Dear Giovanni, I'm testing our system with more or less the same configuration. Can you send me the input you used in testing your cluster?
Many thanks. m. On 6 Mar 2009, at 18:15, Giovanni Cantele wrote: > Dear all, > > I just finished some timing tests relative to QE, stimulated by recent > discussions in this forum. > I would like to share these tests, and ask a couple of simple (?) > questions. > > Up to now, even if not supported by systematic tests, my feeling has > been that > for the kind of runs I'm doing on the kind of cluster(s) I'm using, > the > following rules hold: > > i) if using a relatively "small" number of CPUs, pools are rather > ineffective, I often realized that > using pools actually increased job execution time > > ii) diagonalization parallelism (-ndiag XX) is ineffective as well > > iii) version 3.2.3 is "better" than 4.0.4 > ... ******************************************************* Marino Vetuschi Zuccolini zucco at dipteris.unige.it Researcher / Geochemist Laboratory of Geochemistry DIPartimento per lo studio della TErra e delle sue RISorse - Universit? di Genova Tel. ++39 010 3538136 Fax. ++39 010 352169 Corso Europa 26, 16132 - Genova - Italy
