Re: [gmx-users] CCl4 parameters

2008-11-02 Thread Justin A. Lemkul

I'll repeat my earlier question:

What actually corresponds to line 25?  What would the manual indicate about the 
contents of such a line?


That is for you to tell us, so we don't have to sort through your topology.  You 
have everything intact, including line spacing (which doesn't necessarily 
translate through email).


If you can provide the exact line, what it contains, and which section of the 
topology of which it is a component (pairs, angles, dihedrals, etc) then maybe 
someone can provide useful advice.


If you want free help, make it easy for us to help you.

-Justin

Hongyan Xiao wrote:

Hi, Justin,
 
This is my CCl4.top file.
 
;

;   File 'ccl4.top' was generated
;   By user: onbekend (0)
;   On host: onbekend
;   At date: Thu Oct  9 08:18:55 2008
;
;   This is your topology file
;   "God is a DJ" (Faithless)
;
; Include forcefield parameters
#include "ffG53a6.itp"
#include "ccl4.itp"

; Include generic topology for ions
#include "ions.itp"
[ system ]
; Name
Pure CL4
[ molecules ]
; Compound#mols
CL4169
~

 What does it lose? Please give me further suggestion. Thanks again.
 
H. Y. Xiao





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Justin A. Lemkul
Graduate Research Assistant
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin


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[gmx-users] CCl4 parameters

2008-11-02 Thread Hongyan Xiao
Hi, Justin,

This is my CCl4.top file.

;
;   File 'ccl4.top' was generated
;   By user: onbekend (0)
;   On host: onbekend
;   At date: Thu Oct  9 08:18:55 2008
;
;   This is your topology file
;   "God is a DJ" (Faithless)
;
; Include forcefield parameters
#include "ffG53a6.itp"
#include "ccl4.itp"

; Include generic topology for ions
#include "ions.itp"
[ system ]
; Name
Pure CL4
[ molecules ]
; Compound#mols
CL4169
~

 What does it lose? Please give me further suggestion. Thanks again.

H. Y. Xiao
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Re: [gmx-users] CCl4 parameters problem

2008-11-02 Thread Justin A. Lemkul



Hongyan Xiao wrote:

Hi, all gmx-users,
 
I obtained the gromos96.1 itp file of CCl_ 4 from the PRODRG program and 
I modified it to agree with the ffG53a6.itp force field parameters. 
Please see the following,
 
[ moleculetype ]

; Name nrexcl
CL4   3
 
[ atoms ]

;nr   type   resnr resid  atom  cgnr   charge mass
 1  CLCL4  1  CL4 CL1 1   -0.062  35.4530
 2   CCL4  1  CL4  CT  10.248  12.0110
 3  CLCL4  1  CL4 CL4 1   -0.062  35.4530
 4  CLCL4  1  CL4 CL2 1   -0.062  35.4530
 5  CLCL4  1  CL4 CL3 1   -0.062  35.4530
 
[ bonds ]

; ai   aj  fuc0, c1, ...
   2   1   20.176   810.00.176   810.0 ;CT  CL1
   2   3   20.176   810.00.176   810.0 ;CT  CL4
   2   4   20.176   810.00.176   810.0 ;CT  CL2
   2   5   20.176   810.00.176   810.0 ;CT  CL3
 
[ pairs ]

; ai   aj  fuc0, c1, ...
 
[ angles ]

; ai   aj  ak  fu c0, c1, ...
   1   2   3   2109.5618.0109.5618.0 ;   CL1   
CT  CL4
   1   2   4   2109.5618.0109.5618.0 ;   CL1   
CT  CL2
   1   2   5   2109.5618.0109.5618.0 ;   CL1   
CT  CL3
   3   2   4   2109.5618.0109.5618.0 ;   CL4   
CT  CL2
   3   2   5   2109.5618.0109.5618.0 ;   CL4   
CT  CL3
   4   2   5   2109.5618.0109.5618.0 ;   CL2   
CT  CL3
 
[ dihedrals ]

; ai   aj  ak  al   fuc0, c1, m, ...
   2   1   3   4   2  35.3  334.835.3  334.8   ; impCT  
CL1   CL4  CL2
 
However, when I ran the grompp program, it pointed out the following the 
warning
 
WARNING 1 [file ccl4.top, line 25]:

  Too few parameters on line (source file toppush.c, line 1499)
 
I had a check the CCl_4 parameters again and did not find the parameter 
lost. I want to know why the warning occurs?
 


If you're working with the .top, what you've shown is not complete (at the very 
least, it is missing a call to #include "ffG53a6.itp."  What actually 
corresponds to line 25?  What would the manual indicate about the contents of 
such a line?


-Justin


I hope for your help! Thanks!
 
H. Y. Xiao


 





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--


Justin A. Lemkul
Graduate Research Assistant
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin


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[gmx-users] CCl4 parameters problem

2008-11-02 Thread Hongyan Xiao
Hi, all gmx-users,
 
I obtained the gromos96.1 itp file of CCl4 from the PRODRG program and I 
modified it to agree with the ffG53a6.itp force field parameters. Please see 
the following,
 
[ moleculetype ]
; Name nrexcl
CL4  3
 
[ atoms ]
;   nr  type  resnr resid  atom  cgnr   charge mass
 1 CLCL4 1  CL4 CL1 1   -0.062  35.4530
 2  CCL4 1  CL4  CT 10.248  12.0110
 3 CLCL4 1  CL4 CL4 1   -0.062  35.4530
 4 CLCL4 1  CL4 CL2 1   -0.062  35.4530
 5 CLCL4 1  CL4 CL3 1   -0.062  35.4530
 
[ bonds ]
; ai  aj  fuc0, c1, ...
   2   1   20.176   810.00.176   810.0 ;CT  CL1
   2   3   20.176   810.00.176   810.0 ;CT  CL4
   2   4   20.176   810.00.176   810.0 ;CT  CL2
   2   5   20.176   810.00.176   810.0 ;CT  CL3
 
[ pairs ]
; ai  aj  fuc0, c1, ...
 
[ angles ]
; ai  aj  ak  fuc0, c1, ...
   1   2   3   2109.5   618.0109.5   618.0 ;   CL1   CT  CL4
   1   2   4   2109.5   618.0109.5   618.0 ;   CL1   CT  CL2
   1   2   5   2109.5   618.0109.5   618.0 ;   CL1   CT  CL3
   3   2   4   2109.5   618.0109.5   618.0 ;   CL4   CT  CL2
   3   2   5   2109.5   618.0109.5   618.0 ;   CL4   CT  CL3
   4   2   5   2109.5   618.0109.5   618.0 ;   CL2   CT  CL3
 
[ dihedrals ]
; ai  aj  ak  al  fuc0, c1, m, ...
   2   1   3   4   2 35.3  334.8   35.3  334.8   ; impCT  CL1  
CL4  CL2
 
However, when I ran the grompp program, it pointed out the following the 
warning 
 
WARNING 1 [file ccl4.top, line 25]:
  Too few parameters on line (source file toppush.c, line 1499)
 
I had a check the CCl4 parameters again and did not find the parameter lost. 
I want to know why the warning occurs?
 
I hope for your help! Thanks!
 
H. Y. Xiao

 
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