Users September 2015

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13 participants
16 discussions

Re: [Users] [ET Trac] [Einstein Toolkit] #1326: running loopcontrol on strange number of threads fails
by Erik Schnetter 11 Apr '19

11 Apr '19

Do you have a backtrace? -erik On Sunday, March 22, 2015, Einstein Toolkit < trac-noreply(a)einsteintoolkit.org> wrote: > #1326: running loopcontrol on strange number of threads fails > ------------------------------------+--------------------------------------- > Reporter: rhaas | Owner: > Type: defect | Status: new > Priority: minor | Milestone: > Component: EinsteinToolkit thorn | Version: > Resolution: | Keywords: LoopControl > ------------------------------------+--------------------------------------- > > Comment (by rhaas): > > This still happens even with current (Sun Mar 22 18:46:21 CET 2015) trunk, > though failure looks a bit different now: > {{{ > actus_sim: > /data/rhaas/postdoc/gr/ET_trunk/configs/sim/build/LoopControl/loopcontrol.cc:312: > T {anonymous}::divexact(T, T) [with T = int]: Assertion `i % j == 0' > failed > }}} > > -- > Ticket URL: <https://trac.einsteintoolkit.org/ticket/1326#comment:1> > Einstein Toolkit <http://einsteintoolkit.org> > The Einstein Toolkit > _______________________________________________ > Trac mailing list > Trac(a)einsteintoolkit.org > http://lists.einsteintoolkit.org/mailman/listinfo/trac > -- Erik Schnetter <schnetter(a)cct.lsu.edu> http://www.perimeterinstitute.ca/personal/eschnetter/

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meeting minutes for 2015-08-31
by Roland Haas 11 Apr '16

11 Apr '16

Present: Frank, Roland, Steve, Peter, Matt, Josh, Erik, Zach, Jonah, Elo There will be no ET call next week due to labour day/Thanksgiving weekend in North America. IllnoisGRMHD: * report is with Zach, was send via private email * separate repo is fine, Zach will create a repository * volunteer needed for the compatibility thorn * Zach will move compatibility thorns into same repo as IllinoisGRMHD GetComponents on OSX: * no OSX user has written * Roland will propose a patch simfactory on BeeGFS: * Erik will look into Bruno's proposed patch writing timeseries data into hdf5: * Frank would like to use this for things like the Hamiltonian norm * HDF5 supports extensible datasets, an example on how to use this is the HDF5 output of Multipole SPH in Cactus: * Matt has a more or less working version of SPH on grid background * came out of work at a national lab on generic grid methods * currently linked in a shared objects for mesh handling and nearest neighbour finding * currently writing his thesis, so code is not changing much right now * load balancing through bisection initially then times the RHS and neighbour looked up push particles around * no octree, instead a hierarchical hash * particle to grid data currently uses SPH approximation for Tmunu at gridpoints of Cactus grid * will arrange for time for presentation through mailing list 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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Cactus Course
by Garrison, David 22 Sep '15

22 Sep '15

Hello, I am in the early stages of developing a 1 credit hour course on using Cactus for Computational Physics. Does anyone have any recommendations of material? Has anyone here taught such a class? -DG -- David Garrison, Ph.D. Director of Graduate Programs for the School of Science and Computer Engineering, Associate Professor and Former Chair of Physics University of Houston-Clear Lake Bayou 3531 Houston, TX 77058 Tel: 281-283-3796 Fax: 281-283-3709 http://sce.uhcl.edu/garrison For more information about the UHCL Physics Program go to http://www.uhcl.edu/physics or sign up for UHCL newsletters at https://ecommunications.houston.edu/uhcl/join.html "If we knew what it was we were doing, it would not be called research, would it?" — Albert Einstein.

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Einstein Toolkit Meeting Reminder
by Frank Loeffler 22 Sep '15

22 Sep '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 and the conference id is 118682#. Frank Loeffler

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Advice needed
by Comer Duncan 21 Sep '15

21 Sep '15

Hi Eloisa, I have been experimenting with changes to the par file for the CT_BrillAnalytic code but have yet to get a successful run. I get complaints about Two_Punctures even though there is never a use of that in the par file or in the code. I am at a loss to see what is going on and ask you to please take a look. I am attaching the err file, the out file, and the par file. Somehow because of the par file (maybe) some data seems to be incorrectly referenced. Right? It's not clear to me what is wrong with the par file. Also, what about the Robin boundary condition? The only place that it is mentioned is in the par file (per your suggestion some time ago). Have I set the bc in the par file correctly? It would be cool if you can make the CT_Brillwave thorn and make a version of cactus with that thorn attached and see if you get the same problem I am seeing. Can you please let me know what you think? Comer

