Could you share output for your current configuration with -tao_monitor -tao_ls_monitor -tao_view?
"Ellen M. Price" <ellen.pr...@cfa.harvard.edu> writes: > Hello PETSc users! > > I am using Tao for an unconstrained minimization problem. I have found > that CG works better than the other types for this application. After > about 85 iterations, I get an error about line search failure. I'm not > clear on what this means, or how I could mitigate the problem, and > neither the manual nor FAQ give any guidance. Can anyone suggest things > I could try to help the method converge? I have function and gradient > info, but no Hessian. > > Thanks, > Ellen Price