Minimization of replicated simulation cell

Dear LAMMPS users,
I had an unit cell which I minimized using,
minimize 1.0e-8 1.0e-8 10000 10000

The stopping criteria for minimization was energy tolerance.
Now, I replicated the same unit cell 3x2x2 times using the command,
replicate 3 2 2
and performed minimization using the same parameters mentioned above.
However, the replicated structure is not getting minimized and stopping criteria now is ‘max. iterations reached’.
I tried to increase no. of iterations and reduce the tolerence limits. But, it is of no use.
Can anyone suggest how to overcome this issue.
I am not able to understand why a replicated structure is not performing as the unit cell does.
Is there anything wrong that I am doing while trying to generate a bigger simulation box?
Any suggestions on this would be of great help.
Thanks in advance

With regards,

Sindu.

If your system is out-of-equilibrium and you make it bigger,

it make take longer to minimize, Maybe you should minimize

the small structure, then replicate. Then the large structure

is either already minimized or pretty close.

Steve