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Meeting minutes for 2025-10-09
by Wallin, Nikolai (wall5948＠vandals.uidaho.edu) 09 Oct '25

09 Oct '25

<div style="direction: ltr; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" id="docs-internal-guid-e8240af0-7fff-59ca-1171-d24acf81047c" class="elementToProof">Minutes for the Einstein Toolkit Meeting, 20251009</div><div style="direction: ltr; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(17, 85, 204);" class="elementToProof"><u><a href="https://docs.einsteintoolkit.org/et-docs/Main_Page#Weekly_Users_Call" id="OWAc611d2a1-b54f-799a-ffc8-0e4bd7fdb547" class="OWAAutoLink" style="color: rgb(17, 85, 204);">https://docs.einsteintoolkit.org/et-docs/Main_Page#Weekly_Users_Call</a></u></div><div style="direction: ltr; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">9am CDT Thursdays</div><div style="direction: ltr; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">Chair Roland H Minutes: Nikolai W</div><div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"><br></div><div style="direction: ltr; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">Present -Nikolai W, Steven B, Peter D, Roland H, Beyhan, Bill G, Deborah F, Johnny T, Keith D, Leo W, Lucas S, Zacharia E</div><div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"><br></div><div style="direction: ltr; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">*BBH gallery example - Zach is still working on finishing </div><div class="elementToProof" style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"><br></div><div style="direction: ltr; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">**Unanswered emails</div><div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"><br></div><div style="direction: ltr; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">*Looked over email “Errors when submitting runs…” </div><div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"><br></div><div style="direction: ltr; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">*Roland will respond to “Issues running BNS…”</div><div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"><br></div><div style="direction: ltr; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">**Tickets</div><div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"><br></div><div style="direction: ltr; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">#2890 Getting an error within CarpetX number of points is zero - No one has seen an issue like this before</div><div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"><br></div><div style="direction: ltr; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">#2846 “Added PreSync support…” Steven will merge, </div><div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"><br></div><div style="direction: ltr; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">*Roland says "Multipole support was merged in"</div><div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"><br></div><div style="direction: ltr; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">**Tickets ready for review</div><div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"><br></div><div style="direction: ltr; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">*Peter will work on #2860</div>

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Meeting Minutes for 2025-09-25
by Leo Rosa Werneck 09 Oct '25

09 Oct '25

Hi all, Apologies for the delays. Here are the minutes for Sep 25. Cheers, Leo ============= Present: Lucas (Chair), Leo (Minutes), Peter, Steve, Keith, Roland, Zach, Johnny, Nikolai ** Agenda Items ** * BBH Gallery Example: - Peter added example for the Nov 2024 release. * Moving ET repositories to GitHub: - Still have an issue with user CactusCode. - Steve is on board (his opinion was pending). - Ticketing system can be challenging to move. - Check if possible for (to be) deleted Bitbucket repos to redirect to new GitHub ones. ** Unanswered Question on Mailing List ** * Questions About Old ET Releases and Bundled Libraries: - Not enough information given for a proper answer. * Issues Running BNS and GW150914 Example Simulations + Storing BSSN Variables - Roland will try to respond. * Inconsistency Warnings: Cores/Threads Mismatch [Leonardo cluster] - Not replied to yet. ** Open Tickets & Tickets for Review ** * #2888: Two scripts write to properties.ini without locking, leading to race condition. Roland proposed solutions in the ticket. * #2482: Simfactory uses cluster-dependent Slurm vars. * #0127: adding a copy of executable to restarts. * #1721: some clusters do not allow symlinks; keep copy * Zach suggested a sunset time for tickets that have not been touched for a long time (e.g., 2 years). Authors and commenters would be notified before tickets are closed. ------ 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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Einstein Toolkit Meeting Reminder
by users＠einsteintoolkit.org 08 Oct '25

08 Oct '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 06 Oct '25

06 Oct '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 2025-10-02
by keithdow＠keithdow.net keithdow＠keithdow.net 04 Oct '25

