I am working on a genetic algorithm optimization. Does anyone know why this is happening? I defined a flux tally first, and then defined the function for the peaking factor (or non-uniformity coefficient), but it threw an error.
Seems like your tally is called “meshxy” (line 608), that’s why your code can’t find tally named “flux_xy”
But when I change my tally name, it also have this problem. I don’t know why.
OK. Do you want me to take a look at the statepoint file? Have you remembered to export the tallies?