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稀土摻雜優(yōu)化后的警告 求解決
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稀土摻雜,粗精度算了兩步就優(yōu)化成功了,結(jié)果文件沒(méi)有警告!提高精度后,優(yōu)化成功但是結(jié)果文件中有警告!警告如下,仍是提高精度!求解決 trial step suggests complex energy landscape in which simple line minimization will fail. - This is usually an indication that the forces/streses are not accurate enough. Consider making the following changes: 1) Increase cutoff_energy or basis_precision 2) Reduce elec_energy_tol and/or elec_force_tol 3) Increase grid_scale 4) Increase fine_grid_scale BFGS: Warning - Repeated consecutive reset of inverse Hessian BFGS: without satisfying convergence criteria which BFGS: looks like BFGS has run out of search directions. BFGS: Warning - Lets try allowing some uphill steps and see if BFGS: we can get around this barrier. BFGS: Warning - It is possible that the system may now converge to BFGS: a stationary point OTHER than the desired minimum. BFGS: Hint - this may be an indication that either: BFGS: a) you are using a poor guess at geom_frequency_est BFGS: and/or geom_modulus_est, or BFGS: b) you are using unrealistic convergence criteria. BFGS: Suggest therefore that you consider changing them! |
能帶和態(tài)密度分析 |
找到一些相關(guān)的精華帖子,希望有用哦~
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