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chdx0618

木虫 (小有名气)

[交流] 【求助】CASTEP模块几何优化失败,求解决方案。失败原因详见本帖内容 已有14人参与

CASTEP模块几何优化失败,求解决方案。失败原因如下:
*Warning* max. SCF cycles performed but system has not reached the groundstate.
  
Current total energy, E     =  -5466.593402796     eV
Current free energy (E-TS)  =  -5466.679640124     eV
(energies not corrected for finite basis set)

NB est. 0K energy (E-0.5TS)      =  -5466.636521460     eV

  ********************************************************
  Warning: electronic minimisation did not converge during
           finite basis set correction.
  ********************************************************
Checkpoint file cannot be written.
Error calculate_finite_basis : Convergence failed when doing finite basis set correction.
Current trace stack:
calculate_finite_basis_corr
check_elec_ground_state
castep


降低精度后:
Error in calculate_finite_basis:
     previous calculation had total energy = -33482.98282286      eV
     and this calculation has total energy = -33477.62803476      eV
      => something has gone seriously wrong with minimiser
  
Checkpoint file cannot be written.
Error in calculate_finite_basis: total energies are not variational - aborting
Current trace stack:
calculate_finite_basis_corr
check_elec_ground_state
castep

[ Last edited by chdx0618 on 2011-3-24 at 09:27 ]
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whb06370283

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小木虫(金币+0.5):给个红包,谢谢回帖
不收敛就让SCF增大,我又一次200都不收敛,增加到了400
31楼2011-12-08 14:21:08
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