Libcudnn.so.8 error and OpenCV without CUDA

[Archer_Kestrel]

I have a Jetson Nano with ubuntu 22.04 (jetpack 6.2), installed python 3.10.12, and I’ve being stuck in import torch with this libcudnn.so.8 error when i was trying to write python code, could anyone help me with this? I am new to Jetson nano and I’m trying to get jetson-inference running, but nothing came out!

Logs are as follow:

import torch
Traceback (most recent call last):
File “”, line 1, in
File “/home/wheeltec/.local/lib/python3.10/site-packages/torch/init.py”, line 235, in
from torch._C import * # noqa: F403
ImportError: libcudnn.so.8: cannot open shared object file: No such file or directory

[AastaLLL]

Hi,

Could you try the PyTorch and OpenCV package from the below link:

https://pypi.jetson-ai-lab.dev/jp6/cu126

Thanks.

[Archer_Kestrel]

So I downloaded torch-2.6.0rc1-cp310-cp310-linux_aarch64.whl, and opencv_python-4.10.0-py3-none-any.whl. Both installations were successful and I tried import torch again and it worked, thanks!
Although I did not know why this error occurs, since I installed torch before. Does it have anything to do with some sort of jetson’s unique configurations?

[AastaLLL]

Hi,

The PyTorch you tested previously is built with cuDNN v8.
But JetPack 6.2 includes cuDNN v9 already so it is not compatible.

Thanks.