Anisotropy tuning with the Wilson flow
  We use the Wilson flow to define the gauge anisotropy at a given physical scale. We demonstrate the use of the anisotropic flow by performing the tuning of the bare gauge anisotropy in the tree-level Symanzik action for several lattice spacings and target anisotropies. We use this method to tune the anisotropy parameters in full QCD, where we also exploit the diminishing effect of a well chosen smearing on the renormalization of the fermion anisotropy. 
S. Borsanyi, S. Durr, Z. Fodor, S. D. Katz, S. Krieg, T. Kurth, S.   Mages, A. Schafer, K. K. Szabo
hep-lat