[petsc-users] SNES Nonlinear solve did not converge due to DIVERGED_LINE_SEARCH

[Fande Kong]

Hi all,

I was wondering if it is possible to let SNES  continue regardless of the
divergency of linear search, even though the residual only decreases a
little bit. In my test, if basic linear search is used, the snes converges
and  needs more iterations. But, BT does not work well although it
can guarantee a decrease in the residual.

Thanks,

Fande,
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