| 摘要: |
| 在嵌入式多媒体处理领域中,多处理器片上系统(multi-processor system-on-chip,简称MPSoC)的应用越广泛.多媒体处理MPSoC 通常采用“主处理器核+多个异构协处理器核”的主流体系结构.该结构兼顾了MPSoC 系统的通用性与灵活性、性能与功耗,但也向MPSoC 的性能优化方法提出了更高的要求.针对异构MPSoC 上的体应用算法,提出了一种MPSoC 多媒体处理性能优化方法.该方法经过应用特征分析、循环仿射划分、应用向MPSoC 各处理器核的映射,实现了优化的数据局部性与多级并行性,从而提高了异构MPSoC 上多媒体应用算法能.实验结果表明,该方法对于多媒体应用算法在异构MPSoC 上的处理性能优化方面取得了明显效果. |
| 关键词: 片上系统 多处理器片上系统 嵌入式系统 多媒体处理 |
| DOI：10.3724/SP.J.1001.2011.03847 |
| 分类号: |
| 基金项目:国家自然科学基金(90207019, 90707003) |
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| Performance Optimization of Application Algorithms for Heterogeneous Multi-Processor System-on-Chips |
|
ZHAO Peng, YAN Ming, LI Si-Kun
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School of Computer, National University of Defense Technology, Changsha 410073, China
|
| Abstract: |
| MPSoCs (multi-processor system-on-chips) are comprehensively applied in the embedded multimedia
processing field. Multimedia MPSoCs often adopt the “host processor+multiple heterogeneous synergistic
processor” architecture, which makes the trade-off between universality and flexibility. MPSoCs also take into
consideration both performance and power-consumption, but challenges the method of performance optimization of
System-on-Chip applications. This paper proposes an approach that improves the performance of application
algorithms running on heterogeneous MPSoCs. The approach includes three stages: Application feature analysis,
affine partitioning of kernel loops, and “application-architecture” mapping. It optimizes the multi-level parallelism
and data locality of application algorithms to improve MPSoC performance. Experimental results show that the
proposed approach can greatly improve the multimedia processing performance on heterogeneous MPSoCs. |
| Key words: system-on-chip multi-processor system-on-chip embedded system multimedia processing |
