Early experiences with the 360tf IBM Blue Gene/L platform

G. Bhanot; J. M. Dennis; J. Edwards; W. Grabowski; M. Gupta; K. Jordan; R. D. Loft; J. Sexton; A. St-Cyr; S. J. Thomas; H. M. Tufo; T. Voran; R. Walkup; A. A. Wyszogrodski

doi:10.1142/S0219876208001443

Early experiences with the 360tf IBM Blue Gene/L platform

G. Bhanot, J. M. Dennis, J. Edwards, W. Grabowski, M. Gupta, K. Jordan, R. D. Loft, J. Sexton, A. St-Cyr, S. J. Thomas, H. M. Tufo, T. Voran, R. Walkup, A. A. Wyszogrodski

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

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.

Original language	English
Pages (from-to)	237-253
Number of pages	17
Journal	International Journal of Computational Methods
Volume	5
Issue number	2
DOIs	https://doi.org/10.1142/S0219876208001443
State	Published - Jun 2008

Keywords

Atmospheric modeling
High order methods
Parallel computing
Scalable algorithms

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10.1142/S0219876208001443

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@article{0b0079e3e0274730aed2bd14050a4afb,

title = "Early experiences with the 360tf IBM Blue Gene/L platform",

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 = "Atmospheric modeling, High order methods, Parallel computing, Scalable algorithms",

author = "G. Bhanot and Dennis, \{J. M.\} and J. Edwards and W. Grabowski and M. Gupta and K. Jordan and Loft, \{R. D.\} and J. Sexton and A. St-Cyr and Thomas, \{S. J.\} and Tufo, \{H. M.\} and T. Voran and R. Walkup and Wyszogrodski, \{A. A.\}",

year = "2008",

month = jun,

doi = "10.1142/S0219876208001443",

language = "English",

volume = "5",

pages = "237--253",

journal = "International Journal of Computational Methods",

issn = "0219-8762",

publisher = "World Scientific",

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T1 - Early experiences with the 360tf IBM Blue Gene/L platform

AU - Bhanot, G.

AU - Dennis, J. M.

AU - Edwards, J.

AU - Grabowski, W.

AU - Gupta, M.

AU - Jordan, K.

AU - Loft, R. D.

AU - Sexton, J.

AU - St-Cyr, A.

AU - Thomas, S. J.

AU - Tufo, H. M.

AU - Voran, T.

AU - Walkup, R.

AU - Wyszogrodski, A. A.

PY - 2008/6

Y1 - 2008/6

N2 - 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.

AB - 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.

KW - Atmospheric modeling

KW - High order methods

KW - Parallel computing

KW - Scalable algorithms

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DO - 10.1142/S0219876208001443

M3 - Article

AN - SCOPUS:47149102402

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VL - 5

SP - 237

EP - 253

JO - International Journal of Computational Methods

JF - International Journal of Computational Methods

IS - 2

ER -

Early experiences with the 360tf IBM Blue Gene/L platform

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Keywords

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