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Agenda for Thursday's Meeting
by users＠einsteintoolkit.org 27 Apr '26

27 Apr '26

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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Minutes for 2026-04-23
by Steven Brandt 23 Apr '26

23 Apr '26

April 23, 2026 Chair: Peter Minutes: Steve Present: Beyhan, Steve, Roland, Deborah, Peter, Lucas, Maxwell, Johnny Release: TwoPuncturesX: - Dealing with AI bug reports - Lucas: New tests, compared with old output converges CapyrX: - A small head-on collision test - list if interpatch artifact conditions - convergance testing CanudaX: - Lucas found a small scheduling issue Boost: - Needs to find exactly which version fails to compile - Handle boost change in which libs are include-only - Working on making less gigantic git repos Johnny and Noora: - Noora may have late Fronterra testsuite results North American ET workshop: Deadline to ask for travel has passed. Atlassian Retiring Bitbucket Cloud Issues No updates Kyoto Initiative - Zach met with attendees and learned about technical details First goal is a GW comparison slightly unequal mass BNS tabulated eqn of state, no mag fields. 80 m resolution around the NS Tickets: 2909 - Roland will look 2908 - Steve should examine tests 2932 - Kuibit with PR from Maxell 2934 - Files don't truncate 2933 - Header issue 2912 - Llama developers are silent, should be fixed 2930 - Bug in quasi-local measures, should be easy to test 2929 - mentioned 2923 - ADIOS2 fails to compile on Delta "Falling in love is not at all the most stupid thing that people do, but gravitation cannot be held responsible for it."- Einstein

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Einstein Toolkit Meeting Reminder
by users＠einsteintoolkit.org 22 Apr '26

22 Apr '26

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. 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 20 Apr '26

20 Apr '26

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 2026-04-16
by rhaas＠mail.ubc.ca 16 Apr '26

16 Apr '26

Present: Roland, Steve, Lucas, Beyhan, Cheng-Hsin, Johnny, Jordan Nicoules, Max, Rahime, Zach ET release ========== * things are moving along slowly * Steve in contact with Gabriele about kuibit and its OpenPMD support ** Jordan finds that Llama output is not supported (due to different file names) * Beyhan finished the TOV gallery test, will need to reduce file size ** currently not all gallery examples have explicit instructions on what to upload and / or step-by-step run instructions Testsuite results ================= * TOVola test failing on a couple of machines (anvil, sunrise, hopper1, db, frontera, delta, expanse), Zach will investigate * TwoPuncturesX test are failing. Steve will look at them. Proposed inclusions =================== * No progress on CapyrX review * Zach did initial review of Cottonmouth ET summer school and workshop ============================= * registration still open * https://etksummerschool2026.illinois.edu/registration/ Bitbucket retirement ==================== * no updates * Jordan pointed out that Atlassian no longer lets one fork repositories outside of their workspace, making it impossible to create a pull request * https://community.atlassian.com/forums/Bitbucket-articles/Deprecation-of-Fo… Kyoto initiative ================ * no updates * Zach is meeting with volunteers Open tickets ============ * https://bitbucket.org/einsteintoolkit/tickets/issues/2930 bug-in-quasilocalmeasures created by Marco Brito, needs a check of proposed fix * https://bitbucket.org/einsteintoolkit/tickets/issues/2929 Max and Leo in contact, pull request approved by Terrence. Fix seems somewhat strange in that it is fixed in the library not the thorn * https://bitbucket.org/einsteintoolkit/tickets/issues/2912 inconsistent-computation-of-the-volume no response by Llama devs * https://bitbucket.org/einsteintoolkit/tickets/issues/2908 cactus-fixed-arg-list-too-long-error re-review is requested * https://bitbucket.org/einsteintoolkit/tickets/issues/2921 multipatch-support-in-newradx Lucas and Cheng-Hsin are in contact * https://bitbucket.org/einsteintoolkit/tickets/issues/2898 carpetx-split-interpolator-calls-into Roland is reviewer, time is running short to get this in 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 users＠einsteintoolkit.org 15 Apr '26

15 Apr '26

1 0

Agenda for Thursday's Meeting
by users＠einsteintoolkit.org 13 Apr '26

13 Apr '26

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 2026-04-09: Amended
by Lucas Timotheo Sanches 09 Apr '26

