[Mesa-users] ppisn problem for version r15140

[Jing-Ze Ma]

Thanks Jeremy.


Yes. Apologies for the ambiguity.


The time-step is going to zero, but doesn't reach the lower limit
1d-20 seconds.


For most cases log dt falls to about -10 and the star doesn't evolve
after that. All the parameters on the terminal change very little so
I think it may be a lost cause. I just put a stop to it after running 
a day on 4 cores.

-----Original Messages-----
From:"Jeremy Sakstein" <sakstein at hawaii.edu>
Sent Time:2021-02-11 15:00:14 (Thursday)
To: "马竟泽" <mjz18 at mails.tsinghua.edu.cn>
Cc: mesa-users <mesa-users at lists.mesastar.org>
Subject: Re: Re: [Mesa-users] ppisn problem for version r15140


Thanks,


Can you also enlighten us as what you mean by "fails to converge"?


Is the time-step going to zero?


On Wed, Feb 10, 2021 at 5:37 PM 马竟泽 <mjz18 at mails.tsinghua.edu.cn> wrote:

Hi Jeremy,


Here are my inlist_ppisn, inlist_extra and run_star_extras files.

Also, am I keeping this conversation inside the list?
I'm still figuring our how to use the mailing list.


Thanks.


Best regards,


Jing-Ze





-----Original Messages-----
From:"Jeremy Sakstein" <sakstein at hawaii.edu>
Sent Time:2021-02-11 09:29:09 (Thursday)
To: "马竟泽" <mjz18 at mails.tsinghua.edu.cn>
Cc: mesa-users <mesa-users at lists.mesastar.org>
Subject: Re: [Mesa-users] ppisn problem for version r15140


Hi Jing-Ze,


It is likely you are having a different problem to me, since the problem I had was specific to objects with masses <40ish, and low metallicities.


If you send me your inlist and run_star_extras I can have a look for you if you like?


I spent some time looking at the masses you describe in r-15140 so I may be able to help.


Cheers,


Jeremy


On Wed, Feb 10, 2021 at 3:24 PM 马竟泽 via Mesa-users <mesa-users at lists.mesastar.org> wrote:

Hi everyone,


I'm trying to run the template_ST (Merchant & Moriya 2020 A&A)
with a few modications from test_suite ppisn so that it can
start to run in r15140.


I've tried initial masses of 70, 80, 90, 100, 130 solar masses
without rotation. So far only the 100 solar mass case evolved 
to its termination condition and reached a PISN. The rest just 
failed to converge.


I've noticed a similar question "Question about (relatively) low 
mass stars in the PPISN test suit" posted by Jeremy Sakstein. It
seems that Jeremy has found the way for ppisn to work in r15140.
But I only joined the mailing list yesterday, so I can't seem to 
open the run_star_extras and inlist files attached to that mail.
I'd appreciate it if someone could re-send me those files or give
some suggestions.


Thanks a lot!


--

Jing-Ze Ma
Undergraduate Student,
Tsien Excellence in Engineering Program (TEEP) 2018,
School of Aerospace Engineering,
Tsinghua University


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