Luckfox Forums

Hello,

I have a LuckFox Pico Ultra W and I'm trying to use the RKNN library using the Ubuntu Kernel using the following steps:

I installed the linario compiler: gcc-linaro-7.5.0-2019.12-i686_arm-linux-gnueabihf
I compiled the rknn_yolov5_demo with said compiler and changed it to link with the librknnrt.so from the repo path 'rknn-toolkit2/rknpu2/runtime/Linux/librknn_api/armhf'
I copied the librknnrt.so to /lib and ran the compiled yolo demo binary using the yolov5s-640-640.rknn model file
After receiving the error ' failed to open rknpu module, need to insmod rknpu dirver!', I found rknpu.ko in the SDK's build folder and installed it with the 'insmod' command as I was asked
After doing all of this, I can finally get the demo to run (though only with sudo), only to fall on the following errors:

E RKNN: [16:36:58.030] failed to allocate fd, ret: -1, errno: 12, errstr: Cannot allocate memory
E RKNN: [16:36:58.031] failed to malloc npu memory, size: 7752683, flags: 0x2
E RKNN: [16:36:58.032] read File: yolov5s-640-640.rknn failed!
E RKNN: [16:36:58.033] rknn_init, load model failed!
rknn_init fail! ret=-6

I do not know what I'm doing wrong, and have no way to debug the error since the library isn't opensource
Am I doing anything wrong? Did I skip some steps or should use a different .so library? wrong compiler?
Would appreciate any sort of help.

Hello, the Ubuntu system currently does not support RKNN. Please use the Buildroot system. This is due to the incompatibility between glibc and uclibc. Similarly, most of the Rockchip specific features of Luckfox Pico cannot be run on non uclibc systems such as Ubuntu. For example, the ISP part of the CSI camera is relatively core. If it is not necessary for apt requirements, it is recommended to use the buildroot system.