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Error in exe/cactus_sim
by Rishank Diwan 27 Apr '20

27 Apr '20

Dear Sir/Madam I am trying to compile a Cactus executable on my laptop, which has an ubuntu-based operating system(Ubuntu 18.04). I am using the latest version i.e; ET_2019_10. I am using simfactory and following the Simulation Factory Advanced Tutorial. For building, I am using generic configuration files which are also the default files. Here are the steps I am using: simfactory/bin/sim setup ./simfactory/bin/sim build -j2 --thornlist ../einsteintoolkit.th Compilation produces an executable, but when I go for running the example file using the command, exe/cactus_sim I get the following error. "" Fatal error in PMPI_Comm_rank: Invalid communicator, error stack: PMPI_Comm_rank(110): MPI_Comm_rank(comm=0x8202540, rank=0x7ffcee11d818) failed PMPI_Comm_rank(68).: Invalid communicator [unset]: write_line error; fd=-1 buf=:cmd=abort exitcode=805918213 : system msg for write_line failure : Bad file descriptor "" I am not able to find any relevant solution on the internet. Can you please help me find in the solution. Yours Sincerely, Rishank Diwan Pre-final Year Undergraduate Student Department of Physics Indian Institute of Technology, Kharagpur

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Meeting Minutes 2020-04-23
by Bill Gabella 23 Apr '20

23 Apr '20

Present: Steve B, Bill G, Roland H, Atul K, Peter D, Alois Peter S, Zhichao Z, Zach E., Christopher E., Maria BH, Yosef Z, Erik S Chair: Steve Minutes: Bill Steve does have a no cost extension, so the LSU Fall workshop could be put off until the next year. Asked Ian Hinder about moving Cactus code to Github. Is anything else on the SVN server? RH, Some tools only exist there which could be moved. Check if the mailing list is there. GW analysis code only exists there at this point. SB, We want to retire that server. * update on potential codes to be included in next release, from minutes [RH] o BaikalETK (Zach, Helvi) Zach says he should be sending email to Helvi. *14 days until feature freeze.* o PreSync (Steve, Roland) Roland and Steve have been communicating. Issues to be resolved and working on them. RH, could be a struggle to get everything in. * *feature freeze in **14**days*, https://www.timeanddate.com/countdown/to?iso=20200507T09&p0=3704&msg=Featur… timeline [RH] https://docs.einsteintoolkit.org/et-docs/Release_Details#Schedule_for_ET_20… * Release testsuite results [RH] http://einsteintoolkit.org/testsuite_results/index.php RH no updates. More important thing is to put on the website the fails of the testing, script needs updating and should take 1-2 hours to fix up. Best if you can see what changed easily. Script is in the testsuite results, and link that says all the results are stored in here. In there a Perl script is in the toplevel directory...also a CLI so that you can try this out (some details below). SB needs to run the Linux tests. o bugs of severity major or worse https://bitbucket.org/einsteintoolkit/tickets/issues?kind=bug&priority=majo… #2370:Wrong MoL surprises Steve, he has used it. RH, was always incorrect in Schedule.ccl so the order could be random. Likely changed in the last years, maybe when MoL changed, counting variables(?). #2368 Summation by parts, SB is anything going to happen? Peter will look at it today or tomorrow. #2336 Cactus version number in Makefile, Roland will fix soon. o trivial or minor bugs tagged for the next release https://bitbucket.org/einsteintoolkit/tickets/issues?kind=bug&priority=mino… o other open tickets flagged for the next release https://bitbucket.org/einsteintoolkit/tickets/issues?kind=proposal&kind=enh… * gallery testing: tasks https://bitbucket.org/einsteintoolkit/tickets/issues?kind=task&milestone=ET… See the note above about fixing script to add results to the web page. * volunteers needed, please volunteer (someone) [RH] Have volunteers for everything. o TOV: Brock Brendal (UIUC) o BNS: Shawn Rosofsky (UIUC) o BBH: Alois Peter Schaffarczyk (Kiel) << Atul K will help with post-processing, see below. o Poisson: Bill Gabella (Vanderbilt) o Multipatch scalar wave: Beyhan Karakaş (Ege University) unanswered question on mailing list https://www.einsteintoolkit.org/tools/unanswered.php Apr 9: Should put in a response on the "Instabilities with Summation..." Peter reminds us we discussed it last week. open tickets sorted by update time https://bitbucket.org/einsteintoolkit/tickets/issues?status=open&status=new… tickets ready for review https://bitbucket.org/einsteintoolkit/tickets/issues?status=new&status=open… All other business? Atul K. asked if he could help with gallery testing. Atul will work with Alois Peter S. on the BBH. Peter says the run has been done, on two machines, and starts the post-processing and there help would be good. They will coordinate. Chairs and minute taker for future meetings: 1st week May, 7 May 2020, Roland chair, Bill minutes 2nd week May, 14 May 2020, Zach chair, Maria minutes Zach tried to compile ETK on cell phone. First issue was a dumb thing, easy to fix. config.guess file is "12 years old" since last update. Gnu updates more frequently, could not recognize the ARM cpu. SB says make a ticket and a pull request. Extension of the existing script from the GNU folks. Steve has compiled on a Raspberry Pi...Erik recalls updating 8 years ago, the config.guess for the RPi. From above, Roland put in the chat his running the *Perl update script *on the command line: perl ./compare_results.pl ET_2019_03_v0 master results/bluewaters__{1_8,2_8}.log results/comet__{1_24,2_12}.log results/golub__1_10.log:results/golub__1_12.log results/golub__2_10.log:results/golub__2_12.log results/stampede2*.log results/osx-macports__*.log And a colon between items indicates a filename change between the two releases, as in the two Golub entries. -- ===================================== William Gabella Research Assistant Professor Department of Physics and Astronomy Vanderbilt University Nashville, TN USA b.gabella(a)vanderbilt.edu (o) 615-343-2713

