27 Jul
2016
27 Jul
'16
11:54 a.m.
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? Cheers Stephan