04 Oct '25

Minutes for the Einstein Toolkit Meeting, 20251002. https://docs.einsteintoolkit.org/et-docs/Main_Page#Weekly_Users_Call 9am CDT Thursdays Present: Peter D, Steve B, Deborah F, Roland H, Lucas S, Nikolai W, Zach E, Keith D. Chair: Peter D Minutes: Keith D * BBH gallery example – Peter finished his part. Zach will follow up. * Github <-- Bitbucket (Cactus Code) Roland will contact the owner of the location Cactuscode on Github to see if we can obtain it to transfer CC from Bitbucket to Github. * ETK has made progress in becoming part of the SPEC Benchmark. Roland and Steve. * GW150914 Roland is to run again. * An issue with 56 threads being specified, from Iosif. Roland will respond. * Open tickets sorted https://bitbucket.org/einsteintoolkit/tickets/issues?status=open&status=new… #2866 Problem while building the ET on MN5: OpenCL Roland “If you don’t need OpenCL I’d disable ExternalLibraries/OpenCL” #2889 Outflow uses incorrect ‘sf centroid’ There is a pull request. It is ready for review. Roland. #2597 Simfactory on Bridges2 No activity. Its from 2022 so it should be closed. #2888 Race condition writing properties.ini in simfactory No activity. #127 Restarts should have hard link to executable No activity. #1721 Simfactory’s test mechanism should use softlinks instead of rsync No activity. #1321 Collisions in executable cache directory No activity. #1798 add backtrace script to cactus utils No activity. #2706 Update default TwoPunctures partameters, or at least default parameters in BBH gallery example Zach is working on it. #2886 support cell centered directions when calling Fortran scheduled functions No activity. #2874 NRPyElliptic lacks regeneration instructions Zach is making progress. #2858 SF files for MN5 (was: Compiling Carpet X: Issues with PDESolvers) Not resolved. #2882 Running BBH with CarpetX with CPUs: High memory consumption and low performance ? #1847 FFTW3 fortran interface not working for system installation ? #2878 CarpetX: Add multipatch output support to Silo Waiting for review, Roland. #2764 PUGH tries to free memory not allocated by malloc Requires changes, Roland. #2848 updates to FLRWSolver No activity. #963 Improve McLachlan accuracy Peter is working on it. #1370 Provide a framework for simulation metadata ? #2877 ET_BHaHAHA Features Ticket Reminder for Zach. Work in progress. Needs formal review by Peter. #2855 Noise:X Improve noise generation in CarpetX No update. #2862 Update ‘SpacetimeX/Z4c’ robust stability parameter file. Needs review. #266 Peter to look at. #2364 Roland to look at closing. #2846 Steve to look at. #2814 Lucas to look at. #2179 Roland, needs review. #2786 Roland did work. Steve to review. New Item >From Roland. Volume integrals use a spherical surface. The issue is complicated. Zach and Roland to discuss. Next Meeting, Thursday, 9 October 2025. https://docs.einsteintoolkit.org/et-docs/Meeting_agenda

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Post Doctoral Associate - Computational Astrophysics, The University of Tennessee, Knoxville
by Mewes, Vassilios 03 Oct '25

03 Oct '25

Hi all, See the link below a Post Doctoral Associate - Computational Astrophysics opening at the nearby University of Tennessee in Knoxville. https://aas.org/jobregister/ad/56817693 Please share this with any interested candidates. Best wishes, Vassili

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Meeting minutes for 2025-09-11
by Deborah Ferguson 03 Oct '25

03 Oct '25

September 11, 2025 Minutes Chair: Roland Present: Peter, Deborah, Lucas, Roland, Leo, Keith, Beyhan, Zach, Nikolai, Steve BBH example * Peter checked the machine he ran it on and realized the data was purged. Will rerun it. Zach and Peter looking into modernizing the gallery example * Including updates to mchlachlan * Roland asks whether we can update the data stored on Zenodo * Uncertain answer * Could create a new Zenodo * Increase resolution * We want it to either be production ready or at least be easy to modify to make it production ready * Likely leave it at low resolution but then document to “change this value to XXX to make a production level run” Unanswered questions * Help with Spritz and FUKA * seems to have been solved * Roland will open a ticket to address it * add parameter in info file Open Tickets * 2706 * 2887 * Zach addressed Roland’s comments * Went through the changes live on the call * Roland approved it * 2886 * support cell centered directions in Fortran schedule functions * 2874 * NRPyElliptic lacks regeneration instructions * May need to address before new release depending on Zach’s NRPy changes * 2858 * Lucas working on it Tickets requesting review * 2887 * Roland just approved * 2878 * Roland still has to do AOB * Deborah shared video she made for LIGO press release * https://www.youtube.com/watch?v=hnzWNkjKkPU -------------------------------------- Deborah Ferguson Assistant Professor The University of Rhode Island

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Einstein Toolkit Meeting Reminder
by users＠einsteintoolkit.org 01 Oct '25

01 Oct '25

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Agenda for Thursday's Meeting
by users＠einsteintoolkit.org 29 Sep '25

29 Sep '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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Re: [Users] Inconsistency warnings: cores/threads mismatch [Leonardo cluster]
by Wei Sun 29 Sep '25

29 Sep '25

Hi Panayotis, Can you try specifying --procs, --num-threads, and --ppn-used at the same time? It looks like your machine defaulted to --ppn-used=112, which is not what you want, so you may need to overwrite it. You can check your allocation details in /output-000x/SIMFACTORY/properties.ini. A useful strategy is to verify whether the allocation matches these relations: ppn-used = numthreads * nodeprocsprocs = numthreads * numprocs = nodes * ppn-used Below is my understanding (I personally use numsmt=1, so threads = cores in my case). Please correct me if I’m wrong on them: nodes = number of nodes procsrequested = total number of cores requested (may not all be used, but you still occupy them on the HPC) ppn = number of cores per node requested (may not all be used) numprocs = total number of MPI ranks actually used nodeprocs = number of MPI ranks per node actually used procs = total number of cores actually used numthreads = number of OpenMP threads per MPI rank actually used ppnused = number of cores per node actually used numsmt = number of threads per physical core Best, Wei

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