A high performance parallel DCT with OpenCL on heterogeneous computing environment |
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| Authors: | Cheong Ghil Kim Yong Soo Choi |
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| Affiliation: | 1. Department of Computer Science, Namseoul University, 91 Seongwhaneub, Seobukgu, Cheonan, Chungnam, South Korea
2. Graduate School of Information Security, Korea University, 15 Anamro Seongbukgu, Seoul, South Korea
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| Abstract: | A noteworthy thing in desktop PCs is that they can provide a great opportunity to increase the performance of processing multimedia data by exploiting task- and data-parallelism with multi-core CPU and many-core GPU. This paper presents a high performance parallel implementation of 2D DCT on this heterogeneous computing environment. For this purpose, Intel TBB (threading building blocks) and OpenCL (Open Compute Language) are utilized for task- and data-parallelism, respectively. The simulation result shows that the parallel DCT implementations far the serial ones in processing speed. Especially, OpenCL implementation shows a linear speedup, a typical SIMD characteristic as the increase of 2D data sets. |
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