[Mesa-users] Termination issues with hydrogen burn in 1M star

[Warrick Ball]

Hi Kaitlyn,

The "Killed" message is usually a sign that MESA has run out of RAM.  If possible, try to increase the amount of RAM available to the emulator.  The system should have at least 8GB available to it, though you might get by okay with 6GB.

Alternatively, you can try adding the control [1]

     num_steps_for_garbage_collection = 1000 ! default 0, might need even less

to the `&controls` part of the inlist.  It looks like you're crashing on the main sequence, though, which isn't usually heavy on RAM, so you might find you need to decrease this to 100, or perhaps even 50.  MESA will run more slowly (it'll pause to drop then reload the equation of state tables) but should hopefully crash less.

Cheers,
Warrick

[1] https://docs.mesastar.org/en/release-r23.05.1/reference/star_job.html#num-steps-for-garbage-collection

___________

Warrick Ball
Senior Research Software Engineer
University of Birmingham
W.H.Ball at bham.ac.uk

On Wed, 19 Jul 2023, Kaitlyn L via Mesa-users wrote:

> CAUTION: This email originated from outside the organisation. Do not click links or open attachments unless you recognise the sender and know the content is safe.
> Hi,
> I've been running the 1M_pre_to_wd code from the mesa-r23.05.1 test suite and am repeatedly getting the following error:
> 
> write /home/kaitlynliang/mesa-r23.05.1/data/eosDT_data/cache/mesa-FreeEOS_02z30x.bin
> ./rn1: line 6:  1142 Killed                  ./star
> DATE: 2023-07-19
> TIME: 15:13:28
> 
> ******************************************************************
> failed to create end_core_h_burn.mod when running inlist_to_end_core_h_burn_header
> ******************************************************************
> 
> Surprisingly, start.mod gets written to disk, but crashes before end_core_h_burn.mod is written to disk. 
> 
> MESA is being run inside a Ubuntu emulator running on top of Windows 10 HP Laptop. I'm a highschool student working with an experienced MESA user, but neither of us can figure it out. 
> 
> Thank you,
> -Kaitlyn Liang
> 
> 
>