【摘要】 通信效率的高低直接影响并行系统的性能,计算与通信重叠则可显著降低通信开销,提高系统性能。由内嵌向量处理器的V-PIM构成的并行系统结合了向量和PIM的结构优势,简化了PIM处理器的设计并可较好地解决“存储墙”问题。为了支持在执行向量指令时使计算与通信重叠,提出了基于V-ParcelSplitting的通信机制,可根据向量元素在V-PIM并行系统中的分布情况自动选择降低通信量的通信方式。文章描述了V-ParcelSplitting的处理流程并给出简单的评测结果。更多还原

【Abstract】 The efficient of communication in parallel system is a key factor in whole system performance and the overlapping of computation and communication is a well-know approach to reducing communication traffic and improve system performance.To support the overlapping of computation and communication in V-PIM based parallel system,V-Parcel Splitting communication mechanism is presented.Based on the analysis of vector elements distribution,V-Parcel Splitting can dynamically generate V-Parcel communication package to transfer data or operations so as to local the computation,minimum the communication,and maximum the performance.The procedure and characteristics of the V-Parcel Splitting is described.更多还原