 Warning: Only a single CPU will be used!

     Program TDDFPT_PP v.6.3 starts on  5Sep2018 at 16: 5:39 

     This program is part of the open-source Quantum ESPRESSO suite
     for quantum simulation of materials; please cite
         "P. Giannozzi et al., J. Phys.:Condens. Matter 21 395502 (2009);
         "P. Giannozzi et al., J. Phys.:Condens. Matter 29 465901 (2017);
          URL http://www.quantum-espresso.org", 
     in publications or presentations arising from this work. More details at
     http://www.quantum-espresso.org/quote

     Parallel version (MPI), running on     8 processors

     MPI processes distributed on     1 nodes
     R & G space division:  proc/nbgrp/npool/nimage =       8

     Reading    500 Lanczos steps for direction 1
        500 steps will be considered


     Reading    500 Lanczos steps for direction 2
        500 steps will be considered


     Reading    500 Lanczos steps for direction 3
        500 steps will be considered


     Polarization direction:1
     Lanczos coefficients:
     Average =    13.26030550
     Average oscillation amplitude =     0.25918278

     Polarization direction:2
     Lanczos coefficients:
     Average =    13.25963846
     Average oscillation amplitude =     0.25916497

     Polarization direction:3
     Lanczos coefficients:
     Average =    13.25954753
     Average oscillation amplitude =     0.23505890

     Data ready, starting to calculate observables...

     Broadening =      0.01000000 Ry

     Output file name: C6H6.plot_chi.dat   

     Output file name for the oscillator strength S  C6H6.plot_S.dat     

     chi_i_j: dipole polarizability tensor  in units of e^2*a_0^2/energy

     S: oscillator strength in units of 1/energy

     S(\hbar \omega) = 2m/( 3 \pi e^2 \hbar)  \omega sum_j chi_j_j

     S(\hbar \omega) satisfies the f-sum rule:  \int_0^\infty dE S(E) = N_el 

     Functions are reported in \hbar.\omega  Energy unit is (Ry)
 
     TDDFPT_PP    :     10.53s CPU     10.59s WALL

 
   This run was terminated on:  16: 5:50   5Sep2018            

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   JOB DONE.
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