Large-scale geosimulations using GEM and trilions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F17%3A00483048" target="_blank" >RIV/68145535:_____/17:00483048 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.it4i.cz/wp-content/uploads/2017/04/Supercomputing-in-Science-and-Engineering-reduce-preview.pdf" target="_blank" >https://www.it4i.cz/wp-content/uploads/2017/04/Supercomputing-in-Science-and-Engineering-reduce-preview.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Large-scale geosimulations using GEM and trilions

Popis výsledku v původním jazyce

The project deals with efficient solution of singular symmetric positive semidefinite problems. Our motivation arises from the nneed to solve special problems of geotechnics, e.g. to perform upscaling analysis of geocomposites. In that and other applications we have to solve boundary problems with pure Neumann boundary conditions. We show that the stabilised PCG method with various preconditioners is a good choice for systems resulting from the numerical solution of Neumann problems, or more generally problems with a known small dimensional null space. The work was also taken as an opportunity to compare parallel implementations of the orresponding solvers, namely implementations in the in-house finite element software GEM and implementations employing components of the general Trilinos library. The studies show that the solvers based on GEM are highly competitive with its recognised counterpart.

Název v anglickém jazyce

Large-scale geosimulations using GEM and trilions

Popis výsledku anglicky

The project deals with efficient solution of singular symmetric positive semidefinite problems. Our motivation arises from the nneed to solve special problems of geotechnics, e.g. to perform upscaling analysis of geocomposites. In that and other applications we have to solve boundary problems with pure Neumann boundary conditions. We show that the stabilised PCG method with various preconditioners is a good choice for systems resulting from the numerical solution of Neumann problems, or more generally problems with a known small dimensional null space. The work was also taken as an opportunity to compare parallel implementations of the orresponding solvers, namely implementations in the in-house finite element software GEM and implementations employing components of the general Trilinos library. The studies show that the solvers based on GEM are highly competitive with its recognised counterpart.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10102 - Applied mathematics

Projekt

<a href="/cs/project/ED1.1.00%2F02.0070" target="_blank" >ED1.1.00/02.0070: Centrum excelence IT4Innovations</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Supercomputing in science and engineering

ISBN

978-80-248-4037-6

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

100-103

Název nakladatele

IT4Innovations National Supercomputing Center

Místo vydání

Ostrava

Místo konání akce

Ostrava

Datum konání akce

15. 11. 2017

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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