1 2---- Minimum Surface Area With Plate Problem ----- 3mx:8, my:8, bmx:2, bmy:5, height:0.3 4iter = 0, Function value 1.83917, Residual: 0.44807 5iter = 1, Function value 1.79522, Residual: 0.58077 6iter = 2, Function value 1.6861, Residual: 0.325694 7iter = 3, Function value 1.6527, Residual: 0.463266 8iter = 4, Function value 1.61291, Residual: 0.140527 9iter = 5, Function value 1.60885, Residual: 0.0821046 10iter = 6, Function value 1.60662, Residual: 0.0647188 11iter = 7, Function value 1.60346, Residual: 0.0593318 12iter = 8, Function value 1.60324, Residual: 0.128197 13iter = 9, Function value 1.60161, Residual: 0.0357046 14iter = 10, Function value 1.60138, Residual: 0.0198527 15iter = 11, Function value 1.60122, Residual: 0.0143298 16iter = 12, Function value 1.60119, Residual: 0.0195803 17iter = 13, Function value 1.60115, Residual: 0.00495585 18iter = 14, Function value 1.60115, Residual: 0.00153265 19iter = 15, Function value 1.60115, Residual: 0.00122319 20iter = 16, Function value 1.60115, Residual: 0.00103626 21iter = 17, Function value 1.60115, Residual: 0.00156191 22iter = 18, Function value 1.60115, Residual: 0.000331879 23iter = 19, Function value 1.60115, Residual: 0.000179533 24iter = 20, Function value 1.60115, Residual: 0.000137138 25iter = 21, Function value 1.60115, Residual: 0.000126009 26iter = 22, Function value 1.60115, Residual: 7.08451e-05 27Tao Object: 1 MPI processes 28 type: bqnls 29 Rejected BFGS updates: 0 30 CG steps: 0 31 Newton steps: 0 32 BFGS steps: 21 33 Scaled gradient steps: 1 34 Gradient steps: 0 35 KSP termination reasons: 36 atol: 0 37 rtol: 0 38 ctol: 0 39 negc: 0 40 dtol: 0 41 iter: 0 42 othr: 0 43 Mat Object: (tao_bqnls_) 1 MPI processes 44 type: lmvmbfgs 45 rows=64, cols=64 46 Scale type: diagonal 47 Scale history: 1 48 Scale params: alpha=1., beta=0.5, rho=1. 49 Convex factors: phi=0., theta=0.125 50 Max. storage: 5 51 Used storage: 5 52 Number of updates: 21 53 Number of rejects: 0 54 Number of resets: 0 55 Mat Object: (J0_) 1 MPI processes 56 type: lmvmdiagbrdn 57 rows=64, cols=64 58 Scale history: 1 59 Scale params: alpha=1., beta=0.5, rho=1. 60 Convex factor: theta=0.125 61 Max. storage: 1 62 Used storage: 1 63 Number of updates: 21 64 Number of rejects: 0 65 Number of resets: 0 66 TaoLineSearch Object: 1 MPI processes 67 type: more-thuente 68 maximum function evaluations=30 69 tolerances: ftol=0.0001, rtol=1e-10, gtol=0.9 70 total number of function evaluations=0 71 total number of gradient evaluations=0 72 total number of function/gradient evaluations=1 73 using variable bounds 74 Termination reason: 1 75 KSP Object: (unused) 1 MPI processes 76 type: stcg 77 maximum iterations=10000, initial guess is zero 78 tolerances: relative=1e-05, absolute=1e-50, divergence=10000. 79 left preconditioning 80 using DEFAULT norm type for convergence test 81 PC Object: (unused) 1 MPI processes 82 type: lmvm 83 PC has not been set up so information may be incomplete 84 Mat Object: (tao_bqnls_) 1 MPI processes 85 type: lmvmbfgs 86 rows=64, cols=64 87 Scale type: diagonal 88 Scale history: 1 89 Scale params: alpha=1., beta=0.5, rho=1. 90 Convex factors: phi=0., theta=0.125 91 Max. storage: 5 92 Used storage: 5 93 Number of updates: 21 94 Number of rejects: 0 95 Number of resets: 0 96 Mat Object: (J0_) 1 MPI processes 97 type: lmvmdiagbrdn 98 rows=64, cols=64 99 Scale history: 1 100 Scale params: alpha=1., beta=0.5, rho=1. 101 Convex factor: theta=0.125 102 Max. storage: 1 103 Used storage: 1 104 Number of updates: 21 105 Number of rejects: 0 106 Number of resets: 0 107 total KSP iterations: 0 108 Active Set subset type: subvec 109 convergence tolerances: gatol=0.0001, steptol=0., gttol=0. 110 Residual in Function/Gradient:=7.08451e-05 111 Objective value=1.60115 112 total number of iterations=22, (max: 50) 113 total number of function/gradient evaluations=24, (max: 4000) 114 Solution converged: ||g(X)|| <= gatol 115