cuda installation in linux

1、download cuda toolkit and cuda sdk;

http://developer.nvidia.com/cuda-toolkit-32-downloads

drivers/toolkits/sdk all of these can be downloaded from the up url.

2、install the nvidia driver:

if you are in a GUI environment, exit the GUI((press ctrl-alt-backspace; 

some distributions require you to press this sequence twice in a row, others have 

disabled it altogether in favor of a command such as sudo /etc/init.d/gdm 

stop).);at the command line, turn off x windows via /sbin/init 3 then run the driver installation

package from the command line as a superuser. restart the GUI environment(startx or init 5)

3、install the cuda toolkit by running the downloaded .run file as a superuser. then it will

install defaults to /usr/local/cuda.PATH needs to include /usr/local/cuda/bin. LD_LIBRARY_PATH

needs to contain either /usr/local/cuda/lib or /usr/local/cuda/lib64 for 32- or 64- operating systems.

4、open file ~/.profile

export PATH=/usr/local/cuda/bin:$PATH 

export LD_LIBRARY_PATH=/usr/local/cuda/lib:$LD_LIBRARY_PAT

but some times, you would failed if you do as like upper. when you compile in the C directory, and across

the following error:

CUDA-Multiforcer: error while loading shared libraries: libcudart.so.2: cannot open shared object file: No such file or directory

then you can try the following method and correct this error:

modify file ld.so.conf in the /etc directory and add the following info:

/usr/local/cuda/lib or /usr/local/cuda/lib64

cuda is defaults to install in /usr/local

after modify file ld.so.conf, you must run ldconfig

ldconfig

ldconfig -v | grep cuda

then you will see some info and then make will be ok.

5、verify the installation

check cuda toolkit installation: nvcc -V.

6、running some exemples

in C/bin/linux/release, some many testings there. you can use the following commands to verify the sdk

is Ok or no.

for example:

sudo ./deviceQuery

then you will get enough information about you computer.

some time, when you compile the sdk, maybe you will get the error: /usr/bin/ld: -lGL can't find

because of the opengl in linux is messa, so only enter C/common directory and modify file common.mk,

and modify the -lGL into -lglut, then compile sdk will be OK.