mmdeploy/docs/en/01-how-to-build/rockchip.md

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# Build for RKNN
This tutorial is based on Ubuntu-18.04 and Rockchip NPU `rk3588`. For different NPU devices, you may have to use different rknn packages.
Below is a table describing the relationship:
| Device | Python Package | c/c++ SDK |
| -------------------- | ---------------------------------------------------------------- | -------------------------------------------------- |
| RK1808/RK1806 | [rknn-toolkit](https://github.com/rockchip-linux/rknn-toolkit) | [rknpu](https://github.com/rockchip-linux/rknpu) |
| RV1109/RV1126 | [rknn-toolkit](https://github.com/rockchip-linux/rknn-toolkit) | [rknpu](https://github.com/rockchip-linux/rknpu) |
| RK3566/RK3568/RK3588 | [rknn-toolkit2](https://github.com/rockchip-linux/rknn-toolkit2) | [rknpu2](https://github.com/rockchip-linux/rknpu2) |
| RV1103/RV1106 | [rknn-toolkit2](https://github.com/rockchip-linux/rknn-toolkit2) | [rknpu2](https://github.com/rockchip-linux/rknpu2) |
## Installation
It is recommended to create a virtual environment for the project.
1. Get RKNN-Toolkit2 or RKNN-Toolkit through git. RKNN-Toolkit2 for example:
```
git clone git@github.com:rockchip-linux/rknn-toolkit2.git
```
2. Install RKNN python package following [rknn-toolkit2 doc](https://github.com/rockchip-linux/rknn-toolkit2/tree/master/doc) or [rknn-toolkit doc](https://github.com/rockchip-linux/rknn-toolkit/tree/master/doc). When installing rknn python package, it is better to append `--no-deps` after the commands to avoid dependency conflicts. RKNN-Toolkit2 package for example:
```
pip install packages/rknn_toolkit2-1.2.0_f7bb160f-cp36-cp36m-linux_x86_64.whl --no-deps
```
3. Install ONNX==1.8.0 before reinstall MMDeploy from source following the [instructions](../01-how-to-build/build_from_source.md). Note that there are conflicts between the pip dependencies of MMDeploy and RKNN. Here is the suggested packages versions for python 3.6:
```
protobuf==3.19.4
onnx==1.8.0
onnxruntime==1.8.0
torch==1.8.0
torchvision==0.9.0
```
4. Install torch and torchvision using conda. For example:
```
conda install pytorch==1.8.0 torchvision==0.9.0 cudatoolkit=11.1 -c pytorch -c conda-forge
```
To work with models from [MMClassification](https://mmclassification.readthedocs.io/en/latest/getting_started.html), you may need to install it additionally.
## Usage
Example:
```bash
python tools/deploy.py \
configs/mmcls/classification_rknn_static.py \
/mmclassification_dir/configs/resnet/resnet50_8xb32_in1k.py \
https://download.openmmlab.com/mmclassification/v0/resnet/resnet50_batch256_imagenet_20200708-cfb998bf.pth \
/mmclassification_dir/demo/demo.JPEG \
--work-dir ../resnet50 \
--device cpu
```
## Deployment config
With the deployment config, you can modify the `backend_config` for your preference. An example `backend_config` of mmclassification is shown as below:
```python
backend_config = dict(
type='rknn',
common_config=dict(
mean_values=None,
std_values=None,
target_platform='rk3588',
optimization_level=3),
quantization_config=dict(do_quantization=False, dataset=None),
input_size_list=[[3, 224, 224]])
```
The contents of `common_config` are for `rknn.config()`. The contents of `quantization_config` are used to control `rknn.build()`. You may have to modify `target_platform` for your own preference.
