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<p class="MsoNormal"><span style="font-family:"Courier New"">Dear all, <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New"">I am doing a weak scaling test using geometric multigrid. With increasing the number of cells, and the number of processes, I also increase the number of multigrid levels. With 64 cores,
12288 cells in x-direction and 11 multigrid levels, I see error message [1]. <o:p>
</o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New"">Could you help me understand what is happening here?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New"">The characteristics of the weak scaling test are summarized in table [2]. Refinement level 7-9 went through fine.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New"">Thank you!<br>
Henrik<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New"">[1]<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New"">[0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New"">[0]PETSC ERROR: Argument out of range<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New"">[0]PETSC ERROR: Partition in x direction is too fine! 12 16<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New"">[0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html for trouble shooting.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New"">[0]PETSC ERROR: Petsc Development GIT revision: v3.8.2-48-g851ec02 GIT Date: 2017-12-05 09:52:17 -0600<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New"">[0]PETSC ERROR: shem_fw64gnu_const.x on a gnu_openmpi named linuxihfc033.rz.RWTH-Aachen.DE by hb111949 Wed Jan 10 11:48:09 2018<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New"">[0]PETSC ERROR: Configure options --download-fblaslapack --with-cc=mpicc -with-fc=mpif90 --with-cxx=mpicxx --download-hypre --download-superlu_dist
--download-suitesparse --download-scalapack --download-blacs --download-hdf5 --download-parmetis --download-metis --with-debugging=0 --download-mumps<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New"">[0]PETSC ERROR: #1 DMSetUp_DA_3D() line 299 in /rwthfs/rz/cluster/work/hb111949/Code/petsc/src/dm/impls/da/da3.c<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New"">[0]PETSC ERROR: #2 DMSetUp_DA() line 25 in /rwthfs/rz/cluster/work/hb111949/Code/petsc/src/dm/impls/da/dareg.c<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New"">[0]PETSC ERROR: #3 DMSetUp() line 720 in /rwthfs/rz/cluster/work/hb111949/Code/petsc/src/dm/interface/dm.c<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New"">[0]PETSC ERROR: #4 DMCoarsen_DA() line 1203 in /rwthfs/rz/cluster/work/hb111949/Code/petsc/src/dm/impls/da/da.c<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New"">[0]PETSC ERROR: #5 DMCoarsen() line 2427 in /rwthfs/rz/cluster/work/hb111949/Code/petsc/src/dm/interface/dm.c<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New"">[0]PETSC ERROR: #6 PCSetUp_MG() line 618 in /rwthfs/rz/cluster/work/hb111949/Code/petsc/src/ksp/pc/impls/mg/mg.c<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New"">[0]PETSC ERROR: #7 PCSetUp() line 924 in /rwthfs/rz/cluster/work/hb111949/Code/petsc/src/ksp/pc/interface/precon.c<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New"">[0]PETSC ERROR: #8 KSPSetUp() line 381 in /rwthfs/rz/cluster/work/hb111949/Code/petsc/src/ksp/ksp/interface/itfunc.c<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New"">[0]PETSC ERROR: #9 KSPSolve() line 612 in /rwthfs/rz/cluster/work/hb111949/Code/petsc/src/ksp/ksp/interface/itfunc.c<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New"">[0]PETSC ERROR: #10 SNESSolve_NEWTONLS() line 224 in /rwthfs/rz/cluster/work/hb111949/Code/petsc/src/snes/impls/ls/ls.c<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New"">[0]PETSC ERROR: #11 SNESSolve() line 4179 in /rwthfs/rz/cluster/work/hb111949/Code/petsc/src/snes/interface/snes.c</span><span lang="EN-US" style="font-family:"Courier New""><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New"">[2]<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New""><o:p> </o:p></span></p>
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="0" style="width:13.0cm;border-collapse:collapse">
<tbody>
<tr style="height:15.0pt">
<td width="123" nowrap="" valign="bottom" style="width:92.0pt;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal"><span style="color:black;mso-fareast-language:DE"># refinement level<o:p></o:p></span></p>
</td>
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<p class="MsoNormal"><span style="color:black;mso-fareast-language:DE"># cores<o:p></o:p></span></p>
</td>
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<p class="MsoNormal"><span style="color:black;mso-fareast-language:DE"># cells in x<o:p></o:p></span></p>
</td>
<td width="76" nowrap="" valign="bottom" style="width:2.0cm;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal"><span style="color:black;mso-fareast-language:DE"># cells in y<o:p></o:p></span></p>
</td>
<td width="76" nowrap="" valign="bottom" style="width:2.0cm;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal"><span style="color:black;mso-fareast-language:DE"># cells in z<o:p></o:p></span></p>
</td>
<td width="85" nowrap="" valign="bottom" style="width:63.75pt;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal"><span style="color:black;mso-fareast-language:DE"># mg levels<o:p></o:p></span></p>
