On Thu, 5 Mar 2009, Carlo Nervi wrote: CN> > Carlo Nervi wrote: CN> > CN> >> Total wall time (s) spent in this run: 5274.73 CN> >> Reference : 720.04 CN> >> CN> >> There are few discrepancies, but they seems CN> >> reasonables.. CN> >> or not? CN> > CN> > they do. What doesn't seem reasonable to me is 2 1/2 h for CN> > a series of tests that take 12 min not on the "ExaFlop CN> > Machine", but on a rather standard 3GHz IntelCore2 E6850 CN> > (the one I have in front). There is something really CN> > strange in your setup. CN> CN> This is exactly what I was wondering. During the tests 4 CN> CPUs were running at 10%, while the other four were CN> running at 1-5%. CN> It must be something wrong in my settings, but I cannot CN> figure it out.
how much memory does your machine have? what else is running on that machine? CN> Anyone could please provide a sort of "semi-standard" CN> make.sys for ifort and mkl with a working mpi? if you could run the tests, your make.sys should be ok. either you do something really strange that limits the MPI communications (and i cannot imagine what that would be) or there is something else going on that you have not paid attention to. how does the machine behave, if you compile a serial executable? cheers, axel. CN> Cheers, CN> Carlo CN> CN> -- CN> ------------------------------------------------------ CN> Carlo Nervi carlo.nervi at unito.it Tel:+39 011 6707507/8 CN> Fax: +39 011 6707855 - Dipartimento di Chimica IFM CN> via P. Giuria 7, 10125 Torino, Italy CN> http://lem.ch.unito.it/ CN> CN> CN> _______________________________________________ CN> Pw_forum mailing list CN> Pw_forum at pwscf.org CN> http://www.democritos.it/mailman/listinfo/pw_forum CN> -- ======================================================================= Axel Kohlmeyer akohlmey at cmm.chem.upenn.edu http://www.cmm.upenn.edu Center for Molecular Modeling -- University of Pennsylvania Department of Chemistry, 231 S.34th Street, Philadelphia, PA 19104-6323 tel: 1-215-898-1582, fax: 1-215-573-6233, office-tel: 1-215-898-5425 ======================================================================= If you make something idiot-proof, the universe creates a better idiot.
