[gmx-users] Why Total Energy is positive??

[uki zhu]

Hi, gmx-users,
These days I am trying to do some systems about carbon tubes. And I found
Total Energy of the system is positive  whether Energy Minimization or MD.
The amount of Total Energy is about  E03.

For example,
""
      Step           Time         Lambda
           5000        5.00000        0.00000

   Energies (kJ/mol)
          Morse       G96Angle    Proper Dih.        LJ (SR)   Coulomb (SR)
    5.92521e+02    9.76865e+02    6.24199e+03   -1.72019e+03    0.00000e+00
      Potential    Kinetic En.   Total Energy    Temperature Pressure (bar)
    6.09119e+03    3.32193e+03    9.41312e+03    3.02677e+02    8.29506e-02
""
in a log file.

Is anyone who can help me to solve this problem?

Thanks very much.

uki
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