John K Holmen HPC Engineer Contact 865.341.2149 | HOLMENJK@ORNL.GOV All Publications Scaling Uintah on the Aurora Exascale System up to 122,880 Intel Ponte Vecchio Xe Stacks Lessons Learned and Scalability Achieved When Porting Uintah to DOE Exascale Systems... Nek5000/RS Performance on Advanced GPU Architectures FacultyHack Events: Faculty-Focused Hackathons for High-Performance Computing Curriculum Development An Evaluation of the Effect of Network Cost Optimization for Leadership Class Supercomputers Towards Sustainable Post-Exascale Leadership Computing Towards the Development of an Exascale Network Digital Twin... Making Uintah Performance Portable for Department of Energy Exascale Testbeds Frontier: Exploring Exascale Early experiences on the OLCF Frontier system with AthenaPK and Parthenon-Hydro Frontier: Exploring Exascale Evaluating the Cloud for Capability Class Leadership Workloads... Strengthening the US Department of Energy’s Recruitment Pipeline: The DOE/NNSA Predictive Science Academic Alliance Program... Early Experiences on the OLCF Frontier System with AthenaPK and Parthenon-Hydro Key Links Google Scholar ORCID LinkedIn GitHub Organizations Computing and Computational Sciences Directorate National Center for Computational Sciences HPC Operations Section System Acceptance and User Environment Group