[Pw_forum] Disagreement in vc-relax results between orthogonal and non-orthogonal cell

Sungkwang Mun sm655 at msstate.edu
Tue Mar 1 17:09:26 CET 2016


Hello Quantum Espresso users,

I have a question about the disagreement in vc-relax results between
orthogonal and non-orthogonal cell.  I am working on carbon structure to
get the basic properties such as energy and lattice constant using
'C.pbe-rrkjus.UPF' pseudo poential. The diamond calculations using
orthogonal (ibrav = 1) and non-orthogonal operations (ibrav = 2)  agree
each other, but FCC, BCC and HCP do not.

For example, the input script of FCC variable cell relaxation using
ibrav = 2 (non-orthogonal structure) are attached below.
&control
     pseudo_dir='../'
      calculation='vc-relax'
      tstress=.true.
/
&system
      ibrav=  2, celldm(1) = 6.04709, nat=  1, ntyp= 1,
      ecutwfc = 50,
      ecutrho = 400,
/
&electrons
/
&ions
/
&cell
/
ATOMIC_SPECIES
   C  12.0106  C.pbe-rrkjus.UPF
ATOMIC_POSITIONS crystal
   C 0 0 0
K_POINTS automatic
   7 7 7 1 1 1

The results using the script is listed below. (Energy and lattice
constant is converted to eV and Å, receptively.)
******** C (FCC-min) *********
Quantum espresso, C.pbe-rrkjus.UPF
k-point: 7, energy cutoff (Rad): 50

Total energy(eV); -148.951
Energy/atom(eV); -148.951
Pressure(Bar): 0.75
lattice const(Å): 3.50449

Stress tensor(Kbar)
   0.750 -0.000 0.000
   -0.000 0.750 -0.000
   0.000 -0.000 0.750

Next input and output using ibrav = 1 (orthogonal structure) are
attached below.
&control
     pseudo_dir='../'
      calculation='vc-relax'
      tstress=.true.
/
&system
      ibrav=  1, celldm(1) = 6.04709, nat=  4, ntyp= 1,
      ecutwfc = 50,
      ecutrho = 400,
/
&electrons
/
&ions
/
&cell
/
ATOMIC_SPECIES
   C  12.0106  C.pbe-rrkjus.UPF
ATOMIC_POSITIONS crystal
   C 0 0 0
   C 0.5 0.5 0
   C 0 0.5 0.5
   C 0.5 0 0.5
K_POINTS automatic
   7 7 7 1 1 1

******** C (FCC) *********
Quantum espresso, C.pbe-rrkjus.UPF
k-point: 7, energy cutoff (Rad): 50

Total energy(eV); -601.511
Energy/atom(eV); -150.378
Pressure(Bar): -0.74
lattice const(Å): 3.09758

Stress tensor(Kbar)
   -0.740 0.000 0.000
   0.000 -0.740 0.000
   0.000 0.000 -0.740

As seen, the energy of orthogonal structure is 2 eV lower than the
non-orthogonal structure. Also, the difference of lattice constant is
~0.4 Å.

I checked the initial and final crystal structure using Xcrysden, and
both look fine.

Could you please tell me what I am missing here?

As a reference, I attached the input scripts and output log files in
this email.

Thank you very much,

Sungkwang Mun
Postdoctoral Associate
Center for Advanced Vehicular Systems
Mississippi State University

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     Program PWSCF v.5.2.1 (svn rev. 11758) starts on 26Feb2016 at 15:30: 6 

     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);
          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     4 processors
     R & G space division:  proc/nbgrp/npool/nimage =       4
     Reading input from C_FCC_pbe-rrkjus_7_50_a_3.2.in

     Current dimensions of program PWSCF are:
     Max number of different atomic species (ntypx) = 10
     Max number of k-points (npk) =  40000
     Max angular momentum in pseudopotentials (lmaxx) =  3
               file C.pbe-rrkjus.UPF: wavefunction(s)  2S 2P renormalized

     Subspace diagonalization in iterative solution of the eigenvalue problem:
     a serial algorithm will be used

     Found symmetry operation: I + ( -0.5000 -0.5000  0.0000)
     This is a supercell, fractional translations are disabled

     Parallelization info
     --------------------
     sticks:   dense  smooth     PW     G-vecs:    dense   smooth      PW
     Min         294     148     45                 7463     2652     465
     Max         295     149     47                 7464     2664     467
     Sum        1177     593    185                29855    10635    1863



     bravais-lattice index     =            1
     lattice parameter (alat)  =       6.0471  a.u.
     unit-cell volume          =     221.1257 (a.u.)^3
     number of atoms/cell      =            4
     number of atomic types    =            1
     number of electrons       =        16.00
     number of Kohn-Sham states=            8
     kinetic-energy cutoff     =      50.0000  Ry
     charge density cutoff     =     400.0000  Ry
     convergence threshold     =      1.0E-06
     mixing beta               =       0.7000
     number of iterations used =            8  plain     mixing
     Exchange-correlation      =  SLA  PW   PBE  PBE ( 1  4  3  4 0 0)
     nstep                     =           50


     celldm(1)=   6.047090  celldm(2)=   0.000000  celldm(3)=   0.000000
     celldm(4)=   0.000000  celldm(5)=   0.000000  celldm(6)=   0.000000

     crystal axes: (cart. coord. in units of alat)
               a(1) = (   1.000000   0.000000   0.000000 )  
               a(2) = (   0.000000   1.000000   0.000000 )  
               a(3) = (   0.000000   0.000000   1.000000 )  

     reciprocal axes: (cart. coord. in units 2 pi/alat)
               b(1) = (  1.000000  0.000000  0.000000 )  
               b(2) = (  0.000000  1.000000  0.000000 )  
               b(3) = (  0.000000  0.000000  1.000000 )  


     PseudoPot. # 1 for C  read from file:
     ../C.pbe-rrkjus.UPF
     MD5 check sum: 00fb224312de0c5b6853bd333518df6f
     Pseudo is Ultrasoft, Zval =  4.0
     Generated by new atomic code, or converted to UPF format
     Using radial grid of  627 points,  4 beta functions with: 
                l(1) =   0
                l(2) =   0
                l(3) =   1
                l(4) =   1
     Q(r) pseudized with 0 coefficients 


     atomic species   valence    mass     pseudopotential
        C              4.00    12.01060     C ( 1.00)

     48 Sym. Ops., with inversion, found



   Cartesian axes

     site n.     atom                  positions (alat units)
         1           C   tau(   1) = (   0.0000000   0.0000000   0.0000000  )
         2           C   tau(   2) = (   0.5000000   0.5000000   0.0000000  )
         3           C   tau(   3) = (   0.0000000   0.5000000   0.5000000  )
         4           C   tau(   4) = (   0.5000000   0.0000000   0.5000000  )

     number of k points=    20
                       cart. coord. in units 2pi/alat
        k(    1) = (   0.0714286   0.0714286   0.0714286), wk =   0.0466472
        k(    2) = (   0.0714286   0.0714286   0.2142857), wk =   0.1399417
        k(    3) = (   0.0714286   0.0714286   0.3571429), wk =   0.1399417
        k(    4) = (   0.0714286   0.0714286  -0.5000000), wk =   0.0699708
        k(    5) = (   0.0714286   0.2142857   0.2142857), wk =   0.1399417
        k(    6) = (   0.0714286   0.2142857   0.3571429), wk =   0.2798834
        k(    7) = (   0.0714286   0.2142857  -0.5000000), wk =   0.1399417
        k(    8) = (   0.0714286   0.3571429   0.3571429), wk =   0.1399417
        k(    9) = (   0.0714286   0.3571429  -0.5000000), wk =   0.1399417
        k(   10) = (   0.0714286  -0.5000000  -0.5000000), wk =   0.0349854
        k(   11) = (   0.2142857   0.2142857   0.2142857), wk =   0.0466472
        k(   12) = (   0.2142857   0.2142857   0.3571429), wk =   0.1399417
        k(   13) = (   0.2142857   0.2142857  -0.5000000), wk =   0.0699708
        k(   14) = (   0.2142857   0.3571429   0.3571429), wk =   0.1399417
        k(   15) = (   0.2142857   0.3571429  -0.5000000), wk =   0.1399417
        k(   16) = (   0.2142857  -0.5000000  -0.5000000), wk =   0.0349854
        k(   17) = (   0.3571429   0.3571429   0.3571429), wk =   0.0466472
        k(   18) = (   0.3571429   0.3571429  -0.5000000), wk =   0.0699708
        k(   19) = (   0.3571429  -0.5000000  -0.5000000), wk =   0.0349854
        k(   20) = (  -0.5000000  -0.5000000  -0.5000000), wk =   0.0058309

     Dense  grid:    29855 G-vectors     FFT dimensions: (  40,  40,  40)

     Smooth grid:    10635 G-vectors     FFT dimensions: (  27,  27,  27)

     Largest allocated arrays     est. size (Mb)     dimensions
        Kohn-Sham Wavefunctions         0.04 Mb     (     346,    8)
        NL pseudopotentials             0.17 Mb     (     346,   32)
        Each V/rho on FFT grid          0.24 Mb     (   16000)
        Each G-vector array             0.06 Mb     (    7464)
        G-vector shells                 0.06 Mb     (    7464)
     Largest temporary arrays     est. size (Mb)     dimensions
        Auxiliary wavefunctions         0.17 Mb     (     346,   32)
        Each subspace H/S matrix        0.02 Mb     (      32,   32)
        Each <psi_i|beta_j> matrix      0.00 Mb     (      32,    8)
        Arrays for rho mixing           1.95 Mb     (   16000,    8)

     Initial potential from superposition of free atoms

     starting charge   15.99979, renormalised to   16.00000
     Starting wfc are   16 randomized atomic wfcs

     total cpu time spent up to now is        0.7 secs

     Self-consistent Calculation

     iteration #  1     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.00E-02,  avg # of iterations =  1.9

     Threshold (ethr) on eigenvalues was too large:
     Diagonalizing with lowered threshold

     Davidson diagonalization with overlap
     ethr =  2.84E-05,  avg # of iterations =  2.5

     total cpu time spent up to now is        1.4 secs

     total energy              =     -44.19905125 Ry
     Harris-Foulkes estimate   =     -44.20035039 Ry
     estimated scf accuracy    <       0.00450864 Ry

     iteration #  2     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.82E-05,  avg # of iterations =  3.7

     total cpu time spent up to now is        1.8 secs

     total energy              =     -44.19797189 Ry
     Harris-Foulkes estimate   =     -44.20046243 Ry
     estimated scf accuracy    <       0.00572936 Ry

     iteration #  3     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.82E-05,  avg # of iterations =  2.8

     total cpu time spent up to now is        2.3 secs

     total energy              =     -44.19921822 Ry
     Harris-Foulkes estimate   =     -44.19929586 Ry
     estimated scf accuracy    <       0.00040897 Ry

     iteration #  4     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.56E-06,  avg # of iterations =  2.9

     total cpu time spent up to now is        2.6 secs

     total energy              =     -44.19924801 Ry
     Harris-Foulkes estimate   =     -44.19928094 Ry
     estimated scf accuracy    <       0.00009219 Ry

     iteration #  5     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  5.76E-07,  avg # of iterations =  3.8

     total cpu time spent up to now is        3.1 secs

     total energy              =     -44.19930482 Ry
     Harris-Foulkes estimate   =     -44.19930601 Ry
     estimated scf accuracy    <       0.00000327 Ry

     iteration #  6     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     c_bands:  2 eigenvalues not converged
     ethr =  2.04E-08,  avg # of iterations =  4.8

     total cpu time spent up to now is        3.6 secs

     total energy              =     -44.20015581 Ry
     Harris-Foulkes estimate   =     -44.19996721 Ry
     estimated scf accuracy    <       0.00348526 Ry

     iteration #  7     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     c_bands:  1 eigenvalues not converged
     c_bands:  1 eigenvalues not converged
     ethr =  2.04E-08,  avg # of iterations =  5.5

     total cpu time spent up to now is        4.2 secs

     total energy              =     -44.20030359 Ry
     Harris-Foulkes estimate   =     -44.20027895 Ry
     estimated scf accuracy    <       0.00865719 Ry

     iteration #  8     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  1.6

     total cpu time spent up to now is        4.5 secs

     total energy              =     -44.19935410 Ry
     Harris-Foulkes estimate   =     -44.20030536 Ry
     estimated scf accuracy    <       0.00874768 Ry

     iteration #  9     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  6.1

     total cpu time spent up to now is        5.2 secs

     total energy              =     -44.19944997 Ry
     Harris-Foulkes estimate   =     -44.19945633 Ry
     estimated scf accuracy    <       0.00466961 Ry

     iteration # 10     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  1.0

     total cpu time spent up to now is        5.5 secs

     total energy              =     -44.19945109 Ry
     Harris-Foulkes estimate   =     -44.19945000 Ry
     estimated scf accuracy    <       0.00464524 Ry

     iteration # 11     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  1.0

     total cpu time spent up to now is        5.8 secs

     total energy              =     -44.19924030 Ry
     Harris-Foulkes estimate   =     -44.19945110 Ry
     estimated scf accuracy    <       0.00464526 Ry

     iteration # 12     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  4.2

     total cpu time spent up to now is        6.3 secs

     total energy              =     -44.19866960 Ry
     Harris-Foulkes estimate   =     -44.19924976 Ry
     estimated scf accuracy    <       0.00366185 Ry

     iteration # 13     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  6.6

     total cpu time spent up to now is        7.0 secs

     total energy              =     -44.19872663 Ry
     Harris-Foulkes estimate   =     -44.19877053 Ry
     estimated scf accuracy    <       0.00121973 Ry

     iteration # 14     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  4.5

     total cpu time spent up to now is        7.5 secs

     total energy              =     -44.19964878 Ry
     Harris-Foulkes estimate   =     -44.19966394 Ry
     estimated scf accuracy    <       0.00142335 Ry

     iteration # 15     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  1.1

     total cpu time spent up to now is        7.8 secs

     total energy              =     -44.20007189 Ry
     Harris-Foulkes estimate   =     -44.19964891 Ry
     estimated scf accuracy    <       0.00136534 Ry

     iteration # 16     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     c_bands:  1 eigenvalues not converged
     ethr =  2.04E-08,  avg # of iterations =  7.0

     total cpu time spent up to now is        8.6 secs

     total energy              =     -44.20016928 Ry
     Harris-Foulkes estimate   =     -44.20119272 Ry
     estimated scf accuracy    <       0.01171613 Ry

     iteration # 17     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  6.9

     total cpu time spent up to now is        9.3 secs

     total energy              =     -44.19813061 Ry
     Harris-Foulkes estimate   =     -44.20052746 Ry
     estimated scf accuracy    <       0.01007827 Ry

     iteration # 18     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     c_bands:  1 eigenvalues not converged
     ethr =  2.04E-08,  avg # of iterations =  8.6

     total cpu time spent up to now is       10.2 secs

     total energy              =     -44.19907036 Ry
     Harris-Foulkes estimate   =     -44.19975314 Ry
     estimated scf accuracy    <       0.00121988 Ry

     iteration # 19     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     c_bands:  2 eigenvalues not converged
     ethr =  2.04E-08,  avg # of iterations =  8.1

     total cpu time spent up to now is       11.0 secs

     total energy              =     -44.20038976 Ry
     Harris-Foulkes estimate   =     -44.20013416 Ry
     estimated scf accuracy    <       0.00586796 Ry

     iteration # 20     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  4.8

     total cpu time spent up to now is       11.6 secs

     total energy              =     -44.19823596 Ry
     Harris-Foulkes estimate   =     -44.20041313 Ry
     estimated scf accuracy    <       0.00737542 Ry

     iteration # 21     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     c_bands:  1 eigenvalues not converged
     ethr =  2.04E-08,  avg # of iterations =  8.2

     total cpu time spent up to now is       12.5 secs

     total energy              =     -44.19956287 Ry
     Harris-Foulkes estimate   =     -44.19978432 Ry
     estimated scf accuracy    <       0.00137066 Ry

     iteration # 22     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  6.1

     total cpu time spent up to now is       13.1 secs

     total energy              =     -44.19959377 Ry
     Harris-Foulkes estimate   =     -44.19963690 Ry
     estimated scf accuracy    <       0.00022268 Ry

     iteration # 23     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  5.2

     total cpu time spent up to now is       13.7 secs

     total energy              =     -44.19963284 Ry
     Harris-Foulkes estimate   =     -44.19961400 Ry
     estimated scf accuracy    <       0.00000856 Ry

     iteration # 24     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     c_bands:  1 eigenvalues not converged
     ethr =  2.04E-08,  avg # of iterations =  6.8

     total cpu time spent up to now is       14.4 secs

     total energy              =     -44.19930994 Ry
     Harris-Foulkes estimate   =     -44.19978836 Ry
     estimated scf accuracy    <       0.00153331 Ry

     iteration # 25     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     c_bands:  1 eigenvalues not converged
     ethr =  2.04E-08,  avg # of iterations =  7.8

     total cpu time spent up to now is       15.2 secs

     total energy              =     -44.19961261 Ry
     Harris-Foulkes estimate   =     -44.19968176 Ry
     estimated scf accuracy    <       0.00043180 Ry

     iteration # 26     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  4.9

     total cpu time spent up to now is       15.8 secs

     total energy              =     -44.19961457 Ry
     Harris-Foulkes estimate   =     -44.19962787 Ry
     estimated scf accuracy    <       0.00011547 Ry

     iteration # 27     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  3.3

     total cpu time spent up to now is       16.3 secs

     total energy              =     -44.19962978 Ry
     Harris-Foulkes estimate   =     -44.19961638 Ry
     estimated scf accuracy    <       0.00005399 Ry

     iteration # 28     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  3.6

     total cpu time spent up to now is       16.8 secs

     total energy              =     -44.19962056 Ry
     Harris-Foulkes estimate   =     -44.19963408 Ry
     estimated scf accuracy    <       0.00018223 Ry

     iteration # 29     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  3.0

     total cpu time spent up to now is       17.2 secs

     total energy              =     -44.19959014 Ry
     Harris-Foulkes estimate   =     -44.19962201 Ry
     estimated scf accuracy    <       0.00009644 Ry

