[CPMD-list] MD problem!

=?gb2312?q?Adrain=20Zhou?= adrainzhou at yahoo.com.cn
Tue Jul 15 17:11:05 CEST 2003


Dear all,
 
I met the following problem when performing MD calculation!
 
  367  0.00112    16.6    -294.14844    -294.14379    -294.14267   0.009   26.34
  368  0.00114    16.9    -294.14855    -294.14380    -294.14267   0.009   25.94
  369  0.00115    17.3    -294.14866    -294.14382    -294.14267   0.009   24.05
  370  0.00116    17.6    -294.14877    -294.14383    -294.14267   0.008   25.49
  371  0.00118    18.0    -294.14889    -294.14384    -294.14267   0.008   26.80
  372  0.00119    18.4    -294.14901    -294.14386    -294.14267   0.008   27.22
  373  0.00121    18.8    -294.14913    -294.14387    -294.14267   0.008   25.35
  374  0.00123    19.2    -294.14926    -294.14389    -294.14266   0.008   25.89
  375  0.00124    19.5    -294.14938    -294.14390    -294.14266   0.008   27.72
  376  0.00126    19.9    -294.14951    -294.14392    -294.14265   0.008   25.37
  377  0.00130    20.3    -294.14964    -294.14394    -294.14264   0.008   25.12
  378  0.00135    20.7    -294.14973    -294.14391    -294.14257   0.008   24.31
  379  0.04902    21.0    -294.14982    -294.14392    -294.09491   0.008   26.99
  380*****************    -294.06582 3216785.58973**************   0.008   25.40

 PROGRAM STOPS IN SUBROUTINE DSPEVY| FAILED TO DIAGONALIZE [PROC=   5]
 
In the 379th steps, the electronic temperature becomes very high and the EHAM is not constant. So the timestep may be too long! But I perfom almost the same calculation with the same timestep and EMASS at the same system, the program runs okay! Moreover, the electron can follow the movement of Ion. 
 
Can anyone tell me what's wrong with it?
 
Many thanks in advance!
 
Zhou

 PROGRAM STOPS IN SUBROUTINE DSPEVY| FAILED TO DIAGONALIZE [PROC=   7]

 PROGRAM STOPS IN SUBROUTINE DSPEVY| FAILED TO DIAGONALIZE [PROC=   4]
 



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