[gmx-users] How to Set Boundary in Gromacs

[ANAND AMITKUMAR DHARIA]

Hello,

I want to create many nanotubes periodically by extending one hexagonal
tube in three dimensions. I am wondering if it is possible, or necessary,
to set boundaries in Gromacs. In NAMD we can input the boundary for
periodicity as a .bound file and set the periodicity to xyz using the bound
file. In Gromacs does such a thing exist, or does setting pbc to xyz
automatically do this?

(Sorry in advance if this is hard to interpret what I am saying.)

Thanks,
Anand