[gmx-users] about counterions

Rui Li moonfine at mail.sdu.edu.cn
Mon May 14 16:01:45 CEST 2007

Dear all,
I am new to gmx.
When I run grompp, it prompt:
System has non-zero total charge: 1.172000e+01

The number isn't integer, So how many counterions I should add?
Any reply is appreciated.

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