We will take a look what actually a GPU is. In the beginning we will have a small introduction on how it has evolved throw years. We will see how it can be utilized in the Java world. There will be a small intro to the world of OpenGL. And then we are going to move to CUDA and OpenCL technologies for general purpose massive computations on regular desktops or cloud machines. We will see what are the advantages and what are the main drawbacks, how can we ease the use from java and utilize GPUs in the clouds. We will make some strange experiments and use JVM as a “glue” to access low level APIs.