Libcudnn_cnn_infer.so.8 library can not found

1

I’m using miniconda + wsl. I have instaled cudnn + cuda toolkit
when I run pytorch project

/home/icy/miniconda3/envs/torch_new/bin/python /home/icy/source/examples/mnist/main.py 
/home/icy/miniconda3/envs/torch_new/lib/python3.9/site-packages/torch/lib
True
/usr/local/cuda
Could not load library libcudnn_cnn_infer.so.8. Error: libcuda.so: cannot open shared object file: No such file or directory
Please make sure libcudnn_cnn_infer.so.8 is in your library path!
Aborted

but in my environment , the so library can be found

(base) icy@DESKTOP-1D9KUKI:~/source/examples/mnist$ ldconfig -p | grep libcudnn_cnn_infer.so
        libcudnn_cnn_infer.so.8 (libc6,x86-64) => /usr/local/cuda/targets/x86_64-linux/lib/libcudnn_cnn_infer.so.8
        libcudnn_cnn_infer.so (libc6,x86-64) => /usr/local/cuda/targets/x86_64-linux/lib/libcudnn_cnn_infer.so

any idea how to solve this questions? or how pytorch is find cudnn lib

2

Hi, I also faced the same problem on WSL2.

As discussed in this issue it is just a matter to add this in the .bashrc:

export LD_LIBRARY_PATH=/usr/lib/wsl/lib:$LD_LIBRARY_PATH

Be sure that your library is in /usr/lib/wsl/lib, to see it you can run

ldconfig -p | grep cuda
4

I have downgraded to Ubuntu20.04 wsl. this problem was gone. I think is related to Ubuntu 22.04
thanks for your helping by the way.

5

Hello @kcyrockton Do you solve the issue with ubuntu22.04? I have the same bug!

6

nope
I have downgraded to Ubuntu20.04

7

Thank you so much! It works

8

Thanks! This worked for me on WSL2 with Ubuntu22.04 :slight_smile:

9

I had the same issue on Ubuntu 22.04.

The error message is a bit misleading:

Could not load library libcudnn_cnn_infer.so.8. Error: libcuda.so: cannot open shared object file: No such file or directory
Please make sure libcudnn_cnn_infer.so.8 is in your library path!

The problem is not libcudnn_cnn_infer.so.8 as the second line says, but as mentioned in the first line, libcudnn_cnn_infer.so.8 is trying to open libcuda.so that it cannot find.

On my distribution, I had a libcuda.so.1 but no libcuda.so. So I made a symbolic link from libcuda.so.1 to libcuda.so and it worked.

10

Did you build PyTorch from source or did you install the pip wheels or conda binaries?
Also, did you see the issue only on WSL2?

11

In my case, I installed it with pip. And it is on a native Ubuntu 22.04 LTS (not WSL)

For me, I considered it as solved. But I just mentioned my solution in case that would be helpful.

12

I’m seeing a similar issue except I wouldn’t be able to use the recommended solution for downgrading to Ubuntu 22.04 since I’m on Debian bookworm. I do have LD_LIBRARY_PATH set to :/home/barry1/miniconda3/envs/tf/lib/ does anyone have any other recommendations?

fixed it using the solution here: /usr/lib/wsl/lib/libcuda.so.1 is not a symbolic link · Issue #5663 · microsoft/WSL · GitHub

WSL is garbage. that is all.

13

Thank you! It works. I have solved the issue under ubuntu 22.04.

14

worked with WSL2 on ubuntu 22.04 for me as well!

15

i have same problem，and i can’t find the libcudnn_cnn_infer.so.8 in the /usr/lib/wsl/lib

16

I encountered this on WSL2 as well. Fixed by /usr/lib/wsl/lib/libcuda.so.1 is not a symbolic link · Issue #5663 · microsoft/WSL · GitHub

17

Thanks pal, it solves the issue !

18

I had the same problem, none of the solutions here worked, in the end the problem was my shell since i was usign fish, tried every solution in this thread and then i just used bash and it worked

19

also worked for me with WSL2, ubuntu 22.04

20

thank you, your answer solves my question!

21

Hey, thanks. this worked.