forked from lijiext/lammps
57 lines
1.3 KiB
Plaintext
57 lines
1.3 KiB
Plaintext
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.. index:: pair_style none
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pair_style none command
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=======================
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Syntax
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""""""
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.. parsed-literal::
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pair_style none
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Examples
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""""""""
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.. parsed-literal::
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pair_style none
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Description
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"""""""""""
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Using a pair style of none means pair forces and energies are not
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computed.
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With this choice, the force cutoff is 0.0, which means that only atoms
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within the neighbor skin distance (see the :doc:`neighbor <neighbor>`
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command) are communicated between processors. You must insure the
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skin distance is large enough to acquire atoms needed for computing
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bonds, angles, etc.
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A pair style of *none* will also prevent pairwise neighbor lists from
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being built. However if the :doc:`neighbor <neighbor>` style is *bin*\ ,
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data structures for binning are still allocated. If the neighbor skin
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distance is small, then these data structures can consume a large
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amount of memory. So you should either set the neighbor style to
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*nsq* or set the skin distance to a larger value.
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See the :doc:`pair_style zero <pair_zero>` for a way to trigger the
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building of a neighbor lists, but compute no pairwise interactions.
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Restrictions
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""""""""""""
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none
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Related commands
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""""""""""""""""
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:doc:`pair_style zero <pair_zero>`
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**Default:** none
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.. _lws: http://lammps.sandia.gov
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.. _ld: Manual.html
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.. _lc: Section_commands.html#comm
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