09 Apr '26

Attendees: Peter Diener, Lucas T. Sanches (minutes), Steven R Brandt (chair), Roland, Jordan Nicoules, Cheng Hsin Cheng, Maxwell Rizzo, Nikolai Wallin. # Pre agenda topics Because Jordan joined, we started discussing issue 2927. He found a bug with GCC versions. Steve thinks that this is due to a bug when CST gets generated into code. He says he should be able to find the problem. We also discussed issue 2912, due to the Llama inconsistent volume forms. Jordan says he has a fix for the issue though, so he promised to send a PR to fix it soon. # ET_2026_05 release ## Gallery runs - The BH-NS gallery example is done now. - No other gallery runs have started. ## Test suite runners - Anvil and Sunrise are giving problems on multiple thorns: 1. CCE export. Peter looked at the failures. Two HDF5 are generated but the test suite obviously cannot compare binaries, so it relies on a python script. It's likely that Python is the root issue here. 2. CanudaX NP Scalars 3. CottonmouthBSSNOK. TwoPuncturesX is failing everywhere. Steve says the tests should be updated. Some tests require matter, which we don't have for CarpetX on the release. ## Thorn Reviews - BHaHAHA: Peter wants to create a par file with it included so he can understand all the options. Zach says he would like to chat about it and Peter wants to include it in SPHINCS BSSN. - Boost: Peter tried to download and put it in his thornlist, but it is failing. Roland says we should actually decide what we are going to provide from boost. So far, it seems we need System, file system, math, parameter parsing. Sam Tootle clarified that Fuka only requires Boost Python for the Python libraries which are built manually by the user and are not required by the importer. - Cottonmouth: Lucas presented some prelim. results of a new Z4c recipe. Steve stated our intention to have this thorn proposed for inclusion. Steve also presented timing results. # ET Workshop at UIUC - Registration is open. - Speakers have been invited. Many have responded. # Atlassian ticket migration - No updates as of yet, we still have time. # Kyoto initiative - IllinoisGRMHD had volunteers on their behalf. Zach is going to meet with them to discuss details. They may join next ETK call # Mailing list questions - Bug in QuasiLocalMeasures: Jordan will let his collaborator make a ticket. - Range error setting parameter, on cluster: Jordan discussed this during the start of the call. A ticket will be made about it # Tickets - 2928: Steve asked the community's opinion on adding a gpu option to simfactory. Lucas and Cheng-Hsin would like that. - 2923: Maybe upgrading ADIOS2 fixes the issue, but Cheng-Hsin had not time to test it yet. - 2910: Apply. - 2921: Cheng-Hsin has further comments, he will add it.

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Meeting Minutes for 2026-04-09
by Lucas Timotheo Sanches 09 Apr '26

09 Apr '26

Attendees: Peter Diener, Lucas T. Sanches (minutes), Steven R Brandt (chair), Roland, Jordan Nicoules, Cheng Hsin Cheng, Maxwell Rizzo, Nikolai Wallin. # Pre agenda topics Because Jordan joined, we started discussing issue 2927. He found a bug with GCC versions. Steve thinks that this is due to a bug when CST gets generated into code. He says he should be able to find the problem. We also discussed issue 2912, due to the Llama inconsistent volume forms. Jordan says he has a fix for the issue though, so he promised to send a PR to fix it soon. # ET_2026_05 release ## Gallery runs - The BH-NS gallery example is done now. - No other gallery runs have started. ## Test suite runners - Anvil and Sunrise are giving problems on multiple thorns: 1. CCE export. Peter looked at the failures. Two HDF5 are generated but the test suite obviously cannot compare binaries, so it relies on a python script. It's likely that Python is the root issue here. 2. CanudaX NP Scalars 3. CottonmouthBSSNOK. TwoPuncturesX is failing everywhere. Steve says the tests should be updated. Some tests require matter, which we don't have for CarpetX on the release. ## Thorn Reviews - BHaHAHA: Peter wants to create a par file with it included so he can understand all the options. Zach says he would like to chat about it and Peter wants to include it in SPHINCS BSSN. - Boost: Peter tried to download and put it in his thornlist, but it is failing. Roland says we should actually decide what we are going to provide from boost. So far, it seems we need System, file system, math, parameter parsing, and FUKA also needs python, but that will be a headache. - Cottonmouth: Lucas presented some prelim. results of a new Z4c recipe. Steve stated our intention to have this thorn proposed for inclusion. Steve also presented timing results. # ET Workshop at UIUC - Registration is open. - Speakers have been invited. Many have responded. # Atlassian ticket migration - No updates as of yet, we still have time. # Kyoto initiative - IllinoisGRMHD had volunteers on their behalf. Zach is going to meet with them to discuss details. They may join next ETK call # Mailing list questions - Bug in QuasiLocalMeasures: Jordan will let his collaborator make a ticket. - Range error setting parameter, on cluster: Jordan discussed this during the start of the call. A ticket will be made about it # Tickets - 2928: Steve asked the community's opinion on adding a gpu option to simfactory. Lucas and Cheng-Hsin would like that. - 2923: Maybe upgrading ADIOS2 fixes the issue, but Cheng-Hsin had not time to test it yet. - 2910: Apply. - 2921: Cheng-Hsin has further comments, he will add it.

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Einstein Toolkit Meeting Reminder
by users＠einsteintoolkit.org 08 Apr '26

08 Apr '26

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