when the precision is reached or when the maximum internal number of iterations
is reached. The precision and the maximum number of iterations of CGNR method are fixed to 1e-25 and 20 respectively. The size of the Krylov subspace basis $S$ is fixed to 10 vectors.
-\begin{table}[htbp]
-\begin{center}
-\begin{changemargin}{-1.4cm}{0cm}
-\begin{footnotesize}
-\begin{tabular}{|c|c||c|c|c||c|c|c||c|}
-\hline
-\multirow{2}{*}{Pb size}&\multirow{2}{*}{Nb. cores} & \multicolumn{3}{c||}{GMRES} & \multicolumn{3}{c||}{Krylov Multisplitting} & \multirow{2}{*}{Ratio}\\
- \cline{3-8}
- & & Time (s) & nb Iter. & $\Delta$ & Time (s)& nb Iter. & $\Delta$ & \\
-\hline
-$468^3$ & 2,048 (2x1,024) & 299.7 & 41,028 & 5.02e-8 & 48.4 & 691(6,146) & 8.24e-08 & 6.19 \\
-\hline
-$590^3$ & 4,096 (2x2,048) & 433.1 & 55,494 & 4.92e-7 & 74.1 & 1,101(8,211) & 6.62e-08 & 5.84 \\
-\hline
-$743^3$ & 8,192 (2x4,096) & 704.4 & 87,822 & 4.80e-07 & 151.2 & 3,061(14,914) & 5.87e-08 & 4.65 \\
-\hline
-$743^3$ & 8,192 (4x2,048) & 704.4 & 87,822 & 4.80e-07 & 110.3 & 1,531(12,721) & 1.47e-07& 6.39 \\
-\hline
-
-\end{tabular}
-\caption{Results}
-\label{tab1}
-\end{footnotesize}
-\end{changemargin}
-\end{center}
-\end{table}
-
-
-
-
\begin{table}[htbp]
\begin{center}
\begin{changemargin}{-1.8cm}{0cm}
