[Pw_forum] serial algorithm in parallel phonon calculation

[Eduardo Ariel Menendez P]

Hi,
Looking at the ph.x output, when running in parallel with four CPUs
(-npool 1) I found the following intriguing report
***********************
     Calculation of q =   0.2500  0.2500 -0.2500

     looking for the optimal diagonalization algorithm ...

     a serial algorithm will be used
***********************

Is it important or is there a parallel algorithm? I also see that top
reports
  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
11020 eduardo   16   0  107m  20m  50m R 63.9  1.0  32:49.09 ph.x
11019 eduardo   16   0  107m  20m  50m S 21.6  1.0  11:22.56 ph.x
and the same in the other dual node. Is it related to the algorithm?

Thanks
Eduardo

Eduardo A. Menendez Proupin
Department of Physics
Faculty of Science
University of Chile
Las Palmeras 3425
Ñuñoa, Santiago
Chile
Phone: 56+2+978 74 11
http://fisica.ciencias.uchile.cl/~emenendez/