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 <[email protected]> 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 <[email protected]> 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.unipr.it%2Fnumrel%2FResearch%2FBNS2016.html&data=02%7C01%7Croberto.depietri%40unipr.it%7C9856f8be4a614c36092808d7e087c54c%7Cbb064bc5b7a841ecbabed7beb3faeb1c%7C0%7C0%7C637224746075422862&sdata=dwMfDo1WyBsGfCHoyLC%2BxsgD8e7LywtPY%2BCajZwPheA%3D&reserved=0>). > 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.org%2Fbeyhank%2Fbns&data=02%7C01%7Croberto.depietri%40unipr.it%7C9856f8be4a614c36092808d7e087c54c%7Cbb064bc5b7a841ecbabed7beb3faeb1c%7C0%7C0%7C637224746075432863&sdata=%2FihD6LLxM2FTPBZpMQUevJecdN1yJf6Y0%2B%2FEN7xnJv4%3D&reserved=0> > . > > 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.org%2FGravityPR%2Fprthorns.git&data=02%7C01%7Croberto.depietri%40unipr.it%7C9856f8be4a614c36092808d7e087c54c%7Cbb064bc5b7a841ecbabed7beb3faeb1c%7C0%7C0%7C637224746075432863&sdata=PeD%2BZDceaHgO2mnDg8kKI2dmfc34Y7YmB%2BqOG383Gco%3D&reserved=0> > !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 > [email protected] > > https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.einsteintoolkit.org%2Fmailman%2Flistinfo%2Fusers&data=02%7C01%7Croberto.depietri%40unipr.it%7C9856f8be4a614c36092808d7e087c54c%7Cbb064bc5b7a841ecbabed7beb3faeb1c%7C0%7C0%7C637224746075472838&sdata=eKXWawcyEF4bd0wEZzILHnlV544pByOsqnNdlFZ5%2Blk%3D&reserved=0 > > >
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