The impact of enabling multiple subdomains per MPI process in the TFETI domain decomposition method
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27120%2F18%3A10237541" target="_blank" >RIV/61989100:27120/18:10237541 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27240/18:10237541 RIV/61989100:27730/18:10237541 RIV/61989100:27740/18:10237541
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0096300317304927" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0096300317304927</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.amc.2017.07.031" target="_blank" >10.1016/j.amc.2017.07.031</a>
Alternative languages
Result language
angličtina
Original language name
The impact of enabling multiple subdomains per MPI process in the TFETI domain decomposition method
Original language description
The paper deals with handling multiple subdomains per computational core in the PERMON toolbox, namely in the PermonFLLOP module, to fully exploit the potential of the Total Finite Element Tearing and Interconnecting (TFETI) domain decomposition method (DDM). Most authors researching FETI methods present weak parallel scalability with one subdomain assigned to each computational core, and call it just parallel scalability. Here we present an extension showing the data of more than one subdomain being held by each MPI process. Numerical experiments demonstrate the theoretically supported fact that for the given problem size and number of processors, the increased number of subdomains leads to better conditioning of the system operator, and hence faster convergence. Moreover, numerical, memory, strong parallel, and weak parallel scalability is reported, and optimal numbers of subdomains per core are examined. Finally, new PETSc matrix types dealing with the aforementioned extension are introduced.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10102 - Applied mathematics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
APPLIED MATHEMATICS AND COMPUTATION
ISSN
0096-3003
e-ISSN
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Volume of the periodical
319
Issue of the periodical within the volume
FEB 15 2018
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
586-597
UT code for WoS article
000415906200047
EID of the result in the Scopus database
2-s2.0-85026417381