Simulation freezes in parallel when reading data file

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1

Hello all,

I’m simulating a simple sheet that has only bonds and dihedrals. When I try to run this in parallel with 16 cores, the simulation seems to freeze after the following:

LAMMPS (22 Aug 2018)
New timer settings: style=off mode=nosync timeout=off
Reading data file …
orthogonal box = (-1.06521 -0.615 -10) to (246.064 245.385 10)

A previous post mentioned a similar issue here (although I’m not using change_box):
https://lammps.sandia.gov/threads/msg32027.html

I should note that the simulation always runs fine in serial.

Please find attached the data file, the runfile, the output I get and the file I use to submit the job.

I’d appreciate your comments,

Best,
Jamal

data_graph.dat (1.95 MB)

output (3.77 KB)

runfile (809 Bytes)

send.sh (167 Bytes)

2

Hello all,

I'm simulating a simple sheet that has only bonds and dihedrals. When I try to run this in parallel with 16 cores, the simulation seems to freeze after the following:

LAMMPS (22 Aug 2018)
New timer settings: style=off mode=nosync timeout=off
Reading data file ...
  orthogonal box = (-1.06521 -0.615 -10) to (246.064 245.385 10)

A previous post mentioned a similar issue here (although I'm not using change_box):
https://lammps.sandia.gov/threads/msg32027.html

I should note that the simulation always runs fine in serial.

doesn't happen for me with version 10 October 2018.
what MPI library do you use and what platform are you running on and
what OS and version do you use?

axel.