[QE-users] Convergence issue

Mayuri Bora mayu219 at tezu.ernet.in
Tue Mar 30 12:55:37 CEST 2021


Dear QE users,

I am experiencing an issue while incorporating SOC in the system. I have
tried with relax, using different pseudopotentials (PAW, USPP, ONCV),
varying convergence threshold, increasing electron maxstep, varying
K-points etc in the input file. But still the convergence is not achieved
even after increasing the electron maxstep. I will be thankful for the
help.
The input file is as follows:
&CONTROL
  calculation='scf',
  outdir='/home/pritamd_tezu/mayuri/uspp',
  prefix='bilayer',
  pseudo_dir='/home/pritamd_tezu/mayuri/uspp',
  etot_conv_thr= 2.20000000000d-08,
  forc_conv_thr= 1.0000000000d-04,
  verbosity='high',
  tstress=.true.,
  tprnfor=.true.,
/
&SYSTEM
  ibrav=0,
  nat=22,
  ntyp=3,
  ecutwfc=80.0d0,
  ecutrho=900.0d0,
  input_dft='PBE',
  vdw_corr='DFT-D',
  lspinorb= .true.,
  noncolin= .true.,
  starting_magnetization(1)= 0.1,
  starting_magnetization(2)= 0.1,
  starting_magnetization(3)= 0.35714285714,
  ts_vdw_econv_thr= 1.0000000000d-06,
  occupations='smearing',
  smearing='gaussian',
  degauss=0.0073498618000d0,
/
&ELECTRONS
  diagonalization= 'david',
  diago_thr_init=1.00000000d-09,
  conv_thr=4.40000000d-12,
  electron_maxstep=900,
  mixing_beta=0.700d0,
/
ATOMIC_SPECIES
  Br 79.904000d0 Br.rel-pbe-n-rrkjus_psl.1.0.0.UPF
  C  13.010700d0 C.rel-pbe-n-rrkjus_psl.1.0.0.UPF
  Cr 51.996100d0 Cr.rel-pbe-spn-rrkjus_psl.1.0.0.UPF

ATOMIC_POSITIONS {crystal}
C            0.2370338590       0.0466579790       0.5819172260
C            0.4750810860       0.0942675400       0.5821171400
C            0.9512726660       0.1895037740       0.5817571880
C            0.1894166470       0.2371217310       0.5817013980
C            0.6656258110       0.3323957920       0.5821242930
C            0.9036366340       0.3800025580       0.5819604400
C            0.3798963730       0.4752872590       0.5818429590
C            0.6179666520       0.5228227970       0.5820887090
C            0.0941461250       0.6180914640       0.5820779200
C            0.3322389720       0.6657285090       0.5819960240
C            0.8084381220       0.7609310750       0.5821903940
C            0.0464906100       0.8085246090       0.5820961590
C            0.5227361320       0.9037968520       0.5820508600
C            0.7607774140       0.9513681530       0.5819959040
Br           0.5214065310       0.1659515950       0.5063270930
Br           0.1714701210       0.5149154070       0.5061650870
Br           0.8211319450       0.8163818720       0.5062854290
Br           0.8191159960       0.1666669990       0.4423690140
Br           0.5236960050       0.5189570190       0.4423690140
Br           0.1714060010       0.8143770100       0.4423690140
Cr           0.8380730150       0.5000000000       0.4741629960
Cr           0.5047389860       0.8333340290       0.4741629960

K_POINTS {automatic}
3 3 1 0 0 0
CELL_PARAMETERS {angstrom}
      6.3488101959       0.0000000000       0.0000000000
     -3.1744050980       5.4982309135       0.0000000000
      0.0000000000       0.0000000000      45.2111015320

The output is-
iteration #897     ecut=    80.00 Ry     beta= 0.70
     Davidson diagonalization with overlap
     c_bands:  2 eigenvalues not converged
     c_bands:  2 eigenvalues not converged
     c_bands:  2 eigenvalues not converged
     c_bands:  1 eigenvalues not converged
     c_bands:  1 eigenvalues not converged
     c_bands:  2 eigenvalues not converged
     ethr =  4.97E-09,  avg # of iterations = 17.9

     negative rho (up, down):  4.580E-01 6.033E-01

     total cpu time spent up to now is    29196.4 secs

     total energy              =    -703.53181584 Ry
     Harris-Foulkes estimate   =    -703.14239084 Ry
     estimated scf accuracy    <       4.25990051 Ry

