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qishiyy

银虫 (小有名气)

[求助] THE INPUT BASIS SET CONTAINS APPROXIMATE LINEAR DEPENDENCE.

算能量分解,怎么老是这个错误,
THE INPUT BASIS SET CONTAINS APPROXIMATE LINEAR DEPENDENCE.
THE SMALLEST EIGENVALUE OF THE OVERLAP MATRIX IS   7.081188E-06
THERE ARE    1 EIGENVALUES LESS THAN QMTTOL=  1.00E-05
EIGENVECTORS BELOW -QMTTOL- ARE DROPPED FROM THE MO SPACE,
IN ORDER TO ELIMINATE THE APPROXIMATE LINEAR DEPENDENCE.

THIS WILL MOST LIKELY CHANGE THE ENERGY ON THE ORDER OF TENS OF MICROHARTREES,
DEPENDING ON THE NUMBER OF ORBITALS REMOVED.  THE VALUE OF QMTTOL CAN BE
CHANGED IN $CONTRL: JOBS WITH EIGENVALUES BELOW 1.0E-07 PROBABLY WON'T
CONVERGE.  EIGENVALUES BETWEEN 1.0E-07 AND 1.0E-06 MAY REQUIRE LOOSENING OF
THE DENSITY CRITERION (CONV IN $SCF), MORE ACCURATE INTEGRAL EVALUATION
(ICUT=11 IN $CONTRL), MORE ACCURATE DIRECT SCF FOCK MATRIX
CONSTRUCTION (FDIFF=.FALSE. IN $SCF), OR CHANGING THE SCF CONVERGER
(DIIS=.TRUE. IN $SCF).
NO $VEC INPUT FOUND - STOP
EXECUTION OF GAMESS TERMINATED -ABNORMALLY- AT Sun Apr  1 18:16:20 2012
              5094020  WORDS OF DYNAMIC MEMORY USED
STEP CPU TIME =     0.04 TOTAL CPU TIME =        0.2 (    0.0 MIN)
TOTAL WALL CLOCK TIME=        0.2 SECONDS, CPU UTILIZATION IS  77.27%
DDI Process 0: error code 911
ddikick.x: application process 0 quit unexpectedly.
ddikick.x: Fatal error detected.
The error is most likely to be in the application, so check for
input errors, disk space, memory needs, application bugs, etc.
ddikick.x will now clean up all processes, and exit...
ddikick.x: Sending kill signal to DDI processes.
ddikick.x: Execution terminated due to error(s).
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beefly

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zhou2009: 金币+5 2012-04-05 16:35:39
基组线性依赖问题。如果原子排列比较紧凑的团簇用了过于弥散的基函数,容易导致基组线性依赖问题。这个问题还与积分精度参数,以及程序的积分算法有关。所以往往一个程序能处理的基组,放到另一个程序就发生问题。在常用程序中,相同基组发生线性依赖问题从严重到轻微的一般顺序是:CFour > GAMESS ~ NWChem > Gaussian > Molpro ~ Molcas

如果提高积分精度不解决问题,就要删除发生问题的个别基函数,或者换精度更高的程序。
beefly《西太平洋大学现代英汉词典》[bi:fli]牛肉一般地
2楼2012-04-03 11:17:45
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qishiyy

银虫 (小有名气)

引用回帖:
2楼: Originally posted by beefly at 2012-04-03 11:17:45:
基组线性依赖问题。如果原子排列比较紧凑的团簇用了过于弥散的基函数,容易导致基组线性依赖问题。这个问题还与积分精度参数,以及程序的积分算法有关。所以往往一个程序能处理的基组,放到另一个程序就发生问题。 ...

如何提高积分精度呢
3楼2012-04-05 10:05:06
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galaxyqtm

金虫 (小有名气)

【答案】应助回帖

感谢参与,应助指数 +1
引用回帖:
3楼: Originally posted by qishiyy at 2012-04-05 10:05:06:
如何提高积分精度呢

ICUT   = n     integrals less than 10.0**(-n) are not
               saved on disk. (default = 9).  Direct
               SCF will calculate to a cutoff 1.0d-10
               or 5.0d-11 depending on FDIFF=.F. or .T.
4楼2012-04-05 10:40:30
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qishiyy

银虫 (小有名气)

引用回帖:
4楼: Originally posted by galaxyqtm at 2012-04-05 10:40:30:
ICUT   = n     integrals less than 10.0**(-n) are not
               saved on disk. (default = 9).  Direct
               SCF will calculate to a cutoff 1.0d-10
               or 5.0d-11 depend ...

又出现了这种错误         
***** FAILURE TO LOCATE STATIONARY POINT, SCF HAS NOT CONVERGED
     UPDATED HESSIAN, GEOMETRY, AND VECTORS WILL BE PUNCHED FOR RESTART
5楼2012-04-05 16:21:44
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