[mesa-users] Controls for Solver Tolerance

[Spencer C Wallace]

Hello,

I am working with some models and I have a hunch that the solutions to the
structure and composition equations might not be precise enough for my
purposes. I would like to run a series of models with increasingly strict
tolerances for what the solver would consider a 'converged' solution.

I found some inlist controls which looked useful:

tol_correction_norm = 3d-5
tol_max_correction = 3d-3

max_iter_for_resid_tol1 = 4
tol_residual_norm1 = 1d-4
tol_max_residual1 = 1d-2

I tried lowering the value of 'tol_max_residual1' and turning up
'max_iter_for_resid_tol1'. Is this a good approach? I'm a little unclear
what the difference between 'tol_residual_norm1' and 'tol_max_residual1'
is. I'm not sure I understand what 'tol_correction_norm' and
'tol_max_correction' do either. Would anyone care to enlighten me?

Spencer Wallace
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