OSC - Key Persons
Job Titles:
- Member of the Leadership Team
- 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 submission of many of the center's grant proposals and manages a variety of smaller research projects, serving as the PI or co-PI on several funded programs at any given time, including OSC's widely adopted Open OnDemand platform.
Additional responsibilities include helping to coordinate OSC's appearance at the annual supercomputing conference and being the Co-Director of OSC's Summer Institute program for high school students, of which he is an alumnus.
Chalker previously served as assistant academic lead for the Department of Defense's (DoD) High Performance Computing Modernization Program in the areas of Integrated Modeling & Test Environments and Signal & Image Processing. In this role, he coordinated a small team of researchers at OSC that worked on DoD projects and training courses involving technologies, such as parallel high-level languages, data sharing and mining and SIP algorithm parallelization.
In 2006, Chalker won the semiannual MATLAB programming contest, which is held by the Mathworks and involves dozens of MATLAB expert programmers from around the world competing against each other over a week-long period.
Prior to OSC, Chalker spent five years as the lead controls engineer with a public company, Embrex Inc. At Embrex, he worked on a research and development project developing an automated chicken gender determination process, receiving three federal patents.
In 1998, Chalker earned a bachelor's degree in electrical and computer engineering from The Ohio State University. He received a doctoral degree in biomedical engineering at The University of North Carolina at Chapel Hill in 2005.
Areas of Expertise
Client Relationship Management
Job Titles:
- Client Services Manager
- Member of the Leadership Team
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 directly with OSC clients to help convert computer codes, develop batch scripting, compiling and code development so that these researchers can efficiently use the center's supercomputers and licensed software.
Guilfoos developed and delivered training in MATLAB as a part of the U.S. Department of Defense High Performance Computing Modernization Program support.
Prior to joining OSC, he was contracted by the Air Force Research Laboratory to focus on software development in support of unmanned aerial vehicle (UAV) interface research. He was a key technical member of a team that was awarded the 2004 Scientific and Technological Achievement Award by the AFRL Human Effectiveness Directorate.
Guilfoos earned a master's degree in public policy and administration in 2014 and a bachelor's degree in electrical engineering in 2000, both from The Ohio State University.
Job Titles:
- Senior Scientific Application Engineer
Job Titles:
- Director of Strategic Programs / OSC Research
Job Titles:
- Software Student Assistant
Job Titles:
- Executive Director
- Member of the Leadership Team
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, HPC software engineering and network protocol design.
Prior to his appointment at OSC, Hudak served as associate professor of computer science and engineering at Ohio Northern University from 1992-2000 and as chairman of the department of computer science from 1998-2000. He was named to the Reichelderfer endowed chair in computer science at ONU. Hudak has consulted with the Computational Fluid-Dynamics Laboratory at Wright-Patterson Air Force Base and has served as chairman of the Parallel Computing Curricula for Ohio College Educators group.
Hudak earned a bachelor's degree in mathematics from Bowling Green State University and holds master's and doctoral degrees in computer engineering from the University of Michigan.
Areas of Expertise
Cyberinfrastructure
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 University.
Job Titles:
- Business Development Manager / OSC Research
Job Titles:
- Client Services Student Assistant
Job Titles:
- Client Services Administrative Specialist
Job Titles:
- Grants and Contracts Management Analyst / Administration
Job Titles:
- Business Development and Marketing Student Assistant / OSC Research
Job Titles:
- Machine Learning Engineer
Job Titles:
- Member of the Leadership Team
- 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 and tuning, and programming models for many-core coprocessors and accelerators.
Prior to joining OSC, Tomko spent 11 years as a faculty member in computer science and engineering at University of Cincinnati and Wright State University. She has been working in collaboration with computational scientists for more than 20 years, including projects with Ford Motor Co. and the Air Force Research Laboratory. Her experience with scientific applications ranges from crash simulation to fluid dynamics to quantum many body physics. Tomko is interested in computational science education and has participated in regional and national efforts to develop curricula for degree and certificate programs.
Tomko earned a doctorate and a master's degree in Computer Science and Engineering, as well as a bachelor's degree in Computer Engineering, all from the University of Michigan.
Job Titles:
- Client Services Student Assistant
Job Titles:
- Developer Relations Program Manager
Job Titles:
- Client Service Specialist
Job Titles:
- Web & Interface App Engineer
Job Titles:
- Client Service Specialist
Job Titles:
- Client Services Student Assistant
Job Titles:
- Director of Research Software Applications / OSC Research
Job Titles:
- Senior Systems Specialist
Job Titles:
- Quality Assurance and Security Engineer