\end{table}
\subsubsection{Simulations for various grid architectures and scaling-up matrix sizes}
-\ \\
-% environment
+
In this section, we analyze the simulations conducted on various grid
configurations and for different sizes of the 3D Poisson problem. The parameters
of the network between clusters is fixed to $N2$ (see
\subsubsection{Network latency impacts on performance}
-\ \\
+
\begin{table} [ht!]
\centering
\begin{tabular}{r c }
\subsubsection{Network bandwidth impacts on performance}
-\ \\
+
\begin{table} [ht!]
\centering
\begin{tabular}{r c }
of $40\%$ which is only around $24\%$ for the classical GMRES.
\subsubsection{Input matrix size impacts on performance}
-\ \\
+
\begin{table} [ht!]
\centering
\begin{tabular}{r c }