<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class=""><br class=""></div> Version of PETSc and MUMPS? We fixed a bug in MUMPs a couple years ago that produced error messages as below. Please confirm you are using the latest PETSc and MUMPS. <div class=""><br class=""></div><div class=""> You can run your production version with the option -malloc_debug ; this will slow it down a bit but if there is memory corruption it may detect it and indicate the problematic error. </div><div class=""><br class=""></div><div class=""> One also has to be careful about the size of the problem passed to MUMPs since PETSc/MUMPs does not fully support using all 64 bit integers. Is it only crashing for problems near 2 billion entries in the sparse matrix?</div><div class=""><br class=""></div><div class=""> valgrind is the gold standard for detecting memory corruption. </div><div class=""><br class=""></div><div class="">Barry</div><div class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Mar 22, 2021, at 12:56 PM, Chris Hewson <<a href="mailto:chris@resfrac.com" class="">chris@resfrac.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Hi All,<div class=""><br class=""></div><div class="">I have been having a problem with MUMPS randomly crashing in our program and causing the entire program to crash. I am compiling in -O2 optimization mode and using --download-mumps etc. to compile PETSc. If I rerun the program, 95%+ of the time I can't reproduce the error. It seems to be a similar issue to this thread:</div><div class=""><br class=""></div><div class=""><a href="https://lists.mcs.anl.gov/pipermail/petsc-users/2018-October/036372.html" class="">https://lists.mcs.anl.gov/pipermail/petsc-users/2018-October/036372.html</a></div><div class=""><br class=""></div><div class="">Similar to the resolution there I am going to try and increase icntl_14 and see if that resolves the issue. Any other thoughts on this?</div><div class=""><br class=""></div><div class="">Thanks,</div><div class=""><div class=""><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><b class=""><br class=""></b></div><div dir="ltr" class=""><b class="">Chris Hewson</b><div class="">Senior Reservoir Simulation Engineer</div><div class="">ResFrac</div><div class="">+1.587.575.9792</div></div></div></div></div></div></div></div></div></div>
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