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 1.68677, Residual: 0.332042 7iter = 3, Function value 1.65405, Residual: 0.477018 8iter = 4, Function value 1.61302, Residual: 0.142922 9iter = 5, Function value 1.60888, Residual: 0.0809677 10iter = 6, Function value 1.60667, Residual: 0.0648005 11iter = 7, Function value 1.60351, Residual: 0.0601214 12iter = 8, Function value 1.60249, Residual: 0.066145 13iter = 9, Function value 1.60164, Residual: 0.0368939 14iter = 10, Function value 1.60133, Residual: 0.0252556 15iter = 11, Function value 1.6012, Residual: 0.0137144 16iter = 12, Function value 1.60116, Residual: 0.00557861 17iter = 13, Function value 1.60115, Residual: 0.00396689 18iter = 14, Function value 1.60115, Residual: 0.00147233 19iter = 15, Function value 1.60115, Residual: 0.00119981 20iter = 16, Function value 1.60115, Residual: 0.00101585 21iter = 17, Function value 1.60115, Residual: 0.00139896 22iter = 18, Function value 1.60115, Residual: 0.000311967 23iter = 19, Function value 1.60115, Residual: 0.000165684 24iter = 20, Function value 1.60115, Residual: 0.000124522 25iter = 21, Function value 1.60115, Residual: 0.000148965 26iter = 22, Function value 1.60115, Residual: 5.30587e-05 27Tao Object: 1 MPI process 28 type: bqnkls 29 Rejected BFGS updates: 0 30 CG steps: 0 31 Newton steps: 22 32 BFGS steps: 0 33 Scaled gradient steps: 0 34 Gradient steps: 0 35 KSP termination reasons: 36 atol: 0 37 rtol: 22 38 ctol: 0 39 negc: 0 40 dtol: 0 41 iter: 0 42 othr: 0 43 Mat Object: (tao_bnk_pc_lmvm_) 1 MPI process 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: (tao_bnk_pc_lmvm_J0_) 1 MPI process 56 type: lmvmdiagbroyden 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 process 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: (tao_bnk_) 1 MPI process 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 UNPRECONDITIONED norm type for convergence test 81 PC Object: (tao_bnk_) 1 MPI process 82 type: lmvm 83 Mat Object: (tao_bnk_pc_lmvm_) 1 MPI process 84 type: lmvmbfgs 85 rows=64, cols=64 86 Scale type: DIAGONAL 87 Scale history: 1 88 Scale params: alpha=1., beta=0.5, rho=1. 89 Convex factors: phi=0., theta=0.125 90 Max. storage: 5 91 Used storage: 5 92 Number of updates: 21 93 Number of rejects: 0 94 Number of resets: 0 95 Mat Object: (tao_bnk_pc_lmvm_J0_) 1 MPI process 96 type: lmvmdiagbroyden 97 rows=64, cols=64 98 Scale history: 1 99 Scale params: alpha=1., beta=0.5, rho=1. 100 Convex factor: theta=0.125 101 Max. storage: 1 102 Used storage: 1 103 Number of updates: 21 104 Number of rejects: 0 105 Number of resets: 0 106 linear system matrix = precond matrix: 107 Mat Object: 1 MPI process 108 type: submatrix 109 rows=52, cols=52 110 total KSP iterations: 61 111 Active Set subset type: subvec 112 convergence tolerances: gatol=0.0001, steptol=0., gttol=0. 113 Residual in Function/Gradient:=5.30587e-05 114 Objective value=1.60115 115 total number of iterations=22, (max: 50) 116 total number of function/gradient evaluations=25, (max: 4000) 117 Solution converged: ||g(X)|| <= gatol 118