计算与通信重叠的V-Parcel Splitting机制  

V-Parcel Splitting Communication Mechanism of Overlapping Computation and Communication

作　　者：温璞[1] 范洁[2] 杨学军[1] 

机构地区：[1]国防科学技术大学计算机学院,湖南长沙410073 [2]湖南广播电视大学网络中心,湖南长沙410004

出　　处：《微电子学与计算机》2006年第9期29-31,共3页Microelectronics & Computer

基　　金：国家"863"高技术研究发展计划基金项目(2002AA1Z2105);国防科学技术大学校预研项目(CX0406018)

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。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-Pareel 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.

关 键 词：PIM 通信机制 并行系统 向量 

分 类 号：TP31[自动化与计算机技术—计算机软件与理论]