Users January 2019

users@lists.einsteintoolkit.org

14 participants
23 discussions

Einstein Toolkit Meeting Reminder
by Steven R. Brandt 31 Oct '19

31 Oct '19

Hi Please consider joining the weekly Einstein Toolkit phone call at 9:30 am US central time on Mondays. For details on how to connect and what agenda items are to be discussed, use the link below. https://docs.einsteintoolkit.org/et-docs/Main_Page#Weekly_Users_Call --Steve

8 94

Agenda for Monday's Meeting
by Steven R. Brandt 30 Oct '19

30 Oct '19

Please update the Wiki with agenda items for Monday's meeting. Thanks! https://docs.einsteintoolkit.org/et-docs/meeting_agenda --Steve

3 46

New Einstein Toolkit Release (Chien-Shiung Wu)
by Steven R. Brandt 30 Oct '19

30 Oct '19

=== Release Announcement === We are pleased to announce the sixteenth release (code name "Tesla") of the Einstein Toolkit, an open, community developed software infrastructure for relativistic astrophysics. The highlights of this release are Five new thorns have been added: * GiRaFFE * GiRaFFEfood * ShiftedKerrSchild * GiRaFFE_to_HydroBase * ID_converter_GiRaFFE In addition, bug fixes accumulated since the previous release in Feb 2018 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 tests pass, using both MPI and OpenMP parallelization. The changes between this and the previous release include: == Larger changes since last release == * Support has been added for GCC8. * Built-in OpenMPI tarball has been upgraded to 1.10.7 Note, we still recommend using the system MPI that is installed natively on your system. * And many bug fixes. Notably, a significant correctness problem for NewRad was addressed which caused many simulations with more than two ranks to fail https://trac.einsteintoolkit.org/ticket/2182 == New thorns or tools == * GiRaFFE (~1,600 lines of code): Solves the GRFFE equations in the formalism of Paschalidis and Shapiro [2] using the same reconstruction (PPM) and staggered vector potential methods as IllinoisGRMHD. * GiRaFFEfood (~1,300 lines of code): Code validation initial data and basic diagnostics. Contains Five 1D tests in flat spacetime (fast wave, Alfvén wave, degenerate Alfvén wave, "three-wave", FFE breakdown), One 3D test in flat spacetime (aligned rotator), and Three 3D tests in curved spacetimes ("Exact Wald" solution, "Magnetospheric Wald" solution, and split monopole). * ShiftedKerrSchild (~230 lines of code): Sets up all 3+1 quantities for a Kerr-Schild spacetime with an arbitrary radial shift, to mitigate effects of extreme spacetime curvature near r_{KS}=0. See Appendix of code release paper for full discussion. * GiRaFFE_to_HydroBase and ID_converter_GiRaFFE (~230 lines of code): Acts as a translation layer to convert 3-velocities in HydroBase's Valencia formalism to/from the 3-velocity found in the induction equation (vi = ui/u0; native to GiRaFFE). == Upcoming changes for the next releases == == New thorns planned for the next relases == * Seed_Magnetic_Fields-modified Extended Seed_Magnetic_Fields thorn for binary neutron stars. Supercedes Seed_Magnetic_Fields thorn. * Meudon_Bin_NS-modified Modifications to Meudon BNS initial data thorn to disable the overwriting of initial lapse/shift, which acts to significantly reduce coordinate eccentricity. Supercedes Meudon_Bin_NS thorn. * VolumeIntegrals_GRMHD Nice GRMHD volume integration thorn, currently depends on IllinoisGRMHD and Carpet. Performs volume integrals on arbitrary "Swiss-cheese"-like topologies, and even interoperates with Carpet to track NS centers of mass. * VolumeIntegrals_vacuum Nice GRMHD volume integration thorn, currently depends on ML_BSSN. There is a bit of code duplication and duplicated functionality between VI_GRMHD and VI_vacuum, to ensure that VI_vacuum can be used without enabling a GRMHD code. There is probably a better way of doing this, but I haven't had the time to think deeply about this. * particle_tracerET Solves the ODE \partial_t xi = vi for typically thousands of tracer particles, using an RK4 integration atop the current timestepping. E.g., one RK4 substep in the particle integration might occur every 16 RK4 substeps in the GRMHD evolution. These tracer particle positions are quite useful for visualizing magnetic field lines in a consistent way from frame-to-frame in a movie (recall that in the GRMHD approximation, the magnetic field lines stay attached the fluid elements they thread Flux Freezing?). Note that the velocity must be consistent with the velocity appearing in the GRMHD induction equation. This thorn reads in the HydroBase vel[] vector gridfunction, which assumes the Valencia formalism, and converts it into the induction equation velocity. * smallbPoynET Computes bi, b2, and three spatial components of Poynting flux. It also computes (-1-u0), which is useful for tracking unbound matter. * LeanBSSNMoL and NPScalars: LeanBSSNMoL evolves Einstein's Equations with the BSSN formulation. NPScalars computes the Newman-Penrose scalars. For the conformal factor it uses the "W" version, i.e. W=\gamma^{-1/6}, and it employs the usual "1+log" and "Gamma-driver" gauge conditions. Also available, in the "new_gauge" branch, is the shift condition of Figueras et al for their evolutions of higher dimensional BHs, see: https://arxiv.org/abs/1702.01755 https://arxiv.org/abs/1512.04532 * Proca arrangement: This repository (https://bitbucket.org/canuda/proca/src) provides the tools to evolve the Einstein-Proca system as first described in https://arxiv.org/abs/1505.00797 == How to upgrade from Tesla (ET_2018_02) == 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, Mint, OpenSUSE and MacOS (Homebrew and MacPorts) installations * Bluewaters * Comet * Cori * Draco * Edison * Golub * Hydra * Marconi * Minerva * Queenbee 2 * Stampede 2 * SuperMIC * Wheeler * 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). All repositories participating in this release carry a branch ET_2018_02 marking this release. These release branches will be updated if severe errors are found. The "Chien-Shiung Wu" Release Team on behalf of the Einstein Toolkit Consortium (2018-09-17) * Steven R. Brandt * Samuel D. Cupp * Peter Diener * Roland Haas * Roberto De Pietri Sep, 2018

