Users June 2023

users@lists.einsteintoolkit.org

13 participants
14 discussions

2-year postdoc position in numerical relativity in Milan, Italy
by Bruno Giacomazzo 08 Jun '23

08 Jun '23

At the University of Milano-Bicocca <https://en.unimib.it/> (Milan, Italy), we have an opening for two postdoc positions "on the development of algorithms, codes and computational strategies for theoretical physics, theoretical astrophysics, and high-energy physics". Candidates with experience in *numerical relativity* are very strongly encouraged to apply. Candidates at the end of their PhD can also apply. *The deadline is June 28*. The candidate is expected to start by October. The salary will be around 2000 EUR per month (after taxes) and the position is for 2 years. Reference letters are not needed and the application has to be submitted on line at https://pica.cineca.it/unimib/23a058/ See the call document at https://www.unimib.it/ateneo/gare-e-concorsi/cod-23a058 for the instructions and the details of the selection procedure. Make sure to attach also the pdf of the published version (journal version) of all your papers with the application. Candidates that will be selected for the interview will be interviewed on 05/07/2023 at 10:00 (Rome Time). When submitting their application, candidates shall enter their e-mail/telematic contact (Skype, Cisco Webex Meetings, Google Hangouts or Google Meet) for the configuration of the online interview. The astrophysics group at Milano-Bicocca <https://astro.fisica.unimib.it/> provides a vibrant environment with expertise covering all aspects of gravitational-wave astronomy, relativistic astrophysics, galactic dynamics, and numerical relativity. This is embedded in a wider astronomical context including both observational and experimental activities. Our group has tight connections with the LISA Consortium, the Virgo Collaboration, the Einstein Telescope Science Board, the European Pulsar Timing Array, and the Italian National Institute for Nuclear Physics (INFN) via the TEONGRAV national initiative. Staff members in Gravitational Waves include Colpi, Dotti, Gerosa, Giacomazzo <https://www.brunogiacomazzo.org/>, and Sesana. Milan <https://www.yesmilano.it/en>is a beautiful, international city in the north of Italy. Mountains and lakes are just around the corner. Art, culture, food, and nightlife are outstanding. The city hosts three international airports with worldwide connections. Please forward this email to potential candidates. Thanks, 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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Thorn setup taking too much time in cluster
by Shamim Haque 1910511 06 Jun '23

06 Jun '23

Hello, I am trying to run BNSM using IllinoisGRMHD on HPC Kanad at IISER Bhopal. While I have tested the parfile to be running fine on debug queue (1 node) and high memory queue (3 nodes), I am unable to run the simulation in a queue with 9 nodes (144 cores). The output file suggests that the setup of listed thorns is not complete within 24 hours, which is the max walltime for this queue. Is there a way to sort out this issue? I have attached the parfile and outfile for reference. Regards Shamim Haque Senior Research Fellow (SRF) Department of Physics IISER Bhopal ᐧ

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Today: NR community call at 9am Pacific / noon NYC / 5pm London / 6pm Berlin
by Nils Vu 05 Jun '23

05 Jun '23

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meeting minutes for 2023-06-01
by Roland Haas 01 Jun '23

01 Jun '23

Present: Zach, Keith, Roland, Steve, Leo, Peter SPECv8 contribution =================== * no specific news, progressing ET release coordinator search ============================= * had planned to include CarpetX and AsterX * no documentation exists for it yet * Roland estimates that CarpetX is not closer to inclusion ready than 6 months ago. CarpetX reviewers * paired coordinator approach was useful for Leo in the 2023_05 release * will pick this up again next week due to small number of participants Unanswered question =================== * https://lists.einsteintoolkit.org/pipermail/users/2023-May/008930.html Roland will forward similar answer about grid structure consistency * https://lists.einsteintoolkit.org/pipermail/users/2023-May/008935.html Roland will respond suggesting that a full C++11 stack is required Error message shown about missing http://lists.einsteintoolkit.org/pipermail/users/2023-June/date.html is likely due there not yet being a posting to the mailing list for June and the script cannot distinguish "no posting yet" from "server is down or cannot access the file". Galley examples =============== * Steve will update the BBH example (https://www.einsteintoolkit.org/gallery/bbh/index.html) ** Zach mentioned ticket https://bitbucket.org/einsteintoolkit/tickets/issues/2706/increase-twopunct… * Peter had added convergence plot to TOV example (https://www.einsteintoolkit.org/gallery/ns/index.html). Convergence order is between 1 and 2. Zach brought up the issue that gallery examples are typically very low resolution and one often has to increase resolution significantly observed for example good convergence. This typically clashes with the desire to keep the gallery examples small enough so that they can be easily run. Zach noted that the TOV example is not featured in the cycler on the main page. Steve and Zach had a discussion about how one could create a more visually interesting image using VisIt. Steve brought up work on openPMD reader in Python. Roland will work with summer student in summer to add mesh refined openPMD support to VisIt. Will meet with Steve and (NCSA) local visualization expert. Updated tickets =============== * https://bitbucket.org/einsteintoolkit/tickets/issues/2734/consider-adding-i… ** Steve mentioned current situation in CarpetX where storage is always one. ** Steve considers that he may be able to add auto-allocation of storage to the WRITE statements, READ would result in invalid data to read from * https://bitbucket.org/einsteintoolkit/tickets/issues/2733/twopunctures-cont… ** we should fix this Open topics =========== * Clang and Flang support. Zach mentioned benchmarks that have clang outperform gcc, asks about support for clang and flang in simfactory and the Einstein Toolkit. ** Roland says no clang support in the past due to lack of Fortran compiler. Steve and Zach point out that gfortran can be used and the there is now also flang. ** Roland mentions that there are "old" flang based on PGI and "new" flang based on llvm. Also AMD compiler and Cray compiler on Crusher / Frontier are llvm based, so are modern version of the Intel compiler suite. ** currently have not knowledge about clang / flang in the Linux known-architecture files, only in Darwin files for (older) clang Next Chair: Steve Next Minutes Taker: Leo 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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Users June 2023