[CP2K-user] [CP2K:14504] Converging issue: WARNING OT eigensolver did not converge

Sun Geng gengs... at gmail.com
Mon Jan 11 20:59:52 UTC 2021


Hi Xiaoyu,
Use a different OT preconditioner, such as FULL_ALL may be helpful.
Why do you use ATOM section for your simulation?
I thought the vdw correction should be in the  DFT / XC /
VDW_POTENTIAL, but this may be not relevant to your SCF convergence
problem.

Geng


Xiaoyu Wang <xwa... at nd.edu> 于2021年1月11日周一 上午11:51写道:
>
> Dear all,
>
> I am running MD on a small liquid system in CP2K. The system was equilibrated from classical MD, then I took the coordinates and used them in AIMD. However, when the MD started, I kept getting warning that the OT solver did not converge.
>
> The warning is as follow:
> WARNING OT eigensolver did not converge: current gradient    0.3027933558E+00
> 64  P_Mix/OTdiag 0.40E+00  870.2     5.66352979       867.8861097865  1.27E+01
>
> I did not minimize before turning on the MD. So, does the warning mean that I started from a bad configuration? Or, is there a bad choice on SCF specifications?
>
> Any suggestions are appreciated.
>
> My input is as follow:
>
> &GLOBAL
>
>   PROJECT_NAME cateline_aimd
>
>   RUN_TYPE MD
>
> &END GLOBAL
>
>
>
> &MOTION
>
>   &MD
>
>     ENSEMBLE NVT
>
>     STEPS 60000
>
>     TIMESTEP 0.5
>
>     STEP_START_VAL 0
>
>     TEMPERATURE 333.0
>
>     &THERMOSTAT
>
>       TYPE NOSE
>
>       &NOSE
>
>         TIMECON 50
>
>       &END NOSE
>
>     &END THERMOSTAT
>
>   &END MD
>
>   &PRINT
>
>     &TRAJECTORY LOW
>
>       FILENAME cateline_traj.pdb
>
>       FORMAT PDB
>
>       CHARGE_OCCUP .TRUE.
>
>     &END TRAJECTORY
>
>     &RESTART HIGH
>
>       FILENAME cateline.restrt
>
>     &END RESTART
>
>   &END PRINT
>
> &END MOTION
>
>
>
> &ATOM
>
>   &METHOD
>
>     &XC
>
>       &VDW_POTENTIAL
>
>         &PAIR_POTENTIAL
>
>           TYPE DFTD3(BJ)
>
>         &END PAIR_POTENTIAL
>
>       &END VDW_POTENTIAL
>
>     &END XC
>
>   &END METHOD
>
> &END ATOM
>
>
>
> &FORCE_EVAL
>
>   METHOD Quickstep
>
>
>
>   &DFT
>
>     POTENTIAL_FILE_NAME ./basis/GTH_POTENTIALS
>
>     BASIS_SET_FILE_NAME ./basis/BASIS_MOLOPT
>
>     &SCF
>
>       MAX_SCF 100
>
>       EPS_SCF 1e-06
>
>       &DIAGONALIZATION ON
>
>         ALGORITHM OT
>
>         &OT ON
>
>           MINIMIZER DIIS
>
>           PRECONDITIONER FULL_SINGLE_INVERSE
>
>         &END OT
>
>       &END DIAGONALIZATION
>
>       &OUTER_SCF ON
>
>         OPTIMIZER DIIS
>
>         EPS_SCF 1e-06
>
>         MAX_SCF 10
>
>       &END OUTER_SCF
>
>       &PRINT
>
>         &RESTART OFF
>
>         &END
>
>       &END
>
>     &END SCF
>
>
>
>     &PRINT
>
>       &E_DENSITY_CUBE HIGH
>
>         &EACH
>
>           MD 60000
>
>         &END
>
>       &END E_DENSITY_CUBE
>
>     &END PRINT
>
>
>
>     &MGRID
>
>       NGRIDS 5
>
>       CUTOFF 400
>
>       REL_CUTOFF 40
>
>     &END MGRID
>
>
>
>     &XC
>
>       &XC_GRID
>
>         XC_SMOOTH_RHO NN10
>
>         XC_DERIV NN10_SMOOTH
>
>       &END XC_GRID
>
>       &XC_FUNCTIONAL BLYP
>
>       &END XC_FUNCTIONAL
>
>     &END XC
>
>   &END DFT
>
>
>
>   &SUBSYS
>
>     &CELL
>
>       ABC [angstrom] 12.36828 12.36828 12.36828
>
>     &END CELL
>
>     &COORD
>
>       C     4.261754   11.548943    2.817667
>
>       C     3.347946    0.206475    2.112224
>
