[Pw_forum] Sujet : Re: Chosing output file using the -in/input option

[Paolo Giannozzi]

Sylvian Cadars wrote:

> What makes me think the problem comes more from Q-E is that the job is 
> well distributed on the processors of all nodes as soon as the Q-E 
> (right?) option "-in inputfile.in" is used (as explained in Q-E user 
> guide, see link below) instead of the standard "pw.x <inputfile.in> 
> outputfile.out" syntax.

the problem does not come from q-e. It is your cluster that is set up
in a strange way. Anyway, if it works with "-in input_file", it is
irrelevant where the problem is.

> If as Lorenzo wrote it is not possible to redirect the output

it is: just use " > ". If redirection doesn't work on your system,
that's another story. You can go to PW/startup.f90 and change

   IF ( me_image /= root_image ) &
      OPEN( UNIT = stdout, FILE = '/dev/null', STATUS = 'UNKNOWN' )

into

   IF ( me_image /= root_image ) THEN
      OPEN( UNIT = stdout, FILE = '/dev/null', STATUS = 'UNKNOWN' )
   ELSE
      OPEN( UNIT = stdout, FILE = 'some_file_name', STATUS = 'UNKNOWN' )
   END IF

For CP, edit CPV/environment.f90 in a similar way

Paolo
-- 
Paolo Giannozzi, Democritos and University of Udine, Italy