Cuda/ nvcc not found

olivier.berton.leclercq · April 1, 2020, 12:59pm

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,

dusty_nv · April 1, 2020, 2:56pm

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}}

linuxdev · April 1, 2020, 6:54pm

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

mdegans · April 1, 2020, 7:07pm

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.

olivier.berton.leclercq · April 2, 2020, 7:35am

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?

olivier.berton.leclercq · April 2, 2020, 7:50am

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.

AastaLLL · April 13, 2020, 5:29am

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:

github.com

AastaNV/JEP/blob/master/script/install_opencv4.1.1_Jetson.sh

#!/bin/bash
#
# Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
#
# NVIDIA Corporation and its licensors retain all intellectual property
# and proprietary rights in and to this software, related documentation
# and any modifications thereto.  Any use, reproduction, disclosure or
# distribution of this software and related documentation without an express
# license agreement from NVIDIA Corporation is strictly prohibited.
#

if [ "$#" -ne 1 ]; then
    echo "Usage: $0 <Install Folder>"
    exit
fi
folder="$1"
user="nvidia"
passwd="nvidia"

echo "** Remove other OpenCV first"

This file has been truncated. show original

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

Thanks.

Hodu · October 12, 2020, 11:48pm

Hello,

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

Thank you.

nadeemm · October 18, 2021, 5:36pm