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The Cornell University Center for Advanced Computing reports to the Office of the Vice Provost for Research and Innovation.


David Lifka

David is the Director of the Cornell Center for Advanced Computing and Vice President for Information Technologies and Chief Information Officer of Cornell University. Lifka is the Coordinator of Architecture and Design for XSEDE, the National Science Foundation’s program providing advanced cyberinfrastructure systems and services to US scientists and engineers. He is an HPC industry veteran with over twenty years of experience in management and technology leadership positions at Cornell and Argonne National Laboratory. His areas of expertise include cloud computing, sustainable models for academic research computing facilities, parallel job scheduling and resource management systems, data management, high throughput systems, and Web services. Lifka has a Ph.D. in Computer Science from the Illinois Institute of Technology and serves on a number of academic and corporate advisory boards. His scheduling technologies have been commercially licensed and he has received a ComputerWorld/Smithsonian award for innovations in IT.

Richard Knepper
Deputy Director

Rich leads the center planning and operations with a focus on meeting the evolving needs of Cornell researchers and the broader scientific community. He joined CAC in 2017, coming from Indiana University where he earned a PhD in Informatics and managed Campus Bridging and Research Infrastructure. Rich is currently managing Cyberinfrastructure Resource Integration for the NSF XSEDE project. His research interests include cyberinfrastructure organization and the relationship between resources and scientific outcomes, HPC and cloud systems operations and management, application containerization, social network analysis, and the ethnography of virtual organizations.

Resa Reynolds
Associate Director, Systems & Operations

Resa and her systems team design, deploy, operate, and optimize the performance of CAC high-performance computing clusters and on-demand cloud computing services--Red Cloud and Red Cloud Secure. Her responsibilities include supporting Cornell faculty and student researchers, federal agency awards, e.g., the NSF XSEDE YUM repository, and Partner Program projects. Her expertise includes HPC architectures, networking, large-capacity storage systems, and systems software and tools. Resa led the installation of the first Dell high-performance computing cluster in the U.S., Previously she was lead systems analyst for the Cornell Institute for Social and Economic Research. You'll find Resa on her Harley when she's not managing your systems.

Susan Mehringer
Associate Director, Consulting

Susan leads a team of professionals that provide web, database, programming, code improvement, cloud application enablement, and education and outreach consulting services. Her team is also responsible for providing training to our clients and the national HPC community. Susan was an early proponent of online learning and is an invited speaker on that topic and other advanced information technologies.

Paul Redfern
Associate Director, Strategic Partnerships

Paul manages campus and strategic relations for the Center, as well as Web communications, media relations, proposals, and the Partner Program. He is one of the authors of a national report on cloud computing. Previously, Paul held management positions in the real-time simulation industry, working on projects for NASA, the commercial airlines, and the healthcare industry. Prior to that, he provided communications and new business consulting to IBM, Chicago Pneumatic, and others businesses. Paul’s postgraduate studies were at Syracuse University. He may be reached at 607-227-1865 or by email