Commits March 2012

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[svn:einsteintoolkit] pyGWAnalysis/trunk/DataAnalysis/ (Rev. 10)
by reisswig＠tapir.caltech.edu 27 Mar '12

27 Mar '12

User: reisswig Date: 2012/03/27 07:41 PM Modified: /trunk/DataAnalysis/ DataAnalysis.py Log: Fix to previous commit. File Changes: Directory: /trunk/DataAnalysis/ =============================== File [modified]: DataAnalysis.py Delta lines: +3 -3 =================================================================== --- trunk/DataAnalysis/DataAnalysis.py 2012-03-28 00:38:58 UTC (rev 9) +++ trunk/DataAnalysis/DataAnalysis.py 2012-03-28 00:41:26 UTC (rev 10) @@ -737,8 +737,8 @@ # first, compute DeltaPhi analytically according to Boyle et al. DeltaPhi = 0 for ii in range (0, subDF1.Length()): - DeltaPhi += (subDF1.f[ii]-subDF2.f[ii]) / (subDF1.Length()-1) - DeltaPhi /= (x1-x0) + DeltaPhi += (subDF1.f[ii]-subDF2.f[ii]) + DeltaPhi /= (subDF1.Length()-1) # Now compute error err = 0 for ii in range (0, subDF1.Length()): @@ -776,7 +776,7 @@ DeltaPhi = 0 for ii in range (0, subDF1.Length()): DeltaPhi += (subDF1.f[ii]-subDF2.f[ii]) / (subDF1.Length()-1) - DeltaPhi /= (x1-x0) + DeltaPhi /= (subDF1.Length()-1) err = 0 for ii in range (0, subDF1.Length()): err += (subDF1.f[ii]-subDF2.f[ii]-DeltaPhi)**2

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[svn:einsteintoolkit] pyGWAnalysis/trunk/DataAnalysis/ (Rev. 9)
by reisswig＠tapir.caltech.edu 27 Mar '12

27 Mar '12

User: reisswig Date: 2012/03/27 07:38 PM Modified: /trunk/DataAnalysis/ DataAnalysis.py Log: PhaseAlignOverRange: Fixed a bug in phase minimization found by Nick. File Changes: Directory: /trunk/DataAnalysis/ =============================== File [modified]: DataAnalysis.py Delta lines: +5 -5 =================================================================== --- trunk/DataAnalysis/DataAnalysis.py 2012-03-21 15:30:39 UTC (rev 8) +++ trunk/DataAnalysis/DataAnalysis.py 2012-03-28 00:38:58 UTC (rev 9) @@ -737,13 +737,13 @@ # first, compute DeltaPhi analytically according to Boyle et al. DeltaPhi = 0 for ii in range (0, subDF1.Length()): - DeltaPhi += subDF1.f[ii]-subDF2.f[ii] + DeltaPhi += (subDF1.f[ii]-subDF2.f[ii]) / (subDF1.Length()-1) DeltaPhi /= (x1-x0) # Now compute error err = 0 for ii in range (0, subDF1.Length()): err += (subDF1.f[ii]-subDF2.f[ii]-DeltaPhi)**2 - err = sqrt(err) + #err = sqrt(err) # sqrt not necessary #print minErr, err if (err < minErr): minErr = err @@ -775,12 +775,12 @@ # first, compute DeltaPhi analytically according to Boyle et al. DeltaPhi = 0 for ii in range (0, subDF1.Length()): - DeltaPhi += subDF1.f[ii]-subDF2.f[ii] - DeltaPhi /= (x1-x0) + DeltaPhi += (subDF1.f[ii]-subDF2.f[ii]) / (subDF1.Length()-1) + DeltaPhi /= (x1-x0) err = 0 for ii in range (0, subDF1.Length()): err += (subDF1.f[ii]-subDF2.f[ii]-DeltaPhi)**2 - err = sqrt(err) + #err = sqrt(err) # sqrt not necessary #print err if (err < minErr): minErr = err

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[svn:einsteintoolkit] Workshop_Spring_2012/ (Rev. 12)
by roland.haas＠physics.gatech.edu 27 Mar '12

27 Mar '12

User: rhaas Date: 2012/03/27 12:52 PM Modified: / introduction.tex Log: add bare-bones information about Roland Haas File Changes: Directory: / ============ File [modified]: introduction.tex Delta lines: +5 -1 =================================================================== --- introduction.tex 2012-03-26 17:12:15 UTC (rev 11) +++ introduction.tex 2012-03-27 17:52:30 UTC (rev 12) @@ -102,8 +102,12 @@ \includegraphics[height=4cm]{roland} \end{minipage} \begin{minipage}{0.6\linewidth} + \todo{RH: do we really want to introduce each of us individually?} \begin{itemize} - \item . + \item Postdoc at TAPIR + \item Interested in mixed binary systems. + \item PhD in physics, University of Guelph, Canada + \item Einstein Toolkit Maintainer \end{itemize} \end{minipage} \end{frame}

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[svn:einsteintoolkit] www/about/members/ (Rev. 785)
by knarf＠cct.lsu.edu 26 Mar '12

26 Mar '12

User: knarf Date: 2012/03/26 10:31 PM Modified: /about/members/ members.txt Log: new member File Changes: Directory: /about/members/ ========================== File [modified]: members.txt Delta lines: +3 -0 =================================================================== --- about/members/members.txt 2012-03-16 13:51:19 UTC (rev 784) +++ about/members/members.txt 2012-03-27 03:31:44 UTC (rev 785) @@ -27,6 +27,9 @@ http://english.cas.cn/ST/ Chinese Academy of Sciences Mew Bing Wan +http://www.emory.edu/home/index.html Emory University + Andrew Vu + http://www.fau.edu/ Florida Atlantic University Petr Tsatsin Konstantin Yakunin

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[svn:einsteintoolkit] Workshop_Spring_2012/example_wavetoy/ (Rev. 11)
by roland.haas＠physics.gatech.edu 26 Mar '12

