Full time research faculty and staff


Greg Beyer

Senior Systems Support Engineer

System Administration


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Research Scientist (I/II)

Research Computing Facilitator

Pam Buffington

Director of Research Cyberinfrastructure and Computing

John Eric Coulter, Ph.D.

Research Scientist

Cyberinfrastructure Integration Architect

Philip R. Florio

Systems IT Architect Lead

System Administration

Matt Guidry

Senior Systems Support Engineer

System Administration

Eric Harmon

Systems Support Engineer Lead

System Administration

Aaron P. Jezghani, Ph.D.

Ph: 404-894-3507

Research Scientist

Scheduler Architect

Ruben Lara

Ph: 404-385-5604

Senior Systems Support Engineer Manager

Research Cyber Infrastructure Manager

Fang (Cherry) Liu, Ph.D.

Ph: 404-385-0045

Senior Research Scientist

Interim Manager of Research Computing Facilitation

Lead Research Software Engineer

Adjunct Associate Professor, School of Computational Science and Engineering (College of Computing)

  • Ph.D. Computer Science (Specialize at Parallel and Distributed Computing), Indiana University at Bloomington

Dr. Liu has nearly 20 years of experience in High Performance Computing where she worked closely with world-class researchers in solving their computational needs on the large-scale computing system. She joined the Gatech PACE team in July 2012. She actively supports GT community on software integration, porting and optimization on PACE computing cluster, while she also served on multiple Ph.D. dissertation committees, and supervised dozens of students in their research projects, and trained the researchers.  Before joining Gatech, Dr. Liu was an assistant scientist at the Mathematics and Computational Science Division in the Department of Energy (USDOE) Ames Laboratory. Dr. Liu has extensive experience in multidisciplinary research, and her collaborations with domain scientists leads to successful scientific workflow and data management system. Her research interests broadly span software interface design, multi-physics and multi-code coupling, data management and provenance for scientific applications, big data analysis for research computing centers. 


Paul Manno


RBW-IT Professional


Allan Metts

Principal Architect

Allan is a Tech graduate who recently joined PACE in addition to his existing role on OIT's Digital Learning team. Prior to Tech he held Executive Leadership roles in private industry, focusing primarily on cloud software products and complex projects in the telecommunications, transportation, hospitality, and retail industries.

Craig Moseley

Ph: 404-385-2563

Senior IT Support Professional

Team Lead for Customer Experience and User Support

Trever Nightingale

Research Technologist II

Cloud Architect

Deepa Phanish, Ph.D.

Research Scientist

Research Computing Facilitator

  • Ph.D., Electrical and Computer Engineering, Georgia Institute of Technology
  • M.S., Electrical and Computer Engineering, Georgia Institute of Technology

Deepa joined the PACE team in June 2022, where she works closely with Georgia Tech researchers, facilitating their computational efforts and conducting outreach workshops. She has been actively participating in the Vertically Integrated Projects (VIP) program during her tenure at Georgia Tech, advising the Satdium-IoPT team and leading their sensor networks and machine learning projects. Prior to joining PACE, she was a post-doctoral fellow in Electrical and Computer Engineering at Georgia Tech working on estimation and detection problems in sensor networks. She also has extensive industry experience working as a network planning engineer at Cox Communications and embedded systems developer at PathPartner Technology. Her research areas of interest include high performance computational physics, network optimization, and hybrid modeling in machine learning. She has won numerous awards for her work including the Sigma Xi best Ph.D. thesis award at Georgia Tech.

Ronald Rahaman

Research Scientist 

Research Software Engineer


Semir Sarajlic

Ph: 404-894-1930

Senior Research Scientist

Team Lead for Architects and Software Engineers

Kenneth Suda

Senior Application Developer

Software Engineer (DevOps)

Jeffrey Valdez, M.S., M.B.E.

Research Scientist

Research Computing Facilitator

  • M.S., Psychology, Yale University
  • M.B.E., Bioethics, University of Pennsylvania
  • M.S., Computer Science, Georgia Institute of Technology

Jeffrey joined PACE's facilitation team in June 2022 with a broad, interdisciplinary background in biomedical research. His current research interests include high-performance computing (HPC), data science, and deep learning. Before joining PACE, he worked in the College of Computing at Georgia Tech with collaborators to develop HPC tools for the Rogues Gallery at the Center for Research into Novel Computing Hierarchies (CRNCH), computer vision tools for identifying social communication behaviors (such as nonverbal communication in social interactions), and recommender systems for healthcare with machine learning. Prior to Georgia Tech, he worked at the Brain Behavior Behavior Laboratory at the Perelman School of Medicine at University of Pennsylvania, collaborating on studies in psychiatry and neuroimaging focused on schizophrenia and mental illness.

Peter N. Wan

Senior Systems Support Engineer

Ph: 404-385-5614

User Support

Security and Compliance

System Administration

Michael D. Weiner, Ph.D.

