Improved parallel performance of the CICE model in CESM1
The Los Alamos sea ice model, CICE, is a sophisticated finite difference grid point model. It has been a part of the National Science Foundation and Department of Energy community climate models (Community Climate System Model (CCSM) and Community Earth System Model (CESM)) for over a decade. It inc...
Published in: | The International Journal of High Performance Computing Applications |
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Language: | English |
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Sage Publications, Inc.
2015
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Online Access: | http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-021-727 https://doi.org/10.1177/1094342014548771 |
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ftncar:oai:drupal-site.org:articles_16661 2023-09-05T13:23:04+02:00 Improved parallel performance of the CICE model in CESM1 Craig, Anthony (author) Mickelson, Sheri (author) Hunke, Elizabeth (author) Bailey, David (author) 2015-05-01 http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-021-727 https://doi.org/10.1177/1094342014548771 en eng Sage Publications, Inc. International Journal of High Performance Computing Applications http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-021-727 doi:10.1177/1094342014548771 ark:/85065/d7sx6fdm Copyright 2015 Sage Publications. Text article 2015 ftncar https://doi.org/10.1177/1094342014548771 2023-08-14T18:45:03Z The Los Alamos sea ice model, CICE, is a sophisticated finite difference grid point model. It has been a part of the National Science Foundation and Department of Energy community climate models (Community Climate System Model (CCSM) and Community Earth System Model (CESM)) for over a decade. It includes various physical and dynamical processes and is parallelized to run on large-scale computer systems. The CICE model was assessed in the CESM at different resolutions and target processor counts to better understand and optimize the performance. Several new decompositions and a new feature to reduce the halo cost were added to the model. The new decompositions better leverage land block elimination and take advantage of scaling opportunities in different computational kernels. As a result of these new features, the CICE model performance has been improved by up to 45% and has more flexibility to be run efficiently at arbitrary Message Passing Interface (MPI) task counts ATM0856145 Article in Journal/Newspaper Sea ice OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) The International Journal of High Performance Computing Applications 29 2 154 165 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
The Los Alamos sea ice model, CICE, is a sophisticated finite difference grid point model. It has been a part of the National Science Foundation and Department of Energy community climate models (Community Climate System Model (CCSM) and Community Earth System Model (CESM)) for over a decade. It includes various physical and dynamical processes and is parallelized to run on large-scale computer systems. The CICE model was assessed in the CESM at different resolutions and target processor counts to better understand and optimize the performance. Several new decompositions and a new feature to reduce the halo cost were added to the model. The new decompositions better leverage land block elimination and take advantage of scaling opportunities in different computational kernels. As a result of these new features, the CICE model performance has been improved by up to 45% and has more flexibility to be run efficiently at arbitrary Message Passing Interface (MPI) task counts ATM0856145 |
author2 |
Craig, Anthony (author) Mickelson, Sheri (author) Hunke, Elizabeth (author) Bailey, David (author) |
format |
Article in Journal/Newspaper |
title |
Improved parallel performance of the CICE model in CESM1 |
spellingShingle |
Improved parallel performance of the CICE model in CESM1 |
title_short |
Improved parallel performance of the CICE model in CESM1 |
title_full |
Improved parallel performance of the CICE model in CESM1 |
title_fullStr |
Improved parallel performance of the CICE model in CESM1 |
title_full_unstemmed |
Improved parallel performance of the CICE model in CESM1 |
title_sort |
improved parallel performance of the cice model in cesm1 |
publisher |
Sage Publications, Inc. |
publishDate |
2015 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-021-727 https://doi.org/10.1177/1094342014548771 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
International Journal of High Performance Computing Applications http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-021-727 doi:10.1177/1094342014548771 ark:/85065/d7sx6fdm |
op_rights |
Copyright 2015 Sage Publications. |
op_doi |
https://doi.org/10.1177/1094342014548771 |
container_title |
The International Journal of High Performance Computing Applications |
container_volume |
29 |
container_issue |
2 |
container_start_page |
154 |
op_container_end_page |
165 |
_version_ |
1776203644414197760 |