[lammps-users] Too Many Processors? (UNCLASSIFIED)

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1

Classification: UNCLASSIFIED
Caveats: NONE

Hello everyone,

I'm a new LAMMPS user running on a cluster using PBS. I'm having
trouble getting LAMMPS to run on more than one node (4 processors in my
case). I'm running the example problems that came packaged with the
release. I thought they simply may be too small so I ramped up the
amount of atoms in some of them by making the simulation box bigger.
Still, when I run a job on more than one node I get no dump file and my
log files are empty. Thanks in advance!

  Luis Costa
  Institute for Multiscale Reactive Modeling
  Energetics and Warheads Research and Development
  RDAR-MEE-W, Building 3022, Room 44
  Picatinny, NJ 07806-5000
  COM: 973.724.4236
  DSN: 880.4236
  CELL: 973.668.0044
  FAX: 973.724.4059
  [email protected]...

Classification: UNCLASSIFIED
Caveats: NONE

2

This sounds like an MPI or PBS problem. Any of
the LAMMPS examples can be run a 2 or 4 procs.

Steve