[petsc-users] Newton line search options

[Tang, Qi]

Thanks, Matt. This one is very helpful


On Jul 29, 2022, at 9:24 AM, Matthew Knepley <knepley at gmail.com> wrote:


On Thu, Jul 28, 2022 at 6:16 PM Tang, Qi <tangqi at msu.edu<mailto:tangqi at msu.edu>> wrote:
Hi,

Is there some in depth review on different options related to line search of snes newtonls? Our solvers are sensitive to the choices there, and I could not understand why one works better than the other or how to tune those options. Thanks.

In

@article{BruneKnepleySmithTu15,
  title   = {Composing Scalable Nonlinear Algebraic Solvers},
  author  = {Peter R. Brune and Matthew G. Knepley and Barry F. Smith and Xuemin Tu},
  journal = {SIAM Review},
  volume  = {57},
  number  = {4},
  pages   = {535--565},
  note    = {\url{http://www.mcs.anl.gov/papers/P2010-0112.pdf}<https://urldefense.com/v3/__http://www.mcs.anl.gov/papers/P2010-0112.pdf*7D__;JQ!!HXCxUKc!wsdOxDQ0pllbcoTMbPKGrhcA_V-p0HRh_wC2eTgLQTYFoHheWX0x0wJ-CyDBIjp2q9KAIwXRuzipLw$>},
  url     = {http://www.mcs.anl.gov/papers/P2010-0112.pdf<https://urldefense.com/v3/__http://www.mcs.anl.gov/papers/P2010-0112.pdf__;!!HXCxUKc!wsdOxDQ0pllbcoTMbPKGrhcA_V-p0HRh_wC2eTgLQTYFoHheWX0x0wJ-CyDBIjp2q9KAIwUrADUGWA$>},
  doi     = {10.1137/130936725},
  year    = {2015},
  petsc_uses={KSP},
}

we mention them all and give citations. There is not a lot of predictive theory.

  Thanks,

     Matt


Qi


--
What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.
-- Norbert Wiener

https://www.cse.buffalo.edu/~knepley/<https://urldefense.com/v3/__http://www.cse.buffalo.edu/*knepley/__;fg!!HXCxUKc!wsdOxDQ0pllbcoTMbPKGrhcA_V-p0HRh_wC2eTgLQTYFoHheWX0x0wJ-CyDBIjp2q9KAIwWUnV7ybQ$>
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