Users August 2025

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Meeting minutes for 2025-08-26
by Steven Brandt 28 Aug '25

28 Aug '25

Aug 28, 2025 Present: Roland, Steve, Keith, Deborah, Leo, Nikolai, Zach, Lucas, Jay, Helvi, Johnny * BBH Gallery Example * Nikolai is a new student from BYU working for Zach * Open Tickets 2882 - Running BBH high mem/cpu low performance 2884 - Remove static variables used in fortran wrappers 1847 - FFTW ticket 2858 - Mare Nostrum files - Trying to use Singularity, some success Does not have access to the internet, so rely on rsync 2866 - Building ET on MN5: OpenCL, probably should just disable 2867 - WaveyToX examples, HDF5 output error message in all three examples Seems to be harmless? 2880 - Backport External Libraries for gcc-15 Roland is working on this 2883 - External libraries failing with CMake 4.0 2733 - make CarpetX-Thorndoc is confused in perl Steve will work on this 2878 - CarpetX: Add multipatch output support * Tickets ready for review 2764 - PUGH tries to free memory not allocated by malloc 963 - Improve McLachlin Accuracy Zach will talk to Peter. Should link to BBH gallery example ticket: 2706 2855 - NoiseX 2860 - Don't call opt 4th order 2851 - Cray Pointer issue with Canuda - Merged PR, can close ticket. Zach suggests we sort tickets by reverse sort

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Einstein Toolkit Meeting Reminder
by users＠einsteintoolkit.org 27 Aug '25

27 Aug '25

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 25 Aug '25

25 Aug '25

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 2025-08-21
by Roland Haas 21 Aug '25

21 Aug '25

Present: Peter, Roland, Steve, Beyhan, Johnny, Keith, Lucas, Maxwell, Yosef BBH gallery example =================== * no updates on BBH gallery examples, Roland to send reminders Backports to Kruskal ==================== * Roland provided updates, is mostly done with testing * extra changes for CMake 4.0 will also be included Simfactory files ================= * Lucas is in the process of testing the provided MN5 files on MN5 * Roland reported that Bruno Giacomazzo and Fatemeh Hossein Nouri provided files for the Leonardo system at Cineca which will be included as well Open tickets ============ * https://bitbucket.org/einsteintoolkit/tickets/issues/2859 iohdf5-passes-cflags-to-linker Beyhan will review * https://bitbucket.org/einsteintoolkit/tickets/issues/963 improve-mclachlan-accuracy no updates, timing is difficult with Zach travelling * https://bitbucket.org/einsteintoolkit/tickets/issues/2764 pugh-tries-to-free-memory-not-allocated-by no updates by Beyhan * https://bitbucket.org/einsteintoolkit/tickets/issues/2882 running-bbh-with-carpetx-with-cpus-high no updates, Roland to ping * https://bitbucket.org/einsteintoolkit/tickets/issues/2867 wavetoyx-examples-hdf5-output-error-in-all Keith says low priority * https://bitbucket.org/einsteintoolkit/tickets/issues/2858 compiling-carpetx-issues-with-pdesolvers Lucas is in the process of testing the provided MN5 files on MN5 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 20 Aug '25

20 Aug '25

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Agenda for Thursday's Meeting
by users＠einsteintoolkit.org 18 Aug '25

18 Aug '25

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 2025-08-07
by Roland Haas 14 Aug '25

