From 1aae0aa7fe4cab80db08382a65985baef5853fb1 Mon Sep 17 00:00:00 2001 From: raphael couturier Date: Mon, 7 Apr 2014 20:47:26 +0200 Subject: [PATCH 1/1] new --- krylov_multi.tex | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/krylov_multi.tex b/krylov_multi.tex index 61c1e28..3482e92 100644 --- a/krylov_multi.tex +++ b/krylov_multi.tex @@ -29,7 +29,7 @@ \begin{abstract} -In this paper we revist the krylov multisplitting algorithm presented in +In this paper we revisit the krylov multisplitting algorithm presented in \cite{huang1993krylov} which uses a scalar method to minimize the krylov iterations computed by a multisplitting algorithm. Our new algorithm is based on a parallel multisplitting algorithm with few blocks of large size using a @@ -328,6 +328,31 @@ synchronizations by using the MPI collective communication subroutines. +\section{Experiments} + +In order to illustrate the interest of our algorithm. We have compared our +algorithm with the GMRES method which a very well used method in many +situations. We have chosen to focus on only one problem which is very simple to +implement: a 3 dimension Poisson problem. + +\begin{equation} +\left\{ + \begin{array}{ll} + \nabla u&=f \mbox{~in~} \omega\\ + u &=0 \mbox{~on~} \Gamma=\partial \omega + \end{array} + \right. +\end{equation} + +After discretization, with a finite difference scheme, a seven point stencil is +obtained. + +\section{Conclusion and perspectives} + +Other applications (=> other matrices)\\ +Larger experiments\\ +Async\\ +Overlapping %%%%%%%%%%%%%%%%%%%%%%%% -- 2.39.5