     total magnetization       =     0.44     0.63     0.59 Bohr mag/cell
     absolute magnetization    =   244.14 Bohr mag/cell

     iteration #898     ecut=    80.00 Ry     beta= 0.70
     Davidson diagonalization with overlap
     ethr =  4.97E-09,  avg # of iterations = 14.0

     negative rho (up, down):  5.032E-01 5.390E-01

     total cpu time spent up to now is    29240.1 secs

     total energy              =    -703.06735008 Ry
     Harris-Foulkes estimate   =    -703.82964135 Ry
     estimated scf accuracy    <       6.87305235 Ry

     total magnetization       =     0.47     0.58     0.74 Bohr mag/cell
     absolute magnetization    =   243.34 Bohr mag/cell

     iteration #899     ecut=    80.00 Ry     beta= 0.70
     Davidson diagonalization with overlap
     ethr =  4.97E-09,  avg # of iterations = 10.9

     negative rho (up, down):  4.948E-01 6.983E-01

     total cpu time spent up to now is    29280.7 secs

     total energy              =    -702.85218585 Ry
     Harris-Foulkes estimate   =    -703.21192343 Ry
     estimated scf accuracy    <       4.49406597 Ry

     total magnetization       =     0.29     0.73     0.98 Bohr mag/cell
     absolute magnetization    =   243.35 Bohr mag/cell

     iteration #900     ecut=    80.00 Ry     beta= 0.70
     Davidson diagonalization with overlap
     ethr =  4.97E-09,  avg # of iterations = 13.0

     negative rho (up, down):  4.966E-01 6.991E-01

 ==============================================================================
     atom number    1 relative position :    0.2137   0.0404   4.1439
     charge :     1.583212
     magnetization :          0.380474   -0.330546    0.000008
     magnetization/charge:    0.240318   -0.208782    0.000005
     polar coord.: r, theta, phi [deg] :     0.504005   89.999081  -40.983295

 ==============================================================================

 ==============================================================================
     atom number    2 relative position :    0.4279   0.0816   4.1454
     charge :     1.577517
     magnetization :         -0.389383    0.336906   -0.000035
     magnetization/charge:   -0.246833    0.213567   -0.000022
     polar coord.: r, theta, phi [deg] :     0.514903   90.003884  139.132634

 ==============================================================================

 ==============================================================================
     atom number    3 relative position :    0.8565   0.1641   4.1428
     charge :     1.596370
     magnetization :          0.435917   -0.375033    0.000026
     magnetization/charge:    0.273067   -0.234929    0.000017
     polar coord.: r, theta, phi [deg] :     0.575042   89.997370  -40.706487

 ==============================================================================

 ==============================================================================
     atom number    4 relative position :    0.0709   0.2054   4.1424
     charge :     1.602837
     magnetization :         -0.430879    0.371588    0.000016
     magnetization/charge:   -0.268823    0.231831    0.000010
     polar coord.: r, theta, phi [deg] :     0.568977   89.998380  139.225699

 ==============================================================================

 ==============================================================================
     atom number    5 relative position :    0.4994   0.2879   4.1454
     charge :     1.593362
     magnetization :          0.374506   -0.322135   -0.000032
     magnetization/charge:    0.235041   -0.202173   -0.000020
     polar coord.: r, theta, phi [deg] :     0.493989   90.003692  -40.700789

 ==============================================================================

 ==============================================================================
     atom number    6 relative position :    0.7136   0.3291   4.1443
     charge :     1.579191
     magnetization :         -0.415969    0.359117    0.000056
     magnetization/charge:   -0.263407    0.227406    0.000035
     polar coord.: r, theta, phi [deg] :     0.549541   89.994211  139.195126

 ==============================================================================

 ==============================================================================
     atom number    7 relative position :    0.1423   0.4116   4.1434
     charge :     1.600834
     magnetization :          0.439717   -0.379101    0.000015
     magnetization/charge:    0.274680   -0.236815    0.000009
     polar coord.: r, theta, phi [deg] :     0.580576   89.998542  -40.766197

 ==============================================================================

 ==============================================================================
     atom number    8 relative position :    0.3566   0.4528   4.1452
     charge :     1.597066
     magnetization :         -0.433970    0.372182    0.000008
     magnetization/charge:   -0.271730    0.233041    0.000005
     polar coord.: r, theta, phi [deg] :     0.571708   89.999222  139.382911

