GPUs were first developed and marketed to gamers.

In the last half decade or so, GPUs have proven themselves quite useful in deep learning applications.

Why is that?

In the term ‘Graphics Processing Unit’, ‘Graphics’ refers to rendering an image at specified coordinates on a 2d or 3d space. A viewport or viewpoint is a viewer’s perspective of looking to an object depending upon the type of projection used. Rasterisation and Ray-tracing are some of the ways of rendering 3d scenes, both of these concepts are based on a type of a projection called as perspective projection. What is perspective projection?