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[svn:einsteintoolkit] Paper_EinsteinToolkit_2010/ (Rev. 217)
by ian.hinder＠aei.mpg.de 14 Nov '11

14 Nov '11

User: hinder Date: 2011/11/14 09:53 AM Modified: / ET.tex Log: Add SFB to acknowledgments File Changes: Directory: / ============ File [modified]: ET.tex Delta lines: +2 -1 =================================================================== --- ET.tex 2011-11-14 15:52:47 UTC (rev 216) +++ ET.tex 2011-11-14 15:53:56 UTC (rev 217) @@ -2938,7 +2938,8 @@ 0903973/0903782/0904015 (CIGR\@). Related grants contribute directly and indirectly to the success of CIGR, including NSF OCI-0721915, NSF OCI-0725070, NSF OCI-0832606, NSF OCI-0905046, NSF OCI-0941653, -NSF AST-0855535, NSF DMS-0820923, NASA 08-ATFP08-0093, and EC-FP7 PIRG05-GA-2009-249290. +NSF AST-0855535, NSF DMS-0820923, NASA 08-ATFP08-0093, EC-FP7 PIRG05-GA-2009-249290 and +DFG grant SFB/Transregio~7 ``Gravitational-Wave Astronomy''. Results presented in this article were obtained through computations on the Louisiana Optical Network Initiative under allocation loni\_cactus05 and loni\_numrel07, as well as on NSF XSEDE under allocations

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[svn:einsteintoolkit] Paper_EinsteinToolkit_2010/ (Rev. 216)
by knarf＠cct.lsu.edu 14 Nov '11

14 Nov '11

User: knarf Date: 2011/11/14 09:52 AM Modified: / ET.tex Log: add citation File Changes: Directory: / ============ File [modified]: ET.tex Delta lines: +1 -1 =================================================================== --- ET.tex 2011-11-14 15:43:11 UTC (rev 215) +++ ET.tex 2011-11-14 15:52:47 UTC (rev 216) @@ -2919,7 +2919,7 @@ Carpet} AMR infrastructure. As we have shown, good scaling is limited to only a few thousand processes for some of the most widely used simulation scenarios. Work is in progress to eliminate this -bottleneck. On the other hand, a production simulation is typically +bottleneck~\cite{Zebrowski:2011bl}. On the other hand, a production simulation is typically composed of a large number of components, and even analysis and I/O routines have to scale well to achieve overall good performance. This is a highly non-trivial problem, since most Einstein Toolkit physics

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[svn:einsteintoolkit] manifest/trunk/ (Rev. 130)
by knarf＠cct.lsu.edu 14 Nov '11

14 Nov '11

User: knarf Date: 2011/11/14 09:52 AM Modified: /trunk/ einsteintoolkit.bib Log: add paper, remove dead link File Changes: Directory: /trunk/ ================== File [modified]: einsteintoolkit.bib Delta lines: +9 -1 =================================================================== --- trunk/einsteintoolkit.bib 2011-11-11 21:04:54 UTC (rev 129) +++ trunk/einsteintoolkit.bib 2011-11-14 15:52:38 UTC (rev 130) @@ -719,7 +719,6 @@ Cactus}, journal = {Linux Clusters: The HPC Revolution}, year = 2001, - url = {http://www.cactuscode.org/Articles/Camarda01.doc}, } @Article{Campanelli:2005dd, @@ -2788,6 +2787,15 @@ ##Z ############################################################################ +@inproceedings{Zebrowski:2011bl, + author = {Ashley Zebrowski and Frank L{\"o}ffler and Erik Schnetter}, + title = {{T}he {BL}-{O}ctree: {A}n {E}fficient {D}ata {S}tructure for {D}iscretized {B}lock-{B}ased {A}daptive {M}esh {R}efinement}, + booktitle = {ParCo2011: Proceeings of the 2011 International Conference on Parallel Computing}, + year = {2011}, + location = {Ghent, Belgium}, + publisher = {ParCo Conferences}, +} + @article{Zink:2005rr, author = "Burkhard Zink and Nikolaos Stergioulas and Ian Hawke and Christian D. Ott and Erik Schnetter and Ewald

