<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Wed, Feb 24, 2016 at 3:16 AM, Hoang Giang Bui <span dir="ltr"><<a href="mailto:hgbk2008@gmail.com" target="_blank">hgbk2008@gmail.com</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">Hello<div><br></div><div>Is it possible to reread the options file since I like to experiment different solver configuration during time stepping?</div></div></blockquote><div><br></div><div><a href="http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Sys/PetscOptionsInsertFile.html#PetscOptionsInsertFile">http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Sys/PetscOptionsInsertFile.html#PetscOptionsInsertFile</a><br></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>In addition, I got an error with FIELDSPLIT when a split has zero size (That happens in the first step when one field is disabled). Below is the error message on the proc 0:</div><div><br></div><div><div>[0]PETSC ERROR: ------------------------------------------------------------------------</div><div>[0]PETSC ERROR: Caught signal number 8 FPE: Floating Point Exception,probably divide by zero</div><div>[0]PETSC ERROR: Try option -start_in_debugger or -on_error_attach_debugger</div><div>[0]PETSC ERROR: or see <a href="http://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind" target="_blank">http://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind</a></div><div>[0]PETSC ERROR: or try <a href="http://valgrind.org" target="_blank">http://valgrind.org</a> on GNU/linux and Apple Mac OS X to find memory corruption errors</div><div>[0]PETSC ERROR: configure using --with-debugging=yes, recompile, link, and run </div><div>[0]PETSC ERROR: to get more information on the crash.</div><div>[0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------</div><div>[0]PETSC ERROR: Signal received</div><div>[0]PETSC ERROR: See <a href="http://www.mcs.anl.gov/petsc/documentation/faq.html" target="_blank">http://www.mcs.anl.gov/petsc/documentation/faq.html</a> for trouble shooting.</div><div>[0]PETSC ERROR: Petsc Release Version 3.6.3, Dec, 03, 2015 </div><div>[0]PETSC ERROR: python on a arch-linux2-cxx-opt named bermuda by hbui Wed Feb 24 10:00:34 2016</div><div>[0]PETSC ERROR: Configure options --with-shared-libraries --with-debugging=0 --with-pic --with-clanguage=cxx --download-fblas-lapack=yes --download-ptscotch=yes --download-metis=yes --download-parmetis=yes --download-scalapack=yes --download-mumps=yes --download-hypre=yes --download-ml=yes --download-klu=yes --download-pastix=yes --with-mpi-dir=/opt/openmpi-1.10.1 --prefix=/home/hbui/opt/petsc-3.6.3</div><div>[0]PETSC ERROR: #1 User provided function() line 0 in unknown file</div></div></div></blockquote><div><br></div><div>The SEGV does not occur in PETSc code, but rather your code, as this stack trace shows.</div><div><br></div><div> Thanks,</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><br></div><div>Do you have any comments?</div><span class=""><font color="#888888"><div><br></div><div><div><div><div dir="ltr">Giang</div></div></div>
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</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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