EARLY EXPERIENCES WITH THE 360TF IBM BLUE GENE/L PLATFORM
- 1 June 2008
- journal article
- Published by World Scientific Pub Co Pte Ltd in International Journal of Computational Methods
- Vol. 5 (2), 237-253
- https://doi.org/10.1142/s0219876208001443
Abstract
The High Order Method Modeling Environment is a scalable, spectral-element-based prototype for the Community Atmospheric Model component of the Community Climate System Model. The 3D moist primitive equations are solved on the cubed sphere with a hybrid pressure η vertical coordinate using an Emanuel convective parametrization for moist processes. Semi-implicit time integration, based on a preconditioned conjugate gradient solver, circumvents the time step restrictions associated with gravity waves. Benchmarks for two standard tests problems at 10 km horizontal resolution have been run on Blue Gene/L. Results obtained on a 32-rack Blue Gene/L system (65,536 processors, 183.5-teraflop peak) show sustained performance of 8.0 teraflops on 32,768 processors for the moist Held–Suarez test problem in coprocessor mode and 11.3 teraflops on 32,768 processors for the aquaplanet test problem, running in virtual node mode.Keywords
This publication has 10 references indexed in Scilit:
- Moisture–convection feedback in the tropicsQuarterly Journal of the Royal Meteorological Society, 2004
- The Community Climate System ModelBulletin of the American Meteorological Society, 2001
- Development and Evaluation of a Convection Scheme for Use in Climate ModelsJournal of the Atmospheric Sciences, 1999
- The National Center for Atmospheric Research Community Climate Model: CCM3*Journal of Climate, 1998
- The Spectral Element Method for the Shallow Water Equations on the SphereJournal of Computational Physics, 1997
- A global shallow‐water model using an expanded spherical cube: Gnomonic versus conformal coordinatesQuarterly Journal of the Royal Meteorological Society, 1996
- A Proposal for the Intercomparison of the Dynamical Cores of Atmospheric General Circulation ModelsBulletin of the American Meteorological Society, 1994
- A Scheme for Representing Cumulus Convection in Large-Scale ModelsJournal of the Atmospheric Sciences, 1991
- Frequency Filter for Time IntegrationsMonthly Weather Review, 1972
- Conservative Finite-Difference Approximations of the Primitive Equations on Quasi-Uniform Spherical GridsMonthly Weather Review, 1972