I’m getting a strange error in the fourth month of my run of job u-cn950 after switching off the radiation scheme logicals in UKCA (i_ukca_rado3 etc.):
???!!!???!!!???!!!???!!!???!!! ERROR ???!!!???!!!???!!!???!!!???!!!
? Error code: 1
? Error from routine: LUDCMP
? Error message: Singular matrix in subroutine ludcmp
? Error from processor: 332
? Error number: 116
I have extra diagnostics output but it still isn’t clear to me what this error means, have you seen this before?