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<HTML>
<CENTER><A HREF = "http://lammps.sandia.gov">LAMMPS WWW Site</A> - <A HREF = "Manual.html">LAMMPS Documentation</A> - <A HREF = "Section_commands.html#comm">LAMMPS Commands</A>
</CENTER>
<HR>
<H3>reset_timestep command
</H3>
<P><B>Syntax:</B>
</P>
<PRE>reset_timestep N
</PRE>
<UL><LI>N = timestep number
</UL>
<P><B>Examples:</B>
</P>
<PRE>reset_timestep 0
reset_timestep 4000000
</PRE>
<P><B>Description:</B>
</P>
<P>Set the timestep counter to the specified value. This command
normally comes after the timestep has been set by reading it in from a
file or a previous simulation advanced the timestep.
</P>
<P>The <A HREF = "read_data.html">read_data</A> and <A HREF = "create_box.html">create_box</A>
commands set the timestep to 0; the <A HREF = "read_restart.html">read_restart</A>
command sets the timestep to the value it had when the restart file
was written.
</P>
<P><B>Restrictions:</B> none
</P>
<P>This command cannot be used when a dump file is defined via the
<A HREF = "dump.html">dump</A> command and has already been written to. It also
cannot be used when a <A HREF = "restart.html">restart frequency</A> has been set,
and a restart file has already been written. This is because the
changed timestep can mess up the planned timestep for the next file
write. See the <A HREF = "undump.html">undump</A> command or <A HREF = "restart.html">restart
0</A> command for info on how to turn off these definitions
if necessary. New specifications for dump and restart files can be
given after the reset_timestep command is used.
</P>
<P>This command cannot be used when any fixes are defined that keep track
of time or the timestep in order to perform time-dependent operations.
Examples include the "ave" or "wall" fixes such as <A HREF = "fix_ave_spatial.html">fix
ave/spatial</A> or <A HREF = "fix_wall_lj126.html">fix
wall/lj126</A>, and also <A HREF = "fix_indent.html">fix
indent</A>. The wall and indeter fixes allow for a
velocity or other time-dependent parameter to be specified, which
would be messed up by resetting the timestep.
</P>
<P>Restting the timestep will clear the flags for <A HREF = "compute.html">computes</A>
that may have calculated some quantity from a previous run. This
means that quantity cannot be accessed by a variable in between runs
until a new run is performed. See the <A HREF = "variable.html">variable</A>
command for more details.
</P>
<P><B>Related commands:</B> none
</P>
<P><B>Default:</B> none
</P>
</HTML>
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