| 高性能同构多核媒体处理器 |
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| 引用本文： | 奚杰,朱玥,陈杰.高性能同构多核媒体处理器[J].哈尔滨工业大学学报,2011,43(5):94-98. |
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| 作者姓名： | 奚杰 朱玥 陈杰 |
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| 作者单位： | 中国科学院微电子研究所;中国科学院微电子研究所;中国科学技术大学物理学院;中国科学院微电子研究所 |
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| 基金项目： | 国家高技术研究发展资助项目(2009AA011700) |
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| 摘 要： | 为了大幅提高处理器的处理能力,设计了一款5核结构的同构多核处理器并实现了H.264在多核处理器上的并行解码.该多核处理器采用1个CPU作为主控处理器,另外的4个CPU作为受控处理器被调用,5个CPU可以同时访问1块32 KWord的共享存储器,任意2个CPU之间可以通过邮箱、信号量、硬件锁实现点对点的通讯.其中,主控处...
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| 关 键 词： | 多核 邮箱 H.264 信号量 |
High-performance homogeneous media mutli-processor |
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| XI Jie,ZHU Yue and CHEN Jie.High-performance homogeneous media mutli-processor[J].Journal of Harbin Institute of Technology,2011,43(5):94-98. |
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| Authors: | XI Jie ZHU Yue and CHEN Jie |
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| Affiliation: | Institute of Microelectronics,Chinese Academy of Sciences,100029 Beijing,China;Institute of Microelectronics,Chinese Academy of Sciences,100029 Beijing,China; School of Physical Sciences,University of Science and Technology of China,230026 Hefei,China;Institute of Microelectronics,Chinese Academy of Sciences,100029 Beijing,China |
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| Abstract: | To improve processor’s computation capability heavily,one multi-core system with 5 CPUs is designed and H.264 is decoded on it parallely.One CPU is used to lead the other four CPUs.Five CPUs share one 32 KWord SRAM.Any two CPUs can communicate point to point through mailbox,semaphore,hardware lock.When decoding H.264,the leading CPU is used to parse the bit-stream and calculate the intra prediction mode,motion vector,boundary strength.Then,the decoded data is saved to shared SRAM.Other four CPUs fetch and solve one macro-block line each time.The simulation result shows that using the line parallel decoding algorithm,the five-cores system can achieve about 3.6 times acceleration than two-cores system.The line parallel decoding algorithm can also be used on other video protocol and it is universal. |
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| Keywords: | multi-core mailbox H 264 semaphore |
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