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OpenCL is an open standard for parallel programming of heterogeneous computedevices, such as GPUs, CPUs, DSPs or FPGAs. However, the verbosity of its Chost API can hinder application development. In this paper we present cf4ocl, asoftware library for rapid development of OpenCL programs in pure C. It aims toreduce the verbosity of the OpenCL API, offering straightforward memorymanagement, integrated profiling of events (e.g., kernel execution and datatransfers), simple but extensible device selection mechanism and user-friendlyerror management. We compare two versions of a conceptual application example,one based on cf4ocl, the other developed directly with the OpenCL host API.Results show that the former is simpler to implement and offers more features,at the cost of an effectively negligible computational overhead. Additionally,the tools provided with cf4ocl allowed for a quick analysis on how to optimizethe application.

cf4ocl: a C framework for OpenCL