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3984 discussions

No Einstein Toolkit Meeting
by Frank Loeffler 16 Jan '17

16 Jan '17

Hi, There will *not* be an Einstein Toolkit meeting today. The next meeting will be on Mon Jan 23th, 2017, at the usual time: 9:30am US central time). Frank Loeffler

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Linux Assemblers question
by David Bradley 11 Jan '17

11 Jan '17

I am interested if there is a known difference for using Gnu Assembler compared to Yasm for Linux in connection to the Toolkit. I am currently using Mint 18.1 and kernel 4.8.6 Yasm 1.3.0 Thank you for your time

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piraha everywhere
by Steven R. Brandt 10 Jan '17

10 Jan '17

Piraha everywhere has been pushed. --Steve

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McLachlan Shift Condition
by Gwyneth Allwright 31 Dec '16

31 Dec '16

Hi All, I'm new to the Einstein Toolkit and would like to double check what the ML_BSSN parameters ShiftGammaCoeff, BetaDriver and ShiftAlphaPower refer to. I tried looking in the param.ccl file, but it still wasn't 100% clear to me. As far as I understand, the shift condition used by McLachlan is the gamma driver, given here: http://grwiki.physics.ncsu.edu/wiki/Shift_Conditions. What value of eta does ML_BSSN use? Thanks, Gwyneth

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Happy Holidays
by Frank Loeffler 24 Dec '16

24 Dec '16

I believe I can speak on behalf of all of the Einstein Toolkit maintainers when I wish all of our users and developers some happy holidays, whatever they might be. Have a Merry Christmas and/or a Contented Feast of the Immaculate Conception or Happy Hanukkah or Joyous Kwanzaa or a Blissful Bodhi Day or a Good Winter Solstice (even if already a few days in the past) and/or a Joyful Canadian Boxing Day and a Festive Festivus, and a Happy New Year! Frank Löffler (This includes everyone in Japan, even if most of them just work - so I have been told.)

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problem on running bbh expample
by Cory Chu 23 Dec '16

23 Dec '16

Hi, I'm using Payne-Gaposchkin release to run the BBHLowRes.par example basically, follow this instruction https://arxiv.org/abs/1305.5299 <https://arxiv.org/abs/1305.5299> however, it seems that the simlution terminated too early. this is the plot of data in BH_diagnostics.ahX.gp i got i noticed that in the output of "sim list-sim" it says "Warning: job status is U" and this is the from .err file in output-0000 (partially) ================================================ ................................. WARNING level 1 from host kpc-VirtualBox process 0 while executing schedule bin CCTK_PARAMCHECK, routine ML_BSSN_Helper::ML_BSSN_ParamCheck in thorn ML_BSSN_Helper, file /home/kuangtly/programming/ET/forfun/Cactus/arrangements/McLachlan/ML_BSSN_Helper/src/Parameters.c:204: -> Parameter ML_BSSN::ShiftAdvectionCoeff is outdated; please update the parameter file. Instead of using this parameter, you should set ML_BSSN::advectShift. WARNING level 1 from host kpc-VirtualBox process 0 while executing schedule bin (none), routine (no thorn)::(no routine) in thorn CarpetRegrid2, file /home/kuangtly/programming/ET/forfun/Cactus/arrangements/Carpet/CarpetRegrid2/src/regrid.cc:389: -> Could not enforce grid structure properties in this round, starting another round WARNING level 0 from host kpc-VirtualBox process 0 while executing schedule bin BoundaryConditions, routine RotatingSymmetry180::Rot180_ApplyBC in thorn RotatingSymmetry180, file /home/kuangtly/programming/ET/forfun/Cactus/arrangements/CactusNumerical/RotatingSymmetry180/src/rotatingsymmetry180.c:447: -> TAT/Slab can only be used if there is a single local component per MPI process cactus_sim: /home/kuangtly/programming/ET/forfun/Cactus/arrangements/Carpet/Carpet/src/helpers.cc:275: int Carpet::Abort(const cGH*, int): Assertion `0' failed. Rank 0 with PID 15757 received signal 6 Writing backtrace to mybbh/backtrace.0.txt Aborted (core dumped) ===================================================== I can't figure out what's the problem, even where to get the error message correctly. I have try to change the initial data given by "two puncture", and it turns out that those BH can't move too far as above, although they really changed the trajectory. Environment: virtualBox 8G RAM assigned Ubuntu 16.04.1 Could anyone give me some hint~ Thanks a lot ! Cory

