Users July 2017

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17 participants
28 discussions

CCTK_Reduce sum reduction
by Jens Mahlmann 19 Jul '17

19 Jul '17

Dear all, I am currently encountering some strange behavior when using the CCTK_Reduce "sum" reduction. I observe that CCTK_Reduce would return a global "sum" (=0.06) which is between the global "minimum" (=0.0) and the global "maximum" (=6.6). In the global mode I am calling CCTK_Reduce(cctkGH, -1, CCTK_ReductionHandle("sum"), 1, CCTK_VARIABLE_REAL, target_var, 1, CCTK_VarIndex("Thorn::source_var")) Maybe somebody has an instant idea what I should look for to fix this to have the desired summation? Especially, I would be interested in summing up the values only on the finest refinement level. Is there a standard, best-practice way to do so? Thank you very much and my best Jens

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Einstein Toolkit Meeting Reminder
by Frank Loeffler 17 Jul '17

17 Jul '17

Hi Please consider joining the weekly Einstein Toolkit phone call at 9:30 am US central time on Mondays. Tomorrow's Hangout link will be posted as usual on this list about 15 minutes before the meeting and will be also posted on https://docs.einsteintoolkit.org/et-docs/Main_Page Central point tomorrow will be the release, expected to be announced tomorrow - as always barring newly developing problems. This will also be the last meeting hosted by myself. Future meetings will be hosted by Steven Brandt from LSU. Frank Löffler

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New Einstein Toolkit Release (Margherita Hack)
by Frank Loeffler 17 Jul '17

17 Jul '17

We are pleased to announce the fifteenth release (code name "Hack") of the Einstein Toolkit, an open, community developed software infrastructure for relativistic astrophysics. The highlights of this release are: * The new Piraha parser now parses all CCL and parameter files. The only user-visible change should be improved error messages. * A much more general, piece-wise EoS for EOS_Omni and the corresponding improvements for neutron star initial data using the Lorene library In addition, bug fixes accumulated since the previous release in December 2016 have been included. The Einstein Toolkit is a collection of software components and tools for simulating and analyzing general relativistic astrophysical systems that builds on numerous software efforts in the numerical relativity community including CactusEinstein, the Carpet AMR infrastructure and the relativistic magneto-hydrodynamics code GRHydro. For parts of the toolkit, the Cactus Framework is used as the underlying computational infrastructure providing large-scale parallelization, general computational components, and a model for collaborative, portable code development. The toolkit includes modules to build complete codes for simulating black hole spacetimes as well as systems governed by relativistic magneto-hydrodynamics. The Einstein Toolkit uses a distributed software model and its different modules are developed, distributed, and supported either by the core team of Einstein Toolkit Maintainers, or by individual groups. Where modules are provided by external groups, the Einstein Toolkit Maintainers provide quality control for modules for inclusion in the toolkit and help coordinate support. The Einstein Toolkit Maintainers currently involve postdocs and faculty from six different institutions, and host weekly meetings that are open for anyone to join in. Guiding principles for the design and implementation of the toolkit include: open, community-driven software development; well thought out and stable interfaces; separation of physics software from computational science infrastructure; provision of complete working production code; training and education for a new generation of researchers. For more information about using or contributing to the Einstein Toolkit, or to join the Einstein Toolkit Consortium, please visit our web pages at http://einsteintoolkit.org. The Einstein Toolkit is primarily supported by NSF 1550551/1550461/1550436/1550514 (Einstein Toolkit Community Integration and Data Exploration). The Einstein Toolkit contains about 200 regression test cases. On a large portion of the tested machines, almost all of these test suites pass, using both MPI and OpenMP parallelization. <The changes between this and the previous release include: === Larger changes since last release === * Cactus Flesh - Add macros CCTK_VINFO, CCTK_VERROR, CCTK_VWARN - The flesh now provides capability CACTUS with the respective Cactus version string for thorns to possibly depend upon. - In verbose build mode, Cactus now outputs time stamps. - Fix building Cactus using new versions of Perl. - Piraha now parses all CCL files by default. The old parser is still present, but disabled by default. This includes new (more descriptive) error messages. * MoL - Support integrating grid scalars, and grid arrays with RK operators * Simfactory - Updates to several machines (too many to list) * CarpetIOHDF5 - add option to have one output file per process * GetComponents - Process git repositories in parallel (when requested) * EOSOmni - Support piece-wise polytropic EoS with up to 10 pieces * NewRad - Support for Llama outer boundary * Meudon_Bin_NS - Now uses EOS_Omni, and with that is able to use more EoSs - Bugfix: earlier versions set a wrong atmosphere for EoS-Gamma!=2. However, depending on evolution settings those might have been overwritten with the (correct) values later. - Generate binaries necessary to not only read, but also generate Lorene binary neutron star initial data - Make this thorn work with older and current Lorene libraries (e.g., both Lorene thorns) * ML_ADMConstraints - Workaround for otherwise wrong results when using the Intel compiler version 15 and up. * PITTNullCode - Bugfix for calculating J. === New thorns or tools === * LORENE2 - A current version of Lorene was packaged as LORENE2. Initial data files are not comparible with those of the older LORENE thorn, and the API for codes using LORENE also changed. Due to this, only one of these thorns can be compiled into a Cactus executable, which for this release is still the older thorn LORENE. === Upcoming changes for the next releases === The Tmunu parameter "support_old_CalcTmunu_mechanism" will be removed after this release. If you rely on this, your code is probably unnecessarily slow. Let us know if the removal would create a problem for you. Most of the Fortran code in GRHydro was already replaced by more modern, and much easier to maintain C++ code. Up to now, both versions are compiled, and can be chosen at start-time. For a few releases the C++ versions are the default. After this release, the Fortran versions will be removed. Let us know if the removal would create a problem for you. === How to upgrade from Payne-Gaposchkin (ET_2016_11) === To upgrade from the previous release, use GetComponents with the new thornlist to check out the new version. See the Download page (http://einsteintoolkit.org/download/) on the Einstein Toolkit website for download instructions. === Machine notes === Supported (tested) machines include: - Default Debian, Ubuntu, Fedora, CentOS, and MacOS installations - Bethe - Bluewaters - Comet (#) - Cori - Draco - Edison - Galileo - Gulob - Hydra - Marconi - Minerva - Queenbee 2 - Supermike II - Wheeler - Zwicky - TACC machines: defs.local.ini needs to have sourcebasedir = $WORK and basedir = $SCRATCH/simulations configured for this machine. You need to determine $WORK and $SCRATCH by logging in to the machine. A new configuration for KNL nodes is being worked on, but not yet included in the release (but compilation works and tests mostly pass). -(#) On Comet, using more than one MPI process might produce corrupt output files. This is a known file system bug on this machine. All repositories participating in this release carry a branch ET_2017_06 marking this release. These release branches will be updated if severe errors are found. The "Hack" Release Team on behalf of the Einstein Toolkit Consortium (2017-07-17) Eloisa Bentivegna Steven R. Brandt Peter Diener Roland Haas Ian Hinder Frank Löffler Roberto De Pietri Erik Schnetter Yosef Zlochower July 17th, 2017

