caa a22 4500 463202988 CHVBK 20180405153117.0 cr unu---uuuuu 170326e20070501xx s 000 0 eng 10.1007/s00200-007-0035-z doi (NATIONALLICENCE)springer-10.1007/s00200-007-0035-z 2LEV-D2P4: a package of high-performance preconditioners for scientific and engineering applications [Elektronische Daten] [Alfredo Buttari, Pasqua D'Ambra, Daniela di Serafino, Salvatore Filippone] 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. Springer-Verlag, 2007 Parallel numerical software nationallicence Algebraic two-level preconditioners nationallicence Sparse linear algebra nationallicence Buttari Alfredo Innovative Computing Lab, Department of Computer Science, University of Tennessee at Knoxville, 1122 Volunteer Blvd., 37996, Knoxville, TN, USA aut D'Ambra Pasqua Institute for High-Performance Computing and Networking, CNR, Via Pietro Castellino 111, 80131, Naples, Italy aut di Serafino Daniela Department of Mathematics, Second University of Naples, Via Vivaldi 43, 81100, Caserta, Italy aut Filippone Salvatore Department of Mechanical Engineering, University of Rome "Tor Vergata”, Viale del Politecnico, 00133, Rome, Italy aut Applicable Algebra in Engineering, Communication and Computing Springer-Verlag 18/3(2007-05-01), 223-239 0938-1279 18:3<223 2007 18 200 https://doi.org/10.1007/s00200-007-0035-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00200-007-0035-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Buttari Alfredo Innovative Computing Lab, Department of Computer Science, University of Tennessee at Knoxville, 1122 Volunteer Blvd., 37996, Knoxville, TN, USA aut NATIONALLICENCE 700 1- D'Ambra Pasqua Institute for High-Performance Computing and Networking, CNR, Via Pietro Castellino 111, 80131, Naples, Italy aut NATIONALLICENCE 700 1- di Serafino Daniela Department of Mathematics, Second University of Naples, Via Vivaldi 43, 81100, Caserta, Italy aut NATIONALLICENCE 700 1- Filippone Salvatore Department of Mechanical Engineering, University of Rome "Tor Vergata”, Viale del Politecnico, 00133, Rome, Italy aut NATIONALLICENCE 773 0- Applicable Algebra in Engineering, Communication and Computing Springer-Verlag 18/3(2007-05-01), 223-239 0938-1279 18:3<223 2007 18 200 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer