\begin{tabular}{|*{7}{c|}}
\hline
& & Max & Min & Diff. & & \\
- Cluster & CPU & Freq. & Freq. & Freq. & No. of cores & Dynamic power \\
+ Cluster & CPU & Freq. & Freq. & Freq. & Cores & Dynamic power \\
Name & model & GHz & GHz & GHz & per CPU & of one core \\
\hline
& Intel & & & & & \\
\begin{tabular}{|*{4}{c|}}
\hline
\multirow{2}{*}{Scenario name} & \multicolumn{3}{c|} {The participating clusters} \\ \cline{2-4}
- & Cluster & Site & No. of nodes \\
+ & Cluster & Site & Nodes per cluster \\
\hline
\multirow{3}{*}{Two sites / 16 nodes} & Taurus & Lyon & 5 \\ \cline{2-4}
& Graphene & Nancy & 5 \\ \cline{2-4}
\caption{The multicores scenarios}
\begin{tabular}{|*{4}{c|}}
\hline
-Scenario name & Cluster name & \begin{tabular}[c]{@{}c@{}}No. of nodes\\ in each cluster\end{tabular} &
- \begin{tabular}[c]{@{}c@{}}No. of cores\\ for each node\end{tabular} \\ \hline
+Scenario name & Cluster name & Nodes per cluster &
+ Cores per node \\ \hline
\multirow{3}{*}{One core per node} & Graphite & 4 & 1 \\ \cline{2-4}
& Graphene & 14 & 1 \\ \cline{2-4}
& Griffon & 14 & 1 \\ \hline