介绍高性能计算机的关键技术和发展趋势。简要回顾高性能计算机的发展历史和当前形势，重点讨论大规模并行处理（MPP）所面临的挑战，包括可扩展性、友善性和可用性。介绍神威高性能计算机及其应用情况，并对如何发展我国高性能计算机提出一些初浅的看法。

This paper focuses on the trends of high performance computers. After reviewing the history and current situation of high performance computers, key technologies of massively parallel processing (MPP) including scalability, friendliness and availability are discussed. Then SUNWAY high performance computer and its applications are briefly introduced. Finally the viewpoints on developing high performance computers in China is presented.