In this section four kinds of experiments have been performed. First, some experiments on real matrices issued from the sparse matrix florida have been achieved out. Second, some experiments in parallel with some linear problems are reported and analyzed. Third, some experiments in parallèle with som nonlinear problems are illustrated. Finally some parameters of TSIRM are studied in order to understand their influences.\r
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-\subsection{Real matrices in sequential}\r
+\subsection{Real matrices}\r
%%ENDNEW\r
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\end{figure}\r
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\r
-%%%*********************************************************\r
-%%%*********************************************************\r
-\r
-\r
-%%NEW\r
-\r
-\subsection{Nonlinear problems in parallel}\r
-\r
-\r
-\r
\begin{figure}[htbp]\r
\centering\r
\includegraphics[width=0.5\textwidth]{nb_iter_sec_ex45_curie}\r
\end{figure}\r
\r
\r
+%%NEW\r
+\r
+\subsection{Parallel nonlinear problems}\r
+\r
+With PETSc, linear solvers are used inside nonlinear solvers. The SNES\r
+(Scalable Nonlinear Equations Solvers) module in PETSc implements easy to use\r
+methods, like Newton-type, quasi-Newton or full approximation scheme (FAS)\r
+multigrid to solve systems of nonlinears equations. As the SNES is based on the\r
+Krylov methods of PETSc, it is interesting to investigate if the TSIRM method is\r
+also efficient and scalable with non linear problems.\r
+\r
+\r
+\r
\r
\begin{table*}[htbp]\r
\begin{center}\r