The 3rd International Conference on High Performance Computing and Applications 2015 (HPCA2015) to be held on July 26-30, 2015 in Shanghai, China, will serve as a forum to present current work by researchers and software developers from around the world as well as to highlight activities in the high performance computing area. It aims to bring together research scientists, application pioneers, and software developers to discuss problems and solutions and to identify new issues in this area. The conference will emphasize both design and analysis of high performance computing algorithms, tools, platforms, and their scientific, engineering, medical and industrial applications.