2LEV-D2P4: a package of high-performance preconditioners for scientific and engineering applications

Abstract : We present a package of parallel preconditioners which implements one-level and two-level Domain Decomposition algorithms on the top of the PSBLAS library for sparse matrix computations. The package, named 2LEV-D2P4 (Two-LEVel Domain Decomposition Parallel Preconditioners Package based on PSBLAS), currently includes various versions of additive Schwarz preconditioners that are combined with a coarse-level correction to obtain two-level preconditioners. A pure algebraic formulation of the preconditioners is considered. 2LEV-D2P4 has been written in Fortran~95, exploiting features such as abstract data type creation, functional overloading and dynamic memory management, while providing a smooth path towards the integration in legacy application codes. The package, used with Krylov solvers implemented in PSBLAS, has been tested on large-scale linear systems arising from model problems and real applications, showing its effectiveness.
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https://hal.archives-ouvertes.fr/hal-02421066
Contributor : Alfredo Buttari <>
Submitted on : Friday, December 20, 2019 - 11:35:32 AM
Last modification on : Friday, January 10, 2020 - 9:09:27 PM

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Alfredo Buttari, Pasqua D’ambra, Daniela Di Serafino, Salvatore Filippone. 2LEV-D2P4: a package of high-performance preconditioners for scientific and engineering applications. Applicable Algebra in Engineering, Communication and Computing, Springer Verlag, 2007, 18 (3), pp.223-239. ⟨10.1007/s00200-007-0035-z⟩. ⟨hal-02421066⟩

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