Why am I seeing "linear regression coefficients for equation of state m=NaN b=NaN in my command prompt?

Question

When I'm firing up a model run and it's going through it's start up routine, I'm getting a line, "Linear regression coefficients for equation of state" and the next line, indented, reads "m=      NaN     b=     NaN.

Is this something I should be concerned about?

Answer 1

Hi, these regression coefficients are part of the linear equation of state used when the background PE filtering is used.

This filter really requires a double precision version of the code and no flows.  There used to be checks in the code to ensure this was the case but looking through the code it looks like they have dropped out at some point.

For now, I'd recommend turning the filter off.

Chris