Efficient Implementation of Total FETI Solver for Graphic Processing Units Using Schur Complement

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F16%3A86099005" target="_blank" >RIV/61989100:27230/16:86099005 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27240/16:86099005 RIV/61989100:27740/16:86099005
Result on the web
<a href="http://link.springer.com/chapter/10.1007/978-3-319-40361-8_6" target="_blank" >http://link.springer.com/chapter/10.1007/978-3-319-40361-8_6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/978-3-319-40361-8_6" target="_blank" >10.1007/978-3-319-40361-8_6</a>

Result language
angličtina
Original language name
Efficient Implementation of Total FETI Solver for Graphic Processing Units Using Schur Complement
Original language description
This paper presents a new approach developed for acceleration of FETI solvers by Graphic Processing Units (GPU) using the Schur complement (SC) technique. By using the SCs FETI solvers can avoid working with sparse Cholesky decomposition of the stiffness matrices. Instead a dense structure in form of SC is computed and used by conjugate gradient (CG) solver. In every iteration of CG solver a forward and backward substitution which are sequential are replaced by highly parallel General Matrix Vector Multiplication (GEMV) routine. This results in 4.1 times speedup when the Tesla K20X GPU accelerator is used and its performance is compared to a single 16-core AMD Opteron 6274 (Interlagos) CPU. The main bottleneck of this method is computation of the Schur complements of the stiffness matrices. This bottleneck is significantly reduced by using new PARDISO-SC sparse direct solver. This paper also presents the performance evaluation of SC computations for three-dimensional elasticity stiffness matrices. We present the performance evaluation of the proposed approach using our implementation in the ESPRESO solver package.
Czech name
—
Czech description
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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)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). Volume 9611
ISBN
978-3-319-40360-1
ISSN
0302-9743
e-ISSN
—
Number of pages
16
Pages from-to
85-100
Publisher name
Springer
Place of publication
Basel
Event location
Soláň
Event date
May 25, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000386324600006

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