in self.decoder_blocks:
x = blk(x)
x = self.decoder_norm(x)
# predictor projection
x = self.decoder_pred(x)
# remove cls token
x = x[:, 1:, :]
return x
def forward_loss(self, imgs, pred, mask):
"""
imgs: [N, 3, H, W]
pred: [N, L, p*p*3]
mask: [N, L], 0 is keep, 1 is remove,
"""
target = self.patchify(imgs)
if self.norm_pix_loss:
mean = target.mean(dim=-1, keepdim=True)
var = target.var(dim=-1, keepdim=True)
target = (target - mean) / (var + 1.e-6)**.5
loss = (pred - target) ** 2
loss = loss.mean(dim=-1) # [N, L], mean loss per patch
loss = (loss * mask).sum() / mask.sum() # mean loss on removed patches
return loss
def forward(self, imgs, mask_ratio=0.75):
latent, mask, ids_restore = self.forward_encoder(imgs, mask_ratio)
pred = self.forward_decoder(latent, ids_restore) # [N, L, p*p*3]
loss = self.forward_loss(imgs, pred, mask)
return loss, pred, mask
def mae_vit_base_patch16_dec512d8b(**kwargs):
model = MaskedAutoencoderViT(
patch_size=16, embed_dim=768, depth=12, num_heads=12,
decoder_embed_dim=512, decoder_depth=8, decoder_num_heads=16,
mlp_ratio=4, norm_layer=partial(nn.LayerNorm, eps=1e-6), **kwargs)
return model
def mae_vit_large_patch16_dec512d8b(**kwargs):
model = MaskedAutoencoderViT(
patch_size=16, embed_dim=1024, depth=24, num_heads=16,
decoder_embed_dim=512, decoder_depth=8, decoder_num_heads=16,
mlp_ratio=4, norm_layer=partial(nn.LayerNorm, eps=1e-6), **kwargs)
return model
def mae_vit_huge_patch14_dec512d8b(**kwargs):
model = MaskedAutoencoderViT(
patch_size=14, embed_dim=1280, depth=32, num_heads=16,
decoder_embed_dim=512, decoder_depth=8, decoder_num_heads=16,
mlp_ratio=4, norm_layer=partial(nn.LayerNorm, eps=1e-6), **kwargs)
return model
# set recommended archs
mae_vit_base_patch16 = mae_vit_base_patch16_dec512d8b # decoder: 512 dim, 8 blocks
mae_vit_large_patch16 = mae_vit_large_patch16_dec512d8b # decoder: 512 dim, 8 blocks
mae_vit_huge_patch14 = mae_vit_huge_patch14_dec512d8b # decoder: 512 dim, 8 blocks
PyTorch/NLP/Vision_Transformer/models_vit.py 0 → 100644
View file @ c056df78
# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
# This source code is licensed under the license found in the
# LICENSE file in the root directory of this source tree.
# --------------------------------------------------------
# References:
# timm: https://github.com/rwightman/pytorch-image-models/tree/master/timm
# DeiT: https://github.com/facebookresearch/deit
# --------------------------------------------------------
from functools import partial
import torch
import torch.nn as nn
import timm.models.vision_transformer
class VisionTransformer(timm.models.vision_transformer.VisionTransformer):
""" Vision Transformer with support for global average pooling
"""
def __init__(self, global_pool=False, **kwargs):
super(VisionTransformer, self).__init__(**kwargs)
self.global_pool = global_pool
if self.global_pool:
norm_layer = kwargs['norm_layer']
embed_dim = kwargs['embed_dim']
self.fc_norm = norm_layer(embed_dim)
del self.norm # remove the original norm
def forward_features(self, x):
B = x.shape[0]
x = self.patch_embed(x)
cls_tokens = self.cls_token.expand(B, -1, -1) # stole cls_tokens impl from Phil Wang, thanks
