The Tech Side of Pixar's 'Cars 2'

Clip from Cnet's coverage of the tech side of Pixar's 'Cars 2':

One of the keys to Pixar's ability to do what it does is the giant, powerful render farm located in its main headquarters building here. This is serious computing power, and on "Cars 2," it required an average of 11.5 hours to render each frame.

But some sequences were especially complex, particularly those involving ray tracing--which involves simulating light hitting surfaces, essentially "trying to simulate photons." And as a result, a huge amount of computing power was needed to process frames that took as much as 80 or 90 hours to render, Shah said. And that meant that the studio "bulked up our render farm."