Dear lammps users,
I have a problem when I launch a simulation using MPICH on 4 machines (24 processors).
The simulation includes carbon atoms (airebo, 5 angstrems sc lattice in gas phase) and argon (5 A sc lattice, also gas, lj potential).
If I start a simulation on 4 machines, it writes an error:
[grid2@…1234… methane.06.03.2009]$ /usr/local/mpich2-1.0.7ver-sock/bin/mpiexec -n 32 /home/grid2/lmp_g++_poems < in.synthesys
LAMMPS (21 May 2008)
Lattice spacing in x,y,z = 5 5 5
Created orthogonal box = (0 0 0) to (105 110 110)
2 by 4 by 4 processor grid
Created 1452 atoms
Created 2904 atoms
Created 1452 atoms
Created 2420 atoms
Created 1936 atoms
2904 atoms in group carbon
7260 atoms in group argon
Setting up run …
rank 23 in job 9 w7.gridzone.ru_46939 caused collective abort of all ranks
exit status of rank 23: killed by signal 11
rank 15 in job 9 w7.gridzone.ru_46939 caused collective abort of all ranks
exit status of rank 15: killed by signal 11
rank 12 in job 9 w7.gridzone.ru_46939 caused collective abort of all ranks
exit status of rank 12: killed by signal 11
rank 2 in job 9 w7.gridzone.ru_46939 caused collective abort of all ranks
exit status of rank 2: killed by signal 11
rank 0 in job 9 w7.gridzone.ru_46939 caused collective abort of all ranks
exit status of rank 0: killed by signal 9
But if I start the same simulation on one machine (8 processors) everything is OK and the simulation works correctly.
Also if I change lattice from 5 A to 10 A, all works at 4 machines too.
Could you say something about this?
Thanks in advance
Konstantin