x = torch.cat((cls_tokens, x), dim=1)
x = x + self.pos_embed
x = self.pos_drop(x)
for blk in self.blocks:
x = blk(x)
if self.global_pool:
x = x[:, 1:, :].mean(dim=1) # global pool without cls token
outcome = self.fc_norm(x)
else:
x = self.norm(x)
outcome = x[:, 0]
return outcome
def vit_base_patch16(**kwargs):
model = VisionTransformer(
patch_size=16, embed_dim=768, depth=12, num_heads=12, mlp_ratio=4, qkv_bias=True,
norm_layer=partial(nn.LayerNorm, eps=1e-6), **kwargs)
return model
def vit_large_patch16(**kwargs):
model = VisionTransformer(
patch_size=16, embed_dim=1024, depth=24, num_heads=16, mlp_ratio=4, qkv_bias=True,
norm_layer=partial(nn.LayerNorm, eps=1e-6), **kwargs)
return model
def vit_huge_patch14(**kwargs):
model = VisionTransformer(
patch_size=14, embed_dim=1280, depth=32, num_heads=16, mlp_ratio=4, qkv_bias=True,
norm_layer=partial(nn.LayerNorm, eps=1e-6), **kwargs)
return model
\ No newline at end of file
PyTorch/NLP/Vision_Transformer/run-eval.sh 0 → 100644
View file @ c056df78
export PRETRAIN_CHKPT=/work/home/hepj/model/VIT/mae_finetuned_vit_base.pth
export IMAGENET_DIR=/public/DL_DATA/ImageNet-pytorch
python3 main_finetune.py\
--eval\
--resume ${PRETRAIN_CHKPT}\
--model vit_base_patch16\
--batch_size 16\
--data_path ${IMAGENET_DIR}
PyTorch/NLP/Vision_Transformer/run-finetune-4.sh 0 → 100644
View file @ c056df78
export HIP_VISIBLE_DEVICE=0,1,2,3
export PRETRAIN_CHKPT=/work/home/hepj/model/VIT/mae_pretrain_vit_base.pth
export IMAGENET_DIR=/public/DL_DATA/ImageNet-pytorch
OMP_NUM_THREADS=1 python3 -m torch.distributed.launch --nproc_per_node=4 main_finetune.py \
--accum_iter 4 \
--batch_size 32 \
--model vit_base_patch16 \
--finetune ${PRETRAIN_CHKPT} \
--epochs 1 \
--blr 5e-4 --layer_decay 0.65 \
--weight_decay 0.05 --drop_path 0.1 --mixup 0.8 --cutmix 1.0 --reprob 0.25 \
--dist_eval --data_path ${IMAGENET_DIR}
PyTorch/NLP/Vision_Transformer/run-finetune.sh 0 → 100644
View file @ c056df78
export HIP_VISIBLE_DEVICE=0
export PRETRAIN_CHKPT=/work/home/hepj/model/VIT/mae_pretrain_vit_base.pth
export IMAGENET_DIR=/public/DL_DATA/ImageNet-pytorch
python3 main_finetune.py \
--batch_size 32 \
--model vit_base_patch16 \
--finetune ${PRETRAIN_CHKPT} \
--epochs 1 \
--blr 5e-4 --layer_decay 0.65 \
--weight_decay 0.05 --drop_path 0.1 --mixup 0.8 --cutmix 1.0 --reprob 0.25 \
--dist_eval --data_path ${IMAGENET_DIR}
PyTorch/NLP/Vision_Transformer/run-pretrain-4.sh 0 → 100644
View file @ c056df78
export IMAGENET_DIR=/public/DL_DATA/ImageNet-pytorch
export HIP_VISIBLE_DEVICE=0,1,2,3
OMP_NUM_THREADS=1 python3 -m torch.distributed.launch --nproc_per_node=4 main_pretrain.py --epochs 1 --accum_iter 4 --model mae_vit_base_patch16 --batch_size 64 --model mae_vit_base_patch16 --data_path ${IMAGENET_DIR}
PyTorch/NLP/Vision_Transformer/run-pretrain.sh 0 → 100644
View file @ c056df78
#!/bin/bash
export HIP_VISIBLE_DEVICE=0
export IMAGENET_DIR=/public/DL_DATA/ImageNet-pytorch
python3 main_pretrain.py --epochs 1 --model mae_vit_base_patch16 --batch_size 64 --model mae_vit_base_patch16 --data_path ${IMAGENET_DIR}
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