消息传递型MPSoC通信过程分析及其优化设计  

Analysis and Design Optimization of Communication Process on Message-Passing-Based MPSoC

作　　者：付方发[1] 王进祥[1] 王良[1] 吴子旭[1] 喻明艳[1] 

机构地区：[1]哈尔滨工业大学微电子中心,哈尔滨150001

出　　处：《计算机辅助设计与图形学学报》2011年第10期1680-1689,共10页Journal of Computer-Aided Design & Computer Graphics

摘　　要：通过分析消息传递型MPSoC通信过程,总结出提高通信性能的有效途径——降低一对多消息发送延迟和提高多条消息并发接收效率.从减少数据拷贝延迟的角度提出了基于硬件抽象层广播优化策略,有效地降低了一对多消息发送延迟;针对并发接收瓶颈,充分考虑减少交互次数和提高长消息通信效率,提出一种基于查找表和DMA模式相结合的接收策略.实验结果表明,广播优化策略及接收策略均能明显提高性能;在64×64的矩阵乘法中,采用优化策略整体性能提高接近1.5倍.By analyzing the message-passing communication process on MPSoC, efficient ways to enhance communication performance are concluded, which are reducing one-to-many message sending latency and improving efficiency of concurrently receiving multiple messages. A broadcast optimization strategy based on the hardware abstraction level to cut down the cost of data copy is proposed, which decreases one-to-many message sending latency efficiently. Fully taking into consideration reducing interaction times and improving the efficiency of long message communication when dealing with the bottleneck of concurrently receiving multiple messages, a novel network interface （NI） receiving strategy that combines a lookup table （LUT） mechanism and DMA mode is presented. Experimental results show that both broadcast optimization strategy and NI receiving strategy can achieve better performance. In a 64 × 64 matrix multiplication, the overall performance is increased approximately by 50%.

关 键 词：多核 通信 广播 查找表 

分 类 号：TN402[电子电信—微电子学与固体电子学]