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 0.00489702 time 0.133796 1615 TS dt 0.0100499 time 0.138693 1716 TS dt 0.0135701 time 0.148743 1817 TS dt 0.0136074 time 0.162313 1918 TS dt 0.00444936 time 0.165984 2019 TS dt 0.00858076 time 0.170433 2120 TS dt 0.013541 time 0.179014 2221 TS dt 0.0136961 time 0.192555 2322 TS dt 0.00532605 time 0.197268 2423 TS dt 0.010851 time 0.202594 2524 TS dt 0.0137439 time 0.213445 2625 TS dt 0.0137662 time 0.227189 2726 TS dt 0.00367174 time 0.22978 2827 TS dt 0.00589472 time 0.233452 2928 TS dt 0.0114309 time 0.239346 3029 TS dt 0.0138401 time 0.250777 3130 TS dt 0.0137489 time 0.264617 3231 TS dt 0.00291312 time 0.266458 3332 TS dt 0.00408174 time 0.269371 3433 TS dt 0.00693935 time 0.273453 3534 TS dt 0.0130397 time 0.280392 3635 TS dt 0.0139752 time 0.293432 3736 TS dt 0.0129219 time 0.307407 38TS Object: 1 MPI process 39 type: arkimex 40 ARK IMEX 3 41 Stiff abscissa ct = 0.000000 0.871733 0.600000 1.000000 42 Fully implicit: no 43 Stiffly accurate: yes 44 Explicit first stage: yes 45 FSAL property: yes 46 Nonstiff abscissa c = 0.000000 0.871733 0.600000 1.000000 47 initial time step=8.33333e-06 48 maximum steps=1000 49 maximum time=0.3 50 maximum number of step rejections=10 51 maximum number of SNES failures allowed=1 52 using relative error tolerance of 0.0001, using absolute error tolerance of 0.0001 53 TSAdapt Object: 1 MPI process 54 type: basic 55 safety factor 0.9 56 extra safety factor after step rejection 0.5 57 clip fastest increase 10. 58 clip fastest decrease 0.1 59 maximum allowed timestep 1e+20 60 minimum allowed timestep 1e-20 61 maximum solution absolute value to be ignored -1. 62 SNES Object: 1 MPI process 63 type: newtonls 64 maximum iterations=50, maximum function evaluations=10000 65 tolerances: relative=1e-08, absolute=1e-50, solution=1e-08 66 norm schedule ALWAYS 67 SNESLineSearch Object: 1 MPI process 68 type: bt 69 interpolation: cubic 70 alpha=1.000000e-04 71 maxlambda=1.000000e+00, minlambda=1.000000e-12 72 tolerances: relative=1.000000e-08, absolute=1.000000e-15, lambda=1.000000e-08 73 maximum iterations=40 74 KSP Object: 1 MPI process 75 type: gmres 76 restart=30, using classical (unmodified) Gram-Schmidt orthogonalization with no iterative refinement 77 happy breakdown tolerance=1e-30 78 maximum iterations=10000, initial guess is zero 79 tolerances: relative=1e-05, absolute=1e-50, divergence=10000. 80 left preconditioning 81 using PRECONDITIONED norm type for convergence test 82 PC Object: 1 MPI process 83 type: mg 84 type is MULTIPLICATIVE, levels=3 cycles=v 85 Cycles per PCApply=1 86 Not using Galerkin computed coarse grid matrices 87 Coarse grid solver -- level 0 ------------------------------- 88 KSP Object: (mg_coarse_) 1 MPI process 89 type: preonly 90 maximum iterations=10000, initial guess is zero 91 tolerances: relative=1e-05, absolute=1e-50, divergence=10000. 