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argo

铁杆木虫 (著名写手)

上善若水

[求助] 关于赝势与自洽计算

近日试了一下,同样的系统,同样的设置,分别使用了五种赝势,弛豫过程都没有问题(结果还没有进行比较),但在做自洽计算时,paw的三个正常结束,us的两个都出现了以下类似的错误(以下内容取自log):
LDA part: xc-table for Ceperly-Alder, standard interpolation
POSCAR, INCAR and KPOINTS ok, starting setup
WARNING: small aliasing (wrap around) errors must be expected
FFT: planning ...(           1 )
reading WAVECAR
rank 4 in job 1  compute-0-10_55469   caused collective abort of all ranks
  exit status of rank 4: killed by signal 11
rank 3 in job 1  compute-0-10_55469   caused collective abort of all ranks
  exit status of rank 3: killed by signal 11

请问可能是什么地方的问题?谢谢【不知道这样描述问题是否合适】
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liliangfang: 金币+2, 谢谢交流 2012-08-10 18:10:50
引用回帖:
8楼: Originally posted by wujing110 at 2012-08-10 14:35:24
我对这个问题也很感兴趣
开始以为是内存的问题
改了K点以后发现出现另外的提示VERY BAD NEWS! internal error in subroutine IBZKPT: Tetrahedron method fails for NKPT<4. NKPT = 1

对于Tetrahedron method需要不可约k点数大于4个,所以解决方法有两个:
1.增大k点,让不可约k点大于4个
或者
2.换一种smear方法,比如高斯方法
10楼2012-08-10 14:50:22
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xyzzz986

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【答案】应助回帖

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感谢参与,应助指数 +1
argo: 金币+5, ★★★很有帮助, 感谢 2012-08-09 19:20:15
liliangfang: 金币+1, 谢谢交流 2012-08-09 21:36:54
看看outcar? oscar里面没啥具体信息。
2楼2012-08-09 17:29:31
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argo

铁杆木虫 (著名写手)

上善若水

引用回帖:
2楼: Originally posted by xyzzz986 at 2012-08-09 17:29:31
看看outcar? oscar里面没啥具体信息。

OUTCAR最后部分如下:
maximum and minimum number of plane-waves per node :   23130  23006

maximum number of plane-waves:   23130
maximal index in each direction:
   IXMAX= 18   IYMAX= 18   IZMAX= 19
   IXMIN=-18   IYMIN=-18   IZMIN=-19

WARNING: aliasing errors must be expected set NGX to  74 to avoid them
WARNING: aliasing errors must be expected set NGY to  74 to avoid them
WARNING: aliasing errors must be expected set NGZ to  78 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)


total amount of memory used by VASP on root node 507413. kBytes
========================================================================

   base      :    30000. kBytes
   nonlr-proj:    24574. kBytes
   fftplans  :    13433. kBytes
   grid      :    59719. kBytes
   one-center:     2239. kBytes
   wavefun   :   377448. kBytes

Broyden mixing: mesh for mixing (old mesh)
   NGX = 37   NGY = 37   NGZ = 39
  (NGX  =108   NGY  =108   NGZ  =120)
  gives a total of  53391 points

OSZICAR为空
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3楼2012-08-09 19:19:55
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argo

铁杆木虫 (著名写手)

上善若水

INCAR中加了
NGX=74
NGY=74
NGZ=78
之后,OUTCAR输出部分:
maximum and minimum number of plane-waves per node :   23130  23006

maximum number of plane-waves:   23130
maximal index in each direction:
   IXMAX= 18   IYMAX= 18   IZMAX= 19
   IXMIN=-18   IYMIN=-18   IZMIN=-19

NGX is ok and might be reduce to  74
NGY is ok and might be reduce to  74
NGZ is ok and might be reduce to  78

serial   3D FFT for wavefunctions
parallel 3D FFT for charge:
    minimum data exchange during FFTs selected (reduces bandwidth)


total amount of memory used by VASP on root node 454216. kBytes
========================================================================

   base      :    30000. kBytes
   nonlr-proj:    73093. kBytes
   fftplans  :    38400. kBytes
   grid      :   122880. kBytes
   one-center:     1119. kBytes
   wavefun   :   188724. kBytes

Broyden mixing: mesh for mixing (old mesh)
   NGX = 37   NGY = 37   NGZ = 39
  (NGX  =160   NGY  =160   NGZ  =160)
  gives a total of  53391 points

OSZICAR仍为空
log为
LDA part: xc-table for Ceperly-Alder, standard interpolation
POSCAR, INCAR and KPOINTS ok, starting setup
FFT: planning ...(           1 )
reading WAVECAR
rank 4 in job 1  compute-0-10_38037   caused collective abort of all ranks
  exit status of rank 4: killed by signal 9
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4楼2012-08-09 19:50:02
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