Jorji Nonaka is currently a technical scientist in the Operations and Computer Technologies Division at the RIKEN Center for Computational Science (R-CCS), Kobe, Japan. He received his B.Sc. and M.Sc. degrees in Computer Science from University of Brasilia, Brazil, and his Ph.D. degree in Informatics from Kyoto University, Japan, in 2006. His current activities are mainly focused on the visualization, analysis, and evaluation.