[gmx-users] Coulomb interactions

[Swarnendu Tripathi]

Hello everyone,

In gromacs when the Coulomb interactions are calculated are they calculated
for the all atom pairs or only for the charged atoms pairs?

If the Coulomb interactions are not calculated only for the charged atoms
then how can I modify the gromacs to do that. In my system I have only 27
charged atoms  and I want gromacs to calculate  the Coulomb interactions
only for these atoms. I am using gromacs 4.0.7.

Thank you,

-Swarnendu
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