1Tao Object: 1 MPI process 2 type: brgn 3 Regularizer weight: 2e-05 4 BRGN Regularization Type: lm 5 Downhill trust region decrease factor:: 0.2 6 Uphill trust region increase factor:: 1.5 7 Tao Object: (tao_brgn_subsolver_) 1 MPI process 8 type: bnls 9 Tao Object: (tao_brgn_subsolver_tao_bnk_cg_) 1 MPI process 10 type: bncg 11 CG Type: ssml_bfgs 12 Skipped Stepdirection Updates: 0 13 Scaled gradient steps: 0 14 Pure gradient steps: 0 15 Not a descent direction: 0 16 Line search fails: 0 17 Matrix has not been preallocated yet 18 TaoLineSearch Object: (tao_brgn_subsolver_tao_bnk_cg_) 1 MPI process 19 type: more-thuente 20 maximum function evaluations=30 21 tolerances: ftol=0.0001, rtol=1e-10, gtol=0.9 22 total number of function evaluations=0 23 total number of gradient evaluations=0 24 total number of function/gradient evaluations=0 25 Termination reason: CONTINUE_ITERATING 26 convergence tolerances: gatol=1e-08, grtol=1e-08, steptol=0., gttol=0. 27 Residual in Function/Gradient:=0. 28 Objective value=0. 29 total number of iterations=0, (max: 2000) 30 Solver never run 31 Rejected BFGS updates: 0 32 CG steps: 0 33 Newton steps: 2 34 BFGS steps: 0 35 Scaled gradient steps: 0 36 Gradient steps: 0 37 KSP termination reasons: 38 atol: 0 39 rtol: 2 40 ctol: 0 41 negc: 0 42 dtol: 0 43 iter: 0 44 othr: 0 45 TaoLineSearch Object: (tao_brgn_subsolver_) 1 MPI process 46 type: unit 47 Line Search: Unit Step 1.. 48 maximum function evaluations=30 49 tolerances: ftol=0.0001, rtol=1e-10, gtol=0.9 50 total number of function evaluations=0 51 total number of gradient evaluations=0 52 total number of function/gradient evaluations=1 53 Termination reason: SUCCESS 54 KSP Object: (tao_brgn_subsolver_tao_bnk_) 1 MPI process 55 type: stcg 56 maximum iterations=10000, initial guess is zero 57 tolerances: relative=1e-05, absolute=1e-50, divergence=10000. 58 left preconditioning 59 using UNPRECONDITIONED norm type for convergence test 60 PC Object: (tao_brgn_subsolver_tao_bnk_) 1 MPI process 61 type: lmvm 62 Mat Object: (tao_brgn_subsolver_tao_bnk_pc_lmvm_) 1 MPI process 63 type: lmvmbfgs 64 rows=5, cols=5 65 Max. storage: 5 66 Used storage: 1 67 Number of updates: 1 68 Number of rejects: 0 69 Number of resets: 0 70 J0: 71 Mat Object: (tao_brgn_subsolver_tao_bnk_pc_lmvm_mat_lmvm_J0_) 1 MPI process 72 type: diagonal 73 rows=5, cols=5 74 Vec Object: 1 MPI process 75 type: seq 76 Rescale type: diagonal 77 Rescale history: 1 78 Rescale params: alpha=1., beta=0.5, rho=1. 79 Rescale convex factor: theta=0.125 80 linear system matrix, which is also used to construct the preconditioner: 81 Mat Object: 1 MPI process 82 type: shell 83 rows=5, cols=5 84 total KSP iterations: 6 85 convergence tolerances: gatol=1e-06, grtol=1e-08, steptol=0., gttol=0. 86 Residual in Function/Gradient:=9.07258e-09 87 Objective value=1.28415e-16 88 total number of iterations=2, (max: 10000) 89 total number of function evaluations=5, (max: unlimited) 90 total number of function/gradient evaluations=5, (max: unlimited) 91 total number of Hessian evaluations=2 92 total number of Jacobian evaluations=7 93 Solution converged: ||g(X)|| <= gatol 94 convergence tolerances: gatol=1e-06, grtol=1e-08, steptol=0., gttol=0. 95 Residual in Function/Gradient:=0. 96 Objective value=1.71859e-08 97 total number of iterations=2, (max: 10000) 98 total number of function evaluations=5, (max: unlimited) 99 total number of function/gradient evaluations=5, (max: unlimited) 100 total number of Hessian evaluations=2 101 Solution converged: ||g(X)|| <= gatol 102