Hello,
I am working with LIGGGHTS 3.5.0 and I modified my dump files so I get a new line in the header with the timestep of my simulation (see below). It is easier for my postprocessing where a Python program comes and reads directly my timestep.
dump final all custom 1 postLoading/drumLoadingFinal_*.dump id type x y z vx vy vz fx fy fz omegax omegay omegaz radius density
dump_modify final pad 8 sort id label TIMESTEP_${timestepPerso}
However, when I want to convert my dump file in vtk with the command lpp, it doesn't work anymore. I get the message :
starting LIGGGHTS memory optimized parallel post processing
chunksize: 1 --> 1 files are processed per chunk. If you run out of memory reduce chunksize.
Working with 4 processes...
calculating chunks 1 - 1 of 1
dump scaling status is unknown
wrote 1 granular snapshots in VTK format
time needed: 0.50120806694 sec
but it doesn't create any vtk file. I tried to look in the script lpp.py to see if I can solve the problem, but I didn't see why this error occured. If I delete the two lines in my dump file generated by the dump_modify label, the command lpp works fine... Is there a way to convert my dump file in vtk by keeping this modification in the header?
Thanks a lot
Have a good day
Christine