"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c

:link(lws,http://lammps.sandia.gov)
:link(ld,Manual.html)
:link(lc,Section_commands.html#comm)

:line

timestep command :h3

[Syntax:]

timestep dt :pre

dt = timestep size (time units) :ul

[Examples:]

timestep 2.0 
timestep 0.003 :pre

[Description:]

Set the timestep size for subsequent molecular dynamics simulations.
See the "units"_units.html command for a discussion of time units.
The default value for the timestep also depends on the choice of units
for the simulation; see the default values below.

When the "run style"_run_style.html is {respa}, dt is the timestep for
the outer loop (largest) timestep.

[Restrictions:] none

[Related commands:]

"fix dt/reset"_fix_dt_reset.html, "run"_run.html,
"run_style"_run_style.html respa, "units"_units.html

[Default:]

timestep = 0.005 tau for units = lj
timestep = 1.0 fmsec for units = real
timestep = 0.001 psec for units = metal
timestep = 1.0e-8 sec (10 nsec) for units = si or cgs :all(b)