[gmx-users] Decane

David van der Spoel spoel at xray.bmc.uu.se
Mon Aug 29 23:22:29 CEST 2005


On Mon, 2005-08-29 at 19:04 +0100, M.Naser wrote:
> Hi David,
> 
> Still crashing. I tried even genconf -dist 2 2 2.
Check your topology (or try attached from GROMACS test set).
> 
> With regards,
> 
> Abu
> 
> > On Mon, 2005-08-29 at 17:41 +0100, M.Naser wrote:
> >> Hi David,
> >>
> >> Yes, it was inside the box. I going to try with genconf.
> > the box needs to be 0.4 nm larger than the molecule in all dimensions to
> > prevent bad contacts.
> >>
> >> With regards,
> >>
> >> Abu
> >>
> >> > On Mon, 2005-08-29 at 17:30 +0100, M.Naser wrote:
> >> >> Hi Erik,
> >> >>
> >> >> Thanks for your reply. I was trying to get a decane box of
> >> 730kg/cm^3. I
> >> >> started with dec50.gro file from the pakage. I took just one molecule
> >> >> from
> >> >> the file and put the molecule in reletively bigger box that is 2 2 2
> >> nm
> >> >> using editconf to avoid bad contact. Then, using genbox I fill a box
> >> of
> >> >> 30
> >> >> 30 10 nm with the decane molecule. Then I run mdrun using pressure
> >> >> couple
> >> >> to get the desired density. When I run with constraint after a few ps
> >> >> run,
> >> >> it starts producing a lot of pdb files but when I run with no
> >> constrain
> >> >> it
> >> >> woks perfectly well. By the way, I have  tried with both algorithm :
> >> >> SHAKE
> >> >> and LINCS.
> >> > is the decane molecule completely inside the 2 2 2 box?
> >> > You may want to use genconf rather than genbox.
> >> >>
> >> >> With regards,
> >> >>
> >> >> Abu
> >> >>
> >> >> > Hi,
> >> >> >
> >> >> > That's impossible to say without more information - please post the
> >> >> > explicit error message!
> >> >> >
> >> >> > Cheers,
> >> >> >
> >> >> > Erik
> >> >> >
> >> >> > On Aug 29, 2005, at 5:40 PM, M.Naser wrote:
> >> >> >
> >> >> >> Hi All,
> >> >> >>
> >> >> >> I have been wondering why my simulation of decane crashing with
> >> all-
> >> >> >> bond
> >> >> >> constrain?
> >> >> >>
> >> >> >> Thanks in advance,
> >> >> >>
> >> >> >> Abu
> >> >> >>
> >> >> >>
> >> >> >> __________________________________________________________________
> >> >> >>
> >> >> >> DISCLAIMER:
> >> >> >>
> >> >> >> This e-mail message is subject to http://www.hw.ac.uk/disclaim.htm
> >> >> >> __________________________________________________________________
> >> >> >>
> >> >> >> _______________________________________________
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> >> >> >>
> >> >> >>
> >> >> >
> >> >> > _______________________________________________
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> >> >> >
> >> >>
> >> >>
> >> >>
> >> >> __________________________________________________________________
> >> >>
> >> >> DISCLAIMER:
> >> >>
> >> >> This e-mail message is subject to http://www.hw.ac.uk/disclaim.htm
> >> >> __________________________________________________________________
> >> >>
> >> >> _______________________________________________
> >> >> gmx-users mailing list
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> >> > --
> >> > David.
> >> > ________________________________________________________________________
> >> > David van der Spoel, PhD, Assoc. Prof., Molecular Biophysics group,
> >> > Dept. of Cell and Molecular Biology, Uppsala University.
> >> > Husargatan 3, Box 596,          75124 Uppsala, Sweden
> >> > phone:  46 18 471 4205          fax: 46 18 511 755
> >> > spoel at xray.bmc.uu.se    spoel at gromacs.org
> >> http://xray.bmc.uu.se/~spoel
> >> > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> >> >
> >> >
> >> > _______________________________________________
> >> > gmx-users mailing list
> >> > gmx-users at gromacs.org
> >> > http://www.gromacs.org/mailman/listinfo/gmx-users
> >> > Please don't post (un)subscribe requests to the list. Use the
> >> > www interface or send it to gmx-users-request at gromacs.org.
> >> >
> >>
> >>
> >>
> >> __________________________________________________________________
> >>
> >> DISCLAIMER:
> >>
> >> This e-mail message is subject to http://www.hw.ac.uk/disclaim.htm
> >> __________________________________________________________________
> >>
> >> _______________________________________________
> >> gmx-users mailing list
> >> gmx-users at gromacs.org
> >> http://www.gromacs.org/mailman/listinfo/gmx-users
> >> Please don't post (un)subscribe requests to the list. Use the
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> > --
> > David.
> > ________________________________________________________________________
> > David van der Spoel, PhD, Assoc. Prof., Molecular Biophysics group,
> > Dept. of Cell and Molecular Biology, Uppsala University.
> > Husargatan 3, Box 596,          75124 Uppsala, Sweden
> > phone:  46 18 471 4205          fax: 46 18 511 755
> > spoel at xray.bmc.uu.se    spoel at gromacs.org   http://xray.bmc.uu.se/~spoel
> > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> >
> >
> > _______________________________________________
> > gmx-users mailing list
> > gmx-users at gromacs.org
> > http://www.gromacs.org/mailman/listinfo/gmx-users
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> >
> 
> 
> 
> __________________________________________________________________
> 
> DISCLAIMER:
> 
> This e-mail message is subject to http://www.hw.ac.uk/disclaim.htm
> __________________________________________________________________
> 
> _______________________________________________
> gmx-users mailing list
> gmx-users at gromacs.org
> http://www.gromacs.org/mailman/listinfo/gmx-users
> Please don't post (un)subscribe requests to the list. Use the 
> www interface or send it to gmx-users-request at gromacs.org.
-- 
David.
________________________________________________________________________
David van der Spoel, PhD, Assoc. Prof., Molecular Biophysics group,
Dept. of Cell and Molecular Biology, Uppsala University.
Husargatan 3, Box 596,          75124 Uppsala, Sweden
phone:  46 18 471 4205          fax: 46 18 511 755
spoel at xray.bmc.uu.se    spoel at gromacs.org   http://xray.bmc.uu.se/~spoel
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