     iteration # 30     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  5.0

     total cpu time spent up to now is       17.8 secs

     total energy              =     -44.19961083 Ry
     Harris-Foulkes estimate   =     -44.19961606 Ry
     estimated scf accuracy    <       0.00004972 Ry

     iteration # 31     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  3.0

     total cpu time spent up to now is       18.2 secs

     total energy              =     -44.19961599 Ry
     Harris-Foulkes estimate   =     -44.19961189 Ry
     estimated scf accuracy    <       0.00001564 Ry

     iteration # 32     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  3.6

     total cpu time spent up to now is       18.6 secs

     total energy              =     -44.19960923 Ry
     Harris-Foulkes estimate   =     -44.19961840 Ry
     estimated scf accuracy    <       0.00007767 Ry

     iteration # 33     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  3.2

     total cpu time spent up to now is       19.1 secs

     total energy              =     -44.19961055 Ry
     Harris-Foulkes estimate   =     -44.19961188 Ry
     estimated scf accuracy    <       0.00001167 Ry

     iteration # 34     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  2.1

     total cpu time spent up to now is       19.4 secs

     total energy              =     -44.19961083 Ry
     Harris-Foulkes estimate   =     -44.19961101 Ry
     estimated scf accuracy    <       0.00000398 Ry

     iteration # 35     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  1.0

     total cpu time spent up to now is       19.7 secs

     total energy              =     -44.19960990 Ry
     Harris-Foulkes estimate   =     -44.19961087 Ry
     estimated scf accuracy    <       0.00000335 Ry

     iteration # 36     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  3.0

     total cpu time spent up to now is       20.2 secs

     total energy              =     -44.19961106 Ry
     Harris-Foulkes estimate   =     -44.19961163 Ry
     estimated scf accuracy    <       0.00000494 Ry

     iteration # 37     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.04E-08,  avg # of iterations =  1.0

     total cpu time spent up to now is       20.5 secs

     total energy              =     -44.19961117 Ry
     Harris-Foulkes estimate   =     -44.19961112 Ry
     estimated scf accuracy    <       0.00000290 Ry

     iteration # 38     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.81E-08,  avg # of iterations =  1.0

     total cpu time spent up to now is       20.7 secs

     total energy              =     -44.19961118 Ry
     Harris-Foulkes estimate   =     -44.19961119 Ry
     estimated scf accuracy    <       0.00000293 Ry

     iteration # 39     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.81E-08,  avg # of iterations =  1.0

     total cpu time spent up to now is       21.0 secs

     total energy              =     -44.19961071 Ry
     Harris-Foulkes estimate   =     -44.19961119 Ry
     estimated scf accuracy    <       0.00000280 Ry

     iteration # 40     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.75E-08,  avg # of iterations =  1.9

     total cpu time spent up to now is       21.3 secs

     End of self-consistent calculation

          k = 0.0714 0.0714 0.0714 (  1334 PWs)   bands (ev):

    -8.4513   1.5227   1.5227   1.5276   4.4548   4.4548   4.4599  10.1648

          k = 0.0714 0.0714 0.2143 (  1312 PWs)   bands (ev):

    -7.9519  -1.1849   1.9316   1.9356   4.7302   4.7330   7.3643   8.6264

          k = 0.0714 0.0714 0.3571 (  1315 PWs)   bands (ev):

    -6.9582  -3.5441   2.6449   2.6509   5.0928   5.0940   7.1281   7.1333

          k = 0.0714 0.0714-0.5000 (  1314 PWs)   bands (ev):

    -5.4856  -5.4778   3.1477   3.1568   5.1170   5.1261   6.5493   6.5601

          k = 0.0714 0.2143 0.2143 (  1320 PWs)   bands (ev):

    -7.4539  -0.7292  -0.7261   2.2703   4.6954   6.9986   7.1703   7.1710

          k = 0.0714 0.2143 0.3571 (  1322 PWs)   bands (ev):

    -6.4634  -3.0659   0.1593   2.4277   4.2839   6.2682   6.7729   8.4674

          k = 0.0714 0.2143-0.5000 (  1322 PWs)   bands (ev):

    -4.9966  -4.9888   1.3731   1.3819   4.9929   5.0011   7.5277   7.5371

          k = 0.0714 0.3571 0.3571 (  1321 PWs)   bands (ev):

    -5.4801  -2.1238  -2.1211   0.9443   4.6203   7.2346   7.2357   7.3914

          k = 0.0714 0.3571-0.5000 (  1316 PWs)   bands (ev):

    -4.0271  -4.0191  -0.7541  -0.7457   5.7589   5.7668   8.4302   8.4385

          k = 0.0714-0.5000-0.5000 (  1332 PWs)   bands (ev):

    -2.6002  -2.5947  -2.5947  -2.5840   6.9547   6.9629   6.9629   6.9699

          k = 0.2143 0.2143 0.2143 (  1310 PWs)   bands (ev):

    -6.9575  -0.2854  -0.2854  -0.2801   5.8595   5.8622   5.8622   9.0964

          k = 0.2143 0.2143 0.3571 (  1320 PWs)   bands (ev):

    -5.9703  -2.5922   0.5405   0.5457   4.1033   4.1066   6.8415   9.4217

          k = 0.2143 0.2143-0.5000 (  1316 PWs)   bands (ev):

    -4.5102  -4.5023   1.2442   1.2535   3.0446   3.0518   8.0997   8.1070

          k = 0.2143 0.3571 0.3571 (  1325 PWs)   bands (ev):

    -4.9912  -1.6643  -1.6611   0.8394   2.5765   4.9034   4.9044   7.7882

          k = 0.2143 0.3571-0.5000 (  1316 PWs)   bands (ev):

    -3.5469  -3.5389  -0.3501  -0.3416   3.2799   3.2875   6.1646   6.1723

          k = 0.2143-0.5000-0.5000 (  1328 PWs)   bands (ev):

    -2.1356  -2.1305  -2.1305  -2.1192   4.5017   4.5102   4.5102   4.5172

          k = 0.3571 0.3571 0.3571 (  1331 PWs)   bands (ev):

    -4.0223  -0.7928  -0.7928  -0.7857   2.8200   2.8237   2.8237   5.7756

          k = 0.3571 0.3571-0.5000 (  1330 PWs)   bands (ev):

    -2.6012  -2.5931   0.0031   0.0123   1.6066   1.6136   4.0713   4.0790

          k = 0.3571-0.5000-0.5000 (  1328 PWs)   bands (ev):

    -1.2492  -1.2453  -1.2453  -1.2324   2.3617   2.3715   2.3715   2.3768

          k =-0.5000-0.5000-0.5000 (  1328 PWs)   bands (ev):

    -0.4179  -0.4179  -0.4179  -0.3997   1.1040   1.1177   1.1177   1.1177

     highest occupied level (ev):    10.1648

!    total energy              =     -44.19961108 Ry
     Harris-Foulkes estimate   =     -44.19961111 Ry
     estimated scf accuracy    <       0.00000005 Ry

     The total energy is the sum of the following terms:

     one-electron contribution =      14.94869370 Ry
     hartree contribution      =       1.87729945 Ry
     xc contribution           =     -12.50124412 Ry
     ewald contribution        =     -48.52436010 Ry

     convergence has been achieved in  40 iterations

     Forces acting on atoms (Ry/au):

     atom    1 type  1   force =     0.00000000    0.00000000    0.00000000
     atom    2 type  1   force =     0.00000000    0.00000000    0.00000000
     atom    3 type  1   force =     0.00000000    0.00000000    0.00000000
     atom    4 type  1   force =     0.00000000    0.00000000    0.00000000

     Total force =     0.000000     Total SCF correction =     0.000000


     entering subroutine stress ...

          total   stress  (Ry/bohr**3)                   (kbar)     P= -141.10
  -0.00095915   0.00000000   0.00000000       -141.10      0.00      0.00
   0.00000000  -0.00095915   0.00000000          0.00   -141.10      0.00
   0.00000000   0.00000000  -0.00095915          0.00      0.00   -141.10


     BFGS Geometry Optimization

     number of scf cycles    =   1
     number of bfgs steps    =   0

     enthalpy new            =     -44.1996110752 Ry

     new trust radius        =       0.0713145662 bohr
     new conv_thr            =       0.0000010000 Ry

     new unit-cell volume =    205.59709 a.u.^3 (    30.46635 Ang^3 )

CELL_PARAMETERS (alat=  6.04709000)
   0.976021136   0.000000000   0.000000000
   0.000000000   0.976021136   0.000000000
   0.000000000   0.000000000   0.976021136

ATOMIC_POSITIONS (crystal)
C        0.000000000   0.000000000   0.000000000
C        0.500000000   0.500000000   0.000000000
C        0.000000000   0.500000000   0.500000000
C        0.500000000   0.000000000   0.500000000



     Writing output data file pwscf.save
     NEW-OLD atomic charge density approx. for the potential
     extrapolated charge   14.79154, renormalised to   16.00000

     total cpu time spent up to now is       23.1 secs

     Self-consistent Calculation

     iteration #  1     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.00E-06,  avg # of iterations =  5.0

     total cpu time spent up to now is       23.8 secs

     total energy              =     -44.20449483 Ry
     Harris-Foulkes estimate   =     -43.22569803 Ry
     estimated scf accuracy    <       0.00480948 Ry

     iteration #  2     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  3.01E-05,  avg # of iterations =  2.1

     total cpu time spent up to now is       24.2 secs

     total energy              =     -44.20956702 Ry
     Harris-Foulkes estimate   =     -44.20989489 Ry
     estimated scf accuracy    <       0.00090692 Ry

     iteration #  3     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  5.67E-06,  avg # of iterations =  1.5

     total cpu time spent up to now is       24.4 secs

     total energy              =     -44.20955701 Ry
     Harris-Foulkes estimate   =     -44.20962662 Ry
     estimated scf accuracy    <       0.00014390 Ry

     iteration #  4     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  8.99E-07,  avg # of iterations =  2.7

     total cpu time spent up to now is       24.8 secs

     total energy              =     -44.20958390 Ry
     Harris-Foulkes estimate   =     -44.20958365 Ry
     estimated scf accuracy    <       0.00000969 Ry

     iteration #  5     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  6.06E-08,  avg # of iterations =  2.7

     total cpu time spent up to now is       25.2 secs

     total energy              =     -44.20958519 Ry
     Harris-Foulkes estimate   =     -44.20958577 Ry
     estimated scf accuracy    <       0.00001122 Ry

     iteration #  6     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  6.06E-08,  avg # of iterations =  1.0

     total cpu time spent up to now is       25.5 secs

     total energy              =     -44.20958131 Ry
     Harris-Foulkes estimate   =     -44.20958535 Ry
     estimated scf accuracy    <       0.00001018 Ry

     iteration #  7     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  6.06E-08,  avg # of iterations =  3.0

     total cpu time spent up to now is       25.9 secs

     total energy              =     -44.20957880 Ry
     Harris-Foulkes estimate   =     -44.20958622 Ry
     estimated scf accuracy    <       0.00001468 Ry

     iteration #  8     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  6.06E-08,  avg # of iterations =  3.4

     total cpu time spent up to now is       26.4 secs

     total energy              =     -44.20957839 Ry
     Harris-Foulkes estimate   =     -44.20958897 Ry
     estimated scf accuracy    <       0.00003452 Ry

     iteration #  9     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  6.06E-08,  avg # of iterations =  3.2

     total cpu time spent up to now is       26.9 secs

     End of self-consistent calculation

          k = 0.0732 0.0732 0.0732 (  1334 PWs)   bands (ev):

    -8.2271   2.2887   2.2887   2.2953   5.5157   5.5157   5.5272  11.2937

          k = 0.0732 0.0732 0.2196 (  1312 PWs)   bands (ev):

    -7.7012  -0.5588   2.7561   2.7613   5.8047   5.8115   8.6123   9.6018

          k = 0.0732 0.0732 0.3659 (  1315 PWs)   bands (ev):

    -6.6544  -3.0523   3.6162   3.6242   6.1145   6.1152   7.9960   8.0048

          k = 0.0732 0.0732-0.5123 (  1314 PWs)   bands (ev):

    -5.1032  -5.0921   4.3355   4.3508   5.8280   5.8409   7.5333   7.5497

          k = 0.0732 0.2196 0.2196 (  1320 PWs)   bands (ev):

    -7.1766  -0.0677  -0.0630   3.1831   5.7046   7.8452   8.4088   8.4095

          k = 0.0732 0.2196 0.3659 (  1322 PWs)   bands (ev):

    -6.1324  -2.5434   0.9000   3.5310   4.9413   7.3174   7.7494   9.5648

          k = 0.0732 0.2196-0.5123 (  1322 PWs)   bands (ev):

    -4.5859  -4.5748   2.2562   2.2696   5.8190   5.8314   8.5994   8.6134

          k = 0.0732 0.3659 0.3659 (  1321 PWs)   bands (ev):

    -5.0941  -1.5387  -1.5344   1.8012   5.4055   8.3137   8.3147   8.4435

          k = 0.0732 0.3659-0.5123 (  1316 PWs)   bands (ev):

    -3.5588  -3.5474  -0.0669  -0.0546   6.6863   6.6986   9.5427   9.5552

          k = 0.0732-0.5123-0.5123 (  1332 PWs)   bands (ev):

    -2.0432  -2.0358  -2.0358  -2.0198   7.9850   7.9951   7.9951   8.0088

          k = 0.2196 0.2196 0.2196 (  1310 PWs)   bands (ev):

    -6.6532   0.4174   0.4174   0.4253   6.8790   6.8794   6.8794  10.2104

          k = 0.2196 0.2196 0.3659 (  1320 PWs)   bands (ev):

    -5.6118  -2.0375   1.3454   1.3528   4.9021   4.9042   7.8889  10.6199

          k = 0.2196 0.2196-0.5123 (  1316 PWs)   bands (ev):

    -4.0705  -4.0593   2.2449   2.2598   3.6085   3.6181   9.2157   9.2272

          k = 0.2196 0.3659 0.3659 (  1325 PWs)   bands (ev):

    -4.5767  -1.0416  -1.0367   1.8169   3.1106   5.7928   5.7938   8.8769

          k = 0.2196 0.3659-0.5123 (  1316 PWs)   bands (ev):

    -3.0477  -3.0363   0.3979   0.4106   4.0107   4.0219   7.1427   7.1545

          k = 0.2196-0.5123-0.5123 (  1328 PWs)   bands (ev):

    -1.5421  -1.5349  -1.5349  -1.5184   5.3569   5.3673   5.3673   5.3802

          k = 0.3659 0.3659 0.3659 (  1331 PWs)   bands (ev):

    -3.5493  -0.0767  -0.0767  -0.0668   3.5337   3.5350   3.5350   6.7289

          k = 0.3659 0.3659-0.5123 (  1330 PWs)   bands (ev):

    -2.0364  -2.0246   0.9300   0.9446   2.0775   2.0864   4.9039   4.9154

          k = 0.3659-0.5123-0.5123 (  1328 PWs)   bands (ev):

    -0.5649  -0.5588  -0.5588  -0.5402   3.0462   3.0576   3.0576   3.0682

          k =-0.5123-0.5123-0.5123 (  1328 PWs)   bands (ev):

     0.4865   0.4865   0.4865   0.5156   1.5418   1.5594   1.5594   1.5594

     highest occupied level (ev):    11.2937

!    total energy              =     -44.20958309 Ry
     Harris-Foulkes estimate   =     -44.20958319 Ry
     estimated scf accuracy    <       0.00000013 Ry

     The total energy is the sum of the following terms:

     one-electron contribution =      16.48682736 Ry
     hartree contribution      =       1.68905615 Ry
     xc contribution           =     -12.66896117 Ry
     ewald contribution        =     -49.71650543 Ry

     convergence has been achieved in   9 iterations

     Forces acting on atoms (Ry/au):

     atom    1 type  1   force =     0.00000000    0.00000000    0.00000000
     atom    2 type  1   force =     0.00000000    0.00000000    0.00000000
     atom    3 type  1   force =     0.00000000    0.00000000    0.00000000
     atom    4 type  1   force =     0.00000000    0.00000000    0.00000000

     Total force =     0.000000     Total SCF correction =     0.000000


     entering subroutine stress ...

          total   stress  (Ry/bohr**3)                   (kbar)     P=  -41.46
  -0.00028183   0.00000000   0.00000000        -41.46      0.00      0.00
   0.00000000  -0.00028183   0.00000000          0.00    -41.46      0.00
   0.00000000   0.00000000  -0.00028183          0.00      0.00    -41.46


     number of scf cycles    =   2
     number of bfgs steps    =   1

     enthalpy old            =     -44.1996110752 Ry
     enthalpy new            =     -44.2095830865 Ry

     CASE: enthalpy_new < enthalpy_old

     new trust radius        =       0.0273865589 bohr
     new conv_thr            =       0.0000000100 Ry

     new unit-cell volume =    199.76287 a.u.^3 (    29.60180 Ang^3 )

CELL_PARAMETERS (alat=  6.04709000)
   0.966700228   0.000000000   0.000000000
   0.000000000   0.966700228   0.000000000
   0.000000000   0.000000000   0.966700228

ATOMIC_POSITIONS (crystal)
C        0.000000000   0.000000000   0.000000000
C        0.500000000   0.500000000   0.000000000
C        0.000000000   0.500000000   0.500000000
C        0.500000000   0.000000000   0.500000000



