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Merge pull request #3846 from lammps/triclinic-neighbor-bug

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Fix occasional bug in neighbor list build for triclinic geometries due to round off
This commit is contained in:
Axel Kohlmeyer
2023-10-17 19:36:43 -04:00
committed by GitHub
parent 0fe621886e c051a4cf2d
commit f0801338f3
43 changed files with 1190 additions and 506 deletions
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3
doc/src/Howto_triclinic.rst
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@ -12,7 +12,8 @@ is created, e.g. by the :doc:`create_box <create_box>` or
:doc:`read_data <read_data>` or :doc:`read_restart <read_restart>`
commands. Additionally, LAMMPS defines box size parameters lx,ly,lz
where lx = xhi-xlo, and similarly in the y and z dimensions. The 6
parameters, as well as lx,ly,lz, can be output via the :doc:`thermo_style custom <thermo_style>` command.
parameters, as well as lx,ly,lz, can be output via the
:doc:`thermo_style custom <thermo_style>` command.
LAMMPS also allows simulations to be performed in triclinic
(non-orthogonal) simulation boxes shaped as a parallelepiped with

5
doc/src/atom_modify.rst
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@ -65,6 +65,11 @@ switch. This is described on the :doc:`Build_settings <Build_settings>`
doc page. If atom IDs are not used, they must be specified as 0 for
all atoms, e.g. in a data or restart file.
.. note::
If a :doc:`triclinic simulation box <Howto_triclinic>` is used,
atom IDs are required, due to how neighbor lists are built.
The *map* keyword determines how atoms with specific IDs are found
when required. An example are the bond (angle, etc) methods which
need to find the local index of an atom with a specific global ID