Failure due to "Maximum Gauss-Seidel iterations encountered"

Hi all,

I’m a brand new openmc user. I have an eigenvalue simulation that runs for four batches and then crashes. Any quick ideas on what might be going on? I’ll begin debugging myself but any suggestions would be appreciated.

Alex

This error is related to the use of coarse mesh finite difference (CMFD) acceleration. Unless you are sure that you need it, I would suggest not using CMFD for the time being as you are getting used to the code.

Best,
Paul