[QE-users] The pencil decomposition option

[Elio Physics]

Dear all,

I have been running some calculations on a supercomputer with some constraints on the number of processors I can run QE. I am faced with the error:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
     Error in routine  fft_type_set (6):
  there are processes with no planes. Use pencil decomposition (-pd .true.)
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

How do I tell the code to use the pencil decomposition? I have tried adding -pd to the 'mpirun' an adding use_pd=.true. in the PW inout but in vain.

Thanks in advance

Elie Moujaes
Adjunct professor
Federal University of Rondonia
Brazil.



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