Users March 2024

users@lists.einsteintoolkit.org

9 participants
20 discussions

About SYNCs with staggered variables
by Luciano Combi 12 Apr '24

12 Apr '24

Hi, community, I was doing some benchmark tests for my version of GRHydro with TimerReport and I found that a lot of time in the code is spent in SYNCs for the staggered variables. Analogous to IllinoisGRMHD I have the following lines in the schedule.ccl { > SYNC: > GRHydro::em_Ax,GRHydro::em_Ay,GRHydro::em_Az,GRHydro::em_psi6phi > LANG: C > } "Schedule symmetries -- Actually just a placeholder function to > ensure prolongations / processor syncs are done BEFORE outer boundaries are > updated." According to the timer, this takes 3 times more than other SYNCs. Is there a reason for this? Is it related to the prolongation operators for staggered variables? Thanks for your help! *Dr. Luciano Combi* Postdoctoral Researcher Perimeter Institute for Theoretical Physics CITA National Fellow (U. of Guelph) ---

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Oscillations in total angular momentum from QuasiLocalMeasures
by Sudipta Hensh 01 Apr '24

01 Apr '24

Dear all, I hope this email finds you well. I am performing simulations of BNS mergers and utilizing the QuasiLocalMeasures thorn to plot the total angular momentum of the spacetime. However, I have noticed high-frequency oscillations in the plotted data, as shown in the attached plot. I was wondering if we should expect such oscillations. I would also like to know the reason behind such oscillations. I would appreciate if you kindly help me to understand this issue. I am looking forward to hearing from you. Many thanks in advance! Regards, Sudipta Hensh JSPS Postdoctoral Researcher Pronouns: He/Him Graduate School of Science Osaka University 1-1 Machikaneyama-cho, Toyonaka Osaka 560-0043, Japan

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Compiling ET_2023_11 on Frontera
by Richards, Chloe Beth 29 Mar '24

29 Mar '24

Hi everyone, I tried to compile the most recent release of the toolkit, ET_2023_11, on Frontera using simfactory and had some issues compiling certain thorns. In case there are others that are having similar issues, I was able to successfully compile once I commented out the following lines/thorns: * ExternalLibraries/Silo * GRHayL Library and GRHayL-dependent thorns * CarpetX thorns If users have successfully compiled with the thorns I commented out, please let me know. Thanks! Best, Chloe Richards

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WeylScal4 failing testsuites with ET_2023_11
by Bernard Kelly 29 Mar '24

29 Mar '24

Hi. I just tried running a parameter file with WeylScal4 using the ET_2023_11 release, and it fails during the pre-initial stage, with screen output like the following: ------------- NFO (CarpetIOHDF5): I/O Method 'IOHDF5_1D' registered: 1D AMR output of grid variables to HDF5 files INFO (CarpetIOHDF5): I/O Method 'IOHDF5_2D' registered: 2D AMR output of grid variables to HDF5 files INFO (CarpetIOHDF5): Periodic 2D AMR output requested for: ML_ADMCONSTRAINTS::H INFO (CarpetIOHDF5): I/O Method 'IOHDF5_3D' registered: 3D AMR output of grid variables to HDF5 files INFO (CarpetIOScalar): Periodic scalar output requested for: ML_BSSN::H ML_BSSN::M1 ML_BSSN::M2 ML_BSSN::M3 cactus_sim_ET_2023_11_WS4_ORIG: /nobackupp19/bjkelly1/codes/Cactus_ET_2023_11/configs/sim/build/Cactus/main/RDWR.cc:336: int cctki_RDWR::CCTK_HasAccess(const _cGH *, int): Assertion `current_function->RDWR' failed. Rank 3 with PID 73750 received signal 6 Writing backtrace to Kerr_LES_StandardSpin_VACUUM_dx032_WS4_ORIG/backtrace.3.txt ------------- I tried to run the WeylScal4 testsuites too (Teukolsky etc), with the same "Assertion `current_function->RDWR' failed" message. Just to check, I went back an ET release (ET_2023_05), and did the same test, and the tests ran & passed. So did something happen between releases to change the behavior of WeylScal4? And would it affect other Kranc-generated thorns too? Thanks, Bernard -- ------------------------------------------------------------------ Bernard Kelly -- CRESST Assistant Research Scientist, NASA/GSFC Gravitational Astrophysics Laboratory --- Code 663 Phone: +1 (301) 286-7243 *** Fax: +1 (301) 286-2226 Web: http://science.gsfc.nasa.gov/sed/bio/bernard.j.kelly ORCID: orcid.org/0000-0002-3326-4454 ------------------------------------------------------------------

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US ET Workshop and Meeting 2024
by Steven Brandt 28 Mar '24

28 Mar '24

North American Einstein Toolkit Workshop and Meeting 2024 TheNorth American Einstein Toolkit Meeting <https://www.cct.lsu.edu/Einsteintoolkitworkshop2024>will take place from 3 - 7 June 2024 atThe Center for Computation and Technology <https://cct.lsu.edu/>, atLouisiana State univerisity <https://lsu.edu/>in Baton Rouge, Louisiana. (https://www.cct.lsu.edu/Einsteintoolkitworkshop2024) This was a hybrid conference with talks and participants both in-person and over zoom. Please register through the site and indicate whether you would like to give a talk. The Einstein Toolkit is a community-driven software platform of core computational tools to advance and support research in relativistic astrophysics and gravitational physics. The conference consist of a mixture of tutorials for new users and talks about the latest developments both in the toolkit and the larger scientific community. Looking forward to seeing you there! --Steve

