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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The non-linear solution diverged. The final solution seems right and I believe the Jacobian is correct (not 100% certain).
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am not sure if I doing something wrong in the solver setting.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black"> </span></span><span style="color:black">0 SNES Function norm 3.890991210938e-03<span class="apple-converted-space"> </span><o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black"> </span>
</span><span style="color:black">0 KSP Residual norm 9.037762538598e+00<span class="apple-converted-space"> </span><o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black"> </span>
</span><span style="color:black">1 KSP Residual norm 2.120375403775e-01<span class="apple-converted-space"> </span><o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black"> </span>
</span><span style="color:black">2 KSP Residual norm 5.155439334511e-03<span class="apple-converted-space"> </span><o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black"> </span>
</span><span style="color:black">3 KSP Residual norm 1.394364169369e-04<span class="apple-converted-space"> </span><o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black"> </span>
</span><span style="color:black">4 KSP Residual norm 9.233543407204e-06<span class="apple-converted-space"> </span><o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black"> </span>
</span><span style="color:black">Linear solve converged due to CONVERGED_RTOL iterations 4<o:p></o:p></span></p>
<p class="p2"><span style="color:black"><o:p> </o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black">
</span></span><span style="color:black">Line search: Using full step: fnorm 3.890991210938e-03 gnorm 7.701511565083e-06<o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black"> </span>
</span><span style="color:black">1 SNES Function norm 7.701511565083e-06<span class="apple-converted-space"> </span><o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black"> </span>
</span><span style="color:black">0 KSP Residual norm 5.630229687829e-03<span class="apple-converted-space"> </span><o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black"> </span>
</span><span style="color:black">1 KSP Residual norm 1.030475601271e-04<span class="apple-converted-space"> </span><o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black"> </span>
</span><span style="color:black">2 KSP Residual norm 2.576454714319e-06<span class="apple-converted-space"> </span><o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black"> </span>
</span><span style="color:black">3 KSP Residual norm 6.669316846898e-08<span class="apple-converted-space"> </span><o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black"> </span>
</span><span style="color:black">4 KSP Residual norm 3.215810984829e-09<span class="apple-converted-space"> </span><o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black"> </span>
</span><span style="color:black">Linear solve converged due to CONVERGED_RTOL iterations 4<o:p></o:p></span></p>
<p class="p2"><span style="color:black"><o:p> </o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black">
</span></span><span style="color:black">Line search: gnorm after quadratic fit 1.805500533481e-05<o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black">
</span></span><span style="color:black">Line search: Cubic step no good, shrinking lambda, current gnorm 2.563759884284e-05 lambda=3.0804668685096816e-02<o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black">
</span></span><span style="color:black">Line search: Cubic step no good, shrinking lambda, current gnorm 3.332721829751e-05 lambda=3.0804668685096817e-03<o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black">
</span></span><span style="color:black">Line search: Cubic step no good, shrinking lambda, current gnorm 4.102754045833e-05 lambda=3.0804668685096822e-04<o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black">
</span></span><span style="color:black">Line search: Cubic step no good, shrinking lambda, current gnorm 4.872893294880e-05 lambda=3.0804668685096822e-05<o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black">
</span></span><span style="color:black">Line search: Cubic step no good, shrinking lambda, current gnorm 5.643043250787e-05 lambda=3.0804668685096822e-06<o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black">
</span></span><span style="color:black">Line search: Cubic step no good, shrinking lambda, current gnorm 6.413194279696e-05 lambda=3.0804668685096827e-07<o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black">
</span></span><span style="color:black">Line search: Cubic step no good, shrinking lambda, current gnorm 7.183345417492e-05 lambda=3.0804668685096828e-08<o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black">
</span></span><span style="color:black">Line search: Cubic step no good, shrinking lambda, current gnorm 7.953496567312e-05 lambda=3.0804668685096829e-09<o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black">
</span></span><span style="color:black">Line search: Cubic step no good, shrinking lambda, current gnorm 8.723647719173e-05 lambda=3.0804668685096831e-10<o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black">
</span></span><span style="color:black">Line search: Cubic step no good, shrinking lambda, current gnorm 9.493798871875e-05 lambda=3.0804668685096832e-11<o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black">
</span></span><span style="color:black">Line search: Cubic step no good, shrinking lambda, current gnorm 1.026395002516e-04 lambda=3.0804668685096835e-12<o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black">
</span></span><span style="color:black">Line search: Cubic step no good, shrinking lambda, current gnorm 1.103410117889e-04 lambda=3.0804668685096835e-13<o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black">
</span></span><span style="color:black">Line search: unable to find good step length! After 12 tries<span class="apple-converted-space"> </span><o:p></o:p></span></p>
<p class="p1"><span class="apple-converted-space"><span style="color:black">
</span></span><span style="color:black">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<o:p></o:p></span></p>
<p class="p1"><span style="color:black">Nonlinear solve did not converge due to DIVERGED_LINE_SEARCH iterations 1<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thank you for your help.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Kind regards,<o:p></o:p></p>
<p class="MsoNormal">Karthik.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="mso-ligatures:none;mso-fareast-language:EN-GB">-- <o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:#2D2D62;mso-ligatures:none;mso-fareast-language:EN-GB">Dr. Karthik Chockalingam<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:black;mso-ligatures:none;mso-fareast-language:EN-GB">Senior Research Software Engineer</span><span style="font-size:10.5pt;color:black;mso-ligatures:none;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:black;mso-ligatures:none;mso-fareast-language:EN-GB">High Performance Systems Engineering Group</span><span style="font-size:10.5pt;color:black;mso-ligatures:none;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:black;mso-ligatures:none;mso-fareast-language:EN-GB">Hartree Centre | Science and Technology Facilities Council</span><span style="font-size:10.5pt;color:black;mso-ligatures:none;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:#212121;mso-ligatures:none;mso-fareast-language:EN-GB"><a href="mailto:karthikeyan.chockalingam@stfc.ac.uk"><span style="color:#0563C1">karthikeyan.chockalingam@stfc.ac.uk</span></a></span><span style="color:#212121;mso-ligatures:none;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
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