I have set PrintLevel(-1) and Verbose(kFALSE) when doing a fit via RooFit. It indeed suppressed lots of output. However, there are several types of output still existing.
RooFitResult::fillCorrMatrix: number of floating parameters <=1, correlation matrix not filled
MINUIT WARNING IN PARAMETR
============== VARIABLE1 BROUGHT BACK INSIDE LIMITS.
So what should I do in order to suppress these two kinds of output? Thanks a lot.