\begin{frame}{Moteur chimique}

  \begin{columns}
    \column{.7\textwidth}\centering
    \begin{itemize}
      \item \structure{Modèle}
        \begin{itemize}
          \item Réaction-Diffusion-Évaporation à la Turing
            \medskip
          \item EDP couplées
            \begin{equation*}
              \frac{\partial\orr\varphi}{\partial t} =
              \orr{\text{X}}(\orr\varphi) +
              \orr{\text{D}} \cdot
              \nabla^2\orr\varphi
              - \orr{\text{E}} \cdot \orr\varphi
            \end{equation*}
        \end{itemize}
      \item \structure{Simulation}
        \begin{itemize}
          \item Discrétisation de type différences finies sur un automate
            cellulaire 2D
            \medskip
          \item Algorithme Propagation Parallèle à la Margolus (PPM)
            \begin{itemize}
              \item Simuler un automate cellulaire sur un support SIMD
              \item Faire correspondre la segmentation de l'espace aux processus
              \item Éviter les accès concurrents à la même zone mémoire
            \end{itemize}
        \end{itemize}
    \end{itemize}

    \column{.2\textwidth}
    \moteurs[structure!30]
  \end{columns}

% Animation du «calque» de démonstration de PPM
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