Počet záznamů: 1  

Large-scale geosimulations using GEM and trilions

  1. 1.
    SYSNO ASEP0483048
    Druh ASEPC - Konferenční příspěvek (mezinárodní konf.)
    Zařazení RIVD - Článek ve sborníku
    NázevLarge-scale geosimulations using GEM and trilions
    Tvůrce(i)Blaheta, Radim (UGN-S) - Jakl, Ondřej (UGN-S) - Hrtus, Rostislav (UGN-S) - Kolcun, Alexej (UGN-S) - Kohut, Roman (UGN-S) - Starý, Jiří (UGN-S) - Turan, E. (CH)
    Celkový počet autorů7
    Zdroj.dok.Supercomputing in science and engineering. - Ostrava : IT4Innovations National Supercomputing Center, 2017 / Pešatová K. ; Poláková B. ; Cawley J. - ISBN 978-80-248-4037-6
    Poč.str.4 s.
    Jazyk dok.eng - angličtina
    Země vyd.CZ - Česká republika
    Klíč. slovasingular symmetric positive semidefinite problems ; special problems of geotechnics ; PCG method
    AnotaceThe project deals with efficient solution of singular symmetric
    positive semidefinite problems. Our motivation arises from the
    need 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 corresponding 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.
    PracovištěÚstav geoniky
    KontaktEva Dudková, eva.dudkova@ugn.cas.cz, Tel.: 596 979 354
    Rok sběru2019