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@@ -2,11 +2,11 @@ \input{style/style.tex} \begin{document} -\frame{\titlepage \centering \footnotesize Online slides: \url{https://www.overleaf.com/read/tknhxmqfgtdy\#87413e}} +\frame{\titlepage \centering \footnotesize Online slideshow: \url{mjkw.pl/vu/bsc}} \begin{frame}\frametitle{Motivation} \begin{tcolorbox}[title=Context] - 21\textsuperscript{st} century datacenters are primarily heterogeneous~\cite{DBLP:conf/date/MilojicicFDR21} and + 21\textsuperscript{st} century datacenters (DC) are mostly heterogeneous~\cite{DBLP:conf/date/MilojicicFDR21} and modern computational needs of AI drive managers to diversify datacenters even more~\cite{DBLP:journals/computer/AthavaleBBMMPS24}. In result datacenters become extremely complex and hard to operate with millions of CPU's, GPU's etc. \end{tcolorbox} @@ -57,72 +57,95 @@ \begin{frame}\frametitle{\textbf{RQ1}: Literature Review I} \begin{tcolorbox}[title=Results] - This is a dummy sentence meant to make the tcolorbox have more than 2 lines of text width so that I am able to show the text and the table spacing better. - I hope it fits its purpose well. + The literature on DCDTs is scarce. + Some systems barely classify as DTs (\emph{e.g.,} Kalibre~\cite{DBLP:conf/sensys/WangZD0TCWZ20}, ChatTwin~\cite{DBLP:conf/sensys/LiW0Z0T23}). + Existing deployments specialize in \textcolor{Red}{Cooling and Heat Modelling}, together with \textcolor{Red}{3D visualizations}. + Most lack crucial predictive DC behaviour modelling. \end{tcolorbox} \input{images/table.tex} + % Research on DTs for datacenters have been separate, siloed efforts focused on either datacenter cooling, network performance, power consumption or visualization efforts. + % CFD usually means Navier-Stokes equations. + % CFD models take ages to compute. \end{frame} \begin{frame}\frametitle{\textbf{RQ1}: Literature Review II} % Mandatory: split the figure into 2: top and bottom, and that way you can fill in the entire slide nicely. - \begin{tcolorbox}[title=A generic system model] - - This is a dummy sentence meant to make the tcolorbox have more than 2 lines of text width so that I am able to show the text and the table spacing better. + \begin{tcolorbox}[title=A holistic DCDT system model] + We propose a generic model of datacenter digital twinning that can be mapped to each system from \textbf{Table 1.1}. To answer \textbf{RQ2}, we design a ref. arch. for \emph{Operations Model}. \end{tcolorbox} \begin{center} \includegraphics[width=0.8\textwidth]{images/system_model2.pdf} \end{center} + % The reason why the cooling system is in the graph is because of the fact that 40\% of total energy consumed in DCs comes from cooling~\cite{DBLP:conf/noms/ZhangZLZWC22}. + % It has come to the point where datacenters are being build in the Pan-Arctic region, such as Finland,Russia,Sweden etc. with Iceland leading in number of DCs https://www.datacentermap.com/iceland/ + % The SmarDC digital twin is purely to get more training data for AI models. + % Not really a digital twin per se. \tiny - \textbf{Figure 1.3:} To answer \textbf{RQ1} we designed a generic datacenter digital twin system model based on a comprehensive literature review and findings from \textbf{Table 1.1}. + \textbf{Figure 1.3:} To answer \textbf{RQ1} we designed a generic datacenter digital twin system model based on a comprehensive literature review and findings from \textbf{Table 1.1}. The \emph{Infrastructure Model} simulates the structure of the DC and the \emph{Operations model} simulates the behaviour of the DC. % Consider splitting the figure into 2 a.k.a. top and bottom. + % By the AIAA definition, the DT mimicks the structure and behaviour. % Data Lake -> Data Storage + % Use cases of DT's found by Brewer et al.: augmented reality, forensic analysis and diagnostics, predictive modelling, failure detection, operational