How to run on Rockchip RK3399?

[sangdv]

Hi, have you tried it on RK3399? Does libMNN with OpenCL work on RK3399? I did not successfully run it on RK3399.
Besides, will you release other face recognition model on MNN? For example, arcface (insightface) with resnet50 or resnet101 backbone?

[MirrorYuChen]

No RK3399 avaliable, I think you need change the mnn lib compiled on RK 3399

[sangdv]

Thank you, will you release other face recognition model on MNN? For example, arcface (insightface) with resnet50 or resnet101 backbone?

[MirrorYuChen]

yes, but not now, I will provide later when I am free.

[xuguozhi]

here are the solutions for RK3399 ubuntu:
alibaba/MNN#426 (comment)
Tips:

• main.cpp add header: #include<dlfcn.h>

int main():

auto handle = dlopen("libMNN_CL.so", RTLD_NOW);

• CMakeLists.txt: target_link_libraries(MNN pthread ${CMAKE_DL_LIBS})
  我在RK3399 Ubuntu 18上面成功了

[xuguozhi]

First, you should build the right MNN lib version for your 3399(Ubuntu or Android)

[sangdv]

Hi @xuguozhi, do you have any link to guide how to build right MNN lib version on RK3399? When building libMNN_CL.so, first I cloned MNN from https://github.com/alibaba/MNN, set OpenCL flag to ON, and then tried to build the lib but got some errors at the end like this: undefined reference to `dlopen'. Should I modify something in MNN source code?
Besides, I have a Android RK3399 but with other board, not that Firefly. Do you have any introduction to flash Ubuntu 18 to eMMC? Thank you!

[xuguozhi]

if you use Android, please follow this link to build from source: https://www.yuque.com/mnn/en/build_android
or
you can just apply the prebuilt lib: https://github.com/alibaba/MNN/releases/download/0.2.1.9/MNN-Android-0.2.1.9.zip
version 0.2.1.9 works fine

[sangdv]

Hi @xuguozhi, actually i built libMNN_CL.so on a ubuntu 18 virtual machine. Did you get the errors **undefined reference to dlopen', dlclose'... ** when building libmnn_CL.so?

[xuguozhi]

Hi @xuguozhi, actually i built libMNN_CL.so on a ubuntu 18 virtual machine. Did you get the errors **undefined reference to dlopen', dlclose'... ** when building libmnn_CL.so?

Not get. I git cloned the source code on RK3399 board and build MNN on it