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release notes development
by Frank Loeffler 14 Jul '17

14 Jul '17

Hi This is intended for the developers, but everyone is (or course) welcome to take a look as well - just understand that this is NOT a release and STILL IN DEVELOPMENT. The STILL IN DEVELOPMENT release notes for the upcoming release can be found here: http://einsteintoolkit.org/about/releases/ET_2017_06_announcement.html Please correct/change/add to them BEFORE the call on Monday. If nothing comes crashing upon us we will release on Monday. If you like, get a cake and some candles, get a reverse list of numbers ready for a count down and celebrate. Don't forget a dragon - or a lighter if you aren't Steve. Frank

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North American Einstein Toolkit School and Workshop at NCSA
by Roland Haas 13 Jul '17

13 Jul '17

Hello all, the North American Einstein Toolkit School and Workshop will be hosted this year that NCSA, at the University of Illinois at Urbana-Champaign from July 31 to August 4 2017 (http://www.ncsa.illinois.edu/Conferences/ETK17/). The Einstein Toolkit is a publicly available framework used by several numerical relativity groups in the world, with applications ranging from high-energy astrophysics to cosmology. This meeting is open to anyone interested in numerical relativity and computational astrophysics and cosmology and in particular to Einstein toolkit users. There will be a 3 day school from July 31 to August 2, 2017 that will introduce students and postdocs to the Einstein Toolkit and numerical methods related to it. After that, on August 3 to August 4, 2017, the Einstein Toolkit workshop will cover the most recent developments of the toolkit, offer the possibility for collaboration and discussions about future plans. Individual registrations for each of the school and workshop are now open on http://www.ncsa.illinois.edu/Conferences/ETK17. There, you will also find information on available hotels, hotel sharing and a tentative program. Information on financial support is available on the registration page. The initial deadline for applying for support is June 1, 2017. Separate registration is required for each of the school and the workshop. When registering for the school you have the option of listing topics of interest for the school and your level of expertise. For the workshop you can suggest discussion topics as well as register a title and abstract for a 5 minute presentation you would like to give. The Einstein Toolkit community in Europe will host a two day meeting in Palma de Mallorca, Spain October 11-13. For further information please do not hesitate to contact the organizers at etk2017(a)ncsa.illinois.edu. Yours, Roland Haas, for the organizers

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SphericalHarmonicRecon and SphericalHarmonicReconGen
by Ian Hinder 13 Jul '17