26 Mar '12

User: rhaas Date: 2012/03/26 12:12 PM Added: /example_wavetoy/ Makefile, example_wavetoy.tex Log: import rev 187 of example_wavetoy from svn.cct.lsu.edu/repos/cactus/tutorials/introduction File Changes: Directory: /example_wavetoy/ ============================ File [added]: Makefile Delta lines: +10 -0 =================================================================== --- example_wavetoy/Makefile (rev 0) +++ example_wavetoy/Makefile 2012-03-26 17:12:15 UTC (rev 11) @@ -0,0 +1,10 @@ +all: example_wavetoy.pdf + +%.pdf: %.tex + pdflatex $* + +clean: + /bin/bash -exec "rm -f example_wavetoy.{aux,log,nav,out,snm,pdf,toc} *~" + +.PHONY: all clean + File [added]: example_wavetoy.tex Delta lines: +590 -0 =================================================================== --- example_wavetoy/example_wavetoy.tex (rev 0) +++ example_wavetoy/example_wavetoy.tex 2012-03-26 17:12:15 UTC (rev 11) @@ -0,0 +1,590 @@ +\input{../preamble.tex} +\usepackage{ragged2e} +\usecolortheme[RGB={200,200,200}]{structure} + +\begin{document} + +\frame{ \frametitle{WaveToy Thorn: Wave Equation} + For a given source function $S(x,y,z,t)$ find a scalar wave + field $\varphi(x,y,z,t)$ inside the domain $\mathcal{D}$ + with a boundary condition: + \begin{columns}[t] + \column{.3\textwidth} + \begin{figure}[!htp] + \begin{center} + \begin{tikzpicture}[rotate=5,scale=1.2] + \filldraw[fill=green!60!white, draw=green!50!black, thick] + (-1,-1) rectangle (1,1); + \draw (0,0) node {{\large $\mathcal{D}$}}; + \draw (1.4,0.2) node {$\partial\mathcal{D}$}; + \draw[->,thick,color=red] (1.1,0.2) -- (1,0.2); + \end{tikzpicture} + \end{center} + \end{figure} + + \column{.6\textwidth} + \begin{itemize} + \item inside $\mathcal{D}$: + \begin{equation*} + \frac{\partial^2\varphi}{\partial t^2} = c^2\Delta\varphi + S + \end{equation*} + \item on the boundary $\partial\mathcal{D}$: + \begin{equation*} + \varphi|_{\partial\mathcal{D}} = \varphi(t=0) + \end{equation*} + \end{itemize} + \end{columns} +} + +\frame{ \frametitle{WaveToy Thorn: Discretization} + Discretization: \\ + approximating continuous function $\varphi(x,t)$ + with a grid function $\varphi^{(n)}_{i}$: + \begin{columns}[t] + \column{.2\textwidth} + \begin{figure}[!htp] + \begin{center} + \begin{tikzpicture}[scale=1.1] + \draw (-1,0) -- (1,0); + \draw (0,-1) -- (0,1); + \scope[fill=green!50!blue, draw=black] + \filldraw (0,0) circle (0.07cm); + \filldraw (1,0) circle (0.07cm); + \filldraw (0,1) circle (0.07cm); + \filldraw (-1,0) circle (0.07cm); + \filldraw (0,-1) circle (0.07cm); + \endscope + \scope[xshift=0.45cm,yshift=0.25cm] + \draw (0,0) node {{\tiny $\varphi^{(n)}_{i}$}}; + \draw (1,0) node {{\tiny $\varphi^{(n)}_{i+1}$}}; + \draw (0,1) node {{\tiny $\varphi^{(n+1)}_{i}$}}; + \draw (-1,0) node {{\tiny $\varphi^{(n)}_{i-1}$}}; + \draw (0,-1) node {{\tiny $\varphi^{(n-1)}_{i}$}}; + \endscope + \end{tikzpicture} + \end{center} + \end{figure} + + \column{.8\textwidth} + \begin{eqnarray*} + \\ + &\frac{\partial^2\varphi}{\partial t^2} = + c^2 (\partial_x^2\varphi) + S \\ + &\Downarrow (c\equiv1)\\ + &\frac{\varphi^{(n+1)}_{i} - 2\varphi^{(n)}_{i}+\varphi^{(n-1)}_{i}} + {2\Delta t^2} = + \frac{\varphi^{(n)}_{i+1} - 2\varphi^{(n)}_{i}+\varphi^{(n)}_{i-1}} + {2\Delta x^2} + S^{(n)}_{i} + \end{eqnarray*} + \end{columns} +} + +\frame{ \frametitle{WaveToy Thorn} + Thorn structure: + + \begin{columns}[t] + \column{.4\textwidth} + \begin{exampleblock}{interface.ccl} + \begin{itemize} + \item grid function {\color{blue}phi[3]}: + \end{itemize} + \begin{figure}[!htp] + \begin{center} + \begin{tikzpicture} + \scope[fill=white!90!green, draw=black] + \filldraw (-1.5,-1) -- (0.5,-1) -- (1.5,-0.2) -- (-0.5,-0.2) -- cycle; + \filldraw (-1.5,-0.4) -- (0.5,-0.4) -- (1.5,0.4) -- (-0.5,0.4) -- cycle; + \filldraw (-1.5,0.2) -- (0.5,0.2) -- (1.5,1) -- (-0.5,1) -- cycle; + \endscope + \scope[fill=green!50!blue, draw=black, dashed, very thin] + \draw (-0.6,0) -- (0.6,0); + \draw (0,-0.6) -- (0,0.6); + \draw (-0.35,-0.3) -- (0.35,0.3); + \filldraw (0,0) circle (0.07cm); + \filldraw (0.6,0) circle (0.07cm); + \filldraw (0,0.6) circle (0.07cm); + \filldraw (-0.6,0) circle (0.07cm); + \filldraw (0,-0.6) circle (0.07cm); + \filldraw (-0.35,-0.3) circle (0.07cm); + \filldraw (0.35,0.3) circle (0.07cm); + \endscope + \scope[left=2pt,yshift=0.2cm] + \draw (-1.5,-1) node {\color{blue}phi\_p\_p}; + \draw (-1.5,-0.4) node {\color{blue}phi\_p}; + \draw (-1.5, 0.2) node {\color{blue}phi}; + \endscope + \scope[xshift=0.6cm,yshift=0.2cm] + \draw (-1.5,-1) node {{\tiny $\varphi^{(n-2)}$}}; + \draw (-1.5,-0.4) node {{\tiny $\varphi^{(n-1)}$}}; + \draw (-1.5, 0.2) node {{\tiny $\varphi^{(n)}$}}; + \endscope + %\includegraphics[height=0.3\textheight]{time_levels} + \end{tikzpicture} + \end{center} + \end{figure} + \begin{itemize} + \item {\small Boundary\_SelectVarForBC} + \end{itemize} + \end{exampleblock} + + \column{.4\textwidth} + \begin{exampleblock}{param.ccl} + \begin{itemize} + \item Parameters of initial Gaussian pulse: + amplitude {\color{brown}$A$}, + radius {\color{brown}$R$}, + width {\color{brown}$\sigma$} + \end{itemize} + \end{exampleblock} + + \begin{exampleblock}{schedule.ccl} + \begin{itemize} + \item WaveToy\_InitialData + \item WaveToy\_Evolution + \item WaveToy\_Boundaries + \end{itemize} + \end{exampleblock} + \end{columns} +} + +% \frame{ \frametitle{WaveToy Thorn} +% \begin{itemize} +% \item Choose initial values $\Phi_{i,j,k,0}$; +% \item Loop: +% \begin{itemize} +% \item Calculate field at current time based on discretized wave equation +% \item On boundary points, where derivatives may not be present, apply chosen +% boundary conditions +% \end{itemize} +% \end{itemize} +% } + +\frame{ \frametitle{WaveToy Thorn: Algorithm Illustration} + \begin{columns}[t] + \column{.7\textwidth} + \begin{figure}[!htp] + \begin{center} + \begin{tikzpicture} + + %\draw[->] (0,0) -- (1,1); + % Step 1: axes and grid + \draw[->,very thin] (-.6,-.4) -- (6,-.4); + \draw[->,very thin] (-.4,-.6) -- (-.4,3); + \draw[left=2pt] (-.4,2.5) node {$t$}; + \draw[above=2pt] (5.8,-0.4) node {$x$}; + + \uncover<1>{ + \draw[xstep=.6cm,ystep=.4cm,gray,dashed] + (0,0) grid(5.4cm,2.6cm); + }% + + % Step 2: splitting between two processors + \uncover<2->{ + \draw (0,2.8) -- (.6,3.2) -- (2.4,3.2) -- (3,2.8); + \draw[above=1pt] (1.4,3.2) node {\emph{PROC1}}; + + \draw[xshift=2.4cm] (0,2.8) -- (.6,3.2) -- (2.4,3.2) -- (3,2.8); + \draw[above=1pt] (3.8,3.2) node {\emph{PROC2}}; + }% + \uncover<2-4>{ + \draw[xstep=.6cm,ystep=.4cm,gray,dashed] + (0,0) grid (3.0cm,2.6cm); + \draw[xstep=.6cm,ystep=.4cm,gray,dashed,xshift=0.05cm,yshift=0.05cm] + (2.4,0) grid (5.4cm,2.6cm); + }% + + % Step 3: memory "allocations" + \uncover<3>{ + \draw[color=blue] (1.5,-0.6) node {\tiny x, phi, phi\_p, phi\_p\_p}; + \draw[color=blue] (4.2,-0.6) node {\tiny x, phi, phi\_p, phi\_p\_p}; + }% + + % Step 4: CoordBase / CartGrid3D + \uncover<4->{ + \foreach \x in {0.0,0.6,1.2,1.8,2.4,3.0,3.6,4.2,4.8,5.4} + \draw (\x cm,-0.4cm) node[anchor=south] {{\tiny $\x$}}; + \draw[very thick,color=brown,xstep=0.6cm,ystep=1cm,yshift=-0.4cm] + (0cm,-1pt) grid (3.0cm,1pt); + \draw[color=blue] (1.5,-0.6) node {\small x}; + + \draw[very thick,color=brown,xstep=0.6cm,ystep=1cm,xshift=2.45cm,yshift=-0.35cm] + (0cm,-1pt) grid (3.0cm,1pt); + \draw[color=blue] (4.2,-0.6) node {\small x}; + } + \uncover<4-5>{ + \draw[color=blue] (1.5,-1.0) node {\tiny phi, phi\_p, phi\_p\_p}; + \draw[color=blue] (4.2,-1.0) node {\tiny phi, phi\_p, phi\_p\_p}; + }% + + % Step 5: Time + \uncover<5->{ + \draw[xstep=.6cm,ystep=.4cm,gray,dashed] + (0,0) grid (3.0cm,2.6cm); + \draw[xstep=.6cm,ystep=.4cm,gray,dashed,xshift=0.05cm,yshift=0.05cm] + (2.4,0) grid (5.4cm,2.6cm); + }% + \uncover<5>{ + \scope[color=red,thick,fill=white] + \draw (-0.5,0.4) -- (0.0,0.4); + \draw (-0.5,0.8) -- (0.0,0.8); + \draw[->] (-0.1,1.2) -- (-0.1,0.8); + \draw[<-] (-0.1,0.4) -- (-0.1,0.0); + \endscope + \draw (0,0.6) node[anchor=west,fill=white] {$\Delta t = \lambda\Delta x_{\min}$}; + } + + % Step 6: Initial data routines + \uncover<6->{ + \scope[very thick,color=green,xstep=0.6cm,ystep=1cm] + \draw[xshift=0cm,yshift=0cm] (0cm,-1pt) grid (3.0cm,1pt); + \draw[xshift=2.45cm,yshift=0.05cm] (0cm,-1pt) grid (3.0cm,1pt); + \draw[xshift=0cm,yshift=0.4cm] (0cm,-1pt) grid (3.0cm,1pt); + \draw[xshift=2.45cm,yshift=0.45cm] (0cm,-1pt) grid (3.0cm,1pt); + \draw[xshift=0cm,yshift=0.8cm,color=black] (0cm,-1pt) grid (3.0cm,1pt); + \draw[xshift=2.45cm,yshift=0.85cm,color=black] (0cm,-1pt) grid (3.0cm,1pt); + \endscope + }% + \uncover<6>{ + \scope[color=blue] + \draw (-0.5,0.0) node[anchor=east] {\small phi\_p}; + \draw (-0.5,0.4) node[anchor=east] {\small phi}; + \draw (-0.5,0.8) node[anchor=east] {\small phi\_p\_p}; + \endscope + } + + % Step 7: Layers rotation + \uncover<7>{ + %\draw[thick,color=red,->] (-0.5,-0.1) arc (-25:25:1.1cm); + \draw[thick,color=red,->] (-1.8, 0.8) arc (155:205:1.1cm); + } + \uncover<7-11>{ + \scope[color=blue] + \draw (-0.5,0.0) node[anchor=east] {\small phi\_p\_p}; + \draw (-0.5,0.4) node[anchor=east] {\small phi\_p}; + \draw (-0.5,0.8) node[anchor=east] {\small phi}; + \endscope + } + + % Step 8: