  As high energy physics experiments reach higher luminosities and intensities,
the computing burden for real time data processing and reduction grows.
Following the developments in the computing landscape, multi-core processors
such as graphics processing units (GPUs) are increasingly used for such tasks.
These proceedings provide an introduction to the GPU architecture and describe
how it maps to common tasks in real time data processing. In addition, specific
use cases of GPUs in the trigger systems of five different high energy physics
experiments are presented.