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meeting minutes for 2024-03-28
by Roland Haas 28 Mar '24

28 Mar '24

Present: Roland, Peter, Sam, Steve, Zach ET US workshop ============== * date set to June 3 - 7 ET release timeline =================== * April 5th deadlines moved to April 19th * code is expected to be in master ** need to add Z4c ** need to add MultipoleX ** need to add NewRadX * create tickets for each contribution SpaceTimeX ========== * all in favor of trying to move SpaceTimeX to ET repos CarpetX ======= * all in favor of trying to move CarpetX to ET repos unanswered questions ==================== * https://lists.einsteintoolkit.org/pipermail/users/2024-March/009256.html related to https://bitbucket.org/einsteintoolkit/tickets/issues/2781 now merged to master tickets ======= * https://bitbucket.org/einsteintoolkit/tickets/issues/2748/inclusion-of-spac… should be made more specific for release to be used to add spacetimex to ET repos * https://bitbucket.org/einsteintoolkit/tickets/issues/2696/update-kuibit-to-… Max ran into issues with kuibit on db1 following the tutorial * https://bitbucket.org/einsteintoolkit/tickets/issues/2786/support-carpetx-i… this touches on the larger issue on CarpetX / Carpet non-compatibility tickets ready for review ======================== * no new tickets * https://bitbucket.org/einsteintoolkit/tickets/issues/963/improve-mclachlan-… Peter and Zach still working on this No ET call April 4th due to APS meeting. 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 rhaas＠illinois.edu 27 Mar '24

27 Mar '24

Hello, Please consider joining the weekly Einstein Toolkit phone call at 9:00 am US central time on Thursdays. For details on how to connect and what agenda items are to be discussed, use the link below. ** DAYLIGHT SAVING TIME WARNING ** Please note that the US / EU has already / not yet transitioned to / from daylight saving time. The phone call will be at 15:00 Central EU time. https://docs.einsteintoolkit.org/et-docs/Main_Page#Weekly_Users_Call --The Maintainers

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US ET Workshop and Meeting 2024
by Steven Brandt 27 Mar '24

27 Mar '24

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Agenda for Thursday's Meeting
by rhaas＠illinois.edu 25 Mar '24

25 Mar '24

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

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Meeting minutes for 2024-03-21
by Leo Rosa Werneck 21 Mar '24

21 Mar '24

Hi all, Here are the minutes for today’s ET call. Chair: Roland Haas Minutes: Leo Werneck Present: Roland Haas, Leo Werneck, Peter Diener, Sam Cupp, Zach Etienne Steve Brandt * No meeting two weeks from now (April 4) due to APS April Meeting * NA ET School/Workshop @ LSU - June 3-7 (https://www.cct.lsu.edu/Einsteintoolkitworkshop2024). - Steve is deciding on length of the talks. - Everyone in the call should be thinking about talk topics to email Steve. - There will be a field trip to LIGO. - Workshop is on track to happen. - Working workshop hackathon for CarpetX may or may not happen afterwards. * ET Release - Moving as expected. - About to hit the 10 week mark ("all codes proposed for inclusion in master branch"). - Roland will try to create CarpetX versions of Grid and CartGrid3D. - Discuss these ideas in the regular CarpetX meeting. - Helvi suggested having a new repository for NewRadX so it doesn't have to live in a private repo. Will have to be discussed later with her group and the RIT group, which were not present in today's call. - Roland will start the process by creating a CarpetX repository. - MultipoleX: issue with grid, but very minor changes compared to Multipole. - NewRadX: documentation and no-harm review are in progress. Might need to poke people to figure out required citations. - Z4c: Steve will poke Erik, but already at "no-harm" stage. - GRHayL-based IllinoisGRMHD: in main now, tests updated, waiting to complete. - GRHayLHDX: Terrence is reviewing. Steve suggested having a TOV test. - Baikal with NRPy+2.0: Might need to merge PR, review underway. - BaikalX: Might not be included in this release, as more testing is needed. - The review deadlines are being extended by a week to help reviewers who are attending the 2024 APS April Meeting. * Mailing List - Someone had a problem when debug mode is enabled and PreSync is set to “off”. A pointer isn't set, causing an assert can fail. Roland says this as a feature, not a bug, so it shouldn't be fixed with the proposed way. - One more email Erik is already involved with, so nothing to discuss. * Open Tickets - #2619: Alireza still interested in contributing Elliptica. - #2777: GRHayL-based IllinoisGRMHD --- Sam is working on fixing issues with backwards compatibility, as some of the tests are failing. - #2784: Cactus start up problems, Steve says he's working on it. - #2785: A friendly reminder that Zenodo is currently using the wrong URL. * Tickets ready for review N/A Next Chair: Sam Next Minutes: Roland Best, Leo ------ Leonardo R. Werneck, Ph.D. Postdoctoral researcher Office EP 314 | Department of Physics | University of Idaho 875 Perimeter Dr. MS 0903 Moscow, ID 83844-0903, USA leonardo(a)uidaho.edu <mailto:leonardo@uidaho.edu> https://leowerneck.github.io <https://leowerneck.github.io/>

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