<div dir="ltr">Dear Thomas, <div><br></div><div>Your suggestion worked and the calculation converged - thank you very much for the speedy reply! A quick follow up question regarding the ALPHA value - is there a systematic way to optimize it for quickest convergence, or is it a binary outcome of converged/not converged? Thank you again. </div><div><br>Best Regards,</div><div>Pavlo</div><div><br>On Wednesday, October 16, 2019 at 2:02:09 PM UTC-5, tkuehne wrote:<blockquote class="gmail_quote" style="margin: 0;margin-left: 0.8ex;border-left: 1px #ccc solid;padding-left: 1ex;"><div style="word-wrap:break-word">Dear Pavlo, <div><br></div><div>try to reduce MIXING@DFT/SCF and potentially also the mixing scheme. </div><div>BTW, EPS_SCF 1.0E-8, which corresponds to the maximum norm within </div><div>\Delta P when using diagonalization, is very tight. </div><div><br></div><div>Best, </div><div>Thomas</div><div><br></div><div><blockquote type="cite"><div>Am 16.10.2019 um 20:22 schrieb Pavlo Kostetskyy <<a href="javascript:" target="_blank" gdf-obfuscated-mailto="iaZ3LuBQDgAJ" rel="nofollow" onmousedown="this.href='javascript:';return true;" onclick="this.href='javascript:';return true;">ko...@gmail.com</a>>:</div><br><div><div dir="ltr">Dear Colleagues, <div><br></div><div>I am looking to converge a geometry optimization for Ni-exchanged zeolite system. The unit cell has been optimized without issues. Below is the input and relevant output. All following SCF steps only oscillate between positive and negative energies  </div><div><br>Thank you in advance for any input!</div><div>-Pavlo</div><div><br></div><div><div>&GLOBAL</div><div>  PROJECT AFI</div><div>  RUN_TYPE GEO_OPT</div><div>  PRINT_LEVEL MEDIUM</div><div>&END GLOBAL</div><div>&FORCE_EVAL</div><div>  METHOD QS</div><div>  &DFT</div><div>    BASIS_SET_FILE_NAME GTH_BASIS_SETS</div><div>    POTENTIAL_FILE_NAME POTENTIAL</div><div>    CHARGE 0</div><div>    MULTIPLICITY 1</div><div>      &MGRID</div><div>      CUTOFF 500</div><div>      REL_CUTOFF 60</div><div>      NGRIDS 4</div><div>    &END MGRID</div><div>    &QS</div><div>       EPS_DEFAULT 1.0E-14</div><div>       MAP_CONSISTENT</div><div>    &END QS</div><div>  &SCF</div><div>     SCF_GUESS ATOMIC</div><div>     EPS_SCF 1.0E-8</div><div>     MAX_SCF 500</div><div>     ADDED_MOS  200</div><div>     CHOLESKY INVERSE</div><div>        &SMEAR  ON</div><div>         METHOD FERMI_DIRAC</div><div>         ELECTRONIC_TEMPERATURE [K] 300</div><div>        &END SMEAR</div><div>     &DIAGONALIZATION</div><div>          ALGORITHM STANDARD</div><div>     &END DIAGONALIZATION</div><div>  &END SCF</div><div>  &XC</div><div>      &XC_FUNCTIONAL PBE</div><div>      &PBE</div><div>      PARAMETRIZATION ORIG</div><div>      &END PBE</div><div>      &END XC_FUNCTIONAL</div><div>      &VDW_POTENTIAL</div><div>         DISPERSION_FUNCTIONAL PAIR_POTENTIAL</div><div>         &PAIR_POTENTIAL</div><div>           TYPE DFTD3</div><div>            REFERENCE_FUNCTIONAL PBE</div><div>            CALCULATE_C9_TERM .TRUE.</div><div>            PARAMETER_FILE_NAME dftd3.dat</div><div>            R_CUTOFF 15.0</div><div>            VERBOSE_OUTPUT .TRUE.</div><div>         &END PAIR_POTENTIAL</div><div>      &END vdw_POTENTIAL</div><div>    &END XC</div><div>   &POISSON</div><div>      POISSON_SOLVER PERIODIC </div><div>    &END POISSON </div><div>  &END DFT</div><div>  &SUBSYS</div><div>       &CELL</div><div> A      14.05700000    0.00000000    0.00000000</div><div> B     -7.02874500   12.17414345    0.00000000</div><div> C      0.00000000    0.00000000   17.46000000</div><div> PERIODIC XYZ</div><div>       &END CELL</div><div>    &TOPOLOGY</div><div>      COORD_FILE_NAME afi_supercell_2Al_anti_<wbr>higherer.xyz</div><div>      COORDINATE XYZ</div><div>    &END TOPOLOGY</div><div>   &KIND Al</div><div>    ELEMENT   Al</div><div>    BASIS_SET TZVP-GTH</div><div>    POTENTIAL GTH-PBE-q3</div><div>   &END KIND</div><div>   &KIND Si</div><div>    ELEMENT   Si</div><div>    BASIS_SET TZVP-GTH</div><div>    POTENTIAL GTH-PBE-q4</div><div>   &END KIND</div><div>   &KIND O</div><div>    ELEMENT   O</div><div>    BASIS_SET TZVP-GTH</div><div>    POTENTIAL GTH-PBE-q6</div><div>   &END KIND</div><div>   &KIND Ni</div><div>    ELEMENT   Ni</div><div>    BASIS_SET DZVP-MOLOPT-SR-GTH-q18</div><div>    