[petsc-dev] segfaults with mpich 3.2 and clang (Apple LLVM 8.0.0, clang 800.0.42.1)

[Barry Smith]

  I am using MPICH 3.2 with 8.2.1 and typically run the entire PETSc test suite. Have not observed problems. Maybe upgrade Xcode first?


> On Feb 10, 2017, at 1:59 PM, Brad Aagaard <baagaard at usgs.gov> wrote:
> 
> Are there any known issues with mpich3.2 and clang (Apple LLVM 8.0.0, clang 800.0.42.1)? I am getting segfaults in MPI routines within PETSc.
> The error is: write_line error; fd=-1 buf=:cmd=abort exitcode=59, which appears to be similar to the recent DMPlexCreateExodusFromFile() does not work on macOS Sierra thread
> https://lists.mcs.anl.gov/mailman/htdig/petsc-users/2017-January/031463.html
> 
> However, I am not using any Darwin packaging system like homebrew. I am building PETSc via the PyLith installer which builds mpich, NetCDF, HDF5, etc from scratch using the Apple's clang. If I swap mpich3.2 for mpich3.1.3, these segfaults go away, so I am inclined to blame mpich3.2.
> 
> If this is a unknown or undiagnosed issue, I will try a standalone PETSc install to try to reproduce it.
> 
> Thanks,
> Brad
> 
>