David Hudak
Executive Director

David E. Hudak, Ph.D., is the executive director of the Ohio Supercomputer Center (OSC). He previously was OSC's director of supercomputer services and program director for cyberinfrastructure and software development. His research interests include high-level languages for parallel computing,...

Doug Johnson
Associate Director

Douglas Johnson serves as an associate director of the Ohio Supercomputer Center. Previously, he served at OSC as the chief systems architect and HPC Systems manager and, earlier, as a senior systems developer/engineer.

Johnson earned his bachelor's degree in Physics from The Ohio State...

Karen Tomko
Director of Research Software Applications

Karen Tomko, Ph.D., serves as director of Research and manager of the Scientific Applications group at the Ohio Supercomputer Center. Tomko also serves as an XSEDE Campus Champion for The Ohio State University. Her research interests include communication runtimes, application parallelization...

Alan Chalker
Director of Strategic Programs

Alan Chalker, Ph.D., is Director of Strategic Programs at the Ohio Supercomputer Center (OSC), as well as Director of Awesim, OSC’s industry outreach program. In this role he is responsible for all non-academic client relationships for OSC.

He also coordinates the preparation and...

Brian Guilfoos
HPC Client Services Manager

Brian Guilfoos serves as the HPC Client Services manager for the Ohio Supercomputer Center (OSC).

Guilfoos leads the HPC Client Services Group, which provides training and user support to facilitate the use of computational science by the center's user communities. Guilfoos also works...