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[svn:einsteintoolkit] Paper_EinsteinToolkit_2010/ (Rev. 215)
by jfaber＠einsteintoolkit.org 14 Nov '11

14 Nov '11

User: jfaber Date: 2011/11/14 09:43 AM Modified: / ET.tex Log: Added three references for 1990's cactus development, 2 typo fixes I have the bibfile ready for an update, missing refs will come shortly File Changes: Directory: / ============ File [modified]: ET.tex Delta lines: +3 -3 =================================================================== --- ET.tex 2011-11-14 15:41:22 UTC (rev 214) +++ ET.tex 2011-11-14 15:43:11 UTC (rev 215) @@ -369,7 +369,7 @@ an open source, modular, portable programming environment for collaborative HPC computing primarily developed at Louisiana State University, which originated at the Albert Einstein Institute and also has roots -at the National Center for Supercomputing Applications. +at the National Center for Supercomputing Applications~(see, e.g.,~\cite{Anninos:1995am,Anninos:1996ai,Seidel:1999ey} for historical reviews). The {\tt Cactus} computational toolkit consists of general modules which provide parallel drivers, coordinates, boundary conditions, interpolators, reduction operators, and efficient I/O in different data @@ -2196,10 +2196,10 @@ \section{Examples} \todo{Update if necessary} -To demonstrate the properties of the code and its capabilities, we have used it to simulate common astrophysical configurations of interest. Given the community-oriented direction of the project, the parameter files required to launch these simulations and a host of others are included and documented in the code releases, along with the datafiles produced by a representative set of simulation parameters to allow for code validation and confirmation of correct code performance on new platforms and architetures. As part of the internal validation process, +To demonstrate the properties of the code and its capabilities, we have used it to simulate common astrophysical configurations of interest. Given the community-oriented direction of the project, the parameter files required to launch these simulations and a host of others are included and documented in the code releases, along with the datafiles produced by a representative set of simulation parameters to allow for code validation and confirmation of correct code performance on new platforms and architectures. As part of the internal validation process, nightly builds are checked against a set of benchmarks to ensure that consistent results are generated with the inclusion of all new commits to the code. -The performance of the Toolkit for vacuum configurations is demonstrated through evolutions of single, rotating BHs and the merger of binary black hole configurations (sections~\ref{sec:1bh-example} and \ref{sec:bbh-example}, respectively). Linear oscillations about equilibirum for an isolated NS are discussed in section~\ref{sec:tov_oscillations}, and the collapse of a NS to a BH, including dynamical formation of a horizon, in section~\ref{sec:collapse_example}. Finally, to show a less traditional application of the code, we show its ability to perform cosmological simulations by evolving a Kasner spacetime (see section~\ref{sec:cosmology}). +The performance of the Toolkit for vacuum configurations is demonstrated through evolutions of single, rotating BHs and the merger of binary black hole configurations (sections~\ref{sec:1bh-example} and \ref{sec:bbh-example}, respectively). Linear oscillations about equilibrium for an isolated NS are discussed in section~\ref{sec:tov_oscillations}, and the collapse of a NS to a BH, including dynamical formation of a horizon, in section~\ref{sec:collapse_example}. Finally, to show a less traditional application of the code, we show its ability to perform cosmological simulations by evolving a Kasner spacetime (see section~\ref{sec:cosmology}). \subsection{Spinning BH} \label{sec:1bh-example}

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[svn:einsteintoolkit] Paper_EinsteinToolkit_2010/ (Rev. 214)
by schnetter＠cct.lsu.edu 14 Nov '11