14 Aug '25

Present: Deborah, Roland, Steve, Peter, Beyhan, Jhon, Johnny, Keith, Maxwell, Liwei, Yosef Chair: Deborah Minutes: Roland BBH gallery example =================== * no updates Questions on mailing list ========================= * simfactory macros, https://lists.einsteintoolkit.org/pipermail/users/2025-July/009692.html, responded in digest by Leo https://lists.einsteintoolkit.org/pipermail/users/2025-July/009701.html Open tickets ============ * https://bitbucket.org/einsteintoolkit/tickets/issues/2882 running-bbh-with-carpetx-with-cpus-high Liwei will respond * https://bitbucket.org/einsteintoolkit/tickets/issues/2881 running-bbh-with-carpetx-assertion-all-i-0 Liwei will respond * https://bitbucket.org/einsteintoolkit/tickets/issues/2773 make-carpetx-thorndoc-is-confused-in Steve will take a look, Roland poked an older ticket * https://bitbucket.org/einsteintoolkit/tickets/issues/2171 papi-compile-issues-with-intel-19-beta-on Roland will close as wontfix since too old OS * https://bitbucket.org/einsteintoolkit/tickets/issues/2867 wavetoyx-examples-hdf5-output-error-in-all is an older ticket, now made visible. In 2025-08-14 call Lucas confirms that Silo is producing this warning. * https://bitbucket.org/einsteintoolkit/tickets/issues/2866 problem-while-building-the-et-on-mn5 Steve will try and respond * https://bitbucket.org/einsteintoolkit/tickets/issues/2880 backport-externallibraries-changes-for-gcc Roland is testing fixes on different OS distros * https://bitbucket.org/einsteintoolkit/tickets/issues/2848 updates-to-flrwsolver No updates, still not sure how to provide fully reproducible pseudorandom number generator * https://bitbucket.org/einsteintoolkit/tickets/issues/2764 pugh-tries-to-free-memory-not-allocated-by Beyhan reports no updates * https://bitbucket.org/einsteintoolkit/tickets/issues/2282 gallery-examples-use-low-order-integration had a short discussion about integrations, Yosef reported that he has used Driscol-Healy in different code successfully for spherical harmonic decomposition. Issues are assigned to Zach. * https://bitbucket.org/einsteintoolkit/tickets/issues/963 improve-mclachlan-accuracy Peter is still working on this 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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Meeting Minutes for 2025-08-14
by Lucas Timotheo Sanches 14 Aug '25

14 Aug '25

Present: Lucas (minutes), Steven R Brandt (chair), Peter Diener, Beyhan, Helvi Witek, Jamie Bamber, Maxwell Rizzo, Roland Hass, Yosef Zlochower # Hackathon post mortem - Steve suggests that high level "how does the infrastructure works" talks may be useful for participants. Helvi added it as feedback for next talk. - Steve says he is open to having the next one at LSU. Steve suggests also that Canada is now a possibility. # Agenda items - BBH gallery example. Peter has not been able to get around to it yet. - Backports to Kruskal: Roland and Steve worked on various changes to make libs compile in various Linux distros. Roland reports to be testing it now on ACCESS clusters, and will merge it into master as soon as he is done testing. - Helvi asked Jay, Lucas and Cheng-Hsin to give updates on the projects of the Hackathon: 1. Jay: Ported Radicces M1, into a new code, called NUX. Removed GLS dependencies, close to having a GPU ready. Team effort, Allen, Jamie and Maxwell were the working forces. 2. Cheng-Hsin: Work on adding subcycling support to CanudaX. Got it into the evolution thorn, but Multipole output is not being output correctly. NewRadX performance and profiling the codes (Liwei, Lucas and Erik). 3. Lucas: Worked on getting higher order interpolation working on CapyrX. Initial tests indicate that evolution is working. He mentions wanting to run more tests using Multipole to see if the extracted wave forms are correct. He also worked on adding advective derivatives (working) and matter coupling (still needs work) to CottonmouthBSSN. 4. Steve: Created a JSON-like tags system for interface files. This feature can improve the way information is passed to the driver and aid in Cactus reflection mechanisms. He also created a reflection struct, that coalesces all useful information that Cactus has about a grid hierarchy. # Unanswered questions on the mailing list. - No questions # Tickets - 2858: Lucas says he can try the machine files for Marenostrum. If they work we will add them to simfactory. - 2867: Apparently, this happens when one does not use the SILO library that is distributed with the ETK. We discussed possibilities for making it work with spack. Roland has shared the options he uses while compiling. That may help. - 2872: Yosef points out that the problem went away with a new version but that does not mean it is solved. Steve says that there is not much we can do unless it shows up in the current or newer versions.

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Einstein Toolkit Meeting Reminder
by users＠einsteintoolkit.org 13 Aug '25

13 Aug '25

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Agenda for Thursday's Meeting
by users＠einsteintoolkit.org 11 Aug '25

11 Aug '25

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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