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Meeting minutes 2022-03-24
by Miguel Gracia 24 Mar '22

24 Mar '22

Present: Roland H., Miguel G., Yosef Z., Atul K., Peter D. , Steven B., Leonardo W., Bill G. Chair: Yosef Z. Minutes: Miguel G * Next ET release<https://docs.einsteintoolkit.org/et-docs/Release_Process>, Details<https://docs.einsteintoolkit.org/et-docs/Release_Details>. -No update on FLRW Solver inclusion. -Few days to first major task (McLachlan and NRPy+ code generation), McLachlan and NRPy+ previous code generation problems are fixed now. It should be easy to regenerate the codes. Roland is going to do the McLachlan part. - BBH gallery example still missing a tester. • USA ET meeting - [Leo] Sent invitations to speakers, waiting for the an answer. - [Leo] ~7-8 in person participants already registered. There’s a registration fee for in person participants but not for remote. -Steve had some travel logistics questions. To address these an update will be added to the travel information section of the school’s website<https://einsteintoolkit.github.io/et2022uidaho/index.html>. * EU ET meeting website<https://sites.google.com/view/eetm2022/home> August 29th-September 2nd in Dublin Ireland. No updates * Unanswered question on mailing list: sim build problem<http://lists.einsteintoolkit.org/pipermail/users/2022-March/008435.html> on MacOs The user is not following the instructions from the tutorial, Roland will reply. * Open tickets Ticket 2596<https://bitbucket.org/einsteintoolkit/tickets/issues/2596/einsteininitialda…> TwoPunctures not deallocating , Zach and Roland are taking care of it. Ticket 2601<https://bitbucket.org/einsteintoolkit/tickets/issues/2601/add-four-more-par…> Add four more parameters for carpet. Roland proposed to make the changes more general Ticket 2599<https://bitbucket.org/einsteintoolkit/tickets/issues/2599/nsnstohmns-cannot…> change the definitions of constants in the header of the LORENE file seems to fix the problem, see the ticket for a discussion. * Tickets ready to review Ticket 332<https://bitbucket.org/einsteintoolkit/tickets/issues/332/cactus-should-not-…> pull request needs a reviewer. Next calls: Chair:Roland Minutes: Leo Chair: Peter Minutes: Bill end of the call

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Einstein Toolkit Meeting Reminder
by users＠einsteintoolkit.org 23 Mar '22

23 Mar '22

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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Agenda for Thursday's Meeting
by users＠einsteintoolkit.org 21 Mar '22

21 Mar '22

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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Snowmass CF7: Waveform White Paper for endorsement
by Helvi Witek 20 Mar '22

20 Mar '22

Dear all, in response to the invitation to submit a white paper on "Numerical relativity for next-generation gravitational-wave probes of fundamental physics" to the Snowmass2021 - Cosmic Frontier 7 Topical Group, we prepared this white paper: https://arxiv.org/abs/2203.08139 Snowmass is similar in spirit to the US Astro2020 Decadal Survey, but is pitching to the high-energy physics community to solicit support from NSF Physics and the Department of Energy (DOE) for future gravitational wave detectors and science. We have to submit a final version until the end of March. Therefore, we would like to solicit your endorsement, and include your feedback or comments until 25 March 2022. Please add your information to this overleaf document https://www.overleaf.com/2627726733zdppgkvqwxjp The document is structured as follows - endorsers: if you would like to endorse the white paper, please sign-up in the overlead and list your name, institution, email address - NR code: if you would like us to include your numerical relativity code in Table 1 of the white paper (https://arxiv.org/abs/2203.08139), please list the code's name with 1-2 references, indicate if it is open source, if you used it to create a waveform catalog, the formulation used, if it is has modules for (general-relativistic) hydro-dynamics and if it is has modules for alternative gravity theories. - Comments per section - If you would like us to include additional references, please provide the *inspires* bibtex code whenever possible. Best wishes Helvi, Francois, Pablo, Geoffrey, David -- --------------------------------------------- Dr. Helvi Witek Assistant Professor Department of Physics University of Illinois at Urbana-Champaign 247 Loomis Lab 1110 W Green St Urbana, IL 61801 ---------------------------------------------

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Meeting minutes for 2022-03-17
by Atul Kedia 17 Mar '22

17 Mar '22

Present: Roland, Peter, Yosef, Leo, Atul Chair: Peter, Minutes: Atul ET release: Gallery: Binary Black Hole example (http://einsteintoolkit.org/gallery/bbh/index.html) tester needed. If interested in volunteering, please email or call into a weekly meeting. SelfForce Code: Samuel Cupp has things for Regge-Wheeler-Zerilli Eq. on SelfForce code. Will be preparing a pull request. Peter would likely be the reviewer. To be added to the Release Details. Roland : FLRW solver to be tried on a few machines. [https://www.einsteintoolkit.org/tools/unanswered.php unanswered question on mailing list] /None [https: //bitbucket.org/einsteintoolkit/tickets/issues?status=open&status=new&sort=- updated_on open tickets sorted by update time] / #963: Improve McLachlan accuracy : No update #? : Init3 time level : No update? #1568: Reduce overhead of Formaline Fomarline takes too long. Linker issues. #2594: auto-update of ET documentation no longer worksRH: The ET documentation on the website used to auto-generate every day with Jenkins. But it doesn't do that anymore. A summer student would be assigned to work on GitHub actions to fix this. [https: //bitbucket.org/einsteintoolkit/tickets/issues?status=new&status=open&sort=- updated_on&q=Please%20review tickets ready for review] #2518: retire BlueGene/Q support in thorn vectorsMachines no longer exist. Need to remove two thorns that were needed to support them. Future calls: 24 March: * chair: Yosef , * minutes: Miguel 31 March: * chair: Roland , * minutes: Leo