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Einstein Toolkit Meeting Reminder
by users＠einsteintoolkit.org 22 Apr '20

22 Apr '20

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 users＠einsteintoolkit.org 20 Apr '20

20 Apr '20

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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Re: [Users] GRHydro::check_GRHydro_C2P_failed error
by Beyhan Karakaş 19 Apr '20

19 Apr '20

Dear Roberto, With respect to the question, I wanted to state that the issue with the GRHydro thorn which gave "retval" was overcomed by increasing resolution to dx=0.375 as you have suggested. But simulation stopped with NANs again at 1300 simulation time. Just as in the previous simulation, AHFinderDirect has searched for horizon after finding it for the first time at 825 but could not find again. I do not know how this problem could be solved. Output and error file are attached. Best regards, Beyhan. On Fri, Apr 17, 2020 at 6:45 PM Beyhan Karakaş <beyhannkarakas(a)gmail.com> wrote: > Dear Roberto, > > After increasing resolution to dx=0.375 there has not been any error in > the merger and afterwards so far (around 1077 simulation time) > But AHFinderDirect has been searching for horizon after finding it at 825. > Output file is attached. Doesn't it have to find the same horizon and how > it is changing during the evolution? > > I am looking forward to hearing from you. > > Best regards, > > Beyhan. > > On Tue, Apr 14, 2020 at 9:10 PM Beyhan Karakaş <beyhannkarakas(a)gmail.com> > wrote: > >> Dear Roberto, >> >> Thank you very much for your consideration and reply. When I change the >> resolution to dx=0.375 it requires 16 gb of ram and simulation becomes 9 >> times slower and it would take 2.5 days to reach the 1000 simulation time. >> I will try to do this and , if possible, inform you about the result. >> >> Best regards, >> >> Beyhan. >> >> >> On Tue, Apr 14, 2020 at 8:32 PM Roberto De Pietri < >> roberto.depietri(a)unipr.it> wrote: >> >>> Dear Beyjann >>> >>> From the output, it seems that the two stars just merged and then a >>> prompt collapse to Black Hole. An Apparent Horizon was found. >>> >>> INFO (AHFinderDirect): proc 0: searching for horizon 1/1 >>> INFO (AHFinderDirect): AH 1/1: r=2.18345 at (-0.000000,0.000000,0.000000) >>> INFO (AHFinderDirect): AH 1/1: area=376.8755139 m_irreducible=2.738192857 >>> 5952 558.000 | 129.2759814 | 0.0003459 | 0.0000439 | >>> 8.9127188 | 8.4903683 | 151.5039356 | 301.5059049 >>> >>> Dear Beyhan; >>> >>> Quite likely just resolution. >>> >>> But at the next iteration, AH finder was not able to find it again, and >>> indeed the interior of the black hole was >>> not excised and conservative to primitive failed close to the >>> singularity. >>> >>> Resolution of dx=0.75 it is not enough for simulation, and leas dx=0.375 >>> is needed for having running simulation >>> when black hole form and at least 0.25 to have some useful data. >>> >>> Roberto >>> >>> On 14 Apr 2020, at 17:22, Beyhan Karakaş <beyhannkarakas(a)gmail.com> >>> wrote: >>> >>> Dear to whom it may concern, >>> >>> I am using Mayer release on Fedora 31. I have made some changes in the >>> parameter file that was created by De Pietri, Feo, Maione and Loeffler in >>> 2016 (which could be downloaded from >>> http://www.fis.unipr.it/numrel/Research/BNS2016.html >>> <https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.fis.un…>). >>> Some of the Parma Groups' thorns were used in the parameter file added to >>> the end of the mail. >>> >>> Initial data for equal mass (M_1,2=1.7 