MPAS-Ocean NESAP Status Report
NESAP performance improvements on MPAS-Ocean have resulted in a 5% to 7% speed-up on each of the examined systems including Cori-KNL, Cori-Haswell, and Edison. These tests were configured to emulate a production workload by using 128 nodes and a high-resolution ocean domain. Overall, the gap between...
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ftosti:oai:osti.gov:1352437 2023-07-30T04:06:46+02:00 MPAS-Ocean NESAP Status Report Petersen, Mark Roger Arndt, William Keen, Noel 2021-02-12 application/pdf http://www.osti.gov/servlets/purl/1352437 https://www.osti.gov/biblio/1352437 https://doi.org/10.2172/1352437 unknown http://www.osti.gov/servlets/purl/1352437 https://www.osti.gov/biblio/1352437 https://doi.org/10.2172/1352437 doi:10.2172/1352437 54 ENVIRONMENTAL SCIENCES 2021 ftosti https://doi.org/10.2172/1352437 2023-07-11T09:18:09Z NESAP performance improvements on MPAS-Ocean have resulted in a 5% to 7% speed-up on each of the examined systems including Cori-KNL, Cori-Haswell, and Edison. These tests were configured to emulate a production workload by using 128 nodes and a high-resolution ocean domain. Overall, the gap between standard and many-core architecture performance has been narrowed, but Cori-KNL remains considerably under-performing relative to Edison. NESAP code alterations affected 600 lines of code, and most of these improvements will benefit other MPAS codes (sea ice, land ice) that are also components within ACME. Modifications are fully tested within MPAS. Testing in ACME across many platforms is underway, and must be completed before the code is merged. In addition, a ten-year production ACME global simulation was conducted on Cori-KNL in late 2016 with the pre-NESAP code in order to test readiness and configurations for scientific studies. Next steps include assessing performance across a range of nodes, threads per node, and ocean resolutions on Cori-KNL. Other/Unknown Material Sea ice SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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Open Polar |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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54 ENVIRONMENTAL SCIENCES |
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54 ENVIRONMENTAL SCIENCES Petersen, Mark Roger Arndt, William Keen, Noel MPAS-Ocean NESAP Status Report |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
NESAP performance improvements on MPAS-Ocean have resulted in a 5% to 7% speed-up on each of the examined systems including Cori-KNL, Cori-Haswell, and Edison. These tests were configured to emulate a production workload by using 128 nodes and a high-resolution ocean domain. Overall, the gap between standard and many-core architecture performance has been narrowed, but Cori-KNL remains considerably under-performing relative to Edison. NESAP code alterations affected 600 lines of code, and most of these improvements will benefit other MPAS codes (sea ice, land ice) that are also components within ACME. Modifications are fully tested within MPAS. Testing in ACME across many platforms is underway, and must be completed before the code is merged. In addition, a ten-year production ACME global simulation was conducted on Cori-KNL in late 2016 with the pre-NESAP code in order to test readiness and configurations for scientific studies. Next steps include assessing performance across a range of nodes, threads per node, and ocean resolutions on Cori-KNL. |
author |
Petersen, Mark Roger Arndt, William Keen, Noel |
author_facet |
Petersen, Mark Roger Arndt, William Keen, Noel |
author_sort |
Petersen, Mark Roger |
title |
MPAS-Ocean NESAP Status Report |
title_short |
MPAS-Ocean NESAP Status Report |
title_full |
MPAS-Ocean NESAP Status Report |
title_fullStr |
MPAS-Ocean NESAP Status Report |
title_full_unstemmed |
MPAS-Ocean NESAP Status Report |
title_sort |
mpas-ocean nesap status report |
publishDate |
2021 |
url |
http://www.osti.gov/servlets/purl/1352437 https://www.osti.gov/biblio/1352437 https://doi.org/10.2172/1352437 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
http://www.osti.gov/servlets/purl/1352437 https://www.osti.gov/biblio/1352437 https://doi.org/10.2172/1352437 doi:10.2172/1352437 |
op_doi |
https://doi.org/10.2172/1352437 |
_version_ |
1772819653082480640 |