     Writing output data file pwscf.save
     NEW-OLD atomic charge density approx. for the potential
     extrapolated charge   15.53271, renormalised to   16.00000

     total cpu time spent up to now is       28.6 secs

     Self-consistent Calculation

     iteration #  1     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.00E-06,  avg # of iterations =  4.0

     total cpu time spent up to now is       29.2 secs

     total energy              =     -44.20960385 Ry
     Harris-Foulkes estimate   =     -43.82120067 Ry
     estimated scf accuracy    <       0.00055163 Ry

     iteration #  2     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  3.45E-06,  avg # of iterations =  2.5

     total cpu time spent up to now is       29.6 secs

     total energy              =     -44.21029396 Ry
     Harris-Foulkes estimate   =     -44.21034144 Ry
     estimated scf accuracy    <       0.00013538 Ry

     iteration #  3     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  8.46E-07,  avg # of iterations =  1.4

     total cpu time spent up to now is       29.9 secs

     total energy              =     -44.21029192 Ry
     Harris-Foulkes estimate   =     -44.21030103 Ry
     estimated scf accuracy    <       0.00002390 Ry

     iteration #  4     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.49E-07,  avg # of iterations =  1.9

     total cpu time spent up to now is       30.2 secs

     total energy              =     -44.21029378 Ry
     Harris-Foulkes estimate   =     -44.21029408 Ry
     estimated scf accuracy    <       0.00000298 Ry

     iteration #  5     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.87E-08,  avg # of iterations =  2.2

     total cpu time spent up to now is       30.6 secs

     total energy              =     -44.21029297 Ry
     Harris-Foulkes estimate   =     -44.21029410 Ry
     estimated scf accuracy    <       0.00000238 Ry

     iteration #  6     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.49E-08,  avg # of iterations =  1.9

     total cpu time spent up to now is       30.9 secs

     total energy              =     -44.21029321 Ry
     Harris-Foulkes estimate   =     -44.21029320 Ry
     estimated scf accuracy    <       0.00000004 Ry

     iteration #  7     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.34E-10,  avg # of iterations =  4.1

     total cpu time spent up to now is       31.4 secs

     total energy              =     -44.21029328 Ry
     Harris-Foulkes estimate   =     -44.21029328 Ry
     estimated scf accuracy    <       0.00000007 Ry

     iteration #  8     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.34E-10,  avg # of iterations =  1.0

     total cpu time spent up to now is       31.6 secs

     total energy              =     -44.21029326 Ry
     Harris-Foulkes estimate   =     -44.21029328 Ry
     estimated scf accuracy    <       0.00000005 Ry

     iteration #  9     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.34E-10,  avg # of iterations =  1.0

     total cpu time spent up to now is       31.9 secs

     total energy              =     -44.21029326 Ry
     Harris-Foulkes estimate   =     -44.21029326 Ry
     estimated scf accuracy    <       0.00000002 Ry

     iteration # 10     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.02E-10,  avg # of iterations =  3.3

     total cpu time spent up to now is       32.3 secs

     total energy              =     -44.21029326 Ry
     Harris-Foulkes estimate   =     -44.21029326 Ry
     estimated scf accuracy    <       0.00000001 Ry

     iteration # 11     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  6.86E-11,  avg # of iterations =  1.0

     total cpu time spent up to now is       32.5 secs

     total energy              =     -44.21029326 Ry
     Harris-Foulkes estimate   =     -44.21029326 Ry
     estimated scf accuracy    <       0.00000001 Ry

     iteration # 12     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  6.86E-11,  avg # of iterations =  1.0

     total cpu time spent up to now is       32.8 secs

     total energy              =     -44.21029326 Ry
     Harris-Foulkes estimate   =     -44.21029326 Ry
     estimated scf accuracy    <       0.00000001 Ry

     iteration # 13     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  6.86E-11,  avg # of iterations =  1.0

     total cpu time spent up to now is       33.1 secs

     total energy              =     -44.21029326 Ry
     Harris-Foulkes estimate   =     -44.21029326 Ry
     estimated scf accuracy    <       0.00000001 Ry

     iteration # 14     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  6.86E-11,  avg # of iterations =  1.0

     total cpu time spent up to now is       33.3 secs

     End of self-consistent calculation

          k = 0.0739 0.0739 0.0739 (  1334 PWs)   bands (ev):

    -8.1345   2.5868   2.5868   2.5927   5.9683   5.9683   5.9805  11.7572

          k = 0.0739 0.0739 0.2217 (  1312 PWs)   bands (ev):

    -7.5981  -0.3074   3.0754   3.0800   6.2663   6.2738   9.1315  10.0033

          k = 0.0739 0.0739 0.3694 (  1315 PWs)   bands (ev):

    -6.5300  -2.8532   3.9892   3.9964   6.5598   6.5611   8.3551   8.3642

          k = 0.0739 0.0739-0.5172 (  1314 PWs)   bands (ev):

    -4.9467  -4.9357   4.8100   4.8255   6.1208   6.1337   7.9571   7.9735

          k = 0.0739 0.2217 0.2217 (  1320 PWs)   bands (ev):

    -7.0627   0.1978   0.2022   3.5330   6.1439   8.1942   8.9248   8.9258

          k = 0.0739 0.2217 0.3694 (  1322 PWs)   bands (ev):

    -5.9971  -2.3322   1.1953   3.9734   5.2120   7.7481   8.1620  10.0281

          k = 0.0739 0.2217-0.5172 (  1322 PWs)   bands (ev):

    -4.4183  -4.4071   2.6064   2.6198   6.1629   6.1755   9.0522   9.0662

          k = 0.0739 0.3694 0.3694 (  1321 PWs)   bands (ev):

    -4.9369  -1.3026  -1.2985   2.1410   5.7320   8.7552   8.7568   8.8857

          k = 0.0739 0.3694-0.5172 (  1316 PWs)   bands (ev):

    -3.3683  -3.3570   0.2089   0.2212   7.0682   7.0807  10.0095  10.0220

          k = 0.0739-0.5172-0.5172 (  1332 PWs)   bands (ev):

    -1.8176  -1.8099  -1.8099  -1.7943   8.4085   8.4184   8.4184   8.4330

          k = 0.2217 0.2217 0.2217 (  1310 PWs)   bands (ev):

    -6.5286   0.6985   0.6985   0.7059   7.2999   7.2999   7.3002  10.6762

          k = 0.2217 0.2217 0.3694 (  1320 PWs)   bands (ev):

    -5.4655  -1.8138   1.6648   1.6715   5.2377   5.2391   8.3204  11.1180

          k = 0.2217 0.2217-0.5172 (  1316 PWs)   bands (ev):

    -3.8915  -3.8802   2.6526   2.6675   3.8408   3.8504   9.6760   9.6878

          k = 0.2217 0.3694 0.3694 (  1325 PWs)   bands (ev):

    -4.4084  -0.7913  -0.7868   2.2151   3.3303   6.1616   6.1631   9.3258

          k = 0.2217 0.3694-0.5172 (  1316 PWs)   bands (ev):

    -2.8453  -2.8339   0.6957   0.7082   4.3196   4.3310   7.5476   7.5596

          k = 0.2217-0.5172-0.5172 (  1328 PWs)   bands (ev):

    -1.3028  -1.2953  -1.2953  -1.2792   5.7137   5.7237   5.7237   5.7373

          k = 0.3694 0.3694 0.3694 (  1331 PWs)   bands (ev):

    -3.3580   0.2080   0.2080   0.2169   3.8359   3.8361   3.8361   7.1234

          k = 0.3694 0.3694-0.5172 (  1330 PWs)   bands (ev):

    -1.8088  -1.7972   1.3104   1.3252   2.2718   2.2807   5.2515   5.2632

          k = 0.3694-0.5172-0.5172 (  1328 PWs)   bands (ev):

    -0.2926  -0.2860  -0.2860  -0.2682   3.3381   3.3491   3.3491   3.3605

          k =-0.5172-0.5172-0.5172 (  1328 PWs)   bands (ev):

     0.8585   0.8585   0.8585   0.8877   1.7233   1.7409   1.7409   1.7409

     highest occupied level (ev):    11.7572

!    total energy              =     -44.21029325 Ry
     Harris-Foulkes estimate   =     -44.21029326 Ry
     estimated scf accuracy    <          5.6E-09 Ry

     The total energy is the sum of the following terms:

     one-electron contribution =      17.10563922 Ry
     hartree contribution      =       1.61835530 Ry
     xc contribution           =     -12.73841661 Ry
     ewald contribution        =     -50.19587117 Ry

     convergence has been achieved in  14 iterations

     Forces acting on atoms (Ry/au):

     atom    1 type  1   force =     0.00000000    0.00000000    0.00000000
     atom    2 type  1   force =     0.00000000    0.00000000    0.00000000
     atom    3 type  1   force =     0.00000000    0.00000000    0.00000000
     atom    4 type  1   force =     0.00000000    0.00000000    0.00000000

     Total force =     0.000000     Total SCF correction =     0.000000


     entering subroutine stress ...

          total   stress  (Ry/bohr**3)                   (kbar)     P=    6.82
   0.00004634   0.00000000   0.00000000          6.82      0.00      0.00
   0.00000000   0.00004634   0.00000000          0.00      6.82      0.00
   0.00000000   0.00000000   0.00004634          0.00      0.00      6.82


     number of scf cycles    =   3
     number of bfgs steps    =   2

     enthalpy old            =     -44.2095830865 Ry
     enthalpy new            =     -44.2102932550 Ry

     CASE: enthalpy_new < enthalpy_old

     new trust radius        =       0.0037853370 bohr
     new conv_thr            =       0.0000000100 Ry

     new unit-cell volume =    200.56646 a.u.^3 (    29.72088 Ang^3 )

CELL_PARAMETERS (alat=  6.04709000)
   0.967994749   0.000000000   0.000000000
   0.000000000   0.967994749   0.000000000
   0.000000000   0.000000000   0.967994749

ATOMIC_POSITIONS (crystal)
C        0.000000000   0.000000000   0.000000000
C        0.500000000   0.500000000   0.000000000
C        0.000000000   0.500000000   0.500000000
C        0.500000000   0.000000000   0.500000000



     Writing output data file pwscf.save
     NEW-OLD atomic charge density approx. for the potential
     extrapolated charge   16.06410, renormalised to   16.00000

     total cpu time spent up to now is       35.2 secs

     Self-consistent Calculation

     iteration #  1     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.00E-06,  avg # of iterations =  2.0

     Threshold (ethr) on eigenvalues was too large:
     Diagonalizing with lowered threshold

     Davidson diagonalization with overlap
     ethr =  5.61E-08,  avg # of iterations =  1.9

     total cpu time spent up to now is       35.8 secs

     total energy              =     -44.21029781 Ry
     Harris-Foulkes estimate   =     -44.26374230 Ry
     estimated scf accuracy    <       0.00000924 Ry

     iteration #  2     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  5.77E-08,  avg # of iterations =  2.7

     total cpu time spent up to now is       36.2 secs

     total energy              =     -44.21031110 Ry
     Harris-Foulkes estimate   =     -44.21031207 Ry
     estimated scf accuracy    <       0.00000285 Ry

     iteration #  3     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.78E-08,  avg # of iterations =  1.1

     total cpu time spent up to now is       36.5 secs

     total energy              =     -44.21031106 Ry
     Harris-Foulkes estimate   =     -44.21031123 Ry
     estimated scf accuracy    <       0.00000056 Ry

     iteration #  4     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  3.48E-09,  avg # of iterations =  1.8

     total cpu time spent up to now is       36.8 secs

     total energy              =     -44.21031111 Ry
     Harris-Foulkes estimate   =     -44.21031110 Ry
     estimated scf accuracy    <       0.00000015 Ry

     iteration #  5     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  9.30E-10,  avg # of iterations =  1.2

     total cpu time spent up to now is       37.1 secs

     total energy              =     -44.21031107 Ry
     Harris-Foulkes estimate   =     -44.21031111 Ry
     estimated scf accuracy    <       0.00000017 Ry

     iteration #  6     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  9.30E-10,  avg # of iterations =  2.6

     total cpu time spent up to now is       37.5 secs

     total energy              =     -44.21031101 Ry
     Harris-Foulkes estimate   =     -44.21031109 Ry
     estimated scf accuracy    <       0.00000021 Ry

     iteration #  7     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  9.30E-10,  avg # of iterations =  3.0

     total cpu time spent up to now is       37.9 secs

     total energy              =     -44.21031104 Ry
     Harris-Foulkes estimate   =     -44.21031105 Ry
     estimated scf accuracy    <       0.00000003 Ry

     iteration #  8     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.67E-10,  avg # of iterations =  2.9

     total cpu time spent up to now is       38.3 secs

     End of self-consistent calculation

          k = 0.0738 0.0738 0.0738 (  1334 PWs)   bands (ev):

    -8.1475   2.5454   2.5454   2.5513   5.9043   5.9043   5.9162  11.6918

          k = 0.0738 0.0738 0.2214 (  1312 PWs)   bands (ev):

    -7.6126  -0.3426   3.0311   3.0357   6.2009   6.2081   9.0583   9.9469

          k = 0.0738 0.0738 0.3690 (  1315 PWs)   bands (ev):

    -6.5474  -2.8811   3.9376   3.9448   6.4964   6.4976   8.3046   8.3135

          k = 0.0738 0.0738-0.5165 (  1314 PWs)   bands (ev):

    -4.9686  -4.9577   4.7439   4.7592   6.0797   6.0925   7.8968   7.9131

          k = 0.0738 0.2214 0.2214 (  1320 PWs)   bands (ev):

    -7.0787   0.1607   0.1651   3.4846   6.0813   8.1451   8.8520   8.8529

          k = 0.0738 0.2214 0.3690 (  1322 PWs)   bands (ev):

    -6.0161  -2.3618   1.1541   3.9116   5.1739   7.6876   8.1035   9.9625

          k = 0.0738 0.2214-0.5165 (  1322 PWs)   bands (ev):

    -4.4417  -4.4307   2.5577   2.5709   6.1145   6.1269   8.9882   9.0020

          k = 0.0738 0.3690 0.3690 (  1321 PWs)   bands (ev):

    -4.9590  -1.3356  -1.3316   2.0937   5.6859   8.6932   8.6947   8.8231

          k = 0.0738 0.3690-0.5165 (  1316 PWs)   bands (ev):

    -3.3949  -3.3837   0.1704   0.1826   7.0145   7.0269   9.9436   9.9559

          k = 0.0738-0.5165-0.5165 (  1332 PWs)   bands (ev):

    -1.8491  -1.8415  -1.8415  -1.8260   8.3491   8.3589   8.3589   8.3732

          k = 0.2214 0.2214 0.2214 (  1310 PWs)   bands (ev):

    -6.5461   0.6592   0.6592   0.6666   7.2407   7.2407   7.2409  10.6105

          k = 0.2214 0.2214 0.3690 (  1320 PWs)   bands (ev):

    -5.4861  -1.8452   1.6203   1.6271   5.1902   5.1917   8.2597  11.0476

          k = 0.2214 0.2214-0.5165 (  1316 PWs)   bands (ev):

    -3.9165  -3.9054   2.5954   2.6103   3.8082   3.8177   9.6113   9.6229

          k = 0.2214 0.3690 0.3690 (  1325 PWs)   bands (ev):

    -4.4320  -0.8263  -0.8218   2.1592   3.2994   6.1096   6.1110   9.2626

          k = 0.2214 0.3690-0.5165 (  1316 PWs)   bands (ev):

    -2.8736  -2.8623   0.6542   0.6667   4.2760   4.2872   7.4907   7.5025

          k = 0.2214-0.5165-0.5165 (  1328 PWs)   bands (ev):

    -1.3362  -1.3288  -1.3288  -1.3128   5.6635   5.6735   5.6735   5.6868

          k = 0.3690 0.3690 0.3690 (  1331 PWs)   bands (ev):

    -3.3848   0.1683   0.1683   0.1773   3.7930   3.7934   3.7934   7.0678

          k = 0.3690 0.3690-0.5165 (  1330 PWs)   bands (ev):

    -1.8406  -1.8290   1.2571   1.2716   2.2445   2.2533   5.2025   5.2141

          k = 0.3690-0.5165-0.5165 (  1328 PWs)   bands (ev):

    -0.3305  -0.3240  -0.3240  -0.3062   3.2968   3.3078   3.3078   3.3190

          k =-0.5165-0.5165-0.5165 (  1328 PWs)   bands (ev):

     0.8063   0.8063   0.8063   0.8351   1.6979   1.7153   1.7153   1.7153

     highest occupied level (ev):    11.6918

!    total energy              =     -44.21031105 Ry
     Harris-Foulkes estimate   =     -44.21031105 Ry
     estimated scf accuracy    <          2.5E-09 Ry

     The total energy is the sum of the following terms:

     one-electron contribution =      17.01896856 Ry
     hartree contribution      =       1.62808258 Ry
     xc contribution           =     -12.72861906 Ry
     ewald contribution        =     -50.12874312 Ry

     convergence has been achieved in   8 iterations

     Forces acting on atoms (Ry/au):

     atom    1 type  1   force =     0.00000000    0.00000000    0.00000000
     atom    2 type  1   force =     0.00000000    0.00000000    0.00000000
     atom    3 type  1   force =     0.00000000    0.00000000    0.00000000
     atom    4 type  1   force =     0.00000000    0.00000000    0.00000000

     Total force =     0.000000     Total SCF correction =     0.000000


     entering subroutine stress ...

          total   stress  (Ry/bohr**3)                   (kbar)     P=   -0.27
  -0.00000184   0.00000000   0.00000000         -0.27      0.00      0.00
   0.00000000  -0.00000184   0.00000000          0.00     -0.27      0.00
   0.00000000   0.00000000  -0.00000184          0.00      0.00     -0.27


     bfgs converged in   4 scf cycles and   3 bfgs steps
     (criteria: energy <  1.0E-04, force <  1.0E-03, cell <  5.0E-01)

     End of BFGS Geometry Optimization

     Final enthalpy =     -44.2103110459 Ry
Begin final coordinates
     new unit-cell volume =    200.56646 a.u.^3 (    29.72088 Ang^3 )

CELL_PARAMETERS (alat=  6.04709000)
   0.967994749   0.000000000   0.000000000
   0.000000000   0.967994749   0.000000000
   0.000000000   0.000000000   0.967994749

ATOMIC_POSITIONS (crystal)
C        0.000000000   0.000000000   0.000000000
C        0.500000000   0.500000000   0.000000000
C        0.000000000   0.500000000   0.500000000
C        0.500000000   0.000000000   0.500000000
End final coordinates



     A final scf calculation at the relaxed structure.
     The G-vectors are recalculated for the final unit cell
     Results may differ from those at the preceding step.