M_sun) binary neutron stars was >>> generated on LORENE using SLy EOS. Table of it was attached. Initial data >>> could be downloaded from https://bitbucket.org/beyhank/bns >>> <https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbitbucket…> >>> . >>> >>> GRHydro thorn starts to give retval after 504 simulation time and stops >>> the simulation at 756 with NANs (BH formed at 558). I suppose the error >>> persists either "EinsteinEvolve/GRHydro" or "PRThorns/GRHydro" is used. >>> >>> I do not know whether this error is resulted from low resolution or >>> something else. Same setting does not seem to give any error for the >>> configuration M_1,2=1.2 M_sun. >>> >>> Output, error and parameter files are attached. >>> >>> Best regards, >>> >>> Beyhan. >>> >>> >>> --------------------------------------------------------------------------------- >>> # The Parma Thorns >>> !TARGET = $ARR >>> !TYPE = git >>> !URL = https://bitbucket.org/GravityPR/prthorns.git >>> <https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbitbucket…> >>> !REPO_PATH= $2 >>> !CHECKOUT = >>> PRThorns/TempPool >>> PRThorns/Meudon_Bin_NS >>> PRThorns/Hydro_RNSID >>> PRThorns/GRHydro >>> PRThorns/GRHydro_Analysis >>> PRThorns/GRHydro_InitData >>> <tnisan12.par><tnisan12.err><tnisan12.out><eos_sly4_pp.d> >>> _______________________________________________ >>> Users mailing list >>> Users(a)einsteintoolkit.org >>> >>> https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.eins… >>> >>> >>>

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Meeting Minutes for Apr. 16, 2020
by Hamilton, Maria 16 Apr '20

16 Apr '20

Present: Erik Schnetter, Maria Hamilton, Zach Etienne, Peter Diener, Roland Haas, William Gabella, Steven Brandt, Miguel Zilhao, Zhichao Zhao, Beyhan, Chrisopher Evans, Liu Haoyang Chair: Peter Minutes: Maria Peter opens the meeting with the agenda. * Future of ET: the new grant is awarded - https://www.nsf.gov/awardsearch/showAward?AWD_ID=2004879&HistoricalAwards=f… - Roland intends to have a wiki open to users - It will consist on 3 parts: Carpetx, NRPy and Canuta * Eric gives a presentation of AMReX (https://amrex-codes.github.io/amrex/index.html), the software the new driver Carpetx is based on (https://bitbucket.org/eschnett/cactusamrex ). * Zach had some questions on the indexing in AMRex, which is different from Carpet indexing, and Eric offered to give a Workshop on it. AMRex output is ineffective, and he is also working at a different file output (https://wci.llnl.gov/simulation/computer-codes/silo). * Zach gives a review of NRPy, which can be separated in 3 categories: - Register grid functions and parameters - Baikal - integration ET and NRPy - GPU kernels * Miguel gave a brief description of Canuta, that models Gravity augmented with other fields * Roland requires an update update on potential codes to be included in next release - BaikalETK: Zach, Helvi will have it reviewed in short time) - PreSync: Steve refers to documentation * Timeline of upcoming release freeze: May 7 * Roland does not have new updates for testsuites results, but the test system has changed, and some tests need to be redone. * Lastly, Peter discusses with Miguel about an unanswered question on the mailing list regarding summation by parts. * Erik raises the question about a standard Benchmark and offers to run one. * The meeting adjourns. _______________________ Maria C. Babiuc Hamilton, Ph.D. Professor, Department of Physics College of Science, Marshall University, 1 John Marshall Drive, Huntington, WV, 25755 Room S 257, Phone: (304)696-2754

