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Statements

Subject Item
n2:RIV%2F61989100%3A27740%2F12%3A86084421%21RIV13-MSM-27740___
rdf:type
n7:Vysledek skos:Concept
dcterms:description
This paper deals with an analysis of various parallelization strategies for the TFETI algorithm. The data distributions and the most relevant actions are discussed, especially those concerning coarse problem. Being a part of the coarse space projector, it couples all the subdomains computations and accelerates convergence. Its direct solution is more robust but complicates the massively parallel implementation. Presented numerical results confirm high parallel scalability of the coarse problem solution if the dual constraint matrix is distributed and then orthonormalized in parallel. Benchmarks were implemented using PETSc parallelization library and run on HECToR service at EPCC in Edinburgh. This paper deals with an analysis of various parallelization strategies for the TFETI algorithm. The data distributions and the most relevant actions are discussed, especially those concerning coarse problem. Being a part of the coarse space projector, it couples all the subdomains computations and accelerates convergence. Its direct solution is more robust but complicates the massively parallel implementation. Presented numerical results confirm high parallel scalability of the coarse problem solution if the dual constraint matrix is distributed and then orthonormalized in parallel. Benchmarks were implemented using PETSc parallelization library and run on HECToR service at EPCC in Edinburgh.
dcterms:title
TFETI Coarse Space Projectors Parallelization Strategies TFETI Coarse Space Projectors Parallelization Strategies
skos:prefLabel
TFETI Coarse Space Projectors Parallelization Strategies TFETI Coarse Space Projectors Parallelization Strategies
skos:notation
RIV/61989100:27740/12:86084421!RIV13-MSM-27740___
n7:predkladatel
n16:orjk%3A27740
n3:aktivita
n23:S n23:P
n3:aktivity
P(ED1.1.00/02.0070), S
n3:dodaniDat
n22:2013
n3:domaciTvurceVysledku
n18:4982940 n18:7610173
n3:druhVysledku
n19:D
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
174169
n3:idVysledku
RIV/61989100:27740/12:86084421
n3:jazykVysledku
n17:eng
n3:klicovaSlova
coarse problem; natural coarse space; PETSc; TFETI; Total FETI; FETI; domain decomposition
n3:klicoveSlovo
n11:TFETI n11:Total%20FETI n11:coarse%20problem n11:natural%20coarse%20space n11:domain%20decomposition n11:PETSc n11:FETI
n3:kontrolniKodProRIV
[45B98BD3E68D]
n3:mistoKonaniAkce
Torun
n3:mistoVydani
Berlin
n3:nazevZdroje
Lecture Notes in Computer Science. Volume 7203
n3:obor
n21:BA
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n20:ED1.1.00%2F02.0070
n3:rokUplatneniVysledku
n22:2012
n3:tvurceVysledku
Horák, David Hapla, Václav
n3:typAkce
n10:WRD
n3:wos
000313192800016
n3:zahajeniAkce
2011-09-11+02:00
s:issn
0302-9743
s:numberOfPages
11
n13:doi
10.1007/978-3-642-31464-3_16
n12:hasPublisher
Springer-Verlag
n5:isbn
978-3-642-31463-6
n15:organizacniJednotka
27740