 ==============================================================================

 ==============================================================================
     atom number    9 relative position :   -0.2149   0.5353   4.1451
     charge :     1.573944
     magnetization :          0.365896   -0.317568    0.000026
     magnetization/charge:    0.232471   -0.201766    0.000016
     polar coord.: r, theta, phi [deg] :     0.484489   89.996948  -40.955313

 ==============================================================================

 ==============================================================================
     atom number   10 relative position :   -0.0006   0.5765   4.1445
     charge :     1.594014
     magnetization :         -0.411189    0.359096    0.000027
     magnetization/charge:   -0.257958    0.225278    0.000017
     polar coord.: r, theta, phi [deg] :     0.545918   89.997174  138.868895

 ==============================================================================

 ==============================================================================
     atom number   11 relative position :    0.4280   0.6590   4.1459
     charge :     1.594530
     magnetization :          0.382277   -0.326463    0.000052
     magnetization/charge:    0.239743   -0.204739    0.000033
     polar coord.: r, theta, phi [deg] :     0.502706   89.994029  -40.497199

 ==============================================================================

 ==============================================================================
     atom number   12 relative position :   -0.3578   0.7002   4.1452
     charge :     1.562317
     magnetization :         -0.287402    0.249654    0.000015
     magnetization/charge:   -0.183959    0.159797    0.000009
     polar coord.: r, theta, phi [deg] :     0.380693   89.997813  139.020625

 ==============================================================================

 ==============================================================================
     atom number   13 relative position :    0.0708   0.7827   4.1449
     charge :     1.590715
     magnetization :          0.425583   -0.372131    0.000010
     magnetization/charge:    0.267542   -0.233939    0.000006
     polar coord.: r, theta, phi [deg] :     0.565334   89.998979  -41.166523

 ==============================================================================

 ==============================================================================
     atom number   14 relative position :    0.2851   0.8239   4.1445
     charge :     1.601804
     magnetization :         -0.428110    0.366318    0.000029
     magnetization/charge:   -0.267267    0.228691    0.000018
     polar coord.: r, theta, phi [deg] :     0.563442   89.997064  139.447592

 ==============================================================================

 ==============================================================================
     atom number   15 relative position :    0.4384   0.1437   3.6057
     charge :     4.798411
     magnetization :          0.007679    0.002772    0.014028
     magnetization/charge:    0.001600    0.000578    0.002923
     polar coord.: r, theta, phi [deg] :     0.016231   30.198569   19.846228

 ==============================================================================

 ==============================================================================
     atom number   16 relative position :   -0.0860   0.4459   3.6045
     charge :     4.671290
     magnetization :         -0.000674    0.005405    0.005586
     magnetization/charge:   -0.000144    0.001157    0.001196
     polar coord.: r, theta, phi [deg] :     0.007802   44.277120   97.102813

 ==============================================================================

 ==============================================================================
     atom number   17 relative position :    0.4129   0.7070   3.6054
     charge :     4.705807
     magnetization :         -0.002377   -0.005184    0.001882
     magnetization/charge:   -0.000505   -0.001102    0.000400
     polar coord.: r, theta, phi [deg] :     0.006006   71.733783 -114.634627

 ==============================================================================

 ==============================================================================
     atom number   18 relative position :    0.7358   0.1443   3.1502
     charge :     4.740166
     magnetization :          0.013786   -0.006651    0.002346
     magnetization/charge:    0.002908   -0.001403    0.000495
     polar coord.: r, theta, phi [deg] :     0.015485   81.286511  -25.753276

 ==============================================================================

 ==============================================================================
     atom number   19 relative position :    0.2642   0.4494   3.1502
     charge :     4.763875
     magnetization :         -0.005651    0.002010    0.008009
     magnetization/charge:   -0.001186    0.000422    0.001681
     polar coord.: r, theta, phi [deg] :     0.010006   36.826503  160.419700

 ==============================================================================

 ==============================================================================
     atom number   20 relative position :   -0.2358   0.7053   3.1502
     charge :     4.789928
     magnetization :         -0.000522   -0.014808    0.000959
     magnetization/charge:   -0.000109   -0.003092    0.000200
     polar coord.: r, theta, phi [deg] :     0.014849   86.295844  -92.019948

 ==============================================================================

 ==============================================================================
     atom number   21 relative position :    0.5881   0.4330   3.3766
     charge :    11.708450
     magnetization :          0.155574    0.153194    0.003688
     magnetization/charge:    0.013287    0.013084    0.000315
     polar coord.: r, theta, phi [deg] :     0.218370   89.032193   44.558408

