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+# Get Started
+## Installation
+1. clone this repo.
+    ```
+    git clone https://github.com/ShiqiYu/OpenGait.git
+    ```
+2. Install dependenices:
+    - pytorch >= 1.10
+    - torchvision
+    - pyyaml
+    - tensorboard
+    - opencv-python
+    - tqdm
+    - py7zr
+    - kornia
+    - einops
+  
+    Install dependenices by [Anaconda](https://conda.io/projects/conda/en/latest/user-guide/install/index.html):
+    ```
+    conda install tqdm pyyaml tensorboard opencv kornia einops -c conda-forge
+    conda install pytorch==1.10 torchvision -c pytorch
+    ```    
+    Or, Install dependenices by pip:
+    ```
+    pip install tqdm pyyaml tensorboard opencv-python kornia einops
+    pip install torch==1.10 torchvision==0.11
+    ```
+## Prepare dataset
+See [prepare dataset](2.prepare_dataset.md).
+
+## Get trained model
+- Option 1:
+    ```
+    python misc/download_pretrained_model.py
+    ```
+- Option 2: Go to the [release page](https://github.com/ShiqiYu/OpenGait/releases/), then download the model file and uncompress it to [output](output).
+
+## Train
+Train a model by
+```
+CUDA_VISIBLE_DEVICES=0,1 python -m torch.distributed.launch --nproc_per_node=2 opengait/main.py --cfgs ./configs/baseline/baseline.yaml --phase train
+```
+- `python -m torch.distributed.launch` [DDP](https://pytorch.org/tutorials/intermediate/ddp_tutorial.html) launch instruction.
+- `--nproc_per_node` The number of gpus to use, and it must equal the length of `CUDA_VISIBLE_DEVICES`.
+- `--cfgs` The path to config file.
+- `--phase` Specified as `train`.
+<!-- - `--iter` You can specify a number of iterations or use `restore_hint` in the config file and resume training from there. -->
+- `--log_to_file` If specified, the terminal log will be written on disk simultaneously. 
+
+You can run commands in [train.sh](train.sh) for training different models.
+
+## Test
+Evaluate the trained model by
+```
+CUDA_VISIBLE_DEVICES=0,1 python -m torch.distributed.launch --nproc_per_node=2 opengait/main.py --cfgs ./configs/baseline/baseline.yaml --phase test
+```
+- `--phase` Specified as `test`.
+- `--iter` Specify a iteration checkpoint.
+
+**Tip**: Other arguments are the same as train phase.
+
+You can run commands in [test.sh](test.sh) for testing different models.
+
+## Customize
+1. Read the [detailed config](docs/1.detailed_config.md) to figure out the usage of needed setting items;
+2. See [how to create your model](docs/2.how_to_create_your_model.md);
+3. There are some advanced usages, refer to [advanced usages](docs/3.advanced_usages.md), please.
+
+## Warning
+- In `DDP` mode, zombie processes may be generated when the program terminates abnormally. You can use this command [sh misc/clean_process.sh](./misc/clean_process.sh) to clear them.