[mesa-users] Convergence problems with test_suite/1M_pre_ms_to_wd

Richard Townsend townsend at astro.wisc.edu
Wed Aug 1 14:51:04 EDT 2012

Hi Linda --

Have you tried setting the OMP_NUM_THREADS environment variable? Use

export OMP_NUM_THREADS=<n>

...where <n> is the number of processor cores on your machine (if you don't know this number, '1' will always work, albeit at a performance penalty).



On Aug 1, 2012, at 1:34 PM, Linda Strubbe wrote:

> Hello again,
> I just wanted to send this again in case it fell through the cracks.  I'd appreciate any help with this, and am very glad to give more info if you let me know what I need to tell you.  Thanks very much!
> Linda
> On Thu, Jul 26, 2012 at 7:31 PM, Linda Strubbe <linda at cita.utoronto.ca> wrote:
> Hello,
> I'm trying to run the test_suite 1M_pre_ms_to_wd (on my Linux machine) and am running into some trouble.  I haven't changed the input at all-- I'm just doing cd into the directory test_suite/1M_pre_ms_to_wd and then ./mk and ./rn.  After many hours, the output says "stopping because of convergence problems -- too many backups."  The code has stopped at profile 35990 (which corresponds to time 1.246e10 -- and there are many many profiles that are all at essentially this same exact time, presumably as it tries to converge there).  It's also not showing me the PG plot as it goes along...   Do you have any idea what's going wrong and how I can make it work?
> I also wanted to re-try star/test inlist_first_thing_to_try.  When I ran it before, it did as was described on the webpage, and showed me a PGPlot along the way, but this time I see no plot and I instead get:
> "ERROR:  must set the OMP_NUM_THREADS environment variable ierr    -1
> do_star_job_controls_after ierr      -1"
> I see that there's new version of MESA now which addresses OMP_NUM_THREADS-- should downloading that fix the problem?  (I still don't know why it worked before though.)
> Thanks very much!
> Linda
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