TFETI coarse problem massively parallel implementation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F12%3A86084416" target="_blank" >RIV/61989100:27240/12:86084416 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27740/12:86084416
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
TFETI coarse problem massively parallel implementation
Original language description
Most of computations (subdomains problems) appearing in FETI-type methods are purely local and therefore parallelizable without any data transfers. However, if we want to accelerate also dual actions, some communication is needed due to primal-dual transition. Distribution of primal matrices is quite straightforward. Each of cores works with local part associated with its subdomains. Natural effort using the massively parallel computers is to maximize number of subdomains so that sizes of subdomain stiffness matrices are reduced which accelerates their factorization and subsequent pseudoinverse application, which belong to the most time consuming actions. On the other hand, negative effect of that is an increase of null space dimension and number of Lagrange multipliers on subdomains interfaces, i.e. dual dimension, so that the bottleneck of the TFETI method is the application of the projector, especially its part - so called coarse problem, which can be hardly solved sequentially on t
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
BA - General mathematics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/ED1.1.00%2F02.0070" target="_blank" >ED1.1.00/02.0070: IT4Innovations Centre of Excellence</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
ECCOMAS 2012 - European Congress on Computational Methods in Applied Sciences and Engineering, e-Book Full Papers
ISBN
978-3-9503537-0-9
ISSN
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e-ISSN
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Number of pages
8
Pages from-to
8260-8267
Publisher name
Vienna University of Technology
Place of publication
Vienna
Event location
Vídeň
Event date
Sep 10, 2012
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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