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<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>fix nve command
</H3>
<H3>fix nve/cuda command
</H3>
<P><B>Syntax:</B>
</P>
<PRE>fix ID group-ID nve
</PRE>
<UL><LI>ID, group-ID are documented in <A HREF = "fix.html">fix</A> command
<LI>nve = style name of this fix command
</UL>
<P><B>Examples:</B>
</P>
<PRE>fix 1 all nve
</PRE>
<P><B>Description:</B>
</P>
<P>Perform constant NVE integration to update position and velocity for
atoms in the group each timestep. V is volume; E is energy. This
creates a system trajectory consistent with the microcanonical
ensemble.
</P>
<HR>
<P>Styles with a <I>cuda</I> suffix are functionally the same as the
corresponding style without the suffix. They have been optimized to
run faster, depending on your available hardware, as discussed in
<A HREF = "Section_accelerate.html">this section</A> of the manual. The accelerated
styles take the same arguments and should produce the same results,
except for round-off and precision issues.
</P>
<P>These accelerated styles are part of the "user-cuda" package. They
are only enabled if LAMMPS was built with that package. See the
<A HREF = "Section_start.html#start_3">Making LAMMPS</A> section for more info.
</P>
<P>You can specify the accelerated styles explicitly in your input script
by including their suffix, or you can use the <A HREF = "Section_start.html#start_6">-suffix command-line
switch</A> when you invoke LAMMPS, or you can
use the <A HREF = "suffix.html">suffix</A> command in your input script.
</P>
<P>See <A HREF = "Section_accelerate.html">this section</A> of the manual for more
instructions on how to use the accelerated styles effectively.
</P>
<HR>
<P><B>Restart, fix_modify, output, run start/stop, minimize info:</B>
</P>
<P>No information about this fix is written to <A HREF = "restart.html">binary restart
files</A>. None of the <A HREF = "fix_modify.html">fix_modify</A> options
are relevant to this fix. No global or per-atom quantities are stored
by this fix for access by various <A HREF = "Section_howto.html#4_15">output
commands</A>. No parameter of this fix can be
used with the <I>start/stop</I> keywords of the <A HREF = "run.html">run</A> command.
This fix is not invoked during <A HREF = "minimize.html">energy minimization</A>.
</P>
<P><B>Restrictions:</B> none
</P>
<P><B>Related commands:</B>
</P>
<P><A HREF = "fix_nh.html">fix nvt</A>, <A HREF = "fix_nh.html">fix npt</A>
</P>
<P><B>Default:</B> none
</P>
</HTML>
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