Parallel Deblocking Filter for H.264/AVC on the TILERA Many-Core Systems
- Cite this paper as:
- Yan C., Dai F., Zhang Y. (2011) Parallel Deblocking Filter for H.264/AVC on the TILERA Many-Core Systems. In: Lee KT., Tsai WH., Liao HY.M., Chen T., Hsieh JW., Tseng CC. (eds) Advances in Multimedia Modeling. MMM 2011. Lecture Notes in Computer Science, vol 6523. Springer, Berlin, Heidelberg
For the purpose of accelerating deblocking filter, which accounts for a significant percentage of H.264/AVC decoding time, some studies use wavefront method to achieve the required performance on multi-core platforms. We study the problem under the context of many-core systems and present a new method to exploit the implicit parallelism. We apply our implementation to the deblocking filter of the H.264/AVC reference software JM15.1 on a 64-core TILERA and achieve more than eleven times speedup for 1280*720(HD) videos. Meanwhile the proposed method achieves an overall decoding speedup of 140% for the HD videos. Compared to the wavefront method, we also have a significant speedup 200% for 720*576(SD) videos.
KeywordsVideo decoding H.264/AVC Deblocking filter Parallel algorithm Many-core systems
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