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P124 - 9th Workshop on Parallel Systems and Algorythms

https://dl.gi.de/handle/20.500.12116/22267
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Auflistung P124 - 9th Workshop on Parallel Systems and Algorythms nach Autor:in "Gradl, Tobias"

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  • Konferenzbeitrag
    High Performance Multigrid on Current Large Scale Parallel Computers
    (9th workshop on parallel systems and algorithms – workshop of the GI/ITG special interest groups PARS and PARVA, 2008) Gradl, Tobias; Rüde, Ulrich
    Making multigrid algorithms run efficiently on large parallel computers is a challenge. Without clever data structures the communication overhead will lead to an unacceptable performance drop when using thousands of processors. We show that with a good implementation it is possible to solve a linear system with 1011 unknowns in about 1.5 minutes on almost 10,000 processors. The data structures also allow for efficient adaptive mesh refinement, opening a wide range of applications to our solver.