10 TS dt 8.33333e-06 time 0. 21 TS dt 8.33333e-05 time 8.33333e-06 32 TS dt 0.000833333 time 9.16667e-05 43 TS dt 0.00833333 time 0.000925 54 TS dt 0.0132237 time 0.00925833 65 TS dt 0.0132566 time 0.022482 76 TS dt 0.0132919 time 0.0357387 87 TS dt 0.0133226 time 0.0490305 98 TS dt 0.0133482 time 0.0623531 109 TS dt 0.0133897 time 0.0757014 1110 TS dt 0.0134319 time 0.0890911 1211 TS dt 0.0134682 time 0.102523 1312 TS dt 0.0134977 time 0.115991 1413 TS dt 0.0135238 time 0.129489 1514 TS dt 0.00494253 time 0.133832 1615 TS dt 0.0101592 time 0.138775 1716 TS dt 0.0135719 time 0.148934 1817 TS dt 0.0136045 time 0.162506 1918 TS dt 0.00437533 time 0.16608 2019 TS dt 0.00831549 time 0.170455 2120 TS dt 0.013504 time 0.17877 2221 TS dt 0.0136927 time 0.192274 2322 TS dt 0.00553705 time 0.19724 2423 TS dt 0.010971 time 0.202777 2524 TS dt 0.0137439 time 0.213748 2625 TS dt 0.0137512 time 0.227492 2726 TS dt 0.00340744 time 0.229825 2827 TS dt 0.00522351 time 0.233233 2928 TS dt 0.00987025 time 0.238456 3029 TS dt 0.0138095 time 0.248327 3130 TS dt 0.0138628 time 0.262136 3231 TS dt 0.00395333 time 0.264939 3332 TS dt 0.00660476 time 0.268892 3433 TS dt 0.0126727 time 0.275497 3534 TS dt 0.0139527 time 0.288169 3635 TS dt 0.0132832 time 0.302122 37TS Object: 1 MPI process 38 type: arkimex 39 ARK IMEX 3 40 Stiff abscissa ct = 0.000000 0.871733 0.600000 1.000000 41 Fully implicit: no 42 Stiffly accurate: yes 43 Explicit first stage: yes 44 FSAL property: yes 45 Nonstiff abscissa c = 0.000000 0.871733 0.600000 1.000000 46 initial time step=8.33333e-06 47 maximum steps=1000 48 maximum time=0.3 49 maximum number of step rejections=10 50 maximum number of SNES failures allowed=1 51 using relative error tolerance of 0.0001, using absolute error tolerance of 0.0001 52 TSAdapt Object: 1 MPI process 53 type: basic 54 safety factor 0.9 55 extra safety factor after step rejection 0.5 56 clip fastest increase 10. 57 clip fastest decrease 0.1 58 maximum allowed timestep 1e+20 59 minimum allowed timestep 1e-20 60 maximum solution absolute value to be ignored -1. 61 SNES Object: 1 MPI process 62 type: newtonls 63 maximum iterations=50, maximum function evaluations=10000 64 tolerances: relative=1e-08, absolute=1e-50, solution=1e-08 65 norm schedule ALWAYS 66 SNESLineSearch Object: 1 MPI process 67 type: bt 68 interpolation: cubic 69 alpha=1.000000e-04 70 maxlambda=1.000000e+00, minlambda=1.000000e-12 71 tolerances: relative=1.000000e-08, absolute=1.000000e-15, lambda=1.000000e-08 72 maximum iterations=40 73 KSP Object: 1 MPI process 74 type: gmres 75 restart=30, using classical (unmodified) Gram-Schmidt orthogonalization with no iterative refinement 76 happy breakdown tolerance=1e-30 77 maximum iterations=10000, initial guess is zero 78 tolerances: relative=1e-05, absolute=1e-50, divergence=10000. 79 left preconditioning 80 using PRECONDITIONED norm type for convergence test 81 PC Object: 1 MPI process 82 type: mg 83 type is MULTIPLICATIVE, levels=3 cycles=v 84 Cycles per PCApply=1 85 Not using Galerkin computed coarse grid matrices 86 Coarse grid solver -- level 0 ------------------------------- 87 KSP Object: (mg_coarse_) 1 MPI process 88 type: preonly 89 maximum iterations=10000, initial guess is zero 90 tolerances: relative=1e-05, absolute=1e-50, divergence=10000. 