[Pw_forum] Convergence of forces

Sergei Lisenkov proffess at yandex.ru
Sun Apr 25 16:00:17 CEST 2004


Dear PWscf authors and users,

I performed the relaxation of the structure using PWscf. I looked into output file for forces convergence:

.....
     Total force =     0.002421     Total SCF correction =     0.001485

     bfgs converged in  10 scf cycles and   8 bfgs steps
.....

By default,  convergence threshold on forces is 1.d-3 (a.u). But the value of the total force is bigger than this threshold. May be, there is another criterion for the total relaxation than forces?

Thank you very much,
 Best wishes,
  Sergey





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