Users September 2012

users@lists.einsteintoolkit.org

11 participants
25 discussions

Einstein Toolkit Meeting Reminder
by Frank Loeffler 14 May '15

14 May '15

Hi Please consider joining the weekly Einstein Toolkit phone call at 10 am US central time on Mondays. As usual, you can find instructions how to join on the following web site: http://einsteintoolkit.org/community/support/ I short: the number is (+1) 225-578-4942 or (+1) 866-573-0359 and the conference id is 118682#. My agenda contains: - Fall workshop - PLEASE let us know if you come [1]! - Hotel booking - Release planning - release date: Mon Oct 24 2011 - freeze date: Mon Sep 26 - the day of the call! - branch name: ET_2011_10 - List of release-concerning bugs [2] - ET paper: proposed "freeze" by Oct 3rd (Mon after this call) As always: feel free to add to this list. Frank Loeffler [1] https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Fall_2011#Fall_Einstei… [2] https://trac.einsteintoolkit.org/query?status=!closed&milestone=ET_2011_11&…

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EinsteinExact module
by David Andres Norena 03 Oct '12

03 Oct '12

Hello, I'm a physics graduate student at the University of Antioquia, Colombia. Currently. I'm trying to implement the Eistein Toolkit here in my Institute. Unfortunately, GetComponents fails obtaining the EinsteinExact Module arguing that there is no server access. What can be done in this situation? Any help you can give me would be highly appreciated. Cheers, David Noreña. Grupo de Física y Astrofísica Computacional, FACom. Instituto de Física. Universidad de Antioquia.

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build errors related to util_Table.h and selfwritten thorns
by Vassilios Mewes 01 Oct '12

01 Oct '12

Hello, i have a problem building the Einstein toolkit (release 2012_05, but the same happened in the 2011_10 version as well).. when i include my own thorns in the .th file to build a configuration, and change the schedule files of the thorns, the file util_Table.h in /configs/config_name/bindings/include is overwritten and being blank, thus leading to compile errors of the type: build/Boundary/Boundary.c(226): error: identifier "UTIL_TABLE_FLAGS_CASE_INSENSITIVE" is undefined physbc_table_handle = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE) now, this is annoying, but on my iMac i can then at least use the GUI of the finder to manually copy the file from Cactus/src/include and the compilation proceeds normally..when i however use the command line to copy the file, the compilation starts all over again and recompiles all files... so on the local cluster i am installing the toolkit on, i have to recompile the entire toolkit everytime i change my thorns, which a huge pain.. i am using the einsteintoolkit.th thornlist that came with the source code and just added the lines with my thorns in the end, is that the correct way to do it? this has been bugging my for quite a while now, but as the copying via finder semi-solved the problem, i haven't issued a ticket so far..but on the cluster this is not doable.. best wishes, Vassili

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Simulation domain volume and reduction weight sum differ
by Jakob Hansen 25 Sep '12

25 Sep '12

Hi, Using mercurial, I get this warning during simulations : INFO (CarpetReduce): Simulation domain volume: 170368000 INFO (CarpetReduce): Reduction weight sum: 170367999.880642 WARNING level 1 in thorn CarpetReduce processor 0 host tachyon2974 (line 120 of /home01/r632kgw/jakob/CactusP/arrangements/Carpet/CarpetReduce/src/mask_test.c): -> Simulation domain volume and reduction weight sum differ Simulations seem to run okay though. What is causing this warning and is it serious or can I just ignore it? Cheers, Jakob

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ET mailing lists
by Roland Haas 24 Sep '12

24 Sep '12

Hello all, in one of the recent ET phone calls it was decided to more prominently advertise the trac mailing list (since it is convenient and a large part of development discussion happens there/in the ticket comments). The ET support page http://einsteintoolkit.org/community/support/ lists the available email list, in particular the one for trac http://lists.einsteintoolkit.org/mailman/listinfo/trac where updates on trac tickets are made available. Yours, Roland -- My email is as private as my paper mail. I therefore support encrypting and signing email messages. Get my PGP key from http://keys.gnupg.net.

