August 7, 2020

[Note] CUDA on Ubuntu 20.04

Install Options

A couple of ways to install CUDA:

  1. get everything from NVIDIA CUDA site
  2. apt-get
  3. docker


For the latest CUDA version,  do method #1.  For easier way, #2.  I chose to do #2.  But after went through it, I'm not sure if it's really easier. 

And #2 method, the CUDA version is 10.1.  I haven't tried docker method.



Checking driver version:

$ nvidia-smi

Fri Aug  7 18:35:38 2020      
| NVIDIA-SMI 440.100      Driver Version: 440.100      CUDA Version: 10.2     |
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|   0   Quadro P2000        Off  | 00000000:09:00.0  On |                  N/A |
| 53%   47C    P8     7W /  75W |    663MiB /  5057MiB |     17%      Default |

Install packages using apt-get

$ sudo apt-get install build-essentials nvidia-cuda-toolkit

Check nvcc version:

$ nvcc --version

nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2019 NVIDIA Corporation
Built on Sun_Jul_28_19:07:16_PDT_2019
Cuda compilation tools, release 10.1, V10.1.243

Install cudnn

  1. Download cudnn,
  2. uncompress
  3. sudo cp cuda/include/cudnn.h /usr/lib/cuda/include/
    sudo cp cuda/lib64/libcudnn* /usr/lib/cuda/lib64/
    sudo chmod a+r /usr/lib/cuda/include/cudnn.h /usr/lib/cuda/lib64/libcudnn*

Install sample codes

Using apt-get, it doesn't come with sample codes.  For installing Kinect2 (will be on another posting), the sample is needed.  Install only if you need it.

Download from github, 

And store it anywhere you want.  Note that some other dependent code may look for it in a certain path, such as /usr/local/cuda-X-Y...

A couple more things to do:


nvcc is installed in /usr/bin/  -- examples and some programs I use (sorry didn't write it down and forgot what it was) looks for it in /usr/local/cuda/bin.  Create a sym link there.

[2] vi .vashrc

export LD_LIBRARY_PATH=/usr/lib/cuda/lib64:$LD_LIBRARY_PATH
export LD_LIBRARY_PATH=/usr/lib/cuda/include:$LD_LIBRARY_PATH



CUDA Samples


Nvidia Docker


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