-------------- next part --------------
#define _FF_GROMACS
#define _FF_GROMACS1

[ defaults ]
; nbfunc	comb-rule	gen-pairs	fudgeLJ	fudgeQQ
  1		1		no		1.0	1.0

[ atomtypes ]
;name        mass      charge   ptype            c6           c12
  CH3    15.03500       0.000       A   0.88765E-02   0.26150E-04
  CH2    14.02700       0.000       A   0.90975E-02   0.35333E-04
   OW    15.99940       0.000       A   0.26171E-02   0.26331E-05 1 2 3
   HW     1.00800       0.000       A   0.00000E+00   0.00000E+00 4 5 6

[ bondtypes ]
  CH2  CH2    1   0.15300     334720.
  CH3  CH2    1   0.15300     334720.

[ angletypes ]
; i    j    k func       th0         cth
  CH3  CH2  CH2    1   111.000     460.240
  CH2  CH2  CH2    1   111.000     460.240

[ dihedraltypes ]
  CH2  CH2    3   9.2789   12.156  -13.120 -3.0597 26.240 -31.495

[ moleculetype ]
; Name	nrexcl
C10	3

[ atoms ] 
; nr    type   	resnr  	residu  atom  	cgnr	charge
1	CH3	1	C10	C1	1	0.0
2	CH2	1	C10	C2	2	0.0
3	CH2	1	C10	C3	3	0.0
4	CH2	1	C10	C4	4	0.0
5	CH2	1	C10	C5	5	0.0
6	CH2	1	C10	C6	6	0.0
7	CH2	1	C10	C7	7	0.0
8	CH2	1	C10	C8	8	0.0
9	CH2	1	C10	C9	9	0.0
10	CH3	1	C10	C10	10	0.0

[ bonds ]
; i	j
1	2
2	3
3	4
4	5
5	6
6	7
7	8
8	9
9	10

[ angles ]
; i	j	k
1	2	3
2	3	4
3	4	5
4	5	6
5	6	7
6	7	8
7	8	9
8	9	10

[ dihedrals ]
; i	j	k 	l	type
1 	2	3	4	3 9.2789   12.156  -13.120 -3.0597 26.240 -31.495  0 0 0 0 0 0
2	3	4	5	3 9.2789   12.156  -13.120 -3.0597 26.240 -31.495  0 0 0 0 0 0
3	4	5	6	3 9.2789   12.156  -13.120 -3.0597 26.240 -31.495  0 0 0 0 0 0
4	5	6	7	3 9.2789   12.156  -13.120 -3.0597 26.240 -31.495  0 0 0 0 0 0
5	6	7	8	3 9.2789   12.156  -13.120 -3.0597 26.240 -31.495  0 0 0 0 0 0
6	7	8	9	3 9.2789   12.156  -13.120 -3.0597 26.240 -31.495  0 0 0 0 0 0
7	8	9	10	3 9.2789   12.156  -13.120 -3.0597 26.240 -31.495  0 0 0 0 0 0

#ifdef FLEX_SPC
#include "flexspc.itp"
#else
#include "spc.itp"
#endif

[ system ]
Olie op de Golven

[ molecules ]
C10	50
SOL	389
#ifdef BIG
C10	50
SOL	389
C10	50
SOL	389
C10	50
SOL	389
#endif


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