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Editor to share with you how to install Ubuntu14.04 CUDA7, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's learn about it!

Environment

Ubuntu 14.04 x64

Brief introduction

CUDA, whose full name is Compute Unified Device Architecture in English, is a computing platform launched by NVIDIA, a graphics card manufacturer. At present, computing is developing from CPU "central processing" to CPU and GPU "cooperative processing". In order to realize this new computing mode, NVIDIA invented the CUDA parallel computing architecture. The architecture is now being used on Tesla ®, Quadro ®, and GeForce ®GPU. Generally do graphics operation acceleration, the installation here is mainly for the later compilation of GPU acceleration using caffe.

Official introduction: http://www.nvidia.cn/object/cuda-cn.html

Verification

Use the following command to view the model of the video card

Lspci | grep-I nvidia

Then go to the URL (https://developer.nvidia.com/cuda-gpus) to verify whether it supports cuda. Some OEM (such as GTX 745) custom graphics card may not be found, you can go to the URL http://www.nvidia.cn/page/home.html direct search box to support cuda before you can continue. Don't think about the graphics card of ATI, it is not supported.

Installation package

Download link: https://developer.nvidia.com/cuda-downloads

Installation package: cuda_7.0.28_linux.run

The installation package is an integrated package, which includes nvidia driver installation package, cuda installation package, sample installation package, all of which do not need to be downloaded separately. You can see them by decompressing them using the following command

. / cuda_7.0.28_linux.run-- extract=extract_absolute_path

The unzipped files include:

NVIDIA-Linux-x86_64-346.46.runcuda-linux64-rel-7.0.28-19326674.runcuda-samples-linux-7.0.28-19326674.run

All installation here does not need to be unzipped. If you want to install the decompression separately, you can install it separately.

Installation

First enter the following command to enter another command line terminal

CTRL+ALT+F1

Close the graphical interface, if you do not close the next command to install directly, the system will report an error, prompting that there is still an X graphical interface running, or close or the installation steps cannot be carried out.

Sudo service lightdm stop

To install the software, enter the following command, many prompts will appear, and the Nvidia graphics card driver, cuda,cuda sample and opengl will be installed. The installation path is available by default.

Sudo sh cuda_7.0.28_linux.run

Start the graphical interface, so that there will be a familiar login interface, enter the password to enter the system is considered successful, if you have been in the login interface cycle is to encounter the following problem.

Sudo service lightdm start environment variable

After successful installation, you also need to set the environment variable of cuda.

Open a file

Sudo gedit / etc/profile # # individuals prefer to put environment variables in / etc/profile, like'~ / .bashrc'

Add at the end of the file

Export CUDA_HOME=/usr/local/cuda-7.0export PATH=$CUDA_HOME/bin:$PATHexport LD_LIBRARY_PATH=$CUDA_HOME/lib64:$LD_LIBRARY_PATH

Execute the following command to make the environment variable take effect immediately

Source / etc/profilelib library path

This step seems to be fine without adding it, but it is better to add it for the sake of insurance.

Open a file

Sudo gedit / etc/ld.so.conf.d/cuda.conf

Usually create a new file and add it to the file

/ usr/local/cuda-7.0/lib64

Execute the following order to take effect immediately

Sudo ldconfig test

Check the driver version of the video card (in addition to the following command line mode, you can also open 'NVIDIA X Server Settings',' in the search bar, which should correspond to the version number of the unzipped file 'NVIDIA-Linux-x86_64-346.46.run' above.

Cat / proc/driver/nvidia/version

To check the version of the nvcc compiler, it should correspond to the version number of the unzipped file 'cuda-linux64-rel-7.0.28-19326674.run' above

Nvcc-VI sample code

Enter the sample installation directory

Cd ~ / NVIDIA_CUDA-7.0_Samples

Compilation, which may take a short time

Make

Running

Cd bin/x86_64/linux/release./deviceQuery

Result

problem

As mentioned above, do not update after you install the system, otherwise you will not be able to enter the desktop after installing cuda, and uninstalling cuda will not work at all. However, it does not seem to affect the normal use of functions (because it is installed after the update on the server, local graphical login is not allowed to enter the desktop, but the ssh graphical connection is not affected), if you have to use the graphical interface locally, the only way is to reinstall the system. The system was reinstalled several times because of this problem. I don't know what caused it, and I certainly don't know how to solve it. Friends who know can leave a message.

These are all the contents of the article "how to install Ubuntu14.04 CUDA7". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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