Dear all,
I'm working with a perovskite, doing preliminary calculations. That calculations are not needed to be converged, but at least to work properly for further optimization. I'm trying to do a vc-relax in the perovskite, in order to obtain the optimal geometry. However, at the end, I don't have any geometry information. I have made it with silicon, for instance, and it works.
 This is my .in:

&CONTROL
  calculation = 'vc-relax'
  outdir = '/tmp/'
  pseudo_dir = '/home/dlduran/ENERGIAS_RENOVABLES/PSEUDOPOTENCIALES/'
  etot_conv_thr = 1e-1
  forc_conv_thr = 1e-1
  nstep = 2 ! default = 50
 /

&SYSTEM
  ibrav = 2
  a = 12.16160
  nat = 114
  ntyp = 5
  ecutwfc = 10.0
  ecutrho = 40.0 ! it should be 4*ecutwfc
/

CELL_PARAMETERS angstrom
  6.080800000000000  -4.098100000000000   0.000000000000000
  6.080800000000000   4.098100000000000   0.000000000000000
 -0.461178449508037   0.000000000000002  31.372210470378228

&ELECTRONS

electron_maxstep = 2 ! default = 100
 /

&IONS
 /



&CELL
    cell_dofree='ibrav'
/

ATOMIC_SPECIES
  Br   79.90400  Br.pbe-dn-kjpaw_psl.1.0.0.UPF
   C   12.01060  C.pbe-n-kjpaw_psl.1.0.0.UPF
  Pb  207.20000  Pb.pbe-dn-kjpaw_psl.1.0.0.UPF
   H    1.00750  H.pbe-kjpaw_psl.1.0.0.UPF
   N   14.00650  N.pbe-n-kjpaw_psl.1.0.0.UPF

ATOMIC_POSITIONS crystal

Pb   0.455590000000000   0.064090000000000   0.036750000000000

 ...

H   0.536420000000000   0.733040000000000   0.949580000000000


K_POINTS (automatic)
  1 1 1 1 1 1

 Any help is kindly appreciated ...
 Best regards, David.


--------------------------
David López Durán
Department of Physics
University of Córdoba, Spain
Phone: +34 957 21 20 32
https://es.linkedin.com/in/davidlopezduran

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