[Pw_forum] SCF Convergence Criteria

[David Foster]

HiI have set "Conv_Thr" to 1.0D-5 in my calculation. As you see follow, the estimated scf change is less than 10^(-5) but it has not been converged!!! Is there any criteria for SCF convergence in the code which has not been documented in the manual?


======total cpu time spent up to now is     8119.0 secs

     total energy              =  -16045.57783278 Ry
     Harris-Foulkes estimate   =  -16045.57783128 Ry
     estimated scf accuracy    <       0.00000207 Ry

     total magnetization       =    -0.01 Bohr mag/cell
     absolute magnetization    =    79.80 Bohr mag/cell

     iteration #164     ecut=   140.00 Ry     beta=0.01
     Davidson diagonalization with overlap
     ethr =  3.21E-10,  avg # of iterations =  2.0

     total cpu time spent up to now is     8138.3 secs

     total energy              =  -16045.57783497 Ry
     Harris-Foulkes estimate   =  -16045.57783360 Ry
     estimated scf accuracy    <       0.00000201 Ry

     total magnetization       =    -0.01 Bohr mag/cell
     absolute magnetization    =    79.80 Bohr mag/cell

     iteration #165     ecut=   140.00 Ry     beta=0.01
     Davidson diagonalization with overlap
     ethr =  3.21E-10,  avg # of iterations =  2.0

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