[lammps-users] Ghost Atoms

Hi,

   Can anyone tell me what are ghost atoms and how LAMMPS calculates the number
and positions of ghost atoms at each timestep of simulation run?

Thanks

Gaurav Pranami

Graduate Student
Chemical Engineering Dept.
Iowa State University

Dear List,
    
     I wonder if someone could please help me with the restart2data problem.
    Attached is the restart file that caused restart2data to
give "Segmentation fault" in a Linux machine.
    The version of "lammps" and "restart2data" is Feb23-2007. The Lammps
simulation went fine without any error message. I also attach data file and
input file for help.

   Thanks!

jiwu

prep.restart.5000 (156 KB)

prep.data (109 KB)

prep.bs (1.11 KB)

Hi,

   Can anyone tell me what are ghost atoms and how LAMMPS calculates the number
and positions of ghost atoms at each timestep of simulation run?

http://lammps.sandia.gov/doc/Section_intro.html#1_1
should answer the first part of your question and
reading through the source code, the second.

axel.

Ghost atom are copies of atoms owned by nearby processors
that are appended to the list of atoms a proc owns. The
list of which ones they are is computed each timestep
reneighboring is done.

Steve

It's a bug in how restart files are written for atom style molecular.

Will post a patch this AM. What's your name (for the bug attribution) ?

Steve