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Heterogeneous computing machines consisting of a CPU and one or more GPUs are increasingly being used today because of their higher performance-cost ratio and lower energy consumption. To program such heterogeneous systems, OpenCL has become an industry standard due to the portability across various computing architectures. To exploit the computing capabilities of heterogeneous systems, application developers are porting their cluster and Cloud applications using OpenCL. With the increasing number of such applications, the use of shared accelerating computing devices (such as CPUs and GPUs) should be managed using an efficient load-balancing scheduling heuristic capable of reducing execution time, increasing throughput with high device utilization. Mostly, the OpenCL applications are suited (execute faster) on a specific computing device (CPU or GPU) and with varying data-sizes the …