Toshiyuki Imamura is currently a team leader of Large-scale Parallel Numerical Computing Technology at the Center for Computational Science, RIKEN. He received his Diploma (M.Sc.) and Doctorate (Ph.D.) in applied systems and sciences in 1993 and 2000, respectively, both from Kyoto University, Japan. He was a Researcher at the Center of Computational Science and Engineering, Japan Atomic Energy Research Institute in 1996-2003, a visiting scientist at HLRS (Stuttgart, Germany) in 2001-2002, and an associate professor at the University of Electro-Communications in 2003-2012. Since 2012 he has been with RIKEN. His research interests include high-performance computing, automatic-tuning technology, eigenvalue computation (algorithm/software/applications), etc. His project team was nominated for one of the finalists of Gordon Bell Prize in 2005 and 2006.