Setting the scale for the CLS $2 + 1$ flavor ensembles
  We present measurements of a combination of the decay constants of the light pseudoscalar mesons and the gradient flow scale $t_0$, which allow to set the scale of the lattices generated by CLS with $2 + 1$ flavors of non-perturbatively improved Wilson fermions. Mistunings of the quark masses are corrected for by measuring the derivatives of observables with respect to the bare quark masses. 
Mattia Bruno, Tomasz Korzec and Stefan Schaefer
hep-lat