Users December 2022

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16 discussions

Einstein Toolkit Meeting Reminder
by reminders＠einsteintoolkit.org 07 Dec '22

07 Dec '22

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 reminders＠einsteintoolkit.org 05 Dec '22

05 Dec '22

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: [nr-community-call] Today: NR community call at 9am Pacific / noon NYC / 5pm London / 6pm Berlin
by Helvi Witek 05 Dec '22

05 Dec '22

Dear all, sorry, this should have been the announcement. please join the NR community call today at 11am CST. See Nils' announcement below. 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: [nr-community-call] Today: NR community call at 9am Pacific / noon NYC / 5pm London / 6pm Berlin Date: Mon, 5 Dec 2022 08:00:00 -0800 From: Nils Vu <nils.vu(a)black-holes.org> To: nr-community-call(a)black-holes.org Dear Numerical Relativists, We'll have our NR community call *today, Dec 5th, *at*9am LA / noon NYC / 5pm London / 6pm Berlin *in this Zoom room: https://mpi-aei.zoom.us/j/98949704345 Our speakers today are *Alex Pandya (Princeton) *and*Nikolas Wittek (AEI Potsdam / SXS)*. - Feel free to circulate this information within the NR community. - Please subscribe to our mailing list <https://urldefense.com/v3/__https://groups.google.com/u/1/a/black-holes.org…> to receive info on the community calls in the future (or send a short message to nr-community-call+subscribe(a)black-holes.org to subscribe) and join our Slack <https://urldefense.com/v3/__https://join.slack.com/t/generalrelativity/shar…> for discussions (channel: #nr-community-call <https://urldefense.com/v3/__https://generalrelativity.slack.com/archives/C0…>). - Please sign up for a slot <https://urldefense.com/v3/__https://docs.google.com/forms/d/e/1FAIpQLSfoCnn…> in the schedule to speak at one of the community calls: https://github.com/sxs-collaboration/nr-community-call/wiki <https://urldefense.com/v3/__https://github.com/sxs-collaboration/nr-communi…> Looking forward to seeing you all later, Nils -- You received this message because you are subscribed to the Google Groups "NR community call" group. To unsubscribe from this group and stop receiving emails from it, send an email to nr-community-call+unsubscribe(a)black-holes.org.

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Fwd: Urgent: Forward NR community call announcement to ETK list
by Helvi Witek 05 Dec '22

05 Dec '22

Dear all, please join the NR community call today at 11am CST. See Nils' announcement below. 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: Urgent: Forward NR community call announcement to ETK list Date: Mon, 5 Dec 2022 08:06:57 -0800 From: Nils Vu <nils.vu(a)aei.mpg.de> To: Helvi Witek <hwitek(a)illinois.edu> Hi Helvi, could you forward the NR community call announcement that I just sent a few minutes ago to the ETK list? Maybe there’s a way to do that automatically? Cheers, Nils

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research associate position at Milano-Bicocca
by Bruno Giacomazzo 05 Dec '22

05 Dec '22

Dear All, we have opened a 3 year research position (RTDA contract) in computational astrophysics (with emphasis on gravitational wave sources) at the University of Milano-Bicocca. The deadline for applications is *December 29* . This position is funded through the new Italian National HPC Center created with the PNRR funds (EU Recovery funds). The starting date should not be later than May 2023, but it can be as early as February 2023. The position is for 3 years and it could be renewed for another 2 years (pending funding). The researcher will be hired as a full time public employee with all benefits (health insurance, pension fund, sick and maternity/paternity leave). The researcher will also have a teaching load of a minimum of 20 to a maximum of 40 hours of lectures per year (our master in astrophysics is in English). For those that did not work in Italy in the last 3 years, the net salary (i.e., after taxes) should be ~2400 EUR per month. Otherwise it should be ~1800 EUR per month. In both cases there is a one month bonus in december (i.e., one gets paid 13 months per year). The original text of the call can be found here: https://www.unimib.it/ateneo/gare-e-concorsi/2022-rtdapnrr-077-n-3-posti-ri… The application has to be submitted via this link: https://pica.cineca.it/unimib/2022-rtdapnrr-077/ The position code is 2022-RTDAPNRR-077/03 (Dipartimento di Fisica "G. Occhialini", SSD FIS/05, SC 02/C1). Unfortunately the text of the call is available only in Italian at this moment. Please see below for some basic information in English. *Please note that you need to have a PhD to apply for this position.* More information on the astrophysics group in Bicocca can be found here: https://astro.fisica.unimib.it/ Best regards, Bruno Giacomazzo ---- The online system allows users to save the application in a draft mode. So you can start filling the online application, then save it as a draft, and then continue on another day. You will need to submit, via the online system, also 12 refereed publications that will be evaluated by the selection committee. You should upload the pdf versions published by the journal. When filling the online application, please note that your CV will be evaluated in the following way (each candidate will get a certain number of points and this is how the ranking will be done): a) Research doctorate or equivalent obtained in Italy or abroad; (up to 5 points) b) any teaching activity at university level in Italy or abroad; (up to 5 points) c) documented training or research activity at qualified Italian or foreign institutes; (up to 7 points) d) organization, management and coordination of national and international research groups, or participation in themselves; (up to 4 points) e) speaker at national and international congresses and conferences; (up to 6 points) f) national and international awards and recognitions for research activities; (up to 1 point) Once the application is completed, you will be requested to download the pdf of the application that is generated by the system, sign it, and upload it back into the system. Unfortunately the system will also ask for the online payment of 25.82 EUR for completing the submission. I'm really sorry about all this bureaucracy, but these are considered public employee positions. Reference letters are not required. -- Prof. Bruno Giacomazzo Department of Physics University of Milano-Bicocca Piazza della Scienza 3 20126 Milano Italy email: bruno.giacomazzo(a)unimib.it phone: (+39) 02 6448 2321 web: http://www.brunogiacomazzo.org --------------------------------------------------------------------- There are only 10 types of people in the world: Those who understand binary, and those who don't ----------------------------------------------------------------------