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Re: [Users] Installing on OSX10.12
by Guy Pitman 22 Dec '16

22 Dec '16

Further to my last email on this issue, Can anyone tell me what version of gcc we should be using for the install? I notice that the Mac Homebrew installation refers to gcc46 - but there seems to be a problem running that on a Mac (it seemed to install OK under home-brew but I get segmentation fault 11- doing gcc-46 —version) :googling this, clang (Apple's LLVM-based C compiler) is intended to be a compatible replacement for gcc? I also tried gcc49 but that gives a problem with linking. If I use the clang compiler, I get a problem with the unknown type name ‘CCTK_COMPLEX16’ etc. Regards, Guy > On 12 Dec. 2016, at 5:01 pm, Guy Pitman <Guy.pitman(a)bigpond.com> wrote: > > Hi, > > I am a new user trying to install the simplified demo on a Mac running OSX10.12 (Sierra) > > I followed the instructions on https://docs.einsteintoolkit.org/et-docs/Simplified_Tutorial_for_New_Users <https://docs.einsteintoolkit.org/et-docs/Simplified_Tutorial_for_New_Users> and followed the instructions, > > but when I run the command > > ./simfactory/bin/sim build --mdbkey make 'make -j4' --thornlist=manifest/einsteintoolkit.th <http://einsteintoolkit.th/> > > I at first get CST error 1: > -> Configuration script for thorn PTHREADS returned exit code 1 > Error message: 'Did not find PTHREADS’ > > I am not sure where to set the PTHREADS_DIR or what to set it to- I also tried editing einsteintoolkit.th <http://einsteintoolkit.th/> and disabling pthreads and Watchdog but then I get a error > > unknown type name > 'CCTK_REAL8' > > > Can anyone help? > > Many thanks > > Guy

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Jenkins release build
by Ian Hinder 21 Dec '16

21 Dec '16

Hi, The Jenkins build system is now configured to build the new release in its "EinsteinToolkitRelease" job. https://build-test.barrywardell.net/job/EinsteinToolkitReleased/ There are failures in 3 tests, which is the same as in trunk, and it has been like this for a while. -- Ian Hinder http://members.aei.mpg.de/ianhin

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SimFactory commits missed in the release
by Ian Hinder 20 Dec '16

20 Dec '16

Hi Roland, Were the commits * a02707c - (origin/master) fedora: add hdf5_hl to HDF5_LIB for PITTNullCode/SphericalHarmonicRecon (2016-12-12) <Roland Haas> * ce1ee9b - fedora: explicitly install python2 since python3 is the default in FC25 (2016-12-12) <Roland Haas> * 72518a0 - minerva: update cluster name (2016-12-12) <Roland Haas> supposed to be included in the release? They appear after the ET_2016_11_v0 tag and the ET_2016_11 branch in simfactory, but they were committed to trunk several days before the release, and before * arrangements/CactusUtils ac9dcc7...e366e36 (1): > Formaline: Avoid deadlock. Patch by Erik Schnetter in CactusUtils, which was included in the release. I am making the release super-repo branch, and this means that the release branch is not a simple descendent of any master commit, since the release does not correspond to a snapshot of all repositories at any given time. This isn't really a problem, but it looks a bit weird in the history. -- Ian Hinder http://members.aei.mpg.de/ianhin

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Running the sample neutron star simulation
by Maitraya Bhattacharyya 20 Dec '16

20 Dec '16

Dear friends, I followed the example given in the tutorial for new users on single machines. I typed: su -c './simfactory/bin/sim submit static_tov --parfile=par/static_tov_small.par --procs=1 --walltime=8:0:0 on CentOS 7. I receive the following error: Error: while attempting to read option dir, could not open /home/ldap_users/mkb14ip002/Documents/ET/Cactus/repos/simfactory2/etc/options for reading Aborting Simfactory. Please help as I am completely new to Einstein Toolkit. Thanks, Maitraya Bhattacharyya IISER Kolkata

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