Evaluation of RHS + \uncover<8>{ + \scope[draw=red,thick,fill=green] + \draw (0.0,0.4) -- (1.2,0.4); + \draw[->] (0.6,0.0) -- (0.6,0.7); + \filldraw (0.6,0.8) circle (0.1cm); + \filldraw (0.6,0.0) circle (0.1cm); + \filldraw (0.0,0.4) circle (0.1cm); + \filldraw (0.6,0.4) circle (0.1cm); + \filldraw (1.2,0.4) circle (0.1cm); + + % second processor: + \scope[xshift=0.05cm,yshift=0.05cm] + \fill (3.0,0.8) circle (0.05cm); + \fill (3.6,0.8) circle (0.05cm); + \scope[xshift=3.6cm] + \draw (0.0,0.4) -- (1.2,0.4); + \draw[->] (0.6,0.0) -- (0.6,0.7); + \filldraw (0.6,0.8) circle (0.1cm); + \filldraw (0.6,0.0) circle (0.1cm); + \filldraw (0.0,0.4) circle (0.1cm); + \filldraw (0.6,0.4) circle (0.1cm); + \filldraw (1.2,0.4) circle (0.1cm); + \endscope + \endscope + \endscope + }% + + % Step 9: Ghost zones + \uncover<9>{ + \scope[very thick,color=green,xstep=0.6cm,ystep=1cm] + \draw[xshift=0.6cm,yshift=0.8cm] (0cm,-1pt) grid (1.8cm,1pt); + \draw[xshift=3.05cm,yshift=0.85cm] (0cm,-1pt) grid (1.8cm,1pt); + \draw[->,color=red] (2.4,0.7) -- (2.4,0.9); + \draw[->,color=red] (3.05,0.9) -- (3.05,0.7); + \endscope + }% + + % Step 10: Boundary conditions + \uncover<10>{ + \scope[very thick,color=green,xstep=0.6cm,ystep=1cm] + \draw[xshift=0.6cm,yshift=0.8cm] (0cm,-1pt) grid (2.4cm,1pt); + \draw[xshift=2.45cm,yshift=0.85cm] (0cm,-1pt) grid (2.4cm,1pt); + \draw[->,color=red] (0.0,0.4) -- (0.0,0.8); + \draw[->,color=red] (5.45,0.45) -- (5.45,0.85); + \endscope + }% + + % Step 11: Output data + \uncover<11->{ + \scope[very thick,color=green,xstep=0.6cm,ystep=1cm] + \draw[xshift=0cm,yshift=0.8cm] (0cm,-1pt) grid (3.0cm,1pt); + \draw[xshift=2.45cm,yshift=0.85cm] (0cm,-1pt) grid (3.0cm,1pt); + \endscope + } + + % Step 11: Advance to the next time level + \uncover<12>{ + \scope[very thick,color=green,xstep=0.6cm,ystep=1cm] + \draw[xshift=0cm,yshift=1.2cm,color=black] (0cm,-1pt) grid (3.0cm,1pt); + \draw[xshift=2.45cm,yshift=1.25cm,color=black] (0cm,-1pt) grid (3.0cm,1pt); + \draw[xshift=0cm,yshift=0.8cm] (0cm,-1pt) grid (3.0cm,1pt); + \draw[xshift=2.45cm,yshift=0.85cm] (0cm,-1pt) grid (3.0cm,1pt); + \endscope + \scope[color=blue] + \draw (-0.5,0.4) node[anchor=east] {\small phi\_p}; + \draw (-0.5,0.8) node[anchor=east] {\small phi}; + \draw (-0.5,1.2) node[anchor=east] {\small phi\_p\_p}; + \endscope + } + + \end{tikzpicture} + \end{center} + \end{figure} + + + \column{.3\textwidth} + \begin{figure}[!htp] + \begin{center} + \vspace{-1cm} + \begin{tikzpicture} + \draw (0,7) node + [anchor=north,right,text width=3cm,rounded corners,fill=green!20,draw=blue!50!black] %,inner sep=1ex] + (begin) + {\begin{footnotesize} + \begin{itemize} + \item[] \hspace{-0.5cm} Grid structure + \item[] \hspace{-0.5cm} GF allocation + \end{itemize} + \end{footnotesize}}; + + \draw (0,5.3) node + [anchor=north,right,text width=3cm,rounded corners,fill=green!20,draw=blue!50!black] %,inner sep=1ex] + (init) + {\begin{footnotesize} + \begin{itemize} + \item[] \hspace{-0.5cm} Set up coords + \item[] \hspace{-0.5cm} Compute $\Delta t$ + \item[] \hspace{-0.5cm} Initial data + \end{itemize} + \end{footnotesize} }; + + \draw[->,thick,draw=blue!50!black] (0,2.15) -- (-0.3,2.15) -- (-0.3,3.8) -- (-0.05,3.8); + + \draw (0,3) node + [anchor=north,right,text width=3cm,rounded corners,fill=green!20,draw=blue!50!black] %,inner sep=1ex] + (evol) + {\begin{footnotesize} + \begin{itemize} + \item[]\hspace{-0.5cm} Rotate timelevels + \item[]\hspace{-0.5cm} Evolve GF, sync + \item[]\hspace{-0.5cm} Apply BCs + \item[]\hspace{-0.5cm} Output data + \end{itemize} + \end{footnotesize} }; + + \scope[color=blue!50!black,thick] + \draw[->,shorten >=2pt] (begin.south) -- (init.north); + \draw[->,shorten >=2pt] (init.south) -- (evol.north); + \endscope + \end{tikzpicture} + \end{center} + \end{figure} + \end{columns} +} + +%\frame[containsverbatim]{ \frametitle{WaveToy Thorn} +% Implemented in \verb|CactusWave/WaveToy|: +% \begin{itemize} +% \item \href{http://www.cct.lsu.edu/~bentivegna/WaveToy/interface.ccl}{interface.ccl} +% \item \href{http://www.cct.lsu.edu/~bentivegna/WaveToy/schedule.ccl}{schedule.ccl} +% \item \href{http://www.cct.lsu.edu/~bentivegna/WaveToy/param.ccl}{param.ccl} +% \item \href{http://www.cct.lsu.edu/~bentivegna/WaveToy/src}{src/ directory} +% \end{itemize} +%} + +\frame[containsverbatim]{ \frametitle{WaveToy Thorn} + Directory structure: + \begin{alltt} +WaveToy/ +|-- COPYRIGHT +|-- README +|-- configuration.ccl +|-- doc +| `-- documentation.tex +|-- interface.ccl +|-- schedule.ccl +|-- param.ccl +`-- src + |-- WaveToy.c + `-- make.code.defn +\end{alltt} +} + +\frame[containsverbatim]{ \frametitle{WaveToy Thorn} + Directory structure: + \begin{alltt} +WaveToy/ +|-- COPYRIGHT +|-- README +|-- configuration.ccl +|-- doc +| `-- documentation.tex +\textcolor{blue}{|-- interface.ccl +|-- schedule.ccl +|-- param.ccl} +`-- src + |-- WaveToy.c + `-- make.code.defn +\end{alltt} +} + +\frame[containsverbatim]{ \frametitle{WaveToy Thorn} + \begin{itemize} + \item \verb|interface.ccl|: + \tiny\begin{verbatim} + IMPLEMENTS: wavetoy_simple + INHERITS: grid + + PUBLIC: + + CCTK_REAL scalarevolve TYPE=gf TIMELEVELS=3 + { + phi + } "The evolved scalar field" + + CCTK_INT FUNCTION Boundary_SelectVarForBC( \ + CCTK_POINTER_TO_CONST IN GH, CCTK_INT IN faces, \ + CCTK_INT IN boundary_width, CCTK_INT IN table_handle, \ + CCTK_STRING IN var_name, CCTK_STRING IN bc_name) + + REQUIRES FUNCTION Boundary_SelectVarForBC\end{verbatim} + \end{itemize} +} +\frame[containsverbatim]{ \frametitle{WaveToy Thorn cont.} + \begin{itemize} + \item \verb|schedule.ccl|: + \tiny\begin{verbatim} + STORAGE: scalarevolve[3] + + SCHEDULE WaveToy_InitialData AT CCTK_INITIAL + { + LANG: C + } "Initial data for 3D wave equation" + + SCHEDULE WaveToy_Evolution AT CCTK_EVOL + { + LANG: C + SYNC: scalarevolve + } "Evolution of 3D wave equation" + + SCHEDULE WaveToy_Boundaries AT CCTK_EVOL AFTER WaveToy_Evolution + { + LANG: C + } "Select boundary conditions for the evolved scalar" + + SCHEDULE GROUP ApplyBCs as WaveToy_ApplyBCs AT CCTK_EVOL AFTER WaveToy_Boundaries + { + } "Apply boundary conditions"\end{verbatim} + \end{itemize} +} +\frame[containsverbatim]{ \frametitle{WaveToy Thorn cont.} + \begin{itemize} + \item \verb|param.ccl|: + \tiny\begin{verbatim} + CCTK_REAL amplitude "The amplitude of the waves" + { + *:* :: "Anything" + } 1.0 + + CCTK_REAL radius "The radius of the gaussian wave" + { + 0:* :: "Positive" + } 0.0 + + CCTK_REAL sigma "The sigma for the gaussian wave" + { + 0:* :: "Positive" + } 0.1\end{verbatim} + \end{itemize} +} + +\frame[containsverbatim]{ \frametitle{WaveToy Thorn cont.} + \begin{itemize} + \item Example parameter file: + \tiny\begin{verbatim} + Cactus::cctk_run_title = "Simple WaveToy" + + ActiveThorns = "time boundary Carpet CarpetLib CartGrid3D" + ActiveThorns = "CoordBase ioutil CarpetIOBasic CarpetIOASCII" + ActiveThorns = "CarpetIOHDF5 SymBase wavetoy" + + cactus::cctk_itlast = 10000 + time::dtfac = 0.5 + + IO::out_dir = $parfile + IOBasic::outInfo_every = 1 + IOASCII::out1D_every = 1 + IOASCII::out1D_vars = "wavetoy_simple::phi" + + iohdf5::out_every = 10 + iohdf5::out_vars = "grid::coordinates{out_every=10000000} wavetoy_simple::phi"\end{verbatim} + \end{itemize} +} +%\frame[containsverbatim]{ \frametitle{WaveToy Thorn} +% \begin{enumerate} +% \item Define a new variable in \verb|interface.ccl|, and allocate storage +% for it in \verb|schedule.ccl|. +% \item Schedule the energy calculation in the appropriate time bin, also in +% \verb|schedule.ccl|. +%\item Code up the energy calculation procedure in a file under the \verb|src/| +% subdirectory, and request its compilation in \verb|make.code.defn|. +% \end{enumerate} +%} + +%\frame[containsverbatim]{ \frametitle{WaveToy Thorn} +% Modified thorn: +% \begin{itemize} +% \item \href{http://www.cct.lsu.edu/~bentivegna/WaveToyEnergy/interface.ccl}{interface.ccl} +% \item \href{http://www.cct.lsu.edu/~bentivegna/WaveToyEnergy/schedule.ccl}{schedule.ccl} +% \item \href{http://www.cct.lsu.edu/~bentivegna/WaveToyEnergy/param.ccl}{param.ccl} +% \item \href{http://www.cct.lsu.edu/~bentivegna/WaveToyEnergy/src}{src/ directory} +% \end{itemize} +%} +% +%\frame[containsverbatim]{ \frametitle{WaveToy Thorn} +% Running this example: +% \begin{enumerate} +% \item Download the thornlist, optionlist and parameter file: +% +% \small{\url{www.cct.lsu.edu/~bentivegna/ICCS09Demo/wavetoy.th}} +% +% \small{\url{www.cct.lsu.edu/~bentivegna/ICCS09Demo/wavetoy.op}} +% +% \small{\url{www.cct.lsu.edu/~bentivegna/ICCS09Demo/wavetoy.par}} +% +% \item Configure and compile: +% +% \verb|cd $CACTUS_DIR| +% +% \verb|make wave-config options=wavetoy.op THORNLIST=wavetoy.th| +% +% \verb|make wave| +% \item Run: +% +% \verb|./exe/cactus_wave wavetoy.par| +% \end{enumerate} +%} +% +%\frame[containsverbatim]{ \frametitle{WaveToy Thorn} +% Visualize the results: +% \begin{itemize} +% \item ASCII output with gnuplot. +% \item HDF5 output with VisIt and visitCarpetHDF5. +% \includegraphics[height=3cm]{viz1.png} +% \quad +% \includegraphics[height=3cm]{viz3.png} +% \quad +% \includegraphics[height=3cm]{viz6.png} +% \end{itemize} +%} + +\end{document}

