Hello,
The non-linear solution diverged. The final solution seems right and I believe
the Jacobian is correct (not 100% certain).
I am not sure if I doing something wrong in the solver setting.
0 SNES Function norm 3.890991210938e-03
0 KSP Residual norm 9.037762538598e+00
1 KSP Residual norm 2.120375403775e-01
2 KSP Residual norm 5.155439334511e-03
3 KSP Residual norm 1.394364169369e-04
4 KSP Residual norm 9.233543407204e-06
Linear solve converged due to CONVERGED_RTOL iterations 4
Line search: Using full step: fnorm 3.890991210938e-03 gnorm
7.701511565083e-06
1 SNES Function norm 7.701511565083e-06
0 KSP Residual norm 5.630229687829e-03
1 KSP Residual norm 1.030475601271e-04
2 KSP Residual norm 2.576454714319e-06
3 KSP Residual norm 6.669316846898e-08
4 KSP Residual norm 3.215810984829e-09
Linear solve converged due to CONVERGED_RTOL iterations 4
Line search: gnorm after quadratic fit 1.805500533481e-05
Line search: Cubic step no good, shrinking lambda, current gnorm
2.563759884284e-05 lambda=3.0804668685096816e-02
Line search: Cubic step no good, shrinking lambda, current gnorm
3.332721829751e-05 lambda=3.0804668685096817e-03
Line search: Cubic step no good, shrinking lambda, current gnorm
4.102754045833e-05 lambda=3.0804668685096822e-04
Line search: Cubic step no good, shrinking lambda, current gnorm
4.872893294880e-05 lambda=3.0804668685096822e-05
Line search: Cubic step no good, shrinking lambda, current gnorm
5.643043250787e-05 lambda=3.0804668685096822e-06
Line search: Cubic step no good, shrinking lambda, current gnorm
6.413194279696e-05 lambda=3.0804668685096827e-07
Line search: Cubic step no good, shrinking lambda, current gnorm
7.183345417492e-05 lambda=3.0804668685096828e-08
Line search: Cubic step no good, shrinking lambda, current gnorm
7.953496567312e-05 lambda=3.0804668685096829e-09
Line search: Cubic step no good, shrinking lambda, current gnorm
8.723647719173e-05 lambda=3.0804668685096831e-10
Line search: Cubic step no good, shrinking lambda, current gnorm
9.493798871875e-05 lambda=3.0804668685096832e-11
Line search: Cubic step no good, shrinking lambda, current gnorm
1.026395002516e-04 lambda=3.0804668685096835e-12
Line search: Cubic step no good, shrinking lambda, current gnorm
1.103410117889e-04 lambda=3.0804668685096835e-13
Line search: unable to find good step length! After 12 tries
Line search: fnorm=7.7015115650831560e-06, gnorm=1.1034101178892401e-04,
ynorm=6.2052357872955976e-03, minlambda=9.9999999999999998e-13,
lambda=3.0804668685096835e-13, initial slope=-5.9313318983096354e-11
Nonlinear solve did not converge due to DIVERGED_LINE_SEARCH iterations 1
Thank you for your help.
Kind regards,
Karthik.
--
Dr. Karthik Chockalingam
Senior Research Software Engineer
High Performance Systems Engineering Group
Hartree Centre | Science and Technology Facilities Council
[email protected]<mailto:[email protected]>
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