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Einstein Toolkit Meeting Reminder
by users＠einsteintoolkit.org 15 Apr '20

15 Apr '20

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GRHydro::check_GRHydro_C2P_failed error
by Beyhan Karakaş 14 Apr '20

14 Apr '20

Dear to whom it may concern, I am using Mayer release on Fedora 31. I have made some changes in the parameter file that was created by De Pietri, Feo, Maione and Loeffler in 2016 (which could be downloaded from http://www.fis.unipr.it/numrel/Research/BNS2016.html). Some of the Parma Groups' thorns were used in the parameter file added to the end of the mail. Initial data for equal mass (M_1,2=1.7 M_sun) binary neutron stars was generated on LORENE using SLy EOS. Table of it was attached. Initial data could be downloaded from https://bitbucket.org/beyhank/bns . GRHydro thorn starts to give retval after 504 simulation time and stops the simulation at 756 with NANs (BH formed at 558). I suppose the error persists either "EinsteinEvolve/GRHydro" or "PRThorns/GRHydro" is used. I do not know whether this error is resulted from low resolution or something else. Same setting does not seem to give any error for the configuration M_1,2=1.2 M_sun. Output, error and parameter files are attached. Best regards, Beyhan. --------------------------------------------------------------------------------- # The Parma Thorns !TARGET = $ARR !TYPE = git !URL = https://bitbucket.org/GravityPR/prthorns.git !REPO_PATH= $2 !CHECKOUT = PRThorns/TempPool PRThorns/Meudon_Bin_NS PRThorns/Hydro_RNSID PRThorns/GRHydro PRThorns/GRHydro_Analysis PRThorns/GRHydro_InitData

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Agenda for Thursday's Meeting
by users＠einsteintoolkit.org 13 Apr '20

13 Apr '20

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 2020-04-09
by Helvi Witek 09 Apr '20

09 Apr '20

Meeting minutes for 2019-06-06 Present: Beyhan, Bill Gabella, Christopher Evans, Liu Haoyang, Maria Hamilton, Peter Diener, Roland Haas, Steven Brandt, Helvi Witek * Welcome to new participants in the call! * Questions regarding setup of GRHydro (Beyhan) ** recommendation to share parameter- and log-files via mailing list to enable trouble-shooting * Chairs / Minute takers for following meetings ** 16 April: Peter / Maria ** 23 April: Steve / Bill ** 30 April: Helvi / Steve * Update on codes to be included in upcoming release ** BaikalETK (contributed by Zach Etienne; under review by Helvi Witek) *** under review ** PreSync (contributed by Steve Brandt; under review by Roland Haas) *** review ongoing *** test thorn identified bugs; fix under way * Timeline of upcoming release ** Can be found on https://docs.einsteintoolkit.org/et-docs/Release_Details#Schedule_for_ET_20… ** planned release on 31 May 2020 ** expect only minor bug-fixes. ** Gallery Examples:. *** volunteers found for most examples. *** multipatch gallery example: Beyhan volunteered. Thank you! * no unanswered questions on mailing list -- --------------------------------------------- Dr. Helvi Witek Assistant Professor Department of Physics University of Illinois at Urbana-Champaign 247 Loomis Lab 1110 W Green St Urbana, IL 61801 ---------------------------------------------

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