Users March 2025

users@lists.einsteintoolkit.org

13 participants
23 discussions

GW150914 par file without Llama?
by Rhiannon Silva 02 Apr '25

02 Apr '25

Hi, I need a parameter file similar to the GW150914 binary black hole example but without the Llama patches. Does anyone already have something like that I could use? If not, would it be a good idea for me to start from the qc0-mclachlan example and adapt that to my needs? It seems like that might be easier than trying to work backward from GW150914.par? Is there anything old/outdated in the qc0-mclachlan example which I should be aware of? Also, can anyone tell me why qc0-mclachlan uses 3 refinement centres (CarpetRegrid2::num_centres = 3) and not 2 as in GW150914? Thanks, Rhiannon.

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Agenda for Thursday's Meeting
by rhaas＠illinois.edu 31 Mar '25

31 Mar '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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Building the Einstein Toolkit in MN5: problem with SSHT
by Samuel Gómez Gómez 28 Mar '25

28 Mar '25

Hi again. While compiling the toolkit on the Marenostrum 5 cluster, I encountered the error shown in the attached screenshot. The build process seems to attempt downloading the SSHT thorn from the internet, but this cluster does not have an internet connection. I have tried compiling it manually and adding the path, but the package still insists on downloading it online. I would appreciate any help. Thanks!

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meeting minutes for 2025-03-27
by Steven Brandt 27 Mar '25

27 Mar '25

Present: Peter, Steve, Zach, Leo, Keith, Maxwell Rizzo, Lucas, Johnny Tsao Chair: Peter Minutes: Steve Release: Z4c: No news. Assume not ready for reviews. BHaHAHA: Peter hasn't had time to start review CCE code to hook up Spectre: Lucas got access to the code yesterday and has skimmed it. FLRWSolver modules: Zach will review, hasn't started yet. ET US Summer School Austin: Johnny Tsao says registration is still not open. Mailing list: GW150914 par file without Llama? Zach released a parfile for that. Tickets: 2861: Running qc0 with CarpetX. Lucas thinks he solved most of their problems. We don't have an official thornlist that does this because they aren't part of the release. Their cluster can't have access to the internet. Hoping to ask Roland how to fix. 2633: Peter has added something about the documentation and is looking for a reviewer. 2862: Lucas has a fix for the robust stability test. Looking for a reviewer. 2625: Please review. 2052: Something for Steve to fix. 2856: Something else for Steve to fix. 2855: NoiseX proposed by Lucas. Ongoing discussion between Lucas and Roland. 2172: Peter needs to update the gallery examples.

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Einstein Toolkit Meeting Reminder
by rhaas＠illinois.edu 26 Mar '25

26 Mar '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. ** DAYLIGHT SAVING TIME WARNING ** Please note that the US / EU has already / not yet transitioned to / from daylight saving time. The phone call will be at 15:00 Central EU time. https://docs.einsteintoolkit.org/et-docs/Main_Page#Weekly_Users_Call --The Maintainers

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Agenda for Thursday's Meeting
by rhaas＠illinois.edu 24 Mar '25

24 Mar '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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Fwd: Dennis Sciama Research Fellowship, ICG, Portsmouth
by Helvi Witek 24 Mar '25