1 1

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/

3 2

meeting minutes for 2019-01-31
by Haas, Roland 06 Feb '19

06 Feb '19

Present: Steve, Sam, Roland, Bill, Chris, Peter, Antoni, SSL certificates: * Steve working on it, not progress yet ET docker image: * Steve is thinking about creating a docker image to compile the ET in, so far in the trac to bitbucket: * will go ahead, Steve, Roland, Debopam to arrange for time * unknown users are being mapped to a user "anonymous" (who does not exist on bitbucket) ExternalLibraries to github: * moved master thornlist, last week * no reports of errors so far, will move release thornlist soon ET release * scheduled for March * names: https://docs.einsteintoolkit.org/et-docs/Release_Details * Proca as a name was suggested (if we get Lean + Proca in the release) * no update on the BNS gallery example yet ET workshop at RIT https://ccrg.rit.edu/index.php/content/events/2019-06-17/north-american-ein… ET Tutorial server: * have needed information to replicate server setup * will probably look into this after Feb 15th 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 .

1 1

move of ET ticket system to bitbucket
by Roland Haas 04 Feb '19

04 Feb '19

Hello all, we (the ET) are testing out moving the ET tickets to bitbucket: https://bitbucket.org/riksanyal/trac_bb/issues Please feel free to have a look and report any issues that you find to either Debopam Sanyal (who does the work) dsanyal2(a)illinois.edu or me (Roland Haas). Current plans are to go ahead with the conversion shortly after February 1st. 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 .

4 3

CarpetRegrid2
by Steven R. Brandt 30 Jan '19

30 Jan '19

My code (par file attached) is dying in regrid.cc with this error message: terminate called after throwing an instance of 'std::out_of_range' what(): vector::_M_range_check: __n (which is 0) >= this->size() (which is 0) The relevant code is below. I'm not sure what I'm doing wrong. Any ideas? Thanks. } else { // The level did not actually change: re-use the old domain // decomposition for (int m = 0; m < maps; ++ m) { superregsss.at(m).at(rl).swap(old_superregsss.at(m).at(rl)); int const ml = 0; regsss.at(m).at(rl).swap(old_regssss.at(m).at(ml).at(rl)); // <-- dying here } } // if level did change } // for rl --Steve

1 0

GR22 / Amaldi13: abstract submission and registration deadlines
by Toni Font 30 Jan '19

30 Jan '19

Dear colleagues, We are now approaching the deadline for Abstract submission (March 1) and early registration (April 12) in the GR22/Amaldi13 meeting in Valencia, July 7-12 2019. As you know, in 2019 we will be celebrating the centenary of Eddington's expedition, the direct detection of gravitational waves, and a number of extraordinary advances in the field of gravitation and relativity. I am writing to the ET users list to stimulate you and your colleagues, collaborators and students to register asap at the conference’s website: http://www.gr22amaldi13.com Updates can be followed via Twitter (@GR22AMALDI13) and Facebook (GR22-Amaldi13). There’s plenty of interesting parallel sessions to choose from to submit your abstract. In particular, there is a parallel session on numerical relativity (session B2, chaired by Carlos Palenzuela) which should be very well suited for most ET users. All the best, Toni Font GR22/Amaldi13 LOC Chair

1 0

sim error on macOS
by Hamilton, Maria 29 Jan '19

29 Jan '19

Hello, I compiled ET on Mojave, and I have this error when trying to run a test: ./simfactory/bin/sim create-run static_tov --parfile=par/static_tov_small_short.par Parameter file: /Users/babiuc/Cactus/par/static_tov_small_short.par Error: configuration 'sim', which has path '/Users/babiuc/Cactus/configs/sim' does not exist or is not readable Aborting Simfactory. It works just fine with the command: ./cactus_sim static_tov_small_short.par Maria _______________________ Dr. Maria C. Babiuc Hamilton Department of Physics Marshall University S257 Science Building Huntington, WV, 25755 Phone: (304)696-2754

4 3

Gravitational wave plot
by meraj emami 27 Jan '19

27 Jan '19

Hi all I have succeeded to perform BBH simulation using "inspiral_qc0_d06_lres.par" file and the sketch of black hole tracks has also plotted. How can I plot its related gravitational wave? thank you so much for your help Meraj

2 1

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

Users January 2019