# Core ML feature support

MMDeploy support convert Pytorch model to Core ML and inference.

## Installation

To convert the model in mmdet, you need to compile libtorch to support custom operators such as nms.

```bash
cd ${PYTORCH_DIR}
mkdir build && cd build
cmake .. \
    -DCMAKE_BUILD_TYPE=Release \
    -DPYTHON_EXECUTABLE=`which python` \
    -DCMAKE_INSTALL_PREFIX=install \
    -DDISABLE_SVE=ON # low version like 1.8.0 of pytorch need this option
make install
```

## Usage

```bash
python tools/deploy.py \
    configs/mmdet/detection/detection_coreml_static-800x1344.py \
    /mmdetection_dir/configs/retinanet/retinanet_r18_fpn_1x_coco.py \
    /checkpoint/retinanet_r18_fpn_1x_coco_20220407_171055-614fd399.pth \
    /mmdetection_dir/demo/demo.jpg \
    --work-dir work_dir/retinanet \
    --device cpu \
    --dump-info
```