24 Mar '25

Dear all, please see below information about the Dennis Sciama Research Fellowship at the Institute of Cosmology and Gravitation (ICG) at the University of Portsmouth. Best wishes, Helvi --------------------------------------------- Dr. Helvi Witek Associate Professor Department of Physics University of Illinois at Urbana-Champaign 247 Loomis Lab 1110 W Green St Urbana, IL 61801 --------------------------------------------- Dear Colleagues, if you are a postdoc, please consider the following, otherwise please pass this on to whoever may be interested, in UK or abroad. I would be personally interested in a NR DS-Fellow interested in cosmological applications. But leaving myself aside, at ICG we have a strong GW group (mostly data but not only) and Tessa Baker and Kazuya Koyama interested in modified gravity, and David Wands interested in inflation and early universe in general. For any question, feel free to contact me or any of my colleagues. Best regards, Marco Bruni > Begin forwarded message: > > *From: *David Wands <0000c56f12d9f645-dmarc-request(a)JISCMAIL.AC.UK> > *Subject: **Dennis Sciama Research Fellowship, ICG, Portsmouth* > *Date: *24 March 2025 at 16:51:36 GMT > *To: *UKCOSMO(a)JISCMAIL.AC.UK > *Reply-To: *David Wands <david.wands(a)PORT.AC.UK> > > We are pleased to announce our eighth Dennis Sciama Research > Fellowship at the Institute of Cosmology and Gravitation (ICG) at the > University of Portsmouth. This prestigious fellowship is aimed at > excellent researchers in cosmology, gravitation and astrophysics who > are developing research independence. The successful candidate will > have demonstrated excellence in research, complementing and extending > the existing ICG research interests and expertise. Over the course of > the fellowship, they will be expected to develop their own programme > of high impact research and innovation and help attract external > funding to the ICG. During the fellowship we will support the > successful candidate in applying for permanent academic positions and > for fellowships that lead into permanent roles. > > For details of how to apply see: > https://mss.port.ac.uk/ce0732li_webrecruitment/wrd/run/etrec179gf.open?WVID… > <https://urldefense.com/v3/__https://mss.port.ac.uk/ce0732li_webrecruitment/…> > > /Closing date: 13th April 2025/ > > Flexible and hybrid working may be available for this role. This can > be discussed at interview. > > This is a fixed term appointment until 31st August 2028. We may be > able to support a fractional appointment. > > Interviews are anticipated to be held in early May. > > For an informal discussion about the role please contact Ian Harry via > email atian.harry(a)port.ac.uk (or feel free to contact to any ICG staff > member about the role). > > > > ------------------------------------------------------------------------ > > To unsubscribe from the UKCOSMO list, click the following link: > https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=UKCOSMO&A=1 > <https://urldefense.com/v3/__https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?…> > ########################################################################### Marco Bruni Associate Professor in Cosmology and Gravitation Institute of Cosmology and Gravitation University of Portsmouth Dennis Sciama Building Burnaby Road Portsmouth, PO1 3FX United Kingdom tel: +44-23-9284-3136 http://www.icg.port.ac.uk <https://urldefense.com/v3/__http://www.icg.port.ac.uk/__;!!DZ3fjg!--fArlQhn…> ########################################################################### ########################################################################### Marco Bruni Associate Professor in Cosmology and Gravitation Institute of Cosmology and Gravitation University of Portsmouth Dennis Sciama Building Burnaby Road Portsmouth, PO1 3FX United Kingdom tel: +44-23-9284-3136 http://www.icg.port.ac.uk <https://urldefense.com/v3/__http://www.icg.port.ac.uk__;!!DZ3fjg!--fArlQhnZ…> ###########################################################################

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Associate Professor and Professor positions at the University of Southampton
by Adam Pound 21 Mar '25

21 Mar '25

Dear colleagues, The School of Mathematical Sciences at the University of Southampton is seeking to make up to two appointments at the Associate Professor or Professor level. We welcome applicants from any relevant area, including gravitational-wave data analysis, large-scale numerical relativity, quantum information, applications of machine learning and artificial intelligence to theoretical physics and string theory, and other areas of mathematics and modelling. More information and the application procedure are available at https://jobs.soton.ac.uk/Vacancy.aspx?ref=3034925PJ . The deadline for applications is 16 April. Interested candidates can contact Nils Andersson (n.a.andersson(a)southampton.ac.uk) or the head of department, Jacek Brodzki (j.brodzki(a)soton.ac.uk). Best wishes Adam Pound

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No Einstein Toolkit call today
by Roland Haas 20 Mar '25

20 Mar '25

Hello all, Due to the ongoing APS April meeting, there will not be an Einsteun Toolkit call today. Yours, Roland

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Problem in installing Einstein Toolkit
by Anisha Sharma 19 Mar '25

19 Mar '25

Hello Sir, I was trying to install Einstein Toolkit with the reference to the steps provided in the github page " https://github.com/einsteintoolkit/jupyter-et/blob/master/tutorial-server/n… "... Its downloaded successfully upto step: "*Configuring SimFactory for your machine*" but at the last step: "*Building the Einstein Toolkit*" with a command "*%%bash* *./simfactory/bin/sim build -j2 --thornlist thornlists/einsteintoolkit.th <http://einsteintoolkit.th>*" there is a problem every time i try to run it. I am trying to install it from the last 5-6 days. I even tried to have some help from ChatGPT but not able to fix it up. I am using ubuntu virtually in my window 11. The Error shows: "*make[1]: *** [/home/anisha/Cactus/Cactus/lib/make/make.configuration:150: /home/anisha/Cactus/Cactus/exe/cactus_sim] Error 1* *make: *** [Makefile:265: sim] Error 2*" And while running the sample code of hello world the output is : "*Warning: Current Working directory does not match Cactus sourcetree, changing to /home/anisha/Cactus/Cactus* *Parameter file: /home/anisha/Cactus/arrangements/CactusExamples/HelloWorld/par/HelloWorld.parError: Executable /home/anisha/Cactus/Cactus/exe/cactus_sim for configuration sim does not exist or is not readable* *Aborting Simfactory.*".... obviously because kit isn't installed successfully. I have attached the copy of my notebook in the pdf format for your reference. I greatly appreciate your help. with regards, Anisha Sharma

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