     Parallelization info
     --------------------
     sticks:   dense  smooth     PW     G-vecs:    dense   smooth      PW
     Min         273     138     44                 6799     2404     434
     Max         274     139     45                 6802     2413     437
     Sum        1093     553    177                27201     9627    1743



     bravais-lattice index     =            1
     lattice parameter (alat)  =       6.0471  a.u.
     unit-cell volume          =     200.5665 (a.u.)^3
     number of atoms/cell      =            4
     number of atomic types    =            1
     number of electrons       =        16.00
     number of Kohn-Sham states=            8
     kinetic-energy cutoff     =      50.0000  Ry
     charge density cutoff     =     400.0000  Ry
     convergence threshold     =      1.0E-08
     mixing beta               =       0.7000
     number of iterations used =            8  plain     mixing
     Exchange-correlation      =  SLA  PW   PBE  PBE ( 1  4  3  4 0 0)

     celldm(1)=   6.047090  celldm(2)=   0.000000  celldm(3)=   0.000000
     celldm(4)=   0.000000  celldm(5)=   0.000000  celldm(6)=   0.000000

     crystal axes: (cart. coord. in units of alat)
               a(1) = (   0.967995   0.000000   0.000000 )  
               a(2) = (   0.000000   0.967995   0.000000 )  
               a(3) = (   0.000000   0.000000   0.967995 )  

     reciprocal axes: (cart. coord. in units 2 pi/alat)
               b(1) = (  1.033063  0.000000  0.000000 )  
               b(2) = (  0.000000  1.033063  0.000000 )  
               b(3) = (  0.000000  0.000000  1.033063 )  


     PseudoPot. # 1 for C  read from file:
     ../C.pbe-rrkjus.UPF
     MD5 check sum: 00fb224312de0c5b6853bd333518df6f
     Pseudo is Ultrasoft, Zval =  4.0
     Generated by new atomic code, or converted to UPF format
     Using radial grid of  627 points,  4 beta functions with: 
                l(1) =   0
                l(2) =   0
                l(3) =   1
                l(4) =   1
     Q(r) pseudized with 0 coefficients 


     atomic species   valence    mass     pseudopotential
        C              4.00    12.01060     C ( 1.00)

     48 Sym. Ops., with inversion, found



   Cartesian axes

     site n.     atom                  positions (alat units)
         1           C   tau(   1) = (   0.0000000   0.0000000   0.0000000  )
         2           C   tau(   2) = (   0.4839974   0.4839974   0.0000000  )
         3           C   tau(   3) = (   0.0000000   0.4839974   0.4839974  )
         4           C   tau(   4) = (   0.4839974   0.0000000   0.4839974  )

     number of k points=    20
                       cart. coord. in units 2pi/alat
        k(    1) = (   0.0737902   0.0737902   0.0737902), wk =   0.0466472
        k(    2) = (   0.0737902   0.0737902   0.2213707), wk =   0.1399417
        k(    3) = (   0.0737902   0.0737902   0.3689512), wk =   0.1399417
        k(    4) = (   0.0737902   0.0737902  -0.5165317), wk =   0.0699708
        k(    5) = (   0.0737902   0.2213707   0.2213707), wk =   0.1399417
        k(    6) = (   0.0737902   0.2213707   0.3689512), wk =   0.2798834
        k(    7) = (   0.0737902   0.2213707  -0.5165317), wk =   0.1399417
        k(    8) = (   0.0737902   0.3689512   0.3689512), wk =   0.1399417
        k(    9) = (   0.0737902   0.3689512  -0.5165317), wk =   0.1399417
        k(   10) = (   0.0737902  -0.5165317  -0.5165317), wk =   0.0349854
        k(   11) = (   0.2213707   0.2213707   0.2213707), wk =   0.0466472
        k(   12) = (   0.2213707   0.2213707   0.3689512), wk =   0.1399417
        k(   13) = (   0.2213707   0.2213707  -0.5165317), wk =   0.0699708
        k(   14) = (   0.2213707   0.3689512   0.3689512), wk =   0.1399417
        k(   15) = (   0.2213707   0.3689512  -0.5165317), wk =   0.1399417
        k(   16) = (   0.2213707  -0.5165317  -0.5165317), wk =   0.0349854
        k(   17) = (   0.3689512   0.3689512   0.3689512), wk =   0.0466472
        k(   18) = (   0.3689512   0.3689512  -0.5165317), wk =   0.0699708
        k(   19) = (   0.3689512  -0.5165317  -0.5165317), wk =   0.0349854
        k(   20) = (  -0.5165317  -0.5165317  -0.5165317), wk =   0.0058309

     Dense  grid:    27201 G-vectors     FFT dimensions: (  40,  40,  40)

     Smooth grid:     9627 G-vectors     FFT dimensions: (  27,  27,  27)

     Largest allocated arrays     est. size (Mb)     dimensions
        Kohn-Sham Wavefunctions         0.04 Mb     (     310,    8)
        NL pseudopotentials             0.15 Mb     (     310,   32)
        Each V/rho on FFT grid          0.24 Mb     (   16000)
        Each G-vector array             0.05 Mb     (    6801)
        G-vector shells                 0.00 Mb     (     291)
     Largest temporary arrays     est. size (Mb)     dimensions
        Auxiliary wavefunctions         0.15 Mb     (     310,   32)
        Each subspace H/S matrix        0.02 Mb     (      32,   32)
        Each <psi_i|beta_j> matrix      0.00 Mb     (      32,    8)
        Arrays for rho mixing           1.95 Mb     (   16000,    8)

     Initial potential from superposition of free atoms

     starting charge   15.99979, renormalised to   16.00000
     Starting wfc are   16 randomized atomic wfcs

     Writing output data file pwscf.save

     total cpu time spent up to now is       39.9 secs

     Self-consistent Calculation

     iteration #  1     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.00E-06,  avg # of iterations =  7.2

     total cpu time spent up to now is       40.7 secs

     total energy              =     -44.20970082 Ry
     Harris-Foulkes estimate   =     -44.21029478 Ry
     estimated scf accuracy    <       0.00317437 Ry

     iteration #  2     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.98E-05,  avg # of iterations =  4.2

     total cpu time spent up to now is       41.2 secs

     total energy              =     -44.20886955 Ry
     Harris-Foulkes estimate   =     -44.21222647 Ry
     estimated scf accuracy    <       0.01205065 Ry

     iteration #  3     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.98E-05,  avg # of iterations =  3.0

     total cpu time spent up to now is       41.6 secs

     total energy              =     -44.20988904 Ry
     Harris-Foulkes estimate   =     -44.21002406 Ry
     estimated scf accuracy    <       0.00045692 Ry

     iteration #  4     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.86E-06,  avg # of iterations =  3.6

     total cpu time spent up to now is       42.0 secs

     total energy              =     -44.21021197 Ry
     Harris-Foulkes estimate   =     -44.21036781 Ry
     estimated scf accuracy    <       0.00102472 Ry

     iteration #  5     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.86E-06,  avg # of iterations =  1.1

     total cpu time spent up to now is       42.3 secs

     total energy              =     -44.21003628 Ry
     Harris-Foulkes estimate   =     -44.21022888 Ry
     estimated scf accuracy    <       0.00051886 Ry

     iteration #  6     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.86E-06,  avg # of iterations =  2.8

     total cpu time spent up to now is       42.7 secs

     total energy              =     -44.21017694 Ry
     Harris-Foulkes estimate   =     -44.21019362 Ry
     estimated scf accuracy    <       0.00009322 Ry

     iteration #  7     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  5.83E-07,  avg # of iterations =  1.8

     total cpu time spent up to now is       42.9 secs

     total energy              =     -44.21019908 Ry
     Harris-Foulkes estimate   =     -44.21019126 Ry
     estimated scf accuracy    <       0.00006575 Ry

     iteration #  8     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  4.11E-07,  avg # of iterations =  1.0

     total cpu time spent up to now is       43.2 secs

     total energy              =     -44.21017780 Ry
     Harris-Foulkes estimate   =     -44.21019973 Ry
     estimated scf accuracy    <       0.00008227 Ry

     iteration #  9     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  4.11E-07,  avg # of iterations =  2.0

     total cpu time spent up to now is       43.5 secs

     total energy              =     -44.21018578 Ry
     Harris-Foulkes estimate   =     -44.21018606 Ry
     estimated scf accuracy    <       0.00000328 Ry

     iteration # 10     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.05E-08,  avg # of iterations =  3.2

     total cpu time spent up to now is       43.9 secs

     total energy              =     -44.21018626 Ry
     Harris-Foulkes estimate   =     -44.21018671 Ry
     estimated scf accuracy    <       0.00000069 Ry

     iteration # 11     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  4.34E-09,  avg # of iterations =  4.6

     total cpu time spent up to now is       44.4 secs

     total energy              =     -44.21018794 Ry
     Harris-Foulkes estimate   =     -44.21018837 Ry
     estimated scf accuracy    <       0.00000977 Ry

     iteration # 12     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  4.34E-09,  avg # of iterations =  1.0

     total cpu time spent up to now is       44.7 secs

     total energy              =     -44.21018734 Ry
     Harris-Foulkes estimate   =     -44.21018796 Ry
     estimated scf accuracy    <       0.00000836 Ry

     iteration # 13     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  4.34E-09,  avg # of iterations =  2.1

     total cpu time spent up to now is       45.0 secs

     total energy              =     -44.21018624 Ry
     Harris-Foulkes estimate   =     -44.21018742 Ry
     estimated scf accuracy    <       0.00000475 Ry

     iteration # 14     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  4.34E-09,  avg # of iterations =  3.4

     total cpu time spent up to now is       45.5 secs

     total energy              =     -44.21018705 Ry
     Harris-Foulkes estimate   =     -44.21018670 Ry
     estimated scf accuracy    <       0.00000015 Ry

     iteration # 15     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  9.21E-10,  avg # of iterations =  5.0

     total cpu time spent up to now is       46.1 secs

     total energy              =     -44.21032305 Ry
     Harris-Foulkes estimate   =     -44.21032558 Ry
     estimated scf accuracy    <       0.00041529 Ry

     iteration # 16     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  9.21E-10,  avg # of iterations =  2.2

     total cpu time spent up to now is       46.4 secs

     total energy              =     -44.21031253 Ry
     Harris-Foulkes estimate   =     -44.21032307 Ry
     estimated scf accuracy    <       0.00040209 Ry

     iteration # 17     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  9.21E-10,  avg # of iterations =  4.3

     total cpu time spent up to now is       46.9 secs

     total energy              =     -44.21031322 Ry
     Harris-Foulkes estimate   =     -44.21031288 Ry
     estimated scf accuracy    <       0.00034043 Ry

     iteration # 18     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  9.21E-10,  avg # of iterations =  1.0

     total cpu time spent up to now is       47.2 secs

     total energy              =     -44.21031321 Ry
     Harris-Foulkes estimate   =     -44.21031322 Ry
     estimated scf accuracy    <       0.00034143 Ry

     iteration # 19     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  9.21E-10,  avg # of iterations =  1.0

     total cpu time spent up to now is       47.5 secs

     total energy              =     -44.21031303 Ry
     Harris-Foulkes estimate   =     -44.21031321 Ry
     estimated scf accuracy    <       0.00034153 Ry

     iteration # 20     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  9.21E-10,  avg # of iterations =  1.0

     total cpu time spent up to now is       47.7 secs

     total energy              =     -44.21031132 Ry
     Harris-Foulkes estimate   =     -44.21031303 Ry
     estimated scf accuracy    <       0.00034125 Ry

     iteration # 21     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  9.21E-10,  avg # of iterations =  1.4

     total cpu time spent up to now is       48.0 secs

     total energy              =     -44.21031034 Ry
     Harris-Foulkes estimate   =     -44.21031132 Ry
     estimated scf accuracy    <       0.00033391 Ry

     iteration # 22     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  9.21E-10,  avg # of iterations =  1.0

     total cpu time spent up to now is       48.3 secs

     total energy              =     -44.21031002 Ry
     Harris-Foulkes estimate   =     -44.21031035 Ry
     estimated scf accuracy    <       0.00033068 Ry

     iteration # 23     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  9.21E-10,  avg # of iterations =  1.0

     total cpu time spent up to now is       48.5 secs

     total energy              =     -44.21018671 Ry
     Harris-Foulkes estimate   =     -44.21031002 Ry
     estimated scf accuracy    <       0.00032905 Ry

     iteration # 24     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     c_bands:  2 eigenvalues not converged
     ethr =  9.21E-10,  avg # of iterations =  8.4

     total cpu time spent up to now is       49.4 secs

     total energy              =     -44.21024836 Ry
     Harris-Foulkes estimate   =     -44.21026331 Ry
     estimated scf accuracy    <       0.00003493 Ry

     iteration # 25     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     c_bands:  1 eigenvalues not converged
     ethr =  9.21E-10,  avg # of iterations =  7.3

     total cpu time spent up to now is       50.1 secs

     total energy              =     -44.21025767 Ry
     Harris-Foulkes estimate   =     -44.21025950 Ry
     estimated scf accuracy    <       0.00001103 Ry

     iteration # 26     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  9.21E-10,  avg # of iterations =  4.5

     total cpu time spent up to now is       50.7 secs

     total energy              =     -44.21025730 Ry
     Harris-Foulkes estimate   =     -44.21025807 Ry
     estimated scf accuracy    <       0.00000250 Ry

     iteration # 27     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  9.21E-10,  avg # of iterations =  4.7

     total cpu time spent up to now is       51.2 secs

     total energy              =     -44.21025768 Ry
     Harris-Foulkes estimate   =     -44.21025768 Ry
     estimated scf accuracy    <       0.00000001 Ry

     iteration # 28     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  7.90E-11,  avg # of iterations =  2.1

     total cpu time spent up to now is       51.5 secs

     End of self-consistent calculation

          k = 0.0738 0.0738 0.0738 (  1207 PWs)   bands (ev):

    -8.1474   2.5471   2.5477   2.5477   5.9072   5.9088   5.9088  11.6855

          k = 0.0738 0.0738 0.2214 (  1206 PWs)   bands (ev):

    -7.6125  -0.3425   3.0332   3.0338   6.2041   6.2050   9.0583   9.9493

          k = 0.0738 0.0738 0.3690 (  1202 PWs)   bands (ev):

    -6.5474  -2.8810   3.9405   3.9421   6.4963   6.4977   8.3078   8.3104

          k = 0.0738 0.0738-0.5165 (  1192 PWs)   bands (ev):

    -4.9660  -4.9603   4.7493   4.7539   6.0827   6.0897   7.9019   7.9081

          k = 0.0738 0.2214 0.2214 (  1201 PWs)   bands (ev):

    -7.0787   0.1629   0.1631   3.4847   6.0814   8.1452   8.8517   8.8532

          k = 0.0738 0.2214 0.3690 (  1202 PWs)   bands (ev):

    -6.0160  -2.3618   1.1542   3.9117   5.1740   7.6876   8.1036   9.9626

          k = 0.0738 0.2214-0.5165 (  1194 PWs)   bands (ev):

    -4.4390  -4.4333   2.5616   2.5671   6.1176   6.1238   8.9924   8.9980

          k = 0.0738 0.3690 0.3690 (  1192 PWs)   bands (ev):

    -4.9589  -1.3336  -1.3335   2.0937   5.6861   8.6931   8.6948   8.8232

          k = 0.0738 0.3690-0.5165 (  1192 PWs)   bands (ev):

    -3.3921  -3.3865   0.1738   0.1794   7.0178   7.0238   9.9473   9.9528

          k = 0.0738-0.5165-0.5165 (  1204 PWs)   bands (ev):

    -1.8451  -1.8395  -1.8395  -1.8338   8.3552   8.3593   8.3593   8.3665

          k = 0.2214 0.2214 0.2214 (  1205 PWs)   bands (ev):

    -6.5460   0.6614   0.6620   0.6620   7.2397   7.2397   7.2430  10.6138

          k = 0.2214 0.2214 0.3690 (  1195 PWs)   bands (ev):

    -5.4860  -1.8451   1.6232   1.6244   5.1896   5.1925   8.2598  11.0426

          k = 0.2214 0.2214-0.5165 (  1188 PWs)   bands (ev):

    -3.9137  -3.9081   2.6004   2.6054   3.8098   3.8163   9.6145   9.6199

          k = 0.2214 0.3690 0.3690 (  1196 PWs)   bands (ev):

    -4.4319  -0.8240  -0.8239   2.1593   3.2994   6.1095   6.1112   9.2627

          k = 0.2214 0.3690-0.5165 (  1198 PWs)   bands (ev):

    -2.8708  -2.8651   0.6578   0.6633   4.2787   4.2847   7.4938   7.4994

          k = 0.2214-0.5165-0.5165 (  1196 PWs)   bands (ev):

    -1.3322  -1.3266  -1.3266  -1.3210   5.6694   5.6736   5.6736   5.6810

          k = 0.3690 0.3690 0.3690 (  1193 PWs)   bands (ev):

    -3.3847   0.1706   0.1718   0.1718   3.7921   3.7921   3.7958   7.0679

          k = 0.3690 0.3690-0.5165 (  1194 PWs)   bands (ev):

    -1.8376  -1.8319   1.2619   1.2669   2.2457   2.2523   5.2054   5.2112

          k = 0.3690-0.5165-0.5165 (  1184 PWs)   bands (ev):

    -0.3270  -0.3208  -0.3208  -0.3159   3.3031   3.3068   3.3068   3.3150

          k =-0.5165-0.5165-0.5165 (  1208 PWs)   bands (ev):

     0.8062   0.8160   0.8160   0.8160   1.7078   1.7078   1.7078   1.7209

     highest occupied level (ev):    11.6855

!    total energy              =     -44.21025767 Ry
     Harris-Foulkes estimate   =     -44.21025768 Ry
     estimated scf accuracy    <          4.1E-09 Ry

     The total energy is the sum of the following terms:

     one-electron contribution =      17.01890467 Ry
     hartree contribution      =       1.62807470 Ry
     xc contribution           =     -12.72849393 Ry
     ewald contribution        =     -50.12874312 Ry

     convergence has been achieved in  28 iterations

     Forces acting on atoms (Ry/au):

     atom    1 type  1   force =     0.00000000    0.00000000    0.00000000
     atom    2 type  1   force =     0.00000000    0.00000000    0.00000000
     atom    3 type  1   force =     0.00000000    0.00000000    0.00000000
     atom    4 type  1   force =     0.00000000    0.00000000    0.00000000

