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didi5158金蟲 (小有名氣)
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[交流]
【求助成功】結(jié)構(gòu)優(yōu)化過程中遇到了一些問題,請大家?guī)椭? 已有4人參與
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本人用PWscf做晶體結(jié)構(gòu)優(yōu)化過程中,計(jì)算一段時(shí)間一會out文件顯示: too many C _bond not converged! 之后計(jì)算終止,total energy計(jì)算顯示是收斂的。 不知道,大家是否遇到過這種事情,請大家?guī)椭笇?dǎo),十分感謝! 輸入卡如下: &CONTROL calculation = 'relax' , outdir = '/root/espresso-4.2/work/Dean/LSAFB/temp/' , wfcdir = '/root/espresso-4.2/work/Dean/LSAFB/wftemp/' , pseudo_dir = '/root/espresso-4.2/work/Dean/LSAFB/pp/' , prefix = 'LSAF' , lkpoint_dir = .true. , etot_conv_thr = 1.0D-5 , forc_conv_thr = 1.0D-4 , nstep = 100 , tstress = .true. , tprnfor = .true. , dt = 20 , dipfield = .true. , / &SYSTEM ibrav = 4, celldm(1) = 5.0716, celldm(3) = 2.0093, nat = 18, ntyp = 4, ecutwfc = 80 , occupations = 'smearing' , degauss = 0.02 , smearing = 'gaussian' , / &ELECTRONS electron_maxstep = 100, conv_thr = 1.0D-12 , mixing_mode = 'plain' , mixing_beta = 0.7D , / &IONS ion_dynamics = 'bfgs' , pot_extrapolation = 'second_order' , wfc_extrapolation = 'second_order' , upscale = 10D , bfgs_ndim = 1 , trust_radius_max = 0.8D0 , trust_radius_min = 1.0D-3 , trust_radius_ini = 0.5D , / ATOMIC_SPECIES Li 6.94100 Li.pbe-n-van.UPF Al 26.98154 Al.pbe-sp-van.UPF Sr 87.62000 Sr.pbe-nsp-van.UPF F 18.99840 F.pbe-n-van.UPF ATOMIC_POSITIONS alat Sr 0.000000000 0.000000000 0.000000000 Sr 0.000000000 0.000000000 1.004630000 Li 0.500000000 0.288650000 1.500000000 Li 0.000000000 0.577370000 0.502310000 Al 0.500500000 0.288650000 0.502320000 Al 0.000000000 0.577380000 1.506900000 F 0.371500000 0.028400000 0.298380000 F 0.789650000 0.307530000 0.298380000 F 0.338850000 0.530090000 0.298380000 F 0.661150000 0.530090000 0.706260000 F 0.628500000 0.028400000 0.706260000 F 0.210350000 0.307530000 0.706260000 F 0.128500000 0.837620000 1.710890000 F -0.289650000 0.558500000 1.710890000 F 0.161150000 0.335930000 1.710890100 F -0.161150000 0.335930000 1.303010000 F -0.128500000 0.837620000 1.303010000 F 0.289650000 0.558500000 1.303010000 K_POINTS automatic 8 8 8 1 1 1 還有個(gè)問題就是:將mix_beta參數(shù)由0。7D修改為0.1D后,out文件中仍然顯示位0.7000請問大家這是怎么回事? [ Last edited by didi5158 on 2010-7-29 at 09:20 ] |


金蟲 (小有名氣)
金蟲 (小有名氣)
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