Reuben Budiardja is a computational scientist in the National Center for Computational Sciences at Oak Ridge National Laboratory. He earned his doctorate degree from the University of Tennessee in Knoxville, Tennessee in computational astrophysics. He has broad research interests ranging from the development of large-scale astrophysics simulation code to investigate the mechanism of core-collapse supernovae, to developing system tools to understand application motifs, usage, and performance on supercomputers. Throughout his career, he has collaborated with application scientists from various disciplines helping them to achieve their scientific objectives by exploiting supercomputing capabilities. Reuben has helped users to efficiently run NAMD on a variety of leadership platforms for the NSF and the DOE, including, most recently, on OLCF Summit.