

\subsection{\bf A $12^3$ Problem Lattice}
\subsection{\bf Decomposed Onto a 64-node Machine}
\subsection{\bf Arranged as a $4^3$ Machine Lattice}

\begin{slide}
\begin{center}
\centerline{\psfig{figure=fig3.begin.ps,width=4.5in}}
A $12^3$ Problem Lattice Decomposed onto a 64-node Machine
Arranged as a $4^3$ Machine Lattice.  Points labeled X (``red'') or 
$\bullet$ (``black'') can be updated at the same time.
\end{center}
\end{slide}