Ph: (404)894-3566

Research Scientist

Research Computing Facilitator

  • Ph.D., Physics (Biophysics), Cornell University

Michael joined PACE’s facilitation team in June 2019. He has worked extensively with Georgia Tech researchers to enable their work employing computing through training workshops, user support, and more. Michael also supports PACE’s Instructional Cluster Environments (ICE), which offer HPC for academic courses and training workshops. Years after first encountering HPC, Michael remains in awe of its power, and he is enthusiastic about enabling others to harness it. He is always happy to meet with researchers to identify resources and opportunities to enable their research, including through PACE clusters, national ACCESS resources, and the Open Science Grid. Michael is a member of the Leadership Team (2022-2024) for Campus Champions, a national organization of research computing professionals. Prior to joining PACE, Michael completed his Ph.D. in physics with a focus on computational biophysics. He conducted molecular dynamics simulations of the physical chemistry of lipid membranes on a variety of supercomputers, especially those allocated through XSEDE. 

Deirdre (Dee) Womack

Systems Support Engineer II

System Administration

Grigori Yourganov, Ph.D.

Research Scientist

Research Computing Facilitator

  • Ph.D., Medical Science, University of Toronto
  • M.Sc., Computer Science, York University (Toronto, Canada)

Grigori joined the PACE team in October 2022. Prior to that, he had been working as the HPC Research Facilitator at Clemson University, and as a post-doctoral fellow at University of South Carolina and Medical University of South Carolina. His background is in neuroscience, in particular in the analysis of the relationship between brain scans and behavioural data. This analysis is quite computationally intense, which has made Grigori interested in high-performance computing. He believes all fields of science that deal with large amounts of data can really benefit from HPC clusters, and he is very excited to join the PACE team and to help the Georgia Tech researchers to find optimal HPC strategies for their research work.

Dan (Ann) Zhou

Ph: 404-385-3966

Research Technologist II

Storage Architect

Marian Zvada, M.Sc., M.B.A.

Research Scientist

Research Computing Facilitator

  • MSc in Cybernetics and Artificial Intelligence, Technical University of Kosice, Slovakia
  • MBA, College of Business, University of Nebraska-Lincoln

Marian is a Research Computing veteran, previously employed for almost a decade as a systems integrator supporting research in high energy physics for the CMS experiment in the Large Hadron Collider (LHC) at CERN as well as a member of the Open Science Grid (OSG) Investigation Team, dealing mostly with newly introduced methods connecting complex existing software systems into larger workflows for automated use. His exceptional work has been an enabler for thousands of scientists worldwide from Large Hadron Collider (LHC), Open Science Grid (OSG) and other collaborative scientific projects. Before he joined Georgia Tech in May 2022, he was no stranger to PACE, as his support had been instrumental in deploying PACE's OSG cluster "Buzzard".




Sai Nikhil Vangala

Student Assistant

Sai Nikhil Vangala is an undergraduate student from College of Computing who joined PACE in Summer 2022. He works with the Research Software Engineers with Dr. Fang Liu and with the Research Computing Facilitation team with Dr. Deepa Phanish.

Samarth Parameswar

Student Assistant

Samarth Parameswar is an undergraduate student from College of Computing who joined PACE in Fall 2022. He works with the Research Computing Facilitation team with Jeffrey Valdez.


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Student Assistant


Previous PACE Staff

  • Patricia Carey
  • Wesley Emeneker, Ph.D.
  • Blake Fleischer, Ph.D.
  • Jeff Gohlke​, In Memoriam
  • Brian MacLeod
  • Adam Munro
  • Josephine Palencia​
  • Andre McNeill
  • Chris Stone Ph.D.
  • Nuyun (Nellie) Zhang, Ph.D.
  • Neil Bright
  • Christopher J. Blanton, Ph.D.
  • Kevin Manalo, Ph.D.
  • Mehmet (Memo) Belgin, Ph.D.
  • Michael Brandon

Previous PACE Students

  • Darrion Banks - Undergraduate student
  • Joshua Barnett - Undergraduate student in Physics
  • Suraj Chatrathi - Undergraduate student in Computer Science
  • Benson Chau - Undergraduate student in Computer Science
  • Stanley E. David - Undergraduate student 
  • Chris Folsom - Undergraduate student in Electrical and Computer Engineering
  • Christine Gebara - Undergraduate student in Aeronautical Engineering
  • Austin Gilbert - Undergraduate student in Physics
  • Brennan Hill - Undergraduate student in Electrical and Computer Engineering
  • Ivory Miller - Undergraduate student in Industrial and Systems Engineering
  • CJ Park - Undergraduate student
  • Fu Shen - Undergraduate student in Computer Science
  • Tat How (Kelvin) Tan - Graduate Student in Electrical and Computer Engineering
  • Tyler Tippens - Undergraduate student in Physics
  • Shun Xi - Undergraduate student in Chemical Engineering
  • Mary Xu - Undergraduate student in Computer Science
  • Jack Rager - Undergraduate student in Industrial and Systems Engineering
  • Savannah Quinn - Undergraduate Industrial and Systems Engineering and Masters student studying Computational Data Analytics.
  • Siddhartha Vemuri - Undergraduate student in Computer Science, CoC
  • Yorick Andeweg - Undergraduate in Physics
  • Sebastian K. Hollister - Undergraduate student in Computer Science, CoC
  • Anish Manne - Undergraduate student in Computer Science, CoC
  • Ryan Elliott - Undergraduate student in Computer Science, CoC
  • Quynh Trinh - Undergraduate student in Computer Science, CoC
  • Eugene Min - Undergraduate student in Electrical & Computer Engineering, CoE (intern at ARM, summer 2022)
  • Hyun Choi - Undergraduate student in Physics

Additional contact information is available at