Parallel coupling of regional atmosphere and ocean models
In coupled models the performance of massively parallelmodel components strongly suffers from sequential coupling overhead.A coupling interface for parallel interpolation and parallelcommunication is urgently required to work out this performancedilemma. Performance measurements for a parallel coupl...
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ftawi:oai:epic.awi.de:4818 2023-09-05T13:17:21+02:00 Parallel coupling of regional atmosphere and ocean models Frickenhaus, Stephan Redler, Rene Post, P. 2001 application/pdf https://epic.awi.de/id/eprint/4818/ https://epic.awi.de/id/eprint/4818/1/Fri2001b.pdf https://hdl.handle.net/10013/epic.15386 https://hdl.handle.net/10013/epic.15386.d001 unknown https://epic.awi.de/id/eprint/4818/1/Fri2001b.pdf https://hdl.handle.net/10013/epic.15386.d001 Frickenhaus, S. orcid:0000-0002-0356-9791 , Redler, R. and Post, P. (2001) Parallel coupling of regional atmosphere and ocean models , Developments in Teracomputing, Ed. W. Zwieflhofer, N. Kreitz, World Scientific Publishing, Singapore. 2001 . hdl:10013/epic.15386 EPIC3Developments in Teracomputing, Ed. W. Zwieflhofer, N. Kreitz, World Scientific Publishing, Singapore. 2001, pp. 201-213, ISBN: 981-02-4761-3 Conference notRev 2001 ftawi 2023-08-22T19:44:58Z In coupled models the performance of massively parallelmodel components strongly suffers from sequential coupling overhead.A coupling interface for parallel interpolation and parallelcommunication is urgently required to work out this performancedilemma. Performance measurements for a parallel coupling ofparallel regional atmosphere and ocean models are presented for theCRAY-T3E-1200 using the coupling library MpCCI. The differentrotated grids of the models MOM2 (ocean-seaice) and PARHAM(atmosphere) are configured for the arctic region. In particular, asunderlying MPI-implementations CRAY-MPI and MetaMPI are compared intheir performance for some relevant massive parallel configurations.It is demonstrated that an overhead of 10\% for coupling, includinginterpolation and communication, can be achieved. Perspectives for acommon coupling specification are given enabling the modelingcommunity to easily exchange model components as well as couplingsoftware, making model components reusable in other couplingprojects and on next generation computing architectures. Futureapplications of parallel coupling software in parallel nesting anddata assimilation are discussed. Conference Object Arctic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
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description |
In coupled models the performance of massively parallelmodel components strongly suffers from sequential coupling overhead.A coupling interface for parallel interpolation and parallelcommunication is urgently required to work out this performancedilemma. Performance measurements for a parallel coupling ofparallel regional atmosphere and ocean models are presented for theCRAY-T3E-1200 using the coupling library MpCCI. The differentrotated grids of the models MOM2 (ocean-seaice) and PARHAM(atmosphere) are configured for the arctic region. In particular, asunderlying MPI-implementations CRAY-MPI and MetaMPI are compared intheir performance for some relevant massive parallel configurations.It is demonstrated that an overhead of 10\% for coupling, includinginterpolation and communication, can be achieved. Perspectives for acommon coupling specification are given enabling the modelingcommunity to easily exchange model components as well as couplingsoftware, making model components reusable in other couplingprojects and on next generation computing architectures. Futureapplications of parallel coupling software in parallel nesting anddata assimilation are discussed. |
format |
Conference Object |
author |
Frickenhaus, Stephan Redler, Rene Post, P. |
spellingShingle |
Frickenhaus, Stephan Redler, Rene Post, P. Parallel coupling of regional atmosphere and ocean models |
author_facet |
Frickenhaus, Stephan Redler, Rene Post, P. |
author_sort |
Frickenhaus, Stephan |
title |
Parallel coupling of regional atmosphere and ocean models |
title_short |
Parallel coupling of regional atmosphere and ocean models |
title_full |
Parallel coupling of regional atmosphere and ocean models |
title_fullStr |
Parallel coupling of regional atmosphere and ocean models |
title_full_unstemmed |
Parallel coupling of regional atmosphere and ocean models |
title_sort |
parallel coupling of regional atmosphere and ocean models |
publishDate |
2001 |
url |
https://epic.awi.de/id/eprint/4818/ https://epic.awi.de/id/eprint/4818/1/Fri2001b.pdf https://hdl.handle.net/10013/epic.15386 https://hdl.handle.net/10013/epic.15386.d001 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
EPIC3Developments in Teracomputing, Ed. W. Zwieflhofer, N. Kreitz, World Scientific Publishing, Singapore. 2001, pp. 201-213, ISBN: 981-02-4761-3 |
op_relation |
https://epic.awi.de/id/eprint/4818/1/Fri2001b.pdf https://hdl.handle.net/10013/epic.15386.d001 Frickenhaus, S. orcid:0000-0002-0356-9791 , Redler, R. and Post, P. (2001) Parallel coupling of regional atmosphere and ocean models , Developments in Teracomputing, Ed. W. Zwieflhofer, N. Kreitz, World Scientific Publishing, Singapore. 2001 . hdl:10013/epic.15386 |
_version_ |
1776198561824768000 |