How can I capture convergence errors inside vmecpp?

[DMCXE]

The try/except mechanism I’m using does not catch the message

HAVING A CONVERGENCE PROBLEM: RESETTING DELT TO 0.691.
If this does NOT resolve the problem, try changing (decrease OR increase) the value of DELT

and my program stops at that point. Is there a good way to catch this error and skip it, or am I missing some key vmecpp settings?

[jurasic-pf]

Hi, sorry for getting back to you so late.

The error you are seeing isn't fatal, so vmec++ doesn't terminate or throw an exception at this point. it should continue iterating and eventually either converge or run out of iterations.

vmecpp/src/vmecpp/cpp/vmecpp/vmec/vmec/vmec.cc

Line 852 in 526d298

" try changing (decrease OR increase) the value of DELT\n",

Could you post a minimal reproducible example? Then I can maybe help on why it isn't converging.