optimization, ``what-if''' scenarios and virtual prototyping. \end{frame} \begin{frame}\frametitle{\textbf{RQ2}: Reference Architecture} \begin{minipage}[b]{0.45\linewidth} + \begin{tcolorbox}[title=Use cases] + + \end{tcolorbox} + \vspace{1cm} + \end{minipage} + \begin{minipage}[b]{0.45\linewidth} \begin{center} \includegraphics[width=1.25\textwidth]{images/ref_architecture.pdf} \end{center} \vspace{-0.2cm} \tiny - \textbf{Figure 1.4:} The predictive datacenter digital twin architecture. - \end{minipage} - \hfill + \textbf{Figure 1.4:} The predictive datacenter digital twin architecture. \end{minipage} + % We decided to use discrete-event simulation, as opposed to computational fluid dynamics because of the high overheads of development time needed for CFD. + % CFD simply takes too long to run, making it unfeasible for real-time analytics and simulation. + % Citing ExaDigit: [CFD] they are also more computationally expensive, generally making real-time operation unfeasible. % Consider adding this minipage directly to the ``draw.io'' diagram - \begin{minipage}[b]{0.42\linewidth} - \footnotesize - \textbf{Functional Requirements} - \tiny - - \textbf{FR1:} The system shall be able to - - \textbf{FR2:} The system should be able to - - \textbf{FR3:} The system needs to do this and that +\end{frame} - \vspace{1cm} - \footnotesize - \textbf{Non-functional Requirements} +\begin{frame}\frametitle{\textbf{RQ3}: Experimental Setup} + \begin{minipage}[b]{0.45\linewidth} + \begin{center} + \includegraphics[width=1.2\linewidth]{images/predictive_analyticsv2.pdf} + \end{center} + \vspace{-0.3cm} \tiny - - \textbf{NFR1:} The system shall be able to - - \textbf{NFR2:} The system should be able to - - \textbf{NFR3:} The system needs to do this and that - - \vspace{3cm} + \textbf{Figure 1.5:} Evaluating DCDTs is difficult. To answer \textbf{RQ3} we provide a novel way to evaluate datacenter digital twins through discrete-event simulation. + \end{minipage} + \hfill + \begin{minipage}[b]{0.45\linewidth} + \begin{center} + \includegraphics[width=0.7\linewidth]{images/scrs.jpg} + \end{center} + \vspace{-0.2cm} + \tiny + \textbf{Figure 1.6:} The software stack used to implement \emph{Sunfish}. + The time-series data flows initially to the \texttt{Grafana} dashboard, \texttt{PostgreSQL} database and \texttt{Redis} cache, as suggested in~\cite{DBLP:conf/sc/TaheriBPRHDEWPM24}. \end{minipage} \end{frame} \begin{frame}\frametitle{\textbf{RQ3}: Experimental Results I} \begin{tcolorbox}[title=Main Finding I] - Here explain what did you find. + On average, \emph{Sunfish} achieves 12.17\% less failures per task than baseline (OpenDC). + Insights from predictive digital twinning yield noticeable performance difference. \end{tcolorbox} - Here goes the figure that backs up claim in Main Finding I. - Evidence for Main Finding I. + \begin{minipage}[b]{0.45\linewidth} + \begin{center} + \includegraphics[width=1.1\textwidth]{images/18_Jun_2026_201008.pdf} + \end{center} + \vspace{-0.3cm} + \tiny + \textbf{Figure 1.5:} Experiment 1 -- on the \emph{x}-axis are different community failure traces. + On the \emph{y}-axis is the mean number of times a task has failed, during the entire workload. + Vertical bars is standard deviation, measured over 5 repetitions. + \end{minipage} % Explain what the axis are in the figure caption. % Talk about the experimental setup in the figure. % Give more reliable results than just numbers -- do statistical testing, i.e., standard deviation, confidence intervals. @@ -133,7 +156,7 @@ \begin{tcolorbox}[title=Main Finding II] Here explain what did you find. \end{tcolorbox} - Here goes the figure that backs up claim in Main Finding II. + \end{frame} \begin{frame}\frametitle{Key Takeaways} @@ -159,7 +182,7 @@ \end{frame} -\setcounter{framenumber}{3} +\setcounter{framenumber}{4} \setbeamertemplate{footline}[page number]{ % Unfortunately this must remain here. |