1PetscRegressor Object: 1 MPI process 2 type: linear 3 PetscRegressor Linear Type: ols 4 Tao Object: (regressor_linear_) 1 MPI process 5 type: brgn 6 Regularizer weight: 0. 7 BRGN Regularization Type: l2prox 8 Tao Object: (tao_brgn_subsolver_) 1 MPI process 9 type: bnls 10 Tao Object: (tao_brgn_subsolver_tao_bnk_cg_) 1 MPI process 11 type: bncg 12 CG Type: ssml_bfgs 13 Skipped Stepdirection Updates: 0 14 Scaled gradient steps: 0 15 Pure gradient steps: 0 16 Not a descent direction: 0 17 Line search fails: 0 18 Matrix has not been preallocated yet 19 TaoLineSearch Object: (tao_brgn_subsolver_tao_bnk_cg_) 1 MPI process 20 type: more-thuente 21 maximum function evaluations=30 22 tolerances: ftol=0.0001, rtol=1e-10, gtol=0.9 23 total number of function evaluations=0 24 total number of gradient evaluations=0 25 total number of function/gradient evaluations=0 26 Termination reason: CONTINUE_ITERATING 27 convergence tolerances: gatol=1e-08, grtol=1e-08, steptol=0., gttol=0. 28 Residual in Function/Gradient:=0. 29 Objective value=0. 30 total number of iterations=0, (max: 2000) 31 Solver never run 32 Rejected BFGS updates: 0 33 CG steps: 0 34 Newton steps: 1 35 BFGS steps: 0 36 Scaled gradient steps: 0 37 Gradient steps: 0 38 KSP termination reasons: 39 atol: 1 40 rtol: 0 41 ctol: 0 42 negc: 0 43 dtol: 0 44 iter: 0 45 othr: 0 46 TaoLineSearch Object: (tao_brgn_subsolver_) 1 MPI process 47 type: more-thuente 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=10, cols=10 65 Max. storage: 5 66 Used storage: 0 67 Number of updates: 0 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=10, cols=10 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=10, cols=10 84 total KSP iterations: 1 85 convergence tolerances: gatol=1e-08, grtol=1e-08, steptol=0., gttol=0. 86 Residual in Function/Gradient:=0. 87 Objective value=0. 88 total number of iterations=1, (max: 10000) 89 total number of function evaluations=3, (max: unlimited) 90 total number of function/gradient evaluations=3, (max: unlimited) 91 total number of Hessian evaluations=1 92 total number of Jacobian evaluations=4 93 Solution converged: ||g(X)|| <= gatol 94 convergence tolerances: gatol=1e-08, grtol=1e-08, steptol=0., gttol=0. 95 Residual in Function/Gradient:=0. 96 Objective value=41.25 97 total number of iterations=1, (max: 10000) 98 total number of function evaluations=3, (max: unlimited) 99 total number of function/gradient evaluations=3, (max: unlimited) 100 total number of Hessian evaluations=1 101 Solution converged: ||g(X)|| <= gatol 102