15

I have installed cuda8.0, the latest version. I followed the procedure provided by Nvidia; but, when I type the command nvcc --version it says nvcc is not installed!

What do I do now?

  • do a which nvcc see if it returns any thing... – George Udosen Feb 21 '17 at 4:45
  • No it didnt return – user6889367 Feb 21 '17 at 4:46
  • That means it didn't install well or is not in your PATH, find where it is with whereis nvcc.. – George Udosen Feb 21 '17 at 4:49
  • it only displayed "nvcc: " – user6889367 Feb 21 '17 at 4:56
  • Close and launch terminal and try nvcc --version to be sure – George Udosen Feb 21 '17 at 5:01
33

The problem is [ based on the link you provided] you haven't added it the .bashrc. file so it can be seen:

  1. From the terminal:

    nano /home/username/.bashrc
    
    # or
    
    nano /home/$USER/.bashrc
    
  2. Inside there add the following:

    export PATH=/usr/local/cuda-8.0/bin${PATH:+:${PATH}}$ 
    export LD_LIBRARY_PATH=/usr/local/cuda-8.0/lib64${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}
    
  3. Then do the following to save and close the editor:

    On you keyboard press the following: 
    
    ctrl + o             --> save 
    enter or return key  --> accept changes
    ctrl + x             --> close editor
    
  4. Now either do source .bashrc or close and open another terminal

  5. Now run nvcc --version

Information:

  • .bashrc: is the file read by the terminal before opening and its found in the /home/$USER diretory of the user in question.
  • the . before the file means its hidden from view unless you instruct you file manager to show hidden files
4

The above solution by @George Udosen is fine. If you want to save the manual procedure, you can automize it by the following:

1.create a file "add_to_bashrc"

export CUDA_HOME=/usr/local/cuda
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/cuda/lib64:/usr/local/cuda/extras/CUPTI/lib64
export PATH=$PATH:$CUDA_HOME/bin

2.create a shell script "automate.sh":

(... some installation procedure ...)

cat add_to_bashrc >> ~/.bashrc
. .~/.bashrc

Then you just need to run your shell script

sh automate.sh
0

The answer from @George Udosen is perfect.

Just for increment it, you can also export to /usr/local/cuda which is a symbolic link to /usr/local/cuda-10.1, based on this answer. So, you can also write:

export PATH=/usr/local/cuda/bin${PATH:+:${PATH}}$ 
export LD_LIBRARY_PATH=/usr/local/cuda/lib64${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}

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