lammps needs to be recompiled with openmpi for merlin6/RHEL 7.6
lammps/2018.11_merlin stable
creates SIGSEGV after a few hours when using merlin6 (runs tably on merlin5 RHEL 7.4). A test with the newly compiled openmpi-3.1.4_merlin6 was positive. Need to provide this as a new module release.