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Einstein Toolkit Meeting Reminder
by users＠einsteintoolkit.org 16 Mar '22

16 Mar '22

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multipatch visualization of Thornburg04
by Tomas Andrade 15 Mar '22

15 Mar '22

Hi, I’m trying to create a multipatch visualization using VisIt’s GUI (version 3.1.4, on MacOS). I am following the tutorial https://docs.einsteintoolkit.org/et-docs/GW150914_VisIt_Tutorial which allows me to correctly visualize the Cartesian portion of the grid as in the provided example. However, I am unable to visualize the spherical part of the grid, which, if I understand correctly, should be in the data since the grid settings in the parfile include Carpet::domain_from_multipatch = yes CartGrid3D::type = "multipatch" CartGrid3D::set_coordinate_ranges_on = "all maps" Coordinates::coordinate_system = "Thornburg04" For concreteness, let’s say we are working with the data from the file `phi.0.xy.h5`. Taking some hints from the thread http://lists.einsteintoolkit.org/pipermail/users/2019-January/006716.html it seems that the coordinate files `x.0.xy.h5`, `y.0.xy.h5`, `z.0.xy.h5` are required to visualize the spherical part of the grid, so I open all of these files before doing, say, Add > Pseudocolor > ML_BSSN_phi. This produces the Cartesian portion of the grid. I’ve tried looking for the option "Carpet Multipatch” but it doesn’t seem to be available. Any recommendations? Thank you! Tomas -- Aquest missatge, i els fitxers adjunts que hi pugui haver, pot contenir informació confidencial o protegida legalment i s’adreça exclusivament a la persona o entitat destinatària. Si no consteu com a destinatari final o no teniu l’encàrrec de rebre’l, no esteu autoritzat a llegir-lo, retenir-lo, modificar-lo, distribuir-lo, copiar-lo ni a revelar-ne el contingut. Si l’heu rebut per error, informeu-ne el remitent i elimineu del sistema tant el missatge com els fitxers adjunts que hi pugui haver. Este mensaje, y los ficheros adjuntos que pueda incluir, puede contener información confidencial o legalmente protegida y está exclusivamente dirigido a la persona o entidad destinataria. Si usted no consta como destinatario final ni es la persona encargada de recibirlo, no está autorizado a leerlo, retenerlo, modificarlo, distribuirlo o copiarlo, ni a revelar su contenido. Si lo ha recibido por error, informe de ello al remitente y elimine del sistema tanto el mensaje como los ficheros adjuntos que pueda contener. This email message and any attachments it carries may contain confidential or legally protected material and are intended solely for the individual or organization to whom they are addressed. If you are not the intended recipient of this message or the person responsible for processing it, then you are not authorized to read, save, modify, send, copy or disclose any part of it. If you have received the message by mistake, please inform the sender of this and eliminate the message and any attachments it carries from your account.

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Agenda for Thursday's Meeting
by users＠einsteintoolkit.org 14 Mar '22

14 Mar '22

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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LORENE Initial Data
by Nisa Amir 13 Mar '22

13 Mar '22

How can i reproduce initial data file (e.g G2_I12vs12_D4R33T21_45km.resu <https://einsteintoolkit.org/gallery/bns/G2_I12vs12_D4R33T21_45km.resu.xz>) for a new neutron star parameters with LORENE code? I have already installed and compiled the LORENE, but do not know what to do afterwards.

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meeting minutes for 2022-03-10
by Roland Haas 10 Mar '22

10 Mar '22

Present: Roland, Peter, Yosef, Leo, Miguel, Atul, Maria, Bill, Zach ET release: * schedule has been created, on wiki * according to schedule all proposed codes should be in master * for FLRWsolver: try and see if current method to compile would work * regenerate code April 1st * feature freeze April 12th * binary black hole gallery example needs a volunteer, have some time Next ET meeting (U Idaho): * virtual and in person * Moscow, Idaho, June 13 to June 17 * https://einsteintoolkit.github.io/et2022uidaho/index.html * registration fee, but have support money that can be applied for * will have slots for lightning talks available Open tickets: * discussed #2599 https://bitbucket.org/einsteintoolkit/tickets/issues/2599/nsnstohmns-cannot… ** this could affect our gallery runners, if we switched to a default of LORENE2 in this release () * discussed #2518 https://bitbucket.org/einsteintoolkit/tickets/issues/2518/retire-bluegene-q… which Roland addressed after the hackathon * discussed #2598 https://bitbucket.org/einsteintoolkit/tickets/issues/2598/thornyflat-produc… for which Maria is in contact with ThornyFlat supprt AOB: * Atul asked about tutorial or video on how to understand parfiles ** Roland mentioned that Erik may have discussed this at the ICERM meeting at Brown a couple of years ago ** link to video is on ET wiki, direct link here: https://icerm.brown.edu/video_archive/?play=2356 around 2 hours in is the parfile discussion * Leo asked about how to finely control what SYNC does, specifically looking for a way to exchange ghost zones but does not transfer information ** no function to do just ghost zone exchange ** could use EnableProlongation / DisableProlongation (in Carpet/interface.ccl) * Leo noticed that volume computation in VolumeIntegral has to multiply ** asked about way to directly sum up grid function values without adjusting by volume ** Roland suggested to give "isum" reduction a try Meeting March 24th: * chair: Yosef Zlochower * minutes: Miguel Gracia 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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