[petsc-users] MUMPS failure

[Barry Smith]

   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. 

   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. 

    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?

     valgrind is the gold standard for detecting memory corruption. 

Barry


> On Mar 22, 2021, at 12:56 PM, Chris Hewson <chris at resfrac.com> wrote:
> 
> Hi All,
> 
> 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:
> 
> https://lists.mcs.anl.gov/pipermail/petsc-users/2018-October/036372.html <https://lists.mcs.anl.gov/pipermail/petsc-users/2018-October/036372.html>
> 
> 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?
> 
> Thanks,
> 
> Chris Hewson
> Senior Reservoir Simulation Engineer
> ResFrac
> +1.587.575.9792

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20210322/d06e4502/attachment-0001.html>