Javier Fuhr wrote: > I would like to know if there has been > any problem reported for these options. I don't know, but you can follow the story here: http://qe-forge.org/cgi-bin/cvstrac/q-e/rlog?f=espresso/Modules/cell_base.f90 P. -- Paolo Giannozzi, Democritos and University of Udine, Italy