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Simultaneous solution of large-scale linear systems and eigenvalue problems with a parallel GMRES method

✍ Scribed by George Pashos; Michail E. Kavousanakis; Antony N. Spyropoulos; John A. Palyvos; Andreas G. Boudouvis


Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
943 KB
Volume
227
Category
Article
ISSN
0377-0427

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✦ Synopsis


A method for simultaneous solution of large and sparse linearized equation sets and the corresponding eigenvalue problems is presented. Such problems arise from the discretization and the solution of nonlinear problems with the finite element method and Newton iteration. The method is based on a parallel version of the preconditioned GMRES(m) by deflation. The parallel code exploits the architecture of the computational clusters using the MPI (Message Passing Interface). The convergence rate, the parallel speedup and the memory requirements of the proposed method are reported and evaluated.


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✍ Radek Tezaur; Antonini Macedo; Charbel Farhat 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 248 KB

## Abstract An extension of the FETI‐H method is designed for the solution of acoustic scattering problems with multiple right‐hand sides. A new local pre‐conditioning of this domain decomposition method is also presented. The potential of the resulting iterative solver is demonstrated by numerical