Users May 2024

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Meeting minutes for 2024-05-16
by Leo Rosa Werneck 16 May '24

16 May '24

Hi all, Here are the minutes for today’s meeting (apologies for the delay). Cheers, Leo Chair: Zach Etienne Minutes: Leo Werneck Present: Sam Cupp, Leo Werneck, Steve Brandt, Peter Diener, Johnny Tsao, Lucas Sanches * NA ET School/Workshop @ LSU - June 3-7 (https://www.cct.lsu.edu/Einsteintoolkitworkshop2024). - There will be an excursion to LIGO, scheduled for the afternoon of June 5. - Looks ready to go! * ET Release - Will happen sometime in June - No updates on MultipoleX and NewradX. * Mailing List - Misyura Maxim is interested in obtaining the data for GW150914. Message will be forward to authors, as Zenodo doesn't contain all the data. - A student from Nanjing Normal University inquired about LORENE. Zach will forward the message to Josh. * Open Tickets - #2797: Leo addressed issue in NRPyElliptic. - #2796: Sam addressed issue in Baikal thorns with SIMD variables. Next Chair: Leo Next Minutes: Roland ------ Leonardo R. Werneck, Ph.D. Postdoctoral researcher Office EP 314 | Department of Physics | University of Idaho 875 Perimeter Dr. MS 0903 Moscow, ID 83844-0903, USA leonardo(a)uidaho.edu <mailto:leonardo@uidaho.edu> https://leowerneck.github.io <https://leowerneck.github.io/>

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Einstein Toolkit Meeting Reminder
by rhaas＠illinois.edu 15 May '24

15 May '24

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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Error while running the following par file on Jupyter notebook
by Zain khan 14 May '24

14 May '24

Below is the error /home/skhizer/simulations/BHM/output-0000/SIMFACTORY/RunScript: line 36: 13834 Killed /home/skhizer/simulations/BHM/SIMFACTORY/exe/cactus_sim -L 3 /home/skhizer/simulations/BHM/output-0000/BHM.par Below is the par file https://bitbucket.org/einsteintoolkit/einsteinexamples/raw/master/par/GW150…

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(no subject)
by Skhyzer Zaman 14 May '24

14 May '24

/home/skhizer/simulations/BHM/output-0000/SIMFACTORY/RunScript: line 36: 13834 Killed /home/skhizer/simulations/BHM/SIMFACTORY/exe/cactus_sim -L 3 /home/skhizer/simulations/BHM/output-0000/BHM.par

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(no subject)
by Zain khan 14 May '24

14 May '24

/home/skhizer/simulations/BHM/output-0000/SIMFACTORY/RunScript: line 36: 13834 Killed /home/skhizer/simulations/BHM/SIMFACTORY/exe/cactus_sim -L 3 /home/skhizer/simulations/BHM/output-0000/BHM.par

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(no subject)
by Zain khan 14 May '24

14 May '24

/home/skhizer/simulations/BHM/output-0000/SIMFACTORY/RunScript: line 36: 13834 Killed /home/skhizer/simulations/BHM/SIMFACTORY/exe/cactus_sim -L 3 /home/skhizer/simulations/BHM/output-0000/BHM.par

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(no subject)
by Skhyzer Zaman 14 May '24

14 May '24

/home/skhizer/simulations/BHM/output-0000/SIMFACTORY/RunScript: line 36: 13834 Killed /home/skhizer/simulations/BHM/SIMFACTORY/exe/cactus_sim -L 3 /home/skhizer/simulations/BHM/output-0000/BHM.par

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Agenda for Thursday's Meeting
by rhaas＠illinois.edu 13 May '24

13 May '24

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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Inquiry Regarding Parameter "N" in BBH Simulations
by Burgundy|•'-'•)و✧ 10 May '24

10 May '24

Dear Einstein Toolkit Team, I hope this email finds you well. I am writing to inquire about a specific parameter used in the simulation command for binary black hole (BBH) mergers in the Einstein Toolkit's Gallery. Recently, I have been experimenting with running BBH simulations using the following command: simfactory/bin/sim create-submit GW150914_28 --define N 28 --parfile par/GW150914/GW150914.rpar --procs 128 --walltime 24:00:00 In this command, I have noticed the use of the parameter "N" with a value of 28. However, when I changed the value of "N" to 20, I observed a significant reduction in the total runtime of the simulation, despite the fact that the merger time of the binary black holes increased from around 900M to 1000M. Could you please provide some clarification on the purpose of the "N" parameter in this simulation context? Additionally, could you explain why changing the value of "N" affects the runtime of the simulation and the merger time of the black holes? I would greatly appreciate any insights or explanations you could provide on this matter. Thank you very much for your time and assistance. Sincerely, Xinyue Bian(an undergraduate who has a bit interest in NR)

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Issue with npernode value in MPI
by Shamim Haque 1910511 10 May '24

10 May '24

Hi all, I am attempting ETK installation in KALINGA Cluster at NISER, India. This cluster has 40 procs per node and SLURM workload manager. I compiled ETK with gcc-7.5 and openmpi-4.0.5 (attached the machinefile, optionlist, submitscript and runscript). The installation is mostly alright, as I can run parfiles for test TOV and BNS mergers. I tried to run a simulation with procs=160 (nodes 4) and num-threads=1 but landed with this error (error file also attached): *+ mpiexec -n 640 -npernode 40.0 /home/kamal/simulations/dx25_r500_rg7_t30_p640-1_2/SIMFACTORY/exe/cactus_sim -L 3 /home/kamal/simulations/dx25_r500_rg7_t30_p640-1_2/output-0000/eos20_dx25_r500_rg7.par----------------------------------------------------------------------------Open MPI has detected that a parameter given to a command lineoption does not match the expected format: Option: npernode Param: 40.0This is frequently caused by omitting to provide the parameterto an option that requires one. Please check the command line and try again.----------------------------------------------------------------------------* Strangely, this error is not at all regular. Mostly, the error won't appear, and the simulation works just fine (with no changes being made in the scripts or simfactory command). In fact, this exact simulation has worked fine before. Since I am unable to find the source of this issue, I am also unable to recreate the error on my own. But it does kick in occasionally. My command for mpi execution in runscript looks like this: *time mpiexec -n @NUM_PROCS@ -npernode @(@PPN_USED@ / @NUM_THREADS@)@ @EXECUTABLE@ -L 3 @PARFILE@* If I replace * @(@PPN_USED@ / @NUM_THREADS@)@ *with a desired value, then the script always works. My simfactory command looks like this: *./simfactory/bin/sim create-submit dx25_r500_rg7_t30_p640-1_2 --parfile=par-smooth/scale_test/eos20_dx25_r500_rg7.par --queue=large1 --procs=640 --num-threads=1 --walltime=00:45:00* I am unable to understand how to solve this issue. Any help with this issue is appreciated. Please let me know if you need more information. Thank you. Regards Shamim Haque Senior Research Fellow (SRF) Department of Physics IISER Bhopal ᐧ

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