 ==============================================================================

 ==============================================================================
     atom number   22 relative position :    0.0881   0.7217   3.3766
     charge :    11.712467
     magnetization :          0.155060   -0.023629    0.078668
     magnetization/charge:    0.013239   -0.002017    0.006717
     polar coord.: r, theta, phi [deg] :     0.175473   63.364172   -8.664322

 ==============================================================================

     total cpu time spent up to now is    29323.8 secs

     total energy              =    -702.63826774 Ry
     Harris-Foulkes estimate   =    -703.07215029 Ry
     estimated scf accuracy    <       5.16706349 Ry

     total magnetization       =     0.31     0.28     0.46 Bohr mag/cell
     absolute magnetization    =   244.03 Bohr mag/cell

     End of self-consistent calculation

     convergence NOT achieved after 900 iterations: stopping

     Writing output data file bilayer.save/

     init_run     :     18.98s CPU     21.82s WALL (       1 calls)
     electrons    :  28733.81s CPU  29301.13s WALL (       1 calls)

     Called by init_run:
     wfcinit      :      5.25s CPU      5.56s WALL (       1 calls)
     wfcinit:atom :      0.01s CPU      0.01s WALL (       9 calls)
     wfcinit:wfcr :      5.20s CPU      5.49s WALL (       9 calls)
     potinit      :      0.26s CPU      0.31s WALL (       1 calls)
     hinit0       :     10.79s CPU     12.80s WALL (       1 calls)

     Called by electrons:
     c_bands      :  25841.80s CPU  26291.21s WALL (     900 calls)
     sum_band     :   2381.50s CPU   2461.08s WALL (     900 calls)
     v_of_rho     :    109.54s CPU    111.08s WALL (     901 calls)
     v_h          :      5.28s CPU      5.32s WALL (     901 calls)
     v_xc         :    104.25s CPU    105.72s WALL (     901 calls)
     newd         :    312.60s CPU    346.25s WALL (     901 calls)
     mix_rho      :     47.89s CPU     48.36s WALL (     900 calls)

     Called by c_bands:
     init_us_2    :     10.93s CPU     11.09s WALL (   16209 calls)
     cegterg      :  25730.93s CPU  26176.74s WALL (    8327 calls)

     Called by sum_band:
     sum_band:bec :     45.18s CPU     45.25s WALL (    8100 calls)
     addusdens    :    561.85s CPU    603.77s WALL (     900 calls)

     Called by *egterg:
     h_psi        :  17402.37s CPU  17774.06s WALL (   77791 calls)
     s_psi        :    381.00s CPU    381.73s WALL (   77791 calls)
     g_psi        :     12.44s CPU     12.58s WALL (   69455 calls)
     cdiaghg      :   5952.93s CPU   5974.65s WALL (   77782 calls)
     cegterg:over :   1023.20s CPU   1057.99s WALL (   69455 calls)
     cegterg:upda :    310.97s CPU    312.03s WALL (   69455 calls)
     cegterg:last :    203.42s CPU    203.79s WALL (   15316 calls)

     Called by h_psi:
     h_psi:pot    :  17382.90s CPU  17754.17s WALL (   77791 calls)
     h_psi:calbec :    435.55s CPU    456.64s WALL (   77791 calls)
     vloc_psi     :  16536.64s CPU  16885.36s WALL (   77791 calls)
     add_vuspsi   :    409.88s CPU    411.56s WALL (   77791 calls)

     General routines
     calbec       :    513.27s CPU    538.25s WALL (   85891 calls)
     fft          :    223.55s CPU    227.61s WALL (   33331 calls)
     ffts         :     30.84s CPU     31.13s WALL (    7204 calls)
     fftw         :  17222.16s CPU  17587.67s WALL (29326740 calls)
     interpolate  :     34.89s CPU     35.17s WALL (    3604 calls)
     davcio       :      0.00s CPU      0.06s WALL (      27 calls)

     Parallel routines
     fft_scatt_xy :    796.67s CPU    809.02s WALL (29367275 calls)
     fft_scatt_yz :  15169.63s CPU  15503.53s WALL (29367275 calls)

     PWSCF        :      7h59m CPU      8h 8m WALL


   This run was terminated on:   7:37:34  25Mar2021

=------------------------------------------------------------------------------=
   JOB DONE.
=------------------------------------------------------------------------------=

regards
Mayuri

Mayuri Bora
INSPIRE Fellow
Advanced Functional Material Laboratory
Tezpur University
Napaam
http://www.tezu.ernet.in/afml/


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