POTENTIAL GTH-PBE-q18</div><div>   &END KIND</div><div>&END SUBSYS</div><div>&END FORCE_EVAL</div><div>&MOTION</div><div>  &GEO_OPT<br></div><div>    MAX_FORCE 0.0004</div><div>    MAX_ITER 2000</div><div>    OPTIMIZER BFGS</div><div>    TYPE MINIMIZATION</div><div>  &END GEO_OPT</div><div>&END MOTION</div><div><br></div><div>******************************<wbr>*****************************</div></div><div><br></div><div><div> SCF WAVEFUNCTION OPTIMIZATION</div><div><br></div><div>  Step     Update method      Time    Convergence         Total energy    Change</div><div>  ------------------------------<wbr>------------------------------<wbr>------------------</div><div><br></div><div>  Trace(PS):                                  784.0000000000</div><div>  Electronic density on regular grids:       -783.9999999995        0.0000000005</div><div>  Core density on regular grids:              784.0000000000       -0.0000000000</div><div>  Total charge density on r-space grids:        0.0000000005</div><div>  Total charge density g-space grids:           0.0000000005</div><div><br></div><div>     1 P_Mix/Diag. 0.40E+00    2.1     8.22481733     -1901.7313217467 -1.90E+03</div><div><br></div><div>  Trace(PS):                                  784.0000000000</div><div>  Electronic density on regular grids:       -783.9999999995        0.0000000005</div><div>  Core density on regular grids:              784.0000000000       -0.0000000000</div><div>  Total charge density on r-space grids:        0.0000000005</div><div>  Total charge density g-space grids:           0.0000000005</div><div><br></div><div>     2 P_Mix/Diag. 0.40E+00    3.0     7.21038392     -1900.7645680671  9.67E-01</div><div><br></div><div>  Trace(PS):                                  784.0000000000</div><div>  Electronic density on regular grids:       -783.9999999995        0.0000000005</div><div>  Core density on regular grids:              784.0000000000       -0.0000000000</div><div>  Total charge density on r-space grids:        0.0000000005</div><div>  Total charge density g-space grids:           0.0000000005</div><div><br></div><div>     3 P_Mix/Diag. 0.40E+00    2.9     5.21542654     -1899.9828419152  7.82E-01</div><div><br></div><div>  Trace(PS):                                  784.0000000000</div><div>  Electronic density on regular grids:       -783.9999999995        0.0000000005</div><div>  Core density on regular grids:              784.0000000000       -0.0000000000</div><div>  Total charge density on r-space grids:        0.0000000005</div><div>  Total charge density g-space grids:           0.0000000005</div><div><br></div><div>     4 P_Mix/Diag. 0.40E+00    2.9   402.76710057     -1895.0291997541  4.95E+00</div><div><br></div><div>  Trace(PS):                                  783.9999999999</div><div>  Electronic density on regular grids:       -783.9999999995        0.0000000005</div><div>  Core density on regular grids:              784.0000000000       -0.0000000000</div><div>  Total charge density on r-space grids:        0.0000000005</div><div>  Total charge density g-space grids:           0.0000000005</div><div><br></div><div>     5 P_Mix/Diag. 0.40E+00    3.0  1907.73544022     -1877.8977759403  1.71E+01</div><div><br></div><div>  Trace(PS):                                  783.9999999999</div><div>  Electronic density on regular grids:       -783.9999999995        0.0000000005</div><div>  Core density on regular grids:              784.0000000000       -0.0000000000</div><div>  Total charge density on r-space grids:        0.0000000005</div><div>  Total charge density g-space grids:           0.0000000005</div><div><br></div><div>     6 P_Mix/Diag. 0.40E+00    3.7  2931.12581846     -1401.4996955435  4.76E+02</div><div><br></div><div>  Trace(PS):                                  784.0000000000</div><div>  Electronic density on regular grids:       -783.9999999994        0.0000000006</div><div>  Core density on regular grids:              784.0000000000       -0.0000000000</div><div>  Total charge density on r-space grids:        0.0000000006</div><div>  Total charge density g-space grids:           0.0000000006</div><div><br></div><div><br></div></div><div><br></div></div><div><br></div>

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