Toward petascale computing in geosciences: application to the Hanford 300 Area

Journal Article · Mon Sep 01 00:00:00 EDT 2008 · Journal of Physics: Conference Series, 125:Art. No. 012051

DOI:https://doi.org/10.1088/1742-6596/125/1/012051· OSTI ID:946354

Hammond, Glenn E; Lichtner, Peter C; Mills, Richard T; Lu, Chuan

Modeling uranium transport at the Hanford 300 Area presents new challenges for high performance computing. A field-scale three-dimensional domain with an hourly fluctuating Columbia river stage coupled to flow in highly permeable sediments results in fast groundwater flow rates requiring small time steps. In this work, high-performance computing has been applied to simulate variably saturated groundwater flow and tracer transport at the 300 Area using PFLOTRAN. Simulation results are presented for discretizations up to 10.8 million degrees of freedom, while PFLOTRAN performance was assessed on up to one billion degrees of freedom and 12,000 processor cores on Jaguar, the Cray XT4 supercomputer at ORNL.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 946354
• Report Number(s): PNNL-SA-62345; 25649; KJ0403000; TRN: US0900919
• Journal Information: Journal of Physics: Conference Series, 125:Art. No. 012051, Vol. 125
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
54 ENVIRONMENTAL SCIENCES
HANFORD RESERVATION
URANIUM
RADIONUCLIDE MIGRATION
FLOW MODELS
GROUND WATER
COMPUTERIZED SIMULATION
P CODES
COLUMBIA RIVER
DEGREES OF FREEDOM
FLOW RATE
Environmental Molecular Sciences Laboratory