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[求助]
vasp做MD
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各位大俠,剛接觸VASP,想用它做一個(gè)表面的MD 共90個(gè)原子,包含72個(gè)金原子,incar如下: SYSTEM=au2-1 PREC=normal EDIFF=0.001 IALGO=48 NWRITE=0 NCORE=8 ENCUT=250 NELECT=5482 ISPIN=1 ISMEAR=-1 NELMIN=8 SIGMA=0.05 NSW=200 LREAL=A LCHARG=F POTIM=0.5 IBRION=0 SMASS>=0 TEBEG=298 剛計(jì)算就跳出,反復(fù)修改incar,一直不知道問(wèn)題在哪里,請(qǐng)大俠指教。 POSCAR, INCAR and KPOINTS ok, starting setup WARNING: small aliasing (wrap around) errors must be expected FFT: planning ...( 16 ) -------------------------------------------------------------------------- mpirun noticed that process rank 0 with PID 16369 on node ln038 exited on signal 9 (Killed). -------------------------------------------------------------------------- The job was finished at Tue Jan 15 10:52:11 CST 2013 -------------------------------------------------------- OURCAR 一直就停在這里: WARNING: aliasing errors must be expected set NGX to 130 to avoid them WARNING: aliasing errors must be expected set NGY to 130 to avoid them WARNING: aliasing errors must be expected set NGZ to 218 to avoid them aliasing errors are usually negligible using standard VASP settings and one can safely disregard these warnings serial 3D FFT for wavefunctions parallel 3D FFT for charge: minimum data exchange during FFTs selected (reduces bandwidth) |
銀蟲(chóng) (小有名氣)
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看了你的 INCAR 是不是做帶電的體系? SMASS>=0 這樣 設(shè)置是不對(duì)的,要給一個(gè)具體的數(shù)值 比如0, 1, 2 這幾個(gè)都是NVT的系綜 不同只處在于 設(shè)置不同的參數(shù),系綜的頻率不一樣,影響系綜和體系的耦合,可以設(shè)置為小數(shù), 使得系綜的頻率和你體系典型的聲子頻率相同或者相近,所謂的的這個(gè)典型的聲子頻率 就是鍵的 震動(dòng)頻率,可以搜索一下找到。 具體設(shè)置為多少,手冊(cè)沒(méi)寫(xiě),如需要的話獎(jiǎng)勵(lì)我了再告訴你哦。 還有你的體系是導(dǎo)體嗎?,如果是的話 這樣的 INCAR還缺少幾個(gè)參數(shù)。 |

銀蟲(chóng) (小有名氣)

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