[gmx-users] error during minimization

[Shine A]

Sir,

   I am studying the dynamics of membrane proteins using KALP-15 in DPPC.
But during minimization getting error like this..

    There is no domain decomposition for 4 nodes that is compatible with
the given box and a minimum cell size of 18.5346 nm
   Change the number of nodes or mdrun option -rdd
    Look in the log file for details on the domain decomposition

    why it happens? can you give me a solution for this?