     Total force =     0.000000     Total SCF correction =     0.000000


     entering subroutine stress ...

          total   stress  (Ry/bohr**3)                   (kbar)     P=   -0.74
  -0.00000502   0.00000000   0.00000000         -0.74      0.00      0.00
   0.00000000  -0.00000502   0.00000000          0.00     -0.74      0.00
   0.00000000   0.00000000  -0.00000502          0.00      0.00     -0.74


     Writing output data file pwscf.save

     init_run     :      0.98s CPU      1.01s WALL (       2 calls)
     electrons    :     33.34s CPU     43.80s WALL (       5 calls)
     update_pot   :      1.53s CPU      1.58s WALL (       3 calls)
     forces       :      0.84s CPU      0.84s WALL (       5 calls)
     stress       :      2.44s CPU      4.45s WALL (       5 calls)

     Called by init_run:
     wfcinit      :      0.33s CPU      0.34s WALL (       2 calls)
     potinit      :      0.22s CPU      0.22s WALL (       2 calls)

     Called by electrons:
     c_bands      :     25.73s CPU     35.53s WALL (     101 calls)
     sum_band     :      4.62s CPU      4.89s WALL (     101 calls)
     v_of_rho     :      1.95s CPU      2.02s WALL (     104 calls)
     newd         :      0.62s CPU      0.94s WALL (     104 calls)
     mix_rho      :      0.25s CPU      0.30s WALL (     101 calls)

     Called by c_bands:
     init_us_2    :      0.56s CPU      0.54s WALL (    4280 calls)
     cegterg      :     24.75s CPU     34.26s WALL (    2020 calls)

     Called by sum_band:
     sum_band:bec :      0.02s CPU      0.02s WALL (    2020 calls)
     addusdens    :      0.83s CPU      1.14s WALL (     101 calls)

     Called by *egterg:
     h_psi        :     18.48s CPU     18.41s WALL (    8492 calls)
     s_psi        :      0.36s CPU      0.38s WALL (    8492 calls)
     g_psi        :      0.12s CPU      0.10s WALL (    6432 calls)
     cdiaghg      :      4.38s CPU     13.55s WALL (    8352 calls)

     Called by h_psi:
     add_vuspsi   :      0.33s CPU      0.38s WALL (    8492 calls)

     General routines
     calbec       :      1.22s CPU      1.18s WALL (   11012 calls)
     fft          :      1.28s CPU      1.40s WALL (    1695 calls)
     ffts         :      0.03s CPU      0.04s WALL (     205 calls)
     fftw         :     18.23s CPU     18.07s WALL (  116098 calls)
     interpolate  :      0.19s CPU      0.22s WALL (     205 calls)
     davcio       :      0.00s CPU      0.00s WALL (      40 calls)

     Parallel routines
     fft_scatter  :      7.31s CPU      7.38s WALL (  117998 calls)

     PWSCF        :    39.58s CPU        52.35s WALL


   This run was terminated on:  15:30:59  26Feb2016            

=------------------------------------------------------------------------------=
   JOB DONE.
=------------------------------------------------------------------------------=
-------------- next part --------------

     Program PWSCF v.5.2.1 (svn rev. 11758) starts on 26Feb2016 at 15:34:37 

     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);
          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     4 processors
     R & G space division:  proc/nbgrp/npool/nimage =       4
     Reading input from C_FCC-min_pbe-rrkjus_7_50_a_3.2.in

     Current dimensions of program PWSCF are:
     Max number of different atomic species (ntypx) = 10
     Max number of k-points (npk) =  40000
     Max angular momentum in pseudopotentials (lmaxx) =  3
               file C.pbe-rrkjus.UPF: wavefunction(s)  2S 2P renormalized

     Subspace diagonalization in iterative solution of the eigenvalue problem:
     a serial algorithm will be used


     Parallelization info
     --------------------
     sticks:   dense  smooth     PW     G-vecs:    dense   smooth      PW
     Min         124      63     22                 1845      666     152
     Max         125      64     23                 1849      681     153
     Sum         499     253     91                 7391     2685     609



     bravais-lattice index     =            2
     lattice parameter (alat)  =       6.0471  a.u.
     unit-cell volume          =      55.2814 (a.u.)^3
     number of atoms/cell      =            1
     number of atomic types    =            1
     number of electrons       =         4.00
     number of Kohn-Sham states=            2
     kinetic-energy cutoff     =      50.0000  Ry
     charge density cutoff     =     400.0000  Ry
     convergence threshold     =      1.0E-06
     mixing beta               =       0.7000
     number of iterations used =            8  plain     mixing
     Exchange-correlation      =  SLA  PW   PBE  PBE ( 1  4  3  4 0 0)
     nstep                     =           50


     celldm(1)=   6.047090  celldm(2)=   0.000000  celldm(3)=   0.000000
     celldm(4)=   0.000000  celldm(5)=   0.000000  celldm(6)=   0.000000

     crystal axes: (cart. coord. in units of alat)
               a(1) = (  -0.500000   0.000000   0.500000 )  
               a(2) = (   0.000000   0.500000   0.500000 )  
               a(3) = (  -0.500000   0.500000   0.000000 )  

     reciprocal axes: (cart. coord. in units 2 pi/alat)
               b(1) = ( -1.000000 -1.000000  1.000000 )  
               b(2) = (  1.000000  1.000000  1.000000 )  
               b(3) = ( -1.000000  1.000000 -1.000000 )  


     PseudoPot. # 1 for C  read from file:
     ../C.pbe-rrkjus.UPF
     MD5 check sum: 00fb224312de0c5b6853bd333518df6f
     Pseudo is Ultrasoft, Zval =  4.0
     Generated by new atomic code, or converted to UPF format
     Using radial grid of  627 points,  4 beta functions with: 
                l(1) =   0
                l(2) =   0
                l(3) =   1
                l(4) =   1
     Q(r) pseudized with 0 coefficients 


     atomic species   valence    mass     pseudopotential
        C              4.00    12.01060     C ( 1.00)

     48 Sym. Ops., with inversion, found



   Cartesian axes

     site n.     atom                  positions (alat units)
         1           C   tau(   1) = (   0.0000000   0.0000000   0.0000000  )

     number of k points=    44
                       cart. coord. in units 2pi/alat
        k(    1) = (  -0.0714286   0.0714286   0.0714286), wk =   0.0116618
        k(    2) = (  -0.2142857   0.2142857  -0.0714286), wk =   0.0349854
        k(    3) = (  -0.3571429   0.3571429  -0.2142857), wk =   0.0349854
        k(    4) = (   0.5000000  -0.5000000   0.6428571), wk =   0.0349854
        k(    5) = (   0.3571429  -0.3571429   0.5000000), wk =   0.0349854
        k(    6) = (   0.2142857  -0.2142857   0.3571429), wk =   0.0349854
        k(    7) = (   0.0714286  -0.0714286   0.2142857), wk =   0.0349854
        k(    8) = (  -0.0714286   0.3571429   0.0714286), wk =   0.0349854
        k(    9) = (  -0.2142857   0.5000000  -0.0714286), wk =   0.0699708
        k(   10) = (   0.6428571  -0.3571429   0.7857143), wk =   0.0699708
        k(   11) = (   0.5000000  -0.2142857   0.6428571), wk =   0.0699708
        k(   12) = (   0.3571429  -0.0714286   0.5000000), wk =   0.0699708
        k(   13) = (   0.2142857   0.0714286   0.3571429), wk =   0.0699708
        k(   14) = (  -0.0714286   0.6428571   0.0714286), wk =   0.0349854
        k(   15) = (   0.7857143  -0.2142857   0.9285714), wk =   0.0699708
        k(   16) = (   0.6428571  -0.0714286   0.7857143), wk =   0.0699708
        k(   17) = (   0.5000000   0.0714286   0.6428571), wk =   0.0699708
        k(   18) = (   0.3571429   0.2142857   0.5000000), wk =   0.0699708
        k(   19) = (  -0.0714286  -1.0714286   0.0714286), wk =   0.0349854
        k(   20) = (  -0.2142857  -0.9285714  -0.0714286), wk =   0.0699708
        k(   21) = (  -0.3571429  -0.7857143  -0.2142857), wk =   0.0699708
        k(   22) = (  -0.5000000  -0.6428571  -0.3571429), wk =   0.0349854
        k(   23) = (  -0.0714286  -0.7857143   0.0714286), wk =   0.0349854
        k(   24) = (  -0.2142857  -0.6428571  -0.0714286), wk =   0.0699708
        k(   25) = (  -0.0714286  -0.5000000   0.0714286), wk =   0.0349854
        k(   26) = (  -0.2142857   0.2142857   0.2142857), wk =   0.0116618
        k(   27) = (  -0.3571429   0.3571429   0.0714286), wk =   0.0349854
        k(   28) = (   0.5000000  -0.5000000   0.9285714), wk =   0.0349854
        k(   29) = (   0.3571429  -0.3571429   0.7857143), wk =   0.0349854
        k(   30) = (   0.2142857  -0.2142857   0.6428571), wk =   0.0349854
        k(   31) = (  -0.2142857   0.5000000   0.2142857), wk =   0.0349854
        k(   32) = (   0.6428571  -0.3571429   1.0714286), wk =   0.0699708
        k(   33) = (   0.5000000  -0.2142857   0.9285714), wk =   0.0699708
        k(   34) = (   0.3571429  -0.0714286   0.7857143), wk =   0.0699708
        k(   35) = (  -0.2142857  -1.2142857   0.2142857), wk =   0.0349854
        k(   36) = (  -0.3571429  -1.0714286   0.0714286), wk =   0.0699708
        k(   37) = (  -0.5000000  -0.9285714  -0.0714286), wk =   0.0349854
        k(   38) = (  -0.2142857  -0.9285714   0.2142857), wk =   0.0349854
        k(   39) = (  -0.3571429   0.3571429   0.3571429), wk =   0.0116618
        k(   40) = (   0.5000000  -0.5000000   1.2142857), wk =   0.0349854
        k(   41) = (   0.3571429  -0.3571429   1.0714286), wk =   0.0349854
        k(   42) = (  -0.3571429  -1.3571429   0.3571429), wk =   0.0349854
        k(   43) = (  -0.5000000  -1.2142857   0.2142857), wk =   0.0349854
        k(   44) = (   0.5000000  -0.5000000  -0.5000000), wk =   0.0058309

     Dense  grid:     7391 G-vectors     FFT dimensions: (  27,  27,  27)

     Smooth grid:     2685 G-vectors     FFT dimensions: (  20,  20,  20)

     Largest allocated arrays     est. size (Mb)     dimensions
        Kohn-Sham Wavefunctions         0.00 Mb     (     102,    2)
        NL pseudopotentials             0.01 Mb     (     102,    8)
        Each V/rho on FFT grid          0.08 Mb     (    5103)
        Each G-vector array             0.01 Mb     (    1849)
        G-vector shells                 0.01 Mb     (    1849)
     Largest temporary arrays     est. size (Mb)     dimensions
        Auxiliary wavefunctions         0.01 Mb     (     102,    8)
        Each subspace H/S matrix        0.00 Mb     (       8,    8)
        Each <psi_i|beta_j> matrix      0.00 Mb     (       8,    2)
        Arrays for rho mixing           0.62 Mb     (    5103,    8)

     Initial potential from superposition of free atoms

     starting charge    3.99995, renormalised to    4.00000
     Starting wfc are    4 randomized atomic wfcs

     total cpu time spent up to now is        0.3 secs

     Self-consistent Calculation

     iteration #  1     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.00E-02,  avg # of iterations =  1.8

     Threshold (ethr) on eigenvalues was too large:
     Diagonalizing with lowered threshold

     Davidson diagonalization with overlap
     ethr =  6.09E-06,  avg # of iterations =  3.5

     total cpu time spent up to now is        0.4 secs

     total energy              =     -10.93209378 Ry
     Harris-Foulkes estimate   =     -10.93208011 Ry
     estimated scf accuracy    <       0.00024899 Ry

     iteration #  2     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  6.22E-06,  avg # of iterations =  1.0

     total cpu time spent up to now is        0.5 secs

     total energy              =     -10.93211186 Ry
     Harris-Foulkes estimate   =     -10.93210350 Ry
     estimated scf accuracy    <       0.00001650 Ry

     iteration #  3     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  4.12E-07,  avg # of iterations =  2.2

     total cpu time spent up to now is        0.6 secs

     End of self-consistent calculation

          k =-0.0714 0.0714 0.0714 (   332 PWs)   bands (ev):

    -8.3578  15.4456

          k =-0.2143 0.2143-0.0714 (   325 PWs)   bands (ev):

    -7.3582  13.1605

          k =-0.3571 0.3571-0.2143 (   333 PWs)   bands (ev):

    -4.8892   7.9340

          k = 0.5000-0.5000 0.6429 (   332 PWs)   bands (ev):

    -1.1254   2.4841

          k = 0.3571-0.3571 0.5000 (   335 PWs)   bands (ev):

    -2.4870   4.1997

          k = 0.2143-0.2143 0.3571 (   331 PWs)   bands (ev):

    -5.8710   9.8020

          k = 0.0714-0.0714 0.2143 (   329 PWs)   bands (ev):

    -7.8573  14.4659

          k =-0.0714 0.3571 0.0714 (   326 PWs)   bands (ev):

    -6.8613  13.1816

          k =-0.2143 0.5000-0.0714 (   328 PWs)   bands (ev):

    -4.8908  10.2486

          k = 0.6429-0.3571 0.7857 (   329 PWs)   bands (ev):

    -1.5492   5.0333

          k = 0.5000-0.2143 0.6429 (   330 PWs)   bands (ev):

    -0.2241   3.4010

          k = 0.3571-0.0714 0.5000 (   326 PWs)   bands (ev):

    -3.9183   8.6088

          k = 0.2143 0.0714 0.3571 (   326 PWs)   bands (ev):

    -6.3653  11.6825

          k =-0.0714 0.6429 0.0714 (   327 PWs)   bands (ev):

    -3.4381  10.0156

          k = 0.7857-0.2143 0.9286 (   331 PWs)   bands (ev):

    -0.6116   7.3301

          k = 0.6429-0.0714 0.7857 (   334 PWs)   bands (ev):

     2.5729   4.4003

          k = 0.5000 0.0714 0.6429 (   332 PWs)   bands (ev):

    -0.6324   5.8962

          k = 0.3571 0.2143 0.5000 (   328 PWs)   bands (ev):

    -3.4364   6.3048

          k =-0.0714-1.0714 0.0714 (   334 PWs)   bands (ev):

     1.6489   4.5977

          k =-0.2143-0.9286-0.0714 (   329 PWs)   bands (ev):

     2.0620   4.8749

          k =-0.3571-0.7857-0.2143 (   331 PWs)   bands (ev):

     0.6687   4.2278

          k =-0.5000-0.6429-0.3571 (   330 PWs)   bands (ev):

     0.1402   1.7104

          k =-0.0714-0.7857 0.0714 (   325 PWs)   bands (ev):

    -1.0710   7.5242

          k =-0.2143-0.6429-0.0714 (   327 PWs)   bands (ev):

    -2.9582   8.9162

          k =-0.0714-0.5000 0.0714 (   327 PWs)   bands (ev):

    -5.3811  11.7622

          k =-0.2143 0.2143 0.2143 (   320 PWs)   bands (ev):

    -6.8606  11.5184

          k =-0.3571 0.3571 0.0714 (   328 PWs)   bands (ev):

    -5.3794  10.0841

          k = 0.5000-0.5000 0.9286 (   333 PWs)   bands (ev):

    -2.4837   7.1041

          k = 0.3571-0.3571 0.7857 (   334 PWs)   bands (ev):

     0.9755   2.6811

          k = 0.2143-0.2143 0.6429 (   327 PWs)   bands (ev):

    -2.4827   6.9847

          k =-0.2143 0.5000 0.2143 (   330 PWs)   bands (ev):

    -4.4029   8.2525

          k = 0.6429-0.3571 1.0714 (   329 PWs)   bands (ev):

    -2.0112   7.3811

          k = 0.5000-0.2143 0.9286 (   333 PWs)   bands (ev):

     1.5085   5.1233

          k = 0.3571-0.0714 0.7857 (   335 PWs)   bands (ev):

     0.2804   6.4120

          k =-0.2143-1.2143 0.2143 (   330 PWs)   bands (ev):

    -0.1649   6.0025

          k =-0.3571-1.0714 0.0714 (   331 PWs)   bands (ev):

     2.7863   5.2343

          k =-0.5000-0.9286-0.0714 (   330 PWs)   bands (ev):

     3.3037   5.2429

          k =-0.2143-0.9286 0.2143 (   333 PWs)   bands (ev):

     2.4047   4.8354

          k =-0.3571 0.3571 0.3571 (   332 PWs)   bands (ev):

    -3.9173   5.9093

          k = 0.5000-0.5000 1.2143 (   332 PWs)   bands (ev):

    -2.0171   4.6363

          k = 0.3571-0.3571 1.0714 (   335 PWs)   bands (ev):

     1.0732   4.7431

          k =-0.3571-1.3571 0.3571 (   333 PWs)   bands (ev):

    -0.6709   2.9381

          k =-0.5000-1.2143 0.2143 (   328 PWs)   bands (ev):

     1.3869   3.1551

          k = 0.5000-0.5000-0.5000 (   332 PWs)   bands (ev):

    -0.2824   1.2126

     highest occupied level (ev):    15.4456

!    total energy              =     -10.93211640 Ry
     Harris-Foulkes estimate   =     -10.93211628 Ry
     estimated scf accuracy    <       0.00000027 Ry

     The total energy is the sum of the following terms:

     one-electron contribution =       3.83477214 Ry
     hartree contribution      =       0.51219164 Ry
     xc contribution           =      -3.14799015 Ry
     ewald contribution        =     -12.13109003 Ry

     convergence has been achieved in   3 iterations

     Forces acting on atoms (Ry/au):

     atom    1 type  1   force =     0.00000000    0.00000000    0.00000000

     Total force =     0.000000     Total SCF correction =     0.000000


     entering subroutine stress ...

