perf.tex

\begin{frame}
  \frametitle{Performance Analysis Using Projections}
  \begin{itemize}
  \item Instrumentation and measurement
  \begin{itemize}
  \item Link program with {\tt -tracemode projections or summary}
  \item Trace data is generated automatically during run
  \item User events can be easily inserted as needed
  \end{itemize}
  \item Projections: visualization and analysis
  \begin{itemize}
  \item Scalable tool to analyze up to 300,000 log files
  \item A rich set of tool features : time profile, time lines, usage profile, histogram, extrema tool
  \item Detect performance problems: load imbalance, grain size, communication bottleneck, etc 
  \end{itemize}
  \item Demo of using Projections to analyze performance bottleneck
  \end{itemize}

\end{frame}

\begin{frame}
\frametitle{Using Projections }
\begin{itemize}
\item Example
\begin{itemize}
\item Trying to identify the next performance obstacle for NAMD
\begin{itemize}
\item Running on 8192 processors, with 1 million atom simulation
\item Jaguar Cray XK6 
\item Test scenario: with PME every step
\end{itemize}
\end{itemize}
\end{itemize}
\end{frame}

\begin{frame}{Time Profile}
 \includegraphics<1>[width=0.9\textwidth]{figures/prj1M8KTimeprofile.png}
\end{frame}

\begin{frame}{Extrema Tool for Least Idle Processors}
\includegraphics<1>[width=0.9\textwidth]{figures/prj1M8KExtrema.png}
\end{frame}

\begin{frame}{Time Lines with Message Back Tracing}
\centering
\includegraphics<1>[width=0.9\textwidth]{figures/prj1M8KTimeline.png}
\end{frame}


\begin{frame}{Communication over Time for all Processors}
 \includegraphics<1>[width=0.9\textwidth]{figures/prj1M8KCommtime.png}
\end{frame}