13 Jul '17

Hi, We are down to three failing tests in Jenkins: SphericalHarmonicRecon.regression_test/2procs SphericalHarmonicReconGen.SpEC-dat-test/2procs SphericalHarmonicReconGen.SpEC-h5-test/2procs These tests all pass on one process but fail on two processes in Jenkins, which uses the ubuntu.cfg optionlist. They all seem to pass on multiple processes on all other machines (http://einsteintoolkit.org/testsuite_results/index.php), including my laptop with gcc. The first, SphericalHarmonicRecon.regression_test, fails like this: WARNING level 0 from host 7ce14e5707a0 process 0 while executing schedule bin NullEvol_Initial, routine NullEvolve::NullEvol_InitialSlice in thorn NullEvolve, file NullEvol_InitialSlice.F90:42: -> Error The second, SphericalHarmonicReconGen.SpEC-dat-test, fails like this: NewsB_scri.L02Mm01.asc: substantial differences significant differences on 1 (out of 2) lines maximum absolute difference in column 1 is 963 maximum absolute difference in column 2 is 0.000185770963653907 maximum absolute difference in column 3 is 0.000142466608463344 maximum relative difference in column 1 is 1 maximum relative difference in column 2 is 1 maximum relative difference in column 3 is 1 ... The third, SphericalHarmonicReconGen.SpEC-h5-test, fails like this: NewsB_scri.L02Mm01.asc: substantial differences significant differences on 1 (out of 2) lines maximum absolute difference in column 1 is 963 maximum absolute difference in column 2 is 0.000185770963653907 maximum absolute difference in column 3 is 0.000142466608463344 maximum relative difference in column 1 is 1 maximum relative difference in column 2 is 1 maximum relative difference in column 3 is 1 ... I suspect the second and third failures have the same cause. Do we have any idea why these tests fail? They don't seem to fail on any other machines (http://einsteintoolkit.org/testsuite_results/index.php). -- Ian Hinder http://members.aei.mpg.de/ianhin

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ADMMacros: Identidier is undefined
by Jens Mahlmann 11 Jul '17

11 Jul '17

Dear all, I am currently working on an analysis thorn which makes use of different quantities provided by the thorn ADMMacros. In one .cc file I assemble different routines. Especialy, one of those uses UPPERMET, and another one uses TRRICCI. Using the declaration and definition from the thorn documentation, I made sure to correctly employ the includes of _declare, _guts, and, _undefine. However, when compiling I keep receiving the following error: In file included from /scratch/je/jensflo/EinsteinTools/Cactus/arrangements/EinsteinBase/ADMMacros/src/macro/UPPERMET_guts.h(14), from /scratch/je/jensflo/EinsteinTools/Cactus/arrangements/EinsteinBase/ADMMacros/src/macro/TRRICCI_guts.h(15), from /scratch/je/jensflo/EinsteinTools/Cactus/configs/sim/build/FFEvolve/FFEvolve_Analysis.cc(412): /scratch/je/jensflo/EinsteinTools/Cactus/arrangements/EinsteinBase/ADMMacros/src/macro/DETG_guts.h(36): error: identifier "detg_psi4" is undefined DETG_PSI4 = 1; This error occurs for a variety of other identifiers in the same place. If I take out the TRRICCI part from the code, I do not get these error messages. I would be so glad about an insight into this. Thank you so much and my best from Valencia Jens

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meeting minutes for 2017-07-10
by Roland Haas 10 Jul '17

10 Jul '17

Present: Bhavesh, Eloisa, Ian, Roberto, Steve, Vassili, Roland, Erik, Peter ET release: * ML ADM constraints: have patch to handle this, needs to run on cluster, git hash b051a5d3, Peter and Steve will fix the regex which is a bit too * Roberto will add simfactory option lists for Marconi and submit test results * name: Hack (https://en.wikipedia.org/wiki/Margherita_Hack) * will have a release later this week Gallery examples: * most gallery examples use a fixed release of the thorn list * should be updated to use the current release and remove not-ET thorns where possible * will not hold up release for this, but want to look into this. ** Ian for BBH, Llama. Tasks: * Roland to run the testsuites * Roland to check on simplified tutorial * Steve and Peter to fix the regex, Roland then to run tests once more * Peter and Steve to familiarize with release procedure and how to run the calls 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://pgp.mit.edu .

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Einstein Toolkit Meeting Reminder
by Steven R. Brandt 10 Jul '17

10 Jul '17

Hi Please consider joining the weekly Einstein Toolkit phone call at 9:30 am US central time on Mondays. https://docs.einsteintoolkit.org/et-docs/Main_Page Sorry for the short notice. --Steve

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the correct link
by Steven R. Brandt 10 Jul '17

10 Jul '17

Anyone still in limbo, this is the correct link: https://hangouts.google.com/call/sho3u7ijlvhdfn2o7xhyni3q2ey --Steve

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Users July 2017