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scheduling and SCALAR variable
by Vassilios Mewes 19 Sep '15

19 Sep '15

Hello all, a quick question about scheduling: I have a scalar variable, which contains the elements of a rotation matrix that rotates the z-axis into a given vector... I want to calculate some quantities (that are grid functions) in coordinates that have been rotated by this matrix... I run into the following problem: when scheduling the calculation of the quantities in local mode, the function doesn't seem to have access to the rotation matrix elements... when scheduling the calculation in global, loop-local mode, I can't output the data at the grid points (the output gives 1.96808407167164e+243 at each point for every refinement level apart from the innermost, where the values are output correctly) I guess I could make the rotation matrix elements a grid function, but that seems to be a bit of an overkill with regard to the memory needed for the 9 CCTK_REALs i need to store the matrix as a SCALAR.. Any ideas on how to do this? best wishes, Vassili

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Prologation=NaN
by Steven R. Brandt 18 Sep '15

18 Sep '15

I'm interested in a version of Prolongation=None which results in poisoning of the boundary region during the prolongation step. Does such a thing exist? Cheers, Steve

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Test case notes
by Ian Hinder 14 Sep '15

14 Sep '15

Hi, I have just read the notes at https://docs.einsteintoolkit.org/et-docs/adding_a_test_case and wanted to make a comment. It says there that the test cases should run in < 2 minutes. We currently have 400 tests, so if all tests took 2 minutes, the tests would take 13 hours to run. They currently run in 30 minutes, and many tests take less than a second. I would modify the guidelines to say "Tests should run as quickly as possible; ideally in less than one second. Longer tests are OK if this is absolutely necessary to test for regressions." You can see an overview of the test run times at https://build.barrywardell.net/job/EinsteinToolkit/lastCompletedBuild/testR… You can click on "Duration" to sort by duration. Note that this is listed by thorn; you can click on an individual thorn to break the times down into individual tests. I don't know how to find the longest running tests across all thorns. PS: I don't know who wrote that wiki page as they didn't log in to the wiki, so only an IP address is recorded. Please use your wiki accounts if you have one! -- Ian Hinder http://members.aei.mpg.de/ianhin

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Download -> http: vs https: curl problem
by David Bradley 12 Sep '15

12 Sep '15

I tried to download both release and dev trees and had the following Unable to process LSUThorns/Vectors Unable to process LSUThorns/PeriodicCarpet Unable to process LSUThorns/SummationByParts Unable to process LSUThorns/QuasiLocalMeasures Summary of Warnings: Could not checkout module LSUThorns/Vectors svn: E175011: Unable to connect to a repository at URL 'http://svn.cct.lsu.edu/repos/numrel/LSUThorns/Vectors/branches/ET_2015_05' svn: E175011: Repository moved temporarily to 'https://svn.cct.lsu.edu/repos/numrel/LSUThorns/Vectors/branches/ET_2015_05'; please relocate Could not checkout module LSUThorns/PeriodicCarpet svn: E175011: Unable to connect to a repository at URL 'http://svn.cct.lsu.edu/repos/numrel/LSUThorns/PeriodicCarpet/branches/ET_20…' svn: E175011: Repository moved temporarily to 'https://svn.cct.lsu.edu/repos/numrel/LSUThorns/PeriodicCarpet/branches/ET_2…'; please relocate Could not checkout module LSUThorns/SummationByParts svn: E175011: Unable to connect to a repository at URL 'http://svn.cct.lsu.edu/repos/numrel/LSUThorns/SummationByParts/branches/ET_…' svn: E175011: Repository moved temporarily to 'https://svn.cct.lsu.edu/repos/numrel/LSUThorns/SummationByParts/branches/ET…'; please relocate Could not checkout module LSUThorns/QuasiLocalMeasures svn: E175011: Unable to connect to a repository at URL 'http://svn.cct.lsu.edu/repos/numrel/LSUThorns/QuasiLocalMeasures/branches/E…' svn: E175011: Repository moved temporarily to 'https://svn.cct.lsu.edu/repos/numrel/LSUThorns/QuasiLocalMeasures/branches/…'; please relocate

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Einstein Toolkit Meeting Reminder
by Frank Loeffler 11 Sep '15

11 Sep '15

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Users September 2015