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    #2 Re: Multiwfn and wavefunction analysis Acceleration calculation 2023-06-23 12:11:49

    This is my input file. Thanks a lot  for your advice and help!
    ___________________________________________________________

    &FORCE_EVAL
      METHOD Quickstep
      &DFT
        UKS
        BASIS_SET_FILE_NAME ${data}/BASIS_SET
        BASIS_SET_FILE_NAME ${data}/BASIS_MOLOPT
        POTENTIAL_FILE_NAME ${data}/GTH_POTENTIALS
           &MGRID
          CUTOFF 600
          REL_CUTOFF 60
          NGRIDS 4
        &END MGRID
        &QS
          EPS_DEFAULT 1.0E-15
          #      EPS_PGF_ORB 1.0E-06
        &END QS
        &POISSON
         PERIODIC XYZ
        &END POISSON
        &SCF
         MAX_SCF 500
         SCF_GUESS RESTART
         EPS_SCF   5.0E-6
         CHOLESKY INVERSE
         &OT
            PRECONDITIONER FULL_SINGLE_INVERSE
          #  ENERGY_GAP 0.001
            MINIMIZER DIIS
         &END OT
        &PRINT
           &RESTART
             &EACH
               MD 20
             &END EACH
           &END RESTART
         &END PRINT
        &END SCF
        &XC
          &XC_GRID
             XC_DERIV  SPLINE2
             XC_SMOOTH_RHO NN50
        &END XC_GRID
        &XC_FUNCTIONAL PBE
        &END XC_FUNCTIONAL
        &VDW_POTENTIAL
             POTENTIAL_TYPE   NON_LOCAL
             &NON_LOCAL
               CUTOFF 300.
               KERNEL_FILE_NAME ${data}/rVV10_kernel_table.dat
               TYPE RVV10
             &END NON_LOCAL
        &END VDW_POTENTIAL
        &END XC
       &PRINT
         &MO_MOLDEN #Exporting .molden file containing wavefunction information
           NDIGITS 9 #Output orbital coefficients if absolute value is larger than 1E-9
         &END MO_MOLDEN

       &END PRINT
      &END DFT
      &PROPERTIES
        &TDDFPT
          NSTATES   500
          MIN_AMPLITUDE 0.01
          MAX_KV 100
         &END TDDFPT
      &END PROPERTIES

      &SUBSYS
        &KIND C
          ELEMENT   C
          BASIS_SET DZVP-MOLOPT-SR-GTH-q4
          POTENTIAL GTH-PBE
        &END KIND

        &KIND H
          ELEMENT   H
          BASIS_SET DZVP-MOLOPT-SR-GTH-q1
          POTENTIAL GTH-PBE
        &END KIND

        &KIND S
          ELEMENT   S
          BASIS_SET DZVP-MOLOPT-SR-GTH-q6
          POTENTIAL GTH-PBE
        &END KIND
        &CELL
          A 34.76132 0.0 0.0
          B -17.380659999999992 30.10418618908008 0.0
          C 0.0 0.0 33.5796
          MULTIPLE_UNIT_CELL  1 1 1
           PERIODIC XYZ
        &END CELL
        &TOPOLOGY
            COORD_FILE_NAME X.xyz
            COORD_FILE_FORMAT xyz
            MULTIPLE_UNIT_CELL  1 1 1
        &END TOPOLOGY
      &END SUBSYS
    &END FORCE_EVAL
    &MOTION
      &GEO_OPT
          TYPE MINIMIZATION
          MAX_DR    1.0E-03
          MAX_FORCE 1.0E-03
          RMS_DR    1.0E-03
          RMS_FORCE 1.0E-03
          MAX_ITER 500
          OPTIMIZER BFGS
          &BFGS
    #              RESTART_FILE_NAME Cu2O_SM26-BFGS.Hessian
    #              RESTART_HESSIAN
          &END BFGS
          #      &CG
          #         MAX_STEEP_STEPS  0
          #         RESTART_LIMIT 9.0E-01
          #      &END CG
       &END GEO_OPT
    &END MOTION

    #3 Re: Multiwfn and wavefunction analysis Acceleration calculation 2023-06-22 08:49:43

    Thanks a lot, sobereva! I'm sure I use 24 threads just showing like yours. My system is a heterostructure combined two layers, which has more than 700 atoms. Now I used DZVP and PBE in CP2K to do some tests. High accuracy is needed for my further calculation(eg: HSE06, PBE0) At beginning, I used 0.5 of grid and it was so slow. Now I use 1 for grid and it become much faster. However, it still needs 20-30 mins. What can I do to further improve the speed?

    Thanks in advance!

    Best regards,
    Gloria

    #4 Multiwfn and wavefunction analysis Acceleration calculation 2023-06-21 15:24:14

    gloria
    Replies: 6

    Hi all,

    I want to use Multiwfn to analysis electron-hole transfer of excitation. I calculated 500 excited states. The analysis process is really slow. Could you tell me any methods to improve analysis speed?( I use no GUI version in supercomputer, I have tried to change nthreads to 24 in setting.ini. It doesn't seem to work.

    Thanks in advance for your help.

    All the regards,

    Gloria

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