          total   stress  (Ry/bohr**3)                   (kbar)     P=  308.86
   0.00209957   0.00000000   0.00000000        308.86      0.00      0.00
   0.00000000   0.00209957  -0.00000000          0.00    308.86     -0.00
   0.00000000  -0.00000000   0.00209957          0.00     -0.00    308.86


     BFGS Geometry Optimization

     number of scf cycles    =   1
     number of bfgs steps    =   0

     enthalpy new            =     -10.9321163970 Ry

     new trust radius        =       0.0780531906 bohr
     new conv_thr            =       0.0000010000 Ry

     new unit-cell volume =     64.45141 a.u.^3 (     9.55071 Ang^3 )

CELL_PARAMETERS (alat=  6.04709000)
  -0.526244664  -0.000000000   0.526244664
   0.000000000   0.526244664   0.526244664
  -0.526244664   0.526244664  -0.000000000

ATOMIC_POSITIONS (crystal)
C        0.000000000   0.000000000   0.000000000



     Writing output data file pwscf.save
     NEW-OLD atomic charge density approx. for the potential
     extrapolated charge    4.56910, renormalised to    4.00000

     total cpu time spent up to now is        1.1 secs

     Self-consistent Calculation

     iteration #  1     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.00E-06,  avg # of iterations =  6.5

     total cpu time spent up to now is        1.3 secs

     total energy              =     -10.93855513 Ry
     Harris-Foulkes estimate   =     -11.33897845 Ry
     estimated scf accuracy    <       0.00222621 Ry

     iteration #  2     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  5.57E-05,  avg # of iterations =  3.1

     total cpu time spent up to now is        1.4 secs

     total energy              =     -10.94492079 Ry
     Harris-Foulkes estimate   =     -10.94560047 Ry
     estimated scf accuracy    <       0.00226730 Ry

     iteration #  3     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  5.57E-05,  avg # of iterations =  1.0

     total cpu time spent up to now is        1.5 secs

     total energy              =     -10.94466726 Ry
     Harris-Foulkes estimate   =     -10.94497624 Ry
     estimated scf accuracy    <       0.00070379 Ry

     iteration #  4     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.76E-05,  avg # of iterations =  1.0

     total cpu time spent up to now is        1.5 secs

     total energy              =     -10.94469614 Ry
     Harris-Foulkes estimate   =     -10.94471201 Ry
     estimated scf accuracy    <       0.00003079 Ry

     iteration #  5     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  7.70E-07,  avg # of iterations =  2.7

     total cpu time spent up to now is        1.6 secs

     End of self-consistent calculation

          k =-0.0679 0.0679 0.0679 (   332 PWs)   bands (ev):

    -8.7710  12.3847

          k =-0.2036 0.2036-0.0679 (   325 PWs)   bands (ev):

    -7.8801  10.3847

          k =-0.3393 0.3393-0.2036 (   333 PWs)   bands (ev):

    -5.6954   5.8707

          k = 0.4751-0.4751 0.6108 (   332 PWs)   bands (ev):

    -2.5286   1.2637

          k = 0.3393-0.3393 0.4751 (   335 PWs)   bands (ev):

    -3.6211   2.6591

          k = 0.2036-0.2036 0.3393 (   331 PWs)   bands (ev):

    -6.5604   7.4887

          k = 0.0679-0.0679 0.2036 (   329 PWs)   bands (ev):

    -8.3245  11.5245

          k =-0.0679 0.3393 0.0679 (   326 PWs)   bands (ev):

    -7.4373  10.3754

          k =-0.2036 0.4751-0.0679 (   328 PWs)   bands (ev):

    -5.6913   7.7927

          k = 0.6108-0.3393 0.7465 (   329 PWs)   bands (ev):

    -2.8028   3.3784

          k = 0.4751-0.2036 0.6108 (   330 PWs)   bands (ev):

    -1.7554   2.0809

          k = 0.3393-0.0679 0.4751 (   326 PWs)   bands (ev):

    -4.8397   6.4008

          k = 0.2036 0.0679 0.3393 (   326 PWs)   bands (ev):

    -6.9974   9.0808

          k =-0.0679 0.6108 0.0679 (   327 PWs)   bands (ev):

    -4.4050   7.3894

          k = 0.7465-0.2036 0.8823 (   331 PWs)   bands (ev):

    -1.9513   5.0504

          k = 0.6108-0.0679 0.7465 (   334 PWs)   bands (ev):

     0.3794   3.1522

          k = 0.4751 0.0679 0.6108 (   332 PWs)   bands (ev):

    -2.0250   4.1346

          k = 0.3393 0.2036 0.4751 (   328 PWs)   bands (ev):

    -4.4250   4.4590

          k =-0.0679-1.0180 0.0679 (   334 PWs)   bands (ev):

    -0.0269   2.7750

          k =-0.2036-0.8823-0.0679 (   329 PWs)   bands (ev):

     0.2538   3.0539

          k =-0.3393-0.7465-0.2036 (   331 PWs)   bands (ev):

    -0.9891   2.7804

          k =-0.4751-0.6108-0.3393 (   330 PWs)   bands (ev):

    -1.6504   0.8195

          k =-0.0679-0.7465 0.0679 (   325 PWs)   bands (ev):

    -2.3316   5.2154

          k =-0.2036-0.6108-0.0679 (   327 PWs)   bands (ev):

    -3.9902   6.5416

          k =-0.0679-0.4751 0.0679 (   327 PWs)   bands (ev):

    -6.1225   9.0475

          k =-0.2036 0.2036 0.2036 (   320 PWs)   bands (ev):

    -7.4378   8.9833

          k =-0.3393 0.3393 0.0679 (   328 PWs)   bands (ev):

    -6.1254   7.6890

          k = 0.4751-0.4751 0.8823 (   333 PWs)   bands (ev):

    -3.5957   5.1290

          k = 0.3393-0.3393 0.7465 (   334 PWs)   bands (ev):

    -0.9255   1.6687

          k = 0.2036-0.2036 0.6108 (   327 PWs)   bands (ev):

    -3.5846   5.0018

          k =-0.2036 0.4751 0.2036 (   330 PWs)   bands (ev):

    -5.2646   6.1281

          k = 0.6108-0.3393 1.0180 (   329 PWs)   bands (ev):

    -3.1791   5.3181

          k = 0.4751-0.2036 0.8823 (   333 PWs)   bands (ev):

    -0.3151   3.5898

          k = 0.3393-0.0679 0.7465 (   335 PWs)   bands (ev):

    -1.2327   4.4396

          k =-0.2036-1.1537 0.2036 (   330 PWs)   bands (ev):

    -1.5982   4.1039

          k =-0.3393-1.0180 0.0679 (   331 PWs)   bands (ev):

     0.6862   3.5287

          k =-0.4751-0.8823-0.0679 (   330 PWs)   bands (ev):

     0.9267   3.8839

          k =-0.2036-0.8823 0.2036 (   333 PWs)   bands (ev):

     0.4178   3.1545

          k =-0.3393 0.3393 0.3393 (   332 PWs)   bands (ev):

    -4.8482   4.1203

          k = 0.4751-0.4751 1.1537 (   332 PWs)   bands (ev):

    -3.2129   3.0446

          k = 0.3393-0.3393 1.0180 (   335 PWs)   bands (ev):

    -0.6814   3.2889

          k =-0.3393-1.2895 0.3393 (   333 PWs)   bands (ev):

    -2.1352   1.6650

          k =-0.4751-1.1537 0.2036 (   328 PWs)   bands (ev):

    -0.5742   2.0823

          k = 0.4751-0.4751-0.4751 (   332 PWs)   bands (ev):

    -2.0221   0.3826

     highest occupied level (ev):    12.3847

!    total energy              =     -10.94470857 Ry
     Harris-Foulkes estimate   =     -10.94470888 Ry
     estimated scf accuracy    <       0.00000064 Ry

     The total energy is the sum of the following terms:

     one-electron contribution =       3.02472528 Ry
     hartree contribution      =       0.62807942 Ry
     xc contribution           =      -3.07142014 Ry
     ewald contribution        =     -11.52609314 Ry

     convergence has been achieved in   5 iterations

     Forces acting on atoms (Ry/au):

     atom    1 type  1   force =     0.00000000    0.00000000    0.00000000

     Total force =     0.000000     Total SCF correction =     0.000000


     entering subroutine stress ...

          total   stress  (Ry/bohr**3)                   (kbar)     P=  109.36
   0.00074340   0.00000000  -0.00000000        109.36      0.00     -0.00
   0.00000000   0.00074340   0.00000000          0.00    109.36      0.00
  -0.00000000   0.00000000   0.00074340         -0.00      0.00    109.36


     number of scf cycles    =   2
     number of bfgs steps    =   1

     enthalpy old            =     -10.9321163970 Ry
     enthalpy new            =     -10.9447085684 Ry

     CASE: enthalpy_new < enthalpy_old

     new trust radius        =       0.0516752232 bohr
     new conv_thr            =       0.0000000100 Ry

     new unit-cell volume =     70.87669 a.u.^3 (    10.50284 Ang^3 )

CELL_PARAMETERS (alat=  6.04709000)
  -0.543181172  -0.000000000   0.543181172
   0.000000000   0.543181172   0.543181172
  -0.543181172   0.543181172  -0.000000000

ATOMIC_POSITIONS (crystal)
C        0.000000000   0.000000000   0.000000000



     Writing output data file pwscf.save
     NEW-OLD atomic charge density approx. for the potential
     extrapolated charge    4.36261, renormalised to    4.00000

     total cpu time spent up to now is        2.2 secs

     Self-consistent Calculation

     iteration #  1     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.00E-06,  avg # of iterations =  5.7

     total cpu time spent up to now is        2.3 secs

     total energy              =     -10.94421169 Ry
     Harris-Foulkes estimate   =     -11.17775954 Ry
     estimated scf accuracy    <       0.00155246 Ry

     iteration #  2     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  3.88E-05,  avg # of iterations =  2.7

     total cpu time spent up to now is        2.4 secs

     total energy              =     -10.94751447 Ry
     Harris-Foulkes estimate   =     -10.94788978 Ry
     estimated scf accuracy    <       0.00114845 Ry

     iteration #  3     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.87E-05,  avg # of iterations =  1.0

     total cpu time spent up to now is        2.5 secs

     total energy              =     -10.94742593 Ry
     Harris-Foulkes estimate   =     -10.94755268 Ry
     estimated scf accuracy    <       0.00030233 Ry

     iteration #  4     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  7.56E-06,  avg # of iterations =  1.0

     total cpu time spent up to now is        2.5 secs

     total energy              =     -10.94743154 Ry
     Harris-Foulkes estimate   =     -10.94744436 Ry
     estimated scf accuracy    <       0.00002434 Ry

     iteration #  5     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  6.08E-07,  avg # of iterations =  2.7

     total cpu time spent up to now is        2.6 secs

     total energy              =     -10.94743931 Ry
     Harris-Foulkes estimate   =     -10.94743936 Ry
     estimated scf accuracy    <       0.00000023 Ry

     iteration #  6     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  5.79E-09,  avg # of iterations =  2.6

     total cpu time spent up to now is        2.7 secs

     total energy              =     -10.94743948 Ry
     Harris-Foulkes estimate   =     -10.94743953 Ry
     estimated scf accuracy    <       0.00000008 Ry

     iteration #  7     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.03E-09,  avg # of iterations =  2.0

     total cpu time spent up to now is        2.8 secs

     End of self-consistent calculation

          k =-0.0658 0.0658 0.0658 (   332 PWs)   bands (ev):

    -9.0113  10.6726

          k =-0.1973 0.1973-0.0658 (   325 PWs)   bands (ev):

    -8.1859   8.8289

          k =-0.3288 0.3288-0.1973 (   333 PWs)   bands (ev):

    -6.1754   4.7202

          k = 0.4603-0.4603 0.5918 (   332 PWs)   bands (ev):

    -3.3802   0.6217

          k = 0.3288-0.3288 0.4603 (   335 PWs)   bands (ev):

    -4.3082   1.8241

          k = 0.1973-0.1973 0.3288 (   331 PWs)   bands (ev):

    -6.9684   6.1931

          k = 0.0658-0.0658 0.1973 (   329 PWs)   bands (ev):

    -8.5974   9.8759

          k =-0.0658 0.3288 0.0658 (   326 PWs)   bands (ev):

    -7.7760   8.7963

          k =-0.1973 0.4603-0.0658 (   328 PWs)   bands (ev):

    -6.1673   6.4142

          k = 0.5918-0.3288 0.7233 (   329 PWs)   bands (ev):

    -3.5646   2.4757

          k = 0.4603-0.1973 0.5918 (   330 PWs)   bands (ev):

    -2.6844   1.3771

          k = 0.3288-0.0658 0.4603 (   326 PWs)   bands (ev):

    -5.3908   5.1623

          k = 0.1973 0.0658 0.3288 (   326 PWs)   bands (ev):

    -7.3703   7.6206

          k =-0.0658 0.5918 0.0658 (   327 PWs)   bands (ev):

    -4.9845   5.9470

          k = 0.7233-0.1973 0.8548 (   331 PWs)   bands (ev):

    -2.7727   3.8350

          k = 0.5918-0.0658 0.7233 (   334 PWs)   bands (ev):

    -0.8973   2.4442

          k = 0.4603 0.0658 0.5918 (   332 PWs)   bands (ev):

    -2.8734   3.1607

          k = 0.3288 0.1973 0.4603 (   328 PWs)   bands (ev):

    -5.0189   3.4375

          k =-0.0658-0.9863 0.0658 (   334 PWs)   bands (ev):

    -1.1178   1.8855

          k =-0.1973-0.8548-0.0658 (   329 PWs)   bands (ev):

    -0.9084   2.1679

          k =-0.3288-0.7233-0.1973 (   331 PWs)   bands (ev):

    -2.0010   2.0067

          k =-0.4603-0.5918-0.3288 (   330 PWs)   bands (ev):

    -2.6751   0.3147

          k =-0.0658-0.7233 0.0658 (   325 PWs)   bands (ev):

    -3.1024   3.9748

          k =-0.1973-0.5918-0.0658 (   327 PWs)   bands (ev):

    -4.6105   5.2227

          k =-0.0658-0.4603 0.0658 (   327 PWs)   bands (ev):

    -6.5621   7.5225

          k =-0.1973 0.1973 0.1973 (   320 PWs)   bands (ev):

    -7.7774   7.5621

          k =-0.3288 0.3288 0.0658 (   328 PWs)   bands (ev):

    -6.5679   6.3449

          k = 0.4603-0.4603 0.8548 (   333 PWs)   bands (ev):

    -4.2661   4.0246

          k = 0.3288-0.3288 0.7233 (   334 PWs)   bands (ev):

    -2.0223   1.0942

          k = 0.1973-0.1973 0.5918 (   327 PWs)   bands (ev):

    -4.2495   3.9015

          k =-0.1973 0.4603 0.1973 (   330 PWs)   bands (ev):

    -5.7787   4.9411

          k = 0.5918-0.3288 0.9863 (   329 PWs)   bands (ev):

    -3.8854   4.1680

          k = 0.4603-0.1973 0.8548 (   333 PWs)   bands (ev):

    -1.4252   2.7561

          k = 0.3288-0.0658 0.7233 (   335 PWs)   bands (ev):

    -2.1635   3.3726

          k =-0.1973-1.1178 0.1973 (   330 PWs)   bands (ev):

    -2.4792   3.0771

          k =-0.3288-0.9863 0.0658 (   331 PWs)   bands (ev):

    -0.6047   2.6762

          k =-0.4603-0.8548-0.0658 (   330 PWs)   bands (ev):

    -0.4484   3.1119

          k =-0.1973-0.8548 0.1973 (   333 PWs)   bands (ev):

    -0.8190   2.3229

          k =-0.3288 0.3288 0.3288 (   332 PWs)   bands (ev):

    -5.4065   3.1332

          k = 0.4603-0.4603 1.1178 (   332 PWs)   bands (ev):

    -3.9380   2.1781

          k = 0.3288-0.3288 0.9863 (   335 PWs)   bands (ev):

    -1.7454   2.4952

          k =-0.3288-1.2493 0.3288 (   333 PWs)   bands (ev):

    -3.0242   0.9912

          k =-0.4603-1.1178 0.1973 (   328 PWs)   bands (ev):

    -1.7100   1.4732

          k = 0.4603-0.4603-0.4603 (   332 PWs)   bands (ev):

    -3.0136  -0.0873

     highest occupied level (ev):    10.6726

!    total energy              =     -10.94743949 Ry
     Harris-Foulkes estimate   =     -10.94743949 Ry
     estimated scf accuracy    <          4.4E-10 Ry

     The total energy is the sum of the following terms:

     one-electron contribution =       2.54220626 Ry
     hartree contribution      =       0.70603892 Ry
     xc contribution           =      -3.02897765 Ry
     ewald contribution        =     -11.16670703 Ry

     convergence has been achieved in   7 iterations

     Forces acting on atoms (Ry/au):

     atom    1 type  1   force =     0.00000000    0.00000000    0.00000000

     Total force =     0.000000     Total SCF correction =     0.000000


     entering subroutine stress ...

          total   stress  (Ry/bohr**3)                   (kbar)     P=   19.64
   0.00013348  -0.00000000  -0.00000000         19.64     -0.00     -0.00
  -0.00000000   0.00013348   0.00000000         -0.00     19.64      0.00
  -0.00000000   0.00000000   0.00013348         -0.00      0.00     19.64


     number of scf cycles    =   3
     number of bfgs steps    =   2

     enthalpy old            =     -10.9447085684 Ry
     enthalpy new            =     -10.9474394928 Ry

     CASE: enthalpy_new < enthalpy_old

     new trust radius        =       0.0124184806 bohr
     new conv_thr            =       0.0000000100 Ry

     new unit-cell volume =     72.45652 a.u.^3 (    10.73695 Ang^3 )

CELL_PARAMETERS (alat=  6.04709000)
  -0.547187362  -0.000000000   0.547187362
   0.000000000   0.547187362   0.547187362
  -0.547187362   0.547187362  -0.000000000

