1c4762a1bSJed Brown 2c4762a1bSJed Brown---- Minimum Surface Area Problem ----- 3c4762a1bSJed Brownmx: 10 my: 10 4c4762a1bSJed Brown 5c4762a1bSJed Browniter = 0, Function value 1.46076, Residual: 0.207785 6c4762a1bSJed Browniter = 0, Function value 1.43581, Residual: 0.187715 7c4762a1bSJed Browniter = 1, Function value 1.41867, Residual: 0.0159523 8c4762a1bSJed Browniter = 2, Function value 1.41847, Residual: 0.000148677 9c4762a1bSJed Browniter = 3, Function value 1.41847, Residual: < 1.0e-6 10c4762a1bSJed BrownTao Object: 2 MPI processes 11c4762a1bSJed Brown type: nls 12c4762a1bSJed Brown Newton steps: 3 13c4762a1bSJed Brown BFGS steps: 0 14c4762a1bSJed Brown Gradient steps: 0 15c4762a1bSJed Brown TaoLineSearch Object: 2 MPI processes 16c4762a1bSJed Brown type: more-thuente 17c4762a1bSJed Brown maximum function evaluations=30 18c4762a1bSJed Brown tolerances: ftol=0.0001, rtol=1e-10, gtol=0.9 19c4762a1bSJed Brown total number of function evaluations=0 20c4762a1bSJed Brown total number of gradient evaluations=0 21c4762a1bSJed Brown total number of function/gradient evaluations=1 22c4762a1bSJed Brown Termination reason: 1 23c4762a1bSJed Brown KSP Object: (tao_nls_) 2 MPI processes 24c4762a1bSJed Brown type: stcg 25c4762a1bSJed Brown maximum iterations=15, initial guess is zero 26c4762a1bSJed Brown tolerances: relative=1e-05, absolute=1e-50, divergence=10000. 27c4762a1bSJed Brown left preconditioning 28c4762a1bSJed Brown using UNPRECONDITIONED norm type for convergence test 29c4762a1bSJed Brown PC Object: (tao_nls_) 2 MPI processes 30c4762a1bSJed Brown type: bjacobi 31c4762a1bSJed Brown number of blocks = 2 328d76b567SPatrick Sanan Local solver is the same for all blocks, as in the following KSP and PC objects on rank 0: 33c4762a1bSJed Brown KSP Object: (tao_nls_sub_) 1 MPI processes 34c4762a1bSJed Brown type: preonly 35c4762a1bSJed Brown maximum iterations=10000, initial guess is zero 36c4762a1bSJed Brown tolerances: relative=1e-05, absolute=1e-50, divergence=10000. 37c4762a1bSJed Brown left preconditioning 38c4762a1bSJed Brown using NONE norm type for convergence test 39c4762a1bSJed Brown PC Object: (tao_nls_sub_) 1 MPI processes 40c4762a1bSJed Brown type: ilu 41c4762a1bSJed Brown out-of-place factorization 42c4762a1bSJed Brown 0 levels of fill 43c4762a1bSJed Brown tolerance for zero pivot 2.22045e-14 44c4762a1bSJed Brown matrix ordering: natural 45c4762a1bSJed Brown factor fill ratio given 1., needed 1. 46c4762a1bSJed Brown Factored matrix follows: 47c4762a1bSJed Brown Mat Object: 1 MPI processes 48c4762a1bSJed Brown type: seqaij 49c4762a1bSJed Brown rows=50, cols=50 50c4762a1bSJed Brown package used to perform factorization: petsc 51c4762a1bSJed Brown total: nonzeros=364, allocated nonzeros=364 52c4762a1bSJed Brown not using I-node routines 53c4762a1bSJed Brown linear system matrix = precond matrix: 54*793a3527SPierre Jolivet Mat Object: (tao_nls_sub_) 1 MPI processes 55c4762a1bSJed Brown type: seqaij 56c4762a1bSJed Brown rows=50, cols=50 57c4762a1bSJed Brown total: nonzeros=364, allocated nonzeros=364 58c4762a1bSJed Brown total number of mallocs used during MatSetValues calls=0 59c4762a1bSJed Brown not using I-node routines 60c4762a1bSJed Brown linear system matrix = precond matrix: 61c4762a1bSJed Brown Mat Object: 2 MPI processes 62c4762a1bSJed Brown type: mpiaij 63c4762a1bSJed Brown rows=100, cols=100 64c4762a1bSJed Brown total: nonzeros=784, allocated nonzeros=784 65c4762a1bSJed Brown total number of mallocs used during MatSetValues calls=0 66c4762a1bSJed Brown total KSP iterations: 36 67c4762a1bSJed Brown convergence tolerances: gatol=0.0001, steptol=0., gttol=0. 68c4762a1bSJed Brown Residual in Function/Gradient:=2.64235e-08 69c4762a1bSJed Brown Objective value=1.41847 70c4762a1bSJed Brown total number of iterations=3, (max: 50) 71c4762a1bSJed Brown total number of function/gradient evaluations=10, (max: 4000) 72c4762a1bSJed Brown total number of Hessian evaluations=4 73c4762a1bSJed Brown Solution converged: ||g(X)|| <= gatol 74