Part I: Parallel Computer Memory Access Models Uniform Memory Access( UMA ysical memory is uniformly shared by processors All processors have equal access time to all memory words UMA is suitable for general-purpose or time-sharing applications UMA multiprocessor model is the following Processors P System Interconnect (Bus, Crossbar, Multistage network vO SM1 SMm Shared Memory NHPCC(Hefei)·USTC· CHINA glchenaustc edu.ci 1-14NHPCC(Hefei) •USTC •CHINA glchen@ustc.edu.cn 1 -14 Part I : Parallel Computer Memory Access Models