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<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">Hello,<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">I am running an application code which works with 4, 8 and 18 processes but crashes with 16 processes. I have used MPICH2 and MVAPICH2 (both adhered to the MPI
3.0 standard) and both cause the same problem. I get the following error message:<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">[12]PETSC ERROR: MatSetValues_MPIAIJ() line 564 in src/mat/impls/aij/mpi/mpiaij.c<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">[12]PETSC ERROR: MatAssemblyEnd_MPIAIJ() line 680 in src/mat/impls/aij/mpi/mpiaij.c<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">[12]PETSC ERROR: MatAssemblyEnd() line 4879 in src/mat/interface/matrix.c<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">[12] --> Error in "MatAssemblyEnd()".<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">[12] --> Code: 63<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">However, I do not get this using the Intel MPI (which adheres to the MPI 2.0 standard) library. Any help will be greatly appreciated.
<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">Regards,<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><strong><b><font size="2" color="#00747b" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:#00747B">--------------------------</span></font></b></strong><o:p></o:p></p>
<p class="MsoNormal"><strong><b><font size="2" color="#00747b" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:#00747B">Wadud Miah</span></font></b></strong><br>
<strong><b><font size="2" color="#00747b" face="Arial"><span style="font-size:10.0pt;
font-family:Arial;color:#00747B">HPC, Design and Theoretical Physics</span></font></b></strong><b><span style="font-weight:bold"><br>
</span></b><font size="2" color="#00747b" face="Arial"><span style="font-size:10.0pt;
font-family:Arial;color:#00747B">Direct: 0118 98 56220</span></font>
<br>
<font size="2" color="#00747b" face="Arial"><span style="font-size:10.0pt;
font-family:Arial;color:#00747B">AWE, Aldermaston,
<st1:place w:st="on"><st1:City w:st="on">Reading</st1:City>, <st1:PostalCode w:st="on">
RG7 4PR</st1:PostalCode></st1:place></span></font><o:p></o:p></p>
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