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 process 28 type: bqnls 29 Tao Object: (tao_bnk_) 1 MPI process 30 type: bncg 31 CG Type: ssml_bfgs 32 Skipped Stepdirection Updates: 0 33 Scaled gradient steps: 0 34 Pure gradient steps: 0 35 Not a descent direction: 0 36 Line search fails: 0 37 Matrix has not been preallocated yet 38 TaoLineSearch Object: (tao_bnk_) 1 MPI process 39 type: more-thuente 40 maximum function evaluations=30 41 tolerances: ftol=0.0001, rtol=1e-10, gtol=0.9 42 total number of function evaluations=0 43 total number of gradient evaluations=0 44 total number of function/gradient evaluations=0 45 Termination reason: 0 46 Active Set subset type: subvec 47 convergence tolerances: gatol=1e-08, steptol=0., gttol=0. 48 Residual in Function/Gradient:=0. 49 Objective value=0. 50 total number of iterations=0, (max: 2000) 51 Solver terminated: 0 52 Rejected BFGS updates: 0 53 CG steps: 0 54 Newton steps: 0 55 BFGS steps: 21 56 Scaled gradient steps: 1 57 Gradient steps: 0 58 KSP termination reasons: 59 atol: 0 60 rtol: 0 61 ctol: 0 62 negc: 0 63 dtol: 0 64 iter: 0 65 othr: 0 66 Mat Object: (tao_bqnls_) 1 MPI process 67 type: lmvmbfgs 68 rows=64, cols=64 69 Scale type: DIAGONAL 70 Scale history: 1 71 Scale params: alpha=1., beta=0.5, rho=1. 72 Convex factors: phi=0., theta=0.125 73 Max. storage: 5 74 Used storage: 5 75 Number of updates: 21 76 Number of rejects: 0 77 Number of resets: 0 78 Mat Object: (tao_bqnls_J0_) 1 MPI process 79 type: lmvmdiagbroyden 80 rows=64, cols=64 81 Scale history: 1 82 Scale params: alpha=1., beta=0.5, rho=1. 83 Convex factor: theta=0.125 84 Max. storage: 1 85 Used storage: 1 86 Number of updates: 21 87 Number of rejects: 0 88 Number of resets: 0 89 TaoLineSearch Object: 1 MPI process 90 type: more-thuente 91 maximum function evaluations=30 92 tolerances: ftol=0.0001, rtol=1e-10, gtol=0.9 93 total number of function evaluations=0 94 total number of gradient evaluations=0 95 total number of function/gradient evaluations=1 96 using variable bounds 97 Termination reason: 1 98 KSP Object: 1 MPI process 99 type: stcg 100 maximum iterations=10000, initial guess is zero 101 tolerances: relative=1e-05, absolute=1e-50, divergence=10000. 102 left preconditioning 103 using DEFAULT norm type for convergence test 104 PC Object: 1 MPI process 105 type: lmvm 106 PC has not been set up so information may be incomplete 107 Mat Object: (tao_bqnls_) 1 MPI process 108 type: lmvmbfgs 109 rows=64, cols=64 110 Scale type: DIAGONAL 111 Scale history: 1 112 Scale params: alpha=1., beta=0.5, rho=1. 113 Convex factors: phi=0., theta=0.125 114 Max. storage: 5 115 Used storage: 5 116 Number of updates: 21 117 Number of rejects: 0 118 Number of resets: 0 119 Mat Object: (tao_bqnls_J0_) 1 MPI process 120 type: lmvmdiagbroyden 121 rows=64, cols=64 122 Scale history: 1 123 Scale params: alpha=1., beta=0.5, rho=1. 124 Convex factor: theta=0.125 125 Max. storage: 1 126 Used storage: 1 127 Number of updates: 21 128 Number of rejects: 0 129 Number of resets: 0 130 total KSP iterations: 0 131 Active Set subset type: subvec 132 convergence tolerances: gatol=0.0001, steptol=0., gttol=0. 133 Residual in Function/Gradient:=7.08451e-05 134 Objective value=1.60115 135 total number of iterations=22, (max: 50) 136 total number of function/gradient evaluations=24, (max: 4000) 137 Solution converged: ||g(X)|| <= gatol 138