| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | plutao.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | J8LNKAN8RW/39RQF8Q |
| Repository | dpi.inpe.br/plutao/2011/06.11.03.44.28 (restricted access) |
| Last Update | 2012:02.03.12.57.05 (UTC) administrator |
| Metadata Repository | dpi.inpe.br/plutao/2011/06.11.03.44.29 |
| Metadata Last Update | 2021:01.02.03.52.36 (UTC) administrator |
| Secondary Key | INPE--PRE/ |
| DOI | 10.1504/ijhpsa.2011.040462 |
| ISSN | 1751-6528 |
| Label | lattes: 3723124745578916 3 FazendaPaKaRoMoNa:2011:ChSoIm |
| Citation Key | FazendaPaKaRoMoNa:2011:ChSoIm |
| Title | Challenges and solutions to improve the scalability of an operational regional meteorological forecasting model  |
| Year | 2011 |
| Access Date | 2024, May 02 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 7081 KiB |
| 2. Context | |
| Author | 1 Fazenda, Alvaro Luiz 2 Panetta, Jairo 3 Katsurayama, Daniel Massaru 4 Rodriguez, Luiz Flavio 5 Motta, Luis Filipe 6 Navaux, Philippe Olivier Alexandre |
| Group | 1 2 DMD-CPT-INPE-MCT-BR 3 DMD-CPT-INPE-MCT-BR 4 DMD-CPT-INPE-MCT-BR |
| Affiliation | 1 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Instituto Nacional de Pesquisas Espaciais (INPE) 4 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Author e-Mail Address | 1 2 3 daniel.massaru@cptec.inpe.br |
| e-Mail Address | daniel.massaru@cptec.inpe.br |
| Journal | International Journal of High Performance Systems Architecture |
| Volume | 3 |
| Number | 2/3 |
| Pages | 87-97 |
| Secondary Mark | B1_CIÊNCIA_DA_COMPUTAÇÃO B3_ENGENHARIAS_IV |
| History (UTC) | 2011-06-11 17:43:46 :: lattes -> marciana :: 2011 2011-06-20 18:19:39 :: marciana -> valdirene :: 2011 2011-11-03 16:34:47 :: valdirene -> banon :: 2011 2011-11-18 16:53:20 :: banon -> valdirene :: 2011 2012-02-03 12:57:17 :: valdirene -> administrator :: 2011 2021-01-02 03:52:36 :: administrator -> valdirene :: 2011 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Version Type | publisher |
| Keywords | parallel scalability regional weather forecasting models |
| Abstract | This work investigates the parallel scalability of BRAMS, a limited area weather forecasting production code, from O(100) cores to O(1,000) cores on large grids (20 km and 10 km resolution runs over South America). Initial experiments show lack of scalability at modest core count. Execution time profiling and source code examination revealed the causes of the limited scalability: sequential algorithms and extensive memory requirements at scarcely used phases of the computation. As processor count increases, these 'secondary' phases dominate execution time. Algorithm replacement and memory reduction generate a new code version that possesses strong and weak scaling. The new version achieved a speed-up of 6 from 100 to 700 processors on the 20 km resolution grid and a speed-up of 6.9 on the same processor range on the 10 km resolution grid. Results were confirmed at another machine with a distinct architecture. Further experiments show that the scalability of the 20 km resolution case is limited by load unbalancing at the most demanding computational phase. Copyright © 2011 Inderscience Enterprises Ltd. |
| Area | MET |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDMD > Challenges and solutions... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| User Group | administrator lattes marciana banon valdirene |
| Visibility | shown |
| Archiving Policy | denypublisher denyfinaldraft6 |
| Read Permission | deny from all and allow from 150.163 |
| Update Permission | not transferred |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/43SKC35 |
| URL (untrusted data) | http://www.inderscience.com/browse/index.php?journalID=213 |
| Dissemination | COMPENDEX |
| Host Collection | dpi.inpe.br/plutao@80/2008/08.19.15.01 |
| 6. Notes | |
| Notes | Setores de Atividade: Pesquisa e desenvolvimento científico. |
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel format isbn lineage mark mirrorrepository month nextedition orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup resumeid rightsholder schedulinginformation secondarydate session shorttitle sponsor subject targetfile tertiarymark tertiarytype typeofwork |
| 7. Description control | |
| e-Mail (login) | valdirene |
| update | |