petsc-3.6.1 2015-08-06---- Minimum Surface Area Problem ----- mx: 32 my: 32 Tao Object: 16 MPI processes type: nm expansions: 0 reflections: 928 inside contractions: 1024 outside contractionss: 0 Shrink steps: 0 convergence tolerances: fatol=1e-08, frtol=1e-08 convergence tolerances: gatol=1e-08, steptol=0, gttol=0 Residual in Function/Gradient:=0.0484194 Objective value=1.50558 total number of iterations=1952, (max: 2000) total number of function/gradient evaluations=4001, (max: 4000) Solver terminated: -5 Maximum Function Evaluations Try a different TAO method