Leadership

David Hudak
Executive Director

David E. Hudak, Ph.D., is the Executive Director of the Ohio Supercomputer Center. In this role, he directs the OSC Leadership Team and overall OSC strategy. He previously was OSC's director of supercomputer services and program director for cyberinfrastructure and software development. 

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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 Software Applications and Manager of the Scientific Applications group at the Ohio Supercomputer Center. Tomko also serves on the steering committee for the Midwest Research Computing and Data Consortium and is a member of the leadership team...

Alan Chalker
Director of Strategic Programs

Alan Chalker, Ph.D., is Director of Strategic Programs at the Ohio Supercomputer Center (OSC). In this role he is responsible for many of OSC’s innovative efforts and initiatives, including in the areas of business development and relationship management. Chalker also coordinates many of the...

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...

Troy Baer
HPC Operations Manager

Troy Baer is the HPC Operations Manager at the Ohio Supercomputer Center (OSC). In this role, he is responsible for leading OSC’s HPC Systems Operations team, which handles the day-to-day operation and maintenance of the center’s HPC clusters and infrastructure.

Before taking on the HPC...

Tammi Hysell
Grants and Contracts Management Analyst

Tammi Hysell is the Grants and Contracts Management Analyst at the Ohio Supercomputer Center (OSC). In her role, she is responsible for directing the daily administrative functions and office operations for the OSC administration. She also supports OSC’s grant proposal submissions and award...

Summer Wang
Senior Client Engineer

Summer Wang, Ph.D., is the Senior Client Engineer of the HPC Client Services team at the Ohio Supercomputer Center (OSC). Wang provides guidance and technical expertise to the help desk team to achieve operational excellence in support of OSC clients. She works with OSC clients closely to help...

Heechang Na
Scientific Applications Operations Manager

Heechang Na, Ph.D., is the Scientific Applications Operations Manager at the Ohio Supercomputer Center (OSC). In his role, he is responsible for managing the comprehensive operations for providing optimal scientific software application environments to academic and industry clients. Leveraging...

Chase Eyster
Business Development Representative

Chase Eyster is a Business Development Representative at the Ohio Supercomputer Center (OSC). Working with academic, nonprofit, government and commercial researchers, he is often the initial contact for potential clients interested in access to OSC’s leading-edge high performance computing...