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

Conference · Mon Sep 01 00:00:00 EDT 2008

DOI:https://doi.org/10.1088/1742-6596/125/1/012051· OSTI ID:937534

Hammond, Glenn ^[1]; Lichtner, Peter ^[2]; Mills, Richard T. ^[3]; Lu, Chuan ^[4]

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1. Pacific Northwest National Laboratory (PNNL)
2. Los Alamos National Laboratory (LANL)
3. ORNL
4. University of Utah

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)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 937534
• Resource Relation: Journal Volume: 125; Conference: SciDAC 2008 - Seattle, California, United States of America - 7/13/2008 12:00:00 AM-7/17/2008 12:00:00 AM
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
97 MATHEMATICS AND COMPUTING
HANFORD RESERVATION
GROUND WATER
FLOW RATE
P CODES
PERFORMANCE
SEDIMENTS
COMPUTER CALCULATIONS
SUPERCOMPUTERS
ENVIRONMENTAL TRANSPORT
URANIUM