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<tr style="height:15.0pt">
<td width="123" nowrap="" valign="bottom" style="width:92.0pt;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">7<o:p></o:p></span></p>
</td>
<td width="57" nowrap="" valign="bottom" style="width:42.7pt;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">1<o:p></o:p></span></p>
</td>
<td width="76" nowrap="" valign="bottom" style="width:2.0cm;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">1536<o:p></o:p></span></p>
</td>
<td width="76" nowrap="" valign="bottom" style="width:2.0cm;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">1<o:p></o:p></span></p>
</td>
<td width="76" nowrap="" valign="bottom" style="width:2.0cm;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">256<o:p></o:p></span></p>
</td>
<td width="85" nowrap="" valign="bottom" style="width:63.75pt;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">8<o:p></o:p></span></p>
</td>
</tr>
<tr style="height:15.0pt">
<td width="123" nowrap="" valign="bottom" style="width:92.0pt;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">8<o:p></o:p></span></p>
</td>
<td width="57" nowrap="" valign="bottom" style="width:42.7pt;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">4<o:p></o:p></span></p>
</td>
<td width="76" nowrap="" valign="bottom" style="width:2.0cm;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">3072<o:p></o:p></span></p>
</td>
<td width="76" nowrap="" valign="bottom" style="width:2.0cm;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">1<o:p></o:p></span></p>
</td>
<td width="76" nowrap="" valign="bottom" style="width:2.0cm;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">512<o:p></o:p></span></p>
</td>
<td width="85" nowrap="" valign="bottom" style="width:63.75pt;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">9<o:p></o:p></span></p>
</td>
</tr>
<tr style="height:15.0pt">
<td width="123" nowrap="" valign="bottom" style="width:92.0pt;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">9<o:p></o:p></span></p>
</td>
<td width="57" nowrap="" valign="bottom" style="width:42.7pt;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">16<o:p></o:p></span></p>
</td>
<td width="76" nowrap="" valign="bottom" style="width:2.0cm;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">6144<o:p></o:p></span></p>
</td>
<td width="76" nowrap="" valign="bottom" style="width:2.0cm;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">1<o:p></o:p></span></p>
</td>
<td width="76" nowrap="" valign="bottom" style="width:2.0cm;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">1024<o:p></o:p></span></p>
</td>
<td width="85" nowrap="" valign="bottom" style="width:63.75pt;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">10<o:p></o:p></span></p>
</td>
</tr>
<tr style="height:15.0pt">
<td width="123" nowrap="" valign="bottom" style="width:92.0pt;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">10<o:p></o:p></span></p>
</td>
<td width="57" nowrap="" valign="bottom" style="width:42.7pt;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">64<o:p></o:p></span></p>
</td>
<td width="76" nowrap="" valign="bottom" style="width:2.0cm;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">12288<o:p></o:p></span></p>
</td>
<td width="76" nowrap="" valign="bottom" style="width:2.0cm;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">1<o:p></o:p></span></p>
</td>
<td width="76" nowrap="" valign="bottom" style="width:2.0cm;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">2048<o:p></o:p></span></p>
</td>
<td width="85" nowrap="" valign="bottom" style="width:63.75pt;padding:0cm 3.5pt 0cm 3.5pt;height:15.0pt">
<p class="MsoNormal" align="right" style="text-align:right"><span style="color:black;mso-fareast-language:DE">11<o:p></o:p></span></p>
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</tr>
</tbody>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New""><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New";mso-fareast-language:DE">--
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New";mso-fareast-language:DE">Dipl.-Math. Henrik Büsing<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New";mso-fareast-language:DE">Institute for Applied Geophysics and Geothermal Energy<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New";mso-fareast-language:DE">E.ON Energy Research Center<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New";mso-fareast-language:DE">RWTH Aachen University<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New";mso-fareast-language:DE">------------------------------------------------------<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New";mso-fareast-language:DE">Mathieustr. 10 | Tel +49 (0)241 80 49907<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New";mso-fareast-language:DE">52074 Aachen, Germany | Fax +49 (0)241 80 49889<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New";mso-fareast-language:DE">------------------------------------------------------<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New";mso-fareast-language:DE">http://www.eonerc.rwth-aachen.de/GGE<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New";mso-fareast-language:DE">hbuesing@eonerc.rwth-aachen.de<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New";mso-fareast-language:DE">------------------------------------------------------<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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