
1-D Delay Eigenproblem, n=128, tau=0.001

NEP prefix is currently: check_myprefix_

  Convergence history for check_myprefix_ solve.
  6 NEP converged value (error) #0 0.808885 (removed)
NEP Object: (check_myprefix_) 1 MPI processes
  type: narnoldi
    updating the preconditioner every 1 iterations
    KSP Object: 1 MPI processes
      type: bcgs
      maximum iterations=10000, initial guess is zero
      left preconditioning
      using PRECONDITIONED norm type for convergence test
    PC Object: 1 MPI processes
      type: bjacobi
        number of blocks = 1
        Local solver information for first block is in the following KSP and PC objects on rank 0:
        Use -ksp_view ::ascii_info_detail to display information for all blocks
        KSP Object: (sub_) 1 MPI processes
          type: preonly
          maximum iterations=10000, initial guess is zero
          left preconditioning
          using NONE norm type for convergence test
        PC Object: (sub_) 1 MPI processes
          type: ilu
            out-of-place factorization
            0 levels of fill
            matrix ordering: natural
            factor fill ratio given 1., needed 1.
              Factored matrix follows:
                Mat Object: 1 MPI processes
                  type: seqaij
                  rows=128, cols=128
                  package used to perform factorization: petsc
                  total: nonzeros=382, allocated nonzeros=382
                    not using I-node routines
          linear system matrix = precond matrix:
          Mat Object: (sub_) 1 MPI processes
            type: seqaij
            rows=128, cols=128
            total: nonzeros=382, allocated nonzeros=382
            total number of mallocs used during MatSetValues calls =0
              not using I-node routines
      linear system matrix = precond matrix:
      Mat Object: (sub_) 1 MPI processes
        type: seqaij
        rows=128, cols=128
        total: nonzeros=382, allocated nonzeros=382
        total number of mallocs used during MatSetValues calls =0
          not using I-node routines
  problem type: general nonlinear eigenvalue problem
  nonlinear operator in split form
    number of terms: 3
    nonzero pattern of the matrices: SUBSET
  selected portion of the spectrum: closest to target: 0. (in magnitude)
  number of eigenvalues (nev): 1
  number of column vectors (ncv): 16
  maximum dimension of projected problem (mpd): 16
  maximum number of iterations: 16
  convergence test: relative to the eigenvalue
  dimension of user-provided initial space: 1
BV Object: (check_myprefix_) 1 MPI processes
  type: svec
  16 columns of global length 128
  vector orthogonalization method: classical Gram-Schmidt
  orthogonalization refinement: if needed (eta: 0.7071)
  block orthogonalization method: GS
  doing matmult as a single matrix-matrix product
DS Object: (check_myprefix_) 1 MPI processes
  type: nhep
 Number of requested eigenvalues: 1
 N-Arnoldi lag parameter: 1
     0.80889