14 Nov '11

User: eschnett Date: 2011/11/14 09:41 AM Modified: / ET.tex Log: Acknowledgements File Changes: Directory: / ============ File [modified]: ET.tex Delta lines: +3 -2 =================================================================== --- ET.tex 2011-11-14 15:40:14 UTC (rev 213) +++ ET.tex 2011-11-14 15:41:22 UTC (rev 214) @@ -2932,8 +2932,9 @@ are expected to be running on 100,000 and more compute cores. \section*{Acknowledgments\pages{0.5 All}} -\todo{all, ADD} The Einstein Toolkit is directly supported by the -National Science Foundation under the grant numbers +\todo{All: Add!} +The Einstein Toolkit is directly supported by the +National Science Foundation in the USA under the grant numbers 0903973/0903782/0904015 (CIGR\@). Related grants contribute directly and indirectly to the success of CIGR, including NSF OCI-0721915, NSF OCI-0725070, NSF OCI-0832606, NSF OCI-0905046, NSF OCI-0941653,

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[svn:einsteintoolkit] Paper_EinsteinToolkit_2010/ (Rev. 213)
by schnetter＠cct.lsu.edu 14 Nov '11

14 Nov '11

User: eschnett Date: 2011/11/14 09:40 AM Modified: / ET.tex Log: Reword File Changes: Directory: / ============ File [modified]: ET.tex Delta lines: +6 -16 =================================================================== --- ET.tex 2011-11-14 15:37:03 UTC (rev 212) +++ ET.tex 2011-11-14 15:40:14 UTC (rev 213) @@ -72,6 +72,8 @@ % You can use a baselinestretch of down to 0.9 %\renewcommand{\baselinestretch}{0.96} +\hyphenation{Schwarz-schild} + \sloppypar \begin{document} @@ -2726,23 +2728,11 @@ the apparent horizon that eventually forms in the simulation. The apparent horizon is first found at approximately the time when the star's coordinate radius approaches its Schwarzschild radius, though -one ought to keep in mind that the Schwarzschild radius is a +one needs to keep in mind that the Schwarzschild radius is a circumferential radius, whereas the meaning of the coordinate radius -in our BSSN calculation is closer to a radius in isotropic gauge -\todo{Roland, do you agree?}. -\todo{RH: TOVSolver sets up isotropic coordinates initially, at the end of the -simulation though I have sizeable off-diagonal metric components (gxy is about -0.2 within 6M) and also a non-zero shift, the metric diagonal elements are also not -idenical. So the coordinate system is no longer obviously isotropic as far as I -can tell. On the other hand it is also not just Schwarzschild coordinates -transformed to Cartesian coordinates using the flat space expressions for r, -$\theta$ and $\phi$. So I -agree the the coordinates are likely not Schwarzschild coordinates but am not -sure that they are still isotropic since the direction towards the center is -special. So I'd add a weaker statement ``\ldots in our BSSN calculation is not -necessarily that of a circumferential radius''} - In Figure~\ref{fig:tov_collapse_H_convergence_at0}, we display the - convergence factor obtained from +in our BSSN calculation is likely somewhat different. +In Figure~\ref{fig:tov_collapse_H_convergence_at0}, we display the +convergence factor obtained from \begin{equation} \frac{H_{h_1}-H_{h_2}}{H_{h_2}-H_{h_3}} = \frac{h_1^Q-h_2^Q}{h_2^Q-h_3^Q}\,, \label{eq:convergence-factor-definition}

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[svn:einsteintoolkit] Paper_EinsteinToolkit_2010/ (Rev. 212)
by schnetter＠cct.lsu.edu 14 Nov '11

14 Nov '11

User: eschnett Date: 2011/11/14 09:37 AM Modified: / ET.tex Log: Remove todo File Changes: Directory: / ============ File [modified]: ET.tex Delta lines: +4 -1 =================================================================== --- ET.tex 2011-11-14 15:35:32 UTC (rev 211) +++ ET.tex 2011-11-14 15:37:03 UTC (rev 212) @@ -2548,7 +2548,10 @@ The examples in the previous subsections did not include the evolution of matter within a relativistic spacetime. One interesting test of a coupled matter-spacetime evolution is to measure the eigenfrequencies of a stable TOV -star~(see, e.g.,~\cite{Gourgoulhon:1991aa,Romero:1996aa,Shibata:1998sg,Font:2001ew,Shibata:2003iy}). \todo{Do we need more refs? Five is decent for an e.g.} These eigenfrequencies can be compared +star~(see, +e.g.,~\cite{Gourgoulhon:1991aa, Romero:1996aa, Shibata:1998sg, + Font:2001ew, Shibata:2003iy}). +These eigenfrequencies can be compared to values known from linear perturbation theory. We begin our simulations with a self-gravitating fluid

