Stephen Harrell

Stephen Harrell

HPC Engineering Scientist

High Performance Computing

Stephen joined TACC in 2020 as member of the HPC Performance & Architectures group. Prior to TACC he served as a Senior Computational Scientist in Research Computing at Purdue University. Previously, Stephen spent more than 6 years as a Senior HPC System Administrator at Purdue and has more than 15 years of experience in system administration at scale.

Areas of Research

  • Performance Portability
  • Non-Traditional Scientific Software Workflows
  • HPC Training for Undergraduates
  • HPC System Administrator Training

Selected Publications

Teaching HPC System Administrators. Younts, A., Harrell, S., Journal of Computational Science Education, Volume 11, Issue 1, Pages 100-105, 2020 (doi)

Research Computing Desktops: Demystifying Research Computing for Non-Linux Users. Thota, A., Weakley, L. M., Fulton, Ben., Younts, A., Harrell, S., Dennis, H. E., Huber, L., Michael, S., Snapp-Childs, W., Dietz, D., Phillips, C., Zhu, X. PEARC19: Proceedings of the Practice and Experience in Advanced Research Computing 2019 on Sustainability, Success and Impact, Chicago, IL, July 28th - August 1st, 2019. (doi)

Effective Performance Portability. Harrell, S., Kitson, J., Bird, R., Pennycook, J., Sewall, J., Jacobsen, D., Asanza, D., Hsu, A., Kim, H., Robey, R. P3HPC18: International Workshop on Performance, Portability and Productivity in HPC, Dallas, TX. November 16th, 2018. (doi)

Special Issue on SCC'17 Reproducibility Initiative. Garrett, C. Kris, Harrell, S., Heroux, M. Parallel Computing, Volume 79, November 2018, Pages 48-49 (doi)

A Study of Failures in Community Clusters: The Case of Conte. Mitra, S., Javagal, S., Maji, A., Gamblin, T., Moody, A., Harrell, S., Bagchi, S. 7th IEEE International Workshop on Program Debugging (IWPD 2016), Ottawa, Canada, October 23rd-27th, 2016. (doi)

Windows-based Workflows on Linux-based Beowulf Clusters. Grant, R., Smith, S., Harrell, S., Younts, A., Smith, P., PEARC18: Proceedings of the Practice and Experience in Advanced Research Computing 2018 on Sustainability, Success and Impact, Pittsburgh, PA. July 22nd-26th, 2018. (doi)

Student Cluster Competition: A Multi-disciplinary Undergraduate HPC Educational Tool. Harrell, S. Nam, H. A., Vergara, V., Keville, K., Kamalic, D. EduHPC-15: Workshop on Education for High-Performance Computing, Austin, TX. November 16th, 2015. (doi)

Cost-effective HPC: The Community or the Cloud? Carlyle, A., Harrell, S., Smith, P. IEEE International Conference on Cloud Computing Technology and Science. Indianapolis, IN. November 30th-December 3rd, 2010. (doi)


B.S., Computer Science

Purdue University

Organization Membership/Professional Affiliations

  • Student Programs Coordinator, ACM SIGHPC