MPI problems

[Gittwell]

Good afternoon!
Could you please help me? I'm trying to use MPI, but I'm getting an error. Depending on the task, I can sometimes run without errors using different numbers of threads—sometimes 2, sometimes 4, sometimes 6.

What could this depend on, and how can I fix it?

[kejacobson]

Hi @Gittwell , a floating point exception usually means there is a division by zero somewhere, often because some expected input is unset. Then the signal 9's mean that that process is killed by the system, in this case I would expect it is because the one process with a floating point exception told the other ranks to stop. Do you know which part of the analysis this signal 8 floating point exception occurs in?