[Pw_forum] BUG in NEB calculations with tefield=true

Maxim Skripnik maxim.skripnik at uni-konstanz.de
Tue Nov 7 16:20:55 CET 2017


The smallest example I have here is a molecule with 58 atoms. It takes 7 
hours on 16 cores and produces the described behavior. But one doesn't 
have to wait until NEB has converged. You can see the NaN and ***** in 
the .path file already after the first NEB step, which takes ~15 minutes 
on 16 cores.

See attachment for the input file.
-------------- next part --------------
BEGIN
BEGIN_PATH_INPUT
&PATH
  restart_mode      = 'restart'
  string_method     = 'neb'
  nstep_path        = 200
  ds                = 1.5
  opt_scheme        = "broyden"
  num_of_images     = 7
  k_max             = 0.3
  k_min             = 0.1
  CI_scheme         = "auto"
  path_thr          = 0.02
/
END_PATH_INPUT
BEGIN_ENGINE_INPUT
&CONTROL
    prefix         = "neb"
    pseudo_dir = './pp'
    outdir='./tmp'
    etot_conv_thr = 1.0D-5
    forc_conv_thr =  1.0D-5
    tefield = .true.
    dipfield = .true.
/
&SYSTEM
    ibrav = 0, celldm(1) = 1.89035917
    nat = 58, ntyp = 3
    nosym = .true.
    ecutwfc = 40.0, ecutrho = 400.0
    occupations = 'smearing', smearing = 'gaussian', degauss = 0.01
    vdw_corr = 'dft-d'
    edir = 3, emaxpos = 0.9, eopreg = 0.2
    eamp = 0.000972345271436
/
&ELECTRONS
  conv_thr    = 1.D-10
/
&IONS
/
ATOMIC_SPECIES
H  1.00     H.pbe-rrkjus.UPF
C  12.00    C.pbe-rrkjus.UPF
N  14.00    N.pbe-rrkjus.UPF
BEGIN_POSITIONS
FIRST_IMAGE
ATOMIC_POSITIONS { angstrom }
H        4.355073897   9.689542957   9.159666061    1   1   0
H        5.750963124   8.230215131   9.158660831    1   1   0
N        3.649711354   7.612348525   9.155830247    1   1   0
N        6.456171011  10.307162495   9.162442028    1   1   0
N        6.457895402   7.494576002   9.156691631    1   1   0
N        3.648008884  10.425019804   9.161706008    1   1   0
C        6.282711105  11.663495792   9.166605914    1   1   0
C        3.823110964   6.256020817   9.154555506    1   1   0
C        6.162153268   6.149298326   9.152367432    1   1   0
C        3.943584353  11.770340015   9.165003247    1   1   0
N        5.131395313  12.338375660   9.166933889    1   1   0
N        4.974395458   5.581122661   9.151585229    1   1   0
C        7.803979137  10.077035111   9.165575628    1   1   0
C        2.301926926   7.842452424   9.158152543    1   1   0
C        7.814147531   7.735214361   9.158453543    1   1   0
C        2.291812814  10.184264590   9.161590454    1   1   0
N        1.675723414   9.020767911   9.159958540    1   1   0
N        8.430332747   8.898710924   9.163137238    1   1   0
C        7.573351175  12.351558729   9.172519813    1   1   0
C        2.532462292   5.567984186   9.156809563    1   1   0
C        8.545496285  11.337653865   9.172373351    1   1   0
C        2.670997709  12.463260246   9.166795565    1   1   0
C        1.560318088   6.581873506   9.158833501    1   1   0
C        7.434583832   5.456252545   9.150352213    1   1   0
C        1.651070644  11.483918035   9.164644243    1   1   0
C        8.454683480   6.435400889   9.154388173    1   1   0
H        2.935679780   3.445644156   9.157751932    1   1   0
C        2.173888334   4.224293678   9.158680044    1   1   0
C        7.931976422  13.695238291   9.179642383    1   1   0
H        7.170268267  14.473980438   9.179908933    1   1   0
H        6.949422164   3.351369296   9.143177058    1   1   0
C        7.743638261   4.096433605   9.146174600    1   1   0
C        2.361504843  13.822982388   9.171191501    1   1   0
H        3.155462553  14.568324853   9.173241565    1   1   0
C        9.903108887  11.639107776   9.179968563    1   1   0
C        0.202690796   6.280367171   9.162401835    1   1   0
C        0.304949953  11.848116096   9.166830453    1   1   0
C        9.800694841   6.070768665   9.154573580    1   1   0
H       10.648868922  10.845093686   9.180707033    1   1   0
H       -0.472029090  11.085105057   9.165806587    1   1   0
H       -0.543144659   7.074314861   9.164311304    1   1   0
H       10.577919636   6.833511515   9.157955731    1   1   0
C        9.088042482   3.737801928   9.146119972    1   1   0
C        1.016978119  14.181227889   9.173398936    1   1   0
C        0.811165657   3.918365854   9.162325404    1   1   0
C        9.294712322  14.001096413   9.187087637    1   1   0
C        0.001182839  13.205979187   9.171124523    1   1   0
C       10.104065634   4.712803461   9.150512750    1   1   0
