I did again two group of tests, as follows.  But I don't know how to submit a bugzilla.


Test 1.

g_energy -f md3.edr

Energy                      Average       RMSD     Fluct.      Drift  Tot-Drift
-------------------------------------------------------------------------------
Bond                        1370.47     64.952    64.8116  0.0295732    14.7866
Angle                       3541.69    99.9164    99.9059   0.0100593    5.02964
LJ-(SR)                    -3601.66    151.232    131.574  -0.516572   -258.287
Coulomb-(SR)             -10883    143.406    134.139  -0.351347   -175.674
Potential                  -30962.9     304.081    265.607    -1.0257    -512.85
Total-Energy             -22436.1    287.863    245.635   -1.03989   -519.945


g_energy -nmol 115 -f md3.edr

Energy                      Average       RMSD     Fluct.      Drift  Tot-Drift
-------------------------------------------------------------------------------
Bond                        11.9171     0.5648          0  0.0295732    14.7866
Angle                       30.7973   0.868838          0  0.0100593    5.02964
LJ-(SR)                    -3601.66    151.232    131.574  -0.516572   -258.287
Coulomb-(SR)             -10883    143.406    134.139  -0.351347   -175.674
Potential                  -269.242     2.64418          0    -1.0257    -512.85
Total-Energy             -22436.1    287.863    245.635   -1.03989   -519.945

Test 2.

g_energy -f md3.edr

Energy                      Average       RMSD     Fluct.      Drift  Tot-Drift
-------------------------------------------------------------------------------
Bond                        27255.4    288.517     287.731   0.147486    73.7433
Angle                       30206.8    299.196    299.151 -0.0361126   -18.0563
LJ-(SR)                    -27021.1    1153.88    1015.89    -3.7911   -1895.55
Coulomb-(SR)            -116585    1327.11    1120.39   -4.92805   -2464.03
Potential                   -271448    2889.94    2444.54   -10.6792   -5339.61
Total-Energy              -183054    2912.13    2478.91    -10.588   -5293.99


g_energy -nmol 981 -f md3.edr

Energy                      Average       RMSD     Fluct.      Drift  Tot-Drift
-------------------------------------------------------------------------------
Bond                        27.7833   0.294105           0   0.147486    73.7433
Angle                       30.7919   0.304991          0 -0.0361126   -18.0563
LJ-(SR)                    -27021.1    1153.88    1015.89    -3.7911   -1895.55
Coulomb-(SR)          -116585    1327.11    1120.39   -4.92805   -2464.03
Potential                 -276.705    2.94591          0   -10.6792   -5339.61
Total-Energy             -183054    2912.13    2478.91    -10.588   -5293.99



2006/11/9, David van der Spoel <[EMAIL PROTECTED]>:
Qiao Baofu wrote:
>     Thanks.
>
>
>
> but the g_energy -nmol can only give the Bond,Angle data divided by the
> nmol, for the Proper-Dih. LJ, Coulomb, Potential, Total-Energy, g_energy
> -nmol 981 gives the same result as without -nmol 981, in which 981 is
> the number of molecules.
>
> I am using Gromacs 3.3.1.
>
If this is reproducible then please submit a bugzilla.

--
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
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--
Sincerely yours,
**********************************************
Baofu Qiao, PhD
Frankfurt Institute for Advanced Studies
Max-von-Laue-Str. 1
60438 Frankfurt am Main, Germany TEL:+49-69-7984-7529
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