source: trunk/clusters-calcul/presentation.tex @ 372

% $Id: presentation.tex 138 2007-11-30 06:15:07Z nanardon $
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\usepackage{graphicx}

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\title{Computers cluster}
%%\subtitle{}
\author{Olivier Thauvin}
\date{\today}

%\AtBeginSection[]
%{
%\begin{frame}<beamer>
%    \frametitle{Plan}
%    \tableofcontents[currentsection]
%\end{frame}
%}

\begin{document}

\frame{\titlepage}

\section*{Summary}

\begin{frame}{Plan}
\tableofcontents
\end{frame}

\section{Basis}

\begin{frame}[fragile]
\frametitle{Storage Units}
\begin{block}{Storage unit}
\begin{itemize}
\item Units: Bytes
\pause
\item $1kB = 1024B$
\pause
\item $1MB = 1024kB = 1048576B$
\pause
\item $1TB = 1024GB = 1048576MB$
\pause
\item $1EB = 1024PB = 1048576TB$
\end{itemize}
\end{block}

\begin{block}{practice}
\begin{itemize}
\item $Floppy Disk = 1.4 MB$
\pause
\item $CD-ROM = 650MB$
\item $DVD = 4GB$
\pause
\item $mp3 = 4MB$
\pause
\item $GOMOS~data = 15TB$ (medium project)
\end{itemize}
\end{block}
\end{frame}

\begin{frame}[fragile]
\frametitle{Network Units}
\begin{block}{Network unit}
\begin{itemize}
\item Units: Bits
\pause
\item $1kb = 1024b$
\pause
\item $1Bytes = 8bits$
\end{itemize}
\end{block}
\pause

\begin{block}{practice}
\begin{itemize}
\item $RTC = 56kb$
\item $ADSL \simeq 10Mb$
\pause 
\item $Internet~UPMC = 1Gb$
\item $Internet~DDU = 1Mb$ (every 15 minutes)
\end{itemize}
\end{block}
\end{frame}

\begin{frame}
\frametitle{Computation Units}
\begin{block}{Flops}
\begin{itemize}
\item floating-point operations per second
\item example: $1/2 \Rightarrow 1 flops/s$
\end{itemize}
\end{block}
\pause
\begin{block}{Your computer}
\begin{itemize}
\item PC CPU: 1Gflops to 7Gflops
\item Graphic card: 250Gflops to 700Gflops
\end{itemize}
\end{block}
\pause
\begin{block}{Bigger cluster around the world}
LLNL (USA, defense): 20132700Gflops
\end{block}
\end{frame}

\section{Models}

\begin{frame}[fragile]
\frametitle{Size issues}
\begin{block}{How it works}
\begin{itemize}
\item an initial state: point representing atmosphere
\item a loop reprensenting time
  \begin{itemize}
  \item applying changes
  \item storing new step
  \end{itemize}
\end{itemize}
\end{block}
\pause

\begin{block}{Examples}
\begin{itemize}
\item Cube: ozone level / $m^3$ for 1km3: $1000 * 1000 * 1000 = 10^9 \simeq 1GB$
\pause
\item loop: 1 second step for 1 hour: 3600 steps.
\end{itemize}
Data to store: around 3TB.
\end{block}
\end{frame}

\section{Clusters}

\begin{frame}
\frametitle{CICLAD}
\begin{block}{}
\begin{itemize}
\item managed by IPSL
\item located at Paris (UPMC)
\pause
\item Storage: 700TB
\item 18 calcul node (288 CPU)
\item 12 storage node, 600 hard drive
\end{itemize}
\end{block}
\end{frame}

\begin{frame}
\frametitle{CICLAD}
\includegraphics[height=0.9\textheight]{ciclad}
\end{frame}

\begin{frame}
\frametitle{CLIMSERV}
\begin{block}{}
\begin{itemize}
\item managed by IPSL
\item located at Palaiseau
\pause
\item Storage: 700TB
\item 23 calcul node (248 CPU)
\end{itemize}
\end{block}
\end{frame}

\begin{frame}
\frametitle{Other Clusters}
\begin{block}{IDRIS}
\begin{itemize}
\item Managed by CNRS
\item Several clusters
\end{itemize}
\end{block}
\pause
\begin{block}{CINES}
\begin{itemize}
\item Centre Informatique National de l’Enseignement Supérieur (Montpellier)
\item Several clusters, (ex: 23040 CPUs on 2880 nodes)
\end{itemize}
\end{block}
\pause
\begin{block}{CCRT}
\begin{itemize}
\item CEA's cluster
\item Severals clusters (ex: 8736 CPUs on 1092 nodes)
\end{itemize}
\end{block}
\end{frame}

\begin{frame}
\begin{block}{}
\includegraphics[width=0.9\textwidth]{panoramique-IDRIS--2011-web}

\includegraphics[width=0.9\textwidth]{vue_diago-6}
\end{block}
\end{frame}

\section*{Fin}

\begin{frame}{Questions ?}
\vfill
\begin{block}{}
\emph{Je suis fascine par l'air. Si on enlevait l'air du ciel, tous les oiseaux
tomberaient par terre....Et les avions aussi....}

\hfill{}J.C. VanDamme - Philosophe
\end{block}

\begin{block}{}
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\includegraphics[width=0.4\textwidth]{Abrichatons}
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\end{block}
\end{frame}

\end{document}