[lammps-users] killed by signal 11 ?

please always keep the list in cc:

Dear Axel,

Thank you for your kind help.

actually, i have not provided any help,
since you didn't provide any information.

It is really confusing that the input file works well for both -np 4 and -np 16.
However, it fails for -np 8.

no, that is not strange at all.

keep in mind that lammps uses domain decomposition!
so your atoms are distributed differently across the processors
in those cases, and whatever you are seeing that is actually
causing the problem (i would suspect "lost atoms" due to
a bad starting configuration, but that is just a blind guess) is
only happening with the split that happens at -np 8.