## Build SDK with Rockchip NPU
### Build SDK with RKNPU2
1. Get rknpu2 through git:
```
git clone git@github.com:rockchip-linux/rknpu2.git
```
2. For linux, download gcc cross compiler. The download link of the compiler from the official user guide of `rknpu2` was deprecated. You may use another verified [link](https://github.com/Caesar-github/gcc-buildroot-9.3.0-2020.03-x86_64_aarch64-rockchip-linux-gnu). After download and unzip the compiler, you may open the terminal, set `RKNN_TOOL_CHAIN` and `RKNPU2_DEVICE_DIR` by `export RKNN_TOOL_CHAIN=/path/to/gcc/usr;export RKNPU2_DEVICE_DIR=/path/to/rknpu2/runtime/RK3588`.
3. after the above preparition, run the following commands:
```shell
cd /path/to/mmdeploy
mkdir -p build && rm -rf build/CM* && cd build
export LD_LIBRARY_PATH=$RKNN_TOOL_CHAIN/lib64:$LD_LIBRARY_PATH
cmake \
-DCMAKE_TOOLCHAIN_FILE=/path/to/mmdeploy/cmake/toolchains/rknpu2-linux-gnu.cmake \
-DMMDEPLOY_BUILD_SDK=ON \
-DCMAKE_BUILD_TYPE=Debug \
-DOpenCV_DIR=${RKNPU2_DEVICE_DIR}/../../examples/3rdparty/opencv/opencv-linux-aarch64/share/OpenCV \
-DMMDEPLOY_BUILD_SDK_PYTHON_API=ON \
-DMMDEPLOY_TARGET_DEVICES="cpu" \
-DMMDEPLOY_TARGET_BACKENDS="rknn" \
-DMMDEPLOY_CODEBASES=all \
-DMMDEPLOY_BUILD_TEST=ON \
-DMMDEPLOY_BUILD_EXAMPLES=ON \
..
make && make install
```
## Run the demo with SDK
First make sure that`--dump-info`is used during convert model, so that the working directory has the files required by the SDK such as `pipeline.json`.
`adb push` the model directory, executable file and .so to the device.
```bash
cd /path/to/mmdeploy
adb push resnet50 /data/local/tmp/resnet50
adb push /mmclassification_dir/demo/demo.JPEG /data/local/tmp/resnet50/demo.JPEG
cd build
adb push lib /data/local/tmp/lib
adb push bin/image_classification /data/local/tmp/image_classification
```
Set up environment variable and execute the sample.
```bash
adb shell
cd /data/local/tmp
export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/data/local/tmp/lib
./image_classification cpu ./resnet50 ./resnet50/demo.JPEG
..
label: 65, score: 0.95
```
## Troubleshooting
- MMDet models.
YOLOV3 & YOLOX: you may paste the following partition configuration into [detection_rknn_static.py](https://github.com/open-mmlab/mmdeploy/blob/master/configs/mmdet/detection/detection_rknn_static.py):
```python
# yolov3, yolox for rknn-toolkit and rknn-toolkit2
partition_config = dict(
type='rknn', # the partition policy name
apply_marks=True, # should always be set to True
partition_cfg=[
dict(
save_file='model.onnx', # name to save the partitioned onnx
start=['detector_forward:input'], # [mark_name:input, ...]
end=['yolo_head:input'], # [mark_name:output, ...]
output_names=[f'pred_maps.{i}' for i in range(3)]) # output names
])
```
RetinaNet & SSD & FSAF with rknn-toolkit2, you may paste the following partition configuration into [detection_rknn_static.py](https://github.com/open-mmlab/mmdeploy/blob/master/configs/mmdet/detection/detection_rknn_static.py). Users with rknn-toolkit can directly use default config.
```python
# retinanet, ssd
partition_config = dict(
type='rknn', # the partition policy name
apply_marks=True,
partition_cfg=[
dict(
save_file='model.onnx',
start='detector_forward:input',
end=['BaseDenseHead:output'],
output_names=[f'BaseDenseHead.cls.{i}' for i in range(5)] +
[f'BaseDenseHead.loc.{i}' for i in range(5)])
])
```
- SDK only supports int8 rknn model, which require `do_quantization=True` when converting models.