92 left preconditioning 93 not checking for convergence 94 PC Object: (mg_coarse_) 1 MPI process 95 type: lu 96 out-of-place factorization 97 tolerance for zero pivot 2.22045e-14 98 using diagonal shift on blocks to prevent zero pivot [INBLOCKS] 99 matrix ordering: nd 100 factor fill ratio given 5., needed 1.63333 101 Factored matrix: 102 Mat Object: (mg_coarse_) 1 MPI process 103 type: seqaij 104 rows=60, cols=60 105 package used to perform factorization: petsc 106 total: nonzeros=294, allocated nonzeros=294 107 not using I-node routines 108 linear system matrix, which is also used to construct the preconditioner: 109 Mat Object: 1 MPI process 110 type: seqaij 111 rows=60, cols=60 112 total: nonzeros=180, allocated nonzeros=180 113 not using I-node routines 114 Down solver (pre-smoother) on level 1 ------------------------------- 115 KSP Object: (mg_levels_1_) 1 MPI process 116 type: chebyshev 117 Chebyshev polynomial of first kind 118 eigenvalue targets used: min 0.1, max 1.1 119 eigenvalues estimated via gmres: min 1., max 1. 120 eigenvalues estimated using gmres with transform: [0. 0.1; 0. 1.1] 121 KSP Object: (mg_levels_1_esteig_) 1 MPI process 122 type: gmres 123 restart=30, using classical (unmodified) Gram-Schmidt orthogonalization with no iterative refinement 124 happy breakdown tolerance=1e-30 125 maximum iterations=10, initial guess is zero 126 tolerances: relative=1e-12, absolute=1e-50, divergence=10000. 127 left preconditioning 128 using PRECONDITIONED norm type for convergence test 129 estimating eigenvalues using a noisy random number generated right-hand side 130 maximum iterations=3, nonzero initial guess 131 tolerances: relative=1e-05, absolute=1e-50, divergence=10000. 132 left preconditioning 133 not checking for convergence 134 PC Object: (mg_levels_1_) 1 MPI process 135 type: sor 136 type = local_symmetric, iterations = 1, local iterations = 1, omega = 1. 137 linear system matrix, which is also used to construct the preconditioner: 138 Mat Object: 1 MPI process 139 type: seqaij 140 rows=120, cols=120 141 total: nonzeros=360, allocated nonzeros=360 142 not using I-node routines 143 Up solver (post-smoother) same as down solver (pre-smoother) 144 Down solver (pre-smoother) on level 2 ------------------------------- 145 KSP Object: (mg_levels_2_) 1 MPI process 146 type: chebyshev 147 Chebyshev polynomial of first kind 148 eigenvalue targets used: min 0.1, max 1.1 149 eigenvalues estimated via gmres: min 1., max 1. 150 eigenvalues estimated using gmres with transform: [0. 0.1; 0. 1.1] 151 KSP Object: (mg_levels_2_esteig_) 1 MPI process 152 type: gmres 153 restart=30, using classical (unmodified) Gram-Schmidt orthogonalization with no iterative refinement 154 happy breakdown tolerance=1e-30 155 maximum iterations=10, initial guess is zero 156 tolerances: relative=1e-12, absolute=1e-50, divergence=10000. 157 left preconditioning 158 using PRECONDITIONED norm type for convergence test 159 estimating eigenvalues using a noisy random number generated right-hand side 160 maximum iterations=3, nonzero initial guess 161 tolerances: relative=1e-05, absolute=1e-50, divergence=10000. 162 left preconditioning 163 not checking for convergence 164 PC Object: (mg_levels_2_) 1 MPI process 165 type: sor 166 type = local_symmetric, iterations = 1, local iterations = 1, omega = 1. 167 linear system matrix, which is also used to construct the preconditioner: 168 Mat Object: 1 MPI process 169 type: seqaij 170 rows=240, cols=240 171 total: nonzeros=720, allocated nonzeros=720 172 not using I-node routines 173 Up solver (post-smoother) same as down solver (pre-smoother) 174 linear system matrix, which is also used to construct the preconditioner: 175 Mat Object: 1 MPI process 176 type: seqaij 177 rows=240, cols=240 178 total: nonzeros=720, allocated nonzeros=720 179 not using I-node routines 180