>       C     1.917183    2.166370    2.437704
>
>       C     2.834664    1.357001    4.424206
>
>       C     1.236194   -0.017400    3.268484
>
>       O     5.289112   -0.135509    3.416853
>
>       N     2.358508    0.941622    3.022305
>
>       H     3.723737   10.868977    3.544036
>
>       H     4.577803   10.748956    2.164886
>
>       H     2.795652   -0.214242    1.260641
>
>       H     3.874703    0.996929    1.611503
>
>       H     1.242846    2.739843    3.102418
>
>       H     2.725758    2.745129    2.237551
>
>       H     1.422402    2.011069    1.465929
>
>       H     1.984136    1.861137    4.950524
>
>       H     3.130468    0.428885    4.900464
>
>       H     3.749921    1.977234    4.315290
>
>       H     0.903801   11.827011    2.351470
>
>       H     1.525496   11.664694    4.081558
>
>       H     0.454501    0.540998    3.744486
>
>       H     5.590392   11.687091    4.209367
>
>       Cl    6.335235   10.761128    5.559303
>
>       C     5.340000    6.125715    3.453429
>
>       C     6.095795    5.144372    4.472093
>
>       C     7.708698    4.420084    2.700566
>
>       C     5.659532    3.052148    3.047736
>
>       C     7.267485    3.001303    4.725833
>
>       O     4.160876    5.586834    2.905461
>
>       N     6.667069    3.949040    3.738204
>
>       H     5.096662    7.061323    4.023006
>
>       H     6.036834    6.478538    2.605439
>
>       H     5.400113    4.717533    5.156670
>
>       H     6.926040    5.682724    4.908797
>
>       H     7.199353    4.765525    1.786607
>
>       H     8.337577    5.213634    3.182330
>
>       H     8.370583    3.596885    2.314821
>
>       H     6.217277    2.268056    2.492054
>
>       H     5.034183    2.621050    3.821603
>
>       H     5.001305    3.570821    2.363859
>
>       H     7.553037    2.090540    4.302412
>
>       H     8.165811    3.417846    5.143536
>
>       H     6.547621    2.694312    5.500480
>
>       H     3.465380    6.277884    2.615946
>
>       Cl    2.130719    7.310543    2.224924
>
>       C     2.366902    9.669135   -0.223627
>
>       C     1.059126    9.126843   11.347234
>
>       C     0.068387    8.491914    9.107748
>
>       C     1.885564    7.113255   10.152123
>
>       C     2.259940    9.272103    9.074585
>
>       O     1.992054   10.000832    1.085368
>
>       N     1.317255    8.502820    9.934926
>
>       H     3.176573    8.905667   -0.262850
>
>       H     2.800233   10.576472   11.679292
>
>       H     0.372690    9.903037   11.112641
>
>       H     0.551834    8.298784   11.858625
>
>       H     0.131834    7.779253    8.298705
>
>       H    11.713324    8.030959    9.837498
>
>       H    -0.259372    9.468009    8.917093
>
>       H     1.156173    6.484256   10.553937
>
>       H     2.173792    6.676659    9.235168
>
>       H     2.769121    7.237635   10.886858
>
>       H     1.912773   10.317984    9.050233
>
>       H     3.252807    9.193469    9.650925
>
>       H     2.399248    8.815309    8.052596
>
>       H     2.039957    9.141303    1.583042
>
>       Cl    1.831129    1.239853   10.108583
>
>       O     0.148162    0.500045    0.152726
>
>       O    11.264214    0.552326    9.730442
>
>       C    11.587994   11.999738   11.995878
>
>       C    11.019115   11.948403   10.695787
