Crash of a single case terminates the whole optimization process

Hello all,

We want to couple an in-house flow solver with an in-house optimization code, both written in Matlab as m-files (both have many subroutines and a main function). This is to optimize some geometric parameters.

Once a single flow solution case is crashed (e.g. in one of solver subroutines), the whole optimization process is crashed (the main flow solver m-file is defined as a function in the main optimization m-file).

Our aim is to continue the flow solution cases after one case is crashed (e.g. due to NaN error, etc.).

Is there a way to accomplish this without adding complex and numerous controls to the solver code? (e.g. to terminate the main solver m-file without terminating the main optimization m-file).

By the way crashes occur in the subroutines of the flow solver, not in the main flow solver m-file.

Best Regards,

Sercan

Answer 1

[A Jenkins]

You can use a try block around your code.

for idx=1:n  
  try
     solver_that_might_crash(idx)
  catch
     disp('warning, case failed, moving on...')
  end  
end

[Sercan Acarer]

Thank you very much. This seems to solve the problem.