Taisuke Boku has been researching HPC system architecture, system software, and performance evaluation on various scientific applications. He is currently the director of Center for Computational Sciences, University of Tsukuba, a co-designing center with both application researchers and HPC system researchers. He has been playing a central roles for development of original supercomputers in the center including CP-PACS (ranked as number one in TOP500 in 1996), FIRST, PACS-CS, HA-PACS and Cygnus systems, the representative supercomputers in Japan. The recent system Cygnus is the world first multi-hybrid accelerated system with GPU and FPGA together. He has been the President of HPCI (High Performance Computing Infrastructure) Consortium in Japan in 2020-2022. He was a member of system architecture working group of Fugaku supercomputer development. He received ACM Gordon Bell Prize in 2011.