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ywfsxh

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[交流] 【求助】GAMESS: spin contamination in ORMAS and segmentation fault

I try to calculate the ORMAS-CI of Oxygen molecular ion, below is my input file, when I use a simple basis N6-31, I find there are spin contamination in the results, when I choose more orbitals in the initial ROHF calculation, there will be a segmentation fault. I am not sure whether there is any error in my input file, or this is the problem of the code? Any suggestion is welcome. Thanks in advance!

Weifeng

$CONTRL SCFTYP=none CITYP=ORMAS RUNTYP=energy
  MULT=2 icharg=1 $END
!$SYSTEM TIMLIM=525600 MEMORY=2000000 $END
! $basis gbasis=n31 ngauss=6 $end
$guess guess=moread norb=18 $end
! $ciinp npflg(2)=2 $end
$CIDET ncore=2 nact=8 nels=11
nstate=10 PRTTOL=0.0  $END

$ormas nspace=1 mstart(1)=3 mine(1)=11
      maxe(1)=11 $end

$DATA
OXYGEN MOLECULE
C1    0
OXYGEN    8.0    -0.5613500000    0.0000000000    0.0000000000
N31    6

OXYGEN    8.0    0.5613500000    0.0000000000    0.0000000000
N31    6

$END
--- OPEN SHELL ORBITALS --- GENERATED AT Wed Mar 30 17:39:13 2011
OXYGEN MOLECULE
E(ROHF)=    -149.0464411711, E(NUC)= 30.1659784015, 8 ITERS
$VEC

----------------------------------------------------------------
SPIN CONTAMINATION

CI EIGENVECTORS WILL BE LABELED IN GROUP=C1
PRINTING CI COEFFICIENTS LARGER THAN  0.000000

STATE 1  ENERGY=    -149.1107026613  S=  0.53  SZ=  0.50  SPACE SYM=A

---------------------------------------------------------------------

SEGMENTATION FAULT

CHOOSING SEGMENTED PARTIAL TRANSFORMATION...
PASS # 1 TOOK       0.05 SECONDS.
PASS # 2 TOOK       0.06 SECONDS.
TOTAL NUMBER OF TRANSFORMED 2E- INTEGRALS KEPT =       154
... END OF INTEGRAL TRANSFORMATION ...
STEP CPU TIME =    0.14 TOTAL CPU TIME =       0.4 ( 0.0 MIN)
TOTAL WALL CLOCK TIME=       0.4 SECONDS, CPU UTILIZATION IS  97.62%
DDI Process 0: trapped a segmentation fault (SIGSEGV).

   --------------------------------------------------
               DIRECT DETERMINANT ORMAS-CI
            PROGRAM WRITTEN BY JOE IVANIC
   --------------------------------------------------
EXTRA ORMAS STORAGE REQUIRES             222466 WORDS
(EXTRA ORMAS STORAGE INCLUDES THAT FOR MXXPAN = 20)
TOTAL ORMAS CALCULATION REQUIRES          253453 WORDS

INITIAL ORMAS VECTOR GUESS TIME :       0.1
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).
unset echo
----- accounting info -----

[ Last edited by ywfsxh on 2011-3-31 at 17:17 ]

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1楼 2011-03-13 16:42:21

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beefly

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★
小木虫(金币+0.5):给个红包，谢谢回帖
ywfsxh(金币+2): 2011-04-19 16:22:22

可能是初始轨道不好，试试闭壳层O2的HF计算，或者O2＋的CASSCF计算

另一个原因可能是nstate=10太大，需要先做10个根的CASSCF

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13楼2011-04-18 22:14:58

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ywfsxh

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引用回帖:

Originally posted by ywfsxh at 2011-03-13 16:42:21:
我想计算两个态之间的transition moments，可是计算出错，也没有提示，哪位高手帮忙看一下input file，谢谢？同样的input file，如果 operat=hso1，或者hso2，程序就可以正常运行？这是为什么啊？是guess wavefun ...

哪位大侠指教一下啊！谢谢！

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2楼2011-03-14 21:42:46

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