2024-12-04 09:59:31 +01:00
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\section[Wrapping up:\\the \acombined{} model]{Wrapping up: the \acombined{} model}
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2024-11-24 21:07:50 +01:00
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\begin{frame}
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\begin{minipage}[c]{0.68\textwidth}
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\centering
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\includegraphics[height=0.9\textheight]{patate_apres.jpg}\\
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\end{minipage}\hfill\begin{minipage}[c]{0.30\textwidth}
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\Large+ tooled analysis of\\
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existing analyzers
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\end{minipage} \\
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\vfill
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\pause{}
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\begin{center}
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\textbf{\Large$\leadsto$ Let's make a model for the Cortex A72!}
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\end{center}
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\end{frame}
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\begin{frame}{From dependencies to cycles}
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\begin{itemize}
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\item \staticdeps{}: set to also report \alert{register} dependencies.
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\item Unroll $\kerK$ to fill the ROB
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\item Build \alert{dependencies graph}: edges are dependencies,
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weighted by \alert{source instruction latency} (given by \palmed).
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\item Compute \alert{longest path}, divide by repetitions of $\kerK$
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\end{itemize}
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\begin{center}
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\textbf{$\leadsto$ lower bound on execution time}
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\end{center}
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\vfill
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\begin{center}
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\textbf{Combine frontend, backend, critical by taking the max}
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\end{center}
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\end{frame}
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\begin{frame}
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\begin{columns}
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\column{\dimexpr\paperwidth-8pt}
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\centering
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\begin{minipage}[c]{0.68\textwidth}
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\centering
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\footnotesize
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\begin{tabular}{l r r r r r r}
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\toprule
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\textbf{Bencher} &
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\textbf{Fail} &
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\textbf{MAPE} & \textbf{Median} & \textbf{Q1} & \textbf{Q3} & \textbf{$K_\tau$} \\
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& (\%) & (\%) & (\%) & (\%) & (\%) & \\
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\midrule
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2024-11-26 18:37:45 +01:00
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A72 combined & 0.51 & 19.26 & 12.98 & 5.57 & \alert{25.38} & 0.75\\
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llvm-mca & 0.06 & 32.60 & \alert{25.17} & 8.84 & 59.16 & 0.69\\
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2024-11-24 21:07:50 +01:00
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Osaca (backend) & 0.17 & 49.33 & 50.19 & 33.53 & 64.94 & 0.67\\
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Osaca (crit. path) & 0.17 & 84.02 & 70.39 & 40.37 & 91.47 & 0.24\\
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\bottomrule
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\end{tabular}
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\end{minipage}
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\hfill
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\begin{minipage}[c]{0.3\textwidth}
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\centering
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\includegraphics[width=\textwidth]{cesasme_a72combined_boxplot.svg}
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\end{minipage}
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\end{columns}
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\end{frame}
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