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632280562銀蟲(chóng) (小有名氣)
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[求助]
CASTEP在計(jì)算是出現(xiàn)問(wèn)題啦,求大俠幫忙啊。。。
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我的CASTEP在計(jì)算前面幾個(gè)材料的時(shí)候都挺好的,可是再計(jì)算一個(gè)新的就出現(xiàn)問(wèn)題啦,具體表現(xiàn)在不能進(jìn)行幾何優(yōu)化,我變換了一下截?cái)嗄芤约発-point 都不行,軟件提示為: Warning: There are no empty bands for at least one kpoint and spin; this may slow the convergence and/or lead to an inaccurate groundstate. If this warning persists, you should consider increasing nextra_bands and/or reducing smearing_width in the param file. Recommend using nextra_bands of 6 to 13. 還請(qǐng)那位大俠幫忙解決一下啊,謝謝啦。! |
第一原理資料匯編 |
木蟲(chóng) (著名寫(xiě)手)
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設(shè)定計(jì)算條件時(shí),點(diǎn)一下files,然后在彈出窗口里點(diǎn)擊save files,這樣會(huì)把輸入條件以文件的形式存下來(lái),點(diǎn)開(kāi)那個(gè)****.param文件,然后按提示把 nextra_bands 值從 6改為 13。 increasing nextra_bands reducing smearing_width 提示說(shuō)得很清楚要改這兩值,前一個(gè)是提高,比較容易,后面一個(gè)值一般已經(jīng)比較小了,再減小不知道行不行,你也可以試一下。 |

鐵桿木蟲(chóng) (正式寫(xiě)手)
銀蟲(chóng) (小有名氣)
版主 (著名寫(xiě)手)

木蟲(chóng) (小有名氣)
| 我曾經(jīng)也遇到過(guò)這個(gè)問(wèn)題,在計(jì)算金屬材料的時(shí)候都需要增加空帶或者減小smearing值,具體方法是run——files——save files(project下面會(huì)多幾個(gè)文件)——打開(kāi)**.param——找到上面提到的那兩個(gè)參數(shù),并做相應(yīng)更改——保存——點(diǎn)擊run files |
銀蟲(chóng) (小有名氣)
銀蟲(chóng) (小有名氣)
銀蟲(chóng) (小有名氣)
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我在增大空帶值之后又出現(xiàn)了新的問(wèn)題,求解啊! ******************************************************** 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 Error calculate_finite_basis : Convergence failed when doing finite basis set correction. Current trace stack: calculate_finite_basis_corr check_elec_ground_state castep Error calculate_finite_basis : Convergence failed when doing finite basis set correction. Current trace stack: calculate_finite_basis_corr check_elec_ground_state castep Error calculate_finite_basis : Convergence failed when doing finite basis set correction. Current trace stack: calculate_finite_basis_corr check_elec_ground_state castep MPI Application rank 0 exited before MPI_Finalize() with status 1 |
木蟲(chóng) (小有名氣)
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