Thanks Lorenzo, > But you are running it with only one processor. > Having only one processor, you also have less than 4 processors per pool, > hence matrix diagonalization is done serially. ok, it is single processor with 4 cores. In other softwares, each core is understood as a single processor, so at the end, I am able to run job paralle in 4 "single" processors. How do QE understand the number of processors?
> There must be an error in one of these lines, or in the way you combine > them together. I cannot say which, because I don't use lam and I don't > have access to the script you've used. I am using the script that come inside the example tar downloaded from QE site. > Double-check the script, maybe you only have to replace -n with -np. Changed, same result. Thanks in advance. Camps ___ On Fri, Aug 28, 2009 at 11:57 AM, Lorenzo Paulatto<paulatto at sissa.it> wrote: > Dear Camps, > let's have a look at all the output, not just the last line: > > > In data 28 agosto 2009 alle ore 16:42:01, I. Camps <i_camps at yahoo.com.br> > ha scritto: >> ... >> ? ? ?Parallel version (MPI) > > This mean you have actually compiled the parallel version, good! > >> ? ? ?Number of processors in use: ? ? ? 1 > > But you are running it with only one processor. > >> ? ? ?Subspace diagonalization in iterative solution of the eigenvalue >> problem: >> ? ? ?Too few procs for parallel algorithm >> ? ? ? ?we need at least 4 procs per pool >> ? ? ?a serial algorithm will be used > > Having only one processor, you also have less than 4 processors per pool, > hence matrix diagonalization is done serially. > > There must be an error in one of these lines, or in the way you combine > them together. I cannot say which, because I don't use lam and I don't > have access to the script you've used. > >> export PARA_PREFIX="mpiexec -n 4" >> export PARA_POSTFIX="-npool 1" >> PWgui="/software/PWgui-4.1" > > Double-check the script, maybe you only have to replace -n with -np. > > best regards. > > > -- > Lorenzo Paulatto > SISSA ?& ?DEMOCRITOS (Trieste) > phone: +39 040 3787 511 > skype: paulatz > www: ? http://people.sissa.it/~paulatto/ > > ? ? *** save italian brains *** > ?http://saveitalianbrains.wordpress.com/ > _______________________________________________ > Pw_forum mailing list > Pw_forum at pwscf.org > http://www.democritos.it/mailman/listinfo/pw_forum >