ATOMIC_POSITIONS (crystal)
C        0.000000000   0.000000000   0.000000000



     Writing output data file pwscf.save
     NEW-OLD atomic charge density approx. for the potential
     extrapolated charge    4.08721, renormalised to    4.00000

     total cpu time spent up to now is        3.4 secs

     Self-consistent Calculation

     iteration #  1     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.00E-06,  avg # of iterations =  3.5

     total cpu time spent up to now is        3.5 secs

     total energy              =     -10.94734397 Ry
     Harris-Foulkes estimate   =     -11.00158585 Ry
     estimated scf accuracy    <       0.00012775 Ry

     iteration #  2     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  3.19E-06,  avg # of iterations =  2.4

     total cpu time spent up to now is        3.6 secs

     total energy              =     -10.94755488 Ry
     Harris-Foulkes estimate   =     -10.94757830 Ry
     estimated scf accuracy    <       0.00006725 Ry

     iteration #  3     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.68E-06,  avg # of iterations =  1.0

     total cpu time spent up to now is        3.6 secs

     total energy              =     -10.94755173 Ry
     Harris-Foulkes estimate   =     -10.94755782 Ry
     estimated scf accuracy    <       0.00001481 Ry

     iteration #  4     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  3.70E-07,  avg # of iterations =  1.3

     total cpu time spent up to now is        3.7 secs

     total energy              =     -10.94755220 Ry
     Harris-Foulkes estimate   =     -10.94755299 Ry
     estimated scf accuracy    <       0.00000147 Ry

     iteration #  5     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  3.68E-08,  avg # of iterations =  2.7

     total cpu time spent up to now is        3.8 secs

     total energy              =     -10.94755277 Ry
     Harris-Foulkes estimate   =     -10.94755280 Ry
     estimated scf accuracy    <       0.00000006 Ry

     iteration #  6     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.41E-09,  avg # of iterations =  2.4

     total cpu time spent up to now is        3.8 secs

     End of self-consistent calculation

          k =-0.0653 0.0653 0.0653 (   332 PWs)   bands (ev):

    -9.0647  10.2963

          k =-0.1958 0.1958-0.0653 (   325 PWs)   bands (ev):

    -8.2544   8.4868

          k =-0.3263 0.3263-0.1958 (   333 PWs)   bands (ev):

    -6.2840   4.4681

          k = 0.4569-0.4569 0.5874 (   332 PWs)   bands (ev):

    -3.5735   0.4843

          k = 0.3263-0.3263 0.4569 (   335 PWs)   bands (ev):

    -4.4648   1.6438

          k = 0.1958-0.1958 0.3263 (   331 PWs)   bands (ev):

    -7.0604   5.9084

          k = 0.0653-0.0653 0.1958 (   329 PWs)   bands (ev):

    -8.6582   9.5133

          k =-0.0653 0.3263 0.0653 (   326 PWs)   bands (ev):

    -7.8520   8.4486

          k =-0.1958 0.4569-0.0653 (   328 PWs)   bands (ev):

    -6.2749   6.1115

          k = 0.5874-0.3263 0.7180 (   329 PWs)   bands (ev):

    -3.7386   2.2803

          k = 0.4569-0.1958 0.5874 (   330 PWs)   bands (ev):

    -2.8954   1.2256

          k = 0.3263-0.0653 0.4569 (   326 PWs)   bands (ev):

    -5.5157   4.8907

          k = 0.1958 0.0653 0.3263 (   326 PWs)   bands (ev):

    -7.4541   7.2996

          k =-0.0653 0.5874 0.0653 (   327 PWs)   bands (ev):

    -5.1161   5.6335

          k = 0.7180-0.1958 0.8485 (   331 PWs)   bands (ev):

    -2.9613   3.5750

          k = 0.5874-0.0653 0.7180 (   334 PWs)   bands (ev):

    -1.1819   2.2878

          k = 0.4569 0.0653 0.5874 (   332 PWs)   bands (ev):

    -3.0672   2.9491

          k = 0.3263 0.1958 0.4569 (   328 PWs)   bands (ev):

    -5.1538   3.2147

          k =-0.0653-0.9790 0.0653 (   334 PWs)   bands (ev):

    -1.3710   1.7015

          k =-0.1958-0.8485-0.0653 (   329 PWs)   bands (ev):

    -1.1758   1.9837

          k =-0.3263-0.7180-0.1958 (   331 PWs)   bands (ev):

    -2.2313   1.8400

          k =-0.4569-0.5874-0.3263 (   330 PWs)   bands (ev):

    -2.9027   0.2034

          k =-0.0653-0.7180 0.0653 (   325 PWs)   bands (ev):

    -3.2792   3.7084

          k =-0.1958-0.5874-0.0653 (   327 PWs)   bands (ev):

    -4.7517   4.9351

          k =-0.0653-0.4569 0.0653 (   327 PWs)   bands (ev):

    -6.6613   7.1877

          k =-0.1958 0.1958 0.1958 (   320 PWs)   bands (ev):

    -7.8536   7.2496

          k =-0.3263 0.3263 0.0653 (   328 PWs)   bands (ev):

    -6.6678   6.0496

          k = 0.4569-0.4569 0.8485 (   333 PWs)   bands (ev):

    -4.4188   3.7831

          k = 0.3263-0.3263 0.7180 (   334 PWs)   bands (ev):

    -2.2667   0.9675

          k = 0.1958-0.1958 0.5874 (   327 PWs)   bands (ev):

    -4.4011   3.6614

          k =-0.1958 0.4569 0.1958 (   330 PWs)   bands (ev):

    -5.8952   4.6809

          k = 0.5874-0.3263 0.9790 (   329 PWs)   bands (ev):

    -4.0465   3.9171

          k = 0.4569-0.1958 0.8485 (   333 PWs)   bands (ev):

    -1.6772   2.5754

          k = 0.3263-0.0653 0.7180 (   335 PWs)   bands (ev):

    -2.3770   3.1436

          k =-0.1958-1.1096 0.1958 (   330 PWs)   bands (ev):

    -2.6814   2.8564

          k =-0.3263-0.9790 0.0653 (   331 PWs)   bands (ev):

    -0.8959   2.4952

          k =-0.4569-0.8485-0.0653 (   330 PWs)   bands (ev):

    -0.7536   2.9412

          k =-0.1958-0.8485 0.1958 (   333 PWs)   bands (ev):

    -1.0993   2.1472

          k =-0.3263 0.3263 0.3263 (   332 PWs)   bands (ev):

    -5.5333   2.9181

          k = 0.4569-0.4569 1.1096 (   332 PWs)   bands (ev):

    -4.1033   1.9907

          k = 0.3263-0.3263 0.9790 (   335 PWs)   bands (ev):

    -1.9868   2.3228

          k =-0.3263-1.2401 0.3263 (   333 PWs)   bands (ev):

    -3.2261   0.8467

          k =-0.4569-1.1096 0.1958 (   328 PWs)   bands (ev):

    -1.9635   1.3386

          k = 0.4569-0.4569-0.4569 (   332 PWs)   bands (ev):

    -3.2335  -0.1907

     highest occupied level (ev):    10.2963

!    total energy              =     -10.94755279 Ry
     Harris-Foulkes estimate   =     -10.94755279 Ry
     estimated scf accuracy    <          3.5E-10 Ry

     The total energy is the sum of the following terms:

     one-electron contribution =       2.43231269 Ry
     hartree contribution      =       0.72468428 Ry
     xc contribution           =      -3.01959891 Ry
     ewald contribution        =     -11.08495086 Ry

     convergence has been achieved in   6 iterations

     Forces acting on atoms (Ry/au):

     atom    1 type  1   force =     0.00000000    0.00000000    0.00000000

     Total force =     0.000000     Total SCF correction =     0.000000


     entering subroutine stress ...

          total   stress  (Ry/bohr**3)                   (kbar)     P=    1.72
   0.00001166  -0.00000000   0.00000000          1.72     -0.00      0.00
  -0.00000000   0.00001166  -0.00000000         -0.00      1.72     -0.00
   0.00000000  -0.00000000   0.00001166          0.00     -0.00      1.72


     number of scf cycles    =   4
     number of bfgs steps    =   3

     enthalpy old            =     -10.9474394928 Ry
     enthalpy new            =     -10.9475527937 Ry

     CASE: enthalpy_new < enthalpy_old

     new trust radius        =       0.0012127671 bohr
     new conv_thr            =       0.0000000100 Ry

     new unit-cell volume =     72.61148 a.u.^3 (    10.75991 Ang^3 )

CELL_PARAMETERS (alat=  6.04709000)
  -0.547577164  -0.000000000   0.547577164
   0.000000000   0.547577164   0.547577164
  -0.547577164   0.547577164  -0.000000000

ATOMIC_POSITIONS (crystal)
C        0.000000000   0.000000000   0.000000000



     Writing output data file pwscf.save
     NEW-OLD atomic charge density approx. for the potential
     extrapolated charge    4.00854, renormalised to    4.00000

     total cpu time spent up to now is        4.4 secs

     Self-consistent Calculation

     iteration #  1     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.00E-06,  avg # of iterations =  2.0

     Threshold (ethr) on eigenvalues was too large:
     Diagonalizing with lowered threshold

     Davidson diagonalization with overlap
     ethr =  3.34E-08,  avg # of iterations =  1.0

     total cpu time spent up to now is        4.5 secs

     total energy              =     -10.94755159 Ry
     Harris-Foulkes estimate   =     -10.95282556 Ry
     estimated scf accuracy    <       0.00000136 Ry

     iteration #  2     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  3.40E-08,  avg # of iterations =  2.8

     total cpu time spent up to now is        4.6 secs

     total energy              =     -10.94755378 Ry
     Harris-Foulkes estimate   =     -10.94755402 Ry
     estimated scf accuracy    <       0.00000068 Ry

     iteration #  3     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.70E-08,  avg # of iterations =  1.1

     total cpu time spent up to now is        4.7 secs

     total energy              =     -10.94755375 Ry
     Harris-Foulkes estimate   =     -10.94755381 Ry
     estimated scf accuracy    <       0.00000015 Ry

     iteration #  4     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  3.70E-09,  avg # of iterations =  1.1

     total cpu time spent up to now is        4.7 secs

     total energy              =     -10.94755375 Ry
     Harris-Foulkes estimate   =     -10.94755376 Ry
     estimated scf accuracy    <       0.00000001 Ry

     iteration #  5     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  2.90E-10,  avg # of iterations =  2.5

     total cpu time spent up to now is        4.8 secs

     End of self-consistent calculation

          k =-0.0652 0.0652 0.0652 (   332 PWs)   bands (ev):

    -9.0698  10.2602

          k =-0.1957 0.1957-0.0652 (   325 PWs)   bands (ev):

    -8.2610   8.4540

          k =-0.3261 0.3261-0.1957 (   333 PWs)   bands (ev):

    -6.2945   4.4439

          k = 0.4566-0.4566 0.5870 (   332 PWs)   bands (ev):

    -3.5921   0.4712

          k = 0.3261-0.3261 0.4566 (   335 PWs)   bands (ev):

    -4.4800   1.6265

          k = 0.1957-0.1957 0.3261 (   331 PWs)   bands (ev):

    -7.0692   5.8811

          k = 0.0652-0.0652 0.1957 (   329 PWs)   bands (ev):

    -8.6641   9.4786

          k =-0.0652 0.3261 0.0652 (   326 PWs)   bands (ev):

    -7.8593   8.4153

          k =-0.1957 0.4566-0.0652 (   328 PWs)   bands (ev):

    -6.2853   6.0825

          k = 0.5870-0.3261 0.7174 (   329 PWs)   bands (ev):

    -3.7554   2.2616

          k = 0.4566-0.1957 0.5870 (   330 PWs)   bands (ev):

    -2.9158   1.2111

          k = 0.3261-0.0652 0.4566 (   326 PWs)   bands (ev):

    -5.5278   4.8646

          k = 0.1957 0.0652 0.3261 (   326 PWs)   bands (ev):

    -7.4622   7.2688

          k =-0.0652 0.5870 0.0652 (   327 PWs)   bands (ev):

    -5.1289   5.6035

          k = 0.7174-0.1957 0.8479 (   331 PWs)   bands (ev):

    -2.9796   3.5502

          k = 0.5870-0.0652 0.7174 (   334 PWs)   bands (ev):

    -1.2092   2.2728

          k = 0.4566 0.0652 0.5870 (   332 PWs)   bands (ev):

    -3.0860   2.9288

          k = 0.3261 0.1957 0.4566 (   328 PWs)   bands (ev):

    -5.1669   3.1934

          k =-0.0652-0.9783 0.0652 (   334 PWs)   bands (ev):

    -1.3955   1.6841

          k =-0.1957-0.8479-0.0652 (   329 PWs)   bands (ev):

    -1.2017   1.9662

          k =-0.3261-0.7174-0.1957 (   331 PWs)   bands (ev):

    -2.2535   1.8241

          k =-0.4566-0.5870-0.3261 (   330 PWs)   bands (ev):

    -2.9246   0.1927

          k =-0.0652-0.7174 0.0652 (   325 PWs)   bands (ev):

    -3.2963   3.6830

          k =-0.1957-0.5870-0.0652 (   327 PWs)   bands (ev):

    -4.7653   4.9075

          k =-0.0652-0.4566 0.0652 (   327 PWs)   bands (ev):

    -6.6709   7.1556

          k =-0.1957 0.1957 0.1957 (   320 PWs)   bands (ev):

    -7.8609   7.2196

          k =-0.3261 0.3261 0.0652 (   328 PWs)   bands (ev):

    -6.6775   6.0212

          k = 0.4566-0.4566 0.8479 (   333 PWs)   bands (ev):

    -4.4336   3.7600

          k = 0.3261-0.3261 0.7174 (   334 PWs)   bands (ev):

    -2.2902   0.9553

          k = 0.1957-0.1957 0.5870 (   327 PWs)   bands (ev):

    -4.4157   3.6385

          k =-0.1957 0.4566 0.1957 (   330 PWs)   bands (ev):

    -5.9064   4.6560

          k = 0.5870-0.3261 0.9783 (   329 PWs)   bands (ev):

    -4.0621   3.8931

          k = 0.4566-0.1957 0.8479 (   333 PWs)   bands (ev):

    -1.7016   2.5581

          k = 0.3261-0.0652 0.7174 (   335 PWs)   bands (ev):

    -2.3977   3.1217

          k =-0.1957-1.1088 0.1957 (   330 PWs)   bands (ev):

    -2.7010   2.8353

          k =-0.3261-0.9783 0.0652 (   331 PWs)   bands (ev):

    -0.9240   2.4779

          k =-0.4566-0.8479-0.0652 (   330 PWs)   bands (ev):

    -0.7829   2.9248

          k =-0.1957-0.8479 0.1957 (   333 PWs)   bands (ev):

    -1.1264   2.1305

          k =-0.3261 0.3261 0.3261 (   332 PWs)   bands (ev):

    -5.5455   2.8975

          k = 0.4566-0.4566 1.1088 (   332 PWs)   bands (ev):

    -4.1193   1.9728

          k = 0.3261-0.3261 0.9783 (   335 PWs)   bands (ev):

    -2.0101   2.3063

          k =-0.3261-1.2392 0.3261 (   333 PWs)   bands (ev):

    -3.2456   0.8329

          k =-0.4566-1.1088 0.1957 (   328 PWs)   bands (ev):

    -1.9878   1.3257

          k = 0.4566-0.4566-0.4566 (   332 PWs)   bands (ev):

    -3.2547  -0.2007

     highest occupied level (ev):    10.2602

!    total energy              =     -10.94755375 Ry
     Harris-Foulkes estimate   =     -10.94755376 Ry
     estimated scf accuracy    <          4.5E-10 Ry

     The total energy is the sum of the following terms:

     one-electron contribution =       2.42170228 Ry
     hartree contribution      =       0.72650369 Ry
     xc contribution           =      -3.01869989 Ry
     ewald contribution        =     -11.07705984 Ry

     convergence has been achieved in   5 iterations

     Forces acting on atoms (Ry/au):

     atom    1 type  1   force =     0.00000000    0.00000000    0.00000000

     Total force =     0.000000     Total SCF correction =     0.000000


     entering subroutine stress ...

          total   stress  (Ry/bohr**3)                   (kbar)     P=    0.04
   0.00000029   0.00000000   0.00000000          0.04      0.00      0.00
   0.00000000   0.00000029   0.00000000          0.00      0.04      0.00
   0.00000000   0.00000000   0.00000029          0.00      0.00      0.04


     bfgs converged in   5 scf cycles and   4 bfgs steps
     (criteria: energy <  1.0E-04, force <  1.0E-03, cell <  5.0E-01)

     End of BFGS Geometry Optimization

     Final enthalpy =     -10.9475537549 Ry
Begin final coordinates
     new unit-cell volume =     72.61148 a.u.^3 (    10.75991 Ang^3 )

CELL_PARAMETERS (alat=  6.04709000)
  -0.547577164  -0.000000000   0.547577164
   0.000000000   0.547577164   0.547577164
  -0.547577164   0.547577164  -0.000000000

ATOMIC_POSITIONS (crystal)
C        0.000000000   0.000000000   0.000000000
End final coordinates



     A final scf calculation at the relaxed structure.
     The G-vectors are recalculated for the final unit cell
     Results may differ from those at the preceding step.

