[Users] problems of reproducing the simulation of binary neutron star with different mass

Sat May 12 00:40:03 CDT 2018

Dear whom it may concern,

I am trying to reproduce the simulation of binary neutron star (http://einsteintoolkit.org/gallery/bns/index.html) with different mass. I use Lorene code to produce the initial data . The parameter files I used is locate in /Lorene/Codes/Bin_star/Parameters/Polytrope_irrot/Test_GR . And I changed  central enthalpy of each star in par_init.d to get different mass (Is there other way I can get different mass?). And then I simulate with the ET. However I met some problems:

1.I requested 48 cores with 10 hours to run the code , however the code terminated after running ~4 hours. And the end of .err file reads:

cactus_sim: /global/u1/c/chlin/Cactus/arrangements/Carpet/Carpet/src/helpers.cc:275: int Carpet::Abort(const _cGH *, int): Assertion `0' failed.

Rank 0 with PID 47930 received signal 6

Writing backtrace to nsnstohmns/backtrace.0.txt

Rank 1 with PID 47931 received signal 6

Writing backtrace to nsnstohmns/backtrace.1.txt

cactus_sim: /global/u1/c/chlin/Cactus/arrangements/Carpet/Carpet/src/helpers.cc:275: int Carpet::Abort(const _cGH *, int): Assertion `0' failed.

Rank 2 with PID 13239 received signal 6

Rank 3 with PID 13240 received signal 6

Writing backtrace to nsnstohmns/backtrace.2.txt

Writing backtrace to nsnstohmns/backtrace.3.txt

srun: error: nid05930: tasks 2-3: Aborted

srun: Terminating job step 9192104.0

srun: error: nid05920: tasks 0-1: Aborted

The code is aborted without completing the whole process until the merger. How can I perform the complete process?

2. When I use visit to do the visualization ,I found the file rho.xy.h5 only has half of the whole simulation as :

[cid:e66a53d5-d406-4599-997f-00e90a864dc0]

The tutorial(scripts.tar.gz<http://einsteintoolkit.org/gallery/bns/scripts.tar.gz>) tells that I should use symmetric reflection to perform the whole visualization. However I cannot use this method since I simulated binary star with different mass . So there is no symmetry. How can I get the whole picture instead of only half ?

Thank you.

Best regards,

Chia-Hui Lin
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