On Tue, 2009-04-14 at 23:48 +0200, merlin meheut wrote: > Dear pwscf users, > > I am trying to run pwscf in parallel on a core2duo cluster. It seems > to compile fine (I am using mpiifort), and I am able to send a > parallel calculation on two cores (therefore two processes but only > one processor). Unfortunately, when I want to use more cores, and > therefore more than one processor, for example: > > > mpirun -np 4 pw.x -npool 1 < scf.inp > > this runs four processes but only on two cores, with the following > error at the beginning of the output: > > > You can't run mpdboot on ['compute-0-5'] version of python must be > > >= 2.4, current [''] > > I have been said that this error could be corrected by adding -r ssh, with: > > > mpirun -r ssh -np 4 pw.x -npool 1 < scf.inp > > but actually, this does not make any difference.
of course not. either have a word with your sysadmins. it looks as if on the compute-0-5 node is a much older version of python installed than what was use to compile MPICH-2 or use a different MPI implementation that does not depend on python to launch the parallel environment. cheers, axel. > > Would you have any idea on the origin of this error and how to correct it? > > Best regards, > > Merlin Meheut, ESS Department at UCLA > > > > -- > Merlin M?heut > professional adress: > 595 Charles Young Drive East > 3806 Geology Building > Los Angeles, California 90095-1597 > United States of America > tel: 310 825 7934 > cell phone: 310 893 4253 > > ---------------------------------------------------------------- > This message was sent using IMP, the Internet Messaging Program. > > _______________________________________________ > Pw_forum mailing list > Pw_forum at pwscf.org > http://www.democritos.it/mailman/listinfo/pw_forum -- ======================================================================= 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.