     Parallelization info
     --------------------
     sticks:   dense  smooth     PW     G-vecs:    dense   smooth      PW
     Min         148      75     27                 2458      867     181
     Max         149      76     28                 2462      876     182
     Sum         595     301    109                 9841     3479     725



     bravais-lattice index     =            2
     lattice parameter (alat)  =       6.0471  a.u.
     unit-cell volume          =      72.6115 (a.u.)^3
     number of atoms/cell      =            1
     number of atomic types    =            1
     number of electrons       =         4.00
     number of Kohn-Sham states=            2
     kinetic-energy cutoff     =      50.0000  Ry
     charge density cutoff     =     400.0000  Ry
     convergence threshold     =      1.0E-08
     mixing beta               =       0.7000
     number of iterations used =            8  plain     mixing
     Exchange-correlation      =  SLA  PW   PBE  PBE ( 1  4  3  4 0 0)

     celldm(1)=   6.047090  celldm(2)=   0.000000  celldm(3)=   0.000000
     celldm(4)=   0.000000  celldm(5)=   0.000000  celldm(6)=   0.000000

     crystal axes: (cart. coord. in units of alat)
               a(1) = (  -0.547577  -0.000000   0.547577 )  
               a(2) = (   0.000000   0.547577   0.547577 )  
               a(3) = (  -0.547577   0.547577  -0.000000 )  

     reciprocal axes: (cart. coord. in units 2 pi/alat)
               b(1) = ( -0.913113 -0.913113  0.913113 )  
               b(2) = (  0.913113  0.913113  0.913113 )  
               b(3) = ( -0.913113  0.913113 -0.913113 )  


     PseudoPot. # 1 for C  read from file:
     ../C.pbe-rrkjus.UPF
     MD5 check sum: 00fb224312de0c5b6853bd333518df6f
     Pseudo is Ultrasoft, Zval =  4.0
     Generated by new atomic code, or converted to UPF format
     Using radial grid of  627 points,  4 beta functions with: 
                l(1) =   0
                l(2) =   0
                l(3) =   1
                l(4) =   1
     Q(r) pseudized with 0 coefficients 


     atomic species   valence    mass     pseudopotential
        C              4.00    12.01060     C ( 1.00)

     48 Sym. Ops., with inversion, found



   Cartesian axes

     site n.     atom                  positions (alat units)
         1           C   tau(   1) = (   0.0000000   0.0000000   0.0000000  )

     number of k points=    44
                       cart. coord. in units 2pi/alat
        k(    1) = (  -0.0652224   0.0652224   0.0652224), wk =   0.0116618
        k(    2) = (  -0.1956671   0.1956671  -0.0652224), wk =   0.0349854
        k(    3) = (  -0.3261119   0.3261119  -0.1956671), wk =   0.0349854
        k(    4) = (   0.4565567  -0.4565567   0.5870014), wk =   0.0349854
        k(    5) = (   0.3261119  -0.3261119   0.4565567), wk =   0.0349854
        k(    6) = (   0.1956671  -0.1956671   0.3261119), wk =   0.0349854
        k(    7) = (   0.0652224  -0.0652224   0.1956671), wk =   0.0349854
        k(    8) = (  -0.0652224   0.3261119   0.0652224), wk =   0.0349854
        k(    9) = (  -0.1956671   0.4565567  -0.0652224), wk =   0.0699708
        k(   10) = (   0.5870014  -0.3261119   0.7174462), wk =   0.0699708
        k(   11) = (   0.4565567  -0.1956671   0.5870014), wk =   0.0699708
        k(   12) = (   0.3261119  -0.0652224   0.4565567), wk =   0.0699708
        k(   13) = (   0.1956671   0.0652224   0.3261119), wk =   0.0699708
        k(   14) = (  -0.0652224   0.5870014   0.0652224), wk =   0.0349854
        k(   15) = (   0.7174462  -0.1956671   0.8478909), wk =   0.0699708
        k(   16) = (   0.5870014  -0.0652224   0.7174462), wk =   0.0699708
        k(   17) = (   0.4565567   0.0652224   0.5870014), wk =   0.0699708
        k(   18) = (   0.3261119   0.1956671   0.4565567), wk =   0.0699708
        k(   19) = (  -0.0652224  -0.9783357   0.0652224), wk =   0.0349854
        k(   20) = (  -0.1956671  -0.8478909  -0.0652224), wk =   0.0699708
        k(   21) = (  -0.3261119  -0.7174462  -0.1956671), wk =   0.0699708
        k(   22) = (  -0.4565567  -0.5870014  -0.3261119), wk =   0.0349854
        k(   23) = (  -0.0652224  -0.7174462   0.0652224), wk =   0.0349854
        k(   24) = (  -0.1956671  -0.5870014  -0.0652224), wk =   0.0699708
        k(   25) = (  -0.0652224  -0.4565567   0.0652224), wk =   0.0349854
        k(   26) = (  -0.1956671   0.1956671   0.1956671), wk =   0.0116618
        k(   27) = (  -0.3261119   0.3261119   0.0652224), wk =   0.0349854
        k(   28) = (   0.4565567  -0.4565567   0.8478909), wk =   0.0349854
        k(   29) = (   0.3261119  -0.3261119   0.7174462), wk =   0.0349854
        k(   30) = (   0.1956671  -0.1956671   0.5870014), wk =   0.0349854
        k(   31) = (  -0.1956671   0.4565567   0.1956671), wk =   0.0349854
        k(   32) = (   0.5870014  -0.3261119   0.9783357), wk =   0.0699708
        k(   33) = (   0.4565567  -0.1956671   0.8478909), wk =   0.0699708
        k(   34) = (   0.3261119  -0.0652224   0.7174462), wk =   0.0699708
        k(   35) = (  -0.1956671  -1.1087805   0.1956671), wk =   0.0349854
        k(   36) = (  -0.3261119  -0.9783357   0.0652224), wk =   0.0699708
        k(   37) = (  -0.4565567  -0.8478909  -0.0652224), wk =   0.0349854
        k(   38) = (  -0.1956671  -0.8478909   0.1956671), wk =   0.0349854
        k(   39) = (  -0.3261119   0.3261119   0.3261119), wk =   0.0116618
        k(   40) = (   0.4565567  -0.4565567   1.1087805), wk =   0.0349854
        k(   41) = (   0.3261119  -0.3261119   0.9783357), wk =   0.0349854
        k(   42) = (  -0.3261119  -1.2392252   0.3261119), wk =   0.0349854
        k(   43) = (  -0.4565567  -1.1087805   0.1956671), wk =   0.0349854
        k(   44) = (   0.4565567  -0.4565567  -0.4565567), wk =   0.0058309

     Dense  grid:     9841 G-vectors     FFT dimensions: (  30,  30,  30)

     Smooth grid:     3479 G-vectors     FFT dimensions: (  24,  24,  24)

     Largest allocated arrays     est. size (Mb)     dimensions
        Kohn-Sham Wavefunctions         0.00 Mb     (     114,    2)
        NL pseudopotentials             0.01 Mb     (     114,    8)
        Each V/rho on FFT grid          0.11 Mb     (    7200)
        Each G-vector array             0.02 Mb     (    2462)
        G-vector shells                 0.00 Mb     (     151)
     Largest temporary arrays     est. size (Mb)     dimensions
        Auxiliary wavefunctions         0.01 Mb     (     114,    8)
        Each subspace H/S matrix        0.00 Mb     (       8,    8)
        Each <psi_i|beta_j> matrix      0.00 Mb     (       8,    2)
        Arrays for rho mixing           0.88 Mb     (    7200,    8)

     Initial potential from superposition of free atoms

     starting charge    3.99995, renormalised to    4.00000
     Starting wfc are    4 randomized atomic wfcs

     Writing output data file pwscf.save

     total cpu time spent up to now is        5.4 secs

     Self-consistent Calculation

     iteration #  1     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.00E-06,  avg # of iterations =  5.8

     total cpu time spent up to now is        5.6 secs

     total energy              =     -10.94765415 Ry
     Harris-Foulkes estimate   =     -10.94773613 Ry
     estimated scf accuracy    <       0.00023894 Ry

     iteration #  2     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  5.97E-06,  avg # of iterations =  1.1

     total cpu time spent up to now is        5.7 secs

     total energy              =     -10.94767576 Ry
     Harris-Foulkes estimate   =     -10.94767323 Ry
     estimated scf accuracy    <       0.00000452 Ry

     iteration #  3     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  1.13E-07,  avg # of iterations =  2.9

     total cpu time spent up to now is        5.8 secs

     total energy              =     -10.94767778 Ry
     Harris-Foulkes estimate   =     -10.94767759 Ry
     estimated scf accuracy    <       0.00000028 Ry

     iteration #  4     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  6.96E-09,  avg # of iterations =  2.5

     total cpu time spent up to now is        5.9 secs

     total energy              =     -10.94767786 Ry
     Harris-Foulkes estimate   =     -10.94767787 Ry
     estimated scf accuracy    <       0.00000002 Ry

     iteration #  5     ecut=    50.00 Ry     beta=0.70
     Davidson diagonalization with overlap
     ethr =  5.85E-10,  avg # of iterations =  2.2

     total cpu time spent up to now is        6.0 secs

     End of self-consistent calculation

          k =-0.0652 0.0652 0.0652 (   429 PWs)   bands (ev):

    -9.0700  10.2595

          k =-0.1957 0.1957-0.0652 (   441 PWs)   bands (ev):

    -8.2612   8.4531

          k =-0.3261 0.3261-0.1957 (   431 PWs)   bands (ev):

    -6.2947   4.4433

          k = 0.4566-0.4566 0.5870 (   433 PWs)   bands (ev):

    -3.5924   0.4708

          k = 0.3261-0.3261 0.4566 (   430 PWs)   bands (ev):

    -4.4802   1.6261

          k = 0.1957-0.1957 0.3261 (   434 PWs)   bands (ev):

    -7.0694   5.8804

          k = 0.0652-0.0652 0.1957 (   437 PWs)   bands (ev):

    -8.6643   9.4778

          k =-0.0652 0.3261 0.0652 (   433 PWs)   bands (ev):

    -7.8595   8.4144

          k =-0.1957 0.4566-0.0652 (   437 PWs)   bands (ev):

    -6.2855   6.0818

          k = 0.5870-0.3261 0.7174 (   435 PWs)   bands (ev):

    -3.7557   2.2611

          k = 0.4566-0.1957 0.5870 (   432 PWs)   bands (ev):

    -2.9161   1.2106

          k = 0.3261-0.0652 0.4566 (   432 PWs)   bands (ev):

    -5.5280   4.8640

          k = 0.1957 0.0652 0.3261 (   434 PWs)   bands (ev):

    -7.4624   7.2680

          k =-0.0652 0.5870 0.0652 (   437 PWs)   bands (ev):

    -5.1291   5.6028

          k = 0.7174-0.1957 0.8479 (   435 PWs)   bands (ev):

    -2.9799   3.5496

          k = 0.5870-0.0652 0.7174 (   429 PWs)   bands (ev):

    -1.2096   2.2723

          k = 0.4566 0.0652 0.5870 (   428 PWs)   bands (ev):

    -3.0863   2.9283

          k = 0.3261 0.1957 0.4566 (   433 PWs)   bands (ev):

    -5.1671   3.1927

          k =-0.0652-0.9783 0.0652 (   444 PWs)   bands (ev):

    -1.3959   1.6836

          k =-0.1957-0.8479-0.0652 (   438 PWs)   bands (ev):

    -1.2021   1.9657

          k =-0.3261-0.7174-0.1957 (   431 PWs)   bands (ev):

    -2.2538   1.8236

          k =-0.4566-0.5870-0.3261 (   434 PWs)   bands (ev):

    -2.9249   0.1923

          k =-0.0652-0.7174 0.0652 (   438 PWs)   bands (ev):

    -3.2966   3.6824

          k =-0.1957-0.5870-0.0652 (   431 PWs)   bands (ev):

    -4.7656   4.9068

          k =-0.0652-0.4566 0.0652 (   438 PWs)   bands (ev):

    -6.6711   7.1548

          k =-0.1957 0.1957 0.1957 (   435 PWs)   bands (ev):

    -7.8611   7.2187

          k =-0.3261 0.3261 0.0652 (   435 PWs)   bands (ev):

    -6.6777   6.0205

          k = 0.4566-0.4566 0.8479 (   429 PWs)   bands (ev):

    -4.4338   3.7594

          k = 0.3261-0.3261 0.7174 (   438 PWs)   bands (ev):

    -2.2906   0.9548

          k = 0.1957-0.1957 0.5870 (   435 PWs)   bands (ev):

    -4.4160   3.6379

          k =-0.1957 0.4566 0.1957 (   434 PWs)   bands (ev):

    -5.9066   4.6553

          k = 0.5870-0.3261 0.9783 (   431 PWs)   bands (ev):

    -4.0623   3.8924

          k = 0.4566-0.1957 0.8479 (   430 PWs)   bands (ev):

    -1.7019   2.5576

          k = 0.3261-0.0652 0.7174 (   432 PWs)   bands (ev):

    -2.3980   3.1212

          k =-0.1957-1.1088 0.1957 (   433 PWs)   bands (ev):

    -2.7012   2.8347

          k =-0.3261-0.9783 0.0652 (   432 PWs)   bands (ev):

    -0.9244   2.4773

          k =-0.4566-0.8479-0.0652 (   432 PWs)   bands (ev):

    -0.7833   2.9242

          k =-0.1957-0.8479 0.1957 (   433 PWs)   bands (ev):

    -1.1267   2.1300

          k =-0.3261 0.3261 0.3261 (   425 PWs)   bands (ev):

    -5.5457   2.8970

          k = 0.4566-0.4566 1.1088 (   435 PWs)   bands (ev):

    -4.1196   1.9723

          k = 0.3261-0.3261 0.9783 (   437 PWs)   bands (ev):

    -2.0105   2.3058

          k =-0.3261-1.2392 0.3261 (   436 PWs)   bands (ev):

    -3.2459   0.8324

          k =-0.4566-1.1088 0.1957 (   432 PWs)   bands (ev):

    -1.9882   1.3252

          k = 0.4566-0.4566-0.4566 (   434 PWs)   bands (ev):

    -3.2550  -0.2011

     highest occupied level (ev):    10.2595

!    total energy              =     -10.94767787 Ry
     Harris-Foulkes estimate   =     -10.94767787 Ry
     estimated scf accuracy    <          2.6E-11 Ry

     The total energy is the sum of the following terms:

     one-electron contribution =       2.42171337 Ry
     hartree contribution      =       0.72655290 Ry
     xc contribution           =      -3.01888431 Ry
     ewald contribution        =     -11.07705984 Ry

     convergence has been achieved in   5 iterations

     Forces acting on atoms (Ry/au):

     atom    1 type  1   force =     0.00000000    0.00000000    0.00000000

     Total force =     0.000000     Total SCF correction =     0.000000


     entering subroutine stress ...

          total   stress  (Ry/bohr**3)                   (kbar)     P=    0.75
   0.00000508  -0.00000000   0.00000000          0.75     -0.00      0.00
  -0.00000000   0.00000508  -0.00000000         -0.00      0.75     -0.00
   0.00000000  -0.00000000   0.00000508          0.00     -0.00      0.75


     Writing output data file pwscf.save

     init_run     :      0.39s CPU      0.40s WALL (       2 calls)
     electrons    :      2.22s CPU      2.85s WALL (       6 calls)
     update_pot   :      0.53s CPU      0.54s WALL (       4 calls)
     forces       :      0.25s CPU      0.26s WALL (       6 calls)
     stress       :      0.69s CPU      1.09s WALL (       6 calls)

     Called by init_run:
     wfcinit      :      0.08s CPU      0.08s WALL (       2 calls)
     potinit      :      0.06s CPU      0.06s WALL (       2 calls)

     Called by electrons:
     c_bands      :      1.52s CPU      2.12s WALL (      33 calls)
     sum_band     :      0.36s CPU      0.38s WALL (      33 calls)
     v_of_rho     :      0.25s CPU      0.24s WALL (      37 calls)
     newd         :      0.08s CPU      0.08s WALL (      37 calls)
     mix_rho      :      0.05s CPU      0.02s WALL (      33 calls)

     Called by c_bands:
     init_us_2    :      0.11s CPU      0.10s WALL (    3520 calls)
     cegterg      :      1.45s CPU      1.90s WALL (    1452 calls)

     Called by sum_band:
     sum_band:bec :      0.00s CPU      0.00s WALL (    1452 calls)
     addusdens    :      0.03s CPU      0.09s WALL (      33 calls)

     Called by *egterg:
     h_psi        :      1.22s CPU      1.22s WALL (    5003 calls)
     s_psi        :      0.00s CPU      0.01s WALL (    5003 calls)
     g_psi        :      0.03s CPU      0.01s WALL (    3463 calls)
     cdiaghg      :      0.19s CPU      0.61s WALL (    4651 calls)

     Called by h_psi:
     add_vuspsi   :      0.02s CPU      0.02s WALL (    5003 calls)

     General routines
     calbec       :      0.12s CPU      0.11s WALL (    7775 calls)
     fft          :      0.12s CPU      0.18s WALL (     628 calls)
     ffts         :      0.02s CPU      0.01s WALL (      70 calls)
     fftw         :      1.22s CPU      1.19s WALL (   21378 calls)
     interpolate  :      0.05s CPU      0.02s WALL (      70 calls)
     davcio       :      0.00s CPU      0.00s WALL (      88 calls)

     Parallel routines
     fft_scatter  :      0.53s CPU      0.56s WALL (   22076 calls)

     PWSCF        :     4.67s CPU         6.32s WALL


   This run was terminated on:  15:34:43  26Feb2016            

=------------------------------------------------------------------------------=
   JOB DONE.
=------------------------------------------------------------------------------=
-------------- next part --------------
&control
   pseudo_dir='../'
	calculation='vc-relax'
	tstress=.true.
/
&system
    ibrav=  1, celldm(1) = 6.04709, nat=  4, ntyp= 1,
    ecutwfc = 50,
    ecutrho = 400,
/
&electrons
/
&ions
/
&cell
/
ATOMIC_SPECIES
 C  12.0106  C.pbe-rrkjus.UPF
ATOMIC_POSITIONS crystal
 C 0 0 0
 C 0.5 0.5 0
 C 0 0.5 0.5
 C 0.5 0 0.5
K_POINTS automatic
 7 7 7 1 1 1
-------------- next part --------------
&control
   pseudo_dir='../'
	calculation='vc-relax'
	tstress=.true.
/
&system
    ibrav=  2, celldm(1) = 6.04709, nat=  1, ntyp= 1,
    ecutwfc = 50,
    ecutrho = 400,
/
&electrons
/
&ions
/
&cell
/
ATOMIC_SPECIES
 C  12.0106  C.pbe-rrkjus.UPF
ATOMIC_POSITIONS crystal
 C 0 0 0
K_POINTS automatic
 7 7 7 1 1 1


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