Ah sorry, figured it out: I had PETSC_DIR set and it was picking up the wrong libpetsc.so. It's the fluidity binary package that sets PETSC_DIR somewhere in /etc/profile :-/ Sorry for the noise Cheers Stephan On 27/07/16 12:05, Lawrence Mitchell wrote:

On 27/07/16 11:54, Stephan Kramer wrote:

...

Dear firedrake devs

After upgrading my workstation to Ubuntu Xenial, and rebuilding firedrake from scratch I get several segfaults in the running of firedrake tests. The ones I've seen so far were segfaulting in petsc:

kernel -> MatSetValuesLocal() -> ISLocalToGlobalMappingApply()

If I switch on the debug PyOP2 option and run it in gdb, it seems the values passed to MatSetValuesLocal are all sensible. Unfortunately if I rebuild firedrake with a debugging-petsc the tests all pass (i.e. the segfault goes away). Any further hints how to debug this?

Can you run the failing test under valgrind?

Lawrence

_______________________________________________ firedrake mailing list firedrake@imperial.ac.uk https://mailman.ic.ac.uk/mailman/listinfo/firedrake