>
>       C    11.020046   11.081892    0.572400
>
>       C    10.216132   10.913310   10.340238
>
>       C    10.010312   10.143056    0.238315
>
>       C     9.630628   10.021741   11.295334
>
>       H    11.409182   11.083069    1.593903
>
>       H     9.962481   10.784509    9.277308
>
>       H     9.631561    9.481165    1.028851
>
>       H     8.931580    9.227667   10.958443
>
>       H     0.763121    0.787446   11.838692
>
>       H    -0.223020    0.962387    9.901604
>
>       O     2.893878    8.804688    4.601245
>
>       O     3.468801   10.880224    6.413660
>
>       C     1.866936    9.508337    5.138288
>
>       C     2.146912   10.549937    6.056343
>
>       C     0.487892    9.265018    4.823877
>
>       C     1.124135   11.259390    6.677845
>
>       C    11.855022   10.009737    5.391806
>
>       C    -0.210378   10.975770    6.352926
>
>       H     0.352109    8.528473    4.011545
>
>       H     1.328094   11.933671    7.509467
>
>       H    10.805676    9.823444    5.105932
>
>       H    11.356157   11.524723    6.801700
>
>       H     2.523223    8.200476    3.886146
>
>       H     4.097260   10.315111    5.943951
>
>       O     7.427638    8.458861    6.878919
>
>       O     7.923130    8.866777    3.967259
>
>       C     8.325494    7.745720    6.116801
>
>       C     8.678836    8.027955    4.787649
>
>       C     8.973806    6.732948    6.861676
>
>       C     9.678727    7.207891    4.231120
>
>       C     9.931637    5.934659    6.330935
>
>       C    10.254167    6.200375    4.953235
>
>       H     8.816130    6.587371    7.966924
>
>       H     9.888968    7.384442    3.192549
>
>       H    10.397178    5.173081    6.935264
>
>       H    11.033008    5.503415    4.489191
>
>       H     7.082730    9.180353    6.350507
>
>       H     7.281066    9.479342    4.371889
>
>       O     4.522487    0.600517   10.927052
>
>       O     3.133888    2.987735   11.881898
>
>       C     5.156095    1.753312   11.206236
>
>       C     4.467139    2.811141   11.812351
>
>       C     6.534461    1.761279   11.060006
>
>       C     5.243562    3.938237   -0.195303
>
>       C     7.284902    2.844929   11.510625
>
>       C     6.633729    3.983145   12.026795
>
>       H     7.047167    0.846974   10.796458
>
>       H     4.780087    4.858824    0.181767
>
>       H     8.396068    2.813574   11.407017
>
>       H     7.246006    4.912351   -0.282160
>
>       H     3.600795    0.804309   10.566301
>
>       H     2.729254    2.454117   11.115721
>
>       O    11.472094    1.814069    4.737758
>
>       O     9.477755   -0.010489    4.996583
>
>       C    10.566734    1.636468    3.690860
>
>       C     9.650172    0.517364    3.768611
>
>       C    10.754835    2.365190    2.519111
>
>       C     8.877234    0.184951    2.651477
>
>       C     9.984468    1.976096    1.400581
>
>       C     9.118040    0.853584    1.447955
>
>       H    11.546824    3.085098    2.371404
>
>       H     8.024604   11.820500    2.750229
>
>       H    10.133467    2.505167    0.501569
>
>       H     8.582979    0.492784    0.594453
>
>       H    11.153778    1.413594    5.613791
>
>       H     8.623632   11.889325    5.187840
>
>       O     3.319759    3.536680    8.851106
>
>       O     0.857352    2.518155    7.566892
