[CP2K-user] Reevaluating energy in geometry optimization

e khodayar e.khod... at gmail.com
Sun Jan 12 07:09:21 UTC 2020


Hi,
In the main output file geometry optimization,  at the end of  geometry 
optimisation step, I have the following information:
 --------  Informations at step =    53 ------------
  Optimization Method        =                   CG
  Total Energy               =       -94.0112708604
  Real energy change         =        -0.0000036472
  Decrease in energy         =                  YES
  Used time                  =              343.953

  Convergence check :
  Max. step size             =         0.0006162087
  Conv. limit for step size  =         0.0010000000
  Convergence in step size   =                  YES
  RMS step size              =         0.0002737159
  Conv. limit for RMS step   =         0.0010000000
  Convergence in RMS step    =                  YES
  Max. gradient              =         0.0005305121
  Conv. limit for gradients  =         0.0010000000
  Conv. in gradients         =                  YES
  RMS gradient               =         0.0002356500
  Conv. limit for RMS grad.  =         0.0010000000
  Conv. in RMS gradients     =                  YES
 ---------------------------------------------------

 *******************************************************************************
 ***                    GEOMETRY OPTIMIZATION COMPLETED                    
  ***
 *******************************************************************************

                    Reevaluating energy at the minimum

 Number of electrons:                                                      
   68
 Number of occupied orbitals:                                              
   34
 Number of molecular orbitals:                                              
  34

 Number of orbital functions:                                              
  232
 Number of independent orbital functions:                                  
  232

 Extrapolation method: ASPC


 SCF WAVEFUNCTION OPTIMIZATION

  Step     Update method      Time    Convergence         Total energy    
Change
  
------------------------------------------------------------------------------
     1 Pulay/Diag. 0.50E+00    3.7     0.00001087       -94.0112708604 
-9.40E+01
     2 Pulay/Diag. 0.50E+00    4.7     0.00001294       -94.0112951749 
-2.43E-05
     3 Pulay/Diag. 0.50E+00    4.3     0.00000783       -94.0112680643  
2.71E-05

  *** SCF run converged in     3 steps ***


  Electronic density on regular grids:        -67.9999999983        
0.0000000017
  Core density on regular grids:               68.0000000001        
0.0000000001
  Total charge density on r-space grids:        0.0000000017
  Total charge density g-space grids:           0.0000000017

  Overlap energy of the core charge distribution:              
 0.00000565490189
  Self energy of the core charge distribution:              
 -223.82607238936723
  Core Hamiltonian energy:                                    
 69.37181702794591
  Hartree energy:                                              
89.86177654697752
  Exchange-correlation energy:                                
-29.41879490480421

  Total energy:                                              
 -94.01126806434611

 ENERGY| Total FORCE_EVAL ( QS ) energy (a.u.):              
-94.011268064346112

Now my question is:
Which total energy i have to use for my data?and why this two total energy 
that with yellow color is different?
Thanks in advance.

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