C       10.266320168  12.987660393   9.187501403    1   1   0
C       -0.160469280   4.931778303   9.164060438    1   1   0
H        9.364427610   2.683663084   9.142630640    1   1   0
H        0.740284174  15.235279553   9.177605775    1   1   0
H        0.492269099   2.876095789   9.164262229    1   1   0
H        9.613643045  15.043340147   9.193114998    1   1   0
H       -1.040834617  13.524888083   9.173298459    1   1   0
H       11.145988960   4.393590861   9.151035019    1   1   0
H       -1.215257211   4.657211114   9.167156788    1   1   0
H       11.321110876  13.262150906   9.194319537    1   1   0
LAST_IMAGE
ATOMIC_POSITIONS { angstrom }
H        5.524341484   9.923998522   9.155468229    1   1   0
H        5.484350077   7.976402286   9.156492030    1   1   0
N        3.745649522   7.508041291   9.156728606    1   1   0
N        6.423322370  10.455249960   9.158916931    1   1   0
N        6.360639409   7.408432535   9.154929495    1   1   0
N        3.806247861  10.464614585   9.158867020    1   1   0
C        6.270387641  11.827722206   9.164349137    1   1   0
C        3.839143434   6.144104505   9.156060284    1   1   0
C        6.151057886   6.043492514   9.152942810    1   1   0
C        3.956232024  11.823360814   9.162445572    1   1   0
N        5.118702360  12.479624028   9.164838894    1   1   0
N        4.973293300   5.439963784   9.153606037    1   1   0
C        7.755993262  10.089944016   9.161963189    1   1   0
C        2.420888188   7.829223326   9.159051862    1   1   0
C        7.707199719   7.718343292   9.155622628    1   1   0
C        2.469471335  10.198406618   9.160470411    1   1   0
N        1.846694667   9.026093128   9.160337722    1   1   0
N        8.305538575   8.892327752   9.159267333    1   1   0
C        7.594447594  12.400862262   9.171389748    1   1   0
C        2.511970579   5.530969808   9.158745948    1   1   0
C        8.512546800  11.325375962   9.170004187    1   1   0
C        2.655570519  12.490943244   9.165659798    1   1   0
C        1.606425260   6.604719092   9.160616006    1   1   0
C        7.450274895   5.416041108   9.151300955    1   1   0
C        1.706329172  11.455569690   9.164326484    1   1   0
C        8.412077700   6.452672832   9.153066579    1   1   0
H        2.780992126   3.386847227   9.158886401    1   1   0
C        2.070707515   4.212804979   9.160363319    1   1   0
C        8.035581030  13.724908038   9.180744219    1   1   0
H        7.318903839  14.544770923   9.182248018    1   1   0
H        7.086348143   3.285310648   9.147508091    1   1   0
C        7.836302810   4.074862168   9.149015873    1   1   0
C        2.269261613  13.826233993   9.170484326    1   1   0
H        3.013114025  14.622095876   9.171722116    1   1   0
C        9.888637713  11.557591942   9.177973598    1   1   0
C        0.233946692   6.388961610   9.164008249    1   1   0
C        0.343969791  11.727972163   9.167640224    1   1   0
C        9.777396660   6.163702306   9.152750857    1   1   0
H       10.587645695  10.722555757   9.177388761    1   1   0
H       -0.382544548  10.916330696   9.166689385    1   1   0
H       -0.458348629   7.229980511   9.165315275    1   1   0
H       10.510335636   6.969126291   9.154058254    1   1   0
C        9.198058126   3.793568428   9.148766234    1   1   0
C        0.899372589  14.102785626   9.173927401    1   1   0
C        0.690550870   3.993156682   9.164108178    1   1   0
C        9.407787990  13.949642356   9.188883892    1   1   0
C       -0.049279089  13.069167918   9.172423301    1   1   0
C       10.157078048   4.825980913   9.150718675    1   1   0
C       10.323273205  12.878450001   9.187512686    1   1   0
C       -0.214473666   5.065190703   9.165865884    1   1   0
H        9.534561789   2.757124101   9.146958246    1   1   0
H        0.558286454  15.138040196   9.178076164    1   1   0
H        0.306848375   2.972937730   9.165771279    1   1   0
H        9.786858313  14.971243999   9.197007462    1   1   0
H       -1.109887586  13.320475717   9.175187003    1   1   0
H       11.215470307   4.566548876   9.150600254    1   1   0
H       -1.284570319   4.857974024   9.168829434    1   1   0
H       11.391468847  13.093868444   9.194559046    1   1   0
END_POSITIONS
K_POINTS { gamma }
CELL_PARAMETERS { alat }
  19.694202156  -0.000002288   0.000000000
  -9.847103060  17.055678724   0.000000000
   0.000000000   0.000000000  16.000000000
END_ENGINE_INPUT
END


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