Syntax:
communicate style keyword value ...
group value = group-ID = only communicate atoms in the group
Examples:
communicate multi communicate multi group solvent
Description:
This command sets the style of inter-processor communication that occurs each timestep as atom coordinates and other properties are exchanged between neighboring processors and stored as properties of ghost atoms.
The default style is single which means each processor acquires information for ghost atoms that are within a single distance from its sub-domain. The distance is the maximum of the neighbor cutoff for all atom type pairs.
For many systems this is an efficient algorithm, but for systems with widely varying cutoffs for different type pairs, the multi style can be faster. In this case, each atom type is assigned its own distance cutoff for communication purposes, and fewer atoms will be communicated. See the neighbor multi command for a neighbor list construction option that may also be beneficial for simulations of this kind.
The group option will limit communication to atoms in the specified group. This can be useful for models where no ghost atoms are needed for some kinds of particles. All atoms (not just those in the specified group) will still migrate to new processors as they move. The group specified with this option must also be specified via the atom_modify first command.
Restrictions: none
Related commands:
Default:
The default settings are style = single and group = all.