<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Wed, May 27, 2015 at 11:56 AM, Fande Kong <span dir="ltr"><<a href="mailto:fande.kong@colorado.edu" target="_blank">fande.kong@colorado.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr">Hi all,<div><br></div><div>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.</div></div></blockquote><div><br></div><div><a href="http://www.mcs.anl.gov/petsc/petsc-master/docs/manualpages/SNES/SNESSetMaxNonlinearStepFailures.html">http://www.mcs.anl.gov/petsc/petsc-master/docs/manualpages/SNES/SNESSetMaxNonlinearStepFailures.html</a><br></div><div><br></div><div> Matt</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><div>Thanks,</div><div><br></div><div>Fande,</div></div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature">What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener</div>
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