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Agenda for Thursday's Meeting
by reminders＠einsteintoolkit.org 13 Feb '23

13 Feb '23

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 2023-02-09
by Steven R. Brandt 09 Feb '23

09 Feb '23

Present: Peter, Steve, Roland, Keith, Zach, Leo, Sam, Gabriele Bozzola, Yosef UNAM workshop - Untarring problem at scale - Better messages from Simfactory - Adding Kuibit version to update - New page: https://docs.einsteintoolkit.org/et-docs/Tutorial_Planning May Release - Testing: Need to have a list of critical systems, add Delta. Maybe add Anvil? Send a message out to the user's list to help with testsuites? http://einsteintoolkit.org/testsuite_results/index.php Gabriele: Expanse Peter: Sunrise Roland: Summit, Corey, Frontera, Crusher Steve: Docker containers, LSU systems Leo & Sam: National lab systems Maria: Thornyflat? (last time run by Anush) - Additions that don't have reviewers - https://lists.einsteintoolkit.org has no good cert Steve pinged IT support Next meeting: Chair: Leo Minutes: Yosef if makes it, Sam otherwise Yosef suggests that maybe put names in a ring?

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Einstein Toolkit Meeting Reminder
by reminders＠einsteintoolkit.org 08 Feb '23

08 Feb '23

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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2023 North American Einstein Toolkit School and Workshop (hybrid)
by Yosef Zlochower 08 Feb '23

08 Feb '23

The 2023 North American Einstein Toolkit School and Workshop will be held at the Rochester Institute of Technology on July 17 through July 21. This will be a hybrid conference with talks and participants both in-person and over zoom. 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. Registration will open on May 1, 2023 and remain open until June 17, 2023. More details to follow.

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Agenda for Thursday's Meeting
by reminders＠einsteintoolkit.org 06 Feb '23

06 Feb '23

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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Llama - Interpatch boundaries found
by Samuel Tootle 03 Feb '23

03 Feb '23

All: I've been playing with the GW150914 gallery file and testing the setup with different mass ratio BBH initial data given how fast the simulations are using the multipatch setup. I made some modifications to the gallery script to match my setup (the final par is attached), however, I keep getting an odd error: > INFO (Coordinates): Setting up global coordinates for thornburg04. > INFO (Coordinates): Setting local coordinates: Thornburg04 > WARNING level 0 from host r36c1t1n1.ib0.hawk.hww.hlrs.de process 0 > while executing schedule bin Interpolate2Test, routine > Interpolate2::Interpolate2TestInit > in thorn Interpolate2, file > /zhome/academic/HLRS/xfp/xfpstoot/lib/FreeTHC2020_new/Cactus/arrangements/Llama/Interpolate2/src/test.cc:77: > -> Refinement level 1 contains inter-patch boundaries; this is > currently not supported The current setup is looking at a BBH setup with q = 4. I had the same problem with q=2 as it seemed some of the refinement levels from the primary came close to one of those from the secondary so I staggered them more by making the refinement levels for the primary increase by factors of two and a factor of 1.5 for the secondary. However, I am getting the same error even when using this new staggering setup. Looking at the grid output (see run.log) I don't see where this "inter-patch" issue is showing up and increasing verbosity didn't shed further light from my optic. Before dedicating more time, I wanted to see if maybe the more experienced with these thorns might have some insight as to what the problem may be. Cheers, Samuel

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meeting minutes for 2023-02-02
by Roland Haas 02 Feb '23

