Veronica Melesse Vergara Section Head Contact VERGARAVG@ORNL.GOV All Publications A Step Towards the Final Frontier: Lessons Learned from Acceptance Testing of the First HPE/Cray EX 3000 System at ORNL Towards Acceptance Testing at the Exascale Frontier US Department of Energy, Office of Science High Performance Computing Facility Operational Assessment 2019 Oak Ridge Leadership Computing Facility Experiences in porting mini‐applications to OpenACC and OpenMP on heterogeneous systems End-to-end I/O portfolio for the summit supercomputing ecosystem... Comparing High Performance Computing Accelerator Programming Models Harmony: A Harness Monitoring System for the Oak Ridge Leadership Computing Facility Scaling the Summit: Deploying the World's Fastest Supercomputer Experiences porting mini-applications to OpenACC and OpenMP on heterogeneous systems The Design, Deployment, and Evaluation of the CORAL Pre-Exascale Systems Are we witnessing the spectre of an HPC meltdown? Evaluating Performance Portability of Accelerator Programming Models using SPEC ACCEL 1.2 Benchmarks Are We Witnessing the Spectre of an HPC Meltdown? Experiences evaluating functionality and performance of IBM Power8+ systems An in-depth evaluation of GCC's OpenACC implementation in Cray systems Towards Achieving Performance Portability Using Directives for Accelerators... From Describing to Prescribing Parallelism: Translating the SPEC ACCEL OpenACC Suite to OpenMP Target Directives... FCP: A Fast and Scalable Data Copy Tool for High Performance Parallel File Systems Finally, A Way to Measure Frontend I/O Performance... Early Experiences Writing Performance Portable OpenMP 4 Codes Student cluster competition: a multi-disciplinary undergraduate HPC educational tool A More Realistic Way of Stressing the End-to-end I/O System... Use of Continuous Integration Tools for Application Performance Monitoring... Pagination First page « First Previous page ‹‹ Page 1 Current page 2 Key Links ORCID LinkedIn Organizations User Facilities Oak Ridge Leadership Computing Facility Computing and Computational Sciences Directorate National Center for Computational Sciences