On Jul 24, 2009, at 23:06 , Haowei Peng wrote: > can I use a parallel compiled version as serial one.. you can. It will be only a little bit slower than the serial version Paolo --- Paolo Giannozzi, Dept of Physics, University of Udine via delle Scienze 208, 33100 Udine, Italy Phone +39-0432-558216, fax +39-0432-558222