02 Feb '23

Present: Roland, Peter, Sam, Alireza, Aviral, CHeng-Hsin, Gabriele, Helvi, Jay, Keith, Leo, Liwei, Steve, Yosef, Zach ET release contributions: * FB Moncrief disk ** Roland reported on status, still rough around the edges ** Issues reported with underlying thorn that need to be fixed first ** Zach will look into thorn issues ** UIdaho is starting up a group of students that are working on creating cvisualizations for this * READ / WRITE for Baikal ** updates to Baikal, mostly regular development ** removal of checkpoint / recovery for RHS variables which do not need to be checkpointed ** removes an no-op ApplyBCs ** Leo will review * Elliptica reader ** spectral XCTS solver, arbitrary spin for fluid body, mixed systems possible ** Alireza has reader public for BAM, ID already exists, solver will be public as well ** would want to change so that it no longer uses a temporary ** please keep release managers (Leo, Sam) in the loop * FUKA reader ** Samuel could not make it ** ticket has some description of what is available ** used in multiple publications ** code is used in publications * CarpetX inclusion ** too large an inclusion and not yet in state ready to include ** will start review now, aiming for inclusion in November ** 3 reviewers would be great ** Steve, Zach ** UIUC strong gravity group might be interested to review (porting physics code) * AsterX inclusion ** depends on CarpetX so postponed * IllinoisGRMHD, NRPyEOS, NRPyLeakage ** effectively one large update to IllinoisGRMHD that changes con2prim (Palenzuela, Newman&Hamlin, methods from Siegel et al. paper) ** support tabulated EOS, interpolators ported from O'Conner et al. cleaned up slightly ** specific EOS generated depends on compile time code generation ** NRPyLeakage is simple leakage code based on Ruffert prescription ** both NRPyEOS and NRPyLeakage are independent of IllinoisGRMHD ** used in publication, documented in jupyter notebooks ** Gabriele asked about ID thorn for TOV stars, IllinoisGRMHD updates will have a new TOV ID generator to produce EOS for this ** Sam will review IllinoisGRMHD * particle_tracerET ** major bugfix earlier in 2022 that affected interaction with mesh refinement ** this new change adds more output formats and more data that can be output ** currently this custom format is the default ** may announce change of default output behaviour * TwoPunctures_BBHSF and NPScalars_SF ** produces initial data for black holes and a massive scalar field ** part of Canuda ** NPScalar_SF computes Newman-Penrose scalars including contributions from these massive scalar fields ** Zach is asking if it would be possible to instead extend the existing TP thorn. Helvi explained that some changes go beyond adding a term to Tmunu since scalar field scale differently. ** Gabriele mentioned that TP was at one point extended to support arbitray scaled matter field, but that this functionality was never really well documented and seems tightly coupled to TOVSolver ** Gabriele brought up issue that default values of parameters in TwoPunctures are no longer always the best, and that using Taylor expansion for data interpolation is no longer required (for speed reasons). In the new thorn the defaults could be modernized. * kuibit update to 1.4 ** mostly library update ** impossible to list pip dependencies that allow use with Python 3.7 ** can use kuibit 3.6 on older clusters, "pip install kuibit" will install the newest version available chair next week: Sam minutes next week: Steve 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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Fwd: Scientific Programmer Position at the AEI in Potsdam
by Helvi Witek 02 Feb '23

02 Feb '23

FYI Best wishes, Helvi --------------------------------------------- Dr. Helvi Witek Assistant Professor Department of Physics University of Illinois at Urbana-Champaign 247 Loomis Lab 1110 W Green St Urbana, IL 61801 --------------------------------------------- -------- Forwarded Message -------- Subject: Scientific Programmer Position at the AEI in Potsdam Date: Thu, 2 Feb 2023 08:20:49 +0100 From: Harald Pfeiffer <harald.pfeiffer(a)aei.mpg.de> Reply-To: Harald Pfeiffer <harald.pfeiffer(a)aei.mpg.de> To: consortium(a)lisamission.org Dear members of the LISA collaboration, The "Astrophysical and Cosmological Relativity" division at the Max Planck Institute for Gravitational Physics (Albert Einstein Institute, AEI) in Potsdam is looking for a highly motivated, talented Scientific Programmer who will actively engage in the computational research activities carried out in the division. The position will be at the level of a staff scientist; the appointment will initially be for 3 years, with the possibility of becoming permanent afterwards. In exceptional cases, the position can be made permanent sooner, or from the beginning. Candidates are encouraged to apply as soon as possible. The deadline for full consideration is February 20, 2023, including reception of reference letters. The anticipated start date of the positions is Fall 2023. Applications will be considered until the position is filled. The complete announcement, job description, and instructions how to apply can be found here: https://www.aei.mpg.de/991039/scientific-programmer <https://urldefense.com/v3/__https://www.aei.mpg.de/991039/scientific-progra…> Best wishes, Harald Pfeiffer

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Einstein Toolkit Meeting Reminder
by reminders＠einsteintoolkit.org 01 Feb '23

01 Feb '23

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ET_2023_05 Release: Voting For New Contributions
by Leonardo Werneck 31 Jan '23

31 Jan '23

Dear all, During this week’s ET telecon (Feb. 2, Thursday, 9 AM US Central Time) we will be voting on whether or not to accept the new proposed contributions in the next ET release. Here is an updated list of new contributions (for links, see https://docs.einsteintoolkit.org/et-docs/Meeting_agenda#2023-02-02): - Fishbone-Moncrief gallery example Ticket #2687 - Baikal read/writes support Ticket #2693 - Elliptica reader (and solver timeline) Ticket #2619 -- proposed by Alireza Rashti - FUKA reader announcement and Ticket #2692 - CarpetX pre-release and Ticket #2694 - AsterX pre-release and Ticket #2695 - IllinoisGRMHD major update and feature enhancement Ticket #2689 - NRPyEOS Ticket #2688 - NRPyLeakage Ticket #2689 - Minor feature improvement to particle_tracerET Ticket #2691 - TwoPunctures_BBHSF and NPScalars_SF in Canuda/Scalar for binary black holes + scalar fields Ticket #2697 - New kuibit version Ticket #2696 Please make sure to attend the next telecon to voice your opinion, particularly if you are an author of one or more of the above. Sincerely, The Release Team

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