Server CUDA toolkit multi version switching

Actually, through update-alternatives It can be realized cuda Version switch

1. View version

• see cuda toolkit edition

nvcc -V

Attention is big V

• Check the graphics card driver version and cuda edition
  Be careful cuda Version and cuda toolkit Version is not the same thing
  There are also people here cuda Version is the highest supported by the graphics card driver cuda edition

nvidia-smi

2. Download and install multiple versions cuda toolkit

Address ：https://developer.nvidia.com/cuda-toolkit-archive
Go in as shown in the figure below , With 10.2 For example

We choose the system model , With runfile For example , If the server directly wget If not , It can be used wget The following links are downloaded locally and then uploaded to the server , But it's bigger （2.5GB). Note that you also need to download the following two patches .

After uploading to the server , Let's install

sudo sh 

wait a moment , Input accept


Here, because the graphics card driver has been installed , You need to put Driver Get rid of it , Otherwise, an error will be reported . Because it's already installed Driver 了 , Therefore, re installation will conflict .
then install, Just a minute .
After installed , Input

ls /usr/local

You can see that two versions of cuda toolkit

3. Version switch

• First add to update-alternatives

sudo update-alternatives --install /usr/local/cuda cuda /usr/local/cuda-10.0 10
sudo update-alternatives --install /usr/local/cuda cuda /usr/local/cuda-10.2 20

Then switch the version

sudo update-alternatives --config cuda

Enter the digital switch version , It can be found that the free switching is successful