Cuda/ nvcc not found

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

Hi,

I bought a jetson nano development kit few days ago. I followed the quick start guide to have ubuntu and jetpack on the nano via an image on a microSD card.

Do I have to do something after this guide? To install CUDA for example? Because the command nvcc doesn’t work and if I want to install and compile darknet, it says CUDA is not found.

Sincerely,

1 Like
2

If you used the Nano SD card image, then yes, it already has the CUDA Toolkit installed. Check under /usr/local/cuda to verify that it’s there.

Check that your ~/.bashrc file has these lines at the end, and if not, add them and restart your terminal:

$ export PATH=/usr/local/cuda/bin${PATH:+:${PATH}}
$ export LD_LIBRARY_PATH=/usr/local/cuda/lib64\
                         ${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}
7 Likes
3

…nevermind…didn’t see the “+:” in the statement. Was thinking the “:” was missed but it wasn’t.

4

It might be a good idea to modify /etc/skel/ on the rootfs to add this by default. .profile might be a good place to put it. It’s evaluated before .bashrc and runs for any shell (or whatever). It’s where Canonical (and Debian) puts modifications to $PATH.

3 Likes
5

Hi, wich bashrc do you speak of? the one hidden in my home directory?
I use jetpack 4.3, just to understand, is this normal that it is not already linked?

6

With the path added it worked thanks! But to be sure everythings is still working, when I compile with darknet, I get this message :
darknet is fine for now but uselib_track has been disabled!
please rebuild opencv from sources with cuda support to enable it

I did have this problem on Windows, but on linux I’m not sure how to handle this problem.

1 Like
8

Hi,

It looks like the darknet frameworks requires a GPU version OpenCV.
The package installed from JetPack doesn’t enable the GPU support.

You can built it from source with this script:

https://github.com/AastaNV/JEP/blob/master/script/install_opencv4.1.1_Jetson.sh

If the error continues, would you mind to file a new topic that specified for OpenCV?

Thanks.

1 Like
10

Hello,

It says that the script cannot be found
Are there any other scripts I can use?

Thank you.