91 left preconditioning 92 not checking for convergence 93 PC Object: (mg_coarse_) 1 MPI process 94 type: lu 95 out-of-place factorization 96 tolerance for zero pivot 2.22045e-14 97 using diagonal shift on blocks to prevent zero pivot [INBLOCKS] 98 matrix ordering: nd 99 factor fill ratio given 5., needed 1.63333 100 Factored matrix: 101 Mat Object: (mg_coarse_) 1 MPI process 102 type: seqaij 103 rows=60, cols=60 104 package used to perform factorization: petsc 105 total: nonzeros=294, allocated nonzeros=294 106 not using I-node routines 107 linear system matrix, which is also used to construct the preconditioner: 108 Mat Object: 1 MPI process 109 type: seqaij 110 rows=60, cols=60 111 total: nonzeros=180, allocated nonzeros=180 112 not using I-node routines 113 Down solver (pre-smoother) on level 1 ------------------------------- 114 KSP Object: (mg_levels_1_) 1 MPI process 115 type: chebyshev 116 Chebyshev polynomial of first kind 117 eigenvalue targets used: min 0.1, max 1.1 118 eigenvalues estimated via gmres: min 1., max 1. 119 eigenvalues estimated using gmres with transform: [0. 0.1; 0. 1.1] 120 KSP Object: (mg_levels_1_esteig_) 1 MPI process 121 type: gmres 122 restart=30, using classical (unmodified) Gram-Schmidt orthogonalization with no iterative refinement 123 happy breakdown tolerance=1e-30 124 maximum iterations=10, initial guess is zero 125 tolerances: relative=1e-12, absolute=1e-50, divergence=10000. 126 left preconditioning 127 using PRECONDITIONED norm type for convergence test 128 estimating eigenvalues using a noisy random number generated right-hand side 129 maximum iterations=3, nonzero initial guess 130 tolerances: relative=1e-05, absolute=1e-50, divergence=10000. 131 left preconditioning 132 not checking for convergence 133 PC Object: (mg_levels_1_) 1 MPI process 134 type: sor 135 type = local_symmetric, iterations = 1, local iterations = 1, omega = 1. 136 linear system matrix, which is also used to construct the preconditioner: 137 Mat Object: 1 MPI process 138 type: seqaij 139 rows=120, cols=120 140 total: nonzeros=360, allocated nonzeros=360 141 not using I-node routines 142 Up solver (post-smoother) same as down solver (pre-smoother) 143 Down solver (pre-smoother) on level 2 ------------------------------- 144 KSP Object: (mg_levels_2_) 1 MPI process 145 type: chebyshev 146 Chebyshev polynomial of first kind 147 eigenvalue targets used: min 0.1, max 1.1 148 eigenvalues estimated via gmres: min 1., max 1. 149 eigenvalues estimated using gmres with transform: [0. 0.1; 0. 1.1] 150 KSP Object: (mg_levels_2_esteig_) 1 MPI process 151 type: gmres 152 restart=30, using classical (unmodified) Gram-Schmidt orthogonalization with no iterative refinement 153 happy breakdown tolerance=1e-30 154 maximum iterations=10, initial guess is zero 155 tolerances: relative=1e-12, absolute=1e-50, divergence=10000. 156 left preconditioning 157 using PRECONDITIONED norm type for convergence test 158 estimating eigenvalues using a noisy random number generated right-hand side 159 maximum iterations=3, nonzero initial guess 160 tolerances: relative=1e-05, absolute=1e-50, divergence=10000. 161 left preconditioning 162 not checking for convergence 163 PC Object: (mg_levels_2_) 1 MPI process 164 type: sor 165 type = local_symmetric, iterations = 1, local iterations = 1, omega = 1. 166 linear system matrix, which is also used to construct the preconditioner: 167 Mat Object: 1 MPI process 168 type: seqaij 169 rows=240, cols=240 170 total: nonzeros=720, allocated nonzeros=720 171 not using I-node routines 172 Up solver (post-smoother) same as down solver (pre-smoother) 173 linear system matrix, which is also used to construct the preconditioner: 174 Mat Object: 1 MPI process 175 type: seqaij 176 rows=240, cols=240 177 total: nonzeros=720, allocated nonzeros=720 178 not using I-node routines 179