\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{shapes.geometric,arrows}

\begin{document}
	\tikzstyle{decision} = [diamond,draw=black,minimum width = 2cm,minimum height = 0.5cm]
		\centering
		\begin{tikzpicture}[node distance = 5cm]

		\node (d1) [decision,minimum width = 5cm] {Check Convergency};
		\node (d2) [decision,right of = d1] {Check Convergency};
		
		\end{tikzpicture}
\end{document}