On Sep 8, 2011, at 7:41 , WF wrote: > I only need scf energy, so stdout is enough > use option disk_io='none': nothing will be writen to disk P. --- Paolo Giannozzi, Dept of Chemistry&Physics&Environment, Univ. Udine, via delle Scienze 208, 33100 Udine, Italy Phone +39-0432-558216, fax +39-0432-558222