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<p class="MsoNormal">Hi everyone,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I need to run a case in Nek with a large number of elements (~ 1 million).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The same problem with a small number of elements works fine, but on the larger grid<o:p></o:p></p>
<p class="MsoNormal">the solver exits with the following error: <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> EXIT: Problem size requires AMG solver 1</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Going through the code<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"># if (imode.eq.0 .and. nelgt.gt.350000) call exitti(<o:p></o:p></p>
<p class="MsoNormal"># $ 'Problem size requires AMG solver$',1)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">It seems that over 350000 elements, you need to use the AMG solver.<o:p></o:p></p>
<p class="MsoNormal">Is that correct? Or is there any workaround to not use the AMG.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:NL">Kind regards,<b><o:p></o:p></b></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:NL">Dante De Santis<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-language:NL"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#7F7F7F;mso-fareast-language:NL">Research Consultant Computational Physics 4 Solutions<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#7F7F7F;mso-fareast-language:NL">[NRG - Research and Innovation Unit]<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:NL"><o:p> </o:p></span></p>
<p class="MsoNormal"><img width="62" height="50" id="Afbeelding_x0020_1" src="cid:image001.jpg@01D3FE42.19A0EDB0" alt="Logo_NRG_PMS_355-186_C"><b><span style="color:#1F497D;mso-fareast-language:NL"><o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial","sans-serif";color:#7F7F7F;mso-fareast-language:NL">Westerduinweg 3, 1755 LE PETTEN
<br>
P.O. Box 25, 1755 ZG PETTEN <br>
THE NETHERLANDS<br>
phone: +31(0) 224 56 4656<br>
e-mail: </span><span style="font-size:8.0pt;font-family:"Arial","sans-serif";mso-fareast-language:NL"><a href="mailto:desantis@nrg.eu"><span style="color:blue">desantis@nrg.eu</span></a><span style="color:#7F7F7F">
<o:p></o:p></span></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:8.0pt;font-family:"Arial","sans-serif";color:#7F7F7F;mso-fareast-language:NL">Visit NRG at
</span><span lang="NL"><a href="http://www.nrg.eu/"><span lang="EN-US" style="font-size:8.0pt;font-family:"Arial","sans-serif";color:#7F7F7F;mso-fareast-language:NL">www.nrg.eu</span></a></span><span style="font-size:8.0pt;font-family:"Arial","sans-serif";color:#7F7F7F;mso-fareast-language:NL"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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