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[FEATURE REQUEST] On Jetson Nano: Warn about OpenCV 4.1.1 cmake not finding cuDNN when using JetPack 4.4
Describe the issue OpenCV 4.1.1 cmake doesn't find cuDNN when using JetPack 4.4
System
- Jetson Nano
- cmake 3.16.3
- L4T 32.4.3 [ JetPack 4.4 ]
- Ubuntu 18.04.5 LTS
- Kernel Version: 4.9.140-tegra
- CUDA 10.2.89
- CUDA Architecture: 5.3
- OpenCV version: 4.1.1
- OpenCV Cuda: NO
- CUDNN: 8.0.0.180
- TensorRT: 7.1.3.0
- Vision Works: 1.6.0.501
- VPI: 0.3.7
To Reproduce
- Download and install the Jetson Nano SD Card image https://developer.nvidia.com/jetson-nano-sd-card-image JP 4.4 from 2020/07/07
- optional: install cmake 3.16.3
- Checkout this repo and run:
./buildOpenCV.sh |& tee openCV_build.log
In the cmake config you can see that cuDNN -> NO is diplayed and OpenCV is built without it
Expected behavior cuDNN -> YES is detected by cmake and OpenCV is built with cuDNN
Additional context I was using a newer version of cmake as my build pipline requires this. So there's no issue related reason for the updated cmake version. This is likely not the cause for the error.
Explicitely providing the flag -D CUDNN_VERSION='8.0'
resolved the issue. Via https://github.com/mdegans/nano_build_opencv
Maybe modify the shell script with a little switch statement selecting the explicit verison depending on the JetPack version?
Did you solve this issue? I am working on building OpenCV 4.3.0 using JetPack4.4 on Xavier Agx and meet the same problem.
Well it is solved as described in my previous comment. Yet I wouldn't call this a proper solution but a workaround. I'd say it's up to the maintainer to provide a fix or classify my comment as solution.
@TeddybearCrisis Thank you! I use this method and my OpenCV 4.4.0 manages to find cuDNN!