中图种学学计算机科学与术系 University of Science and Technology of China DEPARTMENT DF COMPUTE三巴 ENCE AND ECHNOLDD Introduction(2) Why parallelism has not led to widespread use? Conscious human thinking appears to be sequential to us The theory required for parallel algorithm in immature and was developed after the technology The hardware platform required for parallel algorithm are very expensive. Portability is much more serious issue in parallel programming than in sequential Why we need parallel algorithm? To increase computational speed To increase computational precision (to generate the fine mesh) To meet requirement of real time computation(weather forecasting NHPCC at Hefei 2021/2/6NHPCC at Hefei 5 2021/2/6 Introduction (2) ▪ Why parallelism has not led to widespread use? ▪ Conscious human thinking appears to be sequential to us. ▪ The theory required for parallel algorithm in immature and was developed after the technology. ▪ The hardware platform required for parallel algorithm are very expensive. ▪ Portability is much more serious issue in parallel programming than in sequential. ▪ Why we need parallel algorithm? ▪ To increase computational speed. ▪ To increase computational precision (to generate the fine mesh). ▪ To meet requirement of real time computation (weather forecasting)