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Meeting minutes for December 1st 2022
by Bruno Giacomazzo 01 Dec '22

01 Dec '22

Dear All, here are the minutes from today's meeting. Sorry if I missed someone or something. Present: Bruno Giacomazzo, Steven Brandt, Roland Haas, Peter Diener, Beyhan, Artectek, Keith Dow, Zachariah Etienne, Gabriele Bozzola, Leo Rosa Werneck, Allen Wen, Yosef Zlochower Chair: Leo Minutes: Bruno *ET release recap Roland provided a recap. The delay was due to the addition of an Intel Compiler 19 workaround for GRHydro (it seems that there is a compiler bug that cannot recognize properly that arrays were initialized). In the future we also need a release co-chair because it is becoming too much work for just one person. It was a very large release with 3 new contributions and a large list of contributors with many students contributing to the testing. Steve thinks we need to better recognize the work done by the release chair since it is a lot of work. Moreover there is always some missing point in the documentation regarding how to manage a new release. Zach agrees with what Steve said. We all thank Roland for his work for this release. **missing tests in the new release Roland pointed out that Canuda does not have a testsuite. We did not notice it during the release. *Next ET release chair search The search has begun. Any volunteers? Leo is thinking about it, but he is looking for a co-chair *Open tickets: #2670 <https://bitbucket.org/einsteintoolkit/tickets/issues/2670/refinement-prolon…> (opened by Artectek): it seems to be a failure in the Carpet grid division algorithm happening after regridding, but Roland does not have an idea of what is causing this. Nobody has seen this error before. Roland pointed out that the sum of dens reported in INFO is ~1e-4 while the maximum of dens in ~1e-3, but this may be OK since the sum is the sum of the values weighted by the grid spacing (to get the integral one would need to multiply the sum by the coarsest grid spacing). Roland suggests having a look at the output for dens. Artectek says that he did have a look at the output using the script in the gallery example and the NSs are still there. Artectek's simulation is based on the BNS gallery example. Gabriele suggests starting from the gallery example and changing only one parameter at a time. Artectek said that he only changed the EOS and the grid setup for the initial separation of the NSs. Roland suggests to run with the same EOS of the gallery example (gamma law) and just change the grid setup. If this works then Gabriele suggests trying with a piecewise polytropic EOS. Roland suggests producing a checkpoint at the iteration before the error appears so that by looking at the checkpoint maybe we can understand what is happening. Gabriele also noted that the memory requirement for the run is 11 GB, which seems to be very low for a BNS. It could be that there are too few points maybe shared through too many MPI processes (and therefore each MPI may have too small grids). Gabriele and Roland therefore suggest running it on only one node as a first test. Leo also suggests checking that the NS is fully inside the finest grid (but this would probably give errors in C2P and not in regridding, since regridding is done also if the NS was fully contained). #2671 <https://bitbucket.org/einsteintoolkit/tickets/issues/2671/add-instuctions-f…>: Roland says that it would be useful to make it more clear to users which information to share when encountering problems with the Einstein Toolkit. #2665 <https://bitbucket.org/einsteintoolkit/tickets/issues/2665/two-open-pull-req…>: it was opened by Gabriele. There seems to be a couple of typos in the documentation of the TOV Solver and there was a pull request to fix it. *Call for new contribution proposals Fishbone-Moncrief gallery example Elliptica reader (and solver timeline) ticket FUKA reader announcement Roland said that Elliptica and FUKA should be included in the next release and we need to ping their authors. The Fishbone-Moncrief gallery example was done recently and it should be included. *simfactory website repo server migration Steve said it is going to be moved from svn to git. *ET Jenkins replacement status update Roland said that we used to run tests on Jenkins, but there was the idea to move to git actions. Some students worked on this and it seems to be working fine. See einsteintoolkit.github.io/tests/ (it runs on github resources that we can access for free since the einstein toolkit has an academic license and therefore we do not need to manage virtual machines by ourselves as we do now). Github action also builds documentation every day. *ET seminar and hackathon search Roland says that we should start these again. Any volunteers for seminars? What about a tutorial on NRPY Elliptic? *NRPy+ plans Zach said that Steve and Zach's group would like to get together for future plans since Steve has a very nice fork of NRPY that improves users' interaction. Zach also has his own fork with some infrastructure improvements. Steve is also looking for a student to work on NRPY (see Steve's announcement on the einstein toolkit mailing list). *EOS plans call recap postponed to next call since we ran out of time *SPECv8 update postponed to next call since we ran out of time *Unanswered questions postponed to next call since we ran out of time *tickets ready for review: postponed to next call since we ran out of time Next call (December 8): Chair: Peter Minutes: Steve Cheers, Bruno -- Prof. Bruno Giacomazzo Department of Physics University of Milano-Bicocca Piazza della Scienza 3 20126 Milano Italy email: bruno.giacomazzo(a)unimib.it phone: (+39) 02 6448 2321 web: http://www.brunogiacomazzo.org --------------------------------------------------------------------- There are only 10 types of people in the world: Those who understand binary, and those who don't ----------------------------------------------------------------------

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