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[McLachlan]McLachlan branch, dgfe, updated. 0a8dfa064f2ffe7f6e9e1003beb3e8b959696da1
by Carpet git repositories 26 Mar '12

26 Mar '12

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "McLachlan". The branch, dgfe has been updated via 0a8dfa064f2ffe7f6e9e1003beb3e8b959696da1 (commit) from f94667b72311f23ab2b37a216052b15c3085c3b6 (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit 0a8dfa064f2ffe7f6e9e1003beb3e8b959696da1 Author: David Radice <david.radice(a)aei.mpg.de> Date: Sun Mar 25 16:54:32 2012 +0200 Add some Kranc-generated files needed to compile ML_FOZ4 ----------------------------------------------------------------------- Summary of changes: ML_FOZ4/src/Boundaries.cc | 69 +++++++++---------- ML_FOZ4/src/ML_FOZ4_InitSchwarzschildStuffing.cc | 2 +- .../src/ML_FOZ4_enforce.cc | 33 +++++---- 3 files changed, 52 insertions(+), 52 deletions(-) copy ML_WaveToy/src/WT_Gaussian.cc => ML_FOZ4/src/ML_FOZ4_enforce.cc (74%) hooks/post-receive -- McLachlan

1 0

[McLachlan]McLachlan branch, dgfe, updated. f94667b72311f23ab2b37a216052b15c3085c3b6
by Carpet git repositories 25 Mar '12

25 Mar '12

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "McLachlan". The branch, dgfe has been updated via f94667b72311f23ab2b37a216052b15c3085c3b6 (commit) via 307ac14e63f66eccf6da0e9ab930df36c5eb40f1 (commit) from d56943d5e3e90d4aa105a8c6e9dbdbff05220784 (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit f94667b72311f23ab2b37a216052b15c3085c3b6 Merge: 307ac14 d56943d Author: David Radice <david.radice(a)aei.mpg.de> Date: Sun Mar 25 16:28:26 2012 +0200 Merge branch 'dgfe' of carpetcode.org:McLachlan into dgfe commit 307ac14e63f66eccf6da0e9ab930df36c5eb40f1 Author: David Radice <david.radice(a)aei.mpg.de> Date: Fri Mar 16 12:31:35 2012 +0100 Use the new Filter schedule groups ----------------------------------------------------------------------- Summary of changes: ML_FOZ4_DG_P5_Helper/schedule.ccl | 2 +- m/prototype/ML_FOZ4_DG_Helper/schedule.ccl | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) hooks/post-receive -- McLachlan

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[McLachlan]McLachlan branch, dgfe, updated. d56943d5e3e90d4aa105a8c6e9dbdbff05220784
by Carpet git repositories 24 Mar '12