>
>       C     2.837915    4.011276    7.694792
>
>       C     1.586802    3.551802    7.094212
>
>       C     3.441193    5.183420    7.247359
>
>       C     1.178154    4.292384    5.963171
>
>       C     2.932155    5.872739    6.138626
>
>       C     1.830371    5.417795    5.521047
>
>       H     4.344641    5.568763    7.818819
>
>       H     0.276609    4.027198    5.482114
>
>       H     3.447934    6.750790    5.766943
>
>       H     1.505615    5.939195    4.598062
>
>       H     2.701285    2.868196    9.226659
>
>       H     1.443709    1.936604    8.136584
>
>       O     7.903034   11.567216    7.804954
>
>       O     5.368498    0.722572    7.482729
>
>       C     7.822337    0.567125    7.848121
>
>       C     6.588210    1.336298    7.791232
>
>       C     8.993251    1.232815    7.928763
>
>       C     6.637906    2.702943    8.010678
>
>       C     9.025672    2.612102    8.233657
>
>       C     7.831685    3.321520    8.295827
>
>       H     9.918448    0.665974    7.844433
>
>       H     5.758900    3.346384    7.942744
>
>       H    10.017651    3.082458    8.180526
>
>       H     7.787636    4.360152    8.543353
>
>       H     7.296412   11.070941    7.183850
>
>       H     5.524681   -0.090678    7.019752
>
>       O     5.240745    7.947526    8.593592
>
>       O     5.522042   10.611876    9.429919
>
>       C     5.558661    8.246414    9.884562
>
>       C     5.685966    9.596997   10.320851
>
>       C     5.739402    7.215743   10.805363
>
>       C     5.964099    9.925142   11.680732
>
>       C     6.021101    7.567561   -0.219810
>
>       C     6.077419    8.865204    0.256880
>
>       H     5.681087    6.210422   10.470186
>
>       H     6.041907   10.972137   11.967768
>
>       H     6.360533    6.770257    0.483199
>
>       H     6.339262    9.044673    1.289508
>
>       H     5.779937    8.556020    8.033497
>
>       H     5.545422   11.461671    9.942361
>
>       O    11.627035    7.125340    1.535737
>
>       O     0.943133    4.911325    1.359164
>
>       C    11.481482    6.181374    0.520473
>
>       C     0.024558    5.114847    0.442646
>
>       C    10.572051    6.448020   11.821555
>
>       C    -0.014593    4.237492   11.700148
>
>       C    10.548266    5.671999   10.694742
>
>       C    11.447713    4.559988   10.670095
>
>       H     9.851900    7.295578   11.917698
>
>       H     0.467113    3.312442   11.703180
>
>       H    10.015331    5.819065    9.799571
>
>       H    11.262793    3.827837    9.906106
>
>       H     0.179761    7.089382    1.849795
>
>       H     1.141839    5.851285    1.702068
>
>     &END COORD
>
>     &KIND C
>
>       BASIS_SET DZVP-MOLOPT-SR-GTH
>
>       POTENTIAL GTH-BLYP-q4
>
>     &END KIND
>
>     &KIND O
>
>       BASIS_SET DZVP-MOLOPT-SR-GTH
>
>       POTENTIAL GTH-BLYP-q6
>
>     &END KIND
>
>     &KIND N
>
>       BASIS_SET DZVP-MOLOPT-SR-GTH
>
>       POTENTIAL GTH-BLYP-q5
>
>     &END KIND
>
>     &KIND H
>
>       BASIS_SET DZVP-MOLOPT-SR-GTH
>
>       POTENTIAL GTH-BLYP-q1
>
>     &END KIND
>
>     &KIND Cl
>
>       BASIS_SET DZVP-MOLOPT-SR-GTH
>
>       POTENTIAL GTH-BLYP-q7
>
>     &END KIND
>
>   &END SUBSYS
>
> &END FORCE_EVAL
>
>
>
>
>
>
>
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