[Mesa-users] The problem of Laminar Flame Speeds in Degenerate Oxygen–Neon Mixtures

Mon Oct 18 23:09:51 UTC 2021

Dear professors

Thank you for your reply，and I am so sorry that I didn't describe the problem clearly！

I am using mesa-r15140.
In star/test_suit/conductive_flame,I wrote 'change_net=.true. new_net_name='mesa_495.net' into inlist_conductive_flame,and I can successfully run ./rn in star/test_suit/'convective_flame'. 
In star/test_suit/c13_pocket/,first,I didn't change anything,and I ran ./rn successfully.I get result same as the stating in star/test_suit/c13_pocket/docs.Then I wrote 'change_net=.false. new_net_name='mesa_495.net' into star/test_suit/c13_pocket/inlist_common,and I only evolved c13_pocket phase. When I ran ./rn1,there are some errors in screen as follow:

Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

Backtrace for this error:
#0  0x7f0a085853ff in ???
#1  0x7c7953 in __hydro_mtx_MOD_enter_setmatrix
at ../private/hydro_mtx.f90:1095
#2  0x7bdd8d in do_enter_setmatrix
at ../private/star_solver_15066.f90:1185
#3  0x7bdd8d in setmatrix
at ../private/star_solver_15066.f90:1216
#4  0x7bdd8d in do_solver
at ../private/star_solver_15066.f90:437
#5  0x7c291e in __star_solver_15066_MOD_solver_15066
at ../private/star_solver_15066.f90:136
#6  0x762126 in newt
at ../private/solve_hydro.f90:688
#7  0x762126 in hydro_solver_step
at ../private/solve_hydro.f90:633
#8  0x762126 in do_hydro_solver
at ../private/solve_hydro.f90:546
#9  0x764808 in __solve_hydro_MOD_do_hydro_converge
at ../private/solve_hydro.f90:103
#10  0x767949 in __struct_burn_mix_MOD_do_struct_burn_mix
at ../private/struct_burn_mix.f90:185
#11  0x5c1b4a in do_step_part2
at ../private/evolve.f90:431
#12  0x5c84e3 in __evolve_MOD_do_evolve_step_part2
at ../private/evolve.f90:251
#13  0x411a38 in __star_lib_MOD_star_evolve_step_part2
at ../public/star_lib.f90:596
#14  0x411a38 in __star_lib_MOD_star_evolve_step
at ../public/star_lib.f90:566
#15  0x42bdc1 in __run_star_support_MOD_run1_star
at ../job/run_star_support.f90:130
#16  0x40a7e2 in __run_star_MOD_do_run_star
at ../../../../star/job/run_star.f90:26
#17  0x40a857 in run
at ../src/run.f90:13
#18  0x40a899 in main
at ../src/run.f90:2
./rn1: line 6: 35271 Segmentation fault      (core dumped) ./star

So I want to know why I can't run successfully c13_pocket with mesa_495.net?

Sincerely！
Liguo

At 2021-10-18 17:22:19, "Rob Farmer" <robert.j.farmer37 at gmail.com> wrote:

Hi
Changing the net to have 3335 isotopes is unlikely to run, MESA will almost certainly crash given the huge number of isotopes in that net.

Given you seem to have problems running the 495 net, I would suggest trying to get that working first before trying to go any bigger.

Repeating Aaron's question, What does "can't run successfully" mean? Are there any error messages? Do the results not look like what you expect, if so what do they look like and what do you expect?

Rob

On Mon, 18 Oct 2021 at 09:41, Liguo via Mesa-users <mesa-users at lists.mesastar.org> wrote:

Dear Timmes
Thank you very much for your reply and the reference you provided me!
If I change net in star job  to big net such as mesa_3335.net,whether should I add other sentences into inlist to run 'conductive_flame' successfully in star/test_suit?

Sincerely!
Liguo

At 2021-10-18 11:29:43, "Francis Timmes" <fxt44 at mac.com> wrote:
>hi liguo,
>
>i encourage looking at 
>
>https://docs.mesastar.org/en/latest/test_suite/conductive_flame.html#conductive-flame
>
>and the schwab et al 2020 article mentioned
>
>https://ui.adsabs.harvard.edu/abs/2020ApJ...891....5S/abstract
>
>and the zenodo repository of the effort
>
>https://doi.org/10.5281/zenodo.3537874
>
>fxt
>
>
>
>
>
>
>> On Oct 17, 2021, at 5:58 PM, Aaron Dotter <aaron.dotter at gmail.com> wrote:
>> 
>> Hi Liguo,
>> 
>> You'll need to be (much) more specific in order for anyone to help you.  When you try to run it with mesa_495.net, what happens?  What does "can't run successfully" mean?
>> 
>> Thanks,
>> Aaron
>> 
>> On Sun, Oct 17, 2021 at 8:23 PM Liguo via Mesa-users <mesa-users at lists.mesastar.org> wrote:
>> Dear Francis Timmes
>> I am using mesa-r15140.I want to reproduce your mesa work which is named conductive_flame in mesa/star/test_suit.But I have found that mesa can't run successfully when I use big net mesa_495.net.
>> Could you please help me analyze the problem?
>> Sincerely!
>> Liguo
>> 
>> 
>>  
>> _______________________________________________
>> mesa-users at lists.mesastar.org
>> https://lists.mesastar.org/mailman/listinfo/mesa-users
>> 

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