24 Mar '12

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "McLachlan". The branch, dgfe has been updated via d56943d5e3e90d4aa105a8c6e9dbdbff05220784 (commit) via 447cd6ced79a2c0ee29b31bb2c0178ead9182ecc (commit) via 765ca9ca4df84cd2701ed76c8b6534b3c7e8fe88 (commit) via 17f5f5b8788b5ed0b8636a6e99615764c3725eff (commit) from a86a88739cb094a9707b373355ddd783a7a2bd15 (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit d56943d5e3e90d4aa105a8c6e9dbdbff05220784 Merge: 447cd6c a86a887 Author: Daniela Alic <alda(a)aei.mpg.de> Date: Sun Mar 25 01:21:24 2012 +0100 Merge branch 'dgfe' of carpetcode.org:McLachlan into dgfe commit 447cd6ced79a2c0ee29b31bb2c0178ead9182ecc Author: Daniela Alic <alda(a)aei.mpg.de> Date: Sun Mar 25 01:15:01 2012 +0100 Defined new dissipation operators, for FDOC methods. commit 765ca9ca4df84cd2701ed76c8b6534b3c7e8fe88 Author: Daniela Alic <alda(a)aei.mpg.de> Date: Thu Mar 1 22:58:57 2012 +0100 changes to scalar field commit 17f5f5b8788b5ed0b8636a6e99615764c3725eff Author: Daniela Alic <alda(a)aei.mpg.de> Date: Mon Feb 20 21:19:03 2012 +0100 corrected scalar field matching ----------------------------------------------------------------------- Summary of changes: ML_FOZ4/configuration.ccl | 5 +- ML_FOZ4/interface.ccl | 9 +- ML_FOZ4/param.ccl | 32 +- ML_FOZ4/schedule.ccl | 14 + ML_FOZ4/src/Boundaries.cc | 69 +- ML_FOZ4/src/Differencing.h | 333 +++-- ML_FOZ4/src/ML_FOZ4_Dissipation.cc | 1971 +++++++++++++++----- ML_FOZ4/src/ML_FOZ4_InitG.cc | 230 ++-- ML_FOZ4/src/ML_FOZ4_InitRHS.cc | 294 ++-- ML_FOZ4/src/ML_FOZ4_InitSchwarzschildStuffing.cc | 135 +- ML_FOZ4/src/ML_FOZ4_Minkowski.cc | 294 ++-- ML_FOZ4/src/ML_FOZ4_RHS.cc | 1925 +++++++++++--------- ML_FOZ4/src/ML_FOZ4_RHSStaticBoundary.cc | 294 ++-- ML_FOZ4/src/ML_FOZ4_boundary.cc | 294 ++-- ML_FOZ4/src/ML_FOZ4_constraints.cc | 1393 ++++++++------ ML_FOZ4/src/ML_FOZ4_convertFromADMBase.cc | 174 +- ML_FOZ4/src/ML_FOZ4_convertFromADMBaseG.cc | 310 ++-- ML_FOZ4/src/ML_FOZ4_convertToADMBase.cc | 174 +- .../src/ML_FOZ4_convertToADMBaseDtLapseShift.cc | 274 ++-- ...ML_FOZ4_convertToADMBaseDtLapseShiftBoundary.cc | 274 ++-- .../ML_FOZ4_convertToADMBaseFakeDtLapseShift.cc | 274 ++-- ML_FOZ4/src/ML_FOZ4_fluxes.cc | 1024 +++++----- ML_FOZ4/src/RegisterSymmetries.cc | 15 + ML_FOZ4/src/make.code.defn | 2 +- ML_FOZ4_DG_P5/src/Boundaries.cc | 69 +- ML_FOZ4_Helper/param.ccl | 4 +- ML_FOZ4_Helper/schedule.ccl | 6 +- ML_FOZ4_Helper/src/NewRad.c | 53 +- ML_FOZ4_Helper/src/RegisterConstrained.c | 5 + ML_FOZ4_Helper/src/SetGroupTags.c | 14 +- m/McLachlan_FOZ4.m | 138 +- 31 files changed, 5887 insertions(+), 4215 deletions(-) hooks/post-receive -- McLachlan

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[McLachlan]McLachlan branch, cakernel, updated. e80cc5a1c818c9c22021f531739fe94832b10180
by Carpet git repositories 23 Mar '12

23 Mar '12

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "McLachlan". The branch, cakernel has been updated via e80cc5a1c818c9c22021f531739fe94832b10180 (commit) via 2ef88da6a9b031f46886a892b4ad5a4937ec0d56 (commit) via dd3f21acadc51787fd9d2e5ec2ec06c056ebe763 (commit) via fb54d790fbf8632b314829514cca434456f7ecaf (commit) via 98b83b48ce4ace1e1b3a763f797f44cbe7d9fb5d (commit) via dda038596b3254dde522e50cc7879440c2ea3ea7 (commit) from 41e6d23f052a54255821203cbfebc9d2d75965a8 (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit e80cc5a1c818c9c22021f531739fe94832b10180 Author: Ian Hinder <ian.hinder(a)aei.mpg.de> Date: Fri Mar 23 13:56:39 2012 +0100 Add 2-process test data Again, the CaKernel version was copied from the Host version. This test currently fails with CaKernel. commit 2ef88da6a9b031f46886a892b4ad5a4937ec0d56 Author: Ian Hinder <ian.hinder(a)aei.mpg.de> Date: Fri Mar 23 13:56:00 2012 +0100 Add 2-process tests commit dd3f21acadc51787fd9d2e5ec2ec06c056ebe763 Author: Ian Hinder <ian.hinder(a)aei.mpg.de> Date: Fri Mar 23 13:47:49 2012 +0100 Restrict new tests to running on 1 process commit fb54d790fbf8632b314829514cca434456f7ecaf Author: Ian Hinder <ian.hinder(a)aei.mpg.de> Date: Fri Mar 23 13:47:38 2012 +0100 Add test output data for ML_BSSN This was copied from the results of ML_BSSN_Host. commit 98b83b48ce4ace1e1b3a763f797f44cbe7d9fb5d Author: Ian Hinder <ian.hinder(a)aei.mpg.de> Date: Fri Mar 23 13:47:03 2012 +0100 Add test output data for ML_BSSN_Host commit dda038596b3254dde522e50cc7879440c2ea3ea7 Author: Ian Hinder <ian.hinder(a)aei.mpg.de> Date: Fri Mar 23 13:46:32 2012 +0100 Adapt sgw3d test suites for CaKernel branch ----------------------------------------------------------------------- Summary of changes: ML_BSSN_Test/test/ML_BSSN_Host_sgw3d.par | 139 ++++++++++++++++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/A.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/At11.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/At12.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/At13.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/At22.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/At23.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/At33.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/B1.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/B2.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/B3.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/Xt1.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/Xt2.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/Xt3.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/alpha.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/beta1.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/beta2.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/beta3.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/gt11.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/gt12.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/gt13.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/gt22.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/gt23.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/gt33.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/gxx.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/kxx.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/phi.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d/trK.x.asc | 46 +++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d_2proc.par | 139 ++++++++++++++++++++ ML_BSSN_Test/test/ML_BSSN_Host_sgw3d_2proc/A.x.asc | 88 ++++++++++++ .../test/ML_BSSN_Host_sgw3d_2proc/At11.x.asc | 88 ++++++++++++ .../test/ML_BSSN_Host_sgw3d_2proc/At12.x.asc | 88 ++++++++++++ .../test/ML_BSSN_Host_sgw3d_2proc/At13.x.asc | 88 ++++++++++++ .../test/ML_BSSN_Host_sgw3d_2proc/At22.x.asc | 88 ++++++++++++ .../test/ML_BSSN_Host_sgw3d_2proc/At23.x.asc | 88 ++++++++++++ .../test/ML_BSSN_Host_sgw3d_2proc/At33.x.asc | 88 ++++++++++++ .../test/ML_BSSN_Host_sgw3d_2proc/B1.x.asc | 88 ++++++++++++ .../test/ML_BSSN_Host_sgw3d_2proc/B2.x.asc | 88 ++++++++++++ .../test/ML_BSSN_Host_sgw3d_2proc/B3.x.asc | 88 ++++++++++++ .../test/ML_BSSN_Host_sgw3d_2proc/Xt1.x.asc | 88 ++++++++++++ .../test/ML_BSSN_Host_sgw3d_2proc/Xt2.x.asc | 88 ++++++++++++ .../test/ML_BSSN_Host_sgw3d_2proc/Xt3.x.asc | 88 ++++++++++++ .../test/ML_BSSN_Host_sgw3d_2proc/alpha.x.asc | 88 ++++++++++++ .../test/ML_BSSN_Host_sgw3d_2proc/beta1.x.asc | 88 ++++++++++++ .../test/ML_BSSN_Host_sgw3d_2proc/beta2.x.asc | 88 ++++++++++++ .../test/ML_BSSN_Host_sgw3d_2proc/beta3.x.asc | 88 ++++++++++++ .../test/ML_BSSN_Host_sgw3d_2proc/gt11.x.asc | 88 ++++++++++++ .../test/ML_BSSN_Host_sgw3d_2proc/gt12.x.asc | 88 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[svn:einsteintoolkit] Workshop_Spring_2012/ (Rev. 10)
by knarf＠cct.lsu.edu 22 Mar '12

