xref: /petsc/src/tao/leastsquares/tutorials/output/cs1_view_lm.out (revision eaa7cf455101e7391ead982166c6e99faf273403)

Tao Object: 1 MPI process
  type: brgn
    Regularizer weight: 2e-05
    BRGN Regularization Type: lm
    Downhill trust region decrease factor:: 0.2
    Uphill trust region increase factor:: 1.5
    Tao Object: (tao_brgn_subsolver_) 1 MPI process
      type: bnls
        Tao Object: (tao_brgn_subsolver_tao_bnk_cg_) 1 MPI process
          type: bncg
            CG Type: ssml_bfgs
            Skipped Stepdirection Updates: 0
            Scaled gradient steps: 0
            Pure gradient steps: 0
            Not a descent direction: 0
            Line search fails: 0
            Matrix has not been preallocated yet
          TaoLineSearch Object: (tao_brgn_subsolver_tao_bnk_cg_) 1 MPI process
            type: more-thuente
            maximum function evaluations=30
            tolerances: ftol=0.0001, rtol=1e-10, gtol=0.9
            total number of function evaluations=0
            total number of gradient evaluations=0
            total number of function/gradient evaluations=0
            Termination reason: CONTINUE_ITERATING
          convergence tolerances: gatol=1e-08,           grtol=1e-08,           steptol=0.,           gttol=0.
          Residual in Function/Gradient:=0.
          Objective value=0.
          total number of iterations=0,                                  (max: 2000)
          Solver never run
        Rejected BFGS updates: 0
        CG steps: 0
        Newton steps: 2
        BFGS steps: 0
        Scaled gradient steps: 0
        Gradient steps: 0
        KSP termination reasons:
          atol: 0
          rtol: 2
          ctol: 0
          negc: 0
          dtol: 0
          iter: 0
          othr: 0
      TaoLineSearch Object: (tao_brgn_subsolver_) 1 MPI process
        type: unit
          Line Search: Unit Step 1..
        maximum function evaluations=30
        tolerances: ftol=0.0001, rtol=1e-10, gtol=0.9
        total number of function evaluations=0
        total number of gradient evaluations=0
        total number of function/gradient evaluations=1
        Termination reason: SUCCESS
      KSP Object: (tao_brgn_subsolver_tao_bnk_) 1 MPI process
        type: stcg
        maximum iterations=10000, initial guess is zero
        tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
        left preconditioning
        using UNPRECONDITIONED norm type for convergence test
      PC Object: (tao_brgn_subsolver_tao_bnk_) 1 MPI process
        type: lmvm
        Mat Object: (tao_brgn_subsolver_tao_bnk_pc_lmvm_) 1 MPI process
          type: lmvmbfgs
          rows=5, cols=5
            Max. storage: 5
            Used storage: 1
            Number of updates: 1
            Number of rejects: 0
            Number of resets: 0
            J0:
              Mat Object: (tao_brgn_subsolver_tao_bnk_pc_lmvm_mat_lmvm_J0_) 1 MPI process
                type: diagonal
                rows=5, cols=5
                  Vec Object: 1 MPI process
                    type: seq
            Rescale type: diagonal
            Rescale history: 1
            Rescale params: alpha=1., beta=0.5, rho=1.
            Rescale convex factor: theta=0.125
        linear system matrix, which is also used to construct the preconditioner:
        Mat Object: 1 MPI process
          type: shell
          rows=5, cols=5
      total KSP iterations: 6
      convergence tolerances: gatol=1e-06,       grtol=1e-08,       steptol=0.,       gttol=0.
      Residual in Function/Gradient:=9.07258e-09
      Objective value=1.28415e-16
      total number of iterations=2,                              (max: 10000)
      total number of function evaluations=5,                      (max: unlimited)
      total number of function/gradient evaluations=5,          (max: unlimited)
      total number of Hessian evaluations=2
      total number of Jacobian evaluations=7
      Solution converged:        ||g(X)|| <= gatol
  convergence tolerances: gatol=1e-06,   grtol=1e-08,   steptol=0.,   gttol=0.
  Residual in Function/Gradient:=0.
  Objective value=1.71859e-08
  total number of iterations=2,                          (max: 10000)
  total number of function evaluations=5,                  (max: unlimited)
  total number of function/gradient evaluations=5,      (max: unlimited)
  total number of Hessian evaluations=2
  Solution converged:    ||g(X)|| <= gatol