[Mesa-users] Unexpected process abort signal

Evan Bauer evan.bauer.astro at gmail.com
Tue Jun 28 13:16:49 UTC 2022

Hi Kaili,

It's likely that you are running out of memory with mesh_delta_coeff = 0.1. Have you tried profiling your machine's memory usage during the run?


> On Jun 28, 2022, at 9:11 AM, Cao, Kaili via Mesa-users <mesa-users at lists.mesastar.org> wrote:
> Dear MESA Users,
> Thank you for reading this email.
> I am running a series of simulations based on the star test 1M_pre_ms_to_wd with different numerical settings to study the numerical convergence. I customized a few things, including history and profile columns, nuclear network, opacity tables, and mixing length, none of which is expected to prevent MESA from yielding results. I also truncated the simulations on the red giant branch.
> I am using the latest release (release/r22.05.1) and running my simulations on my Red Hat machine. My simulations with mesh_delta_coeff = 1.0, 0.5, and 0.2 completed successfully; however, the one with mesh_delta_coeff = 0.1 failed because of an unexpected process abort signal. An abbreviated version of the terminal output is attached to this email.
> Could you please tell me whether this is a MESA issue or a system error? Thank you for your time and I look forward to your response.
> Best regards,
> Kaili Cao
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