Stephen Harrell

Stephen Lien Harrell

HPC Engineering Scientist

High Performance Computing

Stephen joined TACC in 2020 as a member of the HPC Performance & Architectures group. He is focused on HPC system performance and monitoring. Prior to TACC he served as a Senior Computational Scientist in Research Computing at Purdue University.

Areas of Research

  • Performance Portability
  • Container Performance
  • HPC ROI and Capacity Planning

Selected Publications

VPIC 2.0: Next Generation Particle-in-Cell Simulations, Bird, R., Tan, N., Luedtke, S., Harrell, S., Taufer, M., Albright, B., IEEE Transactions on Parallel and Distributed Computing, May 28th, 2021 (doi)

Characterizing Containerized HPC Application Performance at Petascale on CPU and GPU Architectures, Ruhela, A., Harrell, S., Evans, R., Zynda, G., Fonner, J., Vaughn, M., Minyard, T., Cazes, J., ISC High Performance, June 24th-Jul 2nd, 2021 (doi)

Optimizing GPU-enhanced HPC System and Cloud Procurements for Scientific Workloads, Evans, R., Cawood, M., Harrell, S., Huang, L., Liu, S., Lu, C., Ruhela, A., Wang, I., Zhang, Z.,ISC High Performance, June 24th-July 2nd, 2021(doi)

BenchTool: a framework for the automation and standardization of HPC performance benchmarking, Cawood, M., Harrell, S., Evans, R.,, PEARC'21: Practice and Experience in Advanced Research Computing, Virtual Conference, July 19th-22nd, 2021 (doi)

Defining Performance of Scientific Application Workloads on the AMD Milan Platform, Wu, T., Harrell, S., Lentner, G., Younts, A., Weekly, S., Mertes, Z., Maji, A., Smith, P., Zhu, X., PEARC'21: Practice and Experience in Advanced Research Computing, Virtual Conference, July 19th-22nd, 2021 (doi)

Research Computing on Campus - Application of a Production Function to the Value of Academic High-Performance Computing, Smith, P., Harrell, S.. PEARC'21: Practice and Experience in Advanced Research Computing, Virtual Conference, July 19th-22nd, 2021 (doi)

Transparency and Reproducibility Practice in Large-scale Computational Science: A Preface to the Special Section, Plale, B., Harrell, S., IEEE Transactions on Parallel and Distributed Systems, Volume 32, Issue 11, November 2021, Pages 2607-2608 (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)

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)

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

  • Chair, ACM SIGHPC Computational & Data Science Fellowship