[mpich-discuss] a problem of using mpich2 with LAMMPS

[Z.Y.Qiu]

Hi, everyone. I link mpich2-1.3.1 installed under my own directory on a
Linux service to LAMMPS.
I run my LAMMPS task in parallel by a PBS script. In LAMMPS log file, "2 by
2 by 2 MPI proces-
sor grid" is output which means it run in parallel. But the speed has no
change, comparing to  that
in serial way.  Thank u for your time and appreciating any help.
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