Error:Fix bond/create needs ghost atoms from further away

Hello,everyone
I used fix bond/create command to create new bond of C-N during Crosslinking procedure.
But i met a strange Error:
Error:Fix bond/create needs ghost atoms from further away
I can’t get it in the Manual and I really don’t know what does ghost atoms mean and what shall i do to modify this error.
could anyone give me some advices?
Thanks!

Kang

I used fix bond/create command to create new bond of C-N during
Crosslinking procedure.

But i met a strange Error:

ErrorFix bond/create needs ghost atoms from further away

I can't get it in the Manual and I really don't know what does ghost
atoms mean and what shall i do to modify this error.

could anyone give me some advices?

You need to increase the communication cutoff, so that atoms that would not be
included as ghost are transmitted across CPU boundaries
http://lammps.sandia.gov/doc/comm_modify.html

comm_modify cutoff XYZ

where XYZ is such that atoms one "possible bond" away will be present on a CPU.
If you use angular, dihedrals and impropers with fix bond create this will
effectively increase the value for XYZ.

Regards,

Pierre