Users January 2023

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10 participants
21 discussions

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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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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Agenda for Thursday's Meeting
by reminders＠einsteintoolkit.org 30 Jan '23

30 Jan '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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prerequisites of ET installation
by Panagiotis Iosif 27 Jan '23

27 Jan '23

Dear ET users, I am following the CactusTutorial.ipynb notebook to install ET in a workstation in my institute. Among the prerequisites there is the "python-is-python3" package which symlinks /usr/bin/python to python3. The workstation has a slightly older Ubuntu version installed (18.04 LTS) and does not find this particular package for installation. I do not have rights to perform a system upgrade / or install a newer Ubuntu version. Is it safe to omit this package from the prerequisites? Are there elements in ET that are possible to "break" if this is left out? Is there a workaround, for example should I do the symlink to python3 manually? Thanks and best regards, Panagiotis Iosif ------------------------------------------------------------- Dr. Panagiotis Iosif postdoctoral researcher email: piosif(a)auth.gr; paniosif(a)gmail.com Section of Astrophysics, Astronomy and Mechanics Department of Physics Aristotle University of Thessaloniki 54124, Thessaloniki, Greece -------------------------------------------------------------

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meeting minutes for 2023-01-26
by Steven R. Brandt 26 Jan '23

26 Jan '23

Present Roland, Steve, Peter, Sam, Cheng-Hsin Cheng, Leo, Zach, Alexandru Dima, Helvi, Keith Dow Contribution propoals for the next release were discusssed. Next week, decisions will be made about what will be included. Roland suggests that each contribution have a champion and a link that people can look at. CarpetX AsterX in the next release? An email will be sent out to reach out to the contributors. SSL Cert for the mailing list archives. The URL for the testing system will probably work by next. The first version of the ET swag shop is up: https://www.etsy.com/shop/EinsteinToolkitShop Please send comments / thoughts / suggestions to sbrandt(a)cct.lsu.edu ET Meeting in Europe June 19-23 at the University Aveiro in Portugal. The testsuite system needs a reviewer. Majority of CCTK_REAL is used in the ET, but a float would break many of the thorns. We should start testing this feature. There is a CCTK_REAL8. CCTK_PRECISION can be set in the OptionList. Various tickets are ready for review. Didn't look at all of these. https://bitbucket.org/cactuscode/cactus/pull-requests/145/implement-scalars… Next week: Peter Diener, famed in song and story, shall be chair! The Grand and Glorious Roland Haas shall be the minute taker! Black Holes on Star Trek: https://www.tvfanatic.com/quotes/one-problem-at-a-time/

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Einstein Toolkit Meeting Reminder
by reminders＠einsteintoolkit.org 25 Jan '23

25 Jan '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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European Einstein Toolkit Meeting 2023, Aveiro, Portugal (1st announcement)
by Miguel Zilhão 24 Jan '23

24 Jan '23

The next European Einstein Toolkit Meeting will take place on 19-23 June 2023 at the University of Aveiro, Portugal. The first two days of the meeting will include lectures and tutorials geared towards new users of the toolkit. The following three days will focus on the status and future development of the toolkit, including scientific talks as well as dedicated discussion sessions. The meeting will be fully in-person, with no online component. This is the first announcement for you to save the dates. A second announcement will follow shortly with more details about the meeting and on how to register. Registration is expected to open in early March and there will be no registration fee. You are welcome to send questions or informal inquiries to Miguel Zilhão at mzilhao[AT]ua.pt We look forward to welcoming you in Aveiro. Best regards, The organising committee.

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

23 Jan '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 2023-01-19
by Roland Haas 19 Jan '23

19 Jan '23

Present: Roland, Leo, Cheng-Hsin, Helvi, Keith, Sam, Steve, Yosef, Zach new ET modules proposed * went over the prior existing suggestions * TwoPunctures extended to add extra fields ** not yet fully sure if will have publication published by the time of the inclusion ** Sam and Leo pointed out that this is not a strict requirement but might be good to do to avoid others using the code for the planned publication * will vote on new features 2 weeks from now (Feb 2nd) NR school at UNAM * Helvi Witek is in contact with Miguel Alcubierre to set up a summer school on NR at UNAM * will try and use ET tutorial server * will contact Steve Conference announcement * Steve is co-organizing an adaptive many-tasks conference https://amte2023.stellar-group.org in Europe (Cyprus) in summer as part of EuroPar (https://2023.euro-par.org/) * adaptive many tasks systems would be similar to HPX, Charm++, UIntah, etc. that have multiple small tasks that are scheduled in parallel * audience is users and developers of these systems SSL certificate for lists.einsteintoolkit.org * Steve will contact LSU IT to ask to have the certificate update Updates to agenda page * agenda page for old agendas (pre 2017) has been separated from main agenda page Steve is collection pictures related to past ET release * will be available on mugs in Etsy store Job openings: * the AEI in Potsdam is advertising for a scientific programmer position https://hyperspace.uni-frankfurt.de/2023/01/18/scientific-programmer-positi… No unanswered emails on the mailing list No new interesting updated tickets. No new tickets to review Next week chair: Sam Next week minutes: 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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Einstein Toolkit Meeting Reminder
by reminders＠einsteintoolkit.org 18 Jan '23

18 Jan '23

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