forked from lijiext/lammps
69 lines
2.2 KiB
Plaintext
69 lines
2.2 KiB
Plaintext
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
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:link(lws,http://lammps.sandia.gov)
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:link(ld,Manual.html)
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:link(lc,Section_commands.html#comm)
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:line
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fix enforce2d command :h3
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fix enforce2d/cuda command :h3
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[Syntax:]
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fix ID group-ID enforce2d :pre
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ID, group-ID are documented in "fix"_fix.html command
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enforce2d = style name of this fix command :ul
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[Examples:]
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fix 5 all enforce2d :pre
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[Description:]
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Zero out the z-dimension velocity and force on each atom in the group.
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This is useful when running a 2d simulation to insure that atoms do
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not move from their initial z coordinate.
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:line
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Styles with a {cuda} suffix are functionally the same as the
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corresponding style without the suffix. They have been optimized to
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run faster, depending on your available hardware, as discussed in
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"Section_accelerate"_Section_accelerate.html of the manual. The
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accelerated styles take the same arguments and should produce the same
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results, except for round-off and precision issues.
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These accelerated styles are part of the USER-CUDA package. They are
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only enabled if LAMMPS was built with that package. See the "Making
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LAMMPS"_Section_start.html#start_3 section for more info.
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You can specify the accelerated styles explicitly in your input script
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by including their suffix, or you can use the "-suffix command-line
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switch"_Section_start.html#start_7 when you invoke LAMMPS, or you can
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use the "suffix"_suffix.html command in your input script.
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See "Section_accelerate"_Section_accelerate.html of the manual for
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more instructions on how to use the accelerated styles effectively.
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:line
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[Restart, fix_modify, output, run start/stop, minimize info:]
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No information about this fix is written to "binary restart
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files"_restart.html. None of the "fix_modify"_fix_modify.html options
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are relevant to this fix. No global or per-atom quantities are stored
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by this fix for access by various "output
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commands"_Section_howto.html#howto_15. No parameter of this fix can
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be used with the {start/stop} keywords of the "run"_run.html command.
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The forces due to this fix are imposed during an energy minimization,
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invoked by the "minimize"_minimize.html command.
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[Restrictions:] none
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[Related commands:] none
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[Default:] none
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