X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/Krylov_multi.git/blobdiff_plain/1d227464d1f47ac919cc5fd86c638bd8ded389c7..abcdf8bc25415152bc75bdc02849ccd865d7fac1:/krylov_multi.tex?ds=sidebyside diff --git a/krylov_multi.tex b/krylov_multi.tex index 95e9dcd..1ab94c6 100644 --- a/krylov_multi.tex +++ b/krylov_multi.tex @@ -94,8 +94,6 @@ method. In opposition to traditional multisplitting method that suffer from slow convergence, as proposed in~\cite{huang1993krylov}, the use of a minimization process can drastically improve the convergence. -In this work we develop a new parallel two-stage algorithm for large-scale clusters. Our objective is to mix between Krylov based iterative methods and the multisplitting method to improve the scalability. In fact Krylov subspace methods are well-known for their good convergence compared to others iterative methods. So our main contribution is to use the multisplitting method which splits the problem to solve into different sub-problems in order to reduce the large amount of communications and, to implement both inner and outer iterations as Krylov subspace iterations improving the convergence of the multisplitting algorithm. - The present paper is organized as follows. First, Section~\ref{sec:02} presents some related works and the principle of multisplitting methods. Then, in Section~\ref{sec:03} the algorithm of our Krylov multisplitting