Nvidia Drivers and GPU

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http://askubuntu.com – I've a laptop with an Nvidia optimus graphic card (GEForce GT 630m) with Ubuntu 12.04 installed. After a while of looking around, I found that the optimus controller for linus is bumblebee, so I installed it. I would like to know whether is possible to perform GPU calculations using this driver, or Should I install the Nvidia driver? In a first try I installed the Nvidia driver, but it didn't work as expected. Thank you! (HowTos)