22 Mar '12

User: knarf Date: 2012/03/22 03:18 PM Added: /pics/ fl_300.png Modified: / intro_HPC.tex Log: some slides to HPC intro Directory Changes: Directory: /svn:mime-type/ ========================== + application/octet-stream File Changes: Directory: / ============ File [modified]: intro_HPC.tex Delta lines: +105 -2 =================================================================== --- intro_HPC.tex 2012-03-22 18:59:17 UTC (rev 9) +++ intro_HPC.tex 2012-03-22 20:18:47 UTC (rev 10) @@ -2,10 +2,113 @@ \usepackage{ragged2e} \usecolortheme[RGB={200,200,200}]{structure} +\subtitle[Introduction to HPC]{{\large Einstein Toolkit Workshop}\\*[0.3em]Introduction to High-Performance-Computing} +\author[\mbox{\includegraphics[height=0.6em]{fl_300}\hspace{0.5em}Frank LÃ¶ffler}]{Dr Frank LÃ¶ffler} +\date{Apr 04 2012} + \begin{document} -\frame{\frametitle{High-Performane-Computing} -. +\frame{\titlepage} + +\frame{\frametitle{What is High-Performane-Computing (HPC)?} + \begin{itemize} + \item Whenever speed is important + \item Tools for HPC: Cyberinfrastructure + \begin{itemize} + \item A workstation, desktop, laptop, smartphone + \item A supercomputer + \item Grid / Cloud + \end{itemize} + \end{itemize} } +\frame{\frametitle{Why use Computers in Science?} + \begin{itemize} + \item Complex theories without (many) known analytical solutions; solutions + have to be found numerically + \item Impossible experiments; conditions cannot be met by lab experiment + \item Speed sometimes important, and usually computers can beat humans here + \end{itemize} +} + +\frame{\frametitle{Examples} + \begin{itemize} + \item Smimulation of physical phenomena + \begin{itemize} + \item Climate modeling + \item Galaxy formation + \item Supernovae explosions + \item Fluid flow through porous media + \end{itemize} + \item Data mining + \begin{itemize} + \item Gene sequenzing + \item Tornado detection + \item Satellite surveillance + \end{itemize} + \item Visualization + \begin{itemize} + \item Reducing large data sets to understandable pictures/movies + \end{itemize} + \end{itemize} +} + +\frame{\frametitle{Why should you care about HPC?} + \begin{itemize} + \item Your problem is big + \item Your problem is complex + \item You need an answer fast - usually within your PhD + \end{itemize} + However: + \begin{itemize} + \item Your computer is too small + \item Your computer is too slow + \item Your software is not efficient and/or not parallel + \end{itemize} +} + +\frame{\frametitle{But you are not a computer scientist} + \begin{itemize} + \item Don't worry: most people in HPC are not + \item Skills you need: + \begin{itemize} + \item Common sense + \item Patience and creativity + \item Common sense + \item Some interest in technology + \item Common sense + \item Ability to deal with some ``jargon'' + \item Common sense + \item Some basic programming (C/C++/Fortran) + \end{itemize} + \end{itemize} +} + +\frame{\frametitle{But I am just a computer scientist} + \begin{itemize} + \item Don't worry: since most people in HPC are not, you have an advantage from the start + \item Skills you need: + \begin{itemize} + \item Common sense + \item Patience and creativity + \item Common sense + \item Some interest in scientific problems + \item Common sense + \item Ability to deal with some ``jargon'' + \item Common sense + \item Programming in languages you might not like (C/C++/Fortran) + \end{itemize} + \end{itemize} +} + +\frame{\frametitle{HPC is pragmatic} + \begin{itemize} + \item Performance is not always what matters: Time to solution is + \item Practical experience is most important + \item Leveraging existing solutions is preferred over inventing new ones + \item A good solution today is often worth more than a better solution tomorrow + \item However: a readable and maintainable solution is better than a complicated one + \end{itemize} +} + \end{document} Directory: /pics/ ================= File [added]: fl_300.png Delta lines: +0 -0 =================================================================== (Binary files differ) Property changes on: pics/fl_300.png ___________________________________________________________________

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