Welcome to the CLOGS website
CLOGS 1.2.0 apparently does not work on at least one RadeonHD card (#23). If this happens, use 1.1.0 until it is fixed.
CLOGS is a library for higher-level operations on top of the OpenCL C++ API. It is designed to integrate with other OpenCL code, including synchronization using OpenCL events. Currently only two operations are supported: radix sorting and exclusive scan. Radix sort supports all the unsigned integral types as keys, and all the built-in scalar and vector types suitable for storage in buffers as values. Scan supports all the integral types. It also supports vector types, which allows for limited multi-scan capabilities.
For more information, see
To get an idea of sorting performance, here's a graph: