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langren24

新虫 (小有名气)

[求助] VASP计算失败求助!

最近用VASP计算体系的dos,总是会出现计算失败,查看VASP.out和OUTCAR.out里出现了下面的warning,请帮忙解读一下!

WARNING: small aliasing (wrap around) errors must be expected
FFT: planning ...(           1 )
reading WAVECAR
the WAVECAR file was read sucessfully
WARNING: dimensions on CHGCAR file are different
initial charge from wavefunction


trying to continue reading WAVECAR, but it might fail
WARNING: stress and forces are not correct
POSCAR, INCAR and KPOINTS ok, starting setup
WARNING: small aliasing (wrap around) errors must be expected


WARNING: aliasing errors must be expected set NGX to  30 to avoid them
WARNING: aliasing errors must be expected set NGY to  30 to avoid them
NGZ is ok and might be reduce to  24
aliasing errors are usually negligible using standard VASP settings
and one can safely disregard these warnings
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langren24

新虫 (小有名气)

引用回帖:
2楼: Originally posted by 贺仪 at 2011-09-02 15:13:47:
你的INCAR里的参数变化了吧?除了ICHARGE还有其他的吧?还有你的k点数是否变化?

K点数怎么知道是否变化了啊,我的K点都是固定没变的啊!
3楼2011-09-02 16:15:27
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贺仪

铁杆木虫 (著名写手)

【答案】应助回帖


langren24(金币+2): 2011-09-02 16:14:07
zzy870720z(金币+1): 鼓励交流 2011-09-03 17:23:47
你的INCAR里的参数变化了吧?除了ICHARGE还有其他的吧?还有你的k点数是否变化?
嘟啦啦嘟啦啦嘟
2楼2011-09-02 15:13:47
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贺仪

铁杆木虫 (著名写手)

引用回帖:
3楼: Originally posted by langren24 at 2011-09-02 16:15:27:
K点数怎么知道是否变化了啊,我的K点都是固定没变的啊!

用了多少k点?KPOINTS里面的内容
嘟啦啦嘟啦啦嘟
4楼2011-09-02 20:05:52
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langren24

新虫 (小有名气)

引用回帖:
4楼: Originally posted by 贺仪 at 2011-09-02 20:05:52:
用了多少k点?KPOINTS里面的内容

Automatic mesh
0
Monkhorst Pack
  5  5  7
  0.  0.  0.
5楼2011-09-03 15:58:21
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