lenovo Y470 with both Intel and NVIDIA GEFORCE550M graphic cards: how to get Cuda work?

[hong115]

I'm new to CUDA.

Now I have a lenovo Y470 and I tried to install cuda from http://developer.nvidia.com/cuda-downloads.

First I use windows and follow the following step strictly:

http://developer.download.nvidia.com/compute/DevZone/docs/html/C/doc/CUDA_C_Getting_Started_Windows....

But then when I tried to verify the installation and compile the sample binary cuda codes, it constantly gives out error message as: no-cuda-capable device.

???No idea how to fix that

Second I tried to install linux Ubuntu12.04 on the computer and try to install cuda in a linux system. By following the steps in following pdf, again I got stuck in the process of verifying the installation and compiling the sample binary cuda codes. And the error message now is : Nvcc not found. 

BUT, when I tpyed nvcc -V, it gives out clearly the version of nvcc and the nvcc is clearly created under /usr/local/cuda/bin. Both PATH and LD_LIBRARY_PATH are added as the pdf suggests.

http://developer.download.nvidia.com/compute/DevZone/docs/html/C/doc/CUDA_C_Getting_Started_Linux.pd...

??No idea how to fix that either

Currently, I think the problem may be that two graphic cards are working automatically such that I could not assign cuda specifically to Geforce550M card.

Does anyone know how to fix that problem or confirm me that Y470 can or cannot run cuda at all?

[hong115]

Any idea?

[krishad90]

CUDA is used for enhancing performance of application like photoshop, aftereffects, while rendering videos, encoding or converting videos. Once you switch your graphics mode to nvidia GPU, it should work automatically for applications that support CUDA. As far as i know there is no games that support CUDA.

u can see in the task bar icon that shows any application that use NVIDIA GPU. u can also goto nvidia control panel click manage 3D settings and select program settings  and manually set the "prefered graphics processor" to nvidia for the application u wish. Try this and see.