1PetscRegressor Object: 1 MPI process 2 type: linear 3 PetscRegressor Linear Type: ols 4 KSP Object: (regressor_linear_) 1 MPI process 5 type: lsqr 6 standard error not computed 7 using inexact matrix norm 8 maximum iterations=10000, initial guess is zero 9 tolerances: relative=1e-05, absolute=1e-50, divergence=10000. 10 left preconditioning 11 using UNPRECONDITIONED norm type for convergence test 12 PC Object: (regressor_linear_) 1 MPI process 13 type: none 14 linear system matrix, followed by the matrix used to construct the preconditioner: 15 Mat Object: 1 MPI process 16 type: composite 17 rows=10, cols=10 18 Mat Object: 1 MPI process 19 type: normal 20 rows=10, cols=10 21 total KSP iterations: 1 22 Intercept=5.55112e-17 23