Using Aparapi

Aparapi (https://github.com/aparapi/aparapi) is a Java library that supports concurrent operations. The API supports code running on GPUs or CPUs. GPU operations are executed using OpenCL, while CPU operations use Java threads. The user can specify which computing resource to use. However, if GPU support is not available, Aparapi will revert to Java threads.

The API will convert Java byte codes to OpenCL at runtime. This makes the API largely independent from the graphics card used. The API was initially developed by AMD but has been released as open source. This is reflected in the basic package name, com.amd.aparari. Aparapi offers a higher level of abstraction than provided by OpenCL.

Aparapi code is located in a class derived from the Kernel class. Its execute method will start the operations. This will result in an internal call to a run method, which needs to be overridden. It is within the run method that concurrent code is placed. The run method is executed multiple times...