Hi LIGGGHTS Users!
I have run into this problem where LIGGGHTS fails to restart in some cases (I guess when the particle-tri contacts are high) and exits with the following error:
Reading restart file ...
orthogonal box = (-0.00065 -0.00072 0) to (0.00065 0.00072 0.002)
1 by 1 by 1 processor grid
2198 atoms
Resetting global state of Fix zwallbottom Style wall/gran/hertz/history from restart file info
Resetting per-atom state of Fix zwallbottom Style wall/gran/hertz/history from restart file info
Importing STL file 'WireAssembly.stl'
Solid body detected in STL file
Growing STL input arrays
Growing STL input arrays
Growing STL input arrays
End of solid body detected in STL file.
WARNING: STL file may be incompatible: One or more vertices outside simulation box
WARNING: Imported mesh contains skewed triangles with a size ratio larger 10
Mesh calculations running. This may take a while...finished!
Import of 17400 triangles completed successfully!
WARNING: Imported mesh contains skewed triangles with a size ratio larger 10
Mesh calculations running. This may take a while...finished!
Resetting global state of Fix cad Style mesh/gran from restart file info
INFO: Growing number of particle-tri contacts out of restart
INFO: Maxmimum number of particle-tri contacts >6 at step 10000000, growing array
/opt/sge6.2/execd_spool/c311-108/job_scripts/38140: line 25: 18074 Segmentation fault (core dumped) $HOME/lmp_tacc < $WORK/in.restart
TACC: Cleaning up after job: 38140
TACC: Done.
Otherwise, it restarts fine as shown below:
Reading restart file ...
orthogonal box = (-0.00065 -0.00072 0) to (0.00065 0.00072 0.002)
1 by 1 by 1 processor grid
2198 atoms
Resetting global state of Fix zwallbottom Style wall/gran/hertz/history from restart file info
Resetting per-atom state of Fix zwallbottom Style wall/gran/hertz/history from restart file info
Importing STL file 'WireAssembly.stl'
Solid body detected in STL file
Growing STL input arrays
Growing STL input arrays
Growing STL input arrays
End of solid body detected in STL file.
WARNING: STL file may be incompatible: One or more vertices outside simulation box
WARNING: Imported mesh contains skewed triangles with a size ratio larger 10
Mesh calculations running. This may take a while...finished!
Import of 17400 triangles completed successfully!
WARNING: Imported mesh contains skewed triangles with a size ratio larger 10
Mesh calculations running. This may take a while...finished!
Resetting global state of Fix cad Style mesh/gran from restart file info
Resetting global state of Fix scrwall Style wall/gran/hertz/history from restart file info
Resetting per-atom state of Fix scrwall Style wall/gran/hertz/history from restart file info
Resetting global state of Fix contacthistory Style contacthistory from restart file info
Resetting per-atom state of Fix contacthistory Style contacthistory from restart file info
Setting up run ...
Memory usage per processor = 14.7777 Mbytes
Step Atoms KinEng 1 Volume
4000001 2198 3.3746353e-13 1.8151167e-13 3.744e-09
...
Can anyone tell how to get around this problem?
Thanks
Som
Somnath | Wed, 03/16/2011 - 10:31
Hi all, I was able to fix the
Hi all,
I was able to fix the problem by increasing DELTA_TRI_CONTACTS in fix_wall_gran.cpp from 6 to 20.
However, I guess, there is a small problem that it was not able to grow automatically as the others ( tri neighbor list etc.).
Thanks
Som
ckloss | Wed, 03/16/2011 - 12:33
Hi Som, this problem is known
Hi Som, this problem is known and will be fixed in the next release (probably next week)
Christoph