[gmx-users] Cannot find position restraint file

[Neena Susan Eappen]

Hello gromacs users,

For the equilibration phase 1, an error message came up following this command:

gmx grompp -f nvt.mdp -c em.gro -p topol.top -o nvt.tpr
Error: Cannot find position restraint file restraint.gro (option -r)

I do not have a posre.gro file, only posre.itp file. I don't understand this, any insight would be appreciated.

Thank you,
Neena