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The Comparisons of OpenCL and OpenMP Computing Paradigm |
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PP: 333-340 |
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Author(s) |
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Slo-Li Chu,
Chih-Chieh Hsiao,
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Abstract |
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| Graphics processing units (GPUs) in a computer system are increasingly adopted to create a realistic environment in 3D
applications. Despite the extremely high parallelism of these devices with a tremendous amount of processing elements, GPUs are
seldom used in scientific applications owing to their difficulty in programming. Additionally, vendor-provided APIs are too specific to
cross platform. An open standard, OpenCL, has subsequently been developed to provide universal APIs and programming paradigms
for various GPUs. This work demonstrates the capabilities of OpenCL with several platforms, based on a preliminary example. The
proposed benchmarks with different attributes are implemented by OpenMP and OpenCL sequentially to compare their differences.
The benchmarks are then targeted on several GPUs and conventional servers. Experimental results indicate that inexpensive GPUs
perform better than servers if OpenCL paradigms are adopted. |
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