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[svn:einsteintoolkit] Paper_EinsteinToolkit_2010/ (Rev. 211)
by schnetter＠cct.lsu.edu 14 Nov '11

14 Nov '11

User: eschnett Date: 2011/11/14 09:35 AM Modified: / ET.tex Log: Describe roots of Cactus at NCSA File Changes: Directory: / ============ File [modified]: ET.tex Delta lines: +2 -4 =================================================================== --- ET.tex 2011-11-14 09:35:18 UTC (rev 210) +++ ET.tex 2011-11-14 15:35:32 UTC (rev 211) @@ -366,10 +366,8 @@ Framework~\cite{Cactuscode:web,Goodale:2002a,CactusUsersGuide:web} is an open source, modular, portable programming environment for collaborative HPC computing primarily developed at Louisiana State University, -and historically at the Albert Einstein Institute and the -National Center for Supercomputing Applications\todo{~RH: for the senior -people: is there a citable paper or somthing similar that docuemnts NCSA's -involvement in Cactus?}. +which originated at the Albert Einstein Institute and also has roots +at the National Center for Supercomputing Applications. The {\tt Cactus} computational toolkit consists of general modules which provide parallel drivers, coordinates, boundary conditions, interpolators, reduction operators, and efficient I/O in different data

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[svn:einsteintoolkit] Paper_EinsteinToolkit_2010/ (Rev. 210)
by eloisa.bentivegna＠aei.mpg.de 14 Nov '11

14 Nov '11

User: bentivegna Date: 2011/11/14 03:35 AM Modified: / ET.tex Log: Added a grant number. File Changes: Directory: / ============ File [modified]: ET.tex Delta lines: +2 -2 =================================================================== --- ET.tex 2011-11-14 08:40:19 UTC (rev 209) +++ ET.tex 2011-11-14 09:35:18 UTC (rev 210) @@ -2946,8 +2946,8 @@ 0903973/0903782/0904015 (CIGR\@). Related grants contribute directly and indirectly to the success of CIGR, including NSF OCI-0721915, NSF OCI-0725070, NSF OCI-0832606, NSF OCI-0905046, NSF OCI-0941653, -NSF AST-0855535, NSF DMS-0820923, and NASA 08-ATFP08-0093. Results -presented in this article were obtained through computations on the +NSF AST-0855535, NSF DMS-0820923, NASA 08-ATFP08-0093, and EC-FP7 PIRG05-GA-2009-249290. +Results presented in this article were obtained through computations on the Louisiana Optical Network Initiative under allocation loni\_cactus05 and loni\_numrel07, as well as on NSF XSEDE under allocations TG-MCA02N014, TG-PHY060027N, TG-PHY100033, at the National Energy

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[svn:einsteintoolkit] Paper_EinsteinToolkit_2010/ (Rev. 209)
by knarf＠cct.lsu.edu 14 Nov '11

14 Nov '11

User: knarf Date: 2011/11/14 02:40 AM Modified: / ET.tex Log: We need to discuss ackns File Changes: Directory: / ============ File [modified]: ET.tex Delta lines: +1 -1 =================================================================== --- ET.tex 2011-11-14 08:39:49 UTC (rev 208) +++ ET.tex 2011-11-14 08:40:19 UTC (rev 209) @@ -2941,7 +2941,7 @@ are expected to be running on 100,000 and more compute cores. \section*{Acknowledgments\pages{0.5 All}} -\todo{Frank, ADD} The Einstein Toolkit is directly supported by the +\todo{all, ADD} The Einstein Toolkit is directly supported by the National Science Foundation under the grant numbers 0903973/0903782/0904015 (CIGR\@). Related grants contribute directly and indirectly to the success of CIGR, including NSF OCI-0721915, NSF

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