中种学林水学计算机科学与术系 versity ResearchhIssuesna parallel computation models(1) PRAM(Parallel Random Access Memory SIMD-SM, Used for fine grain parallel computing Centralized shared memory, Globally synchronized Advantages Suitable for representing and analyzing complexity of parallel algorithms, Simple to use, hiding the most of low level details of parallel computer(communication, ynchronizationetc) Disadvantages Unsuitable for mimd computers Unrealistic to neglect the issues of memory contention communication delay etc NHPCC at Hefei 2021/2/6NHPCC at Hefei 9 2021/2/6 Research Issues – Parallel computation models(1) ▪ PRAM(Parallel Random Access Memory) ▪ SIMD-SM, Used for fine grain parallel computing, Centralized shared memory, Globally synchronized. ▪ Advantages ▪ Suitable for representing and analyzing complexity of parallel algorithms, Simple to use , hiding the most of low￾level details of parallel computer (communication, synchronization etc. ). ▪ Disadvantages ▪ Unsuitable for MIMD computers, Unrealistic to neglect the issues of memory contention, communication delay etc