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meeting minutes
by Roland Haas 24 Sep '12

24 Sep '12

Present were: Roland, Seth, Eloisa, Bruno, Peter, Tanja, Philipp, Josh ET workshop: * if you plan to attend, please send an email to Burno at bcmsma(a)astro.rit.edu to get a head count Efficient Fortran arguments using Cray pointers: * verify that all compilers offer them (eg. IBM which preliminary research shows do) * consider leaving old method in as a fallback if Cray pointers are not supported * if we want to include them in the next release, add implementation of them right now rather than waiting until shortly before the release Yours, Roland

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Einstein Toolkit Meeting
by Roland Haas 23 Sep '12

23 Sep '12

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support_old_CalcTmunu_mechanism
by Frank Loeffler 23 Sep '12

23 Sep '12

Hi, Are there objections to change the default of TmunuBase::support_old_CalcTmunu_mechanism from "yes" to "no"? Frank

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meeting minutes
by Roland Haas 22 Sep '12

22 Sep '12

Present were: Roland, Frank, Ian, Seth, Eloisa, Bruno, Erik, Peter, Tanja, Philipp ET goals/issues: * tickets/trac: - we seem to have a relatively large number of quite old tickets - seem to be doing ok in closing and fixing most current tickets - advertise existence of trac mailing list to mailing list. It is currently mentioned on http://einsteintoolkit.org/community/support/ but not in a very prominent place * there is a suggestion of moving away from using CCT accounts for trac/svn etc and instead generate independent ET accounts for this so as to not share a single password for shell accounts and less-critical accounts. It would also simplify creating trac-only accounts for users. Not conclusion was reached. * we want to keep the regular ET call at a once a week frequency, otherwise the danger is that participants might forget * using git repositories instead of svn - want to support mixed sets of repositories - general desire to support git through ET. No decision of whether we want to host these repositories ourself or use an external hoster. - most likely candidate to switch: GRHydro - if/when switching, provide tutorial or link to tutorial for new git users - expect no (or low) impact or read-only users that get a checkout via GetComponents - a desire to be able to use git-svn in GetComponents was voiced but not further discussed. Note that a ticket exists for this https://trac.einsteintoolkit.org/ticket/762 * we would like to expand the existing gallery of pictures https://secure.flickr.com/photos/48081610@N03 * movies would be very welcome * we would like to provide installation instructions for ET on "common" OSs: some variant of Linux (Ubuntu, Debian, RedHat?) and MacOSX detailing the packages to install and simfactory option files to use. Preferably starting from a "default" install of the OS. Some initial work is on https://docs.einsteintoolkit.org/et-docs/Simplified_Tutorial_for_New_Users * want to add gfortran to default simfactory options file (generic.cfg) * want Cactus build system to probe for gfortran since it is almost always present and needed for basic thorns, eg. Carpet. Cactus itself should not require gfortran though * Frank will not be able to host next weeks call, so Roland will do so Yours, Roland

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EinsteinToolkit on the Janus supercomputer
by Bruno Giacomazzo 20 Sep '12

20 Sep '12

Hi, I have installed the EinsteinToolkit (Lovelace) on the Janus supercomputer here at the University of Colorado Boulder (https://www.rc.colorado.edu/resources/janus). Most of the testsuites pass (see also summary.log attached). The ones that give more problems are those from QuasiLocalMeasures which all fail because of segfault and I will try to understand why. I'd like to know if there is a "standard" benchmark parameter file that I can use to test the performance of GRHydro on Janus. Ideally it would be something simple (e.g., a TOV, so that I could use a very similar parfile to compare also GRHydro vs Whisky) and that you have used on other machines. I'm in particular interested in testing its weak scaling and possibly also its strong scaling. Thanks, Bruno Dr. Bruno Giacomazzo JILA - University of Colorado 440 UCB Boulder, CO 80309 USA Tel. : +1 303-492-5170 Fax : +1 303-492-5235 email : bruno.giacomazzo(a)jila.colorado.edu web: http://www.brunogiacomazzo.org ---------------------------------------------------------------------- There are only 10 types of people in the world: Those who understand binary, and those who don't ----------------------------------------------------------------------

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Users September 2012